AU2005227376A1 - Hydraulic support for fully mechanized mining and caving face end - Google Patents
Hydraulic support for fully mechanized mining and caving face end Download PDFInfo
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- AU2005227376A1 AU2005227376A1 AU2005227376A AU2005227376A AU2005227376A1 AU 2005227376 A1 AU2005227376 A1 AU 2005227376A1 AU 2005227376 A AU2005227376 A AU 2005227376A AU 2005227376 A AU2005227376 A AU 2005227376A AU 2005227376 A1 AU2005227376 A1 AU 2005227376A1
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AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION NAME OF APPLICANT(S):: Yanzhou Coal Mining Company Limited ADDRESS FOR SERVICE: DAVIES COLLISON CAVE Patent Attorneys 1 Nicholson Street, Melbourne, 3000, Australia INVENTION TITLE: Hydraulic support for fully mechanized mining and caving face end The following statement is a full description of this invention, including the best method of performing it known to me/us:- 5102
C.)
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IField of the Invention The present invention relates to support equipment for coal mine's underground fully mechanized mining and caving (FMMC) face, particularly to a hydraulic support suitable for FMMC face end, used S together with equipment such as large power and large transport capacity 0 flight conveyors and self-advancing stage loaders etc.
Background Art FMMC face end is the joint of workface and gateway. It is not only the focus of roof maintenance, but also the difficulty of roof management, due to multiple supporting pressures and maximum mining-induced effect applied on the wall rock, and complex strata behavior, as well as large leg-free space. Especially for the lower face end, it is not only the interface of mining and transporting equipment, but also the "throat" for people and coal transportation, since there are provided a variety of equipment, including front and rear flight conveyors and self-advancing stage loaders. Therefore, the face end support is the key to workface safety.
Currently, FMMC face end adopts the combined supporting of "I"-form metal articulated canopy and single hydraulic prop, which may result into more accidents and heavier labor burden. The face end support combinations once had the following types, i.e. three supports in one set, two supports in one set, and one set of main supports plus one set of auxiliary supports. However, all of them do not work well, due to heavy weight, complicated structure and difficult support advancing. Particularly, there are no precedents of face end support matched with large power shearer, flight conveyor and self-advancing stage loader.
Ia -I Summary of the Invention o In order to overcome the deficiency of heavy labor burden and high I accident possibility of existing FMMC face end supporting, the invention provides a hydraulic support, which can realize the mechanization of supporting operation at high output and high transport capacity FMMC face end, reduce miners' labor burden, reduce accidents and increase workface advancing speed; the support further features simple structure, o light weight and smooth support advancing.
According to one aspect of the invention, a hydraulic support for FMMC face end (hereinafter referred to as "end support") is of the type having two supports in one set, mainly comprising a left support, a right support, tilt-prevention jacks between the left and right supports, as well as a hydraulic circuit.
The left support includes three canopies, i.e. a left front canopy, a left middle canopy and a left rear canopy, and three bases, i.e. a left front base, a left middle base and a left rear base, and three kinds of legs articulated correspondingly between the canopies and the bases, i.e. front leg, middle leg and rear leg. The three canopies are articulated in series. The front end of the left front canopy is articulated with a left front beam for advance roof-protection, and a front beam jack is articulated between the left front canopy and the left front beam. The rear end of the left rear canopy is articulated with a left shield beam. The three bases are articulated together in series through connection bases, with a left front connection base between the left front base and the left middle base, and a left rear connection base between the left middle base and the left rear base. The front end of the left front base is articulated with an advancing jack, of 2 which the front end is connected with a stage loader or a support of the same kind via a front connector; base side-pushing jacks for outward O pushing are provided on the bases of the left support.
The right support is substantially the same as the left support, except that there are no base side-pushing jacks on the bases.
V The tilt-prevention jacks between the supports are articulated O between corresponding canopies or shield beams or connecting rods of the left and right supports.
The space between the front and middle legs and the space between the middle and rear legs respectively correspond to the drive head width or drive end width of a front and a rear flight conveyors plus an advancing step.
The hydraulic circuit mainly includes an operation valve set, hydraulic control locks, safety valves and auxiliary hydraulic components.
