Energy-saving windmill

Abstract

The utility model relates to the technical field of wind energy utilization, and discloses an energy-saving windmill which is characterized in that a reserved groove is formed in the top of the inner wall of a speed reducer, a first bearing is fixedly connected to the inner wall of the reserved groove, a second bearing is connected to the bottom of the inner wall of the speed reducer in a threaded mode, and a plurality of reserved holes are formed in the periphery of the bottom of the second bearing; the inner wall of the first bearing and the inner wall of the second bearing are fixedly connected with rotating shafts, the tops of the rotating shafts are fixedly connected with couplings, a pressing plate is arranged on the top of the speed reducer, and the periphery of the top of the pressing plate is in threaded connection with a plurality of first bolts. According to the wind power generation device, the blade mounting plate is tightly connected with the rotating shaft, it is ensured that wind energy is efficiently converted into rotating power and accurately transmitted, the wind energy utilization rate is increased, the second rotating shaft is in threaded connection with the speed reducer, and the position of the second bearing can be adjusted according to different altitudes of the windmill and different wind levels of the windmill.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind energy utilization, especially relates to an energy-saving windmill. BACKGROUND

[0002] In today's era of pursuing clean energy efficient utilization, wind energy as a kind of inexhaustible, renewable energy, its development and utilization are highly valued, windmill as the key equipment of wind energy conversion into electric energy or other usable energy, is widely used in wind power generation field, small distributed energy system and many other fields.

[0003] The traditional windmill is composed of tower, wind wheel assembly, cabin, yaw system and brake system, since the blades are fixed on the wind wheel by welding, the angle between the blades cannot be adjusted, and the weight of the blades is heavy, so strong wind energy is needed to drive the windmill to rotate, wind energy cannot be fully utilized, wind energy is wasted, and the wind energy conversion rate is low, the prior art changes the material of the blade to reduce the weight of the blade, and increases the adjusting assembly on the wind wheel, so that the inclination angle of the blade can be adjusted according to different wind volume, thereby increasing the contact area with wind energy and improving the wind energy conversion rate, but the windmill bearing layout adopts a fixed mode, the distance between the bearings is not adjustable, in different wind speed environments, the wind load borne by the wind wheel is completely different, a high-power motor must be used to drive, resulting in high energy consumption. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides an energy-saving windmill, which aims at improving the problem that the windmill bearing layout adopts a fixed mode, the distance between the bearings is not adjustable, in different wind speed environments, the wind load borne by the wind wheel is completely different, a high-power motor must be used to drive, resulting in high energy consumption in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: an energy-saving windmill, comprising a speed reducer, a reserved slot is formed in the top inner wall of the speed reducer, a bearing one is fixedly connected to the inner wall of the reserved slot, a bearing two is screw-connected to the bottom inner wall of the speed reducer, a plurality of reserved holes are formed around the bottom of the bearing two, a rotating shaft is fixedly connected to the inner walls of the bearing one and the bearing two, a coupling is fixedly connected to the top of the rotating shaft, a pressing plate is arranged on the top of the speed reducer, a plurality of bolts one are screw-connected around the top of the pressing plate, the pressing plate is screw-connected to the speed reducer through the bolts one, a connecting plate is fixedly connected to the bottom outer wall of the speed reducer, a connecting seat is screw-connected to the bottom of the connecting plate, a flywheel is rotatably connected to the bottom of the connecting seat, a blade mounting plate is arranged on the bottom inner wall of the flywheel, a plurality of screws one are screw-connected to the outer wall of the blade mounting plate, the blade mounting plate is screw-connected to the rotating shaft through the screws one, and a noise reduction mechanism is arranged on the outer wall of the flywheel.

[0006] Through the above technical scheme: the external wind acts on the windmill blades, the blade mounting plate is tightly connected with the rotating shaft through the screw one, the wind energy is converted into rotating power and transmitted to the rotating shaft, the rotating shaft rotates under the support of the bearing one and the bearing two, the bearing one is fixed on the top of the reserved groove in the inner wall of the speed reducer, the bearing two is threadedly connected to the bottom of the inner wall of the speed reducer, the bottom reserved hole facilitates installation and adjustment, the top pressing plate of the speed reducer compacts the bearing one through the bolt one, and stable operation is ensured, the bottom connecting plate of the speed reducer is threadedly connected with the connecting seat, and the connecting seat supports the flywheel; when the wind is unstable, the flywheel quickly stores or releases energy, stabilizes the rotating speed, and ensures stable power output.

