Supporting plate bushing dismounting tool

Abstract

This utility model discloses a support plate bushing disassembly and assembly fixture, relating to the field of rail vehicle disassembly fixture technology. It includes a fixed plate with a locking groove that engages with a vertically positioned support plate; a pressure block with a positioning part passing through the bushing's inner cavity to lock the relative position of the pressure block and the bushing; a supporting part fixedly connected to the end of the positioning part, abutting against the end of the bushing to push the bushing out of the support plate; a limiting part fixedly connected to the end of the supporting part away from the positioning part, abutting against the side wall of the support plate to limit the pushing distance of the pressure block; and a drive rod connected to the end of the limiting part away from the supporting part, which pushes the pressure block. This support plate bushing disassembly and assembly fixture solves the technical problem that during bushing disassembly using a shaft puller, the pressure applied to the inner wall of the bushing is uneven, and the bushing is easily damaged due to uneven force during pulling, increasing replacement costs.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle disassembly tooling technology, and in particular to a support plate bushing disassembly and assembly tooling. Background Technology

[0002] During the maintenance of high-voltage disconnect switches on high-speed trains, checking the uniformity of the bushing is a necessary step. When the bushing is deformed, it needs to be separated from the support plate and reinstalled into the pre-drilled hole in the support plate. The common disassembly method is to insert the shaft puller into the bushing, connect the shaft puller to the bushing, and then pull the shaft puller to remove the shaft puller and bushing from the support plate at the same time. However, during the pulling process, the pulling force of the shaft puller on the bushing is unevenly distributed, which can cause the bushing to be strained or cracked. Damaged bushings are difficult to repair, increasing maintenance costs.

[0003] In conclusion, developing a disassembly and assembly tool that is easy to operate and does not easily damage the bushing is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling for disassembling and assembling a support plate bushing, which solves the technical problem that existing disassembly tools cause uneven stress on the bushing when pulling it inside the support plate, resulting in easy tearing and damage to the bushing.

[0005] To achieve the above objectives, this utility model provides a tooling for disassembling and assembling a support plate bushing, comprising:

[0006] A fixing plate is provided with a locking groove, which can engage with a vertically installed support plate.

[0007] The pressure block includes a positioning part that passes through the inner cavity of the bushing to lock the relative position of the pressure block and the bushing. A supporting part is fixedly connected to the end of the positioning part, and the supporting part abuts against the port of the bushing to push the bushing out of the support plate. A limiting part is fixedly connected to the end of the supporting part away from the positioning part, and the limiting part abuts against the side wall of the support plate to limit the pushing distance of the pressure block.

[0008] The drive rod is connected to the end of the limiting part that is away from the supporting part, and the drive rod is used to push the pressure block.

[0009] Preferably, the drive rod is threaded onto the support platform, the feed direction of the drive rod extends along the length direction of the support platform, and a drive component is connected to the end of the drive rod away from the pressure block, the drive component being used to rotate the drive rod.

[0010] Preferably, the fixing plate is located at one end of the support platform away from the driving component.

[0011] Preferably, the positioning part has a chamfer on the side near the fixing plate, and a guide ring is provided at the connection between the positioning part and the supporting part.

[0012] Preferably, the pressure block has a positioning groove inside, which is coaxially arranged with the pressure block. The bottom surface of the locking groove is provided with a positioning rod. When the support plate is connected with the locking groove, the positioning rod extends into the bushing and can extend into the positioning groove.

[0013] Preferably, the depth of the locking groove is greater than the length of the bushing and less than the length of the positioning rod.

[0014] Preferably, a connecting bearing is sleeved between the pressure block and the drive rod.

[0015] Preferably, a rocker arm is detachably connected to the end of the drive rod near the drive component.

