CN210033710U - Automatic blade locking device for wind generating set to be locked along axial direction of blade root - Google Patents
Automatic blade locking device for wind generating set to be locked along axial direction of blade root Download PDFInfo
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- CN210033710U CN210033710U CN201920336160.1U CN201920336160U CN210033710U CN 210033710 U CN210033710 U CN 210033710U CN 201920336160 U CN201920336160 U CN 201920336160U CN 210033710 U CN210033710 U CN 210033710U
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- locking
- blade
- locking pin
- stop block
- blade root
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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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Abstract
The utility model discloses an automatic blade locking device for locking a wind generating set along the axial direction of a blade root, which comprises a blade locking pin, a locking stop block, a locking pin support, a push rod and a linear driving mechanism with a self-locking function; the locking stop block is fixed on the variable-pitch bearing through a blade root bolt; the locking pin support is arranged on a web plate of the hub through a bolt; the pin head of blade locking pin can pass the locking pin support along the blade root axial and stretch into the locking notch of locking dog and lock, and blade locking pin afterbody is connected with linear drive mechanism front end, and linear drive mechanism rear end is connected with push rod one end, and the push rod other end passes the locking pin support to it has the external screw thread to process, and is fixed with the nut, processes out the parallel plane of two symmetries on the external screw thread, and the dysmorphism hole cooperation on the locking pin support makes the push rod can only axial displacement. The utility model discloses can long-range automatic control, convenient operation uses manpower sparingly material resources, prolongs the wind generating set operating duration before the typhoon simultaneously, increases the generated energy.
Description
Technical Field
The utility model belongs to the technical field of the variable pitch system of variable pitch type wind generating set's technique and specifically relates to indicate a wind generating set along the automatic blade locking device of blade root axial locking for maintain operating mode and anti typhoon operating mode locking blade, make the blade can not follow the blade axis and rotate.
Background
In the prior art, a megawatt wind generating set generally adopts pitch control, and the rotating speed and the power of the set are controlled by adjusting the pitch angle of a blade. The commonly used variable pitch mechanism forms include electric variable pitch and hydraulic variable pitch, and the electric variable pitch is widely applied.
At present, a common locking mode of electric variable pitch is to lock by using an electromagnetic band-type brake of a variable pitch drive. The electromagnetic band-type brake of the variable pitch drive is adopted for locking, the cost is high, the reliability is low, and the variable pitch mechanism cannot be locked when the variable pitch drive is maintained. And a manual mechanical locking device is additionally arranged, a tooth-shaped or cylindrical locking block is clamped into a tooth groove of the variable pitch bearing, and the locking block is fixed with the hub by a bolt, so that locking is realized, the structure is complex, and no automatic locking function exists. The blade locking device partially realizes the automatic locking function and has a more complex structure.
The hydraulic variable-pitch mechanism can lock the action of the hydraulic cylinder through a one-way valve of a hydraulic system, so that the variable-pitch mechanism is locked, and the problem of reliability guarantee also exists. The blade locking device is characterized in that a locking pin is additionally arranged for locking, a transition flange with a locking hole is required to be additionally arranged at the blade root, the locking pin fixed on the hub extends out to lock the blade through the locking transition flange, and the blade locking device does not have an automatic locking function.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's shortcoming and not enough, provide an automatic blade locking device of wind generating set along blade root axial locking for pitch-changing type wind generating set locks become oar mechanism in typhoon comes the time or wind wheel hoist and mount and maintenance process, prevents that the blade from taking place unexpected change oar action, guarantees wind generating set self and maintenance personal safety.
In order to achieve the above object, the present invention provides a technical solution: an automatic blade locking device for a wind generating set to be locked along the axial direction of a blade root comprises a blade locking pin, a locking stop block, a locking pin support, a push rod and a linear driving mechanism with a self-locking function; the locking stop block is fixed on a variable-pitch bearing of the wind generating set through a blade root bolt, a locking notch matched with the blade locking pin is formed in the locking stop block, the outer ring of the variable-pitch bearing is fixedly connected with a hub of the wind generating set through a bolt, and the inner ring of the variable-pitch bearing is fixedly connected with the blade of the wind generating set through a blade root bolt; the blade locking pin support is installed on a web plate of the hub through bolts, a pin hole for the blade locking pin to pass through is formed in the web plate, the blade locking pin support is used for supporting and guiding the blade locking pin and transmitting locking load to the hub, a pin head of the blade locking pin can axially penetrate through the pin hole of the blade locking pin support along a blade root and then extends into a locking notch of the locking stop block to be locked, the tail part of the blade locking pin is connected with the front end of the linear driving mechanism through a pin shaft, the rear end of the linear driving mechanism is connected with one end of the push rod through the pin shaft, the other end of the push rod penetrates through a rear end baffle plate of the blade locking pin support and is processed with external threads, two symmetrical parallel planes are processed on the external threads, the two planes are matched with a special-shaped hole in the rear end baffle plate to enable the push rod not to rotate and only to axially move, and the push rod can push the linear driving mechanism and, therefore, the manual locking function of the blade locking pin is realized, and the blade is locked manually under the condition that a power supply is cut off or the linear driving mechanism fails.
Further, the linear drive mechanism is provided with a sensor for detecting a position.
Furthermore, two proximity switches are installed on the locking pin support and used for monitoring the extending and retracting state positions of the blade locking pin, and the feedback signal is used for safety control.
Further, the blade root bolt penetrates through the locking stop block, and a nut is additionally arranged to fix the locking stop block; the locking stop block is provided with a stepped hole for avoiding a blade root round nut of a blade root bolt, the locking stop block and the blade root round nut are in small clearance fit so that the blade root round nut can bear shearing force, and the stepped hole is of an open structure at one end and is convenient to install; the front end of the locking stop block is processed into teeth, one or more teeth are adopted according to strength, the teeth and the locking stop block are integrally processed, the teeth are embedded into tooth grooves of the variable pitch bearing after the locking stop block is installed, the teeth and the tooth grooves of the variable pitch bearing are matched in a small-gap high-precision mode, and loads are transmitted through the tooth matching, so that the locking stop block can bear huge loads when blades are locked.
Further, lubricating grease is coated between the blade locking pin and the locking pin support, so that friction resistance is reduced, and smooth withdrawing of the blade locking pin is guaranteed.
Further, the linear driving mechanism is an electric push rod, a hydraulic cylinder, a gear rack or a lead screw nut.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
1. the automatic blade locking device is simple in structure, capable of being automatically controlled in a remote mode, convenient to operate and low in cost.
2. The automatic blade locking device can be remotely and automatically controlled, and when blade locking is carried out before typhoon comes, a wind generating set does not need to be stepped on one by one for operation, so that a large amount of manpower and material resources are saved; meanwhile, the running time of the wind generating set before typhoon is prolonged, and the generating capacity is increased.
3. The automatic blade locking device is locked mechanically, the locking reliability is very high, the blade can be locked only by stretching out the blade locking pin at the feathering position, and the blade can not be locked by stretching out the blade locking pin at other positions, so that the safety risk caused by abnormal stretching of the automatic blade lock is reduced.
4. The locking stop block adopts a tooth-shaped structure and can bear larger locking load.
5. The automatic blade locking device is independent of a variable pitch system, and can still lock the wind wheel when the variable pitch drive fails and needs to be maintained and replaced.
6. The automatic blade locking device has a manual locking function, and can realize manual blade locking when the electric push rod fails.
Drawings
FIG. 1 is a schematic view of the construction of an automatic blade locking device.
FIG. 2 is a schematic view of the installation of the self-moving blade locking device.
FIG. 3 is a sectional view of the installation of the self-moving blade locking device.
Fig. 4 is a schematic structural view of the locking stopper.
Fig. 5 is one of the installation views of the locking stopper.
Fig. 6 is a second schematic view of the installation of the locking stop.
Fig. 7 is a schematic structural view of the push rod.
Fig. 8 is a schematic structural view of a rear end baffle.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
As shown in fig. 1 to 8, in the self-moving blade locking device for locking the wind generating set in the embodiment along the axial direction of the blade root, a pitch mechanism of the wind generating set is applicable and comprises a hub, a pitch bearing, a pitch drive, a blade locking device and a pitch electrical or hydraulic system; the outer ring of the variable pitch bearing 6 is fixedly connected with the hub 7 through bolts, and the inner ring is fixedly connected with the blades through blade root bolts.
The automatic blade locking device for the wind generating set to be locked along the axial direction of the blade root comprises a blade locking pin 1, a locking stop block 2, a locking pin support 3, a push rod 4 and a linear driving mechanism 5 with a self-locking function. The locking stop block 2 is fixed on a variable pitch bearing 6 of the wind generating set through a blade root bolt 8, a locking notch 201 matched with the blade locking pin 1 is formed in the locking stop block, and the thickness of the locking stop block 2 is designed according to the space size of the blade root and the limit locking moment when the blade root is locked. The locking pin support 3 is made of a Q345D steel plate and round steel or a steel pipe, is fixed on a web plate of the hub 7 through 7M 20 bolts (of course, bolts of other specifications and numbers can be used according to the design of connection strength), and is formed with a pin hole for the blade locking pin 1 to pass through for supporting and guiding the blade locking pin 1 and transmitting the locking load to the hub 7. The blade locking pin comprises a blade locking pin support 3, a pin head of the blade locking pin 1 can penetrate through a pin hole of the locking pin support 3 along the axial direction of a blade root and then extend into a locking notch 201 of a locking stop block 2 to be locked, the diameter of the blade locking pin 1 is designed according to the limit locking moment when the blade root is locked, carbon steel or alloy steel is adopted for quenching and tempering, the strength is increased, the bearing capacity is guaranteed, the width of the locking notch 201 is slightly larger than the diameter of the blade locking pin 1 to compensate the positioning error of the blade root, and the section of the matching surface of the blade locking pin 1 and the locking stop block 2 can be. The linear driving mechanism 5 can be an actuating mechanism such as an electric push rod, a hydraulic cylinder, a gear rack or a lead screw nut, the electric push rod is specifically selected in the embodiment, the electric push rod is not limited to a specific form, the installation and push-pull force requirements are met, the electrical parameters are determined according to an electrical reserved interface of a variable pitch system, a standard industrialized electric push rod can be selected, the electric push rod has a self-locking function, the blade locking pin 1 is in a self-locking state when power is off and stopped, and the blade locking pin 1 is prevented from sliding under the condition of abnormal power failure. The tail part of the blade locking pin 1 is connected with the front end of an electric push rod through a pin shaft, the rear end of the electric push rod is connected with one end of a push rod 4 through a pin shaft, the push rod 4 is processed through round steel, one end of the push rod is processed with a hole and a pin hole which are connected with the electric push rod, the other end of the push rod passes through a rear baffle 301 of a locking pin support 3 (the rear baffle 301 is connected with the locking pin support 3 through a bolt), and is processed with external threads which are fixed through a nut 9, two symmetrical parallel planes 401 are processed on the external threads and are matched with a special-shaped hole on the rear baffle 301, so that the push rod 4 cannot rotate and can only axially move, the push rod can push the electric push rod and the blade locking pin 1 to axially move integrally by rotating the nut 9 on the push rod 4, thereby realizing the manual locking function of the blade locking pin 1, and, and manual blade locking is realized.
A blade root bolt 8 penetrates through the locking stop block 2, and an additional nut 10 is used for fixing the locking stop block 2; a stepped hole is processed on the locking stop block 2 and used for avoiding a blade root round nut 11 of the blade root bolt 8, the locking stop block 2 and the blade root round nut 11 can be in small clearance fit so that the blade root round nut 11 can bear shearing force, and the stepped hole can be of a structure with an opening at one end, so that the locking stop block 2 is convenient to mount; the front end of the locking stop block 2 is processed to form a tooth 202, one or more teeth 202 can be adopted according to strength, the tooth 202 and the locking stop block 2 are integrally processed, the tooth 202 is embedded into a tooth groove of the variable pitch bearing 6 after the locking stop block 2 is installed, the tooth 202 and the tooth groove of the variable pitch bearing 6 are matched in a small-gap high-precision mode, and loads are transmitted through tooth matching, so that the locking stop block 2 can bear huge loads when blades are locked.
Two proximity switches (not shown) can be independently installed on the locking pin support 3 and used for monitoring the extending and retracting state positions of the blade locking pin 1, and feedback signals are used for safety control.
The vane lock pin 1 may be cylindrical, and the mating surface of the cylindrical vane lock pin 1 and the lock stopper 2 may be cylindrical or conical, or a cylindrical surface partially processed with a plane.
The locking pin support 3 is designed according to strength, can be adjusted according to different structural design of hub mounting interfaces, and can be adjusted to be mounted on a boss of a web plate of the hub 7.
The blade locking pin 1 and the locking pin support 3 can be directly in sliding fit, if the external load is too large under the condition that the blade locking pin 1 is withdrawn, lubricating grease can be smeared between the blade locking pin 1 and the locking pin support 3 and is periodically maintained, the friction resistance is reduced, and the blade locking pin 1 can be smoothly withdrawn.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a wind generating set is along automatic blade locking device of blade root axial locking which characterized in that: the blade locking device comprises a blade locking pin, a locking stop block, a locking pin support, a push rod and a linear driving mechanism with a self-locking function; the locking stop block is fixed on a variable-pitch bearing of the wind generating set through a blade root bolt, a locking notch matched with the blade locking pin is formed in the locking stop block, the outer ring of the variable-pitch bearing is fixedly connected with a hub of the wind generating set through a bolt, and the inner ring of the variable-pitch bearing is fixedly connected with the blade of the wind generating set through a blade root bolt; the blade locking pin support is installed on a web plate of the hub through bolts, a pin hole for the blade locking pin to pass through is formed in the web plate, the blade locking pin support is used for supporting and guiding the blade locking pin and transmitting locking load to the hub, a pin head of the blade locking pin can axially penetrate through the pin hole of the blade locking pin support along a blade root and then extends into a locking notch of the locking stop block to be locked, the tail part of the blade locking pin is connected with the front end of the linear driving mechanism through a pin shaft, the rear end of the linear driving mechanism is connected with one end of the push rod through the pin shaft, the other end of the push rod penetrates through a rear end baffle plate of the blade locking pin support and is processed with external threads, two symmetrical parallel planes are processed on the external threads, the two planes are matched with a special-shaped hole in the rear end baffle plate to enable the push rod not to rotate and only to axially move, and the push rod can push the linear driving mechanism and, therefore, the manual locking function of the blade locking pin is realized, and the blade is locked manually under the condition that a power supply is cut off or the linear driving mechanism fails.
