PL151938B1 - The roof-bar of the mechanized mining shaft lining - Google Patents

Description

REPUBLIC POLAND PATENT DESCRIPTION 151938 Additional patent to patent no. --- Int. Cl. ⁵ E21D 17/04 OFFICE Reported: 86 10 07 / P. 261767 / Priority ---- E21D 23/06 READING ROOM GENERAL PATENT Application announced: 88 08 18 RP Patent description published: 1991 03 29

Creators of the invention: Wojciech Skoczyński, Jan Dziuk, Wincenty Pretor,

Władysław Tazbir, Edward Dubas, Kazimierz Parkietny, Stanisław Borkowski

The holder of the patent: Przedsiębiorstwo Mechanizacji, Automatyzacji and Elektroniki Górniczej Polmag-Emag *

Komag Mining Mechanization Center,

Gliwice / Poland /

MECHANIZED MINING HOUSING SOCKET

The subject of the invention is a multi-segment canopy for a mechanized mining support

There are known multi-section canopies of mechanized mining supports, in which the main part is mounted an extendable canopy, and at its end a cover plate of the face of the wall is articulated, which can act as an extension of the canopy. Mining practice has shown that apart from the undisputed advantages of these solutions, they also have disadvantages resulting from the considerable length of the extendable canopy, which as a rigid beam connected in the extended position with the main canopy causes destruction of the end of the main canopy as a result of elastic deformation caused by rock mass pressure. The applied reinforcements of the canopy end significantly increase the canopy dimensions, and thus the weight of the casing. In addition, a long and rigid canopy does not fully adhere to the ceiling in case of its unevenness, which complicates the technology of work.

The aim of the invention is to eliminate the phenomenon of destruction of the end of the main canopy by an extendable canopy and to increase the degree of adhesion of the canopy to the ceiling.

This goal was achieved according to the invention, the extendable assembly of which is divided into two segments - working and guiding, mutually articulated, and the end of the working segment is swiveled with a cover plate of the face of the wall, which also serves as an extension of the extendable canopy.

The operating segment of the withdrawable unit, directly supporting the ceiling, is rotated in relation to the articulation by means of an actuator fixed with one end to this segment, and with the other to the guiding segment embedded in the main canopy.

151 938

151 938

The cover plate of the face of the wall is articulated to the end of the working part of the extendable canopy, it is rotated in relation to the articulation by an actuator fixed with one end to the shield, and with the other to the working segment of the extendable canopy. The working segment of the withdrawable canopy, in the extended and vertically positioned position, can act as a shielding face for the face of the wall, and therefore together with the face shield of the face of the wall, it allows for significant protection of the face of the wall. Such a construction of the canopy allows for a more complete adhesion of the canopy to the ceiling, due to the possibility of adjusting the mutual position of the segments of the extendable canopy depending on the unevenness of the ceiling, and the articulated connection of the segments of the extendable canopy eliminated the destruction of the end of the main canopy. An additional possibility was also obtained to deflect the canopy working segment earlier towards the ceiling called tamping, i.e. even when the canopy working segment is not fully extended. The articulated connection of the segments of the extendable canopy and the support of the working segment significantly reduces the impact of the rock mass load on the deformation of the extendable canopy, and thus the destruction of the end of the main canopy.

The roof riser according to the invention of a mechanized mining support is shown in the attached drawing in an axial section, with the dashed line marking possible positions of the canopy elements.

In the main canopy 1 of the mechanized mining support, an extendable canopy is mounted, consisting of a working segment 3 and a guiding segment 4, embedded in the main canopy, interconnected by a joint 5, and the total length of the segments 314 approximately corresponds to the length of the seat in the main canopy. The segments 3 and 4 are interconnected by an actuator 6, one end of which is articulated to the guiding segment 4, and the other end of which is articulated to the segment 3 directly or indirectly by means of a lever kinematic system. To the end of the working segment 3 of the extendable canopy 3, 4, the shielding disc 7 of the wall face is articulated, the tilt of which is controlled by the actuator 8 attached to the working segment 3 and the disc 7 directly or through a known lever kinematic system. The canopy 3, 4 is ejected by an actuator 9 attached to the segment 4 and the main canopy 1 or another segment of the fixed housing. During the operation of the casing, the working segment 3 in the extended position may function as a shielding face of the wall face, together with the shield 7, assuming a vertical position or, as work progresses, act as a canopy. Similarly, the shielding disc 7 of the face of the wall may function as an extension of the extendable canopy, and thus the head of the canopy assembly.

Claims (1)

Patent claim The ridge of a mechanized mining support with an extendable canopy embedded in the main canopy and a shielding shield of the face of the wall, articulated with an extendable canopy and controlled by a hydraulic actuator, characterized in that the extendable canopy is divided into two segments / 3 and 4 / interconnected by a joint / 5 / and has an actuator / 6 / fixed with one end to the working segment / 3 / and with the other end to the leading segment / 4 / extendable canopy. 151 936