Efficient and stable crawler hydraulic control system and control method thereof

Abstract

The invention relates to the technical field of hydraulic control, in particular to an efficient and stable crawler hydraulic control system and a control method thereof.The efficient and stable crawler hydraulic control system comprises a hydraulic power source, a control element, an executing mechanism and a safety protection device, the hydraulic power source comprises an axial plunger pump, and a diesel engine and a transmission device are arranged on the outer side of the axial plunger pump in a matched mode; the diesel engine drives the axial plunger pump to operate through the transmission device; the control element comprises a plurality of hydraulic control valve groups; the executing mechanism comprises an oil cylinder assembly and a motor assembly arranged in a matched mode. The safety protection device comprises a direct-acting overflow valve and a high-pressure ball valve; by accurately controlling the flow direction, pressure and flow of hydraulic oil, accurate control over the action of the crawler is achieved; by arranging a safety protection device and a real-time monitoring function, the safety of the hydraulic system is enhanced; and meanwhile, the intelligent level is improved, the energy consumption is reduced, the cost is reduced, and the management efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic control, and in particular to an efficient and stable hydraulic control system for a crawler vehicle and a control method thereof. Background Art

[0002] Tracked vehicles are widely used in military, engineering construction and special terrain operations due to their superior off-road performance and stable carrying capacity. The hydraulic control system, as the core component of the tracked vehicle, is crucial to the vehicle's power transmission, speed control, steering and load distribution functions. The performance and stability of the hydraulic control system directly affect the operating efficiency and safety of the tracked vehicle. Although the traditional tracked vehicle hydraulic control system can meet the basic functional requirements, it still has deficiencies in power source, control elements, actuators and safety protection devices. Therefore, an efficient and stable tracked vehicle hydraulic control system is needed to meet actual needs. Summary of the invention

[0003] In order to solve some deficiencies in the above-mentioned prior art, the present invention provides a highly efficient and stable tracked vehicle hydraulic control system and a control method thereof.

[0004] To achieve the above-mentioned purpose, the present invention provides an efficient and stable tracked vehicle hydraulic control system, including a hydraulic power source, a control element, an actuator and a safety protection device, wherein the hydraulic power source includes an axial piston pump, and a diesel engine and a transmission device are arranged on the outer side of the axial piston pump; the diesel engine drives the axial piston pump to operate through the transmission device; the control element includes a hydraulic control valve group, and the hydraulic control valve group is provided with multiple ones, and the flow direction, pressure and flow rate of the hydraulic oil are regulated by accurately controlling the opening and closing of the hydraulic control valve group; the actuator includes a cylinder assembly and a motor assembly arranged in combination, and the movement of the tracked vehicle is realized by the cylinder assembly and the motor assembly; the safety protection device includes a direct-acting overflow valve and a high-pressure ball valve, and through the joint action, the oil circuit is automatically cut off in the event of overpressure or abnormality in the hydraulic system to protect the safety of the system.

[0005] As a further improvement of the present invention, in order to achieve the regulation of the flow direction, pressure and flow of the hydraulic oil, optimize the performance of the hydraulic system and reduce the failure rate of the system; the hydraulic control valve group includes a one-way throttle valve and a superimposed direct-acting pressure reducing valve, and a superimposed hydraulically controlled one-way valve is also arranged between the one-way throttle valve and the superimposed direct-acting pressure reducing valve; the hydraulic control valve group also includes a manual reversing valve and an electromagnetic reversing valve; the hydraulic control valve group adopts a modular design as a whole, and each valve is combined by superposition or series connection.

[0006] As a further improvement of the present invention, in order to effectively convert hydraulic energy into mechanical energy and enable the tracked vehicle to complete various expected actions; the cylinder assembly includes a leg lifting cylinder, which is equipped with a leg three-way interface 1 and a leg three-way interface 2; the cylinder assembly also includes a walking and moving cylinder, which is also equipped with a swivel joint side interface; the motor assembly includes a hydraulic motor, which is equipped with a plurality of motor oil interfaces.

[0007] As a further improvement of the present invention, in order to ensure the stability and sealing of the oil during the transmission process, a connecting pipe is provided between the hydraulic power source and the hydraulic control valve group, and a transition joint is provided between the connecting pipes.

[0008] As a further improvement of the present invention, in order to realize the circulating supply and reflux of hydraulic oil, the pressure of the hydraulic system is monitored in real time to improve the reliability and stability of the system; the hydraulic power source also includes an oil inlet interface and an oil return interface, and corresponding pressure gauges are arranged on the outer sides of the oil inlet interface and the oil return interface.

[0009] The beneficial effects of the present invention are as follows: by precisely controlling the flow direction, pressure and flow rate of the hydraulic oil, precise control of the movement of the tracked vehicle is achieved; by setting up a safety protection device and a real-time monitoring function, the oil circuit can be automatically cut off in the event of overpressure or abnormal conditions in the hydraulic system, thereby protecting the system safety and enhancing the safety of the hydraulic system.

[0010] The present invention also provides a control method for an efficient and stable crawler vehicle hydraulic control system, the control method comprising the following steps: Step 1: Start the diesel engine to drive the axial piston pump to provide power for the hydraulic system; Step 2: Control the flow of hydraulic oil to each actuator through the electromagnetic reversing valve to achieve the lifting, rotation, walking and other actions of the crawler vehicle; Step 3: Use the superimposed direct-acting pressure reducing valve and superimposed hydraulic control check valve to adjust the pressure of the hydraulic oil to ensure that each actuator works under stable pressure; Step 4: Regulate and control the flow of hydraulic oil through a one-way throttle valve to control the movement speed of each pair of actuators; Step 5: During the operation of the hydraulic system, monitor the pressure gauge and oil temperature in real time. Once an abnormality is found, immediately activate the safety protection device to cut off the oil circuit and protect the system safety; Step 6: According to the operation requirements, optimize the hydraulic system performance by adjusting the control parameters to improve the operation efficiency and stability.

[0011] As a further improvement of the present invention, in order to realize automatic detection and alarm and enhance the maintainability of the system, the control method also includes a fault self-diagnosis function, which automatically detects and alarms when a fault occurs in the hydraulic system, prompting maintenance personnel to handle it in time.

[0012] As a further improvement of the present invention, in order to improve the level of intelligence, reduce energy consumption and reduce costs; the control method adopts an intelligent control algorithm, which can automatically adjust the pressure and flow of the hydraulic system according to the working state and load conditions of the crawler vehicle, thereby achieving energy saving and consumption reduction and intelligent control.

[0013] As a further improvement of the present invention, in order to realize remote maintenance of the hydraulic system and improve management efficiency; the control method also includes remote monitoring and data transmission functions, which transmit the working status of the hydraulic system to the remote monitoring center in real time through wireless communication technology to realize remote monitoring and data storage and analysis.

[0014] The beneficial effects of the present invention also include: introducing a fault self-diagnosis function to automatically detect and alarm when a hydraulic system fault occurs, thereby reducing downtime caused by the fault; adopting an intelligent control algorithm to improve the intelligence level, reduce energy consumption, and reduce costs; and adding remote monitoring and data transmission functions to improve management efficiency.

[0015] When the present invention is working, the hydraulic system of the crawler vehicle is first checked. After the inspection is correct, the diesel engine is started, and the axial piston pump is driven to work through the transmission device to provide power for the entire hydraulic system; the electromagnetic reversing valve is used to control the flow direction of the hydraulic oil to realize the lifting, rotation, walking and other actions of the crawler vehicle; the pressure of the hydraulic oil is accurately adjusted by the superimposed direct-acting pressure reducing valve and the superimposed hydraulic-controlled one-way valve to ensure that each actuator works under a stable pressure; the one-way throttle valve is used to adjust the flow of the hydraulic oil to control the movement speed of each actuator; during the working process of the hydraulic system, the pressure gauge and oil temperature are monitored in real time to ensure the stable operation of the system. Once the pressure gauge indicates an abnormality or the oil temperature is too high, the hydraulic system is started immediately. The dynamic safety protection device, namely the direct-acting relief valve and high-pressure ball valve, will automatically cut off the oil circuit to protect the safety of the system; then adjust the control parameters according to the operation requirements, optimize the performance of the hydraulic system, and improve the operation efficiency and stability; adopt the intelligent control algorithm to automatically adjust the pressure and flow of the hydraulic system according to the working status and load conditions of the crawler vehicle, so as to achieve energy saving and consumption reduction and intelligent control; the system has the function of self-diagnosis of faults. Once a fault occurs, it will automatically detect and alarm, prompting maintenance personnel to deal with it in time; through wireless communication technology, the working status of the hydraulic system is transmitted to the remote monitoring center in real time, realizing remote monitoring and data storage and analysis, and providing data support for system maintenance and optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings: Figure 1 It is a schematic diagram of the hydraulic control system of the present invention.

[0017] Figure 2 It is a schematic diagram of the hydraulic valve oil circuit of the present invention.

[0018] Among them, 1 outrigger lifting cylinder, 2 one-way throttle valve, 3 superimposed hydraulically controlled one-way valve, 4 manual reversing valve, 5 superimposed direct-acting pressure reducing valve, 6 hydraulic motor, 7 solenoid reversing valve, 8 walking cylinder, 9 high-pressure ball valve, 10 direct-acting overflow valve, 11 axial piston pump, 12 transmission device, 13 diesel engine, 14 outrigger three-way interface 1, 15 transition joint, 16 outrigger three-way interface 2, 17 connecting pipe, 18 swivel joint side interface, 19 return oil interface, 20 motor oil interface, 21 oil inlet interface, 22 pressure gauge. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution in this application, Figure 1-2 The present invention is further described. The following examples are only used to more clearly illustrate the technical solution of the present invention, and are not intended to limit the protection scope of the present invention.

[0020] like Figure 1-2The hydraulic control system of a crawler vehicle shown in the figure comprises a hydraulic power source, a control element, an actuator and a safety protection device, wherein the hydraulic power source comprises an axial piston pump 11, and a diesel engine 13 and a transmission device 12 are arranged on the outer side of the axial piston pump 11; the diesel engine 13 drives the axial piston pump 11 to operate through the transmission device 12; the control element comprises a hydraulic control valve group, and the hydraulic control valve group is provided with a plurality of them, and the flow direction, pressure and flow rate of the hydraulic oil are regulated by accurately controlling the opening and closing of the hydraulic control valve group; the actuator comprises a cylinder assembly and a motor assembly arranged in cooperation, and the movement of the crawler vehicle is realized by the cylinder assembly and the motor assembly; the safety protection device comprises a direct-acting overflow valve 10 and a high-pressure ball valve 9, and through their joint action, the oil circuit is automatically cut off in the event of overpressure or abnormality in the hydraulic system to protect the safety of the system; the hydraulic control valve group comprises a one-way throttle valve 2 and a superimposed direct-acting pressure reducing valve 5, which A superimposed hydraulically controlled one-way valve 3 is also arranged between the one-way throttle valve 2 and the superimposed direct-acting pressure reducing valve 5; the hydraulic control valve group also includes a manual reversing valve 4 and an electromagnetic reversing valve 7; the hydraulic control valve group as a whole adopts a modular design, and each valve is combined by superposition or series connection; the cylinder assembly includes an outrigger lifting cylinder 1, on which an outrigger three-way interface 14 and an outrigger three-way interface 2 16 are provided; the cylinder assembly also includes a walking and moving cylinder 8, on which a swivel joint side interface 18 is also provided; the motor assembly includes a hydraulic motor 6, on which a plurality of motor oil interfaces 20 are provided; a connecting pipe 17 is provided between the hydraulic power source and the hydraulic control valve group, and a transition joint 15 is provided between the connecting pipes 17; the hydraulic power source also includes an oil inlet interface 21 and an oil return interface 19, and corresponding pressure gauges 22 are provided on the outer sides of the oil inlet interface 21 and the oil return interface 19.

