Axle box spring lower clamp bushing removal device

Abstract

This utility model relates to the field of auxiliary tooling, and provides a device for disassembling the lower clamping plate bushing of a shaft box spring. The device includes a support leg, the first end of which abuts against the lower clamping plate; a rotating shaft rotatably connected to the support leg; a connecting seat, into which the rotating shaft is rotatably inserted, and the connecting seat is adapted to move axially along the rotating shaft under its drive; a sleeve disposed at the end of the connecting seat facing the bushing, the sleeve being adapted to move axially along the central hole of the bushing under the drive of the connecting seat; a connecting member disposed at the end of the sleeve facing the bushing, the connecting member being used to engage with a bolt at the bottom of the central hole of the bushing; and a tightening member disposed on the side wall of the sleeve along its radial direction, wherein when the connecting member moves relative to the central hole of the bushing, the connecting member is adapted to tighten the tightening member so that the tightening member is pressed against the inner wall of the central hole of the bushing. This device for disassembling the lower clamping plate bushing of a shaft box spring is convenient to use and will not damage the bushing.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling and provides a device for disassembling the lower clamping plate bushing of the axle box spring. Background Technology

[0002] As an indispensable vibration damping component in the operation of rail transit vehicles, the quality of axle box springs directly affects the safety and stability of the entire vehicle. After the pressing operation of the lower axle box spring bushing is completed, there has long been a lack of an effective and non-destructive method to remove the bushing. Currently widely used methods include grinding and hammering. Although these methods can remove the bushing, they have many limitations and problems. First, these methods are inefficient, time-consuming, and labor-intensive; second, they pose significant safety hazards, easily causing injury to equipment and personnel; finally, these methods can cause irreversible physical damage to the bushing, making it unusable, resulting in material waste and increased costs.

[0003] The current market and industry urgently need a new, efficient, safe, and non-destructive method to address this issue, in order to improve the efficiency of axle box spring assembly and disassembly, reduce unnecessary losses, and ensure the overall operational safety of rail transit vehicles. Therefore, proposing a novel non-destructive removal method for the lower axle box spring bushing has significant practical and commercial value. Utility Model Content

[0004] This utility model provides a bushing removal device to solve the problem of low removal efficiency of bushings in related technologies.

[0005] This utility model embodiment provides a device for disassembling the lower clamping plate bushing of axle box springs, including:

[0006] The outrigger has its first end abutting against the lower clamping plate;

[0007] A pivot is rotatably connected to the support leg;

[0008] A connecting seat, wherein the rotating shaft is rotatably inserted into the connecting seat and the connecting seat is adapted to move along the axial direction of the rotating shaft under the drive of the rotating shaft;

[0009] A sleeve is disposed at one end of the connecting seat facing the bushing. The sleeve is adapted to move axially along the central hole of the bushing under the drive of the connecting seat. A connecting member is disposed at the end of the sleeve facing the bushing. The connecting member is used to engage with a bolt at the bottom of the central hole of the bushing. A clamping member is disposed on the side wall of the sleeve along the radial direction of the sleeve. When the connecting member moves relative to the central hole of the bushing, the connecting member is adapted to clamp the clamping member so that the clamping member is clamped against the inner wall of the central hole of the bushing.

[0010] According to one embodiment of the present invention, a positioning member is provided on the side wall of the sleeve along the radial direction of the sleeve, and the positioning member is used to position itself with the center hole of the bushing.

[0011] According to one embodiment of the present invention, a locking seat is provided on the side wall of the sleeve along the radial direction of the sleeve, and the positioning member is movably installed on the locking seat.

[0012] According to one embodiment of the present invention, there are multiple positioning elements, and the multiple positioning elements are arranged at intervals along the circumference of the sleeve.

[0013] According to one embodiment of the present invention, the connector is provided with an abutment section at one end facing the connector seat. The cross-sectional area of ​​the abutment section gradually decreases from the bushing toward the connector seat, and the abutment section is used to abut against the tightening member.

