Driving shaft for fan

Abstract

The utility model relates to the technical field of driving shafts, and discloses a driving shaft for a fan, which comprises a shaft body, the inner wall of the top end of the shaft body is fixedly connected with a connecting frame, the interior of the connecting frame is fixedly connected with a fixed shaft, the front side and the rear side of the exterior of the fixed shaft are fixedly connected with limiting rings, the exterior of the fixed shaft is rotatably connected with a rotating plate, and the rotating plate is fixedly connected with the connecting frame. An elastic assembly is fixedly connected to the bottom of the rotating plate, a rotating shaft is rotatably connected to the interior of the shaft body, spiral fan blades are fixedly connected to the exterior of the rotating shaft, pressing rods are slidably connected to the upper side and the lower side of the exterior of the shaft body, and a cavity is formed in the shaft body. According to the utility model, the flange plate is dismounted and mounted, and the detachable flange plate design enables maintenance personnel to access and check the joint of the driving shaft and the flange more easily, so that potential problems can be found and solved in time, and the reliability and maintainability of the system are improved.

Description

Technical Field

[0001] This utility model relates to the field of drive shaft technology, and in particular to a drive shaft for a fan. Background Technology

[0002] A wind turbine drive shaft is a key component in a wind turbine system, used to transmit power and drive the wind turbine's operation. This drive shaft is connected to the rotating parts of the wind turbine, such as blades or impellers, so that airflow is generated as the drive shaft rotates.

[0003] In the prior art, if the drive shaft of some wind turbines is not detachable from the flange, then when the drive shaft needs to be repaired or replaced, the entire wind turbine unit may need to be replaced or a complex disassembly operation may be performed. This may result in long maintenance time, high cost, and increased difficulty of maintenance work. Therefore, in view of the above shortcomings, a drive shaft for wind turbines is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a drive shaft for fans, which aims to improve the problem that the drive shaft and flange of fans are not detachable in existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drive shaft for a fan, comprising a shaft body, a connecting frame fixedly connected to the inner wall of the top end of the shaft body, a fixed shaft fixedly connected inside the connecting frame, limit rings fixedly connected to both the front and rear sides of the fixed shaft, a rotating plate rotatably connected to the outside of the fixed shaft, a spring assembly fixedly connected to the bottom of the rotating plate, a rotating shaft rotatably connected inside the shaft body, a spiral fan blade fixedly connected to the outside of the rotating shaft, pressing rods slidably connected to both the upper and lower sides of the outside of the shaft body, a cavity formed inside the shaft body, a spring II disposed inside the cavity, one end of a connecting rod rotatably connected to the outside of the pressing rod, an insertion block fixedly connected to the other end of the connecting rod, and a limit assembly fixedly connected to the outside of the insertion block.

[0006] Furthermore, the elastic component includes a connecting plate, the top of which is fixedly connected to the inner right side wall of the shaft, and a plurality of springs are fixedly connected to the top of the connecting plate.

[0007] Furthermore, the limiting component includes a limiting block, the limiting block having a limiting groove slidably connected to its exterior, and the limiting block being fixedly connected to the exterior of the insertion block.

[0008] Furthermore, a flange is fixedly connected to the right side of the shaft, and a slot is provided on the outside of the flange, with the outside of the insertion block engaging with the inside of the slot.

[0009] Furthermore, a limiting groove is formed inside the cavity.

[0010] Furthermore, the connecting rod is externally rotatably connected to the inside of the cavity, and the insertion block is externally slidably connected to the inside of the shaft.

[0011] Furthermore, one end of the first spring is fixedly connected to the bottom of the rotating plate, and the other end of the first spring is fixedly connected to the top of the connecting plate.

[0012] Furthermore, one end of the second spring is fixedly connected to the inner wall of the shaft, and the other end of the second spring is fixedly connected to the outside of the insertion block.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the flange can be disassembled and installed through the cooperation of the pressing rod, spring 2, connecting rod, insertion block and other structures. The detachable flange design makes it easier for maintenance personnel to access and inspect the connection between the drive shaft and the flange, which helps to discover and solve potential problems in a timely manner and improve the reliability and maintainability of the system.

[0015] 2. In this utility model, the rotating plate is reset through the cooperation of the connecting frame, rotating plate, spring, connecting plate and other structures. The rotating plate at the top of the shaft can be automatically reset, which means that after maintenance or adding lubricating oil, the rotating plate can be reset to the correct position without manual intervention. This improves the ease of use of the system and reduces the workload of the operator. Attached Figure Description

[0016] Figure 1 This is a perspective view of a drive shaft for a fan proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the rotating shaft structure of a drive shaft for a fan proposed in this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram of the pressing rod structure of a drive shaft for a fan proposed in this utility model.

[0020] Legend:

[0021] 1. Shaft; 2. Connecting frame; 3. Fixed shaft; 4. Rotating plate; 5. Limiting ring; 6. Spring 1; 7. Connecting plate; 8. Rotating shaft; 9. Spiral fan blade; 10. Pressing rod; 11. Cavity; 12. Spring 2; 13. Connecting rod; 14. Insertion block; 15. Limiting block; 16. Limiting groove; 17. Slot; 18. Flange. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1-3 This utility model provides an embodiment of a fan drive shaft, comprising a shaft body 1, a connecting frame 2 fixedly connected to the inner wall of the top end of the shaft body 1, the connecting frame 2 being designed to fix a fixed shaft 3, the fixed shaft 3 being fixedly connected inside the connecting frame 2, the fixed shaft 3 being designed to allow rotation of a rotating plate 4 to the outside of the fixed shaft 3, limit rings 5 ​​being fixedly connected to both the front and rear sides of the outside of the fixed shaft 3, the limit rings 5 ​​being designed to prevent the fixed shaft 3 from falling off, the rotating plate 4 being rotatably connected to the outside of the fixed shaft 3, and an elastic element being fixedly connected to the bottom of the rotating plate 4. The component, the elastic component, includes a connecting plate 7, which is designed to fix the spring 6. The top of the connecting plate 7 is fixedly connected to the inner wall of the right side of the shaft 1. Multiple springs 6 are fixedly connected to the top of the connecting plate 7. One end of the spring 6 is fixedly connected to the bottom of the rotating plate 4, and the other end of the spring 6 is fixedly connected to the top of the connecting plate 7. A rotating shaft 8 is rotatably connected inside the shaft 1. A spiral fan blade 9 is fixedly connected to the outside of the rotating shaft 8. The spiral fan blade 9 is designed to allow lubricating oil to be evenly filled to the outside of the rotating shaft 8 through the spiral fan blade 9.

[0024] like Figure 4As shown, pressing rods 10 are slidably connected to the upper and lower sides of the shaft 1. The pressing rods 10 are designed to drive the connecting rod 13 to rotate. A cavity 11 is formed inside the shaft 1, and a limiting groove 16 is formed inside the cavity 11. The limiting groove 16 is designed to allow the limiting block 15 to slide inside the limiting groove 16. A second spring 12 is set inside the cavity 11. One end of the second spring 12 is fixedly connected to the inner wall of the shaft 1, and the other end of the second spring 12 is fixedly connected to the outside of the insertion block 14. The insertion block 14 is designed to engage with the inside of the slot 17. The pressing rods... One end of the connecting rod 13 is rotatably connected to the outside of the shaft 10. The connecting rod 13 is rotatably connected to the inside of the cavity 11. The other end of the connecting rod 13 is fixedly connected to the insertion block 14. The insertion block 14 is slidably connected to the inside of the shaft 1. A limiting component is fixedly connected to the outside of the insertion block 14. The limiting component includes a limiting block 15. A limiting groove 16 is slidably connected to the outside of the limiting block 15. The outside of the limiting block 15 is fixedly connected to the outside of the insertion block 14. A flange 18 is fixedly connected to the right side of the shaft 1. A slot 17 is opened on the outside of the flange 18. The outside of the insertion block 14 engages with the inside of the slot 17.

