Control system of load-lifting crane (versions)

FIELD: transport.

SUBSTANCE: proposed control system contains the onboard microprocessor control unit with actuators connected thereto, crane operating parameters pickups and controls. The proposed system incorporates means identifying lifted and moved cargo representing a reader of bar codes applied on the cargo, or a radiolabel attached to the cargo, to allow locking the cargo, exceeding the crane lifting capacity, lift and move. The system can contain cargo position pickups to automatically guide the tool to be clamped to the cargo. In compliance with the second version, manual input of the identifier or cargo parameters into this system, and, if required, the coordinates of a final point cargo transfer cargo. Note here that the system incorporates appropriate means preventing the crane overload and optimising cargo transfer trajectories. In compliance with the third version of the control system, the said system can block releasing the cargo from the clamping tool depending on current value of the crane load, speed of move and/or spatial position. In compliance with the fourth version, the control system is equipped with wire or wireless means of transmitting signals from a person, outside the load-lifting crane, to the onboard microprocessor control unit for them to be converted into warning light and/or sound data signals and/or to signals blocking the crane motion.

EFFECT: increase in safety of crane operation, its efficiency and ease of control.

24 cl, 1 dwg

 

The invention relates to mechanical engineering and can be used in control systems, protection and control of cranes.

A device for automatic control of the operations on the movement of cargo in the storage area that contains the on-Board computer that controls engine displacement hauling crane on the appropriate axes depending on the information coming from the sensors location of the cargo. The onboard computer is connected with the control center through a radio channel [1].

A disadvantage of this device is the lack of safe operation of the crane caused by lack of overload protection and collisions with various obstacles when working in cramped conditions.

Also known control system crane, containing on-Board microprocessor control unit and connected to the actuating unit (execution unit) and sensors operating parameters of the crane. The crane in this system is performed by means of manual controls that communicate with the microprocessor control unit and actuators crane [2].

In operation, the crane onboard microprocessor control unit calculates the current values of the load and coordinate spatial position to the s and hauling crane, compares the calculated values of these parameters and their valid values and forms, depending on the results of these comparisons, the control signals actuating device aimed at blocking dangerous movements of the load-lifting crane. Due to this known system is to protect the valve against overloading and collisions with various obstacles (coordinate protection).

However, this control system does not prevent attempts to lift a load that exceeds the maximum capacity of the crane. This, especially taking into account possible failures of the control system (system protection), leads to the insecurity of his work.

In addition, in the known system is not provided the definition and implementation of the safe movement of cargo, blocking unintentional release of the cargo as it moves, and blocking movements of the crane slinger or other person outside of the lifting crane. It also reduces the safety of the crane.

The technical result, which is aimed proposed technical solution in all cases is to increase the safety of the crane. This is achieved through:

to eliminate the possibility of lifting and moving cargo in excess of gruzopodemnostyu;

- possibility of stopping the operation of the crane by slinging, Manager or other person having the ability to remotely control operation of the crane;

- calculation and implementation of safe movement of cargo.

Additional technical results are increased productivity and ease of control valve, reducing swing weight when moving it, as well as providing documentation of the crane and control its operation from a fixed point.

In the control system of the lifting crane, containing on-Board microprocessor control unit and United with him, or included in its composition, at least one execution unit, and controls the crane is made with the possibility of transfer of control actions of the operator in the on-Board microprocessor control unit and/or the Executive device of the crane, this technical result is achieved due to the additional use of means of identification lifted and/or moved and the device wired and/or wireless communication of the tool with the onboard microprocessor control unit, which is configured to signal conditioning block or permit movements of the crane in depending on the signals identify the purpose of the cargo. These signals block or permit movements of the crane are transmitted, at least one execution unit. The system may include sensors operating parameters of the crane is connected to the onboard microprocessor control unit. These include, in particular, the load sensors and/or the spatial position of the boom and/or lifting of the body of the faucet. In this case, the on-Board microprocessor control unit additionally performs a comparison of measured values of the operating parameters of the crane with their maximum permissible values and signal conditioning block dangerous movements of the crane, depending on the results of this comparison.

To achieve the technical result of the identification tool lifted and/or moved may be made in the form of a bar code reader, marked on the goods, or RFID tags attached to the goods or near it. In this case, the on-Board microprocessor control unit is arranged to generate signals allow or block movements of the crane with the possibility of lifting and/or moving cargo with the received identifier of conditions prevent overloading of the crane and/or compliance with the established procedure of loading and unloading, presented in memory is that block in the set of identifiers of goods, permitted to lift and/or move the crane.

The system may further comprise a mobile data carrier, made, in particular, in the form of a Flash card or drive, USB Flash Drive, in which a pre-recorded set of characteristics or identity of the goods is allowed to lift and/or move this faucet. While on-Board microprocessor control unit configured to read the identifier.

The system may include sensors the location of the load attached to the load, or near it, and the reader the location of the load installed on the crane and connected to the onboard microprocessor unit control valve, which is arranged to generate signals to control the actuators of the crane from the ground up to provide automatic approximation hauling crane to load.

In the second variant of the control system of the lifting crane, containing on-Board microprocessor control unit and United with him, or included in its composition, at least one actuator and at least one control valve, is arranged to transfer the control actions of the operator in the on-Board microprocessor control unit and/or at least on the od is on the Executive unit of the crane, this technical result is achieved by the fact that the on-Board microprocessor control unit is configured to input it by the crane operator identifier or at least one characteristic or parameter of the cargo, with the possibility of signal-conditioning block or permit movements of the crane, depending on the value of this identifier, characteristic or parameter of the cargo, and with the possibility of transmission of these signals, at least one execution unit.

To achieve the desired technical effect on-Board microprocessor control unit may be further configured to enter into it coordinate of the end point of movement of the load, determine the values of the load moment of the crane at this point, compare this value with the maximum permissible value of the load moment of the crane and the formation of additional signal block or permit movements of the crane, depending on the results of this comparison. In this case, you can calculate the trajectory of moving cargo from a cargo transfer within a predefined safe zone the permitted provisions hauling crane, and/or the least time to move cargo, and/or minimal swinging of the cargo when it is moved and the valve, with the subsequent formation of control signals actuating devices for implementing the specified path.

In this embodiment, system on-Board microprocessor control unit equipped with additional controls to enter into it by the crane operator identifier, characteristic or parameter of the load and/or coordinate of the end point of the movement of cargo and, if necessary, display, allowing the display on its screen position hauling crane or cargo to be lifting and moving, and/or position of the end point of his move cargo, and/or maps warehousing.

