EP0176235A1 - Mining machine - Google Patents
Mining machine Download PDFInfo
- Publication number
- EP0176235A1 EP0176235A1 EP85306000A EP85306000A EP0176235A1 EP 0176235 A1 EP0176235 A1 EP 0176235A1 EP 85306000 A EP85306000 A EP 85306000A EP 85306000 A EP85306000 A EP 85306000A EP 0176235 A1 EP0176235 A1 EP 0176235A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boom
- collar
- machine
- valve
- water
- 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 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000007921 spray Substances 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims abstract description 5
- 230000000737 periodic effect Effects 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
- E21C35/23—Distribution of spraying-fluids in rotating cutter-heads
Definitions
- This invention relates to a mining machine of the kind adapted to drive underground roadways, tunnels or headings, commonly known as a roadheader machine.
- such a machine comprises a self-propelled, crawler or wheel-mounted chassis carrying a displaceable boom, a terminal end of which is provided with a rotary cutting head, the latter being driven from a power unit carried by the chassis, via a transmission including a final drive shaft extending longitudinally of the boom and rotatably supported in bearings carried by a stationary, outer casing of the boom.
- the boom is power-displaced e.g. hydraulically, by the machine operator so that the boom follows the profile required for the roadway etc.
- the cutting heads being provided with replaceable cutter picks, they are also provided with a plurality of nozzles to emit a water spray or jet, while the nozzles may, in practice be mounted on the heads and/or on the picks.
- the water spray or jet may be for purposes such as pre-start warning, dust suppression, pick face flushing, incendive sparking elimination and, at higher pressures, water jet assisted cutting. It will be appreciated however that only a certain sector of the periphery of the cutting head is in the cut at any one time and consequently, and if as is usually the case, water is emitted over 360° a substantial proportion of the water e.g. 50%, has no beneficial effect but represent a waste, not only of water, but of power consumed in generating the pressure (which, in the case of water jet assisted cutting, may be of the order of 30,000 p.s.i.), apart from creating unnecessarily wet floor conditions. Attempts have been made to provide valving arrangements to achieve phased emission, but such systems have yet to be proved and are relatively complex to instal, maintain and adjust.
- the object of the present invention is to provide a roadheader type mining machine in which the emission of water sprays or jets may be readily phased in a desired radially extending sector by simple control of valving arrangements.
- a roadheader type mining machine comprising a self-propelled chassis, an elongate boom having a longitudinal axis, the boom being supported by the chassis for powered positional adjustment with respect to the chassis, a terminal end of the boom provided with a rotary cutting head having a plurality of nozzles each to emit a water spray or jet, water conveying conduits connectable between the nozzles and a source of pressurised water and an on/off water flow control valve associated with each conduit, and a collar surrounding at least a portion of the boom about an axis co-axial with the boom longitudinal axis and being rotatable about this axis by power means to a selected position, the collar carrying, and/or positionally controlling, valve actuation means whereby periodic water supply to the nozzles, due to head rotation, within a selected radial sector is controllable by the valves, phased activation of which is controlled by positional adjustment of the collar to provide appropriate positional adjustment of the valve actuation means.
- the invention provides a roadheader type mining machine in which water phasing only to a selected radial sector (normally the cutting sector) of the cutting head, is readily attained simply by appropriate re-positioning of the collar, by rotation, from a previous angular position (appropriate to a previously selected sector) to a new, static, position that results in phased water emission over only the selected sector, thereby maximising the efficient use of water.
- the head is attached to one end of a drive shaft extending longitudinally of the boom and rotatably supported in bearings carried by a stationary outer casing of the boom, the drive shaft forming part of a power transmission from a power unit of the chassis to the cutting head.
- the power means to rotate the collar to its desired angular position with respect to non-rotational portions of the boom may for example be an hydraulic motor or an e- ctric motor, and either type of motor may drive the collar through a gearbox, which may be of a speed reduction kind.
- a gearbox which may be of a speed reduction kind.
- journal bearings may be interposed between the collar and a portion of the outer casing of the boom, while for higher loadings/pressures e.g. 30,000 p.s.i., roller bearings may be provided.
- Collar re-positioning (by rotation of collar about the boom axis), to result in sector selection variations, to suit positional variations of the boom and hence the cutting head, may be controlled by any of several alternative procedures.
- collar rotation may be controlled directly by activation of hand controls by the machine operator, provided the machine operator has sight of the cutting head and/or the boom.
