CN201942379U - Heavy duty descending monitoring system for friction type elevator of main shaft - Google Patents

Abstract

A heavy duty descending monitoring system for a friction type elevator of a main shaft is composed of the following three parts: a main shaft loading monitoring center, a main shaft unloading monitoring center and a main shaft lifting machine room monitoring center. The main shaft loading monitoring center comprises the following components: a S7-300 programmable controller, a control button of the measuring bucket, a sector door opening sensor of the measuring bucket, a sector door closing sensor of the measuring bucket, a weighing sensor of the measuring bucket, and a sector gate switching electromagnetic valve of the measuring bucket. The main shaft unloading monitoring center comprises the following components: an S7-300 programmable controller, a skip bucket in-place detection switch, a skip bucket overwinding detection switch, a coal position detection sensor in the skip bucket, and a plane gate switching detection electromagnetic valve of the skip bucket. The main shaft lifting machine room monitoring center comprises an S7-300 programmable controller, a communication interface and an execution circuit. The heavy duty descending monitoring system for a friction type elevator of a main shaft performs total stroke lifting moment monitoring and loading/unloading weight monitoring contrast for the elevator skip bucket that is loaded with a fixed weight, thereby ensuring enough lifting moment or braking moment at a state that the heavy duty skip bucket is unloaded totally and preventing the heavy duty descending accident of the elevator.

Description

Monitored control system is transferred in the anti-heavy duty of main shaft friction type winder

Technical field

The utility model belongs to the mine technical field of electricity, relate in the useful mineral products thing of the coal process of colliery main shaft friction type winder back production under promoting coal mine, avoid main shaft friction type winder skip bucket repetition loading, avoid in the main shaft friction type winder heavy duty lifting process discharge technique under the skip bucket heavy duty, relate in particular to the anti-heavy duty of a kind of main shaft friction type winder and transfer monitored control system.

Background technology

The utility model introduction is an example explanation background technology with bulkhgead gate skip bucket, interchange coiling electric motor serial-resistance speed-regulation, low-frequency power electric braking main shaft friction type winder.

Domestic and international big-and-middle-sized mine has all designed major-minor well elevator system, and the auxiliary shaft elevator system is used for promoting various materials, instrument, equipment, spoil and the operating personnel etc. that use under the coal mine, and main shaft is used for the useful mineral products of coal that winding shaft extraction next time comes.Friction type winder relies on the friction force between cylinder liner and the steel rope to come transferring power, because of its too small friction wheel and wirerope diameter, higher safety factor, the advantages such as equipment package of compactness have obtained widespread use in mine hoisting.

Friction type winder belongs to a formula rotating machinery, relies on two skip buckets to promote operation repeatedly up and down, realizes that the down-hole of coal is loaded and the ground unloading.Usually, at the main shaft loading equipment chamber concentrated coal bunker is set under the coal mine, all drivings, back production coal under the storage well, concentrate the interior coal of coal bunker to enter measure hopper and carry out the tonnage metering by feeder, adhesive tape conveyor, reach and set the skip hoisting of packing into behind the tonnage and unload, be transported to places such as coal preparation plant, harbour again by adhesive tape conveyor to ground.

Colliery main shaft friction type winder belongs to representative type position formula rotating machinery, has the potential risk of two aspects at present.The one, exist the skip bucket repetition loading to cause heavy duty to transfer accident." safety regulations in coal mine " the 382 regulation: the Maximum Loading Capacity and the maximum gross of bont are poor, should announce at well head, and no over-loading and the operation of the overload method of double differences, skip hoisting must be adopted and decide heavy cartridges.In the main shaft hooist present situation of colliery, when skip bucket is in " loaded " position, skip bucket is decided after heavy cartridges finishes, put in place if can not in time promote, bad or the skip bucket of detector switch contact produces when putting forward extraordinary circumstances such as being returned to " loaded " position after the displacement once more on small because skip bucket puts in place, loading adhesive tape conveyor can move once more, measure hopper is metered to bucket coal once more, metering reaches the measure hopper skip bucket repetition loading to having loaded once more of setting tonnage once more, causes skip bucket seriously to transship.In case gig send electricity to promote, heavily loaded skip bucket not only can not promote by forward, can oppositely glide on the contrary.If control ineffectively, heavily loaded skip bucket can slide to the main shaft shaft bottom down, gives the main shaft security improvement incidents that brings on a disaster; The 2nd, exist heavily loaded skip bucket the skip bucket heavy duty in lifting process, to occur and transfer accident.In the normal lifting process, skip bucket is after heavy cartridges is decided in the down-hole, and skip bucket can rise to aboveground unloading position place continuously, transfers to stowage position after the unloading that puts in place and loads once more, finishes a lifting process.In case in the heavily loaded skip hoisting process, gig because a variety of causes out of service after, be subjected to cause influences such as driver's error in judgement, maloperation, when gig heavily loaded skip bucket occurs and oppositely send electricity or do not bother to see me out phenomenons such as electricity condition declutches, the heavy duty skip bucket can oppositely glide rapidly, so that heavily loaded skip bucket occurs and crash into main shaft shaft bottom serious accident, to the main shaft hooist incidents that brings on a disaster.

