CN103979283B - Belt conveyer for coal mine fender guard - Google Patents
Belt conveyer for coal mine fender guard Download PDFInfo
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- CN103979283B CN103979283B CN201410239705.9A CN201410239705A CN103979283B CN 103979283 B CN103979283 B CN 103979283B CN 201410239705 A CN201410239705 A CN 201410239705A CN 103979283 B CN103979283 B CN 103979283B
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Abstract
The invention belongs to conveyer fender guard technical field, be specifically related to belt conveyer for coal mine fender guard, comprise the mining intrinsic safety type programable controller of core and connected detecting signal unit, described detecting signal unit comprises sensor and hands free telephone, sensor comprises heap coal sensor, mine smoke sensor, speed detection sensor, mining temperature sensor, mining adhesive tape misalignment sensor and Mine-used I. S device for sensing longitudinal leakage, hands free telephone comprises Mine-used I. S and suddenly stops hands free telephone, Mine-used I. S stay cord is anxious stops hands free telephone A, Mine-used I. S stay cord is anxious stops hands free telephone B, the present invention has field-programmable, I/O is counted easily extensible, reliable operation, easy to operate, expand the features such as flexible, apparatus design is flexible, defencive function is complete, rich display information, reliably and easily can realize control interlocking and the defencive function of relevant device.
Description
Technical field
The invention belongs to conveyer fender guard technical field, be specifically related to belt conveyer for coal mine fender guard.
Background technology
The work under bad environment of belt conveyer for coal mine, complicated dangerous, the workflow waterline of whole equipment is huge, maintenance workload when breaking down is large, interlock adjustment is time-consuming takes a lot of work, need to carry out real-time monitoring to the state of whole equipment numerous operation parts, potential failure factor is reacted in time, what make each parts of equipment can coordinated operation normally, need special to be connected with large amount temperature to this, smog, the sensors such as sideslip, electromagnetic valve, the fender guard of the charged action equipment such as vac switch detects in real time it and protects, the normal operation of guarantee equipment, each sensor monitors each parts of conveyer in time when fault occurs, sensor sends signal to fender guard main frame by what monitor, main frame has more relevant process, send corresponding warning simultaneously, general its detection control mode of existing belt conveyer for coal mine fender guard is single, device entirety does not fixedly have easily extensible alerting ability, that interlocks is functional not strong, operation inconvenience, in use there is certain limitation.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned defect; there is provided there is field-programmable, easily extensible is counted in I/O, easy to operate, expand belt conveyer for coal mine fender guard flexibly; the present invention is applicable to the environment that underground coal mine has gas and coal dust explosion hazard; for the electrical control of Belt Conveyors Underground Coal Mine, monitoring and integrated protection; apparatus design is flexible, defencive function is complete, rich display information, reliably and easily can realize control interlocking and the defencive function of relevant device.
The technical scheme that the present invention adopts for its technical matters of solution is as follows:
Belt conveyer for coal mine fender guard, comprise the Operations Analysis of core and connected detecting signal unit, described motion control unit be automatically can control external device and unit control mining intrinsic safety type programable controller, mining intrinsic safety type programable controller gives this belt conveyer for coal mine fender guard with mine flameproof and intrinsic safety type power supply box and power connection and powers, described detecting signal unit comprises sensor and hands free telephone, sensor comprises heap coal sensor, mine smoke sensor, speed detection sensor, mining temperature sensor, mining adhesive tape misalignment sensor and Mine-used I. S device for sensing longitudinal leakage, hands free telephone comprises Mine-used I. S and suddenly stops hands free telephone, Mine-used I. S stay cord is anxious stops hands free telephone A, Mine-used I. S stay cord is anxious stops hands free telephone B, described mining intrinsic safety type programable controller port is laid with 8 core mine-shield communication cable main lines along conveyer, main line end arranges described Mine-used I. S stay cord and suddenly stops hands free telephone A in conveyer tail place, suddenly stop hands free telephone is arranged on corresponding conveyer head place on main line with connecting cable to described Mine-used I. S, described Mine-used I. S stay cord suddenly stops hands free telephone B and is then arranged on uniformly in main line with connecting cable, described Mine-used I. S stay cord anxious stopping also is provided with the anxious lock-switch of closing down of Mine-used I. S stay cord connected with connecting cable uniformly in main line corresponding before and after hands free telephone B, described mining adhesive tape misalignment sensor is connected with the anxious lock-switch of closing down of connecting cable and Mine-used I. S stay cord with Mine-used I. S device for sensing longitudinal leakage, the anxious main line stopped between hands free telephone and mining intrinsic safety type programable controller of described Mine-used I. S is also provided with Mine-used I. S I/O extender, described speed detection sensor, mining temperature sensor is connected with Mine-used I. S I/O extender with connecting cable, described heap coal sensor, mine smoke sensor is connected with mining intrinsic safety type programable controller with connecting cable, described main line tail end is also provided with mine explosion-suppression essential safe type change-box, described mine flameproof and intrinsic safety type power supply box is also connected with explosion-proof type magnetic valve for mine with connecting cable, described main line and each latch switch, connect with 8 core connectors between hands free telephone.