- automatic collar rotational control may be effected by attaching transducers to the boom (to register directionally, load or stresses within the boom) and/or the cutting head and/or the cutting picks and/or the conventional hydraulic control circuitry of the boom (to register flow and/or pressure changes) to sense the sector of the head that is effecting cutting, the transducers being connected to electrical and/or hydraulic control circuitry to instigate collar rotation.
- the transducers may be of a pressure sensing kind and/or a movement sensing kind.
- the boom may be provided with a trailing arm or a link mechanism in contact with the cut, to sense the location of the cut and hence the sector of the drum that is effecting cutting, with collar rotation, to achieve its desired re-positioning, being controlled through suitable control circuitry by movements of the arm or link mechanism.
- this program may be modified to control additionally collar positioning, as the sector in the cut is pre-determined.
- the valve actuating means preferably comprises an operating lever attached to each valve, the levers, in a first embodiment, being positionally controlled by a cam track of the collar.
- the cam track may be machined into the collar, or releasably attached to the collar so as to be readily changeable when a change in the angles of the water emitting, or non-emitting, segments is reuired.
- the cam track may be provided in an inwardly extending, annular flange of the collar located adjacent the cutting head.
- valve operating levers are engagable by two angularly spaced-apart protrusions on the collar, in the form of lobes or pins, such that upon striking one protrusion, the valves are rotated to their "on” position, and upon striking the other protrusion are rotated to their "off” position.
- the protrusions are preferably adjustable in position (e.g., by being screwed into selected tapped holes provided around a circumference of an end face of the collar adjacent the rotary cutting head) so that the water emitting segment may be readily increased or decreased to suit particular operating conditions.
- Each valve may comprise a stationary valve body with a through bore aligned with its conduit, the valve body housing -a rotatable valve member to which its operating lever is attached, which member also has a through bore which is alignable with the valve body bore to perm it water flow, and is non-alignable to prevent water flow.
- a 180° sector (the "cutting" sector) to be water emitting and the remaining 180 0 sector to be non-emitting.
- water from a pressure supply source (e.g. at 1000 - 10,000 p.s.i. or higher), is conveyed along a supply conduit drilled along the longitudinal axis of the drive shaft, the supply conduit terminating within the cutting head and being intersected by a plurality of radial supply conduits, one for each nozzle or group of nozzles.
- valves may be located in the radial supply conduits, so that as these conduits and hence their nozzle(s), upon rotation of the head, temporarily enter the "spraying" sector, the cam path change, or the protrusions being struck, displacing the operating levers and hence rotating the valve members to align the bores of the valve members to permit water delivery to the nozzle(s), while cessation of water delivery occurs as the conduits amd their valves exit the "spraying" sector.
- the machine 1 comprises a chassis 6 provided with a spoil gathering/loading conveyor 7 and carrying one end 8 of an elongate boom 9 having a longitudinal axis 10, the boom 9 being mounted on a turn-table arrangement 11 for swinging movements about a vertical axis, and on pivot pins 12 for swinging movements about a horizontal axis, such movements being controlled in the known manner by hydraulic rams 11A.
- a cutting head 14 rotatable about the boom axis 10 and provided with a plurality of replaceable cutter picks 15 as shown in Figure 3.
- the chassis 6 also carries a power unit in the form of an electric motor (not shown) to power not only the cutting head 14 via a transmission which includes a final drive shaft 16 (see Figure 3) but also a hydraulic pump(s) for various hydraulic functions of the machine 1, including drive to the tracks 3.
- a power unit in the form of an electric motor (not shown) to power not only the cutting head 14 via a transmission which includes a final drive shaft 16 (see Figure 3) but also a hydraulic pump(s) for various hydraulic functions of the machine 1, including drive to the tracks 3.
- the boom 9 comprises an outer casing 17 which carries spaced-apart bearings 18 for rotational support of the drive shaft 16, with the cutting head 14 drivably attached to, and supported from, the drive shaft 16 at a flanged joint 19.
- a nozzle 20 from emitting a water spray or jet.
- Water is conveyed to the nozzles 20 from a water pressurisation source e.g., a pump (not shown) along a plurality of conveying conduits comprising a supply conduit 21 drilled along the longitudinal axis of the drive shaft 16 and cutting head 14, which conduit 21 is in fluid flow communication with a plurality of radial conduits 22 drilled into the cutting head 14, which conduits 22 are in fluid flow communication with delivery conduits 23, which deliver water to the nozzles 20.