[0025] Working principle: When replacing flange 18, pulling up the pressing rod 10 causes the connecting rod 13 to rotate. This rotation causes the insertion block 14 to slide to the left, squeezing the spring 12. The spring 12 then separates the insertion block 14 from the external groove 17 of flange 18, thus disassembling flange 18. Pressing the pressing rod 10 causes the connecting rod 13 to rotate, causing the insertion block 14 to slide to the right. The insertion block 14 then squeezes the spring 12. The spring will rebound, causing the insertion block 14 to engage with the slot 17 on the outside of the flange 18, thus enabling the flange 18 to be installed. Because of the limit block 15, the insertion block 14 will not disengage from the inside of the shaft 1. When adding lubricating oil to the inside of the shaft 1, the bottle filled with lubricating oil is inserted into the inside of the shaft 1, and then the bottle enters the inside of the shaft 1 through the rotating plate 4. Because of the spring 6, when the bottle squeezes the rotating plate 4, the rotating plate 4 will also squeeze the spring 6. When the lubricating oil is added to the inside of the shaft 1, when the bottle is pulled out, the spring 6 rebounds, causing the rotating plate 4 to reset, thus achieving the automatic reset of the top rotating plate 4 while adding lubricating oil to the inside of the shaft 1.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drive shaft for a fan comprising a shaft body (1), characterised in that: The inner wall of the top end of the shaft body (1) is fixedly connected with a connecting frame (2), the inner part of the connecting frame (2) is fixedly connected with a fixed shaft (3), the outer part of the fixed shaft (3) is fixedly connected with a limiting ring (5) on both sides, the outer part of the fixed shaft (3) is rotatably connected with a rotating plate (4), the bottom of the rotating plate (4) is fixedly connected with an elastic component, the inner part of the shaft body (1) is rotatably connected with a rotating shaft (8), the outer part of the rotating shaft (8) is fixedly connected with a spiral fan blade (9), the outer part of the shaft body (1) is slidably connected with a pressing rod (10) on both sides, the inner part of the shaft body (1) is provided with a cavity (11), the inner part of the cavity (11) is provided with a spring two (12), one end of the outer part of the pressing rod (10) is rotatably connected with an adapter rod (13), the other end of the adapter rod (13) is fixedly connected with an insertion block (14), the outer part of the insertion block (14) is fixedly connected with a limiting component.

2. A drive shaft for a fan as claimed in claim 1, characterized in that: The elastic component comprises a connecting plate (7), the top of the connecting plate (7) is fixedly connected with the inner right wall of the shaft body (1), and a plurality of spring one (6) is fixedly connected with the top of the connecting plate (7).

3. The drive shaft of claim 1, wherein: The limiting component comprises a limiting block (15), the outer part of the limiting block (15) is slidably connected with a limiting groove (16), and the outer part of the limiting block (15) is fixedly connected with the outer part of the insertion block (14).

4. The drive shaft of claim 1, wherein: The right side of the shaft body (1) is fixedly connected with a flange plate (18), the outer part of the flange plate (18) is provided with a clamping groove (17), and the outer part of the insertion block (14) is clamped with the inner part of the clamping groove (17).

5. The drive shaft of claim 1, wherein: The inner part of the cavity (11) is provided with a limiting groove (16).

6. A drive shaft for a fan as claimed in claim 1, characterized in that: The outer part of the adapter rod (13) is rotatably connected with the inner part of the cavity (11), and the outer part of the insertion block (14) is slidably connected with the inner part of the shaft body (1).

7. The drive shaft of claim 2, wherein: One end of the spring one (6) is fixedly connected with the bottom of the rotating plate (4), and the other end of the spring one (6) is fixedly connected with the top of the connecting plate (7).

8. The drive shaft of claim 1, wherein: One end of the spring two (12) is fixedly connected with the inner wall of the shaft body (1), and the other end of the spring two (12) is fixedly connected with the outer part of the insertion block (14).

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