CN211907313U

CN211907313U - Fuse type isolating switch

Info

Publication number: CN211907313U
Application number: CN202020454467.4U
Authority: CN
Inventors: 任山波
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-10
Anticipated expiration: 2030-03-31

Abstract

A fused disconnect switch comprising a housing (1), characterized in that: the driving mechanism (2) is installed on the shell (1) and can rotate on the shell (1), the moving contacts (3) are fixedly installed on the contact supports (4), the contact supports (4) are installed in the shell (1), the moving contact supports (4) can be driven to slide back and forth in the shell (1) in the rotating process of the driving mechanism (2), and the contact supports (4) can drive the two ends of the moving contacts (3) fixed on the moving contact supports to be connected with or separated from the corresponding upper fixed contacts (7), the contact wire inlet ends (5) and the corresponding wire outlet ends (6) in the back and forth sliding process of the contact supports (4) in the shell (1); the whole isolating switch is small in size in the width direction, low in cost and capable of solving the problem of insufficient space layout of complete equipment, and multiple isolating switches can be distributed in one switch cabinet, so that the cost of the switch cabinet is reduced; and the isolating switch which can be quickly switched off is arranged, so that the technical problem that the fuse is unsafe to operate in a loading mode is solved.

Description

Fuse type isolating switch

Technical Field

The utility model belongs to the technical field of isolator, specifically say so and relate to a fuse formula isolator

Background

In order to protect power transmission and distribution circuits from open circuit and overcurrent, it is generally necessary to connect fuses in series in the power distribution circuit as protection devices, and to install a disconnecting switch and control the circuit by frequent manual operation. In low current circuits it is common to combine fuses and disconnectors to protect and control the circuit, such combinations being referred to as disconnector fuse sets or fused disconnectors.

Traditional fuse formula isolator does not take isolator certainly, and can not divide disconnected fast, need manual pull out the fuse when the disconnection, and the striking when live-line operation, the security performance is not high. Meanwhile, the fuse type isolating switch on the current market only has a breakpoint at one end of the fuse, and the other side of the fuse type isolating switch is directly connected with an incoming line or an outgoing line, so that the safety performance is not high

Chinese patent 201420731441.4 discloses an isolating switch fuse set, which is formed by connecting an isolating switch body and a fuse body; the isolating switch body comprises a switch shell, a movable contact component, a first fixed contact and a second fixed contact; the first fixed contact is arranged close to the fuse body, and the second fixed contact is arranged far away from the fuse body; the fuse body comprises a fuse shell, a fuse link arranged in the fuse shell, a first fuse link socket and a second fuse link socket; the contact knives at the two ends of the fuse link are electrically connected with the first fuse link socket and the second fuse link; the first fuse link socket and the second fuse link socket comprise a flat plate part and clamping parts formed by bending two sides of the flat plate part, and the contact knife is in plug-in contact with the clamping parts to form electric connection; one end of the flat plate part of the first fuse link socket extends into the switch shell to be used as a first fixed contact. The isolating switch fuse group has the advantages of high assembling efficiency, low production cost, strong breaking capacity and the like. However, the isolating switches are arranged in the width direction of the A phase, the B phase and the C phase in sequence, and the size of the width direction is very large, so that the space requirement of the width direction during the installation of the complete equipment can not be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at exactly to above-mentioned current fuse formula isolator very big at width direction size, can't satisfy the technical requirement of the space requirement of width direction when the complete sets installation, provide a fuse formula isolator, whole isolator width direction size is less, and the cost is lower, when needs outage, only need cut off isolator through quick deciliter mechanism, then pull off the fuse can again to the security performance of switch has been improved. Meanwhile, the size in the width direction is reduced, the problem of insufficient space layout of complete equipment is solved, a plurality of isolating switches can be distributed on one switch cabinet, and the cost of the switch cabinet is reduced.

Technical scheme

In order to realize the technical purpose, the utility model provides a fuse formula isolator, including casing, actuating mechanism, moving contact, contact support, contact inlet wire end, contact leading-out terminal, go up static contact and fuse, its characterized in that: the driving mechanism is arranged on the shell and can rotate on the shell, the moving contacts are fixedly arranged on the contact supports, the contact supports are arranged in the shell, the driving mechanism can drive the contact supports to slide back and forth in the shell in the rotating process, and the contact supports can drive the two ends of the moving contacts fixed on the contact supports to be connected with or separated from the corresponding upper fixed contacts, the contact wire inlet ends and the contact wire outlet ends in the back and forth sliding process in the shell;

the plurality of fuses are arranged between the corresponding plurality of upper fixed contacts, the plurality of fuses are arranged on the corresponding plurality of fuse bases, and the plurality of fuse bases are connected with the corresponding plurality of upper fixed contacts.

