GB2166779A - Rotary cutter heads for mine winning machines - Google Patents
Rotary cutter heads for mine winning machines Download PDFInfo
- Publication number
- GB2166779A GB2166779A GB08428592A GB8428592A GB2166779A GB 2166779 A GB2166779 A GB 2166779A GB 08428592 A GB08428592 A GB 08428592A GB 8428592 A GB8428592 A GB 8428592A GB 2166779 A GB2166779 A GB 2166779A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cutter
- head
- cut mineral
- cutter head
- rotation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 54
- 239000011707 mineral Substances 0.000 claims abstract description 54
- 238000005065 mining Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000063 preceeding effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/10—Rods; Drums
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/14—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate with equipment for cleaning the slit
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A rotary cutter head for a mining machine is provided with cut mineral guide components (3) defining at least two cut mineral guide paths associated with opposite directions of rotation of the cutter head, respectively. <IMAGE>
Description
SPECIFICATION
Rotary cutter heads for mine winning machines
This invention relates to rotary cutter heads for mine winning machines.
In particular, although not exclusively, the present invention relates to rotary cutter heads for shearer type mine winning machines which, in use, traverse too and fro along longwall faces winning mineral from the working faces. In order to load the cut mineral on to a conveyor extending along the longwall face each cutter head is provided with at least one spiral loading element which as the head rotates urges the cut mineral towards the conveyor.
Frequently, the shearer type machine comprises leading and trailing rotary cutter heads which, in order to cut and load mineral efficiently, are required to rotate in opposite directions. Consequently, in order for the spiral loading elements of both heads to load mineral efficiently, the spirals must be of opposite hands. As it is usual underground mine practice to carry a spare for each different item of equipment used on a longwall face, it is necessary to carry two spare cutter heads, i.e. one for each hand of the spiral loading element.
An object of the present invention is to provide an improved rotary cutter head capable of cutting and loading mineral efficiently irrespective of the direction of rotation.
According to the present invention a rotary cutter head for a mine winning machine comprises a hub drivably mountable on a drive shaft of the machine, q barrel component fixedly mounted around the hub, cutter tool holders provided around the barrel and adapted, in use, to cut mineral from a working face as the cutter head is rotated, and a plurality of cut mineral guide components mounted on the barrel, the cut mineral guide components defining at least two cut mineral guide paths associated with opposite directions of rotation of the cutter head, respectively.
Preferably, at least one cut mineral guide component comprises two cut mineral guide surfaces defining two cut mineral guide path sections associated with opposite directions of rotation of the cutter head, respectively.
Conveniently, said at least one cut mineral guide component is generally 'V' shape in plan, the outwardly directed faces of the limbs defining said two cut mineral guide path sections.
Advantageously, the base of the generally 'V' shape guide component is directed towards the machine side of the cutter head.
Preferably, at least some of the cutter tool holders are mounted on the cut mineral guide component.
Advantageously, some of the cutter tool holders are for cutter tools associated with one direction of rotation of the cutter head and some other cutter tool holders are for cutter tools associated with the opposite direction of rotation.
Conveniently, some of the cutter tool holders are for supporting cutter tools irrespectively of the direction of rotation of the cutter head.
Preferably, the barrel is generally frusto conical, being tapered inwardly towards the machine side of the cutter head.
By way of example, one embodiment of the present invention will be described with reference to the accompanying drawings, in which:
Figure 1 is an incomplete diagrammatic perspective view of a rotary cutter head constructed in accordance with the present invention. Cutter tool holders having been omitted from the drawing for the sake of clarity;
Figure 2 is a cutter tool lacing diagram indicating the position of the cutter tool holders and the cut mineral guide components, the direction of rotation of the cutter head being as indicated by arrow X;
Figure 3 is a cutter tool lacing diagram similar to Figure 2 but with the direction of rotation of the cutter head being as indicated by arrow Y.
