Hydraulic overflow device for flying wing vehicle

Abstract

The hydraulic overflow device for the flying wing vehicle comprises a machine shell and an oil tank which is installed on the outer wall of one side of the machine shell in a sealed mode, a hydraulic circulating pump is installed at the bottom of the machine shell, a starting switch is installed at the top end of the hydraulic circulating pump, a middle valve plate is installed on an oil inlet of the hydraulic circulating pump, and an oil outlet of the middle valve plate is provided with an oil outlet. An oil suction pipe and an oil return pipe which extend into the oil tank are installed on the outer wall of one side of the middle valve plate, the oil suction pipe is communicated with an oil inlet of the hydraulic circulating pump, and an oil outlet and an oil return opening are formed in the outer wall of the side, away from the oil tank, of the middle valve plate. The structure cost and the use cost of the hydraulic system can be remarkably reduced by reducing the number and complexity of the hydraulic devices, meanwhile, the use of hydraulic components such as a hydraulic pump and a control valve is reduced, the vehicle-mounted space of the flying wing vehicle can be saved, and potential fault points of the hydraulic system are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pipelines of wing trucks, and particularly relates to a hydraulic overflow device for wing trucks. Background Technique

[0002] A wing truck (or wing-type vehicle) is a specially designed vehicle with wing plates installed on both sides of its carriage, which can be controlled to unfold or fold by a hydraulic system. The hydraulic system plays a crucial role in such vehicles. It can effectively control the movement of the wing plates, providing the required force and precise control. The hydraulic system provides high-pressure hydraulic oil through a hydraulic pump to drive a hydraulic cylinder to push the movement of the wing plates. The hydraulic cylinder, as an actuator, is similar to a piston mechanism and pushes the expansion and contraction of the wing plates according to the pressure change of the hydraulic oil. This process is achieved by precisely adjusting the flow direction and pressure of the hydraulic oil through a control valve to ensure that the wing plates can respond quickly under different speeds and road conditions. At the same time, the overflow valve acts as a safety valve to protect the system from overload damage. When the system pressure exceeds the set value, the overflow valve will release the excess hydraulic oil to ensure the stable operation of the system. However, at present, the hydraulic devices of wing trucks need to be arranged according to the position and quantity of the hydraulic pumps. That is, when two sets of hydraulic cylinders are set, the hydraulic devices also need to correspond to them. Moreover, the design of the hydraulic system needs to consider multiple hydraulic components such as hydraulic pumps, hydraulic cylinders, control valves, and overflow valves, and precise arrangement and installation are required. This increases the complexity of the design and manufacture of hydraulic pipelines, thereby increasing the hydraulic control cost. In addition, the increase in hydraulic devices will also occupy more vehicle body space, increase the weight of the vehicle, and thus increase the structural cost of the wing truck. Content of the Utility Model

[0003] The purpose of the utility model is to provide a hydraulic overflow device for wing trucks to solve the problems raised in the above background technique.

[0004] To achieve the above object, the present utility model provides the following technical solutions: A hydraulic overflow device for a flying wing vehicle, including a machine shell and a fuel tank hermetically installed on the outer wall of one side of the machine shell. A hydraulic circulation pump is installed at the bottom of the machine shell, and a start switch is installed at the top of the hydraulic circulation pump. A central valve plate is installed at the oil inlet of the hydraulic circulation pump, and an oil suction pipe and a return oil pipe extending into the fuel tank are installed on the outer wall of one side of the central valve plate. The oil suction pipe is interconnected with the oil inlet of the hydraulic circulation pump. An oil outlet and a return oil port are provided on the outer wall of the central valve plate away from the fuel tank. The return oil port is interconnected with the return oil pipe. The inlet of the oil outlet is connected to the oil outlet part of the hydraulic circulation pump. At least two solenoid valves connected in series are installed on the inner wall of one side of the machine shell. Oil discharge interfaces and return oil interfaces connected to the connection parts of the hydraulic cylinders of the flying wing vehicle are installed at both ends of the surface of the solenoid valve. A start key switch is installed on one side of the surface of the machine shell. The output end of the start key switch is electrically connected to the input end of the start switch. The output end of the start switch is electrically connected to the input end of the hydraulic circulation pump.

[0005] Preferably, the outlet of the oil outlet is interconnected with the inlet of the solenoid valve, and the return liquid port of the solenoid valve is interconnected with the return oil port.

[0006] Preferably, one end of the oil suction pipe extends into the fuel tank and a filter is installed.

[0007] Preferably, an oil filling interface is installed on the inner wall of one side of the machine shell, and one end of the oil filling interface extends into the fuel tank.

[0008] Preferably, an overflow valve unit is installed on one side of the top of the central valve plate, and the output port of the overflow valve unit is interconnected with the oil filling interface through a hose.

[0009] Preferably, the machine shell is composed of a rectangular open shell and a right-angle cover plate that are bolted together to form a cubic shell, and the other end of the oil filling interface extends into the rectangular open shell.

[0010] Preferably, a rubber sealing ring is installed at the opening position on the side of the fuel tank close to the machine shell, and chassis are fixed on both sides of the bottom end of the machine shell.

[0011] Compared with the prior art, the beneficial effects of the present utility model are: By setting structures such as a hydraulic circulation pump and a central valve plate that cooperate with each other, this hydraulic overflow device for a flying wing vehicle uses a set of hydraulic devices to control multiple hydraulic cylinders, can achieve the synchronous movement of the hydraulic cylinders, ensure the synchronization during the unfolding and folding of the wing plates, effectively improve the operation accuracy and reliability, and reduce the number and complexity of the hydraulic devices, which can significantly reduce the structural cost and usage cost of the hydraulic system. At the same time, reducing the use of hydraulic components such as hydraulic pumps and control valves can also save the on-vehicle space of the flying wing vehicle and reduce potential failure points of the hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic three-dimensional structure diagram of the present utility model Figure 1 ;

[0013] Figure 2 is a schematic three-dimensional structure diagram of the present utility model Figure 2 ;

[0014] Figure 3 is a schematic three-dimensional structure diagram of the present utility model in an exploded state Figure 1 ;

[0015] Figure 4 is a schematic three-dimensional structure diagram of the present utility model in an exploded state Figure 2 ;

[0016] Figure 5 is a schematic three-dimensional structure diagram of the present utility model in a separated state of the housing and the oil storage tank;

[0017] Figure 6 is a schematic three-dimensional structure diagram of the middle valve plate of the present utility model.

[0018] In the figure: 1. housing; 101. rectangular opening housing; 102. right-angle cover plate; 103. oil filling interface; 2. oil tank; 201. rubber sealing ring; 3. chassis; 4. hydraulic circulation pump; 401. suction pipe; 402. return pipe; 5. start switch; 6. start key switch; 7. middle valve plate; 701. oil outlet; 702. return oil port; 8. solenoid valve; 801. oil discharge interface; 802. return oil interface; 9. overflow valve unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-6, an embodiment provided by the present utility model: a hydraulic overflow device for a flying wing vehicle, including a housing 1 and a fuel tank 2 sealed and installed on the outer wall of one side of the housing 1. A hydraulic circulation pump 4 is installed at the bottom of the housing 1, and a start switch 5 is installed at the top of the hydraulic circulation pump 4. A middle valve plate 7 is installed at the oil inlet of the hydraulic circulation pump 4, and an oil suction pipe 401 and an oil return pipe 402 extending into the fuel tank 2 are installed on the outer wall of one side of the middle valve plate 7. The oil suction pipe 401 is communicated with the oil inlet of the hydraulic circulation pump 4. An oil outlet 701 and an oil return port 702 are arranged on the outer wall of the middle valve plate 7 away from the fuel tank 2. The oil return port 702 is communicated with the oil return pipe 402. The inlet of the oil outlet 701 is connected to the oil outlet part of the hydraulic circulation pump 4. At least two solenoid valves 8 connected in series and in conduction are installed on the inner wall of one side of the housing 1. Oil discharge interfaces 801 and oil return interfaces 802 connected to the hydraulic cylinder joint of the flying wing vehicle are respectively installed at both ends of the surface of the solenoid valve 8. A start key switch 6 is installed on one side of the surface of the housing 1. The output end of the start key switch 6 is electrically connected to the input end of the start switch 5, and the output end of the start switch 5 is electrically connected to the input end of the hydraulic circulation pump 4;

