CN219012768U

CN219012768U - Variable pitch mechanism for wind power generation

Info

Publication number: CN219012768U
Application number: CN202223549717.0U
Authority: CN
Inventors: 邓婕
Original assignee: Tianjin Aikewei New Energy Technology Co ltd
Current assignee: Tianjin Aikewei New Energy Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-12
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to the technical field of wind driven generators, in particular to a pitch mechanism for wind power generation, which comprises a device shell, wherein a pitch device is arranged in the device shell, three pitch motors are arranged on the pitch device in the device shell, the tail ends of the pitch motors extend to the outside of the device shell, and first blades are fixedly arranged on the pitch motors.

Description

Variable pitch mechanism for wind power generation

Technical Field

The utility model relates to the technical field of wind driven generators, in particular to a variable pitch mechanism for wind power generation.

Background

The wind driven generator is internally provided with a variable pitch mechanism to change the rotating speed of a propeller of the wind driven generator so as to protect the whole wind driven generator in severe weather.

For example, chinese utility model CN206738061U discloses a pitch mechanism for wind power generation, which comprises a spherical hub, the outside of the spherical hub is provided with a mounting base, the upper end of the motor support is provided with a pitch motor, the end of the pitch motor shaft is provided with a pinion, the upper end of the mounting base is provided with a pitch bearing, the inside of the pitch bearing is provided with bearing internal teeth, the upper end of the pitch bearing is provided with a blade base, the upper end of the blade base is provided with a lower blade, the inside upper end of the lower blade is provided with an upper blade, the middle part of the lower end of the upper blade is provided with a magnetic body, the inside of the lower blade is provided with a support frame, the middle part of the upper end of the support frame is provided with an electromagnet, and the upper end of the support frame is provided with a spring.

The pitch control mechanism utilizes the spring when the stress area of the blade is changed, and the spring inevitably has material fatigue after long-term use to reduce the self elastic deformation capacity, thereby reducing the response speed of self pitch control.

Based on the above, there is a need to design a pitch mechanism for wind power generation to solve the above problems.

Disclosure of Invention

The utility model aims to provide a pitch mechanism for wind power generation, which solves the problems that the pitch mechanism provided in the background art utilizes a spring when the stress area of a blade is changed, and the spring is inevitably tired after long-term use, so that the self elastic deformation capacity is reduced, and the response speed of self pitch is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a wind power generation is with becoming oar mechanism, includes the device shell, the inside of device shell is provided with becomes oar ware, be provided with three on the inside become oar ware of device shell and become oar motor, the end that becomes the oar motor all extends to the outside of device shell, all fixed mounting has first flabellum on the change oar motor, the quantity of first flabellum has three, the inside cavity of first flabellum, the inside of first flabellum all movable mounting has the second flabellum, the inside of first flabellum connects fixed mounting has three electric drive piston, the end of electric drive piston all with second flabellum fixed connection.

Preferably, both sides of the inner part of the first fan blade are fixedly provided with sliding grooves, the inner parts of the sliding grooves are slidably provided with sliding rods, and one sides of the two sliding rods, which are close to each other, are fixedly connected with both sides of the second fan blade.

Preferably, a plurality of pulleys are fixedly arranged at the top end and the bottom end of the sliding rod, and the pulleys are contacted with the sliding groove.

Preferably, the top and bottom of the second fan blade are fixedly provided with movable limit baffles, the top and bottom of the first fan blade are fixedly provided with fixed baffles, and the size of the fixed baffles is larger than that of the movable limit baffles.

Preferably, the bottom fixed mounting of device shell has first ring flange, the bottom of first ring flange is provided with the second ring flange, six fixing bolts are run through to the junction of first ring flange and second ring flange.

Preferably, the bottom fixed mounting of second ring flange has the mounting panel, two screw holes have been seted up on the mounting panel, the top fixed mounting of device shell has rotation speed sensor.

Compared with the prior art, the utility model has the beneficial effects that:

1. through being provided with variable oar motor, first flabellum, the second flabellum, electric drive piston, when the rotational speed is slowed down to equipment in the in-service use, variable oar motor can drive first flabellum and second flabellum and rotate and change the wind angle and change the rotational speed, electric drive piston drives the second flabellum shrink simultaneously, and change the windward area of first flabellum and second flabellum, electric drive piston self uses the better carbon manganese steel of structure simultaneously, the above-mentioned variable oar mechanism that has put forward in the above-mentioned background art has utilized the spring when changing the blade atress area in the in-service use effectively, and the spring can not appear material fatigue and lead to self elastic deformation ability to descend after long-term use, thereby reduce the problem of self variable response speed of oar.

2. The sliding groove and the sliding rod are arranged, so that the sliding track of the second fan blade in the first fan blade can be further limited in actual use, and the connection between the second fan blade and the first fan blade is more stable; further, through the pulley, the sliding friction between the sliding chute and the sliding rod can be changed into rolling friction in actual use, so that the abrasion between the sliding chute and the sliding rod is further reduced.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present utility model;

FIG. 2 is an enlarged schematic perspective view of a part of the main structure of the present utility model;

FIG. 3 is a schematic perspective view of the main structure of the present utility model;

fig. 4 is a bottom perspective view of the structure of the present utility model.

In the figure: 100. a device housing; 110. a pitch motor; 111. a first fan blade; 112. a second fan blade; 113. an electric drive piston; 114. a chute; 115. a slide bar; 116. a pulley; 117. a fixed baffle; 118. a movable limit baffle; 119. a first flange; 120. a second flange; 121. a fixing bolt; 122. a mounting plate; 123. a rotation speed sensor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an embodiment of the present utility model is provided:

the utility model provides a wind power generation is with becoming oar mechanism, including device shell 100, all electric appliances that use in this application all are the product that can purchase directly in the market, its principle and connected mode are the prior art that is well known to the person skilled in the art, so not described again here, the inside of device shell 100 is provided with the oar ware, be provided with three change oar motor 110 on the inside oar ware of device shell 100, the end of change oar motor 110 all extends to the outside of device shell 100, all fixed mounting has first flabellum 111 on the change oar motor 110, the quantity of first flabellum 111 has three, the inside cavity of first flabellum 111, the inside of first flabellum 111 all movable mounting has second flabellum 112, the inside of first flabellum 111 connects fixed mounting has three electric drive piston 113, the end of electric drive piston 113 all is with second flabellum 112 fixed connection, through the setting of above-mentioned structure, the above-mentioned change oar mechanism that effectively solves in the above-mentioned background art in the in-service use has utilized the spring when changing blade stress area, and the spring can not hardly cause the self fatigue response to change the material problem that the self can not appear after long-term use and become the flexible speed.

The sliding grooves 114 are fixedly arranged on two sides of the inner part of the first fan blade 111, the sliding rods 115 are slidably arranged in the sliding grooves 114, one sides of the two sliding rods 115, which are close to each other, are fixedly connected with two sides of the second fan blade 112, and through the arrangement of the structure, the sliding grooves 114 and the sliding rods 115 can further limit the sliding track of the second fan blade 112 in the first fan blade 111 in actual use, so that the connection between the second fan blade 112 and the first fan blade 111 is firmer.

The top and bottom ends of the sliding rod 115 are fixedly provided with a plurality of pulleys 116, and the pulleys 116 are contacted with the sliding groove 114.

The top and bottom of the second fan blade 112 are fixedly provided with the movable limit baffle 118, the top and bottom of the first fan blade 111 are fixedly provided with the fixed baffle 117, the size of the fixed baffle 117 is larger than that of the movable limit baffle 118, and the first fan blade 111 can directly limit the progress of the second fan blade 112 in actual use by the arrangement of the structure, so that the connection between the second fan blade 112 and the first fan blade 111 is further enhanced.

The bottom fixed mounting of device shell 100 has first ring flange 119, and the bottom of first ring flange 119 is provided with second ring flange 120, and six fixing bolt 121 are run through to the junction of first ring flange 119 and second ring flange 120, through the setting of above-mentioned structure, can seal the protection with device shell 100 utilizing first ring flange 119 and second ring flange 120 in the in-service use, avoids the inside oar ware of changing of device shell 100 to expose outside the appearance trouble.

The bottom end of the second flange 120 is fixedly provided with a mounting plate 122, two threaded holes are formed in the mounting plate 122, the top end of the device housing 100 is fixedly provided with a rotation speed sensor 123, and through the arrangement of the structure, the device housing 100 can be arranged in a place where the mounting plate 122 is required in actual use; the rotation speed sensor 123 may further detect the rotation speeds of the first fan blade 111 and the second fan blade 112 during normal operation.

Working principle: in practical use, when the rotation speed of the first fan blade 111 and the second fan blade 112 needs to be reduced, the pitch motor 110 will work first, the rotation of the pitch motor 110 changes the wind angle of the first fan blade 111 and the second fan blade 112, meanwhile, the electric drive piston 113 will drive the second fan blade 112 to slide inwards in the first fan blade 111, the windward area of the first fan blade 111 and the second fan blade 112 is reduced, under the dual pitch action, the rotation speed of the first fan blade 111 and the second fan blade 112 will be reduced faster, and meanwhile, the structure of the electric drive piston 113 is stronger than the spring used by the pitch mechanism in the background technology, and is not easy to damage.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A pitch mechanism for wind power generation, comprising: the device comprises a device housing (100), wherein a pitch device is arranged in the device housing (100), three pitch motors (110) are arranged on the pitch device in the device housing (100), the tail ends of the pitch motors (110) all extend to the outside of the device housing (100), first fan blades (111) are fixedly arranged on the pitch motors (110), the number of the first fan blades (111) is three, the first fan blades (111) are hollow, second fan blades (112) are movably arranged in the first fan blades (111), three electric transmission pistons (113) are fixedly arranged in the first fan blades (111), and the tail ends of the electric transmission pistons (113) are fixedly connected with the second fan blades (112).

2. A pitch mechanism for wind power generation according to claim 1, wherein: sliding grooves (114) are fixedly arranged on two sides of the inner portion of the first fan blade (111), sliding rods (115) are slidably arranged in the sliding grooves (114), and one sides, close to each other, of the two sliding rods (115) are fixedly connected with two sides of the second fan blade (112).

3. A pitch mechanism for wind power generation according to claim 2, wherein: a plurality of pulleys (116) are fixedly arranged at the top end and the bottom end of the sliding rod (115), and the pulleys (116) are contacted with the sliding groove (114).

4. A pitch mechanism for wind power generation according to claim 1, wherein: the top and the bottom of second flabellum (112) all fixed mounting have activity limit baffle (118), the inside top and the bottom of first flabellum (111) all fixed mounting have fixed baffle (117), the size of fixed baffle (117) is all greater than activity limit baffle (118).

5. A pitch mechanism for wind power generation according to claim 1, wherein: the device is characterized in that a first flange plate (119) is fixedly arranged at the bottom end of the device shell (100), a second flange plate (120) is arranged at the bottom end of the first flange plate (119), and six fixing bolts (121) are installed at the connecting positions of the first flange plate (119) and the second flange plate (120) in a penetrating mode.

6. The pitch mechanism for wind power generation according to claim 5, wherein: the bottom fixed mounting of second ring flange (120) has mounting panel (122), two screw holes have been seted up on mounting panel (122), the top fixed mounting of device shell (100) has rotation speed sensor (123).