[0007] As a further description of the above technical scheme:

[0008] The noise reduction mechanism comprises sound-absorbing cotton, the sound-absorbing cotton is fixedly connected to the outer wall of the flywheel, multiple guide grooves are formed in the upper and lower sides of the outer wall of the sound-absorbing cotton, multiple sound-absorbing particles are fixedly connected to the inner walls of the multiple guide grooves, multiple noise reduction apertures are formed in the upper and lower sides of the inner wall of the sound-absorbing cotton, multiple reinforcing ribs are fixedly connected to the inner wall of the flywheel, and multiple connecting rods are fixedly connected between adjacent ones of the multiple reinforcing ribs.

[0009] Through the above technical scheme: the sound-absorbing cotton utilizes its porous characteristics to make the incoming sound waves drive the air in the apertures to vibrate, and through the friction between the air and the fibers, the sound energy is converted into heat energy and consumed, thereby achieving preliminary noise reduction; the guide grooves change the noise propagation path, so that the sound is reflected and interfered in the grooves, the specific frequency noise is weakened, the sound-absorbing particles further absorb residual noise, the noise reduction apertures intercept and dissipate part of the noise from the flywheel, and the reinforcing ribs and the connecting rods cooperate with each other to strengthen the structural stability of the flywheel and reduce additional vibration and noise caused by unstable structure.

[0010] As a further description of the above technical scheme:

[0011] Multiple anti-skid grooves are formed around the outer wall of the shaft coupling, and the outer wall of the shaft coupling is chamfered.

[0012] Through the above technical scheme: the anti-skid grooves can increase the friction between the shaft coupling and other connecting components, ensure that the connection is more stable during power transmission, and reduce the likelihood of slipping, thereby ensuring the efficiency and stability of power transmission; the chamfer can play a guiding role during installation, making it easier for the shaft coupling to be assembled with other components, improving the convenience and efficiency of installation; on the other hand, the chamfer can reduce the risk of scratches to the operator during use of the shaft coupling, improving the safety of the equipment.

[0013] As a further description of the above technical scheme:

[0014] The bottom of the pressing plate is fixedly connected with a sealing gasket, and each of the plurality of bolts penetrates the sealing gasket.

[0015] Through the above technical scheme: the sealing gasket plays a sealing role, which can prevent dust and water vapor from entering the inside of the speed reducer, thereby protecting the parts inside the speed reducer from pollution and damage.

[0016] As a further description of the above technical scheme:

[0017] The front side of the outer wall of the speed reducer is provided with an information board, a plurality of screws II are threadedly connected to the front side of the outer wall of the information board, and the information board is threadedly connected with the speed reducer through the screws II.

[0018] Through the above technical scheme: the information board carries and displays the key information of the speed reducer, which is convenient for relevant personnel to refer to, and is beneficial to operation, troubleshooting and maintenance arrangement.

[0019] As a further description of the above technical scheme:

[0020] The right side of the outer wall of the speed reducer is fixedly connected with a connecting column, and the right end of the connecting column is fixedly connected with a bird repeller.

[0021] Through the above technical scheme: the bird repeller drives away the birds near the windmill and the speed reducer by emitting specific sound, light or ultrasonic wave, etc., effectively preventing the birds from inhabiting, nesting or causing other damage to the equipment.

[0022] As a further description of the above technical scheme:

[0023] The inner wall of the speed reducer is fixedly connected with a soundproof cotton, and a plurality of sound holes are formed in the inner wall of the soundproof cotton.

[0024] As a further description of the above technical scheme:

[0025] A plurality of threaded holes are formed in the outer wall of the blade mounting plate, and a plurality of bolts II are threadedly connected to the inner wall of each of the threaded holes.

[0026] Through the above technical scheme: the threaded holes provide connection points for installing and fixing the blades, and through the cooperation of the threaded holes and the bolts II, the blades can be firmly installed on the blade mounting plate.

[0027] The utility model has the advantages of:

[0028] 1. The utility model discloses a blade mounting plate and the rotating shaft are closely connected, ensure that the wind can be converted into rotating power efficiently and accurate transmission, improve the wind energy utilization rate, and through the rotating shaft no. 2 and the speed reducer thread connection, can according to the different altitude of windmill, and the different regulation bearing no. 2 of windmill facing wind level position, reduce the friction too big influence energy consumption in the process of the axle rotation in speed reducer, make the motor of smaller power can normally drive the rotation of the wind blade of windmill.

[0029] 2. The utility model discloses a sound -absorbing cotton, flow guide groove, sound absorption particle and noise reduction interstice common action, through the change of the propagation direction of noise and the absorption of noise, absorb the sound of windmill and air friction in the process of windmill rotation, the reinforcement rib and connecting rod strengthen the structure stability of flywheel, reduce the additional vibration and noise caused by the unstable structure, prolong the flywheel life, create a quiet environment for equipment, improve work efficiency and use experience. DRAWINGS

[0030] Figure 1 A kind of energy-saving windmill perspective for the utility model is proposed;

[0031] Figure 2 A kind of energy-saving windmill partial structure schematic view for the utility model is proposed;

[0032] Figure 3 A kind of energy-saving windmill partial structure split view for the utility model is proposed;

[0033] Figure 4 A kind of energy-saving windmill blade mounting plate schematic view for the utility model is proposed;

[0034] Figure 5 A kind of energy-saving windmill noise reduction mechanism schematic view for the utility model is proposed;

[0035] Figure 6 A kind of energy-saving windmill sound -absorbing cotton sectional view for the utility model is proposed;

[0036] Figure 7 A kind of energy-saving windmill speed reducer sectional view for the utility model is proposed.

[0037] Legend:

[0038] 1, speed reducer; 2, noise reduction mechanism; 201, sound absorbing cotton; 202, flow guide groove; 203, sound absorbing particles; 204, noise reduction aperture; 205, reinforcing rib; 206, connecting rod; 3, reserved groove; 4, bearing one; 5, bearing two; 6, reserved hole; 7, rotating shaft; 8, coupling; 9, pressing plate; 10, bolt one; 11, connecting plate; 12, connecting seat; 13, flywheel; 14, blade mounting plate; 15, screw one; 16, anti-skid groove; 17, sealing gasket; 18, information board; 19, screw two; 20, connecting column; 21, bird repeller; 22, mute cotton; 23, sound hole; 24, threaded hole; 25, bolt two. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] Referring to Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a kind of energy-saving windmill, including speed reducer 1, speed reducer 1 plays the key role in whole device with torque control rotating speed, the inner wall top of the speed reducer 1 is equipped with reserved slot 3, and reserved slot 3 provides accurate positioning for the installation of subsequent components, the inner wall of the reserved slot 3 is fixedly connected with bearing one 4, bearing one 4 is closely combined with reserved slot 3, can stably bear the upper end of rotating shaft 7, ensure that rotating shaft 7 when high-speed rotation, top does not appear deviation or wobble, the inner wall bottom of the speed reducer 1 is connected with bearing two 5 with screw thread, this screw thread connection mode is convenient according to actual demand flexible adjustment the position of bearing two 5, the bottom of the bearing two 5 is equipped with multiple reserved holes 6 around, reserved hole 6 can reduce bearing two 5 self weight on one hand, reduce the overall load of device, on the other hand, it is convenient to operate and positioning when installation, the inner wall of the bearing one 4 and the bearing two 5 is fixedly connected with rotating shaft 7, and bearing one 4 and bearing two 5 create smooth rotation environment for rotating shaft 7, the top of the rotating shaft 7 is fixedly connected with coupling 8, can efficiently transmit the rotating power of rotating shaft 7, the top of the speed reducer 1 is provided with pressing plate 9, and pressing plate 9 is fastened to the component below and plays the role of compaction, the top of the pressing plate 9 is connected with multiple bolts one 10 around with screw thread, the pressing plate 9 is connected with the speed reducer 1 with screw thread by the bolt one 10, can be firmly fixed on the speed reducer 1 above, the outer wall bottom of the speed reducer 1 is fixedly connected with connecting plate 11, and connecting plate 11 provides stable connection basis for subsequent components, the bottom of the connecting plate 11 is connected with connecting seat 12 with screw thread, and connecting seat 12 plays the role of transition connection, the bottom of the connecting seat 12 is rotatably connected with flywheel 13, and flywheel 13 plays the role of buffering when windmill operates, when external wind is unstable, causes windmill rotating speed to be high and low, flywheel 13 can quickly absorb excess energy and store, or release energy in time when rotating speed reduces, maintain the relative stability of the rotating speed of whole device, guarantee the stability of power output, the inner wall bottom of the flywheel 13 is provided with blade mounting plate 14, and provides carrier for the installation of blade, the outer wall middle part of the blade mounting plate 14 is connected with multiple screw one 15 with screw thread, the blade mounting plate 14 is connected with the rotating shaft 7 with screw thread by the screw one 15, ensure that blade mounting plate 14 and rotating shaft 7 become a stable whole, the outer wall of the flywheel 13 is provided with noise reduction mechanism 2;The outer wall around of the coupling 8 is equipped with multiple anti-skid grooves 16, and anti-skid groove 16 can effectively increase the friction between coupling 8 and other connected components, prevent loosening or skidding phenomenon in the process of operation, ensure the stability of power transmission, the outer wall around of the coupling 8 is equipped with chamfer, and chamfer avoids coupling 8 to scratch operating personnel in installation or use process, can also reduce the damage when colliding with surrounding components, prolong service life.The bottom of the pressing plate 9 is fixedly connected with a sealing gasket 17, which effectively prevents dust and water vapor from entering the interior of the device and protects the internal precision components from erosion.

