CN220096368U

CN220096368U - Expansion type energy-absorbing anti-climbing device

Info

Publication number: CN220096368U
Application number: CN202321150699.0U
Authority: CN
Inventors: 赵凯; 李林; 沈振宇; 王雅楠; 孙双成; 黄志华; 肖黎亚
Original assignee: Zhuzhou Guochuang Track Technology Co ltd
Current assignee: Zhuzhou Guochuang Track Technology Co ltd
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-11-28
Anticipated expiration: 2033-05-12

Abstract

The utility model discloses an expansion type energy-absorbing anti-climbing device which comprises a mounting seat, an expansion pipe, an impact pipe and an anti-climbing toothed plate, wherein the front end and the rear end of the expansion pipe are respectively provided with an expansion hole section, the anti-climbing toothed plate is connected to the front end of the impact pipe, the rear end of the impact pipe is provided with an impact expansion head inserted into the expansion hole section, the front end of the expansion pipe is mounted on the mounting seat, the whole expansion pipe is positioned on one side of the mounting seat, the rear end of the impact pipe is mounted on the mounting seat, the whole impact pipe is positioned on the other side of the mounting seat, and the expansion type energy-absorbing anti-climbing device further comprises a positioning assembly used for fixedly positioning the impact expansion head in the expansion hole section. The expansion type energy-absorbing anti-climbing device has the advantages of simple and compact structure, good stability, long buffering stroke, capability of reducing viscous effect, energy-absorbing buffering performance, good effect and the like.

Description

Expansion type energy-absorbing anti-climbing device

Technical Field

The utility model relates to the technical field of rail transit equipment, in particular to an expansion type energy-absorbing anti-climbing device.

Background

The anti-creeping device is a mechanical device which is widely applied in the field of rail transit and has the functions of both preventing trains from riding and buffering energy absorption, and kinetic energy is converted into internal energy through elastic plastic deformation and friction of metal, so that the function of energy absorption and anti-creeping is achieved. For protecting the safety of passengers and reducing accident hazard to the greatest extent, the energy absorption and buffering performance of the anti-climbing device of the rail train is important, and the expansion pipe is a main energy absorption structure in the anti-climbing device. When a rail transit train collision accident occurs, the anti-creeper is compressed, the expansion pipe is extruded by the conical pipe, and the diameter of the expansion pipe is plastically expanded to absorb impact energy. The platform force is stable, and the energy absorption rate is high, so that the expansion pipe is widely used as a main energy absorption component.

Along with the improvement of the safety standard of the train, more severe requirements are also put on the energy absorption and compression stroke of the anti-climbing device, and larger energy is required to be absorbed stably in a smaller-size space. However, the existing common expansion pipe type anti-climbing device has the defects of large size, long travel, easy instability and the like, is mostly replaced as a whole after collision accidents occur, has higher maintenance cost, and has complicated installation and needs to use special tools.

The traditional expansion type anticreeper mainly comprises an impact expansion head and an expansion energy absorption pipe, wherein the expansion pipe and the expansion head are generally arranged on one side of a mounting flange seat, and the effective compression rate cannot exceed 50% due to the structural limitation. In addition, when the required impact force is large, viscous effect is easy to occur between the expansion head and the energy absorption tube, so that the reliability is greatly reduced, and some cutting tools are often added to assist in energy absorption, but the complexity of the device is increased, and the reliability is reduced.

Disclosure of Invention

The utility model aims to solve the technical problems of overcoming the defects existing in the prior art and providing the expansion type energy-absorbing anti-climbing device which has the advantages of simple and compact structure, good stability, long buffering stroke, capability of reducing viscous effect, energy-absorbing buffering performance and good effect.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides an inflation formula energy-absorbing anticreeper, includes mount pad, expansion pipe, impact pipe and anticreeper, the both ends of expansion pipe and impact pipe are front end and rear end respectively, the front end tube hole of expansion pipe is equipped with the inflation hole section, anticreeper connect in the front end of impact pipe, the rear end of impact pipe is equipped with and inserts impact expansion head in the inflation hole section, the front end of expansion pipe is installed on the mount pad and the expansion pipe is wholly located one side of mount pad, the rear end of impact pipe is installed on the mount pad and the whole opposite side that is located the mount pad of impact pipe, inflation formula energy-absorbing anticreeper is still including being arranged in the fixed location of impact expansion head in the inflation hole section.

As a further improvement of the above technical scheme:

the locating component comprises a limiting piece which is detachably connected to the mounting seat, one end of the impact expansion head, which is close to the front end of the impact pipe, is provided with a locating surface which surrounds the impact pipe, and the limiting piece is propped against the annular locating surface and is matched with the bottom surface of the expansion hole section to compress and fix the impact expansion head.

The limiting piece is an annular cover plate, the annular cover plate is sleeved outside the impact pipe and is connected with the mounting seat through a fastener, and the positioning surface of the impact expansion head is an annular positioning surface in contact with the surface of the annular cover plate.

The annular locating surface is perpendicular to the axis of the impingement tube.

The annular cover plate is connected with the mounting seat through a plurality of fasteners, and the fasteners are evenly distributed at intervals around the impact tube.

The impact expansion head and one end of the front end of the impact pipe, which is backward, are provided with a sleeving part which is sleeved and matched with the pipe hole of the expansion pipe, and a guide mechanism for guiding the impact expansion head to move along the direction from the front end to the rear end of the expansion pipe is arranged between the sleeving part and the expansion pipe.

The guide mechanism comprises a guide convex strip arranged on the sleeving part and a guide groove arranged on the inner wall of the expansion pipe, and the guide convex strip is positioned in the guide groove and is in guide fit with the guide groove.

The mounting seat is provided with a through mounting hole, one end of the through mounting hole is provided with a step positioning hole, the front end of the expansion pipe is provided with an annular positioning part, and the annular positioning part is accommodated and positioned in the step positioning hole and is pressed and positioned by the limiting piece.

And a flexible pressing pad is arranged between the limiting piece and the annular positioning part.

The mounting seat comprises a front plate part and a sleeve part integrally connected to one side middle position of the front plate part, the through mounting hole is through the front plate part and the sleeve part, the step positioning hole is a secondary step hole, a first stage hole of the secondary step hole is formed in the front plate part, a second stage hole of the secondary step hole is formed in the sleeve part, the radial size of the first stage hole is larger than that of the sleeve part, and the annular positioning part corresponds to each stage step hole of the multistage step hole and is provided with a convex ring part which is positioned in the step hole in a containing mode.

Compared with the prior art, the utility model has the advantages that:

according to the expansion type energy-absorbing anti-climbing device, the expansion pipe and the impact pipe are respectively arranged on two sides of the mounting seat, the structural form of the mounting seat is arranged in the middle, the buffering stroke is longer, the platform force is lower, the viscous effect can be reduced, the platform force value in the whole stroke is stable, energy can be effectively absorbed in the whole stroke range, the effective compression rate is close to 100%, and the energy-absorbing buffering performance and effect are good; meanwhile, after the mounting seat is mounted on a train, the expansion pipe can be located in the inner space of the train, the protruding distance of the expansion type energy-absorbing anti-climbing device at the front end of the train is reduced, and the compactness and stability of the structure are greatly improved.

Drawings

FIG. 1 is a schematic diagram of a main cross-sectional structure of an inflatable energy absorbing anti-creep device.

FIG. 2 is a schematic view of a partially enlarged cross-sectional structure of a junction of an expansion tube and an impact tube.

Fig. 3 is a schematic diagram of a split three-dimensional structure of an expansion type energy-absorbing anti-climbing device.

Legend description:

1. a mounting base; 11. a through mounting hole; 111. step positioning holes; 12. a front plate portion; 13. a sleeve portion; 2. an expansion tube; 20. a guide groove; 21. expanding the hole section; 22. an annular positioning part; 3. an impingement tube; 31. an impact expansion head; 311. an annular positioning surface; 32. a socket joint part; 33. a guide convex strip; 4. anti-creeping toothed plate; 5. an annular cover plate.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the specific examples.

As shown in fig. 1 to 3, the expansion type energy-absorbing anti-creep device of this embodiment comprises a mounting seat 1, an expansion pipe 2, an impact pipe 3 and an anti-creep toothed plate 4, wherein the two ends of the expansion pipe 2 and the impact pipe 3 are respectively a front end and a rear end, the front end pipe hole of the expansion pipe 2 is provided with an expansion hole section 21, the anti-creep toothed plate 4 is connected to the front end of the impact pipe 3, the rear end of the impact pipe 3 is provided with an impact expansion head 31 inserted into the expansion hole section 21, the front end of the expansion pipe 2 is mounted on the mounting seat 1 and the expansion pipe 2 is integrally positioned on one side of the mounting seat 1, the rear end of the impact pipe 3 is mounted on the mounting seat 1 and the impact pipe 3 is integrally positioned on the other side of the mounting seat 1, and the expansion type energy-absorbing anti-creep device further comprises a positioning component for fixedly positioning the impact expansion head 31 in the expansion hole section 21. According to the expansion type energy-absorbing anti-creep device, an expansion pipe 2 and an impact pipe 3 are respectively arranged at two sides of an installation seat 1, the installation seat 1 has a centrally arranged structural form, the buffering stroke is longer, the platform force is lower, the viscous effect can be reduced, the platform force value in the whole stroke is stable, energy can be effectively absorbed in the whole stroke range, the effective compression rate is close to 100%, and the energy-absorbing buffering performance and effect are good; meanwhile, after the installation seat 1 is installed on a train, the expansion pipe 2 can be located in the inner space of the train, the protruding distance of the expansion type energy-absorbing anti-climbing device at the front end of the train is reduced, and the compactness and stability of the structure are greatly improved.

