Large-span steel tube supporting beam with accurately-adjusted length

• Main Authors: HE LIANGDE, HUANG TING, HOU LIJUN, WANG ZHEN
• Format: Patent
• Language: English
• Published: 18.11.2015
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a large-span steel tube supporting beam with the accurately-adjusted length. The large-span steel tube supporting beam with the accurately-adjusted length is composed of steel tube support beam bodies at the two sides and a stretching and retraction control segment in the middle. The stretching and retraction control segment is wrapped with a heat insulation device and is internally provided with a hydraulic bin base and a piston base. A hydraulic bin is embedded in the middle of the hydraulic bin base. A heating device is arranged in the hydraulic bin. A piston is arranged in the middle of the piston base. A temperature sensor is arranged in the piston. A displacement sensor is arranged in the outer side of the piston base and is arranged between the hydraulic bin base and the side wall of the piston base. According to the large-span steel tube supporting beam with the length accurate adjustment function, the length of the large-span steel tube supporting beam is adjusted through the difference between thermal expansion features of different fluid and solid materials in the stretching and retraction control segment, the aim that the length of the large-span steel tube supporting beam is adjusted is achieved, and meanwhile, the large-span steel tube supporting beam has the beneficial effects of being high in accuracy, convenient and rapid to operate, low in energy consumption, high in recycle rate and the like.