System to prevent collision of hoisting cranes

FIELD: transport.

SUBSTANCE: proposed system relates to construction equipment and can be used to prevent collision of hoisting cranes. Proposed system comprises data exchange hardware mounted on every crane, crane spatial position transducers and digital computer. The latter receives and processes output signals of transducers and data exchange hardware and to generate warning and/or interlocking signal, depending upon data processing results, when the crane approaches the other crane or stationary obstacle that have coordinates or parametres entered into digital computer memory. Digital computers allow data exchange with the help of data exchange hardware and using said data for signal processing and generating warning or interlocking signals. Wireless data exchange hardware can use ultrasound, and/or optical, and/or electromagnetic radiation and can determine the distance between said hardware components from time said radiation passes there between.

EFFECT: expanded operating performances, higher safety.

10 cl, 1 dwg

 

The invention relates to techniques for ensuring the safety of cranes, mainly tower.

A well-known system of protection against collisions group of tower cranes "SMIE-AC30" (France), containing the device wired (cable) or wireless (radio) exchange of information between the protection devices installed on each of the "N" working in a group of tower cranes, position, motion and load his equipment, and installed on each valve protection device of the crane, which includes a group of sensors, control equipment parameters of the crane and digital computer containing a Central processing unit (microcontroller), the display and the Executive block. Digital computers are connected by cable or radio, forming a network for the exchange of information about position, movement and loading cranes. The position of the crane and its equipment in this system are "tied" to specific areas of the site. Digital computer, controlling the position of load and speed of movement of the crane and its equipment, detects dangerous approach cranes. Digital computer on another faucet produces a similar calculation for his cock, and both devices to share their results [1].

In this system, when calculations indicate dangerous contiguous and equipment cranes, each digital transmitter generates appropriate warning signals and the signal blocking movements of the crane. On their displays callouts graphics provisions cranes on the construction site, the forbidden image (blocked) security zones, corresponding to the collision and a dangerous approach, the direction of dangerous movements and paths safe output taps of the overlapped zones.

Known also similar security system, in which, to improve the safety and efficiency of cranes, on-screen display advanced information signals are formed which precedes the beginning of the movement or restricting the movement of the crane equipment in case of a possible intersection of the trajectories [2].

A disadvantage of known systems is the reduced security and reduced the effectiveness of the simultaneous operation of cranes due to the lack of both direct determination of the distance between them, and prevent their collisions with stationary obstacles and objects.

The main task to be solved by the claimed invention is directed, is to expand the functionality of the protection system by implementing direct control and subsequent measurement of the distance between the taps and the locations of fixed ven is tsti and objects on a construction site with a corresponding increase of safety of work group of cranes.

An additional objective is to increase the efficiency of the work of a group of cranes due to the formation of additional information signals or restrictions of movements of the crane equipment in case of a possible crossing their paths, as well as by reducing the time spent on the installation parameters or location coordinates of stationary obstacles and objects on a construction site.

In the first variant implementation of the system of protection of cranes from collisions containing installed on each valve device of the wireless communication, sensors spatial position of the crane and single or multi-unit digital computing device which has a capability of receiving and processing the output signals of these sensors and devices for wireless communication, as well as the possibility of the formation, depending on the results of this processing, a warning signal and/or signal blocking movements of the crane when it is closer or predicted convergence with another crane, a technical problem is solved due to the fact that the devices of the wireless exchange of data located on different cranes, run with the ability to determine the distance between them, and at least one digital computing device is performed with the possibility of the completely specified signal processing and generation of a warning signal and/or signal blocking movements of the crane with respect to this distance.

In the second variant implementation of this system of protection, containing installed on each valve device communication, sensors spatial position of the crane and single or multi-unit digital computing device which has a capability of receiving and processing the output signals of these sensors and data devices, as well as the possibility of the formation, depending on the results of this processing, a warning signal and/or signal blocking movements of the crane when it is closer or predicted convergence with another crane or with a fixed obstacle, the coordinates and/or parameters of which is recorded in the memory unit of the digital computing device, a technical problem is resolved by what digital computing device executed with the ability to communicate about the coordinates and/or parameters, stationary obstacles or object using these devices for data exchange, as well as the possibility of using these data for a given signal processing and the formation of the warning signals and/or signal blocking movements of the crane.

