Hydraulic system control procedure

FIELD: machine building.

SUBSTANCE: invention relates to operation of working machine hydraulic system. Proposed method comprises the steps that follow. Equipment configuration is retained at definite orientation to measure first pressure in hydraulic drive chamber (56, 58) connected with equipment at preset position. First signal is compared with first pressure magnitude. First functional relationship (71) is selected from multiple memorised functional relationship if said first signal is higher than first pressure magnitude. Second functional relationship is selected from multiple memorised functional relationships if said first signal is lower than first pressure magnitude. Hydraulic drive is controlled on the basis of selected functional relationship. Note here that each of multiple memorised functional relationships is associated with different category of equipment configuration.

EFFECT: possibility to modify relationship between hydraulic drive speed.

9 cl, 3 dwg

 

The invention in General relates to a system for controlling a hydraulic system, and more particularly to a method and apparatus for controlling a hydraulic system.

Machines, such as excavators, loaders, bulldozers and other types of heavy vehicles, usually have a large number of hydraulically operated devices (such as, for example, bucket, grapple, or hammer), selectively fastened on the machine. Hydraulic system, control instruments, usually contain a lot of hydraulic actuators (for example, nodes of type piston-cylinder and/or hydraulic motors)that work together with the connection system to ensure traffic and operations tool. Movements of the hydraulic actuators is controlled by using various input devices of the operator, such as one or more control levers, foot pedals, switches or joysticks.

In addition to selectively dockable tools connection system can also be replaced. Types of instruments and system connections, mounted on the car, as well as the connectors that secure the tools on the machine, often have different shape, size, weight, and/or other properties. Various combinations of instruments and systems connection (i.e. different hardware configuration) can influence driven by the e-motion machines and different ways to respond to commands, entered by the operator. For example, relatively heavy tool and/or relatively long connection system can be set relatively larger moment of force caused by the hardware configuration around the car, compared to the relatively easy tool and/or a shorter connection system.

One way to improve traffic management tools described in US patent No. 5784945 (Krone and others) In the above patent describes a device for determining the conversion curve of the valve in the liquid system. Liquid system comprises a liquid actuator with valve made with the possibility to initiate movement of the load. The system in accordance with the patent defines the desired velocity of the fluid actuator based on the measured load or position of the fluid actuator and generates a curve conversion valve to achieve the desired speed.

Although the system in accordance with US patent No. 5784945 can improve the management of the movement of the fluid actuator for different loads associated with the drive system in accordance with the patent does not provide the flexibility to control the various hardware configurations through the same machine. For example, one configuration of the equipment can function not desirable in a given relationship position/load/SC the grow command input device in comparison with a different hardware configuration, which can be fixed on the same machine. In addition, the system in accordance with the patent may not provide the possibility of modifying the relationship of the speed of the fluid actuator or her choice on the basis of different tools and connection configurations.

Disclosed method and apparatus is directed to overcoming one or more of the disadvantages mentioned above or other disadvantages of the prior art.

One aspect of the present invention relates to a method of operation of the hydraulic system. The method includes holding the hardware configuration in a specific orientation. The method also includes measuring the pressure in the chamber of the hydraulic actuator associated with the configuration of the equipment when the equipment is in a particular orientation, and comparing the first signal representing the first measured pressure, the first pressure value. The method further includes selecting the first functional relationships among the set of stored functional relationships, if the first signal is greater than the first pressure value, and selecting the second functional relationships among the set of stored functional relationships, if the first signal is less than the first pressure value. The method includes the hydraulic actuator on the basis of you is an early functional relationships.

Another aspect of the present invention relates to a method of operation of the hydraulic system. The method includes moving the hardware configuration of a specific movement. The method also includes detecting the pressure in the chamber of the hydraulic actuator associated with the hardware configuration when the configuration of the equipment move, using a certain movement, and comparing the first signal representing the first measured pressure, the first pressure value. The method further includes selecting the first functional relationships among the set of stored functional relationships, if the first signal is greater than the first pressure value, and selecting the second functional relationships among the set of stored functional relationships, if the first signal is less than the first pressure value. The method includes the hydraulic actuator based on the selected functional relationships.

Another aspect of the present invention relates to a machine having a hydraulic system, including the hardware configuration with the tool and the connection system. The hydraulic system also includes a hydraulic actuator that affects the movement of the component hardware configuration. The hydraulic actuator includes a first camera and a second camera. Hydraulic the Kai system also includes a sensor, which measures the pressure in the first or second chambers, while the hardware configuration of the first control method. The controller compares the first signal indicating the measured pressure to the first pressure value. The controller also selects the first functional relationship among the set of stored functional relationships, if the first signal is greater than the first pressure value, and selects the second functional relationship among the set of stored functional relationships, if the first signal is less than the first pressure value. The controller controls the hydraulic actuator to the second method, based on the selected functional relationships.

