CN202707145U - Mining intrinsically safe speed sensor - Google Patents
Mining intrinsically safe speed sensor Download PDFInfo
- Publication number
- CN202707145U CN202707145U CN 201220093640 CN201220093640U CN202707145U CN 202707145 U CN202707145 U CN 202707145U CN 201220093640 CN201220093640 CN 201220093640 CN 201220093640 U CN201220093640 U CN 201220093640U CN 202707145 U CN202707145 U CN 202707145U
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- frequency signal
- speed sensor
- circuit board
- output circuit
- frequency
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Abstract
The utility model provides a mining intrinsically safe speed sensor which is characterized by mainly comprising a speed sensor (1) and a speed control part (2). The speed sensor (1) comprises a coded disc (3), a rolling wheel (4), a frequency output circuit board (5) and a wiring box (6). The frequency output circuit board (5) and the coded disc (3) are arranged in the rolling wheel (4). A frequency signal end output by the frequency output circuit board (5) is connected with a frequency signal receiving end of the wiring box (6) through a cable. The wiring box (6) connects frequency signals to a control circuit board of the speed control part (2) through the cable. The mining intrinsically safe speed sensor is compact in structure and simple to operate. For small space of a belt machine, only two keys are operated to input a protected speed value. The mining intrinsically safe speed sensor is good in electric safety and high in reliability, passes the national institution detection, and obtains an explosion-proof certification and a safety standard certification.
Description
Technical field
The utility model relates to the sensing device of colliery underground belt conveyor, specifically a kind of colliery underground survey conveyor speed and have the intelligent mining intrinsic safety type velocity sensor of conveyor fault detect and defencive function.
Background technology
In the energy industry of China, coal accounts for about 70% in China's primary energy production and consumption structure, expects the year two thousand fifty also will account for more than 50%.Therefore, coal will be the main energy sources of China within quite long period.Current, the rapid growth of China's economy is had higher requirement to Dissertation of Development of Coal Industry., must strengthen safety in production for this reason, guarantee that coal industry continues, stable, sound development.The coal mining of China 95% is underground job.Coal mining accident account for industrial and mining enterprises once the above serious accident of dead 10 people 72.8% to 89.6%(2002-2005); Once in the above accident of dead 10 people, gas accident accounts for 71% of death toll in coal mining enterprise.The serious disasters and accidents that the colliery faces are severes, and the loss that causes is extremely heavy.
Because coal mining accident is many, death toll is many, has caused 1,000,000 tons of death rates of China's coal-mine always high.Particularly taking place frequently of the great and especially big gas in colliery (coal dust) disaster accident not only caused the massive losses of national wealth and citizen's life, and had a strong impact on the international fame of China.
In fact, the generation of these gas accidents is not accidental, and it is in the past in-problem concentrated exposure in the coal production process, relates to many aspects.The deficiency of existing natural cause, input in science and technology and research also has human factor and national system, management, economic policy, the traditional concept of society, cultural quality of coal mining enterprise etc.
Summary of the invention
For the potential faults that solves the underground belt conveyor broken belt, skids, hypervelocity etc. causes; technical barrier to be solved in the utility model provides a kind of safe and reliable; mining intrinsic safety type velocity sensor easy to maintenance, as to measure belt speed, monitoring conveyor fault and conveyor be carried out real-time guard.
The purpose of this utility model is achieved through the following technical solutions:
A kind of mining intrinsic safety type velocity sensor, be installed on the lower belt of conveyor, it mainly divides 2 two parts to form by velocity sensor 1 and speed controlling portion, velocity sensor 1 is comprised of code-disc 3, roller 4, frequency output circuit plate 5 and junction box 6, frequency output circuit plate 5 and code-disc 3 place in the roller 4, the frequency signal end of the output of frequency output circuit plate 5 is connected to the frequency signal receiving terminal of junction box 6 by cable, junction box 6 usefulness cables are connected to speed controlling portion to frequency signal and divide on 2 the control circuit board.
Described speed controlling portion divides 2 control circuit board to be provided with the Philip single-chip microcomputer.
The hollow shaft 7 of passing roller 4 centers by cable is connected to the frequency signal end of the output of frequency output circuit plate 5 the frequency signal receiving terminal of junction box 6.
The circuit of mining intrinsic safety type velocity sensor of the present utility model has all adopted the intrinsically safe circuit design, and control program is independent development.
The beneficial effects of the utility model and advantage are:
1. mining intrinsic safety type velocity sensor compact conformation of the present utility model is easy and simple to handle.For the design of conveyor narrow space, the velocity amplitude that only has two key operations to input required protection gets final product.
2. mining intrinsic safety type velocity sensor electrical security of the present utility model is good, and reliability is high.Detect by national structure, the leader certification of conformity of an instrument for explosive atmosphere and peace standard card.
