A tensioning method and a tensioning system that automatically adjust according to load changes

Abstract

The application provides a tensioning method and system automatically adjusted according to load changes. The tensioning method automatically adjusted according to load changes comprises the following steps: S1, obtaining a passive shaft torque value; S2, calculating a first tensioning force value matched with the passive shaft torque value according to the passive shaft torque value; and S3, adjusting the position of a tensioning mechanism according to the first tensioning force value. The application has the beneficial effect that the passive shaft torque is detected, a transmission load signal is transmitted to a controller, the required pressure control is output by the controller, and the tensioning mechanism is adjusted, so that the tension of the transmission component changes with the change of the load, the tensioning force applied to the transmission component also changes in real time, the problem of too small or too large tensioning force value is avoided, the transmission component is prevented from slipping, and the situation of insufficient transmission power, early wear, excessive wear and fracture failure is prevented.

Description

Technical Field

[0001] This invention relates to the field of transmission equipment technology, and in particular to a tensioning method and tensioning system that automatically adjusts according to load changes. Background Technology

[0002] Most existing belt tensioning methods are fixed tensioning, elastic tensioning, and constant tension tensioning. All of these methods apply a constant tension force to the belt. Theoretically, the belt tension changes with the load, so the tension force applied to the belt should also change in real time. Currently, constant tension tensioning devices have the problem of setting the tension force value too small or too large, which leads to belt slippage, insufficient power transmission, premature wear, excessive wear, and breakage. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a tensioning method and tensioning system that automatically adjusts according to load changes.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a tensioning method that automatically adjusts according to load changes, comprising:

[0005] S1. Obtain the passive shaft torque value;

[0006] S2. Calculate the first tension force value that matches the passive shaft torque value based on the passive shaft torque value;

[0007] S3. Adjust the position of the tensioning mechanism according to the first tension value.

[0008] The beneficial effects of adopting the technical solution of the present invention are as follows: by detecting the torque of the passive shaft, the load signal is transmitted to the controller, and the controller outputs the required pressure control and adjusts the tensioning mechanism, so that the tension of the transmission component changes with the load, and the tension applied to the transmission component also changes in real time, avoiding the problem of the tension value being too small or too large, preventing the transmission component from slipping, and preventing insufficient power transmission, premature wear, excessive wear and breakage failure.

[0009] Further, step 2 includes:

[0010] S21. Determine whether the value of the passive shaft torque has changed;

[0011] When the passive shaft torque value changes, the time of the passive shaft torque value change and a preset time are obtained;

[0012] S22. Determine whether the time for the change in the passive shaft torque value is less than the preset time;

[0013] When the time for the change in the passive shaft torque value is greater than or equal to the preset time, a first tension value that matches the passive shaft torque value is calculated based on the passive shaft torque value.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are as follows: When the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal remains unchanged, fully considering the situations of start-up and occasional load fluctuations, thus improving stability and reliability. When the time is greater than or equal to the preset time, the controller promptly matches the tension value to the final load value based on the final load change, and adjusts the position of the tensioning mechanism according to the tension value, improving the timeliness and accuracy of tensioning.

[0015] Further, step S22 includes: when the time for the change in the passive shaft torque value is less than the preset time, returning to step S1.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are: when the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal does not change, fully considering the start-up and occasional load fluctuations, thus improving stability and reliability.

[0017] Furthermore, the preset time is 2 seconds.

[0018] The beneficial effects of adopting the above-mentioned further technical solution are: when the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal does not change, fully considering the start-up and occasional load fluctuations, thus improving stability and reliability.

[0019] Further, step S3 includes:

[0020] S31. Obtain the speed of the active shaft, the speed of the passive shaft, the preset slippage rate, and the actual position of the tensioning mechanism;

[0021] S32. Calculate the actual slippage rate based on the speed of the drive shaft and the speed of the driven shaft;

[0022] S33. Determine whether the actual slip rate is greater than or equal to the preset slip rate;

[0023] When the actual slip rate is less than the preset slip rate, the position of the tensioning mechanism is adjusted according to the first tension value.

[0024] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the active shaft speed sensor and the passive shaft speed sensor detect the active shaft speed and the passive shaft speed respectively. When the slippage rate is ≥5%, the controller automatically adjusts the pressure to the set value based on the position of the tensioning wheel in the tensioning mechanism (detected by the tensioning wheel position sensor) and the load signal. It fully considers the slippage of the transmission components when the tensioning mechanism meets the load of the passive shaft, and accurately selects whether to continue working with the first tension value or to use the second tension value that can overcome the slippage phenomenon based on the slippage rate, thereby improving stability and reliability.

[0025] Further, step S33 includes: when the actual slip rate is greater than or equal to the preset slip rate, calculating the second tension value based on the first tension value and the actual position of the tensioning mechanism;

[0026] Adjust the position of the tensioning mechanism according to the second tension value.

[0027] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the active shaft speed sensor and the passive shaft speed sensor detect the active shaft speed and the passive shaft speed respectively. When the slippage rate is ≥5%, the controller automatically adjusts the pressure to the set value based on the position of the tensioning wheel in the tensioning mechanism (detected by the tensioning wheel position sensor) and the load signal. It fully considers the slippage of the transmission components when the tensioning mechanism meets the load of the passive shaft, and accurately selects whether to continue working with the first tension value or to use the second tension value that can overcome the slippage phenomenon based on the slippage rate, thereby improving stability and reliability.

[0028] Furthermore, the present invention also provides a tensioning system that automatically adjusts according to load changes, comprising: a tension controller, a drive shaft, a driven shaft, a transmission component, a load sensor, an electric push rod, and a tensioning mechanism. The drive shaft is connected to the driven shaft through the transmission component, the electric push rod is connected to the tensioning mechanism, the tensioning mechanism abuts against the transmission component, the load sensor is mounted on the driven shaft, and both the load sensor and the electric push rod are connected to the tension controller.

[0029] The load sensor is used to obtain the passive shaft torque value;

[0030] The tension controller is used to calculate a first tension value that matches the passive shaft torque value based on the passive shaft torque value.

[0031] The tension controller is also used to adjust the position of the tensioning mechanism according to the first tension force value.

[0032] The beneficial effects of adopting the technical solution of the present invention are as follows: by detecting the torque of the passive shaft, the load signal is transmitted to the controller, and the controller outputs the required pressure control and adjusts the tensioning mechanism, so that the tension of the transmission component changes with the load, and the tension applied to the transmission component also changes in real time, avoiding the problem of the tension value being too small or too large, preventing the transmission component from slipping, and preventing insufficient power transmission, premature wear, excessive wear and breakage failure.

[0033] Furthermore, the tension controller is also used to determine whether the torque value of the passive shaft has changed;

[0034] The tension controller is also used to acquire the time of change of the passive shaft torque value and a preset time when the passive shaft torque value changes.

[0035] The tension controller is also used to determine whether the time for the change in the torque value of the passive shaft is less than the preset time;

[0036] The tension controller is further configured to calculate a first tension value that matches the passive shaft torque value when the change time of the passive shaft torque value is greater than or equal to the preset time.

[0037] The beneficial effects of adopting the above-mentioned further technical solution are as follows: When the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal remains unchanged, fully considering the situations of start-up and occasional load fluctuations, thus improving stability and reliability. When the time is greater than or equal to the preset time, the controller promptly matches the tension value to the final load value based on the final load change, and adjusts the position of the tensioning mechanism according to the tension value, improving the timeliness and accuracy of tensioning.

[0038] Furthermore, the drive shaft is equipped with a drive shaft speed sensor, the driven shaft is equipped with a driven shaft speed sensor, and the tensioning mechanism is equipped with a tensioning wheel position sensor. The drive shaft speed sensor, the driven shaft speed sensor, and the tensioning wheel position sensor are all connected to the tension controller.

[0039] The drive shaft speed sensor is used to acquire the drive shaft speed;

[0040] The passive shaft speed sensor is used to acquire the passive shaft speed;

[0041] The tensioning wheel position sensor is used to obtain the actual position of the tensioning mechanism;

[0042] The tension controller is also used to calculate the actual slip rate based on the rotational speed of the drive shaft and the rotational speed of the driven shaft;

[0043] The tension controller is also used to determine whether the actual slip rate is greater than or equal to the preset slip rate;

[0044] When the actual slip rate is less than the preset slip rate, the position of the tensioning mechanism is adjusted according to the first tension value.

[0045] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the active shaft speed sensor and the passive shaft speed sensor detect the active shaft speed and the passive shaft speed respectively. When the slippage rate is ≥5%, the controller automatically adjusts the pressure to the set value based on the position of the tensioning wheel in the tensioning mechanism (detected by the tensioning wheel position sensor) and the load signal. It fully considers the slippage of the transmission components when the tensioning mechanism meets the load of the passive shaft, and accurately selects whether to continue working with the first tension value or to use the second tension value that can overcome the slippage phenomenon based on the slippage rate, thereby improving stability and reliability.

[0046] Furthermore, the tensioning mechanism is equipped with a tension sensor, the transmission component is a belt or steel belt, the electric push rod is equipped with a spring, one end of the spring abuts against the electric push rod, the other end of the spring abuts against the tensioning mechanism, the drive shaft is equipped with a drive wheel, the driven shaft is equipped with a driven wheel, one end of the transmission component is sleeved on the drive wheel, and the other end of the transmission component is sleeved on the driven wheel.

[0047] The beneficial effects of adopting the above-mentioned further technical solutions are: the tension sensor is used to obtain the actual tension force of the tensioning mechanism, which facilitates the controller to accurately adjust the tensioning mechanism according to the actual situation and the actual position of the tensioning mechanism. The spring facilitates the return of the tensioning mechanism to its original position.

[0048] The advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0049] Figure 1 This is a schematic flowchart illustrating a tensioning method for automatically adjusting tension based on load changes, provided in an embodiment of the present invention.

[0050] Figure 2 This is one of the structural schematic diagrams of a tensioning system that automatically adjusts according to load changes, provided in an embodiment of the present invention.

[0051] Figure 3 This is a second schematic diagram of a tensioning system that automatically adjusts according to load changes, provided as an embodiment of the present invention.

[0052] Explanation of reference numerals in the attached diagram: 1. Tension controller; 2. Drive shaft; 3. Driven shaft; 4. Transmission component; 5. Load sensor; 6. Electric push rod; 7. Tensioning mechanism; 8. Drive shaft speed sensor; 9. Driven shaft speed sensor; 10. Tensioning wheel position sensor; 11. Tension sensor; 12. Spring; 13. Drive wheel; 14. Driven wheel; 15. Transmission sleeve. Detailed Implementation

[0053] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0054] like Figure 1 As shown, this embodiment of the invention provides a tensioning method that automatically adjusts according to load changes, including:

[0055] S1. Obtain the passive shaft torque value;

[0056] S2. Calculate the first tension force value that matches the passive shaft torque value based on the passive shaft torque value;

[0057] S3. Adjust the position of the tensioning mechanism according to the first tension value.

[0058] The beneficial effects of adopting the technical solution of the present invention are as follows: by detecting the torque of the passive shaft, the load signal is transmitted to the controller, and the controller outputs the required pressure control and adjusts the tensioning mechanism, so that the tension of the transmission component changes with the load, and the tension applied to the transmission component also changes in real time, avoiding the problem of the tension value being too small or too large, preventing the transmission component from slipping, and preventing insufficient power transmission, premature wear, excessive wear and breakage failure.

[0059] Further, step 2 includes:

[0060] S21. Determine whether the value of the passive shaft torque has changed;

[0061] When the passive shaft torque value changes, the time of the passive shaft torque value change and a preset time are obtained;

[0062] S22. Determine whether the time for the change in the passive shaft torque value is less than the preset time;

[0063] When the time for the change in the passive shaft torque value is greater than or equal to the preset time, a first tension value that matches the passive shaft torque value is calculated based on the passive shaft torque value.

[0064] The beneficial effects of adopting the above-mentioned further technical solution are as follows: When the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal remains unchanged, fully considering the situations of start-up and occasional load fluctuations, thus improving stability and reliability. When the time is greater than or equal to the preset time, the controller promptly matches the tension value to the final load value based on the final load change, and adjusts the position of the tensioning mechanism according to the tension value, improving the timeliness and accuracy of tensioning.

[0065] Further, step S22 includes: when the time for the change in the passive shaft torque value is less than the preset time, returning to step S1.

[0066] The beneficial effects of adopting the above-mentioned further technical solution are: when the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal does not change, fully considering the start-up and occasional load fluctuations, thus improving stability and reliability.

[0067] Furthermore, the preset time is 2 seconds.

[0068] The beneficial effects of adopting the above-mentioned further technical solution are: when the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal does not change, fully considering the start-up and occasional load fluctuations, thus improving stability and reliability.

[0069] Further, step S3 includes:

[0070] S31. Obtain the speed of the active shaft, the speed of the passive shaft, the preset slippage rate, and the actual position of the tensioning mechanism;

[0071] S32. Calculate the actual slippage rate based on the speed of the drive shaft and the speed of the driven shaft;

[0072] S33. Determine whether the actual slip rate is greater than or equal to the preset slip rate;

[0073] When the actual slip rate is less than the preset slip rate, the position of the tensioning mechanism is adjusted according to the first tension value.

[0074] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the active shaft speed sensor and the passive shaft speed sensor detect the active shaft speed and the passive shaft speed respectively. When the slippage rate is ≥5%, the controller automatically adjusts the pressure to the set value based on the position of the tensioning wheel in the tensioning mechanism (detected by the tensioning wheel position sensor) and the load signal. It fully considers the slippage of the transmission components when the tensioning mechanism meets the load of the passive shaft, and accurately selects whether to continue working with the first tension value or to use the second tension value that can overcome the slippage phenomenon based on the slippage rate, thereby improving stability and reliability.

[0075] Further, step S33 includes: when the actual slip rate is greater than or equal to the preset slip rate, calculating the second tension value based on the first tension value and the actual position of the tensioning mechanism;

[0076] Adjust the position of the tensioning mechanism according to the second tension value.

[0077] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the active shaft speed sensor and the passive shaft speed sensor detect the active shaft speed and the passive shaft speed respectively. When the slippage rate is ≥5%, the controller automatically adjusts the pressure to the set value based on the position of the tensioning wheel in the tensioning mechanism (detected by the tensioning wheel position sensor) and the load signal. It fully considers the slippage of the transmission components when the tensioning mechanism meets the load of the passive shaft, and accurately selects whether to continue working with the first tension value or to use the second tension value that can overcome the slippage phenomenon based on the slippage rate, thereby improving stability and reliability.

[0078] like Figure 2 and Figure 3 As shown, the present invention also provides a tensioning system that automatically adjusts according to load changes, including: a tension controller 1, a drive shaft 2, a driven shaft 3, a transmission component 4, a load sensor 5, an electric push rod 6, and a tensioning mechanism 7. The drive shaft 2 is connected to the driven shaft 3 through the transmission component 4. The electric push rod 6 is connected to the tensioning mechanism 7. The tensioning mechanism 7 abuts against the transmission component 4. The load sensor 5 is mounted on the driven shaft 3. Both the load sensor 5 and the electric push rod 6 are connected to the tension controller 1.

[0079] The load sensor is used to obtain the passive shaft torque value;

[0080] The tension controller is used to calculate a first tension value that matches the passive shaft torque value based on the passive shaft torque value.

[0081] The tension controller is also used to adjust the position of the tensioning mechanism according to the first tension force value.

[0082] The beneficial effects of adopting the technical solution of the present invention are as follows: by detecting the torque of the passive shaft, the load signal is transmitted to the controller, and the controller outputs the required pressure control and adjusts the tensioning mechanism, so that the tension of the transmission component changes with the load, and the tension applied to the transmission component also changes in real time, avoiding the problem of the tension value being too small or too large, preventing the transmission component from slipping, and preventing insufficient power transmission, premature wear, excessive wear and breakage failure.

[0083] Furthermore, the tension controller is also used to determine whether the torque value of the passive shaft has changed;

[0084] The tension controller is also used to acquire the time of change of the passive shaft torque value and a preset time when the passive shaft torque value changes.

[0085] The tension controller is also used to determine whether the time for the change in the torque value of the passive shaft is less than the preset time;

[0086] The tension controller is further configured to calculate a first tension value that matches the passive shaft torque value when the change time of the passive shaft torque value is greater than or equal to the preset time.

[0087] The beneficial effects of adopting the above-mentioned further technical solution are as follows: When the load change caused by instantaneous start-up or blockage is less than the preset time, the controller output tension signal remains unchanged, fully considering the situations of start-up and occasional load fluctuations, thus improving stability and reliability. When the time is greater than or equal to the preset time, the controller promptly matches the tension value to the final load value based on the final load change, and adjusts the position of the tensioning mechanism according to the tension value, improving the timeliness and accuracy of tensioning.

[0088] like Figure 2 and Figure 3 As shown, the drive shaft 2 is further provided with a drive shaft speed sensor 8, the driven shaft 3 is provided with a driven shaft speed sensor 9, and the tensioning mechanism 7 is provided with a tensioning wheel position sensor 10. The drive shaft speed sensor 8, the driven shaft speed sensor 9, and the tensioning wheel position sensor 10 are all connected to the tension controller 1.

[0089] The drive shaft speed sensor is used to acquire the drive shaft speed;

[0090] The passive shaft speed sensor is used to acquire the passive shaft speed;

[0091] The tensioning wheel position sensor is used to obtain the actual position of the tensioning mechanism;

[0092] The tension controller is also used to calculate the actual slip rate based on the rotational speed of the drive shaft and the rotational speed of the driven shaft;

[0093] The tension controller is also used to determine whether the actual slip rate is greater than or equal to the preset slip rate;

[0094] When the actual slip rate is less than the preset slip rate, the position of the tensioning mechanism is adjusted according to the first tension value.

