A vertical axis wind turbine

Abstract

The application discloses a vertical shaft wind engine, which comprises a rotor, an impeller, a plurality of blades, a rotating shaft, a shaft sleeve, a sliding sleeve and a plurality of transmission mechanisms, the rotating shaft is arranged in the shaft sleeve, the sliding sleeve is arranged on the shaft sleeve, the impeller and the rotor are arranged on the sliding sleeve, the upper end of the rotating shaft is provided with the blades which are arranged in a circumferential shape and are uniformly spaced, the lower end shaft body of the impeller is rotatably arranged on the rotating shaft through a limiting mechanism, the limiting mechanism comprises a support, a rotating disc, a limiting body I, two rotating stop bodies, two sliding rods, a connecting seat and a tension spring, the lower end shaft body of the impeller is provided with the rotating disc, the lower end of the rotating disc is provided with the limiting body I, the support is fixedly connected with the rotating shaft through a supporting rod, the upper end of the support is provided with the two rotating stop bodies which are rotatably arranged in an elastic mode, and the limiting body I is located between the two rotating stop bodies. Compared with the prior art, the vertical shaft wind engine has good reliability and is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbines, in particular to the technical field of vertical axis wind turbines. Background Art

[0002] Blades are the devices that convert wind energy into mechanical energy. Parameters such as the structure, shape, and size of the blades directly affect the efficiency and power of a wind turbine. Currently, high-power wind turbines are still dominated by three-bladed horizontal-axis wind turbines, while the power of vertical-axis wind turbines cannot yet reach the same level as horizontal-axis wind turbines. One of the main reasons for this disparity is that the blades currently used in vertical-axis wind turbines cannot fully overcome wind resistance. Furthermore, due to the uncertainty of wind speed, strong winds often cause wind turbines to overload and damage the generator. Currently, when encountering strong winds, the main method used is to stop the turbine. Adding a parking device increases the complexity and cost of the wind turbine.

[0003] The application number is CN200910071740.3, which is a limit unloading device for movable blades on a vertical axis wind turbine. It consists of a limit block, a limit seat, two pawls, an iron block, an electromagnet, two connecting rods, an angular contact ball bearing, two connecting pieces, a telescopic shaft and a limit baffle. During normal operation of the vertical axis wind turbine, the iron block is kept at the top position of the axial magnet slot by the action of a spring in the shell, the pawl is lifted up by the action of the connecting rod, and the limit baffle on the lower end face of the limit block is restricted between the inner end faces of the two pawls, so that the blade can only rotate within a range of degrees; in case of strong wind, the electromagnet When the magnet is energized, the iron block moves downward under the attraction of the electromagnet, and the pawl is driven by the connecting rod to a low position. The limit baffle on the lower end face of the limit block is no longer restricted by the two pawls, and the blades can rotate freely within 360 degrees to achieve the effect of unloading protection. When the wind speed returns to normal, the electromagnet is de-energized, and the iron block returns to the top position of the magnet slot under the action of the spring in the housing. The pawl is lifted up by the connecting rod. When the limit baffle on the lower end face of the limit block rotates to the outer end face position of the pawl, the pawl is squeezed by the connecting rod to the spring in the housing and moves downward, and the limit block returns to the working position, allowing the blades to resume operation. Since the iron block is driven by an electromagnet, it is inevitable that it will fail during use, resulting in poor reliability. In addition, during actual operation, since the electromagnet rotates with the limit seat, it is inconvenient to connect the electromagnet power supply, making it inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a vertical axis wind turbine that is reliable and easy to use.

[0005] In order to achieve the above object, the application provides a vertical axis wind turbine, which comprises a rotor, an impeller, a plurality of blades, a rotating shaft, a shaft sleeve, a sliding sleeve and a plurality of transmission mechanisms, the rotating shaft is arranged in the shaft sleeve, the sliding sleeve is arranged on the shaft sleeve, the impeller and the rotor are arranged on the sliding sleeve, the upper end of the rotating shaft is provided with the blades which are arranged in a circumferential shape and are uniformly spaced, the lower end shaft body of the impeller is rotatably arranged on the rotating shaft through a limiting mechanism, the limiting mechanism comprises a support, a rotating disc, a limiting body I, two rotating stop bodies, two slide rods, a connecting seat and a tension spring, the lower end shaft body of the impeller is provided with the rotating disc, the lower end of the rotating disc is provided with the limiting body I, the support is fixedly connected with the rotating shaft through a supporting rod, the upper end of the support is provided with the two rotating stop bodies which are rotatably arranged, the limiting body I is located between the two rotating stop bodies, so that the horizontal rotation angle of the rotating disc is not more than 90 degrees, the support is provided with the two slide rods, the two slide rods are respectively arranged outside the two rotating stop bodies, the lower end of the slide rod is provided with the connecting seat, the connecting seat and the lower end of the support are provided with the tension spring, the sliding sleeve and the connecting seat are provided with the transmission mechanisms, and the connecting seat moves upward or downward under the drive of the transmission mechanisms.

