PL168143B1 - Cap piece for self-advancing roof supports - Google Patents

Abstract

1. The roof of a powered support mining industry divided into main and tilting, through a connecting piece having two holes, one of the holes is a bearing pin, characterized by that it has detachably connected two segments (1) and (2) which, when stretched with the bumper (6), folded in with at least one element, constitute a rigid beam and the segments (1) and (2) are completed on the side of the main pin (3) with sheets the thrusters (5). being construction canopy has a working form (I) of length maximum (a) and the assembly and transport form (II) and (III), when connecting the segments (1) and (2) main pin (3) or auxiliary pin the pin (4).

Description

The subject of the invention is the canopy of a powered mining support used in prop supports.

It is known from the Polish invention No. 133 818 entitled Mining support for an underground mine, a structural solution of the main canopy, articulated on the side of the rampart with a rear swing canopy. The main roof board is connected to the swing canopy through a connecting element that has two openings - upper and lower. This element enables the pressure of the tilting canopy to the ceiling without the possibility of lowering it down when the bearing pin is in the upper opening. After shifting the pin to the lower position, the swing beam can be lowered. The lowering of the swing canopy is enabled by a hydraulic cylinder that passes through the cave cover opening. This actuator supports the tilting canopy with one end, and with the other end it rests against an additional structural element of the housing. The solution according to the known invention is aimed at adapting the mechanized mining support to work in both the proppant and caving mining systems.

In the case of a backfill-only mining support, the solution has the disadvantage of an overly bulky rear segment containing two large pins, an additional actuator and an additional structural component.

The object of the invention is to overcome this disadvantage and to construct a mining support canopy for a proppant system that provides rigid support to the roof of the excavation - while maintaining the ability to fold the canopy, especially when assembling, disassembling or transporting the support assemblies.

This goal was achieved by constructing a roof canopy of a mechanized mining support, which has two segments connected separately. Segments, after expansion with a buffer composed of at least one element, constitute a rigid beam and are terminated on the side of the main pin with support plates. The structure of the canopy has a working form with a maximum length and two assembly and transport forms, with the segments connected with the main bolt or an additional bolt, eliminating the bumper. In one of the assembly and transport forms, the canopy segments are connected with the main bolt, and the sheets of the segments

168 143 lean against each other. The second form of assembly and transport has segments connected with an additional pin, and one of the segments has a vertical position.

The subject of the invention in the same embodiment is shown in the drawing, which is represented by the side view of the canopy in the working form and in both assembly and transport forms. The batten according to the invention has segments 1 and 2 detachably connected and stretched by a stop 6. The segments 1 and 2 are terminated on the main pin 3 side with support plates 5.

The roof beam has a working form I with a maximum length a, for the housing section height h. When the segments 1 and 2 are joined with the main bolt 3, after removing the bumper 6, the segments 1 and 2 rest against each other with metal sheets 5 and the roof rail takes the assembly and transport form li. After removing the main bolt 3 and connecting the segments 1 and 2 with an additional bolt 4, the segment 2 has a vertical position and the roof canopy takes the assembly and transport form III. In the case of the operation of the mechanized mining support units at a height of h min., The form II of the canopy is used in assembly and transport works, because only then the position of the lower end of segment 2 is above the bottom of the mining excavation.

168 143 mir

Publishing Department of the Polish Patent Office of the Republic of Poland Circulation 90 copies

Price PLN 1.50

Claims (4)

Patent claims 1. The roof of a mechanized mining support is divided into a main and a tiltable roof, by means of a connecting element having two holes, one of the holes having a bearing pin, characterized in that it has two segments (1) and (2) detachably connected, which after expanding the bumper (6), composed of at least one element, constitute a rigid beam, and the segments (1) and (2) are terminated on the side of the main pin (3) with support plates (5), the canopy structure having a working form (I) with the maximum length (a) and the assembly and transport form (II) and (III), when the segments (1) and (2) are joined with the main pin (3) or an additional pin (4). 2. The roof structure according to claim A method according to claim 1, characterized in that its assembly and transport form (II) has an intermediate length (b), the segments (1) and (2) being connected by the main bolt (3) and the sheets of the segments (1) and (2) supporting about yourself. 3. The roof structure according to claim A method according to claim 1, characterized in that its assembly and transport form (III) has a minimum length (c), the segments (1) and (2) being connected with an additional pin (4), and the segment (2) having a vertical position. 4. The roof structure according to claim The bumper of claim 1, characterized in that its stop (6) preferably consists of two symmetrically arranged elements.