Missile elevator 4 cylinder loading device

Abstract

The application relates to the field of spaceflight, and discloses a 4-cylinder loading device of a missile lifting machine, which comprises a loading support frame, the inside of the loading support frame is provided with four groups of hydraulic oil cylinders, the four groups of hydraulic oil cylinders are arranged in a matrix at each corner of the inside of the loading support frame, the inside of the loading support frame is provided with an electric control system, the electric control system is electrically connected with a hydraulic system, both sides of the loading support frame are hingedly provided with movable doors, the inside of the loading support frame is provided with a valve group connected with the hydraulic oil cylinders, the inside of the loading support frame is provided with a cooling fan, and the inside of the loading support frame is provided with an oil tank system connected with the valve group.

Description

TECHNICAL FIELD

[0001] The application relates to the field of spaceflight, in particular to a 4-cylinder loading device of a missile hoist. BACKGROUND

[0002] At present, the calibration and detection of a missile hoist mainly use weight detection, the load range of the hoist is 10-140 tons, and the traditional method is to use sand with the same weight to replace the weights, which has the defects of long detection period, high labor cost, large occupied space and inconvenient operation. The 2-cylinder loading device has the problems of poor stability of an external oil source, poor synchronism during rising, large impact during pressure relief, and inconvenient operation of a fixed operation box, and therefore the 4-cylinder loading device of the missile hoist is provided. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the defects of the prior art, the application provides a 4-cylinder loading device of a missile hoist, which solves the above problems.

[0005] (II) Technical scheme

[0006] In order to achieve the above purpose, the application provides the following technical scheme: a 4-cylinder loading device of a missile hoist, comprising a loading support frame, four groups of hydraulic oil cylinders are arranged in the inside of the loading support frame, and the four groups of hydraulic oil cylinders are arranged at each corner of the inside of the loading support frame in a matrix arrangement, an electric control system is arranged in the inside of the loading support frame, the electric control system is electrically connected with a hydraulic system, movable doors are hingedly connected to the two sides of the loading support frame, a valve group connected with the hydraulic oil cylinders is arranged in the inside of the loading support frame, a cooling fan is arranged in the inside of the loading support frame, and an oil tank system connected with the valve group is arranged in the inside of the loading support frame.

[0007] Preferably, the electric control system comprises an electric control cabinet and a hand-operated box, the hand-operated box is fixedly installed on the electric control cabinet, and the electric control cabinet is fixedly installed in the inside of the loading support frame.

[0008] Preferably, the oil tank system comprises a hydraulic oil tank, an accumulator one, a liquid level gauge, a high-pressure gear pump, a motor, a bell-shaped cover and a shaft coupling, the accumulator one is fixedly installed on the outside of the hydraulic oil tank, the motor is fixedly installed on the outside of the hydraulic oil tank, the output end of the motor extends into the inside of the hydraulic oil tank, the output end of the motor is connected with the accumulator one through the bell-shaped cover and the shaft coupling, the liquid level gauge is installed on the hydraulic oil cylinder, and a drain ball valve is fixedly installed on the inlet end of the hydraulic oil cylinder.

[0009] Preferably, the hydraulic oil tank is fixedly provided with an oil suction ball valve, the oil suction ball valve and the output end of the high-pressure gear pump are connected with a valve group through a connecting assembly, the connecting assembly comprises a radiator and an oil pressure filter, the oil pressure filter is connected with an oil return filter, and the oil pressure filter is connected with the high-pressure gear pump.

[0010] Preferably, the valve group comprises a left valve group, a right valve group, a one-way valve, an electric proportional overflow valve and an overflow valve, the left valve group is connected with the right valve group, the electric proportional overflow valve is connected with the connecting pipeline between the left valve group and the right valve group, the output ends of the radiator and the oil pressure filter are connected with the connecting pipeline between the left valve group and the right valve group, and the connecting pipeline of the radiator and the oil pressure filter is respectively provided with the one-way valve and the electric proportional overflow valve.

[0011] Preferably, the output end of the overflow valve is connected with a pressure measuring connector, the output end of the pressure measuring connector is connected with a pressure measuring line, and the output end of the pressure measuring line is connected with a pressure gauge.

