Cargo-hoisting machine protection system

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

 

The invention relates to mechanical engineering and can be used in control systems lifting equipment with the functions of protection against overloads and from collisions with obstacles.

Known protection system of hoisting machines (crane) crane, containing an electronic unit that includes a digital computing machine and connected to the device input / output information, the display panel, the information processing unit, a decoder, and a range of control relays. To the electronic module connected to the sensor elevation angle of the boom, the boom length, weight, angle of rotation of the rotary platform, the roll angle and position of the supports of the crane [1].

In this system, set limits movements of the crane and the display modes is performed without operator (crane). The electronic unit by means of sensors produces a measurement of parameters and control modes of operation of the crane, selects one of the stored in its memory characteristics shutdown and output to the display panel all necessary for the operator information about the operation of the crane.

Setting restrictions to the movements of the crane and display modes without operator (without controls protection system) protects the crane only overload and cannot be used on modern jib cranes, is within the various modes of operation of the boom system, automatic registration which is impossible due to the lack of appropriate sensors. This system is not implemented well to protect the crane from collisions with obstacles (coordinate protection), because the limiting movements coordinate the protection traditionally carried out by an operator. This causes low efficiency of protection of the crane as a whole.

The lack of modes leads to the necessity of simultaneous display of multiple parameters of the machine (numeric, symbolic and alphanumeric information) and therefore the complexity of perception and increase error reading information by the operator.

Also known protection system of lifting machines (cranes)containing an electronic unit that includes a digital computing machine and connected to the controls, indicators, memory block and the device I / o information, and sensors operating parameters (angle of elevation of the boom, the boom length, weight, angle of rotation of the rotary platform of the crane and so on)connected to the inputs of the input-output information, the outputs of which are connected to the Executive unit [2].

In this system the operator using the controls located on the electronics unit, carries out input operating modes of the machine (position of sliding bearings, pistons Spasovka poly is pasta, the presence, length, and angle of inclination of the jib etc), constraints on coordinate protection and specifies the type of the parameters displayed on the indicators. Because of this protection is implemented lifting the machine from overload and from collisions with obstacles, and also ensures that the display values of those parameters, the control of which is necessary to the operator in accordance with the established mode of operation of the machine.

At the same time to set modes of operation security, restrictions on coordinate protection and switching the information displayed on the indicator, the operator must remove his hands from the levers (arms) control of the machine. If, for example, in the mode of the lifting operator is necessary to indicator height of the tip or the boom, it is necessary to remove the hand from the lever control for boom lift and press the button located on the electronics unit.

Similarly to the introduction or modification of restrictions on coordinate protection of the operator, acting on bodies (levers, handles) operating hoisting machine, installs any equipment, machine, such as an arrow, at the minimum allowable distance from obstacles that satisfies the applicable rules and regulations safety in construction. Next, the operator writes the coordinates of its spatial position in p is honoring the electronic unit by pressing the corresponding buttons on its front panel.

This leads to the fact that in the process of lifting the machine, the operator must repeatedly removed his hands from her arms control and alternately to affect both organs (arm) machine control, and controls (buttons, keys)displayed on the electronic unit.

Separation of the operator's hands from the controls of the machine increases his reaction when dangerous evolutions (dangerous or unexpected movements of the machine and reduces the security of its operation, and also reduces the ease of control of the machine.

These disadvantages are partially eliminated in the system of protection of hoisting machines (crane), closest to the proposed and containing the electronic unit, the Executive unit and sensors operating parameters of the lifting machine. The electronic unit is made in the form of a digital computer and connected to it controls, indicators, memory unit and input / output information, which is connected to the inputs of the control unit to the sensor operating parameters. The system contains additional controls security system, outside of the electronic unit on arms control hydraulic valves actuators lifting machine and connected to the device input / output information e nl is CA. Digital computing machine configured to cycle through the views displayed on the indicators of the parameters of the machine and change settings disable her movements on coordinate protection depending on the signals of additional controls [3].

Management modes, and set the coordinate protection in this system is carried out without isolation of the operator's hands from the controls of the machine. This increases the safety of its operation, improves the ease of operation and working conditions of the operator.

However, the initial input and changing modes of operation of the machine during its operation (task priority sections of the telescopic boom, permission or prohibition of combining lifting operations, disable blocking movements of the lifting machine to overload and coordinate the protection of a sliding supports, the degree of hoist winch part of the polyspast, availability, length and angle of inclination of the jib, main or auxiliary hoist and so on) known to the system are carried out using the controls located on the electronics unit.

It also requires separation of the operator's hands from the controls of the machine during its operation and, accordingly, reduces the safety operation of the machine and leads to deterioration of facilities management mash is Noah and working conditions of the operator.

In addition, the installation of controls security system directly on the bodies (arms) control of the machine, in particular on arms control hydraulic valves, leads to a complicated and not always technically possible.

The task, which is aimed at solving the proposed solution are:

- improving the safety of operation of loading of the machine by reducing the operator's reaction time in critical situations when changing the modes of operation of the protection system, the implementation of additional functions of the protection system and improve its reliability, as well as through the implementation of protective functions in case of partial failure of this system;

- improvement of facilities management hoisting machine and working conditions of the operator (with a corresponding increase safety of operation of the machine, caused by the reduction in the number of operator errors when managing a machine);

- simplification of the configuration of the security system of the lifting machine.

In the protection system of hoisting machine that contains the electronic unit is made on the basis of the microcontroller and connected to the device input / output information indicating unit, controls the security system outside of the electronic unit and the actuator and the sensor parameter is at work hoisting machine, connected to the device input / output information, and at least one body control protection system and the electronic unit is arranged to switch the form of at least one displayed on the indicating unit of the working machine and/or modify at least one parameter of operation of the system of protection based on output signals of at least one organ system management protection, technical problem solved by the fact that at least one body control protection system and the electronic unit is additionally configured to input and/or changes at least one mode of operation of the system of protection and indicating unit connected to the microcontroller and/or to the device input / output information of the electronic unit.

Under the input and/or adjustment of the operating system security means the job, in particular the order of the sections of the telescopic boom, and/or permission or prohibition of combining lifting operations, and/or disable blocking movements of the lifting machine loading and/or coordinate the protection of, and/or blocking of the suspension undercarriage, and/or mode of operation of the brake mechanism, lifting, and/or mode of operation of the brake mechanism to change departure time, and/or provision of nomination of the different supports, and/or extent of hoist winch part of the polyspast, and/or availability of the jib, and/or length of the jib, and/or angle of inclination of the jib, and/or the main or auxiliary hoist, and/or mode of operation of the Parking brake, and/or mode restricting the maximum height of the cargo, and/or blocking off magnetic or vacuum gripper, and/or enable a warning sound and/or light signal.

To achieve these objectives the indicating unit can be placed outside of the electronic unit and performed, in particular, in the form of a graphical display.

The system may be further provided with a video camera installed with a view of the working area of hoisting machine and connected to the device input / output information of the electronic unit, which is configured to output the image of the working area on the graphical display and the ability to change the settings of this image depending on the output signals of the management bodies of the security system.

In any embodiment of the system for the solution of tasks in the management bodies of the protection system can be placed at least on one machine electric or electro-hydraulic control drive mechanisms hoisting machine or made as a separate unit placed in often the spine, in the cab lifting machines in the area convenient operator access to these controls, for example, at least one arm of the chair operator.

The system may further comprise a built-in electronic unit and/or removable Registrar settings of lifting machine, made on the basis of the chip non-volatile memory and is connected to the microcontroller and/or to the device input / output information of the electronic unit. The composition of the Registrar, if necessary, can be incorporated real-time clock.

To achieve these objectives the device input / output information of the electronic unit and attached devices are configured to transmit/receive data through the serial multiplex channel and/or radio. While the electronic unit can be made removable. In particular, in the form of a pocket PC or PDA, or smartphone, or cell phone, or other portable device, designed to work under the control of the mobile operating system.

Implementation of the proposed protection system provides the ability to control the hoisting machine or without separation of the operator's hands from the levers (arms) control its drivers or their transfer to a minimum rasstoyaniyam these levers (arms) in the case of placing controls security system in a separate block, located in an area convenient operator access to them. This ensures safer operation of the machine by reducing the reaction time of the operator in critical situations, as well as improved ease of control of the machine and the working conditions of the operator.

Execution of the display device outside the electronic component and its implementation in the form of a graphical display, including the possibility of showing him the video provide the possibility of placing this device on a lifting machine in the area most convenient for reading information from it, and also increase the information content of the display information. This provides a reduction of operator errors in the management of hoisting machine and accordingly increases the safety of its operation.

