CN202304742U - Magnet ring fault protection displacement sensor for hydraulic support in coal mine - Google Patents
Magnet ring fault protection displacement sensor for hydraulic support in coal mine Download PDFInfo
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- CN202304742U CN202304742U CN2011204160938U CN201120416093U CN202304742U CN 202304742 U CN202304742 U CN 202304742U CN 2011204160938 U CN2011204160938 U CN 2011204160938U CN 201120416093 U CN201120416093 U CN 201120416093U CN 202304742 U CN202304742 U CN 202304742U
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Abstract
The utility model relates to a magnet ring fault protection displacement sensor for a hydraulic support in a coal mine, which comprises a sensor casing and a magnet ring connected with a passing cylinder piston. The magnet ring is in sliding fit with the sensor casing made of a stainless steel round tube, a signal detection circuit and a magnet ring fault protection circuit are arranged in the sensor casing and used for detecting displacement changes and outputting voltage signals, the signal detection circuit and the magnet ring fault protection circuit are fixed in a plastic tube in an embedment mode to form a circuit embedment piece, one end of the sensor casing is in threaded connection with an end terminal, the other end of the sensor casing is in threaded connection with a plug, the circuit embedment piece is located in the sensor casing, and a cable of the circuit embedment piece penetrates through the plug to externally stretch out of the sensor casing. The sensor can timely feed back fault information and guarantee regular work of an electric-hydraulic control system of the hydraulic support.
Description
Technical field
The utility model relates to a kind of displacement transducer, particularly a kind of magnet ring emergency protection displacement transducer of coal mine underground hydraulic support frame.
Background technology
Coal industry is the important basic industry of China, and rich coal resources in China in the period of quite growing future, is that main energy supply general layout can not change with the coal.Coal in China industry is the coal industry restructuring in the important development target in Eleventh Five-Year Plan period, implements large group's strategy, eliminates to fall behind production line, improves Coal Production technical equipment and mining mechanization degree.
According to this target call; Each coal equipment manufacturing enterprise must build highly efficient and productive, safe modernized mine technology; Building up a collection of is master's efficient, the safety of adopting, dig, transport, put forward electromechanical integration, intensification, modern production mine with production domesticization equipment, realizes comprehensive mechanical coal mining under the coal mine.Hydraulic support is the main equipment of comprehensive mechanical coal mining workplace; It can reliably and effectively support and control the coal-face top board; Isolate coal seam goaf; The borehole operation space that keeps safety, and the mechanization of realization coal face and relevant device thereof passing create conditions with safety in production for underground mining realization in colliery is highly efficient and productive.The programmed control function of hydraulic support is to make hydraulic support get crucial with relevant device coordinations such as coalcutter, scraper conveyers; And displacement transducer is the crucial checkout equipment of hydraulic support electrohydraulic control system; Utilize displacement transducer can detect the distance that push rod stretches out and withdraws, and then guarantee the pushing and sliding stroke of chute and the distance of trying to stop people from fighting each other of support to realize the robotization of fully-mechanized mining working production equipment; Improve working surface production efficient; Reduce operation easier, improve workplace and produce condition, reach the purpose of safety in production.In case but displacement transducer breaks down, the information that will cause the detection of displacement transducer to be transmitted is inaccurate, influences the electrohydraulic control system operate as normal of hydraulic support, for safety in production stays serious hidden danger.
The utility model content
The purpose of the utility model is the deficiency that exists to prior art, and a kind of magnet ring emergency protection displacement transducer of coal mine underground hydraulic support frame is provided.It can in time feed back failure message, guarantees the electrohydraulic control system operate as normal of hydraulic support.
The purpose of the utility model is achieved in that and comprises sensor outer housing and the magnet ring that is connected with the passing oil cylinder piston; This magnet ring and sensor outer housing are slidingly matched; Said sensor outer housing is a stainless pipe, is provided with signal deteching circuit in the sensor outer housing and the magnet ring fault secure circuit is used to detect change in displacement and output voltage signal, and said signal deteching circuit and magnet ring fault secure circuit are fixed on forming circuit embedding part in the plastic tube through embedding; The sensor outer housing threaded one end connects the termination; The other end plug that is threaded is positioned at circuit embedding part in the sensor outer housing, and the cable of circuit embedding part passes plug and stretches out sensor outer housing outward.
