CN113054539A

CN113054539A - Shock-resistant contact box

Info

Publication number: CN113054539A
Application number: CN201911361973.7A
Authority: CN
Inventors: 王自发
Original assignee: Jurong Ctiy Kate Electric Co ltd
Current assignee: Jurong Ctiy Kate Electric Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-06-29
Anticipated expiration: 2039-12-26
Also published as: CN113054539B

Abstract

The application provides an anti-seismic contact box which comprises a shell, an anti-seismic plate, a fixed contact, a movable contact and a bus; the anti-seismic plate comprises a connecting plate, two fixed columns, two sliding chutes and two sliding plates, wherein the fixed columns are positioned on one side of the connecting plate, the two sliding chutes are respectively positioned on two sides of the other side of the connecting plate, one end of each sliding plate is tightly attached to the connecting plate, and the other end of each sliding plate slides in the corresponding sliding chute; the static contact comprises a grounding binding post, a stop ring and a connecting contact. When the contact box is used, when the contact box vibrates, the sliding plate can slide in the sliding groove, so that the connecting plate can move relative to the sliding plate, the contact area between the sliding plate and the connecting plate is not changed, and the moving contact is in contact connection with the sliding plate, so that the area change of a current channel between the moving contact and the static contact is not caused, sparks are not caused, and the problem that the temperature in the contact box is increased due to the fact that the static contact and the moving contact can move mutually when the contact box vibrates is solved.

Description

Shock-resistant contact box

Technical Field

The application belongs to the field of contact box equipment, and particularly relates to an anti-seismic contact box.

Background

The high-voltage switch cabinet is one of the most important parts in an electric power system, a bus system installed in a cabinet body of the high-voltage switch cabinet is connected with a static contact of a circuit breaker device through a contact box, the contact box and the static contact of the existing high-voltage switch cabinet are both in a sleeve shape, and the bottom end of a smaller static contact cylinder is fixedly installed in a larger contact box.

The existing contact box comprises a cylindrical box body, and an installation busbar outlet is arranged at the upper part of the box body. The combined cabinet has the function of avoiding phenomena of corona discharge and the like caused by exposure of a combined cabinet joint and a connecting piece. The existing contact box is basically only one box body, so that the vibration of equipment is difficult to avoid in the using process. After the equipment vibrates, the static contact and the moving contact in the contact box move mutually, so that the contact area of the static contact and the moving contact is changed, sparks are generated between the static contact and the moving contact, the temperature in the contact box is increased, and the service life of the contact box is shortened.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an anti-seismic contact box to solve the problem that the temperature in the contact box is increased because a static contact and a moving contact move mutually when the conventional contact box vibrates.

An anti-seismic contact box comprises a shell, an anti-seismic plate, a fixed contact, a moving contact and a bus;

the anti-seismic plate comprises a connecting plate, two fixing columns, two sliding chutes and two sliding plates, wherein the two fixing columns are located on one surface of the connecting plate, the two sliding chutes are respectively located on two sides of the other surface of the connecting plate, one end of each sliding plate is tightly attached to the connecting plate, the other end of each sliding plate slides in the corresponding sliding chute, a spring is arranged between one side of the connecting plate and the bottom edge of the connecting plate, and the fixing columns are used for fixing the anti-seismic plate in the shell;

the static contact comprises a grounding binding post, a stop ring and a connecting contact, the grounding binding post is positioned on the outer side of the top of the shell, the stop ring is clamped on the top of the shell and a bus, the projection shape of the connecting contact is L-shaped, the top end of the connecting contact is fixedly connected with the stop ring, and the bottom edge of the connecting contact is fixedly connected with the connecting plate;

the projection shape of the moving contact is an inverted L shape, the bottom edge of the moving contact is propped against the lower surface of the sliding plate, and the sliding plate is subjected to downward tension under the action of the spring.

Preferably, the sliding plate is provided with a pulley at each of two edges of one side of the connecting plate for sliding in the sliding groove.

Preferably, the bottom of the shell is further provided with a damping part, and the damping part is made of silicon rubber.

Preferably, the housing is made of epoxy resin or thermoplastic polyester resin.

Preferably, the outer side of the housing is provided with a heat sink.

Preferably, the anti-seismic plate is made of a metal material.

