GB2084220A - Mining machines - Google Patents
Mining machines Download PDFInfo
- Publication number
- GB2084220A GB2084220A GB8031153A GB8031153A GB2084220A GB 2084220 A GB2084220 A GB 2084220A GB 8031153 A GB8031153 A GB 8031153A GB 8031153 A GB8031153 A GB 8031153A GB 2084220 A GB2084220 A GB 2084220A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- ranging
- ranging arm
- mining machine
- machine
- 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
- 238000005065 mining Methods 0.000 title claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 12
- 238000005755 formation reaction Methods 0.000 claims abstract description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/02—Machines which completely free the mineral from the seam solely by slitting
-
- 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
- E21C25/08—Mountings for the rods or drums
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/10—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for slewing parts of the machines
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)
- Geophysics And Detection Of Objects (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A ranging drum mining machine comprises a ranging arm (8) for the rotary drum (10) supported by a pivotal mounting (12) provided on the machine body (1), the pivotal mounting comprising two bearing formations (22 and 23) associated with opposite sides of the ranging arm, respectively. <IMAGE>
Description
SPECIFICATION
Mining machines
This invention relates to mining machine.
In particular, although not exclusively, the present invention relates to mining machines which in use wins mineral from a longwall face and which comprises a rotary cutter head carried on a ranging arm pivotally mounted for vertical movement of the cutter on the machine body. In operation the machine repeatedly traverses to and fro along the longwall face with the cutter head in raised and lowered modes, respectively.
With a known mining machine the ranging arm comprises a housing pivotally mounted at one side to the machine body and a gear arrangement for transmitting drive from a motor provided on the machine body to the cutter head, the gear arrangement including a drive shaft extending along the pivotal axis of the ranging arm mounting and projecting from the machine body into the gearbox housing defined by the ranging arm. Unfortunately, such ranging arm support is tending to be found unsuitable for use with the relatively high powered machine recently introduced into underground mining practise and failure of the pivot mounting for the arm is tending to be a relatively frequent occurrence.
An object of the present invention is to provide an improved mining machine which tends to overcome the above mentioned problems.
According to the present invention a mining machine comprises a body housing a drive motor for a rotary cutter head carried on a ranging arm supported by a pivotal mounting provided on the machine body, the pivotal mounting comprising two bearing formations associated with opposed sides of the ranging arm, respectively.
Preferably, the bearing formation comprise cylindrical components for engagement by bearing formations associated with the op' posed sides of the ranging arm, respectively.
Preferably, the cylindrical components of the bearing formation on the machine body are mounted internally the associated bearing formations associated with the ranging arm.
Conveniently, ranging of the arm is controlled under the action of a ram mounted at one end on the machine body and connected at the other end to a pivot plate assembly provided on the arm.
Preferably, the pivotal axis of the ranging arm substantially is horizontal and the pivot plate assembly provided on the arm is intermediate the two opposed sides of the ranging arm when viewed in a direction normal to the pivotal axis of the arm.
By way of example only, one embodiment of the present invention will now be described with reference to the accompanying drawings, in which: Figure 1 is a plan of a mining machine constructed in accordance with the present invention a portion of the drawing being shown in cross-section;
Figure 2 is a side elevation of Fig. 1;
Figure 3 is an end elevation of Fig. 1; and
Figure 4 is a cross-sectional view taken through a portion of the mining machine, the drawing being on an enlarged scale compared to the previous Figs. 1, 2 and 3.
In the drawings, a double ended ranging drum shearer constructed in accordance with the present invention is shown to comprise a body 1 carried on shoes 2 (see Fig. 2) arranged to guidably slide along an armoured flexible conveyor 3 extending along a longwall face in a mineral seam. Only a section of the conveyor pans is shown in the drawing, the chain and flights being omitted for the sake of clarity. Driven sprockets 4 provided on the side of the machine body have teeth or abutments (not shown) for drivable engagement with a series of formations provided on a fixed track 5 secured to the conveyor.In operation, each sprocket is driven by a motor (not shown) provided in a haulage unit 7 mounted one at each end of the machine body to repeatedly traverse the machine to and fro along the longwall face such that rotating cutter heads on drums 8 and 9 carried on ranging arms 10 and 11 win mineral from the working mineral face. As indicated adjacent to the left hand margin of Fig. 2 each cutter head can be raised or lowered into alternate operational modes by ranging the associated ranging arm about its pivotal mounting 12 provided outboard of the working face side of the machine body.Pivotal movement of each ranging arm is controlled by a pair of hydraulic rams 1 3 connected between pivotal mountings 1 4 provided on the machine body and pivotal mounting pin assemblies 1 5 provided on a pivot plate assembly comprising a pair of plates 1 6 provided on opposite sides of the associated ranging arm, respectively. Figs. 1 and 3 show the pivotal mounting on the pivot plate assembly to be located intermediate the two opposed vertial sides of the ranging arm when viewed in a direction normal to the pivotal axis of the ranging arm.
Each pivotal pin assembly 1 5 comprises a central through pin extending across the gap between the two plates 1 6 and two sleeve components arranged around the through pin and mounted on opposite sides of a pivot clevis 20 fixedly attached to the end of the piston rod 21 of the associated ram 1 3.
Each pivotal mounting 1 2 comprises two inwardly directed support bearings mounted on opposite sides of the ranging arm, respectively. Each support bearing comprising a generally cylindrical bearing member 22, 23 (see
Figs. 1 and 4 which internally engages an associated outer annular bearing component 24, 25 provided on the ranging arm, the bearing components 24, 25 being associated with opposed sides of the ranging arm, respectively.
Each bearing member 22 forms part of the outer housing member 26 which extends along the machine body to be fixedly secured to the machine body such that the associated bearing member provides substantiai support to the ranging arm. The bearing members 23 are provided on the machine side of the associated ranging arm and are mounted in the side wall of the machine body.
The drive for each of the rotary cutter heads 8, 9 is transmitted from a motor housed within motor section 30 on the machine body via gearing 31 housed within an associated gearbox 32 to a shaft 29 drivably supporting a spur gear wheel 34 which in turn drivably engages a train of gears 35 extending along the ranging arm (see particularly Fig. 4) to a hollow drive shaft 36 extending along the axis of the rotary cutter head. The drive shaft is drivably connected to the cutter head via two epicyclic reduction gear arrangements 37 and 38 mounted in a gearbox 42 located within the hub 39 of the cutter head. The hollow drive shaft 36 permits a ventilating air flow to be induced towards the working face.
From Fig. 1 it can be seen that the drive shaft 29 is supported in bearings 40 and 41 provided within the gearbox 32 but is not supported by the portion of the pivotal mounting 1 2 on the working face side of the ranging arm.
It will be appreciated that in operation as the machine traverses to and fro along the longwall face winning mineral from the working face the pivotal mounting 1 2 for each ranging arm is capable of withstanding the rigours and reaction forces associated with the cutter head winning mineral. Thus failure of a pivotal mounting 1 2 tends to be a relatively infrequent occurrence and the loss to mineral production due to breakdown is relatively low.
In other embodiments of the invention, the mining machine comprises only one ranging arm carrying cutter.
Claims (6)
1. A mining machine comprising a body housing a drive motor for a rotary cutter head carried on a ranging arm supported by a pivotal mounting provided on the machine body, the pivotal mounting comprising two bearing formations associated with opposed sides of the ranging arm, respectively.
2. A mining machine as claimed in claim 1, in which the bearing formation comprise cylindrical components for engagement by bearing formations associated with the opposed sides of the ranging arm, respectively.
3. A mining machine as claimed in claim 2, in which the cylindrical components of the bearing formation on the machine body are mounted internally the associated bearing formation associated with the ranging arm.
4. A mining machine as claimed in claim 1, 2 or 3, in which ranging of the arm is controlled under the action of a ram mounted at one end on the machine body and connected at the other end to a pivot plate assembly provided on the arm.
5. A mining machine as claimed in claim 4, in which the pivotal axis of the ranging arm substantially is horizontal and the pivot plate assembly provided on the arm is intermediate the two opposed sides of the ranging arm when viewed in a direction normal to the pivotal axis of the arm.
