CN203670099U - Mechanical braking device of vertical axis wind generating set - Google Patents
Mechanical braking device of vertical axis wind generating set Download PDFInfo
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- CN203670099U CN203670099U CN201320793884.1U CN201320793884U CN203670099U CN 203670099 U CN203670099 U CN 203670099U CN 201320793884 U CN201320793884 U CN 201320793884U CN 203670099 U CN203670099 U CN 203670099U
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- axis wind
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The utility model provides a mechanical braking device of a vertical axis wind generating set. The mechanical braking device comprises a drum brake arranged on a wind wheel of a vertical axis wind driven generator, a brake drum of the drum brake is fixed on an outer rotor of the wind generating set, a brake shoe is arranged on a stator arranged inside the rotor of the vertical axis wind generating set and corresponds to the inner side face of the brake drum, an operating part is movably arranged on the drum brake to be connected with the stator and makes contact with the brake shoe, and the displacement of the operating part enables the brake shoe to be opened or closed to brake the brake drum or release braking. The mechanical braking device further comprises a connecting mechanism which comprises a reset spring arranged on the stator or a tower column, the reset spring is arranged between the operating part and the stator, the connecting device further comprises a traction device connected with the operating part and a driving device. The mechanical braking device can effectively brake the wind driven generator, and the brake state can be stable and reliable.
Description
Technical Field
The invention relates to the technical field of vertical axis wind driven generators, and provides a mechanical braking device of a small vertical axis wind driven generator set.
Background
The braking device of the wind driven generator in the prior art is usually an electromagnetic brake, the braking force of the brake is insufficient, and in addition, the problem of coil heat dissipation exists. The existing wind driven generator also uses a disc brake, and the mechanical brake device has the defects of high cost and insufficient braking force. Furthermore, the braking device of the wind driven generator in the prior art is generally arranged at the top of the tower column, and the operation and maintenance are inconvenient.
Disclosure of Invention
The invention mainly aims to provide a mechanical brake device of a vertical axis wind generating set, which not only has a simple structure, but also has large brake force.
The purpose of the invention is realized as follows:
a mechanical brake device of a vertical axis wind generating set is characterized in that: the vertical axis wind turbine comprises a drum brake, a brake drum, a brake shoe, an operating part and a control part, wherein the drum brake is arranged on a wind wheel of the vertical axis wind turbine, the brake drum in the drum brake is fixed on an outer rotor of a generator set, the brake shoe is arranged on a stator of the vertical axis wind turbine, which is arranged in the rotor, and corresponds to the inner side surface of the brake drum, the operating part is arranged on the drum brake in a displaceable manner and is connected with the stator, the operating part is in contact with the brake shoe, and the displacement of the operating part causes the brake shoe to be opened and closed to brake the brake drum or release; the connecting mechanism comprises a pulling device, the pulling device is connected with the operating piece, and the pulling device is connected with a driving device.
In use, the driving device is started, the operating piece is pulled by the pulling device, so that the operating piece resists the displacement of a return spring arranged between two brake shoes in the drum brake, the opening and closing state of the brake shoes is changed, and the wind driven generator is braked or released.
The connecting mechanism can also comprise an additional reset tension spring which is arranged on the stator or the tower column, and the additional reset tension spring is arranged between the operating piece and the stator.
Through setting up this plus extension spring that resets, can increase the reset power of operating parts. And when the required reset force is not large, the additional reset tension spring can be not arranged.
A retaining tension spring is provided on a connecting cable between the pulling device and the operating member.
The operating member may be a lever rotating shaft rotatably fixed to the stator, a portion of the lever rotating shaft, which is disposed between two brake shoes hinged to the stator and having a spring therebetween, is in the shape of a flat wide plate, and a rocker arm is connected to the lever rotating shaft, and the rocker arm is connected to the return spring device and to the pulling device.
