CN110466955A - A kind of scratch board conveyor tensioning control method and control device - Google Patents
A kind of scratch board conveyor tensioning control method and control device Download PDFInfo
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- CN110466955A CN110466955A CN201910740976.5A CN201910740976A CN110466955A CN 110466955 A CN110466955 A CN 110466955A CN 201910740976 A CN201910740976 A CN 201910740976A CN 110466955 A CN110466955 A CN 110466955A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a kind of scratch board conveyors to be tensioned control method and device, the described method comprises the following steps: parameters acquiring procedure, obtains the torque of tensioning control model, tail-driving motor set by user；It is tensioned rate-determining steps, corresponding control is executed according to set tensioning control model, being tensioned control model is stroke adjustment mode or tension adjustment mode, and stroke adjustment mode adjusts the stroke of hydraulic cylinder according to torque, and tension adjustment mode adjusts tension according to the torque.The case where this method directly reflects load according to the torque of tail-driving motor, dynamic regulation is carried out according to the tension of load regulation tensioning hydro-cylinder or stroke, so that scratch board conveyor remains at suitable tension value during transportation, finally chain is maintained in reasonable deformation range, prevent card chain, chain rupture or damage sprocket wheel the problem of, and because overtension reduce chain service life the problem of.
Description
Technical field
The invention belongs to coal-mine integrated-mining equipment control field, in particular to a kind of scratch board conveyor tensioning control method and control
Device processed.
Background technique
The tensioning control mode of existing underground coal mine scratch board conveyor mainly has: 1, carrying out according to set setting pre-tensioning
Tension calibration is arranged, and tension is no longer adjusted in transporter operation, because of its working characteristics (coal winning machine position, coal breakage, coal piling, card
Chain etc.), conveyor chain load variation is big, causes the deformation quantity of chain unstable, is reflected in the tension of tail tensioning oil cylinder
It is more big changes.If leading to loose chain because chain deformation quantity is excessive, chain can be led if head or tail vertical chain are serious
Cause the generation of card chain accident, serious possibility chain rupture or damage sprocket wheel.Conversely, if the overtension of chain, prolonged tension
It is excessive to will lead to chain fatigue, shortening chains service life.2, by detection tail lappet vertical direction tension feedback come regulating system
Tension, to achieve the purpose that system chain tension controls, but lappet vertical direction tension sensor easily damages, and can not have for a long time
Effect operation.
Summary of the invention
The present invention can not carry out adaptable adjustment according to load for tensioning in the prior art control, lead to chain
Deformation quantity is unstable, there are problems that easy card chain, chain rupture or damage sprocket wheel, if the overtension of chain, prolonged tension
The problem of excessive chain that will lead to is tired, the shortening chains service life proposes a kind of scratch board conveyor tensioning control method, can solve
The certainly above problem.
For achieving the above object, the present invention, which adopts the following technical solutions, is achieved:
A kind of scratch board conveyor tensioning control method, comprising the following steps:
Parameters acquiring procedure obtains the torque of tensioning control model, tail-driving motor；
Rate-determining steps are tensioned, corresponding control are executed according to set tensioning control model, the tensioning control model is row
Journey shaping modes or tension adjustment mode, the stroke adjustment mode adjust the stroke of hydraulic cylinder, institute according to the torque
It states tension adjustment mode and tension is adjusted according to the torque, the tension is pulling force of the oil cylinder to chain.
Further, in parameters acquiring procedure, further include obtaining pre-tensioner mark and transporter running mark, only work as fortune
When defeated machine running mark enables, corresponding control is executed according to set tensioning control model.
Further, it when pre-tensioner mark is enabled, is tensioned in rate-determining steps according to the pretension of setting as target
Power adjusts the The hydraulic oil in oil cylinder, when tension reaches pretension, records the stroke of current hydraulic oil cylinder as pre-tensioner row
Journey, and holding control is carried out to the pretensioning stroke.
