Dismantling tool for safety lock gasket of rear hub shaft pin nut of A320 series airplane

Abstract

The utility model discloses a dismantling tool for an A320 series aircraft rear hub shaft pin nut safety lock gasket, which comprises a main base, a claw assembly, a propulsion base and a main screw rod, the claw assembly is detachably connected with the surface of the main base, the propulsion base is positioned below the main base, and the main screw rod is positioned below the propulsion base. The main screw penetrates through the center of the main base and is embedded in the middle of the propelling base. According to the utility model, accurate dismantling is realized, the dismantling efficiency is high, and the damage to the rear pivot pin and the rear pivot pin nut caused by dismantling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft component maintenance, in particular to a tool for removing a safety lock gasket of a rear pivot pin nut of an A320 series aircraft. Background Art

[0002] The A320 series aircraft is developed and produced by Airbus in Europe. When removing the main landing gear of the A320 series aircraft, the rear pivot pin nut must be removed (see Figure 1 18). A safety lock washer is installed on the rear pivot pin nut (see Figure 1 17). Due to its small size and the special pattern of the safety lock washer, which is a jagged pattern, there is no special tool to remove the safety lock washer. It can only be removed by prying it off with a sharp, hard object. This can easily damage the rear pivot pin (see Figure 1 19) and the rear pivot pin nut (see Figure 1 18), it is impossible to dismantle it accurately, thus affecting its subsequent use. Utility Model Content

[0003] The utility model aims to provide a tool for removing the safety lock gasket of the rear pivot pin nut of the A320 series aircraft. The tool is used to remove the safety lock gasket specifically, quickly and efficiently without causing damage to the rear pivot pin and the rear pivot pin nut, thereby solving the above-mentioned problems existing in the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following solutions:

[0005] A tool for removing a rear hub axle pin nut safety lock gasket of an A320 series aircraft comprises a main base, a hook claw assembly, a propulsion base and a main screw, wherein the hook claw assembly is detachably connected to the surface of the main base, the propulsion base is located below the main base, and the main screw penetrates the center of the main base and is embedded in the middle of the propulsion base.

[0006] The dismantling tool in the present application mainly includes a main base, a hook claw assembly, a propulsion base and a main screw. The hook claw assembly is installed on the surface of the main base and is used to fix and clamp the rear pivot pin nut safety lock gasket for dismantling. The propulsion base is installed in the safety lock gasket on the rear pivot pin, so that the main base and the propulsion base are interlocked, and the hook claw assembly fixes the rear pivot pin nut safety lock gasket. Then one end of the main screw is connected to the wrench assembly, and the main screw passes through the main base and is located in the middle of the propulsion base. Therefore, the main screw exerts an action force on the main base under the action of the wrench assembly, so that the main base moves forward to push the propulsion base, and then exerts a reaction force on the main screw, so that the main base retreats, and the main screw is inserted into the propulsion base and drives it to move backward, so that the hook claw assembly fixes the safety lock gasket and pulls it out and dismantles it. During the dismantling process, the hook claw assembly specifically clamps the safety lock gasket, so that the rear pivot pin and the rear pivot pin nut are not damaged. At the same time, this dismantling tool is easy to install and effectively improves the installation efficiency of the dismantling tool.

[0007] Preferably, a plurality of assembly platforms are evenly arranged on the surface of the main base, and slot holes are respectively arranged at the bottom of the assembly platforms. The hook assembly comprises an L-shaped hook body, and the top of the hook body is inserted into the slot hole.

[0008] Preferably, a first screw hole is provided on the top of the assembly platform, a first locking screw is provided in the first screw hole, and a bottom end of the first locking screw abuts against the top of the hook claw assembly for fixation.

[0009] Preferably, a claw piece is provided at the bottom end of the hook claw body, a second screw hole is provided at the claw piece and the bottom end of the hook claw body, and a second locking screw is provided in the second screw hole.

[0010] Preferably, an L-shaped limiting piece is further provided below the claw piece, and the limiting piece is provided with a second screw hole.

[0011] Preferably, one end of the claw piece adjacent to the propulsion base has a slope.

[0012] Preferably, a first protruding circular platform is provided below the main base, and the propulsion base is provided with a groove matched with the first protruding circular platform, and the first protruding circular platform is located in the groove.

[0013] Preferably, a main screw hole is provided at the center of the main base, the main screw hole passes through the first protruding truncated cone, and the main screw is threadedly connected to the main base and the first protruding truncated cone through the main screw hole.

[0014] Preferably, a second protruding truncated cone is provided at the bottom of the propulsion base, and the propulsion base and the second protruding truncated cone are provided with an insertion hole coaxial with the main screw hole, and the bottom end of the main screw is located in the insertion hole.

[0015] Preferably, the outer diameter of the second protruding cone is matched with the inner diameter of the safety lock washer.

[0016] The utility model has the beneficial effects:

[0017] In the utility model, the main base, the propulsion base, the hook claw assembly and the main screw cooperate with each other, so that the second protruding truncated cone is located inside the safety lock gasket, and at the same time, the claw piece in the hook claw assembly has an inclined surface, so that the inclined surface satisfies the accurate positioning of the convex shoulder in the smaller installation gap between the safety lock gasket and the rear pivot pin nut, and the main screw exerts a reaction force on the main base, so that the hook claw assembly and the propulsion assembly remove the safety lock gasket, and the accurate removal is realized, the removal efficiency is high, and the damage to the rear pivot pin and the rear pivot pin nut caused by the removal is avoided. The limit piece in the hook claw assembly prevents the claw piece from rotating left and right during the removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly structure of the existing rear pivot;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model;

[0020] Figure 3 It is a cross-sectional view of the utility model;

[0021] Figure 4 It is a top view of the main base of the utility model;

[0022] Figure 5 It is a top view of the propulsion base of the utility model;

[0023] Figure 6 This is a state diagram of the utility model when in use.

[0024] Figure markings: 1-main base, 10-assembly table, 100-first screw hole, 101-slot hole, 11-first protruding cone, 13-main screw hole, 2-hook claw assembly, 20-hook claw body, 21-limiting plate, 22-claw plate, 23-first locking screw, 24-second screw hole, 25-second locking screw, 3-push base, 30-groove, 31-second protruding cone, 32-jack, 4-main screw, 5-safety lock gasket, 50-shoulder. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0026] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "opened", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] Embodiment 1 of the utility model is a removal tool for a rear pivot pin nut safety lock gasket of an A320 series aircraft, comprising a main base 1, a hook assembly 2, a propulsion base 3 and a main screw 4, wherein the hook assembly 2 is detachably connected to the surface of the main base 1, the propulsion base 3 is located below the main base 1, and the main screw 4 passes through the center of the main base 1 and is embedded in the middle of the propulsion base 3.

[0030] Reference Figures 1 to 4The dismantling tool in the present application mainly includes a main base 1, a hook claw assembly 2, a propulsion base 3 and a main screw 4. The hook claw assembly 2 is installed on the surface of the main base 1 and is used to fix and clamp the rear pivot pin nut safety lock gasket 5 for dismantling. The propulsion base 3 is installed in the safety lock gasket 5 on the rear pivot pin, so that the main base 1 and the propulsion base 3 are interlocked with each other, and the hook claw assembly 2 fixes the rear pivot pin nut safety lock gasket 5, and then one end of the main screw 4 is connected to the wrench assembly, so that the main screw 4 passes through the main base 1 and is located in the middle of the propulsion base 3, so that the main screw 4 applies an action force to the main base 1 under the action of the wrench assembly, so that the main base 1 pushes the propulsion base 3 forward, and then a reaction force is applied to the main screw 4 to make the main base 1 retreat, and the main screw 4 is inserted into the propulsion base 3 and drives it to move backward, so that the hook claw assembly 2 fixes the safety lock gasket 5 and pulls it out and removes it. During the removal process, the hook claw assembly 2 specifically clamps the safety lock gasket 5, which does not cause damage to the rear pivot pin and the rear pivot pin nut. At the same time, this removal tool is easy to install, which effectively improves the installation efficiency of the removal tool.

[0031] In some preferred embodiments, a plurality of assembly platforms 10 are evenly arranged on the surface of the main base 1, and slots 101 are respectively arranged at the bottom of the assembly platforms 10, and the hook assembly 2 includes an L-shaped hook body 20, and the top of the hook body 20 is inserted into the slot 101. A first screw hole 100 is arranged at the top of the assembly platform 10, and a first locking screw 23 is arranged in the first screw hole 100, and the bottom end of the first locking screw 23 abuts against the top of the hook assembly 2 for fixing.

[0032] Specifically, refer to Figures 2 to 4 The installation of the hook assembly 2 is mainly achieved through the assembly table 10 on the surface of the main base 1. The hook body 20 acts as a part of the hook assembly 2 and is L-shaped. The straight arm at the top is located in the assembly table 10 through the slot 101, and a first locking screw 23 is arranged on the top of the assembly table 10 to fix and limit the hook body 20 through the first screw hole 100 to prevent rotation during the extraction and removal process, thereby affecting the extraction and removal effect.

[0033] The overall length of the first locking screw 23 is set according to the height of the top of the hook body 20, ensuring that the bottom end of the first locking screw 23 abuts against the top of the hook body 20, thereby ensuring the subsequent installation firmness.

[0034] In some preferred embodiments, a claw piece 22 is provided at the bottom end of the hook claw body 20 , and a second screw hole 24 is provided at the claw piece 22 and the bottom end of the hook claw body 20 , and a second locking screw 25 is provided in the second screw hole 24 .

[0035] The claw piece 22 arranged below the bottom end of the hook claw body 20 is fixed by passing through the second screw hole 24 through the second locking screw 25, and the claw piece 22 and the straight arm at the bottom of the hook claw body 20 form an L-shaped structure, so that the safety lock gasket 5 is fixed and limited by the L-shaped structure, so that the safety lock gasket 5 can be pulled out stably.

[0036] In some preferred embodiments, an L-shaped limiting piece 21 is further provided below the claw piece 22, and the limiting piece 21 is provided with a second screw hole 24. The limiting piece 21 is mainly used to limit the position of the claw piece 22 to prevent the claw piece 22 from rotating left and right during the extraction process, thereby affecting the extraction and removal effect. At the same time, the thickness of the overall clamping can be adjusted, so that the length of the second screw hole 24 and the second locking screw 25 in the hook claw body 20 can be set according to actual conditions, ensuring that the claw piece 22 has a certain amount of activity space when hooking the convex shoulder 50 in the safety lock gasket 5, thereby shortening the length of the second locking screw 25 in the second screw hole 24, so that the claw piece 22 is in contact with the convex shoulder 50.

[0037] In some preferred embodiments, the claw piece 22 has an inclined surface at one end adjacent to the propulsion base 3. Since there is an installation gap between the safety lock washer 5 and the rear pivot pin nut, and the installation gap is small, the inclined surface is provided to facilitate the claw piece 22 to enter the installation gap, and to adapt the safety lock washer 5 to the installation gap, ensuring that the claw piece 22 is tightly hooked with the boss 50 in the safety lock washer 5. At the same time, the inclination degree of the inclined surface is not limited here.

[0038] In some preferred embodiments, a first protruding truncated cone 11 is provided below the main base 1, and a groove 30 matching the first protruding truncated cone 11 is provided on the propulsion base 3, and the first protruding truncated cone 11 is located in the groove 30. A main screw hole 13 is provided at the center of the main base 1, and the main screw hole 13 passes through the first protruding truncated cone 11, and the main screw rod 4 is threadedly connected with the main base 1 and the first protruding truncated cone 11 through the main screw hole 13. A second protruding truncated cone 31 is provided at the bottom of the propulsion base 3, and the propulsion base 3 and the second protruding truncated cone 31 are provided with a socket 32 ​​coaxial with the main screw hole 13, and the bottom end of the main screw rod 4 is located in the socket 32.

[0039] Specifically, refer to Figure 3 and Figure 5The propulsion base 3 is first assembled in the safety lock gasket 5 of the rear pivot pin, and the main base 1 is moved toward the propulsion base 3, so that the first protruding cone 11 is located in the groove 30 matched with the propulsion base 3, and the main screw 4 passes through the main base 1 and the first protruding cone 11 in sequence and is located in the propulsion base 3, and the main screw 4 is threadedly connected with the main base 1, and the main screw 4 continues to spirally move in the direction of the propulsion base 3, so that the end of the main screw 4 is located in the socket 32. Therefore, a rotational force in the opposite direction of the wrench assembly is applied to the end of the main screw 4 away from the propulsion base 3, and the main screw 4 will drive the main base 1 to rotate, so that the propulsion base 3 matched with the first protruding cone 11 rotates under the connection with the main screw 4, and the main base 1 retreats in the direction of the rear pivot pin, and finally the safety lock gasket 5 is pulled out under the limiting action of the claw piece 22.

[0040] It should be noted that no thread is provided in the insertion hole 32 .

[0041] In some preferred embodiments, the outer diameter of the second protruding truncated cone 31 is adapted to the inner diameter of the safety lock washer 5. Figure 6 The second protruding truncated platform 31 is mainly located inside the safety lock gasket 5, which is convenient for the subsequent removal of the safety lock gasket 5. At the same time, the outer diameter of the second protruding truncated platform 31 is larger than the first protruding truncated platform 11, which is mainly used to provide an assembly space for the groove 30 of the first protruding truncated platform 11, so that the main screw 4 drives the main base 1 to move, and the base 3 is pushed to provide a fixed active force, so that the claw piece 22 can pull out the safety lock gasket 5 by limiting it, which is convenient and efficient to remove.

