AU2004205126A1 - Face equipment for use in extraction - Google Patents
Face equipment for use in extraction Download PDFInfo
- Publication number
- AU2004205126A1 AU2004205126A1 AU2004205126A AU2004205126A AU2004205126A1 AU 2004205126 A1 AU2004205126 A1 AU 2004205126A1 AU 2004205126 A AU2004205126 A AU 2004205126A AU 2004205126 A AU2004205126 A AU 2004205126A AU 2004205126 A1 AU2004205126 A1 AU 2004205126A1
- Authority
- AU
- Australia
- Prior art keywords
- power unit
- support
- controllers
- support controllers
- face equipment
- 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.)
- Abandoned
Links
- 238000000605 extraction Methods 0.000 title claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 238000005065 mining Methods 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 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)
- Arrangements For Transmission Of Measured Signals (AREA)
- Earth Drilling (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Optical Communication System (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Pipe Accessories (AREA)
Description
The invention relates to a longwall face equipment for use in extraction performed in underground mining.
In the specification the term "comprising" shall be understood to have a broad meaning similar to the term "including" and will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps. This definition also applies to variations on the term "comprising" such as "comprise" and "comprises".
A longwall face equipment having several support units is known from German patent DE 195 28 644 Al. Each support unit is assigned to a support controller which is linked with a control strip for valves and sensors. All support controllers, or alternately individual support controllers, are equipped with an integrated module in the form of a computer unit, in order, by way of the control strip, to be able to evaluate the signals from the sensors and to carry out functions of the support units such as drawing or setting props, advancing, and moving the conveyor, by means of the valves and hydraulic components of the support units. In addition, every support unit features a lamp serving to illuminate the face, which is installed in a housing with flameproof or special-protection enclosure.
In the case of group control, the integrated computer module is assigned to one of the support units, with the computer module being located together with the lamp in a flameproof or special-protection housing. The computer module is connected to a power unit which is also located in the housing, which power unit transforms the input voltage of 230 V present at the lamp, which may be implemented in the form of an energy-saving lamp having a supply voltage of 230 V, to 12 V, since Mines Inspectorate rules stipulate that such controllers may only be operated as intrinsically safe units at a voltage such as 12 V. The housings assigned to the individual support units, or the power units or lamps located within them, are connected together by a 230 V power supply cable and suitable flameproof or special-protection plug systems for transmitting power and data. In the case of group control, the superordinate computer module is connected with the downstream support controllers by wires for data transmission and power supply.
In other longwall face equipments used in underground mining, a superordinate computer is placed upstream of groups of support controllers equipped with a computer module, with this superordinate computer providing for the galvanic isolation between a power unit and the support controllers or groups of support controllers which is required in order to make the longwall face equipment intrinsically safe. In this type of arrangement the individual support controllers are dependent on the superordinate computer, which may negatively affect support control. In addition, there is a high hardware need, since not only computer modules for the individual support controllers but also a superordinate computer are required.
Finally, a generic longwall face equipment as shown in Fig.
2 is known in the prior art. Fig. 2 shows a power unit 1, in the form of a double power unit to supply intrinsically safe power to two lines or groups I, II of support controllers 6. Power unit 1 is connected with a bidirectional coupler 2 through two connecting cables 3 in the form of sheathed cables for underground use and suitable plugs, not shown. An input voltage of 230 V is present at a power connection 4 of power unit 1, and this is transformed in the power unit to an intrinsically safe voltage, in this case 12 V. The bi-directional coupler 2 is linked by wires 5 with two groups I, II of support controllers 6 in differing electrical supply lines of the double power unit 1. By means of each support controller 6 the sensor systems and hydraulic systems of an electrohydraulic support unit, not shown here, can be evaluated or activated, with each support control unit 6 being for this purpose linked to a control strip, also not shown, for the sensors and valves of the related support unit.
Clearly it would be advantageous to provide longwall face equipment which simplifies the layouts described above.
Accordingly, with the foregoing in mind the present invention broadly resides in a longwall face equipment for use in extraction in underground mining, comprising electrohydraulically operated support units each having a support controller, with at least one power unit being provided that supplies at least two support controllers of differing support units with power, and with a bidirectional coupler being connected between the power unit and the at least two support controllers and providing galvanic isolation between the power unit and the support controllers and/or groups II) of support controllers and permitting communication between the two support controllers and/or groups II) of support controllers, characterized in that the coupler is integrated into the power unit or is flanged directly onto the housing of the power unit. The integration of the bi-directional coupler into the power unit or into the housing of the power unit makes it possible to eliminate the power supply lines which otherwise would be needed to make the connection between the outputs of the power unit and the bi-directional coupler. In addition, a separate bi-directional coupler as such can be eliminated, since integration of the coupler into the power unit can be achieved without impact on the price. The support controllers can be connected directly with the power unit, with the bi-directional coupler then allowing communication between the groups of support controllers connected to the coupler, these being galvanically isolated from one another. In this arrangement the bi-directional coupler integrated into the power unit or flanged directly onto the housing of the power unit provides for the galvanic isolation between the support controllers or groups of support controllers supplied with electrical power by the power unit.
In a preferred embodiment, the power unit includes a component such as a computer module, which has a data link with the support controllers, in order to route information to the latter on the electricity consumption, current peaks, voltages, etc. at any given moment. Based on the information on the power available at the time, the support controllers then can actively adapt their control, providing load management at the face.
It is preferable if the power unit is assigned to a support unit, in which case the power unit together with a lamp to illuminate the face may be located in a housing with flameproof, explosionproof or special-protection proof enclosure. The lamp or the power unit is preferably connected to a power supply having a 230 V input voltage.
The power unit transforms the voltage to 12 V, so that the bi-directional coupler and the support controllers receive an intrinsically safe power supply of 12 V.
The invention will now be described in greater detail, on the basis of an exemplary embodiment shown schematically in the figures. The figures show: Fig. 1 a longwall face equipment according to the present invention having a power unit with an integrated bi-directional coupler; and Fig. 2 a longwall face equipment known from the prior art.
Figure 1 shows a double unit 11 according to the present invention with a bi-directional coupler 12 integrated into the power unit 11 to supply power to the groups I, II of support controllers 6. As can be seen by comparing with Figure 2, the integration of the coupler 12 into the power unit 11 makes it possible to eliminate the two connection cables 3 which are required in the prior art, together with appropriate special connecting plugs. The double power unit 11 is designed to supply intrinsically safe power to two lines or groups I, II of support controllers 6. An input voltage of 230 V is present at a power connection 4 of power unit 11, and this is transformed in power unit 11 to an intrinsically safe voltage, in this case 12 V.
The bi-directional coupler 12 is connected through wires with two groups I, II of support controllers 6 in differing electrical supply lines of the double power unit 11. With each support controller 6 the sensor systems and hydraulic systems of an electrohydraulic support unit, not shown here, can be evaluated or activated, with each support controller 6 being connected for this purpose to a control strip, also not shown, for the sensors and valves of the related support unit.
By way of the bi-directional coupler 12 the controllers 6 of the two groups I, II are supplied intrinsically safe with power at a voltage of 12 V from power unit 11. The two wires 5 both supply power and transmit data and the bidirectional coupler 12 permits communication between the support controllers 6 of the two groups I, II, via the wires 5. In this arrangement the bi-directional coupler 12 simultaneously provides the function of galvanic isolation between power unit 11 and support controllers 6 or groups I, II of support controllers 6.
Each group I, II of support controllers 6 includes further connected support controllers, with this being implemented through the power supply and data transmission wires 7 shown as dotted lines, with the result that several support controllers 6 are connected with the related power unit 11 by means of the bi-directional coupler 12. The individual support controllers 6 or groups I, II are autonomous and galvanically isolated from the power unit 11.
It is preferable if the power unit 11 with the bidirectional coupler 12 is located in a housing 8 with flameproof or special-protection enclosure.
The figures do not show that the bi-directional coupler may also be eliminated as a separate component and/or may be integrated through circuitry directly in the power unit or only be flanged directly onto the housing of the power unit. The figures also do not show that the power unit may be equipped with intelligence, such as, in particular, a computer module, in order to be able to transmit to the support controllers information on the power consumption, current peaks, voltages, etc. at any given moment so that the support controllers may exercise active control.
Claims (4)
1. A longwall face equipment for use in extraction in underground mining, comprising electrohydraulically operated support units each having a support controller, with at least one power unit being provided that supplies at least two support controllers of differing support units with power, and with a bi-directional coupler being connected between the power unit and the at least two support controllers and providing galvanic isolation between the power unit and the support controllers and/or groups II) of support controllers and permitting communication between the two support controllers and/or groups II) of support controllers, characterized in that the coupler is integrated into the power unit or is flanged directly onto the housing of the power unit.
2. The longwall face equipment according to Claim 1, characterized in that the power unit includes a component having a data link with the support controllers in order to transmit to the support controllers information on the power consumption, current peaks, voltages or similar at any given moment.
3. The longwall face equipment according to Claim 1 or 2, characterized in that the power unit is located in a housing with flameproof, explosionproof or special- protection proof enclosure.
