Fixed centre structure of cage winch

Abstract

The invention provides a fixed centre structure of a cage winch. The fixed centre structure comprises a centre sleeve, a centre shaft, a tension disc and a pressing plate; the centre shaft is rotationally connected to the interior of the centre sleeve; the tension disc is rotationally connected to the outside of the centre sleeve and rotationally connected with the centre sleeve through a first bearing; after installation and cooperation of the centre sleeve and the tension disc, an installation groove for installing the first bearing is formed; the first bearing is in interference fit with the installation groove, an inner ring of the first bearing is installed on the centre sleeve and limited by a first steel cable baffle ring installed on the centre sleeve, and an outer ring of the first bearing is installed on the tension disc and pressed by the pressing plate; the installation groove is completely sealed through the pressing plate; and O-shaped sealing rings for sealing lubricating grease of the first bearing are arranged between the pressing plate and the centre sleeve as well as between the tension disc and the centre sleeve. According to the fixed centre structure of the cage winch, after long-term production operation, the tension disc can still flexibly rotate, and the jamming phenomenon is avoided.

Description

technical field [0001] The invention relates to the technical field of a cage winch, in particular to a structure for fixing a thimble of a cage winch. Background technique [0002] The disc loading and unloading structure in the winching cage of the cage winching machine is a movable thimble device and a fixed thimble device. The fixed thimble device includes a thimble sleeve, a tension plate and a pressure plate set outside the thimble sleeve. The thimble sleeve and the cradle thimble seat are closely matched and stopped by pins. A tension belt composed of a thin steel belt and a friction disc is inserted in the opening groove of the tension disc. When assembling the cable reel, the stop pin fixed on the tension reel is inserted into the small hole on the side of the reel to drive the reel to rotate with damping, and the friction of the tape can be adjusted by adjusting the wing nut with the tension tape fixed on the cradle The magnitude of the force to achieve the tensi...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the above-mentioned prior art are that a group of balls are used as the kinematic pair between the tension disc and the pressing plate and the thimble sleeve, which requires high machining accuracy on the arc-shaped surface matching the tension disc, the pressing plate, the thimble sleeve and the balls, and A standard surface hardening hardness is required, otherwise there will be severe wear of the balls and ball grooves due to long production runs

In addition, the grease in the ball groove is not sealed, and the grease is easy to squeeze out, resulting in poor lubrication

Images