Connecting device of telescopic rod

Abstract

The invention discloses a connecting device of a telescopic rod. The connecting device is used for connection of an upper-stage rod and a lower-stage rod and comprises a locking sleeve arranged between the upper-stage rod and the lower-stage rod, and an inter-rod angle adjustment mechanism arranged at the joint of the upper-stage rod and the lower-stage rod. The locking sleeve comprises an upper end, a middle and a lower end which are sequentially connected. The upper end of the locking sleeve is connected with the upper-stage rod. The middle of the locking sleeve is a telescopic section. The lower end of the locking sleeve is connected with the outer side of the joint of the upper-stage rod and the lower-stage rod in a sleeving mode. The connecting device of the telescopic rod is simple in structure, easy to realize, low in cost, and capable of providing axial load bearing between the rods and preventing circumferential sliding between the rods, and the angle of the lower-stage rod relative to the upper-stage rod is adjustable.

Description

technical field [0001] The invention relates to a connection device, in particular to a connection device suitable for circular tube telescopic rods that need to bear axial load and prevent circumferential sliding between the rods. Background technique [0002] Telescopic rods are widely used in various fields of production and life, and are generally composed of round rods with multi-stage pipe diameters that are close to each other and gradually reduced. When the use requirements of the telescopic rods are different, the applicable connection devices between the rods are different. Commonly used is a connecting device that uses the elastic pressure exerted by the upper rod to compress the lower rod by the memory part, or utilizes the buckle to compress the elastic round rod. The connecting device in the prior art is not conducive to the axial load bearing between the rods, and also prone to sliding between the rods. In the prior art, there is a device that adopts a singl...

AI Technical Summary

Problems solved by technology

The connecting device in the prior art is not conducive to the axial load bearing between the rods, and it is also prone to sliding between the rods

In the prior art, there is a device with a single pin and a spring in a C-shaped groove. Although the telescopic rods will not slide relative to each other, the single-point connection is not conducive to the axial force of the telescopic rods.

In addition, in engineering practice, it is required that the angle of the lower rod relative to the upper rod can be adjusted, and at any set angle, the upper and lower rods must be circumferential and non-slip, and the connecting device between the rods in the prior art cannot meet the requirements

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