The use of a separate (submitted) display unit, a serial multiplex channel or radio channel for communication, and the implementation of the electronic unit is removable, in particular in the form of a pocket PC, pocket PC or other portable device running a mobile operating system that allows you to improve hardware reliability of the protection system and save a number of protective functions in case of partial failure of the system. Considering the fact that the failure of the system security and is one of the common causes of accidents hoisting machine, it also increases the safety of her work.

Therefore, the distinctive characteristics of the proposed protection system are in direct causal connection with the solution of technical problems.

The drawing shows a functional diagram of the proposed device.

Protection system hoisting machine contains the electronic unit 1, is made on the basis of the microcontroller 2 and the devices connected to the I / o information 3, a display 4, controls protection system 5 located outside the electronic unit, the Executive unit 6 and the sensor parameters hoisting machine 7.

The device input / output information 3 provides the coordination logic level input and output signals of the microcontroller 2 with other functional units of the system and based on the front-end chips. Data transfer in the system depending on the version of the device input / output information 3 and the interface circuits connected devices carried by 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 7, set the transponder with appropriate ejstvujuschij antennas.

The actuator 6 may be made in the form of a set of electromagnetic power relay or the power electronics switches, connected to the electro-hydraulic or electromagnetic actuators actuators lifting machine. If necessary, it may contain a microcontroller and some interface scheme for wired or wireless communication with the electronic unit 1.

The sensors 7 in the General case include the sensor elevation (tilt) of the boom, the sensor length of the boom, the sensor weight (force sensor or a pressure sensor), a sensor of the angle of rotation of the rotary platform lifting machine (sensor azimuth), the limit switch hoist lifting body proximity sensor to the transmission line, the sensors of the provisions of the manual controls actuators and other sensors, the installation of which is determined by the specific design of hoisting machine, on which you are installing the security system. Part of the sensors 7 can enter the camera.

As the electronic unit 1 may use as a specialized master controller, permanently installed on the hoisting machine, and standard fixed or removable devices. In particular, industrial or pocket personal computer, comm is nicator, smartphone, cell phone or any other portable device which has a capability under the control of a mobile operating system. In this case, the smart phone means the phone with advanced data processing, and device - PC with phone function. This device is running one of the mobile OS (Windows Mobile, Symbian and so on), the main function of which is data processing and the execution of application programs.

When used in the protection system, removable electronic unit 1, the operator or maintenance personnel hoisting machine sets this unit to the lifting machine before starting her work and connect to the security system with the help of available on the portable electronic unit electrical connector or radio communication.

The electronic unit 1, if necessary, may contain embedded controls 8 and indicators 9. They perform a service, such as control functions.

Basic controls protection system 5 is placed outside the electronic unit 1 in the cab lifting machine, in the area convenient operator access to these controls. In particular, on the handles of the machines electrical or electro-hydraulic control drive mechanisms hoisting machines. At the one location of these bodies are the upper part of arms control. They can also be made as a single unit and placed in the arms of the chair operator hoisting machines.

The display device 4 can also be placed in the cab lifting the machine out of the electronic unit 1. It may contain both character and graphics, such as TFT LCD, led (display), 10, single LEDs, buzzer, etc.

For management indicator (display) 10 for connection with the electronic unit 1 for receiving data via a wired or wireless interface, the display device 4 may include a controller 11, run standalone or built-in display 10. To control the display modes - brightness, contrast, etc. - indicating unit may contain controls indicators (display) 12.

If the security system is equipped with a video camera, it is similar to other sensor 7 is connected to the device input / output information 3 electronic unit. In this case, the image of the working area of the crane is displayed on the graphical display 10. The parameters of this image: the image scale or width of the field of view, the position of this zone relative to the lifting body, etc. are regulated by the microcontroller 2 depending on the output signals of the controls system protection 5./p>

The protection system may further comprise a built-in electronic unit and/or removable Registrar settings 13 hoisting machine, made in the form of a block of non-volatile Flash memory 14 and is connected to the microcontroller 2 and/or to the device input / output 3 of the electronic unit 1. (Conventionally in the drawing shows the first option). Registrar settings 13 may further comprise a real time clock 15.

The protection system operates as follows.

