CN210714927U

CN210714927U - Novel adjustment mechanism of umbrella-shaped wind turbine

Info

Publication number: CN210714927U
Application number: CN201922042680.4U
Authority: CN
Inventors: 包道日娜; 吴胜胜; 刘嘉文; 刘旭江; 王帅龙; 刘�东
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-06-09
Anticipated expiration: 2029-11-22

Abstract

The utility model provides a novel adjusting mechanism of an umbrella-type wind turbine, which comprises a generator hollow shaft and a push-pull rod which is in sliding fit with the generator hollow shaft and can realize axial movement, wherein a hub is fixedly arranged at one end of the generator hollow shaft, a plurality of sector gears are circumferentially arranged on the hub, the sector gears are hinged with the hub, and blades are fixedly arranged on the sector gears; one end of the push-pull rod is fixedly connected with the sliding block; the sliding block is in sliding fit with the hub, the sliding block is provided with a plurality of racks, and the racks are in meshing fit with the sector gear. The utility model discloses can synchronous shrink of real time control blade in order to reach the purpose that less area of receiving wind controlled output and protection wind energy conversion system safe operation, simultaneously because adjustment mechanism arranges inside wheel hub, centrifugal force is unlikely too big when making the blade rotate, ensures aerogenerator's safe in utilization.

Description

Novel adjustment mechanism of umbrella-shaped wind turbine

Technical Field

The utility model relates to a relevant technical field of aerogenerator specifically is a novel adjustment mechanism of umbrella-type wind energy conversion system.

Background

At present, a variable-pitch angle structure is mainly adopted for a large wind turbine to control the power and the rotating speed of the wind turbine, a fixed-pitch structure is mainly adopted for a small wind turbine, the rotating speed of the wind turbine cannot be effectively controlled in strong wind, and blades can be damaged.

For the speed limit of small wind machine in high wind, in the prior art, for example, the chinese utility model patent with publication number CN202991357U, an umbrella-shaped wind machine for actively changing the wind receiving area of the wind wheel is proposed, and when the power or the rotating speed of the wind machine exceeds the rated value, the contraction of the blades is controlled by the adjusting mechanism to reduce the wind receiving area of the wind wheel, thereby achieving the purpose of controlling the rotating speed and the power of the wind machine. Specifically, in the adjusting mechanism, one end of a connecting rod is hinged with the blade, the other end of the connecting rod is hinged with a movable seat, the movable seat is connected with a shaft through a bearing, and the blade is contracted through the movement of a control shaft. In order to ensure certain strength, the connecting rod is generally high in mass, in order to ensure smooth contraction, a hinge point of the connecting rod and the blade is generally far away from a rotation center, and the connecting rod rotates along with the blade when the blade rotates, so that the centrifugal force of the blade is high, and the axial thrust is high; in addition, the adjustment mechanism is exposed for a long time, so that wind resistance and noise are increased.

SUMMERY OF THE UTILITY MODEL

For solving the great problem of blade centrifugal force among the prior art, the utility model provides a high-efficient and simple novel adjustment mechanism, this mechanism can the synchronous shrink of real time control blade in order to reach less area control output and the purpose of protection wind energy conversion system safe operation that receives wind.

The technical scheme of the utility model as follows:

a novel adjusting mechanism of an umbrella-shaped wind turbine comprises a generator hollow shaft and a push-pull rod which is in sliding fit with the generator hollow shaft and can realize axial movement,

a hub is fixedly arranged at one end of the hollow shaft of the generator, a plurality of sector gears are arranged on the circumference of the hub, the sector gears are hinged with the hub, and blades are fixedly arranged on the sector gears;

one end of the push-pull rod is fixedly connected with the sliding block; the sliding block is in sliding fit with the hub, the sliding block is provided with a plurality of racks, and the racks are in meshing fit with the sector gear.

Furthermore, a plurality of guide rails are evenly arranged on the circumferential direction of the sliding block, and the guide rails are in sliding fit with guide rail sliding grooves formed in the hub, so that the sliding block can axially move in the hub.

Furthermore, the slider circumference is equipped with a plurality of rack mounting grooves, and rack mounting groove both sides set up the baffle, set up the rack fixed orifices on the baffle, the rack is fixed in the rack mounting groove through screw and rack fixed orifices cooperation.

Furthermore, a hinge bolt hole is formed in the wheel hub, and the sector gear is hinged to the wheel hub through a hinge bolt matched with the hinge bolt hole.

Further, the blades are fixedly mounted on the sector gear through fixing nuts.

Furthermore, the push-pull rod and the sliding block are connected in a welding mode, and the hub is fixed to the hollow shaft of the generator through a hub flange.

Furthermore, the number of the blades, the sector gear and the rack is three.

