CN200978682Y

CN200978682Y - Coal mining air shaft explosion-proof door locking device

Info

Publication number: CN200978682Y
Application number: CN 200520038151
Authority: CN
Inventors: 沙同庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-11-21
Anticipated expiration: 2015-12-31

Abstract

A coal mine air shaft explosion door load binder belongs to coal mine ventilation safe components, and the load blinder comprises a holddown spring, a tongue depressor, a lock pin, a tension haft, a electromagnet and other the like. When the haft (8) is tightened, the tongue depressor (2) drops back and holds down the tongue depressor spring (5), locks the lock pin (4), is plugged into a lock socket (7) in the action of elastic force of the lock spring (6). And when that time, once the haft (8) is loosed, the tongue depressor (2) leave the explosion door (9), and the explosion door freely covers explosion protected wellhead (10). When the electromagnet (3) is powered on, the electromagnetic attraction generated by the electromagnet (3) holds the lock pin (4) out from the lock socket (7) of the tongue depressor (2), the tongue depressor (2) is pulled out in the elastic force action of the tongue depressor spring (5), pressed on the explosion door (9) to make the explosion door (9) fixedly pressed on the air door of the explosion protected wellhead (10), then the electromotor is started reversely to provide reverse wind to mine.

Description

Explosion-proof door locking device for coal mine air-shaft

Technical field

The utility model relates to a kind of coalmine ventilation safety device.Belong to coal mine air-shaft explosion proof door fastening device.

Background technology

China's coal-mine ventilation majority is an exhaust ventilation at present, and ventilation system is a pull-out type.In order to prevent that the mine accident blast wave from destroying main ventilation fan, the explosion-proof well head on straight-through ground is set in ventilating shaft the place ahead.This well head covers well head with explosion proof door under the normal negative pressure ventilation condition, in case leak-stopping wind.In case blast in the down-hole, the blast impulse blast can be washed explosion proof door open, has so just prevented that shock wave from damaging main ventilation fan.Blast in the down-hole or breaking out of fire when producing pernicious gas and gushing out, need to carry out inverted ventilation sometimes, the malleation forced ventilation is changed in the negative pressure exhaust ventilation." safety regulations in coal mine " regulation: " the main ventilation fan of mine main must be equipped with the inverted ventilation facility, and can change the wind direction in the tunnel in 10min; " in the colliery inverted ventilation manoeuvre at present, the main operation of finding influence the inverted ventilation time is a foundary weight surplus the explosion proof door peripheral ten, must manually tighten the foundary weight nut.Only have under a driver's the situation at main ventilation fan, tighten the foundary weight nut with the ten minutes, stop main ventilation fan, start inverted ventilation then, be difficult to be implemented in inverted ventilation requirement in the rules stipulated time.Thereby influence disaster inverted ventilation rescue work, delay mine disaster rescue opportunity, cause the injury even the sacrifice of down-hole miner.

Summary of the invention

The purpose of this utility model provides a kind of locker that shakes control automatic locking coal mine air-shaft explosion proof door.The whole operations of this locker can in seconds be finished.Under the trouble-free prerequisite of ventilation fan itself, can in 10min or shorter time, realize inverted ventilation.Strive for valuable time for the rescue of down-hole disaster, dwindle the disaster influence, personnel are murdered in the minimizing down-hole.

The technical solution of the utility model is realized by the exploitation explosion-proof door locking device for coal mine air-shaft.Explosion-proof door locking device for coal mine air-shaft pedestal [1] is installed on explosion-proof well head [10] borehole wall of ventilating shaft explosion proof door [9] periphery.This locker is pressed tongue, is pressed tongue spring, latching electromagnet, lockweight and locking handgrip etc. to form by pedestal, explosion proof door.When the ventilation fan forward turns round, strain handgrip [8], contract after pressing tongue [2], and compress tongue spring [5], lockweight [4] inserts in the locking groove [7] of pressing tongue [2] under the elastic force effect of case spring [6], unclamps handgrip [8] this moment, press tongue [2] promptly to break away from explosion proof door [9], explosion proof door is in the state that freely covers on the explosion-proof well head [10].When blast in the down-hole, impact air can be washed explosion proof door open, discharges impact energy, prevents to impact ventilation fan and causes main ventilation fan to damage.When down-hole generation disaster needs inverted ventilation to rescue, after the ventilation driver receives the inverted ventilation order, promptly press the explosion-proof door locking device remote control buttons, the locker electromagnet is sent.At this moment electromagnet [3] energising, electromagnet [3] produces electromagnetic attraction lockweight [4] is extracted from the locking groove [7] of pressing tongue [2], press tongue [2] under the elastic force effect of pressing tongue spring [5], to be pushed out, be pressed on the explosion proof door [9], explosion proof door [9] is pressed on the explosion-proof well head air door [10] securely.After having prevented inverted ventilation, under the distinguished and admirable effect of ventilation fan malleation, back down explosion proof door and cause distinguished and admirable short circuit.Because this operation realized the electric control of shaking, avoided manually tightening the operation of foundary weight nut, won the time for rescuing the down-hole disaster personnel that are murdered, dwindled the influence of disaster.After disaster was rescued end, reversing air current of ventilator finished, and changes righteous style and practice into.This moment, the ventilation fan driver can press tongue [2] to retract locked position of coupler explosion proof door by operation tension handgrip [8], lockweight [4] is under case spring [6] elastic force effect, insert in the locking groove [7] on the explosion proof door pressure tongue, realize the locking of explosion proof door pressure tongue, explosion proof door is in free state.