[0006] Preferably, the transmission mechanism comprises a supporting body, a rotating arm, a connecting arm I and a connecting arm II, the rotating arm is hingedly connected on the supporting body, one end of the rotating arm is hingedly connected with the connecting seat through the connecting arm I, the other end of the rotating arm is hingedly connected with a rotating seat through the connecting arm II, and the rotating seat is rotatably arranged on the sliding sleeve.

[0007] Preferably, the rotating arm is provided with a counterweight body, and the counterweight body is close to the connecting arm I.

[0008] Preferably, the lower end of the supporting body is provided with a limiting body II for limiting the angle of clockwise rotation of the rotating arm.

[0009] Preferably, the front and rear ends of the sliding sleeve are provided with seat bodies I, the seat bodies I are provided with guide rods, the guide rods are provided with ball linear bearings, and the ball linear bearings are fixedly connected with the shaft sleeve through seat bodies II.

[0010] Preferably, the rotor and the impeller are fixedly connected through a plurality of connecting bodies.

[0011] Preferably, the shaft sleeve is provided with supporting rods which are arranged in a circumferential shape and are spaced, the supporting rods are provided with pipe bodies, and the rotor is located in the pipe bodies.

[0012] Preferably, the impeller comprises resistance type blades.

[0013] Preferably, the rotating stop bodies are rotatably arranged on the support through connecting shafts, and one end of the connecting shaft close to the center of the support is fixedly connected with the support through a spring.

[0014] The beneficial effects of the present application: the impeller rotates at high speed under the action of wind force in strong wind, the impeller drives the rotor to rotate and generates lift through the connecting body, the rotor drives the sliding sleeve to move upward, the sliding sleeve drives the connecting arm II upward through the rotating seat, the connecting arm II pushes the rotating arm to rotate clockwise, the rotating arm pulls the connecting arm I to move downward, at this time, the connecting seat moves downward under the action of the tension spring, the connecting seat drives the sliding rod to move downward to release the blocking of the rotating blocking body, at this time, the rotating arm is blocked by the limiting body II and cannot continue to rotate clockwise, and since the rotating blocking body is not blocked by the sliding rod, when the blade drives the limiting body I to rotate through the rotating disc, the rotating blocking body cannot block the limiting body I, and the blade can freely rotate within 360° to achieve the effect of unloading protection, compared with the prior art, the present application has good reliability and is convenient to use.

[0015] The features and advantages of the present application will be described in detail in conjunction with the embodiments and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a vertical axis wind turbine of the present application;

[0017] Figure 2 is a partial top view of the limiting mechanism.

[0018] In the figure: 1-rotor, 2-impeller, 3-blade, 4-rotating shaft, 5-shaft sleeve, 6-sliding sleeve, 7-transmission mechanism, 8-limiting mechanism, 9-seat I, 10-guide rod, 11-roller linear bearing, 12-seat II, 13-connecting body, 14-branch rod, 15-tube body, 21-resistance type blade, 71-supporting body, 72-rotating arm, 73-connecting arm I, 74-connecting arm II, 75-rotating seat, 76-limiting body II, 77-counterweight, 81-stand, 82-rotating disc, 83-limiting body I, 84-rotating blocking body, 85-sliding rod, 86-positioning body, 87-connecting seat, 88-tension spring, 89-connecting shaft, 86-spring. EMBODIMENT

[0019] Reference Figure 1 , 2The vertical axis wind motor of the present application comprises a rotor 1, an impeller 2, a plurality of blades 3, a rotating shaft 4, a shaft sleeve 5, a sliding sleeve 6 and a plurality of transmission mechanisms 7, the rotating shaft 4 is arranged in the shaft sleeve 5, the sliding sleeve 6 is arranged on the shaft sleeve 5, the impeller 2 and the rotor 1 are arranged on the sliding sleeve 6, the upper end of the rotating shaft 4 is provided with the blades 3 arranged in a circumferential shape and uniformly spaced, the lower end shaft body of the impeller 2 is rotatably arranged on the rotating shaft 4 through a limiting mechanism 8, the limiting mechanism 8 comprises a support 81, a rotating disc 82, a limiting body I 83, two rotating stop bodies 84, two sliding rods 85, a connecting seat 87 and a tension spring 88, the lower end shaft body of the impeller 2 is provided with the rotating disc 82, the lower end of the rotating disc 82 is provided with the limiting body I 83, the support 81 is fixedly connected with the rotating shaft 4 through a supporting rod 80, the upper end of the support 81 is provided with the two rotating stop bodies 84 rotatably arranged, the limiting body I 83 is located between the two rotating stop bodies 84, so that the horizontal rotation angle of the rotating disc 82 is not more than 90 degrees, the support 81 is provided with the two sliding rods 85, the two sliding rods 85 are respectively blocked outside 841 of the two rotating stop bodies 84, the lower end of the sliding rod 85 is provided with the connecting seat 87, the connecting seat 87 and the lower end of the support 81 are provided with the tension spring 88, the sliding sleeve 6 and the connecting seat 87 are provided with the transmission mechanism 7, the connecting seat 87 moves upward or downward under the drive of the transmission mechanism 7, the transmission mechanism 7 comprises a supporting body 71, a rotating arm 72, a connecting arm I 73 and a connecting arm II 74, the supporting body 71 is provided with the rotating arm 72 hingedly connected, one end of the rotating arm 72 is hingedly connected with the connecting seat 87 through the connecting arm I 73, the other end of the rotating arm 72 is hingedly connected with a rotating seat 75 through the connecting arm II 74, the rotating seat 75 is rotatably arranged on the sliding sleeve 6, the rotating arm 72 is provided with a counterweight 77, the counterweight 77 is close to the connecting arm I 73, the lower end of the supporting body 71 is provided with a limiting body II 76 for limiting the angle of the clockwise rotation of the rotating arm 72, the front and rear ends of the sliding sleeve 6 are provided with seat bodies I 9, the seat bodies I 9 are provided with guide rods 10, the guide rods 10 are provided with ball linear bearings 11, the ball linear bearings 11 are fixedly connected with the shaft sleeve 5 through seat bodies II 12, the rotor 1 and the impeller 2 are fixedly connected through a plurality of connecting bodies 13, the shaft sleeve 5 is provided with support rods 14 arranged in a circumferential shape and spaced, the support rods 14 are provided with pipe bodies 15, the rotor 1 is located in the pipe body 15, the impeller 2 comprises resistance type blades 21, the rotating stop bodies 84 are rotatably arranged on the support 81 through connecting shafts 89, one end of the connecting shaft 89 close to the center of the support 81 is fixedly connected with the support 81 through a spring 86.

[0020] The working process of the present application is as follows:

[0021] The vertical axis wind motor in the application rotates at high speed under the action of wind force in strong wind, the impeller 2 drives the rotor 1 to rotate and generate lift through the connecting body 13, the rotor 1 drives the sliding sleeve 6 to move upward, the sliding sleeve 6 drives the connecting arm II 74 upward through the rotating seat 75, the connecting arm II drives the rotating arm 72 to rotate clockwise, the rotating arm 72 drives the connecting arm I 73 to move downward, at this time, the connecting seat 87 moves downward under the action of the tension spring 88, the connecting seat 87 drives the sliding rod 85 to move downward to remove the block of the rotating block 84, at this time, the rotating arm 72 is blocked by the limiting body II 76 and cannot continue to rotate clockwise, since the rotating block 84 is not blocked by the sliding rod 85, the blade 3 drives the limiting body I 83 to rotate through the rotating disc 82, the rotating block 84 cannot block the limiting body I 83, the blade can rotate freely within 360°, so as to achieve the unloading protection effect, when the wind speed returns to normal, the rotating speed of the impeller 2 is reduced, the impeller 2 drives the rotor 1 to rotate to reduce the lift generated through the connecting body 13, at this time, the sliding sleeve 6 descends, the sliding sleeve 6 drives the connecting arm II 74 downward through the rotating seat 75, the connecting arm II drives the rotating arm 72 to rotate counterclockwise, the rotating arm 72 drives the connecting arm I 73 to move upward, at this time, the connecting seat 87 compresses the tension spring 88 under the action of the connecting arm I 73, the connecting seat 87 drives the sliding rod 85 to move upward to block the rotating block 84, when the blade 3 drives the limiting body I 83 to rotate through the rotating disc 82, the limiting body I 83 can drive the rotating block 84 to rotate away from the sliding rod 85, so that the limiting body I 83 returns to the normal working position.

