GB1111605A - Walking hydraulic mine support unit - Google Patents
Walking hydraulic mine support unitInfo
- Publication number
- GB1111605A GB1111605A GB2640/66A GB264066A GB1111605A GB 1111605 A GB1111605 A GB 1111605A GB 2640/66 A GB2640/66 A GB 2640/66A GB 264066 A GB264066 A GB 264066A GB 1111605 A GB1111605 A GB 1111605A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- time switch
- movement
- cable
- signal
- 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.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/12—Control, e.g. using remote control
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/12—Control, e.g. using remote control
- E21D23/14—Effecting automatic sequential movement of supports, e.g. one behind the other
- E21D23/148—Wireless transmission of signals or commands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
- H01H43/10—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
- H01H43/16—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a predetermined plurality of cycles of operation
Abstract
1,111,605. Hydraulic mine roof supports. GEWERKSCHAFT EISENHœTTE WESTFALIA. Jan.20, 1966 [Jan. 21, 1965; Feb.27, 1965], No.2640/66. Heading F1P. A walking hydraulic mine roof support is arranged to perform a movement cycle by a control unit having a clockwork time switch 54 which when set in operation automatically initiates e.g. electrically or hydraulically each individual movement within the movement cycle in the correct sequence and allows a sufficient time duration for normal completion of each individual movement. The clockwork time switch 54 can be set in operation from a remote position by a signal emitted by a portable wireless transmitter 46. The signal is detected by a receiver 45 which thereby operates to energize an electromagnet 50 which in turn causes an armature 50' to release a brake 51 and start the clockwork time switch. The time switch comprises a rotatable cylinder 55 having dogs 56-59 which sequentially operate pilot valves 64-67 controlling a servomotor 49 adapted to actuate slide valves in a control block 13 to direct pressure fluid in sequence through conduits 40-43 to cause the support to perform a movement cycle. The receiver 45 is arranged to detect a signal of predetermined frequency whereby supports having receivers set to different frequencies can be selected for operation by suitable adjustment of the signal frequency transmitted. Each roof support preferably comprises two frames each having two props and each being interconnected by a hydraulic cylinder operable to move one frame relative to the other. The time switch may comprise, Fig.1 (not shown) a pointer (16) held in a cocked position by a lever (34) releasable by a Bowden cable (30) and rotatable for a predetermined interval of time before it initiates the first individual movement by completing an electrical circuit through a contact (18). The contacts (18, 20, 22, 23, 25, 26) correspond, respectively, to relief of pressure in the first frame; advance of the first frame; re-setting of the first frame; relief of pressure in the second frame; advance of the second frame; and re-setting of the second frame. After the pointer has passed all its contacts it may be arranged to engage one end (32) of a cable (30) movable to release the cocking lever (34) associated with the time switch of another roof support in order to automatically initiate its movement cycle. In a modification a cable having dogs is movable so as to simultaneously operate the time switches of a plurality of supports spaced along the working face or alternatively each time switch in turn. A blocking device prevents further movement of the cable until the movement cycles have been completed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG0042622 | 1965-01-21 | ||
DEG42952A DE1201286B (en) | 1965-01-21 | 1965-02-27 | Retractable hydraulic longwall construction |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1111605A true GB1111605A (en) | 1968-05-01 |
Family
ID=25978659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2640/66A Expired GB1111605A (en) | 1965-01-21 | 1966-01-20 | Walking hydraulic mine support unit |
Country Status (6)
Country | Link |
---|---|
US (1) | US3434389A (en) |
BE (1) | BE675336A (en) |
DE (1) | DE1201286B (en) |
FR (1) | FR1464327A (en) |
GB (1) | GB1111605A (en) |
NL (1) | NL6600841A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142074A (en) * | 1983-06-21 | 1985-01-09 | Dobson Park Ind | Control of mine roof supports |
CN103114867A (en) * | 2013-02-22 | 2013-05-22 | 广州日滨科技发展有限公司 | Automatic straightening method and system for hydraulic supports and scraper conveyors of fully-mechanized coal mining working faces |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1583072B1 (en) * | 1967-10-18 | 1970-01-15 | Bergwerksverband Gmbh | Circuit, especially for controlling support frames or jacks for hydraulic longwall mining in underground mining |
GB1295079A (en) * | 1969-05-28 | 1972-11-01 | ||
SU797601A3 (en) * | 1970-08-04 | 1981-01-15 | Геверкшафт Эйзенхютте Вестфалия (Фирма) | Hydraulic device for control of displaceable support sections in mines |
DE2250296C3 (en) * | 1972-10-13 | 1978-03-16 | Gewerkschaft Eisenhuette Westfalia, 4670 Luenen | Knife shield propulsion device for propelling underground cavities, such as in particular tunnels, tunnels and the like |
GB1571503A (en) * | 1976-01-24 | 1980-07-16 | Dowty Mining Equipment Ltd | Longwall mining apparatus |
GB2153971B (en) * | 1984-02-08 | 1988-01-13 | Dobson Park Ind | Valve assembly |
DE3404302C1 (en) * | 1984-02-08 | 1985-06-05 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Control device for a hydraulic stepping frame |
CN101871354A (en) * | 2010-06-04 | 2010-10-27 | 中煤北京煤矿机械有限责任公司 | Large-step continuous supporting type forepole and forepole moving method thereof |
CN101864975B (en) * | 2010-06-04 | 2012-06-27 | 中煤北京煤矿机械有限责任公司 | Rear frame-to-front frame type continuous supporting advanced frame and frame moving method thereof |
DE102011012655B4 (en) * | 2011-02-28 | 2015-09-24 | Kruno Pranjic | Method for operating an underground hydraulic walking structure |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB961225A (en) * | 1961-06-12 | 1964-06-17 | Electro Hydraulics Ltd | Hydraulically operated advancing roof support systems |
GB959492A (en) * | 1961-11-21 | 1964-06-03 | Dowty Technical Developements | Mining apparatus |
-
1965
- 1965-02-27 DE DEG42952A patent/DE1201286B/en active Pending
-
1966
- 1966-01-06 FR FR44985A patent/FR1464327A/en not_active Expired
- 1966-01-19 BE BE675336D patent/BE675336A/xx unknown
- 1966-01-20 GB GB2640/66A patent/GB1111605A/en not_active Expired
- 1966-01-21 NL NL6600841A patent/NL6600841A/xx unknown
-
1967
- 1967-09-29 US US671896A patent/US3434389A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142074A (en) * | 1983-06-21 | 1985-01-09 | Dobson Park Ind | Control of mine roof supports |
FR2557918A1 (en) * | 1983-06-21 | 1985-07-12 | Dobson Park Ind | CONTROL SYSTEM. |
CN103114867A (en) * | 2013-02-22 | 2013-05-22 | 广州日滨科技发展有限公司 | Automatic straightening method and system for hydraulic supports and scraper conveyors of fully-mechanized coal mining working faces |
Also Published As
Publication number | Publication date |
---|---|
FR1464327A (en) | 1966-12-30 |
BE675336A (en) | 1966-07-19 |
DE1608504B1 (en) | 1970-09-24 |
US3434389A (en) | 1969-03-25 |
NL6600841A (en) | 1966-07-22 |
DE1201286B (en) | 1965-09-23 |
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