CN103086293B - Mine winch safety system - Google Patents
Mine winch safety system Download PDFInfo
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- CN103086293B CN103086293B CN201110333250.3A CN201110333250A CN103086293B CN 103086293 B CN103086293 B CN 103086293B CN 201110333250 A CN201110333250 A CN 201110333250A CN 103086293 B CN103086293 B CN 103086293B
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- winch
- contactless
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- contactless switch
- programmable logic
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Abstract
The invention discloses a kind of mine winch safety system, this system comprises Programmable Logic Controller, shaft encoder, brake circuit and at least one synchrotransmitter; Brake circuit is made up of voltage transformer, bridge rectifier and the 3rd contactless switch, 3rd contactless coil connect after its auxiliary normal opened contact with control loop first contactless coil in parallel and the second contactless coil parallel connection connection transformer input end again, bridge rectifier input contact connection transformer mouth, bridge rectifier output contact, the 3rd contactless switch main contact and connection winch motor are connected successively; Shaft encoder and synchrotransmitter are connected Programmable Logic Controller input end respectively, and the 3rd contactless switch assists normal opened contact to connect Programmable Logic Controller mouth.When winch speed is greater than controller setting value, controller control contactor assists normal opened contact to close, and brake circuit work adds DC current to motor stator, reaches parking object, avoids winch to transfer rapidly due to out of control safety misadventures such as causing driving.
Description
Technical field
The present invention relates to a kind of mine winch, particularly relate to a kind of mine winch safety system.
Background technology
Mine small-sized dispatch winder (below 55KW) is used on inclined gallery, underground coal mine local, plays the work such as fortune for the transport of materials in shaft production, large part.Control loop as shown in Figure 1, usually connected and composed by the first contactless switch and the second contactless switch two AC electromagnetic contactor, wherein the first contactless coil 1 second contactless switch of connecting successively assists normally closed contact 32 and the first contactless switch to assist normal opened contact 21 to form the first branch road 10, second contactless coil 2, first contactless switch of connecting successively assists normally closed contact 31 and the second contactless switch to assist normal opened contact 22 to form the second branch road 20, three plase alternating current source switch 70 is connected after first branch road 10 is in parallel with the second branch road 20, three plase alternating current source switch 70 draws two contacts, first contactless switch main contact 11 and second contactless switch main contact 12 one end parallel connection go between with winch motor 60 and are connected, the other end obtains electric separation according to the first contactless coil 1 or the second contactless coil 2 and selects the contact conducting with three plase alternating current source switch 70, the first contactless switch can only be made to assist normal opened contact or the second contactless switch to assist normal opened contact to close by artificial actuation button in prior art, control winch motor 60 forward, reverse or stop spline to move, can only manually stop by push button control when unexpected landing rapidly appears in winch, reaction is slow, and there is potential safety hazard, nowadays, under the Safety of Coal Mine Production form of sternness, safety in production needs can not be met.
Summary of the invention
The invention provides a kind of mine winch safety system, in order to solve defect of the prior art, reduce the accident potential because gypsy winch brings, meet mine safety production needs, increase and promote safety factor.
The embodiment of the present invention provides a kind of mine winch safety system, comprises Programmable Logic Controller, for measuring shaft encoder, the brake circuit of winch drum revolution and at least one is for correcting the synchrotransmitter of described winch position; Described brake circuit is made up of voltage transformer, bridge rectifier and the 3rd contactless switch, and the wherein said coil of the 3rd contactless switch and the auxiliary normal opened contact of this contactless switch are connected circuit in parallel that the circuit that formed and the coil of described winch control loop first contactless switch and the coils from parallel connection of coils of described winch control loop second contactless switch formed being connected with the input end of described voltage transformer; The input contact of described bridge rectifier connects the mouth of described voltage transformer, and the output contact of described bridge rectifier, the main contact of described 3rd contactless switch, described winch motor are connected successively; Described shaft encoder and synchrotransmitter are connected the input end of described Programmable Logic Controller respectively, and the auxiliary normal opened contact of described 3rd contactless switch connects the mouth of described Programmable Logic Controller.
