CN210290005U - Yaw variable pitch driving device, yaw device adopting same and variable pitch device - Google Patents
Yaw variable pitch driving device, yaw device adopting same and variable pitch device Download PDFInfo
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- CN210290005U CN210290005U CN201920490247.4U CN201920490247U CN210290005U CN 210290005 U CN210290005 U CN 210290005U CN 201920490247 U CN201920490247 U CN 201920490247U CN 210290005 U CN210290005 U CN 210290005U
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- turntable bearing
- rack
- outer ring
- hydraulic cylinder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The utility model relates to a wind-powered electricity generation driftage with become oar device, especially driftage become oar drive arrangement and adopt device's driftage device and become oar device. The yaw variable pitch driving device comprises a turntable bearing, wherein teeth are arranged on the outer ring of the turntable bearing, and the yaw variable pitch driving device also comprises racks, wherein the racks are positioned on one side of the outer ring, are not less than two and are arranged in an annular array around the axis of the turntable bearing; the rack is fixed on the lifting device, and the lifting device is used for meshing and separating the rack and the teeth on the outer ring of the turntable bearing; and the translation device is fixed on the translation device and used for driving the rack to reciprocate. The device adopts a hydraulic yawing variable pitch system, has small unit volume, light weight, good dynamic response and large torque, does not need a speed change mechanism, and takes an energy accumulator as a standby power source to carry out full feathering operation on the blades without designing a standby power supply when the variable pitch system is in power failure.
Description
Technical Field
The utility model relates to a wind-powered electricity generation driftage with become oar device, especially driftage become oar drive arrangement and adopt device's driftage device and become oar device.
Background
At present, an electric yawing variable pitch system is generally adopted in a yawing variable pitch mode of a wind driven generator, the unit volume and the weight of the electric yawing variable pitch system are large, a large-speed-ratio reduction gear box needs to be configured, and when the variable pitch system loses power, a standby power supply also needs to be configured for full feathering operation of blades.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a driftage of unit volume is little, light in weight, need not stand-by power supply becomes oar drive arrangement and adopts device's driftage device and become oar device, and concrete technical scheme is:
the yaw variable pitch driving device comprises a turntable bearing, wherein teeth are arranged on the outer ring of the turntable bearing, and the yaw variable pitch driving device also comprises racks, wherein the racks are positioned on one side of the outer ring, are not less than two and are arranged in an annular array around the axis of the turntable bearing; the rack is fixed on the lifting device, and the lifting device is used for meshing and separating the rack and the teeth on the outer ring of the turntable bearing; and
the lifting device is fixed on the translation device, the translation device is used for driving the rack to reciprocate, and the rack is used for driving the outer ring of the turntable bearing to rotate.
By adopting the technical scheme, the straight moving device pushes the rack to move, so that the rack and the outer ring of the turntable bearing rotate relatively, and yaw and pitch are realized. When the rack is meshed with the teeth of the outer ring of the turntable bearing, the translation device pushes the rack to move, the rack and the outer ring of the turntable bearing send relative rotation, then the lifting device retracts the rack, the rack is separated from the teeth of the outer ring of the turntable bearing, the rack is reset under the driving of the translation device, and the rack is meshed with the teeth of the outer ring of the turntable bearing under the action of the lifting device after being reset, so that the outer ring of the turntable bearing is continuously pushed to rotate.
Because the gear racks are not less than two, the two gear racks can work alternately to realize continuous operation, and the gear racks are kept to be contacted with the teeth of the outer ring of the turntable bearing, so that the outer ring of the turntable bearing is prevented from freely rotating without limit.
The rack is normally kept meshed with the teeth of the outer ring of the turntable bearing, so that the yaw and pitch positions are locked, a brake is not needed, and the stability is not good.