Up to the present, coal and other industry main shaft friction type winder also do not prevent the technical standard of skip bucket repetition loading; Preventing that heavily loaded skip bucket from only having designed the direction of improvement memory circuit aspect transferring, just can not oppositely send electricity, this direction of improvement memory circuit, the personnel that are operated easily reset.Even if the direction memory circuit is effective, operating personal can declutch in the same old way, and heavily loaded skip bucket still can lean on coal deadweight in the skip bucket and causes that the skip bucket heavy duty transfers accident under the not charged state that declutches of gig; In the coal industry traditional design, in case propose the skip bucket pulleying on the gig, then opposite side is transferred the skip bucket that puts in place and then can not be loaded, and this also might cause heavily loaded skip bucket to transfer accident.Current, coal and other industry main shaft friction type winder still mainly rely on management to realize aspect preventing that heavily loaded skip bucket from transferring, and do not take the measure of essence in technical guarantee.

Summary of the invention

The utility model takes fundamental measure to overcome above mode deficiency in order thoroughly to solve above potential risk from technical guarantee, provides the anti-heavy duty of a kind of main shaft friction type winder to transfer monitored control system.The one, solved elevator-cup repetition loading technical barrier, avoided the elevator-cup overload, guaranteed that main hoist has enough friction moments to promote skip bucket; The 2nd, carry out total travel and promote moment monitoring and loading and unloading weight monitoring contrast deciding elevator-cup that heavy cartridges crosses, guarantee that heavily loaded skip bucket is not having under the situation of complete discharge, remain enough lifting moment or lock torque, and do not have heavily loaded skip bucket to quicken the chance that glides, the generation of having avoided the elevator-cup heavy duty to transfer accident.

For achieving the above object, the technical solution adopted in the utility model is:

Monitored control system is transferred in the anti-heavy duty of a kind of main shaft friction type winder, comprising: measure hopper control button, measure hopper fan-shaped gate leave sensor, the measure hopper fan-shaped gate closes sensor, measure hopper LOAD CELLS and measure hopper sector gate switch electromagnetic valve; The measure hopper fan-shaped gate opens sensor and measure hopper fan-shaped gate pass sensor is fixed on the measure hopper, the measure hopper LOAD CELLS be installed in measure hopper below, along with measure hopper content carbon amount what and send 4～20MA current signal, through S7-300 Programmable Logic Controller analog quantity load module, be for conversion into and the quantitative corresponding tonnage of bucket capacity carbon amount; It is characterized in that: the main shaft loading equipment monitoring and control centre comprises that S7-300 Programmable Logic Controller, measure hopper control button, measure hopper fan-shaped gate are opened sensor, the measure hopper fan-shaped gate closes sensor, measure hopper LOAD CELLS, measure hopper sector gate switch electromagnetic valve; The main shaft loading equipment monitoring and control centre finish two measure hopper sector gates manually, automatic switch control and prevent the control of skip bucket repetition loading, finish two measure hopper unit weight data, two measure hopper on off state data upload to main shaft hooist machine room control center; Main shaft unloading monitoring and control centre comprises S7-300 Programmable Logic Controller, skip bucket put in place coal position detecting sensor in detector switch, skip bucket pulleying detector switch, the skip bucket, skip bucket bulkhgead gate switch electromagnetic valve, and main shaft unloading monitoring and control centre is finished skip bucket put in place status data, pulleying status data, the inner coal bit data of the skip bucket that puts in place of back unloading, two skip buckets that put in place and is uploaded to main shaft hooist machine room monitoring and control centre; Main shaft hooist machine room monitoring and control centre comprises S7-300 Programmable Logic Controller, communication interface and executive circuit, main shaft hooist machine room monitoring and control centre receives the data that pass over from main shaft loading equipment control center, main shaft unloading monitoring and control centre, carry out logic analysis and judgement according to the data that receive, control main hoist plate disc brake opens and closes and motorrun state, prevents that heavily loaded skip bucket from transferring.

Monitored control system is transferred in anti-heavy duty according to described main shaft friction type winder, it is characterized in that: described main shaft loading equipment monitoring and control centre is finished and is prevented the control of skip bucket repetition loading, finishes two measure hopper unit weight data, two measure hopper on off state data upload to main shaft hooist machine room control center; The A skip bucket will load, and must be in to load the chamber pit shaft place that puts in place, and when mentioning unloading position on the B skip bucket, the A skip bucket just has been in the loading chamber pit shaft place that puts in place; System at first carries out initialization, whether detects control system excision sequence switch then at manual state, if at manual state, in case the A skip bucket has been in the loading chamber pit shaft place that puts in place, and control button presses, and then A measure hopper sector gate will be opened; If system is in auto state, in case the A skip bucket has been in the loading chamber pit shaft place that puts in place, system reads the tonnage of A measure hopper at this moment, if do not reach the setting tonnage, then A measure hopper sector gate can not be opened, and after the A measure hopper reached the setting tonnage, whether system detected to promote behind the A skip loading last time and put in place and the complete discharge signal, do not put in place or A skip hoisting does not have complete discharge after putting in place if promote behind the last time A skip loading, then A measure hopper sector gate can not be opened; Reach and set the tonnage signal when system detects the A measure hopper, and detect simultaneously promote behind A skip loading last time put in place and the complete discharge signal after, A measure hopper sector gate is opened automatically the A skip bucket is loaded; Put in place and the complete discharge signal by promoting behind detection A measure hopper sector gate switch, loaded weight signal and the A skip loading, utilize the programmable controller program instruction to the control carrying out of A measure hopper sector gate switch locking and release, after guaranteeing that A measure hopper sector gate was opened once, load that control center only receives that A skip hoisting puts in place and the signal of complete discharge after could secondary opening, avoided the generation of A skip bucket repetition loading phenomenon.

Monitored control system is transferred in anti-heavy duty according to described main shaft friction type winder, it is characterized in that: described main shaft hooist machine room monitoring and control centre mainly receives from main shaft loading equipment control center, data that main shaft unloading monitoring center passes over and read the hoist control system relevant data, carry out logic analysis and judgement according to the data that receive, carry out total travel and promote moment monitoring and loading and unloading weight monitoring contrast deciding elevator-cup that heavy cartridges crosses, guarantee that heavily loaded skip bucket is not having under the situation of complete discharge, remain enough lifting moment or lock torque, avoid the elevator-cup heavy duty to transfer the generation of accident; The winding houses monitoring and control centre at first carries out initialization, and after the A skip loading finished, the gig master controller was released, and this moment, the winding houses monitoring and control centre judged whether gig has applied predetermincd tension to heavily loaded skip bucket; If gig was not applied with heavily loaded skip bucket and put forward predetermincd tension this moment, no matter adjustable brake controller handle is in any position, and the voltage regulator is all exported 0 numerical value, and plate disc brake is to gig brake activation moment, the downslide phenomenon can not appear quickening in the heavy duty skip bucket, can only remain static; After the heavy duty skip bucket obtained putting forward predetermincd tension, if adjustable brake controller handle is released, the voltage regulator was exported the brake off signal, and plate disc brake is spacious lock under the highly pressurised liquid effect, and heavily loaded skip bucket is carried on quickening; The heavy duty skip bucket is carried in the process last, system can monitor gig and get electricity condition, in case the gig power down, heavily loaded skip bucket can run slowly, when in case heavily loaded skip bucket speed is reduced to 0.3M/S, no matter adjustable brake controller handle is in any position, and this moment, electro-hydraulic pressure regulator device was exported 0 numerical value, the plate disc brake band-type brake, to gig brake activation moment, gig is out of service, and heavily loaded skip bucket is in halted state, can not quicken to glide because of deadweight; In case gig provides the correct electric direction that gets, heavily loaded skip bucket obtains the upper lifting force square, quickens again to carry; When A skip hoisting when terminal point puts in place, system can detect the whether pulleying of heavily loaded skip bucket, if heavily loaded skip bucket does not have pulleying, the heavy duty skip bucket unloads, the winding houses monitoring and control centre can compare loading control center A skip loading tonnage data that pass over and the A dustpan unloading tonnage data that the unloading monitoring and control centre passes over simultaneously, in case carrying capacity is consistent with discharging quantity, the B skip bucket loads, gig enters B skip hoisting process, in case A skip loading amount and discharging quantity are inconsistent, then gig can not enter the next circulation that promotes, and must take the artificial measures to handle, and just can enter the next circulation that promotes then; The back pulleying if the A skip bucket puts in place, this moment, the A skip bucket can not unload, because B skip loading mouth has 2 meters left and right sides cushion spaces usually at measure hopper unloading mouth, was far longer than overwind clearance, therefore, the B skip bucket loads under the situation of A skip bucket pulleying, this moment gig friction roll two side draw balances, strength does not glide, on carry the B skip bucket, the A skip bucket is transferred to normally put in place, then the A skip bucket is continued unloading, and then enter the next circulation that promotes.

The beneficial effects of the utility model are: at the load port size of loading skip bucket, change the elevator-cup pulleying and can not carry out cargo-carring design, realized can carrying out loading pattern after the skip bucket pulleying, avoiding declutching after the heavily loaded skip bucket pulleying adjusting to the right place heavy duty occurs in the control process and transfers accident; Solve colliery main shaft friction type winder skip bucket repetition loading problem, stopped the elevator-cup overload, avoided the super staring torque of gig and the heavily loaded skip bucket downslide phenomenon that occurs, also saved coal resources simultaneously; Realized in the main shaft friction type winder lifting process of colliery, carry out total travel and promote moment monitoring and loading and unloading weight monitoring contrast deciding elevator-cup that heavy cartridges crosses, guarantee that heavily loaded skip bucket is not having under the situation of complete discharge, remain enough lifting moment or lock torque, and do not have heavily loaded skip bucket to quicken the chance that glides, the generation of having avoided the elevator-cup heavy duty to transfer accident has ensured the mine hoist safety operation.

The utility model both can be applicable to skip bucket bulkhgead gate unloading manner, also can be applicable to skip bucket curve trail load mode; Both can be applicable to colliery main shaft friction type winder control system, also can be applicable in the other industry friction position formula hoister control system that metal mine etc. promotes repeatedly; Both can be applicable to the DC speed regulation gig, also can be applicable to the AC speed regulating gig.The utility model has realized that colliery main shaft friction type winder skip bucket heavy duty transfers the monitoring of technical barrier.

