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CN-117775058-B - Anti-climbing energy-absorbing device for high-speed train

CN117775058BCN 117775058 BCN117775058 BCN 117775058BCN-117775058-B

Abstract

The invention discloses a climbing-prevention energy-absorbing device for a high-speed train, which comprises climbing-prevention teeth, a compression pipe disc, a shearing ring and a fastener, wherein one end of the compression pipe is connected with the climbing-prevention teeth, the other end of the compression pipe is connected with the compression pipe disc and the shearing ring, the fastener is used for realizing connection and fixation of the compression pipe, the compression pipe disc and the shearing ring, and the end part of the compression pipe disc is detachably connected with a train body so as to realize that the climbing-prevention energy-absorbing device is arranged at the front end of the train and is used for climbing prevention energy absorption. The invention has the advantages of compact structure, simple installation, high energy absorption energy density, light weight and the like, plays an important role in improving the running safety of the high-speed train, optimizing the energy absorption capacity of the anti-climbing device and reducing the use cost, and is well suitable for the high-speed motor train unit with small installation space.

Inventors

  • LEI ZHANGWEN
  • HU QUAN
  • ZHOU QUAN
  • TANG TING
  • Deng Nao
  • FANG XIN
  • LI LIN
  • ZENG ZHONGQING
  • WANG DA
  • HUANG ZHIHUA
  • JIANG XIAOLIN
  • SHEN ZHENYU
  • YAO YANYUN
  • HUANG SHEN

Assignees

  • 株洲国创轨道科技有限公司

Dates

Publication Date
20260512
Application Date
20231214

Claims (8)

  1. 1. The anti-creeping energy-absorbing device for the high-speed train is characterized by comprising anti-creeping teeth (100), a compression pipe (200), a compression pipe disc (300), a shear ring (400) and a fastener (500), wherein the compression pipe (200) is of a hollow tubular structure and is made of an aluminum alloy material, the shear ring (400) is a structural member integrally machined by high-strength steel, one end of the compression pipe (200) is connected with the anti-creeping teeth (100), the other end of the compression pipe (200) is connected with the compression pipe disc (300) and the shear ring (400), the fastener (500) is used for realizing connection and fixation of the compression pipe (200), the compression pipe disc (300) and the shear ring (400), and the end part of the compression pipe disc (300) is detachably connected with a train body so as to realize that the anti-creeping energy-absorbing device is arranged at the front end of the train and used for anti-creeping energy absorption.
  2. 2. The anti-creeping energy absorber for a high-speed train according to claim 1, wherein the anti-creeping tooth (100) comprises a tooth (101), a tooth plate (102) and a connecting disc (103), the tooth (101) and the connecting disc (103) are respectively arranged on two side surfaces of the tooth plate (102), the tooth (101) is of a concave-convex structure, when the train collides, the concave-convex tooth (101) is converted into a convex-concave tooth (101), the convex tooth is meshed with the concave tooth, and the connecting disc (103) is used for connecting a compression pipe (200).
  3. 3. The climbing-prevention energy-absorbing device for the high-speed train according to claim 2, wherein one end of the compression pipe (200) is of a flat circular pipe structure and is used for being connected with the connecting disc (103), the other end of the compression pipe (200) is provided with a reducer pipe (201) and a step (202), the reducer pipe (201) is used for being connected with the compression pipe disc (300), first fixing holes (203) are symmetrically formed in the side portions of the step (202), and the first fixing holes (203) are used for installing fasteners (500).
  4. 4. The climbing-prevention and energy-absorption device for a high-speed train according to claim 3, wherein the pipe-shrinkage disc (300) comprises a base (301), a guide hole (302) and a second fixing hole (303), the guide hole (302) is arranged on the side surface of the base (301), the guide hole (302) is of a reducing structure and is used for connecting a reducing pipe (201), the second fixing hole (303) is symmetrically arranged on the side surface of the base (301), and the second fixing hole (303) corresponds to the first fixing hole (203) and is used for installing a fastener (500).
  5. 5. The anti-creeping energy absorber for a high-speed train according to claim 4, wherein the shear ring (400) comprises a third fixing hole (401) and a flange plate (402), the third fixing hole (401) is symmetrically arranged at the side part of the shear ring (400), the third fixing hole (401) corresponds to the second fixing hole (303) and the first fixing hole (203) and is used for installing a fastener (500), and the flange plate (402) is arranged at the end part of the shear ring (400) and is matched with the step (202) and is used for realizing connection of the shear ring (400) with the compression pipe (200).
  6. 6. The anti-creeping energy absorber for a high-speed train according to any one of claims 1 to 5, wherein the anti-creeping tooth (100) and the compression tube (200) are formed in an integral structure by welding.
  7. 7. The anti-creeping energy absorber for a high speed train according to any one of claims 1 to 5, wherein the contraction plate (300) is a high strength steel integrally formed structural member.
  8. 8. The climbing prevention and energy absorption device for a high speed train according to any one of claims 2 to 5, wherein the toothed plate (102) is made of aluminum alloy, and the teeth (101) are concave-convex structures machined on the toothed plate (102).

Description

Anti-climbing energy-absorbing device for high-speed train Technical Field The invention relates to the technical field of rail transit, in particular to a high-performance anti-creeping energy-absorbing device which can effectively prevent the phenomena of creeping and derailing when a high-speed train collides and relates to a technology of cooperative dissipation of train collision energy and track self-holding. Background Along with the rapid development of rail traffic, the running speed of the train is faster and faster, and the highest running speed of the high-speed train reaches 400-600 km/h. Under the high-speed working condition, the high-speed train brings a great deal of casualties and property loss once collision accidents such as rear-end collision occur, active safety protection measures of the train are further enhanced, the occurrence of the collision accidents is reduced, meanwhile, the improvement of the crashworthiness of the rail train is studied from the aspect of passive safety protection, and the safety of drivers and passengers is protected as much as possible, so that the problem of hot spots in the research and development of the current rail train is solved. At present, the high-speed train body in China adopts a weak-strong-weak rigidity distribution method, so that energy absorption is limited at the end part of the train body and is far away from a cab and an occupant area, and safety protection of a driver and an occupant is realized. The end part of the train is provided with the anti-creeper, and the anti-creeper can realize the restriction on the vertical and transverse displacement of the train through the mutual engagement of the anti-creeping teeth when the train collides, thereby effectively preventing the possibility of creeping and derailing when the train collides. Meanwhile, the anti-climbing device needs to have certain energy absorbing capacity, and the anti-climbing and anti-climbing energy absorbing device is generated. The technical principle of the anti-creeping device is as shown in fig. 1 and 2, the anti-creeping device A02 is arranged on a vehicle body A01, and the zigzag anti-creeping teeth face to the front of the vehicle. When collision occurs and car coupler energy absorption is completed, the anti-creepers A02 of the two vehicles collide and the anti-creeping teeth are meshed with each other, the two collided vehicles continuously approach and squeeze the anti-creepers A02, the anti-creepers A02 can retract and absorb energy, and meanwhile, the two vehicles cannot climb until the working stroke of the anti-creepers A02 is consumed or the kinetic energy of the vehicles is consumed and stopped under the action of the anti-creeping teeth and the guide mechanism, so that the anti-creeping energy absorption is realized. Therefore, the anti-climbing device A02 should have an anti-climbing energy absorbing device with high energy density and a guiding and anti-climbing structure. The existing anti-creeping and anti-creeping energy absorbing device mostly adopts a honeycomb structure, and the structure has the advantages of light weight, stable energy absorbing performance and the like through lamination compression energy absorption of thin-wall aluminum honeycomb, but the honeycomb energy absorbing structure cannot continue energy absorption after being compacted, the energy absorbing stroke is relatively small, and the maximum utilization of the installation space cannot be realized. The aluminum honeycomb structure anticreeper is schematically shown in fig. 3, and the laminated aluminum honeycomb B01 is adhered together by the partition plate B02, and the guide rod B03 penetrates through the laminated aluminum honeycomb B01 and is connected with the anticreeper teeth 100. When the collision energy is absorbed, the anti-creeping teeth of the two anti-creeping devices are mutually meshed to prevent the creeping of the creeping, the aluminum honeycomb is crushed by collision force and absorbs collision kinetic energy, and the guide rod prevents the eccentric and unbalanced loading of the crushing process of the aluminum honeycomb, so that the anti-creeping performance is realized. Conventional honeycomb structures are composed of a series of hexagonal cells, each cell having a fixed wall thickness and size. This structural characteristic causes the cells to deform and collapse gradually during compression of the honeycomb structure, and the wall thickness between the cells limits further compression. Meanwhile, the performance of the honeycomb structure anti-creeping energy absorbing device is influenced by the materials. The properties of the material such as modulus of elasticity, yield strength and fracture toughness determine the deformation and energy absorption capacity of the structure during compression. Due to material property limitations, excessive compression may cause structural damage or failure, thereby limiting the compression ratio thereof.