CN107601244A - The control method of friction type winder variable deceleration point based on variable load - Google Patents
The control method of friction type winder variable deceleration point based on variable load Download PDFInfo
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Abstract
The invention discloses the control method of the friction type winder variable deceleration point based on variable load, control device includes tension detecting apparatus, encoder, synchro switch, double wire system programmable controller, data are detected by the tension force for gathering two cages of friction type winder, according to the payload of each cage and the load difference of two cages, according to the friction type winder equivalent mass of double wire system programmable controller data cell assignment, COMPREHENSIVE CALCULATING goes out the free deceleration after friction type winder reduce-speed sign is sent, under different running situations, export different deceleration point signals, realize that deceleration distance is variable with this.The present invention combines free deceleration and is not more than 0.75m/s with what lifts personnel required2Deceleration is not more than 1.2m/s with lifting material requirement2Deceleration standard, reduce-speed sign and positive and negative braking moment modulated signal are exported to hoist control system, realizes friction type winder safety and economic operation.
Description
Technical field
The invention belongs to coal mine lifting technical field of electric control, is related to friction type winder in reciprocal running up and down
In, deceleration point is apart from the technical scheme problem of method to set up, more particularly to friction type winder based on variable load is variable subtracts
The control method of speed point.
Background technology
Major-minor well lifting system is designed in domestic and international big-and-middle-sized colliery, and main shaft hoisting system produces next time for winding shaft
Coal beneficial to mineral products, auxiliary-well takeup be used for lifting the various materials that underground coal mine uses, instrument, equipment, spoil and
Operating personnel etc..Because friction type winder has too small friction roll, boom hoist cable diameter, compact complete equipment etc.
Advantage and be widely applied in mine hoisting, turn into the preferred main lift machine of coal master's auxiliary-well takeup, at present
The big-and-middle-sized coal master's auxiliary-well takeup in China is most to select friction type winder.
Friction type winder belongs to typical potential energy rotating machinery, and friction type winder is assembled on its friction roll and rubbed
Pad is wiped, is taken on friction lining and covers boom hoist cable, the both ends of boom hoist cable connect hoisting container respectively, frictional in main shaft
In elevator, hoisting container is also referred to as skip bucket, and in auxiliary shaft friction type winder, hoisting container is also referred to as cage.Friction roll
Rotation, carry out passing power by the frictional force between friction lining and boom hoist cable, drive two hoisting containers in the wellbore
Run repeatedly up and down, its workflow be exactly accelerate, constant speed is run, slows down, creeps, stopped in place, then above and below reciprocating
Operation.To ensure certain operational efficiency and security, friction type winder is usually required to set deceleration point, i.e. hoisting container is transported
After row arrives certain stroke, friction type winder sends reduce-speed sign, the friction type winder speed of service is controlled, using just
The mode of power, negative force or art skating, the final stable speed in a 0.5m/s or so, Brake stop, completes one in place
Lift cyclic process.
At present, friction type winder is set in deceleration point distance, the principle generally set according to fixed range, that is, is lifted
When container goes upward to parking terminal certain distance, friction type winder sends reduce-speed sign, then slows down, creeps to terminal and stop
Car.It is changeless that friction type winder deceleration point tradition, which sets distance, is a fixed range, generally in pit shaft or depth
Spend and switch is set on indicator, acted by mechanical collision or electromagnetic induction and trigger reduce-speed sign, not because of the change of increasing productivity
Change and change.The deceleration point signal of fixed range is set, and main cause is that China's elevator electric control is originally designed for TKD, JKMK
Two kinds of forms, both forms are early production, because of it to there is contact analogue relay control system, are realizing that deceleration point can
Difficulty is very big in change.Although later stage China's hoist control system employs contactless digital computer control system, but its
Simply there is contact with computer program substitution early stage in logic control relation
Analogue relay electric-control system, there is no any change on control strategy.Main shaft friction type winder is mainly used to be lifted
The coal that underground back production comes out uses definite weight mode beneficial to mineral products, skip bucket, and friction roll both sides tension force difference is constant, lifting
Load character is single, in deceleration point setting, is designed suitable for set a distance.
Auxiliary shaft friction type winder is mainly used to be repeatedly lifted up and transferred various materials, instrument, equipment, the cash that underground uses
Stone and operating personnel etc., cage can not realize definite weight, can only manually adjust cage load tension difference no more than fair
Perhaps tension force difference, increasing productivity change of properties are big.If fixed range sets friction type winder deceleration point, friction type winder
When lifting heavily loaded, because deceleration is larger, it may occur that distance of creeping increases phenomenon, and friction type winder performance driving economy is poor, simultaneously
It also occur that abseiling phenomenon；When friction type winder lifts underloading, because deceleration is smaller, it may occur that distance of creeping reduces phenomenon,
Friction type winder safety in operation is poor.Therefore, be ensure auxiliary shaft friction type winder operation safety and economic benefit, deceleration point away from
From in setting, should be set according to friction type winder increasing productivity size, deceleration point distance signal has changeability.
The content of the invention
The present invention sets deficiency existing for the deceleration point signal of fixed range to solve above-described friction type winder,
In the case where meeting the precondition of auxiliary shaft friction type winder safe operation, variable subtract is set using following increasing productivity to change
Speed point distance technique scheme, further lift the economy of auxiliary shaft friction type winder operation.
Purpose to illustrate the invention, the present invention define two concepts, friction type winder lifting heavy duty：Lifting heavy duty refers to
Friction type winder is after one lifts cyclic process, the load difference potential energy increase of two cages；Under friction type winder
Put heavy duty：Decentralization heavy duty refers to friction type winder after one lifts cyclic process, the load difference potential energy of two cages
Reduce.
The present invention uses following technical scheme to achieve the above object：Friction type winder based on variable load is variable to be subtracted
The control method of speed point, control device include tension detecting apparatus, encoder, synchro switch, double wire system programmable controller, led to
The tension force detection data of collection two cages of friction type winder are crossed, according to the payload of each cage and two cages
Load difference, according to the friction type winder equivalent mass of double wire system programmable controller data cell assignment, COMPREHENSIVE CALCULATING goes out
Friction type winder reduce-speed sign send after free deceleration, under different running situations, export different deceleration point signals,
Realize that deceleration distance is variable with this.
As the further scheme of the present invention, when receiving lifts personnel's signal, when free deceleration is more than 0.75m/s2
When, with 0.75m/s2Deceleration conversion deceleration point distance signal, double wire system programmable controller export to hoist control system
After deceleration point signal, it is simultaneously emitted by modulating positive force torque signals, makes friction type winder with 0.75m/s2Deceleration runs slowly；
When free deceleration is less than or equal to 0.75m/s2When, with free deceleration conversion deceleration point distance signal, double wire system programmable control
After device processed exports deceleration point signal to hoist control system, friction type winder is run slowly with free deceleration.
As the further scheme of the present invention, when receiving lifting material signal, when free deceleration is more than 1.2m/s2
When, with 1.2m/s2Deceleration conversion deceleration point distance signal, double wire system programmable controller subtract to hoist control system output
After speed point signal, it is simultaneously emitted by modulating positive force torque signals, makes friction type winder with 1.2m/s2Deceleration runs slowly；When
Free deceleration is less than or equal to 1.2m/s2When, with free deceleration conversion deceleration point distance signal, double wire system programmable controller
After exporting deceleration point signal to hoist control system, friction type winder is run slowly with free deceleration.
As the further scheme of the present invention, when receiving lifts personnel's signal, with 0.75m/s2Deceleration conversion is slowed down
Point distance signal, after double wire system programmable controller exports deceleration point signal to hoist control system, it is simultaneously emitted by increase and adjusts
Negative force torque signals processed, make friction type winder with 0.75m/s2Deceleration runs slowly.
