CN-122008969-A - Modular contact rail end elbow

CN122008969ACN 122008969 ACN122008969 ACN 122008969ACN-122008969-A

Abstract

The utility model provides a modularization contact rail tip elbow, including first elbow body, insulating slide and second elbow body, first elbow body has straight section and first section of buckling, the second elbow body has second section of buckling and third section of buckling, insulating slide locates between first, second elbow body, and with first, second section fixed connection of buckling, make tip elbow online during operation first elbow body electrified, second elbow body is electroless, and first section of buckling, insulating slide, the working face of second section of buckling smoothly links up, pass through the striking board smooth linking between first elbow body and the working face of insulating slide, the striking board includes changeover portion and draws the arc section, the changeover portion is fixed in on the concave station of first section tip of buckling, the striking section is embedded in the recess of insulating slide working face one end. According to the invention, the current path of the transition slope section is physically cut off through the insulating slide way, and the arc striking plate protects the insulating slide way from ablation, so that the problem of ablation of the transition slope section is effectively solved.

Inventors

ZHANG BEI
QIANG LI
PEI WEN
YUE SHUANGPING
GUAN XIAOLEI
WEI YING
YANG SHUHENG
XU YANG
DENG XIANGLONG
LIN JIAN
TIAN LE
YANG MINFEI
LU TAO

Assignees

中铁高铁电气装备股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (8)

1. The modularized contact rail end elbow is characterized by comprising a first elbow body (1), an insulating slideway (2) and a second elbow body (3), wherein the first elbow body (1) is provided with a straight section (1-1) and a first bending section (1-2), and the second elbow body (3) is provided with a second bending section (3-1) and a third bending section (3-2); The insulation slide way (2) is arranged between the first elbow body (1) and the second elbow body (3) and is fixedly connected with the first bending section (1-2) and the second bending section (3-1), so that when an end elbow works on line, the first elbow body (1) is electrified, the second elbow body (3) is not electrified, and working surfaces of the first bending section (1-2), the insulation slide way (2) and the second bending section (3-1) are connected smoothly; The arc striking plate (4) is smoothly connected between the working surfaces of the first elbow body (1) and the insulating slideway (2) through the arc striking plate (4), the arc striking plate (4) comprises a transition section (4-1) and an arc striking section (4-2), the transition section (4-1) is fixed on a concave table (1-3) at the end part of the first bending section (1-2), and the arc striking section (4-2) is embedded into a groove (2-1) at one end of the working surface of the insulating slideway (2).
2. The end elbow according to claim 1, wherein the working surface of the arc striking section (4-2) comprises a flat surface (4-2-1) connected with the transition section (4-1) and a slope surface (4-2-2) gradually inclining downwards, the back surface of the arc striking section (4-2) is provided with a through groove (4-2-3) along the width direction, the end part of the insulating slideway (2) connected with the arc striking plate (4) is provided with an inclined surface (2-2) inclining downwards, and the inclined surfaces (2-2) are distributed on two sides of the flat surface (4-2-1).
3. The end elbow according to claim 2, wherein the insulating slideway (2) is composed of two symmetrically arranged sliding rails with the same structure, two ends of the sliding rails are respectively fixedly connected with the first bending section (1-2) and the second bending section (3-1), and one ends of the working surfaces of the two sliding rails are symmetrically provided with sinking tables forming the groove (2-1).
4. The end elbow of claim 3, wherein the first elbow body (1) and the second elbow body (3) are formed by processing I-shaped contact rails, trapezoidal connecting parts (2-3) are respectively arranged at two ends of the sliding rail, the trapezoidal connecting parts (2-3) are respectively clamped into cavities at two sides of rail waists of the corresponding first elbow body (1) and the corresponding second elbow body (3), and the trapezoidal connecting parts are respectively and tightly connected with the first elbow body (1) and the second elbow body (3) through bolt pairs (5).
5. An end bend according to claim 1, 2 or 3, characterized in that the recess (2-1) is a wedge-shaped structure and the arc-guiding segment (4-2) is a wedge-shaped plate adapted to the wedge-shaped structure.
6. An end bend according to claim 1 or 2, characterized in that the back of the transition section (4-1) is provided with a threaded blind hole (4-1-1) diagonally, and the transition section (4-1) is fastened to the recess (1-3) by screwing a screw (6) through the first bend body (1) and the trapezoidal connecting portion (2-3) and then into the threaded blind hole (4-1-1).
7. The end bend according to claim 1, characterized in that the striking plate (3) is made of stainless steel plate.
8. An end bend according to claim 1, characterized in that the insulating runner (2) is made of a high-strength insulating material.

