CN104132646B - Inclination angle monitoring sensor - Google Patents
Inclination angle monitoring sensor Download PDFInfo
- Publication number
- CN104132646B CN104132646B CN201410361606.8A CN201410361606A CN104132646B CN 104132646 B CN104132646 B CN 104132646B CN 201410361606 A CN201410361606 A CN 201410361606A CN 104132646 B CN104132646 B CN 104132646B
- Authority
- CN
- China
- Prior art keywords
- ball
- hollow ball
- conduction
- light
- inclination angle
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
- G01C2009/066—Electric or photoelectric indication or reading means optical
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to a kind of inclination angle monitoring sensor, it is characterized in that: by support, be fixed on the hollow ball on support, be fixed on the horizontal supporting plate in hollow ball, be placed in the spinning ball in the spherical groove on horizontal supporting plate, be individually fixed on spinning ball, the light cylinder of bottom and conduction pendulum, be located at the conduction Internal Spherical Surface of hollow ball lower semisphere, to be located in light cylinder and to the light emitting diode of light cylinder top window emission of light, be located at the ball contact of conduction pendulum lower end, be embedded in the insulation planchet of the corresponding circle spherical contact in conduction Internal Spherical Surface, be located at light activated element and the time relay composition of hollow ball episphere inside surface.Which solve the problem that existing shaft tower device for monitoring inclination monitoring direction is single, achieve 360 degree and monitor without dead angle, thus improve the reliability of monitoring device.
Description
Technical field
The present invention relates to a kind of inclination angle monitoring sensor, be applicable to tower class inclination monitoring system etc.
Background technology
In recent years, the research of shaft tower inclination monitoring technology is got more and more, as CN201331339 discloses a kind of to device for monitoring inclination of transmission line tower, CN103162667 discloses a kind of gradient of extra-high voltage tower on-line monitoring system and monitoring method, CN101650175 discloses a kind of device for monitoring inclination of transmission line tower, but all there are the following problems: above-mentioned monitoring device or system adopt the mode of installing single shaft or double-shaft tilt angle sensor on shaft tower to realize the monitoring of horizontal and vertical both direction, there is monitoring dead angle, and shaft tower vergence direction is usually by ectocine, random and uncontrolled, therefore, the monitoring function of above-mentioned monitoring device or system is limited, affect the judgement at Dui Gan Ta angle of inclination, thus affect postorder early warning.
Summary of the invention
The object of the invention is to provide a kind of inclination angle monitoring sensor, to solve existing single shaft or the single problem of double-shaft tilt angle sensor monitoring direction, realizing 360 degree and monitoring without dead angle, thus improving the reliability of monitoring system.
Technical scheme of the present invention is:
A kind of inclination angle monitoring sensor, is characterized in that: by support, be fixed on the hollow ball on support, be fixed on the horizontal supporting plate in hollow ball, be placed in the spinning ball in the spherical groove on horizontal supporting plate, be individually fixed on spinning ball, the light cylinder of bottom and conduction pendulum, be located at the conduction Internal Spherical Surface of hollow ball lower semisphere, to be located in light cylinder and to the light emitting diode of light cylinder top window emission of light, be located at the ball contact of conduction pendulum lower end, be embedded in the insulation planchet of the corresponding circle spherical contact in conduction Internal Spherical Surface, be located at light activated element and the time relay composition of hollow ball episphere inside surface, the described time relay, conduction pendulum, ball contact, conduction Internal Spherical Surface and power supply form closed-loop path I, the described time relay, light emitting diode and power supply form closed-loop path II, and described light activated element utilizes data line and data to launch transmitting device to be connected, the centre of sphere of described spinning ball, described light cylinder, the conduction center line of pendulum overlaps with the axis of the vertical direction of hollow ball.
Above-mentioned inclination angle monitoring sensor, the centre of sphere of described spinning ball overlaps with the centre of sphere of hollow ball.
Above-mentioned inclination angle monitoring sensor, described hollow ball is made up of the upper and lower hemisphere of split, described upper and lower hemisphere and bracket lip are along being respectively equipped with annular horizontal outer and utilizing described annular horizontal outer and the bolt pair be evenly arranged on annular horizontal outer to be connected and fixed, and the surface of contact of the annular horizontal outer of described upper and lower hemisphere is provided with grommet type seals.
Above-mentioned inclination angle monitoring sensor, described horizontal supporting plate is supported in the conduction Internal Spherical Surface top of described hollow ball lower semisphere, and described spherical groove is located at the home position of horizontal supporting plate and is fitted tightly with described spinning ball sphere.
