An electrostatic hydraulic drive device for a missile transport and trailer vehicle

Abstract

The invention discloses an electrostatic hydraulic drive device for a missile transport and hanging vehicle, which relates to the technical field of missile transport and hanging, and comprises a hydraulic cylinder (1). The upper end of the hydraulic cylinder (1) is provided with a pressure oil tank (2), an integrated valve group (3), a plunger pump (4) and a motor (5) in sequence from left to right. The tail end of the hydraulic cylinder (1) is provided with a position sensor (6). The output shaft of the motor (5) is connected to the plunger pump (4). The left end of the plunger pump (4) is connected to the right end of the integrated valve group (3). The left end of the integrated valve group (3) is connected to the pressure oil tank (2). The pressure oil tank (2) is connected to the hydraulic cylinder (1). The plunger pump (4) has two oil ports, namely, oil port A and oil port B. The invention has the advantages of high capacity density, high transmission efficiency, strong maintainability and reliability, and small size.

Description

Technical Field

[0001] The invention relates to the technical field of missile transport and mounting, in particular to an electrostatic-hydraulic drive device of a missile transport and mounting integrated vehicle. Background Art

[0002] At present, the lifting and lowering of the towed bomb rack of missile transport and trailer vehicles at home and abroad generally adopts the power source and hydraulic source of the main engine, and connects the hydraulic valve and hydraulic cylinder through hydraulic pipelines to form an open throttling speed control circuit of the valve-controlled hydraulic cylinder. For example, the application number CN206530564U discloses a hydraulic cylinder differential circuit valve and a hydraulic cylinder open / closed differential circuit, including an oil replenishment module: arranged at the pump suction port to prevent the hydraulic pump from sucking out air; a flow leakage module: used to return the excess flow of the hydraulic cylinder to the oil tank; a safety module: used to limit the maximum pressure of the rod chamber and the rodless chamber of the hydraulic cylinder; a reversing module: used to achieve the change of the direction of the oil cylinder, and also provides a hydraulic cylinder open differential circuit and a hydraulic cylinder closed differential circuit open throttling speed control circuit including the hydraulic cylinder differential circuit valve. However, this open circuit is not only inefficient and generates a lot of heat, requiring a huge hydraulic oil tank and cooler for heat dissipation, but also requires complicated hydraulic pipelines to connect the hydraulic pump, hydraulic valve, hydraulic oil tank, cooler, oil cylinder, etc. on the main machine to form an open throttling speed control circuit of the valve-controlled hydraulic cylinder, which not only makes the hydraulic system inefficient, but also makes the system more complicated and has many leakage points, which greatly reduces the reliability of the missile transport and trailer integrated vehicle while also increasing the pressure of daily maintenance and support for the troops. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an electrostatic-hydraulic drive device for a missile transport-trailer integrated vehicle with high capacity density, high transmission efficiency, strong maintainability and reliability, and small size.

[0004] The objective of the present invention is achieved through the following technical scheme: an electrostatic hydraulic drive device of a missile transport and trailer integrated vehicle, comprising a hydraulic cylinder, wherein the upper end of the hydraulic cylinder is provided with a pressure oil tank, an integrated valve group, a plunger pump and a motor in sequence from left to right, a position sensor is provided at the tail end of the hydraulic cylinder, the output shaft of the motor is connected to the plunger pump, the left end of the plunger pump is connected to the right end of the integrated valve group, the left end of the integrated valve group is connected to the pressure oil tank, and the pressure oil tank is connected to the hydraulic cylinder; the plunger pump has two oil ports, namely, oil port A and oil port B.

