A four square platform motor train unit axle box spring adjustment pad anti-dislocation tool

Abstract

The utility model discloses a four square platform motor train unit axle box spring adjusting pad anti -misplacement frock relates frock technical field, including left clamping arm and right clamping arm, one end of left clamping arm is rotatoryly connected one end of right clamping arm, is used for making the clamping space of adjustable size between left clamping arm and right clamping arm, still includes locking mechanism, the locking mechanism is used for locking left clamping arm and right clamping arm after clamping in place, through left clamping arm and right clamping arm clamping axle box spring adjusting pad and anti -vibration rubber, play better spacing effect, in the process of frame assembly, make axle box spring adjusting pad and anti -vibration rubber not be eccentric force and produce the deviation, has reduced the error rate when assembling.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, specifically to a tooling for preventing misalignment of the spring adjusting pad of a four-sided platform EMU axle box. Background Technology

[0002] Currently, in the advanced maintenance assembly process of EMU bogies, axle box spring adjusting pads and vibration damping rubber need to be installed under the axle box springs before assembly. During frame assembly, the axle box springs are subjected to eccentric forces, causing the adjusting pads and vibration damping rubber in contact with the axle box springs to also be subjected to eccentric forces, resulting in misalignment of the adjusting pads, including circumferential and radial misalignment. Statistics show a misalignment rate of up to 50%, requiring adjustment during the bogie preparation process. Adjustment requires two people, takes 5 minutes to adjust a single position, and 320 minutes of manual time for a whole train set, significantly reducing the efficiency of advanced bogie maintenance, increasing the labor intensity of workers, and posing safety hazards. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a four-sided platform EMU axle box spring adjusting pad anti-misalignment tooling to solve the shortcomings of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a four-sided platform EMU axle box spring adjusting pad anti-misalignment tooling, including a left clamping arm and a right clamping arm, one end of the left clamping arm is rotatably connected to one end of the right clamping arm, so as to form an adjustable clamping space between the left clamping arm and the right clamping arm, and also includes a locking mechanism, which is used to lock the left clamping arm and the right clamping arm after clamping in place.

[0005] Furthermore, the locking mechanism includes a screw and a nut, a hinge seat is fixed on the left clamping arm, the screw is hinged to the hinge seat, and the nut is threaded onto the screw.

[0006] Furthermore, a limiting seat is fixed on the right clamping arm, and a receiving groove is provided on the top of the limiting seat. The screw passes through the receiving groove, and the nut abuts against the side wall of the limiting seat.

[0007] Furthermore, the top of the hinge seat is provided with a mounting groove, and a hinge shaft is provided in the mounting groove. The hinge shaft is connected to the hinge seat, and one end of the screw is movably sleeved on the hinge shaft.

[0008] Furthermore, it also includes a rotating mechanism, which comprises a bolt and a rotating nut, the bolt being movably connected through the left clamping arm and threadedly connected to the right clamping arm with the rotating nut.

[0009] Furthermore, both the left and right clamping arms are provided with arc-shaped clamping bodies, and the end face of the arc-shaped clamping body near the clamping space is arc-shaped.

[0010] Furthermore, a polyurethane elastomer is fixed to the arc surface of the arc-shaped clamping body near the clamping space.

[0011] The beneficial effects of this utility model are: 1. The axle box spring adjusting pad and the anti-vibration rubber are clamped by the left and right clamping arms, which plays a good limiting role. During the frame assembly process, the axle box spring adjusting pad and the anti-vibration rubber are not offset by eccentric force, which reduces the error rate during assembly.

