CN2113342U - Gas blast device operated by three person for mining - Google Patents

Abstract

The utility model relates to a gas blast device operated by three people for mining, which is composed of a direct current power supply, a high voltage oscillating circuit, a detonating device and an explosion-proof enclosure, etc. Three keys to the three gas blast devices are separately held by a blasting person, a job foreman and a fire viewer, and the keys can only be turned in the same direction. The three persons must be present simultaneously and operate in order, otherwise, the detonation can not begin, so that the gas and dust explosion accident due to the negligence of one blasting person is avoided. The utility model with easy producing and operation is best suitable to the blasting for underground coal mining, and the utility model is also suitable to the detonation operation of other industries.

Description

Gas blast device operated by three person for mining

The utility model is the instrument that detonates that mining blasting is used.

What the work of blowing out of down-hole mining work plane was used for a long time all is the exploder that the person's of blowing out one man operation is detonated, at gas exceeding limit, under the situation that coal dust content is high or top newspaper supporting is not good, one man operation is detonated and is very easily caused gas, serious accidents such as coal-dust explosion and top board subside, the accident that is produced by the one man operation blaster as can be known from the summary of " coal mining accident case " accounts for very big ratio, in order clearly to have stipulated " the three people system of blowing out " in the generation " safety regulations in coal mine " of stopping this class accident, that is: " person of blowing out when blowing out; class monitor and group leader; the fireboss should be at the scene ", but often because of can not well carrying out " the three people system of blowing out " gas takes place still in practice, serious accidents such as coal-dust explosion and top board subside.

In order to ensure downhole safety production, stop the person of blowing out, class monitor and group leader, not in place the causing the accident of fireboss and designed a kind of novel mining with three people's exploders.

Mining is made up of dc source, high-voltage oscillation circuit, priming device, explosion-resistant enclosure etc. with three people's exploders.

Power supply is composed in series by No. 5 1.2V chromium nickel charge type batteries of 4 joints; Priming device is made up of ms switch, locator, operation key etc.

Figure one is the front view and the sectional view of ms switch, and drawing is described as follows:

1---the ms switch driving shaft.

2---the key centre bore.

3---the key positioner hole.

4---the shelves reed.

5---spring.

6---driving wheel.

7---driving block.

8---the triangle locating ring.

9---the contact power transmission shaft.

10---Insulating frame.(three layers of upper, middle and lowers)

11---movable contact.

12---break.

Figure two is that front view, mansion view, sectional view, the drawing of locator is described as follows:

13---Y type locating hole.

14---the V-type positioning table.

15---the flame proof copper sheathing.

Figure three is front view and vertical views of operation key, and drawing is described as follows:

16---the isolator handle.

17---key body.

18---positioning head.

19---key bit.

As follows with the description of three people's exploders below in conjunction with accompanying drawing to mining:

Main rotary shaft 1 is a garden post metallic object, one is drilled with centre bore is key hole 2, it is key positioner hole 3 that shape hole, an ellipse garden is arranged above the jack 2, final drive shaft 1 other end is equipped with grade reed 4, spring 5 and driving wheel 6, two statures of spring 5 are stumbled on the ratchet of axle head driving wheel 6, driving wheel 6 is salient angle eccentric wheels, and the spindle nose of final drive shaft is exposed at the outside of driving wheel 6.

Driving block 7 is rectangular salient angle sheets, and there is an oblong aperture at the center, and respectively there is a unguiculus on two long limits, block two spring heads on the final drive shaft 1 respectively.

Triangle locating ring 8 is garden rings made from metal sheet, and there are three locating slots in interior garden, and four fixing holes are arranged on the plane, is installed in the last plane of middle part Insulating frame 10.

Contact power transmission shaft 9 is T font edge bodies, be inserted in the centre bore of middle part Insulating frame 10, with the match rotation of control movable contact of movable contact 11 on the Insulating frame of bottom, break 12 is contacts of six not parallel installations, three contacts are at the lower plane of middle part Insulating frame, three contact planes on the Insulating frame of bottom are fixed in the contact holddown groove on the framework, work hard in glove with separately loop by movable contact 11.

Locator is and explosion-resistant enclosure convex Cylinder cast in block, there are the location slotted hole 3 corresponding Y type locating holes 13 with the final drive shaft 1 of ms switch at its center, the equidistant arrangement size of three slotted holes of locating hole is the same, angle between each hole is 110 °～120 °, the top of locating hole 13 is a V-shape positioning table 14, align with a slotted hole of Y type locating hole in the center of V-shape positioning table, the opening angle of V-shape positioning table is 120 °～150 °.

