CN202638475U

CN202638475U - Broken tooth fixed device

Info

Publication number: CN202638475U
Application number: CN 201220320394
Authority: CN
Inventors: 张永斌
Original assignee: Beijing Bochuangkaisheng Mechanical Manufacturing Co ltd
Current assignee: Beijing Bochuangkaisheng Mechanical Manufacturing Co ltd
Priority date: 2012-07-03
Filing date: 2012-07-03
Publication date: 2013-01-02
Anticipated expiration: 2022-07-03

Abstract

The utility model relates to a broken tooth fixed device which comprises bearing chambers, tooth roller shafts, a broken tooth, a key, a key groove and retainer rings. The bearing chambers are symmetrically sleeved on two ends of the cylindrical tooth roller shafts, the broken tooth is connected with the middle part of the tooth roller shafts through the key, the inner wall of the broken tooth is provided with the key groove which is in axial parallel with the tooth roller shafts, one part of the key is arranged inside the key groove, the other part of the key is arranged inside a groove on the tooth roller shaft, the tooth roller shafts at two ends of the broken tooth are respectively provided with a ring-shaped groove, the two retainer rings in a semicircle structure are fixedly bucked into the ring-shaped groove through a bolt, and the retainer rings are tightly attached with two ends of the broken tooth. The broken tooth device prevents the broken tooth form moving in axial direction, and avoids fracture of the broken tooth by colliding with bearing chambers.

Description

A kind of device of fixedly crushing teeth

Technical field

The utility model relates to a kind of device of fixedly crushing teeth, belongs to mechanical field.

Background technology

The phenomenon of crushing teeth axial float often appears in existing disintegrating machine in use procedure, cause the collision of crushing teeth and bearing chamber to cause the crushing teeth fracture.

The utility model content

Technical problem to be solved in the utility model provides a kind of device of fixedly crushing teeth, prevents the crushing teeth axial float, avoids crushing teeth collision fracture.

The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of device of fixedly crushing teeth, comprise bearing chamber, the discaling roll axle, crushing teeth, key, keyway, back-up ring, wherein, described bearing chamber symmetry is sleeved on the two ends of cylin-drical tooth roll shaft, described crushing teeth is connected by the zone line of key with the discaling roll axle, the inwall of described crushing teeth is provided with the keyway with discaling roll axle axially parallel, a described key part places keyway, another part places in the groove on the discaling roll axle, be respectively equipped with an annular groove on the discaling roll axle at described crushing teeth two ends, the back-up ring of described two semicircular structures is bolted and is fastened in the annular groove, and described back-up ring is close to the two ends of crushing teeth.

The beneficial effects of the utility model are: process annular groove at the discaling roll axle, with bolt fixedly the Anti-moving back-up ring at groove, when crushing teeth produces axial float, back-up ring effectively prevents the play of crushing teeth, avoid with bearing chamber friction occuring and cause damage of bearings, increased the service life of crushing teeth and reduced maintenance cost.

Description of drawings

Fig. 1 is the fixedly structural representation of crushing teeth device of the utility model;

Fig. 2 is the structural representation of back-up ring;

Fig. 3 is the fixedly cutaway view of crushing teeth device of the utility model;

In the accompanying drawing, the list of parts of each label representative is as follows:

1, bearing chamber, 2, back-up ring, 3, crushing teeth, 4, keyway, 5, the discaling roll axle, 6, key.

The specific embodiment

Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.

Shown in Fig. 1～3, a kind of device of fixedly crushing teeth, comprise bearing chamber 1, discaling roll axle 5, crushing teeth 3, key 6, keyway 4, back-up ring 2, wherein, described bearing chamber 1 symmetry is sleeved on the two ends of cylin-drical tooth roll shaft 5, described crushing teeth 3 is connected with the zone line of discaling roll axle 5 by key 6, the inwall of described crushing teeth 3 is provided with the keyway 4 with discaling roll axle 5 axially parallels, described key 6 parts place keyway 4, another part places in the groove on the discaling roll axle 5, be respectively equipped with an annular groove on the discaling roll axle 5 at described crushing teeth 3 two ends, the back-up ring 2 of described two semicircular structures is bolted and is fastened in the annular groove, and described back-up ring 2 is close to the two ends of crushing teeth 3.

The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. fixing device of crushing teeth, it is characterized in that, comprise bearing chamber (1), discaling roll axle (5), crushing teeth (3), key (6), keyway (4), back-up ring (2), wherein, described bearing chamber (1) symmetry is sleeved on the two ends of cylin-drical tooth roll shaft (5), described crushing teeth (3) is connected with the zone line of discaling roll axle (5) by key (6), the inwall of described crushing teeth (3) is provided with the keyway (4) with discaling roll axle (5) axially parallel, described key (a 6) part places keyway (4), another part places in the groove on the discaling roll axle (5), be respectively equipped with an annular groove on the discaling roll axle (5) at described crushing teeth (3) two ends, the back-up ring of described two semicircular structures (2) is bolted and is fastened in the annular groove, and described back-up ring (2) is close to the two ends of crushing teeth (3).