In the third embodiment, the system contains on-Board microprocessor control unit and United with him, or included in its composition, at least one execution unit, a load sensor and/or the spatial position of the boom and/or lifting of the body of the faucet, and at least one control valve, this technical result is achieved in that the actuating device is arranged to control the capture and/or release of cargo lifting body, and the on-Board microprocessor control unit is arranged to generate signals block the release of cargo depending on the current value of the load of the crane, the/or travel speed, and/or the spatial position of the boom and/or lifting of the body of the faucet.

In particular, the on-Board microprocessor control unit is arranged to block the release of the goods in the presence of boom and/or lifting of the body of the faucet, and/or when the value of the crane load exceeding a predetermined value, either blocking the release within a predefined region of the spatial position of the boom and/or lifting of the body of the faucet. The settings of this field can be set by the operator using controls or introduced with mobile media, made, in particular, in the form of a Flash card or USB Flash Drive.

In the fourth embodiment, the control system contains on-Board microprocessor control unit, at least one execution unit, sensors operating parameters of the crane, and at least one control valve, this technical result is achieved by the fact that this system is additionally equipped with information boards, configured to read out the information about the parameters and/or modes of operation of the crane by slinging, or Manager, or other person located outside the load-lifting crane, and/or wired or wireless means of transmitting this information to pers the national computer of the person or computer network.

Information boards made in the form of numeric, graphic or symbolic display on the crane read indicated on it by a person in the work area of the crane. The means of conveying information about the parameters and/or operating modes of the crane, in particular on the load and/or the spatial position of the boom and/or hauling of the crane, to a personal computer or a computer network implemented, in particular in the form of a radio.

To achieve the technical result, the system can additionally be equipped with a wired or wireless means of transmitting signals from a person located outside the load-lifting crane, on-Board microprocessor control unit, is made capable of receiving these signals to convert them to a warning light and/or sound information signals or signals blocking movements of the crane.

On-Board microprocessor control unit in any embodiment, the system may further comprise a block of non-volatile memory for recording of operating parameters of the crane and, if necessary, identifiers, attributes, parameters of the cargo and the coordinate of the end point of movement of the load. This unit is made with the ability to read and recorded in the data is on a stationary computer, if necessary.

The essence of the proposed invention is to provide safety of operation of the valve by preventing the occurrence of dangerous modes of its work, and not blocking the movements of the crane when reaching the maximum permissible values of the parameters of his work.

To do this, the control system of the crane used means of identification lifted and/or moved, either manually enter the system ID or the size of the cargo and, if necessary, coordinate of the end point of movement of the load. This enables you to indicate the possibility of lifting and moving cargo and, accordingly, prevent attempts of lifting and moving cargo, exceeding the carrying capacity of the crane. Blocking the release of cargo lifting body depending on the current value of the crane load, speed and/or the spatial position of the cargo, and also ensures the prevention of emergency situations during operation of the crane. The prevention of dangerous modes of operation of the valve, due to the presence of placards or funds transfer data to a personal computer or computer network, is carried out by formation of a warning signal or signal blocking movements of the crane slinger or the mayor of any other person, outside the crane. Therefore, the distinctive characteristics of the proposed control system of the crane in all variants of its implementation are in direct causal connection with improving the safety of his work.

The use of sensors, location of cargo for automatic focusing on him hauling, implementation of an optimal trajectory of movement of the load, the use of display on the screen the position of the cargo, the end point of its travel and map the storage of goods, as well as the implementation of data transfer from a crane on a personal computer or computer network, results in the achievement of additional technical results - increased productivity, convenience, control valve, reducing the swinging of the cargo as it moves, documenting the crane and control its operation with a stationary post.

On the drawing as an example of one possible functional diagrams of the control system of the lifting crane.

The system contains placed on the crane onboard microprocessor control unit 1 and United with him, or included in its composition, at least one actuator 2 actuator mechanisms of the crane 3.

Crane control (start/stop and speed control movement of the various mechanisms is s crane 3, including managing the capture and release of cargo lifting body) is carried out by means of the bodies (body) of the control valve 4, implemented in the form of electrical devices (controllers), control levers hydraulic crane distributors, etc. Impact the crane control crane transmitted from the management bodies 4 in the form of electrical signals in the on-Board microprocessor control unit 1. These impacts can also be directly transmitted to actuators of the valve 2, for example, control elements (rollers, spools) hydraulic control valves, the drive elements of the friction clutches and the like,

The parameters and modes of the crane are controlled by sensors 5. A specific set of sensors used in the system depends on the implementation of the proposed management system and on the type of crane - bridge or : crane, crane with telescopic or lattice boom crane, hydraulic or cable drive mechanism of lifting, etc. Sensors 5, in General, include the load sensor is a force sensor in the cargo or strelba rope or sensors pressure in the lift cylinder boom, the sensors of the spatial position of the boom and lifting body (cargo) - the sensor elevation (tilt) arrows, Yes the chick the length of the boom, the angle sensor rotary platform crane (sensor azimuth), the limit switch hoist lifting body proximity sensor to the transmission line and the like, as well as the sensors of the provisions of the management bodies of 4 actuators 3, the sensors of the provisions of outriggers, etc.

The sensors 5 can be combined into groups by their location on the crane, for example, on the head Telescopium arrows, at its root partition on non-part crane, etc. In this case, each group of sensors is supplied by the controller implemented on the microcontroller and converts the level, gain, normalization and/or processing output signals of these sensors filtering, temperature compensation, linerization etc.

On-Board microprocessor control unit 1, which may be cited as well as the data processing unit, a display unit, a Central controller, a remote operator crane operator, etc. made mainly on the basis of the microcontroller 6. Its composition may include controls system control and protection of the crane 7, graphical or character display 8 or other display device, non-volatile memory block (register settings) 9, buzzer 10, the device input/output information 11 and, if necessary, other device is VA. These include, in particular, a real time clock connected directly to the microcontroller 6 or to the device input/output information 11. Part of these devices may not be included in the on-Board microprocessor control unit 1 and to connect to the device input/output information 11 as an external device block 1.

The device input/output information 11 provides the coordination of input and output signals of the microcontroller 6 with other functional units of the system and based on the front-end chips. The transmission of signals in the system, depending on the version of the device input/output information 11 and the interface circuits connected devices is performed via the radial circuit using individual wires, on the multiplex channel of communication (CAN, LIN, RS-485 etc) and/or over the air (Wi-Fi, Bluetooth, ZigBee, GSM, CDMA etc). In the latter case, all connected devices, including sensors 5 are transceivers with appropriate antennas.

Controls 7 made in the form of a set of keys/buttons, switches, touch screen display, 8 etc.

Display (display device) 8 can be placed in the on-Board microprocessor control unit 1, and beyond. Used mainly symbolic or graphical recommittal the static display and/or set of led indicators.

The system may further comprise a block of non-volatile memory (register settings) 9 crane, built-in on-Board microprocessor control unit 1 and/or removable (external). It is mainly in the form of a block of non-volatile Flash memory.

Buzzer 10 includes an acoustic transducer with amplifier (if necessary, with the synth sound or speech signals).

Executive device 2, which may be referred to also output devices, separately or combined into a common electrical, electronic, electro-hydraulic, electro-pneumatic or electro-mechanical unit, called the output or power unit, control unit, expansion unit, the output controller and the other Amplifiers in the system - power electromagnetic relay or power electronic switches are electro-hydraulic, electro-mechanical or electro-pneumatic actuator 2 actuator mechanisms of the crane 3, can include in their composition and the structure of the device input/output information 11. If necessary, they may contain a microcontroller and/or any front-end circuit for wired or wireless communication with the control unit 1.

The control system, depending on its COI the log, may contain a means of identification or location 12 lifted and/or moved 13 associated with the onboard microprocessor control unit 1 through the device wired and/or wireless communication 14.

The identification device 12 is in the form of a bar code reader, applied to the load 13, or radio frequency (RFID) tags attached to the goods or near it. In the embodiment, location of the cargo, the device 12 is made in the form attached to the cargo or near this load receiver of signals from satellites of the global positioning such as GPS (Global Position System) system Navstar or Russian GLONASS (global navigation system), or any other device, such as a transceiver device with a hardware engine that is capable of determining the location of that device (transceiver SS company Chipcon AS, and so on). In this case, the crane (lifting the body on a movable holder cargo polyspast etc) is installed reader package location United with the onboard microprocessor unit control valve 1. This device is part of the sensors 5 and the drawing is not shown separately.

On-Board microprocessor control unit 1 in General SL is tea made with the ability to manually enter it, using the controls 7, identifiers or characteristics of the goods, cargo, coordinates of the end points of movement of the load, the parameters of the permitted working area of the crane and settings valid zone release cargo lifting body. Enter these settings are also possible with an external communication device 14 or mobile media, such as Flash card or drive, USB Flash Drive, which connects to the device input/output information 11 or directly to the microcontroller 6, if the microcontroller has a built-in interface mobile media.

The system may include an information Board 15 is placed on the valve or on any other object and is arranged to read out the information about the parameters and/or modes of operation of the crane by slinging, or Manager, or other person located outside the load-lifting crane, mainly in its working area. Accordingly, it is an information Board 15 is connected to the device input/output information 11 or connected with the onboard microprocessor control unit 1 through a wired or wireless communication device 14 or other interface device. Information about the parameters and modes of operation of the crane via a wired or wireless communication device 14 may also peregovits is on a personal computer or a computer network.

At the disposal of the slinger, Manager, or other person working outside of the crane and having the opportunity to observe placards or to read information about the operation of the crane with a computer monitor that may be transmitted by wired or wireless means of transmitting signals from a remote control, keyboard, etc. (conventionally in the drawing not shown). These signals are sent to the on-Board microprocessor control unit 1 via the communication device 14 and is used to generate a warning light and/or sound information signals or signal blocking movements of the crane.

System control valve operates as follows.

Before you begin lifting crane in memory of the microcontroller 6 on-Board microprocessor control unit 1 or in the memory unit 9 pre-recorded magnitude of loads that are valid for different positions of its arrows or hauling. These values will be determined during design of the valve or its control system and presents, for example, in the form of cargo characteristics of the machine.

With the help of authorities 7 the operator makes an input in the memory of the microprocessor unit 1 parameters determining the operation modes of the load - lifting crane position of sliding bearings, pistons Spasovka g is osobogo of the polyspast, the presence, length, and angle of inclination of the jib, etc. if these input parameters required for the particular type and model of crane. Similarly, the operator, if necessary, sets the parameters of the coordinate protection, define the valid area of the lifting provisions (boom) equipment. The entered parameters are also stored in the memory unit 9 or in the memory of the microcontroller 6.

During operation of the crane the crane operator affects the organs of the control valve 4, providing start/stop and speed control of the movements of individual mechanisms of the crane 3 - lifting and lowering the boom, raising and lowering the cargo winch, swing crane, etc.

Before lifting the control system detects the possibility of this rise and subsequent movement of cargo. For this purpose at the disposal of the slinger is transmitted to the reader ID of lifted cargo 12, for example, a barcode scanner, applied to the load, or the RFID reader. Read slinger ID of the cargo using the communication device 14 is transmitted to the onboard microprocessor control unit 1. It is also possible to automatically read ID of cargo using a reader or scanner, located on the crane.

Using the obtained identifier of microcontro the Lehr 6 microprocessor-based control unit 1 determines a lifting and/or moving of cargo. Criteria of the possibility of such lifting/moving can be different.

In particular, the identifier may contain information regarding the weight of lifted load. In this case, the microcontroller 6 compares this information with the value of the maximum permissible mass of lifted cargo at this point cargo characteristics of the crane and then carries out the blocking lifting cargo, if the cargo weight exceeds the capacity of the crane. This limit ensures attempt to rise unacceptably large cargo, allowing safe operation of the crane.

The identifier may also contain an indication of the type or size of cargo. In this case, the microcontroller 6 analyzes the possibility of lifting and moving cargo using other criteria - in accordance with the production job or established procedures to perform the loading and unloading operations on the basis of parameters (dimensions) of the loaded vehicle or storage sites, etc.

The set of identifiers or characteristics of goods permitted for lifting and/or moving the crane, can be entered by the operator using controls 7. The crane operator can enter, for example, the type, brand or size of lifted cargo container, reinforced concrete slabs, Packed metal etc. This set of identifiers can the t to be read with mobile media, for example, Flash card or drive, USB Flash Drive, in which these identifiers are pre-recorded. You can also send these identifiers or characteristics in the control unit 1 of the computer network through the communication device 14.

Next, the microcontroller 6 similarly, by comparing the received identifier of the cargo with the pre-recorded in the memory of the control unit 1 set of identifiers of goods permitted for lifting and/or moving this valve, generates signals allow or prevent lifting of the cargo. However, if necessary, the microcontroller performs the calculations of the parameters of the load. For example, based on the values of input parameters or dimensions of the cargo calculates its weight to further compare the weight with a maximum lifting capacity of the crane.

