SU407053A1 - HYDRAULIC SHIELD FASTENER FOR TIGHT - Google Patents

Description

one

The invention relates to the mechanized fastening of the clearing space in the underground mining of coal seams during the excavation of their wide stripes in the fall.

Hydraulic panel board supports of a supportive-supporting type, designed to secure the bottomhole area during excavation of steep formations in wide strips in the fall, consisting of the same type of hinged-connected sections, including the frame, top, hydraulic racks and telescopic fencing.

The proposed shield fixture differs from those known in that, in order to ensure reliable protection of the wellbore space from the leaching collapsed rocks and adaptability of the fixture to the unevenness of the soil and roof when the thickness of the reservoir changes, the middle telescopic barrier of each section is divided into equal parts by a partition, and made in the form of frames connected by hinges with the upper c.

FIG. 1 shows the lining section, general view; in fig. 2 - telescopic fence, view from the side of collapsed rocks.

Shield support consists of sections of the same type pivotally connected to each other. Each section contains base 1, top to 2, two

hydroracks 3 and telescopic fence, including the lower stage 4, rigidly welded to the base, the middle stage 5 and the upper stage 6, connected by a hinge 7

with the top com. In order to preserve the required size of the embedment, travel stops 8 are provided in the telescopic fence. The middle fence is divided into equal parts by the partition 9, which gives it the necessary strength and rigidity. Accordingly, the upper stage is made in the form of two identical frames, each of which is associated with the upper hinge. To dismount the support, after working the panel to the full height

metal floors 10 and wooden knuckle 11, which is attached to cable 12 with jars, and so that the knurler does not clamp to the soil of the reservoir, a stop 13 is provided at the bottom step of the floor, sections are laid over the sections. Sections are interconnected along the bases by double-hinged beams 14 and on the upper Kam - round link chain 15.

Reliable protection of the bottomhole formation space from the leaching obrushchennyh rocks with a one and a half to two-fold change in the thickness of the reservoir is achieved by performing a three-stage telescopic fence along the width close to the installation spacing of the sections

the strike of the reservoir. Performing the upper step of the two-frame enclosure halves the allowable embedment value (/) into the middle step of the enclosure, and thereby increases the section's expansion. In addition, the section is well adapted to the unevenness of the roof and soil of the formation, due to the different extension of the upper framework. Shifting shield shield on the dip of the reservoir, after coal excavation, drying, under the action of its own weight of the lining and the weight of the overlying crushed rocks by reducing the pressure in the hydroresistant sections to the required value.

The subject of the invention Hydraulic shield lining for steep seams with their recessing in broad stripes in the fall consists of similar sections of hinged and interconnected sections, including the frame, upper, hydraulic, and telescopic fencing, having lower, middle and upper steps, characterized by that, in order to ensure the adaptability of the lining and unevenness of the soil and roof when changing the thickness of the reservoir, the middle step of the fence of each section is divided into equal parts by a partition, and the upper step is made in the form of frames, Split with the top com.

f / 12

FIG. 2