[0016] Compared to the aforementioned background technology, the support plate bushing disassembly and assembly tooling provided by this utility model includes: a pressure block, the pressure block having a positioning part that abuts against the bushing, the side wall of the positioning part fitting against the inner wall of the bushing, restricting the radial degree of freedom of the pressure block, so that the abutment part connected to the positioning part can accurately correspond to the end face of the bushing inside the support plate, a limiting part connected to the abutment part away from the positioning part, the positioning part, the abutment part, and the limiting part are all coaxially arranged, and their diameters increase sequentially, the limiting part can abut against the side wall of the support plate, restricting the distance the pressure block extends into the support plate, a driving rod is provided on the side of the limiting part away from the positioning part, when disassembling the bushing inside the support plate, the positioning part is extended into the bushing The inner cavity of the sleeve, the positioning part allows the pressure block to move only along the axis of the bushing. At this time, push the drive rod so that the holding part only abuts against the end face of the bushing in the support plate, set the support plate to a non-vertical state, push the support plate to fit against the side wall of the fixed plate, and align the bushing with the locking groove. At this time, continue to move the drive rod, the position of the support plate is locked, and the bushing corresponding to the locking groove still has additional movement space. The abutting part pushes the bushing out of the support plate. In addition, during the replacement and installation of the bushing, set the support plate vertically, engage the support plate with the locking groove, put the bushing on the positioning part, move the drive rod, and the locking groove pushes the bushing into the reserved hole of the support plate.

[0017] This invention simplifies and speeds up the assembly and disassembly of the bushing, and improves the installation accuracy of the bushing by restricting the setting state of the bushing and the support plate through the positioning part and locking groove. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of 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 only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the support plate bushing disassembly and assembly tooling provided in the embodiment of this utility model;

[0020] Figure 2 A cross-sectional view of the pressure block provided in an embodiment of this utility model;

[0021] Figure 3 A side view of the bushing installation process provided in an embodiment of this utility model;

[0022] Figure 4 A cross-sectional view of the bushing installation process provided in an embodiment of this utility model;

[0023] Figure 5 A side view of the bushing disassembly process provided in an embodiment of this utility model;

[0024] Figure 6 This is a cross-sectional view of the bushing disassembly process provided in an embodiment of the present utility model.

[0025] Among them, 1-fixed plate; 11-locking groove; 2-support plate; 3-pressing block; 31-positioning part; 32-supporting part; 33-limiting part; 34-positioning groove; 4-drive rod; 5-bearing platform; 51-connecting plate; 6-bushing; 7-positioning rod; 8-drive component. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] This utility model provides a tooling for disassembling and assembling a support plate bushing. Please refer to the appendix to the instruction manual. Figure 1 With appendix Figure 2The support plate bushing assembly / disassembly fixture includes a fixing plate 1 with a locking groove 11. When the support plate 2 is in a vertical state, the support plate 2 can be engaged into the locking groove 11. When the support plate 2 is not in a vertical state, the support plate 2 is in contact with the side wall of the fixing plate 1, and the locking groove 11 is in an unoccupied state. Furthermore, a drive rod 4 is provided along the depth direction of the locking groove 11. A pressure block 3 is provided at one end of the drive rod 4 near the locking groove 11. The pressure block 3 includes a limiting part 33 fixedly connected to the push rod. A supporting part 32 is connected to the side of the limiting part 33 away from the drive rod 4. A positioning part 31 is connected to the side opposite to the limiting part 33. Preferably, the dimensions of the limiting part 33, the supporting part 32, and the positioning part 31 decrease in sequence. The diameter of the limiting part 33 is larger than the diameter of the bushing 6, and the limiting part 33 can abut against the side wall of the support plate 2. The diameter of the supporting part 32 is equal to or slightly smaller than the outer diameter of the bushing 6, and the supporting part 32 abuts against the end face of the bushing 6. The diameter of the positioning part 31 is equal to the inner diameter of the bushing 6. After the positioning part 31 is inserted into the bushing 6, the positioning part 31 restricts the radial degree of freedom of the pressure block 3, so that the pressure block 3 can only move along the axial direction of the bushing 6.

