Bush dismounting device and bush dismounting method

Abstract

The invention belongs to the technical field of machining, and discloses a bushing dismounting device and a bushing dismounting method. The bushing dismounting device comprises a screw rod, an abutting and pushing piece, a driving structure and an auxiliary piece, the auxiliary piece is arranged to provide counter-acting force, the driving structure is arranged to be matched with the auxiliary piece so as to drive the screw rod to move in the axis direction of a bushing to be dismounted, the screw rod moves to enable the abutting and pushing piece to abut and push the bushing to be dismounted, and therefore the bushing to be dismounted and a mounting body are separated; the screw and the to-be-disassembled bushing are only subjected to axial load and do not generate relative displacement, the mounting main body and the to-be-disassembled bushing are prevented from being damaged, the driving structure is used for driving, the operation is simple, time and labor are saved, and the disassembling efficiency is improved. According to the method, pulling force is provided through the hydraulic gun to pull the screw rod so that the abutting and pushing piece can eject the to-be-detached lining out, or pressure is applied to the screw rod through the press machine so that the abutting and pushing piece can eject the to-be-detached lining out, and operation can be carried out in a small operation space; and a pulling or pressing mode is adopted to adapt to different working conditions, and adaptability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a bushing disassembly device and a bushing disassembly method. Background Art

[0002] In the process of aircraft manufacturing and assembly, bushings are often used in joints to improve the fatigue and wear resistance of the joints. During the assembly and use of bushings, bushings need to be removed and replaced due to factors such as improper bushing installation, bushing wear, and external impact damage.

[0003] In the prior art, a bushing to be removed is provided on the installation body, and the bushing to be removed is sleeved on the threaded rod, and a guide sleeve and a guide sleeve are respectively installed on both sides of the bushing to be removed, and a push piece is set to tighten, so that the guide sleeve is pressed against the installation body; the push piece is manually rotated continuously to tighten the guide sleeve and move the bushing to be removed, so that the bushing to be removed is separated from the installation body. In the process of rotating the push piece, the bushing and the bushing removal tool are very likely to rotate relative to each other, thereby damaging the surface of the bushing or the bushing removal tool, and the manual rotation removal efficiency is low.

[0004] That is, the existing bushing removal has the disadvantages that when the push piece is manually rotated, relative rotation between the bushing and the bushing removal tool is very likely to occur, thereby damaging the surface of the bushing or the bushing removal tool, and the removal efficiency is low. Summary of the invention

[0005] The object of the present invention is to provide a bushing disassembly device and a bushing disassembly method to solve the problem that in the existing bushing disassembly, when the push piece is manually rotated, relative rotation between the bushing and the bushing removal tool is very easy to occur, thereby causing damage to the surface of the bushing or the bushing removal tool, and the disassembly efficiency is low.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The present invention provides a bushing disassembly device, which comprises:

[0008] A screw rod, used for being movably inserted into the bushing to be removed;

[0009] A push piece, the push piece is connected to the screw rod, and the push piece is used to push the bushing to be removed;

[0010] A driving structure, connected to the screw rod, and used to drive the screw rod to move along the axial direction of the bushing to be removed;

[0011] The auxiliary member is used to be arranged between the installation body and the driving structure to provide a reaction force for removing the bushing to be removed from the installation body.

[0012] As an optional technical solution for a bushing removal device, the driving structure includes:

[0013] An external sleeve, one end of the auxiliary member is connected to the external sleeve, and the other end of the auxiliary member is used to abut against the installation body;

[0014] The driving assembly is arranged in the outer sleeve and is used for providing a pulling force to drive the screw to move in a direction away from the bushing to be removed.

[0015] As an optional technical solution for a bushing removal device, the driving structure includes:

[0016] A fixing surface, one end of the auxiliary member is against the fixing surface and the other end is used to abut against the installation body;

[0017] The pressure head is connected to the screw rod and is used to provide pressure to drive the screw rod to move toward the direction close to the bushing to be removed.

[0018] As an optional technical solution of the bushing removal device, the push member includes:

[0019] An isolating cylinder, the screw rod is inserted into the isolating cylinder, and the isolating cylinder is used to be inserted into the bushing to be removed to separate the bushing to be removed from the screw rod;

[0020] The push cylinder portion is arranged on the isolation cylinder portion and connected to the screw rod, and is used for pushing the bushing to be removed.

[0021] As an optional technical solution for a bushing removal device, the outer diameter of the isolation cylinder is smaller than the inner diameter of the bushing to be removed, and the outer diameter of the push cylinder is smaller than the outer diameter of the bushing to be removed and larger than the inner diameter of the bushing to be removed.

[0022] As an optional technical solution for a bushing removal device, the inner diameter of the push cylinder is smaller than the inner diameter of the isolation cylinder.

[0023] As an optional technical solution of a bushing disassembly device, the push member is detachably connected to the screw rod.

[0024] As an optional technical solution for a bushing removal device, the auxiliary part is cylindrical, the auxiliary part is at least partially sleeved on the outside of the screw, and the axial direction of the auxiliary part is the same as the moving direction of the screw.

[0025] As an optional technical solution for the bushing removal device, a flange is provided at the end of the auxiliary component to increase the contact area.

[0026] The present invention provides a bushing disassembly method, using the bushing disassembly device, including the following methods:

[0027] Method 1: A hydraulic gun is used as the driving structure, the hydraulic gun is used to provide a pulling force to drive the screw to move in a direction away from the bushing to be removed, and the push member pushes out the bushing to be removed;

[0028] Method 2: A press is used as the driving structure, the press is used to provide pressure to drive the screw to move toward the direction close to the bushing to be removed, and the push member pushes out the bushing to be removed.

[0029] Beneficial effects:

[0030] The present invention provides a bushing disassembly device, which includes a screw, a push piece, a driving structure and an auxiliary piece. The auxiliary piece is provided to provide a reaction force, and the driving structure is provided to cooperate with the auxiliary piece, thereby driving the screw to move along the axial direction of the bushing to be disassembled. The movement of the screw causes the push piece to push the bushing to be disassembled, thereby realizing the separation of the bushing to be disassembled and the installation body; the screw and the bushing to be disassembled are only subjected to axial loads and no relative displacement occurs, thereby avoiding damage to the installation body and the bushing to be disassembled; the screw and the bushing to be disassembled are driven by the driving structure, the operation is simple, time-saving and labor-saving, and the disassembly efficiency is improved.

[0031] The present invention provides a bushing disassembly method, which adopts the above-mentioned bushing disassembly device, and uses a hydraulic gun to provide a pulling force to pull the screw rod so that the push piece pushes out the bushing to be disassembled, or uses a press to apply pressure to the screw rod so that the push piece pushes out the bushing to be disassembled, and can be performed in a smaller operating space; the method adopts the form of pulling or pressing to adapt to different working conditions, and has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a cross-sectional view of a bushing removal device, a bushing to be removed, and an installation body provided in Embodiment 1 of the present invention;

[0033] Figure 2 It is a cross-sectional view of a bushing removal device, a bushing to be removed, and an installation body provided in the second embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the thrust member provided in Embodiment 1 and Embodiment 2 of the present invention.

[0035] In the figure:

[0036] 1. Screw; 2. Push member; 21. Isolation cylinder; 22. Push cylinder; 3. Driving structure; 4. Auxiliary parts; 5. Bushing to be removed; 6. Installation body. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] Embodiment 1

[0042] like Figure 1 and Figure 3As shown, this embodiment provides a bushing disassembly device for disassembling a bushing 5 to be disassembled which is arranged on a mounting body 6. The bushing disassembly device includes a screw 1, a push member 2, a driving structure 3 and an auxiliary member 4. The screw 1 is movably arranged in the bushing 5 to be disassembled; the push member 2 is connected to the screw 1, and the push member 2 is used to push the bushing 5 to be disassembled; the driving structure 3 is connected to the screw 1, and the driving structure 3 is used to drive the screw 1 to move along the axial direction of the bushing 5 to be disassembled; the auxiliary member 4 is used to be arranged between the mounting body 6 and the driving structure 3 to provide a reaction force to disassemble the bushing 5 to be disassembled from the mounting body 6.

[0043] The bushing removal device provided in this embodiment provides a reaction force by setting an auxiliary part 4, and sets a driving structure 3 to cooperate with the auxiliary part 4, so as to drive the screw 1 to move along the axial direction of the bushing 5 to be removed. The movement of the screw 1 causes the push part 2 to push the bushing 5 to be removed, thereby realizing the separation of the bushing 5 to be removed and the installation body 6; the screw 1 and the bushing 5 to be removed are only subjected to axial load and no relative displacement occurs, thereby avoiding damage to the installation body 6 and the bushing 5 to be removed. It is driven by the driving structure 3, the operation is simple, time-saving and labor-saving, and the disassembly efficiency is improved.

[0044] The bushing 5 to be removed is a flange bushing; for ease of description, the end side of the flange bushing facing the flange is called the first side, and the side opposite to the flange is called the second side; the driving structure 3 and the auxiliary member 4 are located on the first side, and the push member 2 is located on the second side; the outer diameter of the screw 1 is smaller than the inner diameter of the bushing 5 to be removed. In other embodiments, the bushing 5 to be removed may also be cylindrical.

[0045] Furthermore, the driving structure 3 includes an external sleeve and a driving assembly, one end of the auxiliary member 4 is connected to the external sleeve, and the other end of the auxiliary member 4 is used to abut against the installation body 6; the driving assembly is arranged in the external sleeve to provide a pulling force to drive the screw 1 to move in a direction away from the bushing 5 to be removed. In this embodiment, the driving structure 3 is a hydraulic gun; one end of the screw 1 is threadedly connected to the driving assembly.

[0046] Furthermore, the push member 2 includes an isolation cylinder 21 and a push cylinder 22. The screw 1 is inserted into the isolation cylinder 21. The isolation cylinder 21 is used to be inserted into the bushing 5 to be removed to separate the bushing 5 from the screw 1. The push cylinder 22 is provided in the isolation cylinder 21 and connected to the screw 1, and is used to push the bushing 5 to be removed. By inserting the isolation cylinder 21 into the bushing 5 to be removed and inserting the screw 1 into the isolation cylinder 21, the screw 1 is separated from the bushing 5 to be removed, and the surface of the bushing 5 to be removed is further protected.

[0047] Specifically, the outer diameter of the isolation cylinder 21 is smaller than the inner diameter of the bushing 5 to be removed, and the outer diameter of the push cylinder 22 is smaller than the outer diameter of the bushing 5 to be removed and larger than the inner diameter of the bushing 5 to be removed. The inner diameter of the push cylinder 22 is smaller than the inner diameter of the isolation cylinder 21. By setting the push member 2 in a stepped shape, that is, the outer diameter of the push cylinder 22 is larger than the outer diameter of the isolation cylinder 21, a push surface is formed at the connection between the isolation cylinder 21 and the push cylinder 22, and the abutment surface is annular so that the bushing 5 to be removed is evenly stressed, avoiding the bushing 5 to be removed from getting stuck and difficult to remove due to uneven force. By setting the inner diameter of the push cylinder 22 to be smaller than the inner diameter of the isolation cylinder 21, a gap is left between the screw 1 and the isolation cylinder 21, avoiding the driving structure 3 from affecting the isolation cylinder 21 when driving the screw 1 to move, thereby wearing the inner surface of the bushing 5 to be removed.

[0048] Preferably, the push piece 2 is detachably connected to the screw rod 1. By setting the push piece 2 to be detachably connected to the screw rod 1, it is convenient to replace the push piece 2 to meet the disassembly of the bushings 5 ​​to be disassembled of different sizes, saving costs; once the size difference of different bushings 5 ​​to be disassembled is too large, the screw rod 1 and the push piece 2 are replaced. In this embodiment, the screw rod 1 is threadedly connected to the push barrel 22. In other embodiments, the push piece 2 can also be set to be disc-shaped, and the push piece 2 is set at the end of the screw rod 1 and radially protrudes from the outer surface of the screw rod 1.

[0049] Furthermore, the auxiliary member 4 is cylindrical, and at least part of the auxiliary member 4 is sleeved outside the screw 1, and the axial direction of the auxiliary member 4 is the same as the moving direction of the screw 1. By providing the cylindrical auxiliary member 4 and the axial direction of the auxiliary member 4 being the same as the moving direction of the screw 1, the auxiliary member 4 provides a uniform reaction force, which facilitates smooth disassembly.

[0050] Preferably, a flange is provided at the end of the auxiliary member 4 to increase the contact area. Increasing the contact area by providing a flange is conducive to ensuring the stability of the auxiliary member 4. In this embodiment, one end of the auxiliary member 4 is threadedly connected to the external sleeve of the driving structure 3, and the flange of the auxiliary member 4 abuts against the surface of the installation body 6. In other embodiments, the two ends of the auxiliary member 4 may also be arranged to abut against the external sleeve and the installation body 6 respectively.

[0051] This embodiment also provides a bushing disassembly method 1, which uses a hydraulic gun as a driving structure 3. The hydraulic gun is used to provide a pulling force to drive the screw rod 1 to move in a direction away from the bushing 5 to be disassembled, and the push member 2 pushes out the bushing 5 to be disassembled. The bushing disassembly method uses the above-mentioned bushing disassembly device, and the hydraulic gun provides a pulling force to pull the screw rod 1 so that the push member 2 pushes out the bushing 5 to be disassembled, which can be performed in a smaller operating space; the pulling form can be applied to two situations: the installation body 6 is installed on the machine body or the installation body 6 is removed from the machine body as a bushing part, and there is no need to deliberately remove the installation body 6 from the machine body, which saves time and improves disassembly efficiency.

[0052] The following is the detailed installation and use process of the device in this embodiment:

[0053] First, threadably connect the screw 1 to the driving assembly of the driving structure 3, threadably connect one end of the auxiliary component 4 to the external sleeve of the driving structure 3, and insert the screw 1 into the bushing 5 to be removed from the first side until the other end of the auxiliary component 4 abuts against the mounting body 6. The push component 2 is installed on the screw 1 on the second side and threadably connected to the screw 1 until the push surface of the push component 2 fits the bushing 5 to be removed. Adjust so that the moving direction of the screw 1 is the same as the axial direction of the bushing 5 to be removed.

[0054] Start the hydraulic gun to drive the screw 1 to move in the direction away from the push piece 2. Driven by the screw 1, the push piece 2 presses the bushing 5 to be removed toward the first side, thereby pushing out the bushing 5 to be removed. The removed bushing 5 to be removed is still mounted on the screw 1 to prevent parts from scattering. Unscrew the push piece 2 from the screw 1 to take out the bushing 5 to be removed, and repeat the above steps to perform the next disassembly operation.

[0055] Embodiment 2

[0056] like Figure 2 and Figure 3 As shown, the bushing removal device of the first embodiment realizes the removal in the form of pulling. Compared with the first embodiment, the driving structure 3 of the bushing removal device of the second embodiment is arranged on the second side of the bushing 5 to be removed and realizes the removal in the form of pressing. In this embodiment, the auxiliary member 4 is located on the first side, and the push member 2 is located on the second side; the driving structure 3 includes a fixed surface and a pressure head, one end of the auxiliary member 4 is against the fixed surface and the other end is used to abut on the installation body 6; the pressure head is connected to the screw 1, which is used to provide pressure to drive the screw 1 to move in the direction close to the bushing 5 to be removed. The fixed surface and the pressure head are respectively located on both sides of the installation body 6, and a flange is provided at one end of the auxiliary member 4, and the flange abuts on the fixed surface.

[0057] This embodiment also provides a second bushing removal method, which uses a press as a driving structure 3. The press is used to provide pressure to drive the screw 1 to move toward the direction close to the bushing 5 to be removed, and the push piece 2 pushes out the bushing 5 to be removed. The bushing removal method uses the above-mentioned bushing removal device, and the press provides a pulling force to pull the screw 1 so that the push piece 2 pushes out the bushing 5 to be removed, which can be performed in a smaller operating space; the use of pressure can be applied to the situation where the installation body 6 is removed from the body as a bushing part.

[0058] The following is the detailed installation and use process of the device in this embodiment:

[0059] First, install the push member 2 on the screw 1 and threadedly connect it to the screw 1, place one end of the auxiliary member 4 on the fixed surface, and the other end of the auxiliary member 4 rests on the installation body 6, and insert the screw 1 into the bushing 5 to be removed from the second side until the push member 2 fits the bushing 5 to be removed, and thread the screw 1 with the pressure head of the driving structure 3.

[0060] Start the press to drive the screw 1 to move toward the direction close to the bushing 5 to be removed. Driven by the screw 1, the push member 2 presses the bushing 5 to be removed toward the first side, thereby ejecting the bushing 5 to be removed. The removed bushing 5 to be removed falls into the interior of the auxiliary member 4 to avoid parts scattering. The above steps can be repeated to perform the next disassembly operation.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bushing removal device, characterized in that: include: A screw (1) is used to be movably inserted into a bushing (5) to be removed; A push member (2), the push member (2) being connected to the screw rod (1), and the push member (2) being used to push the bushing (5) to be removed; A driving structure (3) connected to the screw rod (1) and used to drive the screw rod (1) to move along the axial direction of the bushing (5) to be removed; An auxiliary component (4) is used to be arranged between the installation body (6) and the driving structure (3) to provide a reaction force for removing the bushing (5) to be removed from the installation body (6).

2. The bushing removal device according to claim 1, characterized in that: The driving structure (3) comprises: an external sleeve, one end of the auxiliary component (4) being connected to the external sleeve, and the other end of the auxiliary component (4) being used to abut against the mounting body (6); A driving assembly is arranged in the outer sleeve and is used to provide a pulling force so as to drive the screw rod (1) to move in a direction away from the bushing (5) to be removed.

3. The bushing removal device according to claim 1, characterized in that: The driving structure (3) comprises: A fixing surface, one end of the auxiliary component (4) abuts against the fixing surface and the other end is used to abut against the mounting body (6); A pressure head is connected to the screw rod (1) and is used to provide pressure to drive the screw rod (1) to move in a direction close to the bushing (5) to be removed.

4. The bushing removal device according to claim 1, characterized in that: The push member (2) comprises: an isolating cylinder (21), the screw (1) being inserted into the isolating cylinder (21), and the isolating cylinder (21) being used to be inserted into the bushing (5) to be removed so as to separate the bushing (5) to be removed from the screw (1); A push cylinder portion (22) is arranged on the isolation cylinder portion (21) and connected to the screw rod (1), and is used for pushing the bushing (5) to be removed.

5. The bushing removal device according to claim 4, characterized in that: The outer diameter of the isolation cylinder (21) is smaller than the inner diameter of the bushing (5) to be removed, and the outer diameter of the push cylinder (22) is smaller than the outer diameter of the bushing (5) to be removed and larger than the inner diameter of the bushing (5) to be removed.

6. The bushing removal device according to claim 4, characterized in that: The inner diameter of the push cylinder (22) is smaller than the inner diameter of the isolation cylinder (21).

7. The bushing removal device according to any one of claims 1 to 6, characterized in that: The push member (2) is detachably connected to the screw rod (1).

8. The bushing removal device according to any one of claims 1 to 6, characterized in that: The auxiliary component (4) is cylindrical in shape, and at least part of the auxiliary component (4) is sleeved outside the screw rod (1). The axial direction of the auxiliary component (4) is the same as the moving direction of the screw rod (1).

9. The bushing removal device according to claim 8, characterized in that: The end of the auxiliary component (4) is provided with a flange to increase the contact area.

10. A bushing disassembly method, characterized in that: The bushing removal device according to any one of claims 1 to 9 is used, comprising the following method: Method 1: A hydraulic gun is used as the driving structure (3), wherein the hydraulic gun is used to provide a pulling force to drive the screw (1) to move in a direction away from the bushing (5) to be removed, and the push member (2) pushes out the bushing (5) to be removed; Method 2: A press is used as the driving structure (3), the press is used to provide pressure to drive the screw (1) to move in a direction close to the bushing (5) to be removed, and the push member (2) pushes out the bushing (5) to be removed.

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