Automatic tensioning mechanism of synchronous pulley set

Abstract

The utility model belongs to the technical field of mechanical transmission, and particularly relates to a synchronous pulley set automatic tensioning mechanism which comprises a base plate, a synchronous wheel assembly, an adjusting assembly and a driving assembly. The synchronous wheel assembly comprises a first synchronous wheel, a second synchronous wheel and a synchronous belt. The adjusting assembly comprises an adjusting groove, an adjusting plate and an adjusting roller. The driving assembly comprises a driving air cylinder and a driving block. The driving cylinder comprises a driving cylinder body and a driving piston rod, the driving cylinder body is fixedly connected to the base plate, one end of the driving piston rod is movably connected to the driving cylinder body, and the other end is fixedly connected with the driving block. According to the automatic tensioning mechanism for the synchronous belt wheel set, the tensioning force can be automatically adjusted through the driving air cylinder according to the loosening condition of the synchronous belt, real-time dynamic adjustment of the tensioning force is achieved, tensioning of the synchronous belt is ensured, and therefore the transmission precision is effectively improved, equipment operation is more stable and reliable, and the service life of the equipment is prolonged. And the problem of poor working performance of equipment caused by reduction of transmission precision is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical transmission technology, and in particular relates to an automatic tensioning mechanism for synchronous belt pulleys. Background Technology

[0002] In the field of modern industrial transmission, synchronous belt drives are widely used in various mechanical equipment, such as machine tools, automated production lines, and conveying equipment, due to their advantages such as smooth transmission, low noise, and accurate transmission ratio. However, during long-term use, the synchronous belt will inevitably experience wear and stretching due to continuous tension, friction, and the aging of its own materials, leading to the gradual loosening of the synchronous belt.

[0003] Slack in the timing belt can have many adverse effects. First, it can lead to a significant decrease in transmission accuracy, making it impossible for parameters such as the operating speed and displacement of the equipment to accurately meet the expected requirements, which seriously affects the working performance and processing quality of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide an automatic tensioning mechanism for synchronous belt pulleys, which aims to solve the technical problem that the slack of synchronous belts in the prior art will cause many adverse effects, such as a significant decrease in transmission accuracy, making it impossible for the operating speed, displacement and other parameters of the equipment to accurately meet the expected requirements, and seriously affecting the working performance and processing quality of the equipment.

[0005] To achieve the above objectives, the present invention provides an automatic tensioning mechanism for a synchronous belt pulley assembly, comprising a base plate, a synchronous pulley assembly, an adjustment assembly, and a drive assembly. The synchronous pulley assembly is connected to the base plate, the adjustment assembly is disposed on the base plate and connected to the drive assembly, and the drive assembly is connected to the base plate.

[0006] The synchronous pulley assembly includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The first synchronous pulley and the second synchronous pulley are rotatably connected to the base plate, and the synchronous belt is respectively wound around the first synchronous pulley and the second synchronous pulley.

[0007] The adjustment assembly includes an adjustment groove, an adjustment plate, and an adjustment roller. The adjustment groove is disposed on the base plate, the adjustment plate is movably disposed on the base plate and disposed on one side of the adjustment groove, and the adjustment roller is rotatably connected to the adjustment plate and press-fits with the timing belt.

[0008] The driving assembly includes a driving cylinder and a driving block. The driving cylinder is connected to the base plate and the driving block respectively. The driving block is disposed in the adjustment groove and is connected to the driving cylinder and the adjustment plate respectively.

[0009] As an optional embodiment of this utility model, the first synchronous pulley and the second synchronous pulley are arranged in parallel and spaced apart, and the adjusting roller is arranged between the first synchronous pulley and the second synchronous pulley.

[0010] As an optional solution of this utility model, the substrate is provided with a mounting groove, and the adjusting plate is movably disposed in the mounting groove.

[0011] As an optional embodiment of this utility model, one end of the adjusting roller is rotatably connected to the adjusting plate, and the other end extends out of the synchronous belt, wherein the length of the adjusting roller is greater than the width of the synchronous belt.

[0012] As an optional embodiment of this utility model, the driving cylinder includes a driving cylinder body and a driving piston rod. The driving cylinder body is fixedly connected to the base plate, and one end of the driving piston rod is movably connected to the driving cylinder body, while the other end is fixedly connected to the driving block.

[0013] As an optional solution of this utility model, the drive block is arranged in an L-shape.

[0014] The above-mentioned technical solutions in the automatic tensioning mechanism for synchronous belt pulleys provided in this embodiment of the utility model have at least one of the following technical effects:

[0015] The automatic tensioning mechanism for synchronous belt pulleys provided in this application can automatically adjust the tension according to the slack of the synchronous belt through a drive cylinder, realizing real-time dynamic adjustment of the tension and ensuring the tension of the synchronous belt. This effectively improves the transmission accuracy, makes the equipment operation more stable and reliable, and avoids the problem of poor equipment performance caused by a decrease in transmission accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A perspective view of the automatic tensioning mechanism for the synchronous belt pulley assembly provided in an embodiment of this utility model.

[0018] Figure 2 A perspective view of the automatic tensioning mechanism for the synchronous belt pulley assembly provided in an embodiment of this utility model.

[0019] Figure 3 A perspective view of the automatic tensioning mechanism for the synchronous belt pulley assembly provided in an embodiment of this utility model.

[0020] Figure 4 for Figure 3 A magnified view of part A in the image.

[0021] The following are the labeling elements in the figure:

[0022] 1. Base plate; 2. Synchronous pulley assembly; 3. Adjustment assembly; 4. Drive assembly;

[0023] 11. Mounting slot;

[0024] 21. First synchronous pulley; 22. Second synchronous pulley; 23. Synchronous belt;

[0025] 31. Adjusting groove; 32. Adjusting plate; 33. Adjusting roller;

[0026] 41. Drive cylinder; 42. Drive block;

[0027] 411. Drive cylinder; 412. Drive piston rod. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0032] In one embodiment of this utility model, such as Figures 1-4 As shown, an automatic tensioning mechanism for a synchronous belt pulley assembly is provided, including a base plate 1, a synchronous pulley assembly 2, an adjusting assembly 3, and a driving assembly 4. The synchronous pulley assembly 2 is connected to the base plate 1, the adjusting assembly 3 is disposed on the base plate 1 and connected to the driving assembly 4, and the driving assembly 4 is connected to the base plate 1.

[0033] The timing pulley assembly 2 includes a first timing pulley 21, a second timing pulley 22, and a timing belt 23. The first timing pulley 21 and the second timing pulley 22 are rotatably connected to the base plate 1, and the timing belt 23 is wound around the first timing pulley 21 and the second timing pulley 22 respectively.

[0034] The adjusting assembly 3 includes an adjusting groove 31, an adjusting plate 32, and an adjusting roller 33. The adjusting groove 31 is disposed on the base plate 1, and the adjusting plate 32 is movably disposed on the base plate 1 and disposed on one side of the adjusting groove 31. The adjusting roller 33 is rotatably connected to the adjusting plate 32 and is in pressure contact with the timing belt 23.

[0035] The drive assembly 4 includes a drive cylinder 41 and a drive block 42. The drive cylinder 41 is fixedly connected to the base plate 1 and the drive block 42 respectively. The drive block 42 is disposed in the adjustment groove 31 and is fixedly connected to the drive cylinder 41 and the adjustment plate 32 respectively.

[0036] The automatic tensioning mechanism for the synchronous belt pulley assembly provided in this application can automatically adjust the tension according to the slack of the synchronous belt 23 through the drive cylinder 41, realize the real-time dynamic adjustment of the tension, ensure the tension of the synchronous belt 23, thereby effectively improving the transmission accuracy, making the equipment operation more stable and reliable, and avoiding the problem of poor equipment performance caused by the decrease in transmission accuracy.

[0037] In another embodiment of this utility model, the first synchronous pulley 21 and the second synchronous pulley 22 are arranged parallel to each other and spaced apart, and the adjusting roller 33 is disposed between the first synchronous pulley 21 and the second synchronous pulley 22. This ensures that the axes of the first synchronous pulley 21 and the second synchronous pulley 22 are parallel to each other, thereby ensuring the normal transmission of the synchronous belt 23. The synchronous belt 23 is wound around the first synchronous pulley 21 and the second synchronous pulley 22 respectively to form a transmission circuit.

[0038] In another embodiment of the present invention, a mounting groove 11 is provided on the substrate 1, and an adjustment plate 32 is movably disposed in the mounting groove 11.

[0039] In another embodiment of this utility model, one end of the adjusting roller 33 is rotatably connected to the adjusting plate 32, and the other end extends out of the synchronous belt 23. The length of the adjusting roller 33 is greater than the width of the synchronous belt 23. One end of the adjusting roller 33 is connected to the adjusting plate 32 via a rotating shaft, allowing it to rotate freely. The other end extends out of the synchronous belt 23, and the length of the adjusting roller 33 is greater than the width of the synchronous belt 23 to ensure that the adjusting roller 33 can completely cover the width direction of the synchronous belt 23, thereby uniformly applying tension to the synchronous belt 23. The adjusting roller 33 is in press-fit contact with the synchronous belt 23. When the adjusting plate 32 moves, the adjusting roller 33 moves accordingly, thereby generating a squeezing effect on the synchronous belt 23 and realizing the adjustment of tension.

[0040] In another embodiment of this utility model, the drive cylinder 41 includes a drive cylinder body 411 and a drive piston rod 412. The drive cylinder body 411 is fixedly connected to the base plate 1, and one end of the drive piston rod 412 is movably connected to the drive cylinder body 411, while the other end is fixedly connected to the drive block 42. When the drive cylinder 41 is working, the drive piston rod 412 extends or retracts, causing the drive block 42 to move within the adjusting groove 31. Since the drive block 42 is connected to the adjusting plate 32, it further causes the adjusting plate 32 to move within the mounting groove 11, thereby causing the adjusting roller 33 to tension or relax the synchronous belt 23.

[0041] In another embodiment of this utility model, the drive block 42 is arranged in an L-shape.

[0042] The automatic tensioning mechanism for synchronous belt pulleys provided in this application operates as follows:

[0043] When the timing belt 23 becomes slack during use, it needs to be tensioned. At this time, the drive cylinder 411 of the drive cylinder 41 provides power to the drive piston rod 412, causing the drive piston rod 412 to extend and drive the drive block 42 to move within the adjusting groove 31. Since the drive block 42 is connected to the adjusting plate 32, the adjusting plate 32 moves towards the timing belt 23 within the mounting groove 11 under the drive of the drive block 42. This causes the adjusting roller 33 to apply greater pressure to the timing belt 23, increasing the tension of the timing belt 23 and eliminating the slack. When the tension of the timing belt 23 is appropriate, the drive cylinder 41 stops operating, maintaining the current tension. Conversely, when it is necessary to loosen the timing belt 23, the drive cylinder 41 drives the piston rod 412 to retract, causing the drive block 42 and the adjusting plate 32 to move away from the timing belt 23. The pressure of the adjusting roller 33 on the timing belt 23 decreases, and the tension of the timing belt 23 decreases accordingly.

[0044] The automatic tensioning mechanism for the synchronous belt pulley assembly provided in this application can automatically adjust the tension according to the slack of the synchronous belt 23 through the drive cylinder 41, realize the real-time dynamic adjustment of the tension, ensure the tension of the synchronous belt 23, thereby effectively improving the transmission accuracy, making the equipment operation more stable and reliable, and avoiding the problem of poor equipment performance caused by the decrease in transmission accuracy.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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. An automatic tensioning mechanism for a synchronous belt pulley assembly, characterized in that, It includes a base plate, a timing wheel assembly, an adjustment assembly, and a drive assembly. The timing wheel assembly is connected to the base plate. The adjustment assembly is disposed on the base plate and connected to the drive assembly. The drive assembly is connected to the base plate. The synchronous pulley assembly includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The first synchronous pulley and the second synchronous pulley are rotatably connected to the base plate, and the synchronous belt is respectively wound around the first synchronous pulley and the second synchronous pulley. The adjustment assembly includes an adjustment groove, an adjustment plate, and an adjustment roller. The adjustment groove is disposed on the base plate, the adjustment plate is movably disposed on the base plate and disposed on one side of the adjustment groove, and the adjustment roller is rotatably connected to the adjustment plate and press-fits with the timing belt. The driving assembly includes a driving cylinder and a driving block. The driving cylinder is connected to the base plate and the driving block respectively. The driving block is disposed in the adjustment groove and is connected to the driving cylinder and the adjustment plate respectively.

2. The automatic tensioning mechanism for a synchronous belt pulley group according to claim 1, characterized in that, The first and second synchronous pulleys are arranged in parallel and spaced apart, and the adjusting roller is arranged between the first and second synchronous pulleys.

3. The automatic tensioning mechanism for a synchronous belt pulley group according to claim 1, characterized in that, The substrate is provided with a mounting groove, and the adjustment plate is movably disposed in the mounting groove.

4. The automatic tensioning mechanism for a synchronous belt pulley group according to claim 1, characterized in that, One end of the adjusting roller is rotatably connected to the adjusting plate, and the other end extends out of the synchronous belt. The length of the adjusting roller is greater than the width of the synchronous belt.

5. The automatic tensioning mechanism for a synchronous belt pulley group according to claim 1, characterized in that, The driving cylinder includes a driving cylinder body and a driving piston rod. The driving cylinder body is fixedly connected to the base plate, and one end of the driving piston rod is movably connected to the driving cylinder body, while the other end is fixedly connected to the driving block.

6. The automatic tensioning mechanism for a synchronous belt pulley group according to claim 1, characterized in that, The drive block is arranged in an L-shape.

Images