4. mining intrinsic safety type velocity sensor of the present utility model is easy to use, is convenient to the down-hole and safeguards.Only need support is fixed on the support of conveyor with the wirerope that carries, allow roller freely drop on the belt.The equipment sealing is good, the simple basic non-maintaining product that belongs to of mechanism.
Description of drawings
Fig. 1 is mining intrinsic safety type velocity sensor structure composition diagram.
Fig. 2 is the front view of code-disc in the roller.
Fig. 3 is the sectional drawing of code-disc in the roller.
Fig. 4 is the front view of roller.
Fig. 5 is the sectional drawing of roller.
Fig. 6 is the printed circuit board diagram of frequency output circuit plate.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
A kind of mining intrinsic safety type velocity sensor, be installed on the lower belt of conveyor, it mainly divides 2 two parts to form by velocity sensor 1 and speed controlling portion, velocity sensor 1 is comprised of code-disc 3, roller 4, frequency output circuit plate 5 and junction box 6, frequency output circuit plate 5 and code-disc 3 place in the roller 4, the frequency signal end of the output of frequency output circuit plate 5 is connected to the frequency signal receiving terminal of junction box 6 by cable, junction box 6 usefulness cables are connected to speed controlling portion to frequency signal and divide on 2 the control circuit board.The lower belt that is installed in conveyor is measured the belt speed of belt, detects the failure condition of belt and conveyor is carried out real-time guard, prevents dangerous situation.Because the essential safety characteristic of sensor can be used under the coal mine in the environment by methane and coal-dust explosion danger.
Speed controlling portion divides 2 control circuit board to be provided with the Philip single-chip microcomputer.
The hollow shaft 7 of passing roller 4 centers by cable is connected to the frequency signal end of the output of frequency output circuit plate 5 the frequency signal receiving terminal of junction box 6.
Velocity sensor and velocity transducer two parts.Its two parts are connected into one by a three-core cable.Velocity sensor by roller, code-disc, frequency output circuit plate, junction box, mounting bracket form, when roller rolling code disc rotation frequency output board all over the transformable frequency signal of output, the hollow shaft of frequency signal by the roller center is connected in the junction box on the support with cable.From the junction box cable frequency signal is connected on the control circuit board of transmitter again.There is control circuit to cooperate the single-chip microcomputer of Philip that the frequency signal that detects is processed on the control circuit board, makes it obtain the belt speed of belt and be presented on the charactron.Also can judge according to the variation of frequency signal the running status of belt; determine with this whether conveyor has fault; can realize by the control circuit that the self-contained relay of transmitter disconnects conveyor the protection of conveyor if any fault; can also send to central station of floating dock to the analog signals that speed develops into standard, make central station of floating dock possess the measuring ability of conveyor speed.
Claims (3)
1. mining intrinsic safety type velocity sensor, it is characterized in that it mainly divides (2) two parts to form by velocity sensor (1) and speed controlling portion, velocity sensor (1) is by code-disc (3), roller (4), frequency output circuit plate (5) and junction box (6) form, frequency output circuit plate (5) and code-disc (3) place in the roller (4), the frequency signal end of the output of frequency output circuit plate (5) is connected to the frequency signal receiving terminal of junction box (6) by cable, junction box (6) is connected to frequency signal on the control circuit board that speed controlling portion divides (2) with cable.
2. a kind of mining intrinsic safety type velocity sensor according to claim 1, it is characterized in that: described speed controlling portion divides the control circuit board of (2) to be provided with the Philip single-chip microcomputer.
3. a kind of mining intrinsic safety type velocity sensor according to claim 1 is characterized in that: the hollow shaft (7) of passing roller (4) center by cable is connected to the frequency signal end of the output of frequency output circuit plate (5) the frequency signal receiving terminal of junction box (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220093640 CN202707145U (en) | 2012-03-13 | 2012-03-13 | Mining intrinsically safe speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220093640 CN202707145U (en) | 2012-03-13 | 2012-03-13 | Mining intrinsically safe speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707145U true CN202707145U (en) | 2013-01-30 |
Family
ID=47587454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220093640 Expired - Fee Related CN202707145U (en) | 2012-03-13 | 2012-03-13 | Mining intrinsically safe speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927407A (en) * | 2017-03-29 | 2017-07-07 | 天奇自动化工程股份有限公司 | Lift state overspeed detection system |
-
2012
- 2012-03-13 CN CN 201220093640 patent/CN202707145U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927407A (en) * | 2017-03-29 | 2017-07-07 | 天奇自动化工程股份有限公司 | Lift state overspeed detection system |
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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: 20130130 Termination date: 20180313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |