Rocker arm dismounting clamp in narrow space

Abstract

The invention relates to a device for disassembling a rocker arm in a narrow space, and belongs to the technical field of aviation maintenance. By adopting the structure, a part in a hole is fixed through the change of the diameter of the expansion part, and then the part can be easily and conveniently taken out from the hole in a labor-saving manner through the cooperation of the disassembly power part, and meanwhile, the part is not easily damaged; moreover, the clamping surface is in surface contact with the rocker arm, so that the contact area between the expansion part and the rocker arm is increased, the connection between the expansion part and the rocker arm is firmer, and the situation that the rocker arm slides off from the expansion part in the process of taking out the part is effectively avoided. And in addition, the structure damage repairing progress is accelerated, and the repairing time can be shortened by 3-5 days.

Description

Technical Field

[0001] The present invention relates to a device for removing a rocker arm in a narrow space and belongs to the technical field of aviation maintenance. Background Art

[0002] The internal structure of an aircraft is relatively narrow and only has a one-way operating space. Many general tools cannot be used for construction, and disassembly and repair are relatively difficult. Currently, in the field of aviation maintenance, most common general tools are wrenches, triangular chucks, etc. These tools have been widely used in the maintenance industry due to their unique tool performance and high cost performance. However, for some structures with special requirements, ordinary tools are inadequate. When repairing special parts, due to their complex structure, performance parameters such as fastening and force limitation cannot be achieved. In a narrow structural gap, general tools cannot enter or contact. For the repair of these narrow spaces in the aircraft, a fixture that can operate in a narrow space is urgently needed to repair the structure here.

[0003] To repair the deformation of the aircraft structure, some rocker arm parts need to be disassembled. This part is a hollow bushing part and cannot be quickly disassembled during the repair process, resulting in a slow repair progress. For a rocker arm installed in a narrow space within a blind hole and only having a one-way disassembly method, it cannot be punched outwards and can only be taken out by pulling. When using a traditional triangular puller, due to the lack of a suitable force application position or the contact method between the puller and the bearing and the sleeve being a point contact with a relatively narrow position, the contact is not firm enough. Therefore, it is very difficult to pull out the rocker arm. Moreover, if the diameter of the hole is small, the traditional puller cannot be placed into the hole and the rocker arm cannot be pulled out either. In addition, using traditional tools such as prying or pulling is likely to damage the parts. For quick repair, a fixture for removing the rocker arm in a narrow space is urgently needed. Summary of the Invention

[0004] According to one aspect of the present application, a device for removing a rocker arm in a narrow space is provided, including an expansion part and a disassembly power part;

[0005] The expansion part is placed inside the rocker arm and is provided with a clamping surface for clamping with the inner wall of the rocker arm;

[0006] The disassembly power part is connected to the expansion part and is used to take out the rocker arm from the narrow space.

[0007] The expansion part is composed of an expansion sleeve 1, a nut 2, and a threaded shaft core 3.

[0008] The inner surface of the expansion sleeve 1 is conical, and an opening is provided on the outer side wall. The opening can be one or more;

[0009] One end of the expansion sleeve 1 with the opening is provided with shoulders, and multiple shoulders form the clamping surface.

[0010] The threaded shaft core 3 includes a conical head and a guide rod, and the smaller-diameter end of the conical head is connected to one end of the guide rod;

[0011] The expansion sleeve 1 is sleeved on the threaded shaft core 3. One open end of the expansion sleeve 1 fits against the outer surface of the conical head and is sleeved on the conical head. Relative movement can occur between the threaded shaft core 3 and the expansion sleeve 1, thereby changing the diameter of the part of the expansion sleeve 1 that enters the rocker arm.

[0012] The nut 2 is used to fix the other end of the expansion sleeve 1 on the guide rod.

[0013] The disassembly power part consists of a slide hammer 4, a rubber pad 5, a slide rod 6, a clamp 7, and a clamp 8.

[0014] The guide rod of the threaded shaft core 3 is threadedly connected to the slide rod 6.

[0015] The slide hammer 4 is sleeved on the slide rod 6 and can slide on the slide rod 6.

[0016] The clamps 7 and 8 are sleeved on the slide rod 6 to limit the sliding position of the slide hammer 4.

[0017] Rubber pads 5 are provided at both ends of the slide hammer 4 to play a role in buffering and protection.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The disassembly tool for unidirectionally disassembling a rocker arm in a narrow space provided by the present invention includes an expansion part and a disassembly power part. The expansion part is used to be placed in a hole, and a clamping surface is provided on the expansion part for clamping with a part in the hole; the disassembly power part is connected to the expansion part and is used to take out the expansion part from the hole. With the above structure, first, the part in the hole is fixed by changing the diameter of the expansion part, and then through the cooperation of the disassembly power part, the part can be easily, conveniently, and labor-savingly taken out of the hole, and at the same time, the part is not easily damaged; moreover, the contact between the clamping surface and the rocker arm is a surface contact, which increases the contact area between the expansion part and the rocker arm, making the connection between the two more firm, effectively avoiding the situation that the rocker arm slips off the expansion part during the process of taking out the part. And it speeds up the repair progress of structural damage and can shorten the repair time by 3 - 5 days. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the device for disassembling the rocker arm in a narrow space.

[0021] Figure 2 It is a schematic diagram of the expansion part.

[0022] Figure 3 It is a schematic diagram of the working state of the device for disassembling the rocker arm in a narrow space.

[0023] Among them, there are a expansion sleeve 1, a nut 2, a threaded shaft core 3, a slide hammer 4, a rubber pad 5, a slide rod 6, a clamp 7, and a clamp 8. Specific implementation manners

[0024] The present application will be described in detail below in conjunction with embodiments, but the present application is not limited to these embodiments.

[0025] Embodiment 1

[0026] A device for removing a rocker arm in a narrow space includes an expansion part and a disassembly power part;

[0027] The expansion part is placed inside the rocker arm and is provided with a clamping surface for clamping with the inner wall of the rocker arm;

[0028] The disassembly power part is connected to the expansion part and is used to take out the rocker arm from the narrow space.

[0029] The expansion part is composed of an expansion sleeve 1, a nut 2, and a threaded shaft core 3.

[0030] The inner surface of the expansion sleeve 1 is conical, and there is an opening on the outer side wall, and the opening can be one or more;

[0031] One end of the opening of the expansion sleeve 1 is provided with a shoulder, and multiple shoulders form a clamping surface.

[0032] The threaded shaft core 3 includes a conical head and a guide rod, and the smaller-diameter end of the conical head is connected to one end of the guide rod;

[0033] The expansion sleeve 1 is sleeved on the threaded shaft core 3, and one end of the opening of the expansion sleeve 1 is attached to the outer surface of the conical head and is sleeved on the conical head. Relative movement can occur between the threaded shaft core 3 and the expansion sleeve 1, so as to change the diameter of the part of the expansion sleeve 1 entering the rocker arm.

[0034] The nut 2 is used to fix the other end of the expansion sleeve 1 on the guide rod.

[0035] The disassembly power part is composed of a slide hammer 4, a rubber pad 5, a slide rod 6, a clamp 7, and a clamp 8.

[0036] The guide rod of the threaded shaft core 3 is threadedly connected to the slide rod 6.

[0037] The slide hammer 4 is sleeved on the slide rod 6 and can slide on the slide rod 6.

[0038] The clamps 7 and 8 are sleeved on the slide rod 6 to limit the sliding position of the slide hammer 4.

[0039] Rubber pads 5 are provided at both ends of the slide hammer 4 to play a role in buffering and protection.

[0040] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can make several modifications or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A device for removing a rocker arm in a narrow space, characterized in that it includes an expansion part and a disassembly power part; The expansion part is placed inside the rocker arm and is provided with a clamping surface for clamping with the inner wall of the rocker arm; The disassembly power part is connected to the expansion part and is used to take out the rocker arm from the narrow space.

2. The device according to claim 1, characterized in that The expansion part is composed of a sleeve (1), a nut (2), and a threaded shaft core (3).

3. The device according to claim 2, characterized in that The inner surface of the sleeve (1) is conical in shape, and there is an opening on the outer side wall, and the opening can be one or more; One end of the opening of the sleeve (1) is provided with a shoulder, and a plurality of shoulders form a clamping surface.

4. The device according to claim 3, characterized in that The threaded shaft core (3) includes a conical head and a guide rod, and the smaller-diameter end of the conical head is connected to one end of the guide rod; The sleeve (1) is sleeved on the threaded shaft core (3), and one end of the opening of the sleeve (1) fits with the outer surface of the conical head and is sleeved on the conical head. Relative movement can occur between the threaded shaft core (3) and the sleeve (1), so as to change the diameter of the part of the sleeve (1) entering the rocker arm, The nut (2) is used to fix the other end of the sleeve (1) on the guide rod.

5. The device according to claim 4, characterized in that The disassembly power part is composed of a slide hammer (4), a rubber pad (5), a slide rod (6), a clamp (7), and a clamp (8).

6. The device according to claim 5, characterized in that The guide rod of the threaded shaft core (3) is threadedly connected to the slide rod (6).

7. The device according to claim 6, characterized in that The slide hammer (4) is sleeved on the slide rod (6) and can slide on the slide rod (6).

8. The device according to claim 7, characterized in that The clamps (7) and (8) are sleeved on the slide rod (6) to limit the sliding position of the slide hammer (4).

9. The device according to claim 8, characterized in that Rubber pads (5) are provided at both ends of the slide hammer (4) to play a role in buffering and protection.

Images