Milling tooth

Abstract

The invention discloses a milling tooth for a road pavement milling machine. The milling tooth comprises a hard-alloy cutter point, a cutter body, a snap spring sleeve and a wear-resisting gasket, wherein the cutter body comprises a cutter body head part and a cutter body rod part, when the milling tooth is in work, the wear-resisting gasket is arranged on the junction between the cutter body rod part and the cutter body head part, when the milling tooth is not in work, the snap spring sleeve is sleeved with the wear-resisting gasket, the cutter body head part is provided with a plurality of pits and / or projections, the cutter body rod part is provided with an annular groove, the cutter body rod part is sleeved with the snap spring sleeve, the snap spring sleeve is provided with a concave part, the concave part is embedded in the annular groove of the cutter body rod part, the outer edge of the wear-resisting gasket is provided with a flange extending in the axial direction, the flange extending in the axial direction is provided with a plurality of notches, the lower end of the wear-resisting gasket is provided with an annular overhanging part, the annular overhanging part surrounds the upper end of the snap spring sleeve, and a labyrinth gap is formed between the inner wall of the annular overhanging part and the periphery of the upper end of the snap spring sleeve. The milling tooth is smooth to rotate, so that the abrasion of a cutter holder can be prevented.

Description

technical field [0001] The invention relates to a road surface milling machine, in particular to a milling tooth for the milling machine. Background technique [0002] Milling machines are used for milling operations on road surfaces. The milling tooth is the wearing part of the milling machine that directly acts on the road surface. In the Chinese patent application number 200620084886.3, named "a milling tooth" document, the milling tooth is mainly composed of: carbide tip, cutter body (composed of cutter body head and cutter body stem), wear-resistant Composed of gaskets and snap ring sleeves. The structure of the milling tooth has the following disadvantages: the surface of the head of the cutter body is smooth, which is not conducive to the rotation of the milling tooth under the action of friction during the operation; the structure of the wear-resistant gasket is simple, which is not conducive to protecting the tool seat; The gap between the mating surface of the g...

AI Technical Summary

Problems solved by technology

The structure of the milling tooth has the following disadvantages: the surface of the head of the cutter body is smooth, which is not conducive to the rotation of the milling tooth under the action of friction during the operation; the structure of the wear-resistant gasket is simple, which is not conducive to protecting the tool seat; The gap between the mating surface of the grinding pad and the head of the cutter body enters the gap between the circlip sleeve and the rod of the cutter body; the matching structure of the circlip sleeve and the groove of the rod of the cutter body can only limit the axis of the cutter body in one direction During the operation process, the groove of the retainer sleeve and the rod of the cutter body is easy to be damaged, resulting in failure; there is a certain distance between the wear-resistant gasket and the retainer sleeve, and dirt is easy to enter through this distance during the operation process. The gap between the stem of the cutter body and the retaining ring sleeve causes the cutter body to rotate poorly, which in turn causes failure

The above shortcomings lead to problems such as poor rotation of the milling gear, partial wear, short life, and wear of the milling gear holder.

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