CN218386399U

CN218386399U - Moving contact, isolation handcart and high-voltage board

Info

Publication number: CN218386399U
Application number: CN202222708081.3U
Authority: CN
Inventors: 南海峡; 张宝贵
Original assignee: Zhejiang Lingkun Electric Co ltd
Current assignee: Zhejiang Lingkun Electric Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-01-24
Anticipated expiration: 2032-10-14

Abstract

The utility model discloses a moving contact, isolation handcart and high-voltage board that moving contact is connected and contact is more stable. The technical scheme adopted comprises the following steps: the two ends of the outer wall of the contact piece are at least provided with a spring mounting groove, the front end of the inner wall is provided with a front contact part, the rear end of the inner wall is provided with a rear contact part arranged at an included angle of 90 degrees, and the middle part of the inner wall is provided with two bracket clamping grooves arranged at intervals; the annular support is provided with a group of mounting grooves which are arranged at equal intervals on the circumferential surface, and the two annular supports are arranged in front and at the back and are connected through a group of connecting columns; the two contact pieces are a group of two contact pieces which are respectively arranged in the mounting grooves of the annular support and are fixed by mounting annular springs in the spring mounting grooves of the annular support.

Description

Moving contact, isolation handcart and high-voltage board

Technical Field

The utility model belongs to the power equipment field, concretely relates to moving contact, isolation handcart and high-voltage board.

Background

The high-voltage isolation handcart is one of main components in a high-voltage cabinet, the working principle of the high-voltage isolation handcart is the same as that of an isolation switch, and the high-voltage isolation handcart is mainly characterized in that an incoming line has an obvious disconnection point during maintenance, so that the misoperation prevention is realized. The high-voltage isolation handcart mainly comprises a chassis, a handcart frame arranged on the chassis, a contact box arranged at the front end of the handcart frame, a movable contact arm arranged on the contact box and a movable contact arranged on the movable contact arm. The traditional movable contact structure on the movable contact arm, as shown in "CN 206098277U" and the chinese utility model patent named "bundled plum blossom movable contact", its structure includes: the annular support, a group of contact pieces arranged on the circumferential surface of the annular support in a circumferential arrangement mode and springs bound at two ends of the contact pieces. There are disadvantages in that: the moving contact arm and the moving contact are in single-point contact, so that the deviation of the mounting position of the moving contact and poor contact are easily caused. When the installation position of the contact is deviated, the contact cannot be accurately butted with the fixed contact.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a moving contact, isolation handcart and high-voltage board that the moving contact is connected and the contact is more stable.

In order to solve the above problem, the utility model discloses a technical scheme include:

the two ends of the outer wall of the contact piece are at least provided with a spring mounting groove, the front end of the inner wall is provided with a front contact part, the rear end of the inner wall is provided with a rear contact part arranged at an included angle of 90 degrees, and the middle part of the inner wall is provided with two bracket clamping grooves arranged at intervals;

the annular support is provided with a group of mounting grooves which are arranged at equal intervals on the circumferential surface, and the two annular supports are arranged in front and at the back and are connected through a group of connecting columns;

the two contact pieces are a group of two contact pieces which are respectively arranged in the mounting grooves of the annular support and are fixed by mounting annular springs in the spring mounting grooves of the annular support.

The moving contact is characterized in that: the tip of back contact site all is equipped with first arc chamfer.

The moving contact is characterized in that: the front contact part comprises a plane with smooth transition, a guide inclined plane and a second arc-shaped chamfer.

The moving contact is characterized in that: two spring mounting grooves are formed in two ends of the outer wall of each contact piece.

The utility model provides an isolation handcart, includes that the chassis car is established frame on the chassis car and establishing the contact box of frame front end, be equipped with the movable contact arm on the contact box, its characterized in that: the movable contact arm is provided with any one movable contact through an annular groove arranged at the front end, and the rear contact part is respectively contacted with the surface of the movable contact arm.

The isolation handcart is characterized in that: the front end face of the movable contact arm is abutted against the annular support.

The high-voltage board comprises a board body, and is characterized in that: the isolation handcart is arranged in the cabinet body.

The utility model discloses a moving contact, isolation handcart and high-voltage board advantage as follows: after the moving contact is connected with the moving contact arm, the rear contact part of the moving contact arm is contacted with the surface of the moving contact arm, and meanwhile, the front end surface of the moving contact arm is abutted against the annular bracket to realize two-point support, so that the connection and contact stability of the moving contact is greatly improved; in addition, two are the contact of a set of and install respectively in the mounting groove of ring carrier through the support draw-in groove, bind through the annular spring at both ends at last, and overall stability is better than traditional structure.

The present invention will be further explained with reference to the drawings attached to the specification.

Drawings

Fig. 1 is a schematic structural diagram of a moving contact of the present invention;

fig. 2 is an exploded view of the moving contact of the present invention;

FIG. 3 is a schematic view of the contact plate of the present invention;

FIG. 4 is a schematic structural view of the ring support of the present invention;

fig. 5 is a schematic structural diagram of the isolation handcart of the utility model;

fig. 6 is a schematic view of a partial structure of the isolation handcart of the present invention;

fig. 7 is a schematic structural diagram of the high-voltage board of the present invention.

