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Bar-shaped no-excitation tap switch with gear positioning

A tap changer, bar-shaped technology, used in transformers, electrical components, variable inductors, etc., can solve the problem of contact burnout, incomplete operation of moving contacts, and inability to ensure accurate rack displacement. In place and other problems, to achieve the effect of strong feel and avoid contact burn

Active Publication Date: 2011-08-31
DANDONG JINLI POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the errors in parts processing and assembly, the displacement of the rack and the moving contact cannot be guaranteed to be in place when the handle is rotated, and it is impossible to know whether it is in place. ACCIDENT

Method used

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  • Bar-shaped no-excitation tap switch with gear positioning
  • Bar-shaped no-excitation tap switch with gear positioning
  • Bar-shaped no-excitation tap switch with gear positioning

Examples

Experimental program
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Embodiment Construction

[0010] see figure 2 , which includes a handle 1, a drive shaft 2 and a bracket 3, the drive shaft is coaxial with the drive gear 4, the drive gear is meshed with the rack 5, and a blind hole is set on the bracket 3, and springs 6 are sequentially installed in the blind hole from inside to outside and the positioning bead 7; the positioning gear 8 is coaxial with the drive shaft 2, and said coaxial means that the shaft of the positioning gear is rigidly connected with the two shafts of the drive shaft, or the drive shaft is also the shaft of the positioning gear. In this embodiment, the drive shaft simultaneously As the driving gear 4 shafts and the positioning gear 8 shafts, and the positioning gear 8 is on the top and the driving gear 4 is on the bottom, the two are integrated structures. see image 3 The so-called positioning gear means that the teeth are wave-shaped. When there is no external force, the positioning beads fall into the trough of the positioning gear and ar...

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PUM

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Abstract

The invention provides a bar-shaped no-excitation tap switch with gear positioning, wherein the technical problem to be solved is as follows: accidents such as burn-out of contact terminals and the like are caused because errors exist in the processing and assembling of spare parts, whether the offset of a rack bar and a moving contact terminal are in places accurately or not cannot be ensured when a handle is rotated, neither to know whether in places or not, and the operation of the moving contact terminal is easy to be not in place. The scheme of the invention is as follows: a blind hole is arranged on a bracket; a spring and a positioning ball are sequentially arranged in the blind hole from inside to outside; a positioning gear is coaxial with a drive shaft; the positioning gear is provided with wavy teeth; the positioning ball falls into the wave trough of the positioning gear and then positioned when no external force exists; and the distance between two adjacent wave troughs of the positioning gear corresponds to the contact terminal of the switch. The bar-shaped no-excitation tap switch with the gear positioning has the beneficial effects that whether the moving contact terminal is in place or not can be ensured when the handle is rotated; and in addition, the hand feeling is strong, thus the accidents such as burn-out of the contact terminals and the like caused by not-in-place operation of the moving contact terminal can be avoided.

Description

technical field [0001] The invention relates to a bar-shaped non-excitation tap changer, in particular to a bar-shaped non-excitation tap changer with a gear position positioning mechanism. Background technique [0002] The strip off-excitation tap changer is a tap changing device for transformer windings, that is, setting taps at different parts of the transformer windings, changing the position of the taps, and changing the number of turns of the transformer winding, so as to achieve voltage fluctuations caused by load changes. The voltage regulation function stabilizes the grid voltage. The bar tap-changers currently used are, (see figure 1 ) A positioning handle 1 is arranged on the upper part, the lower part of the handle is connected to the drive shaft 2, the drive shaft is coaxial with the drive gear 4, the drive gear meshes with the rack 5, and several moving contacts are arranged on the rack. By rotating the handle, the drive shaft, drive gear, rack and moving con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/04H01H21/50H01H3/40
Inventor 于红栾大利赵悦欣
Owner DANDONG JINLI POWER EQUIP
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