As the further scheme of the present invention, when receiving lifting material signal, with 1.2m/s2Deceleration conversion deceleration point
Distance signal, after double wire system programmable controller exports deceleration point signal to hoist control system, it is simultaneously emitted by increase modulation
Negative force torque signals, make friction type winder with 1.2m/s2Deceleration runs slowly.
As the further scheme of the present invention, initialized first after electricity on double wire system programmable controller, Ran Houjin
Row data scan cycle computing, the load data of two cages to receiving calculate, while two cages of calculating is negative
Lotus difference, once starting signal is received, now load number of the double wire system programmable controller two cages received
According to as final data.After double wire system programmable controller receives starting signal, carry out judging promotion signal classification first.Such as
Fruit is lifts personnel's signal, and double wire system programmable controller judges whether according to the load difference and direction of improvement of two cages
For lifting heavy duty, if lifting heavy duty, free deceleration is calculated, if free deceleration is more than 0.75m/s2, double wire system
Programmable controller calculates deceleration distance according to speed, realizes that positive force is slowed down, if free deceleration is less than or equal to 0.75m/
s2, double wire system programmable controller calculates deceleration distance according to speed, realizes and freely slow down, if decentralization heavy duty, two-wire
Programmable controller processed calculates deceleration distance according to speed, and adjustment negative force braking moment presses 0.75m/s2Slow down；If not
Lifts personnel's signal, double wire system programmable controller determine whether to carry according to the load difference and direction of improvement of two cages
Heavy duty is risen, if lifting heavy duty, free deceleration is calculated, if free deceleration is more than 1.2m/s2, double wire system may be programmed
Controller calculates deceleration distance according to speed, realizes that positive force is slowed down, if free deceleration is less than or equal to 1.2m/s2, two-wire
Programmable controller processed calculates deceleration distance according to speed, and realization is freely slowed down, and if decentralization heavy duty, double wire system may be programmed
Controller calculates deceleration distance according to speed, and adjustment negative force braking moment presses 1.2m/s2Slow down.
The beneficial effects of the invention are as follows：The present invention is special for colliery auxiliary shaft friction type winder potential energy rotating machinery
Point, data are detected by the tension force for gathering two cages of friction type winder, calculate the payload and two of each cage
The load difference of individual cage, according to friction type winder system equivalent mass, devise the friction hoisting based on variable load
Machine variable deceleration point control program.COMPREHENSIVE CALCULATING goes out the free deceleration after friction type winder slows down, with reference to free deceleration
It is not more than 0.75m/s with what lifts personnel required2Deceleration is not more than 1.2m/s with lifting material requirement2Deceleration standard, with
Different deceleration point distances is set with the load size of the difference of two cages, to hoist control system output reduce-speed sign and just
Negative braking moment modulated signal, realizes friction type winder safety and economic operation.