Key is by insulated handle 16, key body 17 is formed, insulated handle 16 is the shape of swallow-wing shape or other various operations that are easy to carry, key body 17 parts are embedded in the handle and are encased insulation by handle, all the other are exposed at outside the handle, the short part of the key body that exposes is positioning head 18, and the key bit 19 that long part is 19, three keys of key bit respectively differs 110 °～120 ° with the angle of positioning head 18.

The final drive shaft 1 of ms switch is contained in the explosion-resistant enclosure flame proof copper sheathing 15, and the locating hole 3 on final drive shaft 1 top is corresponding with the center of the Y type locating hole 13 of locator.

First operation key inserts in the hole in locator Y type hole, clockwise rotates the final drive shaft that makes ms switch and drives movable contact and rotate, and when key positioner 18 was withstood with V-type positioning table 14, this moment, connecting point position was in neutral gear.Remove first key; insert second key; still doing up time rotates; when key positioner 18 is withstood by V-type positioning table 14 again; the connecting point position of ms switch inside goes to charge position by neutral gear; this moment, circuit was connected; to the main capacitance charging, remove second key, insert the 3rd key; after treating that neon lamp on the shell provides charging and shows; carry out up time rotation immediately, the interior contacts of ms switch is gone to by the charging shelves and blows out the position, carries out moment and blows out; when on the key positioning head 18 is positioned platform 14 when withstanding, the position of the switch just in time is in discharge position to the circuit protection of releasing.

Three keys of three people's exploders are grasped and can only be clockwise rotated and can not rotate counterclockwise by the person of blowing out, class monitor and group leader, fireboss respectively, three people must operate on the scene simultaneously and in order, otherwise can not detonate, thereby avoid the three people accident that causes not in place.

Owing to adopted chromium nickel charge type battery, dwindled the volume of power supply and shell, alleviated complete machine weight, improved the ignition quality, reduced power supply expense and the scene of being convenient to and used and carry.

Claims (4)

1, a kind of mining of being made up of explosion-resistant enclosure, dc source, high-voltage oscillation circuit, priming device etc. is with three people's exploders, it is characterized in that: No. five 1.2 volts of chromium nickel charge type batteries of four joints are composed in series power supply, and its priming device is made up of ms switch, locator, operation key.Ms switch is by final drive shaft, compositions such as bakelite Insulating frame, movable contact, break; Final drive shaft is a garden post metallic object, one is drilled with centre bore is key hole, it is the key positioner hole that a slotted eye is arranged above the centre bore, the final drive shaft other end is equipped with a grade reed, spring, driving wheel, two statures of spring are stumbled on the ratchet of axle head driving wheel, driving wheel is a salient angle eccentric wheel, and the spindle nose of final drive shaft is exposed at the driving wheel outside; Driving block is a rectangular salient angle sheet, and there is an oblong aperture at the center, and respectively there is a unguiculus on two long limits, block two spring heads on the final drive shaft respectively; The triangle locating ring is the annulus made from metal sheet, and interior circle has three locating slots, and four fixing holes are arranged on the plane, is installed in the last plane of middle part Insulating frame; The contact power transmission shaft is a T font isolator, the centre bore movable contact interior and that the bottom Insulating frame is interior that is inserted in the middle part Insulating frame matches and controls the rotation of movable contact, break is the contact of six not parallel installations, three contacts are at the lower plane of middle part Insulating frame, three contact planes on the Insulating frame of bottom, be fixed in the contact holddown groove on the framework, work hard in glove with separately loop by movable contact.

Locator is and explosion-resistant enclosure convex cylinder cast in block, its center has a final drive shaft with ms switch to locate the corresponding Y type of slotted hole locating hole, the equidistant arrangement size of three slotted holes of locating hole is the same, angle between each hole is the same, the top of locating hole is the V-shape positioning table, aligns with a slotted hole of Y type locating hole in the center of V-shape positioning table.

Key is made up of insulated handle, key body, insulated handle is swallow-wing shape or other various shapes that are easy to carry, operate, a key body part is embedded in the handle and is encased insulation by handle, all the other are exposed at outside the handle, the short part of the key body that exposes is positioning head, long part is a key bit, and the key bit of three keys and the angle of positioning head respectively differ 110 °～120 °.

The final drive shaft of ms switch is contained in the explosion-resistant enclosure flame proof copper sheathing, and the locating hole on final drive shaft top is corresponding with the center of the Y type locating hole of locator.

2, as the said mining of claim 1 with three people's exploders, it is characterized in that: three key turns by 1,2,3, order inserts respectively in the locator Y type hole and rotates by an equidirectional.

3, as the said mining of claim 1 with three people's exploders, it is characterized in that: angle is 110 °～120 ° between three slotted holes of the locating hole of locator.

4, as the said mining of claim 1 with three people's exploders, " it is characterized in that: the opening angle of the V-shape positioning table of locator is 120 °～150 °.

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