Preferably, the surface of the anti-seismic plate is plated with a silver layer.

According to the scheme, the anti-seismic contact box comprises a shell, an anti-seismic plate, a fixed contact, a movable contact and a bus; the anti-seismic plate comprises a connecting plate, two fixing columns, two sliding chutes and two sliding plates, wherein the two fixing columns are located on one surface of the connecting plate, the two sliding chutes are respectively located on two sides of the other surface of the connecting plate, one end of each sliding plate is tightly attached to the connecting plate, the other end of each sliding plate slides in the corresponding sliding chute, a spring is arranged between one side of the connecting plate and the bottom edge of the connecting plate, and the fixing columns are used for fixing the anti-seismic plate in the shell; the static contact comprises a grounding binding post, a stop ring and a connecting contact, the grounding binding post is positioned on the outer side of the top of the shell, the stop ring is clamped on the top of the shell and a bus, the projection shape of the connecting contact is L-shaped, the top end of the connecting contact is fixedly connected with the stop ring, and the bottom edge of the connecting contact is fixedly connected with the connecting plate; the projection shape of the moving contact is an inverted L shape, the bottom edge of the moving contact is propped against the lower surface of the sliding plate, and the sliding plate is subjected to downward tension under the action of the spring.

When the contact box vibrates in use, the fixed contact and the connecting plate are fixed on the shell, so the devices are inevitably moved, the sliding plate can slide in the sliding groove, the connecting plate can move relative to the sliding plate, and when the sliding plate and the connecting plate move, the contact area of the sliding plate and the connecting plate is not changed, and the moving contact is in contact connection with the sliding plate, so the area change of a current channel between the moving contact and the fixed contact cannot be caused, and sparks cannot be caused. Therefore, the problem that the temperature in the contact box is increased due to the fact that the fixed contact and the moving contact move mutually when the contact box vibrates is solved, the anti-seismic contact box has a good anti-seismic effect, and the service life is prolonged.

Drawings

FIG. 1 is a schematic structural view of an anti-seismic contact box according to the present application;

fig. 2 is a schematic structural view of the seismic panel of the present application.

Detailed Description

The technical solutions in the embodiments shown in the present application will be clearly and completely described below with reference to the drawings in the embodiments shown in the present application.

Referring to the schematic diagrams shown in fig. 1 to 2, an anti-seismic contact box includes a housing 1, an anti-seismic plate 2, a fixed contact 3, a movable contact 4, and a bus 5; the anti-seismic plate 2 comprises a connecting plate 21, two fixing columns 22, two sliding grooves 23 and two sliding plates 24, wherein the fixing columns 22 are located on one surface of the connecting plate 21, the two sliding grooves 23 are respectively located on two sides of the other surface of the connecting plate 21, one end of each sliding plate 24 is tightly attached to the connecting plate 21, the other end of each sliding plate 24 slides in the corresponding sliding groove 23, a spring is arranged between one side of each sliding plate 24 located on the connecting plate 21 and the bottom edge of the corresponding connecting plate 21, and the fixing columns 22 are used for fixing the anti-seismic plate 2 in the shell 1; the fixed contact 3 comprises a grounding terminal 31, a stop ring 32 and a connecting contact 33, the grounding terminal 31 is positioned at the outer side of the top of the shell 1, the stop ring 32 is clamped on the top of the shell 1 and the bus 5, the projection shape of the connecting contact 33 is L-shaped, the top end of the connecting contact 33 is fixedly connected with the stop ring 32, and the bottom edge of the connecting contact 33 is fixedly connected with the connecting plate 21; the projection shape of the movable contact 4 is an inverted L shape, the bottom edge of the movable contact 4 is pressed against the lower surface of the sliding plate 24, and the sliding plate 24 is subjected to downward tension under the action of a spring.

