SU1564361A1 - Ceiling of powered support section - Google Patents

Abstract

This invention relates to mechanized creams of watering faces. The purpose of the invention is to expand the scope of application by providing work in the face with a loose roof. For this, the overlapping of the mechanized roof support section has an extension mechanism, made in the form of a percussion device, and the retractable element - in the form of a package of wedges 2. The wedge 2 covers the case and has on the underside of the shanks 3, each of which has a protrusion 4 and an aperture 5, which made in the lower tail of the shank 3 for fastening the percussion device. The guide ribs 10 with eccentric locks 9 are located in the middle part of the shank 3. The locks 9 serve to fix the wedges 2 in the extended position. The front part of the overlap has cutouts for the shank 3 for directional movement of the latter and transverse grooves for eccentric locks 9. In this case, the impactor has the appearance of a jackhammer with a lance having a cylindrical protrusion on its side. Such a design allows the application of overlapping to be extended by ensuring the advance introduction of wedges 2 into the area of contact of the coal seam with the roof before the strip is excavated by the coal mining machine. 1 hp f-ly, 4 ill.

Description

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FIELD OF THE INVENTION The invention relates to the mining industry, namely, to mechanized fortifications of working faces.

The purpose of the invention is to expand the scope of application by ensuring the operation of mechanized lining in the face with a loose roof.

FIG. Figure 1 shows the overlap of sections of mine mechanized supports (the dotted line shows the end of the cover body and the cuts under the shanks of the wedges in the position when one wedge is in the extreme extended position, the other wedge is in the extension stage and two wedges are in the initial position), top view; in fig. 2 - wedge construction; in fig. 3 is a view A of FIG. 2; in fig. 4 - peak jackhammer with a cylindrical protrusion.

The overlapping of the mechanized support section consists of body 1 with a package of wedges 2 of special shape laid on it. To secure the wedge 2 on the overlap, its length is three times the size of its maximum extension. The lower wedge 2 has shanks 3 with a protrusion 4 and a hole 5 for fastening percussion devices (not shown). As a shock device can be used jackhammers with a pick 6, having a cylindrical protrusion 7 or vibrators. To fix the wedge 2 when extending it to the face, in the front part of the housing 1 there are cutouts 8 for the shanks 3 of the wedges 2 and transverse grooves (not shown) for the eccentric retainers 9, and in the middle part of the shank 3 there are two guide ribs 10 made of corner steel. On one of the ribs 10 an eccentric lock 9 is installed for fixing the wedge 2 in the extended position.

The overlap is used as follows.

The cylindrical protrusion 7 at the peak 6 of the jackhammer is inserted into the hole 5 of the protrusion 4 on the shank 3 of the wedge 2 and driven between the roof and the formation. After the extension of the wedge 2 to the specified

its value is fixed in this position with an eccentric lock 9. The demolition hammer is moved to the next wedge and the operation is repeated. Instead of a jackhammer on the ledge 4 shank 3

You can install a vibrator. After the extension of the wedges 2 on all sections of the lining located in the lava, a strip of mineral is dredged. After the mineral strip has been dredged in one of the sections, the eccentric locks 9 release the wedge 2 and move the section against the dredging step without losing contact of the housing 1 with the roof. When this occurs, the thrust of the wedges 2 on the housing 1 overlap. This is how all sections are shifted. At the end of the movement of the sections, the wedges 2 are again advanced by driving.

Claims (2)

1. Overlap of the mechanized roof support section, including the overlap housing with sliding elements associated with the covering extension mechanism, characterized in that, in order to expand the field of application by providing work in the face with a loose roof, the extension mechanism is designed as a percussion device, and the sliding the element is from a pack of wedges that enclose the body of the rear cover, on the underside of which there are tailors with protrusions and openings in the lower hem of the tails for fastening the percussion device The shafts are made with guide ribs in their middle part and an eccentric lock for fixing the wedge in the extended position, and the front part of the overlap is made with notches for the shanks for directional movement of the latter and transverse grooves for eccentric locks. 2. The overlap of claim. 1, characterized in that the percussion device is made in the form of a jackhammer with a lance having a cylindrical protrusion on its side. t Pva.1 fO $ 1/84