Preferably, when the end support is used at lower face end, the advancing jacks at the front ends of the left and right font bases are connected respectively with connection bases on the left and right sides of the stage loader via left and right front connectors articulated at the front ends of the jacks. The space between the front and middle legs and the space between the middle and rear legs respectively correspond to the drive head width of the front and rear flight conveyors plus an advancing step. The left shield beam and left rear base are respectively articulated with the top and bottom ends of a left front connecting rod and a left rear connecting rod, thus forming a four-link mechanism. In the same way, the 3 right shield beam and right rear base of the right support are connected with a right front connecting rod and a right rear connecting rod.
O
I The end support of the invention is suitable for FMMC face end, enjoying large leg-free space, while ensuring normal operation and maintenance of equipment. Particularly for lower end supporting at high S output FMMC face, the end support is adapted to large power and large S transport capacity front and rear flight conveyors as well as self-advancing S stage loaders etc.
Besides, the invention realizes the mechanization of face end supporting operation as well as high output and high efficiency of FMMC face, reduces miners' labor burden, reduces accidents, and increases advancing speed of workface. In addition, the end support of the invention is of simple structure, light weight, safety and reliability, as well as easy for advancing.
Description of Figures: The invention is disclosed more in detail with reference to the drawings, in which: Fig.1 is a schematic front view, illustrating the structure of a hydraulic support for FMMC face end according to the invention; Fig.2 is a schematic top view, illustrating the structure of a base part of Fig. 1; Fig.3 is a sectional view along line A-A of Fig. 1; and 4 Vt) Fig.4 is a sectional view along line B-B of Fig. 1.
U Detailed Description of the Invention The support for lower FMMC face end according to the invention is shown in Figs.1 and 2, which is of the simple type having two supports in one set, comprising a left support, a right support, tilt-prevention jacks between the left and right supports, as well as a hydraulic circuit.
The left support includes three canopies, i.e. a left front canopy 3, a left middle canopy 5 and a left rear canopy 7, and three bases, i.e. a left front base 23, a left middle base 19 and a left rear base 15, and three kinds of legs, i.e. front leg 30, middle leg 32 and rear leg 33.
The three canopies are articulated in series. The front end of the left front canopy 3 is articulated with a left front beam 1 for advance roof-protection, and a front beam jack 29 is articulated between the left front canopy 3 and the left front beam 1. The rear end of the left rear canopy 7 is articulated with a left shield beam 9, which is articulated with the top ends of a left front connecting rod 11 and a left rear connecting rod 13, of which the bottom ends are articulated with the left rear base 15, thus forming a four-link mechanism.
The three bases are articulated together in series through connection bases, with a left front connection base 21 intermediate the left front base 23 and the left middle base 19, and a left rear connection base 17 intermediate the left middle base 19 and the left rear base 15. The front end of the left front base 23 is articulated with an advancing jack 26, of which the front end is connected in turn with a connection base welded on the left side of a stage loader through a front connector 27. Base side-pushing jacks 25 for outward pushing are provided on the left front base 23 and left middle base 19.
O
IThe left support has one front leg 30, two middle legs 32 and one rear leg 33.
The right support is substantially the same as the left support, including three canopies, i.e. a right front canopy 4, a right middle canopy S 6 and a right rear canopy 8, and three bases, i.e. a right front base 24, a right middle base 20 and a right rear base 16, and three kinds of legs, i.e.
front leg 30, middle leg 32 and rear leg 33.
The three canopies are articulated in series. The front end of the right front canopy 4 is articulated with a right front beam 2, and a front beam jack 29 is articulated between the right front canopy 4 and the right front beam 2. The rear end of the right rear canopy 8 is articulated with a right shield beam 10, which is articulated with the top ends of a right front connecting rod 12 and a right rear connecting rod 14, of which the bottom ends are articulated with the right rear base 16, thus forming a four-link mechanism.
The three bases are articulated together in series through connection bases, with a right front connection base 22 intermediate the right front base 24 and the right middle base 20, and a right rear connection base 18 intermediate the right middle base 20 and the right rear base 16. The front end of the right front base 24 is articulated with an advancing jack 26, the front end of which is connected in turn with a connection base on the right side of the stage loader through a front connector 28.
6 The right support has one front leg 30, two middle legs 32 and one rear leg 33.
C.)
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IND The main difference between the left and right supports is that there are no base side-pushing jacks 25 on the bases.
