Pipe fitting connecting device

Abstract

The invention relates to a pipe fitting connecting device. The device is characterized by comprising an upper connecting piece, a lower connecting piece, a positioning column, a connecting nut, two support pieces, a slide rod and a fastening nut; the outer sides of the upper connecting piece and the lower connecting piece are respectively connected with one ends of two connected pipe fittings; the two support pieces are respectively mounted in the upper connecting piece and the lower connecting piece; the lower end of the positioning column is fixed with the upper end of the lower connecting piece; the upper end of the positioning column is inserted in the upper connecting piece; the connecting nut is mounted at the external of the positioning column; one end of the slide rod is fixed with one support piece, and the other end penetrates through the positioning column to fixed with the support piece mounted in the lower connecting piece; the upper connecting piece and the lower connecting piece are in threaded connection through the connecting nut and the fastening nut; the upper connecting piece is a hollow structure; and the upper end of the upper connecting piece is an upper connecting piece circular table structure capable of being supported by the support pieces.

Description

technical field [0001] The invention relates to a connection and fastening device, in particular to a pipe connection device used for connection and fastening of hollow pipes. Background technique [0002] In industrial production and life, construction facilities such as scaffolding built from pipes and drilling equipment using pipe fittings are increasingly used. Therefore, higher requirements are put forward for pipe fitting connection devices: on the one hand, they need to have sufficient connection strength and Reliability; on the other hand, it needs to be convenient and quick to assemble, can be disassembled repeatedly, compact in structure, and beautiful in appearance; in addition, new specific requirements are put forward for the pipe fitting connection device for special applications, such as in order to ensure the pipe fitting connection in the pipe fitting lifting equipment The transition is stable and reliable, and the pipe fittings need to be connected with equ...

AI Technical Summary

Problems solved by technology

In response to this technical problem, a variety of pipe fitting connecting devices have been developed at home and abroad. The pipe fitting connecting device involved in the patent document "Pipe Fitting Connecting Device (CN105324598A)" adopts the method of pressing the wedge-shaped surface on the connected pipe through flange connection to realize two pipe fittings. Although the device is compact in structure and reliable in connection, it is inconvenient to install multiple bolts during the connection process, and since the diameter of the flange is larger than the outer diameter of the connected pipe fittings, it is difficult to realize the equivalence between the connected pipe fittings. Diameter connection; the patent document "A Rod Connecting Device (CN105715644A)" relates to a rod connecting device that needs to weld two parts with occlusal parts on the rod to be connected respectively, and realize it through the cooperation of the occlusal part and the locking device. The connection of two rods, although the device is easy to install, the connection strength and reliability are not good. During use, the two parts of the device need to be welded to the rods to be connected, which is difficult to disassemble and assemble repeatedly, and it is difficult to apply to non-metallic, etc. Rods that are not easily welded and do not transfer torque effectively

To sum up, although the existing pipe fitting connecting device can realize the connection of two pipe fittings, there are many shortcomings, or the connection strength and reliability of the pipe fittings are not good, and the torque cannot be effectively transmitted, or the structure size is large, and the connection between the connected pipe fittings cannot be realized. The equal diameter connection, or inconvenient installation, difficult to achieve fast connection, poor operability

Images