[0022] The above examples are illustrative of the application and are not limiting of the application, any simple transformation of the application belongs to the protection scope of the application.

Claims

1. A vertical axis wind motor, characterised in that: The utility model provides a rotatable propeller, including rotor (2), impeller (2), a plurality of blades (3), rotating shaft (4), shaft sleeve (5), sliding sleeve (6) and a plurality of transmission mechanism (7), the rotating shaft (4) is equipped in the shaft sleeve (5), the shaft sleeve (5) is equipped with sliding sleeve (6), the sliding sleeve (6) is equipped with rotor (2) and propeller (1), the upper end of rotating shaft (4) is equipped with the blade (3) that is arranged in the circumferential interval even, the lower end shaft of rotor (2) is rotatablely equipped on rotating shaft (4) through limiting mechanism (8), limiting mechanism (8) includes support (81), rotating disc (82), limiting body I (83), two rotating stop body (84), two slide rod (85), connecting seat (87) and tension spring (88), the lower end shaft of rotor (2) is equipped with rotating disc (82), the lower end of rotating disc (82) is equipped with limiting body I (83), support (81) is fixedly connected with rotating shaft (4) through support rod (80), the upper end of support (81) is equipped with two elastic rotation set rotating stop body (84), limiting body I (83) is located between two rotating stop body (84), makes the horizontal rotation angle of its rotating disc (82) not exceed 90 degrees, support (81) is equipped with two slide rod (85), two slide rod (85) is respectively blocked in the outside (841) of two rotating stop body (84), the lower end of slide rod (85) is equipped with connecting seat (87), and the lower end between connecting seat (87) and support (81) is equipped with tension spring (88), and sliding sleeve (6) is equipped with transmission mechanism (7) between connecting seat (87), and connecting seat (87) is moved upwards or downwards under the drive of transmission mechanism (7); The transmission mechanism (7) includes a support body (71), a rotating arm (72), a connecting arm I (73), and a connecting arm II (74), the support body (71) is provided with a hinged connecting rotating arm (72), one end of the rotating arm (72) is hingedly connected with the connecting seat (87) through the connecting arm I (73), the other end of the rotating arm (72) is hingedly connected with the rotating seat (75) through the connecting arm II (74), and the rotating seat (75) is rotatably arranged on the sliding sleeve (6); The rotating arm (72) is provided with a counterweight (77) close to the connecting arm I (73); The lower end of the support body (71) is provided with a limiting body II (76) for limiting the clockwise rotation angle of the rotating arm (72); Both ends of the sliding sleeve (6) are provided with seat bodies I (9), the seat bodies I (9) are provided with guide rods (10), the guide rods (10) are provided with ball linear bearings (11), and the ball linear bearings (11) are fixedly connected with the shaft sleeve (5) through seat bodies II (12); The rotating stop bodies (84) are rotatably arranged on the support (81) through connecting shafts (89), and one end of the connecting shaft (89) close to the center of the support (81) is fixedly connected with the support (81) through a spring (86).

2. A vertical axis wind motor as claimed in claim 1 wherein: The rotor (1) is fixedly connected with the impeller (2) through a plurality of connecting bodies (13).

3. A vertical axis wind motor as claimed in claim 1, characterised in that: The shaft sleeve (5) is provided with a plurality of circumferentially and spacedly arranged supporting rods (14), and the supporting rods (14) are provided with pipe bodies (15), and the rotor (1) is located in the pipe bodies (15).

4. A vertical axis wind motor as claimed in claim 1, characterised in that: The impeller (2) comprises resistance type blades (21).

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