Ground inspection device for cabin door uplock

Abstract

The utility model provides a ground inspection device for an uplock of a cabin door, and relates to the technical field of opening and closing detection of the uplock of the cabin door. Two sets of pipelines are arranged and correspond to unlocking inflation and locking inflation respectively, a locking inflation hose and an unlocking inflation hose can be connected with a locking pipe nozzle and an unlocking pipe nozzle of the uplock respectively, tests such as locking and unlocking of the uplock are achieved by adjusting a locking switch, an unlocking switch and a deflation switch on an operation panel, repeated disassembly and assembly are avoided, and the test efficiency is improved. Connection and work preparation of all connecting pipelines can be rapidly achieved, and the detection progress is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of hatch door upper lock opening and closing detection, in particular to a ground inspection device for hatch door upper lock. Background Art

[0002] The hydraulic lock is a hydraulic actuator that converts hydraulic energy into mechanical energy. In the aircraft hydraulic system, the aircraft cabin door is locked after closing, and the hydraulic lock release mechanism is activated before the cabin door is opened to achieve the normal closing and release of the cabin door. During the flight of the aircraft, after other actuators drive the cabin door to move to the closed state, a stable hydraulic lock mechanism is required to lock and maintain it to ensure the cabin door state during the flight. After receiving the command signal to open the cabin door, the hydraulic lock can be released in time through the hydraulic system to ensure the normal opening of the cabin door. The performance and stability of the hydraulic lock are crucial to the reliability of the flight process and even flight safety.

[0003] The movement process of the hydraulic lock is mainly divided into the locking process and the unlocking process. In the locking process, the lock ring of the hatch touches the lock hook of the hydraulic lock, driving the lock hook to rotate a certain angle to cross a designed unlocking movement critical point position, and the lock hook automatically drives the hatch to move to the locking position and locks it. During the unlocking process, the hydraulic lock releases the hatch load after the hydraulic reversal, and there are problems of mutual control and mutual influence among the various control actions. During the ground inspection stage, it is necessary to test the components of the hydraulic lock that locks the hatch door load and the hydraulic lock control system.

[0004] The power source pressure and flow rate used in the existing detection device are large, and the pressure of the hydraulic lock system will fluctuate with the load test resistance. The working conditions are complex, the loading system pressure is abnormal, and after the fluid medium is repeatedly recycled, the viscosity, pH value and other indicators will deteriorate; if leakage occurs during the test, the hydraulic lock system pressure will be insufficient, which is very different from the actual working conditions. Traditional hydraulic loading equipment uses multiple sets of throttling nozzles to switch to control the flow rate. During the debugging stage, it is necessary to test the flow characteristics of throttling nozzles of different diameters under working pressure; the test technology has a small adjustable range of loading flow, and a lot of time is invested. The preparation work before the manual test is large, and it cannot effectively detect the actual performance and comprehensive characteristics of the hydraulic lock with the cabin door load system components after overhaul, which affects the ultimate safety of the hydraulic lock control system. Utility Model Content

[0005] The utility model aims to provide a ground inspection device for a hatch upper lock, which can solve the problems raised by the above-mentioned background technology in view of the shortcomings of the prior art.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The utility model provides a ground inspection device for a hatch upper lock, comprising a box body, an operation panel, a gas cylinder, a pressure regulating valve, an unlocking and inflating component and a locking and inflating component, the operation panel is installed in the box body to form a containing space, the gas cylinder, the pressure regulating valve, the unlocking and inflating component and the locking and inflating component are all installed in the containing space, the gas cylinder is communicated with the pressure regulating valve, and the unlocking and inflating component and the locking and inflating component are respectively communicated with the pressure regulating valve.

[0008] In some technical solutions of the utility model, the unlocking and inflation assembly includes an unlocking nozzle switch, an unlocking nozzle pressure gauge, a first filter and an unlocking nozzle interface which are connected in sequence; the unlocking nozzle switch is connected to the pressure regulating valve.

[0009] In some technical solutions of the utility model, the locking inflation assembly includes a locking nozzle switch, a locking nozzle pressure gauge, a second filter and a locking nozzle interface which are connected in sequence; the locking nozzle switch is connected to the pressure regulating valve.

