GB2074215A - Mineral-mining installation - Google Patents
Mineral-mining installation Download PDFInfo
- Publication number
- GB2074215A GB2074215A GB8110712A GB8110712A GB2074215A GB 2074215 A GB2074215 A GB 2074215A GB 8110712 A GB8110712 A GB 8110712A GB 8110712 A GB8110712 A GB 8110712A GB 2074215 A GB2074215 A GB 2074215A
- Authority
- GB
- United Kingdom
- Prior art keywords
- machine
- conveyor assembly
- rack bar
- mine conveyor
- trapping
- 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.)
- Withdrawn
Links
- 238000005065 mining Methods 0.000 title claims abstract description 4
- 238000009434 installation Methods 0.000 title abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 11
- 239000011707 mineral Substances 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- 230000013011 mating Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/08—Guiding the machine
- E21C35/12—Guiding the machine along a conveyor for the cut material
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)
- Pusher Or Impeller Conveyors (AREA)
Abstract
A mineral-mining installation comprises a mineral winning machine M mounted on and/or guided by an armoured scraper chain conveyor 10 made up from a plurality of line pans 9 each comprising an elongate face side sidewall 18 spaced from a similar and parallel goaf side sidewall 17 by an interconnecting deckplate 19 to separate an upper, conveying run 20 from a lower, return run 21, a replaceable rack bar 32 secured to the face side sidewall 18 and approximating to the length of the pan 9, the rack bar 32 comprising a plurality of upwardly projecting pegs 33 located at regular pitch and extending from one longitudinal edge of the rack bar 32, and a trapping means 35 extending from the mineral winning machine M and slidably embracing the rack bar 32 to resist lateral displacement of the machine M with respect to the conveyor 10. <IMAGE>
Description
SPECIFICATION
Mine conveyor assembly
This invention relates to a mine conveyor assembly comprising a mineral winning machine mounted on and/or guided by an armoured scraper chain conveyor extending along a mineral face, the conveyor being of the kind conventionally assembled from a plurality of line pans connected together end-to-end.
According to the present invention a mine conveyor assembly comprises a mineral winning machine mounted on and/or guided by an armoured scraper chain conveyor made up from a plurality of line pans each comprising an elongate, face side sidewall spaced from a similar and parallel, goaf side sidewall by an interconnecting deckplate to separate an upper, conveying run from a lower, return run, a replaceable rack bar secured to the face side sidewall and approximating to the length of the pan, the rack bar comprising a plurality of upwardly projecting pegs located at regular pitch and extending from one longitudinal edge of the rack bar, and a trapping means extending from the mining machine and slidably embracing the rack bar to resist lateral displacement of the machine with respect to the conveyor.
The above defined arrangement is particularly suitable for an "in-web" machine where the machine is not mounted on the conveyor but is located beyond the face side sidewall of the conveyor, on the mine floor, being guided by the conveyor.
Preferably, the trapping means comprises a plate or shoe, e.g. bifurcated or defined by two spaced apart shoes, to lie adjacent and/or engage opposite sides of the rack bar. Preferably the latter projects above the face side sidewall, so that the rack bar can be located immediately adjacent that sidewall. Preferably, at least two spaced apart trapping means are provided on the machine. In detail a trapping means may be provided at each end of a machine haulage gearbox. Preferably, the rack bar is secured to the sidewall by bolts so that should wear or tooth damage occur, replacement may be effected in situ.
It is also preferred for the machine to incorporate a goaf side trapping means. This may be achieved by running a goaf side trapping rail or tube along the goaf side sidewalls and engaging the rail or tube with mating slide shoes carried by the machine.
In the known manner the machine haulage unit may comprise an endless chain, pockets in the chain being engaged by the pegs, or alternatively may comprise a sprocket wheel inter-engaging the pegs. Furthermore, haulage units may be provided towards one or both ends of the machine.
Preferably, the rack bar is manufactured from plate material by burning recesses in the plate to define the pegs. The latter may have a reaction surface on two opposite sides for engagement by a machine haulage unit(s). Each reaction surface, over at least a major part thereof, extends both laterally and perpendicularly to the longitudinal axis of the rack bar. The perpendicularity of the reaction surfaces is aimed at ensuring that when a driving load is imposed on those surfaces by a drive wheel(s) or an endless drive chain(s), there is no component of force tending to disengage the drive wheel(s) or drive chain(s) from the rack bar.
The rack bar may be sandwiched between a ramp plate and the face side sidewall, e.g. by bolts.
Machine guidance may also be effected at the face side by means of a depending leg terminating in a trapping shoe engaging a trapping rail supported from a floor engaging toe plate by intermediate webs, the toe plate being welded to the rack bar and the latter being bolted to the face side sidewall. Conveniently, the intermediate webs are apertured to receive heavy duty connecting bolts whereby the reaction of the haulage unit(s) is transmitted to a plurality of pans, while furthermore the conveyor length at the face side sidewall is maintained generally constant so as to maintain the peg pitch.
The invention will now be described in greater detail, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a side elevation, from goaf to face of a mine conveyor assembly in accordance with the invention, and
Figure 2 is an enlarged side elevation of the assembly of Figure 1.
In the drawings is shown a longwall mineral face 1 of a mineral seam 2 defined between a mine roof 3 and a mine floor 4. Along the face 1 are provided a plurality of hydraulically extensible roof supports 5 comprising a roof beam 6 engaging the roof 2 and a base means 7 seating on the floor 4, the roof beam 6 being supported from the base means 7 by a plurality of hydraulically extensible chock legs 8 (one only illustrated). In the conventional manner the roof supports 5 are connected by double-acting advancing rams and relay bars (not shown) to individual line pans 9, e.g. of 5 ft. length, secured together end-to-end to define an armoured scraper chain conveyor 10 of a length corresponding to that of the face 1, with a drive head mounted at one or both ends of the conveyor.An "in-web" mineral winning machine
M is located between the conveyor 10 and the mineral face 1, and comprises a motor housing 11 , a haulage housing 12, a haulage gearbox 13, and at each end of the machine M a gearhead 1 4 carrying a ranging arm 15 terminating in a rotary cutting head 1 6.
Each individual line pan 9 comprises a sigma section goaf side sidewall 1 7 spaced from a similar face side sidewall 1 8 by an interconnecting deck plate 1 9 which separates an upper, conveying run 20 from a lower return run 21. For clarity the chain(s) and flight bars of the conveyor have been omitted. To the goaf side sidewall 17 is bolted a support plate 22 carrying firstly a trapping beam 23 and secondly a spill plate 24 for services e.g. electric cables and water hoses, required by the machine M which is partly guided
from the conveyor 10 at the goaf side by means of
a bridge 25 and a depending claw 26 embracing
the trapping beam 23 supported from the goaf
side sidewall 17.Machine guidance is also
effected at the face side by means of a depending
leg 27 terminating in a trapping shoe 28 engaging
a trapping rail 29 supported from a toe plate 30 by
intermediate webs 31, the toe plate 30 being
welded to a rack bar 32 approximating to the
length of the pan 9 bolted to the face side sidewall 1 8 and comprising a plurality of upwardly
projecting pegs 33 located at regular pitch and
extending from one longitudinal edge of the rack
bar, the pegs 33 being engageable by an endless
haulage chain 34 of the gearbox 1 3. At each end
of the gearbox 13 is provided a trapping means 35
comprising two individual shoes 36 extending
from the machine 11 and so spaced apart as to
embrace opposite sides of the rack bar 32, as
shown in Figure 2, thereby resisting any tendency
for the machine 11 to be laterally displaced, with
respect to the conveyor 10, whether by mineral
cutting forces applied to the machine 11 or
otherwise. The intermediate webs 31 are provided
towards the end of each pan 9 and are apertured,
so that adjacent webs 31 may receive a common,
heavy duty connecting bolt 37 to transmit the
reaction of the haulage chain 34 to a plurality of
pans 9 and to maintain the length of the conveyor
10 at the face side sidewall 1 8 generally constant
so as to maintain the pitch of the pegs 33.
Claims (14)
1. A mine conveyor assembly comprising a mineral winning machine mounted on and/or guided by an armoured scraper chain conveyor made up from a plurality of line pans each comprising an elongate, face side sidewall spaced from a similar and parallel, goaf side sidewall by an interconnecting deckplate to separate an upper, conveying run from a lower, return run, a replaceable rack bar secured to the face side sidewall and approximating to the length of the pan, the rack bar comprising a plurality of upwardly projecting pegs located at regular pitch and extending from one longitudinal edge of the rack bar, and a trapping means extending from the mining machine and slidably embracing the rack bar to resist lateral displacement of the machine with respect to the conveyor.
2. A mine conveyor assembly as claimed in
Claim 1 , wherein the trapping means comprises a bifurcated plate or shoe.
3. A mine conveyor assembly as claimed in
Claim 1, wherein the trapping means comprises two spaced apart shoes.
4. A mine conveyor assembly as claimed in any preceding Claim, wherein at least two spaced apart trapping means are provided on the machine.
5. A mine conveyor assembly as claimed in
Claim 4, wherein a trapping means is provided at each end of a machine haulage gearbox.
6. A mine conveyor assembly as claimed in any preceding Claim, wherein the rack bar projects above the face side sidewall.
7. A mine conveyor assembly as claimed in any preceding Claim, wherein the rack bar is secured to the sidewall by bolts.
8. A mine conveyor assembly as claimed in any preceding Claim, wherein the machine incorporates a goaf side trapping means.
9. A mine conveyor assembly as claimed in
Claim 8, wherein a goaf side trapping rail or tube is run along the goaf side sidewall of the conveyor, which trapping rail or tube is engaged with mating slide shoes carried by the machine.
10. A mine conveyor assembly as claimed in any preceding Claim, wherein the machine comprises a motor housing, a haulage housing, a haulage gearbox and, at each end of the machine a gearhead carrying a ranging arm terminating in a rotary cutting head.
11. A mine conveyor assembly as claimed in
Claim 10, wherein the haulage gearbox comprises an endless haulage chain, pockets in the chain being engaged by pegs of the rack bars.
12. A mine conveyor assembly as claimed in any preceding Claim, wherein machine guidance is also effected at the face side by means of a depending leg terminating in a trapping shoe engaging a trapping rail supported from a floor engaging toe plate by intermediate webs, the toe plate being welded to the rack bar and the latter being bolted to the face side sidewall.
13. A mine conveyor assembly as claimed in
Claim 12, wherein the intermediate webs are apertured to receive heavy duty connecting bolts.
14. A mine conveyor assembly substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8110712A GB2074215A (en) | 1980-04-18 | 1981-04-06 | Mineral-mining installation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8012821 | 1980-04-18 | ||
GB8110712A GB2074215A (en) | 1980-04-18 | 1981-04-06 | Mineral-mining installation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2074215A true GB2074215A (en) | 1981-10-28 |
Family
ID=26275221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8110712A Withdrawn GB2074215A (en) | 1980-04-18 | 1981-04-06 | Mineral-mining installation |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2074215A (en) |
-
1981
- 1981-04-06 GB GB8110712A patent/GB2074215A/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |