SU1243634A3 - Szield for entry driving of underground winning faces - Google Patents

Abstract

The invention relates to a cutter shield which is used as a face-accompanying shield in the driving of the development roadways of an underground mining face and whose driving cutters underpinning the roadway roof consist of telescopic cutters (21) whose front cutter parts (25) can be displaced independently of the rear cutter parts (26) towards the working face by means of telescopic cylinders (32). The rear cutter parts (26) of the telescopic cutters (21) conveniently have trailing cutters (27) which form a trailing shield, in the protection of which the final roadway supports (37) can be set. The cutter shield is open towards the face side so that a drum-type cutting machine (14) located at the face can move right into the shield in order to cut the roadway roof. <IMAGE>

Description

The invention relates to devices for. excavation of mining sites of mining faces.

The purpose of the invention is to increase the safety of penetration.

FIG. 1 shows a knife shield, a longitudinal section; FIG. 2 is a section A-A in FIG. one.

The mining face has an excavation

with a niche 18. A double-acting hydraulic cylinder 19 is secured between the rear knife part 16 and the support frame 10 of the shield, which is protected by the rear knife part 16, which has a box-shaped shape. Its rod 20 by the hinge 21 is attached to the support frame 10. Between the parts 15 and 16 of the telescopic knives 11 there is a fixed hydraulic cylinder 22, which

section 1 transportation of coal. Before 0, there is inside the box-shaped clearing face an exquisite shape of the front knife part 15. The telescopic hydraulic cylinders 22 rest on the back of the knife part 16 and they, the stem 23, is attached to the 15 front knife part 15.

From the side of the continuous fence, the support frame 10 of the shield 9 rests on at least one support knife 12, made in the form of a rigid short

in the form of a chain scraper conveyor, a mobile downhole conveyor 2, which is extended to the excavation section 1, and here the coal is transported to the drift conveyor 3. The excavation of the seam is carried out by means of a drum cutter 4, which is moved by the housing 5 along the bottomhole

conveyor 2 and has at least a knife. Inside the supporting knife 12 there is a double acting hydraulic cylinder 19, the stem of which 20 is connected by a hinge 21 to the supporting frame 10.

At its one end, mounted on a height-adjustable supporting bracket 6, a driven cutting drum 7. The feed of the drum cutting machine 4 in the longitudinal direction of the bottomhole conveyor 2 can be carried out, for example, by using driven gears 8, which interact with

Double-acting die cylinder 19, the stem of which 20 by the hinge 21 is attached to the support frame 10.

The supporting blade 13 on the opposite 25 face of the side of the drift is a continuous flat surface, for example, j of angular, triangular or trapezoidal shape. It is guided at the base of the support frame 10 and is also a backfill side on the downhole tran 30 with a hydraulic rake supplied by a hydraulic cylinder 2.

The tunneling knives 14 on the side of the slab are also made — in the form of rigid tunnels, which, like the supporting knives 12 and 13, are made in the form of short knives without matching part 1 simultaneously with a solid face. To protect the excavation area in the area of penetration at the point of contact with the face, there is a knife shield 9, made in the form of an arch, having a bearing 10, made rigid or, in the case of a spacer shield, hinged. The sinking knives forming the shield of the shield are supported on the supporting frame 10 and are visually guided using T-grooves — Yush — in the direction of penetration. The shield 9 has telescopic guiding 11 and 13 supporting knives, as well as driving knives 14 located on the side of the nipple. Telescopic knives 11 protect the drift profile in the roof area, as well as in the area remote from the solid drift side wall. Telescopic knives 11 consist respectively of the front knife part 15 with box-shaped

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driving knives 17. The same they are designed hydraulic cylinders 19.

The entire shield 9 is supported by the supporting blades 12 and 13 on the inclined soil of the seam 24. Knives 12 and 14 on the side of the blade, made in the form of rigid short knives, form a hole in the cover of the shield. Passing the bottomhole conveyor 2 and passing the drum-cutting machine 4, which due to This can move up to the space of the knife shield 9 (Fig. 1 and 2). In this position, a drift profile is cut using a rotatable cutting drum 7.

Destructible rock roof indicated by the position 25 (Fig. 1). After the profiling and telescopic installation of the roof of the drift with the help of the rear knife part 16, which is drilled in it, the cutting machine 4 is cut out with smooth

connected to

the walls of the roof are immediately protected with the accompanying knife 17, for which a double-acting hydraulic cylinder 19, which is protected by the rear knife part 16, is box-secured with a telescopic one 18. Between the rear knife part 16 and the supporting frame of the shield 10. Its rod 20 by the hinge 21 is attached to the support frame 10. Between the parts 15 and 16 of the telescopic knives 11 there is a fixed hydraulic cylinder 22, which

Double-acting die cylinder 19, the stem of which 20 by the hinge 21 is attached to the support frame 10.

The supporting blade 13 on the opposite 25 face of the side of the drift is a continuous flat surface, for example, j of angular, triangular or trapezoidal shape. It is directed at the base.

driving knives 17. The same they are designed hydraulic cylinders 19.