In addition, in both cases, the system of protection against collisions for solving the tasks can be implemented:

- performance devices besprovodnoy the exchange of data with the use of ultrasonic, and/or optical and/or electromagnetic radiation, and with the ability to determine the distance between them at time of passage of this radiation between devices;

- performance of wireless devices communicate with the possibility of receiving and transmitting information about position, movement and loading of equipment corresponding valve;

- calculation through a digital computing device, the distance between installed on cranes wireless devices communicate using signals of sensors of the spatial position of his and another crane, a subsequent comparison of the calculated values of this distance with the distance defined by the devices of the wireless communication, and when getting different values the formation of an additional warning signal and/or signal blocking movements of the crane or choosing the lowest values of this distance in the formation of a warning signal and/or signal blocking movements of the crane;

- determination through a digital computing device, the borders of the forbidden security zone around arrows each valve corresponding to their convergence to the minimum allowable distance, the implementation of signal processing sensors and devices for wireless communication, the conclusion is the growing in the detection of crossings in the forbidden zone with the subsequent formation of a warning signal and/or signal blocking movements of the crane;

equipment digital computing device, a graphical display connected to the processor or microcontroller computing device, displaying on the display screen graphic image position of the crane on the site plan and conditional graphical image of the other provisions or other valves and/or exclusion zones security;

- display on the display screen of the trajectories of moving cranes and/or their equipment and display the current and/or projected points or intersections of the boundaries of these forbidden zones.

- defining the boundaries of the forbidden areas of security, taking into account the inertia of the floating equipment of the crane;

- equipment of digital computing devices, at least two cranes, blocks of memory, which contains the coordinates and/or parameters fixed obstacles or objects on a construction site, and the implementation of data exchange between digital computing devices on these coordinates and/or parameters using the devices of the wireless data exchange with the subsequent use of these data when forming the warning signals and/or signal blocking movements of the crane;

- comparison by the digital computing device, location data and/or p is the parameters stationary obstacles or object, read from its own memory block from a memory block of the digital computing device of another crane, and where there is any inconsistency between these data and subsequent selection of the lowest zone of permissible movements of the crane and/or the formation of a warning signal and/or signal blocking movements of the crane;

- transmission of the coordinates and/or stationary obstacles or objects to be written to memory blocks of a digital computing device, one or more cranes from fixed stations in the digital computing device using available devices, wireless communication, or additional serial devices wired or wireless interface;

equipment digital computing devices Registrar settings of a crane with a real time clock.

Thanks to the implementation of these distinguishing features of the proposed protection system has enhanced functionality through the implementation of direct control and subsequent measurement of the distance between the taps and the implementation of protection against collisions cranes with fixed obstacles and objects on a construction site.

Direct control or direct measurement of the distance between the taps allows you to control this distance, the high the th accuracy and reliability and regardless of the performance and the accuracy of the sensors of the security system.

The exchange of information about the coordinates and/or options fixed obstacles (objects) between digital computing devices located at various cranes, as well as the transfer of these data from fixed stations simultaneously on several cranes increases both the efficiency of the protection system, i.e. the safety of crane operations and productivity by reducing time lost on account of these parameters in a storage device.

The formation of additional information signals, anticipating the beginning of the movement or restricting the movement of the crane equipment to their dangerous proximity, in some cases eliminates the need for a crane operator to bypass or return movements of cranes, which also increases the effectiveness of their work, including the reduction of unproductive losses of time and energy losses.

Figure 1 shows a simplified block diagram of the system of protection of cranes from collisions. Figure 2 - fragments of the image, the equipment of two adjacent taps on the screen display.

The system contains installed on each valve device of the wireless communication 1 (1') (figure 1, figure 2) sensors operating parameters of the crane 2 (2') and a single-piece or multi-unit digital computing device 3 (3'), receipt and education is otcu their output signals (figure 1). Figure 1 is a conditionally shows the components of the systems 1, 2 and 3 (1', 2' and 3') for the two cranes. Their number can be any value in a specified range.

