Hydraulic system of a diesel engine based vehicle mounted artillery support device and method of driving the same

Abstract

The present application relates to a kind of hydraulic system of vehicle-mounted artillery support device based on diesel engine and its driving method, adopt diesel engine as the power source of vehicle-mounted artillery hydraulic system, diesel engine drives hydraulic pump work, provides the required pressure and flow of hydraulic oil for actuator, realizes the automatic control of its action. By vehicle-mounted fuel tank, provide continuous fuel supply for diesel engine, to ensure that diesel engine long time continuous work. Diesel engine and gear pump are integrated, with large power, compact structure, start quickly, low maintenance cost and excellent controllability and stability, when working, vehicle-mounted fuel tank not only provides fuel for chassis engine, but also can provide continuous fuel supply for diesel engine in power source, greatly improve the endurance of diesel engine as power source, can well adapt to the overall layout of vehicle-mounted artillery, use requirement, reliability and supportability.

Description

Technical Field

[0001] This invention relates to the field of artillery technology, and more specifically to a hydraulic system and driving method for a diesel engine-based vehicle-mounted artillery support device. Background Technology

[0002] The support system is a crucial component of the vehicle-mounted artillery system, primarily used to withstand the recoil force during artillery firing, thereby ensuring the stability of the vehicle body. The support system employs a hydraulic transmission system, mainly composed of jack cylinder circuits and frame cylinder circuits. These two circuits automatically control the raising and lowering of the left and right jack cylinders and the retraction and extension of the left and right frame cylinders, achieving automatic support of the vehicle body. Furthermore, hydraulic locks are installed in each cylinder circuit to ensure reliable locking after the cylinders reach their designated positions.

[0003] The hydraulic system of vehicle-mounted artillery support devices based on diesel engines mostly uses the chassis engine or DC motor as the power source to drive the hydraulic pump to work, providing the support device with the required pressure and flow of hydraulic oil, and realizing the automatic control of the action of the support device's actuator.

[0004] When using a chassis engine as a power source, a non-standard, custom-designed mechanical mounting interface for the hydraulic pump is required on the chassis engine. This increases the engine's size and power output. If the hydraulic pump malfunctions and seizes up, the chassis engine may experience severe overload, leading to mechanical damage and rendering the vehicle unable to operate normally. Furthermore, if the hydraulic pump's shaft seal fails, hydraulic oil inside the pump can enter the engine, causing damage to the chassis engine. Therefore, the solution of using a hydraulic pump to obtain power from the chassis engine carries significant technical risks and can easily cause permanent and irreversible damage to the chassis engine, resulting in substantial economic losses.

[0005] When a DC motor is used as a power source, a continuous power supply is required from the vehicle's battery. However, vehicle batteries generally have limited capacity, resulting in a poor driving range for DC motors, which can only be used for short-term emergencies. Furthermore, excessive battery drain can cause the vehicle to fail to start, ultimately leading to vehicle breakdown.

[0006] A diesel engine is an engine that releases energy by burning diesel fuel. It uses diesel fuel as fuel and leverages the high temperature and pressure generated by compressing air within the cylinder to ignite the injected diesel fuel, causing it to expand and perform work. Diesel engines are characterized by high power, compact structure, reliable operation, excellent performance and economy, rapid starting, simple operation, and convenient maintenance. Furthermore, the extensive use of aluminum alloys in major internal components contributes to their lightweight nature. Currently, diesel engines are widely used in industrial automation and defense industries, but their application as a power source for artillery hydraulic systems is not yet widespread. Summary of the Invention

[0007] Objective: To provide a hydraulic system for a vehicle-mounted artillery support device based on a diesel engine, and further propose a driving method based on the aforementioned hydraulic system. The diesel engine serves as the power source for the vehicle-mounted artillery hydraulic system, driving a hydraulic pump to provide the actuators with the required pressure and flow of hydraulic oil, thereby achieving automatic control of their operation. A continuous fuel supply is provided to the diesel engine through an onboard fuel tank, ensuring long-term continuous operation and thus solving the aforementioned problems in the prior art.

[0008] Technical solution: Firstly, a hydraulic system for a vehicle-mounted artillery support device based on a diesel engine is proposed. The hydraulic system includes a chassis frame, a power source, a hydraulic oil tank, and a hydraulic control valve group.

