SU1250655A1 - Unit for excavating steep coal beds - Google Patents

Description

The invention relates to mining, in particular, coal mining and roof management in the clearing fortifications of steep seams developed along strike.

The aim of the invention is to reduce the energy consumption of coal extraction by pre-hydrating of the bottom.

FIG. I shows the unit in the process of excavation coal, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - perforated tube, general view.

The unit for excavating steep coal seams consists of mechanized lining 1 of a supportively supporting type, excavation mashine 2, hydraulic systems 3.

The support consists of separate sections of the same type 4, interconnected with the help of hydraulic jacks 5 for shifting alternately for shifting the sections along the strike of the formation and hydraulic telescopic straps 6 for moving the sections in the plane of the formation. Each section 4 consists of two hydraulic struts 7 of double sliding resistance, a top 8, a base 9 and a guard 10.

The upper to 8 is equipped with a power hydraulic cylinder 11 for pushing the perforated pipe 12 into the formation, which is placed in the guide 13 and connected to the top 8 of the support section 4. The internal cavity 14 of the pipe 12 has a Venturi cavitating tube 15. In addition, sections 4 are equipped with hydraulic jacks 16 connected to tubular links 17, leaving a guide post 18 for moving the excavating mask 2. The excavating mask 2 is an actuator 19, equipped with a hydraulic piston 20 and a carriage 21 moving along guide rail 18. The executive body 19 consists of a sliding

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an annular frame 22 with a cutting chain 23 and a fender 24.

The unit works as follows. Before the notch, the formation is hydrofluiled by squeezing the pipe 12 along the entire front of the clearing intake using a power jack 11. The perforated pipe 12 is moved in the guide 13, which serves to set the direction. At the end of the process of squeezing the pipe 12, a hydraulic reagent is injected into the reservoir. As it passes through the constricting-expanding channels of the Venturi tube 15, a periodically breakdown cavitation of the hydroreagent is created, ensuring effective hydroflowing of the formation. The installation of the venturi 15 in the non-perforated part of the pipe 12 allows for greater cavitation of the hydraulic agent. After hydrically loosening, the pipe 12 is removed from the formation and the work of the executive organ 19 begins. Its notch occurs due to the supply to the bottom by a hydraulic rod 20 to a straight vertical position. Then excavation maschina 2 is moved along guide rail 18 along the diagonal bottom. As you move

The 5 excavation masks 2 produce sectional advancing of the lining 1. When the excavating masking 2 reaches the end section of the lining 1, it is gripped by a hydraulic jack (not shown) and moves along the removed strip. At the same time the carriage 21 with

 hydraulic rod 20 holds in place the end part of the executive body 19. The notching machine 2 moves with a hydraulic jack until it becomes 18 and forms a single line along the entire front of the support. Thereafter, the excavation mask 2 is transported downward along the guide rail 18 and the work cycle is repeated.

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five

rig 2

Editor L. Povhan Order 4384/25

Compiled by V. Pushkarsky Tehred I. VeresKorrektor B. But ha

Circulation 470 Subscription

VNIIPI USSR State Office

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Design. four

Claims (1)

UNIT FOR DIGGING STEEL COAL STORES, including a dredging machine with an executive body, moving along a guide stand, consisting of separate interconnected sections, lining sections, interconnected hydraulic jacks for moving and intersectional connections, containing bases, ceilings and fencing _> articulated between sections and installed relative to the excavating machine with a lag or ahead of the previous section by a step of movement, and hydraulic jacks, characterized in that, for the purpose of lowering the energy intensity of the coal extraction due to preliminary hydro-loosening of the bottom, each lining section is equipped with a perforated pipe installed in the ceiling guide along its longitudinal axis and kinematically connected with the hydraulic jack, and the extraction machine is equipped with a hydraulic rod with a carriage moving along the guide rail, which is pivotally connected with the hydraulic jack to § the base of the lining section, while the inner cavity of the perforated pipe has a cavitation venturi installed coaxially in non-perforated part of it. SU, „, 1250655 (rig 1