CZ19837U1 - Tubular shaped metallic spacer - Google Patents

Abstract

Pipe shaped metal bunton for mining flexible arch lining, used by driving the long workings, is formed by an elongated body (1), which is flattened at both ends and at least one intermediate section (2) of flattening is bend out in the shape replicating profile of mine lining (5 ), flattening on both sides is equipped with at least one first fastening hole (4), the second fastening hole (4') for clamp (3), whereby the elongated body (1) is equipped in the flattened part or the whole length brace (6).

Description

Technical field

The technical solution relates to tubular shaped metal spacers for malleable malleable arch supports used in the excavation of long mine workings for their reinforcement. The spreader is designed to secure and increase the stability of malleable flexible arch reinforcement made of rolled trough profiles.

BACKGROUND OF THE INVENTION

Currently, spacers made of steel, iron or its alloys are commonly used to join two adjacent steel reinforcement assemblies along the perimeter of the mine. These pins are generally formed of elongated bodies of different cross-section and are provided with different fastening elements at their ends. They are fixed grips or holes, one at each end of the spreader. Other components of these spacers are conventional yokes or hooks for attaching to the profile of the malleable yielding arch reinforcement and fastening nuts. A common type is a rod-shaped spreader according to CZ 3879 U1, i.e. an elongated hollow body which is flattened at its ends and provided with one fastening hole at each end. Another common embodiment is a spreader according to CZ 5271 U1. The spreader consists of an elongated rod body with an internal cavity, flattened at its ends and provided with a round-shaped fastening hole on one side and two oval-shaped fastening holes on the other side. The disadvantage of these spacers is that due to the simple fixation at the ends of the spacers or the one-sided fixation, ie.

adjacent to the flat part of the spreader to the front wall of the mine reinforcement profile, the necessary stability of the mine work is not ensured, the spreader needs to be fixed with sufficient number, which increases the costs and labor of mine work. A disadvantage of the circular shape of the mounting holes is the difficulty of mounting accuracy.

The essence of the technical solution

The aforementioned drawbacks are largely overcome by the tubular shaped metal spreader of the malleable arching of long mine workings, which is provided with at least one yoke or two fastening hooks for attachment to the mine arching profile according to a technical solution consisting of an elongated one a body which is flattened at both ends and at least one central portion of the flattening is bent to form a profile of the mine support, the flattening is provided on both sides with at least one first fastening hole and a second fastening hole for the yoke; full length reinforcement.

The distance between the first fastening holes and the second fastening holes of the tubular spreader is greater than the width of the mine reinforcement profile.

The first fixing holes and / or the second fixing holes of the tube spreader are oval,

The expansion according to the invention has the advantage of being suitable for any mine reinforcement. It allows to achieve the required stability and strength by using a reinforcement in the elongated tubular body.

Overview of figures in the drawing

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a side view of a tubular shaped metal spreader of a malleable flexible arch support and FIG. 2 shows a top view of a tubular shaped metal spreader of a malleable flexible arch support.

-1 CZ 19837 Ul

Examples of technical solution

The tubular metal spreader, which is provided with at least one yoke for attachment to the mine reinforcement profile, is formed by an elongated body 1 which is flattened at both ends and at least one central flattening portion 2 is bent into a shape copying the mine reinforcement profile 5; provided on both sides with at least one first fixing hole 4 and a second fixing hole Ψ for the yoke 3, the elongate body 1 being provided with a reinforcement 6 in the flattened part or along its entire length.

The distance between the first fastening holes 4 and the second fastening holes T of the tube spreader is greater than the width of the profile of the mine reinforcement 5, eg for mine reinforcement types TH 29, TH 34, TH36 and K24.

The first fixing holes 4 and / or the second fixing holes Ψ of the tube spreader are oval.

Claims (3)

PROTECTION REQUIREMENTS A tubular shaped metal spreader having at least one yoke for attaching to a mine reinforcement profile, characterized in that it is formed by an elongated body (1) which is flattened at both ends and at least one middle portion (2) flattened the flattening is provided on both sides with at least one first fixing hole (4) and a second fixing hole ( ^4f ) for the yoke (3), wherein the elongate body (1) is provided in a flattened shape parts or the entire length of the reinforcement (6). A pipe expander according to claim 1, characterized in that the distance between 20 by the first fastening holes (4) and the second fastening holes (4 ') is greater than the width of the profile of the mine reinforcement (5). Pipe expander according to claims 1 and 2, characterized in that the first fixing holes (4) and / or the second fixing holes (4 ') are oval.