Further, the stroke adjustment mode includes: calculating target stroke, adjusts hydraulic cylinder to target stroke；Institute
State the calculation method of target stroke are as follows:
If the torque is less than the first setting value, target stroke=pretensioning stroke+displacement section increment；
If the torque is not less than the first setting value and less than the second setting value, target stroke=pretensioning stroke+N1 × displacement
Section increment；
If the torque is not less than the second setting value, target stroke=pretensioning stroke+N2 × displacement section increment, the displacement
Section increment is to preset parameter, wherein N2 > N1 > 0.
Further, when using stroke adjustment mode tuning, further include the steps that detecting tension, and by detected
Power is compared with tension target set point and tension protection upper limit value respectively, when tension is less than tension target set point, control
System load solenoid valve, makes hydraulic oil inject oil cylinder rodless cavity, until meeting tension not less than tension target set point, when tension is big
When tension protects upper limit value, control unloading solenoid valve makes hydraulic oil inject cylinder rod chamber.
Further, when using stroke adjustment mode tuning, if tension is persistently greater than tension protection upper limit value, liquid is controlled
Pressure oil is discharged from oil cylinder, protects upper limit value no more than tension until meeting tension.
Further, the tension adjustment mode includes: calculating goal tension, adjusts hydraulic oil and enters or be discharged oil
Cylinder, until tension reaches the goal tension；The calculation method of the goal tension are as follows:
If the torque is less than the first setting value, goal tension=pretension+pressure increment；
If the torque is not less than the first setting value and less than the second setting value, goal tension=pretension+N1 × pressure increment；
If the torque is not less than the second setting value, goal tension=pretension+N2 × pressure increment, wherein N2 > N1 > 0.
Further, the pressure increment is that tension corrects entry values/3, and the tension amendment entry values are setup parameter.
Further, further include the steps that setting increment start-up study, when transporter running mark enables, be set meeting
After increment start-up study, tensioning rate-determining steps are executed.
The present invention proposes a kind of scratch board conveyor tensioning control device simultaneously, comprising:
Tension detecting element is set on tail hydraulic cylinder, for detecting detection chain to the pressure of oil cylinder；
Stroke detection element is set on tail hydraulic cylinder, for detecting the stroke of hydraulic cylinder；
It is tensioned control module, is connect by can bus with scratch board conveyor controller, for receiving scratch board conveyor controller
The parameter of transmission, and execute tensioning rate-determining steps；
The parameter that scratch board conveyor controller is sent includes at least: the torque of tensioning control signal, tail-driving motor；
The tensioning rate-determining steps include: to execute corresponding control, the tensioning control according to set tensioning control model
Mode is stroke adjustment mode or tension adjustment mode, and the stroke adjustment mode adjusts hydraulic cylinder according to the torque
Stroke, the tension adjustment mode adjust tension according to the torque, and the tension is pulling force of the oil cylinder to chain.
Compared with prior art, the advantages and positive effects of the present invention are: it is directly anti-according to the torque of tail-driving motor
The case where reflecting load carries out tension adjustment or stroke adjustment, namely the tension according to load regulation tensioning hydro-cylinder by torque
Or stroke carries out dynamic regulation and finally makes so that scratch board conveyor remains at suitable tension value during transportation
The problem of obtaining chain to be maintained in reasonable deformation range, preventing card chain, chain rupture or damage sprocket wheel, and because of overtension
The problem of reducing the service life of chain.
After a specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it is also possible to obtain other drawings based on these drawings.
A kind of embodiment flow chart of Fig. 1 scratch board conveyor tensioning control method proposed by the present invention；
Fig. 2 is a kind of embodiment functional-block diagram of scratch board conveyor tensioning control device proposed by the present invention；
Fig. 3 is a kind of example structure schematic diagram of scratch board conveyor tensioning control device proposed by the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to drawings and examples,
Invention is further described in detail.