The utility model has the advantages that:

compared with the prior umbrella-shaped wind turbine regulating mechanism, the utility model has the advantages that the regulating mechanism is arranged inside the hub, so that the centrifugal force is not too large when the blades rotate, the use safety of the wind driven generator is ensured, and simultaneously, the regulating mechanism can control the synchronous shrinkage of the blades in real time to achieve the purposes of controlling the output power by a small wind area and protecting the safe operation of the wind turbine; additionally the utility model discloses arranged the rack mounting groove on the slider, make things convenient for this adjustment mechanism's dismouting and maintenance.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the adjusting mechanism of the present invention;

FIG. 2 is a schematic view of the internal structure of the wheel hub of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the slider of the present invention;

figure 4 is the utility model discloses a wheel hub spatial structure sketch map.

Reference numerals shown in the drawings:

1-blade, 2-fixing nut, 3-sector gear, 4-rack, 5-hub flange, 6-hub, 7-push-pull rod, 8-generator hollow shaft, 9-hinge bolt, 10-slide block, 11-guide rail, 12-rack fixing hole, 13-rack mounting groove, 14-baffle, 15-hinge bolt hole and 16-guide rail sliding groove.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

As shown in FIGS. 1 to 4, the utility model provides a novel adjusting mechanism of umbrella-shaped wind turbine. The composition mainly comprises: the generator comprises a blade 1, a fixing nut 2, a sector gear 3, a rack 4, a hub flange 5, a hub 6, a push-pull rod 7, a generator hollow shaft 8, a hinge bolt 9 and a sliding block 10.

Specifically, three guide rails 11 which are uniformly distributed are processed on the sliding block 10, and the guide rails 11 are in sliding fit with guide rail sliding grooves 16 in the hub 6 to realize that the sliding block 10 axially moves in the hub 6; the push-pull rod 7 is welded on the sliding block 10 and penetrates through the hub flange 5 and the generator hollow shaft 8, the hub flange 5 is fixedly connected with the generator hollow shaft 8, and the push-pull rod 7 is in sliding connection with the generator hollow shaft 8; three racks 4 are respectively fixedly arranged in a rack mounting groove 13 in the sliding block 10 through a rack fixing hole 12 on a baffle plate 14 by screws; the sector gear 3 is hinged with the hub 6 through a hinge bolt 9 to realize rotation around a hinge bolt hole 15; the rack 4 is meshed with the sector gear 3, and the sector gear 3 is driven to rotate when the rack 4 moves; the blade 1 is fixedly mounted on the sector gear 3 by means of a fixing nut 2.

The working principle of the utility model is as follows:

the motor drives the screw nut mechanism to apply axial thrust or pull force to the push-pull rod 7, so that the push-pull rod 7 moves axially in the hollow shaft 8 of the generator, the sliding block 10 is driven to move axially in the hub 6, the sliding block 10 transmits the force to the rack 4 in the rack mounting groove 13, the rack 4 drives the toothed sector gear 3 meshed with the rack to rotate, the sector gear 3 is fixed with the blade 1, the blade 1 rotates along with the rotation of the sector gear 3, the blade 1 can contract in an umbrella shape, the wind area is reduced, and the output power is controlled to protect the safe operation of the wind generating set.

Compared with the prior art, the adjusting mechanism for the umbrella-shaped wind turbine is arranged in the hub, so that the centrifugal force is not too large when the blades rotate, and the rack mounting groove is arranged on the sliding block, so that the assembly, disassembly and maintenance are convenient.

Claims

1. A novel adjusting mechanism of an umbrella-shaped wind turbine comprises a generator hollow shaft and a push-pull rod which is in sliding fit with the generator hollow shaft and can realize axial movement, and is characterized in that,

2. The novel adjusting mechanism for the umbrella-shaped wind turbine as claimed in claim 1, wherein the sliding block is uniformly provided with a plurality of guide rails in the circumferential direction, and the guide rails are in sliding fit with guide rail sliding grooves arranged in the hub, so that the sliding block can axially move in the hub.

3. The novel adjusting mechanism for the umbrella-shaped wind turbine as claimed in claim 1, wherein the sliding block is circumferentially provided with a plurality of rack mounting grooves, baffle plates are arranged on two sides of each rack mounting groove, rack fixing holes are formed in the baffle plates, and the racks are fixed in the rack mounting grooves by screws in a matched manner with the rack fixing holes.

4. The novel adjusting mechanism for the umbrella-shaped wind turbine as claimed in claim 1, wherein the hub is provided with a hinge bolt hole, and the sector gear is hinged to the hub through a hinge bolt engaged with the hinge bolt hole.

5. The novel adjusting mechanism for the umbrella-shaped wind turbine as claimed in claim 1, wherein the blades are fixedly mounted on the sector gear by fixing nuts.

6. The novel adjusting mechanism for the umbrella-shaped wind turbine as claimed in claim 1, wherein the push-pull rod and the sliding block are connected by welding, and the hub is fixed to the hollow shaft of the generator through a hub flange.

7. The novel adjusting mechanism for the umbrella-shaped wind turbine as claimed in any one of claims 1 to 6, wherein the number of the blades, the sector gear and the rack is three.