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A rolling contact assembly

A contact assembly and rolling technology, applied in the field of on-load tap-changer contact assemblies, can solve the problems of rapid wear and tear of the contact part of the contact, easy pollution of insulating transformer oil, large switch switching resistance, etc., and achieves long mechanical life, Production and maintenance are convenient, and the effect of prolonging the life of the machine

Active Publication Date: 2014-10-15
SHANGHAI HUAMING POWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of clip-type contact group structure results in high switching resistance of the switch, rapid wear of the contact part, short mechanical life, and the worn metal particles are also easy to contaminate the insulating transformer oil in the switch.

Method used

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  • A rolling contact assembly
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  • A rolling contact assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] see Figure 2 to Figure 5 , the rolling contact assembly shown in the figure includes a contact seat, which is composed of a support part 110 and two clamping parts 120, 120a, and the support part 110 and two clamping parts 120, 120a Made of conductive material. Two clamping grooves 111, 111a are provided in the supporting part 110 to accommodate the two clamping parts 120, 120a respectively. The components 120 and 120a rely on the fulcrum portion 112 to float up and down in a small range. A mounting part 113, 113a for mounting the supporting part on the tap changer component is respectively provided on both sides of the rear end of the supporting part 110, and a through hole 1131, 1131a is respectively opened on the mounting part 113, 113a, and a bolt (not shown in the figure) shown) to install the supporting part 110 on the tap changer component 200 through the through holes 1131, 1131a.

[0030] A bolt hole (not shown) is provided symmetrically on both sides of th...

Embodiment 2

[0036] see Figure 6 to Figure 8 , the rolling contact assembly shown in the figure includes a contact seat, which is composed of two sheet-shaped clamping parts 310, 310a, and the two sheet-shaped clamping parts 310, 310a are made of insulating materials ; Of course, the two sheet-shaped clamping parts 310, 310a can also be made of conductive materials. If it is made of conductive material, electrical contact surfaces 311, 311a are provided at the rear ends of the two sheet-shaped clamping parts 310, 310a, and the electrical contact surfaces 311, 311a contact the contacting conductors to connect the current. In this embodiment, the two sheet-shaped clamping parts 310 and 310a are made of insulating materials, and one of the sheet-shaped clamping parts 310 is provided with a connection terminal lead-out hole 312 .

[0037] A bolt hole 313, 314 and a bolt hole 313a, 314a are respectively provided at the upper and lower positions of the two sheet-shaped clamping parts 310, 310a...

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PUM

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Abstract

The invention discloses a rolling type contact assembly, which comprises a contact seat and a pair of contact rods arranged on the contact seat. The rolling type contact assembly is characterized in that a first end of each contact rod is provided with a rolling wheel contact in a shafting way, the rolling wheel contacts can rotate around respective contact rods, and the pair of contact rods applies the clamping force through a spring component arranged at the second ends of the contact rods corresponding to the first ends. Compared with the prior art, the rolling type contact assembly has the following obvious advantages that 1, the rolling friction is realized during the action between the rolling wheel contact and a contacted contact, and the mechanical service life of the contacts can be effectively prolonged; 2, the structure is simple and compact, the production and the maintenance are convenient, and the production cost is reduced; and 3, the shape of a spring is simple, the processing production is easy, and the mechanical service life is long.

Description

Technical field: [0001] The invention relates to the technical field of on-load tap changer contact assemblies, in particular to a rolling contact assembly. Background technique: [0002] Moving contacts used in traditional on-load tap-changers, such as figure 1 As shown, it is a clip-type contact group. The clip-type contact group is composed of upper and lower two chip contacts 1, 1a, and the connected contact 2 is clamped in the middle, and the upper and lower The two leaf contacts 1, 1a rely on springs 3, 3a to exert clamping force respectively. This clip-type contact group structure results in greater switch switching resistance, faster wear of the contact part, shorter mechanical life, and worn metal particles are also likely to contaminate the insulating transformer oil in the switch. Invention content: [0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art, and propose a rolling contac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/56
Inventor 肖日明
Owner SHANGHAI HUAMING POWER EQUIP CO LTD