[0042] It should be noted that all components in the present application are made of high-strength steel.

[0043] Example 2

[0044] This embodiment 2 is a method of removing the rear pivot pin nut safety lock washer 5 by using the removal tool in embodiment 1 of the utility model. Figure 6 First, assemble the second protruding truncated platform 31 of the propulsion base 3 inside the safety lock gasket 5, insert the straight arm at the top of the hook claw body 20 into the assembly platform 10 through the assembly hole, and use the first locking screw 23 to fix the hook claw body 20 through the first screw hole 100, assemble the claw piece 22 and the limiting piece 21 at the bottom end of the hook claw body 20, and make the second locking screw 25 pass through the claw piece 22, the limiting piece 21 and the second screw hole 24 at the bottom end of the hook claw body 20 in sequence to fix and limit, and then move the main base 1 together with the hook claw assembly 2 toward the propulsion base 3, so that the first protruding truncated platform 11 is assembled in the groove 30, and the claw piece 22 with an inclined surface extends into the installation gap between the safety lock gasket 5 and the rear pivot nut ( Figure 6The main screw 4 is connected to the wrench assembly so that the threaded end of the main screw 4 enters the main base 1 and the first protruding truncated cone 11 in turn, thereby pushing the first truncated cone in the main base 1 to be located in the groove 30 of the propulsion base 3, and then applying a reaction to the main screw 4 through the wrench assembly. The main screw 4 makes the main base 1 retreat in the opposite direction of the safety lock washer 5, thereby driving the hook claw assembly 2 to retreat, and the claw piece 22 thereby pulls out the fixed and limited safety lock washer 5. The dismantling tool of the utility model is suitable for pulling out the safety lock washer 5 of the rear pivot pin nut of the A320 series aircraft. The safety lock washer 5 can be quickly and efficiently pulled out in the rear pivot with a small installation position. At the same time, the rear pivot pin and the rear pivot nut are not damaged during the pulling out process. The dismantling efficiency is high, which effectively improves the work efficiency.

[0045] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.

Claims

1. A tool for removing the safety lock washer of the rear hub pin nut of the A320 series aircraft, characterized in that: The invention comprises a main base (1), a hook claw assembly (2), a propulsion base (3) and a main screw (4); the hook claw assembly (2) is detachably connected to the surface of the main base (1); the propulsion base (3) is located below the main base (1); and the main screw (4) passes through the center of the main base (1) and is embedded in the middle of the propulsion base (3).

2. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 1, characterized in that: A plurality of assembly platforms (10) are evenly arranged on the surface of the main base (1), and slot holes (101) are respectively arranged at the bottom of the assembly platforms (10). The hook claw assembly (2) comprises an L-shaped hook claw body (20), and the top of the hook claw body (20) is inserted into the slot hole (101).

3. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 2, characterized in that: A first screw hole (100) is provided on the top of the assembly platform (10), a first locking screw (23) is provided in the first screw hole (100), and the bottom end of the first locking screw (23) abuts against the top of the hook claw assembly (2) for fixing.

4. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 2, characterized in that: A claw piece (22) is provided at the bottom end of the hook claw body (20), a second screw hole (24) is provided at the bottom end of the claw piece (22) and the hook claw body (20), and a second locking screw (25) is provided in the second screw hole (24).

5. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 4, characterized in that: An L-shaped limiting piece (21) is also provided below the claw piece (22), and the limiting piece (21) is provided with a second screw hole (24).

6. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 4, characterized in that: One end of the claw piece (22) adjacent to the propulsion base (3) has a slope.

7. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 4, characterized in that: A first protruding truncated cone (11) is provided below the main base (1), and the propulsion base (3) is provided with a groove (30) matched with the first protruding truncated cone (11), and the first protruding truncated cone (11) is located in the groove (30).

8. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 7, characterized in that: A main screw hole (13) is provided at the center of the main base (1), and the main screw hole (13) passes through the first protruding truncated cone (11). The main screw rod (4) is threadedly connected to the main base (1) and the first protruding truncated cone (11) through the main screw hole (13).

9. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 7, characterized in that: The bottom of the propulsion base (3) is provided with a second protruding truncated cone (31), and the propulsion base (3) and the second protruding truncated cone (31) are provided with an insertion hole (32) coaxial with the main screw hole (13), and the bottom end of the main screw rod (4) is located in the insertion hole (32).

10. The tool for removing the safety lock washer of the rear pivot pin nut of the A320 series aircraft according to claim 9, characterized in that: The outer diameter of the second protruding truncated cone (31) is matched with the inner diameter of the safety lock washer (5).

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