Hybrid synchronous transmission device

Abstract

The invention discloses a hybrid synchronous transmission device, which is characterized in that a synchronous wheel and a gearless wheel form a synchronous belt on the side of the synchronous wheel, 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] This invention relates to transmission devices, and more specifically to a hybrid synchronous transmission device. Background Technology

[0002] A swing reducer patent 2023212067083 has a simple structure. When the reducer is reduced by using a lead screw and a timing belt, the parallelism of the axes of the two timing pulleys is difficult to adjust, and the system rigidity will change continuously, causing the timing belt and timing pulleys to twist, resulting in inaccurate transmission and loud transmission noise. Since the timing belt is basically a rigid body, it will also cause severe wear on the timing belt and timing pulleys. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a hybrid synchronous transmission device that effectively overcomes the shortcomings of existing technologies.

[0004] The present invention is achieved through the following technical solution: a hybrid synchronous transmission device for an oscillating reducer, characterized in that: one transmission wheel is a synchronous belt pulley, the other transmission wheel is a toothless belt pulley, the oscillation angle of the synchronous belt pulley is α1, the wrap angle between the synchronous belt and the synchronous belt pulley is α2, the mean diameter of the synchronous belt pulley is D1, and the length of the synchronous belt is not less than [missing information]. The toothless pulley swing angle is α3, the toothless belt and toothless pulley wrap angle is α4, the toothless pulley outer diameter is D2, and the toothless belt length is not less than...

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

[0006] As a preferred technical solution, the toothless belt is glued or sewn together with the inner side of the annular belt and the outer side of the synchronous belt in close contact.

[0007] As a preferred technical solution, the toothless belt and the timing belt are connected at both ends to form a ring belt.

[0008] The beneficial effects of this invention are as follows: This invention uses a synchronous pulley and a gearless pulley to form 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 in terms of angle is the total belt length minus the length of the synchronous belt, which is the length of the toothless belt. Throughout the transmission process, the toothless pulley always rotates in cooperation with the toothless belt. When there is a positional deviation between the axes of the two transmission pulleys, the toothless part of the rigid hybrid belt relative to the synchronous belt can be a flexible belt. The synchronous belt only needs to mesh with one synchronous pulley to avoid wear caused by misalignment. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of a prior art synchronous belt pulley drive according to the present invention;

[0011] Figure 2 This is a schematic diagram of the hybrid belt drive of the present invention;

[0012] Figure 3 This is a schematic diagram of the built-in tensioning of the hybrid belt according to the present invention;

[0013] Figure 4 This is a schematic diagram of the external tensioning of the hybrid belt according to the present invention;

[0014] Figure 5 This is a schematic diagram of the parallel tensioning of the hybrid belt according to the present invention;

[0015] Figure 6 This is a schematic diagram of the hybrid belt of the present invention used in a swing-type speed reducer;

[0016] Figure 7 This is a schematic diagram of the synchronous belt and flat belt connection transmission at both ends of the present invention;

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Synchronous pulley; 2. Gearless; 3. Synchronous belt; 4. Toothless belt; 5. Inner tension pulley; 6. Outer tension pulley; 7. Synchronous belt mounting bracket; 8. Synchronous pulley bearing; 9. Synchronous pulley shaft; 10. Tensioning spring; 11. Tensioning bearing housing; 12. Tensioning bearing; 13. Beltless pulley shaft; 14. Connecting block; 15. Nut; 16. Motor; 17. Lead screw; 18. Connector. Detailed Implementation

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

[0020] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0021] Example 1

[0022] like Figure 2As shown, a synchronous pulley 1 and a gearless belt 2 are installed in parallel. A synchronous belt 3 is located on the side of the synchronous pulley 1, and a toothless belt 4 is located on the entire outer circumference of the gearless belt 2. A CNC motor 16 drives a lead screw 17 to rotate, and the lead screw 17 drives a nut 15 to move. The nut 15 is connected to the toothless belt 4 through a connecting block 14, which drives the toothless belt 4 to move and drive the synchronous pulley to rotate through the synchronous belt, thereby achieving the purpose of deceleration. Assuming that the wrap angle of the synchronous pulley 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 synchronous pulley by 360°. The relationship and length of the toothless belt and the gearless belt are the same as those of the synchronous belt.

[0023] Instead of a synchronous pulley, a toothless pulley is used. The length of the synchronous belt only needs to satisfy the circumference of the synchronous pulley's swing angle plus the wrapping angle on the synchronous pulley. In this way, when the tension is large and there is an error in the parallelism between the synchronous pulley and the toothless pulley axis, 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. In this embodiment, the toothless belt 4 is an aramid belt connected to the synchronous belt 3, which can be glued or sewn together.

[0024] Example 2

[0025] Unlike Example 1, it has a tensioning device, such as Figure 3 As shown, there is an inner tensioning wheel 5, as... Figure 4 As shown, there is an external tensioning wheel 6.

[0026] Example 3

[0027] Unlike Example 1, as Figure 5 As shown, a synchronous belt mounting base 7 has a synchronous pulley bearing 8 and a synchronous pulley shaft 9 installed at one end, and a synchronous pulley 1 installed on the synchronous pulley shaft 9. The other end of the synchronous belt mounting base 7 has a tension spring 10 that pushes the tension bearing seat 11 outward. The tension bearing seat 11 is equipped with a tension bearing 12 and a beltless pulley shaft 13. The beltless pulley shaft 13 is equipped with a gearless 2. When the composite belt is installed, the tension spring 10 pushes the gearless 2 outward to achieve the purpose of tension.

[0028] Example 4

[0029] Unlike the above embodiments, as Figure 7 As shown, the two ends of the synchronous belt and the flat belt are connected at the joint 18. The connection method can be a belt buckle connection, or the heads can be overlapped and glued or sewn together.

[0030] The beneficial effects of this invention are as follows: a synchronous pulley and a gearless belt are used to form a synchronous pulley. 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 pulley and the length of the synchronous belt at the wrap angle of the synchronous pulley. 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 belt and the length of the toothless belt at the wrap angle of the gearless belt. During the entire transmission process, the toothless pulley always rotates in cooperation with the toothless belt. When there is a positional deviation between the axes of the two transmission pulleys, the toothless part of the hybrid belt can be a flexible belt relative to the rigidity of the synchronous belt. The synchronous belt only needs to mesh with one synchronous pulley to avoid wear caused by misalignment.

[0031] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A hybrid synchronous transmission device for an oscillating reducer, characterized in that: One drive pulley is a synchronous belt pulley, and the other is a toothless belt pulley. The swing angle of the synchronous belt pulley is α1, the wrap angle between the synchronous belt and the synchronous belt pulley is α2, the mean diameter of the synchronous belt pulley is D1, and the length of the synchronous belt is not less than... The toothless pulley swing angle is α3, the toothless belt and toothless pulley wrap angle is α4, the toothless pulley outer diameter is D2, and the toothless belt length is not less than...

2. The hybrid synchronous transmission device according to claim 1, characterized in that: The toothless belt is a flexible belt.

3. The hybrid synchronous transmission device according to claim 1, characterized in that: The toothless belt is formed by gluing or sewing the inner side of the annular belt and the outer side of the synchronous belt in close contact.

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

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