A synchronous hydraulic system for an electrically powered rapid runway disengagement device

Abstract

The application provides a synchronous hydraulic system for an electric quick runway escape device, comprising the electric quick runway escape device, and first and second oil cylinders symmetrically hinged on two sides of the electric quick runway escape device; an oil tank is installed on the electric quick runway escape device, the oil tank is connected with an oil pump, the oil pump is connected with a motor, an oil outlet of the oil pump is connected with an electromagnetic reversing valve through a one-way valve, the electromagnetic reversing valve is connected with the first and second oil cylinders through a hydraulic control one-way valve group, oil cylinder cavities of the first and second oil cylinders are connected with a return oil pipe through electromagnetic valves, and the return oil pipe is connected with the oil tank. The hydraulic system can be matched with the electric quick runway escape device for use, and is further used for driving the action of a turnover wheel, so as to ensure the normal operation of the electric quick runway escape device.

Description

Technical Field

[0001] This invention relates to the field of aviation equipment manufacturing, and in particular to a synchronous hydraulic system for an electrically powered rapid runway detachment device. Background Technology

[0002] During training or maintenance of fighter jets, fighter-bombers, trainer aircraft, etc., the military may encounter situations where the wheel hubs or wheels lock up, preventing the aircraft from taxiing or towing. In such cases, appropriate equipment is needed to quickly remove the aircraft from the runway to ensure the normal flight of the remaining aircraft.

[0003] Based on this, an electric rapid runway detachment device was designed. This electric rapid runway detachment device has two sets of tilting wheels, which are driven by hydraulic cylinders. In order to realize the tilting control of the tilting wheels, a matching hydraulic system needs to be designed. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a synchronous hydraulic system for an electric rapid runway detachment device. This hydraulic system can be used in conjunction with the electric rapid runway detachment device to drive the rotation wheel and ensure the normal operation of the electric rapid runway detachment device.

[0005] To achieve the above-mentioned technical features, the present invention aims to provide a synchronous hydraulic system for an electric rapid runway detachment device, comprising an electric rapid runway detachment device, wherein a first hydraulic cylinder and a second hydraulic cylinder are symmetrically hinged on both sides of the electric rapid runway detachment device; an oil tank is installed on the electric rapid runway detachment device, the oil tank is connected to an oil pump, the oil pump is connected to a motor, the oil pump outlet is connected to a solenoid directional valve through a check valve, the solenoid directional valve is connected to the first and second hydraulic cylinders through a hydraulically controlled check valve group, the cylinder chambers of the first and second hydraulic cylinders are connected to a return oil pipe through a solenoid valve, and the return oil pipe is connected to the oil tank.

[0006] Preferably, the electric rapid runway detachment device is equipped with a head caster wheel at the bottom of its head.

[0007] Preferably, the piston rod ends of the first and second cylinders are hinged to the top of the crank arm, the middle part of the crank arm is hinged to the electric rapid runway detachment device by a pin, and a wheel frame is provided at the bottom of the crank arm, with a tail wheel installed on the wheel frame via a wheel axle.

[0008] Preferably, an oil filter is provided between the oil tank and the oil pump.

[0009] Preferably, the hydraulic control check valve assembly includes a first hydraulic control check valve and a second hydraulic control check valve arranged in parallel. The first hydraulic control check valve is connected to the rodless chamber of the first cylinder and the second cylinder, and the second hydraulic control check valve is connected to the rod chamber of the first cylinder and the second cylinder.

[0010] Preferably, a safety valve is installed between the one-way valve and the solenoid directional valve, and the safety valve is connected to the return oil pipe.

[0011] Preferably, a transmission rod is hinged to the back of each of the two curved arms, and the other end of the transmission rod is hinged to the swing arm. The two swing arms are fixed to both ends of the synchronous shaft, and the synchronous shaft is rotatably mounted on the electric rapid runway detachment device.

[0012] The present invention has the following beneficial effects: 1. This hydraulic system can be used in conjunction with the electric rapid runway detachment device to drive the rotation wheel and ensure the normal operation of the electric rapid runway detachment device.

[0013] 2. The aforementioned head casters are used to provide rolling support for the bottom of the head of the electric rapid runway detachment device, so that the device can be towed and moved by a tractor.

[0014] 3. With the above installation structure, when it is necessary to lift the electric quick runway detachment device, the first and second hydraulic cylinders are activated. The first and second hydraulic cylinders drive the crank arm, which rotates around the pin shaft, thereby lifting the tail wheel and supporting it on the ground. This allows the entire electric quick runway detachment device to be lifted off the ground, so that it can be towed and moved by a tractor.

[0015] 4. The oil filter described above can be used to filter the oil inside the oil tank, thereby ensuring the cleanliness of the oil.