The present invention is illustrated by drawings, which presents the following:

figure 1 - machine, according to the invention, schematically; 2 - hydraulic system schematically, for the machine of figure 1; figure 3 - block diagram of the operational sequence of the method of operation of the hydraulic system of figure 2.

Figure 1 illustrates an example of the machine 10. Machine 10 may be stationary or mobile machine that performs some type of operation associated with an industry such as mining, construction, agriculture, transport or any other industry known in the art. For example, Masha is and 10 may be an earth moving machine, such as excavator, bulldozer, forklift, or any other known machine. Machine 10 may include a system 12 of the connection, the tool 14, which may be attached to the system 12 connection using a connector (not shown), one or more hydraulic actuators 30A-C are mutually connecting the system 12 of the connection, and the interface 16 of the operator.

12 system connections can contain any structural module, which supports the movement of the machine 10 and/or tool 14. 12 system connections contains, for example, a frame 11, a shaft 13 and the lever 15. The boom 13 is connected with the possibility of rotation on the frame 11, and the lever 15 is connected to rotate with the shaft 13 in the articulation 17. The tool 14 is connected to rotate with the lever 15 in the articulation 19. It is envisaged that the system 12 connection may, alternatively, be of a different configuration and/or more connection elements than are presented in figure 1.

The tool 14 is fixed to the lever 15 through a connector (not shown), and can be managed through the interface 16 of the operator. The tool 14 includes any device used to perform a specific task, such as, for example, equipment-bucket, grapple, fork seizure, or performing any other task device known in the art. The tool 14 may be made with the possibility regards the PTA, rotate, slide, swing, lift, or move relative to the device 10 by any known in the art. Note that many different types of instrument can be secured to the lever 15. The combination of the connection system 12 and tool 14 may embody the hardware configuration. Different hardware configurations can be, in General, divided into categories such as mild, moderate, severe, or components of hardware configurations, can be, in General, divided into categories, such as light/medium/heavy tool, light/medium/heavy arm,

light/medium/heavy arrow.

The operator interface 16 may be configured to receive input commands from the operator, indicating the desired movement of the tool. In particular, the operator interface 16 may include a device 22 operator interface, such as, for example, a multi-axis joystick located on one side of the operator station. The device 22 operator interface represents the proportional controller type is made with the possibility of forming a signal about the position of the device interface indicating the desired movement of the tool 14.

Hydraulic actuators 30A-C can be connected to the frame 11, the arrow 13, the lever 15 and/or the tool 14. For example, as shown is figure 1, the hydraulic actuator 30A may be connected to the tool 14 and the lever 15, the hydraulic actuator 30b may be connected to the lever 15 and the shaft 13, and the hydraulic actuator 30 C may be connected to the frame 11 and shaft 13. Hydraulic actuators 30A-C may be nominated and contract, providing the movement of the components of the machine 10 with which they are connected. Note that the hydraulic actuators 30 a-C may be connected in various configurations and that the machine 10 includes any number of hydraulic actuators.

As shown in figure 2, the machine 10 includes a hydraulic system 24 having many components that interact to move the connection system 12 and tool 14. In particular, the hydraulic system 24 includes a reservoir 26 containing a supply of fluid, and a pump 28 that directs fluid under pressure to the hydraulic actuator 30b. While in figure 1, with the purpose of simplicity, presents three drive designated as 30A, 30b and 30C, hydraulic diagram in figure 2 presents only one hydraulic actuator 30b. Description of hydraulic system 24 and, in particular, the hydraulic actuator 30b equally applicable to hydraulic actuators 30A, 30b. Hydraulic actuators 30A and 30C may be included in the hydraulic system 24 or the hydraulic system similar to the hydraulic system 24.

the hydraulic actuator 30b may include a pipe 52 and the node 54 of the piston, located inside the pipe 52. One pipe 52 and the node 54 of the piston can be pivotally connected between the boom 13 and the lever 15. The hydraulic actuator 30b contains the first chamber 56 and second chamber 58, separated by a piston 60 having a shaft 62 of the piston. In the first and second chambers 56, 58 may be selectively filed fluid under pressure from pump 28, and the fluid may be selectively released, allowing for the displacement of node 54 of the piston inside the tube 52, thus altering the effective length of hydraulic actuator 30b. The spread and contraction of the hydraulic actuator 30b may be a feature that helps to move the arrow 13, the lever 15 and the tool 14. Hydraulic system 24 may include sensors 40, 42 of the pressure-side piston and the rod side, which can be communicated in fluid with the first and second chambers 56, 58, respectively, and can be configured to generate a signal indicating the fluid pressure within first and second chambers 56, 58. The sensors 40, 42 of the pressure-side piston and the rod side may contain a pressure sensor of any type known in the art. It is envisaged that other hydraulic actuators, in addition to the cylinder with the liquid, can, alternatively, be embodied in a hydraulic system 24, such as, for example, the hydraulic the ski motors and/or hydraulic drive any other type, known in this technical field.

Hydraulic system 24 contains the layout of valves, having one or more valves, containing valve 32, the feed side of the piston, the exhaust valve 34 on the side of the piston, the valve 36 feed on the rod side, and the exhaust valve 38 on the rod side. The valve 32 supply-side piston is located between the pump 28 and the first chamber 56, and the valve 36 feed on the rod side can be located between the pump 28 and the second chamber 58. The exhaust valve 34 on the side of the piston may be located between the first chamber 56 and the reservoir 26, and the exhaust valve 38 on the rod side can be located between the second chamber 58 and the reservoir 26. The valves 32, 36 supply-side piston and the rod side can be connected in parallel with a common feed channel 68 that extends from the pump 28. Exhaust valves 34, 38 on the side of the piston and the rod side can be connected in parallel with a common outlet channel 70, which leads to the reservoir 26. The supply valves and the exhaust valves 32, 34, 36 and 38 on the side of the piston and the rod side can be configured to regulate fluid flow to and from the first and second chambers 56 and 58, in response to a speed command from the controller 48. The supply valves and the exhaust valves 32, 34, 36 and 38 on the side of the piston and the rod m is able to move to any position between fully open and fully closed positions for varying the speed of the flow in and/or from the first and second chambers 56 and 58, affecting, thus, on movement of the hydraulic actuator 30b and, thus, the boom 13, the lever 15 and/or tool 14. Hydraulic system 24 may be of any composition and/or the number of valves to allow movement of the hydraulic actuator 30b. Also provides that the hydraulic system 24 may further be of any composition and/or valves to influence the movement of hydraulic actuators 30A and 30C, if the hydraulic actuators 30A and 30b included in the hydraulic system 24.

Hydraulic system 24 may include a controller 48 which is connected with the liquid components of the hydraulic system 24, and the device 22 operator interface. The controller 48 may embody a single microprocessor or multiple microprocessors that control hydraulic system 24. The controller 48 may communicate with the supply valves and exhaust valves 32, 34, 36, 38 on the side of the piston and the rod side through lines 80, 82, 84, 86 of the transmission, respectively, with the device 22 operator interface through the line 88 transmission and sensors 40, 42 of the pressure-side piston and the rod side through lines 90 and 92 of the transmission, respectively. The controller 48 may be directly embodied in a General microprocessor of the machine, which is arranged to control various machine functions. The controller 48 mo is et to contain the storage device, the secondary device drive, processor, and any other components that are configured to run the application. Various other circuits may be associated with controller 48, such as power supply, the circuit of the signal processing, the control circuit of the solenoid and circuits of other types.

One or more functional relationships 71 may be stored in a storage device controller 48. The functional relationship 71 functionally map the input command from the operator and the operating parameters corresponding to the first and/or second chambers of the hydraulic actuator 30b, and hydraulic actuators 30A and 30C, which correspond to the categories on the hardware configuration. The functional relationship 71 can be represented in the form of maps, tables, graphics, equations, and/or any other functional relationships known in the art. As described in detail below, the pressure in the first and/or second chambers of the hydraulic actuators 30A-C may indicate which category the configuration of equipment attached to the car 10. Alternatively, the pressure in the first and/or second chambers of one of the hydraulic actuators 30A-C may indicate which category the individual component configuration of the equipment mounted on the machine 10.

The functional relationship 71 may bespecial data denoting various operating parameters of the machine 10. In particular, functional relationships 71 can provide the operating parameters for General category hardware configuration, mounted on the machine 10, or for categories of individual components hardware configuration, mounted on the machine 10. Operating parameters, providing functional relationships 71 may be an installation position of the valve, which establish one or more of the following in respect of hydraulic actuators 30A-C: pressure setting for the first and/or second chambers (for example, installation of back pressure), the travel range (e.g., drive), team regenerating, limits the magnitude of the force curve modulation of the strength curve of the modulation rate and/or set the maximum speed (e.g., fast, normal, slow). For example, for relatively heavier hardware configuration can contain a curve modulation speed with a reduced maximum speed for improved control relatively heavy tool. In addition, the configuration of the relatively heavy equipment can operate more predictable within a certain range of movement of the tool 14 and/or below the maximum speed of the tool 14. In addition, the configuration relative to t the heavy equipment may include the installation of valve position to achieve the increased back pressure, which can reduce the excess load conditions caused by heavy equipment.

Operating parameters can be determined during laboratory and/or field tests of machine 10 and/or by mathematical modeling and can be periodically recalibrated and updated. Also provides that the operator can experiment with different operating parameters and categories of hardware configurations to determine which operating parameters correspond to categories of hardware configurations.

During operation of hydraulic actuators 30A-C (1) operate under the pressure of the fluid in accordance with an input command from the operator. Figure 3 illustrates the block diagram of the sequence of operations, representing an approximate method 93 calibration of the hydraulic system, for example the hydraulic system 24, is arranged to effect the movement of one or more hydraulic actuators, such as hydraulic actuators 30A-C. At step 94 the components of the hardware configuration can be assembled and mounted on the machine 10. At step 96, the hardware configuration can be oriented. At step 98, the fluid pressure can be determined in one or both of the respective chambers of the hydraulic actuators 30A-C. At step 100, the controller 48 may select functional the second relationship, corresponding to the measured pressure, the functional relationships 71. At step 102 hydraulic system, control of hydraulic actuators 30A-C can be controlled based on the selected functional relationships or relationships. When a new tool and/or connection system replace, steps 94, 96, 98, 100 and 102 may be repeated. Steps 94, 96, 98, 100 and 102 will be described in more detail below.

At step 94 the components of the hardware configuration can be assembled and mounted on the machine 10. For example, the components can be configured, as shown in figure 1, on which the boom 13 is attached to the chassis 11, the lever 15 mounted on the bolt 13, and the tool 14 mounted on the lever 15. At step 96, the hardware configuration may have the orientation used for calibration of the control system for different hardware configurations. Examples of orientation include pulling the connection system 12 and tool 14 vertically or horizontally. The operator can use the interface 16 of the operator to move the connection system 12 and tool 14 up until 12 system connection and the tool 14 will not be stretched vertically or horizontally. When different configurations of equipment kept in the same orientation (for example, an elongated vertically), the fluid pressure in the first and second chambers of the hydraulic actuator is in 30A-C may vary, depending on the hardware configuration, mounted on the machine 10. For example, when comparing two levers of different sizes held in the same orientation, relative to the more severe the lever can exert a large force to the hydraulic actuators 30A-C. Such a large force may correspond to a relatively higher pressure fluid in one or both of the respective chambers of the hydraulic actuators 30A-C, affecting their movement. In line with this, the measured pressure in the hydraulic actuators 30A-C, when the lever 15 is supported in a specific orientation, may denote the category type of the lever 15, such as heavy, medium, light, mounted on the machine 10. This is provided that the hardware configuration can be, in General, divided into categories such as mild, moderate, severe, or components of hardware configurations can be individually divided into categories, such as light, medium, heavy instrument; light, medium, heavy arm; light, medium, heavy arrow.

Stage 96 may additionally or alternatively include movement of equipment through the motion with constant velocity. When different hardware configuration move with the same movement, the fluid pressure in one or both of the respective chambers of hydraulic is such actuators 30A-C may vary depending on hardware configuration, mounted on the machine 10. For example, when comparing two levers of different sizes, raised in the same movement, relatively heavier lever can exert great efforts to hydraulic actuators 30A-C. accordingly, the pressure measured in the first chamber of the hydraulic actuators 30A-C, when the lever 15 is moved by performing a certain movement can designate a category type, such as heavy, medium, light, lever 15 mounted on the machine 10.

At step 98, the fluid pressure can be determined in one or both of the respective chambers of the hydraulic actuators 30A-C. fluid Pressure can be determined by one or both pressure sensors on the side of the piston and the rod side associated with hydraulic actuators 30A-C. As described above, when the equipment is held in a specific orientation or moves in a certain movement, the measured pressure of the fluid in the first and/or second chambers of the hydraulic actuators 30A-C may denote the category hardware configuration, mounted on the machine 10.

At step 100, the controller 48 may select the functional relationship of the functional relationships 71 stored in the storage device controller 48, which corresponds to the measured pressure. Functional relationships 71 are many function of the national Association each of which corresponds to a General category of hardware configuration and a specific value of pressure or pressure range for this category. The controller 48 may select one or more functional relationships 71, and each of the selected functional relationship corresponds to a particular category and the value of pressure or range of pressures. The controller 48 may select a functional relationship by comparing the signal representing the measured pressure in the first and/or second chambers of the hydraulic actuators 30A-C, with a value of pressure. For example, controller 48 may select the first functional relationship 71, if the signal is greater than the pressure value, or the controller 48 may select a second functional relationship 71, if the signal is less than the pressure value. In another example, controller 48 may compare the signal representing the measured pressure with a first pressure range associated with the first functional relationship 71 and the second pressure range associated with the second functional relationship 71. The controller 48 may select the first functional relationship, if the signal is within a first pressure range, and the controller 48 may select a second functional relationship, if the signal is within the second di the range of pressures. The controller 48 may determine the strength associated with hydraulic actuators 30A-C, based on the measured pressure by any method known in the art. Step 100 involves selecting functional relationships 71 corresponding to a certain power, by comparing the signal indicating the calculated force value of the force.