Before you begin hoisting machine operator using controls protection system 5 provides the input to the microcontroller 2 parameters and modes of operation of the protection system. These include, in particular, the parameters of the coordinate protection, the type and parameters used on the boom (lifting) equipment: the presence, length and angle of inclination of the jib, main or auxiliary hoist, the degree of hoist winch part of the polyspast etc. and other parameters and modes of operation of the machine (system security)that is dependent on the ongoing operation of the lifting/moving of cargo and design of the hoisting machine. One of them can enter the position of sliding bearings, the necessary sequence of extension and locking of the sections of the telescopic boom, the permission or prohibition of combining lifting operations, disabling the lock is of the movements of the lifting machine overload or coordinate the protection, blocking the suspension undercarriage, the mode of operation of the brake mechanisms for lifting and alteration of departure, mode of operation of the Parking brake, and limit the maximum height of lifting, blocking off magnetic or vacuum gripper, etc. of these parameters and modes can be entered or changed using the controls 8 of the electronic unit 1.

The entered values are stored in the memory of the microcontroller 2 and/or in the memory unit 14 of the electronic unit 1 and is used to set or change the permissible modes of operation of the machine and values her work load or position of the lifting equipment.

Management of lifting machine (hydraulic or electric actuators) is carried out by the operator at the controls of the machine (in the drawing conventionally not shown), and implementation of security features this machine is by blocking this control using actuators 6 (enable/disable signals to the solenoids of valves installed in the hydraulic system of the machine, or electromagnetic actuators). In the case of the use of devices such as electric or electro-hydraulic control drive mechanisms hoisting machines these machines can perform the function is the control of the machine, blocking of the control signals from the electronic unit 1 and a signal-conditioning control system of protection. I.e. the control devices of the machine can be combined with control protection system 5 and the actuators 6.

When the machine is in operation the sensors operating parameters 7 provide measurements of the boot parameters of the machine and position it lifting (boom system). The microcontroller 2 of the electronic unit 1 operates according to the program stored in its memory or in the memory unit 14, and through the device input / output 3 in turn makes a request to receive information from each sensor 7. The results of measurements from sensors on separate lines on the multiplex communication line or over the air through the device I / o information 3 go to the microcontroller 2.

After receiving information from the sensors 7, the microcontroller 2 to known functional dependencies inherent in the program, determine the current load of the machine and the position of her lifting (boom) equipment. Next, the microcontroller compares the actual loading of the machine with the maximum allowable specified in the form of cargo characteristics stored in the microprocessor memory or in the memory unit 14, and a comparison of the actual position of grusome yameogo equipment with valid area provisions specified with the introduction of coordinate protection. Depending on the results of these comparisons microcontroller 2 via the device I / o information 3 transmits to the control device 6, the signal blocking switching mechanisms of the machine, carrying automatic overload protection and from collisions with obstacles (coordinate protection).

When the machine is in operation the operator's hands are on the body (arms, levers) management of its hydraulic or electric drive (Executive) mechanisms. If necessary, change the setting or mode of operation of the protection system, for example when switching to another operation or to another phase of operation of the lifting/moving of cargo, the operator acts on the appropriate governing body protection system 5 located either directly on the body (handle) of the control of the machine or in the immediate vicinity. For example, in the armrest of his chair. So to change the settings or mode of operation of the system requires minimal movement of the operator's hands. This ensures easy control of the machine and, more importantly, decreases the reaction time of the operator in case of dangerous evolutions (dangerous or unexpected movements of the machine. Due to this increased safety e the work.

Critical parameters, such as degree boot on freight time is continuously displayed on the indicator (in the display) 10. Additional parameters are displayed for the operator. Their selection and switching, such as circular, are carried out in a similar way with the help of government protection system 5. This reduces the number of simultaneously displayed parameters, which leads to simplification of perception parameters by the operator, reducing the number of errors of the read information, and, consequently, to increase the safety of hoisting machines.

This results in the use of video and graphics display output on the display of the video image of the working area of hoisting machines.

By separating the management bodies of the protection system 5 and the display unit 4 opens the possibility of placing the display unit in the area most convenient for reading out the data, and controls the area most convenient for access to the operator. It also leads to greater ease of control of the machine and, consequently, to increase the safety of its operation. At the same time, this separation leads to reduction of the sizes of the individual components of a system that facilitates their placement (layout) ka is the twin lifting machinery.

The implementation of the electronic unit removable increases safety and provides protection from damage during non-working condition of the machine. This increases the probability that the operating state of the block and, as consequence, to decrease accidents lifting machines, due to a malfunction of the protection system.

In the proposed protection system loading is possible to implement various combinations of its characteristics set forth in the claims as alternatives.

