CN220835840U

CN220835840U - Roller skin fixing structure of toothed roller crusher

Info

Publication number: CN220835840U
Application number: CN202322538631.6U
Authority: CN
Inventors: 孔涛; 苗冰冰
Original assignee: Luoyang Rec Cycle Utilization Technology Co ltd
Current assignee: Luoyang Rec Cycle Utilization Technology Co ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-04-26
Anticipated expiration: 2033-09-19

Abstract

A roller skin fixing structure of a toothed roller crusher comprises a roller shaft and a split roller skin fixed on the roller shaft; a plurality of outer dovetail grooves which are axially communicated are arranged on the roller surface of the roller shaft in an array manner along the circumferential direction; at least one inner dovetail groove which is axially communicated is arranged on the inner cambered surface of the split roller skin; the roller skin fixing structure further comprises a double-dovetail key bar and an end face limiting block; the double-dovetail key bar is arranged between the outer dovetail groove and the inner dovetail groove and is used for attaching the inner cambered surface of the split roller leather to the roller surface of the roller shaft; the end face limiting blocks are arranged at two ends of the double-dovetail key strip and used for limiting the axial freedom degree of the split roller leather. Because the radial bolts for fixing the split roller sheet do not exist in the working surface, the roller sheet fixing structure fundamentally solves the problems that the bolts are difficult to detach and easy to loosen. In addition, this roller skin fixed knot constructs not only easily realizes the change of components of a whole that can function independently roller skin, can play the effect of protection to the breaker moreover.

Description

Roller skin fixing structure of toothed roller crusher

Technical Field

The utility model relates to the field of crushers, in particular to a roller skin fixing structure of a toothed roller crusher.

Background

The toothed roller crusher is widely applied to industries such as coal, metallurgy, mine, chemical industry, building materials and the like. The tooth roller crusher has tooth roller comprising roller shaft and roller skin with teeth distributed. Because the roller skin is a workpiece directly involved in crushing materials, the roller teeth are severely worn or broken, so the roller skin needs to be replaced periodically.

The existing roller skin has two structural forms, one is of an annular integral structure, and the other is of an arc split structure. The roller skin with the annular integral structure has the advantages of good integrity, easy installation and capability of being fixedly installed on the roller shaft through the end-to-end bolts; the defect is that when broken teeth appear, the roll sheet needs to be replaced integrally, and the cost is high. The roller skin with the arc-shaped split structure has the advantages that when broken teeth appear, only the split roller skin with the broken teeth needs to be replaced, so that the cost is low; the split roller skin has the defects that the split roller skin needs to be fixed on a roller shaft by using radial bolts, and the following problems exist in the fixing mode:

1. because the radial bolts are positioned in the working surface, the hexagon heads of the bolts are easily rounded by materials, so that the split roller sheet is difficult to detach.

2. In the work, radial bolts are easy to loose, and the split roller skin can be fallen off seriously.

In view of the above, there is a need for improved fixing structures of split roll covers on roll shafts.

Disclosure of utility model

In order to overcome the defects in the background technology, the utility model discloses a roller skin fixing structure of a toothed roller crusher, which adopts the following technical scheme:

A roller skin fixing structure of a toothed roller crusher comprises a roller shaft and a split roller skin fixed on the roller shaft; a plurality of outer dovetail grooves which are axially communicated are arranged on the roller surface of the roller shaft in an array manner along the circumferential direction; at least one inner dovetail groove which is axially communicated is arranged on the inner cambered surface of the split roller skin; the roller skin fixing structure further comprises a double-dovetail key bar and an end face limiting block; the double-dovetail key bar is arranged between the outer dovetail groove and the inner dovetail groove and is used for attaching the inner cambered surface of the split roller leather to the roller surface of the roller shaft; the end face limiting blocks are arranged at two ends of the double-dovetail key strip and used for limiting the axial freedom degree of the split roller leather.