Brief description of the drawings
Fig. 1 is friction type winder lifting system figure of the present invention；
Fig. 2 friction type winders lifting speed, time, trip map；
Fig. 3 friction type winders variable deceleration point theory diagram；
Fig. 4 friction type winders variable deceleration point control flow chart；
In figure：1st, friction roll；2nd, brake disc；3rd, disc type brake；4th, directive wheel；5th, boom hoist cable；6 be balance steel wire
Rope；7th, pit shaft；8th, ground well head；9th, underground well head；10th, cage A：11st, cage B；12nd, encoder A;13rd, encoder B；14
Force checking device A；15th, tension detecting apparatus B；16th, synchro switch A；17th, synchro switch B；18th, promotion signal；19th, elevator
Electric-control system；20th, double wire system programmable controller.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
In Fig. 1, friction roll 1 is linked together with friction type winder main shaft, synchronous rotary, and its periphery, which is fixed, to be had
The friction lining of certain coefficient of friction, take on friction lining and cover boom hoist cable 5, the both ends of boom hoist cable 5 connection cage A10,
Cage B11, friction roll 1 rotate, and are driven by the frictional force between the friction lining on boom hoist cable 5 and friction roll 1
Cage A10, cage B11 are up and down reciprocatingly run；Brake disc 2 is a ring steel plate, is fixed on friction roll 1, by disc type brake
Lock 3 applies pressure, produces braking moment；Disc type brake 3 applies normal pressure to brake disc 2 by precompressed butterfly spring,
Frictional force is produced, forms braking moment；What directive wheel 4 was generally used to adjust boom hoist cable 5 and friction roll 1 encloses cornerite, together
When adjust spacing of the boom hoist cable 5 in pit shaft 7；Boom hoist cable 5 is the flexible cable body of frictional drive, dependence and friction roll
The frictional force between friction lining on 1, cage A10, cage B11 is driven up and down reciprocatingly to run；Balance rope 6 is used for balancing
Boom hoist cable 5 the both sides of friction roll 1 weight difference, ensure elevator in any raised position, the both sides of friction roll 1
Boom hoist cable and balance steel wire rope tension difference be substantially at steady state value；Pit shaft 7 is connect ground and underground coal mine logical
Road, the space up and down reciprocatingly run as cage A10, cage B11；Ground well head 8 is the space that ground contacts pit shaft 7, with
The junction of pit shaft 7 is provided with the auxiliary equipment facility such as track, car puller, for loading into cage A10, cage B11 or releasing
Vehicle material etc.；Underground well head 9 is the space that underworkings contacts pit shaft 7, and track, car puller are provided with the junction of pit shaft 7
Etc. auxiliary equipment facility, for loading into cage A10, cage B11 or releasing vehicle material etc.；Cage A10, cage B11 are
Two hoisting containers of friction type winder, for lifting the materials such as material used in coal production, accessory, equipment and people
Member.
In Fig. 1, friction type winder power resources are mainly motor, and motor and friction roll 1 are direct-connected or electronic
Machine utilizes the friction lining on friction roll 1 and boom hoist cable 5 by speed reducer output shaft and the connection rotation of friction roll 1
Between caused frictional force drive cage A10, cage B11 up and down reciprocatingly to run, cage A10, cage B11 be used as have it is certain empty
Between hoisting container, material and the personnel such as material, accessory, equipment used in coal production are lifted, due to cage A10, cage
B11 load differences are inconsistent, therefore lifting heavy duty and decentralization heavy duty two occur in auxiliary shaft friction type winder running
Kind operating mode.
In fig. 2, coordinate curve show friction type winder six-stage operation speed, time, trip map, vertical coordinate
Line represents friction type winder speed, is represented with English alphabet V, v；Horizontal coordinate line represents elevator run time, stroke, uses
English alphabet T, t and H, h are represented.Wherein, v0Friction type winder initial velocity is represented as 0, v1Friction type winder is represented just to add
Speed after speed, v2Represent speed after friction hoisting owner accelerates, i.e., maximum rated speed, constant speed speed, v3Representative frictionally carries
Speed, i.e. creep speed after the machine of liter slows down；t0Represent initial time before friction type winder is run, t1Represent friction type winder
Moment after just accelerating, i.e., main acceleration start time, t2Moment is represented after friction hoisting owner accelerates, i.e., when the constant speed stage starts
Carve, t3The moment after friction type winder constant speed is represented, that is, is reduced speed now the moment, t4Moment is represented after friction type winder slows down, i.e.,
