A kind of for motor train unit height adjustment valve rear end cover bearing dismounting frock

Abstract

The utility model discloses a kind of for EMU height adjustment valve rear end cover bearing dismounting tool, comprising: bottom plate, support plate and connecting plate are sequentially arranged from bottom to top;The bottom plate is connected between support plate by multiple support rods, and the support plate is supported to make its reserved gap between bottom plate, the support plate is connected between connecting plate by connecting rod, and the connecting plate is supported to make its reserved gap between support plate;Connecting plate is equipped with screw rod that moves up and down, the middle of support plate is equipped with hollow, and this screw rod is vertically arranged, and correspond with hollow position in the middle of support plate. Only need to place height adjustment valve rear end cover on support plate after dismounting is completed to adjust its position, then dismounting of bearing can be completed by screw rod pushing, avoid the damage of height adjustment valve rear end cover or bearing when bearing is dismounted in traditional dismounting method using violent tool, and the tool of the utility model is more convenient to use, improve the efficiency of bearing dismounting.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of bearing disassembly technology, and more specifically, relate to a tooling for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train. Background Technology

[0002] In the maintenance system of high-speed trains, bogie overhauls at level three and above are crucial for ensuring the safe and stable operation of the trains. The disassembly of the rear end cover bearing of the height adjustment valve is a vital component of this overhaul. As the core control component of the high-speed train's air spring system, the height adjustment valve automatically inflates or deflates the air springs by sensing changes in the distance between the car body and the bogie in real time. This ensures that the car floor is at the same height as the platform and rail surface, facilitating passenger boarding and alighting while effectively preventing coupling problems caused by height differences. As the overhaul progresses, to ensure the continued normal function and service life of the height adjustment valve, the rear end cover bearing needs to be disassembled, inspected, or replaced. Therefore, this disassembly is an indispensable step in the high-level bogie overhaul.

[0003] In existing technologies, the disassembly of the bearing on the rear end cover of a height adjustment valve is mainly carried out by on-site workers using conventional tools such as wrenches, taps, and pliers. The specific work process is as follows: First, the worker wraps the rear end cover of the height adjustment valve with a cloth, and then fixes the wrapped rear end cover to the pliers; next, the worker uses a wrench to fix the tap, and then performs tapping operation at the designated position on the rear end cover. During the tapping process, the worker needs to accurately control the force and ensure that the tap is aligned to prevent the tap from shifting; after the tapping is completed and the bearing is removed, the worker opens the front panel and then uses a wrench and pliers to remove the bearing from the tap on the height adjustment valve.

[0004] From the perspective of actual operation, the existing technology for disassembling the end cover bearing of the height adjustment valve has significant shortcomings. On the one hand, the operation efficiency is low. The entire disassembly process requires operators to complete multiple steps, and each step requires high precision, resulting in a long time consumption for a single disassembly operation. On the other hand, the disassembly process has many inconveniences, mainly reflected in the poor compatibility of tools. When wrenches, taps, pliers, and other tools are used together, it is difficult to achieve efficient coordination. At the same time, positioning deviations are prone to occur during the tapping process, which not only increases the difficulty of the operation but may also cause the tap to shift due to inaccurate positioning, affecting the smooth progress of subsequent disassembly operations and even causing additional damage to the height adjustment valve itself. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a fixture for disassembling the bearing on the rear end cover of a height adjustment valve in a high-speed train. The rear end cover of the height adjustment valve is fixed to a support plate, and its position is adjusted so that the bearing aligns with the lead screw. The lead screw is then moved downwards until its lower end contacts the bearing. Continuing to move the lead screw downwards pushes the bearing off the rear end cover of the height adjustment valve, thus achieving the disassembly of the bearing. After disassembling the rear end cover of the height adjustment valve, it is simply placed on the support plate and its position adjusted. Then, the bearing is disassembled by pushing with the lead screw. This avoids the damage to the rear end cover or bearing caused by the use of forceful tools during bearing disassembly in traditional methods. Furthermore, the fixture of this utility model is more convenient to use and improves the efficiency of bearing disassembly.

