High-strength plastic fan blade

Abstract

The utility model relates to fan blade technical field, concretely is a kind of high-strength plastic fan blade, including rotating rod, pressing plate, blade and limiting component;The outer cylindrical surface of rotating rod is provided with convex strip, the outside of rotating rod and located at the convex strip is equipped with the pedestal for installing blade in use state;The number of blade has multiple, multiple blades are arranged around the center of pedestal equiangularly, and one end is inserted on the outer cylindrical surface of pedestal;Limiting component is installed at the one end outside of rotating rod and located below pedestal and convex strip.The utility model limits the mutual rotation of rotating rod, pedestal and pressing plate by convex strip, and makes the top end of limiting component penetrate pedestal, pressing plate and blade and extend to the above of pressing plate, and connecting fixed component with rotating rod and limiting component respectively, so that fixed component carries out multiple point pressure to pressing plate, to fix pedestal, makes the disassembly of pedestal and blade more convenient, and makes its installation more stable.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade technology, specifically to a high-strength plastic wind turbine blade. Background Technology

[0002] Plastic fan blades are fan blades made of plastic. They are mainly used in fans, ventilation equipment, air conditioners and other equipment. Plastic fan blades can create airflow by rotating, promote air circulation and control indoor temperature and humidity.

[0003] Chinese patent document CN222596386U discloses a high-strength plastic fan blade. By sliding the second washer to the surface of the threaded part, the second washer is made to fit tightly against the back side of the fixed shell. Then, by installing a hexagonal nut to compress the second washer, loosening caused by long-term use is avoided, thereby increasing the overall fixing strength of the fan blade. By sliding the second washer to the surface of the threaded part and compressing the second washer by installing a hexagonal nut, the fixing strength of the fan blade can be further strengthened.

[0004] In the above solution, the fixing component is limited on the back of the fixing shell by the cooperation of the hexagonal nut and the second washer. Since the fan blade is installed in the housing and connected to the motor shaft, when in use, the hexagonal nut and the second washer are placed between the base and the motor. The housing will block the installation of the fan blade, making it inconvenient to disassemble and assemble the fan blade. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a high-strength plastic fan blade.

[0006] The technical solution of this utility model is: a high-strength plastic fan blade, including a rotating rod, a pressure plate, blades, and a limiting assembly;

[0007] The outer circular surface of the rotating rod is provided with a raised strip, and a base for mounting the blade is provided on the outer side of the rotating rod at the raised strip for use in the operating state;

[0008] The number of blades is multiple, and the multiple blades are arranged at equal angles around the center of the base, with one end inserted into the outer circular surface of the base;

[0009] The limiting component is installed on the outside of one end of the rotating rod and below the base and the protrusion, with its top end extending through the base and the blade to the top of the base;

[0010] The pressure plate is sleeved on the outside of the protrusion and is connected to the upper end face of the base. Above the pressure plate is a fixing component that is connected to the rotating rod and the limiting component and fixes the base to the rotating rod and the limiting component in use.

[0011] Preferably, the limiting component includes a limiting plate and an internally threaded tube;

[0012] The limiting plate is fixedly installed on the outside of the rotating rod and located below the base, fitting snugly against the lower end face of the base;

[0013] There are multiple internally threaded tubes, which are arranged at equal angles at the top of the limiting plate, and the top of the tubes extends through the base to the top of the base. The internally threaded tubes are arranged in a one-to-one correspondence with the blades.

[0014] Preferably, the base is provided with a connecting hole in the middle, and the protrusion is accommodated in the connecting hole when the base and the rotating rod are installed together.

[0015] Preferably, the fixing components include bolts and nuts;

[0016] Bolts are positioned above the pressure plate and pass through the pressure plate to connect with the internally threaded pipe;

[0017] The nut is fitted onto the outside of the rotating rod and connected to the pressure plate.

[0018] Preferably, the top end of the internally threaded tube extends through the pressure plate to the top end of the pressure plate, and the top end is flush with the upper surface of the pressure plate.

[0019] Preferably, a connecting thread is provided on the outer side of the rotating rod and above the protrusion, and the nut is connected to the rotating rod through the connecting thread.

[0020] Preferably, the blade includes a connecting block and a blade body;

[0021] The connecting block is inserted into the outer circumference of the base and connected to the internally threaded pipe;

[0022] The blade body is located at one end of the connecting block.

[0023] Preferably, the back of the blade body is provided with a reinforcing plate that connects to the connecting block.

