CN105424761A - Toothed belt detection device and method and variable pitch device - Google Patents
Toothed belt detection device and method and variable pitch device Download PDFInfo
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- CN105424761A CN105424761A CN201510901826.XA CN201510901826A CN105424761A CN 105424761 A CN105424761 A CN 105424761A CN 201510901826 A CN201510901826 A CN 201510901826A CN 105424761 A CN105424761 A CN 105424761A
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- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title abstract description 9
- 239000000523 sample Substances 0.000 claims description 24
- 239000004020 conductor Substances 0.000 claims description 23
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 18
- 238000007689 inspection Methods 0.000 claims description 14
- 230000004308 accommodation Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 abstract description 10
- 238000012544 monitoring process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/01—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/01—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance
- F16H2057/014—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance of friction elements in transmissions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/01—Monitoring wear or stress of gearing elements, e.g. for triggering maintenance
- F16H2057/018—Detection of mechanical transmission failures
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention provides a tooth-shaped belt detection device and method and a pitch control device. Be provided with at least one wire in the toothed belt, toothed belt detection device includes: and the resistance detector is electrically connected with the metal wire and is used for detecting the resistance value of the metal wire and judging the on-off of the metal wire according to the resistance value. The tooth belt detection device can conveniently and quickly detect the tooth belt.
Description
Technical field
The present invention relates to wind power generating set security detection equipment field, particularly relate to a kind of cog belt pick-up unit and method, vane change device.
Background technology
Cog belt is the driving-belt of a kind of workplace with tooth-shape structure, and it utilizes band tooth and tooth mesh transmission to move force and motion.Cog belt, by the gearing as wind generating set pitch control system, compares the pitch-controlled system utilizing gear as gearing, and the advantage adopting the pitch-controlled system of cog belt is stable drive, noise is little, maintenance is simple, convenient and cost is lower.But the load-bearing capacity of cog belt is limited, when bearing that comparatively strong wind carries, easily rupture, if cog belt ruptures, then blade is under inertia effect, can, around pitch variable bearings rotation, cause blade to sweep the major accidents such as tower.
Current industry lacks the means of carrying out for a long time the on off operating mode of the pitch-controlled system internal tooth form band of wind power generating set, automatically monitoring.
Summary of the invention
Embodiments of the invention provide a kind of cog belt pick-up unit and method, vane change device, to solve in existing wind power generating set the equipment problem that causes security low not detecting cog belt fracture.
For achieving the above object, embodiments of the invention provide a kind of cog belt pick-up unit, at least one tinsel is provided with in cog belt, cog belt pick-up unit comprises: resistance detector, resistance detector is electrically connected with tinsel, and detect resistance value wiry, judge break-make wiry according to resistance value.
Further, many wire are provided with in cog belt, cog belt pick-up unit also comprises two connectors, two connectors are fixedly installed on the two ends of cog belt, and can be connected conductively with the tinsel of cog belt, many wire of cog belt are connected into a conductor, and resistance detector is connected with tinsel by connector.
Further, be provided with many wire in cog belt, cog belt pick-up unit also comprises: connector, and connector is fixedly installed on the first end of cog belt, and converges to a node after can being connected conductively with the tinsel of cog belt; Change-over switch, change-over switch is connected to the second end of cog belt, and is switchably connected with tinsel, and one end of resistance detector is connected with change-over switch, the Node connectedness that the other end of resistance detector and connector converge, change-over switch controls the tinsel be connected with resistance detector.
Further, connector comprises: pedestal, and pedestal has the spatial accommodation of the end holding cog belt; Multiple conducting probe, multiple conducting probe is fixedly installed on pedestal, and stretches in spatial accommodation, and conducting probe is corresponding with many wire of cog belt to be arranged and can connect conductively.
Further, pedestal comprises top board and is interval in top board and is fixedly connected on the lower platen on top board, and top board and/or lower platen are provided with the teeth groove section coordinated with cog belt.
