Toothed roll structure of a roll crusher and double-toothed roll crusher

By using a solid, one-piece molded toothed roller main shaft and wedge-shaped connecting block design, the problem of insufficient stability of traditional double toothed roller crushers under high-speed impact is solved. Rigid positioning and thread protection of the toothed plates are achieved, which improves crushing efficiency and the continuous operation capability of the equipment, and reduces maintenance costs.

CN224541844UActive Publication Date: 2026-07-24TANGSHAN TIANHE TECH DEV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TANGSHAN TIANHE TECH DEV
Filing Date
2025-08-19
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The toothed ring, toothed cap, and toothed roller body of traditional double toothed roller crushers are not stable enough under high-speed impact conditions, and are prone to axial displacement or circumferential loosening, resulting in reduced crushing efficiency, uneven output particle size, limited equipment capacity, and frequent toothed plate loosening causing equipment shutdown for maintenance and irreparable damage to the high-value toothed roller spindle.

Method used

The design adopts a solid, one-piece molded toothed roller spindle, combined with axially continuously distributed keyway groups and wedge-shaped connecting blocks. The toothed plate is rigidly positioned in the axial and circumferential directions through the combination of raised fixing keys and threaded protective sleeves. The stability is improved by self-aligning roller bearings, avoiding thread slippage and fatigue failure of the threaded holes.

Benefits of technology

It significantly improves the stability and impact resistance of the toothed roller structure under high-speed impact conditions, reduces equipment maintenance and replacement costs, increases crushing efficiency and continuous operation capacity of the equipment, and extends the service life of the toothed roller spindle.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224541844U_ABST
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Abstract

The utility model relates to a crusher technical field, concretely is a kind of toothed roll structure and double-toothed roll crusher of roll crusher, the toothed roll structure includes solid toothed roll spindle, its both ends are equipped with bearing mounting journal, and multiple rows of toothed plate assemblies are continuously arranged along the axial direction in outer peripheral wall;Multiple rows of keyway groups are continuously arranged along the axial direction on toothed roll spindle, and each row contains multiple circumferential interval axial keyways;At least two threaded holes of preloaded thread protection sleeve are equipped with in each axial keyway side;Toothed plate assembly includes multiple toothed plates and first connecting piece, and the inner wall of toothed plate is equipped with protruding fixed key and is inserted into axial keyway;First stepped through-hole is equipped on toothed plate, and first connecting piece is connected with thread protection sleeve by passing through first stepped through-hole.The solid spindle is set to enhance overall stability;Protruding fixed key and axial keyway are matched to realize the circumferential rigid positioning of toothed plate;First connecting piece and thread protection sleeve are connected to realize axial fixation;Thread protection sleeve avoids thread hole thread slipping, protects spindle from structural damage, and reduces maintenance cost.
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