Device for automatically adjusting and controlling tension and control method thereof

Abstract

The invention relates to a device for automatically adjusting and controlling tension. The device for automatically adjusting and controlling the tension is characterized by comprising a tension controller, a direct-current motor, a trapezoid lead screw nut, a potentiometer type sensor and a tension sensor. An output shaft of the direct-current motor is fixedly connected with a nut body of the trapezoid lead screw nut, a lead screw of the trapezoid lead screw nut is fixedly connected with the tension sensor, a rotating shaft of the potentiometer type sensor is meshed with the output shaft of the direct-current motor, and the tension controller collects actual tension of the tension sensor and actual angular displacement of the potentiometer type sensor, controls the direct-current motor to rotate, and indirectly achieves control over tension through control over angular displacement. The device for automatically adjusting and controlling the tension achieves adjustment of the tension through a method of carrying out fixed step-length position control on the direct-current motor through the potentiometer type sensor, when a value of the actual tension reaches to a value of target tension, invariability of the tension can be kept and controlled through self-locking effect of the trapezoid lead screw nut, and the situation that energization is carried out all the time to carry out dynamic regulation on the tension is not needed.

Description

technical field [0001] The invention relates to an automatic tension adjustment and control device and a control method thereof, which are suitable for the field of tension automatic adjustment and control of ropes (only capable of bearing tension). Background technique [0002] In the fields of bridge and ship construction, textile machinery, power transmission and distribution, etc., there are many occasions that require tension adjustment and control, such as the turning of the transmission line or the pole at the end. Lay out the guy wires in the direction and fix them on the ground, and adjust the tension of the guy wires to ensure the force balance. The typical feature of this type of application is that once the tension is adjusted to balance, as long as the self-locking is in the current state, there is no need to adjust the tension a second time for a relatively long period of time. [0003] In the existing tension control schemes, most of them adjust the tension m...

AI Technical Summary

Problems solved by technology

[0003] In the existing tension control schemes, most of them adjust the tension manually, which is time-consuming and labor-intensive, and the precision of tension adjustment is not high enough.

Although some tension adjustment and control devices are automated, they need to continuously and actively adjust the tension. Once the system program goes wrong or the power is cut off, the tension will be released or other abnormalities will occur, which is not suitable for long-term uninterrupted work.

There are also tension adjustment and control devices that can only be powered by AC power, and cannot or are not convenient to use outdoors.

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