2. The self-moving blade locking device for the axial locking of a wind turbine generator system along the blade root of claim 1, wherein: the linear drive mechanism is provided with a sensor for position detection.
3. The self-moving blade locking device for the axial locking of a wind turbine generator system along the blade root of claim 1, wherein: two proximity switches are mounted on the locking pin support and used for monitoring the extending and retracting state positions of the blade locking pin, and feedback signals are used for safety control.
4. The self-moving blade locking device for the axial locking of a wind turbine generator system along the blade root of claim 1, wherein: the blade root bolt penetrates through the locking stop block, and an additional nut is used for fixing the locking stop block; the locking stop block is provided with a stepped hole for avoiding a blade root round nut of a blade root bolt, the locking stop block and the blade root round nut are in small clearance fit so that the blade root round nut can bear shearing force, and the stepped hole is of an open structure at one end and is convenient to install; the front end of the locking stop block is processed into teeth, one or more teeth are adopted according to strength, the teeth and the locking stop block are integrally processed, the teeth are embedded into tooth grooves of the variable pitch bearing after the locking stop block is installed, the teeth and the tooth grooves of the variable pitch bearing are matched in a small-gap high-precision mode, and loads are transmitted through the tooth matching, so that the locking stop block can bear huge loads when blades are locked.
5. The self-moving blade locking device for the axial locking of a wind turbine generator system along the blade root of claim 1, wherein: lubricating grease is coated between the blade locking pin and the locking pin support to reduce friction resistance and ensure that the blade locking pin is smoothly withdrawn.
6. An automatic blade locking device for a wind turbine generator system according to claim 1 or 2, wherein the blade root locking device comprises: the linear driving mechanism is an electric push rod, a hydraulic cylinder, a gear rack or a lead screw nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920336160.1U CN210033710U (en) | 2019-03-18 | 2019-03-18 | Automatic blade locking device for wind generating set to be locked along axial direction of blade root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920336160.1U CN210033710U (en) | 2019-03-18 | 2019-03-18 | Automatic blade locking device for wind generating set to be locked along axial direction of blade root |
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| Publication Number | Publication Date |
|---|---|
| CN210033710U true CN210033710U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920336160.1U Active CN210033710U (en) | 2019-03-18 | 2019-03-18 | Automatic blade locking device for wind generating set to be locked along axial direction of blade root |
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| CN (1) | CN210033710U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483326A (en) * | 2020-11-26 | 2021-03-12 | 三一重能股份有限公司 | Impeller locking device and wind power equipment |
| CN113719405A (en) * | 2020-05-26 | 2021-11-30 | 新疆金风科技股份有限公司 | Wind generating set and wheel hub and impeller thereof |
| CN114109732A (en) * | 2021-12-14 | 2022-03-01 | 南通泰胜蓝岛海洋工程有限公司 | Wind power generation blade fixing device |
| CN115977894A (en) * | 2023-02-01 | 2023-04-18 | 南通奥里斯特机械有限公司 | High-toughness wind blade locking device for wind power generation |
-
2019
- 2019-03-18 CN CN201920336160.1U patent/CN210033710U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719405A (en) * | 2020-05-26 | 2021-11-30 | 新疆金风科技股份有限公司 | Wind generating set and wheel hub and impeller thereof |
| CN113719405B (en) * | 2020-05-26 | 2023-10-13 | 金风科技股份有限公司 | Wind generating set and hub and impeller thereof |
| CN112483326A (en) * | 2020-11-26 | 2021-03-12 | 三一重能股份有限公司 | Impeller locking device and wind power equipment |
| CN114109732A (en) * | 2021-12-14 | 2022-03-01 | 南通泰胜蓝岛海洋工程有限公司 | Wind power generation blade fixing device |
| CN114109732B (en) * | 2021-12-14 | 2024-06-11 | 南通泰胜蓝岛海洋工程有限公司 | Wind power generation blade fixing device |
| CN115977894A (en) * | 2023-02-01 | 2023-04-18 | 南通奥里斯特机械有限公司 | High-toughness wind blade locking device for wind power generation |
| CN115977894B (en) * | 2023-02-01 | 2023-09-19 | 南通奥里斯特机械有限公司 | High-toughness fan blade locking device for wind power generation |
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