CN104670815A - Method for adjusting tension of belt of coal feeder - Google Patents
Method for adjusting tension of belt of coal feeder Download PDFInfo
- Publication number
- CN104670815A CN104670815A CN201510011957.0A CN201510011957A CN104670815A CN 104670815 A CN104670815 A CN 104670815A CN 201510011957 A CN201510011957 A CN 201510011957A CN 104670815 A CN104670815 A CN 104670815A
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- CN
- China
- Prior art keywords
- belt
- tension
- feeder
- speed
- tensile force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- B65G2812/00—Indexing codes relating to the kind or type of conveyors
- B65G2812/02—Belt or chain conveyors
- B65G2812/02128—Belt conveyors
- B65G2812/02138—Common features for belt conveyors
Abstract
The invention discloses a method for adjusting tension of a belt of a coal feeder. The method is characterized by including the steps of determining theoretical tension of the belt; measuring a speed ratio; calculating belt speed; calculating belt tension direction and adjustment quantity; after the coal feeder passes adjusting and weighing precision verification and when all parts run in a qualified state, determining that the tension of the belt of the coal feeder is qualified and corresponds to the belt speed, and measuring the running speed of the belt as qualified theoretical belt tension of the coal feeder; after the coal feeder runs for a period of time and when the tension of the belt changes and needs to be adjusted, according to calculating results of the belt speed, adjusting the tension of the belt to the range of theoretical belt tension so as to finish adjusting the tension of the belt of the coal feeder. The method has the advantages that calculation of the direction and magnitude of the tension of the belt is visualized, calculating is simple and operability is high.
Description
Technical field
The present invention relates to a kind of control method of feeder belt tension, belong to the technical field of feeder belt tension control method.
Background technology
The application force that belt running resistance, belt and quality of material cause and the circumferential force acted on all driving drums are the tensile force of belt.Belt is the critical component of feeder conveying coal charge, because break-in in varying with temperature and using, the tensile force such as aging can change to some extent, the size of tensile force also can affect the weight by obtaining belt alleged by Weighing mechanism, the belt tension crossing pine can cause belt in running condition to skid, and causes transmission failure.The belt tension of tension also can reduce the service life of belt and accelerate the wearing and tearing of bearing.Unsuitable tensile force finally can have influence on the weighing precision of feeder entirety.The feeder of 0.5 grade of measurement instrument, its belt is on feeder body, install a pair driving drum, passive cylinder, and belt is outside two cylinders, and whether belt tension is appropriate particularly important.Feeder drive belt is as rubber product, and the tensile force of belt can with feeder internal temperature, pressure size and transmission time length and change, and affects the many factors of tensile force, so the work of adjusting tensioning force of belt is also more frequent in routine.The main subjective determination artificially of the adjustment of belt tension in the past, the accuracy of the control method of this dependence experience, conformability and operability are not high, owing to not having referential standard and related specifications in control process, often there is deviation so regulate.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method of accurate adjustment feeder belt tension, under feeder running state, also can adjust suitable belt tension.
In order to solve the problem, the invention provides a kind of control method of feeder belt tension, it is characterized in that, comprising following concrete steps:
Step 1): determine the theoretical tensile force of belt: belt tension (F1) is the pilled-in selvedge tension force of belt on belt transmission roller, when belt sag is elongated, tensile force diminishes or belt sag diminishes, and when tensile force becomes large, now needs the tensile force tuning up belt;
Determine the theoretical tensile force of belt, feeder debugging and precision checking qualified after, the tensile force of belt is qualified tensile force, is theoretical tensile force, and theoretical tensile force is corresponding with belt speed, and namely theoretical tensile force equals the belt speed V that records
band;
Step 2): record speed ratio: on belt, stick reflective sheeting when surely spending, run feeder and surely spend degree, by degree of determining hole, utilize given degree probe to record speed ratio, speed ratio is belt speed and the ratio of motor speed, and its theoretical formula is:
Wherein, R: speed ratio, D: feeder drive wheel diameter, Δ: thickness of belt, n: retarder reduction ratio;
Step 3): calculate belt speed:
When feeder is spent surely, can be recorded the actual speed of motor by the holes probe installed at motor internal, when surely spending, motor speed is set as a constant tachometer value, calculates belt speed V by speed ratio
band, its computing formula is as follows:
Step 4): calculate belt tension force direction and regulated quantity: when needs again adjusting tensioning force of belt time, again record belt speed (V
band'), utilize error calculation to go out the direction of belt tension adjustment; Utilize regulated quantity computing formula, calculate the regulated quantity that belt needs to regulate, regulate direction and regulated quantity according to belt, the tensile force of adjustment belt, completes adjustment;
Calculate belt tension and regulate direction, regulate direction to be adjust pine or tighten, utilize error calculation formula:
Error=indicating value-theoretical value
=V
band'-V
band;
When errors value is negative, adjust loose feeder belt tension; When error amount is positive number, tighten feeder belt tension.After adjustment belt tension, calculate belt adjustment amount Δ, can obtain belt tension adjusting size intuitively, computing formula is:
Wherein, Δ: belt adjustment amount, L: feeder width between centers length;
Feeder complete debugging and weighing precision verification qualified after, each parts are all in qualified mode of operation, the belt tension size of feeder is also in qualified scope, belt tension and belt speed have correspondence, record the running velocity of belt at this moment, as the qualified theoretical belt tension of feeder; Feeder is after operation a period of time, and belt tension changes, and when needing tension adjusting, by the result of calculation of belt speed, is adjusted to by belt tension within the scope of theoretical belt tension force value, namely completes the adjustment of feeder belt tension.