Description of drawings

Fig. 1 is a main shaft hooist system diagram of the present utility model.

Fig. 2 is control structure figure of the present utility model.

Fig. 3 is the anti-repetition loading monitoring of a loading chamber of the present utility model diagram of circuit.

Fig. 4 is that the monitoring diagram of circuit is transferred in anti-heavy duty of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

The utility model is achieved through the following technical solutions:

Monitored control system is transferred in the anti-heavy duty of main shaft friction type winder of the present utility model, mainly is made up of main shaft loading equipment monitoring and control centre, main shaft unloading monitoring and control centre, main shaft hooist machine room monitoring and control centre three parts.

Main shaft loading equipment monitoring and control centre of the present utility model is mainly opened sensor, measure hopper fan-shaped gate pass sensor, measure hopper LOAD CELLS, measure hopper sector gate switch electromagnetic valve etc. by S7-300 Programmable Logic Controller, measure hopper control button, measure hopper fan-shaped gate and is formed.The main shaft loading equipment monitoring and control centre mainly finish two measure hopper sector gates manually, automatic switch control and anti-skip bucket repetition loading function, finish two measure hopper unit weight data, two measure hopper on off state data upload to main shaft hooist machine room control center function.

Main shaft of the present utility model unloading monitoring and control centre mainly is made up of put in place coal position detecting sensor in detector switch, skip bucket pulleying detector switch, the skip bucket, skip bucket bulkhgead gate switch electromagnetic valve etc. of S7-300 Programmable Logic Controller, skip bucket.Main shaft unloading monitoring and control centre is mainly finished skip bucket put in place status data, pulleying status data, the inner coal bit data of the skip bucket that puts in place of back unloading, two skip buckets that put in place and is uploaded to main shaft hooist machine room monitoring and control centre function.

Main shaft hooist machine room monitoring and control centre of the present utility model mainly is made up of S7-300 Programmable Logic Controller, communication interface and executive circuit.Main shaft hooist machine room monitoring and control centre mainly receives data that pass over from main shaft loading equipment control center, main shaft unloading monitoring center and the hoist control system relevant data that reads, carry out logic analysis and judgement according to the data that receive, the control Winder Disk Brake opens and closes and motorrun state, realization prevents heavily loaded skip bucket lowering function, guarantees that heavily loaded skip bucket has only complete discharge to finish and just can transfer operation afterwards.

Fig. 1 is a main shaft hooist system diagram of the present utility model, and in Fig. 1,1 is colliery main shaft loading equipment chamber, is the passage of concentrating coal bunker and main shaft hooist system under the contact coal mine, is used for installing electromechanical appliances such as adhesive tape conveyor, feeder, measure hopper; 2,3 is the concentrated coal bunker that stores coal under the coal mine, by feeder coal is transferred to and is loaded on the adhesive tape conveyor; 4 is colliery main shaft loading equipment chamber adhesive tape conveyor, and two adhesive tape conveyors generally are installed, and some mine is installed an adhesive tape conveyor, utilizes turnover panel to realize the coal supply of two measure hoppers.The utility model example is 2 adhesive tape conveyors; 5 is colliery main shaft loading equipment chamber measure hopper, is used for measuring skip bucket lifting capacity once, sends signal after reaching skip hoisting weight, stops the adhesive tape conveyor operation, and measure hopper is equipped with two, and sector gate is installed, and opens the back to the skip bucket dress carbon that puts in place; 6 is the measure hopper LOAD CELLS, install one below every measure hopper, along with measure hopper content carbon amount what and send 4～20MA current signal, through S7-300 Programmable Logic Controller analog quantity load module, be for conversion into and the quantitative corresponding tonnage of bucket capacity carbon amount; 7 open sensor for the measure hopper fan-shaped gate, and sensor is fixed on the measure hopper, on the measure hopper sector gate magnetic patch is installed, and after sector gate was opened, magnetic patch was near opening sensor, sensor junction closure; 8 for the measure hopper fan-shaped gate closes sensor, and sensor is fixed on the measure hopper, on the measure hopper sector gate magnetic patch is installed, and after sector gate was closed, magnetic patch was near opening sensor, sensor junction closure; 9 is the measure hopper sector gate, and sector gate is realized opening and closing by the pneumatic cylinder that is installed on the measure hopper, and pneumatic cylinder is controlled by the electromagnetic valve that loads control center.Sector gate is opened, the coal skip bucket of packing in the measure hopper, and sector gate is closed, sealing measure hopper lower port.Inlay two magnetic patch on the sector gate, be used for controlling sector gate switch sensor connection point on-off; 10 is the " loaded " position skip bucket, utilizes channel-section steel to make framework, and the external application steel plate forms a constant volume, is used for loading useful mineral products.After skip bucket is transferred to " loaded " position, accept coal in the measure hopper, by the rope hoisting that overlaps on the gig to ground; 11 is main shaft and ground bonded assembly ground level; 12 for being installed on the concentrated coal bunker of main shaft well head, is used for accepting the coal behind the dustpan unloading, by the ground adhesive tape conveyor with Coal Transport to places such as coal preparation plant, harbours; 13 is skip bucket pulleying sensor, is installed in above 0.5 meter, normal position.When hoisting speed control improper, when skip bucket surpasses normal unloading position 0.5 meter the time, pulleying sensor junction closure; 14 is the dustpan unloading quantity sensor, when skip hoisting when putting in place, sensor captures the inner original coal of skip bucket position, after skip bucket puts in place, sensor is caught the inner last coal position of skip bucket once more No. one time, the difference of two dant positions is transformed to 4～20MA current signal, inputs to the S7-300 analog quantity load module of unloading monitoring center, is for conversion into and the corresponding tonnage of dustpan unloading; 15 is main shaft well head derrick, generally makes of heavy section steel, is used for to operation skip bucket guiding; 16 is the unloading position skip bucket, utilizes channel-section steel to make framework, and the external application steel plate forms a constant volume, is used for loading useful mineral products.Skip hoisting is concentrated coal bunker with coal-discharging in the skip bucket to well head after unloading position; 17 for being mounted to magnetic patch above the skip bucket, is used for controlling that skip bucket puts in place, pulleying make and break contact break-make; 18 is plate disc brake, support is fixed on the winding houses floor, rely on highly pressurised liquid to keep certain interval, the running of realization gig, after plate disc brake internal high pressure liquid reduces to 0, plate disc brake is embraced the fixing brake disc in elevator drum top, gives elevation scheme Moving plate brake activation moment; 19 is the gig friction roll, takes above the cylinder and covers steel rope, and the steel rope two ends are connected with skip bucket, and the friction-type between steel rope dependence and the cylinder drives the operation repeatedly up and down of two skip buckets; 20 is brake disc, and brake disc is a ring steel plate, is fixed on the cylinder, relies on the plate disc brake applied pressure, produces lock torque; 21 for skip bucket to level sensor, when mentioning on the skip bucket, coal-discharging is clean in the skip bucket, also is that an other side skip bucket is transferred the signal that puts in place simultaneously.

