WO2013120474A3 - Hydraulic circuit for longwall support - Google Patents
Hydraulic circuit for longwall support Download PDFInfo
- Publication number
- WO2013120474A3 WO2013120474A3 PCT/DE2013/000053 DE2013000053W WO2013120474A3 WO 2013120474 A3 WO2013120474 A3 WO 2013120474A3 DE 2013000053 W DE2013000053 W DE 2013000053W WO 2013120474 A3 WO2013120474 A3 WO 2013120474A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- longwall
- hydraulic circuit
- support
- pressure
- warning signal
- Prior art date
Links
- 238000005065 mining Methods 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
- E21D23/16—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)
- Excavating Of Shafts Or Tunnels (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention relates to a hydraulic circuit for the longwall support in underground mining for supporting a longwall by means of a plurality of support shields, which hydraulic circuit comprises a pressure sensor (19) in the annular piston line (10) of each cylinder/piston unit (4). When a predetermined maximum pressure is reached, the pressure sensor (19) emits a pressure warning signal (28), by which the entire longwall can be depressurized by means of a longwall cut-off valve (11). The pressure warning signal (28) is locked with respect to any control signal for one of the hydraulic valves.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380016356.8A CN104169525B (en) | 2012-02-18 | 2013-01-30 | Hydraulic circuit for force piece |
AU2013220787A AU2013220787B2 (en) | 2012-02-18 | 2013-01-30 | Hydraulic circuit for longwall support |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012003087.8 | 2012-02-18 | ||
DE102012003087 | 2012-02-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2013120474A2 WO2013120474A2 (en) | 2013-08-22 |
WO2013120474A3 true WO2013120474A3 (en) | 2014-05-22 |
Family
ID=47845675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2013/000053 WO2013120474A2 (en) | 2012-02-18 | 2013-01-30 | Hydraulic circuit for longwall support |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN104169525B (en) |
AU (1) | AU2013220787B2 (en) |
DE (1) | DE102013001581A1 (en) |
WO (1) | WO2013120474A2 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1255613B (en) * | 1963-04-22 | 1967-12-07 | Dowty Mining Equipment Ltd | Wandering longwall mining |
DE1458672B1 (en) * | 1951-01-28 | 1970-02-26 | Becorit Grubenausbau Gmbh | Control for a migrating hydraulic longwall construction |
DE1483906A1 (en) * | 1966-09-10 | 1970-07-23 | Konrad Grebe | Wandering longwall mining |
DE2838374B1 (en) * | 1978-09-02 | 1980-01-10 | Hemscheidt Maschf Hermann | Neighbor control for hydraulic step extension frames |
DE3128279A1 (en) * | 1981-07-17 | 1983-02-03 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | ADJUSTMENT CONTROL FOR A HYDRAULIC STAMP EXTENSION AND HYDRAULICALLY CONTROLLED CHECK VALVE |
WO2011006461A2 (en) * | 2009-07-16 | 2011-01-20 | Tiefenbach Control Systems Gmbh | Hydraulic circuit for longwall mining |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3804848A1 (en) | 1988-02-17 | 1989-08-31 | Steinbrueck Peter | Control device for inflatable inlays |
DE3840478C2 (en) * | 1988-12-01 | 1996-05-15 | Westfalia Becorit Ind Tech | Device for the emergency actuation of hydraulic expansion units for electrohydraulic expansion controls |
DE102004017712B4 (en) * | 2003-05-14 | 2019-05-09 | Tiefenbach Control Systems Gmbh | Hydraulic control for longwall construction |
-
2013
- 2013-01-30 WO PCT/DE2013/000053 patent/WO2013120474A2/en active Application Filing
- 2013-01-30 DE DE201310001581 patent/DE102013001581A1/en not_active Withdrawn
- 2013-01-30 AU AU2013220787A patent/AU2013220787B2/en not_active Expired - Fee Related
- 2013-01-30 CN CN201380016356.8A patent/CN104169525B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1458672B1 (en) * | 1951-01-28 | 1970-02-26 | Becorit Grubenausbau Gmbh | Control for a migrating hydraulic longwall construction |
DE1255613B (en) * | 1963-04-22 | 1967-12-07 | Dowty Mining Equipment Ltd | Wandering longwall mining |
DE1483906A1 (en) * | 1966-09-10 | 1970-07-23 | Konrad Grebe | Wandering longwall mining |
DE2838374B1 (en) * | 1978-09-02 | 1980-01-10 | Hemscheidt Maschf Hermann | Neighbor control for hydraulic step extension frames |
DE3128279A1 (en) * | 1981-07-17 | 1983-02-03 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | ADJUSTMENT CONTROL FOR A HYDRAULIC STAMP EXTENSION AND HYDRAULICALLY CONTROLLED CHECK VALVE |
WO2011006461A2 (en) * | 2009-07-16 | 2011-01-20 | Tiefenbach Control Systems Gmbh | Hydraulic circuit for longwall mining |
Also Published As
Publication number | Publication date |
---|---|
CN104169525A (en) | 2014-11-26 |
CN104169525B (en) | 2016-10-12 |
AU2013220787A1 (en) | 2014-09-18 |
AU2013220787B2 (en) | 2016-12-08 |
DE102013001581A1 (en) | 2013-08-22 |
WO2013120474A2 (en) | 2013-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2918852A4 (en) | Hydraulic pressure control device for machinery | |
MX2015006839A (en) | Electronically monitoring drilling conditions of a rotating control device during drilling operations. | |
EP2587074A4 (en) | Hydraulic pump control system for construction machinery | |
PL3036265T3 (en) | Polyurethane elastomeric seal for hydraulic pumps | |
GB2510454B (en) | Hydraulic system with open loop electrohydraulic pressure compensation | |
WO2011006461A3 (en) | Hydraulic circuit for longwall mining | |
TR201908818T4 (en) | Hydraulic rainwater control valve. | |
EP2587072A4 (en) | Flow control system for a hydraulic pump of construction machinery | |
EP2725239A4 (en) | Hydraulic control valve for construction machinery | |
GB2540253B (en) | Multiple piston assembly for safety valve | |
EP2820338A4 (en) | High pressure large bore well conduit system | |
EP3144266B8 (en) | Hydraulic arrangement for a forklift truck | |
EP2867446A4 (en) | Packer assembly having dual hydrostatic pistons for redundant interventionless setting | |
GB2536373B (en) | Variable diameter piston assembly for safety valve | |
EP3532804A4 (en) | Wear tolerant hydraulic / pneumatic piston position sensing using optical sensors | |
EP3019707A4 (en) | Gas turbine rapid response clearance control system with annular piston | |
EP2647850A4 (en) | Hydraulic pump control system for construction machinery | |
UA106290C2 (en) | Method for control of shield support | |
EP2945824A4 (en) | Slip control braking pump having a high pressure sealing structure | |
EP3311034A4 (en) | Load sensing hydraulic system for a working machine | |
MX359317B (en) | Method of placing distributed pressure gauges across screens. | |
HK1210250A1 (en) | Valve for the temperature-dependent control of at least one hydraulic load | |
WO2011124398A8 (en) | Protective device for a pressure line, pressure line section and hydraulic system | |
EP2808561A4 (en) | Hydraulic pressure control device for swing motor for construction machinery | |
EP3015608A4 (en) | Hydraulic pressure control device for construction machinery |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 1120130010054 Country of ref document: DE |
|
ENP | Entry into the national phase |
Ref document number: 2013220787 Country of ref document: AU Date of ref document: 20130130 Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13708655 Country of ref document: EP Kind code of ref document: A2 |