CN103470663B - Wear sensor for friction plate of fan yaw brake - Google Patents
Wear sensor for friction plate of fan yaw brake Download PDFInfo
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- CN103470663B CN103470663B CN201310412632.4A CN201310412632A CN103470663B CN 103470663 B CN103470663 B CN 103470663B CN 201310412632 A CN201310412632 A CN 201310412632A CN 103470663 B CN103470663 B CN 103470663B
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- microswitch
- housing
- push rod
- friction plate
- spring
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Abstract
The present invention relates to a kind of wind turbine component, in particular for the sensor that the friction plate of fan yaw brake degree of wear is measured.A kind of wear sensor for friction plate of fan yaw brake, comprise push rod, spring, housing, limited part, microswitch and wire, microswitch is arranged at enclosure interior, wire is electrically connected with microswitch and passes from shell one end, the transmission component of microswitch and push rod one end close contact, the push rod the other end passes housing; Push rod is fixedly connected with described push rod through described spring inner and spring one end away from microswitch; Limited part is fixedly installed on enclosure interior and between microswitch and spring, push rod is through the through hole that described limited part has, and through-hole diameter is less than described spring diameter, and spring is near one end of described microswitch and limited part close contact.Wire comprises two lines, and one is power line; Another root is signaling line, receives in the automatical control system of blower fan.
Description
Technical field
The present invention relates to a kind of wind turbine component, in particular for the sensor that the friction plate of fan yaw brake degree of wear is measured.
Background technique
Adopt the wind-driven generator of traditional double-fed generator (being called for short blower fan in the present invention), its working principle is: Wind power propelling blade rotates, thus the lower velocity shaft in impeller rotates.By a step-up gear, the high rotating speed needed for electrical power generators is brought up in the slow-speed of revolution of lower velocity shaft, thus drive electrical power generators.
Because the wind direction of wind field is constantly changing, in order to utilize wind energy efficiently, need aim at wind direction all the time when the blade rotor of blower fan operates, in blower fan, yaw system has been installed on tower cylinder top for this reason.Yaw system is as one of the important component part of blower fan control system, and its Main Function is exactly the operation conditions according to blower fan, correctly adjusts the direction windward of unit.
The hardware system of yaw system primarily of yaw motor, speed reducer, yaw motor electromagnetic brake, the composition such as off-course brake and cable sensor.Off-course brake is hydraulic disk, is provided the pressure of 140 ~ 160bar by hydraulic system, provides enough braking force.During driftage, hydraulic pressure discharges but keeps certain overbottom pressure, keeps certain damping torque in During yaw, thus reduces the impulsive load of blower fan in During yaw.
In the During yaw of wind-driven generator, under certain oil pressure, the two panels friction plate of off-course brake is clamped in yaw brake disc both sides and rotates relative to rubbing, and provides certain damping torque, but which results in the wearing and tearing of friction plate simultaneously.If operating mode is normal, friction plate material excellent, friction disc wear amount is very small, and the life-span of friction plate is very long, and the life-span of more than 5 years is all very common, and therefore the wear extent of friction plate is without the need to running check.
But because wind-driven generator may exist various problem, if any low precision, or fan design itself has problem, or a variety of causes such as driftage logic setup parameter is wrong, capital causes driftage friction plate to work under unusual service condition, cause friction plate sharp wear, in the short time by friction material mill to the greatest extent.If do not checked in time, abrasives mill its steel substrate rear to the greatest extent of friction plate directly will contact friction with brake disc, causes brake disc surface to be damaged.
Because wind-driven generator is arranged on remote field mostly, and cabin is positioned at the tower cylinder top of tens meters high, once brake disc damages, changing brake disc needs to lift whole cabin, and cost is very high.Therefore how checking the wearing and tearing of monitoring driftage friction plate, avoid the damage of brake disc, is a difficult problem in the urgent need to address for fan yaw system.
The friction disc wear of current observation and monitoring off-course brake mainly adopts friction disc wear indicating bar device:
As Fig. 1, friction plate comprises two-part, friction plate base plate 11(normally steel plate) and friction material flitch 12.Friction material flitch 12 contacts with brake disc 4.Friction disc wear indicating bar 2 is tightened on friction plate base plate 11 completely, and body Huo flat plan range C(braking state is clamped to brake calipers 5 in the top of friction disc wear indicating bar 2).
Working principle: along with the thickness 9 of friction material flitch 12 constantly weares and teares, the exposed portion C of friction disc wear indicating bar 2 can reduce always, and decrease is the wear extent of friction plate.When friction disc wear indicating bar 2 top and brake calipers 5 clamp average of body Huo concordant time, friction material flitch 12 is surplus 2mm also, represents and needs more renewal of facing renewal.
