SU907264A1 - Lock joint - Google Patents

Description

I

FIELD OF THE INVENTION The invention relates to mining, namely, to fortifications of preparatory workings.

It is a well-known compliant connection of elements from a grooved profile, which consists of elements to be joined, clamp, strap and nuts 1.

A disadvantage of the known connection is its unreliability in the connections with nuts, as well as the longitudinal and deformation of the strap supported on the bottom of the upper element to be joined, during the work of the support in difficult geological conditions; high intensity, (two collars with nuts and strips for one connection); small carrying capacity; Significantly labor-intensive installation and dismantling of the lining. j

The closest technical solution is a locking connection, including a clamp, made in the form of a bracket, covering the lining elements of a grooved profile with flanges, consisting of a bottom, interacting with the flanges of the lining elements and side walls, at the ends of which holes are made to accommodate them. an item.

A disadvantage of the design of the known joint is the unreliability of the joint due to the opening of the ends of the side portions of the yoke during operation caused by the longitudinal deformation of the finger of the periodic profile with significant rock pressure acting on the lining.

The purpose of the invention is to increase the reliability of the connection.

Claims (2)

The goal is achieved by the fact that the stop element is made in the form of a plate with three notches, two of which are made at its ends to accommodate the side walls of the clamp and central to accommodate one of the elements of the support in the bottom, and at the ends of the plate has two mounting holes. and the holes in the side walls of the clamp are made with a variable radius and two restrictive protrusions. Figure 1 shows the castle connection; figure 2 - view And figure 1. The locking connection consists of a collar 1, connecting elements 2 and 3 of the grooved profile; two ends are made at the ends of the hose in the form of diametrically located sectors 4 with restrictive protrusions 5 and the stop element 7 on the plank with notches 8 and 9 and hole 10; The clamp holes in the form of sectors are made of variable radius 11 and straight section 12. The chambered structure works as follows. The interconnected elements 2 and 3 are inserted with an overlap. A collar 1 is installed at the junction, which is supported from the side of the rock contour of working out on the flanges of the open part of the element, and the radius of the smaller section is in close proximity to the edge of the upper element to be joined and opposite to the pinching of the plank when moving the top lining. In the holes of the collar made with variable radius 4, having restrictive protrusions 5 and 6, horizontally at the bottom of element 3, the abutment element 7 is inserted in the form of a bar with recesses 8 and 9, which is rotated through montay holes 10 by a crowbar. By moving the side grooves 8 to the variable radius 11, the bar extends to the straight section 12, resting on the central notch 9 on the bottom of the Element / m 3, thereby creating the initial resistance of the compliant joint. Under the action of rock pressure acting on the support, the element 3 is displaced relative to the stationary element 2; supporting the central recess 9 on the bottom of the grooved profile 3, the bar is forced to move along a straight I2 in the openings of a variable radius of the side. out of the clamp parts. When this happens, the gaps between the flanges of the connected elements are eliminated and the growing resistance of compliance is created. Restrictive protrusions 5 and 6 prevent further movement of the plank along straight 12. Disassembly of the joint is carried out by knocking the plank in the direction opposite to its pinching. The reliability of the lock joint by increasing its rigidity will allow maintenance-free maintenance of workings, re-use of the lining. Claims: Clamping connection, including a clamp, made in the form of a clamp, covering support elements of a grooved profile with flanges, consisting of a bottom, interacting with the flanges of the support elements and side walls, at the ends of which holes are made to accommodate a stop element, characterized by that, in order to increase the reliability of the connection, the stop element is made in the form of a plate with three notches, two of which are made at its ends to accommodate the side walls of the collar and central for them and in it there are the bottoms of one of the lining elements, with the plate having two additional mounting holes at the ends, and the holes in the side walls of the yoke are made with changes} of radius and two restrictive protrusions. Sources of information taken into account during the examination 1. Geleskul M.N. and others. Handbook of mounting mine workings. M., Nedra, p.49, p.18, 1972. 2. USSR author's certificate number 574537, cl. E 21 D 11/14, 1974 (prototype).