After the technical scheme is implemented, the following beneficial effects can be generated:

1. The working surface is not provided with bolts for fixing the split roller sheets, so that the problems that the bolts are difficult to disassemble and are easy to loosen are fundamentally solved.

2. The double-dovetail key bar has a protection effect on the crusher, and when the crushing condition occurs, the double-dovetail key bar can be sheared by torque, so that the roll shaft idles.

3. The split roller skin is easy to replace.

According to the technical scheme, threaded holes are formed in two ends of the double-dovetail key bar, connecting holes are formed in end face limiting blocks, and the end face limiting blocks are arranged at two ends of the double-dovetail key bar through bolts; one end of the end face limiting block is pressed on the roll shaft, and the other end of the end face limiting block is pressed on the split roll skin.

According to the technical scheme, studs are arranged at two ends of the double-dovetail key bar, connecting holes are formed in end face limiting blocks, and the end face limiting blocks are arranged at two ends of the double-dovetail key bar through nuts; one end of the end face limiting block is pressed on the roll shaft, and the other end of the end face limiting block is pressed on the split roll skin.

Further improving the technical scheme, the length of the double-dovetail key bar is smaller than the axial length of the split roller skin.

After the technical scheme is implemented, the beneficial effects are that: one end of the end face limiting block can be pressed on the roll shaft, and the other end of the end face limiting block is pressed on the split roll skin, so that the split roll skin, the double-dovetail key bar and the roll shaft are fixed together.

Further improving the technical scheme, the outer dovetail groove and the inner dovetail groove have the same size.

After the technical scheme is implemented, the beneficial effects are that: the interchangeability of the double-dovetail key strip is improved, and the processing difficulty of the outer dovetail groove and the inner dovetail groove is reduced.

Drawings

Fig. 1 is a schematic perspective view of the roller skin fixing structure.

Fig. 2 shows an exploded view of fig. 1.

Fig. 3 shows a schematic structural view of the roller shaft.

Fig. 4 shows a schematic structural view of a split roll skin.

FIG. 5 shows a schematic configuration of a double-dove-tail key bar.

Fig. 6 shows a schematic structure of the end face stopper.

In the figure:

1. A roll shaft; 1.1, an outer dovetail groove;

2. split roll skin; 2.1, an inner dovetail groove; 2.2, roller teeth;

3. A double-dovetail key bar;

4. An end surface limiting block;

5. And (5) a bolt.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. It should be noted that, in the description of the present utility model, terms such as "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. It should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

As shown in fig. 1-2, a roller skin fixing structure of a toothed roller crusher comprises a roller shaft 1, four split roller skins 2 fixed on the roller shaft 1, a double-dovetail key bar 3 and an end surface limiting block 4, and the structure and the function of the roller skin fixing structure are specifically described below.

Refer to fig. 3. Eight through outer dovetail grooves 1.1 are arranged on the roller surface of the roller shaft 1 in a circumferential array, and the outer dovetail grooves 1.1 are arranged along the axial direction of the roller surface.

Refer to fig. 4. Two inner dovetail grooves 2.1 which are axially communicated are arranged on the inner cambered surface of the split roller leather 2, and two rows of roller teeth 2.2 are arranged on the outer cambered surface of the split roller leather 2 in an array mode.

Refer to fig. 5. The double-dovetail key strip 3 has a lower trapezoidal portion that matches the outer dovetail groove 1.1 and also has an upper trapezoidal portion that matches the inner dovetail groove 2.1. The double-dovetail key bar 3 is used for fixing the split roller leather 2 on the roller surface of the roller shaft 1; the second is to transmit torque; thirdly, the protection effect is achieved on the crusher, and when the extrusion situation occurs, the double-dovetail key strips 3 can be sheared by torque, so that the roll shaft 1 idles.

In this embodiment, the outer dovetail groove 1.1 and the inner dovetail groove 2.1 have the same size, and the lower trapezoid part and the upper trapezoid part of the double-dovetail key bar 3 have a symmetrical structure. The length of the double-dovetail key strip 3 is slightly smaller than the axial length of the split roller leather 2, and threaded holes are formed in two ends of the double-dovetail key strip 3.

Refer to fig. 6. The end face stopper 4 is provided with a connection hole, and a bolt 5 is inserted into the connection hole. The end surface limiting block 4 is used for limiting the axial freedom degree of the split roll cover 2.

Referring to fig. 1-2. During installation, the lower trapezoid part of the double-dovetail key strip 3 is inserted into the outer dovetail groove 1.1 in the axial direction, and then the split roller leather 2 is inserted into the upper trapezoid part of the double-dovetail key strip 3 in the axial direction, so that the inner cambered surface of the split roller leather 2 is attached to the roller surface of the roller shaft 1. Finally, the end face limiting blocks 4 are arranged at two ends of the double-dovetail key bar 3 through the threaded connection of the bolts 5 and the threaded holes, one end of each end face limiting block 4 is pressed on the roll shaft 1, the other end of each end face limiting block is pressed on the split roll skin 2, and the split roll skin 2, the double-dovetail key bar 3 and the roll shaft 1 are fixed together. Since the bolt 5 is mounted on the end face (non-working face) of the toothed roller, the bolt 5 is very little stressed during working, and no abrasion and loosening occur.

It should be noted that studs may be disposed at two ends of the double-dovetail key bar 3, and the end face limiting block 4 may be mounted at two ends of the double-dovetail key bar 3 by screwing a nut and the studs.

From the above, the radial bolts for fixing the split roller sheet 2 are not existed in the working surface of the roller sheet fixing structure, so that the problems of difficult disassembly and easy loosening of the bolts are fundamentally solved. In addition, this roller skin fixed knot constructs not only easily realizes the change of components of a whole that can function independently roller skin 2, can play the effect of protection to the breaker moreover.

The parts not described in detail are prior art. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a tooth roller crusher's roller skin fixed knot constructs, includes the roller and fixes the epaxial components of a whole that can function independently roller skin, characterized by: a plurality of outer dovetail grooves which are axially communicated are arranged on the roller surface of the roller shaft in an array manner along the circumferential direction; at least one inner dovetail groove which is axially communicated is arranged on the inner cambered surface of the split roller skin; the roller skin fixing structure further comprises a double-dovetail key bar and an end face limiting block; the double-dovetail key bar is arranged between the outer dovetail groove and the inner dovetail groove and is used for attaching the inner cambered surface of the split roller leather to the roller surface of the roller shaft; the end face limiting blocks are arranged at two ends of the double-dovetail key strip and used for limiting the axial freedom degree of the split roller leather.

2. The roll skin fixing structure of a toothed roll crusher as set forth in claim 1, wherein: screw holes are formed in two ends of the double-dovetail key bar, connecting holes are formed in the end face limiting blocks, and the end face limiting blocks are arranged at two ends of the double-dovetail key bar through bolts; one end of the end face limiting block is pressed on the roll shaft, and the other end of the end face limiting block is pressed on the split roll skin.

3. The roll skin fixing structure of a toothed roll crusher as set forth in claim 1, wherein: studs are arranged at two ends of the double-dovetail key bar, connecting holes are formed in the end face limiting blocks, and the end face limiting blocks are arranged at two ends of the double-dovetail key bar through nuts; one end of the end face limiting block is pressed on the roll shaft, and the other end of the end face limiting block is pressed on the split roll skin.

4. A roller skin fixing structure of a toothed roller crusher as claimed in claim 2 or 3, characterized in that: the length of the double-dovetail key strip is smaller than the axial length of the split roller leather.

5. The roll skin fixing structure of a toothed roll crusher as set forth in claim 1, wherein: the outer dovetail groove has the same dimensions as the inner dovetail groove.