CN217505916U

CN217505916U - Internal-expanding wire clamp of handcart switch loop resistance tester of switch cabinet

Info

Publication number: CN217505916U
Application number: CN202123192671.7U
Authority: CN
Inventors: 孙磊; 仇德军; 范志颖; 吴浩; 薛文杰; 朱昀昇; 刑春琛
Original assignee: Taizhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Taizhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2021-12-19
Filing date: 2021-12-19
Publication date: 2022-09-27
Anticipated expiration: 2031-12-19

Abstract

The utility model discloses an interior formula fastener of cubical switchboard handcart-type switch loop resistance tester, the middle part of its clamp I (1) is connected for rotating with the middle part of clamp II (2), constitute scissors formula line clamp behind clamp I (1) and clamp II (2) cross connection, the fastener contact I (3) of clamp I (1) one side is located same one side with fastener contact II (4) of one side of clamp II (2), voltage wire (5) that the opposite side of clamp I (1) is connected is located same one side with current wire (6) of the opposite side of clamp II (2), current wire (6) and voltage wire (5) all are connected with the test instrument, prop open back clamp contact I (3) and plum blossom contact II (4) and the inner wall in close contact with cubical switchboard handcart switch contact when clamp I (1) and clamp II (2). The utility model discloses can reduce the test error who causes because of fastener and contact failure effectively, provide experimental readiness greatly.

Description

Internal-expanding wire clamp of switch cabinet handcart type switch loop resistance tester

Technical Field

The utility model relates to an interior formula fastener that opens of cubical switchboard handcart-type switch return circuit resistance tester.

Background

The conventional transformer substation switch cabinet vehicle collection switch is required to accurately measure the resistance value of a main loop in routine and handover tests, a handcart in a central switch cabinet mostly adopts a quincunx contact, a plurality of spring hoops are arranged on the periphery of the contact, the purpose is to enable a moving contact and a fixed contact of the handcart switch to be in close contact, the contact resistance value in the loop is ensured to be within a required range, an existing test instrument wire clamp adopts an outer clamp type, the existing test instrument wire clamp is clamped on the periphery of a quincunx contact of the handcart switch of the switch cabinet in the test process, so that a contact spring generates heat, the wire clamp is too large, the wire clamp cannot be well contacted with tested equipment, and the test accuracy is influenced.

Disclosure of Invention

The utility model provides an interior formula fastener of expanding of cubical switchboard handcart-type switch return circuit resistance tester, it can reduce effectively because of fastener and the test error that contact failure caused, provides experimental readiness greatly.

The utility model adopts the following technical scheme: the internal expanding wire clamp of the handcart switch loop resistance tester of the switch cabinet comprises a scissors type wire clamp body, wherein the scissors type wire clamp body comprises a clamp body I and a clamp body II, the middle part of the clamp body I is rotatably connected with the middle part of the clamp body II, the clamp body I and the clamp body II are in cross connection to form the scissors type wire clamp body, a wire clamp contact I is arranged at the end of one side of the clamp body I, a wire clamp contact II is arranged at the end of one side of the clamp body II, the wire clamp contact I and the wire clamp contact II are located on the same side, the other side of the clamp body I is connected with a voltage lead, the other side of the clamp body II is connected with a current lead, the voltage lead and the current lead are located on the same side, the current lead and the voltage lead are connected with a test instrument, and the wire clamp contact I and the wire clamp contact II are in close contact with the inner wall of a handcart switch plum blossom contact of the switch cabinet after the clamp body I and the clamp body II are spread.

The wire clamp contact I is arranged in the horizontal direction and then is connected with the end on one side of the clamp body I. And the wire clamp contact II is arranged in the horizontal direction and then is connected with the end head on one side of the clamp body II. The wire clamp contact I is set to be a metal wire clamp contact, and the wire clamp contact I is set to be a long strip. The wire clamp contact II is a metal wire clamp contact, and the wire clamp contact II is long. An elastic piece is arranged between the inner side of the clamp body I and the inner side of the clamp body II. The elastic piece be the spring, the spring vertically sets up between I inboard and the inboard of clamp II of clamp, the one end and the I inboard of clamp of spring are connected, the other end and the II inboard connections of clamp of spring, when strutting clamp I and clamp II, produce tension between clamp I and the clamp II. The clamp body I is long. The clamp body II is long.

The utility model discloses following beneficial effect has: after the technical scheme above the adoption, the utility model discloses with the outer clamp formula fastener change into interior expanding fastener, can make clamp I and clamp II prop up the back like this and keep in close contact with the inside of plum blossom contact, reduced effectively because of the test error that fastener and plum blossom contact harmfully caused, improved experimental accuracy, can not injure the plum blossom contact moreover, reduced the cost of maintenance of circuit breaker, improved maintenance efficiency and power supply stability, ensure power equipment's safety and stability operation. The utility model discloses a be equipped with the elastic component between I inboard of clamp and the inboard of clamp II, the elastic component is the spring, and the inside contact compactness of fastener and plum blossom contact is guaranteed effectively to the appropriate tension that can provide like this.