[0009] The power source is connected to the chassis frame via a bell-shaped shock absorber. A hydraulic oil tank is mounted on the chassis frame; the power source and the hydraulic oil tank are connected. The power source includes a gear pump connected to the hydraulic oil tank and a diesel engine connected to the gear pump. A straight-through pipe connector at the pump suction port is installed at the suction port of the gear pump, and this connector is connected to the hydraulic oil tank via a pump suction hose. A straight-through pipe connector at the pump outlet port is installed at the outlet port of the gear pump, and this connector is connected to the pressure oil circuit of the hydraulic drive system via a pump outlet hose. A continuous fuel supply is provided to the diesel engine through the vehicle's fuel tank. After the diesel engine is ignited and started, it drives the gear pump to draw hydraulic oil from the hydraulic oil tank and deliver it to the hydraulic drive system at a predetermined pressure and flow rate to control the actuators of the vehicle-mounted artillery to complete their actions.

[0010] In a further embodiment of the first aspect, the hydraulic drive system further includes a hydraulic oil tank, a gear pump suction filter, a temperature sensor, a level relay, a return oil filter, and an oil tank drain ball valve, all connected to the hydraulic oil tank; a gear pump connected to the gear pump suction filter; a diesel engine connected to the input end of the gear pump; a high-pressure filter connected to the output end of the gear pump; a one-way valve connected to the high-pressure filter; the one-way valve connects to a jack cylinder circuit and a frame cylinder circuit; the jack cylinder circuit controls the lifting and lowering actions of N jack cylinders, thereby achieving automatic lifting and lowering of the vehicle-mounted artillery; N≥1; the frame cylinder circuit controls the retraction and extension actions of N frame cylinders, thereby achieving automatic support of the vehicle-mounted artillery; N≥1.

[0011] In a further embodiment of the first aspect, the hydraulic system further includes: an electromagnetic directional valve group connected to the one-way valve; the electromagnetic directional valve group consists of 2N electromagnetic directional valves, wherein N electromagnetic directional valves are used to control the jack cylinders, and the remaining N electromagnetic directional valves are used to control the frame cylinders. Furthermore, it further includes N electromagnetic directional valves for controlling the jack cylinders connected to N jack hydraulic locks, and N electromagnetic directional valves for controlling the frame cylinders connected to N frame hydraulic locks.

[0012] In a further embodiment of the first aspect, the electromagnetic reversing valve group consists of four electromagnetic reversing valves, namely: a left jack electromagnetic reversing valve, a right jack electromagnetic reversing valve, a left frame electromagnetic reversing valve, and a right frame electromagnetic reversing valve, which are connected to the check valve.

[0013] The hydraulic system also includes: a left jack hydraulic lock connected to the left jack solenoid directional valve, a left jack cylinder connected to the left jack hydraulic lock, a right jack hydraulic lock connected to the right jack solenoid directional valve, a right jack cylinder connected to the right jack hydraulic lock, a left frame hydraulic lock connected to the left frame solenoid directional valve, a left frame cylinder connected to the left frame hydraulic lock, a right frame hydraulic lock connected to the right frame solenoid directional valve, and a right frame cylinder connected to the right frame hydraulic lock.

[0014] In a further embodiment of the first aspect, the hydraulic system further includes: a return oil air cooler connected to the left jack solenoid directional valve, the right jack solenoid directional valve, the left frame solenoid directional valve, and the right frame solenoid directional valve; an inlet pressure sensor connected to the outlet end of the check valve; a return oil pressure sensor connected to the inlet end of the return oil air cooler; and an electromagnetic relief valve connected to the outlet end of the check valve and the inlet end of the return oil air cooler; wherein the outlet end of the return oil air cooler is connected to the inlet end of the return oil filter.

[0015] In a further embodiment of the first aspect, when the left jack solenoid directional valve, right jack solenoid directional valve, left frame solenoid directional valve, or right frame solenoid directional valve is in the intermediate position: the rod-side and rodless-side chambers of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder are both disconnected from the check valve; the left jack hydraulic lock, right jack hydraulic lock, left frame hydraulic lock, or right frame hydraulic lock are connected to the return oil cooler; the hydraulic oil output by the gear pump returns directly to the hydraulic oil tank through the high-pressure filter, check valve, solenoid relief valve, and return oil cooler.

