Tool for taking out nylon lining in metal pipe

Abstract

The utility model discloses a tool for taking out a nylon bushing in a metal pipe, which is characterized in that the tool comprises an outer sleeve (1), a connecting rod (2) is movably connected to the end part of the outer sleeve (1), a handle (3) is arranged at one end, positioned outside the outer sleeve (1), of the connecting rod (2), and a driving block (5) movably connected in an inner cavity of the outer sleeve (1) is arranged at the other end of the connecting rod (2); the driving block (5) comprises a circular truncated cone part (6) and a cylindrical part (7) which are connected with each other, two radial telescopic blocks (8) which are symmetrically and coaxially distributed are movably connected to the side wall of the outer sleeve (1), limiting pieces (9) are arranged at the ends, located in the outer sleeve (1), of the radial telescopic blocks (8), and springs (10) are connected to the radial telescopic blocks (8) in a sleeving mode. The spring (10) is located between the limiting piece (9) and the inner wall of the outer sleeve (1).

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of maintenance, repair tools, in particular to a kind of metal pipe inner nylon bushing extraction tool. BACKGROUND

[0002] Nylon bushing is widely used in electronic, hydraulic, machine tool and other industries and fields due to its insulation, weather resistance, rust resistance and other characteristics. In various structures, nylon bushing is often placed in metal pipe. After long-time work of equipment, the metal pipe around nylon bushing may be deformed or have temperature difference, which causes nylon bushing to be unable to be taken out. Thus, it is difficult to maintain and replace nylon bushing when it has problems.

[0003] The common method now is to bend the end of the metal wire into a V-shaped hook structure, and then hook the two hook structures in the inner hole on the inner wall of the nylon bushing. Then, the nylon bushing is pulled out of the metal pipe by the metal wire. This method is easy to damage the nylon bushing and increase the maintenance cost. In some cases, the simple tool cannot take out the nylon bushing from the metal pipe.

[0004] Therefore, there is a need for a method or device that can solve the above problems. SUMMARY

[0005] The utility model discloses to solve the above-mentioned deficiencies existing in prior art, propose a kind of tool, which is simple in structure, ingenious in design, reasonable in layout, can conveniently, quickly and reliably take out nylon bushing from metal pipe.

[0006] The technical solution of the utility model is as follows: a kind of metal pipe inner nylon bushing extraction tool, characterized by: the tool includes outer sleeve 1, and the end of outer sleeve 1 is movably connected with connecting rod 2, one end of connecting rod 2 located outside outer sleeve 1 is provided with handle 3, the other end of connecting rod 2 is provided with driving block 5 movably connected in the inner cavity of outer sleeve 1, driving block 5 includes circular platform 6 and cylindrical portion 7 connected with each other, two symmetrical and coaxial radial telescopic blocks 8 are movably connected on the side wall of outer sleeve 1, one end of radial telescopic block 8 located inside outer sleeve 1 is provided with limiting sheet 9, spring 10 is sleeved on radial telescopic block 8, spring 10 is located between limiting sheet 9 and the inner wall of outer sleeve 1,

[0007] Limiting sheet 9 is in contact with driving block 5, and driving inclined surface matched with circular platform 6 is arranged on limiting sheet 9.

[0008] Compared with prior art, the utility model has the following advantages:

[0009] This type of tool for removing nylon bushings from metal tubes is simple in structure, ingeniously designed, and rationally laid out. It addresses the problems of traditional nylon bushing removal processes and tools by incorporating a unique structure. A conical drive block converts the axial movement of the connecting rod into the radial movement of two telescopic blocks. After connecting the telescopic blocks to the nylon bushing, the bushing can be pulled out of the metal tube. It achieves a quick and secure connection with the nylon bushing, making operation very convenient. Furthermore, the nylon bushing is subjected to uniform force during the pulling process, preventing tearing or damage, and allowing for complete removal of the nylon bushing. Moreover, this tool is simple to manufacture and inexpensive, thus possessing numerous advantages and being particularly suitable for widespread application in this field, with a very broad market prospect. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0011] Figure 2 This is a schematic diagram of the structure of this utility model embodiment in its working state. Detailed Implementation

[0012] The specific embodiments of this utility model will be described below with reference to the accompanying drawings. Figure 1 , Figure 2 The image shows a tool for removing nylon bushings from metal tubes. It includes an outer sleeve 1 as a base, with a connecting rod 2 movably connected to one end of the outer sleeve 1. A handle 3 is provided on one end of the connecting rod 2 outside the outer sleeve 1, and a driving block 5 movably connected to the other end of the connecting rod 2 within the cavity of the outer sleeve 1. The driving block 5 includes a frustum 6 and a cylindrical portion 7 connected to each other. Two symmetrically arranged and coaxially distributed radial telescopic blocks 8 are movably connected to the side wall of the outer sleeve 1. A limiting piece 9 is provided at one end of each radial telescopic block 8 inside the outer sleeve 1, and a spring 10 is sleeved on each radial telescopic block 8, located between the limiting piece 9 and the inner wall of the outer sleeve 1.

[0013] The limiting piece 9 contacts the driving block 5, and the limiting piece 9 is provided with a driving inclined surface that matches the frustum portion 6.

[0014] The working process of the metal tube inner nylon bushing removal tool of this utility model embodiment is as follows: In the initial state, under the action of spring 10, the end of the radial telescopic block 8 is in the retracted state, and the limiting piece 9 is in contact with the outer wall of the cylindrical part 7 on the driving block 5.

[0015] When the nylon bushing 11 needs to be taken out of the metal pipe by using the tool, the operator holds the outer sleeve 1 and inserts the end of the outer sleeve 1 into the nylon bushing 11, and after the insertion is completed, the operator holds the handle 3 and pushes the connecting rod 2 to move, and the driving block 5 at the end of the connecting rod 2 moves towards the nylon bushing 11, and the contact position of the limiting piece 9 gradually transitions from the outer wall of the cylindrical part 7 to the outer wall of the circular table part 6, the inclined outer wall of the circular table part 6 pushes the driving slope on the limiting piece 9, and then pushes the radial telescopic block 8 to move towards the outer edge of the outer sleeve 1, and the protruding part of the radial telescopic block 8 enters the inner hole on the inner wall of the nylon bushing 11, and at this time, the tool is connected with the nylon bushing 11;

[0016] In the above-mentioned posture, the tool is pulled outwards, so that the nylon bushing 11 is pulled out of the metal pipe;

[0017] After the handle 3 is released, the limiting piece 9 extrudes the driving block 5 towards the central axis of the outer sleeve 1 under the action of the spring 10, until the limiting piece 9 is in contact with the outer wall of the cylindrical part 7 again, at this time, the radial telescopic block 8 is retracted into the inside of the outer sleeve 1, and the tool can be directly pulled out of the nylon bushing 11.

Claims

1. A metal tube-in-tube nylon bushing extraction tool characterized by: The tool comprises an outer sleeve (1), a connecting rod (2) movably connected to the end of the outer sleeve (1), a handle (3) arranged on one end of the connecting rod (2) outside the outer sleeve (1), a driving block (5) movably connected in the inner cavity of the outer sleeve (1) arranged on the other end of the connecting rod (2), the driving block (5) comprises a circular cone part (6) and a circular cylinder part (7) connected to each other, two symmetrical and coaxial radial telescopic blocks (8) movably connected on the side wall of the outer sleeve (1), a limiting sheet (9) arranged at one end of the radial telescopic block (8) inside the outer sleeve (1), a spring (10) sleeved on the radial telescopic block (8), the spring (10) is located between the limiting sheet (9) and the inner wall of the outer sleeve (1), The limiting sheet (9) is in contact with the driving block (5), and a driving inclined surface matched with the circular cone part (6) is arranged on the limiting sheet (9).

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