Described heap coal sensor is arranged in adhesive tape unloading place of conveyer head or head coal bunker, described mine smoke sensor is arranged on above conveyer main transmission drum, described speed detection sensor to be arranged on conveyer below belt, described mining temperature sensor is arranged on pyrotoxin 10-15mm place, the described mining adhesive tape misalignment sensor be connected with the anxious lock-switch of closing down of Mine-used I. S stay cord is two and is arranged on conveyer both sides, and respectively arranging a pair at head, tail, described Mine-used I. S device for sensing longitudinal leakage to be arranged on conveyer below belt.
Described mining intrinsic safety type programable controller establishes guidance panel, acoustic-optic alarm with chinese liquid crystal display device.
The invention has the beneficial effects as follows: adopt such scheme, the guidance panel of mining intrinsic safety type programable controller of the present invention can be programmed according to actual conditions, guidance panel is multiple functional, there is stronger flexible expansion, two kinds of modes of mining intrinsic safety type programable controller and automatic control mode and unit mode be combined with each other, two kinds of modes also can control by operating alone in conjunction with co-controlling, Mine-used I. S I/O extender is timely current control inputs mouth state, delivery port state sends mining intrinsic safety type programable controller to and controls corresponding output port after receiving mining intrinsic safety type programable controller order, each sensor detects belt conveyer working part everywhere in time, and by the information feed back that detects to mining intrinsic safety type programable controller, the control signal of reply is sent to ensure the normal safe work of conveyer entirety and each parts according to Detection Information by controller, and the acoustic-optic alarm of mining intrinsic safety type programable controller starts warning automatically when fault occurs, chinese liquid crystal display device is also by the position of display et out of order simultaneously, convenient maintenance in time, Mine-used I. S is anxious stops hands free telephone, Mine-used I. S stay cord is anxious stops hands free telephone A, Mine-used I. S stay cord suddenly stops hands free telephone B and the anxious people such as lock-switch that close down of Mine-used I. S stay cord not only can converse, get ready, also can on off control and anxious lock of closing down on the spot, the anxious lock of closing down of stay cord, the units such as interlocked control output control, multiple functional, easy to operate, each hands free telephone is connected with main line with 8 core connectors with latch switch, the convenient place of needs that is arranged on is so that control, possesses stronger alerting ability, each inter-module of fender guard coordinates performance function flexibly, and two kinds of modes deposit and make the present invention possess perfect control and protection function.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present invention will become apparent.
Fig. 1 is overall construction drawing of the present invention.
Fig. 2 is principle of the invention block diagram.
