A bush dismounting tool

Abstract

The application relates to a bush dismounting tool, which solves the problems that a bush with a closed inner cavity is difficult to be forced from the inside, a conventional tool is easily interfered with a coaxial adjacent mounting seat and is easily damaged, and the application comprises a bearing part, a supporting part, an adjusting rod, a connecting part, a pull rod, an abutting part and a locking part, the bearing part comprises upper and lower pressing plates oppositely arranged along a direction perpendicular to the axial direction of the bush, the supporting part is arranged on the upper and lower pressing plates and abuts against the inner circumferential wall of the bush, the outer circumferential wall of the supporting part is provided with threads for engaging into the inner circumferential wall of the bush, the adjusting rod is arranged between the upper and lower pressing plates and drives the two to move towards or away from each other, thereby driving the supporting part to expand or contract along the radial direction of the bush, the pull rod is connected with the upper and lower pressing plates through the connecting part, the abutting part abuts against the end face of the outer mounting seat away from the bush, and the locking part abuts against the abutting part, so that the pull rod drives the supporting part to pull out the bush from the inner mounting seat, and the tool can be used for dismounting a bush with one side closed.

Description

Technical Field

[0001] This application relates to a disassembly tooling, specifically a bushing disassembly tooling. Background Technology

[0002] In the assembly and maintenance of modern vehicles, bushings are often installed inside mounting brackets to provide support, guidance, or cushioning. Bushings and mounting brackets typically use an interference fit to ensure a tight and stable connection.

[0003] However, in the process of developing this application, the inventors discovered at least the following problems in the prior art: For bushings with one side closed, since the closed side cannot provide a force application position, conventional disassembly tools are difficult to hold or grasp the bushing from the inside; especially when the bushing and the mounting base are in an interference fit, removing the bushing often requires destructive disassembly using tools such as chisels, hammers, and hammers, for example, chiseling open the bushing to create a through-hole before gradually removing it. In this process, on the one hand, because there are other mounting bases coaxially adjacent to the bushing to be disassembled, the operating tools are prone to interference with these other mounting bases, making destructive disassembly difficult; on the other hand, hammering operations are very likely to damage the mounting base itself, causing damage to the mounting base.

[0004] The above description is only for the purpose of helping to understand the technical problem to be solved by this application and does not constitute an endorsement of the prior art level before the creation of this application. Summary of the Invention

[0005] The technical problem this application aims to solve is that conventional disassembly tools are difficult to apply force from the inside for bushings with one side of the inner cavity closed, often requiring destructive disassembly using tools such as chisels or hammers. However, destructive disassembly is easily interfered with by adjacent coaxial mounting seats and can easily damage the mounting seats. Therefore, this application provides a bushing disassembly fixture that can perform non-destructive and smooth coaxial axial pulling of the bushing.

[0006] To address the aforementioned technical problems, in one aspect of this application, a bushing removal tooling is provided: A bushing removal tool is used to remove a bushing installed in an inner layer mounting seat. One end of the bushing is closed, and an outer layer mounting seat is coaxially provided on one side of the open end of the bushing in the inner layer mounting seat. The outer layer mounting seat is hollow. The bushing removal tool includes a load-bearing component, a supporting component, a driving component, a connecting component, a pull rod, an abutment component, and a locking component. The bearing assembly includes two bearing members, which are arranged opposite each other in a direction perpendicular to the bushing axis.

[0007] There are at least two supporting members, which are respectively disposed on the two bearing members. The supporting members are used to extend into the inner hole of the bushing and abut against the inner peripheral wall of the bushing. The outer periphery of the supporting members is provided with threads for engaging with the inner peripheral wall of the bushing.

[0008] The drive assembly includes an adjusting rod disposed between the two bearing members. One end of the adjusting rod is threadedly connected to one of the bearing members, and the other end of the adjusting rod abuts against the other bearing member. When the adjusting rod is rotated, it moves along a direction perpendicular to the axial direction of the bushing through the threaded connection, thereby driving the two bearing members to move towards or away from each other, thereby driving the supporting member to expand or contract radially along the bushing.

[0009] One end of the connector is provided with a through hole, and the connector is connected to the bearing component through the through hole by a fastener. A gap is left between the connector and the bearing component that can move along the bushing axis. The other end of the connector is provided with an internal thread.

[0010] The axial direction of the pull rod is consistent with the axial direction of the bushing. One end of the pull rod is connected to the connector through the internal thread, and the other end of the pull rod is a free end that extends outward from the bushing along the axial direction of the bushing. The free end is provided with a thread.

[0011] The abutment is disposed on the pull rod and is used to abut against the end face of the outer mounting base opposite to the bushing, and is coaxially aligned with the outer mounting base.

[0012] The locking element is a nut, which is located at the free end of the pull rod and threadedly connected to the free end. It is used to press against the abutment, so that the abutment abuts against the end face of the outer mounting seat away from the bushing, and the pull rod drives the support to pull the bushing outward, thereby pulling the bushing out of the inner mounting seat along the axial direction of the bushing.

[0013] Furthermore, the supporting member is an arc shape with a central angle of 90°.

[0014] Furthermore, the adjusting rod is provided with a radial protrusion that abuts against another of the bearing members.

[0015] Furthermore, the abutment is a positioning frame, which has a positioning hole and a plurality of positioning rods. The positioning rods are used to insert into the inner hole of the outer mounting base so that the abutment is coaxial with the outer mounting base.

[0016] Furthermore, the thread on the outer periphery of the support member is a metric thread, the specification of which is M60×2 and the thread angle is 60°.

[0017] Furthermore, the two support members are arranged opposite each other in the vertical direction.

[0018] Furthermore, the bushing is a nylon bushing.

[0019] Furthermore, the adjusting rod is provided with a through hole, and the bushing disassembly tool also includes a wrench screw, which passes through the through hole and is used to drive the adjusting rod to rotate.

[0020] Furthermore, one of the carriers is provided with a threaded hole, and one end of the adjusting rod is provided with a thread, which is screwed into the threaded hole.

[0021] Furthermore, the pull rod is provided with an operating hole for inserting an operating rod to drive the pull rod to rotate.

[0022] This application has the following beneficial effects: (1) Since the support member is used to extend into the inner hole of the bushing and abut against the inner peripheral wall of the bushing, and the outer periphery of the support member is provided with threads for engaging the inner peripheral wall of the bushing, and the support member is pulled out of the bushing along the axial direction of the bushing by the pull rod, the bushing closed on one side of the inner cavity can be pulled out from the open side along the axial direction without destructive disassembly, thus overcoming the problems of not being able to apply force from the inside of the closed inner cavity and the difficulty of destructive disassembly operation.

[0023] (2) Since the abutting member is used to abut against the end face of the outer mounting seat away from the bushing and is coaxially aligned with the outer mounting seat, when the pull rod pulls the supporting member, it can use the outer mounting seat coaxially adjacent to the bushing as the force fulcrum to apply force smoothly, avoiding the problem of interference between the tool and the coaxially adjacent mounting seat during destructive disassembly. Moreover, the coaxial alignment allows the bushing to be pulled out smoothly along the axial direction, reducing the risk of bushing skew damage.

[0024] (3) Since the locking member presses against the abutting member and the pull rod drives the supporting member to pull out of the bushing, compared with the destructive method of using a steel chisel or hammer, this application uses static traction, which avoids tool interference and avoids damage to the mounting seat caused by hammering impact. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the mating relationship between the bushing and the inner and outer mounting bases in the embodiments of this application; Figure 2 This is a schematic diagram of the overall structure of the bushing removal tool in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the support member in the embodiments of this application; Figure 4 This is a schematic diagram of the adjusting rod in an embodiment of this application; Figure 5 This is a schematic diagram of the connector structure in an embodiment of this application; Figure 6 This is a schematic diagram of the tie rod structure in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the abutment component in an embodiment of this application; Figure 8 This is a schematic diagram showing the usage state of the bushing removal tool in the embodiments of this application.