[0016] In a further embodiment of the first aspect, when the left jack solenoid directional valve, right jack solenoid directional valve, left frame solenoid directional valve, or right frame solenoid directional valve is in position a: the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the check valve; the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the return oil cooler; the gear pump delivers hydraulic oil into the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder; the piston rod of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder retracts into the cylinder; the oil in the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder returns to the hydraulic oil tank via the return oil cooler.

[0017] In a further embodiment of the first aspect, when the left jack solenoid directional valve, right jack solenoid directional valve, left frame solenoid directional valve, or right frame solenoid directional valve is in position b: the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the check valve; the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the return oil cooler; the gear pump delivers hydraulic oil into the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder; the piston rod of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder extends out of the cylinder; the oil in the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder returns to the hydraulic oil tank via the return oil cooler.

[0018] Secondly, a hydraulic drive method for a vehicle-mounted artillery support device is proposed. The vehicle-mounted fuel tank provides a continuous fuel supply to the diesel engine. After the diesel engine is ignited and started, it drives a gear pump to draw hydraulic oil from the hydraulic oil tank and then delivers it to the hydraulic drive system at a predetermined pressure and flow rate.

[0019] In a further embodiment of the second aspect, the hydraulic drive method for the vehicle-mounted artillery support device includes the following steps:

[0020] When the electromagnet C of the electromagnetic relief valve is de-energized, the electromagnetic relief valve is in an unloaded state, and the oil output by the gear pump flows directly back to the hydraulic oil tank through the electromagnetic relief valve; when the electromagnet C of the electromagnetic relief valve is energized, the electromagnetic relief valve is closed, and the hydraulic system is in a pressure-building state. When the load of the actuator exceeds the set pressure of the electromagnetic relief valve, the electromagnetic relief valve opens to overflow, providing overload protection and keeping the hydraulic system pressure at a constant value or constant range.

[0021] The jack cylinder circuit achieves the extension and retraction of the left and right jack cylinders through the direction control of the left and right jack solenoid directional valves, and locks the position of the left and right jack cylinders after they have moved into place through the pressure holding function of the left and right jack hydraulic locks.

[0022] The main frame cylinder circuit achieves the extension and retraction of the left and right main frame cylinders through the direction control of the left and right main frame solenoid directional valves, and locks the position of the left and right main frame cylinders after they have moved into place through the pressure holding function of the left and right main frame hydraulic locks.

[0023] Beneficial effects: Integrating the diesel engine and gear pump into one unit results in high power, compact structure, rapid start-up, low maintenance costs, and excellent controllability and stability. During operation, the on-board fuel tank not only provides fuel to the chassis engine but also provides a continuous fuel supply to the diesel engine in the power source, greatly improving the diesel engine's range as a power source. It can well adapt to the overall layout, usage requirements, reliability, and support of vehicle-mounted artillery. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the working principle of the hydraulic system of the present invention.

[0025] Figure 2 This is a schematic diagram showing the layout of the diesel engine and hydraulic oil tank on the chassis frame.

[0026] Figure 3 A three-dimensional structural diagram of the integrated diesel engine and gear pump from one perspective.

[0027] Figure 4 A three-dimensional structural diagram of the integrated diesel engine and gear pump from one perspective.

[0028] The labels in the attached diagram are as follows: 1. Hydraulic oil tank; 2. Gear pump suction filter; 3. Temperature sensor; 4. Liquid level relay; 5. Return oil filter; 6. Oil tank drain ball valve; 7. Gear pump maintenance ball valve; 8. Gear pump; 9. Diesel engine; 10. Return oil air cooler; 11. High-pressure filter; 12. Solenoid relief valve; 13. Check valve; 14. Inlet oil pressure sensor; 15. Return oil pressure sensor; 16. Left jack solenoid directional valve; 17. Right jack solenoid directional valve; 18. Left frame solenoid directional valve. 19. Right frame solenoid directional valve; 20. Left jack hydraulic lock; 21. Right jack hydraulic lock; 22. Left frame hydraulic lock; 23. Right frame hydraulic lock; 24. Left jack cylinder; 25. Right jack cylinder; 26. Left frame cylinder; 27. Right frame cylinder; 28. Chassis frame; 29. ​​Bell-shaped shock absorber; 30. Bell housing coupling; 31. Pump suction port straight pipe connector; 32. Pump suction hose; 33. Pump outlet straight pipe connector; 34. Pump mounting fasteners; 35. Pump outlet hose. Detailed Implementation