[0005] Preferably, the integrated valve group includes a relief valve, a one-way valve, a filter, a hydraulically controlled one-way valve, a stop valve, a balancing valve, a throttle valve and a one-way throttle valve. The balancing valve is arranged between the rod chamber of the hydraulic cylinder and the plunger pump, and the balancing valve is also connected to a pressure oil tank in parallel through the stop valve, the filter, the one-way valve A and the one-way valve B. The one-way throttle valve is arranged between the rodless chamber of the hydraulic cylinder and the plunger pump. The one-way throttle valve and the balancing valve are connected through the hydraulically controlled one-way valve A, the hydraulically controlled one-way valve B and the throttle valve. There are two relief valves, which are respectively arranged on the oil port A and the oil port B of the plunger pump.

[0006] Preferably, a plurality of pressure sensors are provided on the integrated valve group.

[0007] Preferably, the filter and the one-way valve A are connected in series, and the whole of the series connection is connected in parallel with the one-way valve B.

[0008] Preferably, there are three pressure sensors, two of which are respectively arranged on the oil port A and the oil port B of the plunger pump, and the remaining one is arranged on the pressure oil tank.

[0009] Preferably, the hydraulically controlled one-way valve A and the hydraulically controlled one-way valve B are connected in series.

[0010] Preferably, the hydraulically controlled one-way valve B and the throttle valve are connected in parallel.

[0011] The present invention has the following advantages: an integrated and modular design is adopted to integrate a motor, a plunger pump, a hydraulic oil tank, an integrated valve group and a hydraulic oil cylinder to form a closed volume speed regulation circuit of a pump-controlled hydraulic cylinder, and a host does not need to provide a hydraulic power source, an oil tank, a cooler and a hydraulic pipeline, etc., which not only reduces the volume of the device, but also can realize stepless adjustment of the lifting speed of the missile transport and hanging integrated vehicle support and bomb rack in a wide range and precise displacement control, and has the advantages of high energy density, high transmission efficiency, and strong maintainability and reliability, which can greatly improve the working efficiency when the missile is hung and shorten the battle preparation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 It is a schematic diagram of the oil circuit structure of the present invention;

[0014] In the figure: 1-hydraulic cylinder, 2-pressure oil tank, 3-integrated valve group, 4-plunger pump, 5-motor, 6-position sensor, 7-overflow valve, 8-pressure sensor, 9-check valve A, 10-filter, 11-check valve B, 12-stop valve, 13-balancing valve, 14-throttle valve, 15-one-way throttle valve, 16-hydraulic control check valve A, 17-hydraulic control check valve B. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0016] like Figure 1 As shown, an electrostatic hydraulic drive device of a missile transport and trailer integrated vehicle includes a hydraulic cylinder 1, the upper end of the hydraulic cylinder 1 is provided with a pressure oil tank 2, an integrated valve group 3, a plunger pump 4 and a motor 5 in sequence from left to right, the tail end of the hydraulic cylinder 1 is provided with a position sensor 6, the output shaft of the motor 5 is connected to the plunger pump 4, the left end of the plunger pump 4 is connected to the right end of the integrated valve group 3, the left end of the integrated valve group 3 is connected to the pressure oil tank 2, and the pressure oil tank 2 is connected to the hydraulic cylinder 1; the plunger pump 4 has two oil ports, namely, oil port A and oil port B.

[0017] like Figure 2 As shown, the integrated valve group 3 includes a relief valve 7, a one-way valve, a filter 10, a hydraulically controlled one-way valve, a stop valve 12, a balancing valve 13, a throttle valve 14 and a one-way throttle valve 15. The balancing valve 13 is arranged between the rod chamber of the hydraulic cylinder 1 and the plunger pump 4, and the balancing valve 13 is also connected in parallel with the pressure oil tank 2 through the stop valve 12, the filter 10, the one-way valve A9 and the one-way valve B11. The one-way throttle valve 15 is arranged between the rodless chamber of the hydraulic cylinder 1 and the plunger pump 4. The one-way throttle valve 15 and the balancing valve 13 are connected through the hydraulically controlled one-way valve A16, the hydraulically controlled one-way valve B17 and the throttle valve 14. There are two relief valves 7, which are respectively arranged on the oil port A and the oil port B of the plunger pump 4 to ensure the stability of the inlet and outlet oil pressures of the plunger pump 4.

