CN201149822Y

CN201149822Y - Mechanism for rapidly opening and locking door

Info

Publication number: CN201149822Y
Application number: CNU2007201026396U
Authority: CN
Inventors: 张义堂; 关力; 普鲁克; 申化波; 陆秀花
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-11
Filing date: 2007-10-11
Publication date: 2008-11-12
Anticipated expiration: 2017-10-11

Abstract

The utility model discloses a rapid door-opening and locking mechanism, which belongs to the coal mine equipment. Two segment of racks are respectively fixed on and under the contact part between the inner wall of the door flange and the shell body to ensure that the minimum clearance between a main cavity door and a main cavity is 0.1 and the maximum clearance is 0.25, so that the door can be opened flexibly and the clearance of a flameproof surface space is also less than the national standards and needs no adjustment so as to save time and effort; a locking shaft is arranged in the wall of a closed part at the front face of the shell body, so that an operating handle of a flameproof switch can be locked and can not be operated when the door is open; the flameproof switch can be operated only when the front and back doors are closed.

Description

A kind of quick operating valve and blocking mechanism

Technical field:

The utility model belongs to coal mine equipment, relates in particular to a kind of quick operating valve and blocking mechanism that is matched in the mine flameproof and intrinsic safety type load center low-pressure side unit switch that uses under the coal mine.

Background technology:

Along with improving constantly of mining level, increasing big-and-middle-sized colliery begins to adopt to combine adopts or combines the coal-mining method of putting, and along with the modernization level of mining is more and more higher, coal excavation apparatus power is also increasing, so coal mine user is more and more stricter to the requirement of coal mining power supply unit.The present flame-proof mine load center that uses has just overcome the deficiency that discrete type power supply unit in the past exists.At the flame-proof type load center, the low-pressure side unit switch is adopted and the starting switch of two height working face various devices as combining, owing to can export the operating voltage of different brackets simultaneously, and when breaking down, equipment can cut off the electricity supply automatically, in servicely can show each branch current value and other running parameters, be very important parts therefore.Because environment of living in is comparatively complicated under the coal mine, usually contains the damp of methane and coal dust mixture in the air, so the dustproof and anti-explosion of this equipment is required strictness especially, the unlatching of low-pressure side unit switch and the requirement of using necessary match operation rules.

The shell of low-pressure side unit switch is made up of door flange and housing, opens the door before and after the housing, and the sealing of housing front portion, detent position is distributed with the switching manipulation handle.Environment of living in has determined door flange and housing must have explosion-proof, antiknock, characteristics such as dustproof under the coal mine.At present, the door flange of the low-pressure side unit switch that use the down-hole adopts quick opening mechanism, its advantage is to open the door fast, be convenient to maintenance, shortcoming is that the flame proof gap be difficult for to guarantee, its quick opening structure is when guaranteeing flatness, adjusts the flame proof gap by manual type, assembling during labour cost like this, effort, production efficiency reduces greatly.

Summary of the invention:

The purpose of this utility model has provided a kind of quick operating valve and blocking mechanism, can realize the door flange of unlatching fast and locking mine flameproof and intrinsic safety type load center low-pressure side unit switch, and, guarantee under door opening state, the operator of explosion-proof switch can not be operated by locking; Only under the situation that the front and back door shuts, could operate, simultaneously, guarantee to meet the flame proof gap that requires in the GB explosion-proof switch.

The purpose of this utility model is achieved in that

The utility model is divided into quick opening mechanism and two parts of blocking mechanism;

Described quick opening mechanism is made up of parts such as latch shaft, tooth bar, rotating shaft, card article, pressing plates; Described blocking mechanism is made up of parts such as interlock plate, couple axle, hooks;

Door flange in the utility model is connected on the positive sealing of the housing position by rotating shaft, is fixed with a pincerlike bayonet socket on the rotating shaft, and the bayonet socket stage casing is circular arc;

The latch shaft of described quick opening mechanism is fixed in the wall at the positive sealing of housing position, and latch shaft is made up of ring bush and column lock core, and lock core is positioned at lining, and the keyhole of lock core is interior hexagon, can rotate relative to lining; The latch shaft lining is concordant with inner walls, and stretches out one section of outer wall, and the both sides of latch shaft lining exposed parts are planar structure, and remainder is an arc structure; Lock core is positioned at the part of housing and stretches out one section of inwall, and it is concordant with lining to be positioned at the outer part of housing;

With the contacted part of housing frame, respectively be fixed with one section tooth bar up and down on the inwall of door flange, on the corresponding housing frame in tooth bar installation site, have teeth groove, after the door flange was closed, tooth bar can enter along the teeth groove on the housing in the housing;

Following on following on the housing frame and door flange, a groove is respectively arranged, all be fixed with card article in the groove;

Each fixes a strip plate on the right side of the left side of door flange and housing;

On the latch shaft lock core of housing inner chamber, be fixed with a connecting plate, these connecting plate two ends respectively are connected with interlock plate, and an interlock plate connects the couple axle at control back door, and another interlock plate connects the handle of control isolating switch;

Above-mentioned control back door couple axle is a transverse axis, the direct-connected back door from the Qianmen, and its terminal vertical fixing one hook, the arc shaped hook of hook afterbody and the cylindrical pin on the back door match.