Furthermore, the upper fixed contacts, the contact wire inlet ends and the contact wire outlet ends are fixedly arranged on the shell.

Further, the driving mechanism is installed in a first installation hole on one side end of the shell and can rotate in the first installation hole.

Further, the contact support is mounted in a sliding groove in the housing and is slidable in the sliding groove.

Furthermore, the plurality of contact wire inlet ends and the contact wire outlet ends are positioned below the plurality of upper fixed contacts and correspond to the lower ends of the plurality of movable contacts.

Further, the fuses are inserted in the fuse holder.

Furthermore, actuating mechanism includes the drive square shaft, and the actuating lever dress is in can by on the drive square shaft drives and rotates, connecting rod one end with the contact support is articulated, and the other end with the actuating lever is connected, actuating spring dress is on the actuating spring mount pad, actuating spring with the actuating lever is connected can with the combined action of actuating lever makes the connecting rod drive the contact supports and slides back and forth in the casing.

Further, the driving spring mounting seat is arranged on a spring base rotating shaft in the shell and can rotate around the spring base rotating shaft.

Advantageous effects

The utility model provides a pair of fuse formula isolator, whole isolator width direction size is less, and the cost is lower, when needs outage, only need cut off isolator through quick deciliter mechanism, then pull off the fuse can to the security performance of switch has been improved. Meanwhile, the size in the width direction is reduced, the problem of insufficient space layout of complete equipment is solved, a switch cabinet can be provided with a plurality of isolating switches, and the cost of the switch cabinet is reduced; and the isolating switch which can be quickly switched off is arranged, so that the technical problem that the fuse is unsafe to operate in a loading mode is solved.

Drawings

Fig. 1 is a schematic structural diagram of a product according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a closing state of a product according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a product opening state according to an embodiment of the present invention.

Fig. 4 is a schematic view of a driving mechanism in a closing state of a product according to an embodiment of the present invention.

Fig. 5 is a schematic view of a driving mechanism in a product opening state according to an embodiment of the present invention.

Fig. 6 is a schematic view of a driving mechanism in an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

As shown in fig. 1,2 and 3, the fuse type disconnecting switch includes a housing 1, a driving mechanism 2, a movable contact 3, a contact support 4, a contact incoming line end 5, a contact outgoing line end 6, an upper stationary contact 7 and a fuse 8, wherein the driving mechanism 2 is mounted on the housing 1 and can rotate on the housing 1, and the driving mechanism 2 is mounted in a first mounting hole 101 on one side end of the housing 1 and can rotate in the first mounting hole 101. In this embodiment, specifically, as shown in fig. 4,5 and 6, the driving mechanism 2 includes a driving square shaft 201, the driving square shaft 201 is located in the first mounting hole 101, the driving lever 202 is mounted on the driving square shaft 201 and can be driven by the driving square shaft 201 to rotate, one end of a connecting rod 206 is hinged to the contact support 4, the other end of the connecting rod 206 is provided with a kidney-shaped hole 206a, the driving lever 202 is provided with a lever shaft 202a, the lever shaft 202a extends into the kidney-shaped hole 206a, the driving spring 203 is mounted on a driving spring mounting seat 204, the driving spring mounting seat 204 is mounted on a spring base rotating shaft 205 in the housing 1, the driving spring mounting seat 204 is connected to the lever shaft 202a and can rotate around the spring base rotating shaft 205 under the driving of the lever shaft 202a, and one end of the driving spring 203 abuts against the lever shaft 202a on the driving lever 202 to cooperate with the driving lever 202 to enable the connecting rod 201 206 bring the contact support 4 to slide back and forth in the housing 1.

The plurality of moving contacts 3 are fixedly mounted on the contact supports 4, the contact supports 4 are mounted in the housing 1, and the driving mechanism 2 can drive the contact supports 4 to slide back and forth in the housing 1 in the rotating process.

