CN-122009263-A - Compact center traction device and installation method thereof

CN122009263ACN 122009263 ACN122009263 ACN 122009263ACN-122009263-A

Abstract

According to the compact type central traction device, the two traction pull rods are transversely aligned and distributed on two sides of the traction pin seat to form the central traction device which is in rectangular arrangement, the shape of the installation space corresponding to the central traction device is adapted, the longitudinal length of the central traction device is shortened, the compactness of the structure is improved, and the arrangement requirement of the compact type space is met; the two traction pull rods are aligned transversely, the length of the traction pull rods is increased, the deflection and torsion angles of the pull rod spherical hinge when the vehicle body and the bogie are displaced transversely and vertically are reduced, the fatigue life of the pull rod spherical hinge is prolonged, the transverse stop is arranged in the space between the two traction pull rods, the outer space is not occupied, the center pin structure can be effectively reduced, the vertical size of the center traction device is reduced, the structural compactness is improved, the transverse stop with different transverse heights can be installed according to the transverse limiting requirements of the vehicle body and the bogie under different load working conditions, and the reliability of transverse limiting is improved.

Inventors

GAO FAXIONG
HUANG HANMIN
LUO YAN
ZOU MINJIA
NI SHIFENG
ZHANG WEIHENG
ZHAO BIN
LIU WENSONG
LIANG JINMING
CHEN QUAN

Assignees

株洲时代新材料科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260317

Claims (10)

1. The compact central traction device comprises a traction pin seat, a central traction spherical hinge which is pressed at the center of the traction pin seat and is connected with a vehicle body, and two traction pull rods which are arranged longitudinally, wherein the two ends of each traction pull rod are provided with the traction spherical hinge in a pressure equalizing mode, the traction spherical hinge at one end of each traction pull rod is connected with the traction pin seat, and the traction spherical hinge at the other end of each traction pull rod is connected with a bogie.
2. The compact center traction device of claim 1, wherein the traction pin seat is provided with two double-layer connecting arms which extend towards the end part of the traction rod and are parallel to the traction rod, the number of the double-layer connecting arms is two and are distributed on two sides of the traction pin seat, the extending directions of the two double-layer connecting arms are opposite, and the free ends of the two double-layer connecting arms are respectively connected with the spherical hinge of the traction rod.
3. The compact center traction device according to claim 2, wherein the double-layer connecting arm is integrally formed with connecting threaded sleeves corresponding to the upper end and the lower end of the pull rod spherical hinge.
4. The compact center traction device according to claim 2, wherein the transverse stop is fixed to the double-layered connecting arm and is located between two transversely aligned tie rod ball joints.
5. The device of claim 2, wherein the tie rod ball joints at one end of the tie rod are secured to a mounting seat on the bogie, the mounting seat extending between two transversely aligned tie rod ball joints and being transversely aligned with the transverse stop.
6. The compact center traction device according to claim 5, wherein the number of lateral stops is two, and two of said lateral stops are oppositely disposed, each lateral stop being laterally aligned with a respective one of the mounting seats.
7. The device of claim 5, wherein the transverse stop is formed by alternately laminating and vulcanizing a metal layer and a rubber layer, and a wear plate opposite to the mounting seat is fixed on a free end surface of the transverse stop.
8. The compact center traction device according to claim 1, wherein an annular positioning groove is formed in a center hole of the traction pin base, the center traction spherical hinge is pressed into the center hole of the traction pin base, and the split retainer ring is assembled in the annular positioning groove and abuts against the upper end face of the center traction spherical hinge.
9. The compact center traction device according to claim 2, wherein the traction rod consists of a pull rod body with a rectangular cross section and press-fit sleeves integrally formed at two ends of the pull rod body, the pull rod spherical hinge is press-fitted in the press-fit sleeves, the outer side surface of the pull rod body is tangent to the outer wall of the press-fit sleeves, and the inner side surface of the pull rod body is positioned at the outer lateral side of the double-layer connecting arm.
10. The method for installing a compact center traction device according to any one of claims 1 to 9, wherein the length of the traction rods is designed according to the length of the installation space, the distance between the two traction rods is designed according to the width of the installation space, the transverse height of the transverse stop is designed according to the transverse limit requirement between the vehicle body and the bogie, then the rod spherical hinge is pressed on the end part of the traction rods, the transverse stop is installed on the traction pin seat, the rod spherical hinge at one end of the traction rods is connected with the traction pin seat to assemble the compact center traction device, and then the compact center traction device is placed in the installation space between the vehicle body and the bogie to connect the rod spherical hinge at the other end of the traction rods with the bogie.

Description

Compact center traction device and installation method thereof Technical Field The invention relates to a compact type central traction device and an installation method thereof, and belongs to the technical field of traction devices of railway vehicles. Background The central traction device is arranged between the railway vehicle body and the bogie and is used for connecting the vehicle body and the bogie, transmitting traction force and braking force and buffering impact and vibration caused by wheels. The central traction device comprises a traction pin seat, a central traction spherical hinge and a traction pull rod, wherein the central traction spherical hinge and the traction pull rod are pressed in the traction pin seat, the pull rod spherical hinge is pressed at two ends of the traction pull rod, and a central pin is assembled in the central traction spherical hinge. The pull rod spherical hinge at one end of the traction pull rod is connected with the traction pin seat, the pull rod spherical hinge at the other end of the traction pull rod is connected with the bogie, the center pin is connected with the vehicle body, and the traction pull rod is reversely arranged at the left side and the right side of the traction pin seat to form a Z-shaped center traction device, as shown in fig. 6. The upper end of the center pin is provided with a transverse stop, and the transverse displacement between the bogie and the vehicle body is limited by the contact of the transverse stop and the bogie. The present central traction device also has the following drawbacks: 1. The central traction device is arranged at the middle position of the bogie frame, the installation space is generally a rectangular frame, the outer contour size of the central traction device is required, meanwhile, the running space of the central traction device is also considered, the whole length of the central traction device is large, the arrangement space is not easy to form interference of the central traction device in the deformation process, so that the central traction device has high requirement on the arrangement space, the space occupation rate is large, and the arrangement requirement of compact space is difficult to meet. 2. The upper end of the center pin is provided with a traction body, the traction body is connected with a vehicle body, and the traction body is connected with a transverse stop, so that the upper end of the center pin is large in structure, the vertical size of the center traction device is increased, and the occupation rate of the volume space of the center traction device is further increased. 3. The traction rod is connected with the traction pin seat and the bogie, so as to adapt to the arrangement of the installation space, the length of the traction rod is shorter, and when the vehicle body and the bogie are transversely and vertically displaced, the spherical hinge of the traction rod generates larger deflection and larger torsion angle, and the fatigue life of the spherical hinge of the traction rod is shortened. 4. The traction pull rod assembly is connected through the threaded holes of the traction pin seats through bolts, the threaded holes of the traction pin seats bear large loads in the traction and braking operation process, and the risk that the threaded holes of the traction pin seats are scrapped due to the fact that deformation cannot be repaired caused by repeated tightness of the bolts exists. Disclosure of Invention The compact type central traction device provided by the invention shortens the longitudinal length of the central traction device, improves the compactness of the structure, reduces the requirement of the central traction device on the arrangement space so as to meet the arrangement requirement of the compact space, increases the length of the traction pull rod, reduces the deflection and torsion angles of the pull rod spherical hinge when the vehicle body and the bogie are transversely and vertically displaced, prolongs the fatigue life of the pull rod spherical hinge, utilizes the space between the two traction pull rods to arrange transverse stop blocks, improves the structural compactness, and can install the transverse stop blocks with different transverse heights according to the transverse limit requirements of the vehicle body and the bogie under different load working conditions, thereby improving the reliability of transverse limit. The invention also provides a method for installing the compact center traction device. In order to achieve the above purpose, the invention adopts the following technical scheme: The compact central traction device comprises a traction pin seat, a central traction spherical hinge which is pressed at the center of the traction pin seat and is connected with a vehicle body, and two traction pull rods which are arranged longitudinally, wherein the two ends of each traction pull rod are provided with the traction spherical hinge in a p