SU1564356A1 - Two-layer walking support - Google Patents

Abstract

The invention relates to mining. The goal is to increase the efficiency of excavation of thick coal seams. For this base, the upper sections of the support are interconnected with the guides on the overlaps of the lower sections of the support, with each upper section resting on two adjacent lower sections. The support contains sections with support-fencing guards on the visors and side grips with advancing cylinders on the bases in the upper gear, and supporting cylinders with supporting flaps in the cantilever part of the overlap and parallel grips for the side grips in the lower gear. The shaving of coal is carried out in two passes of coal combines with transportation along a downhole scraper conveyor in a lower rus. In one pass, the upper layer of the lower rus and the lower layer of the upper rus are removed. For the reverse passage, the upper layer is removed with a movement of the upper sections and a lower layer with a movement of the bottomhole scraper and lower support sections. A front notch of a coal combine of the Upper Rus is made on the movable notch guides. Support cylinders with support plates and support plates protect the lining and chest at the bottom actively. 3 il.

Description

The invention relates to mining, in particular, to walking support structures for excavating thick coal seams.

The aim of the invention is to increase the efficiency of excavation of thick coal seams.

FIG. Figure 1 shows a two-sided walking lining, side view; in fig. 2 - part of two-legged walking lining sections, view from the bottom; in fig. 3 - movable notch guides.

The two-sided walking lining contains a supporting-enclosing section in the lower rune and a protecting-supporting section in the upper rune. In the lower runner the supporting-enclosing section consists of alternating sections of the first and

of different types, differing in the location of the arms 1 for fastening the cylinders 2 of the section movements. In sections of the second type, shoulders 1 are located at the level of the rear hydraulic drive 3, and in sections of the first type - at the level of front hydraulic 4. Roofs 5 sections of the first and second types are interconnected by tongue and groove joints, consisting of dowels 6 and forks with sliders 7 . To the roof 5 by means of a bracket 8, the backrest 9 is hingedly fastened. In the upper tier, the fencing-supporting section consists of sections of the same type. The upper section of the Rus consists of a hydraulic post 10 between the base 11 and the backrest 12 and the supporting visor 13. The back 12 is connected to the base 11 by means of movable brackets 14.

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The overlaps 5 are elongated with a reinforced cantilever instead of a movable canopy. Two parallel guides 15 (Fig. 2) for the side grippers 16, which are bolted to the base 1 1 of the lining section of the upper shaft, are welded to the ceiling 5. With the help of side grips, the 16 sections of the upper trench supports are mounted in the guides 15 on the roofs of two adjacent sections of the lower trench supports. The side grip 16 has eyelets for fastening the cylinder 17 for shifting the upper section. The cylinder rod 17 is fastened in the socket 18 welded to the overlap 5. To the visor 13 of the upper support section is mounted on the connecting rods 19 supporting-guard 20 connected to the cylinder rod 21 installed under the backrest 12. Under the overlap 5 in the cantilever part a support is installed cylinder 22 with a detachable bracket 23 and a welded bracket 24. At the end of the supporting cylinder 22 with a finger 25 is mounted a channel 26, to which the support flap 27 connected to the rod of the spacer cylinder 28 is pivotally attached. c in the bracket 29 welded to the body of the support cylinder 22. With the help of the removable bracket 30 and the bracket 31, the working cylinder 32 is mounted to the retractable canister of the enclosing backrest 9. On the overlap 5 with the help of bolts fixed linear guides 33 for the ski-grabs of the coal combine 34 upper rusa Two movable notch guides 35 (Fig. 3) are provided in the place of the frontal notch of the coal combine 34 on the overlaps 5, which are mounted in the elongated guides 15 and have working cylinders 36. sliders in the cantilever part of the overlap. Removable fenders 38 are mounted on the oval side to enclose the downhole space in the lower rusa on the downhole scraper conveyor 37.