Detailed description of the invention
Belt conveyer for coal mine fender guard as shown in Figure 1, formed by mining intrinsic safety type programable controller 1 with the detecting signal unit that its port is connected with cable, mining intrinsic safety type programable controller 1 gives this belt conveyer for coal mine fender guard with mine flameproof and intrinsic safety type power supply box 2 and power connection and powers, input power is 127VAC, detecting signal unit comprises sensor and hands free telephone, sensor comprises the heap coal sensor 9 be arranged in adhesive tape unloading place of conveyer head or head coal bunker, be arranged on the mine smoke sensor 10 above conveyer main transmission drum, be arranged on the speed detection sensor 11 on conveyer below belt, be arranged on the mining temperature sensor 12 at pyrotoxin 10-15mm place, the mining adhesive tape misalignment sensor 14 being arranged on conveyer both sides and the Mine-used I. S device for sensing longitudinal leakage 15 be arranged on conveyer below belt, wherein mining adhesive tape misalignment sensor 14 is at head, tail respectively arranges a pair, hands free telephone comprises Mine-used I. S and suddenly stops hands free telephone 4, Mine-used I. S stay cord is anxious stops hands free telephone A7, Mine-used I. S stay cord is anxious stops hands free telephone B6, the port of mining intrinsic safety type programable controller 1 is provided with the 8 core mine-shield communication cable main lines 16 laid along conveyer, Mine-used I. S stay cord is anxious to stop hands free telephone A7 and can be arranged on conveyer tail place corresponding to main line end and have the anxious lock of closing down of stay cord, interlocked control exports, get ready, the functions such as speech, keep in communication while linking up again easily for the chain output to lower complete equipment, the anxious hands free telephone 4 that stops of Mine-used I. S is arranged on the place that on main line 16, corresponding conveyer head place or other needs control, there is on off control and anxious lock of closing down on the spot, call, the function such as to get ready, conveyor apparatus is controlled for facilitating long-range unit, Mine-used I. S stay cord suddenly stops hands free telephone B6 and is then arranged on uniformly in main line 16, suddenly stop hands free telephone B6 generally fills one every 200 meters to Mine-used I. S stay cord, during installation, user should according to the anxious mounting hole size of stopping hands free telephone B6 of Mine-used I. S stay cord, self-control adapter plate, the sidepiece of conveying frame is fixed on hook bolt, then by fixing on a mounting board for anxious for the Mine-used I. S stay cord hands free telephone B6 that stops, the anxious lock-switch 5 of closing down of Mine-used I. S stay cord is arranged on the anxious main line 16 stopping correspondence before and after hands free telephone B6 of Mine-used I. S stay cord uniformly, there is anxious lock and the anxious lock function of closing down of button of closing down of stay cord, generally be arranged in the frame of conveyer pedestrian side, using cable as stay cord, generally 75 to 100 meters are spaced apart between latch switch, during installation, user should according to the mounting hole size of this switch, self-control adapter plate, the sidepiece of conveying frame is fixed on hook bolt, then switch is fixed on a mounting board.Facilitate the urgent locking of control convenience, all anxious lock-switch 5 of closing down is connected with Mine-used I. S stay cord for mining adhesive tape misalignment sensor 14 and Mine-used I. S device for sensing longitudinal leakage 15, sensor by the information feed back that detects to mining intrinsic safety type programable controller 1, mining intrinsic safety type programable controller 1 realizes automatic control sending the anxious lock-switch 5 of closing down of signal control Mine-used I. S stay cord, the anxious main line 16 stopped between hands free telephone 4 and mining intrinsic safety type programable controller 1 of Mine-used I. S is also provided with Mine-used I. S I/O extender 3, speed detection sensor 11, mining temperature sensor 12 is also connected with Mine-used I. S I/O extender 3, like this can in time current control inputs mouth state, delivery port state sends mining intrinsic safety type programable controller 1 to and receives after mining intrinsic safety type programable controller 1 is ordered and controls corresponding output port, realize automatically controlling, heap coal sensor 9, mine smoke sensor 10 is connected with mining intrinsic safety type programable controller 1 again, the heap coal sensor 9 be arranged in adhesive tape unloading place of conveyer head or head coal bunker is generally hung and is unloaded into place at head adhesive tape, or in the coal bunker of head, normal coal stream movement can not percussion heap coal sensor 9, but when unloading point generation coal piling, the long-pending coal be detained should be able to touch heap coal sensor 9, make its run-off the straight, during installation, ringbolt subsidiary in available sensors is directly installed, also steel rope or chain suspension can be adopted, during for feed bin, preferably be arranged on the place that falling material does not directly clash into, or portion adds protective tube on a sensor, when sensor be installed near bulkhead local time, can action message when distance from bulkhead should ensure sensor perturbations, for making sensor also can action in less space, the length of suspended chain should be shortened as far as possible, the length of one section of rigidity part or shortening feeler lever is increased on top, the mine smoke sensor 10 be arranged on above conveyer main transmission drum is generally hung above main transmission drum, according to on-the-spot wind direction, to be advisable slightly by nearly lower air port, hanging place does not have serious trickle and dust.The speed detection sensor 11 be arranged on conveyer below belt is generally arranged on the below of belt, because belt start time heavy duty and underloading adhesive tape heave amplitude larger, in order to avoid the power wheel of sensor and adhesive tape depart from, should install as well near cylinder, to make speed transmission wheel heave amplitude unlikely excessive, or be close to reversing drum installation, angle and position to be adjusted during installation, during to ensure that adhesive tape is fully loaded and unloaded, in the scope allowing sideslip, sensor power wheel and adhesive tape close contact.Mining temperature sensor 12 is contained in pyrotoxin 10 to 15mm and locates, mine flameproof and intrinsic safety type power supply box 2 place is also provided with explosion-proof type magnetic valve for mine 13, itself and mining temperature sensor 12 UNICOM work, mining temperature sensor 12 detects bowl temperature and sends mining intrinsic safety type programable controller 1 to by frequency signal, and mining intrinsic safety type programable controller 1 judges Current Temperatures to control that watering explosion-proof type magnetic valve for mine 13 controls watering.The mining adhesive tape misalignment sensor 14 and the Mine-used I. S device for sensing longitudinal leakage 15 be arranged on conveyer below belt that are arranged on conveyer both sides are generally installed as suitable with close latch switch, necessarily notice during installation that erecting frame can affect travelling apron in no instance, in order to avoid scratch adhesive tape.Main 16 line tail ends are provided with mine explosion-suppression essential safe type change-box 8, power supply is provided to equipment such as distant acquisition sensors, main line 16 is all connected with 8 core connectors with between each latch switch, hands free telephone, easy to connect, mining intrinsic safety type programable controller 1 establishes guidance panel, acoustic-optic alarm with chinese liquid crystal display device, when an error occurs and alarm show position of fault over the display and be convenient to Quick overhaul.Mining intrinsic safety type programable controller 1 is the control core of this fender guard, it completes the equipment control and scheduling co-design of this fender guard and the display of various state, the control of mining intrinsic safety type programable controller 1 pair of external device is realized by the break-make of contact, i.e. digital output modul, output switch parameter is divided into intrinsic safety output switch parameter and Fei An output switch parameter, and the mode of mining intrinsic safety type programable controller 1 pair of external device divides two kinds: automatic control mode and unit mode, by feeding back to mining intrinsic safety type programable controller 1 with the timely monitor signal of upper sensor, control signal is spread out of control convenience to realize automatic control by mining intrinsic safety type programable controller 1 calculation process again, realize long-range unit by hands free telephone and latch switch to control.
This belt conveyer for coal mine fender guard model is KHP257, and wherein K is expressed as mining, and the meaning of H is protection, and P then represents belt, and 257 is registration sequence number, and the environment for use meeting this belt conveyer for coal mine fender guard is:
A) bar pressure: (86 ~ 106) kPa;
B) be applicable in underground coal mine-5 DEG C ~+40 DEG C environment;
C) surrounding air relative humidity is not more than 95% (when+25 DEG C)
D) environmental noise: be not more than 75dB (A);
E) without the occasion of significantly vibration and impact;
F) without the place destroying the aggressive fume insulated;
G) underground coal mine has the place of methane and coal-dust explosion;
H) without dripping or liquid intrusion.
The basic function of this belt conveyer for coal mine fender guard is:
Device can provide talk along the line with get ready communicate, contact function, to get ready and alarm voice sound level signal is not less than 90dB (A); Device can provide intrinsic safety, non-peace without the input and output of soruce contact type on-off model, and possesses the anxious lock function of closing down of stay cord; Device has early warning cycling start function, and early warning time length is not less than 10s, and shows each equipment state along the line; When there being fault to occur, device can provide warning, liquid crystal display fault and equipment state, and output signal sudden stop; Protection feature: speed protection; Coal piling is protected; Sideslip is protected; Overtemperature watering protection; Smog is protected; Tear protection; Two-way emergency stop switch; Its analog input error speed in frequency amount signal is input as: frequency input signal: 0Hz ~ 1000Hz (corresponding speed displayed value: 0m/s ~ 5m/s), pulse width is not less than 0.3ms, analog input transmission error is not more than 5.0% (F.S.), temperature frequency amount signal input frequency input signal: 200Hz ~ 1000Hz (corresponding temperature displayed value: 0 DEG C ~ 80 DEG C), pulse width is not less than 0.3ms, and analog input transmission error is not more than 2.5% (F.S.).
Its principle of work as shown in Figure 2; the work of fender guard is made up of processes such as signal detection, logic operation, control outputs, and the realization of these processes realizes automatically by mining intrinsic safety type programable controller 1 with the detecting signal unit that its port is connected with cable.
The signal detection process of this belt conveyer for coal mine fender guard is:
First signal is input to controller inside, controller is according to incoming signal and user program execution result, and master cock amount output signal, completes controlling functions, realizes start and stop on the spot and protection.On-off model has: anxious close down lock and start and stop on the spot.On-off model is the break-make by contact, enters the input port being configured to switching value of controller or intrinsic safety controller.During junction closure, internally send into a low level signal (" 0 " signal) by optocoupler; Whether when contact disconnects, internally send into a high level signal (" 1 " signal), state is sent to controller by intrinsic safety controller, is arranged according to high and low level signal and programming by controller, differentiate and have anxious lock of closing down to occur.