- a valve 24 comprising a stationary valve body 25 mounted in a rearward end 26 of the cutting head 14, the valve body 25 having a through bore 27 permanently aligned with its conduit 22.
- the valve body 25 also houses a rotatable valve member 28 having a through bore 29 which is alignable with the bore 27 to permit water flow, and non-alignable to prevent water flow.
- a rotatable valve member 28 having a through bore 29 which is alignable with the bore 27 to permit water flow, and non-alignable to prevent water flow.
- To each valve member 28 is attached a an operating lever 30 having a roller or pin 31 located in a cam track 32 machined into an inwardly extending, annular flange 33 of a collar 34, which flange 33 is located adjacent the cutting head 14.
- the collar 34 surrounds a portion of the outer casing 17 of the boom 9, and is rotatable about such casing on interposed journal bearings 35. Rotation is effected by an hydraulic or electric motor 36 attached to a flange 37 of the outer casing 17, and having a drive pinion 38 in drivable engagement with a toothed outer portion 39 of the collar 34.
- the cam track 32 has an inner diameter sector 40 over which each bore 29 is aligned with its associated bore 27 to permit water flow, as indicated both in Figure 6 and at the lower valve 24 of Figure 3, so that a water spray 41 is emitted from each lower nozzle 20 of Figure 3.
- the cam track 32 has an outer diameter sector 42 over which the bores 27 and 29 are not aligned to prevent water flow, as indicated both in Figure 7 and at the upper valve 24 of Figure 3.
- the transition from sector 40 to sector 42 occurs at areas 43 and 44 of the cam track 32, at which areas the mode of each valve 24 is altered, as the valves 24 are rotated through areas 43 and 44 by rotation of the cutting head 14.
- protrusions would likewise be located at areas 43 and 44, which areas result in the nozzles (20) spraying over approximately 180°, being the cutting sector.
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)
- Seasonings (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
- This invention relates to a mining machine of the kind adapted to drive underground roadways, tunnels or headings, commonly known as a roadheader machine.
- Basically, such a machine comprises a self-propelled, crawler or wheel-mounted chassis carrying a displaceable boom, a terminal end of which is provided with a rotary cutting head, the latter being driven from a power unit carried by the chassis, via a transmission including a final drive shaft extending longitudinally of the boom and rotatably supported in bearings carried by a stationary, outer casing of the boom. The boom is power-displaced e.g. hydraulically, by the machine operator so that the boom follows the profile required for the roadway etc. Apart from the cutting heads being provided with replaceable cutter picks, they are also provided with a plurality of nozzles to emit a water spray or jet, while the nozzles may, in practice be mounted on the heads and/or on the picks. The water spray or jet may be for purposes such as pre-start warning, dust suppression, pick face flushing, incendive sparking elimination and, at higher pressures, water jet assisted cutting. It will be appreciated however that only a certain sector of the periphery of the cutting head is in the cut at any one time and consequently, and if as is usually the case, water is emitted over 360° a substantial proportion of the water e.g. 50%, has no beneficial effect but represent a waste, not only of water, but of power consumed in generating the pressure (which, in the case of water jet assisted cutting, may be of the order of 30,000 p.s.i.), apart from creating unnecessarily wet floor conditions. Attempts have been made to provide valving arrangements to achieve phased emission, but such systems have yet to be proved and are relatively complex to instal, maintain and adjust.
- The object of the present invention is to provide a roadheader type mining machine in which the emission of water sprays or jets may be readily phased in a desired radially extending sector by simple control of valving arrangements.
- According to the present invention, there is provided a roadheader type mining machine comprising a self-propelled chassis, an elongate boom having a longitudinal axis, the boom being supported by the chassis for powered positional adjustment with respect to the chassis, a terminal end of the boom provided with a rotary cutting head having a plurality of nozzles each to emit a water spray or jet, water conveying conduits connectable between the nozzles and a source of pressurised water and an on/off water flow control valve associated with each conduit, and a collar surrounding at least a portion of the boom about an axis co-axial with the boom longitudinal axis and being rotatable about this axis by power means to a selected position, the collar carrying, and/or positionally controlling, valve actuation means whereby periodic water supply to the nozzles, due to head rotation, within a selected radial sector is controllable by the valves, phased activation of which is controlled by positional adjustment of the collar to provide appropriate positional adjustment of the valve actuation means.
- Thus, the invention provides a roadheader type mining machine in which water phasing only to a selected radial sector (normally the cutting sector) of the cutting head, is readily attained simply by appropriate re-positioning of the collar, by rotation, from a previous angular position (appropriate to a previously selected sector) to a new, static, position that results in phased water emission over only the selected sector, thereby maximising the efficient use of water.