Each digital computing device 3 (3') has a single-piece or multi-execution and contains the Central processor or microcontroller 4 (4') and United with him display 5 (5'), the memory unit 6 (6') and the output device 7 (7'), the outputs of which are connected to actuators or actuators crane.

Digital computing device 3 (3') may contain additional nodes and blocks, not shown conventionally in figure 1 and connected to the microcontroller 4 (4') either directly or through any matching devices. These include, in particular, an additional block of non-volatile memory of the logger parameters with real-time clock, interface for wired or wireless data capture Registrar settings, device, sound or voice alarm systems, system controls, discrete LEDs, etc.

The Central processor or microcontroller 4 (4') in the General case contains a processor core, built-in storage device for storing data and programs of his work, the clock generator and peripherals.

Sensors operating parameters of the crane 2 (2') in the General case, including the Ute detectors spatial position of the crane (azimuth angle, the angle and length of the arrows, the position of the crane on the crane path, move the trolley along the guide belts jib crane lifting height lifting body etc), load cell (force or pressure in the lift cylinder boom), proximity sensor for power lines and other sensors, the necessity of which is determined by the design of a particular crane.

The Central unit of the digital computing device 3 (3') may be cited as the controller, the data processing unit, a display unit, information and control or computing unit, etc. that does not matter.

Connecting a data device 1 (1') and sensor 2 (2') to a digital computing device 3 (3') can be performed by a multiplex channel of communication (CAN, LIN, and so on) using separate wires or by radio.

The output device 7 (7') may be cited as the Executive or the output unit, the controller rotary or rotary part of the crane, etc. depending on the structural design of the Executive actuators crane he made in the form of power amplifiers (set of electronic switches, relays, contactors, etc.), electro-hydraulic control valves, Electromechanical posizione the s etc. It can contain its own microcontroller and means for connection to the Central microcontroller 4 (4') of the digital computing device 1 (1') through the multiplex communication channel. The output device 7 (7') may also be configured to relay part or all of the output signals of the data device 1 (1') and sensor 2 (2') in a digital computing device 3 (3').

The sensors 2 (2')that can be called peripheral recording devices, peripheral controllers, measuring devices, etc. placed in different zones of the crane and include analog sensors with analog-to-digital converters and digital sensors.

Data device 1 (1')located on different cranes (figure 2), for example on the tips of their towers, in the first embodiment, the protection system is made wireless with the use of ultrasonic, optical, or electromagnetic radiation. Contained in the receivers and transmitters serial digital signals for data exchange is arranged to determine the distance between them, in particular, at the time of passage of this radiation between devices. This can be used technology NanoLOC developed by Nanotron (www.nanotron.com).

Devices exchange data and 1 (1') (transceivers TRX) nanoLOC, installed on various lifting cranes, can realize different network topologies that support direct and random access to the transmission medium. Direct access can be implemented according to the scheme with temporary TDMA or FDMA frequency division or on a "master - slave". A random access method multiple access with carrier detection and prevention of collisions (CSMA/CA).

These devices provide both data transmission between digital computing device 3 (3'), and distances between points of their installation on a variety of lifting cranes. If direct determination of the distance between the devices of communication 1 (1') is not required, they can be implemented using wired communication lines.

The system of protection of cranes from collisions is as follows.

During the initial installation of the system can adjust its settings on the valves, first of all sensors 2, with the purpose of its bindings to the site.

During operation of the system all digital computing device 3 (3') are similar to each other.

The signals of the sensors 2 control equipment parameters of the first crane is coming to the microcontroller 4, which determines the position of the equipment of the first crane and the load on it to determine the inertia of the movement with their simultaneous PE is educa on the second valve device usage data exchange 1 and 1'. Changing the position of the equipment of the first crane, fixed sensor 2 is converted by the microcontroller 4 in magnitude, direction and trajectory of its movement simultaneously with the conditional graphical representation of the equipment of the crane are displayed on the display 5 on the plan of the site (figure 2).

Simultaneously, the microcontroller 4, using the signals received from the sensors 2' of the second valve devices for data exchange 1 and 1', generates a display screen 5 conditional graphical representation of the equipment of the second valve. This information on the displays 5 and 5' is displayed, for example, in the form of projections of their equipment (arrows).