If the system further comprises sensors operating parameters of the valve 5, in the process of lifting and moving cargo microcontroller 6 of the control unit 1, working on the program stored in its built-in program memory or in the memory unit 9, communicates with the sensors 5 in total multiplex communication line or on separate wires. After receiving information from the sensors 5, the microcontroller 6 determines the actual values of the operating parameters of the load-lifting crane, on the tea current load and the actual position of the lifting equipment. Next, the microcontroller 6 compares the current position of the lifting equipment (boom or lifting of the body) with the threshold levels specified by the crane operator with the introduction of the parameters of the coordinate protection, as well as comparing the current load with the stored allowable load for the current spatial position of the boom or lifting body. Depending on the results of this comparison, i.e. when approaching the arrows to the boundaries of the permitted area of operation on the coordinate protection or in case of exceeding the maximum permissible load, the control unit 1 generates warning signals on the display 8 and the buzzer 10, and the switch-off signal currently running mechanism 3, which through the actuator 2 blocks the movement of the lifting crane. Thanks this is the coordinate protection and protection of crane overload.

The control mechanisms of the crane can be carried out not only by means controls the valve 4, but automatically. In particular, in the automatic focusing hauling crane for cargo. In this case, the system further comprises a sensor package location attached to the cargo or placed near it. Reader package location installation is by the crane, transmits data about the location of the cargo to the microcontroller 6. Next, the microcontroller 6, by comparing the coordinates of the current spatial position of the lifting body of the crane is controlled by means of sensors 5, with coordinates of cargo, generates control signals for the actuators of the valve 2 from the condition of providing an automatic approximation hauling crane to the load. In this case, the operator at the controls of the crane 4 provides only a start and a stop in emergency situations.

With the use of controls 7 the operator can enter in the on-Board control unit 1 coordinates of the end point of the movement of cargo. For convenience of the operator in this mode, the entered coordinates, the working area of the crane and, if necessary, schematic representation of the mechanisms of the crane, can be displayed on the graphic display 8. Convenient for the operator variant implementations of this display is the formation on the display screen 8 card warehousing of cargo simultaneously with the position of the working body of the crane (movable goods).

The microcontroller 6, after obtaining the values of these coordinates, using a mathematical model of the crane carries out the calculation of the predicted values of the load moment of the crane with the load in the beam move it to the specified endpoint. If this value exceeds the maximum allowable load moment of the crane at this point, the microcontroller 6 performs blocking movements of the crane. Because this is done automatically preventing attempts to move the load in the zone in which the cargo could not be moved because overload of the crane truck moment.

The movement of goods to a specified destination point of the move can be performed automatically. In this case, after starting the crane operation at the controls of the crane 4, the on-Board microprocessor control unit 1 with the use of a mathematical model of the crane calculates the trajectory of the movement of cargo from the movement of cargo within a predefined zone the permitted provisions hauling crane (using previously entered parameters coordinate protection), from the condition of least time move cargo, or minimal rocking cargo moving, or any other criterion of optimality of this trajectory, composed as a combination of these criteria. The pathway, in General, includes both spatial movements and curves of acceleration and deceleration hauling crane with the load.

After calculating the trajectory of the microcontroller 6 to define who has the direction and speed of movement of the crane and its lifting body and issues through the device input/output information 11 corresponding commands to actuators of the crane 2. Further, in the process of moving the valve control unit 1 periodically compares the current location of the faucet, determined by the sensors 5, with coordinates calculated trajectory of its movement and adjusts the control signals for the actuators 2, realizing that path.

The optimal trajectory of movement of cargo, including acceleration and braking depends on the weight of the load on the lifting body. As the control system is equipped with a load cell crane 5, the microprocessor unit 1 has the ability to calculate and implement the trajectory of the conditions for ensuring safe operation of the crane, but the minimum time of movement of the load (the maximum capacity of the crane), and minimum swinging of the cargo when it is moved.

During the movement of cargo along the optimal trajectory, the operator, having priority in the management of the crane, by means of the display 8 controls this process and, if necessary, corrects it using the controls of the crane 4.

To further improve the safety of crane equipped with a control device, capture and release of cargo lifting body, the onboard microprocessor control unit 1 additionally generates signals block the release of cargo depending on naked is narrow crane, the speed of movement of the load or its spatial position.

The logic of the system operation in this mode is determined when designing the crane management system with regard to production technology of lifting operations, design features of the crane and is based, in particular, on the inadmissibility of the release of the cargo during its movement, the inadmissibility of the release of suspended cargo ropes of the goods be laying etc. This logic is reflected in the work program of the microcontroller 6 and implemented in this microcontroller using the output signals of the sensors 5, a mathematical model of the crane and put the zone settings of the release of the cargo (loading/unloading areas).

In this region the spatial position of the cargo (the arrows and/or hauling crane), which prohibits its release, as well as the speed of movement of the load and the loads on the crane, which prohibited the release of cargo, can be set by the operator, introduced with mobile media (Flash card or USB Flash Drive) or received from the computer network through the communication device 14.

Another version of the technical implementation of the system control valve for increased safety of its operation, is based on the prevention of dangerous modes of operation of the crane is not only cu is Navicom and automated control system of the crane, but the slinger, Manager or other person located outside the load-lifting crane. To make this possible, the system is additionally equipped with a digital, symbolic, or graphical display placards 15, from which this person reads the information about the parameters and/or operating modes of the crane, in particular, on the load and/or the spatial position of the boom and/or lifting of the body of the faucet. This feature can also be implemented through provision of wired or wireless means of transmitting this information 14 on a personal computer or computer network to the control center, control center, etc).

In this case, slinger, Manager or other person in the zone of operation of the crane and the reader with information displays information about the operation of the crane, or the person overseeing the operation of the crane on the computer monitor, in case of a dangerous evolution of a crane or the occurrence of dangerous modes of its operation, transmits a signal to the crane operator about the need for stopping the operation of the crane or block it using the optional remote control crane, in his possession.

The first option is to implement in case of finding that person in the work area of the crane and, accordingly, if there is the possibility of direct transmission of signals to the crane operator (when there is visual contact with him).

In the second embodiment, the system control valve shall be additionally included means for the transmission of additional signals blocking movements of the crane. These signals, after the transfer to the microcontroller 6 through the communication device 14, is converted to a warning light and sound information signals and/or signals blocking movements of the crane.

Simultaneously with the implementation of security features and crane control microcontroller 6 microprocessor-based control unit 1 performs the primary processing and the converting received from the sensors 5 information to prepare the necessary operational data about the operation of the hoisting crane for recording in the memory unit 9 (in memory of the Registrar). These include, in particular, information about the load on the lifting body, the coordinates of the goods concerning, about managing impacts crane, health units and mechanisms of the crane, about the response of restrictions (blocking) single movement of the lifting crane and other parameters.

Simultaneously with the recording of the data in the memory block (in Registrar settings) 9 microcontroller 6 also provides an entry in this block identifiers, characteristics or parameters of the cargo, the coordinates of the trajectories of movement of goods, including the end points of these trajectories, the total mass of the moved goods the other

If necessary, read the recorded data to the device input/output information 11 connects the portable reader (in the drawing conventionally not shown). The microcontroller 6, in accordance with the program of his work, reveals the fact of the connection of the portable reader and automatically performs overwriting or copying data from a memory block 9 in the non-volatile memory device (Flash memory) reader. Next, a portable reading device is disconnected from the control unit 1 and is connected to the computer, which similarly identifies a connection to the reader and transports (overwrite) data from non-volatile Flash memory in this computer for subsequent (secondary) processing.

If necessary, the data logger parameters can be transferred to a stationary personal computer or a computer network using a wired or wireless communication devices 14.

In this specification, schematically shown only private options for implementation of the proposed control system of the lifting crane. The invention encompasses other possible variations of its performance and cash equivalents without departure from the invention set forth in the formula.

Sources of information

1. FR 2540087 A1, B66C 13/46, 13/48, 13/18, 03.08.1984.

2. EN 228257 C2, B66C 23/88, 15/00, 27.08.2006.

1. The control system of the lifting crane, containing on-Board microprocessor control unit and United with him, or included in its composition, at least one actuator and at least one control valve, is arranged to transfer the control actions of the operator in the on-Board microprocessor control unit and/or at least one actuator of the valve, characterized in that it further comprises means for identifying lifted and/or moved, the device wired and/or wireless communication of the tool with the onboard microprocessor control unit, which is made with transmission of these signals to block or permit movements of the crane, at least one execution unit, and a signal-conditioning block or permit such movements of the crane, depending on the signal identification of the goods of conditions prevent overloading of the crane when lifting and/or moving cargo with the received identifier, and/or from the condition of observance of the established order of loading-unloading works, presented in memory of the onboard microprocessor control unit in the form of a set of identifiers of goods, represen the x to lift and/or move this crane.

2. The system according to claim 1, characterized in that it further comprises at least one sensor operating parameters of the crane is connected to the onboard microprocessor control unit.

3. The system according to claim 2, characterized in that the sensor operating parameters of the crane is made with the possibility of measuring its load, and/or the spatial position of the boom, and/or hauling, and on-Board microprocessor control unit configured to compare the current values with the limit values and signal-conditioning block movements of the crane, depending on the results of this comparison.

4. The system according to claim 1, characterized in that the means of identification lifted and/or moved in the form of a bar code reader, marked on the goods, or radio frequency tags attached to the goods or placed near it.

5. The system according to claim 1, characterized in that it further comprises a mobile data carrier, in which a pre-recorded set of identifiers of goods permitted for lifting and/or moving this valve, and the on-Board microprocessor control unit configured to read the identifier.

6. The system according to claim 5, characterized in that the mobile data carrier is made in the form of a Flash card or USB Flash Drive.

7. With the system according to claim 1, characterized in that it further comprises a sensor package location attached to the cargo or placed near him, and the reader the location of the load installed on the crane and connected to the onboard microprocessor unit control valve, which is arranged to generate signals to control the actuators of the crane from the ground up to provide automatic approximation hauling crane to load.

8. System according to one of claims 1 to 7, characterized in that the on-Board microprocessor control unit further comprises a block of non-volatile memory and configured to write to this block of parameters of the crane with the ability to read and transfer data recorded on the stationary computer, if necessary.

9. The control system of the lifting crane, containing on-Board microprocessor control unit and United with him, or included in its composition, at least one actuator and at least one control valve, is arranged to transfer the control actions of the operator in the on-Board microprocessor control unit and/or at least one execution unit of a crane, wherein the on-Board microprocessor control unit is made with the possibility of entering into it by the crane operator ID, or, at least one characteristic or parameter of the cargo, with the possibility of signal-conditioning block or permit movements of the crane, depending on the value of this identifier, or a characteristic or parameter of the cargo.

10. The system according to claim 9, characterized in that the on-Board microprocessor control unit is additionally configured to input it coordinate of the end point of movement of the load, determine the values of the load moment of the crane at this point, compare this value with the maximum value of the load moment of the crane and the formation of additional signal block or permit movements of the crane, depending on the results of this comparison.

11. The system according to claim 9 or 10, characterized in that the on-Board microprocessor control unit is additionally configured to calculate the trajectories of moving cargo from a cargo transfer within a predefined zone the permitted provisions hauling crane, and/or the least time to move cargo, and/or minimal rocking cargo moving, and with the possibility of generating signals to control the actuators corresponding to said path.

12. The system according to claim 9 or 10, characterized in that boron is new microprocessor control unit equipped with additional controls, provide input to this unit by the operator identifier, or characteristic, or parameter, cargo, and/or coordinate of the end point of movement of the load.

13. The system according to claim 9 or 10, characterized in that the on-Board microprocessor control unit equipped with a display and configured to display on the display position of the goods be lifting and moving, and/or position of the endpoint of the movement of cargo, and/or maps warehousing, and/or position of the lifting body of the faucet.

14. The system according to claim 9 or 10, characterized in that the on-Board microprocessor control unit further comprises a block of non-volatile memory and configured to write to this block identifiers, and/or characteristics and/or parameters of the cargo, and/or coordinate of the end point of movement of the load, with the ability to read and transfer data recorded on the stationary computer, if necessary.

15. The control system of the lifting crane, containing on-Board microprocessor control unit and United with him, or included in its composition, at least one execution unit, a load sensor, and/or the spatial position of the boom, and/or lifting of the body of the faucet, and at least one control valve, configured to transfer and control actions of the operator in the on-Board microprocessor control unit and/or, at least one execution unit of a crane, wherein the execution unit is configured to control the capture and/or release of cargo lifting body, and the on-Board microprocessor control unit is arranged to generate signals block the release of cargo depending on the current value of the crane load and/or speed and/or the spatial position of the boom, and/or lifting of the body of the faucet.

16. The system of clause 15, wherein the on-Board microprocessor control unit is arranged to block the release of goods when there is a boom, and/or lifting of the body of the faucet, and/or when the value of the crane load exceeding a predetermined value.

17. The system of clause 15, wherein the on-Board microprocessor control unit is arranged to block the release of goods within a predefined region of the spatial position of the boom and/or lifting of the body of the faucet.

18. The system of clause 15 or 17, characterized in that the on-Board microprocessor control unit is configured to specify the operator settings area of the spatial position of the boom and/or hauling crane prohibited the release of cargo, Il is with the possibility of entering these parameters with mobile media.

19. System p, characterized in that the mobile data carrier is made in the form of a Flash card or USB Flash Drive.

20. System according to one of p-17 or 19, characterized in that the on-Board microprocessor control unit further comprises a block of non-volatile memory and configured to write to this block load parameters, and/or the spatial position of the boom, and/or lifting of the body of the faucet, with the ability to read and transfer data recorded on the stationary computer, if necessary.

21. The control system of the lifting crane, containing on-Board microprocessor control unit and United with him, or included in its composition, at least one execution unit, sensors operating parameters of the crane is connected to the onboard microprocessor control unit, and at least one control valve, is arranged to transfer the control actions of the operator in the on-Board microprocessor control unit and/or at least one actuator of the valve, characterized in that it is additionally equipped with wired or wireless means of transmitting signals from a person located outside the load-lifting crane, in on-Board microprocessor control unit, which is configured to receive floor the x signals and convert them to a warning light, and/or audio information signals and/or signals blocking movements of the crane.

22. The system according to item 21, characterized in that it is additionally equipped with information boards, configured to read out the information about the parameters and/or modes of operation of the crane by slinging, or Manager, or other person located outside the load-lifting crane, and/or additionally equipped with wired or wireless means of transmitting this information to a personal computer or a computer network.

23. The system according to item 22, wherein the information display is made in the form of digital and/or character and/or graphic display located on the crane read indicated on it by slinger or other person located in the operating area of the crane.

24. The system according to item 22, wherein the means for transferring information from the onboard microprocessor control unit is executed as a unit.



 

Same patents:

FIELD: transport.

SUBSTANCE: method envisages preliminary determining or setting of admissible values of parameters characterising loading and/or attitude position of outrigger or crane cargo-handling device, memorising this data, measuring of these parameters during crane operation, comparing of measured values with admissible values, and further forming of control signals or blocking of control by execution units in order to prevent exceeding of admissible values. Prior to commencement of crane work or in process of lifting and movement of cargoes crane-operator additionally performs preliminary visual control of crane operation condition or presence of people along way of crane or cargo movement or automatic control of correctness of slinging (securing) of cargo, or automatic check of correctness of crane installation on outriggers or optical measurement of crane performance parameters or automatic change of coordinate parity parameters using GPS receivers, radio-frequency or inertial determination of position devices located on obstacles, clothing or equipment of people. Results of this check or control ensue implementation of additional control or information signals.

EFFECT: enhancement of safety of crane operation and of crane efficiency.

24 cl, 1 dwg

FIELD: transport.

SUBSTANCE: system contains hydraulic, electrohydraulic and/or electric drives of crane mechanisms, control device for these drives, and fuel supply control device connected to it. In process of crane operation automatic fuel supply change is performed depending on load position and/or speed of cargo relocation. In second version of system fuel supply change is automatically related to approach or touch of crane operator's hand to drive control handle. Drive control is made as control unit containing control handle, handle position sensor, and controller with outputs connected immediately, or via additional output device, to control drives' inputs and to device controlling fuel supply. Level of fuel supply in general case is different for different drives and directions of crane movement. After handles of crane drive control are returned to neutral position or after hands are removed from handles, value of motor angular velocity is preserved within preset interval after which minimum preset velocity of motor blank cycle is automatically established.

EFFECT: decrease of specific fuel consumption, efficiency increase, enhancement of usability of crane control and of safety of its operation.

17 cl, 2 dwg

FIELD: transport.

SUBSTANCE: system contains electronic module made on basis of microcontroller with attached device for information input-output, display device, protection system controls located outside electronic module, and execution unit, and cargo-hoisting machine performance sensors connected with device for information input-output. Protection system controls and electronic module perform changing type of display of machine performance indicators and changes in both parameters and performance mode of work of machine protection system - scheduling sequence of telescopic boom sections extension, permitting/forbidding lifting operations mix, release of blocking of movement of cargo-hoisting machine in respect of overload and , blocking of cushioning of machine carrier, cargo-hoisting mechanism mode of braking, or boom extension change, position of bracing jack, etc. Display device may be located outside electronic module and it is made as graphic display.

EFFECT: safety enhancement.

13 cl, 1 dwg

FIELD: physics; transportation.

SUBSTANCE: proposed device comprises an information processing and signal generating device, which is connected to a capacitive, inductive or ultrasonic primary detector, put onto a holder and linked to runners. The detector comprises transmitting and receiving elements, connected to a generator and to an amplifying converter device, comprising an analogue-to-digital converter, microcontroller and a wired or wireless interface device, and is part of the information processing and signal generating device. The device can also have a detector for the inclination angle of the rope.

EFFECT: wider range of external conditions for operation of the device, tolerance to vibration action, simple servicing, increased efficiency, and wider functional capabilities of the device.

7 cl, 3 dwg

FIELD: transportation.

SUBSTANCE: crane protection system contains working conditions transmitters, actuator and data-control unit made on the base of microcontroller with possibility of wire or wireless connecting to it above mentioned transmitters and actuator and with possibility for actuator to generate control signals aimed to prevent working conditions to exceed their permitted values. In the system parameter is revealed for which permitted value exceeding is the most probable at current time, whereupon priority limiting of this parameter value. To do so, the main load carrying member of crane is determined or inhibition of it's stability under working conditions margin is revealed. In the second version of protection system, warning, detection and/or correction of operator wrong actions during setting parameters for jib equipment and/or support contour is performed. In the third system version, changing of permitted values for crane operation parameters is provisioned depending on error of used transmitters.

EFFECT: improvement of operation safety for lifting crane; reducing the value of its travels after achieving the rating value for any parameter and blocking the crane movements by protection system; increase of this system reliability and reduction of requirement to transmitters accuracy.

25 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to handling machinery and can be used in the systems of control and protection of climbing cranes. The safety system incorporates digital computing unit (1) with its data inputs receiving, via a data exchange multiplexer channel, the outputs of the crane parameter recording peripherals (71...7m) comprising, at least, one crane equipment travel pickup, and with outputs wired to crane parameter recorder (3) with real-time counter, display unit (4), preventive signaling unit (5), actuator (6) and external memory (2) communicating, via a two-way data exchange channel, with the digital computing unit. The system comprises, at least, one indicator (8) of the crane equipment crossing of, at least, one check point within the crane operating range, the said indicator being connected to the digital computing unit additional data input adapted to correct the crane equipment travel pickup readings in compliance with the signals generated by the aforesaid indicator.

EFFECT: higher reliability of the crane coordinate protection system operation.