In another embodiment, the functional relationships 71 include many functional relationships, each of which corresponds to a specific component category hardware configuration and a specific value of pressure or pressure range for this category of components. The controller 48 may select one or more functional relationships 71, and each of the selected functional relationship corresponds to a specific component category hardware configuration and the value of the pressure or pressure range for this category. Functional relationships 71 can be chosen in such a way as described above in relation to the choice of functional relationships for hardware configuration. At this stage 100 may be performed so as to select one or more functional relationships that match the specific hardware configuration, mounted on the machine 10, such as a specific configuration of the boom, arm and/or tool. It is envisaged that the selected functional relationship or functional dependencies may correspond to a category, such as heavy, medium, light, hardware configuration or category specific components mounted on the machine 10.

It is envisaged that the stage 100 may contain instead of selecting functional relationships modification of functional relationships to account for the measured pressure. Thus, if the signal representing the measured pressure is greater than or less than a certain value, the operating parameters provided by one or more functional relationship 71 may include a basic set of operating parameters that change as a function of the signal. For example, a basic set of operating parameters can be individually weighted for different categories of hardware configurations.

At step 102 hydraulic system, control of hydraulic actuators 30A-C, control based on the selected functional relationship or Association 71. In other words, the operating parameters of the hydraulic system can be adjusted to match the selected functional relationships 71. The controller 48 may receive input commands indicating a desired movement of the tool from the device 22 operator interface. Counter is ller 48 may be defined through one or more selected or modified functional relationship 71 one or more commands the valve to perform the desired movement of the hydraulic actuators 30A-C. As a result, the movement of hydraulic actuators 30A-C may essentially correspond to the expected or desired by the operator speed, regardless of the type of hardware configuration, mounted on the machine 10.

The above-described hydraulic control system may be applicable to any machine that includes a hydraulic actuator, and can provide superior maneuverability in different hardware configurations. Operation of hydraulic system 24 and, in particular, the calibration of the machine 10 will be explained below with reference to a specific example. Note that the following explanation is presented only to clarify.

In one example of the hardware configuration shown in figure 1, may be replaced with a new hardware configuration. The boom 13 may be replaced by a relatively long boom, and the tool 14, which is shown as a bucket in figure 1, may be replaced by a grapple. In the example of the arrow 13, the lever 15 and the tool 14 can be removed from the machine 10, and a new arrow, the lever 15 and the grip can be assembled and mounted on the machine 10 (step 94). Because the machine 10 may have been previously calibrated to work with the hardware configuration shown in figure 1, the machine 10 may be calibrated to work with the new hardware configuration. Accordingly, after the new parameters, then the equipment will be mounted on the machine 10, the operator can use the interface 16 of the operator to move the gripper in a certain orientation in which it is stretched vertically, thus placing the hardware in a specific orientation (step 96). One or both of the pressure sensor on the side of the piston and the piston rod associated with each hydraulic actuator 30A-C, define the pressure chambers of each hydraulic actuator 30A, while the grip is stretched vertically (step 98). The controller 48 may receive a signal indicating a certain pressure in the chambers of the hydraulic actuators 30A-C.

The controller 48 may compare the signal with a value of pressure or with pressure ranges associated with functional interconnections 71 (step 100). Assuming that the grip, the lever 15 and the new boom set the configuration average of the tool, light lever, heavy arrows, the controller 48 may select one of the functional relationship 71 corresponding to the pressures or pressure ranges associated with secondary tool, easy lever and a heavy arrow. Provided that the controller 48, as an alternative, you may choose many functional relationships 71, and each of the selected functional relationship 71 corresponds to at least one value of the pressure or range is in pressure associated with secondary tool, easy lever and a heavy arrow.

The selected functional relationship may provide the operating parameters, such as maximum speed for each component hardware configuration. The controller 48 may consider the selected functional relationship and to adjust operating parameters relating to the seizure, the lever 15 and a relatively long arm, so that they match the selected functional relationships or interconnections 71 (step 102). During subsequent operations, for example, can be prevented from exceeding the maximum speed grip, lever 15 and a relatively long boom associated with each of them, in accordance with the selected functional relationship or relationships 71.