[0010] In some technical solutions of the utility model, a gas cylinder pressure gauge and a gas cylinder switch are connected in sequence between the gas storage cylinder and the pressure regulating valve.

[0011] In some technical solutions of the utility model, a safety valve is provided on the exhaust end of the gas cylinder switch.

[0012] In some technical schemes of the utility model, it also includes a gas cylinder gas supply interface connected to the gas storage cylinder, and a first deflation switch, a third filter and a one-way valve are arranged in sequence between the gas cylinder gas supply interface and the one-way valve.

[0013] In some technical solutions of the present utility model, a handle and a pull rod are provided on one side of the box.

[0014] In some technical solutions of the utility model, two casters are rotatably provided on the side wall of the box.

[0015] In some technical solutions of the utility model, a box cover is provided on the box body, a partition is provided inside the box cover, and a hose is provided inside the partition.

[0016] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0017] The use of quick-change connectors allows the connection of various pipes and preparation for work to be quickly achieved, speeding up the progress of testing; the integrated design of the box body can achieve the advantages of rapid movement, rapid deployment and rapid work of the equipment; it has the characteristics of reasonable design, novel structure, easy assembly and disassembly, convenient transportation of the whole machine, on-site mobility, strong practicality, safety and reliability, etc., which meet the work requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a bottom-up combined schematic diagram of the utility model;

[0022] Figure 4 This is a schematic diagram of the pipeline installation line structure of the utility model

[0023] Icons: 1. Box cover; 2. Gas cylinder air filling interface; 3. First deflation switch; 4. Gas cylinder pressure gauge; 5. Handle; 6. Pull rod; 7. Gas cylinder switch; 8. Pressure regulating valve; 9. Lock; 10. Lock nozzle switch; 11. Unlock nozzle switch; 12. Handle; 13. Box body; 14. Casters; 15. Unlock nozzle pressure gauge; 16. Third deflation switch; 17. Unlock nozzle interface; 18. Second deflation switch; 19. Lock nozzle interface; 20. Lock nozzle pressure gauge; 21. Operation panel; 22 Support foot; 23. Interlayer; 24. Hose; 25. Gas cylinder; 26. Third filter; 27. First filter; 28. Second filter; 29. ​​One-way valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] Please refer to Figure 1-Figure 4 shown.

[0028] The utility model provides a ground inspection device for hatch upper lock, such as Figure 1 , Figure 2 As shown, it includes a box body 13, an operation panel 21, a gas cylinder 25, a pressure regulating valve 8, an unlocking and inflating component, and a locking and inflating component. The operation panel 21 is installed in the box body 13 to form a storage space. The gas cylinder 25, the pressure regulating valve 8, the unlocking and inflating component, and the locking and inflating component are all installed in the storage space. The gas cylinder 25 is connected to the pressure regulating valve 8, and the unlocking and inflating component and the locking and inflating component are respectively connected to the pressure regulating valve 8. The unlocking and inflating component includes an unlocking nozzle switch, an unlocking nozzle pressure gauge, a third deflation switch 16, and a first deflation switch 17. A filter 27 and an unlocking nozzle interface 17; the unlocking nozzle switch is connected to the pressure regulating valve 8; the locking inflation component includes a locking nozzle switch, a locking nozzle pressure gauge, a second deflation switch 18, a second filter 28 and a locking nozzle interface 19 which are connected in sequence; the locking nozzle switch is connected to the pressure regulating valve 8; the gas cylinder pressure gauge 4 and the gas cylinder switch 7 are connected in sequence between the gas storage cylinder 25 and the pressure regulating valve 8; a safety valve is provided on the exhaust end of the gas cylinder switch 7; it also includes a gas cylinder gas replenishment interface 2 connected to the gas storage cylinder 25, and a first deflation switch 3, a third filter 26 and a one-way valve are provided in sequence between the gas cylinder gas replenishment interface 2 and the one-way valve 29. 29.

[0029] In some technical solutions of the utility model, a box cover 1 is provided on the box body 13 , a partition 23 is provided inside the box cover 1 , and a plurality of hoses 24 are provided inside the partition 23 .

