Frequency converter flameproof housing having door lock

A technology of frequency converter and casing, applied in the field of frequency converter flameproof casing, can solve the problem of lack of opening or closing of the cavity door, and achieve the effect of avoiding safety accidents

Inactive Publication Date: 2012-05-02
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a frequency converter flameproof housing with a door lock to solve the

Method used

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  • Frequency converter flameproof housing having door lock
  • Frequency converter flameproof housing having door lock
  • Frequency converter flameproof housing having door lock

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Embodiment Construction

[0026] In order to clearly illustrate the technical solutions in the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings.

[0027] see figure 1 , the frequency converter flameproof housing with door lock in the preferred embodiment of the present invention includes: a chamber door 1 and a door lock are installed on the housing;

[0028] see figure 2 , the door lock includes: a reversing handle 10 installed on the housing for switching the working state of the frequency converter. One end of the reversing handle 10 is cylindrical, and the center of the cylindrical end is fixed on the housing through a rotating shaft. There is a locking clip on the circumference of the end;

[0029] A support is fixedly installed on the shell, and a lock tongue that is movably connected with the support is installed on the support;

[0030] The reversing handle 10 is rotated to the connected state of the f...

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PUM

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Abstract

The invention discloses a flameproof housing of a frequency converter, wherein the flameproof housing has a door lock. The flameproof housing comprises a housing, a cavity door and a door lock, wherein the cavity door and the door lock are installed in the housing. The door lock includes a reversing handle that is installed on the housing and is used for changing a working state of a frequency converter; the reversing handle is fixed on the housing by a spindle and is provided with a locker. A support is fixedly installed on the housing; a lock tongue that is movably connected with the support is installed on the support. When the reversing handle is rotated to a disconnected position of the frequency converter, the lock tongue is opposite to the locker position that is opened on the reversing handle. According to the invention, the flameproof housing has a simple structure; further, only when a reversing handle is rotated to a disconnected position of a frequency converter can a cavity door be opened; a working state of the reversing handle is fixed by a door lock, so that a function of safe opening or closing of the cavity door is realized and thus personal safety of construction personnel on the site can be ensured.

Description

technical field [0001] The invention relates to a case of a frequency converter, in particular to a flameproof case of a frequency converter with a door lock. Background technique [0002] Coal mines are filled with a large amount of flammable and explosive gas, which are prone to explosion under conditions such as high temperature and ignition point. Mine frequency converters use a layer of housing to isolate the frequency converter from the outside, the purpose of which is to prevent the gas outside from being ignited when the frequency converter explodes. A door lock is installed on the flameproof shell of the mining frequency converter, which is used to control the opening and closing of the chamber door on the flameproof shell. According to the national standard GB3836 and coal mine safety supervision regulations, there must be a door lock on the chamber door of the flameproof housing of the mine flameproof frequency converter. [0003] The door lock should make the r...

Claims

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Application Information

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IPC IPC(8): H02M1/00E05C19/00
Inventor 王峰黄小光苏位峰卫三民苟锐锋李侠周京华
Owner CHINA XD ELECTRIC CO LTD
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