In the main shaft friction type winder operational process of colliery, the gig motor via reducer drags cylinder rotation, takes the steel rope that overlays on the cylinder and drives the motion repeatedly up and down of two skip buckets, mention the position on the skip bucket after, an other side skip bucket is then transferred and is put in place.Load two travelling aprons of chamber coal is transported to respectively in two measure hoppers, the corresponding skip bucket of measure hopper.Measure hopper is set certain tonnage according to skip hoisting weight, after coal weight reaches and sets tonnage in the measure hopper, corresponding adhesive tape conveyor is out of service, after the corresponding skip bucket of measure hopper is transferred and is put in place, the measure hopper sector gate is opened, the coal skip bucket of packing in the measure hopper, load finish after, the measure hopper sector gate is closed.After " loaded " position was left in skip hoisting, corresponding adhesive tape conveyor restarted, and coal is transported in the measure hopper, reach set tonnage after adhesive tape conveyor stop once more.Rise to unloading position behind the skip loading, after putting in place, skip bucket body gate is installed in the pneumatic cylinder pull-up in the derrick outside, unloading after finishing skip bucket and putting in place is transferred to loading then and is loaded again, the another one skip bucket back unloading that realizes putting in place simultaneously, the main shaft hooist process is finished in circulation repeatedly.

Fig. 2 is control structure figure of the present utility model, and in Fig. 2,22 for loading monitoring and control centre S7-300 Programmable Logic Controller, has power supply, microprocessor, digital output, input and analog input module to constitute, and is used for finishing loading control and relevant data and uploads; 23 for unloading monitoring and control centre S7-300 Programmable Logic Controller, has power supply, microprocessor, digital output, input and analog input module to constitute, and is used for finishing unloading data computation and relevant data and uploads; 24 is main shaft hooist machine room monitoring and control centre S7-300 Programmable Logic Controller, there are power supply, microprocessor, digital input, output and analog quantity input, output module to constitute, carry out logic analysis and judgement according to the data that receive, control main hoist plate disc brake and motorrun state prevent that heavily loaded skip bucket from transferring; 25 is the Hydraulic Station electro-hydraulic pressure regulator device, and output 0～10V voltage is regulated Hydraulic Station pressure size, adjusts braking torque for mine hoist base and changes between 0～maximum; 26 for gig promotes A skip bucket high voltage connector, behind the A skip loading, and this contactless switch adhesive, gig promotes the A skip bucket and arrives deceleration point; 27 are that gig promotes A skip bucket low frequency contactless switch, and the A skip bucket closes on needs lower-speed state when putting in place, and this contactless switch adhesive guarantees that gig promotes the unloading that puts in place of A skip bucket low speed; 28 for gig promotes B skip bucket high voltage connector, behind the B skip loading, and this contactless switch adhesive, gig promotes the B skip bucket and arrives deceleration point; 29 are that gig promotes B skip bucket low frequency contactless switch, and the B skip bucket closes on needs lower-speed state when putting in place, and this contactless switch adhesive guarantees that gig promotes the unloading that puts in place of B skip bucket low speed; 30 are the A skip bucket coal position changing value sensor in the skip bucket of back that puts in place, and two current signals of output height are sent into unloading monitoring and control centre S7-300 analog quantity load module, and two difference between currents are scaled unloading coal position; 31 are the B skip bucket coal position changing value sensor in the skip bucket of back that puts in place, and two current signals of output height are sent into unloading monitoring and control centre S7-300 analog quantity load module, and two difference between currents are scaled unloading coal position; 32 is A skip bucket pulleying signal, and after the A skip bucket exceeded 0.5 meter of the position of normally putting in place, this switch motion inputed to unloading monitoring and control centre S7-300 digital quantity input module; 33 for the A skip bucket signal that puts in place, and after the A skip bucket normally put in place, this switch motion inputed to unloading S7-300 digital quantity input module; 34 is B skip bucket pulleying signal, and after the B skip bucket exceeded 0.5 meter of the position of normally putting in place, this switch motion inputed to unloading monitoring and control centre S7-300 digital quantity input module; 35 for the B skip bucket signal that puts in place, and after the B skip bucket normally put in place, this switch motion inputed to unloading S7-300 digital quantity input module; 36 is A measure hopper carrying capacity signal, when measure hopper is empty, and current signal of sensor output, this moment, current signal was thought 0 tonnage, after measure hopper was packed fixed heavy coal into, current signal of sensor output this moment, this current signal were thought fixed heavy full signal.Sensor current signal inputs to loads S7-300 analog quantity load module, is scaled measure hopper and loads the tonnage signal; 37 is B measure hopper carrying capacity signal, when measure hopper is empty, and current signal of sensor output, this moment, current signal was thought 0 tonnage, after measure hopper was packed fixed heavy coal into, current signal of sensor output this moment, this current signal were thought fixed heavy full signal.Sensor current signal inputs to loads S7-300 analog quantity load module, is scaled measure hopper and loads the tonnage signal; 38 is A measure hopper sector gate opening signal, inputs to load monitoring and control centre S7-300 digital input module; 39 is A measure hopper sector gate closing signal, inputs to load monitoring and control centre S7-300 digital input module; 40 open button for the A measure hopper, realize manual control measure hopper sector gate in particular cases; 41 is B measure hopper sector gate opening signal, inputs to load monitoring and control centre S7-300 digital input module; 42 is B measure hopper sector gate closing signal, inputs to load monitoring and control centre S7-300 digital input module; 43 open button for the B measure hopper, realize manual control measure hopper sector gate in particular cases; 44 open the solenoid control switch for A measure hopper sector gate, this switch motion, and electromagnetic valve gets electric, and A measure hopper sector gate is opened; 45 open the solenoid control switch for B measure hopper sector gate, this switch motion, and electromagnetic valve gets electric, and B measure hopper sector gate is opened; 46 for the excision sequence switch, when this switch connection, loads and prevent that the repetition loading control relation lost efficacy, and the excision sequence switch is to use under the special status, and normal condition excision sequence switch down is arranged in the special-purpose joint box, forbids to operate; 47 is A skip bucket bulkhgead gate control electromagnetic valve, and after skip bucket put in place, the solenoid control cylinder drew back skip bucket body gate, emits coal in the skip bucket; 48 is B skip bucket bulkhgead gate control electromagnetic valve, and after skip bucket put in place, the solenoid control cylinder drew back skip bucket body gate, emits coal in the skip bucket.

In the utility model, system is made up of main shaft loading equipment monitoring and control centre, main shaft unloading monitoring and control centre, main shaft hooist machine room monitoring and control centre three parts, three control centers are core component with the S7-300 Programmable Logic Controller all, the Programmable Logic Controller of three S7-300 Programmable Logic Controllers and main hoist electric-control system is formed the MPI bus-network, finish the communication of loading, unloading, garage control center and electric-control system relevant data, realized all states and data sharing.In the utility model, the used data of part read the electric-control system relevant data by the MPI communication, and therefore, relevant sensing, control device data are taken from electric-control system by communication.The MPI interface is the programming port that carries on the S7-300CPU, utilizes the MPI bus, under the situation less demanding at communication speed, that the communication data amount is little, can solve communication need fully.S7-300PLC adopts the communication modes that does not need configuration in the system, promptly realizes the MPI communication by calling the SFC function.S7-300CPU calls the SFC communication and divides intercommunication and one-way communication.In the utility model, adopt the one-way communication mode.

Fig. 3 is that loading chamber of the present utility model prevents skip bucket repetition loading monitoring diagram of circuit, in the main shaft hooist control flow of colliery, load chamber two adhesive tape conveyors are installed, two adhesive tape conveyors concentrate the down-hole the useful mineral products thing of coal bunker to be transported in the measure hopper, after measure hopper reached skip bucket permission setting tonnage, adhesive tape conveyor was out of service automatically.After skip bucket was transferred to " loaded " position, the measure hopper sector gate was opened, and coal is loaded in the skip bucket, and after the fully loaded skip bucket left " loaded " position, adhesive tape conveyor was opened once more, till measure hopper reaches the setting tonnage.Fully loaded skip hoisting is after unloading position, and the skip bucket bulkhgead gate is opened, and useful mineral products thing is unloaded in the well head coal bunker in the skip bucket.For the skip bucket that adopts curve trail load, the interior mineral products thing of skip bucket unloaded automatically after skip bucket put in place, did not need outside discharging gear.

