Blade ball shaft and round frame ball seat combined buffer type wind wheel

Abstract

The utility model discloses a blade ball shaft and round frame ball seat combined buffer type wind wheel, and relates to the technical field of wind power generation, the blade ball shaft and round frame ball seat combined buffer type wind wheel comprises a horizontal shaft support round frame, a wind wheel round frame, a blade shaft and blades fixedly arranged on the blade shaft, a mounting hole allowing the blade shaft to penetrate through is formed in the wind wheel round frame, an annular ball seat is fixedly arranged in the mounting hole, a ball block is rotationally connected in the ball seat and coaxially and fixedly connected with the blade shaft, and a first elastic pulling piece is connected between the blade shaft and the horizontal shaft support round frame; according to the novel wind wheel blade structure, under the instantaneous strong wind, the ball block and the ball seat rotate relatively, so that the blade shaft can adaptively adjust the windward angle, buffer is conducted under the action of the first elastic pull piece, and the blade shaft can reset after the instantaneous strong wind; therefore, unsafe factors of blade breakage caused by instantaneous strong wind are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to a buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat. Background Art

[0002] In our large wind rotors, the stability of the blades is related to the safety of the entire wind rotor.

[0003] The wind rotor of a traditional wind turbine adopts a three-blade cantilever beam structure. During long-term use, under the action of wind, especially instantaneous strong winds, the screws or brackets connecting the wind rotor blades often become loose and crack, thus causing safety accidents. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned related technologies, this application provides the following technical solutions:

[0005] A buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat, comprising a horizontal axis support round frame, a wind wheel round frame, a blade shaft and a blade fixedly arranged on the blade shaft, the wind wheel round frame is fixedly installed on the horizontal axis support round frame, the wind wheel round frame is provided with a mounting hole for the blade shaft to pass through, an annular ball seat is fixedly arranged in the mounting hole, a ball block is rotatably connected in the ball seat, the ball block is coaxially fixedly connected to the blade shaft, and a first elastic puller is connected between the blade shaft and the horizontal axis support round frame.

[0006] As a preferred solution of a buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat as described in the present application, the first elastic pulling member is a tension spring, one end of the tension spring is fixedly connected to the horizontal axis support round frame, and the other end is fixedly connected to one end of the blade shaft close to the horizontal axis support round frame.

[0007] As a preferred solution of a buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat described in the present application, second elastic pullers are provided at both ends of the blade shaft, and two adjacent blade shafts are connected together by the second elastic pullers.

[0008] As a preferred solution of the buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat described in the present application, the ball seat is detachably fixedly connected to the wind wheel round frame by bolts.

[0009] As a preferred solution of the buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat described in the present application, a buffer member is arranged between the ball seat and the ball block.

[0010] As a preferred solution of the buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat described in the present application, the ball seat is formed by assembling two half rings.

[0011] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0012] 1. This case adopts a new wind wheel blade structure. Under instantaneous strong wind, the ball block and the ball seat rotate relative to each other, so that the blade shaft can adaptively adjust the windward angle, and buffer under the action of the first elastic puller. After the instantaneous strong wind, it can be reset, thereby effectively reducing the unsafe factor of blade breakage caused by instantaneous strong wind;

[0013] 2. By providing a second elastic puller to connect two adjacent blade shafts together, multiple blade shafts form a mutually pulling structure, which can not only enhance the buffering effect of the first elastic puller, but also make the wind wheel more stable as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of a wind wheel in an embodiment of the present application;

[0015] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0016] Figure 3 A side cross-sectional schematic diagram of a ball seat in the application embodiment;

[0017] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle.

[0018] In the figure: 1, horizontal axis support circular frame; 2, wind wheel circular frame; 21, mounting hole; 3, blade shaft; 31, ball block; 4, blade; 5, ball seat; 6, first elastic puller; 7, second elastic puller; 8, buffer. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of this application clearer, the following Figure 1-4 The implementation methods of the present application are described in further detail.

[0020] This embodiment provides a buffer type wind wheel composed of a blade ball shaft and a round frame ball seat, see Figure 1 and Figure 2The buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat comprises a horizontal axis support round frame 1, a wind wheel round frame 2, a blade shaft 3 and a blade 4 fixedly arranged on the blade shaft 3. The wind wheel round frame 2 is fixedly installed on the horizontal axis support round frame 1 by using multiple groups of steel wire ropes to pull each other. The wind wheel round frame 2 is provided with a mounting hole 21 for the blade shaft 3 to pass through. An annular ball seat 5 is fixedly arranged in the mounting hole 21. In this case, the ball seat 5 is formed by assembling two semi-rings, and the ball seat 5 is detachably fixedly connected to the wind wheel round frame 2 by bolts, so as to facilitate on-site installation.

[0021] See also Figure 1 , Figure 3 and Figure 4 A ball block 31 is rotatably connected in the ball seat 5, and the ball block 31 is coaxially fixedly connected to the blade shaft 3. The ball block 31 and the blade shaft 3 can also be integrally formed. A buffer member 8 is arranged between the ball seat 5 and the ball block 31. The buffer member 8 is made of elastic materials such as rubber sheets. The buffer member 8 is fixedly installed on the ball seat 5 to avoid rigid collision between the ball block 31 and the ball seat 5 under the action of wind, thereby achieving a buffering effect.

[0022] See also Figure 1 and Figure 3 A first elastic puller 6 is connected between the blade shaft 3 and the horizontal axis support frame 1. In this case, the first elastic puller 6 is a tension spring. One end of the tension spring is fixedly connected to the horizontal axis support frame 1, and the other end is fixedly connected to the end of the blade shaft 3 close to the horizontal axis support frame 1. Second elastic pullers 7 are provided at both ends of the blade shaft 3. In this case, the second elastic puller 7 also adopts a tension spring, and two adjacent blade shafts 3 are connected together through the second elastic puller 7. In other embodiments, the first elastic puller 6 and the second elastic puller 7 can also be made of flexible materials with high tensile strength such as steel wire ropes.

[0023] In addition, a tension spring is fixedly connected to one side of the blade 4, and a motor with a wire rope and a wire wheel is provided on the other side. The blade 4 is pulled by the motor so that the windward angle of the blade 4 can be adjusted according to the wind force.

[0024] During specific use, the blade 4 is affected by instantaneous strong wind, and the ball block 31 rotates a certain angle in the ball seat 5, so that the blade shaft 3 and the blade 4 are deflected, which can reduce the windward area of ​​the blade 4 and thus reduce the wind resistance. In this process, the first elastic puller 6, the second elastic puller 7 and the buffer member 8 can all buffer the blade shaft 3, thereby making the wind wheel more stable and effectively reducing the unsafe factor of the blade 4 breaking caused by instantaneous strong wind, truly achieving a long-term plan.

[0025] Although the present application has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present application may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A buffer type wind wheel composed of a blade ball shaft and a round frame ball seat, characterized in that: The invention comprises a horizontal axis support circular frame (1), a wind wheel circular frame (2), a blade shaft (3), and a blade (4) fixedly arranged on the blade shaft (3); the wind wheel circular frame (2) is fixedly arranged on the horizontal axis support circular frame (1); a mounting hole (21) for the blade shaft (3) to pass through is provided on the wind wheel circular frame (2); an annular ball seat (5) is fixedly arranged in the mounting hole (21); a ball block (31) is rotatably connected in the ball seat (5); the ball block (31) is coaxially fixedly connected to the blade shaft (3); and a first elastic puller (6) is connected between the blade shaft (3) and the horizontal axis support circular frame (1).

2. The buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat according to claim 1, characterized in that: The first elastic pulling member (6) is a tension spring, one end of which is fixedly connected to the horizontal axis support circular frame (1), and the other end of which is fixedly connected to an end of the blade shaft (3) close to the horizontal axis support circular frame (1).

3. The buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat according to claim 1, characterized in that: Second elastic pull members (7) are provided at both ends of the blade shaft (3), and two adjacent blade shafts (3) are connected together via the second elastic pull members (7).

4. The buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat according to claim 1, characterized in that: The ball seat (5) is detachably fixedly connected to the wind wheel circular frame (2) by means of bolts.

5. The buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat according to claim 1, characterized in that: A buffer member (8) is provided between the ball seat (5) and the ball block (31).

6. A buffer-type wind wheel composed of a blade ball shaft and a round frame ball seat according to any one of claims 1 to 5, characterized in that: The ball seat (5) is formed by assembling two half rings.

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