SU853282A1 - Frame of metallic roof support for mining - Google Patents

Description

(54) FRAME OF METAL FIXTURE FOR MINING

one

FIELD OF THE INVENTION The invention relates to the mining industry, in particular, to malleable metal fasteners for mine workings.

The known metal support frame for mine workings, including upper and pliable strut I.

A disadvantage of the design is that the frame, having an increased vertical ductility, is rigid in the horizontal direction. In addition, the drawback of the wedge assembly used in this frame is the lack of self-engagement, which leads to uneven resistance.

The closest technical solution to the invention is a metal support frame for mine workings, including pliable composite struts and upper frames made of special profiles and interconnected by flexible nodes made in the form of a bracket and clamping elements D}.

The disadvantage of the design is the impossibility of self-striking the assembly and the complexity of the design.

The purpose of the invention is to provide self-shaking of the nodes of compliance and simplify the design of the node of horizontal compliance.

The goal is achieved by the fact that the bracket is C-shaped, and the clamping elements are wedges arranged between themselves and special-purpose flanges, with the upper part of the lower element of the rack being made with a protrusion for interacting with the bracket.

FIG. 1 presents proposed

10 mounting frame, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 and 4 - a node of vertical compliance in two projections; in fig. 5 is a section BB in FIG. 3

The frame consists of the upper 1, two half-legged racks, including the upper 2 and lower 3 parts, the horizontal nodes 4 and the vertical 5 compliance, each of which includes a flange 6 enclosing the flanges 6 with two wedges 7 and 8.

The mounting of the frame of the support takes place in the following manner;

On the upper parts of the 2 racks, install the staples 6 and wedge them with wedges 7

and 8. The lower parts of the 3 racks are installed on the working ground and the upper parts 2 are put on them so that the projection of the lower rack goes under the bracket 6. The prepared upper to 1 with wedged brackets 6 are hung on the installed racks.

The node vertical compliance works as follows.

As the rock pressure increases, the forces are transmitted to the lower part of the rack through the bracket. At the initial moment, the bracket is mixed with respect to the fixed wedges, since the contact area of the wedges with the profile is larger than with the bracket. As the stapling pressure on the wedge, the profile size along the flanges decreases, i.e., the profile is deformed by a predetermined amount. The magnitude of the profile deformation is determined by the slope of the wedges and their length.

After the clamp rests on the wedges, it moves with them. In this case, the force of resistance of the compliance node is determined by the force of friction of the slip between the profile and the wedge brace, as well as the force of the deformation of the profile.

The horizontal compliance node works in a similar way.

Claims (2)

1. Results of science and technology. V. 13. VNIITI 14, 1975, p. 312-315, p. sixteen. 2. USSR author's certificate No. 383835, cl. E 21 D 11/14, 1971 (prototype). / / / ffe. / ffZ .. d L // J 0ff.J ff0ffz.