In the main shaft hooist control flow of colliery, bad if Load System is controlled, skip bucket repetition loading phenomenon can appear, this situation serious threat main shaft hooist safety.When skip bucket is in " loaded " position, skip bucket is decided after heavy cartridges finishes, if can not in time promote, when putting extraordinary circumstances such as the detector switch contact is bad, skip bucket generation micro-displacement is returned to " loaded " position once more in place owing to skip bucket, loading adhesive tape conveyor can move once more, measure hopper is metered to bucket coal once more, once more metering reach the measure hopper of setting tonnage can be once more to cargo-carring skip loading, cause skip bucket seriously to transship.In case gig send electricity to promote, heavily loaded skip bucket not only can not promote by forward, can oppositely glide on the contrary.If control ineffectively, heavily loaded skip bucket can slide to the main shaft shaft bottom down, gives the main shaft security improvement incidents that brings on a disaster.

The utility model prevents that the repetition loading technical scheme from having solved this technical barrier.With the A skip loading is example, and the utility model process is described.The A skip bucket will load, and must be in to load the chamber pit shaft place that puts in place, and when mentioning unloading position on the B skip bucket, the A skip bucket just has been in the loading chamber pit shaft place that puts in place.System at first carries out initialization, whether detects control system excision sequence switch then at manual state, if at manual state, in case the A skip bucket has been in the loading chamber pit shaft place that puts in place, and control button presses, and then A measure hopper sector gate will be opened.Manual state is mainly considered extraordinary circumstances uses such as maintenance, fault, and for preventing maloperation, hand push button is arranged in the special-purpose control box usually.If system is in auto state, in case the A skip bucket has been in the loading chamber pit shaft place that puts in place, system reads the tonnage of A measure hopper at this moment, if do not reach the setting tonnage, then A measure hopper sector gate can not be opened, and after the A measure hopper reached the setting tonnage, whether system detected to promote behind the A skip loading last time and put in place and the complete discharge signal, do not put in place or A skip hoisting does not have complete discharge after putting in place if promote behind the last time A skip loading, then A measure hopper sector gate can not be opened.Reach and set the tonnage signal when system detects the A measure hopper, and detect simultaneously promote behind A skip loading last time put in place and the complete discharge signal after, A measure hopper sector gate is opened automatically the A skip bucket is loaded.

In the utility model, put in place and the complete discharge signal by promoting behind detection A measure hopper sector gate switch, loaded weight signal and the A skip loading, utilize the programmable controller program instruction to the control carrying out of A measure hopper sector gate switch locking and release, after guaranteeing that A measure hopper sector gate was opened once, load that control center only receives that A skip hoisting puts in place and the signal of complete discharge after could secondary opening, avoided the generation of A skip bucket repetition loading phenomenon.After skip loading finishes, load control center and simultaneously the shipping ton bit data is sent to gig machine room control center.

Fig. 4 is that the monitoring diagram of circuit is transferred in anti-heavy duty of the present utility model, in the main shaft friction type winder lifting process of colliery, skip bucket is after loading the chamber loading, after the gig operator's station is released the master controller handle, electrical motor rotation head roll, the steel rope that is overlapped on the cylinder applies predetermincd tension by friction force to heavily loaded skip bucket, release adjustable brake controller handle then, give voltage signal of electro-hydraulic pressure regulator device this moment, the Hydraulic Station hydraulic fluid pressure raises, and plate disc brake opens lock, gig begins to quicken operation, carry on the heavy duty skip bucket, opposite side underloading skip bucket is transferred simultaneously, and gig is in the operational process.For guaranteeing the gig parking that accurately puts in place, speed must be decremented to about 0.5M/S during the gig incoming terminal.Therefore, before the gig incoming terminal certain distance, the high pressure that breaks slows down, and on the low-frequency power of changing-over to simultaneously, drags skip bucket at a slow speed to the position that puts in place, stopping-down.Under the effect of the externally pneumatic cylinder mechanical external force of skip bucket base platform gate, sector gate is opened, and realizes heavily loaded dustpan unloading then, and the opposite side skip bucket is loading the chamber loading simultaneously, finishes the next circulation that promotes then.

In colliery main shaft friction type winder heavy duty skip hoisting process, occur heavily loaded skip bucket easily and transfer bob well serious accident.In the heavy duty skip hoisting process, be subjected to security of system, factor affecting such as artificial, might produce the stop off phenomenon, mainly there is following situation: heavily loaded skip bucket stop off in lifting process, if the error of maloperation or system underloading side skip bucket occurs and gets to withdraw deposit on electric and resemble, the downslide falling accident can appear quickening in heavily loaded skip bucket; Heavy duty skip bucket stop off in lifting process, if maloperation or system's error, even if gig does not send, adjustable brake controller handle is in case release, electro-hydraulic pressure regulator device also can produce highly pressurised liquid, plate disc brake will open lock, and under the coal deadweight effect, heavily loaded skip bucket will quicken to glide the generation falling accident in skip bucket; The heavy duty skip bucket is after lifting puts pulleying in place, the heavy duty skip bucket must drop to the position that normally puts in place and just can unload, need this moment spacious lock to transfer heavily loaded skip bucket, if operating personal control is bad, can occurs heavily loaded skip bucket heavily loaded skip bucket under the coal deadweight effect in skip bucket equally and quicken the downslide falling accident.