1 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building and can be used in control protection systems of electrically-driven load lifting machinery. The system incorporates a digital computing unit (1) with its data inputs connected, a multiplexer data exchange channel, with the crane parameter recording peripherals, while its outputs are connected with crane parameter recorder (3) with a real-time counter, display unit (4), nonurgent alarm unit (5), actuator unit (6) and external memory unit (2) connected to the digital computing unit by a duplex data exchange channel. The system comprises the crane supply voltage parameter meters (81...8n) with their outputs connected, via the multiplex data exchange channel, to additional crane parameter recorder data inputs, those of the computing unit and the display. The digital computing unit is designed to compare the measured voltage with tolerable supply voltage parameters, to generate crane motions inhibiting signals in the case of the supply voltage parameters falling beyond tolerances for crane control system, to generate signals inhibiting certain types of the cranes motions in the case of the crane drives supply voltage falling beyond tolerances and to generate sound and light nonurgent alarm signals under the aforesaid conditions.

EFFECT: higher reliability of the crane operation.

2 cl, 1 dwg

FIELD: transportation.

SUBSTANCE: in compliance with the proposed method, with electric key set up, loads are uplifted in turn, their weights making m0, ..., mi-1, mi where i=2, 3, ..., and the motor shaft respective rpm making n0, ..., ni-1, ni being recorded by means of the accelerometer arranged on the base plate or the crane motor bed are memorised. The accelerometer output signal is subjected to spectral analysis with the frequency whereat the motor bed vibration fundamental amplitude is determined corresponding to the motor shaft rpm. Now, proceeding from the data obtained, the dependence of the motor rpm upon the uplifted load n=f(m) is derived to be memorised along with the known tolerable uplifted load weight value. Now, uplifted the load, the motor shaft rpm value is continuously measured by accelerometer to define, proceeding from n=f(m), the load weight. If this weight exceeds the tolerable value, audio and visual warning signals are output and the crane if cut off.

EFFECT: higher reliability of the crane capacity limiter.

6 dwg

FIELD: hoisting-and-transporting mechanical engineering.

SUBSTANCE: invention can used in the crane control and safety systems. Method consists in transfer of control signals from remote control board (RCB) located outside the crane using a two-way line of wireless communication, measuring the working parameters, converting measured sizes into digital signals, defining safe loads and limiting positions of the crane structural components and switching off its mechanisms on reaching limiting values, recording the crane operating and data signals and time of their arrival into long-term nonvolatile memory to be read out in case of need, and also their remote transfer to the dispatcher control located outside the crane. In addition, RCB outputs the instructions to transfer the crane data and control signals to be written down into RCB nonvolatile memory to be read out in case of need by transmitting the signals to the dispatcher control station, registration and storage of data on the crane operation. Here, note that two-way wireless communication lines are used to this end.

EFFECT: higher reliability of control and registration of crane working parameters.

1 dwg

FIELD: transportation.

SUBSTANCE: adjustment consists in regulation of signals in channels of measurement of boom load, overhang or inclination angles by adding and/or multiplying these signals with the signals corresponding to the adjusting parameters the values of which are preliminary defined and stored in power-independent memory of the safety device. Regulation is made without of reference cargoes proceeding from the conditions of independence of the results of measurement of the lifted and moved cargoes upon the boom length and inclination angle. Values of adjusting parameters are defined, allowing for the boom deflection, as the constants or functions of the boom overhand, length and inclination angle by commands of the operator/crane operator or automatically. The principle of definition of adjusting parameters is based, in particular, on their calculation as unknown factors in a set of the equations derived using the crane mathematical model. The said device contains transducers of the load-lifting crane operating parameters with digital or analog outputs and the digital computing device with power-independent memory.

EFFECT: opportunity of checking the accuracy of the safety device operation without check cargoes is ensured and efficiency of protection of the load-lifting crane is increased.

16 cl, 1 dwg

FIELD: transport.

SUBSTANCE: method envisages preliminary determining or setting of admissible values of parameters characterising loading and/or attitude position of outrigger or crane cargo-handling device, memorising this data, measuring of these parameters during crane operation, comparing of measured values with admissible values, and further forming of control signals or blocking of control by execution units in order to prevent exceeding of admissible values. Prior to commencement of crane work or in process of lifting and movement of cargoes crane-operator additionally performs preliminary visual control of crane operation condition or presence of people along way of crane or cargo movement or automatic control of correctness of slinging (securing) of cargo, or automatic check of correctness of crane installation on outriggers or optical measurement of crane performance parameters or automatic change of coordinate parity parameters using GPS receivers, radio-frequency or inertial determination of position devices located on obstacles, clothing or equipment of people. Results of this check or control ensue implementation of additional control or information signals.

EFFECT: enhancement of safety of crane operation and of crane efficiency.

24 cl, 1 dwg

FIELD: transport.

SUBSTANCE: system contains hydraulic, electrohydraulic and/or electric drives of crane mechanisms, control device for these drives, and fuel supply control device connected to it. In process of crane operation automatic fuel supply change is performed depending on load position and/or speed of cargo relocation. In second version of system fuel supply change is automatically related to approach or touch of crane operator's hand to drive control handle. Drive control is made as control unit containing control handle, handle position sensor, and controller with outputs connected immediately, or via additional output device, to control drives' inputs and to device controlling fuel supply. Level of fuel supply in general case is different for different drives and directions of crane movement. After handles of crane drive control are returned to neutral position or after hands are removed from handles, value of motor angular velocity is preserved within preset interval after which minimum preset velocity of motor blank cycle is automatically established.

EFFECT: decrease of specific fuel consumption, efficiency increase, enhancement of usability of crane control and of safety of its operation.

17 cl, 2 dwg

FIELD: transport.

SUBSTANCE: system contains electronic module made on basis of microcontroller with attached device for information input-output, display device, protection system controls located outside electronic module, and execution unit, and cargo-hoisting machine performance sensors connected with device for information input-output. Protection system controls and electronic module perform changing type of display of machine performance indicators and changes in both parameters and performance mode of work of machine protection system - scheduling sequence of telescopic boom sections extension, permitting/forbidding lifting operations mix, release of blocking of movement of cargo-hoisting machine in respect of overload and , blocking of cushioning of machine carrier, cargo-hoisting mechanism mode of braking, or boom extension change, position of bracing jack, etc. Display device may be located outside electronic module and it is made as graphic display.

EFFECT: safety enhancement.

13 cl, 1 dwg

FIELD: transportation.

SUBSTANCE: crane protection system contains working conditions transmitters, actuator and data-control unit made on the base of microcontroller with possibility of wire or wireless connecting to it above mentioned transmitters and actuator and with possibility for actuator to generate control signals aimed to prevent working conditions to exceed their permitted values. In the system parameter is revealed for which permitted value exceeding is the most probable at current time, whereupon priority limiting of this parameter value. To do so, the main load carrying member of crane is determined or inhibition of it's stability under working conditions margin is revealed. In the second version of protection system, warning, detection and/or correction of operator wrong actions during setting parameters for jib equipment and/or support contour is performed. In the third system version, changing of permitted values for crane operation parameters is provisioned depending on error of used transmitters.

