GB959492A - Mining apparatus - Google Patents
Mining apparatusInfo
- Publication number
- GB959492A GB959492A GB41622/61A GB4162261A GB959492A GB 959492 A GB959492 A GB 959492A GB 41622/61 A GB41622/61 A GB 41622/61A GB 4162261 A GB4162261 A GB 4162261A GB 959492 A GB959492 A GB 959492A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conveyer
- roof support
- roof
- advance
- advancing
- 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
- 238000005065 mining Methods 0.000 title 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/146—Transmission of signals and commands by cable
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Control Of Conveyors (AREA)
- Branching, Merging, And Special Transfer Between Conveyors (AREA)
- Intermediate Stations On Conveyors (AREA)
Abstract
959,492. Advancing mine roof supports. DOWTY TECHNICAL DEVELOPMENTS Ltd. Nov. 8, 1962 [Nov. 21, 1961], No. 41622/61. Heading F1P. A mine roof support control apparatus for a roof support assembly having a series of advanceable roof support units A1 . . . G4 some of which have advancing means 5 for a conveyer 3 comprises an address selector 7 for selecting a roof support for an advancing operation and which selector at the same time selects for operation the conveyer advancing means of another roof support unit. In Fig. 1 the roof support units are divided into groups A, B, C ... each group comprising four roof support units each connected to the conveyer by a jack 4, the first support of each group being further connected to the conveyer by a conveyer advancing jack 5. Each roof support includes a beam which rests on the ground and carries two or more hydraulically operable telescopic props surmounted by a roof bar (not shown). The supply of hydraulic fluid to each roof support is controlled by a separate electro-hydraulic valve S, Fig. 2 which is energized by manual or automatic operation of the address selector 7. When a roof support of a group is selected for advance the first roof support of four other groups is also automatically selected for conveyer advance together with a further roof support of a group on the opposite side of the four groups selected for conveyer advance e.g. if support B3 is selected for advance then roof supports C1, D1, E1 and F1 are selected for advancing the conveyer 3 towards the working face 1 and roof support G3 is also selected. A polarity switch 19 in the address selector 7 determines'which of the two roof supports selected is advanced and its position is chosen in dependence on whether the cutter 2, Fig. 1 is moving from left to right or from right to left. Each group of roof supports has a junction box A, B, C ... similar in construction to junction box G (Fig. 2) containing a number of electrical relays connected by wires to the address selector 7, a sequence control 9 and a conveyer advance control 11. The address selector 7 can connect via the solenoid valves S, the props and jacks 4 of any roof support to the sequence control 9 whereby a pair of potentiometers 15, 16 indicate to the sequence control the extension of the jacks and the hydraulic pressure in the props, so that the operator can see the condition of the roof support selected. The sequence control is arranged to supply electrical current of either polarity and also alternating current in sequence so that the solenoid valves S are operable to lower the prop, advance the support unit and raise the prop, and on the first unit of each group to control the conveyer advance. The address selector 7 comprises two parts 17, 18; part 18 can select a wire each from rows b and c, and determines which two groups of supports is selected; and part 17 can select a particular support of the two groups by means of a line selector 20 and the polarity switch 19. Each relay coil has an associated rectifier so that the position of the polarity switch 19 in the part 17 of the selector determines whether the roof support on the left of the conveyer advancing units or those on the right, are available for operation. In Fig. 3 (not shown) is a table showing which of the relays in junction box G are energized when roof supports A1-A4 are selected sequentially during left to right cutter advance (first column) and right to left cutter advance (second column). In another embodiment (Fig. 4 not shown) selection of a roof support for an advancing operation causes the selection for operation of the four conveyer advancing jacks 5 on either side of the roof support selected for advance. Which four conveyer advancing jacks are operated depends on whether left to right or right to left advance of the series of roof supports is taking place, which in turn depends on which of two possible lines, common to all the junction boxes, is being used.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB41622/61A GB959492A (en) | 1961-11-21 | 1961-11-21 | Mining apparatus |