Preferably, the lifting device comprises a sliding seat, a lifting groove is formed in the sliding seat, the rack is slidably mounted in the lifting groove, and the sliding seat is connected with the translation device; the bottom of the lifting hydraulic cylinder is fixed at the bottom of the lifting groove, a piston rod of the lifting hydraulic cylinder is connected with the bottom of the rack, the rack is separated from the teeth of the outer ring of the turntable bearing when the piston rod of the lifting hydraulic cylinder retracts, and the rack is meshed with the teeth of the outer ring of the turntable bearing when the piston rod of the lifting hydraulic cylinder extends out.
Through adopting above-mentioned technical scheme, hydraulic cylinder drive rack goes up and down, and the rack is installed in the sliding seat, transmits axial force for the sliding seat, bears radial force by the sliding seat.
Preferably, the number of the lifting hydraulic cylinders is not less than two.
Through adopting above-mentioned technical scheme, a plurality of hydraulic cylinder can reduce single hydraulic cylinder's radial force to improve the stability of rack.
Preferably, the translation device comprises a sliding fixed seat, a sliding groove is arranged on the sliding fixed seat, and the sliding seat is slidably mounted in the sliding groove; and the single-rod double-acting hydraulic cylinder is arranged at one end of the sliding fixing seat, and a piston rod of the single-rod double-acting hydraulic cylinder is connected with the sliding seat.
Through adopting above-mentioned technical scheme, through the stable latched position of hydraulic pressure, need not arresting gear, simplified structure and control.
The hydraulic system has small unit volume, light weight, good dynamic response, large torque and no need of a speed change mechanism. When power is lost, the energy accumulator is used as a standby power source to work without designing a standby power source.
Preferably, the translation device comprises
The double-rod hydraulic cylinder comprises a translational hydraulic cylinder body and a translational piston rod, wherein a sliding seat is arranged on the translational hydraulic cylinder body, and the translational piston rod is slidably arranged on the translational hydraulic cylinder body; and the cylinder body fixing seat is provided with a cylinder body sliding groove, the translational hydraulic cylinder body is slidably mounted in the cylinder body sliding groove, and two ends of the translational piston rod are respectively fixed at two ends of the cylinder body sliding groove.
Through adopting above-mentioned technical scheme, through the stable latched position of hydraulic pressure, need not arresting gear, simplified structure and control.
The dual-rod hydraulic cylinder body rotates to reduce the size of the translation device.
A yaw assembly including a yaw pitch drive assembly; the outer ring of the turntable bearing is fixed at the top of the tower barrel; and the main frame is fixed on the inner ring of the turntable bearing, and the translation device is fixed at the bottom of the main frame and is positioned on one side of the outer ring of the turntable bearing.
A pitch device comprising a yaw pitch drive; the inner ring of the turntable bearing is fixed on the hub, and the translation device is fixed on the hub and is positioned on one side of the outer ring of the turntable bearing; and the fan blade is fixed on the outer ring of the turntable bearing.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides a driftage becomes oar drive arrangement and adopts device's driftage device and change the oar device and adopt hydraulic pressure driftage to become the oar system, and hydraulic pressure driftage becomes oar system unit volume small, light in weight, dynamic response good, the moment of torsion is big, need not speed change mechanism, becomes the oar system when losing the power, carries out the full in the same direction as the oar operation and need not to design stand-by power supply with the energy storage ware as reserve power source to the paddle.
Drawings
FIG. 1 is a schematic front view of a pitch device according to a first embodiment;
FIG. 2 is a partial enlarged structural schematic view of a pitch device according to the first embodiment;
FIG. 3 is a schematic structural view of a yawing device according to a second embodiment;
FIG. 4 is a schematic bottom view of the yawing device according to the second embodiment, with the tower hidden;
fig. 5 is a schematic cross-sectional view of a dual-rod hydraulic cylinder and a sliding seat.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 5, the yaw variable pitch driving device comprises a turntable bearing, wherein teeth 111 are arranged on an outer ring 11 of the turntable bearing, and the yaw variable pitch driving device further comprises at least two racks 2, wherein the racks 2 are positioned on one side of the outer ring 11, and are arranged in an annular array around the axis of the turntable bearing; the rack 2 is fixed on the lifting device, and the lifting device is used for meshing and separating the rack 2 and the teeth 111 on the outer ring 11 of the turntable bearing; and the lifting device is fixed on the translation device, the translation device is used for driving the rack 2 to reciprocate, and the rack 2 is used for driving the outer ring 11 of the turntable bearing to rotate.