Advantage of the present utility model is: adopt explosion-proof door locking device for coal mine air-shaft to realize the Remote Control Automatic of coal mine air-shaft explosion proof door compressed, solved because of manually tightening the foundary weight nut and compressed the problem that explosion proof door time length can not in time realize back lass, thereby win valuable rescue time, reduce the down-hole accident personnel that are murdered.

Description of drawings

Concrete structure of the present utility model is provided by following drawings and Examples.

Fig. 1 is that explosion-proof door locking device for coal mine air-shaft is arranged elevation

Fig. 2 is that explosion-proof door locking device for coal mine air-shaft is arranged vertical view;

Fig. 3 is the explosion-proof door locking device for coal mine air-shaft structure chart;

Fig. 4 is an explosion-proof door locking device for coal mine air-shaft locking action schematic diagram;

Fig. 5 is an explosion-proof door locking device for coal mine air-shaft unlocking action schematic diagram.

The 1-pedestal

2-presses tongue

3-locker electromagnet

The 4-lockweight

5-presses the tongue spring

The 6-case spring

The 7-locking groove

The 8-handgrip

The 9-explosion proof door

The explosion-proof well head of 10-

11-leakproof geomantic omen groove

12-explosion proof door bead

The specific embodiment

Describe in detail according to detail and the working condition that the utility model proposes below in conjunction with diagram.

Fig. 1,2 is depicted as this locker and is installed on the explosion-proof well head of ventilating shaft [10] borehole wall of ventilating shaft explosion proof door [9] periphery by pedestal [1].Explosion proof door [9] covers explosion-proof well head [10], and its bead [12] is inserted in the leakproof geomantic omen groove [11].When normally ventilating in the colliery, the free gland of explosion proof door is on well head, and locker will not compress explosion proof door.When blast in the down-hole, the blast impulse blast can be washed the explosion proof door release open, and the main ventilation fan of protection ventilating shaft is not by impact failure.When disasters such as down-hole breaking out of fire, gas, when being murdered personnel, need inverted ventilation sometimes in order to rescue the down-hole.Cause distinguished and admirable short circuit in order to prevent that ventilating shaft explosion proof door [9] from being opened by the distinguished and admirable drum of inverted ventilation, influence the inverted ventilation effect, explosion proof door [9] must be compressed.

Fig. 3,4 is depicted as when the ventilation fan driver receives the inverted ventilation order, pressing the remote control buttons of locker at once send locker electromagnet [3] coil, electromagnet generation electromagnetic attraction picks up lockweight [4] and deviates from from the locking groove [7] of pressing tongue [2], press tongue [2] under the compression elasticity effect of pressing tongue spring [5], stretch out and press tongue to be pressed on the ventilating shaft explosion proof door [9], locked explosion proof door [9], prevented that the distinguished and admirable drum of inverted ventilation from driving explosion proof door [9] and causing distinguished and admirable short circuit and influence the inverted ventilation effect.Thereby realized quick inverted ventilation, striven for valuable rescue time.

Figure 5 shows that when needing righteous style and practice after inverted ventilation finishes, can earlier main ventilation fan be fallen into forward and ventilate that the ventilation fan driver then can utilize the tension handgrip [8] of locker to draw back and press tongue [2]; When lockweight [4] the compressing under the elastic force effect of case spring, insert in the locking groove [7] of pressing tongue [2] after, press tongue [2] promptly to be locked and be pressed in the locker.Explosion proof door [9] has recovered freely to cover the state on the explosion-proof well head [10] again.

Claims

A kind of colliery wind and explosion-proof door locking device that is used for colliery disaster inverted ventilation use, it is characterized in that: be fixed on to be equipped with on the pedestal [1] on the explosion-proof well head of ventilating shaft [10] borehole wall and press tongue [2], press tongue [2] rear portion suit compression spring [5], press tongue [2] termination portion to connect handgrip [8] with the hinge form; Press tongue [2] to be carved with locking groove [7] above the front portion, the core and the lockweight [4] that are installed in the locker electromagnet [3] of pressing tongue [2] top are one, lockweight [4] bottom is with case spring [6], and lockweight head cross sectional shape is identical with locking groove, and can insert in the locking groove [7].