It should be noted that in the description of the present invention, term " on ", "lower", "left", "right", " perpendicular ", " cross ", "inner",
The direction of the instructions such as "outside" or the term of positional relationship are direction based on the figure or positional relationship, this is just for the sake of just
In description, rather than indication or suggestion described device or element must have a particular orientation, constructed and grasped with specific orientation
Make, therefore is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot manage
Solution is indication or suggestion relative importance.(whether being added according to case actual conditions)
Embodiment one, the present embodiment propose a kind of scratch board conveyor tensioning control method, as shown in Figure 1, comprising the following steps:
Parameters acquiring procedure obtains the torque of tensioning control model, tail-driving motor set by user；
Rate-determining steps are tensioned, corresponding control are executed according to set tensioning control model, wherein tensioning control model is row
Journey shaping modes or tension adjustment mode, stroke adjustment mode are the stroke that hydraulic cylinder is adjusted according to torque, tension adjustment
Mode is that tension is adjusted according to torque, and tension is oil cylinder to the pulling force of chain, and that reflects tensioning hydro-cylinders to the tightening force of chain.
This control method is to make adjusting by torque, since different stages and transporter load are different, specifically reflects torque
Therefore difference carries out tension adjustment or stroke adjustment by torque in this method, so that scratch board conveyor is during transportation
Remain at suitable tension value, be maintained at chain in reasonable deformation range, prevent card chain, chain rupture or
The problem of damaging sprocket wheel.300 can be greater than for transporter length by being manually set, under normal circumstances by being tensioned control model
The applicable stroke adjustment mode of rice.Since chain length is longer, the springing stroke amount of whole chain is bigger, is more suitably based on stroke
Control, the deformation of chain is adjusted by way of directly adjusting hydraulic cylinder stroke, most directly effectively.It is low for chain length
In 300 meters of transporter, since its chain is relatively short, the springing stroke amount of whole chain is smaller, is more suitable for tension adjustment
Mode, due to the deformation of short chain the mode of stroke adjustment is reflected it is more sensitive, when the precision of stroke adjustment mode is not up to
When arriving and its is fine, chain is easy to cause excessively to be tensioned, is easily damaged chain for a long time, by using tension adjustment mould in this programme
Formula realizes the deformation of control chain by control tension, and the deformation of chain and Stress Control are more stable, are not in excessively to open
Tight situation.It certainly, can also be according to the suitable tensioning control mould of the factors selection such as chain thickness, transporter operation terrain environment
Formula.
It further include obtaining pre-tensioner mark and transporter running mark in parameters acquiring procedure, only when transporter is run
When mark is enabled, corresponding control is executed according to set tensioning control model.
Length due to scraping transporter in entire fully mechanized coal face is generally gone back before 200 meters to 400 meters, conveyor starting
Including carrying out pre-tensioner control, pre-tensioner control is only that static tensioning has been carried out to chain, and transporter is only operating normally about
After a cycle (one circle of chain operation), the tension truth of entire conveyor chain can just be embodied.
When pre-tensioner mark is enabled, it is tensioned in rate-determining steps according to the pretension of setting as goal tension, adjusts oil
The hydraulic oil in cylinder records the stroke of current hydraulic oil cylinder as pretensioning stroke, and to institute when tension reaches pretension
It states pretensioning stroke and carries out holding control.
Stroke adjustment mode includes: calculating target stroke, adjusts hydraulic cylinder to target stroke；The calculating side of target stroke
Method are as follows:
If the torque is less than the first setting value, target stroke=pretensioning stroke+displacement section increment；
If the torque is not less than the first setting value and less than the second setting value, target stroke=pretensioning stroke+N1 × displaced segments
Position increment；
If the torque is not less than the second setting value, target stroke=pretensioning stroke+N2 × displacement section increment, the displacement
Section increment is to preset parameter, wherein N2 > N1 > 0, N1, N2 can be arranged by program, and selection is closed according to the actual situation
Suitable value is set.
Wherein, the first setting value, the second setting value are preset threshold, relative to the percentage of Rated motor load, first
Setting value is less than the second setting value, and when transporter initial launch, load is minimum, and torque is also minimum, when load gradually increases,
Torque increases accordingly, and load causes the deformation quantity of chain also to increase accordingly, in order to maintain rationally the deformation quantity of chain
Range, need to increase the stroke of hydraulic cylinder, judge section by dividing several, when torque is changing into separately from a section
When an outer section, stroke is adjusted, at the same section, generally not to Traffic control system, interval migration adjustment movement
It is all just to start execution by the filtering data confirmation of long period, in this way it is possible to prevente effectively from frequent malfunction when critical value
Make.
When with pre-tensioner mark, and when being able to carry out pre-tensioner control, pretensioning stroke is when tension reaches pretension
When, the stroke of the current hydraulic oil cylinder recorded, as pretensioning stroke.
In the present embodiment, the first setting value is 40%, and the second setting value is 80%, and when torque is lower than 40%, stroke increases
One displacement section increment, when torque is higher than 40% and is lower than 80%, stroke is further added by a displacement section increment, when torque height
When 80%, stroke is further added by a displacement section increment.When as soon as low torque section is fallen back in torque, corresponding stroke
A displacement section increment can be reduced, so that stroke matches with load.
Certain entire control period, program still monitors tension sensor data, to guarantee that tension value is not less than tension
Target set point is not more than tension protection upper limit value, to ensure operational safety.Therefore, when using stroke adjustment mode tune
When section, further include the steps that detecting tension, and tension detected is protected the upper limit with tension target set point and tension respectively
Value is compared, and when tension is less than tension target set point, control load solenoid valve makes hydraulic oil inject oil cylinder rodless cavity,
Increase oil cylinder tension, until meeting tension not less than tension target set point, when tension is greater than tension protection upper limit value, control
System unloading solenoid valve, makes hydraulic oil inject cylinder rod chamber, and the discharge of rodless cavity hydraulic oil reduces tension until protecting not higher than tension
Protect upper limit value.
When using stroke adjustment mode tuning, if tension is persistently greater than tension protection upper limit value, hydraulic oil is controlled from oil
Cylinder discharge protects upper limit value no more than tension until meeting tension, prevents overtension from the generation of situations such as chain rupture occur.
As a preferred embodiment, tension adjustment mode includes: calculating goal tension, adjust hydraulic oil enter or
Oil cylinder is discharged, until tension reaches goal tension；The calculation method of goal tension are as follows:
If torque is less than the first setting value, goal tension=pretension+pressure increment；
If torque is not less than the first setting value and less than the second setting value, goal tension=pretension+N1 × pressure increment；
If torque is not less than the second setting value, goal tension=pretension+N2 × pressure increment.
Tension force is equally related with the real-time torque of transporter tail motor, actually reflects related with load.Transport
When machine initial launch, load is minimum, and torque is also minimum, and when load gradually increases, torque increases, and load leads to the shape of chain
Variable also increases accordingly, and in order to which the deformation quantity of chain is maintained reasonable range, needs to increase tension, if by dividing
Dry judges section, when torque is changing into another section from a section, is adjusted to tension, in the same section
When, generally not to tension adjustment, interval migration adjustment movement is all just to start to execute by the filtering data confirmation of long period
, in this way it is possible to prevente effectively from frequent malfunction when critical value.
Pretension is set in setup parameter, and pressure increment is that tension corrects entry values/3, and tension corrects typing
Value is setup parameter, and value range is 20 Bar -30Bar.
In the present embodiment, the first setting value is 40%, and the second setting value is 80%, and when torque is lower than 40%, tension increases by 1/
3 tension amendment entry values are further added by 1/3 " tension amendment typing " value when between 40% and 80%, when being greater than 80%,
It is further added by 1/3 " tension amendment typing " value, when low one torque section is fallen back in torque, tension will reduce 1/3
Tension corrects entry values.
Further include the steps that setting increment start-up study, when transporter running mark enables, is meeting setting increment starting
After delay, tensioning rate-determining steps are executed.Transporter entire fully mechanized coal face length generally at 200 meters to 400 meters, conveyor starting
Pre-tensioner control before is only that static tensioning has been carried out to chain, and transporter is only operating normally about a cycle (chain
One circle of operation) after, the tension truth of entire conveyor chain can just embody, and therefore, be prolonged by controlling increment starting
When, tensioning rate-determining steps are executed after operating normally about a cycle, can more reflect true chain tension, so that control
It is more accurate, the duration of increment start-up study can be set.
After transporter is out of service, if entire conveyor chain can be constantly in the state of tight chain without loose chain,
For the chain of this period out of service for transporter, inherently a kind of fatigue loss.But field personnel is come
It says, is generally not intended to loose chain movement outer intentionally during transporter is safeguarded, will appear human safety issues in this way.So in order to
Adapt to different operating condition and personnel demand, can by increase loose chain action delay can setup parameter realize.If transporter is raw
It between term, because a variety of causes leads to hang-up, but can resume production quickly, it is more than general for delay time need to only being set
The recovery time of hang-up, in this way between unexpected down period, what loose chain was not carried out when acting.Moreover it is actually shutdown maintenance
When, and can the loose chain of cracking progress.It, equally can will " pine if staff is not desired to allow transporter pine chain during maintenance
Maximum value (about 20 hours) are arrived in chain action delay " setting, thus can be to avoid chain movement loose during maintenance crew.Likewise,
If staff there are other demands, controller can also be set to manual mode, thus can freely be controlled.Total
For, this is set to meet a variety of requirements.Therefore, after transporter is out of service, according to the loose chain time of setting
After delay, controller carries out loose chain to chain, and loose chain stroke is the half of current stroke.
Embodiment two, the present embodiment propose a kind of scratch board conveyor tensioning control device, as shown in Figure 2, comprising:
Tension detecting element is set on tail hydraulic cylinder, for detecting detection chain to the pressure of oil cylinder；
Stroke detection element is set on tail hydraulic cylinder, for detecting the stroke of hydraulic cylinder；
It is tensioned control module, is connect by can bus with scratch board conveyor controller, for receiving scratch board conveyor controller
The parameter of transmission, and tensioning rate-determining steps are executed, tensioning rate-determining steps are mainly used for controlling the stroke or tension of tensioning hydro-cylinder；
The parameter that scratch board conveyor controller is sent includes at least: the torque of tensioning control signal, tail-driving motor, tail drive
The torque percentage substitution of tail-driving motor can also be used in the torque of dynamic motor；Wherein, tensioning control signal includes pre-tensioner
Signal and scratch board conveyor start stop signal.
Tensioning rate-determining steps include: to execute corresponding control according to set tensioning control model, are tensioned control model
For stroke adjustment mode or tension adjustment mode, stroke adjustment mode adjusts the stroke of hydraulic cylinder, tension tune according to torque
Section mode adjusts tension according to torque, and tension is pulling force of the oil cylinder to chain.
Tension detecting element can realize that stroke detection element can be real using stroke sensor using tension sensor
Existing, the tension sensor and stroke sensor that this control device uses are by being installed on tail hydraulic cylinder, tension sensor
Oil cylinder rodless cavity pressure is detected, i.e. to oil cylinder working-pressure, both sensors are installed in non-action or exist opposite detection chain
A possibility that place of friction, opposite working environment is safer, accidental damage is smaller.And two kinds are passed in control program
Sensor has all done breakdown judge and processing, once exception occurs in sensor, automatic control mode enters fault case, and system is no longer right
Oil cylinder working-pressure or stroke are adjusted.
Control method is tensioned for details, reference can be made to recording in embodiment one, this will not be repeated here, it should be noted that transporter
The start and stop of driving portion motor, (including pre-tensioner signal, transporter run signal, transporter stop for torque and auto-tensioning signal
Machine signal) it is all to be given by scratch board conveyor controller.It is tensioned control module and passes through can bus and scratch board conveyor controller
Connection, obtains the information such as corresponding running mark parameter.
