CN217538255U

CN217538255U - Explosion-proof frequency converter safety door lock mechanism

Info

Publication number: CN217538255U
Application number: CN202221578276.4U
Authority: CN
Inventors: 梁国际; 王顺乘; 刘甲; 杜莉; 张福贵
Original assignee: Jiaozuo Huachen Electronic Technology Co ltd
Current assignee: Jiaozuo Huachen Electronic Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-10-04
Anticipated expiration: 2032-06-22

Abstract

The utility model belongs to mining converter production field, concretely relates to explosion-proof converter emergency exit latch mechanism, the emergency exit of connecting including explosion-proof shell and quick door opening mechanism, explosion-proof shell and emergency exit cooperation are equipped with latched device, latched device includes fixed hasp and movable lock catch, be equipped with electronic unlocking mechanism in the explosion-proof shell, the cooperation is equipped with the response mechanism that opens the door on the flame proof face of explosion-proof shell and emergency exit, the response mechanism that opens the door is including touching board and response box, be provided with micro-gap switch in the response box and promote the piece, it switches the hole to be equipped with in the middle of the promotion piece, switch downthehole switching cam that is equipped with, it is equipped with the key slot to switch the cam, be provided with the control panel in the explosion-proof shell, the explosion-proof shell outside is provided with the alarm, be provided with operating panel on the emergency exit. This emergency exit lock mechanism has improved the safety protection level of explosion-proof converter, can effectively prevent to open the condition emergence of explosion-proof shell emergency exit in violation of rules and regulations of colliery safety control work can be promoted.

Description

Explosion-proof frequency converter safety door lock mechanism

Technical Field

The utility model belongs to mining converter production field, concretely relates to explosion-proof converter emergency exit latch mechanism.

Background

Because the mine possibly contains inflammable and explosive factors such as gas, coal dust and the like in a special working environment of a coal mine, the mining frequency converter generally requires an explosion-proof frequency converter, the explosion-proof frequency converter is an adopted explosion-proof shell, the explosion-proof shell is provided with a safety door in a matching way, and the electric equipment in the explosion-proof shell has the possibility of sparking in the working process, so the safety door of the explosion-proof shell cannot be opened randomly without permission, and the safety door is generally provided with a safety lock for preventing people from opening the safety door illegally. However, most of the existing explosion-proof shell safety doors are opened and closed by adopting a mechanical handle opening and closing mode, and the safety locks are also opened and closed by adopting simple mechanical keys, so that the safety locks are easy to crack and the illegal door opening behaviors are not easy to discover, and certain loopholes exist in the safety management work of coal mines.

SUMMERY OF THE UTILITY MODEL

In order to the above situation, the utility model discloses an explosion-proof frequency converter emergency exit latch mechanism has improved the safety protection grade of explosion-proof frequency converter, can effectively prevent that the condition of opening the explosion-proof shell emergency exit from violation takes place.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an explosion-proof converter emergency exit lock mechanism, includes explosion-proof shell and the open emergency exit of side, is provided with flame proof face one and flame proof face two on the faying face of emergency exit and explosion-proof shell respectively, explosion-proof shell and emergency exit keep away from one side cooperation of quick door opening mechanism and are provided with the latched device, the latched device is including setting up the fixed hasp on flame proof face one and setting up the activity hasp on flame proof face two, is provided with the electronic unlocking mechanism who is used for driving the activity hasp in the explosion-proof shell, and the cooperation is provided with the response mechanism that opens the door on flame proof face one and the flame proof face two that are close to latched device one side, the response mechanism that opens the door is including setting up the touch panel on flame proof face one and setting up the response box on flame proof face two, be provided with micro-gap switch in the response box and be used for touching micro-gap switch's promotion piece, promotion piece stretches out the response box telescopically towards the one end of touch panel, and the other end is provided with the expanding spring, is provided with the guide bar in the middle of expanding spring, has offered the switching hole in the promotion piece, switching cam that is provided with the switching cam that is used for unblanking and locking the switching of the switch is connected with the response box rotation through camshaft, and the key hole, and is provided with the key panel, and is provided with the operation panel, and is provided with the key panel on the emergency exit, the panel, be provided with the control panel, be provided with the key panel, be provided with the operating panel, the operating panel is provided with the key panel, the alarm panel.

Furthermore, one side of the safety door is rotatably connected with the explosion-proof shell through a quick door opening mechanism. The quick-opening mechanism can be, for example, the quick-opening mechanism disclosed in CN203398980U, which is a common prior art for the explosion-proof housing of the frequency converter and is not described herein again.