4. The longwall face equipment according to Claim 3, characterized in that the power unit together with a lamp, which is used to illuminate the face, is located in the housing and/or is implemented in the form of a double power unit. 8 A longwall face equipment for use in extraction in underground mining substantially as herein described in the embodiment in the detailed description of the invention with reference to the drawings. DATED THIS TWENTIETH DAY OF AUGUST 2004 DBT Automation GmbH By PIZZEYS PATENT AND TRADE MARK ATTORNEYS
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20314011U DE20314011U1 (en) | 2003-09-08 | 2003-09-08 | Face equipment for a mining company |
| DE20314011.7 | 2003-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2004205126A1 true AU2004205126A1 (en) | 2005-03-24 |
Family
ID=29558175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2004205126A Abandoned AU2004205126A1 (en) | 2003-09-08 | 2004-08-20 | Face equipment for use in extraction |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20050053430A1 (en) |
| CN (1) | CN1605714B (en) |
| AU (1) | AU2004205126A1 (en) |
| DE (1) | DE20314011U1 (en) |
| GB (1) | GB2405664A (en) |
| PL (1) | PL213034B1 (en) |
| RU (1) | RU2358112C2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010048285B4 (en) * | 2010-10-14 | 2017-01-05 | Kruno Pranjic | Illumination arrangement in underground mining and method for controlling an underground lighting |
| CN102128042B (en) * | 2010-12-09 | 2013-10-16 | 重庆航天工业公司 | Hydraulic support electronic control system |
| CN102071957A (en) * | 2011-03-02 | 2011-05-25 | 中煤北京煤矿机械有限责任公司 | Controller of mine-used intrinsic safety type hydraulic support electrohydraulic control device |
| CN102418543A (en) * | 2011-11-22 | 2012-04-18 | 郑州煤矿机械集团股份有限公司 | Wired man-machine interface device for support controller |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604724A (en) * | 1983-02-22 | 1986-08-05 | Gomelskoe Spetsialnoe Konstruktorsko-Tekhnologicheskoe Bjuro Seismicheskoi Tekhniki S Opytnym Proizvodstvom | Automated apparatus for handling elongated well elements such as pipes |
| US4753484A (en) * | 1986-10-24 | 1988-06-28 | Stolar, Inc. | Method for remote control of a coal shearer |
| DE3715590A1 (en) * | 1987-05-09 | 1988-12-01 | Gewerk Eisenhuette Westfalia | POWER SUPPLY DEVICE FOR ELECTROHYDRAULIC EXTENSION CONTROLS OR OTHER CONTROL SYSTEMS IN MINING AND PITCHING |
| DE3715593C1 (en) * | 1987-05-09 | 1988-09-15 | Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De | |
| DE3715586C1 (en) * | 1987-05-09 | 1988-09-22 | Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De | |
| CN2054828U (en) * | 1989-08-17 | 1990-03-21 | 杨正光 | Electronic complex controller used in underground coal mining district |
| DE19925738B4 (en) * | 1999-06-07 | 2017-02-09 | Caterpillar Global Mining Europe Gmbh | Control unit for electrohydraulic control systems |
-
2003
- 2003-09-08 DE DE20314011U patent/DE20314011U1/en not_active Expired - Lifetime
-
2004
- 2004-08-20 AU AU2004205126A patent/AU2004205126A1/en not_active Abandoned
- 2004-08-23 GB GB0418742A patent/GB2405664A/en not_active Withdrawn
- 2004-09-03 PL PL369880A patent/PL213034B1/en unknown
- 2004-09-07 US US10/935,617 patent/US20050053430A1/en not_active Abandoned
- 2004-09-07 CN CN200410076814XA patent/CN1605714B/en active Active
- 2004-09-07 RU RU2004126966/03A patent/RU2358112C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2405664A (en) | 2005-03-09 |
| PL213034B1 (en) | 2012-12-31 |
| PL369880A1 (en) | 2005-03-21 |
| RU2004126966A (en) | 2006-02-27 |
| GB0418742D0 (en) | 2004-09-22 |
| CN1605714B (en) | 2010-09-08 |
| RU2358112C2 (en) | 2009-06-10 |
| DE20314011U1 (en) | 2003-11-13 |
| CN1605714A (en) | 2005-04-13 |
| US20050053430A1 (en) | 2005-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TC | Change of applicant's name (sec. 104) |
Owner name: DBT GMBH Free format text: FORMER NAME: DBT AUTOMATION GMBH |
|
| MK5 | Application lapsed section 142(2)(e) - patent request and compl. specification not accepted |