Under the condition that the additional reset tension spring is not arranged, the operating part is a lever rotating shaft which is rotationally fixed on the stator, the lever rotating shaft is arranged between two brake shoes which are hinged on the stator and provided with springs, the part between the two brake shoes is in a flat and wide plate shape, a rocker arm is connected on the lever rotating shaft, and the rocker arm is connected with the traction device.
The rocker arm can be driven to swing by tensioning the traction device through the driving device, so that the lever rotating shaft is driven to rotate, and the return spring or the return spring and an additional return tension spring are resisted at the same time, so that the brake state that the distance between two brake shoes is increased to enable the brake shoes to be attached to a brake drum is achieved; when the driving device rotates reversely, the traction device is loosened, and under the action of the return spring or the return spring and the additional return tension spring, the rocker arm swings reversely to drive the lever rotating shaft to rotate reversely, so that the brake releasing state that the brake shoes are separated from the brake drum is achieved, for example, the distance between the two brake shoes is reduced.
The operating part can also be a wedge-shaped plate and is arranged between the two brake shoes, and the operating part drives the two brake shoes to do linear motion through a linear motion mechanism, so that the opening or closing action of the two brake shoes is realized.
Furthermore, the connecting mechanism may further include a steering connecting member rotatably disposed on the stator or the tower column via a steering rotating shaft, the steering connecting member is provided with two connecting ends, one of the two connecting ends is connected to the lever rotating shaft via a connecting wire rope disposed between the front connecting end close to the rocker arm, and the other connecting end away from the rocker arm is connected to one end of a wire rope, and the other end of the wire rope extends downward along the tower column to connect to the pulling device.
Furthermore, the distance from the front connecting end on the steering connecting piece to the axle center of the steering rotating shaft is not more than the distance from the rear connecting end to the axle center of the steering rotating shaft.
In addition, the rear connection end preferably protrudes outside the circumferential surface of the stator or the pylon therebelow.
The rear connecting end which is extended out can facilitate the connection of the steel wire rope on the rear connecting end and a traction device arranged at the lower part of the tower column.
Furthermore, turn to the connecting piece and can be a right angle triangle-shaped board, turn to the pivot and connect on this right angle triangle-shaped board's the right angle end, preceding link and back link set up respectively in two other apex angle departments of this triangle-shaped board.
Further, the connecting device further includes a retaining tension spring provided on the wire rope connected between the steering link and the pulling device, that is, the wire rope is disconnected, and the retaining tension spring is connected therebetween.
The tension spring is arranged on the steel wire rope, so that the steel wire rope is not easy to relax and displace under the tensioning state of tension, the force acting on the brake shoe is prevented from changing, and the braking state is more stable.
The traction device can be a hydraulic or pneumatic device, a cylinder body is fixed with the tower column, a piston rod extending out of the cylinder body is connected with the inhaul cable, and the driving device connected with the cylinder body is a hydraulic or pneumatic system.
In a preferred scheme, the traction device comprises a push rod mechanism, the driving device is a motor, the push rod mechanism is a spiral mechanism, a nut and the motor in the push rod mechanism are fixed on the tower column, a screw is in threaded connection with the nut, one end of the screw is connected with the inhaul cable, and the other end of the screw is connected with the motor.
When the motor is started, the screw rod rotates to move downwards, for example, the inhaul cable is pulled, then the rocker arm swings against the return spring between the two brake shoes and/or an additional return tension spring, and the lever rotating shaft rotates by an angle, so that the brake shoes tightly hold the brake drum to brake. At this time, the motor is stopped, and the braking state can be maintained. When the brake is to be released, the starting motor rotates reversely, the steel wire rope is loosened, the rocker arm swings reversely under the action of the return spring and/or the additional return tension spring, and the lever rotating shaft rotates reversely through an angle, so that the brake shoe can release the brake drum. The motor is stopped at this time, and the brake can be released.
The utility model provides a vertical axis wind generating set's mechanical brake device, one anti-prior art uses electromagnetic braking's conventions, has eliminated the radiating difficulty of coil, does not also adopt the dish formula stopper with high costs, but adopts the great but drum brake that the cost is less than dish formula stopper far away of braking force, installs the brake drum on aerogenerator's rotor, has solved the not enough problem of braking force that prior art exists, can carry out effective braking to aerogenerator. In addition, the steering connecting piece and the retaining spring are arranged, so that the stable and reliable braking state can be ensured.