Description

Modular contact rail end elbow Technical Field The invention relates to the technical field of urban rail transit, in particular to a modularized contact rail end elbow. Background The contact rail end elbow is a key current-collecting component in an urban rail transit traction power supply system, and has the core function of guiding the current collecting shoe to realize smooth transition among different contact rail sections, and the running state of the contact rail end elbow is directly related to the current-collecting quality and the running safety of a train. Particularly in the complicated circuit areas such as a foldback line, a crossover line, a storage line and the like, the end elbow of the train continuously bears high-frequency mechanical impact and electrical circulation due to frequent circuit switching, and the problem of ablation of the working surface of the end elbow is outstanding, so that the end elbow becomes a main factor influencing the durability of the component. Ablation occurs primarily near the working surface transition ramp section, and particularly the first suspension point bracket at the end bend tip. Aiming at the problems, the erosion resistance of the contact rail end elbow needs to be improved, and the maintenance convenience of the contact rail end elbow is optimized so as to ensure the efficient and stable operation of a traction power supply system. Disclosure of Invention The invention provides a modularized contact rail end elbow, which overcomes the defects of the prior art. The technical scheme adopted by the invention is that the modularized contact rail end elbow comprises a first elbow body, an insulating slideway and a second elbow body, wherein the first elbow body is provided with a straight section and a first bending section, and the second elbow body is provided with a second bending section and a third bending section; the insulation slideway is arranged between the first elbow body and the second elbow body and is fixedly connected with the first bending section and the second bending section, so that when the end elbow works on line, the first elbow body is electrified, the second elbow body is unpowered, and the working surfaces of the first bending section, the insulation slideway and the second bending section are mutually and smoothly connected; The arc striking plate comprises a transition section and an arc striking section, wherein the transition section is fixed on a concave table at the end part of the first bending section, and the arc striking section is embedded into a groove at one end of the working surface of the insulating slide. The working surface of the arc striking section comprises a straight surface connected with the transition section and a slope surface gradually inclining downwards, the back surface of the arc striking section is provided with a through groove along the width direction, the end part of the insulation slideway connected with the arc striking plate is provided with an inclined surface inclining downwards, and the inclined surfaces are distributed on two sides of the straight surface. The insulation slide comprises two slide rails which are identical in structure and symmetrically arranged, two ends of each slide rail are fixedly connected with the first bending section and the second bending section respectively, and one end of the working face of each slide rail is symmetrically provided with a sinking table for forming the groove. The first elbow body and the second elbow body are formed by processing I-shaped contact rails, trapezoidal connecting portions are respectively arranged at two ends of the sliding rail, the trapezoidal connecting portions are respectively clamped into cavities at two sides of the rail web of the corresponding first elbow body and the corresponding second elbow body, and the trapezoidal connecting portions are respectively and fixedly connected with the first elbow body and the corresponding second elbow body through bolt pairs. The groove is of a wedge-shaped structure, and the arc striking section is a wedge-shaped plate matched with the wedge-shaped structure. The opposite angles of the back of the transition section are provided with threaded blind holes, and the transition section is fixed on the concave table through threaded connection with the threaded blind holes after the screws pass through the first elbow body and the trapezoid connecting part. The arc striking plate is made of stainless steel plates. The insulating slideway is made of high-strength insulating materials. Compared with the prior art, the invention has the following beneficial effects: 1. According to the invention, the transition slope section (the second elbow body) which is most severely ablated is completely electrically isolated by arranging the insulating slideway, so that a current path of the transition slope section is cut off from a physical structure, and the ablation problem of the transitio