[0012] Preferably, the right valve group comprises a three-position four-way electromagnetic reversing valve one, a superimposed overflow valve, a double one-way throttle valve and two normally closed electromagnetic stop valves, the three-position four-way electromagnetic reversing valve one, the superimposed overflow valve and the double one-way throttle valve are connected with each other, the double one-way throttle valve is provided with the two normally closed electromagnetic stop valves at the connecting end, the connecting end of the three-position four-way electromagnetic reversing valve one is connected with the left valve group, and the connecting pipeline of the two is provided with the two normally closed electromagnetic stop valves.

[0013] Preferably, the left valve group comprises a three-position four-way electromagnetic reversing valve two and a hydraulic lock, the three-position four-way electromagnetic reversing valve two is connected with the hydraulic lock, and the three-position four-way electromagnetic reversing valve two is connected with the three-position four-way electromagnetic reversing valve one, the output end of the hydraulic lock is connected with a pressure sensor, the output end of the hydraulic lock is respectively provided with a quick-change connector M and a quick-change connector F, the output ends of the quick-change connector F and the quick-change connector M are connected with a hydraulic oil cylinder, the connecting pipeline of the three-position four-way electromagnetic reversing valve two connected with the hydraulic oil cylinder is provided with an energy accumulator two, and the three-position four-way electromagnetic reversing valve two is connected with the connecting pipeline of the energy accumulator two through the two normally closed electromagnetic stop valves.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the application provides a missile elevator 4-cylinder loading device, which has the following beneficial effects:

[0016] 1. The missile elevator 4-cylinder loading device, the pressure difference equivalent replaces the weight technology improves the deficiency of the traditional elevator calibration method, and the HMI can directly observe the running state of each device. Whether in the aspects of calibration efficiency, economic benefit, performance, remote transmission, convenience and practicality, the application is more superior than the traditional calibration method, and has a good application prospect in the field of missile elevator calibration.

[0017] 2. The missile hoist 4-cylinder loading device is a special four-cylinder loading device specifically designed for hoist calibration. It uses the pressure difference between the rod chamber and rodless chamber of the hydraulic cylinder to replace weights. It has a simple structure, smooth movement, and is easy to disassemble and assemble. It can be adapted to different hoist calibration work as needed. The control system is simple, low cost, and automatically completes the detection action. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the structure of the present invention;

[0019] Fig. 2 This is a schematic diagram of the connection of the present invention;

[0020] Fig. 3 The diagram shows the operation of the solenoid valve under various working conditions.

[0021] In the diagram: 1. Loading support frame; 2. Valve assembly; 3. Hydraulic cylinder; 4. Cooling fan; 5. Motor; 6. Accumulator I; 7. Oil tank; 8. Electrical control cabinet; 9. Manual control box; 10. Movable door; 11. Drain ball valve; 12. Liquid level gauge; 13. Hydraulic oil tank; 14. Return oil filter; 15. Suction ball valve; 16. High-pressure gear pump; 17. Bell-shaped housing and coupling; 18. Radiator; 19. Pressure oil filter; 20. One-way valve. Valves; 21. Electro-proportional relief valve; 22. Relief valve; 23. Three-position four-way solenoid directional valve I; 24. Stacked relief valve; 25. Double one-way throttle valve; 26. Two normally closed solenoid shut-off valves; 27. Quick-connect coupling M; 28. Quick-connect coupling F; 29. ​​Pressure gauge; 30. Pressure gauge line; 31. Pressure test connector; 32. Three-position four-way solenoid directional valve II; 33. Hydraulic lock; 34. Pressure sensor; 35. Accumulator II; 36. High-pressure shut-off valve. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figs. 1-3The utility model provides a kind of missile hoist 4 cylinder loading device, including loading support frame 1, four groups of hydraulic oil cylinder 3 are provided in the inside of loading support frame 1, and four groups of hydraulic oil cylinder 3 are arranged in each corner inside loading support frame 1 in matrix, electric control system is provided in the inside of loading support frame 1, electric control system is electrically connected with hydraulic system, the both sides of loading support frame 1 are hinged with movable door 10, the valve group 2 connected with hydraulic oil cylinder 3 is provided in the inside of loading support frame 1, cooling fan 4 is provided in the inside of loading support frame 1, oil tank system connected with valve group 2 is provided in the inside of loading support frame 1.

[0024] Further, electric control system includes electric control cabinet 8 and hand-operated box 9, hand-operated box 9 is fixedly installed on electric control cabinet 8, and electric control cabinet 8 is fixedly installed in the inside of loading support frame 1.

