GB1239833A - A control system for reorientating longwall faces in mine workings - Google Patents
A control system for reorientating longwall faces in mine workingsInfo
- Publication number
- GB1239833A GB1239833A GB24447/68A GB2444768A GB1239833A GB 1239833 A GB1239833 A GB 1239833A GB 24447/68 A GB24447/68 A GB 24447/68A GB 2444768 A GB2444768 A GB 2444768A GB 1239833 A GB1239833 A GB 1239833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- line
- frames
- guide frame
- valve
- 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
- 230000003245 working effect Effects 0.000 title 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
- E21D23/16—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 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
- E21D23/142—Measuring the advance of support units with respect to external points of reference
-
- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
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)
- Fluid-Pressure Circuits (AREA)
Abstract
1,239,833. Advancing mine roof support systems. BERGWERKSVERBAND G.m.b.H. 22 May, 1968 [31 May, 1967], No. 24447/68. Heading E1P. [Also in Division F2] In an advancing mine roof support assembly for a longwall comprising a series of frames each connected to the conveyor by a double-acting jack and arranged in groups for automatic control to maintain alignment relative to adjacent groups, each group of frames has a series of auxiliary frames whose incremental advance is determined relative to a guide frame. The control system includes a group switching arrangement which in predetermined sequence passes control pulses from the auxiliary frames to a comporator control to which the guide frame is connected in parallel, see Fig. I (not shown). The comporator control for each group of frames comprises a cam mechanism 40 actuated by two jack units 43, 45 operating in opposite directions. An input 21 to the control leads from the group switching arrangement whilst pulses from the guide frame are fed thereto via a line 33. An input pulse fed to line 21 passes through a valve 48 to a line 21a thereby effecting a one step advance of the associated auxiliary frame, the valve then being closed by the unit 43. The second step advance of the said frame is effected by a further control pulse fed through the line 21 and a valve 49 until this valve in turn is closed by further rotation of the cam mechanism by the unit 43. Pulses fed from the guide frame to line 33 rotate the cam mechanism in the opposite direction to open the valves 51, 52 in sequence and close the valves 48, 49; the sequential opening of the valves 51, 52 causing two step advance of the next auxiliary frame of the group via a line 32. The arrangement is such that the auxiliary frames can only beat the guide frame by a maximum of two steps. Logic components of electrical, pneumatic or hydraulic design may be interconnected in the control line of the system and to this end line 33 leads to a. computerised control for the whole system.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1533720A DE1533720C3 (en) | 1967-05-31 | 1967-05-31 | Device for aligning or pivoting struts in underground mining |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1239833A true GB1239833A (en) | 1971-07-21 |
Family
ID=5675683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24447/68A Expired GB1239833A (en) | 1967-05-31 | 1968-05-22 | A control system for reorientating longwall faces in mine workings |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1239833A (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 |
CN102226410A (en) * | 2011-05-24 | 2011-10-26 | 中煤北京煤矿机械有限责任公司 | Hydraulic support advancing mechanism and thin coal seam hydraulic support |
-
1968
- 1968-05-22 GB GB24447/68A patent/GB1239833A/en not_active Expired
Cited By (4)
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. |
AU568367B2 (en) * | 1983-06-21 | 1987-12-24 | Joy Mm Delaware, Inc. | Control system for mine roof support |
CN102226410A (en) * | 2011-05-24 | 2011-10-26 | 中煤北京煤矿机械有限责任公司 | Hydraulic support advancing mechanism and thin coal seam hydraulic support |
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