[0018] Preferably, a plurality of pressure sensors 8 are provided on the integrated valve group 3 .

[0019] Preferably, the filter 10 and the one-way valve A9 are connected in series, and the whole of the series connection is connected in parallel with the one-way valve B11.

[0020] Preferably, there are three pressure sensors 8 , two of which are respectively arranged on the oil port A and the oil port B of the plunger pump 4 , and the remaining one is arranged on the pressure oil tank 2 .

[0021] Preferably, the hydraulically controlled one-way valve A16 and the hydraulically controlled one-way valve B17 are connected in series.

[0022] Preferably, the hydraulically controlled one-way valve B17 and the throttle valve 14 are connected in parallel.

[0023] The working process of the present invention is as follows: in the lifting condition, that is, when the piston rod of the hydraulic cylinder 1 is retracted, the motor 5 drives the plunger pump 4 to rotate forward, and the pressure oil enters the rod chamber of the hydraulic cylinder 1 through the balance valve 13. The pressure oil in the rodless chamber of the hydraulic cylinder 1 returns to the pressure oil tank 2 through the one-way throttle valve 15 and the hydraulically controlled one-way valve B17 and the one-way valve B11. The piston rod of the hydraulic cylinder 1 is retracted, and the volume of the pressure oil flow is controlled by the balance valve 13 to achieve the piston rod of the hydraulic cylinder 1 to be kept at any position. During the whole process, the position sensor 6 can detect the displacement, detect the deviation and correct the deviation to realize the position closed-loop control.

[0024] In the lowering condition, that is, when the piston rod of the hydraulic cylinder 1 is extended, the motor 5 drives the plunger pump 4 to rotate in the opposite direction, and the oil port A of the plunger pump 4 absorbs the pressure oil from the pressure tank 2. The pressure oil flows from the pressure tank 2 to the oil port A of the plunger pump 4 through the filter 10, the one-way valve A9 and the hydraulic one-way valve A16, and the pressure oil flows out from the oil port B of the plunger pump 4. The pressure oil flows through the throttle valve 14 to open the balance valve 13. At the same time, the pressure oil flows through the one-way throttle valve 15 into the rodless chamber of the hydraulic cylinder 1, pushing the piston rod to extend, and the pressure oil in the rod chamber of the hydraulic cylinder 1 returns to the oil port A of the plunger pump 4 through the balance valve 13.

[0025] Emergency manual lowering, that is, the piston rod of the hydraulic cylinder 1 is extended. When the pressure sensor 8 detects that the oil circuit pressure is too high, emergency manual lowering is required. Release the stop valve 12, and the pressure oil in the rod chamber of the hydraulic cylinder 1 flows to the rodless chamber of the hydraulic cylinder 1 through the stop valve 12, the hydraulically controlled one-way valve B17 and the throttle valve 14. At the same time, the pressure oil in the pressure oil tank 2 flows to the rodless chamber of the hydraulic cylinder 1 through the filter 10, the one-way valve A9, the hydraulically controlled one-way valve B17 and the throttle valve 14, pushing the piston rod to extend.