Beneficial effect: adopt said structure, tooth bar has guaranteed can be with door flange face and housing tension, the pressured plate in two sides, the left and right sides is strained flange, the flame proof gap guarantees that by card article the minimum clearance that can guarantee main chambeies and main chamber is 0.1, and the maximal clearance is 0.25, can guarantee to open the door flexibly, the explosion suppresion surface gap is also less than request of national standard, and do not need to regulate the flame proof gap again, and is time saving and energy saving.Blocking mechanism has guaranteed that under the state that opens the door, the operator of explosion-proof switch can not be operated by locking; Only under the situation that the front and back door shuts, could operate explosion-proof switch.

Description of drawings:

Described in detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model housing Facad structure sketch;

Fig. 2 is the structure diagram of the utility model door flange;

Fig. 3 is the structure diagram of the utility model Qianmen blocking mechanism;

Fig. 4 is the structure diagram of the utility model back door blocking mechanism;

Fig. 5 is the hook and the fit structure sketch of pin in the blocking mechanism of back door.

Embodiment:

As shown in the figure: door flange 16 is connected on the housing 1 by rotating shaft 17, is fixed with a pincerlike bayonet socket 9 on the rotating shaft 17, and the stage casing of pincerlike bayonet socket 9 is circular arc;

Latch shaft 4 is fixed on the housing, and latch shaft 4 is made up of ring bush 18 and column lock core 15, and column lock core 15 is positioned at ring bush 18, and the outer wall bilateral symmetry of ring bush 18 is planar structure, and remainder is an arc structure;

On the latch shaft lock core 15 of housing inner chamber, be fixed with a connecting plate 8, these connecting plate 8 two ends respectively be hinged interlock plate 10 and interlock plate 18, interlock plate 10 is hinged the couple axle 12 at control back door, couple axle 12 is a transverse axis, directs at the back door from the Qianmen, other end vertical fixing one hook 13 of couple axle 12, the arc shaped hook of linking up with 13 afterbodys can hook the cylindrical pin 14 that is fixed on the back door

Another interlock plate 18 is hinged control operation plate 11, and big aperture can be controlled handle 5 rotations of isolating switch on the operation panel 11.

Inwall at door flange 16 respectively is fixed with one section tooth bar 7 up and down, and the teeth groove 2 of respective number is also arranged on the housing frame; Respectively be fixed with a pressing plate 3 in the left side of door flange 16 and the right side of housing 1;

And following on following on housing 1 frame and door flange 16, a groove is respectively arranged, all be fixed with card article 6 in the groove;

During use, if off switch door, to push behind the teeth groove 2 on the 7 aligning housings of the tooth bar on the door flange 16,1 frame, spur door handle then, door flange 16 is to rotating shaft 17 1 side displacements, at this moment, pincerlike bayonet socket 9 chucking latch shaft 8 on the door flange 16, use special-purpose inner hexagon spanner that lock core 15 is rotated 90 °, the arcwall face of latch shaft lining 18 and the arc-shaped surface in pincerlike bayonet socket 9 stage casings are matched, guarantee that door flange 16 can not be opened.

Meanwhile, latch shaft 8 also drives interlock plate 10, interlock plate 18 rotates, corresponding couple axle 12 also rotates together, the rotation result is: the operator of explosion-proof switch can carry out normal breaking-closing operating to 5, simultaneously, couple axle 12 drives hook 13 rotations in rotation, hook 13 cylindrical pin of blocking on the back door 14, the back door is locked.

When needs open the door, first: all operating handles are opened to horizontal level (separating brake position), second: then clockwise with latch shaft 8 half-twists, at this moment latch shaft 8 will drive above-mentioned interlock plate and couple axle rotates together.The rotation result is: interlock plate 11 stuck, can not be operated operator, and couple axle 12 drives hook 13 rotations in rotation, throws off with the straight pin 14 on the back door.Like this, the front and back door just can be opened safely.

Claims

1, a kind of quick operating valve and blocking mechanism is characterized in that: the door flange is connected on the shell flange by rotating shaft, is fixed with a pincerlike bayonet socket on the rotating shaft, and the bayonet socket stage casing is circular arc;

The latch shaft of described quick opening mechanism is fixed on the shell flange, and latch shaft is made up of ring bush and column lock core, and lock core is positioned at lining, the keyhole of lock core is interior hexagon, can rotate relative to lining, the outer wall bilateral symmetry of latch shaft lining is planar structure, and remainder is an arc structure;

With the corresponding position of shell flange frame, go up the next one section tooth bar that is fixed with on the inwall of door flange, the teeth groove on semicircle tooth and the shell flange frame coincide;

At the left side of door flange and the respectively intentionally individual card article pressing plate in right side of shell flange;

On the latch shaft lock core of the inner chamber of shell flange, be fixed with a connecting plate, these connecting plate two ends respectively are connected with interlock plate, and an interlock plate connects the couple axle at control back door, and another interlock plate connects the handle of control isolating switch;

Other end vertical fixing one hook of above-mentioned control back door couple axle, the arc shaped hook of hook afterbody and the cylindrical pin on the back door match.