Furthermore, a track groove is formed in the second explosion-proof surface, and the movable lock catch is slidably arranged in the track groove. The rail groove is preferably a T-shaped rail groove, and the joint surface of the movable lock catch and the rail groove is provided with a T-shaped rail clamping block in a sliding fit mode.

Furthermore, the electric unlocking mechanism is an electric telescopic rod, the acting end of the electric telescopic rod is connected with the movable lock catch, and the telescopic action of the electric telescopic rod can drive the movable lock catch to move up and down, so that the movable lock catch and the fixed lock catch are opened and closed.

Furthermore, the alarm is a mine intrinsic safety type audible and visual alarm, has the characteristic of intrinsic safety, accords with the MA safety certification of a coal mine, and is safe and reliable.

Furthermore, an opening button, a closing button and a reset button for controlling the electric unlocking mechanism are arranged on the operation panel.

The utility model discloses still including other subassemblies that can make its normal use, be the conventional means in this field, in addition, the utility model discloses in add the device or the subassembly of injecing, for example: the control system settings of the explosion-proof shell, the safety door, the operation panel and the control panel and the like all adopt the prior art in the field.

The beneficial effects of the utility model are as follows:

the utility model provides a pair of explosion-proof frequency converter emergency exit latch mechanism through electronic unlocking mechanism and the auto-lock and the alarming function setting of response mechanism that open the door, has improved the safety protection grade of explosion-proof frequency converter greatly, can effectively prevent that the condition of opening explosion-proof shell emergency exit from violation from taking place, is favorable to promoting the standardization of coal mine production security and safety control work.

Drawings

FIG. 1 is a schematic structural diagram of a safety door lock mechanism of an explosion-proof frequency converter in the embodiment.

Fig. 2 is a schematic view of the opening sensing mechanism in fig. 1 in a state where the safety door is normally locked.

Fig. 3 is a schematic view of the opening sensing mechanism in fig. 1 in a state when the safety door is normally opened.

Fig. 4 is a schematic view illustrating the state of the opening sensing mechanism in fig. 1 when the safety door is abnormally opened.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely below with reference to specific embodiments, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples

As shown in fig. 1-4, an explosion-proof frequency converter safety door lock mechanism comprises an explosion-proof shell 1 and a side-open safety door 2, wherein a first explosion-proof surface 3 and a second explosion-proof surface 4 are respectively arranged on a combination surface of the safety door and the explosion-proof shell, a locking mechanism is cooperatively arranged on one side of the explosion-proof shell and one side of the safety door far away from a quick door opening mechanism, the locking mechanism comprises a fixed lock catch 5 arranged on the first explosion-proof surface and a movable lock catch 6 arranged on the second explosion-proof surface, an electric unlocking mechanism 7 for driving the movable lock catch is arranged in the explosion-proof shell, a door opening sensing mechanism is cooperatively arranged on the first explosion-proof surface and the second explosion-proof surface close to one side of the locking mechanism, the door opening sensing mechanism comprises a triggering plate 8 arranged on the first explosion-proof surface and a sensing box 9 arranged on the second explosion-proof surface, the anti-explosion safety door is characterized in that a micro switch 10 and a pushing block 11 used for touching the micro switch are arranged in the induction box, the pushing block telescopically extends out of the induction box towards one end of the touch plate, an expansion spring 12 is arranged at the other end of the induction box, a guide rod 13 is arranged in the middle of the expansion spring, a switching hole 14 is formed in the middle of the pushing block, a switching cam 15 used for releasing and locking the pushing block is arranged in the switching hole, the switching cam is rotatably connected with the induction box through a cam shaft, a key groove 16 is formed in the outer end of the cam shaft, a key hole is correspondingly formed in the side wall of the anti-explosion shell, the key hole is linearly communicated with the key groove, a control panel 17 is arranged in the anti-explosion shell, an alarm 18 is arranged on the outer side of the anti-explosion shell, an operation panel 19 is arranged on the safety door, and the micro switch, the alarm, the electric unlocking mechanism and the operation panel are all electrically connected with the control panel.

One side of the safety door is rotatably connected with the explosion-proof shell through a quick door opening mechanism 20.

And a track groove 21 is formed in the explosion-proof surface II, and the movable lock catch is slidably arranged in the track groove. The rail groove is a T-shaped rail groove, and a T-shaped rail clamping block is arranged on the joint surface of the movable lock catch and the rail groove in a sliding fit mode.

