RU2358110C1 - Four support protecting lining with low placed platform for mining working face with fall from top - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: four support protecting lining with low placed platform for mining with fall from top consists of four bearing hydraulic telescopic supports installed on platform and pivotally connected with their upper parts with upper beam, of front telescopic beam, pivotally connected with front side of upper beam, and of protecting plate pivotally connected with front side of front telescopic beam. A protecting hydro-cylinder assembled on the front telescopic beam has a rod pivotally connected with a back side of the protecting plate. The back side of the upper beam is pivotally connected with an upper part of the protecting beam. The lower part of the protecting beam is pivotally connected to the platform by means of a positive four-link. A tail beam of a box form is pivotally connected with the lower part of the protecting beam, while the hydro-cylinder of the tail beam is installed between the lower part of the tail beam and lower part of the protecting beam. A slide guide is located in the box cavity of the tail beam; the cavity contains an inserted plate and the hydro-cylinder to actuate the inserted plate to move alternately back and forth along the slide guide.

EFFECT: increased efficiency of mining.

3 cl, 2 dwg

Description

The invention relates to hydraulic supports used for underground mining in coal mines, in particular to a four-support supporting protective support with a low base for development with a collapse from above.

Support for development with a collapse from above began to be used in the development with a collapse from above. The introduction of integrated mechanized development into the technology for developing a face with a collapse from above led to its significant development. Advancement of integrated development technology with a collapse from above led to a significant expansion in the scope of application of complex mechanized mining, which made it possible to simplify mining operations and improve the organization of mining operations, increase labor productivity, increase output during integrated mining, reduce the cost of coal mined and achieve, thus, significant technological and economic efficiency in coal mining.

However, large investments in high-performance and highly efficient mining equipment and an increase in the size of equipment, such as conveyors and mining equipment, required an increase in the corresponding dimensions of the hydraulic support, which complicated the operation of this support and the management of the front and rear conveyors of the developed face.

The aim of the present invention is to provide a four-support supporting fencing with a low base for the development of a collapse from above with high performance.

To achieve the above goal, a four-support supporting fence was created with a low base for the development of a collapse from above, containing:

base, four hydraulic telescopic supports mounted on the base and pivotally connected to the upper parts with the upper beam, the front telescopic beam pivotally connected to the front side of the upper beam, the hydraulic cylinder of the front telescopic beam mounted between the rear side of the front telescopic beam and the upper beam, protective a plate pivotally connected to the front side of the front telescopic beam, a protective hydraulic cylinder mounted on the front telescopic beam e and having a rod pivotally connected to the rear side of the protective plate, while the rear side of the upper beam is pivotally connected to the upper part of the protective beam, the lower part of the protective beam is pivotally connected to the base via a positive four-link, the box-shaped tail beam is pivotally connected to the lower part of the protective beam and the tail boom hydraulic cylinder is installed between the lower part of the tail boom and the lower part of the protective beam, in the box-shaped cavity of the tail boom there is a sliding guide in which there is an insertable plate and a hydraulic cylinder designed to set the plate in motion for its alternate movement back and forth along the sliding guide, the connection between the hydraulic cylinder of the tail boom and the hydraulic cylinder of the introduced plate is adjustable, a front spray device is installed in front of the front telescopic beam, interacting with hydraulic telescopic supports when lowering the supports, a rear spray device is installed behind the upper beam, Tweeting with the hydraulic cylinder of the inserted plate during its retraction.

A gear rack can be installed along the lower transverse edge of the insert plate.

A pushing hydraulic cylinder may be mounted on the base. The advantages of the invention are the effective combination of lining and low-lying technical means for development with the collapse of coal, i.e. the design is adapted with a low base for the collapse of coal with a tail boom and an insert plate in the lower part of the protective beam, while controlling the insert hydraulic cylinder allows the plate to slide along the sliding guide, extending and removing the plate, and sliding the plate blocks the waste rock and ensure that its pieces fall on the rear conveyor, and the extraction of the introduced plate is carried out during the collapse of coal; control of the hydraulic cylinder of the tail boom ensures its swing up and down to weaken the upper part of the coal seam or pile up coal; the dimensions of the coal loading hatch can be adjusted by extending and retracting the tail rods of the tail boom cylinders and the insert plate.

The main advantages of the present invention include the following:

1. The manhole for loading coal is located low and sequentially, which makes it possible to efficiently load fine coal without destroying the crest and a high rate of coal recovery.

2. The positive four-link mechanism is used to swivel the lower part of the protective beam with the base in the form of an open fork, thereby ensuring reliable stability of the lining and the presence of an opening for the passage of two people into the face.

3. A large space for loading coal from the rear and a large swing angle of the tail boom are preferred for collapsing the upper part of the coal seam; With the help of a gear rack installed along the lower transverse edge of the inserted plate, massive pieces of coal can be split to a certain extent, preventing the hatch from blocking to load coal.

4. The extension and removal of the inserted plate and the swing of the tail boom are used to adjust the size of the hatch for loading coal, adjusting the amount of coal shipped and making it possible to move the rear conveyor.