The removal of coal from a mechanized bottom, equipped with a two-level walking support, is carried out according to a one-sided scheme. At the same time, the coal harvester 39, hacked on the chips, raised into the screws at the level of floors 5, moves along the bottomhole scraper conveyor 37 from the ventilation drift to the conveyor drift of the lava, removing the upper layer of the bottom rue coal. At the front of the coal combine 39, the support 22 and the spacer 28 cylinders are cut, driving the support plates 27 to a horizontal position. Following the coal miner 39, the support cylinders 22 are advanced towards the face and with the spacer cylinders 28 the support flaps 27 are pressed against the bottom of the chest. The coal miner 34, also hacked to chip, moves along a line.

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following the coal miner 39, lowering the augers to the level of the overlap 5, and removes the lower layer of the upper coal, which falls on the bottomhole scraper conveyor 37. The coal miner 39 comes to the conveyor drift and, lowering the augers, stops. The coal processor 34 approaches the lava conveyor drift and, lifted up to the roof of the reservoir, moves in the opposite direction to the ventilation drift to the notch sections, removing the upper layer of the upper rus coal, which is also poured onto the bottomhole scraper conveyor 37. At the same time, ahead of the coal combine 34, the disputant covers 20 are contracted into a horizontal position by contraction of the cylinders 21. Following the coal harvester 34, the sections of the roof supports are shifted by supporting the hydraulic post 10, and the cylinders 17 are moved onto the slide 17. the section is moved

0 in guide 15 to slaughter.

After the section has been moved, the hydraulically secured 10 is opened and by turning on the cylinder 21, the support plate 20 is pressed to the face. The coal combine 39 with the augers lowered to the soil layer starts moving from the conveyor drift to the lava ventilation drift to the lower layer of the lower rus and stripping the track under relocation of the downhole scraper conveyor 37. Following the coal tank 39, the downhole scraper conveyor 37 and the lining sections of the lower rus are retrofitted to the bottom. The lining sections of the lower russ are moved to the bottom in staggered order — first, sections of the first type, working on the advancement of cylinders 2.

5 then sections of the second type, working on cutting cylinders 2. In this case, forced reduction of cylinders 17 occurs. Support cylinders 22 are reduced but one of the sections, supporting and fixing and fixing. The working cylinders 32 in the fencing backs 9 are engaged in the operation while reducing and stepping over the rear girders 3, ensuring the effective maintenance of the lining sections of the lower and upper Rus. In the notching sections, the coal com bus 39 raises the auger, removes the full power of the coal pack of the lower russia and stops at the lava air drift. After this, the coal miner 34 is turned on and goes to the ventilation curb of its rus. and then, lowering the augers, returns to the notch sections, stopping by skiing grips on the movable notch guides 35. After it stops, the notch sections move to the face

5 Upper Rus Coal combine 39 first movement to the lava conveyor roadway and. clearing the track on the notching sections, raises the augers to the level of the overlap 5. start a new cycle In the bottom run, complete the advance to the bottom of the bottomhole scraper conveyor 37 and the lining sections. Front coal notch of the coal combine 34 is turned on and the working combine is moved to the bottom to alignment of the movable notch guides 36 with linear guides 33

Claims (1)

Invention Formula Two-sided walking lining, containing interconnected sections of the upper and lower rus, each of which includes overlapping, base, fencing, advancing jacks, an anti-jerking device and a device for connecting the sections to each other, that, in order to increase the efficiency of the extraction of thick coal seams, the upper and lower sections are installed in a checkerboard pattern, with each upper section being attached to two adjacent lower sections by means of side grippers made on the bases of the upper sections L-shaped guides made on the overlaps of the lower sections, overlaps of the lower sections are provided with rigid consoles with a guide located on their upper surface for moving the excavation combine, and fencing of the sleep sections wife fixed at their lower ends of the hydraulic jacks for reacting with the footwall and fixed on their surfaces protivooprokidyvayuschimi hydraulic jacks support for engagement with the working face /// /// ////////// // /////// /// / Ig- g //////////// // y /// # //// // false. // /// /// U //////////// // ////////////////// // FIG 12 18 FIG. 2 Figz