A synchronous belt fatigue testing device

Abstract

The utility model discloses a synchronous belt fatigue testing arrangement relates to synchronous belt detection device field. Including the drive assembly of being located on the frame, the drive assembly is around and is located synchronous belt, the drive assembly drives the synchronous belt reciprocating movement, its characterized in that: the frame is equipped with the down pressure subassembly, the down pressure subassembly is placed the top of synchronous belt positive face, the frame still is equipped with the tensioning assembly, the tensioning assembly pushes the back of the synchronous belt of measurement, the drive assembly, the down pressure subassembly and the tensioning assembly top respectively are equipped with pressure sensor. The application has the advantages that the test result is more close to the actual working condition of synchronous belt, and the test result is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of synchronous belt testing devices, and in particular to a synchronous belt fatigue testing device. Background Technology

[0002] Synchronous belts exhibit fatigue after prolonged use. Specifically, the belt lengthens over time, affecting its normal operation. Generally, before shipment, synchronous belts are sampled and subjected to extended use to determine their actual lifespan. This testing, usually conducted before delivery, often involves unloaded testing or simulation using counterweights to obtain fatigue values ​​under certain loading conditions. These values ​​differ significantly from actual working conditions and should only be used as a reference, lacking precision. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a synchronous belt fatigue testing device.

[0004] This utility model is achieved using the following technical solution: a synchronous belt fatigue testing device, including a drive assembly mounted on a frame, a synchronous belt to be tested wound around the drive assembly, the drive assembly driving the synchronous belt to reciprocate, a pressing assembly mounted on the frame, the pressing assembly being positioned above the front of the synchronous belt, a tensioning assembly mounted on the frame, the tensioning assembly pushing against the back of the synchronous belt to be tested, and pressure sensors respectively mounted on the drive assembly, the pressing assembly, and the tensioning assembly.

[0005] The drive assembly includes a drive wheel and a driven wheel. The drive wheel is rotatably connected to the frame and located at one end of the frame. The driven wheel is rotatably connected to the other end of the frame. The timing belt to be tested is wound between the drive wheel and the driven wheel. The pressing assembly is fixed above the timing belt and located between the drive wheel and the driven wheel. The pressing assembly abuts against the timing belt between the drive wheel and the driven wheel. The tensioning assembly is fixed on the frame and located below the timing belt. The tensioning assembly extends upward and abuts against the lower part of the timing belt. The pressure sensor is located on the drive wheel or the driven wheel.

[0006] The pressing assembly includes a pressing linear drive device and a pressing roller. The pressing linear drive device is fixed on the frame, and the pressing roller is rotatably connected to a support frame. The support frame is fixed on the drive shaft of the pressing linear drive device. The pressure sensors are located on the pressing roller and are evenly distributed on the surface of the pressing roller. When the pressing roller abuts against the surface of the synchronous belt to be tested, the synchronous belt to be tested abuts against the pressure sensors on the surface of the pressing roller.

[0007] The tensioning assembly includes a tensioning roller and a tensioning linear drive device. A mounting bracket is fixed on the drive shaft of the tensioning linear drive device, and the tensioning roller is rotatably connected to the mounting bracket. A pressure sensor is provided on the surface of the tensioning roller.

[0008] The pressure sensor is connected to the processing unit via a signal line, and the processing unit is fixed on the frame.

[0009] The sensors are located on the driven wheel and are evenly distributed on the surface of the driven wheel.

[0010] Compared to existing technologies, this invention uses a pressing component that remains pressed firmly against the surface of the timing belt during actual testing. This simulates the varying pressures experienced by the timing belt at different rotational speeds, or the different tensions of the timing belt under different operating conditions. This allows for fatigue testing that closely approximates the actual operating conditions of the timing belt, resulting in more accurate test results.

[0011] In this application, the tensioning component simulates the additional force caused by load or other operating conditions, thus further approximating the actual operating conditions of the timing belt. During testing, if the pressure sensor reading between the timing belt and the tensioning component decreases, the timing belt exhibits fatigue. This fatigue can be corrected by adjusting the tensioning component to restore the pressure sensor reading to normal. This demonstrates that even if the timing belt experiences fatigue and deterioration, it can still be remedied by the tensioning component. When the tensioning component reaches its maximum stroke and the pressure sensor reading between the timing belt and the tensioning component remains abnormal, the timing belt exhibits maximum fatigue, and should be replaced. This allows for the determination of the actual fatigue level and replacement time of the timing belt under these operating conditions. This makes the test results more closely reflect the actual operating conditions of the timing belt, resulting in more accurate test results. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the synchronous belt fatigue testing device in this utility model;

[0013] In the diagram: 1. Drive assembly; 11. Drive wheel; 12. Driven wheel; 2. Synchronous belt under test; 3. Pressing assembly; 31. Pressing linear drive device; 32. Pressing roller; 33. Support frame; 4. Tensioning assembly; 41. Tensioning linear drive device; 42. Tensioning roller; 43. Mounting frame; 5. Pressure sensor; 6. Frame; 7. Processing unit. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0015] Reference Figure 1 A fatigue testing device for synchronous belts includes a drive assembly 1 mounted on a frame 6. A synchronous belt 2 to be tested is wound around the drive assembly 1, causing the synchronous belt to reciprocate. A pressing assembly 3 is mounted on the frame 6, positioned above the front of the synchronous belt. A tensioning assembly 4 is also mounted on the frame 6, pushing against the back of the synchronous belt 2. Pressure sensors 5 are respectively mounted on the drive assembly 1, the pressing assembly 3, and the tensioning assembly 4. During testing, the pressure sensors 5 monitor the pressure in real time to simulate the daily load conditions of the synchronous belt. In actual testing, the pressing assembly 3 continuously presses down against the surface of the synchronous belt to simulate the different pressures experienced by the synchronous belt at different rotational speeds, or the different tensions of the synchronous belt under different working conditions. This device closely replicates the actual working conditions of the synchronous belt during fatigue testing, resulting in more accurate test results.

[0016] In this embodiment, the drive assembly 1 includes a drive wheel 11 and a driven wheel 12. The drive wheel 11 is rotatably connected to the frame 6 and located at one end of the frame 6, while the driven wheel 12 is rotatably connected to the other end of the frame 6. The timing belt 2 to be tested is wound between the drive wheel 11 and the driven wheel 12. The pressing assembly 3 is fixed above the timing belt and located between the drive wheel 11 and the driven wheel 12, pressing against the timing belt between the drive wheel 11 and the driven wheel 12. The tensioning assembly 4 is fixed to the frame 6 and located below the timing belt, extending upwards and pressing against the lower part of the timing belt. A pressure sensor 5 is located on either the drive wheel 11 or the driven wheel 12. Preferably, in this embodiment, the pressure sensor 5 is located on the driven wheel 12 and evenly distributed on its surface. Pressure data is collected using the pressure sensor 5, and the tension of the timing belt is fed back from the pressure data. At this point, the additional force caused by the load or other working conditions is simulated by the pressure-lowering component 3, further approximating the actual working conditions of the timing belt. If the reading of the pressure sensor 5 between the timing belt and the pressure-lowering component 3 decreases during the test, then the timing belt is showing signs of fatigue. This can be corrected by adjusting the tensioning component 4 to restore the reading of the pressure sensor 5 to normal. This demonstrates that even if the timing belt exhibits fatigue and deterioration, it can still be remedied by the tensioning component 4. When the tensioning component 4 reaches its maximum stroke and the reading of the pressure sensor 5 between the timing belt and the pressure-lowering component 3 remains abnormal, it indicates that the timing belt is at its most fatigued, and it should be replaced. This allows for the determination of the actual fatigue level and replacement time of the timing belt under these working conditions, making the test more accurate.

[0017] The pressing assembly 3 includes a pressing linear drive device 31 and a pressing roller 32. The pressing linear drive device 31 is fixed on the frame 6, and the pressing roller 32 is rotatably connected to a support frame 33. The support frame 33 is fixed on the drive shaft of the pressing linear drive device 31. Pressure sensors 5 are located on the pressing roller 32 and are evenly distributed on its surface. When the pressing roller 32 abuts against the surface of the synchronous belt 2 to be tested, the synchronous belt 2 to be tested presses against the pressure sensors 5 on the surface of the pressing roller 32. Similarly, the tensioning assembly 4 includes a tensioning roller 42 and a tensioning linear drive device 41. A mounting frame 43 is fixed on the drive shaft of the tensioning linear drive device 41, and the tensioning roller 42 is rotatably connected to the mounting frame 43. Pressure sensors 5 are provided on the surface of the tensioning roller 42. The tensioning linear drive device 41 drives the mounting frame 43 to move, thereby causing the tensioning roller 42 to press against the synchronous belt 2 to be tested. Thus, both the downward linear drive roller device and the tensioning linear drive device 41 can be implemented using electric or hydraulic cylinders. Furthermore, the electric or hydraulic cylinders can be automatically controlled in the same way as the pressure sensor 5, enabling rapid adjustment of working conditions and improving testing efficiency.

[0018] In this embodiment, the pressure sensor 5 is connected to the processing unit 7 via a signal line, and the processing unit 7 is fixed on the frame 6. The processing unit 7 can be a microcontroller or an industrial control computer commonly used in production lines. It connects to each group of pressure sensors 5 via signal lines and also connects to the pressing linear drive device 31 and the tensioning linear drive device 41 via signal lines, so as to control the stroke of the pressing linear drive device 31 and the tensioning linear drive device 41, thereby quickly adjusting the working conditions and improving testing efficiency.

[0019] Compared to existing technologies, this invention uses a pressing component 3 that is constantly pressed against the surface of the synchronous belt during actual testing. This simulates the different pressures experienced by the synchronous belt at different rotational speeds, or the different tensions of the synchronous belt under different operating conditions. This allows for fatigue testing that closely approximates the actual operating conditions of the synchronous belt, resulting in more accurate test results.

[0020] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A fatigue testing device for a synchronous belt, comprising a drive assembly mounted on a frame, wherein a synchronous belt to be tested is wound around the drive assembly, and the drive assembly drives the synchronous belt to reciprocate, characterized in that: The frame is equipped with a pressing component, which is positioned above the front of the synchronous belt. The frame is also equipped with a tensioning component, which pushes against the back of the synchronous belt under test. Pressure sensors are respectively provided on the drive component, the pressing component, and the tensioning component.

2. The synchronous belt fatigue testing device according to claim 1, characterized in that: The drive assembly includes a drive wheel and a driven wheel. The drive wheel is rotatably connected to the frame and located at one end of the frame. The driven wheel is rotatably connected to the other end of the frame. The timing belt to be tested is wound between the drive wheel and the driven wheel. The pressing assembly is fixed above the timing belt and located between the drive wheel and the driven wheel. The pressing assembly abuts against the timing belt between the drive wheel and the driven wheel. The tensioning assembly is fixed on the frame and located below the timing belt. The tensioning assembly extends upward and abuts against the lower part of the timing belt. The pressure sensor is located on the drive wheel or the driven wheel.

3. The synchronous belt fatigue testing device according to claim 2, characterized in that: The pressing assembly includes a pressing linear drive device and a pressing roller. The pressing linear drive device is fixed on the frame, and the pressing roller is rotatably connected to a support frame. The support frame is fixed on the drive shaft of the pressing linear drive device. The pressure sensors are located on the pressing roller and are evenly distributed on the surface of the pressing roller. When the pressing roller abuts against the surface of the synchronous belt to be tested, the synchronous belt to be tested abuts against the pressure sensors on the surface of the pressing roller.

4. The synchronous belt fatigue testing device according to claim 2, characterized in that: The tensioning assembly includes a tensioning roller and a tensioning linear drive device. A mounting bracket is fixed on the drive shaft of the tensioning linear drive device, and the tensioning roller is rotatably connected to the mounting bracket. A pressure sensor is provided on the surface of the tensioning roller.

5. A synchronous belt fatigue testing device according to claim 2, 3 or 4, characterized in that: The pressure sensor is connected to the processing unit via a signal line, and the processing unit is fixed on the frame.

6. The synchronous belt fatigue testing device according to claim 2, characterized in that: The sensors are located on the driven wheel and are evenly distributed on the surface of the driven wheel.

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