Diameter-variable hydropower installation sleeve plugging cover

• Main Authors: LIU DONG, ZHANG MENG, GAO YONGJUN, RAO YANG, DU HAIDONG, YUAN WENQIAO, GUO HAIYING, TUO HONGRONG, WANG FENFEN, JIA ZHIWU, YUAN HAO, HE ZHUO, SUN HAIGANG, LIU JIAQUAN, JI XUHUI
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2019
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a diameter-variable water and electricity installation sleeve plugging cover which comprises a base plate, a rotary middle shaft, a face plate and six telescopic fan-shapedpetals. A rotary middle shaft is fixedly connected to the chassis through a bottom fixing cover; the chassis is provided with a linear sliding chute in which the fan-shaped petal small circular shaftslides; the surface disc is provided with a concave arc-shaped curve of which the radian is determined according to the diameter of the bottom disc; the top fixed cover is fixed on the surface disc through a rotating shaft; fan-shaped petal small circular shafts are arranged at the lower ends of the six telescopic fan-shaped petals; fan-shaped petal small circular shafts at the lower ends of thesix telescopic fan-shaped petals penetrate through the concave arc-shaped curve to be mounted in the linear sliding groove; a rotating shaft hole is formed in the upper end of the rotating middle shaft, the rotating shaft is ro