The anti-heavy duty of the utility model main shaft friction type winder is transferred technical scheme and has been solved this technical barrier, is example with A heavy duty skip hoisting, and the utility model process is described.The winding houses monitoring and control centre at first carries out initialization, and after the A skip loading finished, the gig master controller was released, and this moment, the winding houses monitoring and control centre judged whether gig has applied predetermincd tension to heavily loaded skip bucket.If gig was not applied with heavily loaded skip bucket and put forward predetermincd tension this moment, no matter adjustable brake controller handle is in any position, and the voltage regulator is all exported 0 numerical value, and plate disc brake is to gig brake activation moment, the downslide phenomenon can not appear quickening in the heavy duty skip bucket, can only remain static.After the heavy duty skip bucket obtained putting forward predetermincd tension, if adjustable brake controller handle is released, the voltage regulator was exported the brake off signal, and plate disc brake is spacious lock under the highly pressurised liquid effect, and heavily loaded skip bucket is carried on quickening.The heavy duty skip bucket is carried in the process last, system can monitor gig and get electricity condition, in case the gig power down, heavily loaded skip bucket can run slowly, when in case heavily loaded skip bucket speed is reduced to 0.3M/S, no matter adjustable brake controller handle is in any position, and this moment, electro-hydraulic pressure regulator device was exported 0 numerical value, the plate disc brake band-type brake, to gig brake activation moment, gig is out of service, and heavily loaded skip bucket is in halted state, can not quicken to glide because of deadweight.In case gig provides the correct electric direction that gets, heavily loaded skip bucket obtains the upper lifting force square, quickens again to carry.When A skip hoisting when terminal point puts in place, system can detect the whether pulleying of heavily loaded skip bucket, if heavily loaded skip bucket does not have pulleying, the heavy duty skip bucket unloads, the winding houses monitoring and control centre can compare loading control center A skip loading tonnage data that pass over and the A dustpan unloading tonnage data that the unloading monitoring and control centre passes over simultaneously, in case carrying capacity is consistent with discharging quantity, the B skip bucket loads, gig enters B skip hoisting process, in case A skip loading amount and discharging quantity are inconsistent, then gig can not enter the next circulation that promotes, and must take the artificial measures to handle, and just can enter the next circulation that promotes then.The back pulleying if the A skip bucket puts in place, this moment, the A skip bucket can not unload, because B skip loading mouth has 2 meters left and right sides cushion spaces usually at measure hopper unloading mouth, was far longer than overwind clearance, therefore, the B skip bucket loads under the situation of A skip bucket pulleying, this moment gig friction roll two side draw balances, strength does not glide, on carry the B skip bucket, the A skip bucket is transferred to normally put in place, then the A skip bucket is continued unloading, and then enter the next circulation that promotes.

In the utility model, whether system time detects heavily loaded skip bucket and is in and carries in the strained condition, in case being in, heavily loaded skip bucket puies forward strained condition on non-, then plate disc brake is to gig brake activation moment, gig is in the band-type brake state, guarantee the short of enough upper lifting force squares of heavily loaded skip bucket, can only remain static that chance does not glide; The heavy duty skip bucket puts in place after the unloading, and system can compare dustpan unloading amount and carrying capacity, guarantees that heavily loaded skip bucket has only to unload fully just can transfer the generation of having avoided skip bucket heavy duty, residual coal to transfer phenomenon after quiet; After the heavy duty skip bucket pulleying, the opposite side skip bucket can load, and has guaranteed the balance of gig steel rope two ends skip bucket weight, the accident of having avoided heavily loaded skip bucket to transfer causing out of control.

Claims (1)

1. monitored control system is transferred in the anti-heavy duty of main shaft friction type winder, and comprising: measure hopper control button, measure hopper fan-shaped gate leave sensor, the measure hopper fan-shaped gate closes sensor, measure hopper LOAD CELLS and measure hopper sector gate switch electromagnetic valve; The measure hopper fan-shaped gate leaves sensor and measure hopper fan-shaped gate and closes sensor and be fixed on the measure hopper, the measure hopper LOAD CELLS be installed in measure hopper below; It is characterized in that: the main shaft loading equipment monitoring and control centre comprises that S7-300 Programmable Logic Controller, measure hopper control button, measure hopper fan-shaped gate are opened sensor, the measure hopper fan-shaped gate closes sensor, measure hopper LOAD CELLS, measure hopper sector gate switch electromagnetic valve; Main shaft unloading monitoring and control centre comprises S7-300 Programmable Logic Controller, skip bucket put in place coal position detecting sensor in detector switch, skip bucket pulleying detector switch, the skip bucket, skip bucket bulkhgead gate switch electromagnetic valve; Main shaft hooist machine room monitoring and control centre comprises S7-300 Programmable Logic Controller, communication interface and executive circuit.

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