CN219154294U

CN219154294U - C-shaped contact rail intermediate joint

Info

Publication number: CN219154294U
Application number: CN202320342304.0U
Authority: CN
Inventors: 刘娟; 丁俊勇; 杨敏飞; 杜宝峰; 凤悦汝; 裴文; 吴倩
Original assignee: China Railway High Speed Electrification Equipment Corp Ltd
Current assignee: China Railway High Speed Electrification Equipment Corp Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-09
Anticipated expiration: 2033-02-28

Abstract

A C-shaped contact rail middle joint comprises an inner clamping plate (1), an outer clamping plate (2) and a connecting bolt (3); the section of the inner clamping plate (1) is of a T shape which is anastomotic with the inner cavity of the C-shaped contact rail (4), the inner clamping plate (1) is embedded into the inner cavities at the two sides of the joint of the adjacent C-shaped contact rail (4), the outer clamping plate (2) is arranged at one side of the rail bottom of the C-shaped contact rail (4) and penetrates through the outer clamping plate (2) through the connecting bolt (3) to be connected with the inner clamping plate (1), and the adjacent C-shaped contact rails (4) are connected and fixed together. According to the utility model, the convex edges are arranged on the joint surface of the outer clamping plate or the inner clamping plate, so that the middle joint and the contact rail form line contact, and the electric virtual joint phenomenon caused by uneven contact of the joint surface is overcome.

Description

C-shaped contact rail intermediate joint

Technical Field

The utility model relates to the technical field of rail transit contact rail power supply systems, in particular to a C-shaped contact rail intermediate joint.

Background

With the development of urban rail transit, rail transit modes such as magnetic levitation, straddle type monorail and air trains are gradually popularized, and the contact rail is widely used as a main type power supply system. The C-shaped contact rail is widely used under small limiting working conditions due to the structural characteristics. At present, the C-shaped contact rail intermediate joint mainly adopts an inner clamping plate and an outer clamping plate, and is clamped with the contact rail through bolt fastening, so that the purpose of fixing adjacent contact rails is realized.

The most recent prior art to this application is: the middle joint (CN 209395627U) of the straddling type steel-aluminum composite contact rail for the single rail comprises a middle joint body connected with the bottom of the composite contact rail and an integral inner clamping plate embedded in the composite contact rail, wherein the middle joint body and the integral inner clamping plate are connected through an integral inner clamping plate fastener. Because the whole inner clamping plate, the middle joint body and the composite contact rail are in surface contact, the electric virtual connection phenomenon caused by uneven contact surface exists.

Disclosure of Invention

The utility model provides a C-shaped contact rail intermediate joint which overcomes the defects in the prior art.

The technical scheme adopted by the utility model is as follows: a C-shaped contact rail middle joint comprises an inner clamping plate, an outer clamping plate and a connecting bolt; the section of the inner clamping plate is of a T shape which is anastomotic with the inner cavity of the C-shaped contact rail, the inner clamping plate is embedded into the inner cavities at two sides of the joint of the adjacent C-shaped contact rail, the outer clamping plate is arranged at one side of the rail bottom of the C-shaped contact rail, and the outer clamping plate is connected with the inner clamping plate by penetrating through the outer clamping plate through a connecting bolt, so that the adjacent C-shaped contact rails are connected and fixed together.

The connecting bolt is characterized in that a threaded hole is formed in the inner clamping plate, a through hole corresponding to the threaded hole is formed in the outer clamping plate, a first convex edge is arranged on the joint surface of the outer clamping plate and the rail bottom of the C-shaped contact rail along the line direction, a through hole corresponding to the through hole is formed in the rail bottom of the C-shaped contact rail, and the connecting bolt sequentially penetrates through the through hole and then is connected with the threaded hole.

The connecting bolt is connected with the threaded hole after passing through the through hole.

The C-shaped contact rail inner cavity is provided with a groove at the position corresponding to the second convex edge, and the second convex edge is clamped in the groove.

The outer end of the through hole is coaxially provided with an annular concave table, and the bolt head of the connecting bolt is sunk into the annular concave table.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the convex edges are arranged on the joint surface of the outer clamping plate or the inner clamping plate, so that the middle joint and the contact rail form line contact, and the electric virtual joint phenomenon caused by uneven contact of the joint surface is overcome.

2. According to the utility model, the convex ribs are arranged on the joint surface of the lower end of the inner clamping plate and the inner cavity of the contact rail along the line direction, the groove is arranged on the joint surface of the inner cavity of the contact rail, and the convex ribs are clamped in the groove, so that the automatic alignment of the inner clamping plate is realized, and the installation efficiency is improved.

3. According to the utility model, the annular concave table is arranged on the outer clamping plate, and the bolt head of the connecting bolt is sunk into the annular concave table, so that the use requirement of smaller limit is met.

Drawings

FIG. 1 is a schematic view of the structure of embodiment 1 of the present utility model;

FIG. 2 is a schematic structural view of embodiment 2 of the present utility model;

FIG. 3 is a schematic cross-sectional view of embodiment 1 of the present utility model;

fig. 4 is a schematic cross-sectional structure of embodiment 2 of the present utility model.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

Example 1, see FIGS. 1, 3.

A C-shaped contact rail middle joint comprises an inner clamping plate 1, an outer clamping plate 2 and a connecting bolt 3; the section of the inner clamping plate 1 is of a T shape which is anastomotic with the inner cavity of the C-shaped contact rail 4, the inner clamping plate 1 is embedded into the inner cavities at the two sides of the joint of the adjacent C-shaped contact rail 4, the outer clamping plate 2 is arranged at one side of the rail bottom of the C-shaped contact rail 4, and is connected with the inner clamping plate 1 by penetrating the outer clamping plate 2 through the connecting bolt 3, and the adjacent C-shaped contact rails 4 are connected and fixed together.