[0006] To achieve the above objectives, this utility model provides a tooling for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train, comprising: a base plate, a support plate, and a connecting plate arranged sequentially from bottom to top; The base plate and the support plate are connected by multiple support rods, which support the support plate to make a gap between it and the base plate. The support plate and the connecting plate are connected by connecting rods, which support the connecting plate to make a gap between it and the support plate. The connecting plate is provided with a screw that moves up and down, and the support plate has a hollow in the middle. The screw is set vertically and corresponds to the position of the hollow in the middle of the support plate.

[0007] Furthermore, the bottom end of the connecting rod is connected to the support plate via a connecting seat. The connecting seat is fixed to the support plate by bolts and has two clamping blocks arranged in half. The two clamping blocks are connected by bolts, and after the two clamping blocks are spliced ​​together, there is a circular hole in the middle with the same diameter as the connecting rod. The connecting rod is located between the two clamping blocks, and the tightness of the clamping blocks is adjusted by bolts to fix the connecting rod.

[0008] Furthermore, the top of the connecting rod is provided with a height adjustment seat, which has two clamping blocks arranged in half. The two clamping blocks are connected by bolts, and after the two clamping blocks are spliced ​​together, there is a through hole in the middle with the same diameter as the connecting rod. The connecting rod passes through the through hole, and the tightness of the clamping blocks is adjusted by bolts to adjust and fix the position of the height adjustment seat on the connecting rod.

[0009] Furthermore, one end of the connecting plate is fixed to the adjusting height seat by bolts, and moves up and down along the connecting rod with the adjusting height seat.

[0010] Furthermore, friction material is provided on the contact surface between the clamping block of the connecting seat and the connecting rod to enhance friction with the connecting rod and achieve better fixation.

[0011] Furthermore, the other end of the connecting plate has a through hole, the top surface of the connecting plate is provided with an upper sleeve at the through hole, and the bottom surface of the connecting plate is provided with a lower sleeve at the through hole. Both the upper sleeve and the lower sleeve are coaxially arranged with the through hole.

[0012] Furthermore, the lead screw passes through the upper sleeve and the lower sleeve, the surface of the lead screw is provided with external threads, and the inner walls of the upper sleeve and the lower sleeve are provided with internal threads. The lead screw is connected to the upper sleeve and the lower sleeve by threads.

[0013] Furthermore, a rotating rod is provided at the top of the lead screw, which is arranged laterally and fixedly connected to the lead screw; The bottom end of the lead screw is provided with a top head, which is connected to the lead screw through a drill chuck. One end of the drill chuck is fixed to the lead screw, and the other end is connected to the top head.

[0014] Furthermore, the support plate is also provided with a fixing seat, and the center of the fixing seat is provided with a hollow circular hole, which corresponds to the position of the hollowed-out part in the middle of the support plate. A raised limiting ring is provided around the outer periphery of the hollow circular hole, and the limiting ring falls in the hollowed-out part of the support plate.

[0015] Furthermore, threaded holes are provided on both sides of the fixing base, and limit holes are provided on both sides of each threaded hole. A screw is provided in the threaded hole and a limit rod is provided in the limit hole. The end of the limiting rod away from the limiting hole is fixed with a clamping plate. A through hole is opened in the middle of the clamping plate, and a bearing is installed in the hole. The screw passes through the inner ring of the bearing and is fixed thereto.

[0016] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects: 1. This utility model provides a tooling for disassembling the bearing on the rear end cover of a height adjusting valve. The rear end cover of the height adjusting valve is fixed to a support plate. Its position is adjusted so that the bearing aligns with the lead screw. The lead screw is then moved downwards until its lower end contacts the bearing. Continuing to move the lead screw downwards pushes the bearing off the rear end cover of the height adjusting valve, thus achieving the disassembly of the bearing. After disassembling the rear end cover of the height adjusting valve, it is simply placed on the support plate and its position adjusted. Then, the bearing is disassembled by pushing with the lead screw. This avoids the damage to the rear end cover or bearing caused by the use of forceful tools in traditional disassembly methods. Furthermore, this tooling is more convenient to use and improves the efficiency of bearing disassembly.

[0017] 2. The height adjustment valve rear cover bearing disassembly fixture of this utility model can detachably fix the connecting rod to the support plate through the connecting seat. When it is necessary to transport or store, it can be directly removed and stored to avoid occupying space. Moreover, when the structure is damaged, only the damaged parts need to be replaced, saving maintenance costs.

