Special tool for damping force test of 300AF anti-snaking shock absorber of high-speed train
By designing a floating shaft and a tightening bolt, the problem of screw rotation damaging the lifting ring is solved, achieving stability and data accuracy in the damping force test. The clamping process is simple and highly accurate.
Patent Information
- Application Number
- CN202520173280.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-26
AI Technical Summary
In the prior art, the screw rotates during the locking process with the lifting ring, causing damage to the lifting ring. Furthermore, the loosening of the screw leads to an unstable damping force-stroke curve, affecting the accuracy of the test data.
The design employs a floating shaft and a tightening bolt. The floating shaft does not rotate in contact with the lifting ring, and the elastic element provides a stable clamping force, preventing the screw from directly rotating and damaging the lifting ring. It also automatically loosens after the test is completed.
It effectively prevents damage to the lifting rings and loosening of screws, ensures the stability and reliability of damping force test data, and improves clamping efficiency and accuracy.
Smart Images
Figure CN223692051U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to high -speed train 300AF anti -snaking damper technical field, concretely relates to a special frock for high -speed train 300AF anti -snaking damper damping force test. BACKGROUND
[0002] With the rise of high-speed rail industry in China, the track traffic industry in China has strong development momentum, and the world is far ahead. The anti-snaking damper is the most critical damper among all kinds of dampeders of the high-speed train bogie, and its damping characteristics play a key role in the stability of the high-speed train operation. The anti-snaking damper has the largest requirement for damping force, so the rigidity of the frock is required to be high when the damping characteristic test is performed.
[0003] Currently, when the 300AF anti-snaking damper is subjected to the damping characteristic test, a screw and a clamp body are used to directly press two lifting rings. During the damping performance test of the damper, the rotation of the screw can damage the lifting ring, thereby reducing the strength of the lifting ring. Meanwhile, during the reciprocating stretching and compression test of the damper, the screw is prone to loosening, which can cause the instability of the damping force-displacement curve and the distortion of the damping characteristic data. SUMMARY
[0004] The utility model wants to solve the technical problem to provide a special frock for high-speed train 300AF anti-snaking damper damping force test, solve the problem that the screw is damaged in the process of being locked with the lifting ring surface, even a pit is generated, and the strength and appearance of the lifting ring are reduced.
[0005] The technical scheme for solving the above technical problem is as follows: a special frock for high-speed train 300AF anti-snaking damper damping force test, the 300AF anti-snaking damper includes a main body and a lifting ring connected to both ends of the main body, and comprises a clamp body and a plurality of floating shafts and a pressing bolt. A support groove that can adapt to the lifting ring is formed on the clamp body. A main body avoiding opening is arranged on one side wall of the support groove. A plurality of bolt holes are formed on the side of the clamp body away from the main body avoiding opening. The bolt holes are arranged vertically to the axis of the lifting ring. The floating shafts are located in the bolt holes and abut against the end of the pressing bolt at one end. The other end of the floating shafts can abut against and press the ring surface of the lifting ring through the rotation of the pressing bolt.
[0006] On the basis of the above technical scheme, the utility model can also be improved as follows.
[0007] The utility model discloses a special tool for damping force test of 300AF anti-snaking shock absorber of high-speed train as described above further, the floating axle corresponds the arc surface of the ring surface of the lifting ring one end with the ring surface adaptation.
[0008] The utility model discloses a special tool for damping force test of 300AF anti-snaking shock absorber of high-speed train as described above further, the floating axle corresponds the arc surface of the ring surface of the lifting ring one end with the ring surface adaptation.
[0009] The utility model discloses a special tool for damping force test of 300AF anti-snaking shock absorber of high-speed train as described above further, the floating axle and top tight bolt are two groups, and the intersection point of the center axis with the main body center axis corresponds the center point of the lifting ring.
[0010] The utility model discloses a special tool for damping force test of 300AF anti-snaking shock absorber of high-speed train as described above further, the groove bottom of support groove is provided with the through -hole less than or equal to the inner diameter of the lifting ring.
[0011] The utility model discloses a special tool for damping force test of 300AF anti-snaking shock absorber of high-speed train as described above further, the groove bottom of support groove is provided with the through -hole less than or equal to the inner diameter of the lifting ring.
[0012] 2, the utility model discloses that the elastic part is provided on the floating axle, can utilize the elastic force of elastic part and realize automatic compensation and stable clamping, even in the reciprocating motion of shock absorber process can also keep constant clamping force, effectively prevent the problem of top tight bolt loosening, ensure the stability and reliability of test data.
[0013] 3, simultaneously because elastic part, can after the test is completed, the top tight bolt is unloaded after the reverse direction rotation, and the floating axle can be moved in the force of elastic part and releases the lifting ring in reverse, completes a clamping, release cycle.
[0014] 4, the utility model discloses that the clamping process is simple to operate, and the clamping efficiency and clamping precision are improved greatly. ACCURACY
[0015] Figure 1 It is the structure schematic diagram of existing 300AF anti-snaking shock absorber;
[0016] Figure 2 It is the special tool assembly explosion schematic diagram for damping force test of 300AF anti-snaking shock absorber of high-speed train of the utility model;
[0017] Figure 3 It is special tool assembly cross section diagram for the high speed train 300AF anti-snaking damper damping force test of the utility model,
[0018] Figure 4 It is the structure diagram of the clamp body of the special tool for the high speed train 300AF anti-snaking damper damping force test of the utility model,
[0019] Figure 5 It is the structure diagram of the floating axle of the special tool for the high speed train 300AF anti-snaking damper damping force test of the utility model,
[0020] Figure 6 It is the structure diagram of the jacking bolt of the special tool for the high speed train 300AF anti-snaking damper damping force test of the utility model.