The tilt-prevention jacks between the supports include two front tilt-prevention jacks 34 between the left front and right front canopies 3, 4, 0 and three rear tilt-prevention jacks 35 respectively between the left and right middle canopies 5, 6, left and right rear canopies 7, 8, and left and right front connecting rods 11, 12. They are connected with canopies or the like through connectors 36, 37.
The space between the front leg 30 and middle leg 32 and the space between the middle leg 32 and rear leg 33 respectively correspond to the drive head width of a front and a rear flight conveyors plus an advancing step of the support. That is to say, large-span spaces are formed at the places where three canopies and three legs meet with the drive head of the front or rear flight conveyor.
The hydraulic circuit mainly includes an operation valve set 31, hydraulic control one-way locks, safety valves, cut-off valves as well as auxiliary hydraulic components such as hydraulic pipes and quick connectors etc.
The above left and right supports are opposite relative to each other.
In case the advancing direction of the workface changes, the left and right supports will be interchanged.
Vt) o Preferably, when the end support is used for upper face end, the front 0 S ends of the left and right front bases 23, 24 may be connected with C preceding supports of the same kind through advancing jacks 26, so as to realize advancing of the end support. In this case, the space between the front and middle legs and the space between the middle and rear legs respectively correspond to the drive end width of a front and a rear flight conveyors plus an advancing step. Support of the same kind refers to a t cooperating support similar to the end support, consisting of a left support,
O
S a right support and tilt-prevention jacks between the supports, with rear bases connected with advancing jacks 26, but without shield beams or connecting rods, and the leg span is not limited by above factors, both three-leg and two-leg are acceptable.
The left and right shield beams of the end support may be coupled with the left and right rear bases by other means, for example, a single connecting rod, or a single connecting rod plus a balance jack articulated with the rear canopy.
The number of each of the front leg, middle leg and rear leg is one or two.
The tilt-prevention jacks between the supports can also be articulated between the rear connecting rods or shield beams of the left and right supports.
In case the roof is seriously broken, side-protection beams and jacks thereof may be added to the canopies of the left and right supports.
Working principle Vt) O The FMMC face end hydraulic support is provided at the joint of a o S FMMC workface and a face haulage roadway and on the two sides of the O rear part of a self-advancing stage loader, contiguous to the first caving support of FMMC face. The drive heads of the front and rear flight conveyors are respectively located under the front canopy 3 and rear canopy 7 of the left support. After cutting coal, pushing the front conveyor, advancing the coal caving support, and then pulling the rear conveyor in S place. After completing this working procedure, advancing the stage o S loader by one step through a self-advancing mechanism thereof and two front advancing jacks 26, then manipulating the operation valve set 31 of the left end support, lowering the frond, middle and rear legs 30, 32, 33 of the left support, allowing the left support away from the roof and advancing it by one step through the advancing jacks 26 articulated with the stage loader. In order to prevent the left support from tilting and collapsing during moving, making use of the tilt-prevention jack 34, between corresponding front, middle and rear canopies as well as front connecting rods to timely adjust the canopies and shield beams. After advancing the left support by one step, lifting the front, middle and rear legs 1, 3, 5 of the left support simultaneously so that the left support props up the roof timely. After completing the operation of the left support, manipulating the operation valve set 31 of the right support, lowering the front, middle and rear legs 30, 32, 33 of the right support, allowing the right support away from the roof, advancing the right support by one step through the front advancing jacks 26 articulated with the stage loader.
During the moving of the right support, timely adjusting the canopies and shield beams, so as to prevent the canopies from tilting. In case of moving deviation of the bases, adjusting the three base side-pushing jacks 25 to keep the bases in straight movement. After the right support being in place, lifting the front, middle and rear legs 30, 32, 33 of the right support 0 simultaneously so that the right support props up the roof timely, and thus completing a working cycle.
O
O
IN While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
0 List of the Reference Signs 1,2-left and right front beams, 3,4-left and right front canopies, 5,6-left and right middle canopies, 7,8-left and right rear canopies, 9, and right shield beams, 11, 12-left and right front connecting rods, 13, 14-left and right rear connecting rods, 15, 16-left and right rear bases, 17,18-left and right rear connection bases, 19,20-left and right middle bases, 21,22-left and right front connection bases, 23,24-left and right front bases, 25-base side-pushing jack, 26-advancing jack, 27,28-left and right front connectors, 29-front beam jack, 30-front leg, 31-operation valve set, 32-middle leg, 33-rear leg, 34-front tilt-prevention jack, tilt-prevention jack, 36-connector, 37-connector o The reference numerals in the following claims do not in any way limit the scope of the respective claims.: 0 0 The reference to any prior art in this specification is not, IND and should not be taken as, an acknowledgement or any form C-i of suggestion that that prior art forms part of the common general knowledge in Australia.
I\D Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", c and variations such as "comprises" and "comprising", will c, 1 be understood to imply the inclusion of a stated integer or c-i step or group of integers or steps but not the exclusion of V) any other integer or step or group cf integers or steps.
Claims (5)
- 2. The FMMC face end hydraulic support of claim 1, wherein the advancing jacks (26) of the left and right font bases (23, 24) are connected respectively with connection bases on the left and right sides of the stage loader via a left and a right front connectors (27, 28) articulated at the front end of the jacks the space between the front leg (30) and middle leg (32)and the space between the middle leg (32) and rear leg (33) respectively correspond to the drive head width of the front and rear flight conveyors plus an advancing step.
- 3. The FMMC face end hydraulic support of claim 1 or 2, wherein the O left shield beam is articulated with top ends of a left front connecting rod (11) and a left rear connecting rod the bottom ends of which are articulated with the left rear base thus forming a four-link mechanism; so do the right shield beam (10) and right rear base (16). (Ni
- 4. The FMMC face end hydraulic support of claim 1 or 2, wherein each of the left and right supports has one front leg two middle legs (32) and one rear leg (33). The FMMC face end support of claim 1 or 2, wherein the base side-pushing jacks (25) are provided on the left front base (23) and left middle base the tilt-prevention jacks between the supports include front tilt-prevention jacks (34) between the left and right front canopies and rear tilt-prevention jacks (35) respectively between the left and right middle canopies the left and right rear canopies and the left and right front connecting rods (11, 12). 14
- 6. A hydraulic support substantially as hereinbefore described with reference to the drawings and/or examples.
- 7. The steps, features, compositions and compounds disclosed herein or referred to or indicated in the specification and/or claims of this application, individually or collectively, and any and all combinations of any two or more of said steps or features. DATED this TWENTY SIXTH day of OCTOBER 2005 Yanzhou Coal Mining Company Limited by DAVIES COLLISON CAVE Patent Attorneys for the applicant(s)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410036477.1 | 2004-12-10 | ||
| CNB2004100364771A CN100371559C (en) | 2004-12-10 | 2004-12-10 | Hydraulic supporter for end of widening working face |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2005227376A1 true AU2005227376A1 (en) | 2006-06-29 |
| AU2005227376B2 AU2005227376B2 (en) | 2008-01-24 |
Family
ID=36647301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2005227376A Active AU2005227376B2 (en) | 2004-12-10 | 2005-10-26 | Hydraulic support for fully mechanized mining and caving face end |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100371559C (en) |
| AU (1) | AU2005227376B2 (en) |
| ZA (1) | ZA200507482B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308302A (en) * | 2013-06-28 | 2013-09-18 | 中煤北京煤矿机械有限责任公司 | Test method for hydraulic support balancing mechanism |
| US8590982B2 (en) | 2009-07-10 | 2013-11-26 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| CN116378734A (en) * | 2023-06-05 | 2023-07-04 | 中煤科工开采研究院有限公司 | Self-adaptive supporting device for hydraulic support |
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| CN101906983B (en) * | 2009-06-05 | 2013-06-12 | 李薇薇 | Tilting prevention device for fully mechanized mining hydraulic support |
| CN101852085B (en) * | 2010-05-27 | 2012-05-23 | 周超 | Bracket special for safety exit of coal face |
| CN102678154A (en) * | 2012-05-31 | 2012-09-19 | 山西东华机械有限公司 | Following end support |
| CN102877872B (en) * | 2012-10-25 | 2014-07-02 | 中煤北京煤矿机械有限责任公司 | Heavy large-mining-height full-protection large-dip-angle long-wall fully mechanized caving face automatic control supporting equipment |
