Coupler buffer

Abstract

The invention belongs to the technical field of railway vehicle damping, and particularly relates to a coupler buffer which comprises a guide rod, positioning and fixing assemblies arranged at the two ends of the guide rod and a buffer assembly arranged on the guide rod in a sleeving mode, and the buffer assembly is located between the positioning and fixing assemblies at the two ends. The buffer assembly comprises a plurality of partition plates arranged in a scattered mode and elastic bodies arranged between every two adjacent partition plates, the partition plates and the elastic bodies are matched through a multi-point concave-convex structure, and the partition plates and the elastic bodies can be mutually positioned and form a tandem type whole. Compared with a common structure that the partition plate and the elastic body are only attached, the positions of the partition plate and the elastic body are not prone to deviation, stability is higher, and damage caused by friction between the partition plate and the middle guide rod and uneven stress of the elastic body can be effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of rail vehicle vibration reduction, and in particular relates to a coupler buffer. Background Art

[0002] The main function of the coupler buffer in rail vehicles is to connect the locomotive and carriages or carriages together. It is used to mitigate the longitudinal impact and vibration caused by changes in traction during train operation or collisions between vehicles during starting, braking and shunting, as well as the lateral force of the wheels when the vehicle turns, thereby reducing the destructive effects of the vehicle body structure and improving the stability and comfort of train operation.

[0003] The existing coupler buffer device adopts a partition or an elastic body for positioning. During installation or long-term movement, the partition or the elastic body is easily deviated from the position, causing the partition and the middle guide rod to rub against each other or the elastic body to be unevenly stressed and cause damage. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a coupler buffer, in which the positions of the partition and the elastic body are not easily deviated, thereby avoiding the friction between the partition and the middle guide rod and the damage caused by uneven force on the elastic body.

[0005] The present invention provides a coupler buffer, comprising: Guide rod; Positioning and fixing components arranged at both ends of the guide rod; and A buffer component is sleeved on the guide rod and is located between the positioning and fixing components at both ends. The buffer component includes a plurality of dispersed partitions and an elastic body arranged between two adjacent partitions. The partitions and the elastic body are matched through a multi-point concave-convex structure.

[0006] Optionally, a plurality of positioning holes distributed in an annular shape are provided on the partition, and correspondingly, a plurality of protrusions distributed in an annular shape are provided on the elastic body, and the protrusions are embedded in the positioning holes one by one to form the multi-point concave-convex structure.

[0007] Optionally, a plurality of protrusions are provided on both sides of the elastic body, and the projections of the protrusions on both sides in the axial direction are staggered and distributed on a screen, and the number of positioning holes on the partition is the sum of the number of protrusions on the two sides of the elastic body.

[0008] Optionally, the number of protrusions on one side of the elastic body is 2-6.

[0009] Optionally, the cross-sectional shape of the protrusion is circular, the positioning hole is a circular hole, and before assembly, the diameter of the protrusion is larger than the diameter of the positioning hole.

[0010] Optionally, the elastomer has a cavity therein, and the cavity is in the shape of a body of revolution.

[0011] Optionally, the buffer assembly further includes a plurality of wear-resistant rings 2, the partition plate has a central hole, the wear-resistant ring 2 is arranged in the central hole, and the wear-resistant ring 2 is slidably sleeved on the guide rod.

[0012] Optionally, two ends of the second wear-resistant ring are respectively embedded in two adjacent elastic bodies.

[0013] Optionally, the positioning and fixing assembly includes: a fastening bolt threaded on the end of the guide rod and a connecting plate and a support plate slidably mounted on the guide rod in sequence, the support plate is fitted with a partition at one end, the connecting plate, the support plate and the partition at one end are fixed together by screws, and the fastening bolt abuts against the outer side of the connecting plate.

[0014] Optionally, one end of the guide rod is provided with a limiting groove around its periphery, and the connecting plate and the support plate in the positioning and fixing assembly at one end of the guide rod slide in cooperation with the limiting groove, and the length of the limiting groove is the maximum sliding distance of the connecting plate and the support plate.

[0015] The beneficial effect of the present invention is that the partition and the elastomer are matched through a multi-point concave-convex structure, so that the partition and the elastomer can be positioned with each other and form a series-type whole. Compared with the general partition and elastomer that are merely fitted together, the position of the partition and the elastomer in the present invention is not easy to deviate, and the stability is higher. It can effectively avoid the mutual friction between the partition and the middle guide rod and the damage caused by uneven force on the elastomer. Moreover, the partition and the elastomer are connected and matched into a whole without the need for additional connecting parts (such as screws or pins), which also avoids the influence of additional connecting parts on the buffering capacity of the partition and the elastomer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the longitudinal cross-sectional structure of the coupler buffer of the present invention; Figure 2 for Figure 1 A magnified view of area A in; Figure 3 for Figure 1 A magnified view of area B in FIG. Figure 4 It is a front structural schematic diagram of the partition of the present invention; Figure 5 It is a schematic diagram of the longitudinal cross-sectional structure of an elastic body of the present invention; Figure 6 for Figure 5 A magnified view of region C in FIG. Figure 7 It is a schematic diagram of the longitudinal cross-sectional structure of another elastomer of the present invention.

[0017] In the figure: 100, guide rod; 110, limit groove; 200, positioning and fixing assembly; 210, fastening bolt; 220, connecting plate; 230, supporting plate; 240, gasket; 250, screw; 260, wear-resistant ring 1; 300, buffer assembly; 310, partition; 311, positioning hole; 312, center hole; 320, elastomer; 321, protrusion; 322, cavity; 323, annular groove; 3231, straight section 1; 3232, inclined section; 3233, straight section 2; 330, wear-resistant ring 2. DETAILED DESCRIPTION

[0018] like Figure 1-7 As shown, a coupler buffer provided by the present invention includes: a guide rod 100, a positioning and fixing assembly 200 arranged at both ends of the guide rod 100, and a buffer assembly 300 sleeved on the guide rod 100, and the buffer assembly 300 is located between the positioning and fixing assemblies 200 at both ends, and the buffer assembly 300 includes a plurality of dispersed partitions 310 and an elastomer 320 arranged between two adjacent partitions 310, and the partitions 310 and the elastomer 320 are matched through a multi-point concave-convex structure.

[0019] Compared with the prior art, the coupler buffer provided by the present invention, the partition 310 and the elastomer 320 are matched through a multi-point concave-convex structure, so that the partition 310 and the elastomer 320 can be positioned with each other and form a series-type whole. Compared with the general partition 310 and the elastomer 320 that are merely fitted together, the positions of the partition 310 and the elastomer 320 in the present invention are not easy to deviate, and the stability is higher. It can effectively avoid the friction between the partition 310 and the middle guide rod and the damage caused by uneven force on the elastomer 320. Moreover, the partition 310 and the elastomer 320 are connected and matched into a whole without the need for additional connecting components (such as screws or pins), thereby avoiding the influence of additional connecting components on the buffering capacity of the partition 310 and the elastomer 320.

[0020] In one embodiment, Figure 3-5As shown, the partition 310 is provided with a plurality of positioning holes 311 distributed in an annular manner, and the corresponding elastic body 320 is provided with a plurality of protrusions 321 distributed in an annular manner, and the protrusions 321 are embedded in the positioning holes 311 one by one to form a multi-point concave-convex structure. In this way, the multi-point concave-convex structure is distributed in an annular manner, and the positioning force is distributed more evenly, which is conducive to maintaining overall stability. It can be understood that during assembly, a partition 310 is first sleeved on the guide rod 100, and then an elastic body 320 is sleeved and the protrusions 321 on one side are embedded in the positioning holes 311 on the partition 310, and the elastic deformation of the protrusions 321 is relied on to maintain stability and not easy to fall out, and then the second partition 310 is installed, and the protrusions 321 on the other side of the elastic body 320 are embedded in the positioning holes 311 on the second partition 310, and the remaining partitions 310 and elastic bodies 320 are installed in this way.