Mine winch safety system provided by the invention, Programmable Logic Controller can calculate the speed of winch by the diameter of shaft encoder and winch drum, when the speed of winch is greater than the setting value in Programmable Logic Controller, Programmable Logic Controller control contactless switch assists normal opened contact to close, contactless coil obtains electric, contactless switch main contact closes, brake circuit work adds DC current to motor stator, reach parking object by resistance braking, avoid winch to transfer rapidly due to out of control safety misadventures such as causing driving.
Accompanying drawing explanation
Fig. 1 is prior art control loop circuit diagram.
Fig. 2 is embodiment of the present invention using state reference view.
Fig. 3 is the circuit diagram that in the embodiment of the present invention, brake circuit is connected with control loop.
Reference numeral:
1-first contactless coil; 11-first contactless switch main contact; 10-first branch road;
2-second contactless coil; 12-second contactless switch main contact; 20-second branch road;
3-the 3rd contactless coil; 13-the 3rd contactless switch main contact; 30-the 3rd branch road;
4-bridge rectifier; Normal opened contact assisted by 21-first contactless switch; 40-the 4th branch road;
5-shaft encoder; Normal opened contact assisted by 22-second contactless switch; 50-the 5th branch road;
6-synchrotransmitter; Normal opened contact assisted by 23-the 3rd contactless switch; 60-motor;
7-Programmable Logic Controller; Normally closed contact assisted by 31-first contactless switch; 70-source switch;
8-winch; Normally closed contact assisted by 32-second contactless switch; 80-brake circuit;
9-cylinder; Normally closed contact assisted by 33-the 3rd contactless switch; 90-inclined gallery.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 2,3, the invention provides a kind of mine winch safety system, improve as shown in Figure 1 existing control loop, this system comprises Programmable Logic Controller 7, for measuring shaft encoder 5, the brake circuit 80 of winch 8 cylinder 9 revolution and at least one is for correcting the synchrotransmitter 6 of winch 8 position, in the present embodiment, synchrotransmitter 6 is two, is respectively used to be located at point station and lower point station on winch 8, as shown in Figure 1, control loop comprises the first contactless coil 1 and to connect successively the first branch road 10 that the second contactless switch assists normally closed contact 32 and the first contactless switch to assist normal opened contact 21 to be formed, second contactless coil 2 is connected the second branch road 20 that the first contactless switch assists normally closed contact 31 and the second contactless switch to assist normal opened contact 22 to be formed successively, source switch 70 (adopting three plase alternating current source switch here) is connected after first branch road 10 is in parallel with the second branch road 20, three plase alternating current source switch draws two contacts, first contactless switch main contact 11 and second contactless switch main contact 12 one end parallel connection go between with winch motor 60 and are connected, the other end obtains electric separation according to the first contactless coil 1 or the second contactless coil 2 and selects the contact conducting with three plase alternating current source switch, brake circuit 80 is made up of voltage transformer, bridge rectifier 4 and the 3rd contactless switch, wherein the 3rd contactless coil 3 the 3rd contactless switch of connecting assists normal opened contact 23 to form the 3rd branch road 30,3rd branch road 30 is connected with the input end of voltage transformer with after the 4th branch road 40 and the parallel connection of the 5th branch road 50, the mouth of the input contact connection transformer of bridge rectifier 4, output contact and the 3rd contactless switch main contact 13 of bridge rectifier 4 are connected in series winch 8 motor 60, shaft encoder 5 is connected the input end of Programmable Logic Controller 7 respectively with synchrotransmitter 6, and switch connects the mouth of Programmable Logic Controller 7, first contactless coil 1, first contactless switch of connecting assists normal opened contact 21, second contactless switch to assist normally closed contact 32 and the 3rd contactless switch to assist normally closed contact 33 to form the 4th branch road 40, second contactless coil 2, second contactless switch of connecting assists normal opened contact 22, first contactless switch to assist normally closed contact 31 and the 3rd contactless switch to assist normally closed contact 33 to form the 5th branch road 50, Programmable Logic Controller 7 inside is provided with warning circuit.
Because SIEMENS S 7-200 Programmable Logic Controller 7 (PLC) is long-tested in the industrial production, possess long playing stability and safety.So this small-sized dispatch winder Integrated Protection System have employed S7-200 type PLC as master controller, winch 8 speed, position and running state are monitored and shown; The abnormal state that winch 8 occurs is protected; To functions such as display such as the sound and light alarms occurred after protection.
Photo electric axis coder 5 is adopted to input PLC principle, run to PLC high-speed counter two paths of signals along with winch 8 by the shaft encoder 5 be arranged on winch 8 cylinder 9 (native system adopts 1000P) that (wherein a road is A, one tunnel is that B is used for distinguishing winch 8 rotating), undertaken calculating (by parameters such as cylinder 9 size, shaft encoder 5 type selectings) by PLC and draw the operating speed of winch 8.
Gypsy winch 8 raised position runs pulse count by the shaft encoder 5 be arranged on winch 8 cylinder 9 to input PLC, calculates through PLC.Carry out winch 8 location correction by being arranged on the synchrotransmitter 6 of point station under inclined gallery 90 upper point station suitable for reading and inclined gallery 90 end opening, or reach synchronous with winch 8 point station suitable for reading by long by reset button.
When gypsy winch 8 is let car fly away or caused winch 8 speed get out of hand for a certain reason, when winch 8 is transferred rapidly, because the PLC moment monitors winch 8 speed, when winch 8 speed is greater than setting value (general small-sized dispatch winder 8 is 2 meter per seconds), PLC controls the 3rd contactless switch and assists normal opened contact 23 to close, 3rd contactless coil 3 obtains electric, (two the 3rd contactless switchs assist normally closed contact 33 to disconnect simultaneously, 4th branch road 40 and the 5th branch road 50 disconnect, to ensure that the first contactless switch and the second contactless switch can not work with the 3rd contactless switch band electric control motor 60 simultaneously) transformer inputs obtains electric, 3rd contactless switch main contact 13 closes, rapid connection winch 8 brake circuit 80, voltage transformer mouth adds DC current to motor 60 stator through bridge rectifier 4, resistance braking is namely after electrical motor departs from three-phase alternating-current supply, stator winding adds a vdc, namely DC current is passed into, the effect of rotor inductive currents and stationary magnetic field is utilized to reach the object of braking.This fender guard have employed resistance braking exactly, and when gypsy winch 8 is overrun or let car fly away, Energy in use braking is stopped; Reach parking object by resistance braking, play and carry out resistance braking to winch 8 rapidly, protection is stopped, and warning of thundering.
By the synchrotransmitter 6 that point station on inclined gallery 90 and lower point station are installed, PLC can calculate and determine winch 8 actual position, and compare with point station on the inclined gallery 90 of setting and lower waypoint location, once be greater than setting value, demand working resistance braking loop 80 is carried out winch 8 and is braked and audible alarm.
Carry out calculating winch 8 actual position by PLC inside, if winch 8 there occurs to overrun in operational process let the fault such as car or pulleying fly away, PLC controls warning circuit conducting makes thumper carry out audible alarm.Notice service personnel handling failure.
In addition, can also by the software of PLC inside to the locking of sending dotter signal to improve winch 8 at the reliability promoted and in the process of below, sending dotter signal is inputted liftings by two interfaces of PLC and is transferred, after getting lifting ready, winch 8 cannot be transferred by software locking, can only promote; In like manner get ready and be lowered through software locking winch 8 and cannot promote driving, can only transfer.Winch 8 driving position control housing has the signal designation (by PLC output signal) got ready and promote and transfer, winch 8 driver drives according to the situation of getting ready.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (3)
1. a mine winch safety system, is characterized in that, comprises Programmable Logic Controller, for measuring shaft encoder, the brake circuit of winch drum revolution and at least one is for correcting the synchrotransmitter of described winch position; Described brake circuit is made up of voltage transformer, bridge rectifier and the 3rd contactless switch, wherein said 3rd contactless coil is connected with the auxiliary normal opened contact of described 3rd contactless switch formation first branch road, described first branch road first circuit parallel that formed in parallel with the first contactless coil in described winch control loop and described winch control loop second contactless coil is in parallel, is connected to the input end of described voltage transformer after described first branch road is in parallel with described first circuit parallel; The input contact of described bridge rectifier is connected with the mouth of described voltage transformer, and the output contact of described bridge rectifier, the main contact of described 3rd contactless switch, described winch motor are connected successively; Described shaft encoder and synchrotransmitter are connected the input end of described Programmable Logic Controller respectively, and the auxiliary normal opened contact of described 3rd contactless switch connects the mouth of described Programmable Logic Controller;
Described 3rd contactless switch comprises the first normally closed auxiliary contact and the second normally closed auxiliary contact; In described winch control loop, the first contactless coil is connected with described first normally closed auxiliary contact the circuit formed, and in described winch control loop, the second contactless coil is connected with described second normally closed auxiliary contact the circuit in parallel formed.
2. mine winch safety system according to claim 1, is characterized in that, described synchrotransmitter is two, is respectively used to be located at point station and lower point station on described winch.
3. mine winch safety system according to claim 1, is characterized in that, described Programmable Logic Controller inside is provided with warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110333250.3A CN103086293B (en) | 2011-10-28 | 2011-10-28 | Mine winch safety system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110333250.3A CN103086293B (en) | 2011-10-28 | 2011-10-28 | Mine winch safety system |
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| Publication Number | Publication Date |
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| CN103086293A CN103086293A (en) | 2013-05-08 |
| CN103086293B true CN103086293B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110333250.3A Active CN103086293B (en) | 2011-10-28 | 2011-10-28 | Mine winch safety system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108373119B (en) * | 2018-04-03 | 2020-07-21 | 淮北矿业股份有限公司 | Remote tripping protection device for dispatching winch |
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| CN201424354Y (en) * | 2008-10-23 | 2010-03-17 | 刘春林 | Intelligent crane double-brake electric hoist controller |
| CN101780929A (en) * | 2009-01-19 | 2010-07-21 | 抚顺永茂建筑机械有限公司 | Speed regulation and control system for lifting mechanism of tower crane |
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| CN103420295A (en) * | 2012-05-16 | 2013-12-04 | 江苏佳力起重机械制造有限公司 | Controller of electric chain hoist |
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| CN2048468U (en) * | 1989-05-29 | 1989-11-29 | 许登举 | Control cubicle for changing direction of mine winch |
| CN2201486Y (en) * | 1993-04-17 | 1995-06-21 | 西安矿业学院监测监控研究开发中心 | Mine slope well cart escaping-proof control mechanism |
| CN2303083Y (en) * | 1997-07-02 | 1999-01-06 | 西安矿业学院 | Intelligent inclined shaft transportation vehicle protection device |
| CN2651791Y (en) * | 2003-08-10 | 2004-10-27 | 中国矿业大学 | Passenger and conveyer linked controller in declined lane of coal mine |
| CN2690365Y (en) * | 2004-04-06 | 2005-04-06 | 康柏军 | Hoister positioning control circuit |
| CN201172608Y (en) * | 2008-03-19 | 2008-12-31 | 宝山钢铁股份有限公司 | Weight dropper type electricity breaking emergency hoisting control device |
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| CN201647894U (en) * | 2010-08-20 | 2010-11-24 | 河南中孚实业股份有限公司 | Hoist limit switch |
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| CN103086293A (en) | 2013-05-08 |
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