The installation of this belt conveyer for coal mine fender guard:
The concrete layout of fender guard equipment by user according to the situation; conventional layout and installation method: controller, intrinsic safety controller, change-box and electromagnetic starter etc. should be placed on the place that head electromechanical appliance is concentrated, and preferably have the control chamber that special.Controller should in strict accordance with the corresponding wiring of drawing with the wiring of each equipment room, and wiring should firmly not get loose, and do not have burr.Controller needs outside to provide 127VAC power supply.Driving surface signal along the line is all connected in controller by 8 core mine-shield communication cables, and connect between each latch switch with 8 core connectors to inserting, concrete wiring is with reference to accompanying drawing 1.
The corresponding model of parts of this belt conveyer for coal mine fender guard is: KXH16 mining intrinsic safety type programable controller, DXJ127/16 mine flameproof and intrinsic safety type power supply box, KTK16 (C) Mine-used I. S is anxious stops hands free telephone, KTK16 (B) Mine-used I. S stay cord is anxious stops hands free telephone, KTK16 (A) Mine-used I. S stay cord is anxious stops hands free telephone, the anxious lock-switch of closing down of KHJ16 Mine-used I. S stay cord, KJU16 Mine-used I. S I/O extender, GWD80 mining temperature sensor, GUJ19 heap coal sensor, GQL0.1 mine smoke sensor, KG5007A speed detection sensor, GEJ20 mining adhesive tape misalignment sensor, DFB-20/10 electromagnetic valve, GVY-2K Mine-used I. S longitudinal rupture of adhesive tape sensor.
The use method of operation of this belt conveyer for coal mine fender guard:
Automatic control: this is the using method that this fender guard is recommended, in this manner, controller participates in monitor and forecast, realizes perfect control and protection function.Concrete operations are as follows: enter main menu-operation-automatically; drive conveyer; by the start-stop knob on front panel by " stopping " rotation direction "ON" shelves; conveyer spoon bar must all at low level, and then start to start, as fender guard does not have fault; now conveyer starts to start automatically; if device has parking class fault, this Time Controller is reported to the police and is shown, conveyer fail to start.As in starting or in running, there is any one parking class fault, all will stop conveyer immediately, automatically show the fault occurred simultaneously and report to the police.Automatic starting process: first predict, conveyer spoon bar all should at low level simultaneously.After having predicted, Oil pump electrical machinery starts, after Oil pump electrical machinery starts, start No. 1 mair motor.As long as (conveyer spoon bar has one not at low level, just can not start mair motor) time delay (3 ~ 4) S, starts No. 2 mair motor; Survey No. 1 mair motor make and break contact return signal (junction closure) simultaneously.As contact does not close, then liquid crystal display " 1# electrical fault ", reports to the police and shuts down, as junction closure, then continuing.Time delay (3 ~ 4) S, survey 2# mair motor switch return signal, as contact does not close, then liquid crystal display " 2# electrical fault ", reports to the police and shuts down; As junction closure, then Loading Control is carried out to 1, No. 2 conveyer spoon bar, until conveyer spoon bar is to a high position simultaneously.After conveyer spoon bar a to high position, belt then normally runs by command speed.Above starting process by procedure auto-control, without the need to manual operation.7.1.2. normally stop conveyer: the start-stop knob on front panel " is stopped " shelves by "ON" rotation direction, perform parking order, now conveyer ramp to stop.Orderly shutdown process: first shut down tail feeder, time delay a period of time (time of run of material from belt machine end to head), after on belt, coal draws sky, each conveyer spoon bar is off-load (pushing away conveyer spoon bar to low level) simultaneously, until conveyer spoon bar is to low level; Then stop mair motor, docking process terminates.Above docking process by procedure auto-control, without the need to manual operation.Suddenly stop conveyer: each stage that this fender guard runs at conveyer, as when there is the parking class faults such as skidding, coal piling, sideslip, overtemperature watering, smog, locking or press " urgency is stopped " button, all will carry out sudden stop; In the anxious stopping time, while stopping mair motor, conveyer spoon bar pushed to low level always, control band-type brake.In adhesive tape starting and docking process, as conveyer spoon bar because of mechanical breakdown can not arrive a high position or low level time, controller is by automatic time delay process, delay time to and conveyer spoon bar does not still arrive position, conveyer spoon bar is then automatically stopped to control, and as the fault handling of parking class, to prevent the damage of conveyer spoon bar motor.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention namely openly in scope, still can do some and revise or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (3)