[0024] Preferably, the outer circular surface of the base is provided with a mounting groove, the other end of the connecting block is inserted into the mounting groove, and one end of the connecting block has the same size as the outer circular surface of the base.

[0025] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0026] This utility model limits the mutual rotation of the rotating rod, base, and pressure plate by using a protruding strip, and extends the top of the limiting component through the base, pressure plate, and blade to the top of the pressure plate. The fixing component is connected to the rotating rod and the limiting component respectively, so that the fixing component applies pressure to the pressure plate at multiple points to fix the base, making the disassembly and assembly of the base and blade more convenient and the installation more stable. Attached Figure Description

[0027] Figure 1This is a perspective view of one embodiment of the present invention.

[0028] Figure 2 In one embodiment of this utility model Figure 1 A schematic diagram of the structure exploded.

[0029] Figure 3 This is a cross-sectional schematic diagram of the base structure in one embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the blade structure in one embodiment of the present invention.

[0031] Reference numerals: 1. Rotating rod; 2. Limiting plate; 3. Base; 4. Pressure plate; 5. Bolt; 6. Nut; 7. Reinforcing plate; 8. Connecting block; 9. Blade body; 10. Raised bar; 11. Internal threaded tube; 12. Connecting thread; 13. Connecting hole; 14. Mounting groove. Detailed Implementation

[0032] Example 1

[0033] like Figure 1-4 As shown, the present invention proposes a high-strength plastic fan blade, which includes a rotating rod 1, a pressure plate 4, blades, and a limiting assembly;

[0034] A protrusion 10 is provided on the outer circular surface of the rotating rod 1, and a base 3 for installing the blade in the use state is provided on the outer side of the rotating rod 1 and at the protrusion 10.

[0035] The number of blades is multiple, and the multiple blades are arranged at equal angles around the center of the base 3, with one end inserted into the outer circular surface of the base 3;

[0036] The limiting component is installed on the outside of one end of the rotating rod 1 and is located below the base 3 and the protrusion 10, and its top end extends through the base 3 and the blade to the top of the base 3;

[0037] The pressure plate 4 is sleeved on the outside of the protrusion 10 and is attached to the upper end face of the base 3. Above the pressure plate 4 is a fixing component that is connected to the rotating rod 1 and the limiting component and fixes the base 3 on the rotating rod 1 and the limiting component in use.

[0038] In this embodiment, by inserting the blade onto the outer circumference of the base 3 and fitting the base 3 onto the outside of the rotating rod 1, and during the movement of the base 3 on the rotating rod 1 toward the protrusion 10, the top end of the limiting component moves relative to the bottom of the base 3 from the top to the bottom of the base 3. This allows the limiting component to restrict the position of the base 3 when it is on the rotating rod 1 and fitted onto the outside of the protrusion 10. The top end of the limiting component extends through the base 3 and the blade to the top of the base 3, fixing the blade to the base 3. Simultaneously, the pressure plate 4 is placed on the base 3. The upper sleeve is attached to the outer top of the protrusion 10 and the limiting component, connecting the rotating rod 1, the pressure plate 4 and the limiting component into a single unit, and clamping the base 3. At the same time, the fixing component is connected to the rotating rod 1 and the limiting component above the pressure plate 4, so that the fixing component moves the pressure plate 4 toward the base 3 and generates pressure, thereby clamping and fixing the base 3 between the limiting component and the pressure plate 4. Through the action of the protrusion 10, the base 3 and the pressure plate 4 rotate with the rotating rod 1, making the disassembly and assembly of the base 3 and the blade more convenient and the installation more stable.

[0039] Example 2

[0040] like Figure 2-3 As shown, the present invention proposes a high-strength plastic fan blade. Compared with embodiment one, the difference in this embodiment is that the limiting component includes a limiting plate 2 and an internally threaded tube 11.

[0041] The limiting plate 2 is fixedly installed on the outside of the rotating rod 1 and located below the base 3, fitting and connected to the lower end face of the base 3;

[0042] There are multiple internal threaded tubes 11, which are arranged at equal angles at the top of the limiting plate 2 and extend through the base 3 to the top of the base 3. The internal threaded tubes 11 are arranged in a one-to-one correspondence with the blades.

[0043] In an optional embodiment, a connecting hole 13 is provided in the middle of the base 3. When the base 3 and the rotating rod 1 are installed together, the protrusion 10 is accommodated in the connecting hole 13. This is used to limit the mutual rotation between the rotating rod 1 and the base 3 during use by the cooperation of the protrusion 10 and the connecting hole 13, so that the base 3 rotates with the rotating rod 1.

[0044] In this embodiment, the position of the base 3 on the rotating rod 1 is limited by the limiting plate 2. At the same time, the internal threaded tube 11 passes through the base 3 and the blade and extends to the top of the base 3, so that the internal threaded tube 11 fixes the blade to the base 3. The internal threaded tube 11 assists the rotating rod 1 in driving the base 3 to rotate while the rotating rod 1 drives the base 3 to rotate, thereby improving the stability of the base 3 and making the disassembly and assembly of the blade more convenient.

[0045] Example 3

[0046] like Figure 1-3As shown, the present invention proposes a high-strength plastic fan blade. The difference between this embodiment and the first embodiment is that the fixing component includes a bolt 5 and a nut 6.

[0047] Bolt 5 is positioned above pressure plate 4 and passes through pressure plate 4 to connect with internal threaded pipe 11;

[0048] Nut 6 is fitted on the outside of rotating rod 1 and connected to pressure plate 4.

[0049] In an optional embodiment, the top end of the internally threaded tube 11 extends through the pressure plate 4 to the top end of the pressure plate 4, and the top end is flush with the upper end face of the pressure plate 4, for connecting the bolt 5 to the pressure plate 4 during use.

[0050] In an optional embodiment, a connecting thread 12 is provided on the outer side of the rotating rod 1 and above the protrusion 10. The nut 6 is connected to the rotating rod 1 through the connecting thread 12. The tightening direction of the nut 6 is the same as the rotation direction of the base 3. This is used so that the rotation of the base 3 in the use state drives the nut 6 to always rotate in the tightened state, reducing the risk of the nut 6 falling off.

[0051] In this embodiment, after the pressure plate 4 is sleeved on the outside of the protrusion 10, the nut 6 is connected to the connecting thread 12 on the rotating rod 1, so that the nut 6 moves toward the pressure plate 4 and exerts pressure on the pressure plate 4, thereby pressing and fixing the base 3 with the pressure plate 4. At the same time, the bolt 5 is connected to the internal threaded tube 11, and the bolt 5 limits the edge of the pressure plate 4, so that the bolt 5 and the nut 6 simultaneously limit the position of the pressure plate 4. When one bolt 5 or nut 6 falls off, the others can limit the position of the pressure plate 4, which improves the tightness of the base 3 installation and makes the installation of the base 3 more convenient.

[0052] Example 4

[0053] like Figure 4 As shown, the present invention proposes a high-strength plastic wind turbine blade. Compared with the first embodiment, the difference in this embodiment is that the blade includes a connecting block 8 and a blade body 9.

[0054] The connecting block 8 is inserted into the outer circular surface of the base 3 and connected to the internally threaded pipe 11;

[0055] The blade body 9 is located at one end of the connecting block 8.

[0056] In an optional embodiment, the back of the blade body 9 is provided with a reinforcing plate 7 connected to the connecting block 8. The reinforcing plate 7 is triangular in shape and is used to support the blade body 9 during the circumferential movement of the blade body 9, thereby increasing the rigidity of the blade body 9.

[0057] In an optional embodiment, a mounting groove 14 is provided on the outer circular surface of the base 3, and the other end of the connecting block 8 is inserted into the mounting groove 14. One end of the connecting block 8 has the same size as the outer circular surface of the base 3. The size of the mounting groove 14 is matched with the size of the connecting block 8, so that the connecting block 8 fits snugly against the inner wall of the mounting groove 14. This allows the connecting block 8 to be installed in the base 3 during use. When the internal threaded tube 11 passes through the connecting block 8 and is installed in the base 3, the connecting block 8 is fixed in the mounting groove 14 by the base 3. This makes it easier to fix the connecting block 8 and generates an interaction force between the connecting block 8 and the inner wall of the mounting groove 14, thereby improving the strength of the connecting block 8.

[0058] In this embodiment, a connecting block 8 is provided at the end of the blade body 9, and the connecting block 8 is installed on the base 3 through the mounting groove 14. At the same time, the connecting block 8 is fixed when it is installed on the base 3 through the internal threaded tube 11, thereby fixing the blade body 9. This makes the blade body 9 and the base 3 detachably connected, allowing the blade body 9 to be replaced individually, thus eliminating the need to replace the entire wind turbine and reducing the cost of use.