[0016] 5. The safety valve described above can be used to limit the oil pressure in the hydraulic system, thereby ensuring the safety of the system. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the hydraulic system of the present invention.

[0019] Figure 2 This is a three-dimensional view of the electric rapid runway detachment device of the present invention.

[0020] Figure 3 This is a first-person three-dimensional view of the internal structure of the electric rapid runway detachment device of the present invention.

[0021] Figure 4 This is a two-dimensional view of the internal second perspective of the electric rapid runway detachment device of the present invention.

[0022] In the diagram: 1. Electric rapid runway detachment device; 2. Head caster wheel; 3. First hydraulic cylinder; 4. Pin shaft; 5. Crank arm; 6. Wheel frame; 7. Tail wheel; 8. Motor; 9. Hydraulic check valve assembly; 10. Oil tank; 11. Transmission rod; 12. Second hydraulic cylinder; 13. Synchronous shaft; 14. Swing arm; 15. Oil filter; 16. Oil pump; 17. Check valve; 18. Safety valve; 19. Solenoid directional valve; 20. First hydraulic check valve; 21. Return oil pipe; 22. Solenoid valve; 23. Second hydraulic check valve. Detailed Implementation

[0023] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0024] See Figure 1-4 A synchronous hydraulic system for an electrically powered rapid runway detachment device includes an electrically powered rapid runway detachment device 1. A first hydraulic cylinder 3 and a second hydraulic cylinder 12 are symmetrically hinged to both sides of the device. An oil tank 10 is mounted on the device 1, connected to an oil pump 16, which in turn is connected to a motor 8. The oil outlet of the pump 16 is connected to a solenoid directional valve 19 via a check valve 17. The solenoid directional valve 19 is connected to the first hydraulic cylinder 3 and the second hydraulic cylinder 12 via a hydraulically controlled check valve group 9. The cylinder chambers of the first hydraulic cylinder 3 and the second hydraulic cylinder 12 are connected to a return oil pipe 21 via a solenoid valve 22. The return oil pipe 21 is connected to the oil tank 10. This hydraulic system can be used in conjunction with the electrically powered rapid runway detachment device to drive the tilting wheel and ensure the normal operation of the device. In the specific working process, the motor 8 and the oil pump 16 serve as the system power source, providing a stable and reliable pressure source for the system, thereby providing hydraulic power for the first oil cylinder 3 and the second oil cylinder 12, and driving the first oil cylinder 3 and the second oil cylinder 12 to move. The first oil cylinder 3 and the second oil cylinder 12 drive the crank arm 5, and the crank arm 5 drives the tail wheel 7 to flip, thereby lifting the electric rapid runway detachment device 1.

[0025] Furthermore, a head caster 2 is installed at the bottom of the head of the electric rapid runway detachment device 1. The head caster 2 is used to provide rolling support for the bottom of the head of the electric rapid runway detachment device 1, so as to facilitate subsequent towing and movement of the electric rapid runway detachment device 1 by a towing vehicle.

[0026] Furthermore, the piston rod ends of the first cylinder 3 and the second cylinder 12 are hinged to the top of the crank arm 5. The middle part of the crank arm 5 is hinged to the electric rapid runway detachment device 1 via a pin 4. A wheel frame 6 is provided at the bottom of the crank arm 5, and a tail wheel 7 is mounted on the wheel frame 6 via an axle. With the above installation structure, when it is necessary to lift the electric rapid runway detachment device 1, the first cylinder 3 and the second cylinder 12 are activated. The first cylinder 3 and the second cylinder 12 drive the crank arm 5, which rotates around the pin 4, thereby lifting the tail wheel 7 and supporting it on the ground. This allows the entire electric rapid runway detachment device 1 to be lifted off the ground, so that it can be towed and moved by a tractor.

[0027] Furthermore, an oil filter 15 is provided between the oil tank 10 and the oil pump 16. The oil filter 15 can be used to filter the oil inside the oil tank 10, thereby ensuring the cleanliness of the oil.

[0028] Furthermore, the hydraulically controlled check valve assembly 9 includes a first hydraulically controlled check valve 20 and a second hydraulically controlled check valve 23 arranged in parallel. The first hydraulically controlled check valve 20 is connected to the rodless chamber of the first cylinder 3 and the second cylinder 12, and the second hydraulically controlled check valve 23 is connected to the rod chamber of the first cylinder 3 and the second cylinder 12. The hydraulically controlled check valve assembly 9 described above enables oil inlet control for the first cylinder 3 and the second cylinder 12.

[0029] Furthermore, a safety valve 18 is installed between the one-way valve 17 and the solenoid directional valve 19, and the safety valve 18 is connected to the return oil pipe 21. The safety valve 18 is used to limit the oil pressure in the hydraulic system, thereby ensuring system safety. The one-way valve 17 ensures the one-way flow of oil.