As shown in figure 3, tensioning control device can also include display screen 11, scanning keyboard 12, emergency stop switch 13, control and press
Button 14, rotary switch 15 etc., wherein display screen 11 is used for display controller operation data, collected analog quantity, digital quantity number
According to, limit Value Data and be arranged parameter data.Scan input etc. of the keyboard 12 for display screen operation and parameter setting.Emergency stop
Switch 13 is used for the emergency stop operation under the state of emergency, takes the control of emergency stop switch auto-tensioning and stops.Control button 14 is used respectively
In manual tension+, manual tension-, manual oil sucting valve control, manual fuel feeding valve control.Rotary switch 15 is for switching manual mould
Formula and automatic mode.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although referring to aforementioned reality
Applying example, invention is explained in detail, for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of scratch board conveyor is tensioned control method, which comprises the following steps:
Parameters acquiring procedure obtains the torque of tensioning control model, tail-driving motor；
Rate-determining steps are tensioned, corresponding control are executed according to set tensioning control model, the tensioning control model is row
Journey shaping modes or tension adjustment mode, the stroke adjustment mode adjust the stroke of hydraulic cylinder, institute according to the torque
It states tension adjustment mode and tension is adjusted according to the torque, the tension is pulling force of the oil cylinder to chain.
2. control method according to claim 1, which is characterized in that further include that acquisition is pre-tensioner in parameters acquiring procedure
Mark and transporter running mark execute only when transporter running mark is enabled according to set tensioning control model
Corresponding control.
3. control method according to claim 2, which is characterized in that when pre-tensioner mark is enabled, be tensioned rate-determining steps
According to the pretension of setting as goal tension, adjust the The hydraulic oil in oil cylinder, when tension reaches pretension, record is worked as
The stroke of preceding hydraulic cylinder carries out holding control as pretensioning stroke, and to the pretensioning stroke.
4. control method according to claim 1, which is characterized in that the stroke adjustment mode includes: calculating target line
Journey adjusts hydraulic cylinder to target stroke；The calculation method of the target stroke are as follows:
If the torque is less than the first setting value, target stroke=pretensioning stroke+displacement section increment；
If the torque is not less than the first setting value and less than the second setting value, target stroke=pretensioning stroke+N1 × displaced segments
Position increment；
If the torque is not less than the second setting value, target stroke=pretensioning stroke+N2 × displacement section increment, the displacement
Section increment is to preset parameter, wherein N2 > N1 > 0.
5. control method according to claim 4, which is characterized in that when using stroke adjustment mode tuning, further include
The step of detecting tension, and tension detected is compared with tension target set point and tension protection upper limit value respectively,
When tension is less than tension target set point, control load solenoid valve makes hydraulic oil inject oil cylinder rodless cavity, until meeting tension
Not less than tension target set point, when tension is greater than tension protection upper limit value, control unloading solenoid valve makes hydraulic oil injection oil
Cylinder rod chamber.
6. control method according to claim 5, which is characterized in that when using stroke adjustment mode tuning, if tension
Persistently it is greater than tension and protects upper limit value, control hydraulic oil is discharged from oil cylinder, protects upper limit value no more than tension until meeting tension.
7. control method according to claim 1, which is characterized in that the tension adjustment mode includes: to calculate target
Power adjusts hydraulic oil and enters or be discharged oil cylinder, until tension reaches the goal tension；The calculation method of the goal tension
Are as follows:
If the torque is less than the first setting value, goal tension=pretension+pressure increment；
If the torque is not less than the first setting value and less than the second setting value, goal tension=pretension+N1 × pressure increment；
If the torque is not less than the second setting value, goal tension=pretension+N2 × pressure increment, wherein N2 > N1 > 0.
8. control method according to claim 7, which is characterized in that the pressure increment is that tension corrects entry values/3,
The tension amendment entry values are setup parameter.
9. control method according to claim 1-8, which is characterized in that further include setting increment start-up study
Step when transporter running mark enables, after meeting setting increment start-up study, executes tensioning rate-determining steps.