The connecting bolt 3 sequentially passes through the through holes 2-1 and the through holes 4-1 and then is connected with the threaded holes 1-1, and the connecting bolt 2 is provided with the threaded holes 1-1, wherein the threaded holes 1-1 are formed in the inner clamping plate 1, the through holes 2-1 corresponding to the threaded holes 1-1 are formed in the outer clamping plate 2, the first convex edges 2-2 are formed in the joint surface of the outer clamping plate 2 and the rail bottom of the C-shaped contact rail 4 along the line direction, the through holes 4-1 corresponding to the through holes 2-1 are formed in the rail bottom of the C-shaped contact rail 4.

Preferably, the through holes 2-1, the through holes 4-1 and the threaded holes 1-1 are arranged in two rows along the line direction, the first ribs 2-2 are respectively arranged on two sides of each row of through holes 2-1, and the first ribs 2-2 enable the outer clamping plate 2 to form line contact with the joint surface of the rail bottom of the C-shaped contact rail 4, so that the electric virtual connection phenomenon caused by uneven contact failure of the joint surface is overcome.

Further, in order to effectively prevent the loosening of the connecting bolt 3. The connecting bolt 3 is sleeved with a lock washer 5, and the lock washer 5 is preferably a double-stacked lock washer or a butterfly washer.

Further, an annular concave table 2-3 is coaxially arranged at the outer end of the through hole 2-1, and the bolt head of the connecting bolt 3 is sunk into the annular concave table 2-3. To meet the use requirements of smaller restrictions.

Example 2, see fig. 2, 4.

The connecting bolt 3 passes through the through hole 2-1 and then is connected with the threaded hole 1-1, a threaded hole 1-1 is arranged on the inner clamping plate 1, a through hole 2-1 corresponding to the threaded hole 1-1 is arranged on the outer clamping plate 2, a second convex rib 1-2 is arranged on the joint surface of the lower end of the inner clamping plate 1 and the inner cavity of the C-shaped contact rail 4 along the line direction, and the connecting bolt 3 passes through the through hole 2-1.

The inner cavity of the C-shaped contact rail 4 is provided with a groove 4-2 at a position corresponding to the second convex edge 1-2, and the second convex edge 1-2 is clamped in the groove 4-2. The inner clamping plate 1 and the C-shaped contact rail 4 are automatically aligned, and the installation efficiency is improved.

Preferably, the through holes 2-1 and the threaded holes 1-1 are arranged in two rows along the line direction, the first convex edges 2-2 and the grooves 4-2 are symmetrically arranged and respectively positioned at the outer sides of the threaded holes 1-1 in each row, and the lower ends of the inner clamping plates 1 and the joint surfaces of the inner cavities of the C-shaped contact rails 4 form line contact through the first convex edges 2-2, so that the electric virtual connection phenomenon caused by uneven contact of the joint surfaces is avoided.

The above embodiments are only preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, so that all equivalent modifications made by the appended claims shall be included in the scope of the present utility model.

Claims

1. The utility model provides a C type contact rail intermediate head which characterized in that: comprises an inner clamping plate (1), an outer clamping plate (2) and a connecting bolt (3); the section of the inner clamping plate (1) is of a T shape which is anastomotic with the inner cavity of the C-shaped contact rail (4), the inner clamping plate (1) is embedded into the inner cavities at the two sides of the joint of the adjacent C-shaped contact rail (4), the outer clamping plate (2) is arranged at one side of the rail bottom of the C-shaped contact rail (4) and penetrates through the outer clamping plate (2) through the connecting bolt (3) to be connected with the inner clamping plate (1), and the adjacent C-shaped contact rails (4) are connected and fixed together.

2. A C-shaped contact rail intermediate joint as defined in claim 1, wherein: be equipped with screw hole (1-1) on interior splint (1), be equipped with through-hole (2-1) that corresponds with screw hole (1-1) on outer splint (2), be provided with first bead (2-2) along the circuit direction on the faying face of outer splint (2) and C type contact rail (4) rail foot, be equipped with on the rail foot of C type contact rail (4) through-hole (4-1) that corresponds with through-hole (2-1), connecting bolt (3) pass through-hole (2-1), through-hole (4-1) in proper order after being connected with screw hole (1-1).

3. A C-shaped contact rail intermediate joint as defined in claim 1, wherein: the connecting bolt comprises an inner clamping plate (1), and is characterized in that a threaded hole (1-1) is formed in the inner clamping plate (1), a through hole (2-1) corresponding to the threaded hole (1-1) is formed in the outer clamping plate (2), a second convex rib (1-2) is arranged on the joint surface of the lower end of the inner clamping plate (1) and the inner cavity of the C-shaped contact rail (4) along the line direction, and the connecting bolt (3) penetrates through the through hole (2-1) and then is connected with the threaded hole (1-1).

4. A C-shaped contact rail intermediate joint as defined in claim 3, wherein: the inner cavity of the C-shaped contact rail (4) is provided with a groove (4-2) at a position corresponding to the second convex edge (1-2), and the second convex edge (1-2) is clamped in the groove (4-2).

5. A C-shaped contact rail intermediate joint according to claim 2 or 3 or 4, wherein: the outer end of the through hole (2-1) is coaxially provided with an annular concave table (2-3), and the bolt head of the connecting bolt (3) is sunk into the annular concave table (2-3).