Cargo-hoisting machine control system (versions)

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

 

The invention relates to a lifting-transport equipment and can be used in control systems for cranes to improve their performance and fuel economy.

Known control system crane containing hydraulic or electric actuators mechanisms of movement, rotation, lifting and boom, controllers, or devices for manual control of these drives and device for controlling the supply of fuel, made in the form of pedals connected to a controller of the angular velocity of the motor [1].

This system is implemented separate control crane mechanisms crane and fuel. Accordingly, during short stops of the crane and at low load on the crane, the crane operator is not always provides a decrease in the angular speed of the engine, which leads to excessive fuel consumption.

Closest to the proposed system is a system which implements a manual control mechanisms of the crane and automatic discrete increase/decrease the fuel supply to the engine of a diesel-electric crane. In this system, the signals from the device control mechanisms of the crane is connected to the electric valves associated with the cylinders. Cylinder rods move the drive arm secured at their ends by blocks, bended flexible is ranom, associated with the movable element of the control unit of the fuel supply to the engine [2].

Automatic increase/decrease of fuel flow when enabling/disabling the drives of the crane in this system leads to increased fuel efficiency of the crane. However, this increase is not large enough, because in any mode of operation of the crane during operation of the actuator is set to the maximum value of the angular velocity of the engine.

Signal processing for increasing the fuel supply in the known system is carried out only after the formation of the control signal for the actuator of the valve. This, taking into account the inertia of the engine, resulting in reduced performance of the crane through the initial stages of operations of the lifting/moving of goods with a low angular velocity of the engine. The performance degradation also leads to increased fuel consumption when performing crane operations, lifting and moving cargo.

Delay installation of the specified (working) angular velocity of the motor when switching the drives, as well as setting the maximum value of the angular velocity when turning any drive will result in reduction facilities management faucet.

The independence of the speed of the motor from the load and the spatial position of the hauling, cargo and constructive element of the s crane, for example his arrows, in particular the distance to obstacles (when implementing coordinate protection) or to the end point of travel, reduce the safety of the crane. This is due both to the possibility of performing operations of lifting and moving loads with unreasonably high speeds and lack of automatic reduction of the speed hauling, cargo or structural elements of the crane when approaching the end point of their movement.

Technical results, seeks to achieve the proposed technical solution is the reduction of the specific fuel consumption when performing crane operations, increased productivity, convenience, control valve and safety of its operation.

In the control system of the lifting crane, containing hydraulic and/or electro-hydraulic and/or electric actuators its mechanisms, manual or automated control of these drives and device for controlling the supply of fuel to the engine valve, is connected to the control device drives and controls the actuator and a fuel supply configured to increase/decrease the engine speed when turning on/off actuators crane, these technical results dostigayutsya, this system is arranged to measure at least one parameter of operation of loading crane, characterizing the load, and/or the spatial position and/or speed of movement hauling, cargo, and/or at least one structural element of the crane, and the device drive control and a fuel supply configured to automatically change the size and/or speed of the indicated increase/decrease the engine speed, depending on the value of this parameter.

Thus, the control unit drives can be equipped with at least one arm drive control of the crane and configured to generate signals for controlling the actuators depending on the magnitude and/or direction of deviation of the operator of this handle.

In the second variant of the control system of the lifting crane, containing hydraulic and/or electro-hydraulic and/or electric actuators its mechanisms, manual or automated control of these actuators include at least one arm drive control of the crane and configured to generate signals for controlling the actuators depending on the deviation of the crane of this arm, and a device for controlling the supply of fuel jet, the engine of the crane, connected to the control device drives and controls the actuator and a fuel supply configured to increase/decrease the engine speed when turning on/off actuators crane mentioned technical result is achieved by the fact that the control device drives in this system are made with the possibility of changing the magnitude and/or speed increase/decrease the engine speed when approaching/removing or touching/removing the hand of the operator to the handle (lever) control.