Friction disc wear indicating bar device Problems existing is as follows:
Friction disc wear indicating bar, just for manual observation, cannot accomplish Automatic Detection and Control.Because off-course brake is positioned at the cabin in tens meters of high-altitudes, attendant safeguards that the interval time of observation is longer, and some are had to the blower fan of unusual service condition, friction disc wear is fast, likely not by Timeliness coverage when may wear to the limit, thus brake disc surface is caused to damage.
Due to the relation of installing space, the friction disc wear indicating bar being arranged on the brake calipers on top is not easy to be observed.
Due to the existence of alignment error and the machining error of caliper shell thickness, cause the position of friction disc wear indicating bar own to have comparatively big error, accurately can not reflect friction plate actual wear value.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of at friction disc wear to can automatic alarm reliably during the limit, and safe and practical wear sensor for friction plate of fan yaw brake.
In order to realize foregoing invention object, the invention provides following technological scheme:
Wear sensor for friction plate of fan yaw brake, comprises push rod, spring, housing, limited part, microswitch and wire,
Described microswitch is arranged at described enclosure interior, and described wire is electrically connected with described microswitch and passes from shell one end;
The transmission component of described microswitch and described push rod one end close contact, the described push rod the other end passes housing;
Described push rod is fixedly connected with described push rod through described spring inner and described spring one end away from microswitch;
Described limited part is fixedly installed on enclosure interior and between described microswitch and described spring, described push rod is through the through hole that described limited part has, and, described through-hole diameter is less than described spring diameter, and described spring is near one end of described microswitch and described limited part close contact.
Wire comprises at least two lines, and one is power line connection 5-12V direct current; Another root is signaling line, receives in the automatical control system (such as PLC) of whole blower fan.
The transmission component of microswitch refers to that common form has push-piece, button, lever, roller etc. for triggering the part of microswitch on microswitch.External force can be transmitted to movable contact by transmission component, realizes movable contact and fixed contact quick-make or disconnection.
Described microswitch is Normally closed type micro limit switch.
Described limited part is circle with through hole or polygonal tabular.
Described housing comprises the first housing and the second housing that removably connect, and described first housing and the second housing are formed by the cylindrical or prismatic hollow tube that two sections of diameters are different,
When described first housing is connected with the second housing, the hollow tube that the hollow tube that described first diameter of the housing is larger is larger with the second diameter of the housing is connected.The Placement of the first housing and the second housing is convenient to dismantle housing, to mount and dismount the parts of enclosure interior.
Described enclosure interior is also provided with microswitch supporting portion, and described microswitch supporting portion and housing removably connect, and described microswitch perforating branches support part be coated on described microswitch in the middle part of outside and removably connect with it.Microswitch supporting portion can make microswitch position fix, and easily dismantles.
Wear sensor for friction plate of fan yaw brake of the present invention, has following beneficial effect:
1, reliable automatic alarm after really achieving off-course brake friction disc wear to the limit.Operator just can obtain this alarm signal in operating room, carry out manual observation without the need to the tower cylinder of climbing tens meters high.
2, Normally closed type micro limit switch is adopted.Because the working life of friction plate reaches several years, that is this switch all can not may be triggered in several years, and unexpected broken string easily appears in time content long like this.When broken string occurs, this normally closed signal is triggered warning, just can check out disconnection fault and get rid of in time.If use normal ON signal, once broken string can not be reported to the police, sensor failure, cannot fix a breakdown in advance, causes not reporting to the police during friction disc wear, cannot avoid accident.
3, wear sensor for friction plate of fan yaw brake of the present invention is arranged on brake calipers side, is conducive to winding displacement and avoids unexpected damaging.If be arranged on the back side, sensor is towards Ta Tong center, and personnel may touch up and down and damage sensor.
4, mechanical sensor reliability is high.And due to the mechanical isolation of microswitch and push rod, the automatical control system and brake disc of blower fan itself there is no to conduct electricity and are connected, avoid just in case be struck by lightning, damage to blower fan automatical control system in the situation such as short circuit.
5, compact structure, installing space is little.
6, structure is simple, and parts are few, and cost is low.
Accompanying drawing explanation
Fig. 1 is friction disc wear indicating bar device schematic diagram;
Fig. 2 is wear sensor for friction plate of fan yaw brake structural representation of the present invention;
Fig. 3 is wear sensor for friction plate of fan yaw brake scheme of installation of the present invention;
11 friction plate base plates, 12 friction material flitch, 2 friction disc wear indicating bars, 31 push rods, 32 springs, 33 housings, 331 first housings, 332 second housings, 34 limited parts, 35 microswitches, 351 microswitch supporting portions, 36 wires, 4 brake discs, 5 brake caliperss, 9 friction plate thickness, the top of C pad wearing and tearing indicating bar is to the brake calipers pincers flat plan range of body Huo (braking state).