Start creep speed moment, t5Represent friction type winder to creep finish time, that is, start stopping brake moment, t6To be frictional
Moment after elevator stopping brake, friction type winder lifting operation cycle time T=t0+t1+t2+t3+t4+t5+t6；h1To rub
The first accelerating travel of erasing elevator, h2For friction hoisting owner's accelerating travel, h3For friction type winder constant speed stroke, h4For
Friction type winder retarding travel, h5Creeped stroke for friction type winder, h6For friction type winder parking brake stroke, rub
Erasing elevator total kilometres（That is hoisting depth）H= h1+ h2+ h3+ h4+ h5+ h6。
In fig. 2, friction type winder acceleration, deceleration, normal speed numerical value are bigger, and friction hoisting engine efficiency is got over
Height, economic performance are better, but acceleration, deceleration, normal speed numerical value are bigger, and abseiling, system just occurs in friction type winder
The kinetic moment accident potential such as not enough.Therefore friction type winder acceleration-deceleration, maximum constant speed speed will design rational at one
In section.《Safety regulations in coal mine》To friction type winder acceleration, deceleration, maximum rated speed is proposed must
Ask, the friction type winder acceleration of lifts personnel, deceleration≤0.75m/s2, maximum rated speed≤0.5（H is to carry
Rise）, and it is no more than 12 m/s, lift maximum rated speed≤0.6 of friction type winder of material.《Coal mine ground is more
Rope friction type lifting system design specification》It is required that the friction type winder elevator acceleration of lifting material, deceleration≤1.2m/
s2.Therefore, for auxiliary shaft friction type winder, maximum rated speed can only lift according to the speed designs of lifts personnel
Personnel's brief acceleration, deceleration want≤0.75m/s2, lifting material brief acceleration, deceleration can be increased to 1.2m/s2.Friction
Formula elevator is creeped stroke h5For fixed journey system numerical value, principal security cage 10A, cage B11 pass through ground well head 8, underground well
At a slow speed by the way that braking distance h6 is a substantially stationary numerical value, predominantly friction type winder parking row during 9 location aided rebroadcast facility of mouth
Journey, typically in 100mm or so, deceleration point distance definition is S, then deceleration point distance S=h4+h5+h6。
In figure 3, encoder A12 is two-phase photoelectric encoder, and friction roll 1 is coaxially connected, synchronous rotary, difference rotation
Turn the two-phase pulse data signal that direction exports different phase sequences, it is frictional according to the number of pulses received in the unit interval, conversion
Elevator real time execution speed, while added up according to two-phase pulse direction and number of pulses, moreover it is possible to synchronously converse and frictionally carry
Rise machine direction of improvement and stroke；Encoder B13 is two-phase photoelectric encoder, and directive wheel 4 is coaxially connected, synchronous rotary, different
Direction of rotation exports the two-phase pulse data signal of different phase sequences, according to the number of pulses received in the unit interval, conversion friction
Formula elevator real time execution speed, while added up according to two-phase pulse direction and number of pulses, moreover it is possible to synchronously converse frictional
Elevator direction of improvement and stroke；Tension detecting apparatus A14 mainly has pressure sensor, variable connector, single-chip microcomputer, wireless transmission
Device, wireless receiver, data processor etc. are formed, and pressure sensor is arranged between cage A10 and boom hoist cable 5, in real time
Gather the end load of boom hoist cable 5；Tension detecting apparatus B15 mainly has pressure sensor, variable connector, single-chip microcomputer, nothing
Line transmitter, wireless receiver, data processor etc. form, pressure sensor be arranged on cage B11 and boom hoist cable 5 it
Between, the real-time other end end load for gathering boom hoist cable 5；Synchro switch 16 is arranged in pit shaft 7, is protected with ground well head 8
Certain distance is held, detection cage A10 operation physical location, for correcting friction type winder lift stroke, corrects encoder
A12, encoder B13 kinematic error；Synchro switch 17 is arranged in pit shaft 7, and certain distance, detection are kept with ground well head 8
Cage B11 operation physical location, for correcting friction type winder lift stroke, amendment encoder A12, encoder B13
Kinematic error；Operating room of the promotion signal 18 respectively at underground well head 9 and ground well head 8 is sent, for sending lifts personnel
Or material signal classification, promotion signal points number represent different hoisting way；Hoist control system 19 is frictional
The electric control and protection part of elevator, there are power of alterating and direct current, variable-frequency power sources, relay, contactor, sensing protection device etc.
