CN204941789U - A kind of small-sized wind power generator with line gear speeder - Google Patents

Abstract

The utility model discloses a kind of small-sized wind power generator with multiplying gear, comprise pylon, be arranged on the cabin bracket on described pylon top rotationally, the cabin be fixed in described cabin bracket, generator, wind wheel by generator described in wind-drive, between described wind wheel and Generator, export after being connected with the input speed speedup by wind wheel and drive the line gear speeder of electrical power generators.The utility model can utilize less wind-force to generate electricity, there is miniaturization, volume is little, wind energy utilization is high, structure is simple, the advantage of low cost of manufacture, can meet the demand of users, is suitable for large-scale popularization to use and brings certain economic benefit and social benefit.

Description

A small wind power generator with a wire gear speed-increasing device

technical field

The utility model belongs to wind power generator equipment, and in particular relates to a small wind power generator with a novel linear gear speed-increasing device.

Background technique

Wind power is a kind of green energy and also a kind of renewable energy, which has a good development prospect. Wind generators, especially small wind generators, have the characteristics of small investment and flexible use, and are mainly used in the vast number of farmers, herdsmen, fishermen and island lighting in areas with wind, no electricity or electricity shortage. At present, the mainstream of the development of small wind turbines is to use direct-drive wind power generation, that is, the wind wheel is directly connected to the generator, which is the so-called "gearless structure". However, the input speed of the wind rotor of this direct-drive wind power generation is very low, which requires the motor to adopt a low-speed permanent magnet generator. Promote the use of green and renewable energy on a large scale, especially in the vast poverty-stricken areas. Therefore, it is desirable to adopt semi-direct drive wind power generation, that is, to use single-stage gear speed-up transmission. In the prior art, the transmission speed-up device of the wind power generator is generally a traditional gear speed-up mechanism, a worm gear speed-up mechanism, etc., which have the disadvantages of high manufacturing cost, large volume, small speed ratio, etc., especially the single-stage gear transmission ratio It is relatively small, generally no more than 5. If multi-stage speed increase is adopted, the structure of the gear speed increaser is relatively complicated, the volume is large, and it is difficult to miniaturize. The transmission ratio of the worm gear speed increase mechanism is relatively large, but the processing requirements of the worm gear are relatively large High, so the processing cost is also high, and the transmission efficiency of the worm gear is also very low, which is difficult to meet the needs of the majority of users. Therefore, it is inevitable to develop a new type of gear to meet the shortcomings of traditional gears in small wind power generation. Linear gear is a new type of gear based on the principle of spatial conjugate curve meshing proposed by Professor Chen Yangzhi. It is mainly suitable for transmission in small spaces, and has the advantages of small size, large transmission ratio, and no undercut.

Utility model content

The technical problem to be solved by the utility model is to provide a small wind power generator with a new speed increasing device for the deficiencies of the existing technology, which can increase the input speed of the generator, reduce the volume of the generator, and reduce the speed of the generator. cost.

The technical scheme that the utility model adopts is as follows:

A small wind power generator with a speed-increasing transmission device, comprising a tower, a nacelle bracket rotatably arranged at the top of the tower, a nacelle fixed on the nacelle bracket, a generator, and the generator is driven by wind The wind wheel, between the wind wheel and the generator, is connected with a wire gear speed-increasing device that increases the input speed of the wind wheel and then outputs it to drive the generator to generate electricity. The wire gear has a large speed ratio, small size, Low manufacturing cost and other advantages, the linear gear speed increase device can convert the low speed input of the wind wheel into a high speed output, which is the speed of the general generator, under the condition of very small ambient wind, so the expensive slow speed can be discarded. The permanent magnet generator is changed to an ordinary low-cost generator to meet the needs of the majority of users.

Further, the wire gear speed-up device includes a wire gear speed-up box, a main shaft connected to the wind wheel at the front end, a driving wire gear and a driven wire gear located in the wire gear speed-up box, and a support set in the wire gear speed-up box plate, the linear gear speed-up box is located in the nacelle and fixed on the nacelle bracket, and the main shaft passes through the front-end deep groove ball bearing at the front end of the wire gear speed-up box, the front-end cover and the rear-end deep-groove ball bearing at the rear end, and the rear The end cover is arranged on the linear gear speed-up box, and the driving linear gear is sleeved on the main shaft through a flat key and is axially positioned by the shaft shoulder of the main shaft and the axial positioning device sleeved on the main shaft. The driving linear gear and the slave The crossing angle of the two axes when the moving wire gear meshes is 0 ⁰ <θ<180 ⁰ . The generator uses a pair of single-stage wire gear transmission pairs, that is, a driving wire gear and a driven wire gear. The wire teeth are evenly distributed on the cylindrical base. The wire gear has a large speed ratio, small size, and low manufacturing cost. Advantages, the key point is that it can realize the meshing transmission between the cross shafts at any angle of 0 ⁰ < θ < 180 ⁰ in the same plane, which makes the structure of the gearbox simple and flexible in design.

Furthermore, when the driving wire gear and the driven wire gear mesh, the two-axis intersection angle is θ=90 ⁰ , because the high-altitude environment space where the small wind power generator is located is limited, and at the same time, for the convenience of installation, the orthogonal wire gear meshing transmission is adopted , can play a role in reducing the volume and weight of the cabin.

Further, a rotating device is provided between the top of the tower and the cabin bracket, the rotating device includes a rotating body fixedly connected to the top of the tower, and the rotating body is rotationally connected with the axial inner cavity of the nacelle bracket through a rotating bearing , the generator is located in the axial inner cavity of the nacelle support and is arranged above the gyratory body. The accommodating space of the generator is reserved, the space of the engine room is further saved, and the weight of the engine room is reduced.

Further, the axial positioning device includes a positioning sleeve or a nut, the positioning sleeve can be positioned by cooperating with the bearing and the end cover, and the nut can be positioned by threads.

Further, the wind wheel includes a hub and blades arranged on the hub, the number of the blades is 5, the installation angle is 8.1 ⁰ , and there is a speed-up mechanism between the wind wheel and the generator, the transmission efficiency and the output speed The torque is relatively reduced. In order to make up for these shortcomings brought by the speed-up mechanism, the increase in the number of blades increases the efficiency of the wind rotor to capture wind energy, and the increase in the installation angle and the number of blades increases the output torque of the wind rotor. improve.

Compared with the prior art, the small wind power generator provided by the utility model adopts a new linear gear speed-increasing device, which can generate electricity with relatively small wind power, and has the advantages of miniaturization, small volume, high utilization rate of wind energy, simple structure, The advantage of low manufacturing cost can meet the needs of the majority of users, and is suitable for mass promotion and use, bringing certain economic and social benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of a small-sized wind power generator with a wire gear speed-up device of the present invention.

Fig. 2 is a schematic structural diagram of the orthogonal linear gear speed-up device in Fig. 1 .

The figure shows: 1-blade; 2-wheel hub; 3-main shaft bearing seat; 4-line gear speed-up box; 5-driving line gear; 6-positioning sleeve; 7-rear end deep groove ball bearing; 8 - rear end cover; 9 - cabin bracket; 10 - cabin; 11 - main shaft; 12 - support plate; 13 - driven line gear; 14 - generator; 15 - slewing bearing; 18-front end cover; 19-front end deep groove ball bearing.

detailed description

Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail, it should be noted that, accompanying drawing is only for exemplary illustration, can not be interpreted as the restriction to this patent; It is understandable that some well-known structures and descriptions thereof may be omitted.

As shown in Fig. 1, a kind of small-sized wind-driven generator with speed-increasing transmission device comprises tower frame 17, the nacelle support 9 that is arranged on the top of described tower frame 17 rotatably, the nacelle 10 that is fixed on the described nacelle support 9 , the generator 14, the wind rotor of the generator 14 driven by wind power, between the wind rotor and the generator 14, a line is connected to increase the input speed of the wind rotor and then output and drive the generator 14 to generate electricity The gear speed-up device, the wire gear has the advantages of large speed ratio, small size, and low manufacturing cost. The rotation speed of the general generator, so the expensive slow permanent magnet generator can be replaced by an ordinary cheap generator to meet the needs of the majority of users.