Drawings

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

Detailed Description

In fig. 1, the utility model provides an internal expanding wire clamp of a handcart switch loop resistance tester of a switch cabinet, which comprises a scissor type wire clamp body, wherein the scissor type wire clamp body comprises a clamp body I1 and a clamp body II 2, the clamp body I1 is arranged in a long strip shape, the clamp body II 2 is arranged in a long strip shape, the middle part of the clamp body I1 is rotatably connected with the middle part of the clamp body II 2, the middle part of the clamp body I1 of the embodiment is rotatably connected with the middle part of the clamp body II 2 through a rotating shaft, the clamp body I1 and the clamp body II 2 are crossed to form the scissor type wire clamp body, the end head at one side of the clamp body I1 is provided with a wire clamp contact I3, the wire clamp contact I3 is arranged in a horizontal direction and then is connected with the end head at one side of the clamp body I1, the wire clamp contact I3 is arranged to be a metal wire clamp contact, the wire clamp contact I3 is arranged in a long strip shape, the end head at one side of the clamp body II 2 is provided with a wire clamp II 4, the wire clamp contact 4 is arranged to be a metal contact wire clamp, fastener contact II 4 sets up to rectangular form, fastener contact II 4 is the end connection with clamp II 2 one side after the horizontal direction sets up, fastener contact I3 lies in same one side with fastener contact II 4, the opposite side of clamp I1 is connected with voltage wire 5, the opposite side of clamp II 2 is connected with current wire 6, voltage wire 5 lies in same one side with current wire 6, current wire 6 all is connected with test instrument with voltage wire 5, be equipped with the elastic component between the inboard of clamp I1 inboard and clamp II 2, the elastic component is spring 7, spring 7 vertically sets up between the inboard of clamp I1 inboard and clamp II 2, the one end of spring 7 is connected with clamp I1 inboard, the other end and the inboard of clamp II 2 of spring 7 are connected.

The utility model discloses a use does: when the clamp body I1 and the clamp body II 2 are unfolded, tension is generated between the clamp body I1 and the clamp body II 2, the clamp contact I3 and the clamp contact II 4 are in close contact with the inner wall of a switch cabinet handcart switch plum blossom contact after the clamp body I1 and the clamp body II 2 are unfolded, and the current lead 6 and the voltage lead 5 are connected with a test instrument and then used for collecting the current and voltage values of the test instrument.

Claims

1. An internal-expanding wire clamp of a handcart switch loop resistance tester of a switch cabinet is characterized by comprising a scissor type wire clamp body, wherein the scissor type wire clamp body comprises a clamp body I (1) and a clamp body II (2), the middle part of the clamp body I (1) is rotatably connected with the middle part of the clamp body II (2), the clamp body I (1) and the clamp body II (2) are connected in a cross way to form the scissor type wire clamp body, a wire clamp contact I (3) is arranged at the end head of one side of the clamp body I (1), a wire clamp contact II (4) is arranged at the end head of one side of the clamp body II (2), the wire clamp contact I (3) and the wire clamp contact II (4) are positioned at the same side, a voltage lead (5) is connected to the other side of the clamp body I (1), a current lead (6) is connected to the other side of the clamp body II (2), the voltage lead (5) and the current lead (6) are positioned at the same side, and the current lead (6) and the voltage lead (5) are both connected with a test instrument, after the clamp body I (1) and the clamp body II (2) are spread, the wire clamp contact I (3) and the wire clamp contact II (4) are in close contact with the inner wall of the plum blossom contact of the handcart switch of the switch cabinet.

2. The internal-expanding wire clamp of the switch cabinet handcart type switch loop resistance tester as claimed in claim 1, wherein the wire clamp contact I (3) is arranged in the horizontal direction and then connected with the end head on one side of the clamp body I (1).

3. The internal-expanding wire clamp of the switch cabinet handcart type switch loop resistance tester as claimed in claim 1, wherein the wire clamp contact II (4) is arranged in the horizontal direction and then connected with the end head on one side of the clamp body II (2).

4. The internal expanding wire clamp of the switch cabinet handcart type switch loop resistance tester according to claim 1 or 2, characterized in that the wire clamp contact I (3) is set to be a metal wire clamp contact, and the wire clamp contact I (3) is set to be a long strip.

5. The internal expanding wire clamp of the switch cabinet handcart type switch loop resistance tester according to claim 1 or 2, characterized in that the wire clamp contact II (4) is set to be a metal wire clamp contact, and the wire clamp contact II (4) is set to be a long strip.

6. The internal-expanding wire clamp of the switch cabinet handcart type switch loop resistance tester as claimed in claim 1, wherein an elastic member is arranged between the inner side of the clamp body I (1) and the inner side of the clamp body II (2).

7. The internal-expanding wire clamp of the switch cabinet handcart type switch loop resistance tester as claimed in claim 6, wherein the elastic member is a spring (7), the spring (7) is longitudinally arranged between the inner side of the clamp body I (1) and the inner side of the clamp body II (2), one end of the spring (7) is connected with the inner side of the clamp body I (1), the other end of the spring (7) is connected with the inner side of the clamp body II (2), and when the clamp body I (1) and the clamp body II (2) are opened, tension is generated between the clamp body I (1) and the clamp body II (2).

8. The internal-expanding wire clamp of the switch cabinet handcart-type switch loop resistance tester as claimed in claim 1, 2, 6 or 7, is characterized in that the clamp body I (1) is configured into a long strip shape.

9. The internal-expanding wire clamp of the switch cabinet handcart-type switch loop resistance tester as claimed in claim 1, 3, 6 or 7, wherein the clamp body II (2) is configured to be long.