In this embodiment, the positioning assembly includes a limiting member detachably connected to the mounting base 1, and one end of the impact expansion head 31 near the front end of the impact tube 3 has a positioning surface surrounding the impact tube 3, and the limiting member abuts against the annular positioning surface 311 and is matched with the bottom surface of the expansion hole section 21 to compress and fix the impact expansion head 31, so as to fix and position the impact expansion head 31 in the expansion hole section 21. The positioning assembly has the advantages of simple and compact structure, low cost and stable and reliable positioning.

In this embodiment, the limiting member is an annular cover plate 5, the annular cover plate 5 is sleeved outside the impact tube 3 and connected with the mounting seat 1 through a fastener, and the positioning surface of the impact expansion head 31 is an annular positioning surface 311 in surface contact with the annular cover plate 5. The annular locating surface 311 is in surface contact with the annular cover plate 5, so that the impact expansion head 31 is good in compression effect and high in stability.

In this embodiment, the annular positioning surface 311 is perpendicular to the axis of the impact tube 3, so as to ensure that the expansion tube 2 and the impact tube 3 are coaxial, prevent axial unbalanced load, ensure that the expansion tube 2 deforms stably during collision, and improve energy absorption and buffering performance and effect.

In this embodiment, the annular cover plate 5 is connected to the mounting base 1 by a plurality of fasteners which are evenly spaced around the impingement tube 3. The annular cover plate 5 is uniformly stressed, the connection stability is good, and the compression effect on the impact expansion head 31 is good.

In this embodiment, one end of the impact expansion head 31, which is opposite to the front end of the impact tube 3, is provided with a sleeve joint part 32 which is in sleeve joint fit with the tube hole of the expansion tube 2, and a guiding mechanism for guiding the impact expansion head 31 to move along the direction from the front end to the rear end of the expansion tube 2 is arranged between the sleeve joint part 32 and the expansion tube 2. The socket joint portion 32 is in socket joint fit with the hole of the expansion pipe 2, guides the impact expansion head 31 to move towards the rear end of the expansion pipe 2, plays a role in preventing deflection, prevents the angle of the anti-creeping toothed plate 4 from deflecting before collision, leads to the fact that the anti-creeping toothed plate 4 cannot be meshed, and can ensure the anti-creeping effect.

In this embodiment, the guiding mechanism includes a guiding protrusion 33 provided on the sleeve joint portion 32 and a guiding groove 20 provided on the inner wall of the expansion pipe 2, and the guiding protrusion 33 is located in the guiding groove 20 and is in guiding fit with the guiding groove 20. The guide mechanism has simple and compact structure and stable and reliable guide.

In this embodiment, the mounting base 1 has a through mounting hole 11, one end of the through mounting hole 11 is provided with a step positioning hole 111, the front end of the expansion pipe 2 is provided with an annular positioning portion 22, and the annular positioning portion 22 is accommodated and positioned in the step positioning hole 111 and is pressed and positioned by a limiting member. The assembly structure adopts a limiting piece to fix the impact expansion head 31 and the annular positioning part 22 at the same time, has simple and compact structure, low cost and simple and convenient assembly and maintenance, and the impact expansion head 31 and the annular positioning part 22 are positioned in the through mounting hole 11 of the mounting seat 1, the mounting seat 1 plays a role in supporting points, the stability of the structure can be improved, the guiding and unbalanced load resisting effects are simultaneously realized, and the occurrence probability of buckling instability of the expansion pipe 2 can be reduced.

In this embodiment, preferably, a flexible pressing pad is disposed between the limiting member and the annular positioning portion 22, so as to ensure that the annular positioning portion 22 can be pressed and fixed simultaneously while the impact expansion head 31 is pressed and fixed, thereby achieving the purpose of reducing the manufacturing precision and the assembly difficulty.