Detailed Description

Example 1:

referring to fig. 1-4, the moving contact of the present invention is characterized by comprising: a contact plate 1 and a ring-shaped support 2. Spring mounting grooves 3 are formed in two ends of the outer wall of the contact plate 1, a front contact part 4 is arranged at the front end of the inner wall of the contact plate 1, and the contact plate is connected with a fixed contact in a high-voltage cabinet through the front contact part 4. The rear end of the inner wall of the contact piece 1 is provided with a rear contact part 5 which is arranged at an included angle of 90 degrees, and the rear contact part 5 is matched with a movable contact arm on an isolation handcart to be connected. Two support clamping grooves 7 which are arranged at intervals are arranged in the middle of the inner wall of the contact piece 1. The periphery of annular support 2 is equipped with a set of mounting groove 8 that the equidistance was arranged, the quantity of mounting groove 8 ideal is 15. Two the ring carrier 2 sets up back and forth, connect through three spliced poles 9 between the ring carrier 2, spliced pole 9 with ideally adopt the riveting to fix between the ring carrier 2. For improving stability, two contact pieces 1 are respectively installed in the installation groove 8 of the annular support 2 as a group, and are fixed by installing an annular spring 10 in the spring installation groove 3.

Preferably, the end portions of the rear contact portion 5 are provided with first arc-shaped chamfers 11, so that the contact piece 1 can better contact with the movable contact arm in the rotation process (when the movable contact is inserted into the static contact, the front end of the contact piece is opened, and the contact portion at the rear end of the contact piece is used as a fulcrum to rotate), and the contact piece can be kept stable.

Preferably, the front contact portion 4 comprises a smooth transition flat surface 12, a guide inclined surface 13 and a second arc-shaped chamfer 14. The static contact can be more smoothly inserted through the guide inclined surface 13, and the static contact can be better contacted through the second arc-shaped chamfer 14. When the moving contact is connected with the static contact, the plane 12 is attached to the front end face of the static contact, so that the moving contact and the static contact are kept stable.

Preferably, two spring mounting grooves 3 are formed in two ends of the outer wall of the contact piece 1, and annular springs 10 are mounted in the two spring mounting grooves 3, so that connection stability is further improved.

Example 2:

referring to fig. 5-6, the utility model discloses an isolated wheelbarrow, including chassis 15 establish the handcart frame 16 on chassis 15 and establish the contact box 17 at the handcart frame 6 front end. The contact box 17 is provided with a movable contact arm 18. The movable contact arm 18 is provided with a movable contact a described in embodiment 1 through an annular groove 19 provided at a front end. The specific installation mode is as follows: the rear end of the movable contact a is clamped into the annular groove 19 of the movable contact arm 18. After the installation, the rear contact part 5 is in contact with the surface of the movable contact arm 18, and the front end surface of the movable contact arm 18 is abutted against the annular support 2.

Example 3:

referring to fig. 7, the high-voltage board of the present invention includes a cabinet body 20, and the inside of the cabinet body 20 is provided with the isolated handcart b of embodiment 2. The specific installation mode is as follows: and (3) the chassis vehicle 15 of the isolated handcart b is arranged in a chassis vehicle guide rail in the cabinet body 20.

As described above, the present invention is not limited to the above embodiments, and although the present invention has been disclosed in the above embodiments, it is not limited to the above embodiments, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention.

Claims

1. A movable contact, comprising:

the spring mounting structure comprises a contact piece (1), wherein two ends of the outer wall of the contact piece are at least provided with a spring mounting groove (3), the front end of the inner wall is provided with a front contact part (4), the rear end of the inner wall is provided with a rear contact part (5) arranged at an included angle of 90 degrees, and the middle part of the inner wall is provided with two support clamping grooves (7) arranged at intervals;

the annular support (2) is provided with a group of mounting grooves (8) which are arranged at equal intervals on the circumferential surface, and the two annular supports (2) are arranged in front and at the back and are connected through a group of connecting columns (9);

the two contact pieces (1) are a group and are respectively installed in the installation grooves (8) of the annular support (2) and are fixed by installing annular springs (10) in the spring installation grooves (3).

2. A movable contact according to claim 1, wherein: the end parts of the rear contact parts (5) are provided with first arc-shaped chamfers (11).

3. A movable contact according to claim 1, wherein: the front contact part (4) comprises a smooth transition plane (12), a guide inclined plane (13) and a second arc-shaped chamfer (14).

4. A movable contact according to claim 1, wherein: two spring mounting grooves (3) are formed in two ends of the outer wall of the contact piece (1).

5. The utility model provides an isolated wheelbarrow, includes chassis car (15) and establishes handcart frame (16) on chassis car (15) and establish contact box (17) of handcart frame (16) front end, be equipped with movable contact arm (18) on contact box (17), its characterized in that: the movable contact arm (18) is provided with a movable contact (a) as claimed in any one of claims 1-4 through an annular groove (19) arranged at the front end, and the rear contact part (5) is contacted with the surface of the movable contact arm (18).

6. The isolated hand truck of claim 5, wherein: the front end face of the movable contact arm (18) is abutted against the annular support (2).

7. A high-voltage board, includes the cabinet body (20), its characterized in that: the isolated handcart (b) of claim 5 or 6 is arranged in the cabinet body (20).