Airplane latch hook test bed
By designing an aircraft lock hook test bench containing hydraulic system and control system, the problem of hindering repair progress caused by the need to be sent for testing by aircraft lock hook products is solved, and the test at the repair site is realized, which improves efficiency and reduces costs. .
Patent Information
- Application Number
- CN202422623041.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In the prior art, the aircraft lock hook products need to be sent to the outside factory for performance test after repair, resulting in the hindering of the repair progress and the high cost of purchasing external equipment and low economic benefits.
Design an aircraft lock hook test bench including a housing, control system and execution system, adopting hydraulic system and control system, through proportional pressure reducing valves, safety valves, pilot relief valves, accumulators and superimposed double one-way Components such as throttle valves realize the control of the hydraulic system and the function of the test bench, and avoid sending the product to the outside field.
The performance test of aircraft lock hook products is realized at the repair site, which shortens the test time, improves the repair progress, and reduces the cost of equipment procurement.
Smart Images
Figure CN222202903U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of lock hook performance testing, and in particular relates to an aircraft lock hook test bench. Background Art
[0002] In the past, after the aircraft locking hook products were repaired, they had to be sent to external factories for performance testing. The external testing time for each set of products, including the signing of contracts, packaging, delivery, transportation, task assignment, product testing, report issuance, packing, and product return, took two weeks. As the company's annual aircraft repair tasks increased, the long external testing time of the locking hook products seriously restricted the progress of aircraft repairs. According to the survey, it costs about 1 million yuan to purchase a device with the same function. The procurement cost is too high and the economic benefits are too low. Therefore, it is urgent to develop a device that can perform performance tests on the repaired aircraft locking hook products without sending them to external factories to ensure the progress of aircraft repairs. Utility Model Content
[0003] The purpose of this application is to provide an aircraft lock hook test bench to solve the problem in the prior art that aircraft lock hook products must be sent to external factories for performance testing after repair, which affects the progress of aircraft repair.
[0004] The technical solution of the present application is: an aircraft lock hook test bench, comprising a housing, a control system and an execution system; the control system is arranged on the housing, the control system is connected to the execution system, and the control system is used to control the execution system;
[0005] The execution system is a hydraulic system, including a power unit and an oil supply unit; the output end of the oil supply unit is connected to the power unit; the control system includes a proportional pressure reducing valve, a safety valve, a pilot relief valve, an accumulator and a superimposed double one-way throttle valve;
[0006] The proportional pressure reducing valve and accumulator are both installed on the oil supply unit, and the pipeline oil pressure in the hydraulic system is regulated by adjusting the proportional amplifier of the proportional pressure reducing valve; the safety valve is installed on the oil supply unit and is located on the right side of the proportional pressure reducing valve; the pilot overflow valve is installed on the oil supply unit and is located on the right side of the safety valve; the superimposed double one-way throttle valve is installed on the oil supply unit, and is used to control the flow direction of the oil according to the test requirements when the hydraulic system is running.
[0007] Preferably, the control system further comprises an electromagnetic reversing valve, which is installed on the left side of the oil supply unit and can perform reversing control of the oil in the pipeline when the hydraulic system is running.
[0008] Preferably, the oil supply unit includes an oil tank assembly, an oil tank circulating pump, a circulating pump motor, a pressure reducing valve block and a pressure sensor; the oil tank assembly is installed at the bottom of the shell and is used to store hydraulic oil; the oil tank circulating pump is connected to the oil tank assembly and is used to extract the hydraulic oil in the oil tank assembly; the circulating pump motor is installed above the oil tank assembly and is connected to the oil tank circulating pump and is used to provide power for the oil tank circulating pump; a water-cooled radiator is installed on the output end of the oil tank assembly, and the water-cooled radiator is installed at the bottom of the shell and is used to continuously cool the oil in the pipeline when the hydraulic system is running.
[0009] Preferably, a valve block bracket is provided at a position of the shell corresponding to the output end of the oil tank circulation pump, and the valve block bracket is located in the middle position of the bottom of the shell; the reversing valve block is installed on the valve block bracket, and is formed by overall CNC processing, and is used to install an electromagnetic reversing valve and a superimposed double one-way throttle valve; the pressure reducing valve block is installed on the valve block bracket; a sensor bracket is provided at a position of the bottom of the shell corresponding to the oil supply unit pipeline, the sensor bracket is made of carbon steel, and the surface is sprayed with plastic, and the pressure sensor is installed on the sensor bracket; a digital pressure gauge is provided on the upper panel of the shell, which is used to display the output pressure values of each pipeline in the execution system; the pressure sensor is connected to the digital pressure gauge through a wire, and is used to detect the oil pressure of each line in the execution system.
[0010] Preferably, the power unit includes a main pump motor, an internal gear pump, a high-pressure filter, a sampling valve and an air-cooled radiator; the main pump motor is installed at the bottom of the shell and is connected to the oil tank circulation pump of the oil supply unit, which is used to extract the hydraulic oil in the oil supply unit; the internal gear pump is installed on the coupling of the main pump motor, which is used to supply pressure to the entire hydraulic system; the high-pressure filter is installed at the bottom of the shell and is connected to the output end of the internal gear pump through a pipeline, which is used to filter the oil in the hydraulic system.
[0011] Preferably, the sampling valve is arranged on the high-pressure filter and is connected to the inside of the high-pressure filter. The sampling valve can regularly extract the hydraulic oil filtered by the high-pressure filter to judge the quality of the filtered hydraulic oil; the air-cooled radiator is installed at the bottom of the shell and is used for cooling the oil in the oil tank; the air-cooled radiator is installed at the bottom of the shell and is arranged corresponding to the oil tank, which is used to cool the oil in the oil tank assembly.
[0012] Preferably, the housing is formed by bending and welding a steel plate, and is spray-coated as a whole. The housing is provided with an indicator light, a switch, a plug interface, an alarm and an electric control box;
[0013] The indicator light is installed on the upper panel of the housing, and is used to indicate the status of the various functions in the control system and the execution system and the status of the tested product; the switch is a three-stage switch, installed on the upper panel of the housing, and is used to control the on and off of various functions in the system; the plug interface is a beacon plug interface, installed on the upper panel of the housing, and is used to connect the end switch mechanism on the product during the test;
[0014] The alarm is installed on the upper panel of the shell and is used to give an alarm when an abnormal indicator occurs during the operation of the test bench; the electric control box is installed above the right side plate of the shell and is used to load and protect electrical components. The input and output wires of the electric control box are connected with quick connectors and the ends are crimped with cold-pressed terminals.
[0015] The aircraft lock hook test bench of the present application, by setting up a control system and an execution system, does not need to send the aircraft lock hook product to the field. It only needs to place the product on a fixed tooling, and the load on the product is applied through the execution system. The load force and direction of the execution system are controlled through the control system. Finally, the performance can be tested by turning the corresponding switch knob, thereby effectively ensuring the repair progress of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.
[0017] Figure 1 This is the main view of the overall structure of this application;
[0018] Figure 2 This is a side view of the overall structure of this application;
[0019] Figure 3 This is a schematic diagram of the power unit structure of this application;
[0020] Figure 4 This is a schematic diagram of the oil supply unit structure for this application;
[0021] Figure 5 This is the main view of the control system structure of this application;
[0022] Figure 6 This is a side view of the control system structure of this application.
[0023] 1. Shell; 2. Digital pressure gauge; 3. Indicator light; 4. Switch; 5. Plug interface; 6. Alarm; 7. Electric control box; 8. Check valve; 9. Air-cooled radiator; 10. Sampling valve; 11. High-pressure filter; 12. Internal gear pump; 13. Main pump motor; 14. Pressure sensor; 15. Sensor bracket; 16. Reversing valve block; 17. Valve block bracket; 18. Pressure reducing valve block; 19. Oil tank circulating pump; 20. Circulating pump motor; 21. Oil tank assembly; 22. Water-cooled radiator; 23. Proportional pressure reducing valve; 24. Safety valve; 25. Pilot overflow valve; 26. Accumulator; 27. Solenoid reversing valve; 28. Superimposed double check throttle valve. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] An aircraft lock hook test bench, such as Figure 1-Figure 2 As shown, it includes a housing 1, a control system and an execution system. The control system is arranged on the housing 1, and the control system is connected to the execution system, and the control system is used to control the execution system.
[0026] The housing 1 is formed by welding after bending the steel plate and is sprayed with plastic as a whole. It is used to load and protect electrical and hydraulic components. The housing 1 is provided with an indicator light 3, a switch 4, a plug interface 5, an alarm 6 and an electric control box 7.
[0027] The indicator light 3 is installed on the upper panel of the housing 1, and is used to indicate the status of the various functions in the control system and the execution system and the status of the tested product. The switch 4 is a three-stage switch, installed on the upper panel of the housing 1, and is used to control the on and off of various functions in the system. The plug interface 5 is a beacon plug interface, installed on the upper panel of the housing 1, and is used to connect the end switch mechanism on the product during the test.
[0028] The alarm 6 is installed on the upper panel of the shell 1, and is used to give an alarm when an abnormal indicator appears during the operation of the test bench; the electric control box 7 is installed above the right side plate of the shell 1, and is used to load and protect electrical components. The box is made of carbon steel with a protection level of IP44. The electrical components in the box are reasonably arranged, the incoming and outgoing wires of the cable are connected with quick connectors, the ends are crimped with cold-pressed terminals, and are all marked with wire number tubes.
[0029] The execution system is a hydraulic system, including a power unit and an oil supply unit. The output end of the oil supply unit is connected to the power unit.
[0030] like Figure 3-Figure 4 As shown, the oil supply unit includes an oil tank assembly 21, an oil tank circulation pump 19, a circulation pump motor 20, a pressure reducing valve block 18 and a pressure sensor 14. The oil tank assembly 21 is installed at the left rear of the bottom of the housing 1 and is used to store hydraulic oil. The oil tank circulation pump 19 is connected to the oil tank assembly 21, and its rated output pressure is 2.5MPa, which is used to pump out the hydraulic oil in the oil tank assembly 21. The circulation pump motor 20 is installed above the oil tank assembly 21 and is connected to the oil tank circulation pump 19. The motor power is 3.5kw, which is used to provide power for the oil tank circulation pump 19.
[0031] A water-cooled radiator 22 is installed on the output end of the oil tank assembly 21. The water-cooled radiator 22 is installed on the left vertical plate at the bottom of the housing 1 and is used to cool the oil in the pipeline when the hydraulic system is running.
[0032] A valve block bracket 17 is provided at the position of the housing 1 corresponding to the output end of the oil tank circulation pump 19. The valve block bracket 17 is located in the middle of the bottom of the housing 1. The frame is made of carbon steel and the surface is sprayed with plastic. It is used to place the reversing valve block 16 and the pressure reducing valve block 18. The reversing valve block 16 is installed on the left side of the valve block bracket 17. The reversing valve block 16 is made of 316 stainless steel and is used to install the electromagnetic reversing valve 27 and the superimposed double one-way throttle valve 28. The pressure reducing valve block 18 is installed on the right side of the valve block bracket 17. The valve block is made of 316 stainless steel. The reversing valve block 16 is integrally formed by CNC machining and is used to install a proportional pressure reducing valve, a safety valve, a pilot overflow valve and an accumulator.
[0033] A sensor bracket 15 is provided at the position corresponding to the oil supply unit pipeline at the right rear of the bottom of the housing 1. The sensor bracket 15 is made of carbon steel and has a plastic spray treatment on the surface. The pressure sensor 14 is installed on the sensor bracket 15. A digital pressure gauge 2 is provided on the upper panel of the housing 1 to display the output pressure value of each pipeline in the execution system; the pressure sensor 14 is connected to the digital pressure gauge 2 through a wire to detect the oil pressure of each line in the execution system.
[0034] The power unit includes a main pump motor 13, an internal gear pump 12, a high-pressure filter 11, a sampling valve 10 and an air-cooled radiator 9. The main pump motor 13 is installed at the right front of the bottom of the housing 1 and is connected to the oil tank circulation pump 19 of the oil supply unit. The motor power is 11KW, which is used to extract the hydraulic oil in the oil supply unit and provide power for the internal gear pump 12; the internal gear pump 12 is installed on the coupling of the main pump motor 13, and the rated output pressure of the gear pump is 31.5MPa, which is used to supply pressure to the entire hydraulic system; the high-pressure filter 11 is installed at the middle front of the bottom of the housing 1 and is connected to the output end of the internal gear pump 12 through a pipeline. A filter element with an accuracy of 5μm is selected to filter the oil in the hydraulic system to ensure its cleanliness. A one-way valve 8 is also provided at the upper right oil inlet of the high-pressure filter 11. The one-way valve 8 has a maximum pressure resistance of 40MPa to ensure that the output oil does not flow back.
[0035] The sampling valve 10 is arranged on the high-pressure filter 11 and is connected to the inside of the high-pressure filter 11. The sampling valve 10 can regularly extract the hydraulic oil filtered by the high-pressure filter 11 to judge the quality of the filtered hydraulic oil. When the quality of the hydraulic oil does not meet the requirements, the high-pressure filter 11 is replaced or repaired. The air-cooled radiator 9 is installed at the left front of the bottom of the shell 1 and is used to cool the oil in the oil tank. The air-cooled radiator 9 is installed at the left front of the bottom of the shell 1. The air-cooled radiator 9 corresponds to the oil tank and is used to cool the oil in the oil tank assembly 21.
[0036] like Figure 5-Figure 6 As shown, the control system includes a proportional pressure reducing valve 23, a safety valve 24, a pilot relief valve 25, an accumulator 26 and a superimposed double one-way throttle valve 28. The proportional pressure reducing valve 23 and the accumulator 26 are both installed on the oil supply unit, and the regulation of the pipeline oil pressure in the hydraulic system is achieved by adjusting the proportional amplifier of the proportional pressure reducing valve 23. The safety valve 24 is installed on the pressure reducing valve block 18 and is located on the right side of the proportional pressure reducing valve 23. It is a safety device in the hydraulic system. Only when the safety valve 24 is in the open state, the hydraulic system will have oil pressure input. The pilot relief valve 25 is installed on the pressure reducing valve block 18 and is located on the right side of the safety valve 24. It is used to adjust the oil pressure input through the main pump.
[0037] The accumulator 26 is arranged on the pressure reducing valve block 18 and is located on the right side of the pilot relief valve 25, and is used to keep the pressure in the hydraulic system constant. The electromagnetic reversing valve 27 is installed on the left side of the reversing valve block 16. The electromagnetic reversing valve 27 can control the direction of the oil in the pipeline when the hydraulic system is running, so as to realize different lock hook performance tests. The superimposed double one-way throttle valve 28 is installed on the reversing valve block 16 and is located below the electromagnetic reversing valve 27, and is used to control the flow direction of the oil in the electromagnetic reversing valve 27 according to the test requirements when the hydraulic system is running.
[0038] When conducting an aircraft lock hook experiment, first connect the power cord to the distribution cabinet. After inputting 380V AC, turn the operation panel system "power on / off switch" to power on, the system power indicator light 3 lights up, the system is powered on, turn the main pump motor 13 "start / stop switch" to start, the main pump motor 13 operation indicator light 3 lights up, the internal gear pump 12 starts working, turn the "circulation start / stop switch" to start, the circulation operation indicator light 3 lights up, the oil tank circulation pump 19 starts, and the air-cooled radiator 9 starts; the execution system starts working.
[0039] Place the test product on a fixed tooling, adjust the product installation position as needed, connect the cylinder extension pressure oil pipe to the "extend" pipe joint of the tank assembly 21, connect the cylinder retract pressure oil pipe to the "retract" pipe joint of the tank assembly 21, connect the product extension pressure oil pipe to the product's "lowering" pipe joint, connect the product retract pressure oil pipe to the product's "lifting" pipe joint, connect the product's pressure-resistant pressure oil pipe to the product's "emergency" pipe joint, connect the end switch mechanism to the plug interface 5 with a cable, and the product locking status indicator light 3 is on.
[0040] After confirming that all oil pipes are connected reliably, turn on the water source, start the water cooling radiator 22, turn the power on / off switch of the safety valve 24 to power on, the safety valve 24 starts, and the hydraulic system is pressurized.
[0041] According to the product test requirements, various functions are linked by operating the switch knobs to pass pressure to different oil circuits to meet the product test requirements. All pressure values during the test can be read on the digital pressure gauge 2. After the test, ensure that each switch knob is turned to the closed state.
[0042] By setting up the control system and the execution system, there is no need to send the aircraft lock hook product to the field. It is only necessary to place the product on a fixed tooling, apply the product load through the execution system, and control the load force and direction of the execution system through the control system. Finally, the performance can be tested by turning the corresponding switch 4 knob, thereby effectively ensuring the repair progress of the aircraft.
[0043] Finally, it should be noted that: the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0044] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
Claims
1. An aircraft lock hook test bench, characterized in that: It comprises a housing (1), a control system and an execution system; the control system is arranged on the housing (1), the control system is connected to the execution system, and the control system is used to control the execution system; The execution system is a hydraulic system, comprising a power unit and an oil supply unit; the output end of the oil supply unit is connected to the power unit; the control system comprises a proportional pressure reducing valve (23), a safety valve (24), a pilot overflow valve (25), an accumulator (26) and a superimposed double one-way throttle valve (28); The proportional pressure reducing valve (23) and the accumulator (26) are both mounted on the oil supply unit, and the oil pressure in the pipeline of the hydraulic system is regulated by adjusting the proportional amplifier of the proportional pressure reducing valve (23); the safety valve (24) is mounted on the oil supply unit and is located on the right side of the proportional pressure reducing valve (23); the pilot relief valve (25) is mounted on the oil supply unit and is located on the right side of the safety valve (24); the superimposed double one-way throttle valve (28) is mounted on the oil supply unit and is used to control the flow direction of the oil according to test requirements when the hydraulic system is running.
2. The aircraft hook test bench according to claim 1, characterized in that: The control system further comprises an electromagnetic reversing valve (27), which is installed on the left side of the oil supply unit. The electromagnetic reversing valve (27) can control the reversing of oil in the pipeline when the hydraulic system is running.
3. The aircraft hook test bench according to claim 1, characterized in that: The oil supply unit comprises an oil tank assembly (21), an oil tank circulation pump (19), a circulation pump motor (20), a pressure reducing valve block (18) and a pressure sensor (14); the oil tank assembly (21) is mounted at the bottom of the housing (1) and is used to store hydraulic oil; the oil tank circulation pump (19) is connected to the oil tank assembly (21) and is used to extract the hydraulic oil in the oil tank assembly (21); the circulation pump motor (20) is mounted above the oil tank assembly (21) and is connected to the oil tank circulation pump (19) and is used to provide power for the oil tank circulation pump (19); a water cooling radiator (22) is mounted on the output end of the oil tank assembly (21); the water cooling radiator (22) is mounted at the bottom of the housing (1) and is used to cool the oil in the pipeline when the hydraulic system is in operation.
4. The aircraft hook test bench according to claim 3, characterized in that: A valve block bracket (17) is provided at a position of the housing (1) corresponding to the output end of the oil tank circulation pump (19), and the valve block bracket (17) is located at the middle position of the bottom of the housing (1); the reversing valve block (16) is mounted on the valve block bracket (17), and is integrally formed by numerical control processing, and is used to install an electromagnetic reversing valve (27) and a superimposed double one-way throttle valve (28); the pressure reducing valve block (18) is mounted on the valve block bracket (17); a sensor bracket (15) is provided at a position of the bottom of the housing (1) corresponding to the oil supply unit pipeline, and the sensor bracket (15) is made of carbon steel and has a plastic spraying treatment on the surface, and the pressure sensor (14) is mounted on the sensor bracket (15); a digital pressure gauge (2) is provided on the upper panel of the housing (1), and is used to display the output pressure value of each pipeline in the execution system; the pressure sensor (14) is connected to the digital pressure gauge (2) through a wire, and is used to detect the oil pressure of each line in the execution system.
5. The aircraft hook test bench according to claim 1, characterized in that: The power unit comprises a main pump motor (13), an internal gear pump (12), a high-pressure filter (11), a sampling valve (10) and an air-cooled radiator (9); the main pump motor (13) is installed at the bottom of the housing (1) and is connected to the oil tank circulation pump (19) of the oil supply unit, and is used to extract the hydraulic oil in the oil supply unit; the internal gear pump (12) is installed on the coupling of the main pump motor (13), and is used to supply pressure to the entire hydraulic system; the high-pressure filter (11) is installed at the bottom of the housing (1) and is connected to the output end of the internal gear pump (12) through a pipeline, and is used to filter the oil in the hydraulic system.
6. The aircraft hook test bench according to claim 5, characterized in that: The sampling valve (10) is arranged on the high-pressure filter (11) and is in communication with the interior of the high-pressure filter (11). The sampling valve (10) can regularly extract the hydraulic oil filtered by the high-pressure filter (11) to judge the quality of the hydraulic oil after filtering. The air-cooled radiator (9) is installed at the bottom of the housing (1) and is used for cooling the oil in the oil tank. The air-cooled radiator (9) is installed at the bottom of the housing (1). The air-cooled radiator (9) is arranged corresponding to the oil tank and is used for cooling the oil in the oil tank assembly (21).
7. The aircraft hook test bench according to claim 1, characterized in that: The housing (1) is formed by bending a steel plate and then welding it, and the whole is spray-coated. The housing (1) is provided with an indicator light (3), a switch (4), a plug interface (5), an alarm (6) and an electric control box (7); The indicator light (3) is installed on the upper panel of the housing (1) and is used to indicate the status of various functions in the control system and the execution system and the status of the product being tested; the switch (4) is a three-stage switch, installed on the upper panel of the housing (1) and is used to control the on and off of various functions in the system; the plug interface (5) is a beacon plug interface, installed on the upper panel of the housing (1) and is used to connect the end point switch mechanism on the product during the test; An alarm (6) is installed on the upper panel of the housing (1) and is used to give an alarm when an abnormal indicator appears during the operation of the test bench; an electric control box (7) is installed above the right side vertical plate of the housing (1) and is used to load and protect electrical components. The inlet and outlet wires of the electric control box (7) are connected by quick connectors, and the ends are crimped by cold-pressed terminals.