[0014] According to one embodiment of the present invention, there are multiple clamping members, and the multiple clamping members are arranged at intervals along the circumference of the sleeve.

[0015] According to one embodiment of the present invention, the end of the clamping member facing away from the sleeve is provided with a corrugated surface.

[0016] According to one embodiment of the present invention, a receiving cavity is formed in the connecting seat, and a movable seat and a bearing seat are disposed in the receiving cavity. The rotating shaft is connected to the movable seat, and the bearing seat is disposed on the side of the movable seat away from the bushing.

[0017] According to one embodiment of the present invention, there are two legs, and a connecting rod connects the two legs. The rotating shaft is rotatably connected to the connecting rod.

[0018] According to one embodiment of the present invention, a handle is also provided at the end of the rotating shaft opposite to the connecting rod.

[0019] According to the embodiment of this utility model, the axle box spring lower clamping plate bushing disassembly device, from the perspective of ease of operation, transforms the complex disassembly operation into a simple rotating shaft action through the mechanical transmission design between the rotating shaft, connecting seat, and sleeve. Operators do not need to use multiple tools for complex operations; they can disassemble the bushing simply by rotating the shaft, greatly reducing operational difficulty and improving disassembly efficiency. Regarding disassembly precision, the precise engagement of the connecting piece on the sleeve with the bolt at the bottom of the bushing's central hole, and the uniform tightening of the clamping piece against the inner wall of the bushing's central hole, ensure uniform force on the bushing during disassembly, avoiding damage to the bushing or lower clamping plate caused by uneven force, guaranteeing high disassembly precision, and improving the reusability of parts. In terms of applicability, the device's structural design is suitable for various specifications of axle box spring lower clamping plate bushings. By adjusting the specifications of the connecting piece and the clamping piece, it can meet the disassembly requirements of bushings of different sizes, exhibiting strong versatility and reducing the cost for enterprises that would otherwise need to equip multiple disassembly tools due to different bushing specifications. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic perspective view of the axle box spring lower clamping plate bushing disassembly device provided by this utility model.

[0022] Figure 2 This is a schematic perspective view of the axle box spring lower clamping plate bushing disassembly device provided by this utility model, with the lower clamping plate concealed.

[0023] Figure 3 This is a schematic perspective view of the axle box spring lower clamping plate bushing disassembly device provided by this utility model, with the lower clamping plate, connecting seat, and sleeve hidden.

[0024] Figure label:

[0025] 10. Lower clamping plate; 100. Support leg; 102. Rotating shaft; 104. Connecting seat; 106. Sleeve; 108. Connecting piece; 110. Tightening piece; 112. Positioning piece; 114. Locking seat; 116. Movable seat; 118. Bearing seat; 120. Connecting rod; 122. Handle. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0027] like Figures 1 to 3 As shown, this utility model embodiment provides a bushing disassembly device for the lower clamping plate 10 of the axle box spring, comprising:

[0028] Outrigger 100, the first end of outrigger 100 abuts against the lower clamping plate 10;

[0029] The pivot 102 is rotatably connected to the support leg 100;

[0030] The connecting seat 104 and the rotating shaft 102 are rotatably inserted into the connecting seat 104, and the connecting seat 104 is adapted to move along the axial direction of the rotating shaft 102 under the drive of the rotating shaft 102.

[0031] A sleeve 106 is disposed at the end of the connecting seat 104 facing the bushing. The sleeve 106 is adapted to move axially along the central hole of the bushing under the drive of the connecting seat 104. A connecting member 108 is disposed at the end of the sleeve 106 facing the bushing. The connecting member 108 is used to engage with the bolt at the bottom of the central hole of the bushing. A clamping member 110 is disposed on the side wall of the sleeve 106 along the radial direction. When the connecting member 108 moves relative to the central hole of the bushing, the connecting member 108 is adapted to clamp the clamping member 110 so that the clamping member 110 is clamped against the inner wall of the central hole of the bushing.

[0032] According to the bushing disassembly device for the lower clamping plate 10 of the axle box spring provided in this embodiment, from the perspective of ease of operation, the complex disassembly operation is transformed into a simple rotation of the shaft 102 through the mechanical transmission design between the rotating shaft 102, the connecting seat 104, and the sleeve 106. Operators do not need to use multiple tools for complex operations; they can disassemble the bushing simply by rotating the shaft 102, greatly reducing the difficulty of operation and improving disassembly efficiency. Regarding disassembly precision, the precise engagement of the connecting piece 108 on the sleeve 106 with the bolt at the bottom of the bushing's central hole, and the uniform tightening of the clamping piece 110 against the inner wall of the bushing's central hole, ensure uniform force on the bushing during disassembly, avoiding damage to the bushing or the lower clamping plate 10 due to uneven force, ensuring high disassembly precision, and facilitating the improvement of component reuse rate. In terms of applicability, the structural design of this device is suitable for bushings of various specifications of axle box spring lower clamp plate 10. By adjusting the specifications of the connecting part 108 and the clamping part 110, it can meet the disassembly requirements of bushings of different sizes, and has strong versatility, reducing the cost for enterprises to equip themselves with a variety of disassembly tools due to different bushing specifications.

[0033] Please continue reading Figures 1 to 3The bushing disassembly device for the lower clamping plate 10 of the axle box spring in this embodiment consists of four main parts: a support leg 100, a rotating shaft 102, a connecting seat 104, and a sleeve 106. The components work together to achieve efficient disassembly.

[0034] The outrigger 100 serves as the supporting foundation for the entire device. Its first end directly abuts against the lower clamping plate 10, providing a stable support point for disassembly operations. This ensures the overall stability of the device during disassembly and prevents shaking from affecting disassembly accuracy and safety.

[0035] The rotating shaft 102 is rotatably connected to the support leg 100, forming the power transmission hub of the device. By rotating the shaft 102, operating force can be transmitted to subsequent components, and its rotatable connection ensures the flexibility and smoothness of power transmission.

[0036] The connecting seat 104 and the rotating shaft 102 are connected by a rotatable insertion method. This connection design allows the connecting seat 104 to move along the axial direction of the rotating shaft 102 under the drive of the rotating shaft 102. The rotation of the rotating shaft 102 is converted into the axial displacement of the connecting seat 104 through a mechanical transmission relationship, thereby driving the sleeve 106.

[0037] A sleeve 106 is located at the end of the connecting seat 104 facing the bushing. Driven by the connecting seat 104, the sleeve 106 can move axially along the central hole of the bushing. The connecting member 108 located at the end of the sleeve 106 facing the bushing is a key component for disassembly. Its special design allows it to precisely engage with the bolt at the bottom of the central hole of the bushing. When the device is operated, causing the connecting member 108 to move relative to the central hole of the bushing, the connecting member 108 will press against the clamping member 110 located on the side wall of the sleeve 106. The clamping member 110 is arranged radially along the sleeve 106. Under the action of the connecting member 108, the clamping member 110 can press outward against the inner wall of the central hole of the bushing, thereby firmly clamping the bushing and providing a leverage point for subsequent disassembly.

[0038] In actual operation, the outrigger 100 is first placed against the lower clamping plate 10 to ensure stability. Then, by rotating the shaft 102, the connecting seat 104 moves axially along the shaft 102, thereby moving the sleeve 106 towards the bushing. When the sleeve 106 reaches the appropriate position, the connecting piece 108 engages with the bolt at the bottom of the bushing's central hole. Continuing to rotate the shaft 102 causes the connecting piece 108 to press against the clamping piece 110, thus pressing the clamping piece 110 against the inner wall of the bushing's central hole. Finally, by continuously rotating the shaft 102 or applying other disassembly force, the bushing can be removed from the lower clamping plate 10.

[0039] According to one embodiment of the present invention, a positioning member 112 is provided on the side wall of the sleeve 106 along the radial direction of the sleeve 106. The positioning member 112 is used to position itself with the center hole of the bushing.

[0040] In one embodiment of this utility model, a positioning member 112 is provided on the side wall of the sleeve 106 along its radial direction. The positioning member 112 has a columnar structure, and its axis is consistent with the radial direction of the sleeve 106. One end of the positioning member 112 is fixed to the side wall of the sleeve 106, and the other end is a free end. The shape of the free end is adapted to the inner wall contour of the bushing center hole (such as hemispherical or frustum-shaped). When the sleeve 106 is inserted into the bushing center hole, the free end of the positioning member 112 contacts the hole wall, and the radial displacement of the sleeve 106 is restricted by a multi-point positioning method, ensuring that the axis of the sleeve 106 is coaxial with the axis of the bushing center hole.

[0041] The positioning engagement between the positioning element 112 and the center hole of the bushing ensures that the sleeve 106 remains coaxial with the bushing during disassembly, preventing uneven stress on the bushing due to eccentricity, and preventing deformation or damage to the bushing or lower clamping plate 10, thus improving disassembly accuracy. The automatic centering function of the positioning element 112 reduces the need for manual adjustment of the sleeve 106 position. Operators only need to insert the sleeve 106 into the hole, and the positioning element 112 will automatically position it through mechanical engagement, reducing operational difficulty and improving disassembly efficiency.

[0042] According to one embodiment of the present invention, a locking seat 114 is provided on the side wall of the sleeve 106 along the radial direction of the sleeve 106, and the positioning member 112 is movably installed on the locking seat 114.

[0043] In one embodiment of this utility model, a radial through hole is formed in the side wall of the sleeve 106 as a locking seat 114, and the positioning member 112 is installed in the locking seat 114 by a threaded connection or sliding fit. A limiting boss is provided at one end of the positioning member 112 near the center of the sleeve 106 to prevent it from falling out of the locking seat 114; the other end extends out of the side wall of the sleeve 106, and its extension length can be adjusted by rotating or sliding the positioning member 112. When the extension length of the positioning member 112 is adjusted to contact the inner wall of the bushing center hole, the position of the positioning member 112 is fixed by a locking structure (such as a nut).

[0044] The movable positioning element 112, by adjusting its extension length, can adapt to bushing center holes of different inner diameters. Simply replacing or adjusting the positioning element 112 can meet the positioning needs of various bushing specifications, enhancing the versatility of the device and reducing tooling costs for enterprises. By precisely adjusting the extension amount of the positioning element 112, it can be adapted to bushing hole walls with different degrees of wear, ensuring positioning accuracy. Even with slight wear on the bushing hole wall, reliable positioning can be achieved by adjusting the positioning element 112, improving the environmental adaptability of the device.

[0045] According to one embodiment of the present invention, there are multiple positioning elements 112, which are spaced apart along the circumference of the sleeve 106.

[0046] In one embodiment of this utility model, 3-4 positioning elements 112 are evenly distributed circumferentially along the sidewall of the sleeve 106, with an included angle of 90°-120° between adjacent positioning elements 112. Each positioning element 112 has the same structure and installation method, and is movably arranged radially along the sleeve 106. When the sleeve 106 is inserted into the center hole of the bushing, multiple positioning elements 112 simultaneously contact the hole wall, forming a multi-point support and positioning structure, which together restricts the radial movement and circumferential rotation of the sleeve 106.

[0047] Multiple positioning elements 112 are spaced apart circumferentially to form symmetrical positioning supports. Compared to a single positioning element 112, this effectively resists the eccentric torque generated during disassembly, preventing the sleeve 106 from tilting or rotating, ensuring uniform force on the bushing during disassembly, and improving the stability and reliability of the device. The multiple positioning elements 112 act simultaneously on the bushing bore wall, evenly distributing the positioning force to different positions on the bore wall, reducing indentations or damage caused by excessive localized force on the bore wall, protecting the surface quality of the bushing, and facilitating its reuse.

[0048] According to one embodiment of the present invention, the end of the connector 108 facing the connector 104 is provided with an abutment section. The cross-sectional area of ​​the abutment section gradually decreases from the bushing toward the connector 104. The abutment section is used to press against the clamping member 110.

[0049] In one embodiment of this utility model, the end of the connector 108 near the connecting seat 104 is designed as a tapered abutment section, with the cross-sectional diameter of the abutment section gradually decreasing from the bushing towards the connecting seat 104 (such as a frustum-shaped structure). The clamping member 110 is installed in the radial through hole in the side wall of the sleeve 106, and its end near the connector 108 is a slope, which fits against the tapered surface of the abutment section. When the connector 108 moves axially, the tapered surface of the abutment section pushes the clamping member 110 to move radially outward along the sleeve 106, so that the other end of the clamping member 110 presses against the bushing hole wall.

[0050] The tapered structure of the abutment section utilizes the principle of inclined planes to convert the axial force of the connector 108 into the radial force of the clamping member 110, creating a mechanical force amplification effect. Only a small axial operating force is needed to generate a large radial clamping force in the clamping member 110, ensuring that the clamping member 110 is in close contact with the bushing hole wall and providing sufficient clamping force. The tapered design of the abutment section allows multiple clamping members 110 (if any) to clamp outwards synchronously, avoiding uneven force on the bushing caused by asynchronous clamping, ensuring the consistency and reliability of the clamping process, and improving the stability of the disassembly operation.

[0051] According to one embodiment of the present invention, there are multiple clamping members 110, and the multiple clamping members 110 are arranged at intervals along the circumference of the sleeve 106.

[0052] In one embodiment of this utility model, 3-4 clamping members 110 are evenly distributed circumferentially along the sidewall of the sleeve 106, each clamping member 110 corresponding to a conical surface area of ​​the abutment section. The clamping members 110 are installed in the radial hole of the sleeve 106 by means of a spring or sliding fit, with their inner inclined surfaces fitting against the conical surface of the abutment section, and their outer end faces being flat or arc-shaped, used to clamp the bushing hole wall. When the connecting member 108 moves axially, the conical surface of the abutment section simultaneously pushes multiple clamping members 110 to move radially outward, uniformly clamping the bushing hole wall.

[0053] Multiple clamping elements 110 are spaced apart circumferentially, allowing simultaneous application of clamping force at multiple locations on the bushing hole wall. This creates a uniform circumferential clamping force, preventing bushing deformation due to excessive localized stress, ensuring bushing integrity during disassembly, and improving component reusability. The combined action of multiple clamping elements 110 provides greater clamping force; even if one clamping element 110 wears or malfunctions, the others can still maintain a certain clamping effect, enhancing the redundancy and reliability of the device and reducing safety hazards caused by clamping failure during disassembly.

[0054] According to one embodiment of the present invention, the end of the clamping member 110 facing away from the sleeve 106 is provided with a corrugated surface.

[0055] In one embodiment of this utility model, the end of the clamping member 110 facing away from the sleeve 106 (i.e., the end face in contact with the bushing hole wall) is machined with a corrugated uneven structure. The direction of the corrugations is consistent with the radial direction of the sleeve 106, and the height difference between the crests and troughs is 0.5-1mm. The corrugated surface is made of a wear-resistant material (such as cemented carbide) with low surface roughness, ensuring that it can provide sufficient friction when in contact with the bushing hole wall without scratching the hole wall.

[0056] The corrugated surface's uneven structure increases the contact area and surface roughness between the clamping member 110 and the bushing bore wall, thereby increasing friction and preventing the clamping member 110 from sliding against the bore wall during disassembly. This ensures reliable clamping and avoids reduced disassembly efficiency or bushing damage due to slippage. The corrugated surface's uneven structure features a smooth transition design, which, while increasing friction, does not cause scratches or indentations on the bushing bore wall. It protects the bushing surface quality while ensuring clamping force, meeting the design requirements for non-destructive disassembly and facilitating the reuse of the bushing.