[0021] As shown in 1-2, a control method for an efficient and stable hydraulic control system of a crawler vehicle comprises the following steps: Step 1: Start the diesel engine 13 to drive the axial piston pump 11 to work and provide power for the hydraulic system; Step 2: Control the hydraulic oil to flow to each actuator through the electromagnetic reversing valve 7 to realize the lifting, rotation, walking and other actions of the crawler vehicle; Step 3: Use the superimposed direct-acting pressure reducing valve 5 and the superimposed hydraulically controlled one-way valve 3 to adjust the pressure of the hydraulic oil to ensure that each actuator works under a stable pressure; Step 4: Regulate and control the flow of hydraulic oil through the one-way throttle valve 2 to control the movement speed of each pair of actuators; Step 5: During the operation of the hydraulic system, the pressure gauge 22 and the oil temperature are monitored in real time. Once an abnormality is found, the safety protection device is immediately activated to cut off the oil circuit to protect the system safety; Step 6: According to the operation requirements, optimize the hydraulic system performance by adjusting the control parameters to improve the operation efficiency and stability.

[0022] The control method also includes a fault self-diagnosis function. When a fault occurs in the hydraulic system, it automatically detects and alarms, prompting maintenance personnel to deal with it in time; the control method adopts an intelligent control algorithm, which can automatically adjust the pressure and flow of the hydraulic system according to the working status and load conditions of the crawler vehicle, thereby achieving energy saving and consumption reduction and intelligent control; the control method also includes remote monitoring and data transmission functions, which transmit the working status of the hydraulic system to a remote monitoring center in real time through wireless communication technology, thereby achieving remote monitoring and data storage and analysis.

[0023] When the present invention is working, the hydraulic system of the crawler vehicle is first checked. After the inspection is correct, the diesel engine 13 is started, and the axial piston pump 11 is driven to work through the transmission device 12 to provide power for the entire hydraulic system; the electromagnetic reversing valve 7 is used to control the flow direction of the hydraulic oil to realize the lifting, rotation, walking and other actions of the crawler vehicle; the pressure of the hydraulic oil is accurately adjusted by the superimposed direct-acting pressure reducing valve 5 and the superimposed hydraulic control one-way valve 3 to ensure that each actuator works under a stable pressure; the one-way throttle valve 2 is used to adjust the flow of the hydraulic oil, thereby controlling the movement speed of each actuator; during the operation of the hydraulic system, the pressure gauge 22 and the oil temperature are monitored in real time to ensure the stable operation of the system. Once it is found that the pressure gauge 22 indicates an abnormality or the oil If the temperature is too high, the safety protection device will be activated immediately, that is, the direct-acting relief valve and high-pressure ball valve will automatically cut off the oil circuit to protect the safety of the system; then, according to the operation requirements, the control parameters are adjusted to optimize the performance of the hydraulic system and improve the operation efficiency and stability; the intelligent control algorithm is used to automatically adjust the pressure and flow of the hydraulic system according to the working status and load conditions of the crawler vehicle to achieve energy saving and consumption reduction and intelligent control; the system has a fault self-diagnosis function. Once a fault occurs, it will automatically detect and alarm to prompt maintenance personnel to deal with it in time; through wireless communication technology, the working status of the hydraulic system is transmitted to the remote monitoring center in real time, remote monitoring and data storage and analysis are realized, and data support is provided for system maintenance and optimization.

[0024] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. An efficient and stable crawler vehicle hydraulic control system, comprising a hydraulic power source, a control element, an actuator and a safety protection device, characterized in that: The hydraulic power source comprises an axial piston pump (11), and a diesel engine (13) and a transmission device (12) are arranged on the outer side of the axial piston pump (11); the diesel engine (13) drives the axial piston pump (11) to operate through the transmission device (12); the control element comprises a hydraulic control valve group, and the hydraulic control valve group is provided with a plurality of them, and the flow direction, pressure and flow rate of the hydraulic oil are regulated by accurately controlling the opening and closing of the hydraulic control valve group; the actuator comprises an oil cylinder assembly and a motor assembly arranged in cooperation, and the movement of the crawler vehicle is achieved by the oil cylinder assembly and the motor assembly; the safety protection device comprises a direct-acting overflow valve (10) and a high-pressure ball valve (9), and through their combined action, the oil circuit is automatically cut off in the event of overpressure or abnormality in the hydraulic system, thereby protecting the safety of the system.

