Vacuum circuit breaker force reducing device

A technology for vacuum circuit breakers and vacuum tubes, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., and can solve problems such as reduced service life of equipment, difficulty in replacing switchgear components, and large force of reset springs.

Active Publication Date: 2017-12-22
JIANGXI TUOWANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A vacuum circuit breaker usually includes a bracket, a vacuum tube and a switchgear. The vacuum tubes are erected side by side on the bracket. The vacuum tube is provided with a connecting rod for opening and closing the vacuum tube. The connecting rod moves into the vacuum tube to make the vacuum tube close and conduct. The movement of the vacuum tube makes the vacuum tube open and disconnected. Generally, the connecting rod is equipped with a reset spring for resetting the connecting rod to the position of the vacuum tube open. The switch cabinet is equipped with a permanent magnet operation box or a mechanical operation box. The drive mechanism It usually includes driving parts, which are connected with the permanent magnet control box or the output shaft of the mechanical operation box. However, in the opening and closing operation of the vacuum circuit breaker, especially in the process of opening and resetting, in order to ensure the reset, the reset pull The force of the spring is usually large, which makes the transmission structure parts in the permanent magnet operation box or mechanical operation box easy to wear and reduce the service life, and there are many parts in the permanent magnet operation box or mechanical operation box, and the whole is more complicated , when subjected to the impact of opening and reset, it is easy to damage the internal parts and reduce the service life of the equipment, and it is difficult to replace the parts in the switchgear, and the replacement after damage is cumbersome, which affects the use efficiency of the equipment

Method used

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  • Vacuum circuit breaker force reducing device

Examples

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Effect test

Embodiment 1

[0018] Embodiment one: by figure 1 , figure 2It can be seen that the present invention discloses an embodiment of a force reducing device for a vacuum circuit breaker, which includes a bracket 1, several vacuum tubes and a driving mechanism for driving the vacuum tubes to open and close. The vacuum tubes are arranged on the bracket 1 at intervals, The vacuum tubes are respectively provided with connecting rods 21 for opening and closing the vacuum tubes. The connecting rods 21 are sleeved with a reset spring 22 for resetting the connecting rods 21 to the opening position of the vacuum tubes. The driving mechanism includes a drive Part 3, crank arm 42 and transmission rod 41, the drive member 3 is connected to the transmission rod 41, the crank arm 42 is hingedly arranged on the bracket 1 and connected to the transmission rod 41, and the crank arm 42 is also connected to There is a main shaft 43 for driving the opening and closing of the vacuum tube, and the main shaft 43 is ...

Embodiment 2

[0019] Embodiment two: by image 3 , Figure 4 It can be seen that the present invention discloses another embodiment of a force reducing device for a vacuum circuit breaker, which includes a bracket 1, several vacuum tubes and a driving mechanism for driving the vacuum tubes to open and close. The vacuum tubes are arranged on the bracket 1 at intervals The vacuum tubes are respectively provided with connecting rods 21 for opening and closing the vacuum tubes, and the connecting rods 21 are sleeved with a reset spring 22 for resetting the connecting rods 21 to the opening position of the vacuum tubes. The driving mechanism includes The drive member 3, the crank arm 42, the transmission rod 41 and the transmission group for driving the crank arm 42 to rotate, the drive member 3 includes a permanent magnet operation box 31 and a mechanical operation box 32, and the drive rod includes a first drive rod 52 and the second drive rod 53, the permanent magnet operation box 31 is conn...

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Abstract

The invention discloses a vacuum circuit breaker force reducing device, which comprises a support, vacuum tubes and a driving mechanism. The vacuum tubes are arranged on the support at intervals; and each vacuum tube is provided with a connecting rod. The driving mechanism comprises a driving member, a crank and a drive rod. The driving member is in drive connection with the drive rod; the crank is in drive connection with the drive rod; the crank is also connected with a main shaft; the main shaft is slidably arranged on the support; the main shaft is provided with a lower swing arm and an upper swing arm; and one end of the lower swing arm is hinged with the main shaft through a first hinge shaft, and the other end thereof is hinged with the support. The support is provided with a first slide groove in the place corresponding to the lower swing arm; each connecting rod is in same-direction arrangement with the first slide groove; and one end of the upper swing arm is connected with the connecting rod and is slidably arranged in the first slide groove along the first slide groove, and the other end is hinged to the main shaft through the first hinge shaft. The device reduces wear of parts in a switch cabinet in opening-closing operation of a vacuum tube, and prolongs the overall service life of the device.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a force reducing device in an opening and closing structure of a vacuum circuit breaker. Background technique [0002] Vacuum circuit breaker is named for its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing. The application is more popular. A vacuum circuit breaker usually includes a bracket, a vacuum tube and a switchgear. The vacuum tubes are erected side by side on the bracket. The vacuum tube is provided with a connecting rod for opening and closing the vacuum tube. The connecting rod moves into the vacuum tube to make the vacuum tube close and conduct. The movement of the vacuum tube makes the vacuum tube open and disconnected. Generally, the connecting rod is equipped ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666
CPCH01H33/666
Inventor 虞旭海
Owner JIANGXI TUOWANG ELECTRIC
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