When this control system may be configured to measure at least one parameter of operation of loading crane, characterizing its load, and/or the spatial position and/or speed of movement of its lifting body, cargo, and/or at least one structural element of the valve, and the control unit drives and fuel made with the possibility of changing the magnitude and/or speed of the indicated increase/decrease the engine speed, depending on the value of this parameter.

The manual or automated control of the drives in any type of control system can be performed:

in the form of the apparatus containing the handle, the sensor/detectiveagency this arm and the controller, the inputs of which are connected to the outputs of the sensor/sensors provisions of this arm and at least one sensor operating parameters of the crane, and the outputs of the controller directly or via an additional output device connected to control inputs of the actuators of crane machinery and apparatus for fuel control;

- possible changes in the magnitude and/or speed increase/decrease the engine speed when turning on/off actuators crane from the reduction in specific fuel consumption, engine crane and/or from the security of his work. This can be done by increasing/decreasing engine speed and/or speed increase/decrease this frequency when increasing/decreasing the load on the crane and/or removing/approximation hauling, cargo and/or at least one structural element of the crane to the obstacle or to the end point of its travel;

- possibility of installation of various sizes and/or speeds increase/decrease the engine speed depending on the operating mechanism of the crane and/or the direction of its movement;

- with the possibility of increasing the engine speed from minimum to a predefined intermediate values when arr is igenii the hands of the operator to the handle control or by touching the handle with a subsequent increase of this frequency after the rejection of the crane arm actuator control/drives of the crane;

- save the current values of engine speed during a pre-determined time interval after the return of the crane arm or all of the arms control actuator/actuators valve in the neutral position and/or after removal of the operator's hands with this arm/arms with the installation of the specified minimum value of the engine speed.

The implementation of these distinctive features allows you to regulate the fuel supply depending on the modes of operation of the crane and, accordingly, to ensure the operation of the engine in the regime of minimum specific fuel consumption. Simultaneously forming signals to increase the fuel supply at the start of operation of the lifting/moving of cargo at the approach or touch of the hand of the operator to the handle drive control of the crane provides proactive increase in the angular velocity of the engine. This is taking into account the inertia of the engine increases the productivity of the crane through the initial stages of operations of the lifting/moving of goods with high speed and, therefore, also leads to a reduction of specific fuel consumption.

The regulation of the angular speed of the motor depending on the load, the spatial position or the speed of lifting of the body, g is for and structural elements of the valve eliminates the ability to perform lifting operations with unacceptably large or with unreasonably low speed, and also provides automatic reduction of speed hauling, cargo or structural elements of the crane when approaching the end point of their movement. This leads to the decrease of specific fuel consumption, and to increase the ease of control valve and safety of its operation.

Therefore, these distinctive signs are in direct causal connection with the achievement of the following technical results.

Figure 1 shows a functional diagram of the control system, figure 2 - examples implemented this system time diagrams of the angular velocity of the engine.

Control system crane includes hydraulic, electro-hydraulic and/or electric actuators 1 its mechanisms 2, the device for controlling the supply of fuel 3 engine crane, manual or automated control of 4 of these drives 1 associated with the device to control the fuel supply 3, and the sensor operating parameters of the valve 5 (Fig 1).

The design of the actuators 1 different mechanisms of crane mechanisms of movement, rotation, lifting and boom, teleskopowe arrows, etc. is determined by the specific design of the lifting crane and requirements management system. As the power (output) of the elements of these drives can use is to use the power cylinders, motors, induction motors, etc. connected with the respective winches, gearboxes, brakes, clutches, etc. crane.

Device for controlling the supply of fuel 3 may be mechanical, hydraulic, pneumatic, Electromechanical, electrohydraulic or electropneumatic. A possible implementation of this device, such as an electric motor with a reducer connected to the job element angular velocity of a fully integrated controller diesel engine. It is also possible implementation in the form of Executive hydraulic cylinder connected to the rail of the fuel pump of the engine. In this case, the device for controlling the supply of fuel 3 comprises a control electrohydrodynamical connected to the control unit 4 drives 1. If necessary, the device provides feedback on the angular velocity of the engine. In this case, additionally set the angular rate sensor of the engine, which is part of the sensor parameters of the crane 5.

