Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent
1984-08-13
1989-08-29
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Sidewall-working
E21C 2702
Patent
active
048611115
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to the mining industry, and more particularly it relates to a mineral-winning mining machine, e.g. a mining cutter-loader.
BACKGROUND OF THE INVENTION
There is known a mineral-winning mining cutter-loader (see, for example, UK Application No. 2081778A, Int. Cl..sup.2 E21C 27/32) with a chainless feed system, comprising a housing and a gantry.
The housing is arranged at the working-face side of the conveyer and has its longitudinal axis extending along the conveyer. Accommodated along the longitudinal axis of the housing, in the cantilever fashion at the ends thereof are work-performing members for breaking the mineral and loading it onto the conveyer.
The housing accommodates therein the drive mechanisms of the work-performing members. Overlying the conveyer is a gantry pivotally connected with the housing.
The gantry accommodates the feed mechanism of the cutter-loader, including gears with horizontal axes of rotation, arranged at the working-face side of the conveyer, and a drive with reduction gearing to actuate the gears.
A guiding rack is mounted on the conveyer at the working-face side thereof, intended for meshing interaction with the gears as the cutter-loader is displaced along the working-face.
In this structure of the prior art the housing is mounted for vertical adjustment relative to the gantry.
The housing is provided with hydraulic supports bearing upon the floor of the seam, which are in the form of hydraulic cylinders. Arranged between the housing and the gantry are vertical hydraulic cylinders intended to perform vertical adjustment of the housing relative to the gantry as the thickness of the mineral seam varies.
The provision in the structure of the prior art for vertical adjustment of the housing alone relative to the gantry is insufficient for operation in thin seams, since under these conditions more often than not there arises the necessity of vertical adjustment, first and foremost, of the gantry itself. This adjustment could be required when, under the thin seam conditions, there arises the necessity of passing under the gantry oversize pieces of the mineral, or else of passing the gantry itself under a sagging beam of the roof support, and so on.
In the structure of the prior art, the vertical position of the gantry relative to the conveyer is practically inadjustable to avoid interference with the meshing of the gears of the feed mechanism with the rack attached to the conveyer.
The mineral-winning mining cutter-loader of the prior art is impractical for operation in thin seams, particularly those in the range of thicknesses from 0.65 to 1 meter, because the above described arrangement of the propulsion gears results in the gantry being of a relatively great height.
SUMMARY OF THE INVENTION
The present invention has for its aim the creation of a mineral-winning mining cutter-loader with a chainless feed system, wherein the propulsion gears and the guiding rack should be so arranged as to provide for reducing the height of the gantry and for adjusting the vertical position of the gantry in operation.
This aim is attained in a mineral-winning mining cutter-loader with a chainless feed system, comprising a housing arranged at the working-face side of the conveyer and a gantry pivotally connected with the housing, overlying the conveyer and carrying propulsion gears interacting with a guiding rack mounted on the conveyer, in which cutter-loader, in accordance with the invention, the propulsion gears and the guiding rack are arranged at an inclination relative to the axis of the housing, transverse with respect to the direction of the motion of the cutter-loader; hydraulic cylinders being mounted between the housing and a gantry for fixing the housing relative to the gantry, having their one ends pivotally connected to the housing and their opposite ends pivotally connected to the gantry.
Because of this structure, the herein disclosed mining cutter-loader has a relatively small height, both the housing and the gantry having
REFERENCES:
patent: 4372618 (1983-02-01), Pearey
patent: 4435018 (1984-03-01), Parrott
patent: 4508391 (1985-04-01), Spektor et al.
Khorin Vladimir N.
Masovich Felix Z.
Starichnev Vladimir V.
Turkin Vladimir V.
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