The invention is further illustrated by the following figures and examples.
Drawings
Fig. 1 is a schematic structural view of the vertical axis wind turbine generator system according to the present invention, wherein the mechanical brake device is mounted on the wind turbine generator.
Fig. 2 is a schematic structural diagram of the drum brake in the mechanical braking device of the vertical axis wind turbine generator system according to the present invention, in combination with the rotor and the stator of the generator.
Fig. 3 is a schematic view showing a structure in which brake shoes are mounted on a stator.
Fig. 4 is a schematic top view of the structure shown in fig. 3.
Fig. 5 is a schematic perspective view of a brake mechanism of a drum brake.
Detailed Description
Fig. 1 to 5 show a specific embodiment of a mechanical braking device of a vertical axis wind turbine generator set according to the present invention, the mechanical braking device is installed at the bottom of a wind wheel of a vertical axis wind turbine generator. The brake device comprises a drum brake, a connecting mechanism, an electric push rod and the like, wherein the drum brake comprises a brake drum 2, a fixed chassis 18, a brake shoe 15, a lever rotating shaft 16, a shoe rotating shaft 17, a rocker arm 9 and the like; the connecting mechanism comprises a reset tension spring bracket 11, an additional reset tension spring 10, a connecting bracket 14, a connecting steel wire rope 12, a steering connecting piece 13, a steering rotating shaft 19, a steel wire rope 3, a retaining tension spring 4 and the like; the traction mechanism is a screw mechanism, the driving device is a motor, the traction mechanism and the motor can be combined to be also called an electric push rod, a push rod motor, an electric cylinder or a linear actuator, and the electric push rod is an electric driving device which converts the rotary motion of the motor into the linear reciprocating motion of the push rod.
The brake drum 2 is fixedly connected to the wind turbine rotor 1 so that it rotates synchronously with the rotor 1 (see fig. 1).
The fixed chassis 18 is fixedly connected with the stator central shaft 8 of the wind driven generator.
Two adjacent end portions of the two brake shoes 15 are hinged and fixed on one side of a fixed chassis 18 through a shoe rotating shaft 17, and the two adjacent end portions serve as the rotating centers of the two brake shoes.
The lever rotating shaft 16 is inserted into a round hole at the other side of the fixed chassis 18 and can rotate freely, and the upper end of the lever rotating shaft is of a flat and slightly wide plate structure and is arranged between the two brake shoes 15.
As shown in fig. 4 and 5, the two brake shoes are tensioned by two return springs and sleeved between the shoe rotating shaft and the lever rotating shaft, and two side surfaces of the flat upper end of the lever rotating shaft 16 in the thickness direction of the wider plate structure are attached to the brake shoes.
The rocker arm 9 is fixedly connected with the lower end of the lever rotating shaft 16, which is positioned below the fixed chassis 18, and after the outer end of the rocker arm 9 applies force, the lever rotating shaft 16 generates rotating moment, so that the two brake shoes 15 are opened against the return spring.
The connecting bracket 14 is fixed to a flange at the lower end of the stator center shaft 8.
The right angle of the steering connecting piece 13 in the shape of a right-angled triangle plate is provided with a hole for connecting a steering rotating shaft 19, the steering connecting piece 13 is connected to the connecting bracket 14 through the steering rotating shaft 19, the steering connecting piece 13 can rotate around the steering rotating shaft 19, and the other two vertex angle ends of the steering connecting piece 13 are a front connecting end close to the rocker arm 9 and a rear connecting end far away from the rocker arm 9.
The reset tension spring bracket 11 is also fixed on a flange of a stator central shaft 16 at the lower end of the stator. One end of an additional reset tension spring 10 is connected to the reset tension spring support 11, and the other end of the additional reset tension spring 10 is connected with the rocker arm 9.
