CN211819784U

CN211819784U - Telescopic blade

Info

Publication number: CN211819784U
Application number: CN202020489928.1U
Authority: CN
Inventors: 顾婷
Original assignee: Hebei Suntien New Energy Technology Co Ltd
Current assignee: Hebei Suntien New Energy Technology Co Ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-10-30
Anticipated expiration: 2030-04-07

Abstract

The utility model discloses a retractable blade, including main blade and vice blade, in vice blade slidable mounting main blade, vice blade root fixed connection is at electric telescopic handle's flexible end, electric telescopic handle fixed mounting is at the root of main blade. The utility model discloses an electric telescopic handle drives the vice blade and slides at the main blade inner chamber, realizes the change of the whole length of blade, and the shell fragment that sets up on the vice blade can improve the stability of vice blade when vice blade removes.

Description

Telescopic blade

Technical Field

The utility model relates to a wind energy utilizes technical field, concretely relates to retractable type blade.

Background

The wind speed and the length of the blades, i.e. the rotor radius, depend reasonably on local wind resources. Whether the blade is operated much at low wind speeds or for long periods of time above the rated wind speed. Because longer blades can capture more energy below the rated wind speed. When the wind speed reaches the rated wind speed, the redundant energy is useless. Therefore, the longer the blade and the lower the rated wind speed are at the same rated power, the more power is obtained at low wind speed, the more power generation is carried out every year, and the more obvious the benefit is obtained. The choice of blades requires economic considerations in addition to aerodynamic efficiency considerations. Since the longer the blade, the more material used, the more cost.

The wind resources change along with the change of the external environment, and the distribution of the wind resources can also generate difference in the whole life cycle of the fan. At present, a fan of an existing wind field is generally transformed by replacing a blade, so that more wind energy can be captured. And each fan manufacturer configures standard blades with different lengths according to different wind resource environments. This non-adjustable blade length condition not only results in increased blade manufacturing costs, but also increased on-site maintenance and modification costs. The retractable length blades described herein are intended to address such problems.

Disclosure of Invention

The utility model provides a to prior art not enough, the utility model provides a retractable type blade drives vice blade through electric telescopic handle and slides in the main blade inner chamber, realizes the change of the whole length of blade, and the shell fragment that sets up on the vice blade can improve vice blade's stability when vice blade removes.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides a retractable blade, includes main blade and vice blade, in vice blade slidable mounting main blade, vice blade root fixed connection is at electric telescopic handle's flexible end, electric telescopic handle fixed mounting is at the root of main blade.

Preferably, the blade assembly further comprises at least two elastic sheets, the elastic sheets are arranged between the main blade and the auxiliary blade and are connected to the outer wall of the auxiliary blade through springs.

Preferably, each spring plate is correspondingly and fixedly provided with more than two springs, and the springs are arranged on the central axes of the symmetrical spring plates.

Preferably, a clamping groove is formed in the inner wall of the main blade, a clamping block is fixedly connected to the elastic sheet, and the clamping block is matched with the clamping groove in shape.

Preferably, the cross section of the fixture block is T-shaped.

Preferably, each elastic piece is provided with more than two clamping blocks, and correspondingly, the clamping grooves are also provided with corresponding numbers.

The utility model provides a retractable blade possesses following beneficial effect: the auxiliary blade is driven to slide in the inner cavity of the main blade through the electric telescopic rod, so that the change of the integral length of the blade is realized; the shell fragment that sets up on the auxiliary blade can improve the stability of auxiliary blade when the auxiliary blade removes, prevents that the auxiliary blade from appearing rocking when removing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the fixture block of the present invention;

in the figure: 1. a main blade; 2. a secondary blade; 3. an electric telescopic rod; 5. a spring plate; 6. a spring; 7. a clamping block; 8. a clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined to clearly and completely describe the technical solutions in the embodiments of the present invention.

In the first embodiment, as shown in fig. 1 to 2, a retractable blade includes a main blade 1 and an auxiliary blade 2, the auxiliary blade 2 is slidably mounted on the main blade 1 through an electric telescopic rod 3, a sealing ring can be disposed at the joint of the main blade 1 and the auxiliary blade 2 to prevent a gap from occurring between the main blade 1 and the auxiliary blade 2, the root of the auxiliary blade 2 is fixedly connected to the retractable end of the electric telescopic rod 3, and the electric telescopic rod 3 is fixedly mounted at the root of the main blade 1. The secondary blade 2 is telescopically mounted in the primary blade 1 so that the length of the entire blade can be adjusted. When the electric telescopic rod 3 extends, the auxiliary blade 2 is driven to extend out of the main blade 1, and the total length of the blade is increased; when the electric telescopic rod 3 is shortened, the auxiliary blade 2 is driven to retract into the main blade 1, and the total length of the blades is shortened.

In a second embodiment, as a preferred technical solution of the first embodiment, the first embodiment further includes an elastic sheet 5, the elastic sheet 5 is provided with two or more than two, so as to improve a stabilizing effect of the elastic sheet 5 on the secondary blade 2, the elastic sheet 5 is disposed between the primary blade 1 and the secondary blade 2, the elastic sheet 5 is connected to an outer wall of the secondary blade 2 through a spring 6, the elastic sheet 5 plays a stabilizing role when the secondary blade 2 moves, when the secondary blade 2 extends out of the primary blade 1 by the driving of the electric telescopic rod 3 for the maximum length, the elastic sheet 5 presses the spring 6, the spring 6 is in the shortest state, the spring 6 does not shake, and the secondary blade 2 can be prevented from shaking; during vice blade 2 retracted into main blade 1 under electric telescopic handle 3's drive, spring 6 recovered the state of original length this moment, shell fragment 5 removed to electric telescopic handle 3's direction, and shell fragment 5 and spring 6 cooperation can improve vice blade 2's stability. The spring in this embodiment may be replaced by other telescopic structures, such as a telescopic rod structure, to improve the stability of the whole device.

In a third embodiment, as a preferred technical solution of the second embodiment, each elastic sheet 5 is correspondingly and fixedly mounted with more than two springs 6, and the springs 6 are mounted symmetrically to the central axis of the elastic sheet 5.

Fourth, this embodiment is taken as an optimal technical scheme of first embodiment, has seted up draw-in groove 8 on 1 inner wall of main blade, fixedly connected with fixture block 7 on the shell fragment 5, and fixture block 7 and the shape phase-match of draw-in groove 8, and the fixture block 7 cross-section is the T shape, guarantees that the area of fixture block 7 and draw-in groove 8 contact is big for the stability of shell fragment 5 assembly is high. The fixture block 7 is slidably connected in the clamping groove 8, so that the elastic sheet 5 is subjected to displacement guiding, and the instability of movement of the elastic sheet 5 is reduced. Be provided with fixture block 7 more than two on every shell fragment 5, corresponding, draw-in groove 8 also is equipped with corresponding number, is provided with a plurality of fixture blocks 7 on the shell fragment 5 and can makes 5 even atress of shell fragment, prevents that shell fragment 5 from appearing partially to and fish tail 1 inner wall of main blade when removing.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; the pattern filling in the drawings of the utility model does not represent the material of the structure, and only distinguishes the structure; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a retractable blade, its characterized in that includes main blade and vice blade, in vice blade slidable mounting main blade, vice blade root fixed connection is at electric telescopic handle's flexible end, electric telescopic handle fixed mounting is at the root of main blade.

2. The retractable blade as claimed in claim 1, further comprising at least two resilient pieces, wherein the resilient pieces are disposed between the primary blade and the secondary blade, and the resilient pieces are connected to the outer wall of the secondary blade through springs.

3. The retractable blade of claim 2 wherein each of said resilient pieces has at least two springs mounted thereon, and said springs are mounted on the central axis of the symmetrical resilient pieces.

4. The retractable blade as claimed in claim 2, wherein the inner wall of the main blade is provided with a slot, the resilient plate is fixedly connected with a block, and the block is matched with the slot.

5. The retractable blade as claimed in claim 4, wherein the cross-section of said latch is T-shaped.

6. The retractable blade as claimed in claim 4, wherein each of said resilient pieces has two or more clips, and correspondingly, there are a corresponding number of said clips.