By calibration of the machine 10 based on the measured pressures in the first and second cameras associated with the hydraulic actuators 30A-C, the different categories of hardware configurations can be used with predictable mobility. Because the operating parameters can be set for different categories of hardware configurations without knowledge of the identity or properties of the tool 14 and the connection system 12, the different categories of hardware configurations, including the identified tools and system connection can be closed is destroyed by the machine 10 and can work with predictable speed and control.

To a person skilled in the art will understand that various modifications and variations can be made to the described hydraulic system. Other variations will be obvious to those skilled in the art given the description and practices described hydraulic system. The description and examples should be considered only as examples, the true scope is defined by the claims and its equivalents.

1. A method of operating a hydraulic system (24)where:
hold the hardware configuration in a predetermined position;
measure a first pressure, at least one chamber (56, 58), at least one hydraulic actuator connected to the equipment while the equipment is in a predetermined position;
compare the first signal representing the first measured pressure, the first pressure value;
choose the first functional relationship (71), among many stored functional relationships, if the first signal is greater than the first pressure value;
choose the second functional relationship among the set of stored functional relationships, if the first signal is less than the first pressure value; and
control the hydraulic actuator based on the selected functional relationship, and each is left out of many stored functional relationships associated with different category of hardware configurations.

2. The method according to claim 1, wherein comparing the first signal with the first pressure value includes comparing the first signal with a first range of pressure values associated with the first functional relationship and the second range of pressure values associated with the second functional relationship.

3. The method according to claim 2, in which choose the first functional relationship, if the first signal is within a first range of pressure values, and choose the second functional relationship, if the first signal is within the second range of pressure values.

4. The method according to claim 1, wherein the hardware configuration consists of many components and each of the stored functional relationships associated with different category of components.

5. The method according to claim 1, wherein each of the multiple stored functional relationships functional correlates the incoming operator commands and operating parameters, the corresponding hydraulic actuator.

6. The method according to claim 5, in which by means of the operating parameters define the installation of the pressure chamber of the hydraulic actuator.

7. The method according to claim 5, in which the operating parameters set the maximum speed for the hardware component.

8. The method according to claim 1, in which:
measuring a second pressure at the ore, in one chamber of the second hydraulic actuator connected to the equipment; and
compare the second signal representing the second pressure, the second pressure value.

9. Machine with hydraulic system (24)that contains:
hardware configuration, including the tool (24) and the system (12) of the connection;
hydraulic actuators 30a-c), intended for the propulsion of a hardware component, and the hydraulic actuator includes a first chamber (56) and second chamber (58);
the sensor (40, 42) for measuring the pressure at least in one chamber, while the hardware configuration control; and
the controller (48)designed to implement the method according to any one of claims 1 to 8.



 

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3 dwg

FIELD: transport.

SUBSTANCE: fluid-controlled slide valve is arranged between load mechanism hydraulic cylinder rod end and pressure valve inlet line. Control chamber of said valve is communicated with front shutter drive hydraulic cylinder chamber for it to be closed.

EFFECT: independent operation of hydraulic cylinders.

2 dwg

FIELD: construction.

SUBSTANCE: device to control lifting-digging mechanisms comprises a compressor, an oil separator and a receiver, which are pneumatically connected to each other in series. The outlet of the receiver is pneumatically connected to inputs of adsorbers with evenly distributed heaters, and outlets of adsorbers are pneumatically connected to a consumer. The compressor is equipped with a suction filter. The filter is made in the form of a double-layer jacket with an air cavity, connected by a nozzle of input of heating regenerated air. Adsorbers are equipped with a thermoelectric generator comprising a through channel for regenerated air and a through channel for dried compressed air, inside of which there are accordingly hot and cold ends of a set of differential thermocouples.

EFFECT: reduced power inputs when producing compressed air of specified quality for a device of lifting-digging mechanisms control.

3 dwg

FIELD: construction.

SUBSTANCE: pump-accumulator hydraulic drive to rotate an earth-mover platform comprises a controlled pump, hydraulic distributors, safety and check valves, a hydraulic accumulator, a relay controller, connected to each other by hydraulic manifolds, and a controlled hydromotor. At the same time one of hydraulic distributors is installed between the controlled pump and the controlled hydromotor of platform rotation. Safety valves are valves with two adjustment pressures. The second hydraulic distributor is arranged between the controlled pump and the first hydraulic distributor, serving to change power streams from the controlled hydraulic pump to the hydraulic accumulator.

EFFECT: maximum use of kinetic energy of a rotary platform, reduced wear and lower loads in a mechanism of earth-mover platform rotation, reduced quantity of hydraulic scheme elements.

1 dwg

FIELD: earth-moving facilities; hydraulic drives of scraper working members.

