WO2016183942A1

WO2016183942A1 - Linear rack-based rotor blade adjustment mechanism

Info

Publication number: WO2016183942A1
Application number: PCT/CN2015/085891
Authority: WO
Inventors: 张效新; 张导宇; 郭佳伟; 闫笑秀; 赵海平; 白俊平; 张秀国; 贾雪姣; 杨飞; 韩艳洁; 白振义; 连志超
Original assignee: 张效新
Priority date: 2015-05-16
Filing date: 2015-08-01
Publication date: 2016-11-24
Also published as: CN104929858B; CN104929858A

Abstract

Provided is a linear rack based rotor blade adjustment mechanism, comprising: a drive motor fixation disc (2), a cylindrical nacelle wall (6), a front rack fixation disc (5), a rear rack fixation disc (12), a front pressure plate (1), a rear pressure plate (8), a gear rack mechanism, a screw nut mechanism, slide bar bearing pedestals (9), a sliding rod bearing (10), and a slide bar (11). The front pressure plate (1) is connected to the drive motor fixation disc (2). Three slide bar bearing pedestals (9) are evenly disposed on the rear pressure plate (8). A blade shaft (7) passing through a bearing (13) is mounted on the cylindrical nacelle wall (6). A gear (14) is fixed to the end of the blade shaft (7) at the inner side of the cylindrical nacelle wall (6) so as to engage with a rack (15). A nut (5) is fixed to the center of the front rack fixation disc (5). A screw (3) fits the nut (5) and is connected with an output mechanism of a power unit (16). The driving method is changed by changing the structure of the blade adjustment mechanism, thereby increasing the driving stability and precision.

Description

Straight rack type wind wheel blade adjusting mechanism

Technical field

The utility model relates to the technical field of wind power generation equipment, in particular to a straight rack type wind wheel blade adjusting mechanism.

Background technique

The wind turbine blade adjusting mechanism is connected with the power unit to drive the main transmission member to move, and the windward angle of the blade is adjusted through the transmission of the transmission mechanism.

At present, some wind turbine blades are installed at a fixed angle, and some are independently adjusted for the blade angle. The blade angle is independently adjusted to have poor synchronism.

In addition, the gear structure of a single-frame impeller disclosed in the invention patent of the invention patent application No. 201410561011.7 and the utility model patent ZL 201420608931.5 is also not ideal in terms of blade angle control. The overall operation and unit power generation costs are still not satisfactory.

Summary of the invention

The purpose of the utility model is to provide a straight rack type wind wheel blade adjusting mechanism, which overcomes the deficiencies in the prior art, changes the blade adjusting mode, synchronizes the blade adjustment, reduces the daily maintenance cost, and makes the wind speed available. The scope has been greatly widened, increasing power generation efficiency.

The technical scheme of the utility model comprises a power unit with a horizontally arranged spindle; and further comprises a driving motor fixing plate, a nacelle cylinder wall, a rack fixed front plate, a rack fixed rear plate, a front pressing plate, a rear pressing plate and a rack and pinion mechanism. , screw nut mechanism, sliding rod bearing seat, sliding rod bearing, sliding rod;

The cylinder wall of the nacelle is a regular twelve-sided cylinder, and the front pressure plate is connected to the fixed plate of the driving motor. The cylinder wall of the nacelle is installed between the front platen and the rear platen, and twelve uniform arrangements are arranged on the cylinder wall of the nacelle. The hole of the assembly vane shaft, the three sliding rod bearing seats are evenly arranged on the rear pressure plate, and the three evenly arranged sliding rods pass through the sliding rod bearing through the sliding rod bearing seat and are fixed after the rack fixing front disc and the rack is fixed On the disc, twelve racks are evenly fixed between the rack-fixed front disc and the rack-fixed rear disc. The vane shaft is mounted on the cylinder wall of the nacelle by bearings, and the gear is fixed to the end of the vane shaft inside the cylinder wall of the nacelle. Engaged with the rack, the nut is fixed to the center of the rack fixed front disc, and the lead screw and the nut form a fit and are connected with the output mechanism of the power unit.

Further, the power unit of the blade adjusting device employs an electric motor.

The utility model has the following beneficial effects: the utility model adopts the screw nut mechanism and the rack and pinion transmission mechanism, changes the blade adjustment mode, synchronizes the blade angle adjustment, and makes the adjustment angle of the blade easy to control and stabilize, and can simultaneously satisfy the low The use of wind speed and high wind speed region improves the wind energy utilization efficiency of the wind turbine and increases the output power of the whole machine, thereby reducing the cost per unit of power generation; solving the problem that the output power of the prior art three-blade horizontal axis wind turbine generator is hard to increase further. Large and wind turbines can be used with narrow wind speed range and asynchronous blade angle adjustment. The utility model has the advantages of compact structure, small volume, light weight and large transmission ratio, and the blade adjusting mechanism is improved, the structure is simple and reasonable, the loss is small, the failure rate is reduced, and the daily maintenance and maintenance are convenient.

The invention of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

DRAWINGS

Figure 1 is a schematic structural view of an embodiment of the present invention;

Figure 2 is a three-sectional view of the structure of the embodiment of the present invention;

Figure 3 is a cross-sectional view of an embodiment of the present invention;

4 is an internal structural view of a straight rack type wind turbine blade adjusting mechanism according to an embodiment of the present invention;

Figure 5 is a perspective structural view of an embodiment of the present invention.

detailed description

In the figure: 1, front platen, 2, drive motor fixed plate, 3, lead screw, 4, rack fixed front plate, 5, nut, 6, nacelle cylinder wall, 7, blade shaft, 8, rear plate 9, sliding rod bearing seat, 10, sliding rod bearing, 11, sliding rod, 12, rack fixed rear disc, 13, bearing, 14, gear, 15, rack, 16, power unit, 17, adjustment mechanism overall.

Example

1 to 5, the technical solution of the present invention includes a power unit 16 with a horizontally disposed spindle, a drive motor fixed plate 2, a nacelle cylinder wall 6, a rack fixed front plate 4, a rack fixed rear plate 12, and a front portion. Pressure plate 1, rear platen 8, gear 14, rack 15, screw 3, nut 5, slide bearing housing 9, slide rod bearing 10, slide rod 11, vane shaft 7, bearing 13; power unit 16 placed Adjusting the drive unit of the unit 17 as a fixed side of the drive motor;

The adjusting mechanism as a whole 17 is a rack and pinion type adjusting mechanism; in this embodiment, the power unit 16 for adjusting the angle of the blade adopts an electric motor; the nacelle cylinder wall 6 of the adjusting mechanism 17 is a regular dodecagonal cylinder, and the front platen 1 is connected. On the drive motor fixing plate 2, the nacelle cylinder wall 6 is installed between the front platen 1 and the rear platen 8, and the nacelle cylinder wall 6 is provided with twelve uniformly arranged holes for assembling the blade shaft 7, three The slider bearing block 9 is evenly arranged on the rear platen 8, and the three evenly arranged slide bars 11 pass through the slider bearing 10 through the slider bearing block 9 and are fixed to the rack gear On the front disc 4 and the rack fixed rear disc 12, twelve racks 15 are evenly fixed between the rack fixing front disc 4 and the rack fixed rear disc 12, and the vane shaft 7 is mounted on the nacelle cylinder wall 6 by bearings. The gear shaft 14 is fixed to the inner end of the nacelle cylinder wall 6 and the end of the vane shaft 7 is engaged with the rack 15 . The nut 5 is fixed to the center of the rack fixed front disc 4 , and the lead screw 3 forms a cooperation with the nut 5 and the power unit 16 . The power output mechanism is connected. The motor power output rotates by driving the lead screw 3, drives the rack fixed front disc 4, the rack fixed rear disc 12, and each rack 15 and the slide rod 11 move in the horizontal direction, thereby realizing the rotation of each gear 14 and the vane shaft 7. Adjust the control blade rotation to change the windward angle; when the wind is large, the blade windward angle can be adjusted to the minimum, the wind resistance is reduced, and the fan is operated at full load.

According to the volume and weight of the fan, the medium-sized fan can use multiple motors to control the blade angle, and the output shafts of each motor are connected with the lead screw 3 to transmit power.

It should be noted that the detailed description of the technical solutions of the present invention by means of the preferred embodiments is illustrative and not restrictive. Those skilled in the art can modify the technical solutions described in the embodiments on the basis of the description of the present invention, or substitute some of the technical features, and the modifications or replacements do not make the corresponding technical solutions. The essence is out of the scope of the technical solutions of the embodiments of the present invention.

Claims

The utility model relates to a straight rack type wind wheel blade adjusting mechanism, which comprises a power unit (16) and an adjusting mechanism integral (17) arranged horizontally on a main shaft; characterized in that it comprises a driving motor fixing plate (2) and a nacelle cylinder wall (6) , rack fixed front disc (4), rack fixed rear disc (12), front pressure plate (1), rear pressure plate (8), gear (14), rack (15), lead screw (3), Nut (5), slide bearing housing (9), sliding rod bearing (10), sliding rod (11), vane shaft (7);

The nacelle cylinder wall (6) is a regular twelve-sided cylinder, the front pressure plate (1) is connected to the drive motor fixing plate (2), and the nacelle cylinder wall (6) is mounted on the front platen (1) and the rear platen (8) Between the cylinder wall (6) of the nacelle, there are twelve uniformly arranged holes for assembling the blade shaft (7), and the three sliding rod bearing seats (9) are evenly arranged on the rear platen (8) , three evenly arranged slide bars (11) pass through the slide bar bearing (10) through the slide bar bearing seat (9) and are fixed on the rack fixed front plate (4) and the rack fixed rear plate (12), twelve The root rack (15) is evenly fixed between the rack fixed front disc (4) and the rack fixed rear disc (12), and the vane shaft (7) is mounted on the nacelle cylinder wall (6) through a bearing, gear (14) The end of the vane shaft (7) fixed inside the nacelle cylinder wall (6) is engaged with the rack (15), and the nut (5) is fixed to the center of the rack fixed front disc (4), and the lead screw (3) is The nut (5) forms a fit and is coupled to the output mechanism of the power unit (16).
A straight rack type wind turbine blade adjusting mechanism according to claim 1, wherein the power unit of the blade adjusting mechanism employs an electric motor.
The spur rack type wind turbine blade adjusting mechanism according to claim 1, wherein the number of adjustable blades of the blade adjusting mechanism is not limited to 12, more than and less than the number or size. Changes do not affect the requirements of this right.