Specifically, in an optimized embodiment of the present utility model, the wire gear speed-up device includes a wire gear speed-up box 4, a main shaft 11 connected to a wind wheel at the front end, and an active wire gear located in the wire gear speed-up box 4. 5 and the driven line gear 13, the support plate 12 arranged in the line gear speed-up box 4, the line gear speed-up box 4 is located in the nacelle 10 and fixed on the nacelle bracket 9, and the main shaft 11 passes through the line gear speed-up box 4 The front end deep groove ball bearing 19 and the front end cover 18 of the gearbox 4 front end and the rear end deep groove ball bearing 7 and the rear end cover 8 of the rear end are arranged on the online gear speed-up box 4, and the driving line gear 5 is sleeved by a flat key On the main shaft 11, it is axially positioned by the shaft shoulder of the main shaft 11 and the axial positioning device sleeved on the main shaft 11. When the driving wire gear 5 and the driven wire gear 13 mesh, the crossing angle of the two shafts is 0 ⁰ <θ <180 ⁰ , one end of the driven wire gear 13 located in the wire gear speed-up box 4 is supported by the support plate 12, and the end extending to the outside of the wire gear speed-up box 4 is connected to the generator 14. By using a pair of single-stage wire Gear transmission pair, that is, a driving wire gear and a driven wire gear. The wire teeth are evenly distributed on the cylindrical base. The wire gear has the advantages of large speed ratio, small size, and low manufacturing cost. 0 ⁰ <θ<180 ⁰ The meshing transmission between the cross shafts at any angle makes the structure of the gearbox simple and flexible in design.

Specifically, as shown in Figure 2, in an optimized embodiment of the present invention, the two-axis intersection angle when the driving wire gear 5 meshes with the driven wire gear 13 is θ=90 ⁰ , the driving wire The driving wire teeth of the gear 5 and the driven wire teeth of the driven wire gear 13 are respectively evenly distributed on the cylindrical substrate. For example, in this embodiment, the driven wire teeth of the driven wire gear 13 are helically distributed on the cylindrical substrate. On the surface, the driving wire teeth of the driving wire gear 5 are evenly distributed on the axial end surface of the cylindrical base relative to the driven wire gear 13, and the driving wire gear and the driven wire gear are orthogonally meshed, and the purpose of increasing speed is achieved through transmission, wherein , the transmission ratio of the linear gear speed-up box 4 of this embodiment is i=6 , the number of wire teeth of the driving wire gear 5 is N ₁ = 18, and the number of wire teeth of the driven wire gear 13 is N ₂ = 3, because the small wind power generator is located The high-altitude environment has limited space. At the same time, for the convenience of installation, the use of orthogonal linear gear meshing transmission can reduce the volume and weight of the engine room.

Specifically, in an optimized embodiment of the present utility model, a turning device is provided between the top of the tower 17 and the nacelle support 9, and the turning device includes a turning body 16 fixedly connected to the top of the tower 17, the The revolving body 16 is rotatably connected with the axial cavity of the nacelle support 9 through the slewing bearing 15, and the generator 14 is located in the axial cavity of the nacelle support 9 and is arranged above the revolving body 16. 4 is an orthogonal speed-up box, which changes the transmission direction. By setting the generator 14 on the revolving body 16 in the axial inner cavity of the existing nacelle support 9, there is no need to reserve the accommodation of the generator 14 in the nacelle 10. space, further saving the space of the cabin and reducing the weight of the cabin.

Specifically, in an optimized embodiment of the present utility model, the axial positioning device includes a positioning sleeve 6, the positioning sleeve 6 can be positioned by cooperating with the bearing and the end cover, and the nut can be positioned by thread .

Specifically, in an optimized embodiment of the present utility model, the wind wheel includes a hub 2 and blades 1 arranged on the hub 2, the number of the blades 1 is 5, and the installation angle is 8.1 ⁰ , the wind wheel and If there is a speed-up mechanism between the generators, the transmission efficiency and output torque will be relatively reduced. In order to make up for these shortcomings caused by the speed-up mechanism, the increase in the number of blades will increase the efficiency of the wind wheel to capture wind energy, and the installation angle The increase and the number of blades increase the output torque of the wind rotor.