[0025] Further, oil tank system includes hydraulic oil tank 13, accumulator one 6, liquid level gauge 12, high-pressure gear pump 16, motor 5 and bell cover and shaft coupling 17, accumulator one 6 is fixedly installed on the outside of hydraulic oil tank 13, motor 5 is fixedly installed on the outside of hydraulic oil tank 13, and the output end of motor 5 extends to the inside of hydraulic oil tank 13, and the output end of motor 5 is connected with accumulator one 6 through bell cover and shaft coupling 17, liquid level gauge 12 is installed on hydraulic oil cylinder 3, and drain ball valve 11 is fixedly installed on the inlet end of hydraulic oil cylinder 3.

[0026] Further, drain ball valve 15 is fixedly installed on hydraulic oil tank 13, drain ball valve 15 and the output end of high-pressure gear pump 16 are connected with valve group 2 through connecting assembly, and connecting assembly includes radiator 18 and oil pressure filter 19, oil pressure filter 19 is connected with oil return filter 14, and oil pressure filter 19 is connected with high-pressure gear pump 16.

[0027] Further, valve group 2 includes left valve group, right valve group, one-way valve 20, electric proportional overflow valve 21 and overflow valve 22, left valve group is connected with right valve group, electric proportional overflow valve 21 is connected on the connecting pipeline between left valve group and right valve group, the output end of radiator 18 and oil pressure filter 19 is connected with the connecting pipeline between left valve group and right valve group, and one-way valve 20 and electric proportional overflow valve 21 are respectively arranged on the connecting pipeline of radiator 18 and oil pressure filter 19.

[0028] Further, pressure measuring connector 31 is connected on the output end of overflow valve 22, pressure gauge line 30 is connected on the output end of pressure measuring connector 31, and pressure gauge 29 is connected on the output end of pressure gauge line 30.

[0029] Further, the right valve group includes three-position four-way electromagnetic reversing valve 23, superimposed overflow valve 24, double one-way throttle valve 25 and two normally closed electromagnetic cut-off valves 26, three-position four-way electromagnetic reversing valve 23, superimposed overflow valve 24 and double one-way throttle valve 25 are connected with each other, two normally closed electromagnetic cut-off valves 26 are arranged on the connection end of double one-way throttle valve 25, the connection end of three-position four-way electromagnetic reversing valve 23 is connected with the left valve group, and two normally closed electromagnetic cut-off valves 26 are arranged on the connection pipeline of the two.

[0030] Further, the left valve group includes three-position four-way electromagnetic reversing valve 32 and hydraulic lock 33, three-position four-way electromagnetic reversing valve 32 is connected with hydraulic lock 33, three-position four-way electromagnetic reversing valve 32 is connected with three-position four-way electromagnetic reversing valve 23, pressure sensor 34 is connected on the output end of hydraulic lock 33, quick-change connector M27 and quick-change connector F28 are respectively arranged on the output end of hydraulic lock 33, hydraulic oil cylinder 3 is connected with the output end of quick-change connector F28 and quick-change connector M27, accumulator two 35 is arranged on the connection pipeline of three-position four-way electromagnetic reversing valve 32 connected with hydraulic oil cylinder 3, and three-position four-way electromagnetic reversing valve 32 is connected on the connection pipeline of accumulator two 35 through two normally closed electromagnetic cut-off valves 26.

[0031] Working principle:

[0032] The four-cylinder loading device has six working conditions, low-pressure unloading, rod cavity loading, rodless cavity loading, D grabbing, D releasing and accumulator unloading.

[0033] a. Low-pressure unloading

[0034] All valve groups must not be electrified, the electric proportional overflow valve 21 must not be electrified, and is in an unloading state, the overflow valve 22 safety valve is set to 25 MPa (or some pressure, for example, 21 MPa), and is not in an unloading state.

[0035] At this time, the oil flow direction is: hydraulic oil tank 13→ oil suction ball valve 15→ high-pressure gear pump 16→ oil filter 19→ one-way valve 20→ overflow valve 22→ oil return filter 14→ hydraulic oil tank 13.

[0036] Low-pressure idle program of the hydraulic pump station: the hydraulic pump is started→ the electric proportional overflow valve 21 loses electricity, the overflow valve 22 is set to a safe pressure→ the pressure gauge 29 displays feedback readings (PS1: measures the pump outlet pressure).