SUBSTANCE: proposed hydraulic drive contains pressure spool installed in parallel with like spaces of two hydraulic cylinders, pressure main line connected between two check valves, free outlet of check valve being connected with inlet of pressure spool and one hydraulic cylinder. Free inlet is connected with outlet of pressure spool and other hydraulic cylinder, drum main line connects opposite spaces of hydraulic cylinders. Hydraulic drive is furnished with two series-connected pressure spools. Inlet of first pressure spool and outlet of second pressure spool are connected with outlet of first hydraulically controlled reversible spool. Their common line is connected with controllable space of second hydraulic cylinder and is separated by check valve from pressure main line. Inlets of first hydraulically controlled reversible spool are connected to outputs of second hydraulically controlled reversible spool and are connected with controllable spaces of first and second hydraulic cylinders. One inlet of second hydraulically controlled reversible spool is connected with inlet of pressure spool and is connected to pressure line through check valve, and second inlet is separated from pressure line by other check valve. Control spaces of two hydraulically controlled reversible spools are united and are connected to pressure main line through two-position spool.

EFFECT: improved efficiency of control of scraper blade system.

4 dwg

FIELD: handling machinery, particularly soil-shifting, mining, agricultural and loading cyclic machines.

SUBSTANCE: device includes implement, main hydraulic cylinders and balancing hydraulic cylinder, at least one gas cylinder and hydropneumatic accumulator, main and additional hydrodistributors, as well as safety valve. Gas cylinder communicates with gas chamber of hydropneumatic accumulator. Device made in the first embodiment has the second additional hydrodistributor connecting working chambers of the main hydraulic cylinders with each other and with pump. Rod end of balancing hydraulic cylinder communicates with rod ends of the main ones. In the second embodiment additional hydraulic cylinder is arranged in main hydrodistributor case and connected to hydrolines of the main hydraulic cylinders through hydrolines. Additional hydrodistributor is installed so that additional hydrodistributor may connect working chambers of the main hydraulic cylinders with each other and with the pump when additional hydrodistributor is installed in the first position. Additional hydrodistributor being installed in the second position may connect working chambers of main hydraulic cylinders with each other and with drain. Rod end of balancing hydraulic cylinder is connected with rod ends of main hydraulic cylinders.

EFFECT: increased machine productivity due to increased implement hoisting speed.

3 cl, 4 dwg

FIELD: mechanical engineering, particularly hydraulically driven dredgers.

SUBSTANCE: drive comprises power plant with controlled power pumps having servo control taps, gear-box, hydraulic motors and hydraulic equipment. Hydraulic equipment has hydraulic distributor with address travel spool and its servo control taps, power hydraulic lines and servo control loop with hydraulic lines. The controlled power pumps may supply predetermined volume of working liquid at zero pressure in servo control lines thereof. Hydraulic lines for servo control of address travel spool have additional circuit including control unit, servo control lines and logical hydraulic OR valve with two inlet and one outlet taps. Hydraulic lines of servo control circuit included in additional loop are connected with inlet taps of hydraulic OR valve having outlet tap communicated with servo control taps of address travel spool.

EFFECT: provision of no-failure gear actuation in standing still dredger.

2 dwg

FIELD: mechanical engineering, particularly hydraulic systems for mobile machines.

SUBSTANCE: hydraulic system comprises hydraulic reservoir, controllable hydraulic pump with load-sensitive control slide, power hydraulic line protected with safety valve, main hydraulic distributor with three-position slide having one pressure supply means, two discharge lines, two working outlet means and line, which provides connection of each working outlet means with LS line, attached to control slide. The hydraulic system is provided with pressure control valve and with controllable reducing valve installed in LS line. Input and output of reducing valve are connected to hydraulic distributor and control slide correspondingly. Control line of reducing valve is linked to pressure control valve outlet. Inlet and discharge line of the pressure control valve are connected with power hydraulic line and with hydraulic reservoir correspondingly.

EFFECT: increased operational efficiency and reliability.

7 cl, 1 dwg

FIELD: earth-moving, mining, building machines and other wheeled and caterpillar handling periodically acting machines.

SUBSTANCE: device comprises working implement, main and balancing hydraulic cylinders, gas cylinder, main and additional working liquid distribution means. The piston cavity of balancing hydraulic cylinder is connected with gas cylinder. Additional distribution means may connect working cavities of main hydraulic cylinders one with another and with hydraulic pump during implement lifting.

EFFECT: increased working implement lifting speed without pump and system parameter change.

4 dwg

FIELD: mining industry, mechanical engineering, possible use in system for controlling caterpillar drive of mining machine.