Electric component forms, and completes the electric dragging and braking action of friction type winder；Double wire system programmable controller 20 mainly has
The S7-300 programmable controllers composition of two standby each other, mutual redundancies, data acquisition, free deceleration, deceleration point
The functions such as distance, for the calculating control core of the present invention.
In Fig. 3, encoder A12, encoder B13 two-phase pulse signal export to double wire system programmable controller 20 respectively
Two programmable controllers, the analysis for completing friction type winder lift stroke, direction, speed calculates, accidental conditions
Under, friction roll 1 is consistent with the linear velocity of directive wheel 4, and 2 sets of lifting data that double wire system programmable controller 20 is formed are led in real time
News contrast, when two sets of data are completely the same, data are valid.Other data input to double wire system programmable controller 20 simultaneously
Two programmable controllers.Tension detecting apparatus A14, tension detecting apparatus B15 be respectively completed cage A10, cage B11 it is negative
Lotus detects, and its detection technique has national patent《Detection device for steel wire rope tension of friction type hoister》（The patent No.：
ZL201220665377.5）It is open.
In Fig. 3, double wire system programmable controller 20 is calculated respectively by gathering the data of tension detecting apparatus 14,15
Cage 10A, cage B11 payloads and cage 10A, cage B11 load difference, friction type winder equivalent mass（Bag
Cage 10A, cage B11 mass are included, not including cage 10A, cage B11 load mass）Be defined as M, for can not variable, during programming
To the data cell assignment of double wire system programmable controller 20, cage 10A, cage B11 load equivalent masses are respectively m1、m2, friction
After formula elevator sends promotion signal 18, double wire system programmable controller 20 calculates friction type winder by formula and freely slowed down
Degree, free deceleration are defined as a, a=1.15*（m1-m2）*g/（M+m1+m2）, wherein g is acceleration of gravity.Calculated by formula
The free retarding travel of friction type winder, h4=（–）*（M+m1+m2）/2*1.15*（m1-m2）* g, then deceleration point distance S=
h4+h5+h6.According to《Safety regulations in coal mine》It is required that lifts personnel's acceleration-deceleration be not more than 0.75m/s2With《Coal mine ground is restricted more
Friction hoisting systematic design discipline》It is required that improving material acceleration-deceleration be not more than 1.2m/s2Standard, double wire system programmable control
Device 20 processed exports modulated signal to hoist control system 19, produces certain positive negative moment, realizes friction type winder safety
Economical operation.
In Fig. 3, double wire system programmable controller 20 lifts heavy duty to friction type winder, decentralization severe duty divides
Analysis, according to cage 10A, cage B11 payload and load difference, with reference to the points of promotion signal 18, judgement frictionally carries
The machine of liter is in lifting heavy service mode and still transfers heavily loaded mode.When friction type winder lifting is heavily loaded, double wire system may be programmed
Controller 20 calculates deceleration point distance S, when lifting heavy duty cage A10 or cage B11 with parking spot distance be S when,
After sending reduce-speed sign to hoist control system 19, friction type winder freely slows down or by variable-frequency power generation or dynamic braking
Mode realizes deceleration；When friction type winder decentralization is heavily loaded, double wire system programmable controller 20 calculates deceleration point, when lifting weight
When the cage A10 or cage B11 of load are S with a distance from from parking spot, adjustment variable-frequency power generation is sent to hoist control system 19
Or dynamic braking torque signal, realize that increase braking moment is slowed down.
In Fig. 3, double wire system programmable controller 20 lifts heavy duty to friction type winder, decentralization severe duty divides
Analysis, according to cage 10A, cage B11 payload and load difference, with reference to the points of promotion signal 18, in different operation feelings
Under condition, different reduce-speed signs is exported.When receiving lifts personnel's signal, double wire system programmable controller 20 is to elevator electric control
System 19 exports reduce-speed sign, is simultaneously emitted by modulating brake torque signals, makes friction type winder with 0.75m/s2Deceleration subtracts
Speed；When receiving lifting material signal, double wire system programmable controller 20 exports reduce-speed sign to hoist control system 19, together
When send modulating brake torque signals, make friction type winder with 1.2m/s2Deceleration is slowed down.
In Fig. 3, double wire system programmable controller 20 lifts heavy duty to friction type winder, decentralization severe duty divides
Analysis, according to cage 10A, cage B11 payload and load difference, when receiving lifting material signal, double wire system may be programmed
Controller 20 is according to the given speed of decentralization heavy duty and with 1.2m/s2Deceleration, inverse go out deceleration point signal, once arrive deceleration
Position, double wire system programmable controller 20 export modulating brake torque signals to hoist control system 19, increase braking moment,
Make friction type winder with 1.2m/s2Deceleration is slowed down.
In Fig. 4, initialized first after electricity on double wire system programmable controller 20, then carry out data scanning circulation
Computing, cage 10A, the cage B11 load data received is calculated, at the same calculate cage 10A, cage B11 it is negative
Lotus difference, once starting signal is received, cage 10A, the cage B11 that now double wire system programmable controller 20 receives
Load data as final data.After double wire system programmable controller 20 receives starting signal, judgement lifting is carried out first
Signal classification.If lifts personnel's signal, double wire system programmable controller 20 is according to cage 10A, cage B11 load difference
And direction of improvement, determine whether lifting heavy duty, if lifting heavy duty, free deceleration is calculated, if free deceleration
More than 0.75m/s2, double wire system programmable controller 20 calculates deceleration distance S according to speed, realizes that positive force is slowed down, if certainly
0.75m/s is less than or equal to by deceleration2, double wire system programmable controller 20 calculates deceleration distance S according to speed, realizes freely
Slow down, if decentralization heavy duty, double wire system programmable controller 20 calculates deceleration distance S, adjustment negative force braking according to speed
Torque presses 0.75m/s2Slow down；If not lifts personnel's signal, double wire system programmable controller 20 is according to cage 10A, cage
B11 load difference and direction of improvement, determine whether lifting heavy duty, if lifting heavy duty, calculate free deceleration, such as
The free deceleration of fruit is more than 1.2m/s2, double wire system programmable controller 20 calculates deceleration distance S according to speed, realizes positive force
Slow down, if free deceleration is less than or equal to 1.2m/s2, double wire system programmable controller 20 calculates deceleration distance according to speed
S, realization are freely slowed down, and if decentralization heavy duty, double wire system programmable controller 20 calculates deceleration distance S according to speed, adjusts
Whole negative force braking moment presses 1.2m/s2Slow down.
Described above is present pre-ferred embodiments, for the ordinary skill in the art, according to the present invention's
Teaching, in the case where not departing from the principle of the present invention and spirit, the changes, modifications, replacement and the change that are carried out to embodiment
Type is still fallen within protection scope of the present invention.
Claims (6)
1. the control method of the friction type winder variable deceleration point based on variable load, it is characterised in that control device includes
Tension detecting apparatus, encoder, synchro switch, double wire system programmable controller, by gathering two cages of friction type winder
Tension force detection data, according to the payload of each cage and the load difference of two cages, may be programmed according to double wire system
The friction type winder equivalent mass of controller data unit assignment, COMPREHENSIVE CALCULATING go out after friction type winder reduce-speed sign sends
Free deceleration, under different running situations, export different deceleration point signals, realize that deceleration distance is variable with this.
2. the control method of friction type winder variable deceleration point of the base according to claim 1 based on variable load, its
It is characterised by, when receiving lifts personnel's signal, when free deceleration is more than 0.75m/s2When, with 0.75m/s2Deceleration converts
Deceleration point distance signal, after double wire system programmable controller exports deceleration point signal to hoist control system, it is simultaneously emitted by adjusting
Positive force torque signals processed, make friction type winder with 0.75m/s2Deceleration runs slowly；When free deceleration is less than or equal to
0.75m/s2When, converted deceleration point distance signal with free deceleration, double wire system programmable controller is to hoist control system
After exporting deceleration point signal, friction type winder is run slowly with free deceleration.
3. the control method of the friction type winder variable deceleration point according to claim 1 based on variable load, it is special
Sign is, when receiving lifting material signal, when free deceleration is more than 1.2m/s2When, with 1.2m/s2Deceleration conversion is slowed down
Point distance signal, after double wire system programmable controller exports deceleration point signal to hoist control system, it is being simultaneously emitted by modulation just
Power torque signals, make friction type winder with 1.2m/s2Deceleration runs slowly；When free deceleration is less than or equal to 1.2m/s2
When, with free deceleration conversion deceleration point distance signal, double wire system programmable controller exports to hoist control system to slow down
After point signal, friction type winder is run slowly with free deceleration.
4. the control method of the friction type winder variable deceleration point according to claim 1 based on variable load, it is special
Sign is, when receiving lifts personnel's signal, with 0.75m/s2Deceleration conversion deceleration point distance signal, double wire system programmable control
After device processed exports deceleration point signal to hoist control system, increase modulation negative force torque signals are simultaneously emitted by, make frictionally to carry
The machine of liter is with 0.75m/s2Deceleration runs slowly.
5. the control method of the friction type winder variable deceleration point according to claim 1 based on variable load, it is special
Sign is, when receiving lifting material signal, with 1.2m/s2Deceleration conversion deceleration point distance signal, double wire system programmable control
After device processed exports deceleration point signal to hoist control system, increase modulation negative force torque signals are simultaneously emitted by, make frictionally to carry
The machine of liter is with 1.2m/s2Deceleration runs slowly.
6. the control method of the friction type winder variable deceleration point according to claim 1 based on variable load, it is special
Sign is, is initialized first after electricity on double wire system programmable controller, then carries out data scanning loop computation, to receiving
To the load datas of two cages calculated, while calculate the load difference of two cages, once receive starting signal,
Now double wire system programmable controller may be programmed the load data of two cages received as final data, double wire system
After controller receives starting signal, carry out judging promotion signal classification first, if lifts personnel's signal, double wire system can be compiled
Range controller determines whether lifting heavy duty, if lifting heavy duty, meter according to the load difference and direction of improvement of two cages
Free deceleration is calculated, if free deceleration is more than 0.75m/s2, double wire system programmable controller calculates according to speed to be subtracted
Fast distance, realize that positive force is slowed down, if free deceleration is less than or equal to 0.75m/s2, double wire system programmable controller is according to speed
Deceleration distance is calculated, realization is freely slowed down, and if decentralization heavy duty, double wire system programmable controller calculates according to speed to be subtracted
Fast distance, adjustment negative force braking moment press 0.75m/s2Slow down；If not lifts personnel's signal, double wire system programmable controller
According to the load difference and direction of improvement of two cages, lifting heavy duty is determined whether, if lifting heavy duty, calculate freedom
Deceleration, if free deceleration is more than 1.2m/s2, double wire system programmable controller calculates deceleration distance according to speed, real
Existing positive force is slowed down, if free deceleration is less than or equal to 1.2m/s2, double wire system programmable controller calculates deceleration according to speed
Distance, realization are freely slowed down, and if decentralization heavy duty, double wire system programmable controller calculates deceleration distance according to speed, adjusts
Whole negative force braking moment presses 1.2m/s2Slow down.
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