5. The connection between the hydraulic cylinder of the tail boom and the hydraulic cylinder of the introduced plate is provided. The tail boom is removed automatically, regardless of whether the tail boom is manipulated correctly or incorrectly, so as to prevent a gap caused by the insert plate being pulled into the rear conveyor while the tail boom is being retracted.

6. The upper beam is pivotally connected to the front telescopic beam connected to the protective plate, while the articulated upper beam not only meets the requirements for the transport length, but also the possibility of adjusting changes in the movement of the upper plate is expanded; after passing through the rollers of the mining machine, with the help of the front telescopic beam, you can regularly maintain the top plate to prevent collapse of the roof. In addition, the protective plate can be used to support the wall of the coal seam in the opposite direction to prevent cracking of the wall of the coal seam of the safety pillar, and you can also remove the protective plate when healing and compacting coal.

The four-support supporting guard lining with a low base for developing a collapse from above according to the present invention is particularly suitable for the integrated development of inclined coal seams, moderately inclined coal seams of medium hardness and soft coal seams.

The following is a description of embodiments of the invention with reference to the accompanying drawings, which depict the following:

figure 1 depicts a schematic view of a lining according to the present invention;

figure 2 is a left view of the lining shown in figure 1.

As shown in the drawings, a four-support support guard with a low base for developing a collapse from above according to the present invention comprises a base 1, four hydraulic support telescopic supports 2 mounted on the base 1 and having upper parts pivotally connected to the upper beam 3. Front telescopic beam 4 is pivotally connected to the front side of the upper beam 3. The hydraulic cylinder 5 of the front telescopic beam is installed between the rear side of the front telescope beam 4 and the upper beam 3. The protective plate 6 is pivotally connected to the front side of the front telescopic beam 4. The front of the front telescopic beam 4 has a protective cylinder 7, the rod of which 7 is pivotally connected to the rear side of the protective plate 6. The rear side of the upper beam 3 is pivotally connected with the upper part of the protective beam 8. The lower part of the protective beam 8 is pivotally connected to the base 1 by means of a positive four link 9. The tail beam 11 of the box-shaped form is pivotally connected to the lower part of the protective beam 8. The hydraulic cylinder 12 of the tail boom is installed between the lower part of the tail boom 11 and the lower part of the protective beam 8. In the box-shaped cavity of the tail boom 11 there is a sliding guide in which the insert plate 13 and the hydraulic cylinder 14 are located, by means of which the plate 13 is moved to move alternately forward and backward along the sliding guide. To prevent blocking the hatch for unloading coal and to split to a certain extent massive pieces of coal along the transverse edge of the lower part of the inserted plate 13, a gear rack is installed. To facilitate the movement of the lining, a hydraulic cylinder 15 is installed on the base 1. The connection between the hydraulic cylinder 12 of the tail boom and the hydraulic cylinder 14 of the plate 13 is applied so that the plate 13 is removed automatically, regardless of whether the tail beam 11 is manipulated correctly or incorrectly to prevent a gap caused by the plate 13, which is pulled out into the rear conveyor during the extraction of the tail boom 11. In front of the front telescopic beam 4, a front spray device is installed in interacting with hydraulic telescopic supports 2 during lowering of the supports. Behind the upper beam 3, a rear spray device is installed, interacting with the hydraulic cylinder 14 of the plate 13 during its retraction. Therefore, both when moving the lining, and when the coal collapses, it is possible to provide effective dust suppression, thereby improving the environment in the working area in the developed face.

Claims (3)

1. A four-support supporting protective lining with a low base for developing a bottom face with a collapse from above, containing a base (1), four supporting hydraulic telescopic supports (2) mounted on the base (1) and articulated by the upper parts with the upper beam (3), characterized in that the front telescopic beam (4) is pivotally connected to the front side of the upper beam (3), the hydraulic cylinder (5) of the front telescopic beam is installed between the rear side of the front telescopic beam (4) and the upper beam (3), the protective plate (6) is pivotally connected to the front side of the front telescopic beam (4), the protective hydraulic cylinder (7) is mounted on the front telescopic beam (4) and has a rod pivotally connected to the rear side of the protective plate (6), the rear side of the upper beam (3) is pivotally connected to the upper part of the protective beam (8), the lower part of the protective beam (8) is pivotally connected to the base (1) by means of a positive four-link (9), the tail beam (11) of the box-shaped form is pivotally connected to the lower part of the protective beam (8), while the tail boom cylinder (12) is installed between the lower part of the tail boom (11) and the lower part of the protective beam (8), in the box-shaped cavity of the tail boom (11) there is a sliding guide in which the inserted plate (13) and the hydraulic cylinder (14) are located driving the inserted plate (13) to move it alternately forward and backward along the sliding guide, the connection between the hydraulic cylinder (12) of the tail boom and the hydraulic cylinder (14) of the inserted plate is adjustable, installed in front of the front telescopic beam (4) but the front atomizing device in communication with the hydraulic telescopic supports (2) for lowering the legs, the rear upper beam (3) is set back a spraying device associated with a hydraulic cylinder (14) inserted plate in its retraction. 2. The support according to claim 1, characterized in that it comprises a gear rack installed along the transverse edge of the lower part of the inserted plate (13). 3. The support according to claim 1 or 2, characterized in that it comprises a pushing hydraulic cylinder (15) mounted on the base (1).

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