6. A mining machine substantially as described herein and substantially as shown in the accompanying drawings.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8031153A GB2084220B (en) | 1980-09-26 | 1980-09-26 | Mining machines |
| DE19813135625 DE3135625A1 (en) | 1980-09-26 | 1981-09-09 | EXTRACTION MACHINE |
| FR8117519A FR2491124A1 (en) | 1980-09-26 | 1981-09-16 | ROTARY DRUM MINE MACHINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8031153A GB2084220B (en) | 1980-09-26 | 1980-09-26 | Mining machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2084220A true GB2084220A (en) | 1982-04-07 |
| GB2084220B GB2084220B (en) | 1984-01-25 |
Family
ID=10516312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8031153A Expired GB2084220B (en) | 1980-09-26 | 1980-09-26 | Mining machines |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3135625A1 (en) |
| FR (1) | FR2491124A1 (en) |
| GB (1) | GB2084220B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4889393A (en) * | 1987-11-14 | 1989-12-26 | Gebr. Eickhoff Maschinenfabrik U. Eisengieberei Mbh | Drum cutter-loader for underground mining machine |
| US7350875B2 (en) | 2005-04-15 | 2008-04-01 | Dbt Gmbh | Underground mining machine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1232245A (en) * | 1958-08-14 | 1960-10-06 | Eickhoff Geb | Coal mining machine |
| DE1229947B (en) * | 1962-03-22 | 1966-12-08 | Eickhoff Geb | Roller shaving machine with shaving rollers arranged in a height-adjustable manner on one longitudinal side of the machine housing |
| FR1499261A (en) * | 1966-08-17 | 1967-10-27 | Houilleres Bassin Du Nord | Felling plant in which the tools are driven by the movement of a chain or cable |
| GB1193178A (en) * | 1967-12-16 | 1970-05-28 | Mavor & Coulson Ltd | Improvements in or relating to Mining Machines |
| DE2731586C2 (en) * | 1977-07-13 | 1982-04-01 | Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum | Roller cutting machine, the cutting rollers of which are each held by a support arm |
| DE2732275C2 (en) * | 1977-07-16 | 1983-01-13 | Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum | Roller cutting machine, especially for mining low seams |
| DE2733483C2 (en) * | 1977-07-25 | 1982-10-07 | Pitcraft Summit Ltd., Barnsley, Yorkshire | Gear head for cutting machine |
| DE2754862C2 (en) * | 1977-12-09 | 1981-10-01 | Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum | Roller cutting machine, especially for low seams |
| DE2900273C2 (en) * | 1979-01-05 | 1982-12-30 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Extraction machine for mining seams or the like. |
-
1980
- 1980-09-26 GB GB8031153A patent/GB2084220B/en not_active Expired
-
1981
- 1981-09-09 DE DE19813135625 patent/DE3135625A1/en not_active Ceased
- 1981-09-16 FR FR8117519A patent/FR2491124A1/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4889393A (en) * | 1987-11-14 | 1989-12-26 | Gebr. Eickhoff Maschinenfabrik U. Eisengieberei Mbh | Drum cutter-loader for underground mining machine |
| US7350875B2 (en) | 2005-04-15 | 2008-04-01 | Dbt Gmbh | Underground mining machine |
| CN1847614B (en) * | 2005-04-15 | 2012-05-02 | Dbt有限公司 | Underground mining machine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2084220B (en) | 1984-01-25 |
| DE3135625A1 (en) | 1982-04-15 |
| FR2491124A1 (en) | 1982-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4159055A (en) | Gathering head | |
| US3774969A (en) | Continuous mining machine | |
| US3730593A (en) | Continuous mining machine | |
| US4166652A (en) | Mining machine, particularly for the working of low mine seams | |
| US2776823A (en) | Rotating cutter and core breaker for continuous miner | |
| US4189188A (en) | Drum cutter mining machine | |
| US3197256A (en) | Continuous mining machine with loading means | |
| GB2084220A (en) | Mining machines | |
| US5921632A (en) | Method and apparatus for extending the cutter drum of a boring machine | |
| US3817579A (en) | Mining machine | |
| GB1564394A (en) | Drive frame for mining apparatus | |
| US4253705A (en) | Continuous mining machine having a boom member with a fixed material dislodging means | |
| US4225189A (en) | Continuous mining machine and cutter drum drive therefor | |
| US3848930A (en) | Continuous mining machine with drive to angled end sections | |
| US3874735A (en) | Mining machine | |
| US3844618A (en) | Mining machine having rotary motor extended cutter head | |
| US2866626A (en) | Mining machine provided with adjustable cutting means | |
| US4270803A (en) | Cutter drum drive assembly for canted end sections | |
| US3141703A (en) | Continuous mining machine of the ripper type | |
| US4162103A (en) | Drive arrangements for mining machines | |
| US4582363A (en) | Drive assembly for mining machine cutter drum | |
| CA1165338A (en) | Mining machine | |
| US4548444A (en) | Mineral winning plough | |
| US2868528A (en) | Boring type mining machine having drum type cusp cutter | |
| GB2104574A (en) | A mining machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920926 |