According to the restrictive part of the formula in the system can be switch types parameter of operation of the machine displayed on the device display, or changing the numerical values of the parameters of the protection system, in particular the parameters of the coordinate protection. It is also possible implementation of a system with a simultaneous change of both species displayed parameters, and parameter values of the security.

Obviously, any combination of these characteristics provides receive the same technical results: 1) improving the safety of hoisting machines (primarily by reducing the reaction time of the operator), 2) ease of control of the machine and working conditions of the operator and 3) simplification of the layout of the system on the machine.

Alternative signs in the characterizing part of the form is s provide the opportunity for the input of various operation modes of the protection system or changes or the possibility of new modes of system operation, and modify previously entered.

Depending on the implemented system combinations of these parameters only change is in the level of achievement of the first - degree increase the safety of operation of loading the machine through the implementation of various additional functions for its protection. On the second level and the third received technical results are not affected. Moreover, the use of different combinations of these characteristics with any alternative signs restrictive part of the formula results in the same technical results. The reason for this is the different functions of the security system described these alternative characteristics in restrictive and distinctive parts of the claims.

Finally, the display device can only be connected to the microcontroller, only to the device input / output information of the electronic unit, or simultaneously using different communication lines. Obviously, this reflects only a particular functional circuit protection systems and design features of the display unit and does not affect the receipt of these technical results.

The system can be implemented with the ability to enter or change, or both input and modify the hypoxia modes of operation of the protection system. These modes are described in the dependent claim. From the above description of the operation of the system of protection, it follows that it can be implemented input and/or change any of the modes of operation of the protection system or two or more of these modes in any combination. It affects only the rate of increase of safety of hoisting machine, the first of these technical results. This dependence is due to the increase in the number of additional functions to be implemented protection system, increasing the number of input and/or changing modes of protection. On the level of achievement of the second and third technical results are not affected.

In the end the invention with these alternative features covers various possible variants of its performance and cash equivalents without departure from the invention set forth in the formula, and without changing the resulting technical results.

Sources of information

1. EN 2129524 C1, MPK B66C 23/88, B66C 13/18, 27.04.1999.

2. US 5730305, MPK B66C 13/16, 13/18, 24.03.1998.

3. EN 2237006 C2, MPK7 B66C 13/18, 13/56, 27.09.2004.

1. The system of protection of hoisting machine that contains the electronic unit is made on the basis of the microcontroller and connected to the device input / output information indicating unit connected to MIC the controller and/or device I / o information of the electronic unit, controls protection system located outside the electronic unit and the actuator and sensors settings lifting machines connected to the device input / output information, and at least one body control protection system and the electronic unit is arranged to switch the form of at least one displayed on the indicating unit of the working machine and/or modify at least one parameter of operation of the protection system, wherein the at least one body control protection system located outside the electronic unit and the electronic unit advanced made with the possibility of entering and/or modifying at least one mode of operation of the system of protection in terms of job priority sections of the telescopic boom, and/or permission or prohibition of combining lifting operations, and/or disable blocking movements of the lifting machine loading and/or coordinate the protection of, and/or blocking of the suspension undercarriage, and/or mode of operation of the brake mechanism, lifting, and/or mode of operation of the brake mechanism to change departure time, and/or sliding supports, and/or degree of hoist winch part of the polyspast, and/or availability of the jib, and/or length of the jib, and/or angle of inclination of the jib, and the work and the main or auxiliary hoist, and/or mode of operation of the Parking brake, and/or mode restricting the maximum height of the cargo, and/or blocking off magnetic or vacuum gripper, and/or enable a warning sound and/or light signal.

2. The system according to claim 1, characterized in that the display device is placed on the lifting machine outside of the electronic unit.

3. The system according to claim 2, characterized in that the indicating unit made in the form of a graphical display.

4. The system according to claim 3, characterized in that it is further provided with a video camera installed with a view of the working area of hoisting machine and connected to the device input / output information of the electronic unit, which is configured to output the image of the working area on the graphical display and the ability to change the settings of this image depending on the output signals of the management bodies of the security system.

5. System according to any one of claims 1 to 4, characterized in that it additionally contains at least one unit of electrical or electro-hydraulic control drive mechanisms hoisting machine that hosts at least one management body protection system.

6. System according to any one of claims 1 to 4, characterized in that the controls protection system made in the form of Dalnego block.

7. System according to any one of claims 1 to 4, characterized in that controls the security system is placed in the cabin of the hoisting machine in the area convenient operator access to these controls.

8. The system according to claim 7, characterized in that controls the security system is placed at least in one side of the seat of the operator of the lifting machine.

9. System according to any one of claims 1 to 4, characterized in that it further comprises a built-in electronic unit and/or removable Registrar settings of lifting machine, made on the basis of the chip non-volatile memory and is connected to the microcontroller and/or to the device input / output information of the electronic unit.

10. The system according to claim 9, characterized in that the logger parameters contains a real time clock.

11. System according to any one of claims 1 to 4, characterized in that the device input / output information of the electronic unit and attached devices are configured to transmit/receive data through the serial multiplex channel and/or radio.

12. System according to any one of claims 1 to 4, characterized in that the electronic unit is made removable.

13. The system of item 12, wherein the electronic unit is made in the form of a pocket PC, or PDA, or smartphone, or cell phone, and other portable devices made with the possibility under the control of a mobile operating system.



 

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16 cl, 1 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 machinery.

SUBSTANCE: invention can be used in automated protection and control systems of load-lifting cranes. Load-lifting machines drive is controlled by operator acting onto control member, transmission of shifting of said member to control member of drive made to shift any mechanism of load-lifting machine depending on movement of control member, and preliminary determination of tolerable value of at least one parameter characterizing load and/or spatial position of boom or load-gripping member of load-lifting machine, keeping the parameter value in memory, measuring said parameter by direct or indirect method in process of operating of load-lifting machine, comparing measured value with tolerable value and subsequently shaping drive control signal. Control signal is used to interlock shifting of drive control member and if, necessary, to reset member in neutral position. Interlocking of drive control member is done by mechanical blocking of transmission of control member shifting to drive control member or mechanical interlocking of displacement of said member.

EFFECT: increased reliability.

6 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: 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: mechanical engineering.

SUBSTANCE: invention relates to safety and control systems of load lifting cranes. Proposed method of supply of measuring and control component part of safety and control system arranged on boom or tackle block of load-lifting crane comes to use of self-contained supply source with automatic charging the source from generator - converter of mechanical energy of moving load or boom wire rope of load-lifting crane or block directing or supporting the wire, rope, into electric energy. According to invention, said component part of safety and control system of crane provides measuring of at least one operating parameter and control of loads, particularly, marker light and/or headlight. To charge self-contained supply source, in additional of wire rope motion energy, use can be made of energy of external mechanical actions, solar energy or heat energy of surrounding medium. Transmission of data between component parts of system can be provided by wireless data exchange channel.

EFFECT: facilitated maintenance, increased reliability, provision of serviceability of safety and control system of crane.

16 cl, 2 dwg

FIELD: mechanical engineering; load-lifting cranes.

SUBSTANCE: invention can be used in control and protection system of load lifting cranes to preclude overloads and damage in crane mechanisms. Proposed system consists of separate parts made in form of at least one electronic unit and pickups measuring parameters of load-lifting crane. To supply electronic circuit of any component of safety system use is made of self-contained supply source which is constantly or periodically charged. Conversion of mechanical energy of load or boom rope, or energy of measured parameter of operation of load-lifting crane, mechanical energy of measured load in boom or load rope, angle of azimuth length of boom, etc or hydraulic energy of measured pressure in hydraulic cylinder or in hydraulic boom lifting/lowering motor, load-gripping member or slewing platform of load-lifting crane or energy of external mechanical, acoustic or heat ambient medium onto parameter pickup of load lifting crane into electric energy is provided.

EFFECT: simplified servicing, improved reliability, provision of serviceability of safety system at cut off supply.

23 cl, 1 dwg

FIELD: materials handling facilities; crane safeguards.

SUBSTANCE: invention relates to overload and damage protection of load-lifting cranes and cranes-pipelayers. Proposed method comes to adjusting at least one signal in at least one load measuring channels and/or reach, and/or luffing angle to provide correspondence of safeguard switch off characteristic to preset load characteristic of crane by adding and/or multiplying results of direct or indirect measurement of at least one of crane operating parameters and signals corresponding to adjustment parameters whose values are stored in non-volatile memory of safeguard. Values of adjustment parameters are determined to provide independent switching off characteristic of safeguard from direction and/or speed of boom movement or speed of movement of crane load gripping members. Different adjustment parameters for different directions and/or speeds of boom and/or load-gripping member can be set.

EFFECT: simplified mounting and servicing of safeguards on crane, improved accuracy of realization of protection functions.

18 cl, 2 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

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