RU2254480C1 - Mechanized support section ceiling - Google Patents

Abstract

FIELD: mining industry.

SUBSTANCE: ceiling has screen, inside of which in guides extending screen is mounted and hydro-jack for moving extending screen. Ceiling is provided with guiding beam rigidly fixed on screen and cylindrical groove, cut-in gear with possible movement along guiding beam and cylindrical guide positioned transversely to screen and also with possible removal from them. Cut-in gear has saw, mechanically connected to engine through reducer, on body of which ring fixing is rigidly mounted for cylindrical guide.

EFFECT: higher reliability.

2 cl, 3 dwg

Description

The invention relates to mining, in particular to a method for controlling the roof in disturbed areas, and can be used in the development of coal, potash and rock-salt formations by mechanized complexes.

Known overlapping mechanized lining, including a visor with a top sheet and a rear wall, inside of which a retractable cleaver in the form of a wedge is installed in the guides, and a hydraulic cylinder for moving the cleaver connected to the cleaver by an eye with a rear wall, characterized in that the visor is equipped with a transverse beam with gear hooks, spring and levers rigidly connected at one end with the transverse beam, the shear hydraulic cylinder is installed with the possibility of additional axial displacement of its eye, pr whereby the spring is placed between the rear wall and the eye, the upper planes of the eye are inclined at an acute angle to the axis of the hydraulic cylinder for contacting with the transverse beam, and the second ends of the levers are pivotally connected to the upper sheet with the possibility of rotation of the levers in the vertical plane and contact of the gears with the roof [A. FROM. 2015339, cl. E 21 D 23/06, 1992].

This overlap does not allow to exclude possible outfalls of enclosing rocks in the bottomhole zone during the operation of the mechanized complex in areas with unstable roofing.

Known overlapping mechanized lining [A.S. 1574822, class E 21 D 23/06, 1987], adopted for the prototype, including a box-shaped sliding top connected to the housing by a hydraulic jack, located on its open bottomhole end, a closed circuit fencing device on which the working elements are fixed.

The disadvantage of this overlap is the low technical reliability, since the design of the retractable visor is made in the form of a box, which is the reason for filling the structure of the visor during the extraction of minerals, as well as the fact that each mechanized support in the treatment complex must be equipped with such a visor, which is significantly will reduce the reliability of the mechanized complex if one or more of the cutting mechanisms fail.

The objective of the invention is to remedy these disadvantages. The problem is solved in that the overlap of the section of the powered roof support, including a visor, inside which a retractable visor and a hydraulic jack for moving the retractable visor are installed in the guides, according to the invention, is equipped with a guide beam and a cylindrical guide rigidly fixed to the visor, a cutting mechanism with the possibility of movement along the guide beam and cylindrical guide across the visor and removal from them, and the cutting mechanism contains a cutting saw mechanically connected to the engine through p a gear unit on the housing of which a ring mount for a cylindrical guide is rigidly fixed.

In the overlap of the mechanized lining section, the guide beam is made in the form of an I-beam with a rail on one side and is connected with the cutting mechanism through a rack and pinion and roller support.

This solution will allow avoiding the filling of the visor during the extraction of minerals, as well as reducing the thickness of the retractable visor, which will make it possible to use the proposed section of powered roof support on low-power formations. It will be possible not to use a stationary cutting mechanism on each mechanized support of the mining complex, which will significantly reduce the cost of such supports and increase the reliability of the mining complex.

The invention is illustrated by drawings, where in Fig.1 shows a mechanized lining in the face; figure 2 is a longitudinal section of the overlap; figure 3 is a view of a cylindrical mount on the visor of the floor.

In the drawings: 1 - a removable array;

2 - overlap of the section of mechanized lining;

3 - a cut saw;

4 - gear;

5 - engine;

6 - a directing beam;

7 - gear;

8 - roller bearing;

9 - a cylindrical guide;

10 - retractable visor;

11 - displacement hydraulic jack;

12 - visor;

13 - ring mount.

The overlapping 2 sections of the powered roof support is equipped with a visor 12, on which the guide beam 6 and the cylindrical guide 9 are rigidly fixed. Inside the visor 12, a retractable visor 10 is installed, which is connected with the hydraulic jack moving 11. Also, the overlap is equipped with a mounted cutting mechanism, which consists of a cutting saw 3 mechanically connected to the engine 5 through the gear 4. The gear box 4 is rigidly fixed to the annular mount 13, which, when using the mounted cutting mechanism, is mounted on a cylindrical direction 9. The hinged cutting mechanism has two connections with the guide beam 6, one of which is made in the form of a roller support 8, and the other in the form of a gear 7, which is mechanically connected to the gearbox 4.

The work of the mechanized complex, equipped with the provided lining, in the disturbed areas is as follows.

The mechanized complex should be equipped with mechanized supports with the proposed ceilings 2, and the hinged cutting mechanism is used in a single copy for the entire mechanized complex. When the complex is operating in severely disturbed areas, it is necessary to fix the removable array 1 in advance to prevent collapses from the roof when excavating minerals. To do this, before excavating 2 sections of the powered roof support, the visor 12, which is equipped with a guide beam 6, a cylindrical guide 9, a retractable visor 10 and a hydraulic jack 11, install a hinged cutting mechanism with a cutting saw 3. Then, using a cutting saw 3, make the roof of the formation has a slit, after which a retractable visor 10 is pushed into the made slot with the help of a hydraulic jack 11. The cutting saw 3 is driven by the engine 5 through the gear 4. The mounted cutting mechanism for a more stable condition Niya has three support points, two of which are located on the guide beam 6, and one is mounted on the cylindrical guide 9. One of the supports of the guide beam 6 is made in the form of a roller support 8 with the possibility of free movement along the guide beam 6. The second is made in the form of a gear 7 and has a rack connection with the guide beam 6, and is driven by a gear 4, which allows the hinged cutting mechanism during the formation of the cutting gap to move along the guide beam 6 across the visor 12 along the chest of the clearing Aboyan. The third, the ring mount 13, is rigidly fixed to the gear housing 4 and, when installing the mounted cutting mechanism, is mounted on the cylindrical guide 9, and when moving the mounted cutting mechanism is able to freely move along it.

In the process of formation of a cutting gap at the top of the formation, the cutting mechanism moves along all the floors 2 of the treatment complex, since all floors 2 in the treatment complex are in the same row, however, it is necessary that there is no gap between them for a more guaranteed transition of the cutting mechanism from one floor 2 to another. When the mechanized complex is operating under normal conditions, where premature attachment of the formation roof before excavation is not required, you can remove the mounted equipment and continue working.

This decision will allow the mechanized complex to operate in disturbed areas and not to use a stationary cutting mechanism on each mechanized lining of the mining complex, which will significantly reduce the cost of such supports and increase the reliability of the mining complex.

Claims (2)

1. Overlap of the section of powered roof support, including a visor, inside of which a retractable visor and a hydraulic jack for moving the retractable visor are installed in the guides, characterized in that it is equipped with a guide beam and a cylindrical guide rigidly fixed to the visor, a cutting mechanism with the possibility of movement along the guide beam and the cylindrical guide across the visor and removal from them, and the cutting mechanism contains a cutting saw, mechanically connected to the engine through a gearbox, on the body which is rigidly fixed ring mount for the cylindrical guide. 2. The overlap according to claim 1, characterized in that the guide beam is made in the form of an I-beam with a rail on one side and is connected to the cutting mechanism through a rack and pinion and roller support.

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