Referring to the drawings, a rotary cutter head for mounting on a well known shearer type mine winning machine comprises a generally frusto conical barrel component 1 which is tapered inwardly towards the machine side 2 of the cutter head. The barrel is fixedly mounted around a hub (not shown) adapted for drivably mounting on a drive shaft of the mining machine. A plurality of cut mineral guide components 3 are fixedly mounted around the barrel component, each guide component 3 being of generally 'V' or 'chevron' shape in plan view and arranged with the base of 'V' directed towards the machine side 2 of the cutter head. Each guide component 3 is arranged to overlap the next preceeding and next trailing guide component irrespective of the direction of rotation of the cutter head.
The outwardly directed faces 4, 5 of the limbs of each 'V' shaped guide component define two cut mineral guide path sections, respectively. Each face 4 defines a cut mineral guide path section when the cutter head is rotating in a direction Y as indicated in Figure 1 and each face 5 defines a cut mineral guide path section when the cutter head is rotating in a direction X as indicated in Figure 1.
The side 6 of the cutter head remote from the mining machine is provided with an annular plate 7 for carrying a plurality of cutter tool holders as will be explained later in the specification with reference to Figures 2 and 3. In
Figure 1 the cutter tool holders have been omitted for the sake of clarity.
Figures 2 and 3 are cutter tool holder lacing diagrams corresponding to the directions of rotation of the cutter head indicated by arrows
X and Y, respectively.
The cutter head is provided with cutter tool holder, holders 10 and 12 are identical the only difference being that holders 12 are adapted to hold tools directed towards the left hand side of Figure 3 which holders 10 are adapted to hold tools directed towards the right hand side of Figure 2. Holders 14 are adapted to hold cutter tools which can be turned through 1800 to suit the direction of rotation ie cutting of the cutter head. All the cutter tool holders 10, 12 and 14 may be of similar construction.
As indicated in the lacing diagram the tool holders 12 and 14 are mounted on the cut mineral guide components 3 with the holders 12 mounted on the limbs defining the faces 4 and the holder 14 mounted on the limbs defining the faces 5. The holders 14 are mounted either adjacent to the base of the 'V' shaped guide components 3 or on the annular plate 7.
In use, with the cutter head rotating in the direction indicated by arrow X (see particularly
Figure 2), the holders 10 are provided with cutter tools 11 directed towards the right hand side of the Figure. Also the holders 14 are provided with cutter tools 15 directed towards the right hand side of the Figure. Thus, as the cutter head rotates the cutter tools win mineral from the working face. The cut mineral falls in front of a face 5 defining a cut mineral guide path section and thereby the cut mineral is urged by the moving guide component 3 towards the machine side of the cutter head.Upon reaching the base of a particular guide component the cut mineral either is urged further towards the machine side 3 of the cutter head by the next following guide component 3 which is arranged to longitudinally overlap the first mentioned guide component or, if the cut mineral is adjacent to the face side of the cutter head, it is discharged on to the conveyor and conveyed along the longwall face towards a main roadway transport system. Thus, it will be appreciated that the accumulation effect of the sum of all the cut mineral guide path sections when the cutter head is rotating in the direction indicated by arrow X is to define a number of cut mineral guide paths urging the cut mineral towards the machine side of the cutter head and towards the conveyor.
With the cutter head rotating in the direction
X as indicated in Figure 2 the cutter tool holders 12 provide recess means (indicated by broken lines 13) for cutter tools, and the holders 14 provide means (indicated by broken lines 16) for cutter tools opposed to cutter tools 15. However, with the head rotating in the direction X no cutter tools are mounted in means 13 and 16.
Figure 3 shows the cutter tool lacing diagram for the cutter head rotating in the direction indicated by arrow Y. In this instance, cutter tools 13 are mounted in the holders 12, and cutter tools 16 are mounted in the holders 14, the cutter tools 13, 16 being directed towards the left hand side of Figure 3.
The cutter tools 11 are omitted from the holders 10 and the previously mentioned cutter tools 15 now are turned round to constitute cutter tools indicated by 16. However, the previous positions of the cutter tools are indicated by broken lines 11' and 15'.
With the cutter head rotating in the direction
Y as indicated in Figure 3 the cutter tools 13 and 16 win mineral from the working face.
The cut mineral falls in front of the face 4 defining a cut mineral guide path section and thereby the cut mineral is urged by the moving guide component 3 towards the machine side of the cutter head. Upon reaching the base of a particular guide component the cut mineral either is urged further towards the machine side 3 of the cutter head by the next following guide component 3 which is arranged to longitudinally overlap the first mentioned guide component or, if the cut mineral is adjacent to the face side of the cutter head, it is discharged on to the conveyor conveyed along the longwall face towards the main roadway transport system. Thus, it will be appreciated that the accommodation effect of the sum of all the cut mineral guide path sections when the cutter head is rotated in the direction indicated by arrow Y is to define a number of cut mineral paths urging the cut mineral towards the machine side of the cutter head and towards the conveyor.
From the above description it will be seen that the cut mineral guide components provided on the cutter head according to the present invention define at least two cut mineral guide paths associated with opposite directions of rotation of the cutter head, respectively.
Claims (8)
1. A rotary cutter head for a mine winning machine comprising a hub drivably mountable on a drive shaft of the machine, a barrel component fixedly mounted around the hub, cutter tool holders provided around the barrel and adapted, in use, to cut mineral from a working face as the cutter head is rotated, and a plurality of cut mineral guide components mounted on the barrel, the cut mineral guide components defining at least two cut mineral guide paths associated with opposite directions of rotation of the cutter head, respectively.
2. A head as claimed in claim 1, in which at least one cut mineral guide component comprises two cut mineral guide surfaces defining two cut mineral guide path sections associated with opposite directions of rotation of the cutter head, respectively.
3. A head as claimed in claim 2, in which said at least one cut mineral guide component is generally 'V' shape in plan, the outwardly directed faces of the limbs defining said two cut mineral guide path sections.
4. A head as claimed in claim 3, in which the base of the generally 'V' shape guide component is directed towards the machine side of the cutter head.
5. A head as claimed in any one of the preceding claims, in which at least some of the cutter tool holders are mounted on the cut mineral guide component.
6. A head as claimed in any one of the preceding claims, in which some of the cutter tool holders are for cutter tools associated with one direction of rotation of the cutter head and some other cutter tool holders are for cutter tools associated with the opposite direction of rotation.
7. A head as claimed in any one of the preceding claims, in which at least some of the cutter tool holders are for supporting cutter tools irrespectively of the direction of rotation of the cutter head.
8. A head as claimed in any one of the preceding claims, in which the barrel is generally frusto conical, being tapered inwardly towards the machine side of the cutter head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08428592A GB2166779B (en) | 1984-11-13 | 1984-11-13 | Rotary cutter heads for mine winning machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08428592A GB2166779B (en) | 1984-11-13 | 1984-11-13 | Rotary cutter heads for mine winning machines |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8428592D0 GB8428592D0 (en) | 1984-12-19 |
| GB2166779A true GB2166779A (en) | 1986-05-14 |
| GB2166779B GB2166779B (en) | 1987-10-21 |
Family
ID=10569628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08428592A Expired GB2166779B (en) | 1984-11-13 | 1984-11-13 | Rotary cutter heads for mine winning machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2166779B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950635A (en) * | 1960-04-23 | 1964-02-26 | Eickhoff Geb | Improvements in or relating to mining machines having drum-type cutters |
-
1984
- 1984-11-13 GB GB08428592A patent/GB2166779B/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950635A (en) * | 1960-04-23 | 1964-02-26 | Eickhoff Geb | Improvements in or relating to mining machines having drum-type cutters |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8428592D0 (en) | 1984-12-19 |
| GB2166779B (en) | 1987-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |