Fan belt pulley convenient to replace
By introducing structures such as pins, expansion tubes and limit rings into the fan pulley, the problem of difficult replacing the pulley and difficult positioning is solved, the stability and accuracy of the replacement process are achieved, and the service life of the pulley is extended.
Patent Information
- Application Number
- CN202422888520.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The replacement of existing fan pulleys is difficult and difficult to position, resulting in easy damage to the pulley surface and increasing installation difficulty.
A fan pulley that is easy to replace is designed, using structures such as pins, expansion tubes, limit rings and safety gaskets. The diameter of the expansion tube and limit ring positioning are expanded by tightening bolts to ensure the stability and precise positioning of the pulley main body.
It reduces the difficulty of replacing pulleys, improves structural stability and belt installation accuracy during replacement, and extends the service life of pulleys.
Smart Images
Figure CN223270555U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fan pulleys, in particular to a fan pulley which is easy to replace. Background Art
[0002] The fan pulley is the component that connects the motor and the fan impeller, typically made of metal. It's mounted on the motor shaft and connected to the fan impeller via a belt, transferring the motor's power to the impeller and ensuring proper fan operation. The fan pulley's function is to transfer the motor's power to the fan impeller, ensuring the fan operates properly.
[0003] The fan pulley is an important transmission component in the fan. The quality of the pulley will directly affect whether the fan can work normally. However, in the daily maintenance process, the pulley needs to be replaced, but the replacement is difficult. During the replacement process, some hammers, awls and other metal tools are needed to hit the pulley. This replacement method is easy to damage the pulley surface due to the high force, thereby reducing the service life of the pulley. Moreover, it is not easy to locate during the process of repeated replacements, which increases the difficulty of belt installation. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a fan pulley that is easy to replace, overcomes the deficiencies of the prior art, and effectively solves the problems of difficulty in replacing and positioning the fan pulley.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A fan pulley that is easy to replace, comprising a pulley body, a shaft pin slidably connected to the pulley body, a latch provided between the shaft pin and the pulley body, a positioning column provided inside the latch, an expansion tube provided on the outer wall of one end of the positioning column, and a first bolt fixedly connected to the inner wall of the expansion tube;
[0007] The outer wall of the shaft pin is fixedly connected to the limit ring, and a safety gasket is provided on the outer wall of one end of the shaft pin. A second bolt is fixedly connected to the center of the inner wall of one side of the safety gasket.
[0008] Preferably, the outer wall of one end of the second bolt is fixedly connected to the inner wall of the shaft pin.
[0009] Preferably, both the outer wall of the shaft pin and the inner wall of the pulley body are provided with a slot, and the latch is slidably connected to the inner wall of the slot.
[0010] Preferably, a notch is provided on the side outer wall of the expansion tube.
[0011] Preferably, a belt is transmission-connected to the inner wall of the pulley body.
[0012] Preferably, a coupling is installed on the outer wall of one end of the shaft pin, and the shaft pin is fixedly connected to the fan motor through the coupling.
[0013] The beneficial effects of the utility model are:
[0014] 1. The fan pulley designed for easy replacement has a main pulley body that can be limited by a latch. By tightening the first bolt, the diameter of the expansion tube can be expanded, thereby increasing the firmness between the main pulley body, the shaft pin, and the latch, which not only ensures the stability of the structure but also reduces the difficulty of replacement.
[0015] 2. The fan pulley designed for easy replacement has a limit ring added to the shaft pin. The limit ring can serve as a basic positioning structure, so that the pulley body can be accurately positioned when it is close to the limit ring. On this basis, the safety gasket is fixed to one end of the shaft pin to prevent the pulley body from moving, thereby ensuring the accurate positioning of the pulley body and reducing the difficulty of belt installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of a fan pulley that is easy to replace proposed by the utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of a pulley body of a fan pulley that is easy to replace proposed by the utility model;
[0018] Figure 3 The utility model provides a schematic diagram of the split structure of the shaft pin and latch of a fan pulley that is easy to replace.
[0019] In the figure: 1. Pulley body; 2. Axle pin; 3. Pin; 4. Positioning column; 5. Expansion tube; 6. First bolt; 7. Limiting ring; 8. Safety gasket; 9. Second bolt; 10. Slot; 11. Notch; 12. Belt; 13. Fan motor; 14. Coupling. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0021] Example 1, refer to Figure 2-3 A fan pulley that is easy to replace includes a pulley body 1, an axle pin 2 is slidably connected inside the pulley body 1, and a latch 3 is provided between the axle pin 2 and the pulley body 1, a positioning column 4 is provided inside the latch 3, and an expansion tube 5 is provided on the outer wall of one end of the positioning column 4, and a first bolt 6 is fixedly connected to the inner wall of the expansion tube 5.
[0022] In this embodiment, the pulley body 1 can be limited by the pin 3, and the diameter of the expansion tube 5 can be expanded by tightening the first bolt 6, thereby increasing the firmness between the pulley body 1, the shaft pin 2 and the pin 3, which not only ensures the stability of the structure but also reduces the difficulty of replacement.
[0023] Example 2, refer to Figure 3 , a fan pulley that is easy to replace, the outer wall of the shaft pin 2 is fixedly connected to the limit ring 7, and a safety gasket 8 is provided on the outer wall of one end of the shaft pin 2, and a second bolt 9 is fixedly connected to the center of the inner wall on one side of the safety gasket 8.
[0024] In this embodiment, since a limit ring 7 is added to the shaft pin 2, the limit ring 7 can serve as a basic positioning structure, so that the pulley body 1 can be accurately positioned when it is close to the limit ring 7. On this basis, by fixing the safety gasket 8 to one end of the shaft pin 2, the pulley body 1 can be prevented from moving, thereby ensuring the accurate positioning of the pulley body 1 and reducing the difficulty of installing the belt 12.
[0025] Reference Figure 3 The outer wall of one end of the second bolt 9 is fixedly connected to the inner wall of the shaft pin 2.
[0026] Reference Figure 2-3 A slot 10 is provided on the outer wall of the shaft pin 2 and the inner wall of the pulley body 1 , and the latch pin 3 is slidably connected to the inner wall of the slot 10 .
[0027] Reference Figure 3 A notch 11 is provided on the outer side wall of the expansion tube 5 .
[0028] Reference Figure 1 A belt 12 is connected to the inner wall of the pulley body 1 for transmission.
[0029] Reference Figure 1 A coupling 14 is installed on the outer wall of one end of the shaft pin 2, and the shaft pin 2 is fixedly connected to the fan motor 13 through the coupling 14.
[0030] Working principle: When installing the pulley body 1, first place the latch 3 on the slot 10, slide the pulley body 1 onto the shaft pin 2, and close it to the limit ring 7, then tighten the first bolt 6 to expand the diameter of the expansion tube 5, increase the firmness between the pulley body 1, shaft pin 2 and latch 3, and then fix the safety washer 8 to one end of the shaft pin 2 to prevent the pulley body 1 from moving;
[0031] When disassembling the pulley body 1, first unscrew the second bolt 9, remove the safety washer 8, and then unscrew the first bolt 6 to reduce the diameter of the expansion tube 5, and then the pulley body 1 can be removed.
[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A fan pulley that is easy to replace, comprising a pulley body (1), characterized in that: The pulley body (1) is internally connected with an axle pin (2) in a sliding manner, and a latch pin (3) is provided between the axle pin (2) and the pulley body (1), a positioning column (4) is provided inside the latch pin (3), and an expansion tube (5) is provided on the outer wall of one end of the positioning column (4), and a first bolt (6) is fixedly connected to the inner wall of the expansion tube (5); The outer wall of the shaft pin (2) is fixedly connected to a limit ring (7), and a safety gasket (8) is provided on the outer wall of one end of the shaft pin (2), and a second bolt (9) is fixedly connected to the center of the inner wall of one side of the safety gasket (8).
2. The fan pulley that is easy to replace according to claim 1, characterized in that: The outer wall of one end of the second bolt (9) is fixedly connected to the inner wall of the shaft pin (2).
3. The fan pulley that is easy to replace according to claim 1, characterized in that: The outer wall of the shaft pin (2) and the inner wall of the pulley body (1) are both provided with a clamping groove (10), and the latch pin (3) is slidably connected to the inner wall of the clamping groove (10).
4. The easily replaceable fan pulley according to claim 1, characterized in that: A notch (11) is provided on the side outer wall of the expansion tube (5).
5. The easily replaceable fan pulley according to claim 1, characterized in that: A belt (12) is connected to the inner wall of the pulley body (1).
6. The easily replaceable fan pulley according to claim 1, characterized in that: A coupling (14) is installed on the outer wall of one end of the shaft pin (2), and the shaft pin (2) is fixedly connected to the fan motor (13) through the coupling (14).