[0041] Specifically, under the action of external wind force, the windmill blades rotate around the rotating shaft 7, the blade mounting plate 14 is threadedly connected with the rotating shaft 7 through the screw 15, ensuring that the blades convert wind energy into rotational power and transmit it to the rotating shaft 7, the reserved hole 6 at the bottom of the bearing 5 reduces weight and facilitates installation, and the staff adjusts the position of the bearing 5 by inserting a tool into the reserved hole 6 to rotate the bearing 5, thereby reducing the friction during the rotation of the rotating shaft 7 in the speed reducer 1, which affects energy consumption, the pressing plate 9 is fixed to the upper side of the speed reducer 1 through the bolt 10, which compacts the bearing 4 and ensures the stability of the bearing 4, the connecting seat 12 provides support for the flywheel 13 connected to the bottom, when the wind speed fluctuates due to unstable external wind force, the flywheel 13 quickly stores or releases energy, stabilizes the speed of the device, and ensures stable power output; the anti-skid groove 16 can effectively increase the friction between the shaft coupling 8 and other connected components, prevent loosening or slipping during operation, ensure the stability of power transmission, and avoid scratching the operator during installation or use, which can also reduce damage when colliding with surrounding components and prolong the service life; the sealing gasket 17 effectively prevents dust and water vapor from entering the interior of the device and protects the internal precision components from erosion.

[0042] Referring to Figure 1 , Figure 5 and Figure 6 , the noise reduction mechanism 2 includes sound-absorbing cotton 201 fixedly connected to the outer wall of the flywheel 13, the sound-absorbing cotton 201 is a porous material that can absorb noise generated during the operation of the flywheel 13, reducing noise levels, the outer wall of the sound-absorbing cotton 201 is provided with a plurality of flow guide grooves 202 on the upper and lower sides, the flow guide grooves 202 can change the direction of sound propagation, making the noise reflect and interfere in the grooves, thereby weakening the noise of a specific frequency, the inner walls of the plurality of flow guide grooves 202 are fixedly connected with a plurality of sound-absorbing particles 203, which further enhance the sound-absorbing effect and can absorb more noise energy, the inner walls of the sound-absorbing cotton 201 are provided with a plurality of noise reduction apertures 204 on the upper and lower sides, the noise reduction apertures 204 can intercept and dissipate part of the noise propagating outward from the flywheel 13, the inner wall of the flywheel 13 is fixedly connected with a plurality of reinforcing ribs 205, which enhance the structural strength of the flywheel 13 and reduce additional vibrations and noise caused by unstable structure, the adjacent reinforcing ribs 205 are fixedly connected with a plurality of connecting rods 206, which further improve the connection stability of the reinforcing ribs 205 and provide protection for the stable operation of the flywheel 13;

[0043] Specifically, when the flywheel 13 operates at high speed and causes noise, first, the sound-absorbing cotton 201 utilizes its porous characteristics to make the incoming sound waves vibrate the air in the pores, and through the friction between the air and the fibers, the sound energy is converted into heat energy and consumed. The multiple flow guide grooves 202 change the noise propagation path, so that the sound is reflected and interfered in the grooves, weakening the noise of specific frequencies, further weakening the noise, and the sound-absorbing particles 203 further absorb sound energy. The noise reduction pores 204 on the inner wall of the sound-absorbing cotton 201 intercept and dissipate part of the noise from the flywheel 13 outward, and the reinforcing ribs 205 and the connecting rods 206 cooperate with each other to strengthen the structural stability of the flywheel 13, reduce additional vibration and noise caused by unstable structure during operation, and create a quiet environment for equipment operation.

[0044] With reference to Figure 1 , Figure 4 and Figure 7 , the outer wall of the speed reducer 1 is provided with an information board 18, which is used to display the relevant information of the speed reducer 1, so that the user can understand the model and parameters of the equipment. The outer wall of the information board 18 is threadedly connected with multiple screws 19, which ensures that the information board 18 is firmly fixed on the speed reducer 1 and prevents it from loosening or falling off. The information board 18 is threadedly connected with the speed reducer 1 through the screws 19; the outer wall of the speed reducer 1 is fixedly connected with a connecting column 20, and the right end of the connecting column 20 is fixedly connected with a bird repeller 21, which can emit a specific sound or light to drive birds away from the speed reducer 1.

[0045] Specifically, the information board 18 is used to display the relevant important information of the device, which is convenient for the staff to use and maintain; when the equipment is operated outdoors and is easy to attract birds to inhabit, the bird repeller 21 is started to emit a specific frequency sound or light, which takes advantage of the sensitivity of birds to these stimuli to drive them away from the device.

[0046] With reference to Figure 1 , Figure 3 and Figure 7 , the inner wall of the speed reducer 1 is fixedly connected with a sound-absorbing cotton 22, which has good sound-absorbing performance and can effectively reduce the noise generated inside the speed reducer 1. Multiple sound-absorbing holes 23 are formed around the inner wall of the sound-absorbing cotton 22, which further enhances the sound-absorbing effect, so that the noise is reflected and absorbed multiple times in the holes, reducing the propagation of noise. Multiple threaded holes 24 are formed in the outer wall of the blade mounting plate 14, which provide fixing points for installing blades and ensure the firmness of the blade installation. The inner walls of multiple threaded holes 24 are threadedly connected with multiple bolts 25, which firmly fix the blades on the blade mounting plate 14 and prevent the blades from loosening or falling off during operation.

[0047] Specifically, when the speed reducer 1 is running, the noise generated by the interaction of the internal mechanical components is transmitted to the surrounding, the sound wave enters the mute cotton 22, and the internal air vibration is triggered. During the vibration process, the sound energy is dissipated through friction with the cotton fibers and multiple reflections in the multiple sound-absorbing holes 23, and finally converted into heat energy or other forms of energy, greatly reducing the external transmission of internal noise; When assembling the blade, screw two 25 is screwed into threaded hole 24, tightly locking the blade, so that the blade does not loosen and displace during high-speed rotation, ensuring the reliability and safety of the equipment operation, and providing solid support for the stable operation of the speed reducer 1.

[0048] Working principle: External wind drives the windmill to run, the windmill blades rotate around the rotating shaft 7, the blade mounting plate 14 is tightly screwed with the rotating shaft 7 through screw one 15, ensuring that the blades can efficiently convert wind energy into rotational power and accurately transmit it to the rotating shaft 7. The reserved hole 6 at the bottom of bearing two 5 not only reduces the overall weight, but also allows workers to insert tools into the reserved hole 6 to rotate bearing two 5 according to the altitude and wind level of the windmill, finely adjust its position, effectively reduce energy loss caused by excessive friction when the rotating shaft 7 of the speed reducer 1 rotates, and the pressing plate 9 is firmly fixed on the speed reducer 1 through the screw one 10, compacting the bearing one 4 and ensuring its stable operation. The connecting seat 12 provides solid support for the flywheel 13 connected to the bottom, when the external wind is unstable and causes the windmill speed to fluctuate, the flywheel 13 can quickly store or release energy, stabilize the device speed, ensure stable and continuous power output, and make the entire system run efficiently;