The front connecting end of one end of the steering connecting piece 13 is connected to a reset tension spring bracket 11 through an additional reset tension spring 10; the rear connection end of the steering link 13 is connected in series to a movable push rod 51 at the upper end of the electric push rod 5 through a wire rope 3, a retaining tension spring 4, and a wire rope 3'. The electric push rod 5 is fixed on the tower 7 through the anchor ear 6.
When braking, the electric push rod 5 is powered, the motor of the electric push rod 5 rotates towards a certain direction, so that the electric push rod is shortened, the steel wire ropes 3' and 3 are tensioned, and the tension spring 4 is kept stretched. When the electric push rod 5 is shortened to a certain length, the tension spring 4 is kept to be extended for a certain distance, so that a certain tension force is exerted on the steel wire rope 3', the original downward tension force is changed into a horizontal tension force through the steering connecting piece 13, the tension force of the externally-added reset tension spring 11 is overcome, and the rocker arm 9 drives the lever rotating shaft 16 to rotate in the horizontal direction; the upper part of the lever rotating shaft 16 is a flat cuboid which can open the brake shoe 15 after rotating, and the rotating center of the brake shoe 15 is a shoe rotating shaft 17; after the brake shoe 15 is spread, the outer edge of the brake shoe 15 is expanded, so that the brake shoe 15 is contacted and rubbed with the brake drum 2 which is fixed outside and a wind driven generator rotor and synchronously rotates; afterwards, the electric push rod 5 is continuously shortened to a shorter length, the extension spring is kept to be continuously extended, the tension forces on the steel wire ropes 3' and 3 are gradually increased, the moment on the rocker arm 9 and the lever rotating shaft 16 is increased through the connecting mechanism, the extrusion force of the brake shoe 15 and the brake drum 2 is increased, and therefore the friction force is increased, namely a certain braking force is generated; as the electric push rod 5 reaches the preset minimum length, the drum brake also generates a certain braking torque, so that the wind driven generator is braked.
When the braking of the wind driven generator is to be released, the motor of the electric push rod 5 rotates towards the opposite direction, the electric push rod 5 extends, so that the retaining tension spring 4 is loosened, the tension on the steel wire ropes 3' and 3 is reduced, the reset tension spring is additionally arranged to overcome the tension connected with the steel wire ropes so that the rocker arm 9 also moves towards the opposite direction, the extrusion force between the brake shoe 15 and the brake drum 2 is reduced until the extrusion force is completely zero after the brake shoe is disengaged, and the braking torque is gradually reduced until the extrusion force is zero.
The braking device and the braking method of the vertical axis wind turbine provided by the novel invention are described in detail above. It will be apparent to those skilled in the art that various modifications can be made without departing from the spirit of the invention, and such modifications will fall within the scope of the invention.
Claims (10)
1. A mechanical brake device of a vertical axis wind generating set is characterized in that: the vertical axis wind turbine comprises a drum brake, a brake drum, a brake shoe, an operating part and a control part, wherein the drum brake is arranged on a wind wheel of the vertical axis wind turbine, the brake drum in the drum brake is fixed on an outer rotor of a generator set, the brake shoe is arranged on a stator of the vertical axis wind turbine, which is arranged in the rotor, and corresponds to the inner side surface of the brake drum, the operating part is arranged on the drum brake in a displaceable manner and is connected with the stator, the operating part is in contact with the brake shoe, and the displacement of the operating part causes the brake shoe to be opened and closed to brake the brake drum or release; the connecting mechanism comprises a pulling device, the pulling device is connected with the operating piece, and the pulling device is connected with a driving device.
2. Mechanical braking device of a vertical axis wind turbine according to claim 1, characterized in that: the connecting mechanism also comprises an additional reset tension spring which is arranged on the stator or the tower column, and the additional reset tension spring is arranged between the operating piece and the stator; and/or the presence of a gas in the gas,
a retaining tension spring is provided on a connecting cable between the pulling device and the operating member.