[0057] According to one embodiment of the present invention, a receiving cavity is formed in the connecting seat 104, and a movable seat 116 and a bearing seat 118 are disposed in the receiving cavity. The rotating shaft 102 is connected to the movable seat 116, and the bearing seat 118 is disposed on the side of the movable seat 116 away from the bushing.

[0058] In one embodiment of this utility model, the connecting seat 104 has a cylindrical receiving cavity machined inside, and a movable seat 116 and a bearing seat 118 are sequentially installed inside the receiving cavity. The movable seat 116 has a hollow structure, and its inner wall is connected to the rotating shaft 102 via a spline or keyway, allowing the rotating shaft 102 to rotate and drive the movable seat 116 to move axially. A thrust bearing or a sliding bearing is installed inside the bearing seat 118, and the bearing seat 118 is fixed to the bottom of the receiving cavity. The movable seat 116 and the connecting seat 104 form an axially sliding and relatively rotatable connection through the bearing seat 118. When the rotating shaft 102 rotates, the movable seat 116 moves axially under the support of the bearing seat 118, thereby driving the sleeve 106 to move.

[0059] The bearing housing 118 converts the sliding friction between the movable seat 116 and the connecting seat 104 into rolling friction (or low-resistance sliding friction), significantly reducing the resistance when the shaft 102 rotates. This allows operators to rotate the shaft 102 with only a small force, reducing labor intensity and improving the convenience of disassembly. The keyed connection between the movable seat 116 and the shaft 102 ensures that the rotation of the shaft 102 is accurately converted into the axial displacement of the movable seat 116, while the positioning function of the bearing housing 118 ensures the linear axial movement of the movable seat 116, preventing offset or wobbling during transmission, ensuring the axial movement accuracy of the sleeve 106, and improving the stability and reliability of the disassembly operation.

[0060] According to one embodiment of the present invention, there are two support legs 100, and a connecting rod 120 is connected between the two support legs 100. A rotating shaft 102 is rotatably connected to the connecting rod 120.

[0061] In one embodiment of this utility model, the device employs two symmetrically arranged support legs 100. The first end of each support leg 100 is designed as a contact surface (such as a flat or curved surface) adapted to the surface of the lower clamping plate 10, and the second end is fixedly connected via a connecting rod 120. The connecting rod 120 is a beam structure, with both ends welded or bolted to the two support legs 100 respectively. A shaft hole is opened in the middle of the connecting rod 120, and a rotating shaft 102 is rotatably installed in the shaft hole via a bearing. The two support legs 100 and the connecting rod 120 form a stable triangular support structure, ensuring the stability of the device when it abuts against the lower clamping plate 10.

[0062] The two outriggers 100 are connected by a connecting rod 120 to form a rigid frame. Compared to a single outrigger 100, this effectively resists the lateral forces and moments generated during disassembly, preventing the device from tilting or swaying. It provides a stable support base for disassembly operations, ensuring a safe and reliable disassembly process. The symmetrical arrangement of the two outriggers 100 allows for quick and accurate positioning on the lower clamping plate 10. Operators only need to place the two outriggers 100 against the two sides of the lower clamping plate 10 to complete the positioning and installation of the device, reducing positioning time and improving disassembly efficiency. The symmetrical structure also facilitates the even distribution of forces.

[0063] According to one embodiment of the present invention, a handle 122 is also provided at the end of the rotating shaft 102 that is away from the connecting rod 120.

[0064] In one embodiment of this utility model, a handle 122 is fixedly connected to the end of the rotating shaft 102 away from the connecting rod 120 (i.e., the operating end). The handle 122 has a circular or L-shaped structure, is covered with an anti-slip material (such as rubber or engineering plastic), and has anti-slip textures on its surface. The axis of the handle 122 is perpendicular to or coaxial with the axis of the rotating shaft 102, making it easy for the operator to grip and apply force. The handle 122 is connected to the rotating shaft 102 by key connection or welding, ensuring that the rotating shaft 102 can be reliably driven to rotate when the handle 122 is turned.

