Automatic cable take-up and pay-off device of nuclear power plant underwater mobile robot

Abstract

The invention discloses an automatic cable take-up and pay-off device of a nuclear power plant underwater mobile robot. The automatic cable take-up and pay-off device comprises a machine frame, a cable take-up rolling wheel, a cable lead-in mechanism and a driving mechanism. The cable lead-in mechanism comprises a first rotary shaft rotationally connected to the machine frame, a supporting plate connected to the first rotary shaft and at least one pair of pressing rolling wheels mounted on the supporting plate. The driving mechanism comprises a motor, a second rotary shaft rotationally connected to the machine frame, a first belt wheel assembly connected between the second rotary shaft and an output shaft of the motor, and a second belt wheel assembly connected between the first rotary shaft and the second rotary shaft. The cable take-up rolling wheel is fixedly arranged on the second rotary shaft in a sleeving mode. Automatic cable take-up and pay-off in the operation process are achieved, and the labor intensity of operators is relieved; rolling wheel sets have the decontamination function, and the level of ashore cable radiation dose is lowered; and transportation is facilitated, the first rotary shaft is used as a rotary shaft of the supporting plate and a rotary shaft of the pressing rolling wheels as well, the purpose of mechanism simplification is achieved, and the supporting plate can be folded.

Description

technical field [0001] The invention relates to the field of nuclear power detection equipment, in particular to an automatic cable retracting device for an underwater mobile robot of a nuclear power plant. Background technique [0002] The cotter pin of the control rod guide cylinder is located in the lower part of the upper reactor internals of the nuclear power plant reactor. The misalignment of the rod guide tube will affect the falling time of the control rod. In addition, the broken cotter pin part will enter the primary circuit of the nuclear power plant as a foreign object, which will damage other important equipment and affect the integrity of the equipment. Therefore, it is necessary to carry out in-service inspection on the cotter pin of the control rod guide cylinder to monitor its quality status during operation and improve the reliability, safety and integrity of the nuclear power plant. [0003] In-service inspections are generally carried out during the over...

AI Technical Summary

Problems solved by technology

When the underwater mobile robot needs to move forward or backward during the inspection, the cables must be replenished or recovered in time, so as not to interfere with the movement of the robot, affect the positioning accuracy, or even hinder the movement

The number of cotter pin inspections is large, and the single inspection time is short. If the cable is sent and received manually, it needs to be operated frequently for a long time, and the labor intensity is high.

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