Said signal deteching circuit is N resistance and N the T type resistor network circuit that tongue tube rearranges.
N resistance equi-spaced apart series connection back of said T type resistor network circuit is connected N tongue tube equi-spaced apart arrangement, an end of each tongue tube and a corresponding resistance connection, the other end ground connection of each tongue tube with+5V voltage.
Said magnet ring fault secure circuit comprises voltage follow-up amplifier and resistance; The in-phase input end of said voltage follow-up amplifier connects the voltage output end of T type resistor network circuit through a resistance; And simultaneously through another resistance connection+5V voltage; The reverse input end of said voltage follow-up amplifier is connected with the output terminal of voltage follow-up amplifier, and the output terminal of voltage follow-up amplifier is through the 3rd resistance output voltage signal, the positive supply termination positive voltage of voltage follow-up amplifier; Negative power end ground connection, and warp the 4th resistance is connected with the ground wire of T type resistor network circuit.
Owing to adopted such scheme; Can the magnet ring interlocking be fixed on and pass on the oil cylinder piston; Sensor outer housing one end is inserted in the circular hole that the piston rod center is provided with fixing, makes sensor move the displacement movement of doing with respect to magnet ring along with piston rod, and the magnetic field of magnet ring exerts an influence to signal deteching circuit when moving; Signal deteching circuit is transferred to electrohydraulic control system with the displacement signal that detects through the magnet ring fault secure circuit, controls the action of hydraulic support thus.Because said signal deteching circuit and magnet ring fault secure circuit are fixed on forming circuit embedding part in the plastic tube through embedding, make displacement transducer can adapt to the bad working environments environment under the coal mine.
And because of said signal deteching circuit is N resistance and N the T type resistor network circuit that tongue tube rearranges; When sensor moves with respect to magnet ring; The magnetic field of magnet ring can make the tongue tube junction closure energising through the magnet ring position; The resistance value of signal deteching circuit changes, again through the change in displacement information of magnet ring fault secure circuit to the voltage signal transfer piston rod of electrohydraulic control system output 0.5～4.5V.In case during faults such as the generation magnet ring damages, magnet ring drops, magnet ring loss of excitation; The tongue tube contact can not closed be switched on; The magnet ring fault secure circuit is to electrohydraulic control system output 5.0V voltage signal; Thereby the electrohydraulic control system that makes hydraulic support draws the judgement that magnet ring breaks down, so that on-call maintenance.
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of the utility model displacement transducer;
Fig. 2 is the signal deteching circuit figure of the utility model;
Fig. 3 is the magnet ring fault secure circuit figure of the utility model.
In the accompanying drawing, 1 is the termination, and 2 is sensor outer housing, and 3 is magnet ring, and 4 is circuit embedding part, and 5 is plug, and 6 is cable.
