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Rigid mechanical interlocking device of up-down type medium-voltage dual-power cabinet

An interlocking device and dual power supply technology, applied in switchgear, pull-out switchgear, switchgear components, etc., can solve the problems of too long size chain, low reliability of interlocking function, difficult installation and debugging, etc. , to achieve the effect of saving installation, high reliability and compact device structure

Pending Publication Date: 2022-07-01
GUIZHOU TAIYONG CHANGZHENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the industry, whether it is Schneider or ABB (Assi Brown Boveri), before installing two handcart medium voltage switches into the medium voltage dual power supply cabinet, the mechanical interlocking is mostly done outside the cabinet. After the mechanism is fixedly installed between the two handcart-type medium voltage switches, the two switches with the mechanical interlock mechanism installed are inserted into the medium voltage dual power supply cabinet. Lock, affected by Young's modulus of tension, or too long dimensional chain, resulting in low reliability of interlock function, and difficult installation and debugging

Method used

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  • Rigid mechanical interlocking device of up-down type medium-voltage dual-power cabinet
  • Rigid mechanical interlocking device of up-down type medium-voltage dual-power cabinet
  • Rigid mechanical interlocking device of up-down type medium-voltage dual-power cabinet

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Experimental program
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Effect test

Embodiment 1

[0029] like Figure 1-3 The rigid mechanical interlocking device of the upper and lower type medium-voltage double power supply cabinets of the present invention includes two medium-voltage switches arranged up and down and can be inserted into or withdrawn from the medium-voltage double power supply cabinets, namely switch one 1 and switch two 2 ( Switch one 1 is located above switch two 2, and can be freely inserted into or withdrawn from the medium-voltage double power supply cabinet); it also includes an interlocking mechanism installed inside the medium-voltage double power supply cabinet, and the interlocking mechanism includes an interlocking mechanism installed in the medium-voltage double power supply cabinet. A bracket assembly 5 on the inner side wall (right side wall) of the cabinet, and an interlocking rod 1 3 and an interlocking rod 2 4 which are vertically installed on the bracket assembly 5 and can move up and down.

[0030] like figure 1 As shown, the switch ...

Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 is:

[0049] In another structure of the present invention, the first cantilever 302, the second cantilever 301, the third cantilever 402, the fourth cantilever 401, the first swing arm 101, the second swing arm 102, the third swing arm 202, and the fourth swing arm 201 are all in-line. The board body, that is, after the switch 1 and switch 2 are inserted into the medium voltage dual power supply cabinet, the upper edge of the swing arm 101 is directly overlapped with the lower edge of the cantilever 1 302, and the lower edge of the swing arm 202 is directly connected with the upper edge of the cantilever 2 301. In the overlap connection, the lower edge of the swing arm 102 is directly overlapped with the upper edge of the cantilever arm 3 402 , and the upper edge of the swing arm 4 201 is directly overlapped with the lower edge of the cantilever arm 401 .

Embodiment 3

[0051] The difference between this embodiment and Embodiments 1 and 2 is that:

[0052] An anti-gravity spring 403 for supporting the second interlocking rod 4 is sleeved on the upper end of the second interlocking rod 4; The upper end of the second rod 4), the lower end is supported on the mounting plate 502 of the uppermost plate body of the bracket assembly 5, and is used to bear the weight of the second interlocking rod 4 in the vertical direction (so that it will not move down excessively and pass its own gravity) Push the swing arm 4 201 to rotate downward).

[0053] Because the length and weight of the interlocking rod 1 3 are lower than those of the interlocking rod 2 4, its gravity is not enough to push the swing arm 101 to rotate downward, but the upper end of the interlocking rod 1 can also be sleeved to support the interlocking rod 1 3 anti-gravity springs.

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Abstract

The invention provides a rigid mechanical interlocking device of an up-down type medium-voltage dual-power cabinet. The rigid mechanical interlocking device comprises a first switch, a second switch and an interlocking mechanism. A main shaft and a tripping rod are arranged in each of the first switch and the second switch; the interlocking mechanism comprises a support assembly installed on the inner side wall of the medium-voltage dual-power cabinet, and a first interlocking rod and a second interlocking rod which are vertically installed on the support assembly and can move up and down. The switch I and the switch II are respectively inserted into the medium-voltage dual-power cabinet; the two ends of the first interlocking rod are in lap joint and mechanical interlocking with a main shaft of the first switch and a tripping rod of the second switch respectively. The two ends of the second interlocking rod are in lap joint and mechanical interlocking with the tripping rod of the first switch and the main shaft of the second switch respectively. The medium-voltage switch interlocking device is compact in structure and high in reliability, since an interlocking mechanism does not need to be connected between the two medium-voltage switches before the medium-voltage switches are inserted into the cabinet body, the medium-voltage switches can be automatically interlocked only by pushing the medium-voltage switches into the cabinet in sequence during installation, installation is convenient, and installation and debugging time and labor cost can be greatly saved.

Description

technical field [0001] The invention belongs to the technical field of medium voltage electrical appliances, and in particular relates to a rigid mechanical interlocking device of an upper and lower type medium voltage double power supply cabinet. Background technique [0002] At present, in the industry, whether it is Schneider or ABB (Acibram Boffari), before installing two handcart-type medium voltage switches into the medium voltage dual power supply cabinet, they usually interlock the machinery outside the cabinet first. After the mechanism is fixedly installed between the two handcart-type medium-voltage switches, insert the two switches with the mechanical interlocking mechanism installed into the medium-voltage dual power supply cabinet. The lock is affected by Young's pull-up modulus, or the dimension chain is too long, resulting in low reliability of the interlock function and difficult installation and debugging. SUMMARY OF THE INVENTION [0003] In order to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B11/133H02B11/167H02B11/02
CPCH02B11/133H02B11/167H02B11/02
Inventor 冯科让贺贵兵田小勇梁琨琨
Owner GUIZHOU TAIYONG CHANGZHENG TECH CO LTD
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