An outlet 11 is arranged at the side edge of the upper part of the shell 1, an inlet 12 is arranged at the bottom of the shell 1, the bus 5 extends out of the outlet 11, and the movable contact 4 extends into the shell 1 from the inlet 12. When the contact box is used, when the contact box vibrates, since the fixed contact 3 and the connecting plate 21 are both fixed on the housing 1, these devices inevitably move, and the sliding plate 24 can slide in the sliding groove 23, so that the connecting plate 21 moves relative to the sliding plate 24, and when the sliding plate 24 and the connecting plate 21 move, the contact area between the sliding plate 24 and the connecting plate 21 does not change, and the movable contact 4 is in contact connection with the sliding plate 24, so that the area change of the current channel between the movable contact 4 and the fixed contact 3 is not caused, and sparks are not caused. Therefore, the problem that the temperature in the contact box is increased due to the fact that the fixed contact and the moving contact move mutually when the contact box vibrates is solved, the anti-seismic contact box has a good anti-seismic effect, and the service life is prolonged.

The sliding plate 24 is provided with a pulley at each of two edges of one side of the connecting plate 21 for sliding in the sliding groove 23. The pulley is arranged, so that the sliding plate 24 can slide in the sliding groove 23 more smoothly, the moving contact 4 and the sliding plate 24 are prevented from moving relatively, the contact area between the moving contact 4 and the sliding plate 24 is prevented from being changed, and the area of a current channel between the moving contact 4 and the static contact 3 is further ensured to be constant.

The bottom of the shell 1 is also provided with a damping part 6, and the damping part 6 is made of silicon rubber. When the vibration is small, the damping part 6 can be directly filtered. The shock absorbing part 6 can also reduce the shock strength of the housing 1 during a large shock, thereby reducing the risk of the change of the contact area between the movable contact 4 and the sliding plate 24. In addition, the silicon rubber has good damping effect and good insulativity.

The housing 1 is made of epoxy resin or thermoplastic polyester resin. The outer side of the housing 1 is provided with a heat sink, which is also made of epoxy resin or thermoplastic polyester resin, and the heat sink is integrally formed with the housing 1.

The anti-seismic plate 2 is made of metal materials, so that good conductivity is guaranteed. The surface of the anti-seismic contact box 2 is plated with a silver layer, the silver is made of conductive materials with several silver conductivity, the price is lower than that of noble metals such as gold, and after silver plating, the generation of sparks can be effectively reduced, so that the service life of the anti-seismic contact box can be further prolonged.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. An anti-seismic contact box is characterized by comprising a shell (1), an anti-seismic plate (2), a static contact (3), a moving contact (4) and a bus (5);

the anti-seismic plate (2) comprises a connecting plate (21), two fixing columns (22), two sliding grooves (23) and two sliding plates (24), the fixing columns (22) are located on one surface of the connecting plate (21), the two sliding grooves (23) are respectively located on two sides of the other surface of the connecting plate (21), one end of each sliding plate (24) is tightly attached to the connecting plate (21), the other end of each sliding plate (24) slides in the corresponding sliding groove (23), a spring is arranged between one side, located on the connecting plate (21), of each sliding plate (24) and the bottom edge of the connecting plate (21), and the fixing columns (22) are used for fixing the anti-seismic plate (2) in the shell (1);

the static contact (3) comprises a grounding terminal (31), a stop ring (32) and a connecting contact (33), the grounding terminal (31) is positioned on the outer side of the top of the shell (1), the stop ring (32) is clamped on the top of the shell (1) and the bus bar (5), the projection shape of the connecting contact (33) is L-shaped, the top end of the connecting contact (33) is fixedly connected with the stop ring (32), and the bottom edge of the connecting contact (33) is fixedly connected with the connecting plate (21);

the projection shape of the moving contact (4) is an inverted L shape, the bottom edge of the moving contact (4) is pressed against the lower surface of the sliding plate (24), and the sliding plate (24) is subjected to downward tension under the action of a spring.

2. The box of claim 1, wherein the sliding plate (24) is provided with a pulley at each edge of the connecting plate (21) for sliding in the sliding groove (23).

3. The box of claim 2, wherein the bottom of the shell (1) is further provided with a shock absorption part (6), and the shock absorption part (6) is made of silicon rubber.

4. Seismic contact box according to claim 3, characterized in that the housing (1) is made of epoxy resin or thermoplastic polyester resin.

5. Seismic contact box according to any of claims 1 to 4, characterised in that the outside of the housing (1) is provided with cooling fins.

6. Seismic contact box according to any of claims 1 to 4, characterized in that the seismic plates (2) are made of a metallic material.

7. The box according to claim 6, characterized in that the surface of the anti-seismic plate (2) is plated with silver.