CA1145779A

CA1145779A - Excavating machine

Info

Publication number: CA1145779A
Application number: CA000354226A
Authority: CA
Inventors: Andre Chalindar
Original assignee: STEPHANOISE DE CONSTRUCTIONS MECANIQUES Ste
Current assignee: STEPHANOISE DE CONSTRUCTIONS MECANIQUES Ste
Priority date: 1979-07-20
Filing date: 1980-06-18
Publication date: 1983-05-03
Also published as: ES8105439A1; FR2461806B1; BR8004506A; FR2461806A1; ES493475A0

Abstract

IN THE CANADIAN PATENT AND TRADEMARK OFFICE

PATENT APPLICATION

entitled: Excavating machine in the name of: Andr? CHALINDAR

assignee: Soci?t? St?phanoise de Constructions M?caniques Soci?t? Anonyme organized under French Law.

ABSTRACT OF THE DISCLOSURE

The invention relates to an excavating machine constituted by a mobile frame, an arm which supports a mining tool and which is coupled to the frame with interposition of a chassis-upperstructure assembly, on which it is mounted to pivot about a first axis, which is horizontal and transversal, the said chassis-upperstructure assembly comprising an upper-structure which is orientable with respect to the frame about a second axis which is vertical, and a chassis orientable with respect to the frame about a third axis which is horizontal and parallel to the longitudinal axis of the frame.
The chassis is directly mounted on the main frame for rotation about the said third axis, the upperstructure being itself directly mounted on the said chassis, for rotation about the second axis.
The invention finds an application as a high output machine, in the mining of galleries with transversely inclined roofs.

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Description

~145779 Mine galleries are made, using in known manner, a machine which belongs to one of the two following types:
- machine known as a "continuous miner" which is provided with a mining member extending over the whole width of the galler~, and which is mounted at the end of an arm mounted to pivot with respect to the machine frame about a horizontal axis. Said machine has a high output, but itsapplication is limited to the working of galleries of rectangular cross-section;
- machine known as a "machine with pin,point stroke" which is provided with a mining member far less wide than that of the ~'continuous miner", mounted at the end an arm which arm is mounted for pivoting between two axes : one a horizontal axis and the other a vertical axis. The mining member in such a machine can reach virtually any point of the gallery thereby permitting to obtain any desired cross-sectionO
On the contrary, the small cutting surface of this mining member gives but a low output.
If the aim is to conciliate the facility of obtaining different shapes of cross-sections, with the high output obtained with the machine of the first type, it becomes necessary to design a new machineO
This is precisely the purpose of the invention whose object is an excavating machine constituted by:
- a mobile main frame, - an arm which supports a mining tool and is coupled to the main frame with interposition of a chassis-upperstructure assembly, on which it is mounted by means of an orientation device about a first axis, generally horizontal and transversal, and - the said chassis-upperstructure assembly proper, which is itself composed of:

~s77s - an orientable upperstructure which is rotatable with respect to the frame about a second axis, generally vertical and orthogonal to the first axis, and - a chassis, orientable with respect to the frame about a third axis, generally horizontal and paral].el to the longitudinal axis of the main frame.
The chassis is directly mounted on the main frame for rotation about the said third axis, the upperstructure being itself directly mounted on the said chassis, for rotation about the second axis~
Preferably, the machine also comprises the following advantageous arrangements:
- the third axis is eccentric with respect to the longitudinal median plane of the main frame;
- the main frame comprises two separate positions on either side of its longitudinal median plane, whereas the third axis is selectively situated in one of the said two positions;
ZO - the arm is mounted for pivoting on the upperstructure about the ~aid first axis;
- each orientation device about the first, second and third axes comprises means for keeping the position in the selected orientation, such as a hydraulic jack, coupled for relative rotation between two successive elementsO
The invention will be more readily understood on reading the following description with reference to the accompanying drawings, in which:
- Figure 1 is an elevational view of a machine according to the invention;
- Figure 2 is a view along arrow F of Figure l;
and - Figure 3 is a cross-section along III-III
of Figure 1.