[0021] When the hydraulic circulation pump 4 works, it generates suction, so that the hydraulic oil in the fuel tank 2 is sucked into the middle valve plate 7 through the oil suction pipe 401 and enters each solenoid valve 8 through the oil outlet 701. When the solenoid valve 8 makes the oil discharge interface 801 normally open, the hydraulic oil can be sent to the connected hydraulic cylinder through the oil discharge interface 801. The outlet of the oil outlet 701 is communicated with the inlet of the solenoid valve 8, and the liquid return port of the solenoid valve 8 is communicated with the oil return port 702;

[0022] When the hydraulic cylinder needs to discharge hydraulic oil, the solenoid valve 8 acts and makes the oil discharge interface 801 in a normally closed state, while the oil return interface 802 is in a normally open state. Then, the hydraulic oil re-enters the fuel tank 2 through the oil return interface 802, the oil return port 702 and the oil return pipe 402;

[0023] One end of the oil suction pipe 401 extends into the fuel tank 2 and a filter is installed. The staff installs a filter at the top of the oil suction pipe 401 to reduce the entry of debris into components such as the middle valve plate 7, the solenoid valve 8, and the hydraulic circulation pump 4, thereby causing wear and extending the service life of the equipment;

[0024] An oil injection interface 103 is installed on the inner wall of one side of the housing 1. One end of the oil injection interface 103 extends into the interior of the fuel tank 2. The housing 1 is composed of a rectangular open shell 101 and a right-angle cover plate 102 that are bolted together to form a cubic housing. The other end of the oil injection interface 103 extends into the interior of the rectangular open shell 101. The staff can release the bolt connection point limit between the rectangular open shell 101 and the right-angle cover plate 102 and separate the rectangular open shell 101 and the right-angle cover plate 102, so that the rectangular open shell 101 is in an open state. At this time, the staff can normally add hydraulic oil to the fuel tank 2 through the oil injection interface 103;

[0025] An overflow valve unit 9 is installed on one side of the top end of the middle valve plate 7. The output port of the overflow valve unit 9 is connected to the oil injection interface 103 through a hose. The overflow valve unit 9 at the top end of the middle valve plate 7 plays a protective role. When the system pressure exceeds the set value, the overflow valve unit 9 will open to release the excess hydraulic oil into the fuel tank 2 to prevent the hydraulic system from being damaged due to overload. During this process, the overflow valve unit 9 can be connected to the oil injection interface 103 through a hose. On the one hand, it ensures that the overflowed hydraulic oil can enter the fuel tank 2 by itself. On the other hand, the setting of the oil injection interface 103 can also help the staff quickly replenish hydraulic oil into the fuel tank 2;

[0026] A rubber sealing ring 201 is installed at the opening position on the side of the fuel tank 2 close to the housing 1. Both sides of the bottom end of the housing 1 are fixed with a chassis 3. A rubber sealing ring 201 is arranged between the connecting surfaces of the fuel tank 2 and the rectangular open shell 101 to ensure the sealing performance of the fuel tank 2.

