Fastener dismantling device with controllable impact load

Abstract

The utility model relates to the technical field of aircraft assembly, in particular to an impact load controllable fastener dismantling device which comprises a sleeve, the sleeve comprises a sleeve cover and a sleeve body, a limiting lantern ring is arranged at the top of the sleeve body, a groove matched with the limiting lantern ring is formed in the bottom of the sleeve cover, and the limiting lantern ring is arranged in the groove. The groove is in threaded connection with the limiting lantern ring; the sleeve cover is provided with a riveting clamp through hole, and the sleeve body is provided with a fastener through hole. An elastic piece is arranged between the sleeve cover and the sleeve body, the bottom of the elastic piece is connected with a buffer piece, and the buffer piece can move in the fastener through hole; and the riveting clamp through hole, the fastener through hole, the elastic piece and the buffer piece are coaxially arranged. According to the utility model, the technical problem of reducing the impact load of the riveter to improve the dismounting quality of the interference hole fastener on the premise of not changing the existing assembling tool is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft assembly, in particular to a fastener removal device with controllable impact load. Background Art

[0002] In the current aircraft assembly field, a large number of fastener holes are made as interference holes to achieve tight connections between components. When removing such fasteners, they need to be knocked back from the tail end of the fastener. This process can easily cause damage to the fastener and the surrounding area. Therefore, the technical problem of how to reduce the impact load when removing interference hole fasteners with a rivet gun is of great significance.

[0003] The current mainstream method for removing fasteners in interference holes is to use tools such as rivet guns or hammers to knock them, while using pressure-sensitive tape to protect the fasteners to a certain extent, and using impact load to hit the end of the fastener to remove it from the interference hole. However, this method still has shortcomings, including: pressure-sensitive tape cannot provide comprehensive protection; pure metal tools can easily damage fasteners and parts, and non-metallic tools are not strong enough; the adjustment of the impact load of the rivet gun depends on the operator's experience, and stability cannot be guaranteed; the direction of the impact load is difficult to ensure that it is parallel to the axis of the fastener. Utility Model Content

[0004] The purpose of the present application is to provide a fastener removal device with controllable impact load, which solves the technical problem of reducing the impact load of the rivet gun to improve the removal quality of interference hole fasteners without changing the existing assembly tools.

[0005] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0006] The utility model provides a fastener removal device with controllable impact load, comprising a sleeve, the sleeve comprising a sleeve cover and a sleeve body, a limiting collar is provided on the top of the sleeve body, a groove matching the limiting collar is provided on the bottom of the sleeve cover, and the groove and the limiting collar are threadedly connected; a rivet through hole is provided on the sleeve cover, and a fastener through hole is provided on the sleeve body; an elastic member is provided between the sleeve cover and the sleeve body, a buffer member is connected to the bottom of the elastic member, and the buffer member can move in the fastener through hole; the rivet through hole, the fastener through hole, the elastic member and the buffer member are coaxially arranged.

[0007] In some embodiments, the elastic member includes a force-bearing plate, a spring and a base, and the force-bearing plate, spring and base are coaxially arranged; the force-bearing plate is fixedly established on the top of the spring, and the base is fixedly established on the bottom of the spring; a slot is provided at the bottom of the base, and the buffer member is fixed in the elastic member through the slot; the force-bearing plate is fixed between the limiting ring and the groove, and the spring and the base can move in the fastener through hole.

[0008] In some embodiments, the buffer member is a nylon head.

[0009] In some embodiments, the inner diameter of the limiting collar is larger than the inner diameter of the fastener through hole.

[0010] In some embodiments, the inner diameter of the groove is larger than the inner diameter of the rivet hole.

[0011] In some embodiments, a buffer gasket is provided at the bottom of the sleeve.

[0012] In some embodiments, the buffer gasket is a rubber ring.

[0013] The technical solution of this application has at least the following advantages and beneficial effects:

[0014] 1. This device reduces the impact load intensity by combining elastic components with buffer components, effectively protecting the workpiece surface and fasteners. It can be used directly with existing tools, improving work efficiency. The device is easy to operate and can help operators remove fasteners efficiently and stably.

[0015] 2. The rivet card hole and the fastener through hole of the device are coaxially arranged, ensuring that the force direction of the impact load is parallel to the axis of the fastener, reducing damage to the interference hole wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural diagram of the utility model;

[0017] Figure 2 It is an overall cross-sectional view of the utility model;

[0018] Figure 3 It is an exploded view of the utility model;

[0019] Figure 4 It is a front exploded cross-sectional view of the present invention.

[0020] In the figure: 1-sleeve cover, 2-elastic member, 3-buffer member, 4-limiting collar, 5-sleeve body, 6-rivet card hole, 7-groove, 8-fastener through hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. Terms such as "center," "upper," "lower," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the figures, or the positions or locations in which the product is typically placed when in use. These terms are used solely for ease of description and simplification of the present application. They do not indicate or imply that the device or component referred to must have a specific position, be constructed, or operate in a specific orientation, and are not to be construed as limiting the present application. It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections or indirect connections through an intermediary; or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application in specific contexts.

[0023] Example 1

[0024] Please refer to Figures 1-4 The utility model provides an impact load controllable fastener removal device, which is the same as the prior art and includes a sleeve, which includes a sleeve cover 1 and a sleeve body 5. A limiting collar 4 is provided on the top of the sleeve body 5, and a groove 7 matching the limiting collar 4 is provided on the bottom of the sleeve cover 1. The groove 7 and the limiting collar 4 are threadedly connected; the sleeve cover 1 is provided with a rivet card hole 6, and the sleeve body 5 is provided with a fastener through hole 8.

[0025] It should be noted that the inner diameter of the limiting collar 4 is larger than the inner diameter of the fastener through hole 8 ; the inner diameter of the groove 7 is larger than the inner diameter of the rivet card hole 6 .

[0026] In this embodiment, a buffer gasket is provided at the bottom of the sleeve body 5. The buffer gasket is a rubber ring and is used to prevent the sleeve from damaging the surface of the workpiece during the removal process.

[0027] Different from the prior art, an elastic part 2 and a buffer part 3 are arranged between the sleeve cover 1 and the sleeve body 5. The elastic part 2 includes a force-bearing plate, a spring and a base, and the force-bearing plate, the spring and the base are coaxially arranged; the force-bearing plate is fixedly set at the top of the spring, and the base is fixedly set at the bottom of the spring; a slot is provided at the bottom of the base, and the buffer part 3 is fixed in the elastic part 2 through the slot; the step formed by the different inner diameters of the limiting ring 4 and the fastener through hole 8 supports the force-bearing plate, and the spring, the base and the buffer part 3 can move in the fastener through hole 8.

[0028] In this embodiment, the buffer member 3 is a nylon head.

[0029] It should be noted that the rivet card hole 6, the fastener through hole 8, the elastic member 2 and the buffer member 3 are coaxially arranged to ensure that the direction of the impact load is parallel to the fastener axis, thereby reducing damage to the interference hole wall.

[0030] Specifically, the rivet clamp contacts the elastic part 2 through the rivet clamp hole 6, and the fastener contacts the buffer part 3 through the fastener through hole 8; the rivet gun applies an impact load to the elastic part 2 through the rivet clamp, and the impact load passes through the elastic part 2 and the buffer part 3 in turn, and finally acts on the fastener, causing the fastener to detach from the interference hole.

[0031] It should be noted that the cooperation between the elastic member 2 and the buffer member 3 effectively reduces the impact load intensity and protects the fastener from the influence of excessive impact force.

[0032] The utility model has a simple structure and is easy to process. The buffer member 3 can be freely replaced after being damaged, and the cost is low.

[0033] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details known in the art have been omitted. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A fastener removal device with controllable impact load, comprising a sleeve, the sleeve comprising a sleeve cover (1) and a sleeve body (5), a limit collar (4) being provided on the top of the sleeve body (5), a groove (7) matching the limit collar (4) being provided on the bottom of the sleeve cover (1), the groove (7) and the limit collar (4) being threadedly connected; a rivet hole (6) being provided on the sleeve cover (1), and a fastener through hole (8) being provided on the sleeve body (5); and characterized in that: An elastic member (2) is provided between the sleeve cover (1) and the sleeve body (5); a buffer member (3) is connected to the bottom of the elastic member (2); and the buffer member (3) is movable in the fastener through hole (8); the rivet card hole (6), the fastener through hole (8), the elastic member (2) and the buffer member (3) are coaxially arranged.

2. The impact load controllable fastener removal device according to claim 1, characterized in that: The elastic member (2) comprises a force-bearing plate, a spring and a base, wherein the force-bearing plate, the spring and the base are coaxially arranged; the force-bearing plate is fixedly set on the top of the spring, and the base is fixedly set on the bottom of the spring; a slot is provided at the bottom of the base, and the buffer member (3) is fixed in the elastic member (2) through the slot; the force-bearing plate is fixed between the limiting ring (4) and the groove (7), and the spring and the base can move in the fastener through hole (8).

3. The impact load controllable fastener removal device according to claim 1, characterized in that: The buffer member (3) is a nylon head.

4. The impact load controllable fastener removal device according to claim 1, characterized in that: The inner diameter of the limiting collar (4) is greater than the inner diameter of the fastener through hole (8).

5. The impact load controllable fastener removal device according to claim 1, characterized in that: The inner diameter of the groove (7) is larger than the inner diameter of the rivet hole (6).

6. The impact load controllable fastener removal device according to claim 1, characterized in that: A buffer gasket is provided at the bottom of the sleeve body (5).

7. The impact load controllable fastener removal device according to claim 6, characterized in that: The buffer gasket is a rubber ring.

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