10. a kind of scratch board conveyor is tensioned control device characterized by comprising
Tension detecting element is set on tail hydraulic cylinder, for detecting detection chain to the pressure of oil cylinder；
Stroke detection element is set on tail hydraulic cylinder, for detecting the stroke of hydraulic cylinder；
It is tensioned control module, is connect by can bus with scratch board conveyor controller, for receiving scratch board conveyor controller
The parameter of transmission, and execute tensioning rate-determining steps；
The parameter that scratch board conveyor controller is sent includes at least: the torque of tensioning control signal, tail-driving motor；
The tensioning rate-determining steps include: to execute corresponding control, the tensioning control according to set tensioning control model
Mode is stroke adjustment mode or tension adjustment mode, and the stroke adjustment mode adjusts hydraulic cylinder according to the torque
Stroke, the tension adjustment mode adjust tension according to the torque, and the tension is pulling force of the oil cylinder to chain.
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| CN201910740976.5A CN110466955B (en) | 2019-08-12 | 2019-08-12 | Tensioning control method and device for scraper conveyer |
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| CN201910740976.5A CN110466955B (en) | 2019-08-12 | 2019-08-12 | Tensioning control method and device for scraper conveyer |
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| CN111285029A (en) * | 2020-03-20 | 2020-06-16 | 青岛中加特电气股份有限公司 | Control method of tail tensioning electromagnetic valve of scraper conveyor |
| CN111850285A (en) * | 2020-03-20 | 2020-10-30 | 张家港宏昌钢板有限公司 | Anti-breaking control method for sorbite salt bath line wire |
| CN112520325A (en) * | 2020-12-10 | 2021-03-19 | 福建龙净环保股份有限公司 | Pipe belt conveyor tensioning control method and device and pipe belt conveyor |
| CN113086525A (en) * | 2021-04-30 | 2021-07-09 | 郑州煤矿机械集团股份有限公司 | Automatic tensioning system for scraper chain and control method thereof |
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| CN114476578A (en) * | 2022-01-18 | 2022-05-13 | 宁夏天地奔牛实业集团有限公司 | Automatic tension control method for scraper conveyor chain based on load following control |
| CN114604596A (en) * | 2022-04-15 | 2022-06-10 | 河北工业大学 | Multi-point unloading machine control system |
| CN118062489A (en) * | 2024-04-19 | 2024-05-24 | 山东科技大学 | Chain transmission tension pulsation real-time monitoring and controlling system of scraper conveyor |
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| CN111285029A (en) * | 2020-03-20 | 2020-06-16 | 青岛中加特电气股份有限公司 | Control method of tail tensioning electromagnetic valve of scraper conveyor |
| CN111850285A (en) * | 2020-03-20 | 2020-10-30 | 张家港宏昌钢板有限公司 | Anti-breaking control method for sorbite salt bath line wire |
| CN111285029B (en) * | 2020-03-20 | 2021-11-30 | 青岛中加特电气股份有限公司 | Control method of tail tensioning electromagnetic valve of scraper conveyor |
| CN112520325A (en) * | 2020-12-10 | 2021-03-19 | 福建龙净环保股份有限公司 | Pipe belt conveyor tensioning control method and device and pipe belt conveyor |
| CN112520325B (en) * | 2020-12-10 | 2022-07-08 | 福建龙净环保股份有限公司 | Pipe belt conveyor tensioning control method and device and pipe belt conveyor |
| CN113148559A (en) * | 2021-03-30 | 2021-07-23 | 郑州煤矿机械集团股份有限公司 | Method for calculating holding pressure of telescopic oil cylinder of automatic conveyor chain tensioning system |
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| CN114476578B (en) * | 2022-01-18 | 2024-02-06 | 宁夏天地奔牛实业集团有限公司 | Automatic tensioning control method for scraper chain based on load following control |
| CN114604596A (en) * | 2022-04-15 | 2022-06-10 | 河北工业大学 | Multi-point unloading machine control system |
| CN114604596B (en) * | 2022-04-15 | 2023-08-22 | 江苏科瑞德智控自动化科技有限公司 | Multi-point unloader control system |
| CN118062489A (en) * | 2024-04-19 | 2024-05-24 | 山东科技大学 | Chain transmission tension pulsation real-time monitoring and controlling system of scraper conveyor |
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