Simulation nose landing gear uplock device

Abstract

The utility model provides a simulation nose landing gear uplock device which comprises a shell formed by assembling a first lock plate and a second lock plate and further comprises an uplock assembly arranged between the first lock plate and the second lock plate. The uplock assembly comprises a shifting fork, a lock hook and an air cylinder. The lock hook is hinged to the lower portion of the shell through a first rotating shaft. The shifting fork is rotationally connected between the lock plates on the two sides through a second rotating shaft; the air cylinder is used for driving the shifting fork to rotate so that the lower end of the shifting fork can drive the latch hook to rotate. The shell of the device is in a lock plate type assembly design, on-site rapid disassembly and assembly are facilitated, an observation window is formed, mechanism maintenance and lubrication are facilitated, teaching is facilitated, and meanwhile the weight of the whole device can be reduced; by arranging the manual pressing plate on the shifting fork, the device can be manually controlled to operate, a key effect can be achieved when the actuation of the air cylinder fails, it is guaranteed that the simulated undercarriage can be safely put down, teaching can be visually carried out, and it is guaranteed that the teaching process is smooth.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aircraft structure simulation, specifically relates to a simulation nose landing gear uplock device. BACKGROUND

[0002] When the landing gear is retracted and locked in the belly, the uplock can provide reliable mechanical locking to ensure that the landing gear will not be accidentally lowered due to vibration in flight, hydraulic system failure or other unexpected circumstances. The current uplock uses a cast shell, which is relatively closed, heavy, and inconvenient to maintain and intuitive teaching. When the cylinder pipe is loose and the air pressure is unstable, the uplock cannot be actuated, affecting the teaching effect.

[0003] Therefore, the applicant proposes the present application after studying the existing technology. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a simulation nose landing gear uplock device, aims at improving at least one of above -mentioned technical problems.

[0005] To solve the above technical problems, the utility model provides a simulation nose landing gear uplock device, comprising the shell formed by the first lock plate and the second lock plate assembly, and the two lock plates are spaced apart;It also includes the uplock assembly installed between the first lock plate and the second lock plate;The uplock assembly includes a shift fork, a lock hook and a cylinder, the lock hook is hingedly arranged in the lower part of the shell through a first pivot, the shift fork is rotatably connected between the two side lock plates through a second pivot, the cylinder is used to drive the shift fork to rotate, so that the lower end of the shift fork can drive the lock hook to rotate, and the end of the shift fork away from the lock hook extends upward to the outside of the shell to form a manual pressing plate.

[0006] As a further optimization, the shell is assembled and connected by bolts and bushings.

[0007] As a further optimization, a first push wheel is rotatably connected to the shift fork, and the piston rod of the cylinder can push the first push wheel to drive the shift fork to rotate.

[0008] As a further optimization, a connecting shaft is arranged on the inner side of the shell, the uplock assembly further includes a return spring, one end of the return spring is connected with the connecting shaft, and the other end is connected with the shift fork.

[0009] As a further optimization, a second push wheel is rotatably connected to the end of the shift fork close to the lock hook, and the second push wheel abuts against the lock hook;The lock hook is configured such that when the shift fork rotates, the second push wheel can drive the lock hook to rotate.

[0010] As a further optimization, the profile of the side of the locking hook close to the shift fork is arc-shaped.

[0011] As a further optimization, the housing is provided with an observation window.

[0012] By adopting the technical scheme, the following technical effects can be achieved.

[0013] The utility model provides a kind of simulation front landing gear upper lock device, the shell of device is lock plate type assembly design, it is convenient to on-site quick disassembly and assembly, open observation window to facilitate mechanism maintenance lubrication and easy to teach, simultaneously can reduce the weight of entire device;Manual pressing plate is set on shift fork, device operation can be manually controlled, can play a key role when cylinder actuation fails, ensure that simulated landing gear can be safely put down, can also be intuitive to teach, ensure the smoothness of teaching process;Arc-shaped interval profile is set between two arc-shaped mouths, cooperate with push wheel, it can be more smooth when control conversion state, can eliminate stroke dead zone, reduce jam hazard, ensure the normal operation of device. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, on the premise of not paying creative labor, other related drawings can also be obtained according to these drawings.

[0015] Fig. 1 It is the structure schematic diagram of a kind of simulation front landing gear upper lock device of the utility model;

[0016] Fig. 2 It is the internal structure schematic diagram of a kind of simulation front landing gear upper lock device of the utility model;

[0017] Marked in the figure: 1, first lock plate;2, second lock plate;3, bolt;4, bushing;5, shift fork;6, locking hook;7, cylinder;8, first rotating shaft;9, second rotating shaft;10, manual pressing plate;11, first push wheel;12, second push wheel;13, connecting shaft;14, return spring;15, observation window. DETAILED DESCRIPTION

[0018] In order to make the purposes, technical schemes and advantages of the embodiments of the present application clearer, the technical schemes of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0019] As shown in the drawings, Figs. 1-2 The embodiment of the present application provides a simulation front landing gear upper lock device, which comprises a shell and an upper lock assembly, wherein the shell is assembled and connected by a first lock plate 1 and a second lock plate 2 through bolts 3 and bushings 4, in the embodiment, specifically, the bolts 3 pass through the two lock plates, are fixed through nuts, and the bushings 4 are sleeved on the bolts 3 and abut between the two lock plates, so that a spacing space is formed to accommodate the upper lock assembly. In this way, the shell is convenient to install and disassemble, the structure is simple, the shell is arranged on both sides of the upper lock assembly to support and protect, the weight is relatively light, there are openings in multiple directions, and the direct and intuitive teaching and maintenance are facilitated, and the single-side lock plate can be disassembled for observation when needed.