Above-mentioned inclination angle monitoring sensor, be provided with in described spinning ball and described light cylinder and the cavity that pendulum upper links chamber communicates that conducts electricity, the described time relay is located in described cavity so that the time relay respectively and light emitting diode and conducting electricity between pendulum connect up.
Above-mentioned inclination angle monitoring sensor, described light activated element by being encapsulated in the photoresistance of described hollow ball episphere inside surface uniformly, many positive and negative electric conductive filaments that from top to bottom uniform interval is laid in photoresistance form, described positive and negative electric conductive filament is all guided the winding displacement of being located at hollow ball outside surface setting-in into and is connected electrically, the data line that described winding displacement output terminal is used for launching with the data of hollow ball outside transmitting device is electrically connected, and transmits electric signal to launch transmitting device to data.
Above-mentioned inclination angle monitoring sensor, described support is provided with many brace rods matched with described hollow ball lower semisphere outside surface.
Above-mentioned inclination angle monitoring sensor, described conduction pendulum lower end offers blind hole, ball contact heads in blind hole by described insulation planchet, and being connected with spring between described blind hole bottom surface and ball contact, when departing from ball contact to make insulation planchet, ball contact is ejected blind hole and to contact conducting closed-loop path with conduction Internal Spherical Surface by spring.
The invention has the beneficial effects as follows:
1, the insulation planchet that spinning ball when shaft tower is upright, the ball contact of the conduction pendulum of its underpart and the conduction Internal Spherical Surface of hollow ball lower semisphere is arranged contacts, and closed-loop path I, II is all in off state, but when shaft tower run-off the straight, the conduction Internal Spherical Surface of hollow ball lower semisphere tilts with shaft tower under the drive of hollow ball support, and spinning ball maintains the original state under the Action of Gravity Field of conduction pendulum, the spherical groove of spinning ball on horizontal supporting plate relatively rotates, then relatively rotate between spinning ball and hollow ball, the ball contact of conduction pendulum is separated with insulation planchet, contact with conduction Internal Spherical Surface and connected closed-loop path I also start-up time relay, the time relay closes through setting-up time back contact, thus connect closed-loop path II, light emitting diode obtains electroluminescence, light beam is by the photoresistance on light cylinder top window directive hollow ball episphere inside surface, the photoresistance at its irradiation position place is switched on, launch to data the mould electric signal that address information is carried in transmitting device transmission by data line, the CPU that data launch transmitting device can relatively rotate angle according to photoresistance position conversion spinning ball switched on, namely the angle of inclination of shaft tower is obtained, and be transmitted into user by wireless communication module, realize monitoring, warning function,
2, because no matter shaft tower to which direction tilts, sphere structure and the conduction pendulum of spinning ball all can ensure that itself and hollow ball relatively rotate, photoresistance corresponding on equal energy conducting hollow ball, what all can record spinning ball relatively rotates angle, namely the angle of inclination of shaft tower is obtained, achieve and 360 degree, shaft tower is monitored without dead angle, compared with existing obliquity sensor, significantly improve the reliability of monitoring device;
3, owing to have employed the time relay, effectively avoid shaft tower and shake the situation that wrong report occurs the device brought, further increase the reliability of monitoring device;
4, comprehensive reliable monitoring function decreases a large amount of interruption maintenances and hotline maintenance workload, decrease the repeatability caused because of annual plan prerun light maintenance to have a power failure, can under live state, carry out transmission line of electricity monitoring, generally, every bar transmission line of electricity every year can the about tens million of kilowatt hour of many deliveries, has saved the travel of line walking, machine-team takes about hundreds of thousands unit.Alleviate the labour intensity of track walker greatly simultaneously, decrease the probability that personal injury occurs, tour originally, need personnel to be timed to circuit to carry out, and transmission line of electricity is all in the place that geologic condition is more severe, The present invention reduces the needs of personnel's timed patrol, to guaranteeing that personal safety and device security are very favourable;
5, the shaft tower inclination subtle change being manually difficult to observe with the naked eye can be found, help operation department to scent a hidden danger early, fix a breakdown in time, thus improve transmission line of electricity reliability of operation.
Accompanying drawing explanation
Fig. 1 is using state schematic diagram of the present invention.
Fig. 2 is A portion structure for amplifying schematic diagram in Fig. 1.
Fig. 3 is B portion structure for amplifying schematic diagram in Fig. 1.
Fig. 4 is C portion structure for amplifying schematic diagram in Fig. 1.
Fig. 5 is the arrangement schematic diagram of light activated element of the present invention.
In figure, sequence number illustrates: 1 data launch transmitting device, 2 data lines, 3 winding displacements, 4 hollow balls, 5 light activated elements, 501 photoresistance, 502 positive electricity conductive filaments, 503 negative electricity conductive filaments, 6 light emitting diodes, 7 light cylinders, 8 time relays, 9 horizontal supporting plates, 901 spherical grooves, 10 annular horizontal outers, 11 supports, 12 brace rods, 13 conduction Internal Spherical Surface, 14 conduction pendulums, 15 spinning balls, 16 solar panels, 17 accumulators, 18 springs, 19 ball contacts, 20 insulation planchets, 21 bolt pairs, 22 grommet type sealss.
Embodiment
As shown in the figure, this inclination angle monitoring sensor, by support 11, be fixed on the hollow ball 4 on support 11, be fixed on the horizontal supporting plate 9 in hollow ball 4, be placed in the spinning ball 15 in the spherical groove 901 on horizontal supporting plate 9, be individually fixed on spinning ball 15, the light cylinder 7 of bottom and conduction pendulum 14, be located at the conduction Internal Spherical Surface 13 of hollow ball 4 lower semisphere, to be located in light cylinder 7 and to the light emitting diode 6 of light cylinder top window emission of light, be located at the ball contact 19 of conduction pendulum 14 lower end, be embedded in the insulation planchet 20 of the corresponding circle spherical contact 19 in conduction Internal Spherical Surface 13, light activated element 5 and the time relay 8 of being located at hollow ball 4 episphere inside surface form.Described hollow ball 4 is made up of the upper and lower hemisphere of split, described upper and lower hemisphere and support 11 edge are respectively equipped with annular horizontal outer 10 and utilize described annular horizontal outer 10 and the bolt pair 21 be evenly arranged on annular horizontal outer 10 to be connected and fixed, the surface of contact of the annular horizontal outer 10 of described upper and lower hemisphere is provided with grommet type seals 22, to ensure the leakproofness of hollow ball, prevent rainwater etc. from entering.Described horizontal supporting plate 9 is supported in conduction Internal Spherical Surface 13 top of described hollow ball 4 lower semisphere, and spherical groove 901 is located at the home position of horizontal supporting plate 9 and is fitted tightly with described spinning ball 15 sphere, and ensures to relatively rotate.Described support 11 is provided with many brace rods 12 matched with described hollow ball 4 lower semisphere outside surface.The center line of the centre of sphere of described spinning ball 15, described light cylinder 7, conduction pendulum 14 overlaps with the axis of the vertical direction of hollow ball 4, and in the present embodiment, the centre of sphere of described spinning ball 15 overlaps with the centre of sphere of hollow ball 4.
The described time relay 8, conduction pendulum 14, ball contact 19, conduction Internal Spherical Surface 13 and power supply form closed-loop path I, the described time relay 8, light emitting diode 6 and power supply form closed-loop path II, for ease of the time relay 8 respectively and light emitting diode 6 and conducting electricity between pendulum 14 connect up, be provided with in described spinning ball 15 and described light cylinder 7 and the cavity that pendulum 14 upper links chamber communicates that conducts electricity, the described time relay 8 is located in described cavity.Described conduction pendulum 14 lower end offers blind hole, ball contact 19 heads in blind hole by described insulation planchet 20, and being connected with spring 18 between described blind hole bottom surface and ball contact 19, when departing from ball contact 19 to make insulation planchet 20, ball contact 19 is ejected blind hole and to contact conducting closed-loop path with conduction Internal Spherical Surface 13 by spring 18.Described light activated element 5 utilizes data line 2 to launch transmitting device 1 with the data of hollow ball outside to be connected.Described light activated element 5 by being encapsulated in the photoresistance 501 of described hollow ball 4 episphere inside surface uniformly, many positive and negative electric conductive filaments 502,503 that from top to bottom uniform interval is laid in photoresistance 501 form, positive and negative electric conductive filament 502,503 described in each is guided the winding displacement 3 that is flush-mounted in hollow ball 4 outside surface into and is connected electrically, described winding displacement 3 output terminal is electrically connected described data line 2, transmits electric signal to launch transmitting device 1 to data.Described positive and negative electric conductive filament 502,503 is alternately inlaid on hollow ball 4 inwall, in order to indicate angle of inclination.In the present embodiment, adjacent positive and negative electric conductive filament 502,503, at a distance of 0.025cm, represents inclination 0.1 degree.
Described data are launched transmitting device 1 and are comprised CPU and the GPRS wireless communication module that is connected with CPU or cdma wireless communication module.Adopt GPRS wireless communication module in the present embodiment, i.e. SIM900A SMS module, this module supports mobile GSM, UNICOM GPRS signal; In SIM900A module, SIM card card slot can need according to user the SIM card using UNICOM or movement; In SIM900A module, antennal interface can use 800M-1100M antenna; SIM900A module is connected with CUP by serial ports (UART1), and when monitoring inclination fault, CUP order SMS module sends relevant information and notifies user.If have the place of GPRS communication network all can use, need not self-built, safeguard communication network, communication distance is unrestricted.Adopt solar powered mode in the present embodiment, described power supply is made up of solar panel 16, the accumulator 17 be connected with solar panel 16 and charging-discharging controller.When having sunlight, powered by solar panel 16 and accumulator 17 charged, accumulator 17 without power-on time under sunlight conditions more than 30 days, serviceable life is more than 5 years.
In the present embodiment, the diameter of spinning ball 15 is 10cm, and the diameter of hollow ball 4 is 30cm, the thickness of horizontal supporting plate 9 is 2cm, and light cylinder 7 top window diameter is 0.05cm, and the diameter of conduction pendulum 14 is 5cm, the diameter of ball contact 19 is 1cm, and the diameter of insulation planchet 20 is 0.5cm.
During use, a monitoring point shaft tower kind equipment installs 1 sensor, support 11 is fixed on shaft tower center line, overhead certain altitude, is positioned at shaft tower kind equipment 2/3 At The Height and shaft tower kind equipment top.
Claims (8)
1. an inclination angle monitoring sensor, it is characterized in that: by support, be fixed on the hollow ball on support, be fixed on the horizontal supporting plate in hollow ball, be placed in the spinning ball in the spherical groove on horizontal supporting plate, be individually fixed on spinning ball, the light cylinder of bottom and conduction pendulum, be located at the conduction Internal Spherical Surface of hollow ball lower semisphere, to be located in light cylinder and to the light emitting diode of light cylinder top window emission of light, be located at the ball contact of conduction pendulum lower end, be embedded in the insulation planchet of the corresponding circle spherical contact in conduction Internal Spherical Surface, be located at light activated element and the time relay composition of hollow ball episphere inside surface, the described time relay, conduction pendulum, ball contact, conduction Internal Spherical Surface and power supply form closed-loop path I, the described time relay, light emitting diode and power supply form closed-loop path II, the centre of sphere of described spinning ball, described light cylinder, the conduction center line of pendulum overlaps with the axis of the vertical direction of hollow ball.
2. inclination angle according to claim 1 monitoring sensor, is characterized in that: the centre of sphere of described spinning ball overlaps with the centre of sphere of hollow ball.
3. inclination angle according to claim 1 monitoring sensor, it is characterized in that: described hollow ball is made up of the upper and lower hemisphere of split, described upper and lower hemisphere and bracket lip are along being respectively equipped with annular horizontal outer and utilizing described annular horizontal outer and the bolt pair be evenly arranged on annular horizontal outer to be connected and fixed, and the surface of contact of the annular horizontal outer of described upper and lower hemisphere is provided with grommet type seals.
4. inclination angle according to claim 1 monitoring sensor, it is characterized in that: described horizontal supporting plate is supported in the conduction Internal Spherical Surface top of described hollow ball lower semisphere, described spherical groove is located at the home position of horizontal supporting plate and is fitted tightly with described spinning ball sphere.
5. inclination angle according to claim 1 monitoring sensor, it is characterized in that: be provided with in described spinning ball and described light cylinder and the cavity that pendulum upper links chamber communicates that conducts electricity, the described time relay is located in described cavity so that the time relay respectively and light emitting diode and conducting electricity between pendulum connect up.
6. inclination angle according to claim 1 monitoring sensor, it is characterized in that: described light activated element by being encapsulated in the photoresistance of described hollow ball episphere inside surface uniformly, many positive and negative electric conductive filaments that from top to bottom uniform interval is laid in photoresistance form, described positive and negative electric conductive filament is all guided the winding displacement of being located at hollow ball outside surface setting-in into and is connected electrically, and the data line that described winding displacement output terminal is used for launching with the data of hollow ball outside transmitting device is electrically connected.
7. inclination angle according to claim 1 monitoring sensor, is characterized in that: described support is provided with many brace rods matched with described hollow ball lower semisphere outside surface.
8. inclination angle according to claim 1 monitoring sensor, is characterized in that: described conduction pendulum lower end offers blind hole, and ball contact heads in blind hole by described insulation planchet, and is connected with spring between described blind hole bottom surface and ball contact.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410361606.8A CN104132646B (en) | 2014-07-28 | 2014-07-28 | Inclination angle monitoring sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410361606.8A CN104132646B (en) | 2014-07-28 | 2014-07-28 | Inclination angle monitoring sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104132646A CN104132646A (en) | 2014-11-05 |
CN104132646B true CN104132646B (en) | 2016-03-30 |
Family
ID=51805421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410361606.8A Active CN104132646B (en) | 2014-07-28 | 2014-07-28 | Inclination angle monitoring sensor |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104132646B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104406572A (en) * | 2014-12-23 | 2015-03-11 | 重庆花金王科技开发有限公司璧山分公司 | PSD (Position Sensitive Detector) position sensor and three-dimensional inclination sensor |
CN107065903B (en) * | 2015-07-03 | 2020-03-24 | 诸暨市枫桥天竺五金油漆店 | Level detection device |
CN108622804A (en) * | 2018-07-19 | 2018-10-09 | 上海海事大学 | Changing resistor type bridge crane panning angle measuring device |
CN113432636B (en) * | 2021-07-13 | 2023-03-14 | 南京华群能源集团有限公司 | Intelligent sensing early warning spherical terminal for deep foundation pit operation |
CN114753656B (en) * | 2022-06-06 | 2024-02-09 | 广厦建设集团有限责任公司 | Discharging platform for building construction |
CN114812507B (en) * | 2022-06-28 | 2022-09-09 | 济南鸿腾实业有限公司 | Spirit level for green building decoration |
CN116678382B (en) * | 2023-08-03 | 2023-10-03 | 四川交通职业技术学院 | Bridge safety detection device based on artificial intelligence |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD245045A1 (en) * | 1985-12-17 | 1987-04-22 | Zeiss Jena Veb Carl | ARRANGEMENT FOR DETERMINING TILT ANGLES |
JPH09170924A (en) * | 1995-12-20 | 1997-06-30 | Rohm Co Ltd | Inclination detection sensor |
CN101762267B (en) * | 2008-12-24 | 2011-12-28 | 亿光电子工业股份有限公司 | Tilting sensing device |
US8533964B1 (en) * | 2011-06-14 | 2013-09-17 | Thomas Junk | Vertical orientation indicator for use after an avalanche |
CN102661739B (en) * | 2012-05-15 | 2013-11-06 | 山东大学 | Photoelectric inclined angle sensor |
CN204085511U (en) * | 2014-07-28 | 2015-01-07 | 鞍钢集团矿业公司 | Inclination angle monitoring sensor |
-
2014
- 2014-07-28 CN CN201410361606.8A patent/CN104132646B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN104132646A (en) | 2014-11-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104132646B (en) | Inclination angle monitoring sensor | |
CN104132638B (en) | Device for monitoring inclination | |
CN204085511U (en) | Inclination angle monitoring sensor | |
CN204085499U (en) | Device for monitoring inclination | |
KR20170142587A (en) | Auto Report Guardrail | |
CN204833977U (en) | Solar power warning sign takes precautions against earthquakes | |
CN205508102U (en) | Sag monitoring device of power transmission circuit | |
CN207184156U (en) | A kind of transmission line online monitoring system | |
CN204362808U (en) | For the small animal deporting device of outdoor Capacitor banks | |
CN101931270A (en) | Method and system for protecting power transmission line | |
CN205247186U (en) | Warmhouse booth agricultural information ization service system | |
CN204944537U (en) | Drop-type arrester detection system | |
CN105825649A (en) | Monitoring device of electric transmission line sag | |
CN104848837A (en) | Pole tower inclination monitoring system and method thereof | |
CN203433124U (en) | Tumbler perception earthquake instrument | |
CN204101031U (en) | Device for monitoring inclination of transmission line tower | |
CN204644907U (en) | A kind of shock sensor alarm roadblock | |
KR101362734B1 (en) | Piezoelectric harvesting system | |
CN105519515A (en) | Bird repellent device for power lines | |
CN108732954A (en) | A kind of charging pile monitoring system and its working method | |
CN210321718U (en) | Tower gradient detection system | |
CN204788358U (en) | Shaft tower slope monitoring system | |
CN102494294A (en) | Designing method of solar LED (light emitting diode) street lamp with alarm function | |
CN207160715U (en) | A kind of mobile communication tower apparatus with high emission efficiency | |
CN108075560B (en) | Wireless communication device powered by solar intelligent brick |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee | ||
CP01 | Change in the name or title of a patent holder |
Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Anshan Iron & Steel Group Mining Co., Ltd. |