[0029] Please refer to the instruction manual appendix. Figure 3 Referring to Figure 4, during the process of disassembling the bushing 6 inside the support plate 2 using this utility model, the support plate 2 is set to a non-vertical state, so that the support plate 2 is in contact with the side wall of the fixing plate 1. It should be noted that when the support plate 2 is in a horizontal state, the axis of the bushing 6 and the axis of the pressure block 3 are on the same horizontal plane. Adjust the horizontal position of the support plate 2 to align the positions of the bushing 6 and the pressure block 3. The drive rod 4 pushes the pressure block 3, so that the positioning part 31 extends into the inner cavity of the bushing 6, preventing the pressure block 3 from shifting during the pushing process. Uneven force on bushing 6 damages its structure. Subsequently, drive rod 4 continues to push pressure block 3. Since locking groove 11 is currently empty, support plate 2 is in contact with fixing plate 1, and bushing 6 still has room to move. Holding part 32 presses against the end of bushing 6, pushing bushing 6 into locking groove 11, completing the disassembly of bushing 6. After bushing 6 is completely pushed out of support plate 2, limiting part 33 abuts against the side wall of support plate 2, preventing holding part 32 from passing through support plate 2 and affecting the reset process of drive rod 4. Please refer to the attached instruction manual. Figure 5 To be continued Figure 6 During the process of installing the bushing 6 into the support plate 2 using this application, the support plate 2 is set vertically so that it engages with the locking groove 11, and the reserved hole on the support plate 2 is coaxially aligned with the drive rod 4. The bushing 6 to be installed is inserted into the positioning part 31 of the pressure block 3. The drive rod 4 is moved, and the bushing 6 is held by the abutment part 32 and gradually extends into the support plate 2. Since the support plate 2 engages with the locking groove 11, one end of the reserved hole in the support plate 2 is closed by the bottom surface of the locking groove 11. The bushing 6 extends into the reserved hole and abuts against the bottom surface of the locking groove 11. The pressure block 3 is then pulled out from the bushing 6, completing the installation of the bushing 6.

[0030] Please refer to the instruction manual appendix. Figure 1 The drive rod 4 is connected to the support platform 5. The feed direction of the drive rod 4 is along the length direction of the support platform 5. The support platform 5 has a connecting plate 51 and a fixing plate 1 extending upwards from both ends along the length direction. The drive rod 4 is specifically a lead screw and is threadedly connected to the connecting plate 51. A drive component 8 is connected to the end of the drive rod 4 away from the fixing plate 1. The drive component 8 can be specifically a servo motor. The output shaft of the drive component 8 is coaxially connected to the drive rod 4. The drive component 8 controls the feed amount of the pressure block 3 by controlling the rotation of the drive rod 4. Preferably, the drive component 8 has a built-in pressure sensor. The pressure sensor is used to detect the thrust on the drive shaft. When the thrust on the drive rod 4 exceeds the preset range, the drive component 8 is controlled to stop running to avoid the drive rod 4 malfunctioning, locking in position and unable to rotate, which would damage the output shaft of the drive component 8. Alternatively, the pressure block 3 completes the disassembly of the bushing 6, the limiting part 33 abuts against the support plate 2, and the pressure sensor stops the operation of the drive component 8 to avoid excessive pressure between the pressure block 3 and the support plate 2, which would damage the equipment.

[0031] Preferably, the fixing plate 1 is located at the end of the support platform 5 that is away from the driving member 8. In the process of disassembling the bushing 6, the driving rod 4 needs to push the pressure block 3 so that the pressure block 3 extends into the bushing 6 and pushes the bushing 6 into the locking groove 11.

[0032] Preferably, a chamfer is provided at the edge of the positioning part 31 away from the supporting part 32, so that the diameter of the end of the positioning part 31 opposite to the bushing 6 gradually decreases towards the end away from the supporting part 32. This makes it easier for the positioning part 31 to extend into the inner cavity of the bushing 6, facilitating the positioning of the pressure block 3 and the bushing 6. In addition, a guide ring is provided at the connection between the positioning part 31 and the supporting part 32. The guide ring is used to guide the port of the bushing 6 so that the port of the bushing 6 is accurately fitted onto the end face of the supporting part 32. Furthermore, the guide part with a gradually increasing diameter can also adapt to the port of the bushing 6 that has been deformed due to damage, improving the reliability of the support plate bushing disassembly and assembly tooling.

[0033] Please refer to the instruction manual appendix. Figure 2 With appendix Figure 4A positioning groove 34 is provided inside the pressure block 3, and the positioning groove 34 extends along the axial direction of the pressure block 3. Correspondingly, a positioning rod 7 is provided on the bottom surface of the locking groove 11. Preferably, the length of the positioning rod 7 is slightly greater than the depth of the locking groove 11, that is, the positioning rod 7 extends out a part from the port of the locking groove 11. The thickness of the support plate 2 is equal to the depth of the locking groove 11. The positioning rod 7 also extends out from the reserved hole. During the installation of the bushing 6, the positioning groove 34 of the pressure block 3 can dock with the end of the extended positioning rod 7 to assist in the positioning of the pressure block 3 and the reserved hole, and prevent the bushing 6 from being set crooked, which would cause the pressure block 3 to be unable to smoothly extend into the reserved hole. Furthermore, the depth of the locking groove 11 and the length of the supporting part 32 are both greater than the length of the bushing 6. During the disassembly of the bushing 6, the length of the supporting part 32 is sufficient to push the bushing 6 out of the support plate 2, and the depth of the locking groove 11 can also fully accommodate the pushed-out bushing 6.

[0034] It should be noted that the drive rod 4 passes through the pressure block 3, and a connecting bearing is clamped between the pressure block 3 and the drive rod 4. The connecting bearing allows relative rotation between the pressure block 3 and the drive rod 4. During the rotation of the drive rod 4, the drive rod 4 can only apply axial thrust to the pressure block 3, and the torque applied by the drive rod 4 is released by the connecting bearing. If there is no connecting bearing between the drive rod 4 and the pressure block 3, the pressure block 3 will rotate with the drive rod 4 while being pushed forward. The pressure block 3 will apply a large thrust to the bushing 6 port. While the pressure block 3 is rotating, friction is generated between the bushing 6 and the pressure block 3. The friction hinders the rotation of the output shaft of the drive component 8, reduces the disassembly efficiency of the bushing 6, and increases the pressure on the drive component 8, creating a safety hazard.

[0035] Preferably, a rocker arm is detachably connected to one end of the drive rod 4 near the drive component 8. In the event of a malfunction of the drive component 8 or a power outage, the operator can manually rotate the drive rod 4 using the rocker arm to perform disassembly or installation operations.

[0036] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0037] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A tooling for disassembling and assembling a support plate bushing, characterized in that, include: A fixing plate (1) is provided with a locking groove (11), which can engage with a vertically arranged support plate (2); The pressure block (3) includes a positioning part (31) which passes through the inner cavity of the bushing (6) to lock the relative position of the pressure block (3) and the bushing (6). The end of the positioning part (31) is fixedly connected to a supporting part (32), which abuts against the port of the bushing (6) to push the bushing (6) out of the support plate (2). A limiting part (33) is fixedly connected to one end of the supporting part (32) away from the positioning part (31), which abuts against the side wall of the support plate (2) to limit the pushing distance of the pressure block (3). The drive rod (4) is connected to one end of the limiting part (33) away from the abutment part (32), and the drive rod (4) is used to push the pressure block (3).

2. The support plate bushing disassembly and assembly tooling according to claim 1, characterized in that, The drive rod (4) is threaded onto the support platform (5). The feed direction of the drive rod (4) extends along the length direction of the support platform (5). The end of the drive rod (4) away from the pressure block (3) is connected to a drive member (8). The drive member (8) is used to rotate the drive rod (4).

3. The support plate bushing disassembly and assembly tooling according to claim 2, characterized in that, The fixing plate (1) is located at one end of the support platform (5) away from the driving member (8).

4. The support plate bushing disassembly and assembly fixture according to claim 3, characterized in that, The positioning part (31) has a chamfer on the side near the fixing plate (1), and a guide ring is provided at the connection between the positioning part (31) and the abutment part (32).

5. The support plate bushing disassembly and assembly tooling according to claim 4, characterized in that, The pressure block (3) is provided with a positioning groove (34) inside. The positioning groove (34) is coaxially arranged with the pressure block (3). The bottom surface of the locking groove (11) is provided with a positioning rod (7). When the support plate (2) is connected with the locking groove (11), the positioning rod (7) extends into the bushing (6). The positioning rod (7) can extend into the positioning groove (34).

6. The support plate bushing disassembly and assembly tooling according to claim 5, characterized in that, The depth of the locking groove (11) is greater than the length of the bushing (6) and less than the length of the positioning rod (7).

7. The support plate bushing disassembly and assembly tooling according to claim 3, characterized in that, A connecting bearing is sleeved between the pressure block (3) and the drive rod (4).

8. The support plate bushing disassembly and assembly tooling according to claim 2, characterized in that, The drive rod (4) is detachably connected to a rocker arm at one end near the drive member (8).

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