[0026] Figure Labels

[0027] 1-Bushing; 2-Inner layer mounting base; 3-Outer circular surface of the bushing; 4-Inner peripheral wall of the bushing; 5-Inner circular surface of the inner layer mounting base; 6-Outer layer mounting base; 10-Upper pressure plate; 11-Lower pressure plate; 12-Pull head fixing block; 20 - Support component; 21 - Thread; 22 - Welding surface; 30 - Adjusting rod; 31 - Thread at the front end of the adjusting rod; 32 - Boss; 33 - Through hole for the adjusting rod; 34 - Wrench screw; 35 - Wrench screw nut; 40 - Connector; 41 - Internal thread; 42 - Through hole; 50 - Pull rod; 51 - Pull rod No. 1 thread end; 52 - Pull rod No. 2 thread end; 53 - Pull rod operating hole; 60 - Abutment part; 61 - Positioning hole; 62 - Positioning rod; 63 - Positioning plate; 70 - Locking component; 80 - Bearing component bolt; 81 - Bearing component nut. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] One embodiment of this application provides a bushing removal tool for removing a bushing 1 installed within an inner mounting base 2. (See reference...) Figure 1 The bushing 1 is used for support, guidance, or cushioning. The bushing 1 and the inner mounting base 2 are usually interference-fitted to ensure a tight and stable connection. One end of the bushing 1 is closed, meaning the bushing 1 has a single-sided closed structure, and the closed end of the bushing 1 cannot provide a position for applying force. The inner mounting base 2 is coaxially provided with an outer mounting base 6 located on one side of the open end of the bushing 1. The outer mounting base 6 is hollow, thus forming a channel for disassembly tools to be inserted.

[0032] refer to Figure 2 The bushing disassembly fixture includes a bearing component, a support component 20, a drive assembly, a connector 40, a pull rod 50, an abutment component 60, and a locking component 70.

[0033] The bearing components include an upper pressure plate 10 and a lower pressure plate 11, which are arranged opposite each other in a direction perpendicular to the axial direction of the bushing 1. The upper pressure plate 10 and the lower pressure plate 11 are connected by bearing bolts 80 and bearing nuts 81. The bearing bolts 80 pass through corresponding through holes on the upper pressure plate 10 and the lower pressure plate 11 and are locked by the bearing nuts 81. A pull head fixing block 12 is also provided on each side of the upper pressure plate 10 and the lower pressure plate 11, which is used to support the support member 20. The bearing components, including the upper pressure plate 10 and the lower pressure plate 11, are the two bearing components referred to in this application.

[0034] There are at least two supporting members 20, respectively disposed on the upper pressure plate 10 and the lower pressure plate 11, that is, each of the upper pressure plate 10 and the lower pressure plate 11 is provided with at least one supporting member 20. (Reference) Figure 3The support member 20 is used to extend into the inner hole of the bushing 1 and abut against the inner peripheral wall 4 of the bushing 1. The outer periphery of the support member 20 is provided with threads 21 for engaging with the inner peripheral wall 4 of the bushing 1. The support member 20 is fixed to the pull head fixing block 12, for example, the support member 20 is welded to the pull head fixing block 12, and the welding surface 22 of the support member 20 is welded to the pull head fixing block 12. In this embodiment, there are two support members 20, which are respectively provided on the upper pressure plate 10 and the lower pressure plate 11. The support member 20 is an arc shape with a central angle of 90°. That is, the support member 20 is a 90° arc threaded ring, the welding surface 22 of the support member 20 is arc-shaped, and the support member 20 is provided with continuous threads 21 along its arc direction. The thread 21 on the outer circumference of the support member 20 is a metric thread with a specification of M60×2 and a thread angle of 60°. The support member 20 is made of seamless steel pipe with an outer diameter of Φ60, so that it can fit the inner circumferential wall 4 of the bushing 1.

[0035] The drive assembly includes an adjusting lever 30. (Reference) Figure 4 An adjusting rod 30 is disposed between the upper pressure plate 10 and the lower pressure plate 11 in a direction perpendicular to the axial direction of the bushing 1. One end of the adjusting rod 30 is threadedly connected to the lower pressure plate 11, and the other end of the adjusting rod 30 abuts against the upper pressure plate 10. When the adjusting rod 30 is rotated, it moves in a direction perpendicular to the axial direction of the bushing 1 through its threaded connection with the lower pressure plate 11, thereby causing the upper pressure plate 10 and the lower pressure plate 11 to move towards or away from each other, and further causing the supporting members 20 disposed on the upper pressure plate 10 and the lower pressure plate 11 to expand or contract radially along the bushing 1. In this embodiment, the adjusting rod 30 abuts against the upper pressure plate 10 through a boss 32, that is, the adjusting rod 30 is provided with a boss 32, and the boss 32 abuts against the upper pressure plate 10. The end of the adjusting rod 30 away from the boss 32 is provided with an adjusting rod front thread 31, which is used for threaded connection with the lower pressure plate 11. The lower pressure plate 11 is provided with a threaded hole. The thread 31 at the front end of the adjusting rod is screwed into the threaded hole of the lower pressure plate 11, thereby connecting the adjusting rod 30 to the lower pressure plate 11. When the adjusting rod 30 is rotated, it moves relative to the lower pressure plate 11 in a direction perpendicular to the axial direction of the bushing 1 via the thread 31 at the front end of the adjusting rod, and drives the upper pressure plate 10 to move via the boss 32, thereby causing the upper pressure plate 10 to move towards or away from the lower pressure plate 11. The adjusting rod 30 is also provided with an adjusting rod through hole 33. The bushing disassembly tool also includes a wrench screw 34. The wrench screw 34 passes through the adjusting rod through hole 33 and is used to drive the adjusting rod 30 to rotate. One end of the wrench screw 34 is provided with a thread and is locked by a wrench screw nut 35. The other end of the wrench screw 34 is provided with a boss, which is used to prevent the wrench screw 34 from coming out of the adjusting rod through hole 33. The operator can drive the adjusting rod 30 to rotate by turning the wrench screw 34.

[0036] One end of the connector 40 is provided with a connector through hole 42. The connector 40 is connected to the upper pressure plate 10 and the lower pressure plate 11 through the connector through hole 42 by a bearing bolt 80. The bearing bolt 80 passes through the connector through hole 42 and the corresponding through holes on the upper pressure plate 10 and the lower pressure plate 11, and is locked by a bearing nut 81. A gap is left between the connector 40 and the upper pressure plate 10 and the lower pressure plate 11, allowing it to move axially along the bushing 1, thereby ensuring that the opening and pulling actions of the supporting member 20 can be completed independently. (Reference) Figure 5 The other end of the connector 40 is provided with an internal thread 41.

[0037] The axis of tie rod 50 is aligned with the axis of bushing 1. (Reference) Figure 6 One end of the pull rod 50 is connected to the connector 40 via the internal thread 41 of the connector, that is, the pull rod's first thread end 51 is screwed into the connector's internal thread 41. The other end of the pull rod 50 is a free end, extending outward from the bushing 1 along its axial direction. The free end of the pull rod 50 is threaded, that is, the pull rod's second thread end 52. The pull rod 50 is also provided with a pull rod operating hole 53, which is used to pass an operating rod to drive the pull rod 50 to rotate. By inserting the operating rod into the pull rod operating hole 53, a rotational torque can be applied to the pull rod 50, thereby controlling the rotation of the pull rod 50 and facilitating the screwing of the pull rod 50 into or out of the connector's internal thread 41.