[0012] 2. The use of this tooling significantly reduces the time required for adjusting the pads on each EMU train, effectively improving efficiency. Attached Figure Description

[0013] Figure 1 This is a top view of a four-sided platform EMU axle box spring adjusting pad anti-misalignment tooling according to the present invention; Figure 2 This is a side view of a four-sided platform EMU axle box spring adjusting pad anti-misalignment tooling according to the present invention; In the figure, 1-left clamping arm, 2-right clamping arm, 3-screw, 4-nut, 5-hinged seat, 6-limiting seat, 7-accommodating groove, 8-mounting groove, 9-hinged shaft, 10-bolt, 11-rotating nut, 12-arc-shaped clamping body. Detailed Implementation

[0014] Example 1 like Figure 1 and Figure 2As shown, a four-sided platform EMU axle box spring adjusting pad anti-misalignment fixture includes a left clamping arm 1 and a right clamping arm 2. One end of the left clamping arm 1 is rotatably connected to one end of the right clamping arm 2, forming an adjustable clamping space between the left clamping arm 1 and the right clamping arm 2. It also includes a locking mechanism to lock the left clamping arm 1 and the right clamping arm 2 in place after clamping. During fixture installation, both the left clamping arm 1 and the right clamping arm 2 deflect away from the clamping space, increasing the clamping space and placing the axle box spring adjusting pad and the anti-vibration rubber within the clamping space. Then, the left clamping arm 1 and the right clamping arm 2 deflect and contact the axle box spring adjusting pad and the anti-vibration rubber, providing a good limiting effect. During frame assembly, this prevents the axle box spring adjusting pad and the anti-vibration rubber from shifting due to eccentric force. This tooling reduces the error rate during assembly; it significantly shortens the operation time. With the use of this tooling, the adjustment time for each EMU train has been reduced from 320 minutes to 64 minutes, increasing efficiency by 4 times; it also significantly reduces the labor intensity of operators. Along with the significant reduction in workload, the labor intensity of operators has also been significantly reduced; the risk of occupational safety has been reduced. The hydraulic tooling used for shim adjustment has the safety risk of sudden pressure release that could crush the operator's fingers. With the reduction in workload, the probability of injury has also been greatly reduced; secondly, it reduces the time required for advanced maintenance of EMU trains. With the annual increase in the amount of train maintenance, reducing maintenance time and ensuring on-time delivery are of paramount importance. The reduction in maintenance time through this tooling ensures that EMU trains can complete maintenance and be put into operation in a timely manner.

[0015] Example 2 Based on Example 1, such as Figure 1 As shown, both the left clamping arm 1 and the right clamping arm 2 are provided with arc-shaped clamping bodies 12. The end face of the arc-shaped clamping body 12 near the clamping space is arc-shaped. The outline size of the arc-shaped clamping body 12 is designed according to the outer diameter of the adjusting pad and the anti-vibration rubber, which has a good clamping effect.

[0016] Furthermore, a polyurethane elastomer is fixed to the arc surface of the arc-shaped clamping body 12 near the clamping space, which has good elasticity, compressive strength, and resilience. Since the diameters of the adjusting pad and the anti-vibration rubber may be inconsistent, the polyurethane elastomer can ensure a close fit between the tooling and the axle box spring adjusting pad and the anti-vibration rubber after locking, providing good deformation fit and sufficient support force.

[0017] Example 3 Based on Embodiment 2, both the left clamping arm 1 and the right clamping arm 2 are provided with strip-shaped grooves, and the arc-shaped clamping body 12 is provided with through holes. The tail of the screw passes through the through holes and is connected to the strip-shaped groove with a clamping nut. The head of the screw contacts the arc-shaped clamping body 12, realizing the detachable connection of the arc-shaped clamping body 12. The arc-shaped clamping body 12 can be installed according to the size of the adjusting pad and the anti-vibration rubber. The clamping nut can be removed and the screw can be removed to replace the arc-shaped clamping body 12. The setting of the strip-shaped groove can adjust the installation position of the arc-shaped clamping body 12, which is convenient for fine-tuning the position of the arc-shaped clamping body 12 according to the actual situation.

[0018] Example 4 Based on Example 3, such as Figure 1 As shown, the locking mechanism includes a screw 3 and a nut 4. A hinge seat 5 is fixed on the left clamping arm 1, and the screw 3 is hinged to the hinge seat 5. The nut 4 is threaded onto the screw 3. A limit seat 6 is fixed on the right clamping arm 2. A receiving groove 7 is provided on the top of the limit seat 6, through which the screw 3 passes. The nut 4 abuts against the side wall of the limit seat 6. An installation groove 8 is provided on the top of the hinge seat 5, and a hinge shaft 9 is provided in the installation groove 8. The hinge shaft 9 connects to the hinge seat 5. One end of the screw 3 is movably sleeved on the hinge shaft 9. Loosening the nut... 4. Separate the nut 4 from the limiting seat 6, allowing the screw 3 to be deflected out from above the receiving groove 7. This allows the left clamping arm 1 and right clamping arm 2 to be deflected away from the clamping space, thus releasing the fixture. During fixture installation, bring the left clamping arm 1 and right clamping arm 2 into contact with the adjusting pad and the anti-vibration rubber. Then, deflect the screw 3 into the receiving groove 7 and tighten the nut 4 near the limiting seat 6. This tightens the clamping arms 1 and right clamping arm 2 against the adjusting pad and the anti-vibration rubber, locking the left and right clamping arms 1 and right clamping arms 2 and making the fixture more stable. In practice, the size of the receiving groove 7 is larger than the diameter of the screw 3, allowing the screw 3 sufficient space to move within the receiving groove 7, ensuring that the screw 3 does not interfere with the limiting seat 6 when clamping the adjusting pad and the anti-vibration rubber.

[0019] Example 5 Based on Example 4, such as Figure 1 and Figure 2 As shown, it also includes a rotating mechanism, which includes a bolt 10 and a rotating nut 11. The bolt 10 moves through the threaded connection between the left clamping arm 1 and the right clamping arm 2 and the rotating nut 11. The rotating screw 11 does not press against the left clamping arm 1 and the right clamping arm 2, so that the left clamping arm 1 and the right clamping arm 2 can deflect to adjust the tooling of the pad and the anti-vibration rubber.

Claims

1. A tooling for preventing misalignment of the spring adjusting pad in a four-sided platform EMU axle box, characterized in that, It includes a left clamping arm (1) and a right clamping arm (2). One end of the left clamping arm (1) is rotatably connected to one end of the right clamping arm (2) to form an adjustable clamping space between the left clamping arm (1) and the right clamping arm (2). It also includes a locking mechanism, which is used to lock the left clamping arm (1) and the right clamping arm (2) after clamping. The locking mechanism includes a screw (3) and a nut (4). A hinge seat (5) is fixed on the left clamping arm (1), and the screw (3) is hinged to the hinge seat (5). The nut (4) is threaded onto the screw (3), and a limiting seat (6) is fixed on the right clamping arm (2). The top of the limiting seat (6) is provided with a receiving groove (7), the screw (3) passes through the receiving groove (7), the nut (4) abuts against the side wall of the limiting seat (6), the top of the hinge seat (5) is provided with an installation groove (8), and a hinge shaft (9) is provided in the installation groove (8). The hinge shaft (9) is connected to the hinge seat (5), and one end of the screw (3) is movably sleeved on the hinge shaft (9).

2. The anti-misalignment tooling for the axle box spring adjusting pad of a four-sided platform EMU according to claim 1, characterized in that, It also includes a rotating mechanism, which includes a bolt (10) and a rotating nut (11), the bolt (10) being movably connected through the left clamping arm (1) and the right clamping arm (2) to the rotating nut (11).

3. The anti-misalignment tooling for the axle box spring adjusting pad of a four-sided platform EMU according to claim 1, characterized in that, Both the left clamping arm (1) and the right clamping arm (2) are provided with arc-shaped clamping bodies (12), and the end face of the arc-shaped clamping body (12) near the clamping space is arc-shaped.

4. The anti-misalignment tooling for the axle box spring adjusting pad of a four-sided platform EMU according to claim 3, characterized in that, The arc-shaped clamping body (12) has a polyurethane elastomer fixed on its arc surface near the clamping space.

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