[0018] 3. The height adjustment valve rear end cover bearing disassembly fixture of this utility model involves placing the height adjustment valve rear end cover on the fixed base, and then temporarily fixing it by cranking the hand crank to drive the clamping plates at both ends to clamp the rear end cover of the height adjustment valve. This ensures that the bearing on the rear end cover always corresponds to the position of the top head during disassembly. During this process, the movement direction of the clamping plates is limited by the limiting rod to prevent rotation during movement. Attached Figure Description

[0019] Figure 1 This is a front view of the structure of a tooling for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train, according to an embodiment of the present invention. Figure 2 This is a side view of the structure of a tooling for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train, according to an embodiment of the present invention. Figure 3 This is an attached structural view of a tooling for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train, according to an embodiment of the present invention. Figure 4 This is a first-view schematic diagram of a fixing seat structure for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train, according to an embodiment of the present invention. Figure 5 This is a second-view schematic diagram of a fixing seat structure for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train, according to an embodiment of the present invention.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-base plate, 2-support plate, 3-support rod, 4-foot, 5-connecting rod, 6-connecting seat, 7-connecting plate, 8-height adjustment seat, 9-upper sleeve, 10-lower sleeve, 11-lead screw, 12-top, 13-rotating rod, 14-fixed seat, 141-screw, 142-limiting rod, 143-clamping plate, 144-hand crank, 15-hollowed-out round hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figure 1-3As shown in the figure, this utility model embodiment provides a tooling for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train. It includes a base plate 1, a support plate 2, and a connecting plate 7 arranged sequentially from bottom to top. The base plate 1 and the support plate 2 are connected by multiple support rods 3, which support the support plate 2 to create a gap between it and the base plate 1. The support plate 2 and the connecting plate 7 are connected by connecting rods 5, which support the connecting plate 7 to create a gap between it and the support plate 2. The connecting plate 7 is equipped with a vertically movable lead screw 11. The support plate 2 has a hollow center, and the lead screw 11 is vertically positioned, corresponding to the hollow center of the support plate 2. In use, the rear end cover of the height adjustment valve is fixed to the support plate 2. The position is adjusted so that the bearing aligns with the lead screw 11. The lead screw 11 is then moved downwards until its lower end contacts the bearing. Continuing to move the lead screw 11 downwards pushes the bearing off the rear end cover of the height adjustment valve, thus achieving the disassembly of the bearing on the rear end cover of the height adjustment valve. After the rear end cover of the height adjustment valve is disassembled, it is placed on the support plate 2 and its position is adjusted. Then, the bearing can be disassembled by pushing with the lead screw 11. This avoids the damage to the rear end cover of the height adjustment valve or the bearing caused by the use of violent tools when disassembling the bearing in the traditional disassembly method. In addition, the tooling of this utility model is more convenient to use and improves the efficiency of bearing disassembly.

[0023] It is understood that a gap is reserved between the base plate 1 and the support plate 2, so that when the bearing is pushed, it falls through the gap, providing space for the bearing to be disassembled.

[0024] As a further preferred embodiment, a rubber buffer layer is provided on the upper surface of the base plate 1, and a baffle is provided around the base plate 1. After the bearing is disassembled, it falls directly onto the rubber buffer layer to avoid collision with the base plate and damage. After falling onto the rubber buffer layer, the baffle provides a limit to prevent the bearing from rolling outward, which facilitates the collection and storage of the bearing after disassembly.

[0025] The bottom end of the connecting rod 5 is connected to the support plate 2 via a connecting seat 6. The connecting seat 6 is fixed to the support plate 2 with bolts and has two clamping blocks arranged in half. The two clamping blocks are connected by bolts, and when spliced ​​together, they form a circular hole with the same diameter as the connecting rod 5. The connecting rod 5 is positioned between the two clamping blocks, and the tightness of the clamping blocks is adjusted by bolts to fix the connecting rod 5. Friction material is also provided on the contact surface between the clamping blocks and the connecting rod 5 to enhance friction and achieve better fixation.

[0026] It is understandable that by using the connecting seat 6 to detachably fix the connecting rod 5 to the support plate 2, it can be directly removed and stored when it needs to be moved or stored, thus avoiding taking up space. Moreover, if the structure is damaged, only the damaged parts need to be replaced, thus saving maintenance costs.

[0027] The top of the connecting rod 5 is equipped with a height adjustment seat 8, which has two clamping blocks arranged in half. The two clamping blocks are connected by bolts, and when spliced ​​together, they form a through hole with the same diameter as the connecting rod 5. The connecting rod 5 passes through this through hole, and the tightness of the clamping blocks is adjusted by bolts to adjust and fix the position of the height adjustment seat 8 on the connecting rod 5. One end of the connecting plate 7 is fixed to the height adjustment seat 8 by bolts. As the height adjustment seat 8 moves up and down along the connecting rod 5, the height of the connecting plate 7 can be adjusted. Friction material is also provided on the contact surface between the clamping blocks and the connecting rod 5 to enhance friction and achieve better fixation.

[0028] The other end of the connecting plate 7 has a through hole. The top surface of the connecting plate 7 is provided with an upper sleeve 9 at the through hole, and the bottom surface of the connecting plate 7 is provided with a lower sleeve 10 at the through hole. Both the upper sleeve 9 and the lower sleeve 10 are coaxially arranged with the through hole.

[0029] The lead screw 11 passes through the upper sleeve 9 and the lower sleeve 10. The surface of the lead screw 11 is provided with external threads, and the inner walls of the upper sleeve 9 and the lower sleeve 10 are provided with internal threads. The lead screw 11 is threadedly connected to the upper sleeve 9 and the lower sleeve 10. The lead screw 11 can be rotated to adjust its position in the height direction, thereby achieving axial pushing of the bearing.

[0030] The top end of the lead screw 11 is provided with a rotating rod 13, which is arranged horizontally and fixedly connected to the lead screw 11. By rotating the rotating rod 13, the lead screw 11 is driven to rotate circumferentially, thereby completing the pushing of the lead screw 11.

[0031] The bottom end of the lead screw 11 is provided with a top head 12, which is connected to the lead screw 11 via a drill chuck. One end of the drill chuck is fixed to the lead screw 11, and the other end is connected to the top head 12. Different specifications of top heads 12 are connected via the drill chuck to accommodate bearings of different specifications. The bottom end of the top head 12 is a conical platform, which is used to connect with the bearing, thereby achieving the pushing action on the bearing.

[0032] The support plate 2 is also provided with a fixing seat 14, which has a perforated circular hole 15 at its center. The perforated circular hole 15 corresponds to the hollowed-out position in the middle of the support plate 2. A raised limiting ring is provided around the outer periphery of the perforated circular hole 15, which falls within the hollowed-out position of the support plate 2. The fixing seat 14 limits the rear end cover of the height adjustment valve, aligning the bearing with the perforated circular hole 15. Then, the screw 11 is rotated to push and disassemble the bearing.

[0033] like Figure 4 , 5As shown, the fixed base 14 has threaded holes on both sides, and each threaded hole has limit holes on both sides. A screw 141 is installed in the threaded hole, and a limit rod 142 is installed in the limit hole. A clamping plate 143 is fixed to the end of the limit rod 142 away from the limit hole. A through hole is opened in the middle of the clamping plate 143, and a bearing is installed in the hole. The screw 141 passes through the inner ring of the bearing and is fixed thereto. After the rear end cover of the height adjustment valve is placed on the fixed base 14, the rear end cover of the height adjustment valve is temporarily fixed by shaking the hand crank 144 to drive the clamping plates 143 at both ends to clamp the rear end cover of the height adjustment valve. This ensures that the bearing on the rear end cover always corresponds to the position of the top head 12 during disassembly. During this process, the movement direction of the clamping plate 143 is limited by the limit rod 142 to prevent it from rotating during movement.

[0034] The base plate 1 is also provided with support legs 4 at the four corners of its bottom surface. Optionally, the support legs 4 can be height-adjustable so that it can be placed stably on the bottom surface under different conditions.