[0030] This device is mainly used for ground operation of the front hatch upper lock and for function and performance testing. The box body 13 is an aluminum alloy box, and is designed with a pull rod 6 (retractable), casters 14, handles 5 and handles 12, which are convenient for movement and packaging transfer; the hoses 24 are respectively an air source hose 24, a locking and inflating hose 24 and an unlocking and inflating hose 24. At least three hoses 24 have identification marks and are fixedly stored in the compartment 23 built into the box cover 1;

[0031] The gas storage cylinder 25 is a 5L carbon fiber gas cylinder. After the 5L carbon fiber gas cylinder is inflated with gas through the gas source hose 24 and the gas cylinder inflating interface 2 (the gas source hose 24 and the gas cylinder inflating interface 2 are connected with a quick-change connector for easy operation), the equipment can be carried to the field for use. It can also be directly connected to an external nitrogen source for use. The pressure is adjusted by the pressure regulating valve 8 on the operation panel 21 to achieve the required working pressure. Two sets of pipelines are set, corresponding to unlocking and inflating respectively, so that the locked inflation hose 24 and the unlocking inflation hose 24 can be connected to the locking nozzle and unlocking nozzle of the upper lock respectively. The upper lock is connected to the upper lock, and the locking and unlocking tests can be realized by adjusting the locking switch, unlocking switch and deflation switch on the operation panel 21 to avoid repeated disassembly and assembly; a gas cylinder pressure gauge 4 is installed on the left side of the operation panel 21 to facilitate the observation of the pressure of the carbon fiber gas cylinder or the external gas source; at the same time, a locking nozzle pressure gauge 20 and an unlocking nozzle pressure gauge 15 are installed on the right side of the operation panel 21 to display the air pressure of the locking nozzle and the unlocking nozzle; a high-pressure filter is installed at the gas source inlet and the inflation outlet, which is mainly used to filter nitrogen to ensure the normal operation of each component of the system and the cleanliness of the nitrogen filled into the aircraft. Through the above structure, each connecting pipeline can be quickly connected and ready for work.

[0032] The operating principle of gas cylinder filling:

[0033] Connect one end of the gas source hose 24 to the nitrogen source, and the other end to the gas cylinder gas supply interface 2 on the equipment operation panel 21; (Note: When there is air pressure in the pipeline between the gas cylinder gas supply interface 2 and the one-way valve 29, it is necessary to open the first air release switch 3 to release the remaining air in the pipeline before the gas source hose 24 and the gas cylinder gas supply interface 2 can be connected through the quick-change connector) Close the first air release switch 3, close the gas cylinder switch 7, and loosen and close the pressure regulating valve 8 counterclockwise;

[0034] Turn on the switch of the nitrogen source to replenish the 5L carbon fiber gas cylinder; (Note: observe the gas cylinder pressure gauge 4, the gas cylinder pressure is not more than 18MPa);

[0035] Close the switch of the nitrogen source, open the first venting switch 3, and discharge the remaining gas in the pipeline between the nitrogen source and the one-way valve 29;

[0036] Remove the air source hose 24 and put it back into the upper cover 1 of the equipment.

[0037] Locking test operation steps:

[0038] Connect one end of the locking inflation hose 24 to the locking nozzle of the upper lock, and the other end to the locking nozzle interface 19 on the equipment operation panel 21;

[0039] Close the first deflation switch 3, the second deflation switch 18, the third deflation switch 16, the locking nozzle switch 10, the unlocking nozzle switch 11, and unscrew and close the pressure regulating valve 8 counterclockwise;

[0040] Open the gas cylinder switch 7 and the locking nozzle switch 10 in sequence; rotate the regulating valve 8 clockwise, observe the locking nozzle pressure gauge 20, and stop rotating the regulating valve 8 after the required working pressure is reached; (Note: When repeatedly releasing and pressurizing the locking nozzle during the test, first close the locking nozzle switch 10, open the second air release switch 18 to release the pressure, then close the second air release switch 18, and slowly open the locking nozzle switch 10 to pressurize)

[0041] After the test is completed, close the gas cylinder switch 7, open the second deflation switch 18, and discharge the remaining gas in the pipeline between the locking nozzle and the gas cylinder switch 7;

[0042] Unscrew and close the pressure regulating valve 8 counterclockwise, and close the locking nozzle switch 10 and the second deflation switch 18;

[0043] Remove the locked inflation hose 24 and put it back into the upper cover 1 of the equipment.