Among these sensors, in General, includes a sensor mass lifted and moved (strain gauge force sensor or strain gauge pressure sensor, the length of the boom (potentiometer installed in the cable drum, connecting the sections), the sensor ug is and slope arrows (for example, MEMS inclinometer accelerometer), proximity sensor to the transmission line, the angle sensor platform crane (sensor azimuth), the sensor (limit switch) limit lifting hauling and other sensors, the installation of which is determined by the specific design of the lifting crane and system requirements for the protection and management.

The sensors 5 may be referred to peripheral devices for measuring or registering the parameters of the crane, peripheral controllers, network nodes (e.g., CAN), that does not matter.

The control unit 4 drives depending on the design of the actuators 1 and requirements for the control system of the crane may be Electromechanical (e), which is most preferable, as well as mechanical, hydraulic, pneumatic, etc. It is made, in particular in the form of one or more control devices, each of which contains the handle of the control valve 6, one or more position sensors of this arm 7 and the controller 8, which is implemented on the basis of the microcontroller. The inputs of the controller 8 is connected to the outputs of the sensor (sensors) the provisions of this arm 7 and sensors operating parameters of the valve 5, and its outputs directly or via an additional output device 9 (additionally through the e power amplifiers, signal converters, pulse-width controllers and the like) are connected to control inputs of the actuators 1 mechanisms 2 cranes and devices for controlling the supply of fuel 3.

On the handle 6 can be located to the proximity sensor or a touch of the hand of the operator 10 to the arm 6, for example, a capacitive type, connected to additional inputs of the controller 8.

The control unit 4 drives may also optionally contain connected to the controller 8 controls (buttons, keys or switches)that provide the opportunity for the input of this device parameters that define the operating modes and control options, including limits on operating parameters of the crane on the safety of its operation (view of the boom system, the degree of hoist winch part of the polyspast, extension poles, the parameters of the coordinate protection and so on), as well as indicators, memory blocks Registrar settings etc.

The connection between the controller 8 and the sensor operating parameters of the valve 5, the output device 9 and, if necessary, connection between a controller 8 that are members of different control devices, may be implemented using individual wires, using multiplex communication channel, and, in justified cases, using a radio channel (for example, when connecting remotely the sensors 5).

The control system operates as follows.

Before working at the crane, the crane operator using controls located on the control unit 4 drives (1 is conventionally not shown), provides input to the controller 8 of parameters that define the operation modes of the actuator and valve in General (parameters limits the working area of the crane on coordinate protection, the position of sliding bearings, pistons Spasovka of the polyspast, availability, length, and angle of inclination of the jib etc), if for a given valve design input these parameters is necessary. The entered parameters are saved in non-volatile memory of the controller 8 (for example, in the EEPROM of its microcontroller).

Optimal from the point of view of the minimum specific fuel consumption and/or secure operation of the crane dependence of the angular speed of the motor parameters and modes of operation of the crane, including the parameters entered by the operator, and parameters characterizing the load, the spatial position and/or speed of movement hauling, cargo and/or structural elements of the crane, predefined in the design of management system, written in memory of the controller 8. This relationship is stored in the form of formulas or tables and is used in the program operation of the controller 8.

At the same time in memory to the key 8, if necessary, store fixed values of angular velocities of the engine, including the minimum idling speed, the maximum possible motor speed, intermediate speed values of the engine for various actuators 1 and different directions of their movement, are chosen from a condition achieve a reasonable compromise between fuel consumption and the time it takes the motor to the maximum or installed capacity, etc.

