GB2233369A

GB2233369A - Mineral working machine

Info

Publication number: GB2233369A
Application number: GB9014165A
Authority: GB
Inventors: Felix Zinovievich Masovich; Svetlana Mikhailovna Golubeva
Original assignee: G PK EXI UGOLNOGO MASH
Current assignee: G PK EXI UGOLNOGO MASH
Priority date: 1989-06-29
Filing date: 1990-06-26
Publication date: 1991-01-09
Also published as: GB2233368A; GB9014164D0; DE4020400A1; DE4020401A1; GB9014165D0

Abstract

An arm (6) rotatable in a vertical plane extends from a casing 1 and carries a working member (2) rotatable about a horizontal axis. The working member (2) has a driven gear (8) meshed with a drive gear (9) which cooperates, via an operative connection (10), with a motor (11) mounted in the casing (1). The arm and the drive gear 9 have a common rotation axis (13). <IMAGE>

Description

-::;. -C- -4 -i -_:5 t=- ---1 - 1 MINERAL WORKING MACHINE The invention

relates to the mining industry, and more specifically, it deals with a machine for working minerals.

The invention may be most advantageously used for mining coal, potash, etc., mainly in thin seams with undulated bedding of enclosing rocks.

A mineral working machine has an arm mounting a working member. The invention is based on an arrangement of the arm which is capable of facilitating passage of the machine in thin seams with undulated bedding of the enclosing rocks, the range of movements of the working member through the thickness of the seam being enhanced.

The invention provides a machine or combine for working minerals having a easing, at least one arm mounted for angular rotation in a substantially vertical plane, and a working member mounted on the arm for rotation about a substantially horizontal axis and having a driven gear installed thereon and meshing with a drive gear positioned coaxially with the axis of rotation of the arm and cooperating with a motor mounted in the easing by means of an operative connection.

The operative connection means ensuring cooperation of the drive gear and motor is preferably disposed in the casing. This construction also enhances the range of control of the working member along thickness of the seam.

To enhance loading capacity of the machine, it is preferred that the arm be made with a recess having its concave area facing towards the roof.

The invention will be described further, by way of example, with reference to the accompanying drawings, in which:

Fig. 1 schematically shows a machine for working minerals in a general top view; Fig. 2 is a sectional view of part of the mineral working machine, taken along its longitudinal axis; and Fig. 3 is a view along arrow A in Fig. 1.

The mineral working machine illustrated has a easing 1 which supports two working members 2, each mounted for rotation about a horizontal axis. Shafts 3 (Fig. 2) of the working members 2 are journalled in bearings 4 in cylindrical guides 5 of arms 6. Each arm 6 is mounted on the casing 1, by means of supports 7, for angular rotation in a vertical plane.

Each working member 2 has a driven gear 8 of exposed gearing, disposed on the face side, which meshes with a drive gear 9. The drive gear 9 cooperates, via an operative connection 10 disposed in the casing 1, with a motor 11 (Fig. 1) which is also mounted in casing 1. The operative connection 10 (Fig. 2) in this embodiment comprises a reduction gear 12 having the drive gear 9 installed on its output shaft. The drive gear 9 and the rotatable arm 6 are mounted coaxially with each other and have a common axis of rotation 13.

It is known from the experience of operation of machines for working in thin seams that a discharge zone 14 (Fig. 3) is constituted by an annular region 15 between the face 16 and a cylindrical surface 17 of the arm 6 and a region 18 between the - 3 roof 19 and a surface 20 of the arm 6 facing the roof 19. For this reason, the profile of the arm 6 is configured in such a manner as to enlarge both regions 15 and 18 to the maximum possible extent while retaining strength of the arm sufficient to support the working member 2 and ensure normal operation of the gears 8 and 9. Thus, to enhance loading capacity, the arm 6 has a recess 21 which has its concave area facing towards the roof 19.

Cutters 22 (Fig. 2) extend with a pitch t along the whole working member 2 over a total length t xn Cutters 23 and 24 are provided, in a staggered fashion, on the driven gear 8, the position and design of the cutters and the teeth of the driven gear 8 being as described in our USSR Patent application 4 705 745 of 29 June 1989.

Operation of the machine The motor 11 (Figure 1), and the drive gear 9, rotates secured to the workine member Breaking the mineral mass for working minerals is as follows: via the reduction gear 12 (Fig. 2) the driven gear 8 which is rigidly 2 to rotate it. with the cutting pitch t is carried out both by the cutters 22 extending along the whole working member 2 and the cutters 23 and 24 which open the way for driven gear 8. The cutters 23 and 24 break down the-mineral mass along the whole height of their cutting faces without any obstructions.

The broken material is discharged into the discharge zone 14 (Fig. 3) formed in the space between the roof 19, the face 16, - 4 the surface 20'of the recess 21, and the cylindrical surface 17 of the arm 6.

Vertical control of the working member 2 is carried out by turning the arm 6 about the axis 13 (Fig. 2) which is also the axis of rotation of the drive gear 9, the driven gear 8 rolling over the drive gear 9.

The use of the above-described machine, especially in thin seams, substantially enhances loading capacity and improves the Rrade of the mineral being worked. In addition, it is possible to use a working member of a small diameter; hence, the field of application of the machine is enlarged, since it can be used in thinner seams. Uniform and admissible cutting pitch ensures operability of the machine in any minerals irrespective of their hardness and toughness. It is also very important that the working member can be vertically controlled by turning the arm about the axis of rotation of the drive gear so as to enlarge the control range.

r

Claims

Claims:

1. A mineral working machine having a casing, at least one arm mounted for angular rotation in a substantially vertical plane, and a working member mounted on the arm for rotation about a substantially horizontal axis, a driven gear installed on the working member meshing with a drive gear positioned coaxially with the axis of rotation of the arm, and means for operatively connecting the drive gear with a motor mounted in the casing.

2. A machine as claimed in claim 1, wherein the operative connection means is disposed in the casing.

A machine as claimed in claim 1 or 2, wherein the arm has a recess whose concave area faces towards the roof in use of the machine.

4. A mineral working machine substantially as described with reference to, and as shown in, the accompanying drawings.

Pubbshed 1991 at The Patent Office. State House, 66171 High Holborn. UndonWC I R 4TP. Further copies maybe obtained from The Patent Office Sales Branch, St Mary Cray. Orpington. Kent BIRS 3RD. Printed by Multiplex techniques lid. St Mary Cray. Kent. Con- 1187