GB2045837A - Rotary mineral cutting apparatus - Google Patents
Rotary mineral cutting apparatus Download PDFInfo
- Publication number
- GB2045837A GB2045837A GB8008208A GB8008208A GB2045837A GB 2045837 A GB2045837 A GB 2045837A GB 8008208 A GB8008208 A GB 8008208A GB 8008208 A GB8008208 A GB 8008208A GB 2045837 A GB2045837 A GB 2045837A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduit
- boss
- cylindrical member
- main part
- inner cylindrical
- 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 title claims description 7
- 239000011707 mineral Substances 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003245 coal Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000001629 suppression 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
- 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
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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The apparatus comprises a shearer drum (18) having picks (22) and water jets (25) adjacent the picks. The drum is mounted on a hollow driven shaft (12) by means of a boss (16) fixed to the interior of the drum. The boss includes a central removable part (17) having a socket (35) for receiving water and passages lead to the jets from the socket through the boss and the drum. A supply conduit (40) is a push-fit in the socket and extends through the shaft (12) so that it can be removed from the goaf end. The conduit is rotatable with the boss and static seals are provided to prevent water leakage between the conduit and the boss in between the fixed and removable parts of the boss. At the goaf end, the conduit engages in a rotary seal (51) which can readily be replaced. <IMAGE>
Description
SPECIFICATION
Rotary mineral cutting apparatus
This invention is concerned with rotary mineral cutting apparatus of the type including a hollow cylindrical body provided around its periphery with picks.
Such apparatus comprises a cutting device, usually known as a shearer drum, removably mounted on a rotatably driven hub. Apparatus of this type is extensively used in coal mines for long wall mining, in which a winning machine traverses to and fro along a coal face removing a given depth of coal for each traverse. The machine mounts the rotatably driven hub and the drive mechanism therefor.
Such apparatus usually has helical vanes around the hollow cylindrical body and the picks are mounted on the vanes, the vanes serving to guide cut coal towards a face conveyor.
Water is fed from the winning machine to the interior of the hollow cylindrical body and is jetted from jets provided adjacent the picks, so as to reduce the incidence of dust during cutting and, also, to dissolve gases released during cutting. The water is fed through a conduit which extends through the machine hub and connects with a gallery for supplying passages leading to the jets with water. A boss closes the end of the conduit and provides the gallery. The boss rotates relative to the conduit and a complicated arrangement of seals is provided between the conduit and the boss. Relative reciprocal movement of parts tends to occur with rapid deterioration of the seals, so that frequent replacement of the seals is necessary. Access to the seals is difficult, since access is by disassembly of the boss, which is within the body of the cutter and is only accessible from the face side.As a result, it is necessary to use a stable hole (a recess blasted in the coal face) for access. Due to such difficulties, replacement of seals may be left until dust and gas suppression is non-existent. Further problems are then caused due to clogging of jets.
The present invention provides rotary mineral cutting apparatus comprising a rotary cutter having a hollow cylindrical body provided around its outer periphery with pick holders and with jets, a boss within the hollow body including a main part fixed to the body, a rotatably driven hub on which said main part of the boss is mounted for rotation therewith, the boss including an inner cylindrical member releasably mounted on said main part with a static seal therebetween, a water supply conduit extending through the hub and engaged with the inner cylindrical member for rotation therewith with a static seal therebetween, the boss having passages linking the conduit with the jets, and a non-rotatable water inlet releasably joined to the opposite end of the conduit through a rotary seal.Preferably, the conduit is a push-fit into sealing engagement with the boss and is removable through the hub.
With this arrangement, the conduit can be detached from the water inlet to permit replacement of the rotary seal, the seal being readily accessible from the goaf side. When it is required to replace the seals between the boss and the conduit, the conduit can be withdrawn through the hub from the goaf side and it is preferred that the seals are mounted on the conduit rather than the boss to permit easy replacement. Access to the region in which the conduit is sealed to the boss is achieved by removing the inner cylindrical member. The seal or seals between the inner and outer parts of the boss can be simple ring seals.
Reference is now made to the accompanying drawings, wherein:
Figure 1 is a perspective view of apparatus according to the invention, and
Figure 2 is an enlarged perspective view of a part of the apparatus.
The apparatus shown comprises a mineral winning machine frame 11, a part of which is illustrated.
The machine includes drive means (not shown) for rotatably driving a shaft 12, to which is attached a tapered hub 13.
A "shearer drum" or cutter 15 comprises a boss 16, which is fitted on the hub 13. The boss includes a removable central portion 17, and a main portion 1 6a which integrally made with a hollow cylindrical body 18 surrounding the boss. The main portion 16a is shaped complementary to the hub 13. The body is integral with an end plate 19 and a helical vane 20 which extends round its periphery. Pick boxes 21 are mounted in the peripheral surfaces of the vane 20 and the end plate 19 and picks 22 are fitted in the pick boxes. Jets 25 are also provided in these peripheral surfaces and passages such as 26 in the vane and the end plate lead to the jets from channels 27, which extend longitudinally of the body and are integrally mounted on the internal wall of the hollow body.The main portion 16a of the boss defines, with the body 18, a gallery 29, which connects with the channels 27 to supply water to the jets.