[0027] When the embodiment of the present application is in use, first, the staff connects each electromagnetic valve 8 to the hydraulic cylinder of the flying wing vehicle through an oil pipe. The number of series-connected electromagnetic valves 8 is determined according to the number of hydraulic cylinders of the flying wing vehicle. When the staff needs to control multiple hydraulic cylinders of the flying wing vehicle to act together, the staff starts the start switch 5 by turning on the key switch 6 to work. Then the start switch 5 supplies power to the hydraulic circulation pump 4 and starts to work. Subsequently, the hydraulic circulation pump 4 generates suction and sucks hydraulic oil from the fuel tank 2, and increases its pressure and then transports it to the middle valve plate 7. When the oil discharge interface 801 of the electromagnetic valve 8 is in the normally open state, the hydraulic oil in the middle valve plate 7 enters the electromagnetic valve 8 and is sent to the corresponding hydraulic cylinder through the oil discharge interface 801 and the hydraulic pipe connected to the oil discharge interface 801. By synchronously controlling the opening and closing states of each electromagnetic valve 8 through the flying wing vehicle control system, the flow direction and pressure of the hydraulic oil can be determined, so as to control the piston movement of the corresponding hydraulic cylinder. That is, when the electromagnetic valve 8 receives an instruction, it opens or closes to control the flow direction of the hydraulic oil, and the piston rod of the flying wing vehicle hydraulic cylinder will expand and contract according to the pressure change of the oil. When multiple hydraulic cylinders are controlled by this device, their pistons will be simultaneously subjected to the same oil pressure and instruction, so as to achieve synchronous movement.

Claims

1. A hydraulic overflow device for a flying wing vehicle, characterized in that: The invention comprises a casing (1) and an oil tank (2) sealed and mounted on an outer wall of one side of the casing (1); a hydraulic circulation pump (4) is mounted on the bottom of the casing (1), and a start switch (5) is mounted on the top of the hydraulic circulation pump (4); a central valve plate (7) is mounted on the oil inlet of the hydraulic circulation pump (4), and an oil suction pipe (401) and an oil return pipe (402) extending into the oil tank (2) are mounted on an outer wall of one side of the central valve plate (7); the oil suction pipe (401) and the oil inlet of the hydraulic circulation pump (4) are communicated with each other; an oil outlet (701) and an oil return port (702) are arranged on an outer wall of a side of the central valve plate (7) away from the oil tank (2); and an oil return port (702) and an oil return port (703) are arranged on the outer wall of the side of the central valve plate (7) away from the oil tank (2). The oil outlet (702) is interconnected with the oil return pipe (402), the inlet of the oil outlet (701) is interconnected with the oil outlet of the hydraulic circulation pump (4), at least two electromagnetic valves (8) that are connected in series with each other are installed on the inner wall of one side of the casing (1), and the two ends of the surface of the electromagnetic valve (8) are respectively installed with an oil discharge interface (801) and an oil return interface (802) connected to the joint of the hydraulic cylinder of the flying wing vehicle, and a starting key switch (6) is installed on one side of the surface of the casing (1), the output end of the starting key switch (6) is electrically connected to the input end of the starting switch (5), and the output end of the starting switch (5) is electrically connected to the input end of the hydraulic circulation pump (4).

2. A hydraulic overflow device for a flying wing vehicle according to claim 1, characterized in that: The outlet of the oil outlet (701) is in communication with the inlet of the solenoid valve (8), and the liquid return port of the solenoid valve (8) is in communication with the oil return port (702).

3. A hydraulic overflow device for a flying wing vehicle according to claim 1, characterized in that: One end of the oil suction pipe (401) extends to the interior of the oil tank (2) and is equipped with a filter.

4. A hydraulic overflow device for a flying wing vehicle according to claim 1, characterized in that: An oil filling interface (103) is installed on the inner wall of one side of the casing (1), and one end of the oil filling interface (103) extends to the interior of the oil tank (2).

5. A hydraulic overflow device for a flying wing vehicle according to claim 4, characterized in that: A relief valve unit (9) is installed on one side of the top end of the central valve plate (7), and the output port of the relief valve unit (9) is connected to the oil injection interface (103) via a hose.

6. A hydraulic overflow device for a flying wing vehicle according to claim 4, characterized in that: The housing (1) is composed of a rectangular open shell (101) and a right-angle cover plate (102) which are bolted to each other to form a cubic shell, and the other end of the oil filling interface (103) extends to the interior of the rectangular open shell (101).

7. The hydraulic overflow device for a flying wing vehicle according to claim 1, characterized in that: A rubber sealing ring (201) is installed at an opening position on one side of the oil tank (2) close to the casing (1), and a base frame (3) is fixed on both sides of the bottom end of the casing (1).

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