US238587A US3285015A (en) | 1961-11-21 | 1962-11-19 | Mining apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB41622/61A GB959492A (en) | 1961-11-21 | 1961-11-21 | Mining apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB959492A true GB959492A (en) | 1964-06-03 |
Family
ID=10420544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB41622/61A Expired GB959492A (en) | 1961-11-21 | 1961-11-21 | Mining apparatus |
Country Status (2)
Country | Link |
---|---|
US (1) | US3285015A (en) |
GB (1) | GB959492A (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1206831B (en) * | 1964-12-10 | 1965-12-16 | Bergwerksverband Gmbh | Method for the automatic backing of elements of a group of such supporting units forming a hydraulic longwall construction |
DE1201286B (en) * | 1965-01-21 | 1965-09-23 | Gewerk Eisenhuette Westfalia | Retractable hydraulic longwall construction |
GB1121542A (en) * | 1965-03-18 | 1968-07-31 | Gullick Ltd | Improvements in or relating to the remote control of supports or chocks in self-advancing mine roof support systems |
DE1583080A1 (en) * | 1966-10-14 | 1970-04-23 | Dowty Mining Equipment Ltd | Pit ceiling extension |
GB1235872A (en) * | 1967-06-14 | 1971-06-16 | Bergwerksverband Gmbh | Self-advancing pit-prop systems |
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 |
BE794193A (en) * | 1972-03-16 | 1973-05-16 | Gewerk Eisenhuette Westfalia | SEQUENTIAL CONTROL SYSTEM FOR AUTOMATIC RIPING OF A GROUP OF SUPPORT ELEMENTS |
US3908318A (en) * | 1974-03-22 | 1975-09-30 | Ambar Investment | Method of vibration dampening by surface griding |
GB1500713A (en) * | 1974-04-10 | 1978-02-08 | Gullick Dobson Ltd | Control means for mine roof supports |
GB1531246A (en) * | 1975-07-29 | 1978-11-08 | Gullick Dobson Ltd | Mine roof support control systems |
GB1571503A (en) * | 1976-01-24 | 1980-07-16 | Dowty Mining Equipment Ltd | Longwall mining apparatus |
JPS5317502A (en) * | 1976-07-31 | 1978-02-17 | Taiheiyo Eng | Selfftravelling frame remoteecontroller |
GB1576317A (en) * | 1976-08-20 | 1980-10-08 | Dobson Park Ind | Control of self-advancing mine roof supports |
FR2336545A1 (en) * | 1976-12-13 | 1977-07-22 | Gullick Dobson Ltd | Position monitor for mine roof support units - supplies, collects and stores data indicating advancing movement of props. |
AU544811B2 (en) * | 1979-10-19 | 1985-06-13 | Mining Supplies Ltd. | Control of long wall mining machine |
DE3207517C2 (en) * | 1982-03-03 | 1985-09-05 | Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum | Control for support frames for underground mining |
DE3520617C2 (en) * | 1985-06-08 | 1995-08-17 | Westfalia Becorit Ind Tech | Method and device for the automated backing of a face conveyor in coal extraction struts |
DE3827559C1 (en) * | 1988-08-13 | 1989-09-07 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De | |
DE4011091A1 (en) * | 1990-04-06 | 1991-10-10 | Gewerk Eisenhuette Westfalia | METHOD FOR THE AUTOMATED MILLING OF COAL AND THE LIKE |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB781643A (en) * | 1954-04-12 | 1957-08-21 | Klockner Bergbau Victor Ickern | Mobile system of mine roof support |
US3097829A (en) * | 1959-01-16 | 1963-07-16 | Gullick Ltd | Roof support in mines |
US3120105A (en) * | 1959-09-25 | 1964-02-04 | Coal Industry Patents Ltd | Self-advancing mine roof supports |
-
1961
- 1961-11-21 GB GB41622/61A patent/GB959492A/en not_active Expired
-
1962
- 1962-11-19 US US238587A patent/US3285015A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3285015A (en) | 1966-11-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB959492A (en) | Mining apparatus | |
US3207041A (en) | Hydraulically operated advancing roof support systems and monitoring systems therefor | |
GB1521703A (en) | Hydraulic control system with sequenced hydraulic jacks | |
US3301136A (en) | Advanceable roof support assemblies | |
US3198083A (en) | Control system for mine roof supports | |
US3243964A (en) | Mining apparatus | |
US4159671A (en) | Self-advancing mine roof supports | |
GB1016061A (en) | Mine roof support | |
US3672176A (en) | Roof supporting systems | |
US3381581A (en) | Roof support assembly having electrically operated signalling means | |
US3606758A (en) | Hydraulic pit prop arrangements | |
GB1287565A (en) | Improvements in or relating to a self-advancing mine roof support | |
GB905379A (en) | Improvements relating to hydraulic mine roof supporting devices | |
GB990837A (en) | Roof support assembly | |
US3241654A (en) | Mining apparatus with automatically advancing jacks | |
US4225271A (en) | Hydraulically operated mine roof support and a control arrangement thereof | |
GB1202358A (en) | Mine roof support systems | |
ES8203457A1 (en) | Hydraulic control means | |
US3589241A (en) | Mine roof support systems | |
GB1079172A (en) | Mine roof support remote control systems | |
US3521455A (en) | Mining conveyor control means | |
GB991011A (en) | Roof support assembly | |
GB1251968A (en) | ||
GB2101662A (en) | Hydraulically-operated devices | |
GB1112647A (en) | Roof support assembly suitable for use in mines |