| CN102926789A (en) * | 2012-11-16 | 2013-02-13 | 无锡阳工机械制造有限公司 | Confirming method of center distance and width of hydraulic bracket |
| CN104912579A (en) * | 2015-05-12 | 2015-09-16 | 四川华蓥山广能集团嘉华机械有限责任公司 | End bracket with scraper conveyor |
| CN104975865A (en) * | 2015-07-08 | 2015-10-14 | 三一重型装备有限公司 | Comprehensive mechanized coal mining face end head hydraulic rack |
| CN105134273B (en) * | 2015-09-23 | 2019-01-08 | 山西平阳广日机电有限公司 | Gob side entry retaining goaf multifunctional supporting equipment electrofluidic control device and control method |
| CN105221175A (en) * | 2015-10-12 | 2016-01-06 | 山东科技大学 | A kind of automatic moving type end hydraulic support based on parallel institution and application thereof |
| CN105927256A (en) * | 2016-04-12 | 2016-09-07 | 安徽省宿州市龙华机械制造有限公司 | Cross-head-tail support structure for hydraulic support |
| CN108533301B (en) * | 2018-06-14 | 2023-09-15 | 河南万合机械有限公司 | Front-rear end hydraulic support convenient to move and support moving method |
| CN109538267A (en) * | 2018-12-21 | 2019-03-29 | 中煤北京煤矿机械有限责任公司 | A kind of high stability high-adaptability overlength supported laneway end support equipment |
| CN109538269A (en) * | 2018-12-27 | 2019-03-29 | 中煤北京煤矿机械有限责任公司 | The simple face end support of offset |
| CN110410125A (en) * | 2019-07-24 | 2019-11-05 | 郑州四维新材料技术研究院有限公司 | A kind of one group of middle Sub-Level Caving face end support of two frame |
| CN110905575B (en) * | 2019-11-17 | 2024-04-05 | 山东塔高矿业机械装备制造有限公司 | Quick moving pile type hydraulic support and supporting method |
| CN112253116B (en) * | 2020-10-27 | 2022-05-31 | 山西三元煤业股份有限公司 | Method for caving coal at end of lagging working face |
| CN113944493A (en) * | 2021-10-09 | 2022-01-18 | 晋能控股装备制造集团金鼎山西煤机有限责任公司 | Transportation method for two special end supports in group |
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| GB1135942A (en) * | 1964-12-07 | 1968-12-11 | Groetschel Karl Maria | Improvements relating to roof supports for mine workings |
| US4010618A (en) * | 1974-01-19 | 1977-03-08 | Dowty Mining Equipment Limited | Mine roof support |
| GB1464557A (en) * | 1974-04-16 | 1977-02-16 | Dowty Mining Equipment Ltd | Fluid pressure apparatus |
| GB1464871A (en) * | 1974-05-02 | 1977-02-16 | Dowty Mining Equipment Ltd | Hydraulic roof support |
| CN86203486U (en) * | 1986-05-23 | 1987-10-03 | 煤炭工业部煤炭科学研究院重庆研究所 | Simple hydraulic support with slided top beam |
| GB2192659B (en) * | 1986-07-15 | 1990-04-11 | Gullick Dobson Ltd | Mine roof support roof engaging device |
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| CN2787833Y (en) * | 2004-12-10 | 2006-06-14 | 兖州煤业股份有限公司 | Hydraulic support for fully-mechanized top-coal caving face end |
-
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- 2004-12-10 CN CNB2004100364771A patent/CN100371559C/en active Active
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- 2005-09-16 ZA ZA200507482A patent/ZA200507482B/en unknown
- 2005-10-26 AU AU2005227376A patent/AU2005227376B2/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8590982B2 (en) | 2009-07-10 | 2013-11-26 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| US9670777B2 (en) | 2009-07-10 | 2017-06-06 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| CN103308302A (en) * | 2013-06-28 | 2013-09-18 | 中煤北京煤矿机械有限责任公司 | Test method for hydraulic support balancing mechanism |
| CN103308302B (en) * | 2013-06-28 | 2015-11-25 | 中煤北京煤矿机械有限责任公司 | Hydraulic support balanced controls test method |
| CN116378734A (en) * | 2023-06-05 | 2023-07-04 | 中煤科工开采研究院有限公司 | Self-adaptive supporting device for hydraulic support |
| CN116378734B (en) * | 2023-06-05 | 2023-08-25 | 中煤科工开采研究院有限公司 | Self-adaptive supporting device for hydraulic support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100371559C (en) | 2008-02-27 |
| AU2005227376B2 (en) | 2008-01-24 |
| ZA200507482B (en) | 2006-09-27 |
| CN1786419A (en) | 2006-06-14 |
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