[0095] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the active shaft speed sensor and the passive shaft speed sensor detect the active shaft speed and the passive shaft speed respectively. When the slippage rate is ≥5%, the controller automatically adjusts the pressure to the set value based on the position of the tensioning wheel in the tensioning mechanism (detected by the tensioning wheel position sensor) and the load signal. It fully considers the slippage of the transmission components when the tensioning mechanism meets the load of the passive shaft, and accurately selects whether to continue working with the first tension value or to use the second tension value that can overcome the slippage phenomenon based on the slippage rate, thereby improving stability and reliability.

[0096] like Figure 2 and Figure 3 As shown, further, the tensioning mechanism 7 is equipped with a tension sensor 11, the transmission component 4 is a belt or steel belt, the electric push rod 6 is equipped with a spring 12, one end of the spring 12 abuts against the electric push rod 6, the other end of the spring 12 abuts against the tensioning mechanism 7, the drive shaft 2 is equipped with a drive wheel 13, the driven shaft 3 is equipped with a driven wheel 14, one end of the transmission component 4 is sleeved on the drive wheel 13, and the other end of the transmission component 4 is sleeved on the driven wheel 14.

[0097] The beneficial effects of adopting the above-mentioned further technical solutions are: the tension sensor is used to obtain the actual tension force of the tensioning mechanism, which facilitates the controller to accurately adjust the tensioning mechanism according to the actual situation and the actual position of the tensioning mechanism. The spring facilitates the return of the tensioning mechanism to its original position.

[0098] The electric push rod 6 is connected to the tensioning mechanism 7 via the transmission sleeve 15.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tensioning method that automatically adjusts according to load changes, characterized in that, include: S1. Obtain the passive shaft torque value; S2. Calculate the first tension force value that matches the passive shaft torque value based on the passive shaft torque value; S3. Adjust the position of the tensioning mechanism according to the first tension value; Step 2 includes: S21. Determine whether the value of the passive shaft torque has changed; When the passive shaft torque value changes, the time of the passive shaft torque value change and a preset time are obtained; S22. Determine whether the time for the change in the passive shaft torque value is less than the preset time; When the time for the change of the passive shaft torque value is greater than or equal to the preset time, a first tension value that matches the passive shaft torque value is calculated based on the passive shaft torque value. Step S22 includes: when the time for the change in the passive shaft torque value is less than the preset time, return to step S1; The preset time is 2 seconds; Step S3 includes: S31. Obtain the speed of the active shaft, the speed of the passive shaft, the preset slippage rate, and the actual position of the tensioning mechanism; S32. Calculate the actual slippage rate based on the speed of the drive shaft and the speed of the driven shaft; S33. Determine whether the actual slip rate is greater than or equal to the preset slip rate; When the actual slip rate is less than the preset slip rate, the position of the tensioning mechanism is adjusted according to the first tension value; Step S33 includes: when the actual slip rate is greater than or equal to the preset slip rate, calculating the second tension value based on the first tension value and the actual position of the tensioning mechanism; Adjust the position of the tensioning mechanism according to the second tension value.

2. A tensioning system that automatically adjusts according to load changes, characterized in that, To implement the tensioning method for automatic adjustment according to load changes as described in claim 1, the tensioning system for automatic adjustment according to load changes includes: a tension controller, a drive shaft, a driven shaft, a transmission component, a load sensor, an electric push rod, and a tensioning mechanism. The drive shaft is connected to the driven shaft through the transmission component, the electric push rod is connected to the tensioning mechanism, the tensioning mechanism abuts against the transmission component, the load sensor is mounted on the driven shaft, and both the load sensor and the electric push rod are connected to the tension controller. The drive shaft is equipped with a drive shaft speed sensor, the driven shaft is equipped with a driven shaft speed sensor, and the tensioning mechanism is equipped with a tensioning wheel position sensor. The drive shaft speed sensor, the driven shaft speed sensor, and the tensioning wheel position sensor are all connected to the tension controller.

3. The tensioning system that automatically adjusts according to load changes according to claim 2, characterized in that, The tensioning mechanism is equipped with a tension sensor, the transmission component is a belt or steel belt, the electric push rod is equipped with a spring, one end of the spring abuts against the electric push rod, the other end of the spring abuts against the tensioning mechanism, the drive shaft is equipped with a drive wheel, the driven shaft is equipped with a driven wheel, one end of the transmission component is sleeved on the drive wheel, and the other end of the transmission component is sleeved on the driven wheel.

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