In addition, in the memory of the controller 8 may be stored preset optimal (from the point of view of the specific fuel consumption or the safety of the crane) values of the velocity increase/decrease (speed changes) the angular velocity of the engine for various actuators 1 and for various parameters and modes of operation of the crane.

Management of a crane (drive 1) is carried out by the operator by moving the arm (arms) 6 device drive control 4.

Before performing the operations of lifting and moving cargo this lever is in the neutral position, and the actuator 1 is in the off state. The mechanisms of the crane 2 is fixed, and the controller 8 generates the control signal supply device 3 fuel corresponding to the minimum idle speed of the engine ωabout(figure 2).

If this arm 6 which holds the sensor 10 of the approach or touch of the operator to the handle, in the case of proximity or touch of a hand of the operator to the handle 6, the controller 8 sets the control signal supply device 3 fuel corresponding to the intermediate value of the idle speed of the engine ωwith(figure 2, curve A). Thus, even if the arm 6 remains in the neutral position occurs early increase in the angular velocity of the engine. Due to this, after the rejection of the arm 6 from the neutral position at time t1 (figure 2, curve A), the angular speed of the engine increases to operating (nominal) value not with idle speed ωaboutand with intermediate values ωwith. Due to this, reduce the time of output of the engine in its operating mode. Consequently, this increases the performance of the valve and reduces the specific fuel consumption.

The direction and amount of deviation of crane control arm 6 is controlled by the position sensors 7 of this arm. In accordance with their output signals to the controller 8, working on the program stored in its memory, generates control signals for the actuators 1, providing the moving mechanisms of the crane 2 in the desired direction and with the desired speed. Both sensors operating parameters of the crane 5 is carried out measurements of the load of the crane and position it lifting (strelovogo the equipment), including approaching the boundaries of the working area on the coordinate protection and proximity to power lines. The microcontroller of the controller 8, and after receiving information from sensors 5 adjusts the values of the control signals drive 1, ensuring the safe operation of the crane. This correction is, in particular, in comparing the current load of the crane and options positions its lifting (boom) equipment stored in the memory of the controller 8 valid values for these parameters, and to limit the control signals of the actuator 1 from the condition of preventing the excess of these valid values.

Simultaneously, the controller 8 based on the modes and parameters of the crane and the control actions of the crane operator, controlled by the sensors 5 and 7, generates the control signal by the control device of the fuel supply 3, automatically setting the value of the angular speed of the engine corresponding to the minimum specific fuel consumption or maximum security currently run time operation of the lifting and moving of goods (in particular, depending on the mode of operation of the management system defined by the operator using the controls included in the control device 4 drives). The optimal value of this angular velocity, in General, depends on the rate of change of the parameter is in the crane work, controlled by sensors 5.

In particular, the controller 8 provides the increase/decrease of the angular velocity (rotational speed) of the engine to increase/decrease the load on the crane and/or removing/approximation hauling, cargo or any structural element of the crane to the obstacle or to the end point of its travel. This improves performance of the valve and reducing the speed of its mechanisms in their approach to the end point of movement - to the border of the working area of the crane on coordinate protection or to get closer to the power lines. In the end achieved a decrease in specific fuel consumption and improve safety of the crane.

If necessary, the controller 8 sets the optimal value of not only the magnitude but also the speed increase/decrease the angular velocity of the motor in the dynamic modes of operation of the valve (figure 2, curves b and C).

The optimal values of and speed changes of the engine speed in the General case depend on the working mechanism of the crane and the direction of its travel. These values are stored in a memory of the controller 8 and used them when the control signal forming device controlling the supply of fuel 3.

After the execution of any operation of lifting and moving cargo crane the user moves the handle 6 in the neutral position. Thus to avoid unnecessary short-term decrease in the angular speed of the engine controller 8 may be implemented by saving the current values of engine speed during a pre-determined time interval. In this case, set the minimum value of the engine speed is not since the return of the crane arm drive control valve in the neutral position or removing the operator's hands with this arm, and after the expiration of the specified interval time of timer included in the controller 8. The presence of such a time interval provides increased productivity of the crane by eliminating unnecessary decrease in the angular speed of the engine during short breaks at work drives 1.

Depending on the types and number of sensors 5 operation parameters of the crane used in the control system, and design features of this valve may be several ways to implement the described system, characterized by different combinations of alternative characteristics described in the claims.

In particular, the actuator 1 of the mechanisms of the crane 2 may be hydraulic (manual), or electro-hydraulic, or electric (electro-mechanical). Forex is also used in the same system at the same time different types of actuators 1, in any combination. For example, the lifting drive shafts may be hydraulic - using the power cylinder and actuator cargo winch electro-hydraulic proportional (to ensure a smooth lifting/lowering).

On diesel-electric crane most of the actuators 1 can be electric (Electromechanical) based on asynchronous motors with gearboxes. But if you drive any mechanism of the crane 2 is more convenient to use, for example, electro-hydraulic actuator, the valve installed hydraulic power unit and the corresponding electro-hydraulic drive elements 1.

It is obvious that the optimization types of actuators does not contradict, but only contributes to the achievement of higher technical result of the invention: reduces the specific fuel consumption, increased productivity, convenience, control valve and safety of its operation.

The system can be used one of the sensors operating parameters of the crane 5 for measuring the load, or the spatial position of the lifting body (cargo), or speed of this lifting body (cargo), or the spatial position of any structural element of a valve or the speed of movement of this element. Accordingly, the controller 8 in the manner described above implements protection is the crane with the use of this parameter.

Increasing the number of sensors 5, the controller 8 has the opportunity to control the operation of the crane and, accordingly, to provide more effective protection from overload and damage. It is obvious that the main technical result of the invention is the reduction of specific fuel consumption is achieved with any combination of sensors used.

Optimization of not only the engine speed, but the speed increase/decrease this frequency in different modes of operation of the valve, provides a more significant increase in its fuel economy. This also contributes to the influence of the load on the crane and the distance that you must move the cargo. Therefore, when the regulation of the fuel supply it is advisable to use multi-parameter optimization, to the extent possible based on their specific set present in the system sensors 5 and capabilities of the controller 8.

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

Literature

1. Nevzorov L.A. design and operation of cranes. - M.: Publishing House. center "Aka the Accademia", 2002. - S.

2. SU 1402561 A1, B66C 23/88, B60K 28/08, 15.06.1988.

1. Control system crane containing hydraulic and/or electro-hydraulic and/or electric actuators its mechanisms, manual or automated control of these drives and device for controlling the supply of fuel to the engine valve, is connected to the control device drives, and these devices drive control and a fuel supply configured to increase/decrease the engine speed when turning on/off actuators crane, characterized in that it is arranged to measure at least one parameter of operation of loading crane, characterizing the load, and/or the spatial position and/or speed moving hauling and/or cargo, and the control unit drives and fuel made with the possibility of changing the magnitude and/or speed of the indicated increase/decrease the engine speed, depending on the value of this parameter.

2. The system according to claim 1, characterized in that the control device drives equipped with at least one arm drive control of the crane and configured to generate signals for controlling the actuators depending on the magnitude and/or direction of atlanticregion this handle.

3. The system according to claim 2, characterized in that the control device drives made in the form of the apparatus containing the handle, the sensor/sensors provisions of this arm and the controller, the inputs of which are connected to the outputs of the sensor/sensors provisions of this arm and at least one sensor operating parameters of the crane, and the outputs of the controller directly or via an additional output device connected to control inputs of the actuators of crane machinery and apparatus for fuel control.

4. The system according to claim 1, characterized in that the control device drives made with the possibility of changing the magnitude and/or speed increase/decrease the engine speed when turning on/off actuators crane from the reduction in specific fuel consumption, engine crane and/or conditions of security its working.

5. The system according to claim 4, characterized in that the control device actuator configured to increase/decrease the engine speed and/or speed increase/decrease this frequency when increasing/decreasing the load on the crane and/or removing/approximation hauling, cargo and/or at least one structural element of the crane to the obstacle or to the end point of its travel.

6. The system according to claim 1, characterized in that the control device drives made with the possibility of changing the magnitude and/or speed increase/decrease the engine speed depending on the operating mechanism of the crane and/or the direction of its movement.

7. System according to one of claims 1 to 6, characterized in that the control device drives made with the possibility of changing the magnitude and/or speed increase/decrease the engine speed when approaching/removing or touching/removing the hand of the operator to the handle (lever) control.

8. The system according to claim 7, characterized in that the control device drives made with the possibility of increasing the engine speed from minimum to a predefined intermediate values when approaching the hand of the operator, at least one control handle or touch at least one control arm, with a subsequent increase of this frequency after the rejection of the operator of this arm actuator control/actuators crane.

9. The system according to claim 7, characterized in that the control device drives are designed to save the current values of engine speed during a pre-determined time interval after the return operator guiding the TCI or all of the arms control actuator/actuators valve in the neutral position and/or after removal of the operator's hands with this arm/arms, with the installation of the specified minimum value of the engine speed.

10. Control system crane containing hydraulic and/or electro-hydraulic and/or electric actuators its mechanisms, manual or automated control of these actuators include at least one arm drive control of the crane and configured to generate signals for controlling the actuators depending on the deviation of the crane of this arm, and a device for controlling the supply of fuel to the engine valve, is connected to the control device drives the lifting mechanisms of the crane, and the said device drive control and a fuel supply configured to increase/decrease the engine speed when turning on/off actuators crane, different the fact that the control device drives made with the possibility of changing the magnitude and/or speed increase/decrease the engine speed when approaching/removing or touching/removing the hand of the operator to the handle (lever) control.

11. The system of claim 10, wherein the control device drives made with the possibility of increasing the engine speed from minimum to a predefined PR the intermediate values at the approach of a hand of the operator to the handle control or by touching the handle, with further increase this frequency after the rejection of the crane arm actuator control/actuators crane.

12. The system of claim 10, wherein the control device drives are designed to save the current values of engine speed during a pre-determined time interval after the return of the crane arm or arms control actuator/actuators valve in the neutral position and/or after removal of the operator's hands with this arm/arms, and then installing the specified minimum value of the engine speed.

13. The system of claim 10, wherein the control device drives made in the form of the apparatus containing the handle, the sensor/sensors provisions of this arm and the controller, the inputs of which are connected to the outputs of the sensor/sensors provisions of this arm and at least one sensor operating parameters of the crane, and the outputs of the controller directly or via an additional output device connected to control inputs of the actuators of crane machinery and apparatus for fuel control.

14. The system of claim 10, wherein the control device drives made with the possibility of changing the magnitude and/or speed increase/decrease speed engines the El on/off actuators crane from the reduction in specific fuel consumption, engine crane and/or conditions of security its working.

15. System 14, characterized in that the control device actuator configured to increase/decrease the engine speed and/or speed increase/decrease this frequency when increasing/decreasing the load on the crane and/or removing/approximation hauling, cargo and/or at least one structural element of the crane to the obstacle or to the end point of its travel.

16. The system of claim 10, characterized in that it is arranged to measure at least one parameter of operation of loading crane, characterizing its load, and/or the spatial position and/or speed of movement of its lifting body, cargo and/or at least one structural element of the valve, and the control unit drives and fuel made with the possibility of changing the magnitude and/or speed of the indicated increase/decrease the engine speed, depending on the value of this parameter.

17. System according to one of p-16, characterized in that the control device drives made with the possibility of changing the magnitude and/or speed increase/decrease the engine speed depending on the operating mechanism of the crane and/or the direction of its movement.



 

Same patents:

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: 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: 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: 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: 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

Up!