Claims

1. An electrostatic hydraulic drive device for a missile transport and trailer vehicle, characterized in that: The invention comprises a hydraulic cylinder (1), wherein the upper end of the hydraulic cylinder (1) is provided with a pressure oil tank (2), an integrated valve group (3), a plunger pump (4) and a motor (5) in sequence from left to right, and the tail end of the hydraulic cylinder (1) is provided with a position sensor (6), the output shaft of the motor (5) is connected to the plunger pump (4), the left end of the plunger pump (4) is connected to the right end of the integrated valve group (3), the left end of the integrated valve group (3) is connected to the pressure oil tank (2), and the pressure oil tank (2) is connected to the hydraulic cylinder (1); the plunger pump (4) has two oil ports, namely, oil port A and oil port B; The integrated valve group (3) comprises a relief valve (7), a check valve, a filter (10), a hydraulically controlled check valve, a stop valve (12), a balancing valve (13), a throttle valve (14) and a one-way throttle valve (15); the balancing valve (13) is arranged between the rod chamber of the hydraulic cylinder (1) and the plunger pump (4); and the balancing valve (13) is also connected in parallel with a pressure oil tank (2) via the stop valve (12), the filter (10), a check valve A (9) and a check valve B (11); the one-way throttle valve (15) is arranged between the rodless chamber of the hydraulic cylinder (1) and the plunger pump (4); the one-way throttle valve (15) and the balancing valve (13) are connected via a hydraulically controlled check valve A (16), a hydraulically controlled check valve B (17) and the throttle valve (14); and there are two relief valves (7), which are respectively arranged on oil ports A and B of the plunger pump (4); The integrated valve group (3) is provided with a plurality of pressure sensors (8); the filter (10) and the one-way valve A (9) are connected in series, and the whole of the series connection is connected in parallel with the one-way valve B (11); the hydraulically controlled one-way valve A (16) and the hydraulically controlled one-way valve B (17) are connected in series; the hydraulically controlled one-way valve B (17) and the throttle valve (14) are connected in parallel; The working process of the electrostatic hydraulic drive device includes: When the piston rod of the hydraulic cylinder (1) is retracted in the lifting condition, the motor (5) drives the plunger pump (4) to rotate in the forward direction, and the pressure oil enters the rod chamber of the hydraulic cylinder (1) through the balance valve (13). The pressure oil in the rodless chamber of the hydraulic cylinder (1) returns to the pressure oil tank (2) through the one-way throttle valve (15), the hydraulic control one-way valve B (17) and the one-way valve B (11). The piston rod of the hydraulic cylinder (1) is retracted, and the volume of the pressure oil flow is controlled by the balance valve (13) to achieve the piston rod of the hydraulic cylinder (1) to be kept at any position. During the whole process, the displacement is detected by the position sensor (6), and the deviation is detected and corrected to achieve position closed-loop control. When the piston rod of the hydraulic cylinder (1) is extended in the lowering condition, the motor (5) drives the plunger pump (4) to rotate in the opposite direction. The oil port A of the plunger pump (4) draws pressure oil from the pressure oil tank (2). The pressure oil flows from the pressure oil tank 2 to the oil port A of the plunger pump (4) through the filter (10), the check valve A (9) and the hydraulic control check valve A (16). The pressure oil flows out from the oil port B of the plunger pump (4). The pressure oil flows through the throttle valve (14) to open the balance valve (13). At the same time, the pressure oil flows through the check valve (15) into the rodless chamber of the hydraulic cylinder (1), pushing the piston rod to extend. The pressure oil in the rod chamber of the hydraulic cylinder (1) returns to the oil port A of the plunger pump (4) through the balance valve (13). The piston rod of the emergency manual lowering hydraulic cylinder (1) extends. When the pressure sensor (8) detects that the oil circuit pressure is too high, the emergency manual lowering is performed, the stop valve (12) is released, and the pressure oil in the rod chamber of the hydraulic cylinder (1) flows through the stop valve (12), the hydraulically controlled non-return valve B (17) and the throttle valve (14) to the rodless chamber of the hydraulic cylinder (1). At the same time, the pressure oil in the pressure oil tank (2) flows into the rodless chamber of the hydraulic cylinder (1) through the filter (10), the check valve A (9), the hydraulic control check valve B (17) and the throttle valve (14), pushing the piston rod to extend.

2. The electrostatic-hydraulic drive device of a missile transport-trailer integrated vehicle according to claim 1, characterized in that: There are three pressure sensors (8), two of which are respectively arranged on the oil port A and the oil port B of the plunger pump (4), and the remaining one is arranged on the pressure oil tank (2).

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