The central portion 17 of the boss includes a second gallery 30 connected with the first gallery by passages such as 31 in the main portion 16a. O-ring seals 33,34 are provided at opposite sides of the passages 31 to seal the passages to the second gallery 30. The second gallery leads from a socket 35 located centrally of the boss. The boss includes, adjacent to and parallel to the socket 35, a hole 36.
A conduit 40 is provided which extends through the hub 13 and shaft 12. The conduit has outer, radial locating projections 41, which permit sliding of the conduit centrally through the shaft from the goaf side, i.e. the right hand side of Figure 1. The conduit has a flange 42, which abuts against the central portion 17 of the boss, and a spigot 44 projects from the flange to engage in the hole 36. The conduit extends beyond the flange 42, the end portion 46 sealingly engaging the socket 35 by means of an
O-ring seal 47 mounted on the end portion 46.
The opposite end of the conduit 40 is rotatably received in a rotary sealing device 50 having a rotary seal 51. The sealing device 50 is carried by a water inlet member 52 fixed to the machine frame 11. The sealing device 50 is bolted to the inlet member 52 and can be readily removed therefrom for replacement.
In use, the conduit 40 rotates with the boss 16 through the engagement of the spigot 44 in the hole 36. The boss in turn rotates with the hub 13, to which it is bolted. Water is fed through the conduit 40 under pressure to reach the jets through the various galleries, channels and passages.
The conduit is a push-fit in the socket 35 and the conduit can readily be extracted from the goaf side for replacement of the O-ring 47, if this becomes necessary.
Claims (8)
1. Rotary mineral cutting apparatus comprising: a rotary cutter having a hollow cylindrical body provided around its outer periphery with pick holders and with jets, a boss within the hollow body including a main part fixed to the body, a rotatably driven hub on which said main part of the boss is mounted for rotation therewith, the boss including an inner cylindrical member releasably mounted on said main part with a static seal therebetween, a water supply conduit extending through the hub and engaged with the inner cylindrical member for rotation therewith with a static seal therebetween, the boss having passages linking the conduit with the jets, and a non-rotatable water inlet releasably joined to the opposite end of the conduit through a rotary seal.
2. Apparatus according to claim 1, wherein the conduit is a push-fit into sealing engagement with the boss and is removable through the hub.
3. Apparatus according to claim 2, wherein the inner cylindrical member has a socket which receives the conduit, the static seal between the boss and the conduit being a ring seal mounted on the conduit.
4. Apparatus according to claim 2 or 3, wherein the conduit and the inner cylindrical member have interengageable parts for rotation of the conduit with said member.
5. Apparatus according to claim 2,3 or 4, wherein the conduit is provided with outer radial projections engageable with the interior of the hub to facilitate location of the conduit relative to the boss.
6. Apparatus according to any preceding claim, wherein the inner cylindrical member has a radial passage communicating the conduit with a passage in the main part of the boss, axially spaced static ring seals being provided about the cylindrical member between the latter and said main part at opposite sides of said radial passage.
7. Apparatus according to any preceding claim wherein the inner cylindrical member is provided with a flange which is bolted to the main part of the boss.
8. Rotary mineral cutting apparatus constructed substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8008208A GB2045837B (en) | 1979-03-16 | 1980-03-11 | Rotary mineral cutting apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7911262 | 1979-03-16 | ||
| GB8008208A GB2045837B (en) | 1979-03-16 | 1980-03-11 | Rotary mineral cutting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2045837A true GB2045837A (en) | 1980-11-05 |
| GB2045837B GB2045837B (en) | 1982-11-17 |
Family
ID=26271075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8008208A Expired GB2045837B (en) | 1979-03-16 | 1980-03-11 | Rotary mineral cutting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2045837B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4647112A (en) * | 1984-04-14 | 1987-03-03 | Charbonnages De France | Rotary cutter for gouging out ore from mine faces |
| AT392515B (en) * | 1986-12-18 | 1991-04-25 | Gewerk Eisenhuette Westfalia | SCREWING HEAD FOR DEGRADING AND DRIVING MACHINES, ESPECIALLY FOR PARTIAL CUTTING MACHINES WITH CROSS-CUTTING HEAD |