SUBSTANCE: hydro-system contains pumps for caterpillar drive and pump, feeding system of working functions of machine, hydro-distributors for controlling caterpillar drive, driving hydro-motors and working mains, two controllable check valves and hydro-distributor for controlling system of machine working functions. Outlet channels of hydro-distributor for controlling system of machine working functions are connected to inlet channels of controllable check valves, which are connected between each other. Outlet channels of these valves are connected to working mains of driving hydro-motors and hydro-distributors for controlling caterpillar drive.

EFFECT: possible movement of mining machine in case of breakdown of driving pumps at the expense of influx of working liquid from pump driving system normally used for working functions of machine.

1 dwg

FIELD: earth moving machinery.

SUBSTANCE: invention relates to hydraulic drives of draw-booster gears of tractor-drawn scrapers. Proposed hydraulic drive contains pump, hydraulic tank, hydraulic cylinder, pressure valve connected in parallel with hydraulic cylinder, and hydraulic distributor. Hydraulic drive contains additionally hydraulic accumulator, time relay, check valve, pressure valve is provided with control line, and hydraulic cylinder has control arm engaging with two-position spool whose input is connected with pump and output, through time relay, with hydraulic accumulator and control line of pressure valve and with input of check valve whose output is connected to input of pressure valve.

EFFECT: provision of automatic continuous increase of adhesion weight of tractor of scraper when digging.

3 dwg

FIELD: earth-moving and transport machines, particularly blade assemblies having changeable width of cut.

SUBSTANCE: blade assembly comprises side sections and central section. The sections are provided with undercutting blades and are directly connected to bucket bottom. The central section is hinged to bucket bottom and is operated by rotation hydraulic cylinders through operation levers. Undercutting blades made as gussets are connected to inner edges of side sections from below. The gussets have supports to cooperate with central section in lower position thereof. Undercutting blades of central section are connected to outer side edges of central section. Undercutting gussets are provided with orifices to arrange fixers installed in lower parts of side sections so that they may cooperate with end switches. Position switches adapted to cooperate with operation levers of central section in central or extreme positions are mounted on bucket side walls. Hydraulic cylinders for central section rotation are linked in pairs to hydraulic cylinders for bucket operation. Lifting and lowering cavities of hydraulic cylinders are correspondingly communicated with raising and deepening cavities of hydraulic cylinders for central section rotation. Hydraulic drive for blade assembly includes hydraulically operated on-off three-way slide. The first outlet of the slide is united with the third one and is linked to raising cavity of hydraulic cylinder for central section rotation. Operational chamber and the first inlet of the slide are connected to outlet of pressure slide having output connected to lowering cavities of hydraulic cylinders for bucket operation. The second and the third inlets of on-off three-way slide are correspondingly connected to lifting cavities of hydraulic cylinders, which operate front bucket gate and lowering cavity of hydraulic cylinders for bucket operation.

EFFECT: decreased load to be applied to blade system during earth cutting as central section is in central and extreme positions, provision of automatic installation of above section in side blade plane and in extreme positions.

9 dwg

FIELD: mechanical engineering.

SUBSTANCE: group of invention relates to boom earth-moving, mine, construction and loading lifting-and-transporting machines of cyclic action. Proposed balancing system contains working equipment, boom hydraulic cylinders and balancing cylinder including hydraulic rod space and gas piston space connected with gas bottle, and distributors. According to first design version, hydraulic rod space of balancing cylinder is connected by hydraulic line with drain into hydraulic tank, and distributor of hydraulic liquid is installed for connecting in one position of spool, of boom hydraulic cylinders working spaces to each other with hydraulic pump. According to second design version, distributor is installed in system for connecting working spaces of boom hydraulic cylinders to each other and with hydraulic pump. According to third design version, rod space of balancing cylinder is connected with distributor installed for connecting, in one position of spool, of rod space of balancing cylinder with into hydraulic tank, and in other position, with hydraulic pump. Distributor is installed in hydraulic line of boom hydraulic cylinders for connecting, in one position of spool, of spaces of boom hydraulic cylinders to each other and with hydraulic pump.

EFFECT: increased capacity of machine owing to higher speed of lifting and lowering of working equipment.

5 cl, 6 dwg

FIELD: mechanical engineering, particularly earth-moving and construction equipment to be operated at low temperatures.

SUBSTANCE: device for hydraulic drive heating comprises heat engine and hydraulic pump kinematically connected with each other. Device also has liquid heat carrier circulation loop including heat accumulator. Heat pipe is connected to heat engine exhaust pipe through two-way valve. Heating member is arranged in tank and linked to heat engine generator.

EFFECT: increased simplicity and efficiency of hydraulic drive heating at negative ambient temperatures.

1 dwg

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