2. The highly efficient and stable crawler vehicle hydraulic control system according to claim 1 is characterized in that: The hydraulic control valve group comprises a one-way throttle valve (2) and a stacked direct-acting pressure reducing valve (5), wherein a stacked hydraulically controlled one-way valve (3) is arranged between the one-way throttle valve (2) and the stacked direct-acting pressure reducing valve (5); the hydraulic control valve group further comprises a manual reversing valve (4) and an electromagnetic reversing valve (7); the hydraulic control valve group as a whole adopts a modular design, and the valves are combined in a stacked or series manner.

3. The highly efficient and stable crawler vehicle hydraulic control system according to claim 1 is characterized in that: The cylinder assembly comprises an outrigger lifting cylinder (1), the outrigger lifting cylinder (1) being provided with an outrigger three-way interface 1 (14) and an outrigger three-way interface 2 (16); the cylinder assembly further comprises a walking and moving cylinder (8), the walking and moving cylinder (8) being provided with a swivel joint side interface (18); the motor assembly comprises a hydraulic motor (6), the hydraulic motor (6) being provided with a plurality of motor oil interfaces (20).

4. The efficient and stable crawler vehicle hydraulic control system according to claim 1 is characterized in that: A connecting pipe (17) is provided between the hydraulic power source and the hydraulic control valve group, and a transition joint (15) is provided between the connecting pipes (17).

5. The efficient and stable crawler vehicle hydraulic control system according to claim 1 is characterized in that: The hydraulic power source further comprises an oil inlet interface (21) and an oil return interface (19), and corresponding pressure gauges (22) are provided on the outer sides of the oil inlet interface (21) and the oil return interface (19).

6. A highly efficient and stable control method for a crawler vehicle hydraulic control system, characterized in that: The control method comprises the following steps: Step 1: Start the diesel engine (13) to drive the axial piston pump (11) to work and provide power for the hydraulic system; Step 2: Control the flow of hydraulic oil to each actuator through the electromagnetic reversing valve (7) to achieve the lifting, rotation, walking and other actions of the crawler vehicle; Step 3: Use the superimposed direct-acting pressure reducing valve (5) and the superimposed hydraulically controlled non-return valve (3) to adjust the pressure of the hydraulic oil to ensure that each actuator operates under a stable pressure; Step 4: Regulate and control the flow of hydraulic oil through the one-way throttle valve (2) to control the movement speed of each pair of actuators; Step 5: During the operation of the hydraulic system, the pressure gauge (22) and the oil temperature are monitored in real time. Once an abnormality is found, the safety protection device is immediately activated to cut off the oil circuit to protect the system safety; Step 6: According to the operation requirements, optimize the hydraulic system performance by adjusting the control parameters to improve the operation efficiency and stability.

7. The control method of the crawler vehicle hydraulic control system according to claim 6 is characterized in that: The control method also includes a fault self-diagnosis function, which automatically detects and alarms when a fault occurs in the hydraulic system, prompting maintenance personnel to handle it in time.

8. The control method of the highly efficient and stable crawler vehicle hydraulic control system according to claim 6 is characterized in that: The control method adopts an intelligent control algorithm, and can automatically adjust the pressure and flow of the hydraulic system according to the working state and load condition of the crawler vehicle, thereby achieving energy saving and consumption reduction and intelligent control.

9. The control method of a highly efficient and stable crawler vehicle hydraulic control system according to claim 6, characterized in that: The control method also includes remote monitoring and data transmission functions, which transmit the working status of the hydraulic system to a remote monitoring center in real time through wireless communication technology to achieve remote monitoring and data storage and analysis.

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