EFFECT: improvement of operation safety for lifting crane; reducing the value of its travels after achieving the rating value for any parameter and blocking the crane movements by protection system; increase of this system reliability and reduction of requirement to transmitters accuracy.

25 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to handling machinery and can be used in the systems of control and protection of climbing cranes. The safety system incorporates digital computing unit (1) with its data inputs receiving, via a data exchange multiplexer channel, the outputs of the crane parameter recording peripherals (71...7m) comprising, at least, one crane equipment travel pickup, and with outputs wired to crane parameter recorder (3) with real-time counter, display unit (4), preventive signaling unit (5), actuator (6) and external memory (2) communicating, via a two-way data exchange channel, with the digital computing unit. The system comprises, at least, one indicator (8) of the crane equipment crossing of, at least, one check point within the crane operating range, the said indicator being connected to the digital computing unit additional data input adapted to correct the crane equipment travel pickup readings in compliance with the signals generated by the aforesaid indicator.

EFFECT: higher reliability of the crane coordinate protection system operation.

1 dwg

FIELD: transportation.

SUBSTANCE: adjustment consists in regulation of signals in channels of measurement of boom load, overhang or inclination angles by adding and/or multiplying these signals with the signals corresponding to the adjusting parameters the values of which are preliminary defined and stored in power-independent memory of the safety device. Regulation is made without of reference cargoes proceeding from the conditions of independence of the results of measurement of the lifted and moved cargoes upon the boom length and inclination angle. Values of adjusting parameters are defined, allowing for the boom deflection, as the constants or functions of the boom overhand, length and inclination angle by commands of the operator/crane operator or automatically. The principle of definition of adjusting parameters is based, in particular, on their calculation as unknown factors in a set of the equations derived using the crane mathematical model. The said device contains transducers of the load-lifting crane operating parameters with digital or analog outputs and the digital computing device with power-independent memory.

EFFECT: opportunity of checking the accuracy of the safety device operation without check cargoes is ensured and efficiency of protection of the load-lifting crane is increased.

16 cl, 1 dwg

FIELD: transportation.

SUBSTANCE: device contains the base and the force pickup attached thereto, two support elements and the deformable element connecting free ends of the support elements and attached, by its central part, to force pickup. The device additionally contains the electronic device made to compare the force pickup output signal with that corresponding to the maximal lifting capacity of the mechanism, and to generate the signal to lock its operation, and/or a warning light and/or sound signal depending on results of this comparison. The device, a second version, contains the force pickup, two support elements and two deformable elements jointing the support elements. The force pickup is attached to the central parts of deformable elements. One deformable element is made either elastic or in the form of rigid parts with elastic hinges.

EFFECT: higher safety in operation of the load-lifting mechanism and accuracy of measurement of the cable tension.

12 cl, 3 dwg

FIELD: construction.

SUBSTANCE: series of inventions refers to the sphere of tower crane operation security engineering. The method in question presupposes exchange of information on the cranes locations, movements and equipment loads between the control and protection devices of all the "n" jointly operating tower cranes. Additional features: identification of the position of each crane and/or its equipment against the construction site plan, conventional graphical visualisation of the position within the construction site territory of a specified crane and/or its equipment (as well as that of the "neighbouring" cranes and equipment related to them) on the crane display. When the crane operator initiates relocation of equipment related to crane Ki the following is carried out: the intended equipment motion path tracing, display graphical visualisation of the intended motion path(s) of the equipment related both to crane Ki and the "neighbouring" crane(s) whose equipment is currently in motion (by means of exchange of information between the control and protection devices), estimation of the minimum distance between the above paths, graphical visualisation of the point of intersection on the crane Ki display and generation of a signal disabling operation of this crane equipment and light and sound alarm signals in case the paths as having been traced happen to intersect. In order to enable further motion of the crane Ki equipment there is an additional line to be plotted by the crane operator which is intended to restrict motion of the crane equipment (the line becomes graphically visualised on the crane Ki, screen); in case the limiting line has been plotted erroneously operation of the crane Ki equipment and mechanisms is automatically disabled when at the paths intersection point.

EFFECT: improving the hoisting cranes operation standard of safety.

4 cl, 3 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to load-lifting and transportation equipment and it can be used in protection systems of load-lifting cranes. According to proposed method, tolerable loads are determined and memorized in form of function of spatial position of boom, measuring current value of load in process of operation of crane, comparing it with tolerable load and generating warning signal or signal to crane mechanisms aimed at limiting or preventing overload. In process of lifting and/or shifting of load, change of linear or angular position of crane part is revealed additionally whose change is not allowed in current stage of load lifting and/or shifting process. Depending on value of said change of position, additionally warning information signals or crane mechanism control signals are formed aimed either to prevent further increase in said change or to return said part of crane, for instance, boom, into initial position. Protection of crane from overload is implemented with due account both of absolute value and change of value of angle of tilting of crane component part from horizontal or vertical position in process of lifting and/or shifting of load.

EFFECT: improved safety of crane in operation.

21 cl, 1 dwg

FIELD: mechanical engineering; lifting and transportation machine building.

SUBSTANCE: invention can be used in control and protection system of load-lifting cranes. Proposed system contains load pickups 1, boom tilting angle pickups 5, parameters indicator 6 and series-connected tolerable load setting unit 8, comparator 9 and actuating unit 10 whose output is connected to first input of parameters recorder 11, unit to record designed values of parameters 12, correction unit 3, load weight check unit 2, scaling unit 4, variable coefficients unit 14, change-over switch 15, boom deflection recording unit 13 and boom reach calculating unit 7.

EFFECT: improved safety of crane owing to increased accuracy of control of its parameters.

2 cl, 2 dwg

FIELD: transport.

SUBSTANCE: method envisages preliminary determining or setting of admissible values of parameters characterising loading and/or attitude position of outrigger or crane cargo-handling device, memorising this data, measuring of these parameters during crane operation, comparing of measured values with admissible values, and further forming of control signals or blocking of control by execution units in order to prevent exceeding of admissible values. Prior to commencement of crane work or in process of lifting and movement of cargoes crane-operator additionally performs preliminary visual control of crane operation condition or presence of people along way of crane or cargo movement or automatic control of correctness of slinging (securing) of cargo, or automatic check of correctness of crane installation on outriggers or optical measurement of crane performance parameters or automatic change of coordinate parity parameters using GPS receivers, radio-frequency or inertial determination of position devices located on obstacles, clothing or equipment of people. Results of this check or control ensue implementation of additional control or information signals.

EFFECT: enhancement of safety of crane operation and of crane efficiency.

24 cl, 1 dwg

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