CN201315354Y

CN201315354Y - Grounding wire clamp at gap bridge bus conducting wire end

Info

Publication number: CN201315354Y
Application number: CNU2008201497115U
Authority: CN
Inventors: 张志宏; 李航; 白金峰; 贾伟; 汤乐
Original assignee: ZHENGZHOU XIANGYU SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd; Zhengzhou Power Supply Co of Henan Electric Power Co
Current assignee: ZHENGZHOU XIANGYU SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd; Zhengzhou Power Supply Co of Henan Electric Power Co
Priority date: 2008-10-14
Filing date: 2008-10-14
Publication date: 2009-09-23
Anticipated expiration: 2018-10-14

Abstract

The utility model discloses a grounding wire clamp at a gap bridge bus conducting wire end, which is mainly formed by a mechanical spring feeding screw chunk, an L-shaped wire clamp base, a hook head and an uplifting tool tooth. The mechanical spring feeding screw chunk is helically inserted below the L-shaped wire clamp base by a metal bar helix; the uplifting tool tooth is arranged at the top end of a metal bar; the upper end of the L-shaped wire clamp base is connected with the hook head; and the uplifting tool tooth moves up and down, tightly retracts or looses in the space formed by the L-shaped wire clamp base and the hook head. The grounding wire clamp can be conveniently connected to an insulted rod; tightening force is vertically transferred by a rotating handle, so the needed strength is smaller; the uplifting tool tooth can be adjusted up and down, so the application range is wide; the adopted combined structure is convenient to disassemble and assemble as well as carry; and grounding wires of the gap bridge can be quickly mounted without using any climbing tool, thereby shortening the time, reducing personal injury accidents, and improving the reliability of electricity supply.

Description

Gap bridge bus conductor termination ground clamp

Technical field:

The utility model relates to the power system security process units, particularly is used for 40MVA and above capacity main transformer low-pressure side (6kV-35kV) gap bridge bus place safe connection equipment.

Background technology:

Along with the domestic economy develop rapidly, electric power terminal user's load increases sharply, and the single transformer installed capacity of transmission ﹠ distribution transformer station significantly improves.With 110kV transformer station is example, and China's separate unit main transformer capacity has been brought up to the capacity of 50MVA or 60MVA by the 31.5MVA in past at present.Because the increase of separate unit main transformer capacity, low-pressure side gap bridge bus (6kV, 10kV, 35kV) has all adopted two copper bar wiring, and bus copper bar thickness has up and down reached 35mm.Simultaneously, main transformer low pressure has reached 3500mm apart from the datum level height.When main transformer overhauls, ground wire is installed when installing at low pressure gap bridge bus place, usually need be by the instrument of climbing to a higher point such as stool, ladder, climb to a higher point and often surpass apart from 1.5 meters of datum levels, and bundle safety belt nowhere, directly violated the regulation of " State Grid Corporation of China's electric power safety working regulation " the 13.6th.In the type of existing conductor wire end ground connection folder: 1,, therefore can not satisfy the requirement that bus row installs thickness because wire clamp is dehisced manyly between 35Vmm-40mm up and down; 2, the wire clamp mounting means must just can be finished by ascend operation, has increased potential safety hazard; 3, wire clamp can not limit the scope of application according to bus row's size regulated at will.

The utility model content:

Technical problem to be solved in the utility model provides a kind of gap bridge bus conductor termination ground clamp at above deficiency exactly, this earthing clamp folder mouth is suitably regulated according to the bus width, needn't ascend a height during construction, fabricated structure, easy to install, reduce life injures and deaths thing, improved the power supply reliability of electric power enterprise.

Technical solution adopted in the utility model is:

A kind of gap bridge bus conductor termination ground clamp, mainly by mechanically silk spiral dop, L molded lines folder base, eave tile and last top instrument tooth constitute, mechanically silk spiral dop by the metal bar cross-under below L molded lines folder base, the top of metal bar is provided with top instrument tooth, L molded lines folder base upper end is connected with eave tile, and last top instrument tooth moves up and down, tightens or unclamp in the space of L molded lines folder base and eave tile formation.

The cross-under of metal bar screw thread is beneficial to top instrument tooth and moves up and down on L molded lines folder base, to tighten or to unclamp bus-bar.

L molded lines folder base upper end has threaded post, and threaded post is cross-under eave tile, fixture block successively, and threaded post top and fixture block clamp nut spin, and are beneficial to dismounting and carry.

Has adjustment hole on the eave tile, to regulate the flexible length of eave tile.

Head end on the eave tile has kink, is beneficial to tighten bus-bar.

L molded lines folder base has fixture, ground wire can be fixed on the L molded lines folder base by nut.

Mechanically have metallic pin on the silk spiral dop, can realize assembling and chucking with insulating rod.

