Taper spline connecting device capable of preventing cutting disc of ditcher from loosening

Abstract

The invention discloses a taper spline connecting device capable of preventing a cutting disc of a ditcher from loosening. The connecting device comprises a cutting disc shaft bearing seat, nuts, cutting disc spline shafts and wheel vortex spline housings, the cutting disc spline shafts are tightly connected on the cutting disc shaft bearing seat through the corresponding nuts, each wheel vortex spline housing is mounted on the outer periphery of the corresponding cutting disc spline shaft, and spline fit between each cutting disc spline shaft and the corresponding wheel vortex spline housing is taper spline fit. Cutting disc shaft splines and cutting disc wheel vortex spline joints are in taper spline fit, and friction coefficient of fit of the cutting disc spline shafts and wheel vortex splines is increased. When the nuts of the spline shafts are tightened, the cutting disc shaft splines and the cutting disc wheel vortex spline joints are enabled not to loosen, thus the spline portion cannot be impacted and deformed due to loosening, the splines cannot prematurely damage an urban power transmission function, and difficulty in dismounting due to the fact that the splines are tightly engaged cannot be caused. After improvement, the splines are convenient to mount and dismount since the spline taper fit portion can be loosened only by loosening the spline shaft tightening nuts and slightly knocking the cutting disc.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, in particular to a coupling device of a taper spline for preventing the cutter head of a ditching machine from loosening. Background technique [0002] The ditching machine is a kind of ditching machine used in conjunction with a walking tractor. It can be installed in front or behind the tractor to help farmers realize the mechanization of ditching. When the trencher is in working state and non-working state, the following problems often occur: [0003] (1) Spline connection: Due to the large diameter of the cutter head of the ditching machine and the impact load, the nuts often become loose, resulting in the loosening of the connection between the spline of the cutter head shaft and the vortex spline of the cutter head, resulting in the The vortex splines of the cutter head are impacted and deformed, causing the splines to be damaged and lose the power transmission function prematurely. ...

AI Technical Summary

Problems solved by technology

[0003] (1) Spline connection: Due to the large diameter of the cutter head of the ditching machine and the impact load, the nuts often become loose, resulting in the loosening of the connection between the spline of the cutter head shaft and the vortex spline of the cutter head, resulting in the The vortex spline of the cutter head is impacted and deformed, causing the spline to be damaged and lose the power transmission function prematurely

[0004] (2) Disassembly of the cutter head: the matching coefficient of the key grooves does not match, and the gap between the key grooves should not be too large, otherwise the cutter head shaft will be easily damaged; The cutter head is difficult to disassemble after using it for a period of time, and it is time-consuming and labor-intensive if farmers do not use it in the field

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