Embodiment
Referring to Fig. 1-Fig. 3; A kind of embodiment of the magnet ring emergency protection displacement transducer of coal mine underground hydraulic support frame; Comprise sensor outer housing 2 and the magnet ring 3 that is connected with the passing oil cylinder piston; This magnet ring 3 is slidingly matched with sensor outer housing 2, makes sensor outer housing 2 under thrust, do the axial displacement campaign with respect to magnet ring 3.Said sensor outer housing 2 is a stainless pipe, is provided with signal deteching circuit in the sensor outer housing 2 and the magnet ring fault secure circuit is used to detect change in displacement and output voltage signal.Said signal deteching circuit is N resistance and N the T type resistor network circuit that tongue tube rearranges.Like resistance R 1, R2, R3, R4, R5, R6 ... Rn and tongue tube SW1, SW2, SW3, SW4, SW5, SW6 ... The T type resistor network circuit that SWn rearranges.Wherein, the quantity of resistance R 1～Rn and tongue tube SW1～SWn is confirmed according to the length of passing oil cylinder.N resistance equi-spaced apart of the said T type resistor network circuit back that is connected in series is connected with+5V voltage, and N tongue tube equi-spaced apart arranged, an end of each tongue tube and a corresponding resistance connection, the other end ground connection of each tongue tube.Said magnet ring fault secure circuit comprises voltage follow-up amplifier U1A and resistance; The in-phase input end of said voltage follow-up amplifier U1A connects the voltage output end of T type resistor network circuit through a resistance R 13; And simultaneously through another resistance R 12 connection+5V voltages; The reverse input end of said voltage follow-up amplifier U1A is connected with the output terminal of voltage follow-up amplifier U1A, and the output terminal of voltage follow-up amplifier U1A is through the 3rd resistance R 11 output voltage signals, the positive supply termination positive voltage of voltage follow-up amplifier U1A; Negative power end ground connection, and warp the 4th resistance R 14 is connected with the ground wire of T type resistor network circuit.Under the normal condition; According to the closed number of tongue tube; The resistance value of T type resistor network is different, and+5V voltage carries out dividing potential drop through T type resistor network and the 4th resistance R 14, makes RNET point output 0.5～4.5V voltage signal; Behind R13 and voltage follower U1A, make OUT point output 0.5～4.5V voltage signal.The RNET point voltage is 0 during magnet ring faults such as magnet ring damages when taking place, magnet ring drops, magnet ring loss of excitation, behind+5V voltage process R12 and the voltage follower U1A, makes OUT point output 5.0V voltage signal.Thereby make hydraulic support electrohydraulic control system judge the different displacements of push rod, and whether take place that magnet ring damages, magnet ring faults such as magnet ring drops, magnet ring loss of excitation according to OUT point different output voltage.Said signal deteching circuit and magnet ring fault secure circuit are fixed on forming circuit embedding part 4 in the plastic tube through embedding; Sensor outer housing 2 threaded one ends connect termination 1; The other end plug 5 that is threaded; Circuit embedding part 4 is positioned in the sensor outer housing 2, and the cable 6 of circuit embedding part 4 passes the plug 5 outer sensor outer housings 2 that stretch out.
The utility model utilizes displacement transducer can detect the distance that push rod stretches out and withdraws; Guarantee the pushing and sliding stroke of chute and the distance of trying to stop people from fighting each other of support; Realize the robotization of fully-mechanized mining working production equipment, improve working surface production efficient, reduce operation easier; Improve workplace and produce condition, reach the purpose of safety in production.
Claims (4)
1. the magnet ring emergency protection displacement transducer of a coal mine underground hydraulic support frame; Comprise sensor outer housing (2) and the magnet ring (3) that is connected with the passing oil cylinder piston; This magnet ring (3) is slidingly matched with sensor outer housing; It is characterized in that: said sensor outer housing (2) is a stainless pipe; Be provided with signal deteching circuit in the sensor outer housing (2) and the magnet ring fault secure circuit is used to detect change in displacement and output voltage signal; Said signal deteching circuit and magnet ring fault secure circuit are fixed on forming circuit embedding part (4) in the plastic tube through embedding, and sensor outer housing (2) threaded one end connects termination (1), the other end plug (5) that is threaded; Circuit embedding part (4) is positioned in the sensor outer housing (2), and the cable (6) of circuit embedding part (4) passes the outer sensor outer housing (2) that stretches out of plug (5).
2. the magnet ring emergency protection displacement transducer of coal mine underground hydraulic support frame according to claim 1, it is characterized in that: said signal deteching circuit is N resistance and N the T type resistor network circuit that tongue tube rearranges.
3. the magnet ring emergency protection displacement transducer of coal mine underground hydraulic support frame according to claim 2; It is characterized in that: N resistance equi-spaced apart series connection of said T type resistor network circuit connects with+5V voltage and is connected; N tongue tube equi-spaced apart arranged; The corresponding resistance connection of one end of each tongue tube with institute, the other end ground connection of each tongue tube.
4. the magnet ring emergency protection displacement transducer of coal mine underground hydraulic support frame according to claim 1; It is characterized in that: said magnet ring fault secure circuit comprises voltage follow-up amplifier (U1A) and resistance; The in-phase input end of said voltage follow-up amplifier (U1A) connects the voltage output end of T type resistor network circuit through a resistance (R13); And simultaneously through another resistance (R12) connection+5V voltage; The reverse input end of said voltage follow-up amplifier (U1A) is connected with the output terminal of voltage follow-up amplifier, and the output terminal of voltage follow-up amplifier (U1A) is through the 3rd resistance (R11) output voltage signal, the positive supply termination positive voltage of voltage follow-up amplifier (U1A); Negative power end ground connection, and warp the 4th resistance (R14) is connected with the ground wire of T type resistor network circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204160938U CN202304742U (en) | 2011-10-27 | 2011-10-27 | Magnet ring fault protection displacement sensor for hydraulic support in coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204160938U CN202304742U (en) | 2011-10-27 | 2011-10-27 | Magnet ring fault protection displacement sensor for hydraulic support in coal mine |
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| Publication Number | Publication Date |
|---|---|
| CN202304742U true CN202304742U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204160938U Expired - Fee Related CN202304742U (en) | 2011-10-27 | 2011-10-27 | Magnet ring fault protection displacement sensor for hydraulic support in coal mine |
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| CN (1) | CN202304742U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677466A (en) * | 2013-11-27 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Underwater robot compensator displacement detection sensor and detection method thereof |
| CN105737783A (en) * | 2015-12-15 | 2016-07-06 | 重庆梅安森科技股份有限公司 | Coal seam displacement settlement measuring device and system |
| CN106643451A (en) * | 2017-01-09 | 2017-05-10 | 首钢京唐钢铁联合有限责任公司 | Built-in magnetic ring detection device of pneumatic cylinder |
| CN109855519A (en) * | 2017-11-30 | 2019-06-07 | 中国科学院沈阳自动化研究所 | A kind of manned underwater vehicle non-contact compensation oil mass detection sensor device |
| CN109958670A (en) * | 2019-03-18 | 2019-07-02 | 科大方诚(杭州)智能科技有限公司 | A kind of novel servo oil cylinder |
| CN114353652A (en) * | 2021-12-06 | 2022-04-15 | 中国煤炭科工集团太原研究院有限公司 | Driving and anchoring all-in-one balladeur train displacement distance detection device |
-
2011
- 2011-10-27 CN CN2011204160938U patent/CN202304742U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677466A (en) * | 2013-11-27 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Underwater robot compensator displacement detection sensor and detection method thereof |
| CN105737783A (en) * | 2015-12-15 | 2016-07-06 | 重庆梅安森科技股份有限公司 | Coal seam displacement settlement measuring device and system |
| CN105737783B (en) * | 2015-12-15 | 2018-10-19 | 重庆梅安森科技股份有限公司 | A kind of measuring device and system of coal seam displacement sedimentation |
| CN106643451A (en) * | 2017-01-09 | 2017-05-10 | 首钢京唐钢铁联合有限责任公司 | Built-in magnetic ring detection device of pneumatic cylinder |
| CN109855519A (en) * | 2017-11-30 | 2019-06-07 | 中国科学院沈阳自动化研究所 | A kind of manned underwater vehicle non-contact compensation oil mass detection sensor device |
| CN109958670A (en) * | 2019-03-18 | 2019-07-02 | 科大方诚(杭州)智能科技有限公司 | A kind of novel servo oil cylinder |
| CN114353652A (en) * | 2021-12-06 | 2022-04-15 | 中国煤炭科工集团太原研究院有限公司 | Driving and anchoring all-in-one balladeur train displacement distance detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20151027 |
|
| EXPY | Termination of patent right or utility model |