Quick connecting device for steel bars

Abstract

The invention discloses a quick connecting device for steel bars comprising a fixed valve body and a moving valve body. The quick connecting device for the steel bars is characterized in that the fixed valve body is connected to an end cover with a round hole in a threaded mode to fix the steel bars, the inside of the fixed valve body is provided with a limited block for limiting the outside surface of the steel bar end, and bar-shaped holes are formed above and below one end, close to the end cover, of the fixed valve body; first protrusion bodies are arranged in the bar-shaped holes, a groove-built-in spring is disposed between the upper and lower first protrusion bodies for supporting, and a telescopic rod is arranged in the spring; a connecting body is arranged in the fixed valve bodyand the connecting body is fixedly connected to the fixed valve body in a threaded mode, one of the steel bars is squeezed and fixed between the connecting body and the moving valve body, and holes connected through pins are up-down formed in the corresponding positions on the pressing surface of the moving valve body and the fixed valve body; and the connecting body is sleeved with a rubber ring,the interior of one side, close to the moving valve body, of the connecting body is hollow, and an inner plug is arranged in one side, close to the steel bars, of the connecting body and is connectedwith the connecting body in a threaded mode. The quick connecting device for the steel bars is stable in structure and convenient to popularize, and the connection of the steel bars is simpler and more convenient through the arrangement of the spring in a connecting sleeve.

Description

technical field [0001] The invention relates to the technical field of connecting devices, in particular to a quick connecting device for steel bars. Background technique [0002] In the prior art, concrete methods such as welding, binding and overlapping, and mechanical connection can be used for connection of steel bars. The connection of prefabricated reinforced concrete components is usually to realize the connection of steel bars first, and then realize the connection of other parts on this premise. For example, in the connection process of prefabricated components, the steel bars are connected first, and then the surrounding structures such as concrete are poured and connected. In actual engineering, considering the economy and the reliability of joint performance, in the connection of large-diameter steel bars, the three steel bar connection methods mentioned above are the most used mechanical connection with the best effect. In the existing sleeve grouting technolo...

AI Technical Summary

Problems solved by technology

In the existing sleeve grouting technology in foreign countries, the connection between the steel bars is realized by using the sleeve grouting at the same time, and the relative sliding constraint between the sleeve and the steel bars is guaranteed by the filler; but because of the resistance of the filler Limited shear capacity necessitates the use of very long sockets to meet basic performance requirements

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