Further, every two of multiple conducting probes of connector are one group, often organize conducting probe and are connected by conduction contiguous block.
Further, cog belt pick-up unit also comprises self-test switch, and self-test switch is in parallel with cog belt, and controls whether short circuit cog belt.
Further, cog belt pick-up unit also comprises alarm, and alarm is connected with resistance detector, and reports to the police by the control of resistance detector.
According to a further aspect in the invention, provide a kind of cog belt detection method, it comprises the steps: the tinsel of cog belt to be connected with resistance detector; Tinsel to cog belt is powered and is detected resistance value wiry, judges break-make wiry according to resistance value.
Further, before the step be connected with resistance detector by the tinsel of cog belt, also comprise step: closed self-test switch, by cog belt short circuit, power supply self-inspection, and control to report to the police or cog belt is connected with resistance detector according to self-detection result.
According to a further aspect in the invention, provide a kind of vane change device, the cog belt pick-up unit comprising cog belt and be connected with cog belt, cog belt pick-up unit is above-mentioned cog belt pick-up unit.
The cog belt pick-up unit of embodiments of the invention can detect the break-make wiry of cog belt, and then can detect cog belt and whether have fracture, and structure is simple, detects reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of cog belt;
Fig. 2 is the end to end structural representation of tinsel of cog belt;
Fig. 3 is the structural representation of the cog belt pick-up unit of the first embodiment of the present invention;
Fig. 4 is the structural representation of the cog belt pick-up unit of the second embodiment of the present invention;
Fig. 5 is the structural representation of the connector removal top board of the cog belt pick-up unit of the first embodiment of the present invention;
Fig. 6 is the side view of the connector of the cog belt pick-up unit of the first embodiment of the present invention.
Description of reference numerals:
11, resistance detector; 12, self-test switch; 20, connector; 21, pedestal; 211, top board; 212, lower platen; 213, teeth groove section; 214, bolt; 22, conducting probe; 23, conduction contiguous block; 30, change-over switch; 90, cog belt; 91, tinsel.
Embodiment
Below in conjunction with accompanying drawing, the cog belt pick-up unit of the embodiment of the present invention and method, vane change device are described in detail.
Embodiment one
As shown in Figure 1, the rubber that the cog belt 90 used in the vane change device of wind power generating set generally includes tinsel 91 and is wrapped in outside tinsel 91.The effect of the tinsel 91 in cog belt 90 is the intensity improving cog belt 90, prevents cog belt 90 from rupturing, and improves the serviceable life of cog belt 90.
In the present invention, utilize the conductive characteristic of tinsel 91 to detect tinsel 91 and whether rupture, if tinsel 91 ruptures, illustrate that cog belt 90 ruptures at least partly, need repair and replacement, realize the detection to cog belt 90 thus.
When detecting the tinsel 91 of cog belt 90, can detect separately every one metal wire 91, also all tinsels 91 successively head and the tail can be connected into a conductor (as shown in Figure 2) and detecting.
Certainly, cog belt pick-up unit of the present invention can also be applied to the detection that other have driving-belt wiry.
As shown in Figure 3, according to embodiments of the invention, cog belt pick-up unit comprises resistance detector 11, during detection, tinsel 91 is connected with resistance detector 11, detected by the resistance of resistance detector 11 pairs of tinsels 91, if the resistance value of the tinsel detected 91 is greater than predetermined value, then represent that tinsel 91 ruptures; If the resistance value of the tinsel detected 91 is less than predetermined value, then represent that tinsel 91 does not rupture.(on-line monitoring refers to the monitoring periods according to agreement to adopt this cog belt pick-up unit can realize carrying out on-line monitoring to cog belt 90, regularly monitoring automatically), can detect at the initial stage that cog belt 90 damages, effectively prevent cog belt 90 from rupturing completely, and then avoid wind power generating set fault, reduce loss.
Technological thought of the present invention is:
By detecting the resistance value of the tinsel 91 (such as steel wire) in cog belt 90, and judge the break-make of tinsel 91 according to resistance value, and then judge the crack conditions of cog belt 90, detect reliable, fast.
In the present embodiment, the many wire 91 arranged in cog belt 90 head and the tail are connected into a conductor, and measures.
Particularly, cog belt pick-up unit also comprises two connectors 20, two connectors 20 are fixedly installed on the two ends of cog belt 90 correspondingly, and can be connected conductively with the tinsel 91 of cog belt 90, so that the tinsel 91 of cog belt 90 is connected into a conductor (connected mode as shown in Figure 2).Resistance detector 11 passes through the two ends of connector 20 and conductor (in the present embodiment, the two ends of conductor are all positioned at the side of cog belt 90, therefore resistance detector 11 is connected with cog belt 90 by a connector 20, if the two ends of conductor are positioned at the two ends of cog belt 90, then resistance detector 11 is connected with cog belt 90 by two connectors 20) be electrically connected.Like this when detecting, resistance detector 11 can detect the resistance value of conductor, and judges whether the tinsel 91 forming conductor has fracture according to the resistance value detected.If tinsel 91 is without fracture, the resistance value then measured is that (resistance value of usual single metal wire 91 is relevant with specification with the material of tinsel 91 for the resistance value of conductor itself, be generally 30 ohm to 40 ohm, the quantity of the tinsel 91 that resistance value and its of conductor comprise is relevant, and the quantity that conductor resistance value approximates tinsel 91 is multiplied by the resistance value of single metal wire 91); If any one fracture in tinsel 91, then the resistance value convergence infinity (being generally 9948 ohm to 9999 ohm) measured.
As shown in Figure 5 and Figure 6, connector 20 comprises pedestal 21 and multiple conducting probe 22.
Pedestal 21, for installing miscellaneous part such as conducting probe 22 grade, simultaneously for being fixedly connected with cog belt 90, to ensure that conducting probe 22 can reliably be connected with tinsel 91, and then ensures the reliability of detection.Pedestal 21 has the spatial accommodation of end holding cog belt 90, and cog belt 90 to stretch in this spatial accommodation and is fixed in pedestal 21.
Particularly, pedestal 21 comprises top board 211 and is interval in top board 211 and is fixedly connected on the lower platen 212 on top board 211.Being fastenedly connected by bolt 214 between top board 211 and lower platen 212, and cog belt 90 is clamped, when guaranteeing reliably to fix cog belt 90, avoiding destroying cog belt 90.
Certainly, in other embodiments, pedestal 21 can be other structures, as long as can reliably fix cog belt 90.
Preferably, top board 211 and/or lower platen 212 are provided with the teeth groove section 213 coordinated with cog belt 90.In cog belt 90 course of work, cog belt 90 needs to bear the power such as pretightning force and friction force, for preventing these power, cog belt 90 is separated with pedestal 21, thus teeth groove section 213 is set on top board 211 and/or lower platen 212, teeth groove section 213 can be engaged with the tooth of cog belt 90, improves connection reliability.In the present embodiment, lower platen 212 is provided with this teeth groove section 213.
Conducting probe 22 is fixedly installed on the lower platen 212 of pedestal 21, and stretches in spatial accommodation, so that conducting probe 22 can be connected accordingly with the tinsel 91 of cog belt 90.Such as, each conducting probe 22 is all connected with an one metal wire 91, and as required two conducting probes 22 are linked together, tinsel 91 is made to form conductor, then one end of resistance detector 11 is connected with the conducting probe 22 being positioned at conductor one end, and the other end of resistance detector 11 is connected with the conducting probe 22 being positioned at the conductor other end.
Certainly, also can omit the conducting probe 22 be connected with the end of conductor, resistance detector 11 is directly connected with the end of conductor.
In order to the tinsel 91 of cog belt 90 being connected, every two of the conducting probe 22 of connector 20 is one group, often organizes conducting probe 22 and is connected by conduction contiguous block 23.Many one metal wires 91 in cog belt 90 can be coupled together like this, finally realize all tinsels 91 and be connected to become a conductor.Shown in Figure 3, cog belt pick-up unit also comprises self-test switch 12.It is for carrying out self-inspection to cog belt pick-up unit, to ensure detection accuracy.
Resistance detector 11 is mainly used in judging whether tinsel 91 ruptures.When testing, resistance detector 11 detects the resistance of tinsel 91, and judges the break-make of the tinsel 91 of cog belt 90.Preferably, resistance detector 11 can adopt PLC (Programmable Logic Controller).Certainly, in other embodiments, resistance detector 11 can be single-chip microcomputer or computing machine or multimeter or other can realize the device that detects.
The effect of self-test switch 12 first detected cog belt pick-up unit before detecting cog belt 90, guaranteeing to detect cog belt 90 in the trouble-free situation of cog belt pick-up unit, to ensure to detect reliably.Self-test switch 12 is in parallel with cog belt 90, and controls whether short circuit cog belt 90.During self-inspection, closed by self-test switch 12, cog belt 90 is shorted, the self-inspection of cog belt pick-up unit, if self-inspection non-fault, is disconnected by self-test switch 12, is accessed by cog belt 90, detect it.Staff if self-inspection has fault, reports to the police, so that can keep in repair in time.
Cog belt pick-up unit also comprises alarm, and alarm is connected with resistance detector 11, and reports to the police by the control of resistance detector 11.When the self-inspection of cog belt pick-up unit is out of order or is detected that tinsel 91 ruptures, resistance detector 11 controls alarm equipment alarm, to notify that staff keeps in repair in time, to ensure security of operation.Alarm can be loudspeaker, warning lamp etc., and also can be the display screen be connected with resistance detector 11, the resistance value etc. that resistance detector 11 controls display screen display alarm information and detects, so that staff checks.This alarm can be the alarm of wind power generating set, and need not arrange alarm separately.
According to a further aspect in the invention, provide a kind of cog belt detection method, the method is detected cog belt by above-mentioned cog belt pick-up unit, and the method comprises the steps:
The tinsel 91 of cog belt 90 is connected with resistance detector 11;
Tinsel 91 to cog belt 90 is powered and is detected the resistance value of tinsel 91.Break-make wiry is judged according to resistance value.The break-make of tinsel 91 can be judged by detecting the resistance value of tinsel 91, and then can judge whether cog belt 90 exists the situation of cracking or fracture, this kind of detection method simple and fast and reliability is high.
Preferably, for ensureing detecting reliability, before the step be connected with resistance detector 11 by the tinsel 91 of cog belt 90, also step is comprised:
Open self-test switch 12, by cog belt 90 short circuit, power supply self-inspection, and control to report to the police or the tinsel 91 of cog belt 90 is connected with resistance detector 11 according to self-detection result.Before carrying out tinsel 91 detection, carrying out self-inspection can ensure detecting reliability.
According to a further aspect in the invention, provide a kind of vane change device, the cog belt pick-up unit that this vane change device comprises cog belt 90 and is connected with cog belt 90, this cog belt pick-up unit is above-mentioned cog belt pick-up unit.
The course of work adopting cog belt pick-up unit to detect cog belt 90 is as follows:
Connector 20 is fixedly connected on cog belt 90, all tinsels 91 in cog belt 90 to be connected to become a complete conductor.Be connected with connector 20 by resistance detector 11, make it be connected with tinsel 91, the conductor utilizing resistance detector 11 pairs of tinsels 91 to form carries out resistance value detection.
The every 10s of resistance detector 11 detects (second) break-make of a cog belt 90.Before tinsel 91 is detected, open self-test switch 12, by tinsel 91 short circuit, whether resistance detector 11 controls cog belt pick-up unit self-inspection circuit normal, if circuit is normal, then carries out cog belt detection, if circuit is abnormal, stops cog belt detecting, and report to the police.
After resistance detector 11 self-inspection is normal, self-test switch 12 is closed, and is accessed by tinsel 91, and resistance detector 11 detects the resistance value of conductor, and judges whether conductor has fracture according to resistance value.If detection resistance value is greater than predetermined value, then there is fracture in tinsel 91, and namely cog belt exists crack conditions, information is sent to the master control system of wind power generating set, controls wind power generating set stoppage protection, and report to the police.If the resistance value detected is not more than predetermined value, then tinsel 91 is without fracture, and namely cog belt is without fracture, and Detection Information is imported into the master control system of wind power generating set by resistance detector 11, so that staff checks.
This cog belt pick-up unit and the kinematic train of method to the rotary part of wind power generating set is adopted to monitor, can give the alarm before cog belt 90 ruptures completely, prevent from rupturing the secondary failure caused due to cog belt 90, as leaf destruction, blade sweeps tower etc.
Self-test switch 12 is mainly used in tinsel 91 to cut out, and makes resistance detector 11 carry out self-inspection to the measurement circuit except tested cog belt, ensures that it is normal, eliminates the erroneous judgement due to the introducing of cog belt pick-up unit fault.
Embodiment two
As shown in Figure 4, in the present embodiment, the first end except cog belt 90 is fixedly installed connector 20, and the second end of cog belt 90 connects outside change-over switch 30, and other are all identical with embodiment one, therefore again repeat no more.
In the present embodiment, the conducting probe 22 of connector 20 is corresponding with the tinsel 91 of cog belt 90 to be connected, and connects into a node, and change-over switch 30 is switchably connected with tinsel 91, with the tinsel 91 that controlling resistance detecting device 11 detects, realize the independent test to tinsel 91.
One end of resistance detector 11 is connected with change-over switch 30, the Node connectedness that the other end and connector 20 converge out.Utilize change-over switch 30 to control the tinsel 91 be connected with resistance detector 11, to carry out single detection to tinsel 91, detect the position being conducive to determining the tinsel 91 ruptured like this.
During detection; resistance detector 11 controls change-over switch 30; successively the every one metal wire 91 in cog belt 90 is connected with resistance detector 11 respectively as wire; resistance detector 11 pairs of tinsels 91 detect by root; if certain one metal wire 91 resistance value exceedes predetermined value, then to control trouble light bright for resistance detector 11, then this tinsel 91 ruptures; the signal of fault is passed to master control system by resistance detector 11, controls wind power generating set and shuts down.
Cog belt pick-up unit of the present invention has following effect:
The wiry resistance value of this cog belt pick-up unit to cog belt detects, and judges break-make wiry according to resistance value, and this kind of detection mode is simple, facilitates and reduces detection difficulty;
Being connected by the tinsel of cog belt is one whole, detects quicker;
Cog belt pick-up unit is split type structure, and resistance detector is only connected with one end of cog belt and can realizes detecting, and thus facilitates and installs at rotary part;
It can self-inspection, detects more reliable.
Above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (11)
1. a cog belt pick-up unit, is provided with at least one tinsel (91), it is characterized in that in cog belt (90), described cog belt pick-up unit comprises:
Resistance detector (11), described resistance detector (11) is electrically connected with described tinsel (91), and detect the resistance value of described tinsel (91), the break-make of described tinsel (91) is judged according to described resistance value.
2. cog belt pick-up unit according to claim 1, it is characterized in that, many wire (91) are provided with in described cog belt (90), described cog belt pick-up unit also comprises two connectors (20), described two connectors (20) are fixedly installed on the two ends of described cog belt (90), and can be connected conductively with the tinsel (91) of described cog belt (90), many wire (91) of described cog belt (90) are connected into a conductor, described resistance detector (11) is connected with described tinsel (91) by described connector (20).
