Steel ball type pipe pile quick connecting piece

Abstract

The invention discloses a steel ball type pipe pile quick connecting piece, and relates to the engineering pile connection. The steel ball type pipe pile quick connecting piece aims to solve the problem that due to the fact that a connecting piece needs to be inserted into the specific depth of a lining and can hook the bottom end of the lining, the accuracy requirements of the depths of a large nut and a small nut preburied in concrete are excessively high. According to the technical scheme, the steel ball type pipe pile quick connecting piece is characterized by comprising an upper preburiedpart and a lower preburied part. An insertion part is fixedly arranged on the upper preburied part and comprises an insertion connection cylinder. Multiple rolling ball inclined grooves are formed inthe outer circumferential face of the insertion connection cylinder in an inclined mode in the length direction, and steel balls are arranged in the rolling ball inclined grooves in a rolling fit mode. A lining is fixedly arranged on the lower preburied part, and a circumferential conical platform face is arranged on the inner wall of the lining. According to the steel ball type pipe pile quick connecting piece, the purpose that fixing of the insertion connection cylinder and the lining can be achieved by the steel balls when the insertion connection cylinder is inserted into the random depthof the lining is achieved, and therefore the requirement for the preburying accuracy of the upper preburied part and the lower preburied part is reduced.

Description

technical field [0001] The present invention relates to engineering pile connection, more specifically, it relates to a steel ball type pipe pile quick connector. Background technique [0002] China's pipe piles started in 1987. After more than ten years of development, more than 260 pipe pile manufacturers have been formed across the country. The pipe pile industry has developed rapidly in recent years. At present, domestic pipe piles are mainly used in various high-rise buildings below 60 stories and low-cap pile foundations for industrial and civil buildings, engineering infrastructure fields such as railways, highways, bridges, ports, wharfs, water conservancy, municipal services, structures, and large equipment. . Among them, the application proportion in the real estate field accounts for about 80%, and the highway and railway account for about 15%. The annual demand reaches hundreds of millions of meters. [0003] The pipe piles have a standard section length of 10...

Images