CN201778950U - Wind wheel mechanism for wind driven generator with vertical shaft - Google Patents

Abstract

A wind wheel mechanism for a vertical axis wind power generator, comprising a vertical main shaft and several blade units with the same structure, the several blade units are evenly distributed along the periphery of the vertical main shaft, characterized in that: the several blade units Each blade unit is provided with a horizontal beam frame and matching vertical blades, the inner end of the horizontal beam frame is fixed on the vertical main shaft, the outer end of the horizontal beam frame is provided with a first connecting seat, and the inner side of the blade is provided with a The rotation eccentric shaft is provided with a second connection seat on the rotation eccentric shaft, and the first connection seat and the second connection seat are connected through bearings. The blades of the utility model are movably connected with the horizontal beam frame, and the blades can be automatically reversed. The utility model has the advantages of simple structure, convenient manufacture, low production cost and high utilization rate of wind energy.

Description

Wind turbines for vertical axis wind turbines

technical field

The utility model relates to a wind wheel mechanism of a wind power machine, in particular to a wind wheel mechanism for a vertical axis wind power generator. the

Background technique

There are two types of wind power generators in the prior art: horizontal axis type and vertical axis type. The technology of horizontal axis wind power generators is relatively mature and occupies the main body of the current market. Horizontal axis wind turbines take up a lot of space and need to be equipped with towers, windward adjustment and blade attitude adjustment mechanisms. The structure is complex and the investment is large, which is not conducive to popularization. Although the overall structure of the vertical axis fan is much simpler than that of the horizontal axis fan, the blades of the wind rotor of the vertical axis fan are mostly fixed, and the utilization rate of wind energy is low. The Chinese patent application No. 200910012045.x discloses a technical solution for mechanically adjusting the windward angle of the sail through the command of the controller. The structure is complex and the cost is high. The Chinese patent application with the publication number CN101761448A discloses a louvered blade structure for a vertical axis fan, which can realize the automatic opening and closing of the blades in two states of downwind and windward, and its structure is relatively complicated. In production, there is an urgent need for a wind wheel mechanism that is simple in structure, easy to manufacture, low in production cost, and high in wind energy utilization. the

Utility model content

The problem to be solved by the utility model is to provide a wind wheel mechanism for a vertical axis wind power generator, which can realize the automatic reversing of the blades, has a simple structure, is convenient to manufacture, has low production cost, and has a high utilization rate of wind energy. the

The utility model adopts the following technical scheme, including a vertical main shaft and several blade units with the same structure, and the several blade units are uniformly distributed along the periphery of the vertical main shaft, and it is characterized in that: each blade unit of the several blade units is designed There are horizontal beams and matching vertical blades. The inner end of the horizontal beams is fixed on the vertical main shaft. The eccentric shaft is provided with a second coupling seat, and the first coupling seat and the second coupling seat are connected through bearings. The principle is: the blades are movably connected to the outer end of the horizontal beam frame through the rotation eccentric shaft, and the rotation eccentric shaft divides the blades into two parts, wide and narrow. When the blades rotate with the wind wheel as a whole, they can follow the wind rotation. When the blade turns to the state of running against the wind, because the wide and narrow sides of the blade are inconsistent with the wind force, the same as the wind vane principle, the wind force makes the wide surface of the blade always be at the front end of the wind direction, and the direction of the entire blade is consistent with the wind direction. There is no headwind resistance; when the blades turn to the downwind running state, the wind force and the limit effect of the horizontal beam frame make the blades close to the horizontal beam frame into a windward state, and the blades bear the wind force to generate torque, so that the wind wheel rotates along the vertical axis, and the vertical axis drives Generators generate electricity. When the wind comes from any direction, there are always blades in the downwind state. The blades on the downwind side are subjected to wind force to generate torque, and the blades on the upwind side rotate with the wind in the same direction as the wind without wind resistance. This structure realizes the automatic reversing of the blades and makes efficient use of wind force. the goal of. the

One improvement is that the horizontal beam includes an upper beam and a lower beam. The upper beam frame and the lower beam frame are set to facilitate matching with the rectangular blade structure. the

Another improvement is that the blade is a cloth sailboard structure. This structure is light and handy, and production cost is low. the

Another improvement is that the distance L between the axis of the self-rotating eccentric shaft and the narrow end edge of the blade is between 2/5 and 1/5 of the width of the blade. With this structure, the connection force between the blade and the horizontal beam frame is more balanced, and the overall operation of the wind wheel is more stable. the

The utility model has the advantages of simple structure, convenient manufacture, low production cost and high utilization rate of wind energy. the

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of an embodiment of the utility model. the

Figure 2 is a schematic view of the blade structure. the

Fig. 3 is a schematic diagram of the dynamic principle of the top view structure of an embodiment of the present invention. the

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3, an embodiment of the utility model includes a vertical main shaft 1 and several blade units 2 with the same structure, and the several blade units 2 are evenly distributed along the periphery of the vertical main shaft 1, and It is characterized in that: each blade unit 2 of the several blade units 2 is provided with a horizontal beam frame 3 and a matching vertical blade 4, the inner end of the horizontal beam frame 3 is fixed on the vertical main shaft 1, and the outer end of the horizontal beam frame 3 The end is provided with a first coupling seat 7, the inner side of the blade 4 is provided with a rotation eccentric shaft 5 extending in the vertical direction, and a second coupling seat 6 is provided on the rotation eccentric shaft 5, and the first coupling seat 7 and the second coupling seat 6 pass through the bearing connect. The principle is: the blade 4 is movably connected to the outer end of the horizontal beam frame 3 through the rotation eccentric shaft 5, and the rotation eccentric shaft 5 divides the blade 4 into two parts, the wide width and the narrow width, and the blade 4 can rotate with the wind wheel as a whole. Rotate with the wind along the rotation eccentric axis 5. When the blade 4 turns to the running state against the wind, because the wide and narrow sides of the blade 4 are inconsistent with the wind force, the same as the principle of the wind vane, the wind force makes the wide surface of the blade 4 always be located at the front end of the wind direction, and the direction of the entire blade 4 Consistent with the wind direction, the blade 4 has no headwind resistance; when the blade 4 turns to the downwind running state, the wind force and the limit effect of the horizontal beam frame 3 make the blade 4 close to the horizontal beam frame 3 to be in the windward state, and the blade 4 bears the wind force to generate torque, thereby The wind wheel is rotated along the vertical main shaft 1, and the vertical main shaft 1 drives the generator to generate electricity. When the wind comes from any direction, there are always blades 4 in a downwind state. The blades 4 on the downwind side are subjected to wind force to generate torque, and the blades 4 on the upwind side rotate with the wind in the same direction as the wind without wind resistance. This structure realizes the automatic reversing of the blades. The purpose of efficient use of wind power. the

One improvement is that the horizontal beam frame 3 includes an upper beam frame and a lower beam frame. The upper beam frame and the lower beam frame are set to facilitate matching with the rectangular blade structure. the

Another improvement is that the blade 4 is a cloth sailboard structure. This structure is light and handy, and the production cost is low. the

As shown in FIG. 2 , another improvement is that the distance L between the axis of the self-rotating eccentric shaft 5 and the narrow end edge of the blade is between 2/5 and 1/5 of the width of the blade. A preferred embodiment is that L is 1/3 of the blade width. By adopting this structure, the connection force between the blade 4 and the horizontal beam frame 3 is more balanced, and the overall operation of the wind wheel is more stable. the

The direction of rotation of the wind wheel is determined by the arrangement of the axial position of the self-rotating eccentric shaft 5 on the blade 4 . When the blade 4 is located at the alternate position from the downwind state to the upwind state (that is, the farthest end in the downwind direction), for the blade structure with the axis of the rotation eccentric shaft 5 on the left side, the wind wheel rotates counterclockwise; the blade structure on the right side, The wind wheel rotates clockwise. the

Equivalent transformations of the same structure similar to the utility model all fall into the protection scope of the utility model. the

Claims (4)

1. A wind wheel mechanism for a vertical axis wind power generator, comprising a vertical main shaft and several blade units identical in structure, said several blade units being evenly distributed along the periphery of the vertical main shaft, characterized in that: said several Each blade unit of the blade unit is provided with a horizontal beam frame and a matching vertical blade. The rotation eccentric shaft extending in the direction of rotation, the second connection seat is arranged on the rotation eccentric shaft, and the first connection seat and the second connection seat are connected through bearings. 2 . A wind turbine mechanism for a vertical axis wind power generator according to claim 1 , wherein the horizontal girder includes an upper girder and a lower girder. 3 . 3. A wind wheel mechanism for a vertical axis wind power generator according to claim 1 or 2, characterized in that: the blades are cloth sail panels. 4. A wind wheel mechanism for a vertical axis wind generator according to claim 3, characterized in that: the distance L between the axis of the self-rotating eccentric shaft and the narrow end edge of the blade is 1/2 of the width of the blade Between 2/5 and 1/5.

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