Mechanically silk spiral dop, L molded lines folder base, eave tile, fixture block and last top instrument tooth are cast by aluminum alloy materials, and smooth surface is smooth, are beneficial to busbar combination firmly, and top and bottom create conditions and ground connection is good in order further to screw.

The beneficial effect that the utility model can reach is:

1, the utility model can be connected on the insulating rod easily, and fastening force is vertically uploaded by rotating handles, and required strength is less; Eave tile length is adjustable and instrument tooth adjustable up and down the utility model that makes in last top is arranged applicable to the hard metal gap bridge bus of different-thickness and width.

2, the utility model uses simply, need not use any instrument of climbing to a higher point promptly to finish the installment work of gap bridge bus ground wire fast, has shortened the time.

3, the utility model fabricated structure, easy accessibility and being easy to carry, cost of manufacture is cheap, is easy to produce applied range in batches.

Description of drawings:

Fig. 1 is the utility model structural representation.

Fig. 2 is the vertical view of the eave tile among Fig. 1.

Embodiment:

The utility model will be further described below in conjunction with accompanying drawing:

As shown in Figure 1 and Figure 2, this gap bridge bus conductor termination ground clamp, mainly by mechanically silk spiral dop 1, L molded lines folder base 6, eave tile 10, fixture block 9 and last top instrument tooth 4 constitute, mechanically silk spiral dop 1 is connected on L molded lines folder base 6 belows by having externally threaded metal bar 3 coils, the top of metal bar 3 is provided with top instrument tooth 4, L molded lines folder base 6 upper ends are connected with eave tile 10, and last top instrument tooth 4 moves up and down, tightens or unclamp in the space that L molded lines folder base 6 and eave tile 10 constitute; L molded lines folder base 6 upper ends have threaded post 7, threaded post 7 cross-under successively has the eave tile 10 and the fixture block 9 of adjustment hole 11, threaded post 7 tops and fixture block clamp nut 8 spin, being beneficial to dismounting carries, head end on the eave tile 10 has kink, L molded lines folder base 6 has fixture 5, mechanically has metallic pin 2 on the silk spiral dop 1, can realize assembling and chucking with insulating rod.

During use, at first the ground wire that copper stranded conductor (conductor cross-section must not less than 25 square millimeters) is made is fixed on L molded lines folder base 6 by diplopore line nose with dish shape nut and has on the fixture 5, silk spiral dop 1 on the rotating machinery, make the folder mouth increase to suitable position gradually, the deck of insulating rod is socketed in mechanically on the silk spiral dop 1, and mechanically the metallic pin 2 on the silk spiral dop 1 aligns with the screens hole on the insulating rod deck, choose to bus row by insulating rod then and locate, last top instrument tooth 4 is aimed at the bus horizontal row to stinging tight bus row with the folder mouth between the eave tile 10, rotating insulated rod drives mechanically silk spiral dop 1, by silk spiral dop 1 on the rotating machinery folder mouth between top instrument tooth 4 and the eave tile 10 is dwindled gradually, cause whole folder mouth to sting tight bus row, reach the ground wire on the long-range installation gap bridge bus row, last counter-rotating insulating rod, screens hole on the insulating rod is separated with the metallic pin 2 of silk spiral dop 1 mechanically, and the process that so far whole gap bridge bus row installs ground wire is finished.

Claims

1, a kind of gap bridge bus conductor termination ground clamp, mainly by mechanically silk spiral dop, L molded lines folder base, eave tile and last top instrument tooth constitute, it is characterized in that: mechanically silk spiral dop by the metal bar cross-under below L molded lines folder base, the top of metal bar is provided with top instrument tooth, L molded lines folder base upper end is connected with eave tile, and last top instrument tooth moves up and down, tightens or unclamp in the space of L molded lines folder base and eave tile formation.

2, gap bridge bus conductor termination ground clamp as claimed in claim 1 is characterized in that: the cross-under of metal bar screw thread is pressed from both sides on L molded lines folder base.

3, gap bridge bus conductor termination ground clamp as claimed in claim 1 or 2 is characterized in that: L molded lines folder base upper end has threaded post, and threaded post is cross-under eave tile, fixture block successively, and threaded post top and fixture block clamp nut spin.

4, gap bridge bus conductor termination ground clamp as claimed in claim 3 is characterized in that: have adjustment hole on the eave tile, to regulate the flexible length of eave tile.

5, gap bridge bus conductor termination ground clamp as claimed in claim 3, it is characterized in that: the head end on the eave tile has kink, is beneficial to tighten bus-bar.

6, gap bridge bus conductor termination ground clamp as claimed in claim 3 is characterized in that: L molded lines folder base has fixture.

7, gap bridge bus conductor termination ground clamp as claimed in claim 3 is characterized in that: mechanically have metallic pin on the silk spiral dop.

8, gap bridge bus conductor termination ground clamp as claimed in claim 3 is characterized in that: mechanically silk spiral dop, L molded lines folder base, eave tile, fixture block and last top instrument tooth are made by aluminum alloy materials.