[0021] In one embodiment, multiple protrusions 321 are provided on both sides of the elastic body 320, and the projections 321 on both sides are staggered and distributed on a screen in the axial direction, and the number of positioning holes 311 on the partition 310 is the sum of the number of protrusions 321 on both sides of the elastic body 320. It can be understood that the multiple positioning holes 311 on the partition 310 are distributed on a ring, and the multiple protrusions 321 on one side of the elastic body 320 are matched with the multiple positioning holes 311 on the partition 310 at intervals, and the remaining multiple positioning holes 311 are matched with the multiple protrusions 321 on one side of another elastic body 320, so that the axial projections of the multi-point concave-convex structures of all the partitions 310 and the elastic body 320 on the buffer assembly 300 are on the same annular surface.

[0022] In another embodiment, Figure 7 As shown, multiple protrusions 321 are provided on both sides of the elastomer 320, and the axial projections of the protrusions 321 on both sides are staggered on two screens, so that the axial projections of all partitions 310 on the buffer assembly 300 and the multi-point concave-convex structure of the elastomer 320 are on two annular surfaces.

[0023] In one embodiment, the number of protrusions 321 on one side of the elastic body 320 is 2-6; preferably, the number of protrusions 321 on one side of the elastic body 320 is 4.

[0024] In one embodiment, the cross-sectional shape of the protrusion 321 is circular, the positioning hole 311 is a circular hole, and the diameter of the protrusion 321 before assembly is larger than the diameter of the positioning hole 311. When the partition 310 and the elastomer 320 are assembled, the protrusion 321 is elastically compressed and embedded in the positioning hole 311. The elasticity of the protrusion 321 has a tendency to elastically recover, thereby generating friction between the protrusion 321 and the positioning hole 311, making it difficult for the partition 310 and the elastomer 320 to separate.

[0025] In one embodiment, the elastic body 320 has a cavity 322 therein, and the cavity 322 is in the shape of a body of revolution. The collapse of the cavity 322 can more fully absorb energy and provide a better buffering effect.

[0026] In one embodiment, Figure 3 and Figure 4 The buffer assembly 300 also includes a plurality of wear-resistant rings 330. The partition 310 has a center hole 312. The wear-resistant ring 330 is arranged in the center hole 312. The wear-resistant ring 330 is slidably sleeved on the guide rod 100. Specifically, the partition 310 is engaged with the wear-resistant ring 330. In this way, hard friction between the partition 310 and the guide rod 100 is prevented, so that the partition 310 can move more smoothly during buffering, and the partition 310 is prevented from contacting the guide rod 100 due to uneven friction, which causes the partition 310 to deviate and causes uneven force on various parts of the elastomer 320, thereby deteriorating the buffering effect and improving the service life of the partition 310.

[0027] In one embodiment, Figure 3 and Figure 6 As shown, the two ends of the wear-resistant ring 330 are respectively embedded in two adjacent elastomers 320. Specifically, an annular groove 323 composed of a straight section 1 3231, a slope section 3232 and a straight section 2 3233 is provided on both sides of the elastomer 320, and the wear-resistant ring 330 is used to strengthen the positioning of the elastomer 320.

[0028] In one embodiment, the positioning and fixing assembly 200 includes: a fastening bolt 210 screwed to the end of the guide rod 100, and a connecting plate 220 and a supporting plate 230 which are sequentially slidably sleeved on the guide rod 100, the supporting plate 230 is fitted with a partition plate 310 at one end, the connecting plate 220, the supporting plate 230 and the partition plate 310 at one end are fixed together by screws 250, and the fastening bolt 210 abuts against the outer side of the connecting plate 220. Specifically, the connecting plate 220 is connected to the vehicle coupler, so as to transfer the kinetic energy of the vehicle body to the buffer. A gasket 240 is sleeved on the fastening bolt 210 to prevent the fastening bolt 210 from loosening.