[0044] Unlocking test operation steps;

[0045] Connect one end of the unlocking and inflating hose 24 to the unlocking nozzle of the upper lock, and the other end to the unlocking nozzle interface 17 on the equipment operation panel 21;

[0046] Close the first deflation switch 3, the second deflation switch 18, the third deflation switch 16, the locking nozzle switch 10, the unlocking nozzle switch 11, and unscrew and close the pressure regulating valve 8 counterclockwise;

[0047] Turn on the gas cylinder switch 7 and the unlock nozzle switch 11 in sequence;

[0048] Rotate the regulating pressure regulating valve 8 clockwise, observe the unlocking nozzle pressure gauge 15, and stop rotating the regulating valve 8 after reaching the required working pressure; (Note: When repeatedly releasing and pressurizing the unlocking nozzle during the test, first close the unlocking nozzle switch 11, open the third air release switch 16 to release the pressure, then close the third air release switch 16, and slowly open the unlocking nozzle switch 11 to pressurize)

[0049] After the test is completed, close the gas cylinder switch 7, open the third deflation switch 16, and discharge the remaining gas in the pipeline between the unlocking nozzle and the gas cylinder switch 7; unscrew and close the pressure regulating valve 8 counterclockwise, and close the unlocking nozzle switch 11 and the third deflation switch 16;

[0050] Remove the unlocking and inflating hose 24 and put it back into the upper cover 1 of the equipment.

[0051] In some technical solutions of the present invention, a handle 5 and a pull rod 6 are provided on one side of the box body 13, so that the advantages of rapid movement, rapid deployment and rapid operation of the equipment can be achieved.

[0052] In some technical solutions of the utility model, two casters 14 are rotatably provided on the side wall of the box. The casters 14 are arranged to facilitate the user to drag the box 13 to move quickly in the venue to improve work efficiency.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ground inspection device for hatch upper lock, characterized in that: It includes a box body, an operation panel, a gas cylinder, a pressure regulating valve, an unlocking and inflating component, and a locking and inflating component. The operation panel is installed in the box body to form a accommodating space. The gas cylinder, the pressure regulating valve, the unlocking and inflating component, and the locking and inflating component are all installed in the accommodating space. The gas cylinder is connected to the pressure regulating valve, and the unlocking and inflating component and the locking and inflating component are respectively connected to the pressure regulating valve.

2. A ground inspection device for hatch door upper lock according to claim 1, characterized in that: The unlocking and inflating assembly includes an unlocking nozzle switch, an unlocking nozzle pressure gauge, a third deflation switch, a first filter and an unlocking nozzle interface which are connected in sequence; the unlocking nozzle switch is connected to the pressure regulating valve.

3. A ground inspection device for hatch door upper lock according to claim 1, characterized in that: The locking inflation assembly includes a locking nozzle switch, a locking nozzle pressure gauge, a second deflation switch, a second filter and a locking nozzle interface which are connected in sequence; the locking nozzle switch is connected to the pressure regulating valve.

4. A ground inspection device for hatch door upper lock according to claim 1, characterized in that: A gas cylinder pressure gauge and a gas cylinder switch are sequentially connected between the gas storage cylinder and the pressure regulating valve.

5. A ground inspection device for hatch door upper lock according to claim 4, characterized in that: A safety valve is provided on the exhaust end of the gas cylinder switch.

6. A ground inspection device for hatch door upper lock according to claim 1, characterized in that: It also includes a gas cylinder gas replenishment interface connected to the gas storage cylinder, and a first deflation switch, a third filter and a one-way valve are arranged in sequence between the gas cylinder gas replenishment interface and the one-way valve.

7. A ground inspection device for hatch door upper lock according to claim 1, characterized in that: A handle and a pull rod are provided on one side of the box body.

8. The ground inspection device for hatch door upper lock according to claim 1, characterized in that: Two casters are rotatably arranged on the side wall of the box.

9. A ground inspection device for hatch door upper lock according to claim 1, characterized in that: The box body is provided with a box cover, a partition is provided inside the box cover, and a plurality of hoses are provided inside the partition.

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