[0030] Furthermore, transmission rods 11 are hinged to the back of the two curved arms 5 on both sides, and the other end of the transmission rods 11 is hinged to the swing arms 14. The two swing arms 14 are fixed to both ends of the synchronous shaft 13, which is rotatably mounted on the electric rapid runway detachment device 1. The transmission rods 11 can be used to synchronously drive the swing arms 14, which in turn drive the synchronous shaft 13 to rotate synchronously, thereby realizing the synchronous flipping action of the two curved arms 5, thus ensuring the synchronicity and safety of the lifting process.

[0031] Furthermore, electromagnetic reversing can be achieved through electromagnetic reversing valve 19, used to switch between the system's lifting and lowering operating modes.

[0032] The working process and principle of this utility model: In the specific operation of the aforementioned synchronous hydraulic system, when the entire electric rapid runway detachment device 1 needs to be lifted, the motor 8 is started, which drives the oil pump 16 to supply oil to the system. Then, the solenoid directional valve 19 is used to reverse the direction, and the solenoid directional valve 19 and the hydraulic control check valve group 9 synchronously drive the first oil cylinder 3 and the second oil cylinder 12. The first oil cylinder 3 and the second oil cylinder 12 then drive the crank arm 5, which drives the tail wheel 7 to rotate. The tail wheel 7 is then supported on the ground, and together with the head universal wheel 2, the entire electric rapid runway detachment device 1 is rolled and supported on the ground. During the rotation of the tail wheel 7, the crank arm 5 synchronously drives the transmission rod 11, which in turn drives the swing arm 14. The swing arm 14 then drives the synchronous shaft 13 to rotate synchronously, thus realizing the synchronous rotation of the two crank arms 5.

Claims

1. A synchronous hydraulic system for an electrically powered rapid runway detachment device, characterized in that, The device includes an electric rapid runway detachment device (1), on which a first hydraulic cylinder (3) and a second hydraulic cylinder (12) are symmetrically hinged on both sides. An oil tank (10) is installed on the electric rapid runway detachment device (1). The oil tank (10) is connected to an oil pump (16). The oil pump (16) is connected to a motor (8). The oil outlet of the oil pump (16) is connected to a solenoid directional valve (19) through a one-way valve (17). The solenoid directional valve (19) is connected to the first hydraulic cylinder (3) and the second hydraulic cylinder (12) through a hydraulically controlled one-way valve group (9). The cylinder chambers of the first hydraulic cylinder (3) and the second hydraulic cylinder (12) are connected to the return oil pipe (21) through a solenoid valve (22). The return oil pipe (21) is connected to the oil tank (10).

2. The synchronous hydraulic system for an electrically powered rapid runway detachment device according to claim 1, characterized in that: The electric rapid runway detachment device (1) is equipped with a head caster wheel (2) at the bottom of its head.

3. The synchronous hydraulic system for an electric rapid runway detachment device according to claim 1, characterized in that: The piston rod ends of the first cylinder (3) and the second cylinder (12) are hinged to the top of the crank arm (5). The middle part of the crank arm (5) is hinged to the electric rapid runway detachment device (1) through the pin (4). The bottom end of the crank arm (5) is provided with a wheel frame (6), and a tail wheel (7) is installed on the wheel frame (6) through the wheel axle.

4. The synchronous hydraulic system for an electric rapid runway detachment device according to claim 1, characterized in that: An oil filter (15) is provided between the oil tank (10) and the oil pump (16).

5. The synchronous hydraulic system for an electric rapid runway detachment device according to claim 1, characterized in that: The hydraulic control check valve group (9) includes a first hydraulic control check valve (20) and a second hydraulic control check valve (23) arranged in parallel. The first hydraulic control check valve (20) is connected to the rodless chamber of the first cylinder (3) and the second cylinder (12), and the second hydraulic control check valve (23) is connected to the rod chamber of the first cylinder (3) and the second cylinder (12).

6. The synchronous hydraulic system for an electrically powered rapid runway detachment device according to claim 1, characterized in that: A safety valve (18) is installed between the one-way valve (17) and the solenoid directional valve (19), and the safety valve (18) is connected to the return oil pipe (21).

7. The synchronous hydraulic system for an electric rapid runway detachment device according to claim 3, characterized in that: The back of the curved arms (5) on both sides are respectively hinged with transmission rods (11), and the other end of the transmission rods (11) is hinged with the swing arms (14). The swing arms (14) on both sides are fixed at both ends of the synchronous shaft (13), and the synchronous shaft (13) is rotatably mounted on the electric rapid runway detachment device (1).

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