In this embodiment, the mounting base 1 includes a front plate portion 12 and a sleeve portion 13 integrally connected to one side of the front plate portion 12 at a middle position, the through mounting hole 11 is formed through the front plate portion 12 and the sleeve portion 13, the step positioning hole 111 is a two-stage step hole, a first-stage hole of the two-stage step hole is formed in the front plate portion 12, a second-stage hole of the two-stage step hole is formed in the sleeve portion 13, a radial dimension of the first-stage hole is larger than a radial dimension of the sleeve portion 13, and the annular positioning portion 22 is provided with a convex ring portion corresponding to each stage step hole of the multi-stage step hole and positioned in the step hole. The mounting seat 1 formed by the front plate part 12 and the sleeve part 13 can be just matched and mounted on a mounting part with a preset hole with a standard size on a train, the sleeve part 13 is inserted into the preset hole, the front plate part 12 abuts against the surface of the mounting part and is fastened by bolts, and the mounting seat 1 can be ensured to be mounted stably and reliably. Since the predetermined hole is standardized and its size is also constant, the wall thickness of the sleeve portion 13 is limited, and the thickness of the front plate portion 12 is also limited in consideration of the compactness and cost. In this case, if only one step hole is provided, it is to be ensured that the radial contact surface between the convex ring portion and the step hole is large, and the radial dimension of the step hole is also required to be large, at this time, the step hole must be provided on the front plate portion 12, and the thickness of the front plate portion 12 is limited, which results in limiting the depth of the step hole, resulting in insufficient axial thickness of the convex ring portion of the annular positioning portion 22, poor structural strength, and insufficient axial impact resistance; if the axial thickness of the convex ring portion of the annular positioning portion 22 is increased, the stepped hole can only extend to the sleeve portion 13, and the wall thickness of the sleeve portion 13 is limited, which results in the limitation of the radial dimension of the stepped hole, that is, the radial dimension of the convex ring portion is limited, the structural strength is poor, the radial contact surface between the convex ring portion and the stepped hole is small, and the axial impact resistance can not meet the requirement. The embodiment adopts the second-stage stepped hole, the first-stage hole of the second-stage stepped hole is arranged on the front plate part 12, the second-stage hole of the second-stage stepped hole is arranged in the sleeve part 13, and the radial dimension of the first-stage hole is larger than that of the sleeve part 13, so that the whole radial dimension and the axial dimension of the annular positioning part 22 are both increased, the contact surface of the annular positioning part 22 and the mounting seat 1 for resisting axial force is also increased, the axial shock resistance can be integrally improved, and the axial shock resistance device has the advantages of more stable mechanical structure, more reliable work and more accurate positioning.

When the expansion type energy-absorbing anti-creeping device of the embodiment is used, the mounting seat 1 is mounted at the front end of a train, when two trains collide, the anti-creeping toothed plates 4 of the two trains are contacted with each other first to prevent the creeping condition, the impact force borne by the anti-creeping toothed plates 4 enables the impact tube 3 to axially move under pressure, the impact expansion head 31 of the impact tube 3 is restrained by the tube hole of the expansion tube 2, the impact expansion head 31 can force the expansion tube 2 to outwardly expand and plastically deform, and meanwhile, the plastic deformation force and the friction force are transmitted and heat is generated, so that the impact energy is converted into the elastoplastic deformation energy and the heat energy of the expansion tube 2 to consume energy to reduce the running speed of the train and reduce collision damage. Because the impact tube 3 moves along the inner wall of the tube hole of the expansion tube 2 after being extruded, the impact tube plays a role in guiding, can ensure that the generated plastic deformation is stable, orderly and controllable, and the shown effect can ensure that the impact force is stable and balanced, so that the strong peak value of the impact force which is not beneficial to protecting passengers and cargoes does not appear.

In this embodiment, the expansion pipe 2 is made of a thin-walled metal material with relatively soft (relatively small strength) and certain plastic fluidity, and the mounting seat 1, the impact pipe 3 and the anti-creeping toothed plate 4 are made of a relatively hard (relatively large strength) metal material. In the collision process, only the expansion pipe 2 with smaller strength can be subjected to plastic deformation, and other parts can be reused, so that the expansion pipe 2 can be replaced by a new expansion pipe after collision deformation, the reuse rate of structural materials can be greatly improved, and the cost is saved.

In this embodiment, the end of the impact expansion head 31 of the impact tube 3 far away from the front end of the impact tube 3 is provided with a conical surface, and the bottom surface of the expansion hole section 21 of the expansion tube 2 is a conical surface in surface contact fit with the conical surface of the impact expansion head 31, so that the impact expansion head 31 is beneficial to stably and reliably forcing the expansion tube 2 to expand and deform.

The above description is merely a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the above examples. Modifications and variations which would be obvious to those skilled in the art without departing from the spirit of the utility model are also considered to be within the scope of the utility model.

Claims

1. The utility model provides an inflation formula energy-absorbing anticreeper, includes mount pad (1), expansion pipe (2), strikees pipe (3) and prevents climbing pinion rack (4), the both ends of expansion pipe (2) and strikee pipe (3) are front end and rear end respectively, the front end tube hole of expansion pipe (2) is equipped with expansion hole section (21), prevent climbing pinion rack (4) connect in the front end of strikee pipe (3), the rear end of strikee pipe (3) is equipped with and inserts impact expansion head (31) in expansion hole section (21), its characterized in that: the front end of expansion pipe (2) is installed on mount pad (1) and expansion pipe (2) wholly is located one side of mount pad (1), the rear end of impact pipe (3) is installed on mount pad (1) and impact pipe (3) wholly is located the opposite side of mount pad (1), expansion type energy-absorbing anticreeper still includes the locating component that is arranged in with impact expansion head (31) fixed location in expanding hole section (21).

2. The expansion energy absorbing anticreeper of claim 1, characterized in that: the positioning assembly comprises a limiting piece which is detachably connected to the mounting seat (1), one end of the impact expansion head (31) close to the front end of the impact tube (3) is provided with a positioning surface surrounding the impact tube (3), and the limiting piece is propped against the annular positioning surface (311) and is matched with the bottom surface of the expansion hole section (21) to compress and fix the impact expansion head (31).

3. The expansion energy absorbing anticreeper of claim 2, characterized in that: the limiting piece is an annular cover plate (5), the annular cover plate (5) is sleeved outside the impact pipe (3) and is connected with the mounting seat (1) through a fastener, and the positioning surface of the impact expansion head (31) is an annular positioning surface (311) in surface contact with the annular cover plate (5).

4. The expansion energy absorbing anticreeper of claim 3, characterized in that: the annular locating surface (311) is perpendicular to the axis of the impingement tube (3).

5. The expansion energy absorbing anticreeper of claim 3, characterized in that: the annular cover plate (5) is connected with the mounting seat (1) through a plurality of fasteners which are uniformly distributed at intervals around the impact tube (3).

6. The expansion energy absorbing anticreeper of claim 1, characterized in that: one end of the impact expansion head (31) opposite to the front end of the impact tube (3) is provided with a sleeving part (32) which is sleeved and matched with the tube hole of the expansion tube (2), and a guide mechanism for guiding the impact expansion head (31) to move along the direction from the front end to the rear end of the expansion tube (2) is arranged between the sleeving part (32) and the expansion tube (2).

7. The expansion energy absorbing anticreeper of claim 6, characterized in that: the guiding mechanism comprises a guiding raised strip (33) arranged on the sleeving part (32) and a guiding groove (20) arranged on the inner wall of the expansion pipe (2), and the guiding raised strip (33) is positioned in the guiding groove (20) and is in guiding fit with the guiding groove (20).

8. The expansion energy absorbing anticreeper of any one of claims 2 to 5, characterized in that: the mounting seat (1) is provided with a through mounting hole (11), one end of the through mounting hole (11) is provided with a step positioning hole (111), the front end of the expansion pipe (2) is provided with an annular positioning part (22), and the annular positioning part (22) is accommodated and positioned in the step positioning hole (111) and is pressed and positioned by the limiting piece.

9. The expansion energy absorbing anticreeper of claim 8, characterized in that: a flexible pressing pad is arranged between the limiting piece and the annular positioning part (22).

10. The expansion energy absorbing anticreeper of claim 8, characterized in that: the mounting seat (1) comprises a front plate part (12) and a sleeve part (13) integrally connected to one side middle position of the front plate part (12), the through mounting hole (11) is communicated with the front plate part (12) and the sleeve part (13), the step positioning hole (111) is a secondary step hole, a first-stage hole of the secondary step hole is formed in the front plate part (12), a second-stage hole of the secondary step hole is formed in the sleeve part (13), the radial size of the first-stage hole is larger than that of the sleeve part (13), and the annular positioning part (22) corresponds to each-stage step hole of the secondary step hole and is provided with a convex ring part which is positioned in the step hole in a containing mode.