The translation device pushes the rack 2 to move, so that the rack 2 and the outer ring 11 of the turntable bearing rotate relatively, and yaw and pitch are achieved. When the rack 2 is meshed with the teeth 111 of the outer ring 11 of the turntable bearing, the translation device pushes the rack 2 to move, the rack 2 and the outer ring 11 of the turntable bearing send relative rotation, then the lifting device retracts into the rack 2, the rack 2 is separated from the teeth 111 of the outer ring 11 of the turntable bearing, the rack 2 is reset under the driving of the translation device, and the rack 2 is meshed with the teeth 111 of the outer ring 11 of the turntable bearing under the action of the lifting device after being reset to continuously push the outer ring 11 of the turntable bearing to rotate.
Because at least two racks 2 are adopted, the two racks 2 can work alternately to realize continuous operation, and at least one rack 2 is kept in contact with the teeth 111 of the outer ring 11 of the turntable bearing, so that the outer ring 11 of the turntable bearing is prevented from freely rotating without limit, and the outer ring 11 of the turntable bearing is locked.
The rack 2 is normally meshed with the teeth 111 of the outer ring 11 of the turntable bearing, so that the yaw and pitch changing positions are locked, a brake is not needed, the structure is simplified, the control difficulty and fault points are reduced, and the stability and reliability are improved.
The lifting device comprises a sliding seat 6, a lifting groove 61 is arranged on the sliding seat 6, the rack 2 is slidably arranged in the lifting groove 61, and the sliding seat 6 is connected with the translation device; and the bottom of the lifting hydraulic cylinder 62 is fixed in a hydraulic cylinder groove 63 at the bottom of the lifting groove 61, a piston rod of the lifting hydraulic cylinder 62 is connected with the bottom of the rack 2, the rack 2 is separated from the teeth 111 of the outer ring 11 of the turntable bearing when the piston rod of the lifting hydraulic cylinder 62 is retracted, and the rack 2 is meshed with the teeth 111 of the outer ring 11 of the turntable bearing when the piston rod of the lifting hydraulic cylinder 62 is extended.
Two lifting hydraulic cylinders 62 are symmetrically arranged. The two lifting hydraulic cylinders can reduce the radial force and the axial force of a single lifting hydraulic cylinder, and the lifting and locking stability of the rack 2 is improved.
The translation device comprises a sliding fixed seat 3, a sliding groove 31 is arranged on the sliding fixed seat 3, and a sliding seat 6 is slidably arranged in the sliding groove 31; and a single-rod double-acting hydraulic cylinder 44, wherein the single-rod double-acting hydraulic cylinder 44 is arranged at one end of the sliding fixed seat 3, and a piston rod of the single-rod double-acting hydraulic cylinder 44 is connected with the sliding seat 6. The single-rod, double-acting, hydraulic cylinder 44 is reversible.
Example two
The difference between the first embodiment and the second embodiment is that the translating device, as shown in fig. 3 to 5, includes a double-rod hydraulic cylinder, the double-rod hydraulic cylinder includes a translating hydraulic cylinder body 41 and a translating piston rod 42, the translating hydraulic cylinder body 41 is provided with a sliding seat 6, and the translating piston rod 42 is slidably mounted on the translating hydraulic cylinder body 41; and a cylinder body fixing seat 7, wherein a cylinder body sliding groove 71 is arranged on the cylinder body fixing seat 7, the translational hydraulic cylinder body 41 is slidably arranged in the cylinder body sliding groove 71, and two ends of the translational piston rod 42 are respectively fixed at two ends of the cylinder body sliding groove 71. The double-rod hydraulic cylinder can be adjusted in both forward and reverse directions.
The hydraulic yawing variable pitch system is small in unit volume, light in weight, good in dynamic response and large in torque, a speed change mechanism is not needed, and when the variable pitch system is in power failure, the energy accumulator is used as a standby power source to perform full feathering operation on the blades without designing a standby power supply.
As shown in fig. 1, 3-5, a yawing assembly, the yawing assembly including a yaw pitch drive; the outer ring 11 of the turntable bearing is fixed on the top of the tower tube 82; and the main frame 81 is fixed on the inner ring 12 of the turntable bearing, and the straight moving device is fixed at the bottom of the main frame 81 and is positioned at one side of the outer ring 11 of the turntable bearing.
Specifically, the translational device comprises a double-rod hydraulic cylinder, the double-rod hydraulic cylinder comprises a translational hydraulic cylinder body 41 and a translational piston rod 42, the translational hydraulic cylinder body 41 is provided with a sliding seat 6, and the translational piston rod 42 is slidably arranged on the translational hydraulic cylinder body 41; and the cylinder fixing seats 7 are arranged at the bottom of the main frame 81, the cylinder fixing seats 7 are arranged around the axis of the turntable bearing in an annular array mode, six cylinder fixing seats 7 are arranged, cylinder sliding grooves 71 are formed in the cylinder fixing seats 7, the translational hydraulic cylinder 41 is slidably arranged in the cylinder sliding grooves 71, and two ends of the translational piston rod 42 are respectively fixed at two ends of the cylinder sliding grooves 71.
When the yaw is needed, the double-rod hydraulic cylinder is started, the translational hydraulic cylinder body 41 pushes the sliding seat 6 to move, the sliding seat 6 drives the rack 2 to move, the rack 2 drives the main frame 81 to rotate under the action of the teeth 111 of the outer ring 11 of the disc bearing, when the rack 2 moves in place, the lifting hydraulic cylinder 62 retracts into the piston rod, the rack 2 is separated from the teeth 111 of the outer ring 11 of the disc bearing, then the translational hydraulic cylinder body 41 resets, the piston rod of the lifting hydraulic cylinder 62 extends out after the translational hydraulic cylinder body 41 resets, the rack 2 is meshed with the teeth 111 of the outer ring 11 of the disc bearing again, and the actions are repeated until the yaw is in place. Can be adjusted in both forward and reverse directions.
As shown in fig. 1-2, the pitch device includes a yaw pitch drive; the inner ring of the turntable bearing is fixed on the hub, and the translation device is fixed on the hub and is positioned on one side of the outer ring 11 of the turntable bearing; and the fan blade is fixed on the outer ring 11 of the turntable bearing.
Specifically, the translation device comprises a sliding fixed seat 3, a sliding groove 31 is arranged on the sliding fixed seat 3, and a sliding seat 6 is slidably arranged in the sliding groove 31; and a single-rod double-acting hydraulic cylinder 44, wherein the single-rod double-acting hydraulic cylinder 44 is arranged at one end of the sliding fixed seat 3, and a piston rod of the single-rod double-acting hydraulic cylinder 44 is connected with the sliding seat 6.
When the pitch is required, the single-rod double-acting hydraulic cylinder 44 is started, the single-rod double-acting hydraulic cylinder 44 pushes the sliding seat 6 to move, the sliding seat 6 drives the rack 2 to move, the rack 2 pushes the outer ring 11 of the turntable bearing to rotate, the outer ring 11 of the turntable bearing drives the fan blades to rotate, when the rack 2 moves in place, the lifting hydraulic cylinder 62 retracts into the piston rod, the rack 2 is separated from the teeth 111 of the outer ring 11 of the turntable bearing, then the single-rod double-acting hydraulic cylinder 44 resets, the piston rod of the lifting hydraulic cylinder 62 extends out after the single-rod double-acting hydraulic cylinder 44 resets, the rack 2 is meshed with the teeth 111 of the outer ring 11 of. Can be adjusted in both forward and reverse directions.