[0049] And when the flywheel 13 runs at high speed and generates noise, the sound-absorbing cotton 201 first plays a role by its porous characteristics, the external noise sound wave enters, the air in the pores is vibrated by the sound wave, the air and the fiber rub, the sound energy is converted into heat energy and dissipated, achieving preliminary noise reduction. Then, the multiple guide grooves 202 change the noise propagation path, so that the sound is reflected and interfered in the groove, weakening the specific frequency noise. At the same time, the sound-absorbing particles 203 in the guide groove 202 absorb the residual noise. In addition, the noise reduction pores 204 on the inner wall of the sound-absorbing cotton 201 intercept part of the noise from the flywheel 13 and dissipate it. Finally, the reinforcing ribs 205 cooperate with the connecting rods 206 to strengthen the structural stability of the flywheel 13, reduce additional vibration and noise caused by unstable structure during operation, and create a quiet environment for equipment operation.

[0050] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An energy saving windmill comprising a speed reducer (1), characterized in that: The inner wall top of the speed reducer (1) is provided with a reserved groove (3), the inner wall of the reserved groove (3) is fixedly connected with a bearing one (4), the inner wall bottom of the speed reducer (1) is threadedly connected with a bearing two (5), the bottom of the bearing two (5) is provided with a plurality of reserved holes (6), the inner walls of the bearing one (4) and the bearing two (5) are fixedly connected with a rotating shaft (7), the top of the rotating shaft (7) is fixedly connected with a connecting shaft (8), the top of the speed reducer (1) is provided with a pressing plate (9), the top of the pressing plate (9) is threadedly connected with a plurality of bolts one (10), the pressing plate (9) is threadedly connected with the speed reducer (1) through the bolts one (10), the outer wall bottom of the speed reducer (1) is fixedly connected with a connecting plate (11), the bottom of the connecting plate (11) is threadedly connected with a connecting seat (12), the bottom of the connecting seat (12) is rotatably connected with a flywheel (13), the inner wall bottom of the flywheel (13) is provided with a blade mounting plate (14), the outer wall middle of the blade mounting plate (14) is threadedly connected with a plurality of screws one (15), the blade mounting plate (14) is threadedly connected with the rotating shaft (7) through the screws one (15), the outer wall of the flywheel (13) is provided with a noise reduction mechanism (2).

2. An energy saving windmill as claimed in claim 1, characterized in that: The noise reduction mechanism (2) comprises sound-absorbing cotton (201), the outer wall of the sound-absorbing cotton (201) is fixedly connected with the flywheel (13), the outer wall of the sound-absorbing cotton (201) is provided with a plurality of flow guide grooves (202) on the upper side and the lower side, the inner walls of the plurality of flow guide grooves (202) are fixedly connected with a plurality of sound-absorbing particles (203), the inner walls of the sound-absorbing cotton (201) are provided with a plurality of noise reduction apertures (204) on the upper side and the lower side, the inner wall of the flywheel (13) is fixedly connected with a plurality of reinforcing ribs (205), the adjacent ones of the plurality of reinforcing ribs (205) are fixedly connected with a plurality of connecting rods (206).

3. An energy saving windmill as claimed in claim 1, characterized in that: The outer wall of the connecting shaft (8) is provided with a plurality of anti-skid grooves (16) around, and the outer wall of the connecting shaft (8) is provided with a chamfer around.

4. An energy saving windmill as claimed in claim 1, characterized in that: The bottom of the pressing plate (9) is fixedly connected with a sealing gasket (17), and the plurality of bolts one (10) penetrates through the sealing gasket (17).

5. An energy saving windmill as claimed in claim 1, characterized in that: The outer wall front side of the speed reducer (1) is provided with an information board (18), the outer wall front side of the information board (18) is threadedly connected with a plurality of screws two (19), and the information board (18) is threadedly connected with the speed reducer (1) through the screws two (19).

6. An energy saving windmill as claimed in claim 1, characterized in that: The outer wall right side of the speed reducer (1) is fixedly connected with a connecting column (20), and the right end of the connecting column (20) is fixedly connected with a bird repeller (21).

7. An energy saving windmill as claimed in claim 1, characterized in that: The inner wall of the speed reducer (1) is fixedly connected with a mute cotton (22), and the inner wall of the mute cotton (22) is provided with a plurality of sound reduction holes (23) around.

8. An energy saving windmill as claimed in claim 1, characterized in that: The outer wall of the blade mounting plate (14) is provided with a plurality of threaded holes (24), and the inner walls of the plurality of threaded holes (24) are threadedly connected with a plurality of bolts two (25).

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