The entire shield 9 is supported by the supporting blades 12 and 13 on the inclined soil of the seam 24. Knives 12 and 14 on the side of the blade, made in the form of rigid short knives, form a hole in the cover of the shield. Passing the bottomhole conveyor 2 and passing the drum-cutting machine 4, which due to This can move up to the space of the knife shield 9 (Fig. 1 and 2). In this position, a drift profile is cut using a rotatable cutting drum 7.

Destructible rock roof indicated by the position 25 (Fig. 1). After excavation of the roof of the drift with the help of a drum cutting machine 4, the cut out

The roof area is immediately protected, for which, using telescopic hydraulic cylinders 22, the front knife parts 15 of the driving knives 11 are fed to the side of the chest. At the same time, the rear knife parts 16 with the accompanying knives 17 remain in a fixed position. The knife parts 16 and 17 form a shield space, under the protection of which the final drift support can be inserted. Before the final roadway support is installed, an uncut piece of soil of the reservoir 26 is removed in the tail section of the shield using an appropriate additional production machine in order to obtain

horizontal foot drift. After removing the uncut soil

layer 26 are inserted and drift arches 27 are installed in the tail section of the shield 17 formed by soprivozhim kimi knives. Following this, the rear blades 16 can be moved forward with the accompanying blades 17, which occurs with the help of hydraulic cylinders 22 and / or hydraulic cylinders 19. After shifting the bottomhole conveyor 2, the supporting blades 12 and 13 can move forward as well as the boring blades 14 from the side with the help of their hydraulic cylinders.

After all the passage knives have been moved, the support frame 10 is tightened to them, for which all the hydraulic cylinders 19 are moved in synchronism with the fixed motion knives. In telescopic knives 11, the rear blade parts 16 are held by telescopic hydraulic cylinders 22 when the support frame is moved. If the frictional connection of the passage blades with the rocker rock is not enough to reliably move the support frame forward, then at least a few knives, for example, support knives, can grips or other elements in order to be pressed into the rock.

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: to INCREASE the coupling of knives with a side rock.

As well as the hydraulic cylinders 19, the telescopic hydraulic cylinders 22 are also protected inside the telescopic knives 11. The telescopic hydraulic cylinders 22 can be positioned outside the front blade parts 15 and supported on the supporting frame 10 here. The shield design also allows the hydraulic cylinders 19 to advance. the telescopic knives 11 or in the retracted or in the screwed state in the form of a constructive knot. Telescopic knives 11 on the opposite side of the face of the drift can be made in accordance with tunneling knives 14, located on the side of the bottom, also in the form of rigid tunneling knives without enclosing elements. In this case, the telescopic knives 11 are located only in the area of the cut roadway roof. Located on the side walls of the drift tunneling knives can be performed in such a way that the side of the slab can lie either left or right.

By removing individual tunnel knives or replacing the tunnel knives with narrower width knives, the parallel-sided continuous-hole excavation shield can also be adjusted to mining faces with steeper deposits or with greater reservoir thickness. Due to the cylinders located in the tunneling blades, it is possible to construct the shield short in length, so that a constant

 the fastener of drift 27 may be inserted directly behind the solid face. Side opening knives 14 and support frames: 10 can be provided with openings or recesses and the like in order to create an opening for movement in the direction of the continuous bottom.

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Editor O. Golovach

Compiled by V. Ponomarev

Tehred N. Bonkalo Proofreader L. Pilipenko

Order 3722/60 Circulation 470Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (4)

1. A SHIELD FOR PASSING THE DRAWING LINE GRAVES OF THE UNDERGROUND MINING MINES, in particular, using the cutting profile of the drift of the cutting logging machine, comprising box-shaped side and upper tunneling knives with front knife parts, flat guarding elements attached to the back to the upper driving knives, the supporting parts of the frame and the telescopic hydraulic cylinders installed between the driving knives and the supporting frame for feeding the driving knives forward and pulling the supporting frame, o characterized by the fact that, in order to increase the safety of penetration, the upper driving knives are equipped with axial movement of the box-shaped rear knife parts mounted inside the front knife parts, with flat guarding elements pivotally attached to the free ends of which, while one of the telescopic hydraulic cylinders is fixed at one end on the rear knife parts, and others on the support frame, other telescopic hydraulic cylinders are fixed at one end on the front knife parts, and others on the rear knife parts or the supporting frame, and the supporting parts of the frame are made in the form of box-shaped knives. 2. Shield pop. 1, characterized in that the telescopic hydraulic cylinders connecting the front and rear knife parts are installed inside the front knife parts. 3. The shield according to paragraphs. 1 and 2, due to the fact that telescopic hydraulic cylinders connecting the rear knife parts to the support frame are installed inside the rear knife parts. 4. The shield according to paragraphs. 1-3, characterized in that one of the supporting knives is made angular. SU <, »1243634> sn