Claims (7)
1. Driftage becomes oar drive arrangement, including the slewing bearing, the outer lane of slewing bearing is equipped with the tooth, its characterized in that still includes
The rack is positioned on one side of the outer ring of the turntable bearing, and the number of the racks is not less than two, and the racks are arranged around the axis of the turntable bearing in an annular array manner;
the rack is fixed on the lifting device, and the lifting device is used for meshing and separating the rack and the teeth on the outer ring of the turntable bearing; and
the lifting device is fixed on the translation device, the translation device is used for driving the rack to reciprocate, and the rack is used for driving the outer ring of the turntable bearing to rotate.
2. The yaw pitch drive apparatus of claim 1,
the lifting device comprises
The sliding seat is provided with a lifting groove, the rack is slidably arranged in the lifting groove, and the sliding seat is connected with the translation device; and
the bottom of the lifting hydraulic cylinder is fixed at the bottom of the lifting groove, a piston rod of the lifting hydraulic cylinder is connected with the bottom of the rack, the rack is separated from the teeth of the outer ring of the turntable bearing when the piston rod of the lifting hydraulic cylinder retracts, and the rack is meshed with the teeth of the outer ring of the turntable bearing when the piston rod of the lifting hydraulic cylinder extends out.
3. The yaw pitch drive apparatus of claim 2,
the number of the lifting hydraulic cylinders is not less than two, and the lifting hydraulic cylinders are symmetrically arranged.
4. The yaw pitch drive apparatus of claim 2,
the translation device comprises
The sliding fixing seat is provided with a sliding groove and is arranged in the sliding groove in a sliding manner; and
the single-rod double-acting hydraulic cylinder is fixed at one end of the sliding fixing seat, and a piston rod of the single-rod double-acting hydraulic cylinder is connected with the sliding seat.
5. The yaw pitch drive apparatus of claim 2,
the translation device comprises
The double-rod hydraulic cylinder comprises a translational hydraulic cylinder body and a translational piston rod, wherein a sliding seat is arranged on the translational hydraulic cylinder body, and the translational piston rod is slidably arranged on the translational hydraulic cylinder body; and
the cylinder body fixing base is provided with a cylinder body sliding groove, the translational hydraulic cylinder body is slidably mounted in the cylinder body sliding groove, and two ends of the translational piston rod are respectively fixed at two ends of the cylinder body sliding groove.
6. A yawing device, the yawing device comprising
The yaw pitch drive assembly of claim 1;
the outer ring of the turntable bearing is fixed at the top of the tower barrel; and
the main frame is fixed on the inner ring of the turntable bearing, and the translation device is fixed at the bottom of the main frame and positioned on one side of the outer ring of the turntable bearing.
7. A pitch device comprising
The yaw pitch drive assembly of claim 1;
the inner ring of the turntable bearing is fixed on the hub, and the translation device is fixed on the hub and is positioned on one side of the outer ring of the turntable bearing; and
the fan blades are fixed on the outer ring of the turntable bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920490247.4U CN210290005U (en) | 2019-04-11 | 2019-04-11 | Yaw variable pitch driving device, yaw device adopting same and variable pitch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920490247.4U CN210290005U (en) | 2019-04-11 | 2019-04-11 | Yaw variable pitch driving device, yaw device adopting same and variable pitch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210290005U true CN210290005U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920490247.4U Expired - Fee Related CN210290005U (en) | 2019-04-11 | 2019-04-11 | Yaw variable pitch driving device, yaw device adopting same and variable pitch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210290005U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882353A (en) * | 2019-04-11 | 2019-06-14 | 尉立 | Yaw pitch drive and yaw device and vane change device using the device |
-
2019
- 2019-04-11 CN CN201920490247.4U patent/CN210290005U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882353A (en) * | 2019-04-11 | 2019-06-14 | 尉立 | Yaw pitch drive and yaw device and vane change device using the device |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 |