Connecting structure of rotating shaft and belt pulley
By introducing a limiting mechanism into the connecting structure between the pulley and the rotary shaft, the stability of the connection is enhanced, and the problem of shaking and wear of the pulley and the rotary shaft in the prior art is solved, which extends the service life.
Patent Information
- Application Number
- CN202421452311.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The connecting structure between the existing pulley and the rotary shaft is prone to shaking during rotation, resulting in wear and affecting service life.
A connecting structure including a rotating shaft and a pulley of the limiting mechanism is designed, and the stability of the connecting shaft and the pulley body is enhanced through components such as positioning columns, positioning grooves and limiting screws.
It effectively avoids shaking of the connecting shaft and pulley body during rotation, reduces wear and extends the service life of the pulley and rotary shaft.
Smart Images
Figure CN222479377U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pulley transmission, in particular to a connecting structure of a rotating shaft and a pulley. Background Art
[0002] Belt drive is a form of mechanical transmission, consisting of one or more belts and two pulleys. The two pulleys are installed on the driving shaft and the driven shaft respectively. The belt is then tightened on the two pulleys, and the friction between the belt and the two pulleys is used to transmit motion and power.
[0003] Most of the existing pulleys are installed on the rotating shaft through a keyway. When the pulley is installed in this way, it is easy for the pulley and the rotating shaft to shake during rotation, causing wear between the pulley and the rotating shaft, affecting the service life of the pulley and the rotating shaft. For this reason, we propose a connection structure between the rotating shaft and the pulley. Utility Model Content
[0004] The main purpose of the utility model is to provide a connection structure between a rotating shaft and a pulley, which can effectively solve the technical problems in the background technology.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a connecting structure of a rotating shaft and a pulley, comprising a pulley body, a shaft hole groove is provided in the center of the pulley body, a belt groove is provided on the outer side of the pulley body, a connecting shaft is provided at one end of the pulley body, the lower end of the connecting shaft is inserted into the shaft hole groove, a threaded connecting end is provided at the lower end of the connecting shaft, a pressing plate is provided at one end of the pulley body, the pressing plate is sleeved on the outer side of the threaded connecting end, a positioning nut is provided at one end of the pressing plate, the positioning nut is threadedly connected to the threaded connecting end, a positioning column is provided at the upper end of the pressing plate, a positioning groove is provided on the outer side of the pulley body, the positioning groove is adapted to the positioning column, a limiting hole is provided on one side of the upper end of the positioning column, a limiting mechanism is provided on the upper end of the pulley body, and the limiting mechanism positions the positioning column through the limiting hole; the limiting mechanism comprises a limiting frame, the lower end of the limiting frame is fixedly connected to the pulley body, a threaded mounting groove is provided on the outer side of the limiting frame, and a limiting screw is provided inside the threaded mounting groove.
[0006] Preferably, a fixing plate is provided at one end of the limiting frame, one end of the fixing plate is fixedly connected to the limiting frame, an adjusting rod is provided at the upper end of the fixing plate, and the adjusting rod is threadedly connected to the fixing plate.
[0007] Preferably, a positioning plate is provided at the lower end of the fixing plate, the positioning plate is a hard metal plate, and the positioning plate is movably connected to the adjusting rod.
[0008] Preferably, a positioning hole is provided at the lower end of the positioning plate, and the positioning hole is adapted to the shape of the limiting screw. By providing the positioning hole, the limiting effect of the positioning plate can be increased to prevent the limiting screw from loosening.
[0009] Preferably, the positioning column is a cross-shaped metal rod, and the lower end of the positioning column is fixedly connected to the pressure plate.
[0010] Preferably, the outer thread of the threaded connection end is a reverse thread, and the threaded connection end is fixedly connected to the connecting shaft. By setting the outer thread of the threaded connection end to a reverse thread, the positioning nut can be prevented from falling off from the outer side of the threaded connection end.
[0011] Beneficial Effects
[0012] The utility model provides a connection structure between a rotating shaft and a pulley, which has the following beneficial effects:
[0013] (1) The connection structure between the rotating shaft and the pulley can increase the stability of the connection between the connecting shaft and the pulley body by setting a limiting mechanism, avoid shaking of the connecting shaft and the pulley body during rotation, reduce the wear between the pulley and the rotating shaft, and extend the service life of the pulley and the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the implementation mode of the present utility model or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;
[0017] Figure 3 It is a partial cross-sectional schematic diagram of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the limit mechanism of the utility model
[0019] Legend:
[0020] 1. Pulley body; 2. Shaft hole groove; 3. Belt groove; 4. Connecting shaft; 5. Threaded connection end; 6. Pressure plate; 7. Positioning nut; 8. Positioning column; 9. Limiting hole; 10. Positioning groove; 11. Limiting mechanism; 12. Limiting frame; 13. Threaded mounting groove; 14. Limiting screw; 15. Fixing plate; 16. Adjusting rod; 17. Positioning plate. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0022] Embodiment 1: A connection structure between a rotating shaft and a pulley, such as Figure 1 - Figure 3 As shown, it includes a pulley body 1, a shaft hole groove 2 is arranged in the center of the pulley body 1, a belt groove 3 is arranged on the outside of the pulley body 1, a connecting shaft 4 is arranged at one end of the outer side of the pulley body 1, the connecting shaft 4 is a metal cylindrical rod, the diameter of the connecting shaft 4 is adapted to the shaft hole groove 2, the lower end of the connecting shaft 4 is inserted into the shaft hole groove 2, a threaded connection end 5 is arranged at the lower end of the connecting shaft 4, the threaded connection end 5 is a reverse thread, and the upper end of the threaded connection end 5 is fixedly connected to the connecting shaft 4, a pressing plate 6 is arranged at one end of the pulley body 1 away from the connecting shaft 4, the pressing plate 6 is a circular metal plate, the pressing plate 6 is sleeved on the outside of the threaded connection end 5, the pressing plate 6 is movably connected to the threaded connection end 5, and the pressing plate 6 is away from the pulley body 1. A positioning nut 7 is provided at the end, and the center of the positioning nut 7 is threadedly connected to the threaded connection end 5. A positioning column 8 is provided at the upper end of the pressure plate 6. The positioning column 8 is a cross-shaped metal rod. The lower end of the positioning column 8 is fixedly connected to the pressure plate 6. A positioning groove 10 is provided at the position of the pulley body 1 relative to the positioning column 8. The shape of the positioning groove 10 is adapted to the positioning column 8. The positioning column 8 can be inserted into the positioning groove 10. The upper end of the positioning column 8 passes through the positioning groove 10 and extends to the upper end of the pulley body 1. A limiting hole 9 is provided on one side of the positioning column 8 located at the upper end of the pulley body 1. A limiting mechanism 11 is provided at the upper end of the pulley body 1 relative to the position of the positioning column 8. The limiting mechanism 11 positions the positioning column 8 through the limiting hole 9.
[0023] Embodiment 2: A connection structure between a rotating shaft and a pulley, based on Embodiment 1 Figure 1 - Figure 3 As shown, the limiting mechanism 11 includes a limiting frame 12, which is a rectangular block. A plug-in slot is arranged in the center of the limiting frame 12. The shape of the plug-in slot is adapted to the positioning column 8. The positioning column 8 can be inserted into the plug-in slot. The limiting frame 12 is vertically installed at the upper end of the positioning slot 10. The lower end of the limiting frame 12 is fixedly connected to the pulley body 1. Threaded mounting grooves 13 are arranged at both ends of the outer side of the limiting frame 12. One end of the threaded mounting groove 13 is connected to the plug-in slot inside the limiting frame 12. A limiting screw 14 is arranged at one end of the outer side of the limiting frame 12. One end of the limiting screw 14 is threadedly installed inside the threaded mounting groove 13. One end of the limiting screw 14 can extend to the limiting position through the threaded mounting groove 13. At the other end of the frame 12, a fixing plate 15 is provided at one end of the outer side of the limit frame 12 away from the limit screw 14. The fixing plate 15 is a rectangular plate. One end of the fixing plate 15 is fixedly connected to the limit frame 12. An adjusting rod 16 is provided at the upper end of the fixing plate 15. The lower end of the adjusting rod 16 is threadedly connected to the fixing plate 15. A positioning plate 17 is provided at the lower end of the fixing plate 15. The positioning plate 17 is a hard metal plate. The upper end of the positioning plate 17 is movably connected to the adjusting rod 16. A positioning port is provided at the lower end of the positioning plate 17 relative to the position of the limit screw 14. The shape of the positioning port is adapted to the limit screw 14. The positioning plate 17 can be clamped on the upper end of the limit screw 14 to limit the limit screw 14.
[0024] It should be noted that the utility model is a connection structure between a rotating shaft and a pulley. During installation, first insert the lower end of the connecting shaft 4 into the shaft hole groove 2, and ensure that the threaded connection end 5 at the lower end of the connecting shaft 4 extends to the lower end of the pulley body 1, and then sleeve the pressing plate 6 on the outside of the threaded connection end 5. During the installation of the pressing plate 6, it is necessary to insert the positioning column 8 into the positioning groove 10, and then thread the positioning nut 7 with the threaded connection end 5. The positioning nut 7 is installed and tightened by a tool, and the pressing plate 6 is fixed to the pulley body through the positioning nut 7. 1 is tightly fitted, and then one end of the limit screw 14 is installed inside the threaded installation groove 13. By rotating the limit screw 14, the limit screw 14 passes through the limit hole 9 and extends from the other end of the limit frame 12. The limit screw 14 can position the positioning column 8 and the limit frame 12. Finally, the adjustment rod 16 is rotated. The adjustment rod 16 pushes the positioning plate 17 to move downward and connect with the limit screw 14 during movement. The limit screw 14 is limited by the positioning plate 17 to prevent the limit screw 14 from loosening during the rotation of the pulley body 1. By setting the limit mechanism 11, the connecting shaft 4 and the pulley body 1 can be fixedly connected together through the positioning column 8, the stability of the connection between the connecting shaft 4 and the pulley body 1 is increased, the shaking of the connecting shaft 4 and the pulley body 1 during rotation is prevented, the wear between the pulley and the rotating shaft is reduced, and the service life of the pulley and the rotating shaft is extended.
[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A connecting structure between a rotating shaft and a pulley, comprising a pulley body (1), wherein a shaft hole groove (2) is provided in the center of the pulley body (1), a belt groove (3) is provided on the outer side of the pulley body (1), a connecting shaft (4) is provided at one end of the pulley body (1), the lower end of the connecting shaft (4) is inserted into the shaft hole groove (2), and a threaded connecting end (5) is provided at the lower end of the connecting shaft (4), characterized in that: A pressure plate (6) is provided at one end of the pulley body (1), and the pressure plate (6) is sleeved on the outside of the threaded connection end (5). A positioning nut (7) is provided at one end of the pressure plate (6), and the positioning nut (7) is threadedly connected to the threaded connection end (5). A positioning column (8) is provided at the upper end of the pressure plate (6). A positioning groove (10) is provided at the outer side of the pulley body (1), and the positioning groove (10) is adapted to the positioning column (8). A limiting hole (9) is provided on one side of the upper end of the positioning column (8). A limiting mechanism (11) is provided at the upper end of the pulley body (1), and the limiting mechanism (11) positions the positioning column (8) through the limiting hole (9); the limiting mechanism (11) comprises a limiting frame (12), and the lower end of the limiting frame (12) is fixedly connected to the pulley body (1), and a threaded mounting groove (13) is provided at the outer side of the limiting frame (12), and a limiting screw (14) is provided inside the threaded mounting groove (13).
2. The connection structure between a rotating shaft and a pulley according to claim 1, characterized in that: A fixing plate (15) is provided at one end of the limiting frame (12), one end of the fixing plate (15) is fixedly connected to the limiting frame (12), an adjusting rod (16) is provided at the upper end of the fixing plate (15), and the adjusting rod (16) is threadedly connected to the fixing plate (15).
3. The connection structure between a rotating shaft and a pulley according to claim 2, characterized in that: A positioning plate (17) is provided at the lower end of the fixing plate (15). The positioning plate (17) is a hard metal plate. The positioning plate (17) is movably connected to the adjusting rod (16).
4. The connection structure between a rotating shaft and a pulley according to claim 3, characterized in that: The lower end of the positioning plate (17) is provided with a positioning opening, which is matched with the shape of the limiting screw (14).
5. The connection structure between a rotating shaft and a pulley according to claim 1, characterized in that: The positioning column (8) is a cross-shaped metal rod, and the lower end of the positioning column (8) is fixedly connected to the pressing plate (6).
6. The connection structure between a rotating shaft and a pulley according to claim 1, characterized in that: The outer thread of the threaded connection end (5) is a reverse thread, and the threaded connection end (5) is fixedly connected to the connecting shaft (4).