3. Mechanical braking device of a vertical axis wind turbine according to claim 1, characterized in that: the operating part is a lever rotating shaft which is rotatably fixed on the stator, the part of the lever rotating shaft, which is arranged between two brake shoes hinged on the stator and provided with springs, is in the shape of a flat and wide plate, the lever rotating shaft is connected with a rocker arm, and the rocker arm is connected with the traction device.
4. Mechanical braking device of a vertical axis wind turbine according to claim 2, characterized in that: the operating part is a lever rotating shaft which is rotatably fixed on the stator, the part of the lever rotating shaft, which is arranged between the two brake shoes hinged on the stator and provided with the spring, is in the shape of a flat and wide plate, the lever rotating shaft is connected with a rocker arm, and the rocker arm is connected with the additional reset tension spring and the traction device.
5. Mechanical braking device of a vertical axis wind turbine according to one of claims 1 to 4, characterized in that: the connecting mechanism further comprises a steering connecting piece which is rotatably arranged on the stator or the tower column through a steering rotating shaft, two connecting ends are arranged on the steering connecting piece, a connecting steel wire rope is arranged between the front connecting end close to the rocker arm and the lever rotating shaft to be connected, one end of the steel wire rope is connected to the rear connecting end far away from the rocker arm, and the other end of the steel wire rope extends downwards along the tower column to be connected with the traction device.
6. Mechanical braking device of a vertical axis wind turbine according to claim 5, characterized in that: the distance from the front connecting end on the steering connecting piece to the axle center of the steering rotating shaft is not more than the distance from the rear connecting end to the axle center of the steering rotating shaft.
7. Mechanical braking device of a vertical axis wind turbine according to claim 5, characterized in that: the rear connecting end extends out of the stator or the periphery of the tower column below the stator.
8. Mechanical braking device of a vertical axis wind turbine according to claim 5, characterized in that: the steering connecting piece is a right-angle triangular plate, the steering rotating shaft is connected with the right-angle end of the right-angle triangular plate, and the front connecting end and the rear connecting end are respectively arranged at the other two top corners of the triangular plate.
9. Mechanical braking device of a vertical axis wind turbine according to claim 5, characterized in that: the connecting mechanism also comprises a retaining tension spring which is arranged on the steel wire rope connected between the steering connecting piece and the traction device, namely the steel wire rope is disconnected, and the retaining tension spring is connected between the steel wire rope and the traction device.
10. Mechanical braking device of a vertical axis wind turbine according to one of claims 1 to 4, characterized in that: the traction device is a hydraulic or pneumatic device, a cylinder body is fixed with the tower column, a piston rod extending out of the cylinder body is connected with a connecting inhaul cable between the traction device and the operating piece, and the driving device connected with the cylinder body is a hydraulic or pneumatic system; or,
the traction device comprises a push rod mechanism, the driving device is a motor, the push rod mechanism is a spiral mechanism, a nut in the push rod mechanism and the motor are fixed on the tower column, a screw rod is in threaded connection with the nut, one end of the screw rod is connected with a connecting inhaul cable between the traction device and the operating part, and the other end of the screw rod is connected with the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320793884.1U CN203670099U (en) | 2013-12-03 | 2013-12-03 | Mechanical braking device of vertical axis wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320793884.1U CN203670099U (en) | 2013-12-03 | 2013-12-03 | Mechanical braking device of vertical axis wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670099U true CN203670099U (en) | 2014-06-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320793884.1U Expired - Fee Related CN203670099U (en) | 2013-12-03 | 2013-12-03 | Mechanical braking device of vertical axis wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727681A (en) * | 2020-12-29 | 2021-04-30 | 诸暨和创电机科技有限公司 | Rope traction type speed reducing device and rope traction type braking system of wind driven generator |
-
2013
- 2013-12-03 CN CN201320793884.1U patent/CN203670099U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727681A (en) * | 2020-12-29 | 2021-04-30 | 诸暨和创电机科技有限公司 | Rope traction type speed reducing device and rope traction type braking system of wind driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20211203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |