An adaptive tensioning device for high-speed synchronous belt drives

Abstract

This utility model relates to an adaptive tensioning device for high-speed synchronous belt drives, comprising a fixed plate, a synchronous belt mounted on the fixed plate, a first pressure plate pressing one end of the synchronous belt, a second pressure plate pressing the other end of the synchronous belt, a limiting rod restricting the position of the first pressure plate, a first nut restricting the position of the limiting rod, a sleeve guiding the second pressure plate, and an elastic element that rebounds the second pressure plate; the fixed plate has a first plate; the limiting rod passes through the first plate; two sets of first nuts are provided relative to the first plate, and both sets of first nuts press against the side wall of the first plate; the limiting rod restricts the first pressure plate to always be located on one end face of the limiting rod; the sleeve is mounted on the limiting rod; rotating the second nut causes the elastic element to compress or open. This invention solves the problems of traditional tensioning devices, such as difficulty in self-adaptation, poor buffering, unreasonable structure, and cumbersome adjustment.

Description

Technical Field

[0001] This utility model relates to the field of synchronous belt tensioning, and in particular to an adaptive tensioning device for high-speed synchronous belt drives. Background Technology

[0002] In existing technologies, high-speed synchronous belt drives are widely used in automated production lines, precision machine tools, and logistics transportation due to their high transmission efficiency and precise transmission ratio. The tensioning device, as a key component of the synchronous belt drive system, directly affects the transmission stability, service life, and overall operating accuracy of the equipment.

[0003] Currently, traditional synchronous belt tensioning devices have many shortcomings. Regarding tension adjustment, most devices employ a fixed structure or manual adjustment method, failing to adaptively adjust to the tensile deformation of the synchronous belt during high-speed operation. When the synchronous belt becomes loose due to long-term use, or experiences instantaneous stretching due to inertia during high-speed motion, traditional devices struggle to respond quickly and compensate for the tension, leading to slippage between the synchronous belt and the pulleys. This affects transmission accuracy and can even cause problems such as increased equipment vibration and noise.

[0004] In terms of buffering performance, existing tensioning devices lack effective buffering structures. When the synchronous belt starts, brakes, or experiences sudden load changes at high speeds, it generates a large inertial force. This impact force acts directly on the tensioning device and the synchronous belt, easily causing wear and breakage of the synchronous belt teeth, or loosening and damage to the tensioning device components. This shortens the service life of the synchronous belt and device, and increases equipment maintenance costs and downtime.

[0005] Furthermore, the structural design of traditional tensioning devices is not reasonable enough. Some devices use a single method to press the synchronous belt, which makes it difficult to ensure that the synchronous belt does not shift during high-speed transmission, affecting the smoothness of the transmission. Other devices have cumbersome adjustment components with low adjustment precision, making it impossible to accurately control the tension of the synchronous belt and adapt to the transmission requirements under different working conditions. Utility Model Content

[0006] This application provides an adaptive tensioning device for high-speed synchronous belt drives, which solves the problems of traditional tensioning devices in the prior art, such as difficulty in self-adaptation, poor buffering, unreasonable structure, and cumbersome adjustment.

[0007] The technical solutions adopted in the embodiments of this application are as follows.

[0008] An adaptive tensioning device for high-speed synchronous belt drives includes a fixed plate, a synchronous belt disposed on the fixed plate, a first pressure plate pressing one end of the synchronous belt, a second pressure plate pressing the other end of the synchronous belt, a limiting rod restricting the position of the first pressure plate, a first nut restricting the position of the limiting rod, a sleeve guiding the second pressure plate, and an elastic element that rebounds the second pressure plate. The fixed plate has a first plate; the limiting rod passes through the first plate; two sets of the first nuts are disposed relative to the first plate, and both sets of the first nuts press against the side wall of the first plate; the limiting rod restricts the first pressure plate to always be located on one end face of the limiting rod; the sleeve is disposed on the limiting rod; the sleeve passes through the second pressure plate; the second pressure plate can slide along the sleeve; the end of the limiting rod away from the first pressure plate is threadedly connected to the second nut; one end of the elastic element abuts against the second pressure plate, and the other end of the elastic element abuts against the second nut; rotating the second nut causes the elastic element to compress or expand.

[0009] As a further improvement to the above technical solution:

[0010] The first pressure plate and the second pressure plate are L-shaped.

[0011] Both the first pressure plate and the second pressure plate are provided with fastening plates that restrict the end face of the synchronous belt.

[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0013] 1. By adjusting the preload and dynamic response of the elastic element (spring), adaptive compensation of the synchronous belt tension is achieved. When the synchronous belt becomes loose due to long-term use or experiences momentary stretching during high-speed operation, the elastic element can adjust the tension in real time through compression or rebound, avoiding the slippage problem of traditional fixed structures. Rotating the second nut allows for precise setting of the elastic element's preload, adapting to tension requirements under different working conditions, ensuring that the synchronous belt and pulley are always tightly engaged, reducing transmission errors, vibration, and noise, and improving the stability of high-speed transmission.

[0014] 2. During high-speed starts, braking, or sudden load changes, the elastic element can absorb the tensile deformation of the timing belt caused by inertial forces through compression deformation, thus buffering the impact force. This design avoids the impact force acting directly on the timing belt teeth and tensioning device components, reducing the risk of timing belt wear and breakage, and lowering the probability of device loosening or damage. Compared with traditional unbuffered structures, it can extend the service life of the timing belt and device by more than 30%, reducing maintenance costs and downtime.

[0015] 3. The L-shaped pressure plate, in conjunction with the fastening plate, constrains the synchronous belt from both sides and end faces, preventing belt misalignment during high-speed transmission and ensuring smooth transmission. The guiding structure of the limit rod and sleeve ensures smooth sliding of the second pressure plate. Adjustment only requires rotating the second nut to change the tension of the elastic element, making operation simple and adjustment highly accurate. Double sets of first nuts fix the position of the limit rod, stably locking the first pressure plate and adapting to the installation requirements of synchronous belts of different lengths, improving the versatility of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the adaptive tensioning device for high-speed synchronous belt drive in this utility model.

[0017] Figure 2 This is a top view of the adaptive tensioning device for high-speed synchronous belt drive in this utility model.

[0018] In the diagram: 1. Fixed plate; 2. Synchronous belt; 3. First pressure plate; 4. Second pressure plate; 5. Limiting rod; 6. First nut; 7. Sleeve; 8. Elastic element; 9. First plate; 10. Second nut; 11. Fastening plate. Detailed Implementation

[0019] This application provides an adaptive tensioning device for high-speed synchronous belt drives, which solves the problems of traditional tensioning devices in the prior art, such as difficulty in self-adaptation, poor buffering, unreasonable structure, and cumbersome adjustment.

[0020] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows:

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] An adaptive tensioning device for high-speed synchronous belt drives includes a fixed plate 1, a synchronous belt 2 disposed on the fixed plate 1, a first pressure plate 3 pressing one end of the synchronous belt 2, a second pressure plate 4 pressing the other end of the synchronous belt 2, a limiting rod 5 restricting the position of the first pressure plate 3, a first nut 6 restricting the position of the limiting rod 5, a sleeve 7 guiding the second pressure plate 4, and an elastic element 8 rebounding the second pressure plate 4; a first plate 9 is disposed on the fixed plate 1; the limiting rod 5 passes through the first plate 9; and the first nut 6 is positioned relative to the first plate 9. Two sets of first nuts 6 are provided, and both sets of first nuts 6 press against the side wall of the first plate 9; the limiting rod 5 restricts the first pressure plate 3 to always be located on one side end face of the limiting rod 5; the sleeve 7 is provided on the limiting rod 5; the sleeve 7 passes through the second pressure plate 4; the second pressure plate 4 can slide along the sleeve 7; the end of the limiting rod 5 away from the first pressure plate 3 is threadedly connected to the second nut 10; one end of the elastic element 8 abuts against the second pressure plate 4, and the other end of the elastic element 8 abuts against the second nut 10; rotating the second nut 10 causes the elastic element 8 to compress or open.

[0023] The first pressure plate 3 and the second pressure plate 4 are L-shaped.

[0024] Both the first pressure plate 3 and the second pressure plate 4 are provided with fastening plates 11 that restrict the end face of the synchronous belt 2.

[0025] The elastic element 8 (spring) achieves adaptive compensation of the tension of the synchronous belt 2 through preload adjustment and dynamic response. When the synchronous belt 2 becomes loose due to long-term use or experiences instantaneous stretching during high-speed operation, the elastic element 8 can adjust the tension in real time through compression or rebound, avoiding the slippage problem of traditional fixed structures. Rotating the second nut 10 allows for precise setting of the preload of the elastic element 8, adapting to the tension requirements under different working conditions, ensuring that the synchronous belt 2 and the pulley are always tightly engaged, reducing transmission errors, vibration, and noise, and improving the stability of high-speed transmission. During high-speed start-up, braking, or sudden load changes, the elastic element 8 can absorb the tensile deformation of the synchronous belt 2 caused by inertial forces through compression deformation, buffering the impact force. This design avoids the impact force acting directly on the teeth of the synchronous belt 2 and the tensioning device components, reducing the risk of wear and breakage of the synchronous belt 2, and lowering the probability of device loosening or damage. Compared with traditional unbuffered structures, it can extend the service life of the synchronous belt 2 and the device by more than 30%, reducing maintenance costs and downtime. The L-shaped pressure plate, together with the fastening plate 11, constrains the synchronous belt 2 from both sides and the end face, preventing the synchronous belt 2 from shifting during high-speed transmission and ensuring smooth transmission. The guiding structure of the limiting rod 5 and the sleeve 7 ensures smooth sliding of the second pressure plate 4. During adjustment, only the second nut 10 needs to be rotated to change the tension of the elastic element 8, making operation simple and adjustment highly accurate. The double set of first nuts 6 fixes the position of the limiting rod 5, which can stably lock the first pressure plate 3, adapting to the installation requirements of synchronous belts 2 of different lengths and improving the versatility of the device.

[0026] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An adaptive tensioning device for high-speed synchronous belt drives, characterized in that, The system includes a fixed plate (1), a timing belt (2) mounted on the fixed plate (1), a first pressure plate (3) pressing one end of the timing belt (2), a second pressure plate (4) pressing the other end of the timing belt (2), a limiting rod (5) restricting the position of the first pressure plate (3), a first nut (6) restricting the position of the limiting rod (5), a sleeve (7) guiding the second pressure plate (4), and an elastic element (8) for rebounding the second pressure plate (4); a first plate (9) is mounted on the fixed plate (1); the limiting rod (5) passes through the first plate (9); and two sets of the first nuts (6) are provided relative to the first plate (9). The sidewalls of the first plate (9) are pressed together; the limiting rod (5) restricts the first pressure plate (3) to always be located on one side end face of the limiting rod (5); the sleeve (7) is disposed on the limiting rod (5); the sleeve (7) passes through the second pressure plate (4); the second pressure plate (4) can slide along the sleeve (7); the end of the limiting rod (5) away from the first pressure plate (3) is threaded with a second nut (10); one end of the elastic element (8) abuts against the second pressure plate (4), and the other end of the elastic element (8) abuts against the second nut (10); rotating the second nut (10) causes the elastic element (8) to compress or open.

2. The adaptive tensioning device for high-speed synchronous belt drive as described in claim 1, characterized in that, The first pressure plate (3) and the second pressure plate (4) are L-shaped.

3. The adaptive tensioning device for high-speed synchronous belt drive as described in claim 2, characterized in that, Both the first pressure plate (3) and the second pressure plate (4) are provided with fastening plates (11) that restrict the end face of the synchronous belt (2).

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