[0059] In this invention, the blade body 9 drives the connecting block 8 to be inserted into the mounting groove 14, and the base 3 moves towards the protrusion 10 on the outside of the rotating rod 1. The limiting plate 2 is fixedly connected to the rotating rod 1, causing the internal threaded tube 11 to move relative to the base 3. This allows the base 3 to connect to the rotating rod 1 via the protrusion 10. The internal threaded tube 11 is inserted at the middle of the base 3 and the connecting block 8, thus limiting the position of the connecting block 8 and fixing the blade body 9 onto the base 3. Simultaneously, the pressure plate 4 is fitted over the protrusion 10 and the internal threaded tube 11, causing the rotating rod 1 and the limiting plate 2 to move towards the protrusion 10. The pressure plate 4 and the internal threaded tube 11 are connected as a whole to wrap and limit the base 3. The nut 6 is sleeved on the outside of the rotating rod 1 and connected to the rotating rod 1 through the connecting thread 12. The nut 6 exerts pressure on the middle of the pressure plate 4, causing the nut 6 to drive the pressure plate 4 to press and fix the base 3 on the limiting plate 2. At the same time, the bolt 5 is connected to the internal threaded tube 11 and limits the edge position of the pressure plate 4, improving the stability of the installation of the pressure plate 4. The bolt 5 and the nut 6 are fixed respectively, improving the stability of the base 3 and making the disassembly and assembly of the base 3 and the blade body 9 more convenient.

[0060] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A high-strength plastic fan blade, characterized in that, Includes a rotating rod (1), a pressure plate (4), blades, and a limiting assembly; A protrusion (10) is provided on the outer circular surface of the rotating rod (1), and a base (3) for installing the blade in the use state is provided on the outer side of the rotating rod (1) and at the protrusion (10); The number of blades is multiple, and the multiple blades are arranged at equal angles around the center of the base (3), with one end inserted into the outer circular surface of the base (3); The limiting component is installed on the outside of one end of the rotating rod (1) and below the base (3) and the protrusion (10), and its top end extends through the base (3) and the blade to the top of the base (3); The pressure plate (4) is sleeved on the outside of the protrusion (10) and is connected to the upper end face of the base (3). Above the pressure plate (4) is a fixing component that is connected to the rotating rod (1) and the limiting component and fixes the base (3) on the rotating rod (1) and the limiting component in use.

2. The high-strength plastic fan blade according to claim 1, characterized in that, The limiting assembly includes a limiting plate (2) and an internally threaded tube (11); The limiting plate (2) is fixedly installed on the outside of the rotating rod (1) and located below the base (3) and is in contact with the lower end face of the base (3); There are multiple internal threaded tubes (11), and multiple internal threaded tubes (11) are arranged at the top of the limiting plate (2) at equal angles, and the top of the tubes extends through the base (3) to the top of the base (3). The internal threaded tubes (11) are arranged in a one-to-one correspondence with the blades.

3. The high-strength plastic fan blade according to claim 1, characterized in that, The base (3) is provided with a connecting hole (13) in the middle. When the base (3) and the rotating rod (1) are installed together, the protrusion (10) is accommodated in the connecting hole (13).

4. A high-strength plastic fan blade according to claim 2, characterized in that, The fixing components include bolts (5) and nuts (6); Bolt (5) is positioned above pressure plate (4) and passes through pressure plate (4) to connect with internal threaded pipe (11); The nut (6) is fitted on the outside of the rotating rod (1) and connected to the pressure plate (4).

5. A high-strength plastic fan blade according to claim 4, characterized in that, The top end of the internally threaded tube (11) extends through the pressure plate (4) to the top end of the pressure plate (4), and the top end is flush with the upper surface of the pressure plate (4).

6. A high-strength plastic fan blade according to claim 4, characterized in that, A connecting thread (12) is provided on the outside of the rotating rod (1) and above the protrusion (10), and the nut (6) is connected to the rotating rod (1) through the connecting thread (12).

7. A high-strength plastic fan blade according to claim 2, characterized in that, The blade includes a connecting block (8) and a blade body (9); The connecting block (8) is inserted into the outer circular surface of the base (3) and connected to the internal threaded pipe (11); The blade body (9) is located at one end of the connecting block (8).

8. A high-strength plastic fan blade according to claim 7, characterized in that, The back of the blade body (9) is provided with a reinforcing plate (7) that is connected to the connecting block (8).

9. A high-strength plastic fan blade according to claim 7, characterized in that, The base (3) has an installation groove (14) on its outer circular surface. The other end of the connecting block (8) is inserted into the installation groove (14), and one end of the connecting block (8) has the same size as the outer circular surface of the base (3).

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