- Conveniently, the head is attached to one end of a drive shaft extending longitudinally of the boom and rotatably supported in bearings carried by a stationary outer casing of the boom, the drive shaft forming part of a power transmission from a power unit of the chassis to the cutting head.
- The power means to rotate the collar to its desired angular position with respect to non-rotational portions of the boom may for example be an hydraulic motor or an e- ctric motor, and either type of motor may drive the collar through a gearbox, which may be of a speed reduction kind. For medium pressures e.g. 1,000-1,500 p.s.i., suitable for example for pick face flushing, journal bearings may be interposed between the collar and a portion of the outer casing of the boom, while for higher loadings/pressures e.g. 30,000 p.s.i., roller bearings may be provided.
- Collar re-positioning (by rotation of collar about the boom axis), to result in sector selection variations, to suit positional variations of the boom and hence the cutting head, may be controlled by any of several alternative procedures. Thus, in its simplest form, collar rotation may be controlled directly by activation of hand controls by the machine operator, provided the machine operator has sight of the cutting head and/or the boom. Alternatively, automatic collar rotational control may be effected by attaching transducers to the boom (to register directionally, load or stresses within the boom) and/or the cutting head and/or the cutting picks and/or the conventional hydraulic control circuitry of the boom (to register flow and/or pressure changes) to sense the sector of the head that is effecting cutting, the transducers being connected to electrical and/or hydraulic control circuitry to instigate collar rotation. In detail, the transducers may be of a pressure sensing kind and/or a movement sensing kind. As a further alternative, the boom may be provided with a trailing arm or a link mechanism in contact with the cut, to sense the location of the cut and hence the sector of the drum that is effecting cutting, with collar rotation, to achieve its desired re-positioning, being controlled through suitable control circuitry by movements of the arm or link mechanism. Finally, if the machine is of a kind provided with a micro-processor which retains a profile cutting pattern program, then this program may be modified to control additionally collar positioning, as the sector in the cut is pre-determined.
- The valve actuating means preferably comprises an operating lever attached to each valve, the levers, in a first embodiment, being positionally controlled by a cam track of the collar. The cam track may be machined into the collar, or releasably attached to the collar so as to be readily changeable when a change in the angles of the water emitting, or non-emitting, segments is reuired. In detail, the cam track may be provided in an inwardly extending, annular flange of the collar located adjacent the cutting head. In a second embodiment, the valve operating levers are engagable by two angularly spaced-apart protrusions on the collar, in the form of lobes or pins, such that upon striking one protrusion, the valves are rotated to their "on" position, and upon striking the other protrusion are rotated to their "off" position. The protrusions are preferably adjustable in position (e.g., by being screwed into selected tapped holes provided around a circumference of an end face of the collar adjacent the rotary cutting head) so that the water emitting segment may be readily increased or decreased to suit particular operating conditions.
- Each valve may comprise a stationary valve body with a through bore aligned with its conduit, the valve body housing -a rotatable valve member to which its operating lever is attached, which member also has a through bore which is alignable with the valve body bore to perm it water flow, and is non-alignable to prevent water flow.
- It may be arranged for a 180° sector (the "cutting" sector) to be water emitting and the remaining 1800 sector to be non-emitting.
- Conveniently, water from a pressure supply source (e.g. at 1000 - 10,000 p.s.i. or higher), is conveyed along a supply conduit drilled along the longitudinal axis of the drive shaft, the supply conduit terminating within the cutting head and being intersected by a plurality of radial supply conduits, one for each nozzle or group of nozzles. Thus, the valves may be located in the radial supply conduits, so that as these conduits and hence their nozzle(s), upon rotation of the head, temporarily enter the "spraying" sector, the cam path change, or the protrusions being struck, displacing the operating levers and hence rotating the valve members to align the bores of the valve members to permit water delivery to the nozzle(s), while cessation of water delivery occurs as the conduits amd their valves exit the "spraying" sector.
- 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 of a roadheader type machine in accordance with the invention;
- Figure 2 is a plan view of Figure;
- Figure 3 is an enlarged, part axial sectional view of a cam track embodiment;
- Figures 4 and 5 are diagrammatic end views on the cam track of Figure 3, showing the on and off positions, respectively;
- Figures 6 and 7 are, respectively, enlarged sectional portions of Figures 4 and 5, showing the "on" and "off" valve positions;
- Figure 8 is an enlarged, sectional view through an on/off valve of Figures 3 to 5; and
- Figure 9 is a plan view of Figure 6. In the drawings, a roadheader
type mining machine 1 is shown seated on amine floor 2 over which the machine is manoueverable on crawler tracks 3 under the control of a machine operator, an operator's seat being indicated at 4 and a bank of control valves at 5. - The
machine 1 comprises a chassis 6 provided with a spoil gathering/loading conveyor 7 and carrying oneend 8 of anelongate boom 9 having alongitudinal axis 10, theboom 9 being mounted on a turn-table arrangement 11 for swinging movements about a vertical axis, and on pivot pins 12 for swinging movements about a horizontal axis, such movements being controlled in the known manner by hydraulic rams 11A. At theother end 13 of theboom 9 is provided acutting head 14 rotatable about theboom axis 10 and provided with a plurality ofreplaceable cutter picks 15 as shown in Figure 3. The chassis 6 also carries a power unit in the form of an electric motor (not shown) to power not only thecutting head 14 via a transmission which includes a final drive shaft 16 (see Figure 3) but also a hydraulic pump(s) for various hydraulic functions of themachine 1, including drive to the tracks 3. - As best seen in Figure 3, the
boom 9 comprises anouter casing 17 which carries spaced-apart bearings 18 for rotational support of thedrive shaft 16, with thecutting head 14 drivably attached to, and supported from, thedrive shaft 16 at aflanged joint 19. Associated with eachpick 15 is anozzle 20 from emitting a water spray or jet. Water is conveyed to thenozzles 20 from a water pressurisation source e.g., a pump (not shown) along a plurality of conveying conduits comprising asupply conduit 21 drilled along the longitudinal axis of thedrive shaft 16 and cuttinghead 14, whichconduit 21 is in fluid flow communication with a plurality ofradial conduits 22 drilled into thecutting head 14, whichconduits 22 are in fluid flow communication withdelivery conduits 23, which deliver water to thenozzles 20. Associated with eachconduit 22 is avalve 24 comprising astationary valve body 25 mounted in arearward end 26 of thecutting head 14, thevalve body 25 having a throughbore 27 permanently aligned with itsconduit 22. Thevalve body 25 also houses arotatable valve member 28 having a throughbore 29 which is alignable with thebore 27 to permit water flow, and non-alignable to prevent water flow. To eachvalve member 28 is attached a anoperating lever 30 having a roller orpin 31 located in acam track 32 machined into an inwardly extending,annular flange 33 of acollar 34, whichflange 33 is located adjacent thecutting head 14. Thecollar 34 surrounds a portion of theouter casing 17 of theboom 9, and is rotatable about such casing on interposedjournal bearings 35. Rotation is effected by an hydraulic orelectric motor 36 attached to aflange 37 of theouter casing 17, and having adrive pinion 38 in drivable engagement with a toothedouter portion 39 of thecollar 34. - As best seen in Figures 4 and 5, the
cam track 32 has aninner diameter sector 40 over which eachbore 29 is aligned with its associatedbore 27 to permit water flow, as indicated both in Figure 6 and at thelower valve 24 of Figure 3, so that awater spray 41 is emitted from eachlower nozzle 20 of Figure 3. Similarly, thecam track 32 has anouter diameter sector 42 over which thebores upper valve 24 of Figure 3. The transition fromsector 40 tosector 42 occurs atareas cam track 32, at which areas the mode of eachvalve 24 is altered, as thevalves 24 are rotated throughareas cutting head 14. In the alternative embodiment with protrusions to cause valve activation, such protrusions would likewise be located atareas
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85306000T ATE37928T1 (en) | 1984-08-25 | 1985-08-23 | SCRAPPING MACHINE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8421670 | 1984-08-25 | ||
