Steelwire winder stress fluctuation control method and stress fluctuation control device employing same

Abstract

The invention belongs to the field of stress control of a PCCP (Prestressed Concrete Cylinder Pipe) winder and particularly relates to a steelwire winder stress fluctuation control method. Two stress fluctuation controllers are arranged between a stress wheel and a guide wheel of the steelwire winder to adjust and control the winding stress twice. The invention also relates to a stress fluctuation control device employing the method. The device comprises two stress fluctuation controllers which are sequentially arranged between the stress wheel and the guide wheel of the steelwire winder, a shock-absorbing guide wheel is arranged between the two controllers, and the second stress fluctuation controller is provided with a tension sensor. According to the invention, unstable stress of the traditional steelwire winder is overcome, stress fluctuation amplitude is reduced, product quality is ensured, and steelwire winding speed and winding efficiency are improved.

Description

technical field [0001] The invention relates to a stress fluctuation control method of a wire winding machine and special stress fluctuation control equipment thereof, belonging to the field of stress control of a prestressed steel tube concrete pipe winding machine. Background technique [0002] Prestressed Concrete Cylinder Pipe (PCCP) for short, is a concrete core with a steel cylinder wrapped with prestressed steel wire, and then sprayed with cement mortar to form a dense protective layer. It is a combination of steel plate, concrete, high-strength steel wire and cement mortar. A new type of water delivery pipe with a composite structure composed of several materials. Wire winding is the key manufacturing process of prestressed steel tube concrete pipe, that is, the high-strength steel wire is wound on the outside of the PCCP pipe core in a uniform and spiral shape according to the specified pitch according to the design control stress value. The national standard stipu...

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Problems solved by technology

This situation will occur repeatedly, and the conversion process will also occur repeatedly. However, the generation and transmission of electrical signals, and the acceleration and deceleration of the chassis motor will have obvious reaction lag compared to the instantaneous sliding of the steel wire, resulting in the rotation of the PCCP die and the stress wheel. The speed difference is difficult to maintain continuously and stably according to the design value, resulting in instantaneous fluctuations in the tensile stress of the high-strength steel wire

At the same time, if the wire feeding speed of the stress wheel is increased, the fluctuation range of the stress of the high-strength steel wire will be aggravated.

Therefore, in order to ensure that the stress fluctuation of high-strength steel wire conforms to the range of ±10% of the design stress value specified in the national standard, it is necessary to reduce the wire feeding speed of the stress wheel of the wire winding machine, thereby reducing the production efficiency of wire winding

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