[0065] The handle 122 provides a comfortable point of force application for the operator. Compared to directly rotating the shaft 102, gripping the handle 122 is more ergonomic and significantly reduces operational intensity. The anti-slip design of the handle 122 also prevents hand slippage during operation, improving safety and convenience. The length of the handle 122 (the distance from the axis of the shaft 102 to the point of force application) is greater than the diameter of the shaft 102, creating a lever-like force amplification effect. The operator can generate a large rotational torque with a small force applied through the handle 122, easily overcoming the friction between the bushing and the lower clamping plate 10 during disassembly, making the disassembly operation easier and more efficient.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for disassembling the lower clamping plate bushing of axle box spring, characterized in that, include: A support leg (100), the first end of which abuts against the lower clamping plate; A pivot (102) is rotatably connected to the support leg (100). Connecting seat (104), the rotating shaft (102) is rotatably inserted into the connecting seat (104) and the connecting seat (104) is adapted to move along the axial direction of the rotating shaft (102) under the drive of the rotating shaft (102); A sleeve (106) is disposed at one end of the connecting seat (104) facing the bushing. The sleeve (106) is adapted to move axially along the central hole of the bushing under the drive of the connecting seat (104). A connector (108) is disposed at one end of the sleeve (106) facing the bushing. The connector (108) is used to engage with a bolt at the bottom of the central hole of the bushing. A clamping member (110) is disposed on the side wall of the sleeve (106) along the radial direction. When the connector (108) moves relative to the central hole of the bushing, the connector (108) is adapted to clamp the clamping member (110) so that the clamping member (110) is clamped against the inner wall of the central hole of the bushing.

2. The axle box spring lower clamping plate bushing disassembly device according to claim 1, characterized in that, A positioning element (112) is provided on the side wall of the sleeve (106) along the radial direction of the sleeve (106), the positioning element (112) being used to position itself with the center hole of the bushing.

3. The axle box spring lower clamping plate bushing disassembly device according to claim 2, characterized in that, Along the radial direction of the sleeve (106), a locking seat (114) is provided on the side wall of the sleeve (106), and the positioning member (112) is movably installed on the locking seat (114).

4. The axle box spring lower clamping plate bushing disassembly device according to claim 2, characterized in that, There are multiple positioning elements (112), and the multiple positioning elements (112) are arranged at intervals along the circumference of the sleeve (106).

5. The axle box spring lower clamping plate bushing disassembly device according to claim 1, characterized in that, The connector (108) has an abutment section at one end facing the connector (104). The cross-sectional area of ​​the abutment section gradually decreases from the bushing toward the connector (104). The abutment section is used to press against the top member (110).

6. The axle box spring lower clamping plate bushing disassembly device according to claim 5, characterized in that, There are multiple clamping members (110), and the multiple clamping members (110) are arranged at intervals along the circumference of the sleeve (106).

7. The axle box spring lower clamping plate bushing disassembly device according to claim 5, characterized in that, The end of the clamping member (110) facing away from the sleeve (106) is provided with a corrugated surface.

8. The axle box spring lower clamping plate bushing disassembly device according to any one of claims 1 to 7, characterized in that, The connecting seat (104) has a receiving cavity, in which a movable seat (116) and a bearing seat (118) are provided. The rotating shaft (102) is connected to the movable seat (116), and the bearing seat (118) is located on the side of the movable seat (116) away from the bushing.

9. The axle box spring lower clamping plate bushing disassembly device according to any one of claims 1 to 7, characterized in that, There are two support legs (100), and a connecting rod (120) is connected between the two support legs (100). The rotating shaft (102) is rotatably connected to the connecting rod (120).

10. The axle box spring lower clamping plate bushing disassembly device according to claim 9, characterized in that, The end of the rotating shaft (102) opposite to the connecting rod (120) is also provided with a handle (122).

Images