[0021] In the drawing, the component list represented by each sign is as follows:
[0022] 10, main body, 20, lifting ring,
[0023] 1, clamp body, 2, reset spring, 3, floating axle, 4, jacking bolt, 5, threaded hole, 6, through hole, 7, bolt hole, 8, support groove, 9, main body avoiding mouth. DETAILED DESCRIPTION
[0024] The principle and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not used to limit the scope of the utility model.
[0025] According to the special tool for the high speed train 300AF anti-snaking damper damping force test of the utility model embodiment, Figure 1 As shown in the figure, the 300AF anti-snaking damper includes the main body 10 and the lifting ring 20 connected to both ends of the main body 10, as shown in the figure, Figures 2 to 6 It includes the clamp body 1 and multiple sets of floating axles 3 and jacking bolts 4, the support groove 8 suitable for the lifting ring 20 is formed on the clamp body 1, the side wall of the support groove 8 is provided with the main body avoiding mouth 9 penetrating the slot end, the side of the clamp body 1 away from the main body avoiding mouth 9 is provided with multiple bolt holes 7 in the circumferential direction, the bolt hole 7 is arranged vertically to the axis of the lifting ring 20, the floating axle 3 is located in the bolt hole 7 and abuts against the end of the jacking bolt 4 at one end, and the other end can abut and press tightly against the ring surface of the lifting ring 20 through the rotation of the jacking bolt 4. Therefore, the contact surface of the floating axle 3 and the lifting ring 20 will not rotate relatively in the process of the jacking bolt 4 rotating and jacking, which avoids the jacking bolt 4 directly rotating and jacking the lifting ring and reduces the risk of damaging the lifting ring.
[0026] Specifically, a threaded hole 5 is further formed in the body 10 on the side of the clamp body 1 away from the body escape hole 9, and the threaded hole 5 is connected with the support groove 8. A through hole 6 with a diameter less than or equal to the inner diameter of the lifting ring is formed in the bottom of the support groove 8, and the bottom surface of the through hole 6 is a support surface for the lifting ring.
[0027] In some embodiments, the floating shaft 3 is provided with a limiting flange 31 at one end of the floating shaft 3 corresponding to the end of the jacking bolt 4, and the limiting flange 31 has a diameter greater than or equal to the diameter of the end of the jacking bolt 4. An elastic member is sleeved on the floating shaft 3 and is limited between the limiting flange 31 and the ring surface of the lifting ring 20. Specifically, the elastic member is a return spring 2. Thus, the elastic force of the return spring 2 is used to automatically compensate and stably clamp, so that a constant clamping force can be maintained during the reciprocating motion of the shock absorber, the problem of loosening of the jacking bolt 4 is effectively prevented, and the stability and reliability of the test data are ensured. At the same time, after the test is completed, the jacking bolt is rotated in the opposite direction to release the force, and then the floating shaft can move in the opposite direction under the action of the elastic member to loosen the lifting ring, thereby completing a clamping and loosening cycle. The elastic modulus of the spring can be calculated according to the specific vibration test requirements.
[0028] In some embodiments, one end of the floating shaft 3 corresponding to the ring surface of the lifting ring 20 is an arc surface matched with the ring surface. Thus, the end of the floating shaft 3 can be tightly matched with the ring surface of the lifting ring 20.
[0029] In some specific examples, the floating shaft 3 and the jacking bolt 4 are two groups, and the intersection of the central axes of the two groups corresponds to the center point of the lifting ring 20. Specifically, the angle between the center lines of the two groups of floating shafts 3 and jacking bolts 4 can be set to 60 degrees.
[0030] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A special tool for high-speed train 300AF anti-snaking shock absorber damping force test, the high-speed train 300AF anti-snaking shock absorber comprising a main body and a lifting ring connected to both ends of the main body, characterized in that, The device comprises a clamp body and multiple sets of floating shafts and tightening bolts, the clamp body is provided with a supporting groove which is suitable for the lifting ring, one side wall of the supporting groove is provided with a main body avoiding opening which penetrates the notch end, multiple bolt holes are circumferentially arranged on the side of the clamp body which is far away from the main body avoiding opening, the bolt holes are arranged vertically to the axis of the lifting ring, the floating shafts are correspondingly arranged in the bolt holes and one end of the floating shafts abuts against the end of the tightening bolt, the other end of the floating shafts can abut against and be pressed by the ring surface of the lifting ring through the screwing of the tightening bolt.
2. The tooling for testing the damping force of the 300AF anti-snaking shock absorber of high-speed trains according to claim 1, characterized in that, The device further comprises elastic members, one end of the floating shafts is correspondingly provided with a limiting flange which is outwardly formed along the radial direction of the floating shafts, the elastic members are sleeved on the floating shafts and are limited between the limiting flanges and the ring surface of the lifting ring.
3. The tooling for testing the damping force of the 300AF anti-snaking shock absorber of high-speed trains according to claim 2, characterized in that, The elastic members are return springs.
4. The tooling for testing the damping force of the 300AF anti-snaking shock absorber of high-speed trains according to claim 1, characterized in that, One end of the floating shafts which corresponds to the ring surface of the lifting ring is an arc surface which is suitable for the ring surface.
5. The tooling for testing the damping force of the 300AF anti-snaking shock absorber of high-speed trains according to claim 1, characterized in that, The floating shafts and the tightening bolts are two sets, and the intersection of the central axes of the floating shafts and the main body is the center point of the lifting ring.
6. The tooling for testing the damping force of the 300AF anti-snaking shock absorber of high-speed trains according to claim 1, characterized in that, The groove bottom of the supporting groove is provided with a through hole which is smaller than or equal to the inner diameter of the lifting ring.