A flexible shaft jacket

Abstract

A flexible shaft jacket, the invention relates to the technical field of pipeline dredging machinery accessories, the bottom of the rolling zone shell is fixed with a friction zone base, the bottom of the friction zone base is fixed with a bottom cover, and screws penetrate through the bottom cover, the friction zone base and the rolling zone The shell is set and threaded; the flexible shaft is set up and down in the cage, and the cam sleeve is set outside the shell in the rolling area; several rolling bodies are respectively movably embedded in the grooves opened in the ring wall of the shell in the rolling area , and the outer wall of the rolling body is set in movable contact with the inner wall of the cam sleeve; several elastic bodies are respectively embedded in the grooves opened in the base of the friction zone, the elastic body is composed of a friction body and a spring, and one end of the spring is fixed on the base of the friction zone On the inner wall of the tank, the other end of the spring is sleeved on the friction body, and the friction body is movable against the flexible shaft. Effectively prevent the rolling body from idling without contact with the flexible shaft due to centrifugal force, and ensure the effective clamping of the flexible shaft by the rotation of the jacket.

Description

technical field [0001] The invention relates to the technical field of pipeline dredging mechanical accessories, in particular to a flexible shaft jacket. Background technique [0002] Existing flexible shafts for dredging pipelines are slender springs with the same outer diameter, which can be lengthened by connecting joints at both ends of the flexible shaft, and the flexible shaft clamped by the flexible shaft jacket of the dredging machine rotates to dredge the pipeline, and the flexible shaft jacket can pass through Structures such as threads are connected with dredge machinery. The patent number is CN201921147826.5, a flexible shaft jacket in a hollow drill type pipe dredging machine. During the implementation process, there is a problem that the jacket cannot clamp the flexible shaft due to idling. It is found that the rotation of the cam sleeve will make the rolling body Centrifugal force radially throws away the flexible shaft, destroying the wedge rolling locking ...

AI Technical Summary

Problems solved by technology

The patent number is CN201921147826.5, a flexible shaft jacket in a hollow drill type pipe dredging machine. During the implementation process, there is a problem that the jacket cannot clamp the flexible shaft due to idling. It is found that the rotation of the cam sleeve will make the rolling body Centrifugal force radially throws away the flexible shaft, destroying the wedge rolling locking structure of the cam sleeve, rolling element and flexible shaft, and cannot reliably clamp the flexible shaft, although at this time, it is enough to lightly hold the cage with a light hand to apply damping Clamping is achieved, but it still reduces the customer's operating experience, which needs to be improved urgently

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