~14S779 The machine illustrated in the Figures compris-es a main frame 1, provided with tracks 2 making it mobile. An auxiliary ch~ssis 3 is mounted on the frame 1. To this effect, the frame 1 is provided, in two separate positions symmetrical with respect to its median longitudinal plane P, with bores 4 adapted to receive horizontal axes of rotation 5, parallel to the longitudinal axis 6 of the frame 1. A hydraulic jack 7 is coupled between pivoting points 8 and 9 found respectively on the frame 1 and on the chassis 3. Two pivoting points 8 and two pivoting points 9 are provided, one of each kind, on either side of the symmetrical plane of the corresponding element - frame 1 or chassis 3.
The auxiliary chassis 3 thus has a pivoting clearance about the axis 5 received in one of the two bores 4, and its upper face 10 which is either horizontal(as shown in block lines in the drawings) or inclined with respect to the horizontal towards one or the other side of the frame 1 (as shown in broken lines in the drawings). In its configuration, wherein the face 10 is horizontal, the auxiliary chassis 3 supports an axis 11 which is vertical. Said axis 11 ensures the pivoting assembly of an upperstructure 12 which supports a fork with two branches 13.
Said fork with two branches 13 in turn supports the two-part pivoting axis 14, which is horizontal, when the face 10 of the chassis 3 is horizontal and which, when the fork 13 is situated symmetrically with respect to the plane P of the frame 1, extends transversely. Said axis 14 ensures the pivoting assembly of an arm 15 at the end of which two ore mining drums are mounted for rotation about an axis 17 parallel to the axis 14. Hydraulic jacks 18 coupled between the auxiliary chassis 3 and the upper-li4S779 structure 12 permit to adjust the orientation of the said upperstructure about the axis 11. In the same way, jacks 19, coupled between the upperstructure 12 and the arm 15, permit to adjust the orientation S of the said arm about the axis 14. Thus, the arm 15 can pivot in parallel to the plane P (shown in block lines in Figure 2), or obliquely with respect to that plane (as shown in broken lines in Figure 2), whereas the mining drums 16 can mine the ore close to the ground 20 (as shown in block lines in Figure l)o The illustrated machine further comprises a number of other arrangements. For example, a loader with tongs 22 is mounted to pivot with respect to the main frame 1 about a horizontal and transversal axis 15 23 and is positioned close to the area situated beneath and at the back of the mining drums 16. Said loader guides the mined products towards a discharge conveyor means 24 the dumping end 25 of which can pivot about a horizontal axis 38 in order to allow the adjusting of the products dumping heightO The end 25 can also pivot about an axis 26 which is perpendicular to the plane of the discharge conveyor 24. The machine further comprises lateral wedging shoes 27 which are adjustable (28) in position andadapted to come in 25 resting contact on the side walls 29 of the gallery in order to immobilize the machine during the mining operationO Immobilizing sole pieces 30, which are adjustable (39), are also provided to immobilize the machine with respect to the ground 20. Finally, 30 the frame 1 supports the various driving rneans : the electro-hydraulic unit 31, the reservoir 32, the hydraulic fluid cooling device 33, the driving station 340 In addition, the arm 15 supports the engine 35 driving the mining drums 16 and the reduction gear 35 assembly 36 situated between the engine 35 and the 3'~

' ' ~45779 said mining drumsO
The machine according to the invention works as explained hereafterO The most characteristic configuration is that where the mining operation is conducted according to a roof direction which is transversely inclined (Figure 3), thereby giving a general trapezoidal shape to the cross-section of the gallery. In order to allow the mining drums 16 to reach the roof 21, the operator causes the auxiliary chassis 3 to pivot about the axis 5 situated in the space 4 which corresponds to the required inclination, and then, by successive mining phases, he causes the upperstructure 12 to pivot about the axis 11. Thus the mining drums 16 reach the entire surface of the roof 21 and mine the ore in the desired directionO
Despite the large amount of dust caused by the mining operation, the operator cannot fail to move the mining drums in parallel to the direction of the roof 21 since this movement results f`rom the rotation of the upperstructure 12 about the axis 11 and is set once and for all before the mining opera-tion begins.
This eliminating all risks of the roof being cut into beyond the layer containing the o;re, or damaged if cut into at an undesigned spot, or of the ore layer being only incompletely minedO
Moreover, the mining power of the drums 16 is high, much higher than that of the mining member of a machine with "pinpoint stroke". And therefore the mining output is high.
~inally, the mining drums used have a cylindric-al cross~section and permit to produce joints 37 at substan~ally right angle between the side walls 29 and the ground 20. Such is not the case with the spherical- or truncated cone-shaped mining members used in the machines with "pin_point stroke" which ~i4S~79 only permit to obtain joints 37 constituted by curved blends of larse radius. The increase width between the joints 37, obtained with the rnachine described hereinabove, compared with a machine with llpin~point attack~ is therefore very important.
The invention is not limited to the embodiment described but on the contrary covers any variants that may be brought thereto without departing from the scope or the spirit thereof.

Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. Excavating machine constituted by:
- a mobile main frame, - an arm which supports a mining tool and is coupled to the main frame with interposition of a chassis-upperstructure assembly, on which it is mounted by means of an orientation device about a first axis, generally horizontal and transversal, and - the said chassis-upperstructure assembly proper, which is itself composed of:
- an orientable upperstructure which is rotatable with respect to the frame about a second axis, generally vertical and orthogonal to the first axis, and - a chassis, orientable with respect to the frame about a third axis, generally horizontal and parallel to the longitudinal axis of the main frame, wherein the chassis is directly mounted on the main frame for rotation about the said third axis, the upperstructure being itself directly mounted on the said chassis, for rotation about the second axis.

2. The machine of claim 1, wherein the third axis is eccentric with respect to the longitudinal median plane of the main frame.

3. The machine of claim 1, wherein the main frame comprises two separate positions on either side of its longitudinal median plane, whereas the third axis is selectively situated in one of the said two positions.

4. The machine of claim 2, wherein the main frame comprises two separate positions on either side of its longitudinal median plane, whereas the third axis is selectively situated in one of the said two positions.

5. The machine of claim 1, wherein the arm is mounted for pivoting on the upperstructure about the said first axis.

6. The machine of claim 2, wherein the arm is mounted for pivoting on the upperstructure about the said first axis.

7. The machine of claim 3, wherein the arm is mounted for pivoting on the upperstructure about the said first axis.

8. The machine of claim 4, wherein the arm is mounted for pivoting on the upperstructure about the said first axis.

9. The machine of any one of claims 1, 2 or 3, wherein each orientation device about the first, second and third axes comprises means for keeping the position in the selected orientation, such as a hydraulic jack, coupled for relative rotation between two successive elements.

10. The machine of any one of claims 4, 5 or 6, wherein each orientation device about the first, second and third axes comprises means for keeping the position in the selected orientation, such as a hydraulic jack, coupled for relative rotation between two successive elements.