SU939771A1

SU939771A1 - Base of prop power roof support

Info

Publication number: SU939771A1
Application number: SU802983862A
Authority: SU
Inventors: Степан Степанович Литвиненко; Николай Васильевич Спивак; Владимир Дмитриевич Турук; Владимир Константинович Сулев; Евгений Александрович Письменский
Original assignee: Шахтинский научно-исследовательский и проектно-конструкторский угольный институт им.А.М.Терпигорева
Priority date: 1980-09-19
Filing date: 1980-09-19
Publication date: 1982-06-30

Description

. (5) ОПОРА ГЙДРОСТОЙКИ МЕХАНИЗИРОВАННОЙ КРЕПИ. (5) MECHANIZED MECHANICAL FIXTURE SUPPORT

1one

Изобретение относитс к средствам креплени очистных забоев и предназначено дл механизации процессов креплени кровли при добыче угл подземным способом.The invention relates to the fixing of cleaning faces and is intended for the mechanization of the processes of fixing the roof in the extraction of coal by the underground method.

Известна шахтна стойка, включающа опору, выполненную Ё виде шаровых соединений, и позвол юща самоустанавливатьс опоре относительно нее на неровност х почвы 1.A shaft stand is known, including a support, made in the form of ball joints, and allowing self-alignment of the support relative to it on the unevenness of the soil 1.

Недостатками указанной опоры вл йэтс большой габарит по высоте, что особенно существенно в механизированных креп х, которые предназначены дл эксплуатации на тонких пластах, где необходимо иметь минимальный габарит по высоте, и сложность конструкции , обусловленна наличием большого числа деталей.The disadvantages of this support are large dimensions in height, which is especially significant in mechanized supports, which are designed for operation on thin layers, where it is necessary to have a minimum clearance in height, and design complexity due to the presence of a large number of parts.

В процессе работы механизированной крепи стойка может устанавливатьс на участках лавы, которые имеют различиогс рода неровности, толькоIn the process of working mechanized lining stand can be installed on areas of lava, which have different types of irregularities, only

в двух взаимно перпендикул рных плоскост х , что снижает надежность данного соединени .in two mutually perpendicular planes, which reduces the reliability of this connection.

Наиболее близка к предлагаемой 5 опора гидростойки механизированной крепи включает фланец с выступом и основание с пазом, в котором размещен выступ фланца,Closest to the proposed 5 support hydroracks mechanized lining includes a flange with a protrusion and a base with a groove in which the flange protrusion is placed,

О В известной опоре стойка с основанием и стойка с подвижным фланцем имеют общие сферические поверхности, выполненные концентрично друг к другу , а наружна поверхность фланца,О In the known support, the stand with the base and the stand with the movable flange have common spherical surfaces made concentric to each other, and the outer surface of the flange,

Claims

5, which is made crosswise in plan, along the perimeter in contact with the lower inner plane of the base, has a bevel facing down. The bottom of the stand is made in the form of a truncated cone whose surface mates with spherical surfaces in contact with the base and flange G2}. If there are irregularities in the soil of the reservoir, the base and the stand when the latter is spread rotate relative to each other by a solid angle formed by the surface of the truncated cone of the bottom of the stand and the plane of the internal cavity of the base. Such a connection of the rack with the base should have free rotation within the specified solid angle. However, the coal plug and small fines, falling through the gaps in the space between the flange crossings into the cavity of the solid angle and not having access to the outside, are gradually pressed into place, as a result of which the joint becomes stationary and non-separable. Loss of mobility of the support relative to the stand leads to breakage of the support and deformation of the stand due to the bending moment that occurs during its expansion. The purpose of the invention is to increase the reliability of work. This goal is achieved in that the support is made with an intermediate element, which is installed with the ability to interact with the flange when the stand is tilted, while the flange is made with a bevel. This embodiment provides the possibility of rotation of the support relative to the rack at a solid angle determined by the size of the gaps between the movable flange and the surfaces of the inner strip of the support, helps to remove fine rock and pin from the support cavity, increases the reliability of the joint. FIG. 1 shows the proposed support, in, id in the plan; in fig. 2 shows section A-A in FIG. 1. The support consists of a hydraulic stand 1 with a spherical bottom, having a shoulder 2, a base 3 with grippers 4, a flange 5 with a spherical inner surface 6 and a bevel 7 along the perimeter entering the grooves of the base formed by grippers H, intermediate element 8 Spherical outer surface 9 "When operating such a connection, the stand 1 may deviate relative to the base 3 by a given solid angle, which is determined by the size of the gaps between the flange 5 and the surfaces of the groove of the base 3. When the stand rotates relative to the base, the sphere the bottom of the pillar 1 slides along the sphere of the base 3. Thus, the flange 5 is reciprocated relative to the plane of the base groove. The flange 5, bevelled 7, facing upwards, displaces the pedigree fines and shtyb from the internal cavity of the bearing, thereby preventing their pressing. At the same time, the base 3 with the intermediate element 8 and the flange 5 is held on the rack 1 by means of a groove formed by the grippers 4 and a spherical bottom with collet 2. The use of the proposed hydraulically supported prop support allows increasing the reliability of the connection by eliminating its stitching and also extends field of application on seams with uneven soil hypsometry. Claims , while the flange is made with a bevel. Sources of information taken into account during the examination 1. German patent number 1199723, cl. 5 from 15/5, published. 1965.

2. USSR author's certificate №, cl. E 21 D, 1971 (prototype).

A-A

in p 7