[0029] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0030] This embodiment proposes a hydraulic system for a vehicle-mounted artillery support device based on a diesel engine 9. The hydraulic system includes a hydraulic oil tank 1, a gear pump suction filter element 2, a temperature sensor 3, a level relay 4, a return oil filter 5, and an oil tank drain ball valve 6 connected to the hydraulic oil tank 1; a gear pump maintenance ball valve 7 connected to the gear pump suction filter element 2; a gear pump 8 connected to the gear pump maintenance ball valve 7; a high-pressure filter 11 connected to the gear pump 8; a one-way valve 13 connected to the high-pressure filter 11; a left jack solenoid directional valve 16, a right jack solenoid directional valve 17, a left frame solenoid directional valve 18, and a right frame solenoid directional valve 19 connected to the one-way valve 13; a left jack hydraulic lock 20 connected to the left jack solenoid directional valve 16; a left jack cylinder 24 connected to the left jack hydraulic lock 20; and a right jack hydraulic lock 24 connected to the right jack solenoid directional valve 17. Lock 21, right jack cylinder 25 connected to right jack hydraulic lock 21, left frame hydraulic lock 22 connected to left frame solenoid directional valve 18, left frame cylinder 26 connected to left frame hydraulic lock 22, right frame hydraulic lock 23 connected to right frame solenoid directional valve 19, right frame cylinder 27 connected to right frame hydraulic lock 23, and connected to left jack solenoid directional valve 16, right jack solenoid directional valve 17, and left frame solenoid valve 18. The return oil air cooler 10 is connected to the reversing valve 18 and the right frame solenoid reversing valve 19; the inlet oil pressure sensor 14 is connected to the oil outlet of the check valve 13; the return oil pressure sensor 15 is connected to the oil inlet of the return oil air cooler 10; and the solenoid relief valve 12 is connected to the oil outlet of the check valve 13 and the oil inlet of the return oil air cooler 10. The oil outlet of the return oil air cooler 10 is connected to the oil inlet of the return oil filter 5.

[0031] When the left jack solenoid directional valve 16, right jack solenoid directional valve 17, left frame solenoid directional valve 18, or right frame solenoid directional valve 19 are in the middle position, the rod-side and rodless-side chambers of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 are all disconnected from the check valve 13. The left jack hydraulic lock 20, right jack hydraulic lock 21, left frame hydraulic lock 22, or right frame hydraulic lock 23 are connected to the return oil cooler 10. The hydraulic oil output by the gear pump 8 returns directly to the hydraulic oil tank 1 through the high-pressure filter 11, check valve 13, solenoid relief valve 12, and return oil cooler 10.

[0032] When the left jack solenoid directional valve 16, right jack solenoid directional valve 17, left frame solenoid directional valve 18, or right frame solenoid directional valve 19 is in position a, the rod-side chambers of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 are connected to the check valve 13, and the rodless chambers of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 are connected to the return oil cooler 10. In this state, the gear pump 8 delivers hydraulic oil into the rod chamber of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27. The piston rods of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 retract into the cylinder. The oil in the rodless chamber of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 returns to the hydraulic oil tank 1 via the return air cooler 10.

[0033] When the left jack solenoid valve 16, right jack solenoid valve 17, left frame solenoid valve 18, or right frame solenoid valve 19 is in position b, the rodless chamber of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 is connected to the check valve 13, and the rod chamber of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 is connected to the return oil cooler 10. In this state, the gear pump 8 delivers hydraulic oil into the rodless chamber of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27. The piston rods of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 extend out of the cylinder. The oil in the rod chamber of the left jack cylinder 24, right jack cylinder 25, left frame cylinder 26, or right frame cylinder 27 returns to the hydraulic oil tank 1 via the return air cooler 10.