The present invention is by calculating the variable quantity of feeder belt speed, adjustment direction and the adjustment amount of belt can be calculated, thus carry out the adjustment of feeder belt tension intuitively, avoid the slipping of the belt because belt tension nonconformity causes, the final weighing precision affecting feeder, ensure even, the accurate coal supply of feeder, qualified belt tension also can extend the service life of belt.Due to adjustment and the feeder real-world operation state consistency of belt tension, so adjustment is more accurate, and there is operability.The method is also applicable to the adjustment of the belt tension of all kinds of belt gear.
Accompanying drawing explanation
Fig. 1 acts on the tensile force on belt;
Fig. 2 is that feeder forms and surely spends schematic diagram;
Fig. 3 is belt tension variation diagram;
The theoretical qualified belt tension schematic diagram of Fig. 4 feeder;
Fig. 5 tightens belt tension schematic diagram;
Fig. 6 adjusts loose belt tension schematic diagram.
Detailed description of the invention
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment
A control method for feeder belt tension, concrete steps are as follows:
1, the theoretical tensile force of belt is determined
As shown in Figure 1, belt tension F
1be the pilled-in selvedge tension force of belt on belt transmission roller 5.
Feeder operation a period of time after, belt tension F
1can change, as shown in Figure 3, belt tension F
1affect by factors such as own quality, ambient temperature, operation pressure and time of run length that belt 1 is, belt 1 sag can be elongated, and tensile force diminishes, and now needs the tensile force tuning up belt 1; On the contrary, belt 1 sag diminishes, and tensile force becomes large, needs to turn belt tension F down
1.
Determine the theoretical tensile force of belt, after feeder debugging and precision checking contract, the tensile force of belt 1 is qualified tensile force, is theoretical tensile force, and theoretical tensile force is corresponding with belt speed, and namely theoretical tensile force equals the belt speed V that records
band.
2, speed ratio is recorded
As shown in Figure 2, for electronic weighing type coal feeder, feeder body 4 is installed a pair driving drum 5, passive cylinder 6, belt 1, outside two cylinders, sticks reflective sheeting 3 when surely spending on belt 1, runs feeder and surely spends degree, by degree of determining hole 2, utilize given degree probe to record speed ratio, speed ratio is belt 1 speed and the ratio of motor speed, and its theoretical formula is:
Wherein, R: speed ratio, D: feeder drive wheel diameter, Δ: thickness of belt, n: retarder reduction ratio;
3, belt speed is calculated
When feeder is spent surely, can be recorded the actual speed of motor by the holes probe installed at motor internal, when surely spending, motor speed is set as a constant tachometer value, calculates belt speed V by speed ratio
band, its computing formula is as follows:
4, belt tension force direction and regulated quantity is calculated,
When needs again adjusting tensioning force of belt time, again record belt speed V
band', utilize error calculation to go out the direction of belt tension adjustment; Utilize regulated quantity computing formula, calculate the regulated quantity that belt needs to regulate, regulate direction and regulated quantity according to belt, the tensile force of adjustment belt, completes adjustment.
Calculate belt tension and regulate direction, regulate direction to be adjust pine or tighten, utilize error calculation formula:
Error=indicating value-theoretical value
=V
band'-V
band
When errors value is negative, adjust loose feeder belt tension; When error amount is positive number, tighten feeder belt tension.After adjustment belt tension, as shown in figs. 4 through 6, calculate belt adjustment amount Δ, can obtain belt tension adjusting size intuitively, computing formula is the change of feeder belt tension:
Wherein, Δ: belt adjustment amount, L: feeder width between centers length.
Feeder complete debugging and weighing precision verification qualified after, each parts are all in qualified mode of operation, the belt tension size of feeder is also in qualified scope, belt tension and belt speed have correspondence, record the running velocity of belt at this moment, as the qualified theoretical belt tension of feeder; Feeder is after operation a period of time, and belt tension changes, and when needing tension adjusting, by the result of calculation of belt speed, is adjusted to by belt tension within the scope of theoretical belt tension force value, namely completes the adjustment of feeder belt tension.
Claims (1)
1. a control method for feeder belt tension, is characterized in that, comprises following concrete steps:
Step 1): determine the theoretical tensile force of belt: belt tension (F
1) be the pilled-in selvedge tension force that driving drum (5) goes up belt (1), when belt (1) sag is elongated, tensile force diminishes or belt (1) sag diminishes, and when tensile force becomes large, now needs the tensile force tuning up belt (1);
Determine the theoretical tensile force of belt, feeder debugging and precision checking qualified after, the tensile force of belt is qualified tensile force, is theoretical tensile force, and theoretical tensile force is corresponding with belt (1) speed, and namely theoretical tensile force equals the belt speed V that records
band;
Step 2): record speed ratio: when surely spending, on belt (1), stick reflective sheeting (3), run feeder and surely spend degree, by degree of determining hole (2), utilize given degree probe to record speed ratio, speed ratio is belt speed and the ratio of motor speed, and its theoretical formula is:
Wherein, R: speed ratio, D: feeder drive wheel diameter, Δ: thickness of belt, n: retarder reduction ratio;
Step 3): calculate belt speed:
When feeder is spent surely, can be recorded the actual speed of motor by the holes probe installed at motor internal, when surely spending, motor speed is set as a constant tachometer value, calculates belt speed V by speed ratio
band, its computing formula is as follows:
Step 4): calculate belt tension force direction and regulated quantity: when needs regulate belt (1) tensile force again, again record belt speed (V
band'), utilize error calculation to go out the direction of belt (1) tensioning adjustment; Utilize regulated quantity computing formula, calculate the regulated quantity that belt needs to regulate, regulate direction and regulated quantity according to belt, the tensile force of adjustment belt, completes adjustment;
Calculate belt tension and regulate direction, regulate direction to be adjust pine or tighten, utilize error calculation formula:
Error=indicating value-theoretical value
=V
band'-V
band;
When errors value is negative, adjust loose feeder belt tension; When error amount is positive number, tighten feeder belt tension.After adjustment belt tension, calculate belt adjustment amount Δ, can obtain belt tension adjusting size intuitively, computing formula is:
Wherein, Δ: belt adjustment amount, L: feeder width between centers length;
Feeder complete debugging and weighing precision verification qualified after, each parts are all in qualified mode of operation, the belt tension size of feeder is also in qualified scope, belt tension and belt speed have correspondence, record the running velocity of belt at this moment, as the qualified theoretical belt tension of feeder; Feeder is after operation a period of time, and belt tension changes, and when needing tension adjusting, by the result of calculation of belt speed, is adjusted to by belt tension within the scope of theoretical belt tension force value, namely completes the adjustment of feeder belt tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510011957.0A CN104670815A (en) | 2014-12-26 | 2015-01-09 | Method for adjusting tension of belt of coal feeder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851854 | 2014-12-26 | ||
| CN2014108518540 | 2014-12-26 | ||
| CN201510011957.0A CN104670815A (en) | 2014-12-26 | 2015-01-09 | Method for adjusting tension of belt of coal feeder |
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|---|---|
| CN104670815A true CN104670815A (en) | 2015-06-03 |
Family
ID=53306505
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510011957.0A Pending CN104670815A (en) | 2014-12-26 | 2015-01-09 | Method for adjusting tension of belt of coal feeder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105417014A (en) * | 2015-12-02 | 2016-03-23 | 中国神华能源股份有限公司 | Full-automatic tensioning control system and method used for rubber belt machine |
| CN105889434A (en) * | 2016-05-17 | 2016-08-24 | 广西桂冠开投电力有限责任公司 | Stabilizing mechanism with transmission function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0490909A1 (en) * | 1989-09-06 | 1992-06-24 | Hamlin Transmission Corp | Self-positioning belt tensioner. |
| CN101726621A (en) * | 2008-10-15 | 2010-06-09 | 上海市离心机械研究所有限公司 | Rotary speed measuring device |
| CN102502186A (en) * | 2011-12-19 | 2012-06-20 | 上海发电设备成套设计研究院 | Adjusting method for belt tension of electronic weighing type coal feeder |
-
2015
- 2015-01-09 CN CN201510011957.0A patent/CN104670815A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0490909A1 (en) * | 1989-09-06 | 1992-06-24 | Hamlin Transmission Corp | Self-positioning belt tensioner. |
| CN101726621A (en) * | 2008-10-15 | 2010-06-09 | 上海市离心机械研究所有限公司 | Rotary speed measuring device |
| CN102502186A (en) * | 2011-12-19 | 2012-06-20 | 上海发电设备成套设计研究院 | Adjusting method for belt tension of electronic weighing type coal feeder |
Non-Patent Citations (1)
| Title |
|---|
| 大唐国际发电股份有限公司: "《火力发电厂辅控运行》", 31 July 2009, 中国电力出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105417014A (en) * | 2015-12-02 | 2016-03-23 | 中国神华能源股份有限公司 | Full-automatic tensioning control system and method used for rubber belt machine |
| CN105889434A (en) * | 2016-05-17 | 2016-08-24 | 广西桂冠开投电力有限责任公司 | Stabilizing mechanism with transmission function |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |
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