Protective gate of underground mine working

FIELD: mining.

SUBSTANCE: gate includes double-leaf bed installed in box and longitudinal and transverse bed movement mechanisms. Elastic seals are arranged in closed position of gate between box and front surface of bed, as well as on rear surface of bed. Simultaneous pressure of bed leaves to box is performed with external support fixed in the wall of underground mine working.

EFFECT: higher strength of double-leaf bed of gate and higher sealing reliability of underground mine working.

7 cl, 3 dwg

 

The invention relates to mining and underground construction and can be used in the manufacture and installation of devices for blocking underground workings, such as the station of the subway tunnel in order to protect people and equipment against the damaging effects of air shock waves and prevent penetration into the protected space of pollutants and aggressive environment.

Devices of this kind is subject to strict requirements in terms of size and placement in extremely limited storage space underground workings, as well as in terms of reliability of protective elements.

Known protective shutter underground structures, containing a box with hinges attached to the hinges of the box can be rotated in a horizontal plane hard cloth placed between the sheet and the outer surface of the box the seal of elastic material, the mechanism of rotation of the blade and locking mechanism with a complex hand drive. In this arrangement, the fabric interacts with the box through a single seal only on the front (working) surface of the box (see, for example, Building a catalog SC-11, No. 1, ed. JSC "Center of design products in construction", Moscow, 2008, s).

The main disadvantage of such a gate is narrow the scope and insecurity of its application because of the impossibility of complete removal of the bulky design of the rotary blade of the employed people extremely limited space underground tunnels.

Closest to the proposed invention to the technical essence and the achieved result from the point of view of liberation scarce working space in an underground working is a known shutter underground tunnels with side cameras, made in the form of a shaft door and contains fixedly mounted on the perimeter of the opening of the underground workings box with work surfaces, double canvas, mounted by means of guide rails in an underground working, with the possibility of placing each of the valves in the respective side chamber, and mechanism for lateral movement of the sash of the canvas relative to the longitudinal axis of the underground workings (see, for example, USSR author's certificate No. 127223, CL 5d, 201, published. in BI No. 7 for 1960).

The main disadvantage of the second of the above known technical solution is low functional reliability is made on the basis of the shutter from the point of view of protection against external influence on underground structure such factors as, for example, a powerful shock wave from the explosion or natural disaster, followed by admission into the workings harmful to the health of people and equipment aggressive water or chemically contaminated environment. This disadvantage is due to lack of design shutter tech the ski means to isolate the protected area with sealing gaps and locking the blade in the ground floor of the underground workings, and there are paintings of two unconnected halves perceiving shock separately.

Object of the present invention is to provide a protective shutter underground workings devoid of the above disadvantages of the known closures and providing new technical result, namely guarantee reliable isolation of the protected zone underground development by means of the bolt with double-leaf sliding leaf from the simultaneous impact of a shock wave and an aggressive environment, dangerous to life and health of people and equipment. This result is achieved by the reliable sealing of all gaps between the leaf and the frame and at the joint area between the wings of the protective cloth shutter with simultaneous strengthening two-leaf paintings and automatic pressing it to the box with locking relative to the underground tunnels.

The problem is solved in that the protective shutter underground tunnels with side cameras, including fixed on the perimeter of the opening of the underground workings box with work surfaces, double canvas, mounted by means of guide rails in an underground working, with the possibility of placing each of the valves in the respective side chamber, and mechanism of transverse p the motion of the valves double cloth relative to the longitudinal axis of the underground workings, there is a mechanism for pressing the valves double cloth to the box and elastic seals, one of which is made annular and is installed between the working surface of the box and the front surface of the double cloth in close position of the valves, and the other elastic seal is made in the form of a strip mounted vertically behind the rear surface of the double cloth with the possibility of overlap between its leaves, and the pressing mechanism of the valves double cloth to the box with one end connected with leaves, and the other end is mounted for cooperation with a stop fixed in a recess made in the wall of the underground tunnels across the working surface of the box. In one embodiment of the shutter of the present invention the annular elastic seal is made solid and secured to the working surface of the box. In another embodiment, the annular elastic seal can be made of two half-rings, each of which is fixed on the front surface of the corresponding leaf double-leaf paintings. A resilient seal in the form of a strip may have a rectangular or T-shaped cross-section and be secured to the rear surface of one of the doors by means of a rigid vertical plate. In site Cetelem embodiment of the invention, the pressing mechanism of the valves double cloth to the box contains the Electromechanical drive of the motor, fixedly mounted on a rigid vertical rod, worm gearbox, two Central rods connected at one end with a worm gear, two pairs of lateral rods, pivotally connected at one end through a pair of corresponding Central thrust, and a spring-loaded rod that is installed against the stop plate and pivotally connected with the free end thrust of the respective pairs of rods.

The essence of the invention and its advantages over the known technical solutions will become more clear and apparent from the following detailed description of example with reference to the accompanying drawings, which schematically:

Figure 1 - General view in vertical longitudinal section of the protective shutter, made according to the present invention.

Figure 2 is a view along arrow a in figure 1 (from the area of external influence on underground construction).

Figure 3 is a view in cross section b-B of figure 1, illustrating the elements of sealing gaps in the protective shutter of the present invention.

In the described example of the invention, the protective shutter is installed in an underground working in the tunnel with concrete lining 1. In the ground floor of the tunnel 1 on the perimeter of its opening is mounted box 2 with the working surface 3, are made of elements of the mortgage Pulkovo what about the steel profile. The back of the box 3, i.e. in the protected zone of the tunnel 1, performed cross-development 4 (3) on the left 5 and right 6 the side chambers (figure 2). The top and bottom of the tunnel generation made niche 7 and 8 with the rear support walls, respectively 9 and 10, vypolnennymi over the steel embedded in the lining of the tunnel 1 in front of the box 2.

In a cross-development 4 fixed the guide rails 11 and 12, which is installed with double canvas 13 mechanism 14 lateral movement of the valves 15 and 16 relative to the longitudinal axis of the tunnel 1. Left 15 and right 16 sash double cloth 13 is installed with the possibility of accommodation in the respective side chamber 5 or 6, and in front of the box 2 in their close position.

Between the box 2 and double leaf blade 13 in close position of the valves 15 and 16 posted by annular elastic seal 17, made of heat-resistant reinforced rubber. As shown in figure 1, the seal 17 is made in the form of solid rings, mounted on the working surface 3 of the box 2. In another embodiment, the elastic seal 17 may be made in the form of two half-rings attached on the front surface 18 of the respective valves 15 and 16 double cloth 13 (not shown).

The rear surface of the double blade 13 posted by another (Ni is sustained fashion elastic seal 19, made in the form of strips (figure 1 - rectangular cross-section), installed vertically overlapping the joint between the wings 15 and 16 in their close position. The seal 19 is secured in position on the left wing, 15 double-leaf paintings by rigid vertical strap 20. In another embodiment, the present invention further seal 19 has a T-shaped cross-section and partially placed between the wings 15 and 16 (figure 3 of the drawings).

According to the present invention, the protective shutter is equipped with mechanism for simultaneously pressing the valves 15 and 16 double cloth 13 to the working surface 3 of the box 2. In the described example, this mechanism includes an Electromechanical actuator of the kinematically connected to the motor 21, a worm gear 22, the two Central rods 23, two pairs of side rods 24 with an earring 25, spring-loaded relative to the blade 13 of the rod 26 and the stops 27, fastened to the supporting walls 9 and 10 in the recesses 7 and 8 of the tunnel 1. At one end of the mechanism simultaneously pressing the valves 15 and 16 to the box 2, namely, the motor 21 is fixedly mounted on a rigid vertical rod 20 and at the other end of the spring relative to the double cloth 13, the rod 26 is set in the off position with a gap relative to the lugs 27.

Work is izgotovlenie of the present invention and mounted in an underground working of the protective shutter is as follows.

In the absence of the threat of external influences on the subject of protection of the underground construction of the shutter is always open when placing the valves 15 and 16 double-leaf paintings in the respective side chambers 5 and 6 of the tunnel 1.

In the situation, causing the need to use the protection of people and equipment in an underground working (for example, before carrying out blasting operations in the vicinity of the underground workings or the threat of natural disaster in the form of a landslide, floods and similar events), the protective shutter is closed by extension of the chambers 5 and 6 of the valves 15 and 16 along the rails 11 and 12 through the mechanism 14. When closing the valves 15 and 16 overlaps the joint between them using the seal 20.

After that include an electric motor 21 and carry out uniform (i.e. compensation to manufacturing errors and Assembly of structural elements of the shutter, as well as irregularities underground workings) pressing of the double cloths 1 whole box 2 protective shutter with elastic seals 17, 19 and external support in the form of the stop 27. However due to the design of the shutter particularly attached to two elastic seals 17 and 19 and the outer stop 27 is a reliable sealing of all gaps between the area of external action and the protected area of the underground workings. Simultaneouslytherefore phenomenon due to the tightening of the double fabric between the elastic seals 17 and 19, an automatic locking in the working position of the valves 15 and 16 against inadvertent disclosure a protective shutter. In addition, due to the presence of these features, the protective shutter of the present invention acquires a new property, namely, that double cloth pressed in to the box position works in shock as a whole (i.e. single) with an additional Central support, interacting with an external focus, not cluttering space underground tunnels.

To restore normal operation of the underground workings shutter open by performing the above procedure in reverse order.

From the above description it follows that in the case of essential features listed in the formula of the present invention are guaranteed access to high-tech and reliable protective shutter with the new technical property is particularly important for underground structures.

1. Protective shutter underground tunnels with side cameras, including fixed on the perimeter of the opening of the underground workings box with work surfaces, double canvas, mounted by means of guide rails in an underground working, with the possibility of placing each of the valves in the respective side chamber, and mechanism for lateral movement of the sash double cloth relative to the longitudinal axis on the earth develop, characterized in that it is equipped with a mechanism for pressing the valves double cloth to the box and elastic seals, one of which is made annular and is installed between the working surface of the box and the front surface of the double cloth in close position of the valves, and the other elastic seal is made in the form of a strip mounted vertically behind the rear surface of the double cloth with the possibility of overlap between its leaves, and the pressing mechanism of the valves double cloth to the box with one end connected with leaves, and the other end is mounted for cooperation with a stop fixed in a recess made in the wall of the underground excavations in front of the working surface of the box.

2. Protective shutter according to claim 1, characterized in that the annular elastic seal is made solid and secured to the working surface of the box.

3. Protective shutter according to claim 1, characterized in that the annular elastic seal is made of two half-rings, each of which is fixed on the front surface of the corresponding leaf double leaf blade.

4. Protective shutter according to claim 1, characterized in that the elastic seal strip has a rectangular cross-section.

5. Protective shutter according to claim 1, characterized in that e is actionee seal strip has a T-shaped cross-section and partially housed between the inner ends of the valves double leaf blade.

6. Protective shutter according to claim 4 or 5, characterized in that the elastic seal strip fixedly mounted on the back surface of one of the doors double-leaf paintings by rigid vertical bars.

7. Protective shutter according to claim 6, characterized in that the pressing mechanism of the valves double cloth to the box contains the Electromechanical drive of the electric motor fixedly mounted on a rigid vertical rod, worm gearbox, two Central rods connected at one end with a worm gear, two pairs of lateral rods, pivotally connected at one end through a pair of corresponding Central thrust, and a spring-loaded rod that is installed against the stop plate and pivotally connected with the free end thrust of the respective pairs of rods.



 

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