1. belt conveyer for coal mine fender guard, comprise the Operations Analysis of core and connected detecting signal unit, it is characterized in that: described Operations Analysis be automatically can control external device and unit control mining intrinsic safety type programable controller, mining intrinsic safety type programable controller gives this belt conveyer for coal mine fender guard with mine flameproof and intrinsic safety type power supply box and power connection and powers, described detecting signal unit comprises sensor and hands free telephone, sensor comprises heap coal sensor, mine smoke sensor, speed detection sensor, mining temperature sensor, mining adhesive tape misalignment sensor and Mine-used I. S device for sensing longitudinal leakage, hands free telephone comprises Mine-used I. S and suddenly stops hands free telephone, Mine-used I. S stay cord is anxious stops hands free telephone A, Mine-used I. S stay cord is anxious stops hands free telephone B, described mining intrinsic safety type programable controller port is laid with 8 core mine-shield communication cable main lines along conveyer, main line end arranges described Mine-used I. S stay cord and suddenly stops hands free telephone A in conveyer tail place, suddenly stop hands free telephone is arranged on corresponding conveyer head place on main line with connecting cable to described Mine-used I. S, described Mine-used I. S stay cord suddenly stops hands free telephone B and is then arranged on uniformly in main line with connecting cable, described Mine-used I. S stay cord anxious stopping also is provided with the anxious lock-switch of closing down of Mine-used I. S stay cord connected with connecting cable uniformly in main line corresponding before and after hands free telephone B, described mining adhesive tape misalignment sensor is connected with the anxious lock-switch of closing down of connecting cable and Mine-used I. S stay cord with Mine-used I. S device for sensing longitudinal leakage, the anxious main line stopped between hands free telephone and mining intrinsic safety type programable controller of described Mine-used I. S is also provided with Mine-used I. S I/O extender, described speed detection sensor, mining temperature sensor is connected with Mine-used I. S I/O extender with connecting cable, described heap coal sensor, mine smoke sensor is connected with mining intrinsic safety type programable controller with connecting cable, described main line tail end is also provided with mine explosion-suppression essential safe type change-box, described mine flameproof and intrinsic safety type power supply box is also connected with explosion-proof type magnetic valve for mine with connecting cable, described main line and each latch switch, connect with 8 core connectors between hands free telephone.
2. belt conveyer for coal mine fender guard according to claim 1, it is characterized in that: described heap coal sensor is arranged in adhesive tape unloading place of conveyer head or head coal bunker, described mine smoke sensor is arranged on above conveyer main transmission drum, described speed detection sensor to be arranged on conveyer below belt, described mining temperature sensor is arranged on pyrotoxin 10-15mm place, the described mining adhesive tape misalignment sensor be connected with the anxious lock-switch of closing down of Mine-used I. S stay cord is two and is arranged on conveyer both sides, and at head, tail respectively arranges a pair, described Mine-used I. S device for sensing longitudinal leakage to be arranged on conveyer below belt.
3. belt conveyer for coal mine fender guard according to claim 1, is characterized in that: described mining intrinsic safety type programable controller establishes guidance panel, acoustic-optic alarm with chinese liquid crystal display device.
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| CN104483881B (en) * | 2014-12-23 | 2017-07-18 | 天津通联电气有限公司 | Mine explosion-suppression and intrinsic safety type controller |
| CN106444512B (en) * | 2016-10-21 | 2023-09-01 | 北京和利时智能技术有限公司 | Mining intrinsic safety type programmable controller |
| CN106553878B (en) * | 2017-02-10 | 2019-04-12 | 山东开创电气有限公司 | A kind of querying method that mine leather belt protection system is latched along the line |
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| CN202687406U (en) * | 2012-06-22 | 2013-01-23 | 江苏道森机电科技有限公司 | Belt conveyor protector for coal mine |
| CN203959231U (en) * | 2014-05-30 | 2014-11-26 | 常州联力自动化科技有限公司 | Can expand belt conveyer for coal mine fender guard flexibly |
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| CN112607361B (en) * | 2020-12-18 | 2021-07-20 | 山东超晟光电科技有限公司 | Comprehensive protection system of optical fiber passive conveyor |
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