[0034] When the hydraulic oil in the hydraulic oil tank 1 needs to be replaced, the waste oil can be drained by first opening the drain ball valve 6. After cleaning the hydraulic oil tank 1, new oil can be added. A temperature sensor 3 is installed in the hydraulic oil tank 1 to detect and monitor the temperature of the hydraulic oil in the system: when the oil temperature rises to a set value, the return oil cooler 10 automatically turns on to cool the oil; when the oil temperature is too high, the hydraulic system stops working. A level relay 4 is installed in the hydraulic oil tank 1 to detect and monitor the oil level; when the oil level is too low, an alarm signal is issued.

[0035] The main function of the gear pump suction filter element 2 and return filter 5 is to filter contaminants in the hydraulic system and ensure the cleanliness of the hydraulic fluid. A high-pressure filter 11 is installed in the main oil circuit of the hydraulic system to perform secondary fine filtration of the oil, ensuring that the oil meets the cleanliness requirements for hydraulic system operation. Both the high-pressure filter 11 and the return filter 5 are equipped with bypass check valves. When the filter becomes clogged or the oil pressure reaches the opening pressure of the bypass valve, the bypass valve automatically opens to ensure smooth flow of hydraulic fluid. Furthermore, both the high-pressure filter 11 and the return filter 5 are equipped with clogging alarm switches. When the filter becomes clogged, an alarm signal is sent to the hydraulic control system to prompt the operator to replace the filter element.

[0036] The gear pump 8 is the power source of the hydraulic system, and its main function is to convert mechanical energy into hydraulic pressure energy. The gear pump 8 is driven by the output shaft of the diesel engine 9, which rotates the gear pump 8 to provide hydraulic oil with the required pressure and flow to all the actuator circuits of the hydraulic system, so as to achieve a stable output of system pressure oil.

[0037] The hydraulic system's main oil circuit is equipped with an inlet pressure sensor 14 and a return pressure sensor 15 to detect and monitor the hydraulic system's working pressure and return pressure. A check valve 13 is also installed in the main oil circuit to prevent hydraulic oil from the jack cylinder circuit and the frame cylinder circuit from flowing back into the gear pump 8, which could potentially cause a malfunction in the gear pump 8.

[0038] The main oil circuit of the hydraulic system is equipped with an electromagnetic relief valve 12, which is used to set the maximum working pressure of the system. When the electromagnet c of the electromagnetic relief valve 12 is de-energized, the electromagnetic relief valve 12 is in an unloaded state, and the oil output from the gear pump 8 flows directly back to the hydraulic oil tank 1 through the electromagnetic relief valve 12. When the electromagnet c of the electromagnetic relief valve 12 is energized, the electromagnetic relief valve 12 is closed, and the hydraulic system is in a pressure-building state. When the load of the actuator exceeds the set pressure of the electromagnetic relief valve 12, the electromagnetic relief valve 12 opens to overflow, providing overload protection and keeping the hydraulic system pressure at a constant value or a constant range. The electromagnetic relief valve 12 has a manual operation function, which can be used manually in a degraded state.

[0039] The jack cylinder circuit controls the lifting and lowering movements of the left jack cylinder 24 and the right jack cylinder 25, thereby achieving automatic lifting and lowering of the vehicle body. The jack cylinder circuit controls the direction of the left jack solenoid valve 16 and the right jack solenoid valve 17 to extend and retract the left jack cylinder 24 and the right jack cylinder 25. The pressure-holding function of the left jack hydraulic lock 20 and the right jack hydraulic lock 21 ensures reliable locking of the positions of the left jack cylinder 24 and the right jack cylinder 25 after they have reached their designated positions. Both the left jack solenoid valve 16 and the right jack solenoid valve 17 in the jack cylinder circuit are equipped with handles for manual downgrading operation.

[0040] The frame cylinder circuit controls the extension and retraction of the left frame cylinder 26 and the right frame cylinder 27, thereby achieving automatic support of the vehicle body. The frame cylinder circuit controls the direction of the left frame solenoid valve 18 and the right frame solenoid valve 19 to extend and retract the left and right frame cylinders 26 and 27. The pressure-holding function of the left frame hydraulic lock 22 and the right frame hydraulic lock 23 ensures reliable locking of the positions of the left and right frame cylinders 26 and 27 after they have reached their designated positions. Both the left and right frame solenoid valves 18 and 19 in the frame cylinder circuit are equipped with handles for manual operation.

[0041] The power source of the hydraulic system includes a diesel engine 9, a bell-shaped shock absorber 29, a bell-shaped coupling 30, a gear pump 8, a straight pipe joint 31 at the pump suction port, a pump suction hose 32, a straight pipe joint 33 at the pump outlet, fasteners for pump installation 34, and a pump outlet hose 35.

[0042] The diesel engine 9 is mounted and connected to the chassis frame 28 via a bell-shaped shock absorber 29. The bell-shaped shock absorber 29 can achieve a high degree of vibration reduction under axial and lateral pressure, and its vibration reduction effect is particularly good when used in engine components.

[0043] The gear pump 8 is connected to the bell coupling 30 via pump mounting fastener 34. The straight pipe joint 31 at the pump suction port is installed at the suction port of the gear pump 8. The straight pipe joint 31 at the pump suction port is connected to the hydraulic oil tank 1 via the pump suction hose 32. The straight pipe joint 33 at the pump outlet port is installed at the outlet port of the gear pump 8. The straight pipe joint 33 at the pump outlet port is connected to the pressure oil circuit of the hydraulic system via the pump outlet hose 35.

[0044] The diesel engine 9 receives a continuous fuel supply from the vehicle's fuel tank. After the diesel engine 9 is ignited and started, it drives the gear pump 8 to draw hydraulic oil from the hydraulic oil tank 1 and then delivers it to the hydraulic system at a certain pressure and flow rate. At this time, the control system can control the operation of each actuator of the vehicle-mounted artillery.

[0045] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A hydraulic system for a vehicle-mounted artillery support device based on a diesel engine, characterized in that, include: Chassis frame; The power source is connected to the chassis frame via bell-shaped shock absorbers; A hydraulic oil tank is mounted on the chassis frame; the power source is connected to the hydraulic oil tank; the gear pump suction filter, temperature sensor, level relay, return oil filter, and oil tank drain ball valve are all connected to the hydraulic oil tank. A gear pump, connected to the gear pump suction filter element; A diesel engine is connected to the input end of the gear pump; A high-pressure filter is connected to the output end of the gear pump; A one-way valve is connected to the high-pressure filter; the one-way valve is connected to the jack cylinder circuit and the frame cylinder circuit. The jack cylinder circuit is used to control the lifting and lowering actions of N jack cylinders, thereby realizing the automatic lifting and lowering of the vehicle-mounted artillery; N≥1; The main frame cylinder circuit is used to control the extension and retraction of N main frame cylinders, thereby realizing automatic support of the vehicle-mounted artillery; N≥1; The electromagnetic directional valve group is connected to the check valve; the electromagnetic directional valve group consists of 2N electromagnetic directional valves, of which N electromagnetic directional valves are used to control the jack cylinder and the remaining N electromagnetic directional valves are used to control the frame cylinder. N solenoid directional valves used to control the hydraulic cylinders of the jacks are connected to N hydraulic locks for the jacks. N electromagnetic directional valves used to control the frame cylinders are connected to N frame hydraulic locks; The electromagnetic reversing valve group consists of four electromagnetic reversing valves: a left jack electromagnetic reversing valve, a right jack electromagnetic reversing valve, a left frame electromagnetic reversing valve, and a right frame electromagnetic reversing valve, all of which are connected to the check valve. The hydraulic system also includes: The left jack hydraulic lock connected to the left jack solenoid directional valve, the left jack cylinder connected to the left jack hydraulic lock, the right jack hydraulic lock connected to the right jack solenoid directional valve, the right jack cylinder connected to the right jack hydraulic lock, the left frame hydraulic lock connected to the left frame solenoid directional valve, the left frame cylinder connected to the left frame hydraulic lock, the right frame hydraulic lock connected to the right frame solenoid directional valve, and the right frame cylinder connected to the right frame hydraulic lock; The power source includes a gear pump connected to the hydraulic tank and a diesel engine connected to the gear pump; A straight-through pipe connector is installed at the suction port of the gear pump, and is connected to the hydraulic oil tank via a pump suction hose. A straight-through pipe connector is installed at the outlet port of the gear pump, and is connected to the pressure oil circuit of the hydraulic drive system via a pump outlet hose. The diesel engine is continuously supplied with fuel through the vehicle's fuel tank. After the diesel engine is ignited and started, it drives the gear pump to draw hydraulic oil from the hydraulic oil tank and deliver it to the hydraulic drive system at a predetermined pressure and flow rate to control the actuator of the vehicle-mounted artillery to complete the action.