Embodiment
As Fig. 3, Fig. 2, a kind of wear sensor for friction plate of fan yaw brake, comprise push rod 31, spring 32, housing 33, limited part 34, microswitch 35 and wire 36.
Housing 33 comprises the first housing 331 and the second housing 332. removably connected, and Placement can be threaded.First housing 331 and the second housing 332 are formed by the hollow tube of the different cylindrical or square column type of two sections of diameters.
When first housing 331 is connected with the second housing, the hollow tube that the hollow tube that the first shell 331 body diameter is larger is larger with the second housing 332 diameter is connected.So, during the items of housing 33 largest diameter, all parts of housing 33 inside that is easy for installation and removal.
Be provided with microswitch supporting portion 351 in housing 33, microswitch supporting portion 351 and housing removably connect, such as, connected by the link such as bolt, screw.And described microswitch perforating branches support part 351 be coated on described microswitch 35 in the middle part of outside and removably connect with it.Microswitch supporting portion 351 can make microswitch position fix, and easily dismantles.It is inner that microswitch 35 is arranged at housing 33.Wire 36 is electrically connected with microswitch 35 and passes from housing 33 one end.
Wire 36 comprises at least two lines, and one is power line, connects 5-12V direct current; Another root is signaling line, receives in the automatical control system (such as PLC) of whole blower fan.
The transmission component of microswitch 35 and push rod 31 one end close contact.Push rod 31 the other end passes housing 33, withstands on the side of friction plate base plate 11.
Inner and spring 32 is fixedly connected with push rod 31 away from one end of microswitch 35 through spring 32 for push rod 31.The object that spring 32 is connected with push rod 31 drives push rod 31 to move.
It is inner and between microswitch 35 and described spring 32 that limited part 34 is fixedly installed on housing 33.Limited part 34 is circle with through hole or polygonal tabular.The profile of limited part 34 depends on the inner cross-sectional shape of housing 33.
Push rod 31 is through the through hole that limited part 34 has, and through-hole diameter is less than spring 32 diameter, and spring 32 is near one end of microswitch 35 and limited part 34 close contact.
The limited portion 34 of spring 32 is blocked, and therefore spring 32 is the state being in compression in normal state.Only at friction disc wear to a certain extent, time friction plate base plate 11 is separated with push rod 31, spring 32 just flicks.
The transmission component of microswitch 35 refers to that common form has push-piece, button, lever, roller etc. for triggering the part of microswitch on microswitch.External force can be transmitted to movable contact by transmission component, realizes movable contact and fixed contact quick-make or disconnection.Microswitch 35 is Normally closed type micro limit switch.
As Fig. 3, machine off-course brake friction disc wear sensor is arranged on after on brake calipers 5, and one end of its push rod 31 withstands on microswitch 35, and the other end withstands on the side of friction plate base plate 11, and now spring 32 is compressed.
When friction plate not may wear to the limit, push rod 31 is pressed on friction plate base plate 11, and the stroke of microswitch 35 is compressed, and switch is in closed condition, provides normally closed signal.
When friction disc wear is to the limit, the base plate 11 of friction plate moves outward until depart from the top of push rod 31, and at this moment push rod 31 blocks without friction plate base plate 11, and spring 32 ejects push rod 31, microswitch 35 is triggered, provides the signal of switch opens.This switching signal access blower fan control system PLC, can be used for reporting to the police, represent that friction plate may wear to the limit, need to change.This signal also can be used for positive closing blower fan, to guarantee that the accident avoiding brake disc 4 to be worn occurs.
Claims (5)
1. a wear sensor for friction plate of fan yaw brake, is characterized in that, comprises push rod, spring, housing, limited part, microswitch and wire,
Described microswitch is arranged at described enclosure interior, and described wire is electrically connected with described microswitch and passes from shell one end;
The transmission component of described microswitch and described push rod one end close contact, the described push rod the other end passes housing;
Described push rod is fixedly connected with described push rod through described spring inner and described spring one end away from microswitch;
Described limited part is fixedly installed on described enclosure interior and between described microswitch and described spring, described push rod is through the through hole that described limited part has, and, described through-hole diameter is less than described spring diameter, and described spring is near one end of described microswitch and described limited part close contact;
Described wire at least comprises two lines, and one is power line, switches on power, and another root is signaling line, is linked in the automatical control system of whole blower fan.
2. wear sensor for friction plate of fan yaw brake according to claim 1, is characterized in that, described microswitch is Normally closed type micro limit switch.
3. wear sensor for friction plate of fan yaw brake according to claim 1 and 2, is characterized in that, described limited part is polygonal with through hole or circular plate-like shape.
4. wear sensor for friction plate of fan yaw brake according to claim 1 and 2, it is characterized in that, described housing comprises the first housing and the second housing that removably connect, and described first housing and the second housing are formed by the cylindrical or prismatic hollow tube that two sections of diameters are different
When described first housing is connected with the second housing, the hollow tube that the hollow tube that described first diameter of the housing is larger is larger with the second diameter of the housing is connected.
5. wear sensor for friction plate of fan yaw brake according to claim 1 and 2, it is characterized in that, described enclosure interior is also provided with microswitch supporting portion, described microswitch supporting portion and housing removably connect, and described microswitch perforating branches support part be coated on described microswitch in the middle part of outside and removably connect with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412632.4A CN103470663B (en) | 2013-09-11 | 2013-09-11 | Wear sensor for friction plate of fan yaw brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412632.4A CN103470663B (en) | 2013-09-11 | 2013-09-11 | Wear sensor for friction plate of fan yaw brake |
Publications (2)
| Publication Number | Publication Date |
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| CN103470663A CN103470663A (en) | 2013-12-25 |
| CN103470663B true CN103470663B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310412632.4A Active CN103470663B (en) | 2013-09-11 | 2013-09-11 | Wear sensor for friction plate of fan yaw brake |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895741B (en) * | 2015-06-10 | 2017-07-04 | 国家电网公司 | A kind of wind-driven generator composite braking system and braking method |
| CN106545600B (en) * | 2016-12-08 | 2019-03-15 | 北京金风科创风电设备有限公司 | Wind generating set and yaw braking device, braking system and braking method thereof |
| CN109538667B (en) * | 2018-12-19 | 2024-04-02 | 内蒙古北方重型汽车股份有限公司 | Oil-cooled multi-disc brake pad wear inspection device |
| CN110530251A (en) * | 2019-08-22 | 2019-12-03 | 射阳远景能源科技有限公司 | A kind of device and monitoring method of the thickness monitoring friction plate |
| CN111853102A (en) * | 2020-08-01 | 2020-10-30 | 沈荣华 | Wind-driven generator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678661A (en) * | 1995-04-07 | 1997-10-21 | Kia Motors Corporation | Brake lining abrasion detection device |
| US6272914B1 (en) * | 1998-08-05 | 2001-08-14 | Freni Brembo, S.P.A. | Device for indicating caliper pad wear in disc brakes |
| CN201106647Y (en) * | 2007-10-10 | 2008-08-27 | 浙江亚太机电股份有限公司 | Interstice self-adjusting device with abrasion alarm and automotive brake having the same |
| DE102010033563A1 (en) * | 2010-07-27 | 2012-02-02 | Stromag Wep Gmbh | Disc brake for rotating turret of wind-power plant, has indication unit that is provided in operative connection with wear detection element, to indicate wear state of friction lining |
| CN102817779A (en) * | 2011-04-26 | 2012-12-12 | 通用电气公司 | System for actively monitoring wear on wind turbine brake pads and related methods |
| CN202971687U (en) * | 2012-11-29 | 2013-06-05 | 贵州新安航空机械有限责任公司 | Wind generator brake with brake pad wear indicating device |
| CN203453353U (en) * | 2013-09-11 | 2014-02-26 | 开天传动技术(上海)有限公司 | Friction plate wear sensor for yaw brake of wind driven generator |
-
2013
- 2013-09-11 CN CN201310412632.4A patent/CN103470663B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678661A (en) * | 1995-04-07 | 1997-10-21 | Kia Motors Corporation | Brake lining abrasion detection device |
| US6272914B1 (en) * | 1998-08-05 | 2001-08-14 | Freni Brembo, S.P.A. | Device for indicating caliper pad wear in disc brakes |
| CN201106647Y (en) * | 2007-10-10 | 2008-08-27 | 浙江亚太机电股份有限公司 | Interstice self-adjusting device with abrasion alarm and automotive brake having the same |
| DE102010033563A1 (en) * | 2010-07-27 | 2012-02-02 | Stromag Wep Gmbh | Disc brake for rotating turret of wind-power plant, has indication unit that is provided in operative connection with wear detection element, to indicate wear state of friction lining |
| CN102817779A (en) * | 2011-04-26 | 2012-12-12 | 通用电气公司 | System for actively monitoring wear on wind turbine brake pads and related methods |
| CN202971687U (en) * | 2012-11-29 | 2013-06-05 | 贵州新安航空机械有限责任公司 | Wind generator brake with brake pad wear indicating device |
| CN203453353U (en) * | 2013-09-11 | 2014-02-26 | 开天传动技术(上海)有限公司 | Friction plate wear sensor for yaw brake of wind driven generator |
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| Publication number | Publication date |
|---|---|
| CN103470663A (en) | 2013-12-25 |
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