GB848421670A GB8421670D0 (en) | 1984-08-25 | 1984-08-25 | Mining machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0176235A1 true EP0176235A1 (en) | 1986-04-02 |
EP0176235B1 EP0176235B1 (en) | 1988-10-12 |
Family
ID=10565884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85306000A Expired EP0176235B1 (en) | 1984-08-25 | 1985-08-23 | Mining machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0176235B1 (en) |
AT (1) | ATE37928T1 (en) |
DE (1) | DE3565574D1 (en) |
GB (1) | GB8421670D0 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0225079A1 (en) * | 1985-11-23 | 1987-06-10 | Dosco Overseas Engineering Limited | Mining machine |
GB2190942A (en) * | 1986-05-28 | 1987-12-02 | Presswell Engineering Ltd | Operating head with phased fluid delivery |
GB2206913A (en) * | 1987-07-08 | 1989-01-18 | Anderson Strathclyde Plc | Mining machine |
EP3656976A1 (en) * | 2012-09-14 | 2020-05-27 | Joy Global Underground Mining LLC | Cutter head for mining machine |
CN112943235A (en) * | 2021-04-12 | 2021-06-11 | 三一重型装备有限公司 | Spraying water channel structure and coal mining machine roller |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102162361B (en) * | 2010-11-26 | 2013-09-25 | 兰海宽 | Mechanically-driven hard-rock double-head tunneling machine |
AU2014286924A1 (en) * | 2013-07-03 | 2016-02-25 | Technological Resources Pty Ltd | Dynamic scheduling of water filler |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2256232A1 (en) * | 1972-11-16 | 1974-05-22 | Gewerk Eisenhuette Westfalia | CONTROL DEVICE FOR SUBSIDIARY EXTRACTIONS |
US4049318A (en) * | 1974-11-01 | 1977-09-20 | Dresser Europe S.A. | Mining machine with cam-operated water jet pump |
DE2808915A1 (en) * | 1978-03-02 | 1979-09-06 | Eickhoff Geb | ROLLER CUTTER FOR UNDERGROUND MINING |
GB2072238A (en) * | 1980-03-14 | 1981-09-30 | Eickhoff Geb | Shearer drums of winning machines |
DE3122323A1 (en) * | 1981-06-05 | 1982-12-23 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Control of the pressure water of cutting drums with internal spray arrangement |
DE3144741A1 (en) * | 1981-11-11 | 1983-05-19 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Control of the pressure water of internally sprayed cutting drums |
-
1984
- 1984-08-25 GB GB848421670A patent/GB8421670D0/en active Pending
-
1985
- 1985-08-23 DE DE8585306000T patent/DE3565574D1/en not_active Expired
- 1985-08-23 EP EP85306000A patent/EP0176235B1/en not_active Expired
- 1985-08-23 AT AT85306000T patent/ATE37928T1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2256232A1 (en) * | 1972-11-16 | 1974-05-22 | Gewerk Eisenhuette Westfalia | CONTROL DEVICE FOR SUBSIDIARY EXTRACTIONS |
US4049318A (en) * | 1974-11-01 | 1977-09-20 | Dresser Europe S.A. | Mining machine with cam-operated water jet pump |
DE2808915A1 (en) * | 1978-03-02 | 1979-09-06 | Eickhoff Geb | ROLLER CUTTER FOR UNDERGROUND MINING |
GB2072238A (en) * | 1980-03-14 | 1981-09-30 | Eickhoff Geb | Shearer drums of winning machines |
DE3122323A1 (en) * | 1981-06-05 | 1982-12-23 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Control of the pressure water of cutting drums with internal spray arrangement |
DE3144741A1 (en) * | 1981-11-11 | 1983-05-19 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Control of the pressure water of internally sprayed cutting drums |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0225079A1 (en) * | 1985-11-23 | 1987-06-10 | Dosco Overseas Engineering Limited | Mining machine |
US4755002A (en) * | 1985-11-23 | 1988-07-05 | Dosco Overseas Engineering Ltd. | Mining machine |
GB2190942A (en) * | 1986-05-28 | 1987-12-02 | Presswell Engineering Ltd | Operating head with phased fluid delivery |
GB2190942B (en) * | 1986-05-28 | 1989-12-13 | Presswell Engineering Ltd | Operating head assembly with phased fluid delivery |
GB2206913A (en) * | 1987-07-08 | 1989-01-18 | Anderson Strathclyde Plc | Mining machine |
GB2206913B (en) * | 1987-07-08 | 1991-09-18 | Anderson Strathclyde Plc | Mining machine |
EP3656976A1 (en) * | 2012-09-14 | 2020-05-27 | Joy Global Underground Mining LLC | Cutter head for mining machine |
CN112943235A (en) * | 2021-04-12 | 2021-06-11 | 三一重型装备有限公司 | Spraying water channel structure and coal mining machine roller |
Also Published As
Publication number | Publication date |
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GB8421670D0 (en) | 1984-09-26 |
EP0176235B1 (en) | 1988-10-12 |
ATE37928T1 (en) | 1988-10-15 |
DE3565574D1 (en) | 1988-11-17 |
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