[0020] Preferably, the upper lock assembly includes a fork 5, a hook 6 and a cylinder 7, the hook 6 is hingedly arranged at the lower part of the shell through a first rotating shaft 8, the front end of the hook 6 is provided with an opening for hooking the landing gear stowage lock roller, which will not be described here. The fork 5 is rotatably connected between the two side lock plates through a second rotating shaft 9; the cylinder 7 is used to drive the fork 5 to rotate, so that the lower end of the fork 5 can drive the hook 6 to rotate; the end of the fork 5 away from the hook 6 extends upward outside the shell to form a manual pressing plate 10. In this embodiment, the first rotating shaft 8 and the second rotating shaft 9 are fixedly arranged on the first lock plate 1, the fork 5 is driven to rotate by the piston rod of the cylinder 7, and in turn the driving end of the fork 5 drives the hook 6 to rotate relative to the first rotating shaft 8. Specifically, in this embodiment, a first push wheel 11 is rotatably connected to the fork 5, and the piston rod of the cylinder 7 can push the first push wheel 11 to drive the fork 5 to rotate. Further, the end of the fork 5 close to the hook 6 is rotatably connected with a second push wheel 12, and the second push wheel 12 abuts against the hook 6; the hook 6 is configured to, when the fork 5 rotates, the second push wheel 12 can drive the hook 6 to rotate. Specifically, the rear upper end of the hook 6 is provided with two arc-shaped openings spaced apart, normally, the second push wheel 12 can abut against the upper arc-shaped opening, at this time the opening of the hook 6 is in the stowed position, and the landing gear stowage lock roller can be stowed, when moving to the lower arc-shaped opening, the opening of the hook 6 is inclined, and the landing gear stowage lock roller can be released, which will not be described here. Preferably, the two arc-shaped openings are arranged in an arc-shaped protrusion, which not only separates the two arc-shaped openings, but also smoothly moves the second push wheel 12, eliminates the travel dead zone, and enables the entire device to operate smoothly. The upper part of the front end of the hook 6 is provided with a limiting column for limiting.

[0021] Further, a connecting shaft 13 is arranged on the inner side of the inner shell; the upper lock assembly further includes a return spring 14, one end of the return spring 14 is connected with the connecting shaft 13, and the other end is connected with the fork 5. When the piston rod of the cylinder 7 is retracted, the fork 5 is pulled by the return spring 14, so that the fork 5 can be reset, and in turn the hook 6 is driven to keep it in the stowed state.

[0022] Preferably, by arranging the manual pressing plate 10 of the fork 5 to extend out of the upper end of the shell, the simulated landing gear can be safely lowered in the case that the cylinder 7 cannot be actuated by manual means, which increases the safety and reliability of the entire device, and is also a very necessary redundant design. At the same time, manual control can be more intuitive and easy to observe and learn.

[0023] Preferably, an observation window 15 is arranged on the shell, in this embodiment, the observation window 15 is arranged on the second lock plate 2, so that the device is easy to maintain and lubricate, and easy to teach, and the total amount of the entire device can be reduced. The observation window 15 is arranged near the first rotating shaft 8 and the second rotating shaft 9, and on one side of the cylinder 7.

[0024] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A simulated nose landing gear upper locking device, characterized in that, The device includes a housing formed by assembling a first locking plate and a second locking plate, with the two locking plates spaced apart. It also includes an upper locking assembly installed between the first and second locking plates. The upper locking assembly includes a shift fork, a locking hook, and a cylinder. The locking hook is hinged to the lower part of the housing via a first pivot. The shift fork is rotatably connected between the two locking plates via a second pivot. The cylinder drives the shift fork to rotate, so that the lower end of the shift fork can drive the locking hook to rotate. The end of the shift fork away from the locking hook extends upwards to the outside of the housing to form a manual pressure plate.

2. The simulated nose landing gear upper locking device according to claim 1, characterized in that... The outer casing is assembled and connected by bolts and bushings.

3. The simulated nose landing gear upper locking device according to claim 1, characterized in that... A first push wheel is rotatably connected to the shift fork, and the piston rod of the cylinder can push the first push wheel to drive the shift fork to rotate.

4. A simulated nose landing gear upper locking device according to claim 3, characterized in that... A connecting shaft is provided on the inner side of the housing; the upper lock assembly also includes a return spring, one end of which is connected to the connecting shaft and the other end of which is connected to the shift fork.

5. A simulated nose landing gear upper locking device according to claim 1, characterized in that... The fork is rotatably connected to a second push wheel at one end near the locking hook, and the second push wheel abuts against the locking hook; the locking hook is constructed such that when the fork rotates, the second push wheel can drive the locking hook to rotate.

6. A simulated nose landing gear upper locking device according to claim 1, characterized in that... The outline of the locking hook near the shift fork is arc-shaped.

7. A simulated nose landing gear upper locking device according to claim 1, characterized in that... An observation window is provided on the outer casing.

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