The contact support 4 can drive two ends of a plurality of moving contacts 3 fixed thereon to be connected with or separated from a plurality of corresponding upper fixed contacts 7, contact wire inlet ends 5 and contact wire outlet ends 6 in the process of sliding back and forth in the shell 1; the upper fixed contacts 7, the contact wire inlet end 5 and the contact wire outlet end 6 are fixedly arranged on the shell 1. In this embodiment, the plurality of contact wire inlet ends 5 and the contact wire outlet ends 6 are located below the plurality of upper fixed contacts 7 and correspond to the lower ends of the plurality of movable contacts 3. The plurality of fuses 8 are arranged between the corresponding plurality of upper fixed contacts 7, the plurality of fuses 8 are arranged on the corresponding plurality of fuse holders 9, and the plurality of fuse holders 9 are connected with the corresponding plurality of upper fixed contacts 7. In this embodiment, a plurality of fuses 8 are inserted into and removed from a plurality of fuse holders 9.

As shown in fig. 4 and 5, in the process of forward rotation or reverse rotation of the driving square shaft 201, the driving spring 203 is compressed or released, and under the combined action of the driving spring 203, the contact support 4 is driven by the lever shaft 202a to move in the kidney-shaped hole 206a through the connecting rod 206 to slide back and forth in the housing 1, so as to drive two ends of the plurality of movable contacts 3 to be connected with or separated from the corresponding plurality of upper fixed contacts 7, contact wire inlet ends 5 and contact wire outlet ends 6;

in this embodiment, the driving mechanism, the phase a, the phase B, and the phase C of the disconnecting switch are arranged in the longitudinal direction due to the above structural layout. The size in the width direction is reduced, the problem of insufficient space layout of complete equipment is solved, a switch cabinet can be provided with a plurality of isolating switches, and the cost of the switch cabinet is reduced; on the other hand: a phase, B phase and C phase of the isolating switch can be pulled by the driving mechanism to disconnect the contacts, then the fuse is pulled out, the two sides of the fuse are powered off, arc discharge can not occur, and safety of on-load operation of the fuse is improved.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fuse formula isolator, includes casing (1), actuating mechanism (2), moving contact (3), contact support (4), contact inlet wire end (5), contact leading-out terminal (6), goes up static contact (7) and fuse (8), its characterized in that: the driving mechanism (2) is installed on the shell (1) and can rotate on the shell (1), the moving contacts (3) are fixedly installed on the contact supports (4), the contact supports (4) are installed in the shell (1), the driving mechanism (2) can drive the contact supports (4) to slide back and forth in the shell (1) in the rotating process, and the contact supports (4) can drive the two ends of the moving contacts (3) fixed on the driving mechanism to be connected with or separated from the corresponding upper fixed contacts (7), the contact wire inlet ends (5) and the contact wire outlet ends (6) in the back and forth sliding process in the shell (1);

the fuses (8) are arranged among the corresponding upper fixed contacts (7), the fuses (8) are arranged on the corresponding fuse bases (9), and the fuse bases (9) are connected with the corresponding upper fixed contacts (7).

2. A fused disconnect switch as defined in claim 1 wherein: and the upper fixed contacts (7), the contact wire inlet end (5) and the contact wire outlet end (6) are fixedly arranged on the shell.

3. A fused disconnect switch as defined in claim 1 wherein: the driving mechanism (2) is installed in a first installation hole (101) on one side end of the shell (1) and can rotate in the first installation hole (101).

4. A fused disconnect switch as defined in claim 1 wherein: the contact support (4) is mounted in a sliding groove (102) in the housing (1) and can slide in the sliding groove (102).

5. A fused disconnect switch as defined in claim 2 wherein: the plurality of contact wire inlet ends (5) and the contact wire outlet ends (6) are positioned below the plurality of upper fixed contacts (7) and correspond to the lower ends of the plurality of moving contacts (3).

6. A fused disconnect switch as defined in claim 1 wherein: the fuses (8) are inserted in the fuse holder (9).

7. A fused disconnect switch as defined in claim 1 or 3 wherein: the driving mechanism (2) comprises a driving square shaft (201), a driving lever (202) is arranged on the driving square shaft (201) and can be driven by the driving square shaft (201) to rotate, one end of a connecting rod (206) is hinged with the contact support (4), the other end of the connecting rod is connected with the driving lever (202), a driving spring (203) is arranged on a driving spring mounting seat (204), and the driving spring (203) is connected with the driving lever (202).

8. A fused disconnect switch as defined in claim 7 wherein: the driving spring mounting seat (204) is arranged on a spring base rotating shaft (205) in the shell (1) and can rotate around the spring base rotating shaft (205).