The working principle of the utility model is: when the wind force acts on the wind wheel to make it rotate at the speed A, the wind wheel drives the main shaft 11 of the wire gear speed-up box 4 connected to it to rotate synchronously, and then the driving wire gear 5 drives and The meshed driven wire gear 13, because of the transmission ratio i=6 of the wire gear speed-up box 4, the output speed of the driven wire gear 13 is 6A, which realizes the multiplication of the speed of the wind wheel and achieves the purpose of increasing speed, so that The generator 14 connected therewith can start and reach the operating speed under very small wind conditions, and the generator 14 converts mechanical energy into electrical energy. And what generator 14 of the present utility model adopted is conventional generator, compares the permanent magnet generator of low speed, and cost is low and volume is little.

To sum up, the small wind power generator provided by the utility model adopts a novel linear gear speed-increasing device, which can generate electricity with relatively small wind power, and has the advantages of miniaturization, small volume, high utilization rate of wind energy, simple structure, and low manufacturing cost. The advantage of being low, can meet the needs of the majority of users, and is suitable for mass promotion and use, bringing certain economic and social benefits.

The above-mentioned implementation example is a preferred implementation of the present utility model, but the implementation of the present utility model is not limited by the above-mentioned examples, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification should all be equivalent replacement methods, and are all included in the scope of protection of this patent.

Claims (6)

1. A small wind power generator with a speed-increasing transmission device, comprising a tower (17), a nacelle bracket (9) rotatably arranged at the top of the tower (17), fixed on the nacelle bracket (9) The nacelle (10), the generator (14), and the wind rotor that drives the generator (14) by wind force are characterized in that: between the wind rotor and the generator (14), there is a wind The input speed of the wheel is increased and then output and drives the linear gear speed increasing device of the generator (14) to generate electricity. 2. The small wind power generator with a speed-up transmission device according to claim (1), characterized in that: the wire gear speed-up device includes a wire gear speed-up box (4), a main shaft ( 11), the driving wire gear (5) and the driven wire gear (13) located in the wire gear speed-up box (4), the support plate (12) arranged in the wire gear speed-up box (4), the wire gear The speed-up box (4) is located in the nacelle (10) and fixed on the nacelle bracket (9), the main shaft (11) passes through the front end deep groove ball bearing (19) at the front end of the line gear speed-up box (4), the front end The cover (18), the rear end deep groove ball bearing (7) and the rear end cover (8) are set on the linear gear speed-up box (4), and the drive line gear (5) is sleeved on the main shaft ( 11) and positioned axially by the shaft shoulder of the main shaft (11) and the axial positioning device sleeved on the main shaft (11), the two shafts when the driving wire gear (5) and the driven wire gear (13) mesh The intersection angle is 0 ⁰ <θ<180 ⁰ , and one end of the driven wire gear (13) located in the wire gear speed-up box (4) is supported by the support plate (12) and extends to the wire gear speed-up box (4) Outer end connects generator (14). 3. The small wind power generator with speed-up transmission device according to claim 2, characterized in that: when the driving wire gear (5) and the driven wire gear (13) mesh, the two-axis intersection angle is θ= ⁹⁰⁰ . 4. The small wind power generator with speed-increasing transmission device according to claim 3, characterized in that: a turning device is provided between the top of the tower (17) and the nacelle bracket (9), and the turning device includes The revolving body (16) fixedly connected to the top of the tower (17), the revolving body (16) is rotatably connected to the axial inner cavity of the nacelle support (9) through a revolving bearing (15), and the generator (14) Located in the axial inner cavity of the nacelle support (9) and arranged above the rotary body (16). 5. The small wind power generator with speed-up transmission device according to claim 2, characterized in that: said axial positioning device comprises a positioning sleeve (6) or a nut. 6. The small wind power generator with speed-up transmission according to any one of claims 1 to 5, characterized in that: the wind wheel includes a hub (2) and blades arranged on the hub (2) (1), the number of the blades (1) is 5, and the installation angle is 8.1 ⁰ .