| WO2002026063A1 (en) * | 2000-09-28 | 2002-04-04 | Hipema Inversiones, S.L. | Vegetable cutting machine and cutting method obtained with said machine |
| US8939516B2 (en) | 2012-12-18 | 2015-01-27 | Caterpillar Global Mining Highwall Miners Llc | Rotary cutter drum for continuous mining machine |
| WO2018192653A1 (en) * | 2017-04-20 | 2018-10-25 | Sandvik Intellectual Property Ab | Rotary cutting head with fluid supply ducting |
| CN110320113A (en) * | 2019-07-19 | 2019-10-11 | 三峡大学 | A kind of interface Tu Yan undisturbed sample torsion shear apparatus and method |
| CN114856559A (en) * | 2022-05-13 | 2022-08-05 | 中煤科工集团西安研究院有限公司 | Coal mine underground rapid plug-in high-pressure dynamic sealing rotary water feeder and use method |
| CN114876456A (en) * | 2022-05-13 | 2022-08-09 | 中煤科工集团西安研究院有限公司 | Underground coal mine sealed plug-in wired signal transmission rotary water feeder and use method |
-
1980
- 1980-03-11 GB GB8008208A patent/GB2045837B/en not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4647112A (en) * | 1984-04-14 | 1987-03-03 | Charbonnages De France | Rotary cutter for gouging out ore from mine faces |
| AT392515B (en) * | 1986-12-18 | 1991-04-25 | Gewerk Eisenhuette Westfalia | SCREWING HEAD FOR DEGRADING AND DRIVING MACHINES, ESPECIALLY FOR PARTIAL CUTTING MACHINES WITH CROSS-CUTTING HEAD |
| WO2002026063A1 (en) * | 2000-09-28 | 2002-04-04 | Hipema Inversiones, S.L. | Vegetable cutting machine and cutting method obtained with said machine |
| ES2166733A1 (en) * | 2000-09-28 | 2002-04-16 | Hipema Inversiones Sl | Vegetable cutting machine and cutting method obtained with said machine |
| US8939516B2 (en) | 2012-12-18 | 2015-01-27 | Caterpillar Global Mining Highwall Miners Llc | Rotary cutter drum for continuous mining machine |
| WO2018192653A1 (en) * | 2017-04-20 | 2018-10-25 | Sandvik Intellectual Property Ab | Rotary cutting head with fluid supply ducting |
| CN110320113A (en) * | 2019-07-19 | 2019-10-11 | 三峡大学 | A kind of interface Tu Yan undisturbed sample torsion shear apparatus and method |
| CN110320113B (en) * | 2019-07-19 | 2021-08-31 | 三峡大学 | Soil-rock interface undisturbed sample torsional shear test device and method |
| CN114856559A (en) * | 2022-05-13 | 2022-08-05 | 中煤科工集团西安研究院有限公司 | Coal mine underground rapid plug-in high-pressure dynamic sealing rotary water feeder and use method |
| CN114876456A (en) * | 2022-05-13 | 2022-08-09 | 中煤科工集团西安研究院有限公司 | Underground coal mine sealed plug-in wired signal transmission rotary water feeder and use method |
| CN114876456B (en) * | 2022-05-13 | 2023-05-12 | 中煤科工集团西安研究院有限公司 | Underground coal mine sealing plug-in wired signal transmission rotary water feeder and use method thereof |
| CN114856559B (en) * | 2022-05-13 | 2023-05-16 | 中煤科工集团西安研究院有限公司 | Underground coal mine rapid-plugging high-pressure dynamic sealing rotary water feeder and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2045837B (en) | 1982-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2433265C2 (en) | Method and device for processing of materials with milling | |
| GB2045837A (en) | Rotary mineral cutting apparatus | |
| US2089597A (en) | Tube cleaning machine | |
| GB1460672A (en) | Shield tunnelling machine with orbiting cutterhead | |
| JP2011157683A (en) | Bit replacing device for excavator | |
| CA1124754A (en) | Hollow cutting head | |
| US5507565A (en) | Method and apparatus for suppressing dust and frictional ignition on a continuous mining machine | |
| US4556256A (en) | Cutting appliances for use in tunnel driving operations | |
| US3805631A (en) | Drive assemblies for mining apparatus | |
| US4294317A (en) | Drillhead unit | |
| GB2216158A (en) | High pressure water assisted mining and tunnelling machine | |
| US4565410A (en) | Apparatus for controlling the supply of high-pressure liquid to a cutter drum assembly | |
| WO1995014846A1 (en) | Water supply system for a mining machine | |
| CN109681202A (en) | The spray dust-reducing system of development machine | |
| US3876253A (en) | Mining machine with spray nozzles for supply of dust suppression liquid | |
| GB2067625A (en) | Cutter tool equipment for mining machines | |
| US2268260A (en) | Cutter-chain machine for use in mining coal and other minerals | |
| CN109779629A (en) | Atomizing de-dusting cutterhead | |
| US4718730A (en) | Cross-axis cutting assembly of a selective cutting machine | |
| GB2243857A (en) | A cutting appliance for mounting on an arm of a cutting machine | |
| US3237990A (en) | Head structure for rock drilling machine | |
| SU1148980A1 (en) | Swivel for rotary torque meter | |
| SU715785A1 (en) | Device for sealing blasthole mouth at drilling | |
| SU1797653A3 (en) | Cutting bit of cutting member of mining machine | |
| US4887991A (en) | Drive assemblies for chain-driven mining machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940311 |