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Easy-to-maintain earthing device

A grounding device and easy-maintenance technology, which is applied in the direction of connection with the grounding device, can solve the problems of difficult disassembly and assembly of the grounding device, low production efficiency, and high repair costs, and achieve the effect of improving maintenance efficiency, improving efficiency, and reducing costs

Inactive Publication Date: 2016-12-21
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of difficult disassembly and assembly, low production efficiency and high repair cost of the existing grounding device, the present invention provides an easy-maintenance grounding device

Method used

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  • Easy-to-maintain earthing device
  • Easy-to-maintain earthing device
  • Easy-to-maintain earthing device

Examples

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Effect test

Embodiment Construction

[0013] The easy-maintenance grounding device includes two semicircular grounding rings 1 with opposite notches, connecting blocks 2 are provided at both ends of the semicircular grounding ring 1, and mutual interference fits are provided on the adjacent surfaces of two adjacent connecting blocks 2 The keyway 3 and the boss 4, and two adjacent connecting blocks 2 are provided with fastening bolts 5; the upper side of the semicircular grounding ring 1 is provided with a fixed rod 7 connected with the outer bearing cover 6, and the fixed rod 7 is provided with a semicircular The ground ring 1 contacts the brush assembly 8 .

[0014] During the specific implementation process, a gap of 0.01 mm is left at the docking part of the two semicircular grounding rings 1 to ensure that there is sufficient interference between the grounding ring and the rotating shaft after the fastening bolt 5 is fastened; the brush device 8 is composed of a brush box and Combination of grounding brushes.

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Abstract

The invention specifically discloses an easy-to-maintain earthing device and solves a problem that a conventional earthing device is difficult to disassemble and assemble, low in production efficiency and high in repairing cost. The easy-to-maintain earthing device comprises a semicircle earthing loop of which two notches are arranged opposite to each other, two ends of the semicircle earthing loop are provided with connecting blocks, adjacent faces of two adjacent connecting blocks are provided with key grooves and bosses that are in an interference fit relation with each other, the two adjacent connecting blocks are provided with fastening screw bolts, an upper side of the semicircle earthing loop is provided with a fixed rod connected with an outer bearing cap, and electric brush devices in contact with the semicircle earthing loop is arranged on the fixed rod, Via use of the easy-to-maintain earthing device, production efficiency can be improved while a defective rate can be lowsered, at least two groups of electric brushes can be accommodated, service life of the earthing device can be prolonged, performance of an electric motor can be improved, manufacture and maintenance cost can be lowered, earthing loop installation efficiency is doubled according to statistics, maintenance efficiency is improved by 80%, and cost of auxiliary equipment is lowered by 90%.

Description

technical field [0001] The invention relates to a grounding device for wind power generation, in particular to an easy-maintenance grounding device. Background technique [0002] As a kind of clean energy, wind power occupies an increasingly important position in my country's energy strategy. Among the many types of wind turbines, double-fed asynchronous wind turbines are simple in structure, reliable in operation, high in efficiency, and require less maintenance. Occupy an important share in the market. [0003] The life of the bearing is directly related to the quality of the wind turbine, how to reduce the impact of the shaft current on the bearing has always been a crucial issue. In structural design, insulating bearings and grounding devices are generally used to suppress the influence of shaft current. [0004] The traditional grounding device is composed of a grounding ring, a grounding brush and a brush holder. The grounding ring adopts an integral ring structure, a...

Claims

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Application Information

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IPC IPC(8): H02K11/40
Inventor 钟绍辉于秀丽段志强
Owner CRRC YONGJI ELECTRIC CO LTD
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