[0038] Abutment 60 is disposed on the pull rod 50. Abutment 60 abuts against the end face of the outer mounting base 6 opposite to the bushing 1 and is coaxially aligned with the outer mounting base 6. (Reference) Figure 7 The abutment 60 and the pull rod 50 are clearance-fitted, with the pull rod 50 passing through the abutment 60. The abutment 60 includes a positioning plate 63, which has a positioning hole 61 and multiple positioning rods 62. The positioning hole 61 allows the pull rod 50 to pass through, and the positioning rods 62 are used to insert into the inner hole of the outer mounting base 6, thereby making the abutment 60 coaxial with the outer mounting base 6. The positioning plate 63 abuts against the end face of the outer mounting base 6 away from the bushing 1 to withstand the reaction force during pull-out.

[0039] The locking member 70 is located at the free end of the pull rod 50 and is threadedly connected to the second threaded end 52 of the pull rod 50. The locking member 70 is used to press against the abutment member 60, so that the positioning plate 63 of the abutment member 60 abuts against the end face of the outer mounting seat 6 away from the bushing 1, and causes the pull rod 50 to drive the supporting member 20 to pull the bushing 1 outward, thereby pulling the bushing 1 out of the inner mounting seat 2 along the axial direction of the bushing 1.

[0040] In this embodiment, the upper pressure plate 10 and the lower pressure plate 11 are arranged opposite each other in the vertical direction. That is, when the bushing removal fixture is in use, the upper pressure plate 10 and the lower pressure plate 11 are arranged in the vertical direction, the bushing 1 is installed in the vertical direction, and the adjusting rod 30 is arranged in the vertical direction. During use, the upper pressure plate 10 adheres to the boss 32 of the adjusting rod 30 under the action of gravity, and thus moves along with it under the action of the boss 32, which facilitates operation.

[0041] In this embodiment, the bushing 1 is a nylon bushing. The bushing 1 is made of nylon-like material, and the threads 21 on the outer periphery of the support member 20 can engage with the nylon material, thereby ensuring that the support member 20 provides reliable support to the inner peripheral wall 4 of the bushing 1.

[0042] The process of disassembling bushing 1 using the bushing disassembly fixture provided in this application is as follows (refer to...). Figure 8 ): Step 1: Use the drive assembly to drive the two support members 20 to retract, so that the two support members 20 can extend into the inner hole of the bushing 1, and put the two support members 20 into the bushing 1, so that the side of the two support members 20 is flush with the end face of one end of the bushing 1, so as to ensure that the support members 20 and the inner peripheral wall 4 of the bushing 1 are fully stressed in the width direction when the bushing 20 is stressed.

[0043] Step 2: Tighten the wrench screw 34, and the two supporting parts 20 will expand radially along the bushing 1 through the adjusting rod 30, so that the threads 21 on the outer periphery of the supporting parts 20 will gradually mesh into the inner peripheral wall 4 of the bushing 1, thereby supporting the bushing 1.

[0044] Step 3: Insert the first threaded end 51 of the pull rod 50 through the hole of the outer mounting base 6 and screw in the internal thread 41 of the connector. Fit the abutment 60 onto the pull rod 50, and insert the positioning rod 62 of the abutment 60 into the inner hole of the outer mounting base 6, so that the positioning plate 63 of the abutment 60 abuts against the end face of the outer mounting base 6 away from the bushing 1. Then, screw the locking member 70 onto the second threaded end 52 of the pull rod 50, and press the locking member 70 against the abutment 60. Continue to tighten the locking member 70. Since the abutment member 60 is abutting against the end face of the outer layer mounting base 6 and cannot move further, the tightening action is converted into a pulling force that pulls the pull rod 50 outward from the bushing 1. The pull rod 50 drives the upper pressure plate 10 and the lower pressure plate 11 to move outward from the bushing 1 through the connecting member 40, thereby driving the two supporting members 20 to pull the bushing 1 out of the inner layer mounting base 2 along the axial direction of the bushing 1.

[0045] Step 4: After the bushing 1 is pulled out from the inner mounting base 2, turn the wrench screw 34 in the opposite direction. This causes the two supporting members 20 to retract radially along the bushing 1 via the adjusting rod 30, allowing the threads 21 of the supporting members 20 to disengage from the inner peripheral wall 4 of the bushing 1. Then, remove the bushing 1 from the supporting members 20. The above-described embodiments are merely further explanations of this application and are not intended to limit the application in any other way. This application may have many other embodiments. Without departing from the spirit and essence of this application, those skilled in the art can make various corresponding modifications and changes based on this application, but these corresponding modifications and changes should all fall within the protection scope of this application.

Claims

1. A bushing removal tool for removing a bushing installed in an inner mounting seat, wherein one end of the bushing is closed, and the inner mounting seat is coaxially provided with an outer mounting seat located on one side of the open end of the bushing, the outer mounting seat being hollow, characterized in that... The bushing removal fixture includes a load-bearing component, a support component, a drive component, a connector, a tie rod, an abutment component, and a locking component. The bearing assembly includes two bearing members, which are arranged opposite to each other in a direction perpendicular to the axial direction of the bushing. There are at least two supporting members, which are respectively disposed on the two bearing members. The supporting members are used to extend into the inner hole of the bushing and abut against the inner peripheral wall of the bushing. The outer periphery of the supporting members is provided with threads for engaging with the inner peripheral wall of the bushing. The drive assembly includes an adjusting rod disposed between the two bearing members. One end of the adjusting rod is threadedly connected to one of the bearing members, and the other end of the adjusting rod abuts against the other bearing member. When the adjusting rod is rotated, it moves along a direction perpendicular to the bushing axis through the threaded connection, thereby driving the two bearing members to move towards or away from each other, thereby driving the supporting member to expand or contract radially along the bushing. One end of the connector is provided with a through hole, and the connector is connected to the bearing assembly through the through hole by a fastener. A gap is left between the connector and the bearing assembly that can move along the bushing axis. The other end of the connector is provided with an internal thread. The axial direction of the pull rod is consistent with the axial direction of the bushing. One end of the pull rod is connected to the connector through the internal thread. The other end of the pull rod is a free end and extends outward from the bushing along the axial direction of the bushing. The free end is provided with a thread. The abutment is disposed on the pull rod and is used to abut against the end face of the outer mounting base opposite to the bushing, and is coaxially aligned with the outer mounting base; The locking element is a nut, which is located at the free end of the pull rod and threadedly connected to the free end. It is used to press against the abutment, so that the abutment abuts against the end face of the outer mounting seat away from the bushing, and the pull rod drives the support to pull the bushing outward, thereby pulling the bushing out of the inner mounting seat along the axial direction of the bushing.

2. The bushing disassembly fixture according to claim 1, characterized in that, The supporting member is an arc shape with a central angle of 90°.

3. The bushing disassembly fixture according to claim 2, characterized in that, The adjusting rod has a radial protrusion that abuts against another of the bearing members.

4. The bushing disassembly fixture according to claim 1, characterized in that, The abutment is a positioning frame, which has a positioning hole and multiple positioning rods. The positioning rods are used to insert into the inner hole of the outer mounting base so that the abutment is coaxial with the outer mounting base.

5. The bushing disassembly fixture according to claim 2, characterized in that, The thread on the outer periphery of the support member is a metric thread with a specification of M60×2 and a thread angle of 60°.

6. The bushing disassembly fixture according to claim 1, characterized in that, The two support members are arranged opposite each other in the vertical direction.

7. The bushing disassembly fixture according to claim 1, characterized in that, The bushing is a nylon bushing.

8. The bushing disassembly fixture according to claim 1, characterized in that, The adjusting rod is provided with a through hole, and the bushing disassembly tool also includes a wrench screw, which passes through the through hole and is used to drive the adjusting rod to rotate.

9. The bushing disassembly fixture according to claim 1, characterized in that, One of the carrier components is provided with a threaded hole, and one end of the adjusting rod is provided with a thread, which is screwed into the threaded hole.

10. The bushing disassembly fixture according to claim 1, characterized in that, The pull rod is provided with an operating hole, which is used to pass an operating rod to drive the pull rod to rotate.

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