Auxiliary tool for disassembling and assembling coupling fastening bolt

By designing auxiliary tooling for disassembling and assembling coupling fastening bolts, and using brackets and spline sleeves to fix the fastening bolts, the problem of the drive shaft and bolts rotating during the disassembly and assembly of aircraft couplings was solved, achieving a more efficient disassembly and assembly process.

CN223933509UActive Publication Date: 2026-02-24CHINESE PEOPLES LIBERATION ARMY UNIT 61267
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Patent Information

Application Number
CN202520492400.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-20
Publication Date
2026-02-24
Estimated Expiration
2035-03-20

AI Technical Summary

Technical Problem

During the assembly and disassembly of aircraft coupling fastening bolts, the limited operating space and lack of specialized auxiliary tools result in time-consuming, labor-intensive, and inefficient assembly and disassembly of the fastening bolts.

Method used

Design an auxiliary tool for disassembling and assembling coupling fastening bolts, including a bracket and a dodecagonal pendant. The bracket supports the bolts and the dodecagonal pendant fixes them to overcome the rotation of the drive shaft and the fastening bolts.

Benefits of technology

It improves the efficiency of fastening bolt assembly and disassembly, reduces the difficulty and cost of the work, and makes the assembly and disassembly process more time-saving and labor-saving.

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Abstract

The utility model relates to the technical field of aviation maintenance tools, in particular to an auxiliary tool for disassembling and assembling a coupling fastening bolt, which comprises a support and a twelve-point plum sleeve with one end fixed on the support. The support comprises an oval arc-shaped support body, bottom feet are symmetrically arranged at the two ends of the support body, and the twelve-point plum blossom sleeve is fixed to one side of the middle of the support body. During use, the bottom feet abut against the reinforcing steel plate, the dodecagonal plum blossom sleeve is sleeved with a hexagon head of a coupling fastening bolt, the transmission shaft is pulled to rotate slowly, follow-up rotation between the transmission shaft and the fastening bolt in the dismounting operation process is overcome through supporting assistance of the support, and the working difficulty and the dismounting operation cost are reduced. According to the utility model, the follow-up rotation of the transmission shaft and the fastening bolt in the disassembly and assembly operation process can be overcome, so that the disassembly and assembly of the fastening bolt are more time-saving and labor-saving, and the disassembly and assembly efficiency is higher.
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Description

Technical Field

[0001] This utility model relates to the field of aviation maintenance tool technology, specifically to an auxiliary tool for disassembling and assembling coupling fastening bolts. Background Technology

[0002] Currently, during the disassembly and assembly of aircraft coupling fastening bolts, the limited operating space, lack of suitable special auxiliary tools, and the fact that the drive shaft and fastening bolts rotate together make the disassembly and assembly of fastening bolts time-consuming, labor-intensive, and extremely inefficient. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing an auxiliary tool for disassembling and assembling coupling fastening bolts. This tool can overcome the rotation of the drive shaft and fastening bolts during disassembly and assembly, making the disassembly and assembly of fastening bolts more time-saving, labor-saving, and efficient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A coupling fastening bolt disassembly and assembly auxiliary tool includes a bracket and a dodecagonal spigot sleeve fixed at one end to the bracket; the bracket includes an elliptical arc frame, with feet symmetrically arranged at both ends of the frame, and the dodecagonal spigot sleeve is fixed to one side of the middle part of the frame.

[0006] Furthermore, a rubber cushioning pad is fixed to the bottom end of the foot.

[0007] Furthermore, the base extends radially outward to form an extended slope.

[0008] Furthermore, the dodecagonal plum blossom sleeve is provided with a through hole with a hexagonal cross-section.

[0009] Furthermore, the dodecagonal plum blossom sleeve is welded and fixed to the bracket.

[0010] The beneficial effects of this utility model are:

[0011] In practical applications, the base is placed against the reinforcing steel plate, and the dodecagonal spigot is inserted into the hexagonal head of the coupling fastening bolt. The drive shaft is then slowly rotated. With the support of the bracket, the rotation between the drive shaft and the fastening bolt during disassembly and assembly is overcome, reducing the difficulty of the work and the cost of disassembly and assembly. This invention can overcome the rotation between the drive shaft and the fastening bolt during disassembly and assembly, making the disassembly and assembly of the fastening bolt more time-saving, labor-saving, and efficient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a top view of the present invention;

[0014] Figure 3 This is the front view of this utility model;

[0015] Figure 4 yes Figure 3 Cross-sectional view at point AA;

[0016] Figure label: Rubber cushioning pad 1 ； Bottom 2 ； 3. Bracket; 4. Dodecagonal plum blossom sleeve. Detailed Implementation

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an auxiliary tool for disassembling and assembling coupling fastening bolts includes a bracket 3 and a dodecagonal pendant 4 fixed at one end to the bracket 3; the bracket 3 includes an elliptical arc frame, with base feet 2 symmetrically arranged at both ends of the frame, and the dodecagonal pendant 4 fixed to one side of the middle part of the frame.

[0018] In use, the base 2 is placed against the reinforcing steel plate, and the dodecagonal spigot 4 is inserted into the hexagonal head of the coupling fastening bolt. The drive shaft is slowly rotated. With the support of the bracket 3, the rotation between the drive shaft and the fastening bolt during disassembly and assembly is overcome, reducing the difficulty of the work and the cost of disassembly and assembly. This utility model can overcome the rotation between the drive shaft and the fastening bolt during disassembly and assembly, making the disassembly and assembly of the fastening bolt more time-saving and labor-saving, and more efficient.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a rubber buffer pad 1 is fixed to the bottom end of the base 2; in this embodiment, the rubber buffer pad 1 acts as a pressure on the reinforcing steel plate below the drive shaft by the base 2 of the bracket 3, thereby protecting the reinforcing steel plate.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the base 2 extends radially outward to form an extended inclined surface; in this embodiment, the extended inclined surface increases the force-bearing area at the bottom of the base 2, reduces local pressure, increases the contact area between the base 2 and the reinforcing steel plate, and improves the support effect of the bracket 3.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the dodecagonal plum blossom sleeve 4 is provided with a through hole with a hexagonal cross-section; in this embodiment, the hexagonal head of the fastening bolt is sleeved through the through hole with a hexagonal cross-section to prevent it from rotating, thus completing the assembly and disassembly of the fastening bolt.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the dodecagonal plum blossom sleeve 4 is welded and fixed to the bracket 3; in this embodiment, the connection strength between the dodecagonal plum blossom sleeve 4 and the bracket 3 can be strengthened by welding and fixing the dodecagonal plum blossom sleeve 4 to the bracket 3.

[0023] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. An auxiliary tooling for disassembling and assembling coupling fastening bolts, characterized in that: Includes a bracket (3) and a dodecagonal plum blossom sleeve (4) with one end fixed to the bracket (3); The bracket (3) includes an elliptical arc frame, with feet (2) symmetrically arranged at both ends of the frame, and the dodecagonal plum blossom sleeve (4) is fixed to one side of the middle of the frame.

2. The auxiliary tooling for disassembling and assembling coupling fastening bolts according to claim 1, characterized in that, A rubber buffer pad (1) is fixed to the bottom end of the foot (2).

3. The auxiliary tooling for disassembling and assembling coupling fastening bolts according to claim 1, characterized in that, The base (2) extends radially outward to form an extended slope.

4. The auxiliary tooling for disassembling and assembling coupling fastening bolts according to claim 1, characterized in that, The dodecagonal plum blossom sleeve (4) has a through hole with a hexagonal cross-section inside.

5. The auxiliary tooling for disassembling and assembling coupling fastening bolts according to claim 1, characterized in that, The dodecagonal plum blossom sleeve (4) is welded and fixed to the bracket (3).