SU1461987A1 - Face support canopy - Google Patents

Abstract

The invention relates to equipment for mechanized mine faces and m. used in the processing of thick coal seams. The goal is to increase the reliability of operation by providing active control of the upper crm and guaranteed force contact of the movable trumpet f 7 8 Phi “J ka with the seam roof in any position. The overlap contains a beam 1 connected by a hydraulic cylinder (HZ) 15 with an intermediate element in the form of a two-arm lever (DR) 9. The upper part of the DR 9 is connected by eyelets 14 to the upper one 4. The latter has longitudinal cavities 5 and an all-moving visor 6 including beams 7, inside which the HZ 8 is installed. The lugs 14 are located between the ends of the shoulders of the DR 9, and the holes 11 in them are oval. After the excavation, the coal by the combine HZ 8. Includes an extension and a retractable visor 6, supported by the stops 10, covering the exposed space. When lowering, the top 4 HZ 15 is compressed, the stops 10 come out of contact with the retractable visor 6, and the fingers 13 move along the oval hole 11. Then the top 4 is turned. 2 Il. (L 9d SO bo

Description

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The invention relates to mountain spruce, in particular, to the equipment of complex-mechanized cleaning aboys, and can be used in mechanized supports during the development of powerful coal seams

The purpose of the invention is to increase the reliability of work by providing for the active control of the top with the arranged power contact. Sliding visor with the roof of the plate in any of its position.

FIG. 1 shows a bottomhole assembly, a side view of FIG. 2 is a view A of FIG. one.

The overlap of the downhole support contains beam 1, hydroresistance 2, base 3, top to 4 with longitudinal cavities 5 and an all-over visor 6 including beams 7, inside which hydraulic cylinders 8 are placed. Under the top 4, brackets are hinged to beam 1 ( intermediate elements) 9 in the form of two shoulders with front supports (stops) 10 on one shoulder, oval holes 11 and other shoulders 12. In the middle part, the brackets 9 are hingedly connected to the top 4 fingers 13, mounted in the eyes 14 and oval holes 11. Others Lechi 12 levers are connected to the beam 1 of the hydraulic cylinder 15, and the lugs 14 are located between the ends of the arms of the levers.

Section bottomhole works as follows.

In the initial position, the lining section is in the open state. The cylinders 15 are extended, the stops 10 are supported by the beams of the retractable visor. one

After the belt is removed by the combine, the coal in front of the support section is turned on to push the hydrocyl of the indra 8, and the retractable visor 6, supported by the stops 10, overlaps the exposed space without detaching itself from the roof. After cleaning the track and moving the conveyor, the support sections are moved to the bottom of the roof. At the same time, the section, movable with or without thrust, is supported by the lid 4 and it slides against the extendable visor 6. The hydraulic cylinders 15 can remain on the hydraulic locks while the section is being moved, and, if necessary,

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to be partially extended to unload the retractable visor.

During operation, the lining with the release of an interlayer (under-roofing) strata by means of hydraulic cylinders 15 upper to 4 can be raised up or down to a vertical position. When lowering the top of the hydraulic cylinder 0 rye 15 is compressed, the stops 10 come out of contact with the retractable visor 6, and the fingers 13 move along the oval groove to its end, after which the turn of the top 4 begins. 5 it during coal seams of different thickness, in the presence of weak and hard-to-break roofs, as well as during Q mining of powerful coal seams with the release of interlayer (under-roof) layers. Application of the proposed bottomhole lining section ensures quick pick-up and maintenance of the bare roof 5 and, if necessary, cleaving the under-roof bundle of coal.

Claims (1)

The ability to release coal from the under-roofing or interlayer strata provides the ability to eliminate coal loss when working with the proposed roof support of thick flat seams of coal in two layers. Formula Eteni The overlap of the downhole support, comprising a beam connected through a hinge and hydraulic control jack with the rear end and the middle part of the intermediate element, made in the form of a lever, the upper part of which is hingedly connected through eyes, in the holes of which fingers are installed, with the top having longitudinal cavities, inside which there are beams of retractable visor with hydraulic cylinders, and with a front support fixed on one arm, on which the front end of the retractable visor is installed, characterized in that, in order to increase the reliability of operation by 50 providing active control the upper one, the intermediate element is designed as a two-armed lever, the front support is in the form of a roller, a. the apertures are oval, with the hydraulic control valve attached to the second shoulder of the intermediate element, and the lugs are located between the ends of the arms of the lever. 0 35 40 View A