RU1804561C - Frame support - Google Patents

Abstract

Usage: in mining, in particular to the frame lining of the preparatory workings conducted on the layers of various capacities. SUMMARY OF THE INVENTION: The upper one is made in the form of longitudinal and transverse stiffeners with openings along the entire length connected by sheet material. At the ends of the transverse ribs are made connecting elements with the possibility of connecting the upper ones. 3 ill.

Description

FIELD: mining. SUBSTANCE: invention relates to mining, in particular, to a frame support of preparatory workings conducted both over formations of various thicknesses and host rocks and can find application in the coal and mining industry.

The aim of the invention is to increase the bearing capacity of the lining and the safety of work.

In FIG. 1 depicts a trapezoidal frame support and a node for connecting the upper to the pillar support; in FIG. 2 - the top to the spatial structure and the nodes of the connection of the tops on the support of the rack I-I and between them II-II; in FIG. 3 - wedge lock.

The trapezoidal frame support of the proposed design consists of a metal upper 1, supports 2 and racks 3. The upper one 1 is a frame of transverse 4 and longitudinal 5 stiffeners. The stiffeners are made of thin (1.5-3 mm) stamped steel along the entire length of the holes 6 to facilitate construction. All stiffeners except transverse end faces have square elongations formed during stamping uniformly spaced along the length of the rib .7 measuring 20 by 20 mm, bent under

angle of 90 ° with respect to the plane of the rib. The longitudinal ribs 5 have elongations both at the ends 11, On the inner transverse rib and the inner longitudinal ribs, at the intersection points, Slots are punched for connection (assembly B) and then secured at an angle of 90 ° by electric welding. The external stiffeners 4 and 5 are connected by electric welding (spot) using the corners 8. A frame of stiffeners is formed by connecting the inner ribs to the outer ribs with the help of the corners 9 and welding the elongations at the ends of the longitudinal ribs 11 with the outer transverse ones. The finished frame is bent by a steel sheet 12 with a thickness of 1 mm and connected to it by spot welding at all points of elongation of the stiffeners and through 100 mm along the entire length of the bend of the outer transverse ribs 13. For fixing in the supports 2 (Fig. 1 and 2} at the edge Holes 14 are arranged at the top. The supports consist of a platform 22. The cheeks 16 and the socket 15.

When erecting lining on racks 3, which can be made of any materials (wood, I-beam, channel, special profile), supports are installed by nests 15 (Figs. 1 and 2: yids 1-1, node A, end view B), last into space

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between the cheeks 16, the previous and subsequent tops are mounted with the open part of the structure down. In the holes of the top 14 and cheeks: supports 16, fixing pins 17 with a cotter pin are installed. The tops of the previous and subsequent are interconnected by wedge locks 18, consisting of the left 19 and right 20 parts connected by the wedge 21.

The proposed construction of the lining allows you to accelerate its installation, increase the bearing capacity, ensure maintenance-free maintenance of the development and the elimination of a significant part of manual work on the backing and, as a result, increase the safety of work during

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sinking and maintaining, its culture and productivity.

Claims (1)

SUMMARY OF THE INVENTION Ramna support including upper; racks interconnected by means of connection nodes, characterized in that, in order to increase the bearing capacity and safety of work, the upper k is made in the form of a frame of longitudinal and transverse stiffeners with holes along the entire length and interconnected by sheet in this case, connecting elements are made along the end transverse ribs for fastening the upper legs. to 4 g ir ;,