Electric unlocking mechanism is electric telescopic handle, and electric telescopic handle's effect end is connected with movable lock catch, and electric telescopic handle flexible action can drive movable lock catch elevating movement, realizes that movable lock catch and fixed hasp open and shut.

The alarm is a mine intrinsic safety type audible and visual alarm, and accords with the MA safety certification of the coal mine.

And the operating panel is provided with a button for controlling the opening, closing and resetting of the electric unlocking mechanism.

The utility model discloses an action principle as follows:

after the safety door is normally closed, the switching cam is rotated to a state of releasing the switching hole by using a special star-shaped key, and the touch plate presses the lower push block, so that the normally open contact of the microswitch is switched on, the normally closed contact is switched off, and the electric unlocking mechanism can normally control the movable lock catch to lift through the opening and closing buttons to open or lock the safety door; when the safety door needs to be opened normally, a star-shaped key needs to be taken through examination and approval, the switching cam is firstly rotated to a state of resisting the switching hole, so that the microswitch cannot bounce, at the moment, a normally open contact of the microswitch is switched on, a normally closed contact is switched off, the electric unlocking mechanism can be powered on, and the movable lock catch is normally controlled to lift through the opening and closing button, so that the safety door is opened or locked; when the safety door is opened abnormally, the switching hole is in a releasing state, once the safety door has an opening gap, the touch plate is loosened to trigger the action of the microswitch, the normally open contact of the microswitch is disconnected, the normally closed contact is closed, the electric unlocking mechanism can be interlocked and self-locked, at the moment, the movable lock catch cannot be controlled to lift through the opening button and the closing button, the safety door cannot be opened, meanwhile, the alarm gives out sound and light alarm to prompt warning attention, only the star-shaped key is examined and approved normally to be taken, the switching cam is rotated to a state of resisting the switching hole, the reset button is pressed to eliminate the alarm, the normally open contact of the microswitch is connected, the normally closed contact is disconnected, the electric unlocking mechanism can be in a state of normally controlling the lifting state of the movable lock catch through the opening button and the closing button again, and the safety door can be opened or locked normally.

The technical solution of the present invention is not limited to the limitations of the above-described embodiments, and many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. The utility model provides an explosion-proof converter emergency exit lock mechanism, includes explosion-proof shell and the emergency exit of side open-type, emergency exit one side is provided with flame proof face one and flame proof face two, its characterized in that through mechanism and explosion-proof shell rotatable coupling of opening the door soon on the faying face of emergency exit and explosion-proof shell respectively: the explosion-proof shell and the safety door are provided with a locking mechanism in a matching manner at one side far away from the quick door opening mechanism, the locking mechanism comprises a fixed lock catch arranged on a first explosion-proof surface and a movable lock catch arranged on a second explosion-proof surface, an electric unlocking mechanism used for driving the movable lock catch is arranged in the explosion-proof shell, a door opening sensing mechanism is arranged in a matching manner on the first explosion-proof surface and the second explosion-proof surface close to one side of the locking mechanism, the door opening sensing mechanism comprises a touch plate arranged on the first explosion-proof surface and a sensing box arranged on the second explosion-proof surface, a micro switch and a push block used for touching the micro switch are arranged in the sensing box, the push block can telescopically extend out of the sensing box towards one end of the touch plate, the other end of the push block is provided with a telescopic spring, a guide rod is arranged in the middle of the telescopic spring, a switching hole is formed in the middle of the push block, a switching cam used for releasing and locking the push block is arranged in the switching hole, the switching cam is rotatably connected with the sensing box through a cam shaft, a key slot is arranged at the outer end of the cam shaft, a key slot is correspondingly arranged on the side wall of the explosion-proof shell, the key hole is linearly communicated with the key slot, a control panel is arranged in the explosion-proof shell, and is electrically connected with the control panel.

2. The explosion-proof frequency converter safety door lock mechanism according to claim 1, characterized in that: and a track groove is formed in the explosion-proof surface II, and the movable lock catch is arranged in the track groove in a sliding manner.

3. The explosion-proof frequency converter safety door lock mechanism according to claim 1, characterized in that: the electric unlocking mechanism is an electric telescopic rod, and the action end of the electric telescopic rod is connected with the movable lock catch.

4. The explosion-proof frequency converter safety door lock mechanism according to claim 1, characterized in that: the alarm is an intrinsic safety type audible and visual alarm for mines.

5. The explosion-proof frequency converter safety door lock mechanism according to claim 1, characterized in that: and the operating panel is provided with a button for controlling the opening, closing and resetting of the electric unlocking mechanism.