CN212709053U

CN212709053U - Conductive bus bar assembly

Info

Publication number: CN212709053U
Application number: CN202021253321.XU
Authority: CN
Inventors: 徐阳; 林�建; 刘娟; 李忠齐; 赵金凤; 杨敏飞; 宋伟; 邓相龙
Original assignee: China Railway High Speed Electrification Equipment Corp Ltd
Current assignee: China Railway High Speed Electrification Equipment Corp Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-03-16
Anticipated expiration: 2030-07-01

Abstract

The utility model provides a conductive bus bar subassembly, includes busbar, intermediate head and locking bolt, the interior cavity lateral wall of busbar has protruding muscle along the line direction symmetry, the symmetrical cartridge of intermediate head is in two adjacent busbar ends, and the position that the intermediate head corresponds protruding muscle has the recess, locking bolt passes behind the connecting hole at busbar middle part and is connected with the intermediate head, fixes busbar and intermediate head together to make protruding muscle be located the recess, and then with two adjacent busbar ends connect together fixedly. The utility model discloses a position matching of locking bolt and muscle groove guarantees that the product is electric to continue to connect, reduces the influence to busbar contact wire clamping-force to and the flagging of busbar in the joint position. Meanwhile, the number of bolts required during the installation of the joint is reduced, and the construction, installation and maintenance are facilitated.

Description

Conductive bus bar assembly

Technical Field

The utility model relates to a this high-speed electronic railway contact net field, concretely relates to conductive busbar subassembly.

Background

In the rigid suspension power supply system of the rail transit, a bus bar is used for clamping a contact wire and carrying current, the length of a single bus bar is about 12 meters, and the bus bars are connected through an intermediate connector to form a continuous power supply network, and the intermediate connector plays a role in mechanical and electrical connection.

Currently, the connection structure of the bus bar and the intermediate joint is shown in fig. 6. The following disadvantages exist:

1) the number of fasteners at the joint of the bus bars is large, and each set of bus bar intermediate joint is matched with 16 groups of bolts, so that the installation, the operation and the maintenance are not facilitated;

2) the bolt is positioned in the middle of the two convex ribs of the middle joint, and after the fastening torque is applied, the convex ribs are equivalent to fulcrums to force the bus bar clamping part at the joint to expand, so that the clamping force on the contact line cannot be ensured;

3) the clearance between the middle joint and the inner cavity of the bus bar is large, the limit function of the middle joint is limited, and the sagging of the bus bar caused by the dead weight is difficult to control.

SUMMERY OF THE UTILITY MODEL

The utility model provides a conductive bus bar component, which overcomes the defects of the prior art.

The utility model adopts the technical proposal that: the utility model provides a conductive bus bar subassembly, includes busbar, intermediate head and locking bolt, the interior cavity lateral wall of busbar has protruding muscle along the line direction symmetry, the symmetrical cartridge of intermediate head is in two adjacent busbar ends, and the position that the intermediate head corresponds protruding muscle has the recess, locking bolt passes behind the connecting hole at busbar middle part and is connected with the intermediate head, fixes busbar and intermediate head together to make protruding muscle be located the recess, and then with two adjacent busbar ends connect together fixedly.

The convex ribs comprise an upper convex rib, a middle convex rib and a lower convex rib, and the grooves comprise an upper groove, a middle groove and a lower groove; the locking bolt is superposed with the central lines of the middle convex rib, the middle groove and the connecting hole, and the lower convex rib and the lower groove are symmetrically positioned at two sides of the jaw of the busbar.

The upper convex rib is an arc convex rib, and the upper groove is an arc groove matched with the arc convex rib; the middle convex rib is a triangular convex rib, and the middle groove is a triangular groove matched with the triangular convex rib; the lower convex rib is a rectangular convex rib perpendicular to the line direction, and the lower groove is a rectangular groove matched with the rectangular convex rib.

The middle part of the middle joint is provided with a threaded hole, and the locking bolt is in threaded connection with the threaded hole.

The middle part of the middle joint is provided with a stepped hole with the diameter of the inner end larger than that of the outer end, a locking nut is embedded in the stepped hole, and the locking bolt penetrates through the stepped hole to be in threaded connection with the locking nut.

The middle part of the middle joint is provided with a threaded hole, a steel wire thread insert is installed in the threaded hole, and the locking bolt is in threaded connection with the steel wire thread insert.

Compared with the prior art, the utility model discloses beneficial effect who has:

1) the number of bolts required for installing the joint is reduced, and construction, installation and maintenance are facilitated;

2) through gap control and rib groove arrangement, the droop of the bus bar at the joint position is reduced;

3) through the position matching of the connecting bolt and the rib groove, the electrical connection of a product is ensured, and the influence on the clamping force of a contact line of the busbar is reduced.

4) The nut or the steel wire thread insert is arranged on the intermediate joint, so that the reliability of threaded connection is improved.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of embodiment 3 of the present invention;

FIG. 4 is a schematic view of the bus bar structure of the present invention;

fig. 5 is a schematic structural diagram of an embodiment of the middle joint of the present invention;

FIG. 6 is a schematic view of a connection structure of a bus bar and an intermediate joint according to the prior art.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-5 and the detailed description thereof.

Example 1: referring to fig. 1 and 4, the conductive busbar assembly comprises a busbar 1, an intermediate joint 2 and a locking bolt 3, wherein the intermediate joint 2 is of a plate-shaped structure; the bus bar comprises bus bars 1 and is characterized in that convex ribs 4 are symmetrically arranged on the side wall of an inner cavity of each bus bar 1 along the line direction, intermediate connectors 2 are symmetrically inserted into the ends of two adjacent bus bars 1, grooves 5 are formed in positions, corresponding to the convex ribs 4, of the intermediate connectors 2, locking bolts 3 penetrate through connecting holes 6 in the middle of the bus bars 1 and then are in threaded connection with threaded holes 7 in the middle of the intermediate connectors 2, the bus bars 1 and the intermediate connectors 2 are fixed together, the convex ribs 4 are located in the grooves 5, and the ends of the two adjacent bus bars 1 are connected and fixed together.

The convex ribs 4 comprise upper convex ribs 4-1, middle convex ribs 4-2 and lower convex ribs 4-3, and the grooves 5 comprise upper grooves 5-1, middle grooves 5-2 and lower grooves 5-3; the center lines of the middle convex rib 4-2, the middle groove 5-2, the connecting hole 6 and the threaded hole 7 are overlapped, and the lower convex rib 4-3 and the lower groove 5-3 are symmetrically positioned at two sides of the jaw of the busbar 1.

The upper convex rib 4-1 is an arc convex rib, and the upper groove 5-1 is an arc groove matched with the arc convex rib; the middle convex rib 4-2 is a triangular convex rib, and the middle groove 5-2 is a triangular groove matched with the triangular convex rib; the lower convex rib 4-3 is a rectangular convex rib vertical to the line direction, and the lower groove 5-3 is a rectangular groove matched with the rectangular convex rib.

Example 2: referring to fig. 2, 4 and 5, the basic structure is the same as that of embodiment 1, except that the middle part of the intermediate joint 2 is provided with a stepped hole 8 with the inner end diameter larger than the outer end diameter, a locking nut 9 is embedded in the stepped hole 8, and the locking bolt 3 passes through the stepped hole 8 to be in threaded connection with the locking nut 9, so that the threaded connection strength is further improved.

Example 3: referring to fig. 3 and 4, the basic structure is the same as that of embodiment 1, except that a wire thread insert 10 is installed in a threaded hole 7 formed in the middle of the intermediate joint 2, and the locking bolt 3 is in threaded connection with the wire thread insert 10, so that the threaded connection strength is further improved.

The utility model discloses after the assembly locking bolt 3 and the central line coincidence of middle part protruding muscle 4-2, middle part recess 5-2, connecting hole 6, screw hole 7 or step hole 8 do not have the fulcrum on the inner chamber lateral wall of busbar 1 and intermediate head 2's the contact surface, avoid producing the expansion of keeping silent because of exerting fastening torque, guarantee the busbar to the clamping-force of contact line.

When the utility model is installed and fastened, the upper convex rib 4-1, the middle convex rib 4-2 and the lower convex rib 4-3 are respectively aligned with the upper groove 5-1, the middle groove 5-2 and the lower groove 5-3 automatically, which has the supporting and limiting function and can effectively avoid the sagging of the joint of the busbar due to self weight.

The utility model discloses can increase its cross sectional area and girth through the protruding muscle that sets up on the busbar after the assembly, improve the current-carrying capacity, behind the locking bolt fastening, protruding muscle and the recess of corresponding contact completely effectively guarantee electric continuation and connect.

The utility model discloses a keep silent the position at the busbar and set up the protruding muscle of symmetry distribution's rectangle, through the protruding muscle of rectangle cooperates with the last corresponding rectangle recess of intermediate head, and the mounted position of restriction intermediate head reduces the intermediate head installation procedure, improves the installation effectiveness, the later stage operation maintenance of being convenient for.

The upper convex rib of the utility model is a circular arc convex rib, and the upper groove is a circular arc groove matched with the circular arc convex rib; the middle convex rib is a triangular convex rib, and the middle groove is a triangular groove matched with the triangular convex rib; when the installation is fastened, the arc groove rotates slightly around the arc convex rib to ensure that the triangular convex rib and the triangular groove realize tight fit.

The utility model discloses busbar, intermediate head are the aluminum alloy spare, locking bolt, lock nut and steel wire swivel nut are the steelwork.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that all equivalent changes made by the contents of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An electrically conductive busbar assembly comprising a busbar (1), an intermediate joint (2) and a locking bolt (3), characterized in that: the bus bar connector is characterized in that convex ribs (4) are symmetrically arranged along the line direction on the side wall of an inner cavity of each bus bar (1), the middle joint (2) is symmetrically inserted into the ends of the two adjacent bus bars (1), a groove (5) is formed in the position, corresponding to the convex ribs (4), of the middle joint (2), the locking bolt (3) penetrates through a connecting hole (6) in the middle of each bus bar (1) and then is connected with the middle joint (2), the bus bars (1) are fixed together with the middle joint (2), and the convex ribs (4) are located in the groove (5), so that the ends of the two adjacent bus bars (1) are fixedly connected together.

2. The conductive buss bar assembly of claim 1, wherein: the convex ribs (4) comprise upper convex ribs (4-1), middle convex ribs (4-2) and lower convex ribs (4-3), and the grooves (5) comprise upper grooves (5-1), middle grooves (5-2) and lower grooves (5-3); the locking bolt (3) is superposed with the central lines of the middle convex rib (4-2), the middle groove (5-2) and the connecting hole (6), and the lower convex rib (4-3) and the lower groove (5-3) are symmetrically positioned on two sides of the jaw of the busbar (1).

3. The conductive buss bar assembly of claim 2, wherein: the upper convex rib (4-1) is an arc convex rib, and the upper groove (5-1) is an arc groove matched with the arc convex rib; the middle convex rib (4-2) is a triangular convex rib, and the middle groove (5-2) is a triangular groove matched with the triangular convex rib; the lower convex rib (4-3) is a rectangular convex rib vertical to the line direction, and the lower groove (5-3) is a rectangular groove matched with the rectangular convex rib.

4. A conductive buss bar assembly as recited in claim 3, wherein: the middle part of the middle joint (2) is provided with a threaded hole (7), and the locking bolt (3) is in threaded connection with the threaded hole (7).

5. A conductive buss bar assembly as recited in claim 3, wherein: the middle part of the middle joint (2) is provided with a step hole (8) with the inner end diameter larger than the outer end diameter, a locking nut (9) is embedded in the step hole (8), and the locking bolt (3) penetrates through the step hole (8) to be in threaded connection with the locking nut (9).

6. A conductive buss bar assembly as recited in claim 3, wherein: the middle part of the middle joint (2) is provided with a threaded hole (7), a steel wire threaded sleeve (10) is installed in the threaded hole (7), and the locking bolt (3) is in threaded connection with the steel wire threaded sleeve (10).