2. The hydraulic system of the vehicle-mounted artillery support device based on a diesel engine according to claim 1, characterized in that, The hydraulic system also includes: a return oil air cooler connected to the left jack solenoid directional valve, the right jack solenoid directional valve, the left frame solenoid directional valve and the right frame solenoid directional valve; an inlet pressure sensor connected to the outlet end of the check valve; a return oil pressure sensor connected to the inlet end of the return oil air cooler; and a solenoid relief valve connected to the outlet end of the check valve and the inlet end of the return oil air cooler. The oil outlet of the oil return air cooler is connected to the oil inlet of the oil return filter.

3. The hydraulic system of the vehicle-mounted artillery support device based on a diesel engine according to claim 1, characterized in that, When the left jack solenoid directional valve, right jack solenoid directional valve, left frame solenoid directional valve, or right frame solenoid directional valve is in the middle position: the rod-side and rodless-side chambers of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder are both disconnected from the check valve; the left jack hydraulic lock, right jack hydraulic lock, left frame hydraulic lock, or right frame hydraulic lock are connected to the return oil cooler; the hydraulic oil output by the gear pump returns directly to the hydraulic oil tank through the high-pressure filter, check valve, solenoid relief valve, and return oil cooler.

4. The hydraulic system of the vehicle-mounted artillery support device based on a diesel engine according to claim 1, characterized in that, When the left jack solenoid directional valve, right jack solenoid directional valve, left frame solenoid directional valve, or right frame solenoid directional valve is in position a: the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the check valve; the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the return oil cooler; the gear pump delivers hydraulic oil into the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder; the piston rod of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder retracts into the cylinder; the oil in the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder returns to the hydraulic oil tank via the return oil cooler.

5. The hydraulic system of the vehicle-mounted artillery support device based on a diesel engine according to claim 1, characterized in that, When the left jack solenoid directional valve, right jack solenoid directional valve, left frame solenoid directional valve, or right frame solenoid directional valve is in position b: the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the check valve; the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder is in a conductive state with the return oil cooler; the gear pump delivers hydraulic oil into the rodless chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder; the piston rod of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder extends out of the cylinder; the oil in the rod chamber of the left jack cylinder, right jack cylinder, left frame cylinder, or right frame cylinder returns to the hydraulic oil tank through the return oil cooler.

6. A hydraulic drive method for a vehicle-mounted artillery support device, implemented based on the hydraulic system of the diesel engine-based vehicle-mounted artillery support device as described in claim 2, characterized in that, The diesel engine is continuously supplied with fuel through the on-board fuel tank. After the diesel engine is ignited and started, it drives the gear pump to draw hydraulic oil from the hydraulic oil tank and then delivers it to the hydraulic drive system at a predetermined pressure and flow rate.

7. The hydraulic drive method according to claim 6, characterized in that, Includes the following steps: When the electromagnet C of the electromagnetic relief valve is de-energized, the electromagnetic relief valve is in an unloaded state, and the oil output by the gear pump flows directly back to the hydraulic oil tank through the electromagnetic relief valve; when the electromagnet C of the electromagnetic relief valve is energized, the electromagnetic relief valve is closed, and the hydraulic system is in a pressure-building state. When the load of the actuator exceeds the set pressure of the electromagnetic relief valve, the electromagnetic relief valve opens to overflow, providing overload protection and keeping the hydraulic system pressure at a constant value or constant range. The jack cylinder circuit achieves the extension and retraction of the left and right jack cylinders through the direction control of the left and right jack solenoid directional valves, and locks the position of the left and right jack cylinders after they have moved into place through the pressure holding function of the left and right jack hydraulic locks. The main frame cylinder circuit achieves the extension and retraction of the left and right main frame cylinders through the direction control of the left and right main frame solenoid directional valves, and locks the position of the left and right main frame cylinders after they have moved into place through the pressure holding function of the left and right main frame hydraulic locks.

Images