[0037] b. Rod cavity loading working condition

[0038] The electric proportional relief valve 21 (YA8) is powered, the three-position four-way electromagnetic reversing valve two 32 (YA2) corresponding to the electromagnet is powered to work in the right position, when the hydraulic cylinder 3 piston is retracted, the size of the electric proportional relief valve 21 is adjusted to change the hydraulic cylinder 3 rod cavity pressure, and the load tension is simulated to be loaded. The oil flow direction is: the hydraulic oil tank 13→the oil suction ball valve 15→the high-pressure gear pump 16→the oil filter 19→the one-way valve 20→the electric proportional relief valve 21→the three-position four-way electromagnetic reversing valve two 32→the hydraulic lock 33→the oil cylinder rod cavity→the oil cylinder rod cavity→the hydraulic lock 33→the three-position four-way electromagnetic reversing valve two 32→the radiator 18→the oil return filter 14→the hydraulic oil tank 13.

[0039] c No rod cavity loading working condition

[0040] The motor is started, the three-position four-way electromagnetic reversing valve one 23 (YA8) is powered, and the three-position four-way electromagnetic reversing valve two 32 (YA1) corresponding to the electromagnet is powered to work in the left position. When the hydraulic cylinder piston is extended, the size of the electric proportional relief valve is adjusted to change the oil cylinder rod cavity pressure, and the load thrust is simulated to be loaded.

[0041] The oil flow direction is: the hydraulic oil tank 13→the oil suction ball valve 15→the high-pressure gear pump 16→the oil filter 19→the one-way valve 20→the electric proportional relief valve 21→the three-position four-way electromagnetic reversing valve two 32→the hydraulic lock 33→the oil cylinder rod cavity→the oil cylinder rod cavity→the hydraulic lock 33→the electromagnetic reversing valve 24→the radiator 18→the oil return filter 14→the hydraulic oil tank 13.

[0042] d Grab D working condition

[0043] The three-position four-way electromagnetic reversing valve one 23 YA4 is powered, the two normally closed electromagnetic cut-off valves 26 YA6 and YA7 are powered, the electric proportional relief valve 21 (YA8) is powered, and the three-position four-way electromagnetic reversing valve one 23 (YA4) corresponding to the electromagnet is powered to work in the right position. The size of the electric proportional relief valve 21 is adjusted to change the hydraulic cylinder rod cavity pressure, and the load D is simulated to be loaded.

[0044] The oil flow direction is: the hydraulic oil tank 13→the oil suction ball valve 15→the high-pressure gear pump 16→the oil filter 19→the one-way valve 20→the electric proportional relief valve 21→the three-position four-way electromagnetic reversing valve one 23→the superimposed relief valve 24→the double one-way throttle valve 25→the oil cylinder rod cavity→the oil cylinder rod cavity→the double one-way throttle valve→the superimposed relief valve 24→the three-position four-way electromagnetic reversing valve one 23→the radiator 18→the oil return filter 14→the hydraulic oil tank 13.

[0045] e D release working condition

[0046] Three position four-way electromagnetic reversing valve one 23YA3 is powered, two normally closed electromagnetic cut-off valve 26YA6, YA7 is powered, electric proportional relief valve 21(YA8) is powered, three position four-way electromagnetic reversing valve one 23(YA3) corresponding electromagnet is powered to work in left position. By adjusting the size of electric proportional relief valve 21, the pressure of the rodless chamber of the hydraulic cylinder is changed, and the load D is simulated to unload.

[0047] The oil flow direction is: hydraulic oil tank 13→ oil suction ball valve 15→ high-pressure gear pump 16→ oil filter 19→ one-way valve 20→ electric proportional relief valve 21→ three position four-way electromagnetic reversing valve one 23→ superimposed relief valve 24→ double one-way throttle valve 25→ cylinder rod chamber→ cylinder rodless chamber→ double one-way throttle valve 25→ superimposed relief valve 24→ three position four-way electromagnetic reversing valve one 23→ radiator 18→ return oil filter 14→ hydraulic oil tank 13.

[0048] f Accumulator unloading condition

[0049] The motor stops working, two normally closed electromagnetic cut-off valve 26YA5 is powered, and the hydraulic system is in pressure relief state. High-pressure cut-off valve 39 is always in open state, and only manual closing is required when necessary maintenance or special working condition does not require energy storage pressure.

[0050] The oil flow direction is: cylinder rod chamber→ cylinder rodless chamber→ hydraulic lock 23→ superimposed relief valve 24→ radiator 18→ return oil filter 14→ hydraulic oil tank 13.

[0051] Accumulator unloading procedure: accumulator unloading start→ high-pressure cut-off valve 39, two normally closed electromagnetic cut-off valve 26YA5 is powered→ pressure gauge 29 displays feedback reading(PS3: measures the pressure of the loaded cylinder rod chamber, the pressure drop is 0)→ accumulator unloading stop, four-cylinder loading device is divided into six working conditions, see Fig. 3 .

[0052] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 4-cylinder loading device for a missile elevator, characterized in that, The system includes a loading support frame (1), which is equipped with four sets of hydraulic cylinders (3) arranged in a matrix at each corner inside the loading support frame (1). The loading support frame (1) is equipped with an electrical control system that is electrically connected to the hydraulic system. Both sides of the loading support frame (1) are hinged with movable doors (10). The loading support frame (1) is equipped with valve groups (2) connected to the hydraulic cylinders (3) inside the loading support frame (1). The loading support frame (1) is equipped with a cooling fan (4) inside the loading support frame (1). The loading support frame (1) is equipped with an oil tank system connected to the valve groups (2). The electrical control system includes an electrical control cabinet (8) and a manual control box (9). The manual control box (9) is fixedly installed on the electrical control cabinet (8), and the electrical control cabinet (8) is fixedly installed inside the loading support frame (1). The oil tank system includes a hydraulic oil tank (13), an accumulator (6), a level gauge (12), a high-pressure gear pump (16), a motor (5), a bell-shaped cover, and a coupling (17). The accumulator (6) is fixedly installed on the outside of the hydraulic oil tank (13). The motor (5) is fixedly installed on the outside of the hydraulic oil tank (13), and the output end of the motor (5) extends into the interior of the hydraulic oil tank (13). The output end of the motor (5) is connected to the accumulator (6) through the bell-shaped cover and the coupling (17). A level gauge (12) is installed on the hydraulic oil tank (13), and a drain ball valve (11) is fixedly installed on the inlet end of the hydraulic oil tank (13). A suction ball valve (15) is fixedly installed on the hydraulic oil tank (13). The suction ball valve (15) and the output end of the high-pressure gear pump (16) are connected to the valve group (2) through a connecting assembly. The connecting assembly includes a radiator (18) and a pressure oil filter (19). The radiator (18) is connected to the return oil filter (14), and the pressure oil filter (19) is connected to the high-pressure gear pump (16). The valve group (2) includes a left valve group, a right valve group, a check valve (20), an electro-proportional relief valve (21), and a relief valve (22). The left valve group is connected to the right valve group. An electro-proportional relief valve (21) is connected to the connecting pipe between the left valve group and the right valve group. The output ends of the radiator (18) and the oil pressure filter (19) are connected to the connecting pipe between the left valve group and the right valve group. A check valve (20) and an electro-proportional relief valve (21) are respectively provided on the connecting pipes of the radiator (18) and the oil pressure filter (19). The overflow valve (22) is connected to a pressure test connector (31), the pressure test connector (31) is connected to a pressure gauge line (30), and the pressure gauge line (30) is connected to a pressure gauge (29). The right valve group includes a three-position four-way solenoid directional valve (23), a superimposed relief valve (24), a double one-way throttle valve (25), and a double normally closed solenoid shut-off valve (26). The three-position four-way solenoid directional valve (23), the superimposed relief valve (24), and the double one-way throttle valve (25) are interconnected. The double one-way throttle valve (25) is provided with a double normally closed solenoid shut-off valve (26) on its connection end. The connection end of the three-position four-way solenoid directional valve (23) is connected to the left valve group, and a double normally closed solenoid shut-off valve (26) is provided on the connection pipeline between the two.

2. The missile elevator 4-cylinder loading device according to claim 1, characterized in that: The left valve group includes a three-position four-way solenoid directional valve two (32) and a hydraulic lock (33). The three-position four-way solenoid directional valve two (32) is connected to the hydraulic lock (33), and the three-position four-way solenoid directional valve two (32) is connected to the three-position four-way solenoid directional valve one (23). A pressure sensor (34) is connected to the output end of the hydraulic lock (33), and quick-connect coupling M (27) and quick-connect coupling F (28) are respectively provided on the output end of the hydraulic lock (33). The output ends of quick-connect coupling F (28) and quick-connect coupling M (27) are connected to the hydraulic cylinder (3). An accumulator two (35) is provided on the connecting pipeline of the three-position four-way solenoid directional valve two (32) and the hydraulic cylinder (3). The three-position four-way solenoid directional valve two (32) is connected to the connecting pipeline of the accumulator two (35) through two normally closed solenoid shut-off valves (26).

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