Simultaneously, the microcontroller 4 digital computing device 3, working on a program previously recorded in its memory, using signals received from sensors 2 and 2', and determines using the display 5 displays the boundaries of the forbidden security zone around the boom (boom system) each valve corresponding to their convergence to the minimum allowable distance, taking into account velocities and inertia of this equipment.

When detecting intersections of the exclusion zone safety equipment various cranes or projected intersection of intervals of time, the microcontroller 4 generates the output device 7 that is roditelniy signals and the signal blocking movement of the first valve. At this point in time, the microcontroller 4' digital computing device 3' of the second valve similarly generates warning signals and the signal blocking movement of the second valve. This ensures the prevention of collisions cranes.

In addition to the specified computing distances between equipment cranes on signals from sensors 2 and 2' in the microcontroller 4 from the wireless data device 1 receives an additional signal about the distance between the equipment cranes, obtained as a result of its direct measurement.

The microcontroller 4 implements its functions of protection against collisions cranes, using the calculated distance and measured. This is a comparison of their values and subsequent generation of warning signals and/or signal blocking movements of the crane or after selecting the smallest value of the two received values of the distance or the automatic generation of these signals in the presence of significant differences of these quantities. This ensures increased safety of crane operations regardless of any error of sensor spatial position of any crane, and in the case of a complete failure or absence of the sensor.

If the construction site of any fixed PR is padti or objects, collisions with whom or work in the area which, in particular over them, should be avoided, their coordinates and/or parameters are written to the memory unit 6 digital computing device 3. Recording is carried out by transferring the relevant data from fixed stations via the data exchange device 1, by dialing on the controls (on the keyboard) digital computing device 3, by connecting the external storage media, etc.

Next, the microcontroller 4 uses this information to generate the conditional graphical display of these obstacles or objects on the display screen 5, and when the formation of the warning signals and/or signal blocking movements of the crane.

Coordinates and/or parameters fixed obstacles or objects recorded in the memory unit 6 or 6' digital computing device 3 or 3' of one of the cranes, devices exchange data 1 and 1' are transferred to another valve, which reduces the time for recording (input) these coordinates or parameters and, accordingly, reduces the downtime of the crane and to improve their performance.

Coordinates and/or parameters fixed obstacles or objects can be written in the memory 6 or 6' on both valves from a single source of information from the Stazione is mogo post using available devices, wireless communication, or additional serial devices wired or wireless interface. This reduces the time spent on the account.

If these coordinates and/or parameters recorded at each valve independently, there may be differences. In this case, the microcontroller 4 after communicating with another crane carries out a comparison of their values "given" to a specific crane. If you do not match these values, the microcontroller 4 selects the lowest zone of admissible displacements equipment crane or generates a warning signal about the wrong coordinates input and/or stationary obstacles or objects blocking, if necessary, the movements of the crane.

If necessary, the microcontroller 4 passes on the display 5, the signals for display on its screen images projected or already encountered in the operation of the valve intersections protection zones security of their equipment, as well as allowed or preferred from the viewpoint of the performance or safety of operation of the crane, directions, moving his equipment. The borders of all the forbidden security zone is determined by the microcontroller 4, in particular, with the use of a mathematical model of the crane, pre-recorded in his memory, and taking into account the inertia of the float equipment.

All kinds and directions of movements of the crane from the microcontroller 4 digital computing device 3 mo the ut transmitted in Registrar settings and recorded it in real time for further monitoring and analysis of the operation of the crane.

The invention also allows other options for the implementation of security hoisting crane, containing the features set forth in the formula.

Sources of information

1. Given Rafikova. Anti-collision system "SMIE-AC30" protection of cranes. The magazine Lifting facilities. Special technique." - 2001, No. 4.

2. EN 2326046 C1, B66C 13/18, B66C 23/88, B66C 15/00, 10.06.2008.

1. The system of protection of cranes from collisions containing installed on each valve device communication, sensors spatial position of the crane and single or multi-unit digital computing device which has a capability of receiving and processing the output signals of these sensors and data devices, as well as the possibility of formation depending on the results of this processing of the warning signal and/or signal blocking movements of the crane when it is closer or predicted convergence with another crane or with a fixed obstacle, the coordinates and/or parameters of which is recorded in the memory unit of the digital computing device, wherein the digital computing device is made with exchange coordinate data and/or parameters, stationary obstacles or object using these devices exchange data, and used the I these data for a given signal processing and generation of a warning signal and/or signal blocking movements of the crane, and data devices made wireless using ultrasound and/or optical and/or electromagnetic radiation, and with the ability to determine the distance between them at time of passage of this radiation between devices.

2. The system according to claim 1, wherein the digital computing device is configured to map the location data and/or parameters, stationary obstacles or object is read from its own memory block from a memory block of the digital computing device of another crane, and obtain different values for these coordinates and/or options with a choice of smallest zone of permissible movements of the crane and/or the formation of a warning signal and/or signal blocking movements of the crane.

3. The system according to claim 1, wherein the digital computing device is configured to calculate the distance between installed on cranes devices of the wireless communication using the output signals of the sensors of the spatial position of his and another crane, with the possibility of comparing the calculated values of this distance with a certain mobile devices wireless communication and receiving various quantities of this Rass the sustainability of the possibility of forming additional warning signal and/or signal blocking movements of the crane or with the possibility of choosing the smallest value of this distance in the formation of a warning signal and/or signal blocking movements of the crane.

4. The system according to claim 1, wherein the data device is configured to transmit and receive information about position, movement and loading of equipment appropriate crane.

5. The system according to claim 1, wherein the digital computing device is configured to determine the borders of the forbidden security zone around arrows each valve corresponding to their convergence to the minimum allowable distance, and the signal processing includes detection of crossing the border of the restricted security zone with the subsequent formation of a warning signal and/or signal blocking movements of the crane.

6. The system according to claim 5, wherein the digital computing device is configured to account for the inertia of the floating equipment of the crane in the definition of the boundary of the restricted area security.

7. System according to claims 1, 5 or 6, characterized in that at least one unit of the digital computing device includes a graphical display connected to the processor or microcontroller digital computing device, and a display and a processor or microcontroller configured to display on the display screen graphic image position of the edge is and on the site plan and conditional graphical image of the other provisions or other valves and/or exclusion zones.

8. The system according to claim 7, characterized in that the processor or microcontroller and display digital computing device is configured to display on the display screen of the trajectories of moving cranes and/or their equipment and display the current and/or projected points or intersections of the boundaries of these exclusion zones.

9. The system according to claim 1, characterized in that the coordinates and/or parameters of stationary obstacles or object are copied into the memory blocks of the digital computing device, one or more cranes, transmitted from a stationary position in a digital computing device with the use of these devices, wireless communication, or by means of additional devices serial wired or wireless interface.

10. System according to any one of claims 1 to 6, 8, 9 characterized in that the digital computing device further comprises Registrar settings of a crane with a real time clock.



 

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8 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: invention relates to pick-and-place machine building, particularly to method of adjustment of safety device of climbing cranes of jib type with equal crane equipment. Method includes mounting of adjusted device on outfitted crane, connection to it load transducer and attitude position transducers of jib type equipment and adjustment of signals in measurement of load channels, outreach and/or angle of slope of jib from condition of providing of correspondence of run-down characteristic of device to specified cargo properties of crane. Method includes copying from nonvolatile memory of safety standard instrument, adjusted in advance on single-type, standard crane with usage of tare cargoes of specified weight, into nonvolatile memory of adjusted device information about measured values of load, boom and/or angle of slope of jib in points of cargo property of crane with known parametres of boom equipment. Copying is implemented before and after mounting of adjusted device on new outfitted crane or on crane, which is in operation after its relocation with removing of transducers and its following installation during crane mounting. After mounting of adjusted of transducers on outfitted crane and connection to its of transducers it is installed boom of outfitted crane into one of positions in the limits of working range angles of slope and azimuth, there are measured parametres of its boom equipment in particular position of boom and there are adjusted signals in channels of load measurement, boom and/or angle of slope of jib by means of addition of pickup signals of adjusted device with signals, corresponding difference of values of pickup signals on measured boom of outfitted crane and equal to it boom of standard crane.

EFFECT: achieved decreasing of labour-intensiveness of safety device adjustment.

2 cl

FIELD: construction industry.

SUBSTANCE: invention refers to safety and control systems of travelling hoisting cranes and cranes with movable equipment. Safety system includes digital unit, to data inputs of which there connected are crane parametre sensors containing at least one movement sensor, actuating unit connected to outputs of digital unit, and at least one indicator. The latter is connected to digital unit and made with possibility of generating signals depending on its current spatial position relative to control position, and digital unit is meant for correction of movement sensor readings as to signals supplied from indicator by using coordinates of control position, which are recorded in digital unit. In addition, safety system is equipped at least with one device installed in control position in working area of movement of crane and/or crane equipment and made in the form of active or passive transponder, or metal flag, or rack, or another metal device so that it interacts with indicator.

EFFECT: simplifying maintenance of crane with safety system, as well as enlarging application area of safety system due to control of positions not only of crane mechanisms, but also crane itself.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to lifting-and-conveying equipment, particularly to devices intended for controlling load rope tensioning. Device to measure load rope tension comprises base accommodating force pickup and lever. Lever support incorporates rolling bearing and is pivoted to aforesaid base via axle. Lever arm is articulated with load rope with the help of taper bush and interacts with force pickup. Lever arm has a stop for its face surface to come in contact with load rope. Stop face surface features bent shape with constant curvature radius equal to distance from the dace to lever support axle.

EFFECT: higher accuracy of tension measurement, faultless operation of lifting mechanism.

2 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the method of control over movement of block on drilling rig. According to the first version the method consists in determination of speed of the movable block, of position of the block within the range of displacement, of load of weight on the movable block, in comparison of speed of the movable block with maximum value of speed, notably, that maximum value of speed is determined in function of weight of load on the movable block and position of the block in the range of displacement. Also speed of the movable block is controlled so, as to maintain its speed at maximum value of speed or below it. According to the second version the method provides for determination of speed of the movable block, of position of the movable block within the range of displacement, and also weight of load on the movable block, for calculation of momentum of the movable block, for comparison of momentum of the movable block with maximum value of momentum. Also speed of the movable block is controlled so, as to maintain its momentum at maximum value of momentum or below it.

EFFECT: increased safety of rig operation.

24 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: invention is related to the field of machine building, namely, to production of cranes, and may be used for control of mobile loaded crane stability, mostly jib self-propelled cranes. Method consists in the fact that load moment is calculated and compared to permissible limit, depending on data obtained signal is generated to actuate those actuating mechanisms, which reduce load moment. Additionally speeds of pressure change in outrigger hydraulic cylinders are measured, and their sign is identified, control combinations of pressure change speeds are made, which are then compared to the reference ones, depending on match or mismatch of obtained control combinations with the reference ones, signal for control of parameters that affect stability is generated. Device comprises hydraulic line of outriggers, mechanism for boom swing, analog-to-digital transducer, board microprocessor, board microprocessor memory comprises mathematical model of mobile crane made with the possibility of change depending on type of crane. Pressure sensors are additionally included into hydraulic line of outriggers, board microprocessor has communication with pressure sensors, mechanism for boom swing is equipped with controlled axial-piston hydraulic actuator.

EFFECT: increased efficiency and higher safety level of loading-unloading works.

3 cl, 3 dwg

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

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: invention relates to self-contained hoisting machine parametre recorder. Proposed recorder comprises operating parametres, transducer, microcontroller-based digital computer and real time counter incorporated with said microcontroller or made as a separate circuitry connected to real-time counter power supply output terminals. It comprises also memory device connected to digital computer or incorporated therewith. Note that said operating parametres transducers are connected to microcontroller either directly or via extra matching device. Said microcontroller can receive and process signals of said operating parametres transducers and enter them into aforesaid memory as well as real-time-counter signals. Recorder can transmit data from said memory to external read-off device and/or display said data on monitor. It incorporates also self-contained power supply voltage control device made either independent or incorporated with aforesaid microcontroller. Digital computer can process signals coming from self-contained power supply voltage control device and record appropriate attribute of voltage drop in memory or microcontroller memory to read off said attribute by external read-off device. Supply lines of all components of proposed recorder are connected to self-contained power supply.

EFFECT: continuous recording of machine operating parametres irrespective of availability of voltage in elevator onboard circuit.

12 cl, 1 dwg

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