CN202833785U - Wind generating set yawing braking device with hydrostatic bearing - Google Patents
Wind generating set yawing braking device with hydrostatic bearing Download PDFInfo
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- CN202833785U CN202833785U CN 201220509666 CN201220509666U CN202833785U CN 202833785 U CN202833785 U CN 202833785U CN 201220509666 CN201220509666 CN 201220509666 CN 201220509666 U CN201220509666 U CN 201220509666U CN 202833785 U CN202833785 U CN 202833785U
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- plunger
- hydrostatic bearing
- plungers
- generating set
- friction
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Abstract
A wind generating set yawing braking device with a hydrostatic bearing comprises a braking device upper cover, bolts, O-shaped rings, cylinder bodies, plungers, sealing parts with compensation, lower end plates, a push rod and a braking shoe. The wind generating set yawing braking device with a hydrostatic bearing is characterized in that a hydrostatic bearing communicated with high pressure oil is arranged at the upper portion of each cylinder body and each plunger, the lower end face of the plunger is a spherical surface, and the upper end face of the push rod which is matched with the plunger is also a spherical surface with size matched with the lower end face of the plunger. Under the function of the hydrostatic bearings arranged at the upper portion of the cylinder bodies and the plungers, in the process of brake, friction borne by the braking shoe can be transmitted to the plungers, radial component force of the friction is borne by the hydrostatic bearing, the force action mode that the radial component force of the friction is borne by wall bodies of the plungers and the cylinder bodies when no hydrostatic bearing exists is changed, and therefore the friction to the plungers and hydrostatic cylinders because of the radial component force is largely reduced and then utilization performance and service life of the brake are improved.
Description
One, technical field:
The present invention relates to a kind of wind power generating set off-course brake.This hydraulic jaw type break with hydrostatic bearing especially is adapted to the pitch-controlled wind-driven generator group, also is adapted to wind power generating set and the machinery of other type.
Two, background technique:
Human in order to restructure the use of energy, adopt as soon as possible the clean energy resource service human, wind generating technology is rapidly development.Along with the development of this technology, in order to improve the generating efficiency of wind power generating set, hydraulic transmission and control system are widely used in the control of impeller driftage.
In existing impeller driftage control, mainly be the stable braking that will guarantee when wind-driven generator work the cabin, and the stable damping force of when the impeller yawing rotation, the cabin being rotated, guarantee the rotation of calming down in cabin.In order to reach this function, people have adopted the caliper brake of hydraulic control to satisfy its usage requirement.In this class hydraulic braking sytem of prior art, owing to connect the floating bearing of cabin and tower cylinder certain gap is arranged, and this gap can be strengthened along with the unit operation time lengthening.Also there is unbalance loading in cabin self in addition.Owing to the existence in gap, by moving in quiet braking process, because the motion of break oil cylinder is asynchronous and the imbalance of cabin load, meeting is so that the inner ring of floating bearing produces inclination in its outer ring relatively in the cabin; The inner ring of floating bearing relatively its outer ring generation is tilted in the braking process and can produces horizontal active force to the plunger of brake cylinder.The plunger two ends of break and cylinder body produce violent side friction under the effect of this active force, this larger side-friction so that the plunger of brake cylinder produce shake and creep in when motion, the internal surface of wearing and tearing or plucking break oil cylinder, and then the sealing between damage plunger and cylinder body, cause the leakage of oil of master cylinder and the long-term dynamics pressurize operation of hydraulic control system, so that the temperature of hydraulic power unit raises.The direct result of this state is exactly: braking moment is unstable, and master cylinder leaks seriously, has polluted the environment of safeguarding of main frame.In addition, system's dwell time shortens again energy transform into heat energy heating hydraulic power unit of---motor pump frequent starting---motor pump work done; System by fluid during constantly heating and motor pump constantly start reduced viscosity---the sealability of system further reduces; Add that integrated package makes its original seal break-off from the different thermal expansion that the materials variances of solenoid valve and each external connector causes, increase leaks.So that the wind field attendant often will shut down maintenance and it is changed, seriously had influence on the generating efficiency of wind field.
Three, model utility content:
Purpose of the present invention be exactly to develop a kind of cost approach, simple and reliable, can be for relatively producing that the wind power generating set off-course brake of laterally concentrating active force to provide hydrostatic bearing to support is provided the plunger to brake cylinder in braking process in its outer ring because of the inner ring of floating bearing.
Solution of the present invention is: this break is by break loam cake 1, bolt 2, and O shape circle 3, cylinder body 4, plunger 5, the Sealing 6 and 7 of band compensation, lower end sheet 8, push rod 9 and brake shoe 10 are formed by combining.It is characterized in that: be provided with a hydrostatic bearing that communicates with high pressure oil at cylinder body 4 with the top of plunger 5; The lower end surface of plunger 5 is sphere, and the upper end of the push rod 9 that cooperates with it also is the sphere that size cooperates with it.Because the effect of the hydrostatic bearing on the top of cylinder body 4 and plunger 5, in braking process, the frictional force that brake shoe 10 is subject to can be transmitted to plunger 5, the radial component of this active force is born by this hydrostatic bearing, when having changed without hydrostatic bearing, the power effect mode that this radial component is born by the wall body of plunger and cylinder body reaches the earth and has reduced this radial component to the rub sassafras of plunger 5 with cylinder body 4, and then usability and the life-span of having improved this break.The present invention also can remove bolt 2 and O shape circle 3, and with loam cake 1, cylinder body 4 and lower end sheet 8 are combined into one.
The present invention can effectively weaken because of what the gap of floating bearing and unbalance loading caused in braking process that plunger to brake cylinder produces and laterally concentrates active force, reduce the plunger two ends and under the effect of laterally concentrating active force, produce violent side friction with cylinder body, the internal surface of wearing and tearing or plucking break oil cylinder, and then the sealing between damage plunger and cylinder body.Guarantee the service behaviour of break and its effective running of length of hydraulic power pumping plant.And then the working environment of the normal operation of assurance wind power generating set and generating efficiency and main frame is not by oil pollution.
Four, description of drawings:
Fig. 1 is structural drawing of the present invention.
Five, embodiment:
The specific embodiment of the present invention is: when wind power generating set is normally moved, plunger 5 epicoeles of the present invention are in the state that the high pressure oil effect is arranged, plunger 5 presses the top sphere of push rod 9, brake shoe 10 is close on the upper surface of floating bearing inner ring, the friction torque that produces has been locked the outer ring of floating bearing firmly, has kept the cabin constant on the seat of appointment.When master-control room sends the instruction cabin need to go off course the time, plunger 5 epicoeles of the present invention are in the damping state by the low pressure oil effect, this moment, the cabin was under the driving of yaw motor, simultaneously again under low pressure damping friction torque of the present invention effect, be turned back to reposefully the position of appointment, when it arrives the position of appointment, master-control room sends instruction, hydraulic system is supplied with the high pressure liquid force feed to plunger 5 epicoeles of the present invention, plunger 5 compresses rapidly the top sphere of push rod 9 downwards, brake shoe 10 is close on the upper surface of floating bearing inner ring, and the friction torque of generation makes cabin stop motion and braking.In this process, the upper surface of the floating bearing inner ring that causes because of gap and the unbalance loading of floating bearing tilts to be braked Cylinder Plunger 5 bottom spheres and the position adjustment of the top sphere of the push rod 9 that cooperates is with it mated, side-friction weakens the active force at plunger two ends about in the of 5 of brake cylinder in braking process, remaining part also can be by being arranged on plunger 5 and cylinder body 4 tops, the hydrostatic bearing that is connected with high pressure oil is born and balance, reduces the top of its axioversion that causes plunger 5 and plunger 5 and the sassafras that acutely rubs of cylinder body 4.
Claims (2)
1. wind generating set yaw break with hydrostatic bearing, by loam cake (1), bolt (2), O shape circle (3), cylinder body (4), plunger (5), the Sealing (6,7) of band compensation, lower end sheet (8), push rod (9) and brake shoe (10) are formed by combining; It is characterized in that: be provided with a hydrostatic bearing that communicates with high pressure oil at cylinder body (4) with the top of plunger (5); The lower end surface of plunger (5) is sphere, and the upper end of the push rod (9) that cooperates with it also is the sphere that size cooperates with it.
2. a kind of wind generating set yaw break with hydrostatic bearing according to claim 1 is characterized in that: remove bolt (2) and O shape circle (3), with loam cake (1), cylinder body (4) and lower end sheet (8) are combined into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220509666 CN202833785U (en) | 2012-10-07 | 2012-10-07 | Wind generating set yawing braking device with hydrostatic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220509666 CN202833785U (en) | 2012-10-07 | 2012-10-07 | Wind generating set yawing braking device with hydrostatic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833785U true CN202833785U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220509666 Expired - Fee Related CN202833785U (en) | 2012-10-07 | 2012-10-07 | Wind generating set yawing braking device with hydrostatic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9765817B1 (en) | 2016-03-15 | 2017-09-19 | Industrial Technology Research Institute | Hydrostatic bearing assembly |
| WO2019158244A1 (en) * | 2018-02-16 | 2019-08-22 | Ks Gleitlager Gmbh | Brake device in a wind turbine and wind turbine |
-
2012
- 2012-10-07 CN CN 201220509666 patent/CN202833785U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9765817B1 (en) | 2016-03-15 | 2017-09-19 | Industrial Technology Research Institute | Hydrostatic bearing assembly |
| WO2019158244A1 (en) * | 2018-02-16 | 2019-08-22 | Ks Gleitlager Gmbh | Brake device in a wind turbine and wind turbine |
| CN111712633A (en) * | 2018-02-16 | 2020-09-25 | Ks滑动轴承有限公司 | Braking device in wind power generation equipment and wind power generation equipment |
| CN111712633B (en) * | 2018-02-16 | 2023-10-31 | Ks滑动轴承有限公司 | Braking device in wind power generation equipment and wind power generation equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131007 |