3. cog belt pick-up unit according to claim 1, is characterized in that, is provided with many wire (91) in described cog belt (90), and described cog belt pick-up unit also comprises:
Connector (20), described connector (20) is fixedly installed on the first end of described cog belt (90), and converges to a node after can being connected conductively with each tinsel (91) of described cog belt (90);
Change-over switch (30), described change-over switch (30) is connected to the second end of described cog belt (90), and be switchably connected with described tinsel (91), one end of described resistance detector (11) is connected with described change-over switch (30), the Node connectedness that the other end of described resistance detector (11) and described connector (20) converge, described change-over switch (30) controls the tinsel (91) be connected with described resistance detector (11).
4. the cog belt pick-up unit according to Claims 2 or 3, is characterized in that, described connector (20) comprising:
Pedestal (21), described pedestal (21) has the spatial accommodation of the end holding described cog belt (90);
Multiple conducting probe (22), described multiple conducting probe (22) is fixedly installed on described pedestal (21), and stretch in described spatial accommodation, described multiple conducting probe (22) is corresponding with many wire (91) of described cog belt (90) to be arranged and can connect conductively.
5. cog belt pick-up unit according to claim 4, it is characterized in that, described pedestal (21) comprises top board (211) and is interval in described top board (211) and is fixedly connected on the lower platen (212) on described top board (211), and described top board (211) and/or described lower platen (212) are provided with the teeth groove section (213) coordinated with described cog belt (90).
6. cog belt pick-up unit according to claim 4, it is characterized in that, every two of multiple conducting probes (22) of described connector (20) are one group, often organize conducting probe (22) and are connected by conduction contiguous block (23).
7. cog belt pick-up unit according to claim 1, it is characterized in that, described cog belt pick-up unit also comprises self-test switch (12), described self-test switch (12) is in parallel with described cog belt (90), and controls cog belt (90) described in whether short circuit.
8. cog belt pick-up unit according to claim 7, it is characterized in that, described cog belt pick-up unit also comprises alarm, and described alarm is connected with described resistance detector (11), and reports to the police by the control of described resistance detector (11).
9. a cog belt detection method, is characterized in that, comprises the steps:
The tinsel (91) of cog belt (90) is connected with resistance detector (11);
Tinsel (91) to described cog belt (90) is powered and detects the resistance value of described tinsel (91), judges the break-make of described tinsel (91) according to described resistance value.
10. cog belt detection method according to claim 9, is characterized in that, before the step be connected with resistance detector (11) by the tinsel (91) of cog belt (90), also comprise step:
Closed self-test switch (12), by described cog belt (90) short circuit, power supply self-inspection, and control to report to the police or described cog belt (90) is connected with described resistance detector (11) according to self-detection result.
11. 1 kinds of vane change devices, it is characterized in that, the cog belt pick-up unit comprising cog belt (90) and be connected with described cog belt (90), the cog belt pick-up unit of described cog belt pick-up unit according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510901826.XA CN105424761B (en) | 2015-12-08 | 2015-12-08 | Toothed belt detection device and method and variable pitch device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510901826.XA CN105424761B (en) | 2015-12-08 | 2015-12-08 | Toothed belt detection device and method and variable pitch device |
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| CN105424761A true CN105424761A (en) | 2016-03-23 |
| CN105424761B CN105424761B (en) | 2019-01-29 |
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| CN201510901826.XA Active CN105424761B (en) | 2015-12-08 | 2015-12-08 | Toothed belt detection device and method and variable pitch device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561126A (en) * | 2017-09-30 | 2018-01-09 | 万力轮胎股份有限公司 | A kind of band beam leakage silk detection means |
| CN107816415A (en) * | 2017-09-18 | 2018-03-20 | 新疆金风科技股份有限公司 | Cog belt monitoring method and device, the pitch drive system of wind power generating set |
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| CN107561126A (en) * | 2017-09-30 | 2018-01-09 | 万力轮胎股份有限公司 | A kind of band beam leakage silk detection means |
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