Feeding device for U-shaped pre-stress concrete pile plank and control method

Abstract

The invention discloses a feeding device for a U-shaped pre-stress concrete pile plank and a control method. A proportion integration differentiation (PID) controller transmits an instruction to a variable-frequency motor and a servo electric cylinder according to a preset flow value, the variable-frequency motor drives a two-directional helical shaft to rotate, and the servo electric cylinder controls a radian discharging door to be opened to a certain degree; a weighing sensor collects a weight signal of a material in real time and transmits the weight signal to the PID controller; the PID controller transmits a processed result to the variable-frequency motor and the servo electric cylinder; the variable-frequency motor controls the two-directional helical shaft to be roughly adjusted; when the real flow of the material does not stay within a set threshold value range, the PID controller controls the servo electric cylinder to change the openness of the radian discharging door so as to perform the fine adjustment; and when the real flow reaches a feeding target value or a minimal alarming value, the PID controller controls the variable-frequency motor and the servo electric cylinder to stop working. One hopper is used for feeding different production lines, and the discharging speed is controlled in a closed-loop way, so that the production efficiency is improved, the labor is saved, the cost is reduced, and the feeding accuracy and uniformity can be guaranteed.

Description

technical field [0001] The invention relates to production equipment for prestressed concrete sheet piles, which belongs to a feeding device and a control method thereof, and is especially suitable for the process of producing U-shaped prestressed concrete sheet piles by a pretensioning method. Background technique [0002] The pretensioning method is a method of pre-stressing the concrete members during the prefabrication process to improve the performance of the members in order to improve the crack resistance of reinforced concrete members and avoid premature cracks in reinforced concrete members. It plays an important role in engineering construction. play an important role. Usually, the prestressed tendons are stretched before pouring concrete, and the stretched prestressed tendons are temporarily anchored on the pedestal or steel form, and then the concrete is poured until the concrete strength reaches no less than 75% of the concrete design strength value, ensuring th...

AI Technical Summary

Problems solved by technology

[0003] In the production process of concrete prestressed sheet piles, the production line adopts a multi-line layout, and each production line needs a set of feeding equipment. The mold casting is carried out through the hopper, and the discharge port of the hopper is manually controlled and controlled. Intervention, so the quality of the whole distributing process is not guaranteed, and the efficiency is low, the feeding port is often blocked, and the most important thing is that the process requirements cannot be met, and uniform and quantitative distributing cannot be achieved.

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