[0035] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train, characterized in that, include: The bottom plate (1), support plate (2) and connecting plate (7) are arranged in order from bottom to top. The base plate (1) and the support plate (2) are connected by multiple support rods (3) to support the support plate (2) so that a gap is reserved between it and the base plate (1). The support plate (2) and the connecting plate (7) are connected by connecting rods (5) to support the connecting plate (7) so that a gap is reserved between it and the support plate (2). The connecting plate (7) is provided with a screw rod (11) that moves up and down. The support plate (2) has a hollow in the middle. The screw rod (11) is set vertically and corresponds to the hollow in the middle of the support plate (2).

2. The fixture for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train according to claim 1, characterized in that, The bottom end of the connecting rod (5) is connected to the support plate (2) through the connecting seat (6). The connecting seat (6) is fixed to the support plate (2) by bolts. It is provided with two clamping blocks that are set in half. The two clamping blocks are connected by bolts. After the two clamping blocks are spliced, the middle of them forms a circular hole with the same diameter as the connecting rod (5). The connecting rod (5) is located between the two clamping blocks. The tightness of the clamping blocks is adjusted by bolts to fix the connecting rod (5).

3. The fixture for disassembling the bearing of the rear end cover of the height adjustment valve of a high-speed train according to claim 2, characterized in that, The top of the connecting rod (5) is provided with a height adjustment seat (8). The height adjustment seat (8) is provided with two clamping blocks arranged in half. The two clamping blocks are connected by bolts. After the two clamping blocks are spliced ​​together, there is a through hole in the middle with the same diameter as the connecting rod (5). The connecting rod (5) passes through the through hole. The tightness of the clamping blocks is adjusted by bolts to adjust the position of the height adjustment seat (8) on the connecting rod (5) and fix it.

4. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train, as described in claim 3, is characterized in that... One end of the connecting plate (7) is fixed to the adjusting height seat (8) by bolts, and moves up and down along the connecting rod (5) with the adjusting height seat (8).

5. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train, as described in claim 4, is characterized in that... Friction material is also provided on the contact surface between the clamping block of the connecting seat (6) and the height adjustment seat (8) and the connecting rod (5) to enhance the friction between them and the connecting rod (5) and achieve better fixation.

6. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train, as described in any one of claims 1-5, characterized in that... The other end of the connecting plate (7) has a through hole. The top surface of the connecting plate (7) is provided with an upper sleeve (9) at the through hole, and the bottom surface of the connecting plate (7) is provided with a lower sleeve (10) at the through hole. Both the upper sleeve (9) and the lower sleeve (10) are coaxially arranged with the through hole.

7. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train, as described in claim 6, is characterized in that... The lead screw (11) passes through the upper sleeve (9) and the lower sleeve (10). The surface of the lead screw (11) is provided with external threads, and the inner walls of the upper sleeve (9) and the lower sleeve (10) are provided with internal threads. The lead screw (11) is connected to the upper sleeve (9) and the lower sleeve (10) by threads.

8. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train, as described in claim 7, is characterized in that... The top end of the lead screw (11) is provided with a rotating rod (13), which is arranged laterally and is fixedly connected to the lead screw (11); The bottom end of the lead screw (11) is provided with a top head (12), which is connected to the lead screw (11) through a drill chuck. One end of the drill chuck is fixed to the lead screw (11), and the other end is connected to the top head (12).

9. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train according to any one of claims 1-5, characterized in that, The support plate (2) is also provided with a fixing seat (14), and the center of the fixing seat (14) is provided with a hollow circular hole (15). The hollow circular hole (15) corresponds to the hollowed-out position in the middle of the support plate (2). A raised limiting ring is provided around the outer periphery of the hollow circular hole (15), and the limiting ring falls in the hollowed-out area of ​​the support plate (2).

10. A fixture for disassembling the bearing of the rear end cover of a height adjustment valve in a high-speed train, as described in claim 9, is characterized in that... The fixed base (14) is also provided with threaded holes on both sides, and each threaded hole is provided with limit holes on both sides. A screw (141) is provided in the threaded hole and a limit rod (142) is provided in the limit hole. The limiting rod (142) is fixed with a clamping plate (143) at one end away from the limiting hole. A through hole is opened in the middle of the clamping plate (143), and a bearing is provided in the hole. The screw (141) passes through the inner ring of the bearing and is fixed thereto.

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