[0029] In one embodiment, one end of the guide rod 100 is provided with a limiting groove 110 around its periphery, and the connecting plate 220 and the supporting plate 230 in the positioning and fixing assembly 200 at one end of the guide rod 100 are slidably matched with the limiting groove 110, and the length of the limiting groove 110 is the limit sliding distance of the connecting plate 220 and the supporting plate 230. Therefore, when the kinetic energy of the vehicle body exceeds the limit capacity of the buffer, the connecting plate 220 will abut against the top interface of the limiting groove 110, which can prevent the elastic body 320 from being over-compressed and damaged.

[0030] In one embodiment, Figure 2As shown, the inner ring of the connecting plate 220 is embedded with a wear-resistant ring 260, which is installed in the connecting plate 220 and is used for precise positioning of the connecting plate 220 and the guide rod 100. The connecting plate 220 can slide along the guide rod 100 through the wear-resistant ring 260.

[0031] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0032] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A coupler buffer, characterized in that: include: Guide rod (100); Positioning and fixing components (200) arranged at both ends of the guide rod (100); and A buffer assembly (300) is sleeved on a guide rod (100), and the buffer assembly (300) is located between the positioning and fixing assemblies (200) at both ends. The buffer assembly (300) comprises a plurality of dispersed partitions (310) and an elastic body (320) arranged between two adjacent partitions (310), and the partitions (310) and the elastic body (320) are matched via a multi-point concave-convex structure.

2. The coupler buffer according to claim 1, characterized in that: The partition plate (310) is provided with a plurality of positioning holes (311) distributed in an annular pattern, and the elastic body (320) is correspondingly provided with a plurality of protrusions (321) distributed in an annular pattern, wherein the protrusions (321) are embedded in the positioning holes (311) in a one-to-one correspondence to form the multi-point concave-convex structure.

3. The coupler buffer according to claim 2, characterized in that: Both surfaces of the elastic body (320) are provided with a plurality of protrusions (321), and the projections of the protrusions (321) on the two surfaces in the axial direction are staggered and distributed on a screen, and the number of the positioning holes (311) on the partition plate (310) is the sum of the numbers of the protrusions (321) on the two surfaces of the elastic body (320).

4. The coupler buffer according to claim 3, characterized in that: The number of protrusions (321) on one side of the elastic body (320) is 2-6.

5. The coupler buffer according to any one of claims 2 to 4, characterized in that: The cross-sectional shape of the protrusion (321) is circular, the positioning hole (311) is a circular hole, and before assembly, the diameter of the protrusion (321) is greater than the diameter of the positioning hole (311).

6. The coupler buffer according to any one of claims 1 to 4, characterized in that: The elastic body (320) has a cavity (322) therein, and the cavity (322) is in the shape of a body of revolution.

7. The coupler buffer according to any one of claims 1 to 4, characterized in that: The buffer assembly (300) further comprises a plurality of second wear-resistant rings (330); the partition plate (310) has a central hole (312); the second wear-resistant ring (330) is arranged in the central hole (312); and the second wear-resistant ring (330) is slidably sleeved on the guide rod (100).

8. The coupler buffer according to claim 7, characterized in that: The two ends of the second wear-resistant ring (330) are respectively embedded in two adjacent elastic bodies (320).

9. The coupler buffer according to any one of claims 1 to 4 and 8, characterized in that: The positioning and fixing assembly (200) comprises: a fastening bolt (210) screwed to the end of the guide rod (100), and a connecting plate (220) and a supporting plate (230) which are slidably mounted on the guide rod (100) in sequence, wherein the supporting plate (230) is fitted with a partition plate (310) at one end, and the connecting plate (220), the supporting plate (230) and the partition plate (310) at one end are fixed together by screws (250), and the fastening bolt (210) abuts against the outer side of the connecting plate (220).

10. The coupler buffer according to claim 9, characterized in that: One end of the guide rod (100) is provided with a limiting groove (110) around its outer circumference, and a connecting plate (220) and a supporting plate (230) in a positioning and fixing assembly (200) at one end of the guide rod (100) are slidably matched with the limiting groove (110), and the length of the limiting groove (110) is the limit sliding distance of the connecting plate (220) and the supporting plate (230).

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