Hybrid synchronous transmission device

Abstract

The utility model discloses a hybrid synchronous transmission device, which is characterized in that a synchronous wheel and a gearless wheel form a synchronous belt on the synchronous wheel side, and the length of the synchronous belt is greater than or equal to the sum of the length of the synchronous belt at the swing angle of the synchronous wheel and the length of the synchronous belt at the wrap angle of the synchronous wheel; the length of the toothless belt is larger than or equal to the sum of the length of the toothless belt at the gearless swing angle and the length of the toothless belt at the gearless wrap angle, the toothless belt wheel and the toothless belt are matched to rotate all the time in the whole transmission process, and when position deviation exists between the axes of the two transmission wheels, relative to the rigidity of the synchronous belt, the transmission speed is increased. The toothless part of the mixing belt can be a flexible belt, and the synchronous belt is only meshed with one synchronous wheel, so that abrasion caused by dislocation can be avoided.

Description

Technical Field

[0001] The present invention relates to a transmission device, and more particularly to a hybrid synchronous transmission device. Background Art

[0002] The structure of a swing reducer in the patent 2023212067083 is simple. When using a lead screw and a synchronous belt for speed reduction, since it is difficult to adjust the parallelism of the axes of the two synchronous pulleys and the system rigidity problem changes continuously, the synchronous belt and the synchronous pulley are distorted, resulting in inaccurate transmission and large transmission noise. Since the synchronous belt is basically a rigid body, it will also cause serious wear of the synchronous belt and the synchronous pulley. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a hybrid synchronous transmission device, which can effectively solve the deficiencies in the prior art.

[0004] The invention is achieved through the following technical solutions: A hybrid synchronous transmission device for a swing reducer, characterized in that: one transmission pulley is a synchronous belt pulley, and the other transmission pulley is a toothed belt pulley. The swing angle of the synchronous belt pulley is α1, the wrapping angle between the synchronous belt and the synchronous belt pulley is α2, the pitch diameter of the synchronous belt pulley is D1, and the length of the synchronous belt is not less than The swing angle of the toothed belt pulley is α3, the wrapping angle between the toothed belt and the toothed belt pulley is α4, the outer diameter of the toothed belt pulley is D2, and the length of the toothed belt is not less than

[0005] As a preferred technical solution, the toothed belt is a flexible belt.

[0006] As a preferred technical solution, when the inner side of the annular toothed belt and the outer side of the synchronous belt are in a close state, they are bonded or sewn.

[0007] As a preferred technical solution, the two ends of the toothed belt and the synchronous belt are connected to form an annular belt.

[0008] The beneficial effects of the present invention are: The present invention uses a synchronous pulley and a gearless pulley to form a synchronous pulley side with a synchronous belt. The length of the synchronous belt is greater than or equal to the sum of the swing angle of the synchronous pulley and the wrap angle between the synchronous belt and the synchronous pulley. The length at the angle is the total belt length minus the length of the synchronous belt, which is the length of the toothed belt. During the entire transmission process, the toothed belt pulley always rotates in cooperation with the toothed belt. When there is a positional deviation between the axes of the two transmission pulleys, the toothed part of the rigid hybrid belt relative to the synchronous belt can be a flexible belt, and the synchronous belt only needs to mesh with one synchronous pulley to avoid wear caused by misalignment. Brief Description of the Drawings

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0010] Figure 1 Schematic diagram of the prior art synchronous pulley drive of the present invention;

[0011] Figure 2 Schematic diagram of the hybrid belt drive of the present invention;

[0012] Figure 3 Schematic diagram of the internal tensioning of the hybrid belt of the present invention;

[0013] Figure 4 Schematic diagram of the external tensioning of the hybrid belt of the present invention;

[0014] Figure 5 Schematic diagram of the parallel tensioning of the hybrid belt of the present invention;

[0015] Figure 6 Schematic diagram of the hybrid belt used in a swing reducer of the present invention;

[0016] Figure 7 Schematic diagram of the drive with both ends of the synchronous belt and the flat belt connected of the present invention;

[0017] Explanation of the reference numerals in the drawings:

[0018] 1. Synchronous pulley; 2. Gearless; 3. Synchronous belt; 4. Toothless belt; 5. Internal tensioning pulley; 6. External tensioning pulley; 7. Synchronous belt mounting seat; 8. Synchronous pulley bearing; 9. Synchronous pulley shaft; 10. Tensioning spring; 11. Tensioning bearing seat; 12. Tensioning bearing; 13. Toothless belt pulley shaft; 14. Connecting block; 15. Nut; 16. Motor; 17. Lead screw; 18. Connector. Detailed implementation manners

[0019] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0020] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or features with similar purposes. That is, unless specifically stated, each feature is only an example in a series of equivalent or similar features.

[0021] Embodiment 1

[0022] As Figure 2As shown in the figure, a synchronous pulley 1 and a gearless pulley 2 are installed in parallel. There is a synchronous belt 3 on the side of the synchronous pulley 1, and a toothless belt 4 is provided on the entire outer circumference of the gearless pulley 2. A numerical control motor 16 drives a lead screw 17 to rotate, and the lead screw 17 drives a nut 15 to translate. The nut 15 is connected to the toothless belt 4 through a connecting block 14, driving the toothless belt 4 to move and driving the synchronous pulley to rotate through the synchronous belt, achieving the purpose of speed reduction. Assuming that the wrap angle of the synchronous belt is 180° and the maximum rotation angle of the synchronous pulley 1 is 180°, the length of the synchronous belt can cover the circumference of the 360° synchronous pulley. The relationship and length between the toothless belt and the gearless pulley are the same as those of the synchronous belt.

[0023] Replace the synchronous pulley with a toothless pulley. The length of the synchronous belt only needs to satisfy the circumference of the swing angle of the synchronous pulley plus the wrap angle on the synchronous pulley. In this way, when the tension is large and there is an error in the parallelism of the axes of the synchronous pulley and the toothless pulley, since the synchronous belt 3 only needs to mesh with one synchronous pulley 1, the torsional force applied to the synchronous belt 3 is greatly reduced, and the cost is reduced at the same time. In this embodiment, the toothless belt 4 is an aramid belt and is connected to the synchronous belt 3, which can be bonded or stitched with a thread.

[0024] Embodiment 2

[0025] The difference from Embodiment 1 is that there is a tensioning device, such as Figure 3 As shown in the figure, there is an internal tensioning pulley 5, as Figure 4 As shown in the figure, there is an external tensioning pulley 6.

[0026] Embodiment 3

[0027] The difference from Embodiment 1 is that, as Figure 5 As shown in the figure, one end of a synchronous belt mounting seat 7 is provided with a synchronous pulley bearing 8 and a synchronous pulley shaft 9. The synchronous pulley 1 is installed on the synchronous pulley shaft 9. The other end of the synchronous belt mounting seat 7 is provided with a tension spring 10, which pushes the tension bearing seat 11 outwards. The tension bearing seat 11 is provided with a tension bearing 12 and a toothless belt pulley shaft 13. The gearless pulley 2 is installed on the toothless belt pulley shaft 13. When the composite belt is installed, the tension spring 10 pushes the gearless pulley 2 outwards to achieve the purpose of tensioning.

[0028] Embodiment 4

[0029] The difference from the above embodiments is that, as Figure 7 As shown in the figure, both ends of the synchronous belt and the flat belt are connected at the joint 18 position. The connection method can be a belt buckle connection, or the heads can be overlapped and glued or stitched.

[0030] The beneficial effects of the present invention are as follows: a synchronous wheel and a gearless wheel are used to form a synchronous belt on the synchronous wheel side, the length of the synchronous belt is greater than or equal to the sum of the length of the synchronous belt at the swing angle of the synchronous wheel and the length of the synchronous belt at the wrap angle between the synchronous belt and the synchronous wheel, the length of the toothless belt is greater than or equal to the sum of the length of the toothless belt at the swing angle of the gearless wheel and the length of the toothless belt at the wrap angle between the toothless belt and the gearless wheel, the toothless belt wheel always rotates in coordination with the toothless belt during the entire transmission process, when there is a position deviation between the axes of the two transmission wheels, relative to the rigidity of the synchronous belt, the toothless part of the hybrid belt can be a flexible belt, and the synchronous belt only needs to be engaged with one synchronous wheel to avoid wear caused by misalignment.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A hybrid synchronous transmission device for a swing reducer, characterized in that: One transmission wheel is a synchronous pulley, and the other transmission wheel is a toothless pulley. The swing angle of the synchronous pulley is α1, the wrapping angle between the synchronous belt and the synchronous pulley is α2, the middle diameter of the synchronous pulley is D1, and the length of the synchronous belt is not less than The swing angle of the toothless pulley is α3, the wrapping angle between the toothless belt and the toothless pulley is α4, the outer diameter of the toothless pulley is D2, and the length of the toothless belt is not less than 2. The hybrid synchronous transmission device according to claim 1, characterized in that: Toothless belts are flexible belts.

3. The hybrid synchronous transmission device according to claim 1, characterized in that: The toothless belt is a ring belt with the inner side and the synchronous belt outer side close to each other and then glued or sewn together.

4. The hybrid synchronous transmission device according to claim 1, characterized in that: The toothless belt and the synchronous belt are connected at both ends to form an endless belt.

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