CN103084414A

CN103084414A - Hollow roll

Info

Publication number: CN103084414A
Application number: CN2013100194322A
Authority: CN
Inventors: 李春兴
Original assignee: Laiwu Iron and Steel Group Co Ltd
Current assignee: Laiwu Iron and Steel Group Co Ltd
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2013-05-08

Abstract

The invention discloses a hollow roll which comprises a roll shaft, end caps and a roll body, wherein the roll body is sleeved on the roll shaft, and two ends of the roll body are fixedly arranged on the roll shaft through the end caps. At least two support plates are fixedly arranged on the roll shaft, and the support plates are matched with the roll body in a gap mode. According to the hollow roll, at least two support plates are further additionally arranged between the roll shaft and the roll body to support the roll body. When a hollow roller bed is exerted large impacting loads or the roasting effect of high temperature steel slabs and a rolling mill in operation, under the support effect of the support plates, the deformation of the roll body of the hollow roll can be effectively avoided, and therefore the capacities of anti-impacting and bending deformation resistance are improved.

Description

A kind of hollow roll

Technical field

The present invention relates to a kind of conveyor roller, more particularly, relate to a kind of hollow roll.

Background technology

In continuous casting steel equipment, the roller-way that transports steel billet is seen everywhere, and the roller on roller-way mainly contains two kinds of solid roll and hollow rolls.As shown in Figure 1, solid roll 11 is to be formed by the filled circles steel, and this roller intensity is good, but weight is very heavy, and cost of manufacture is high.as shown in Figure 2, hollow roll is by the body of roll 21, roll shaft 22 and end cap 23 that diameter is less are made, this roller very light in weight, cost of manufacture is low, but roller intensity is relatively poor, for carrying high temperature billet steel or rolled piece, and the impact load hollow roller-way that rolls the district such as larger, the large and more high impact of operating ambient temperature due to impact load, easily cause hollow roller-way flexural deformation, and finally cause end cap and roll shaft, the weld seam of end cap and the body of roll snaps, and it is uneven and produce vibration and finally cause the series of problems such as damage of bearings to produce running after roller flexural deformation.

Therefore, how providing a kind of hollow roll that improves its shock resistance, counter-bending deformability, is the technical problem that those skilled in the art need to be resolved hurrily.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of hollow roll, with the shock resistance that improves self, counter-bending deformability.

For achieving the above object, the invention provides following technical scheme:

A kind of hollow roll comprises roll shaft, end cap and is set on described roll shaft, and two ends are fixed on the body of roll on described roll shaft by end cap, is fixed with at least two supporting disks on described roll shaft, and described supporting disk and described body of roll matched in clearance.

Preferably, in the hollow roll of said structure, described supporting disk is welded on described roll shaft.

Preferably, in the hollow roll of said structure, described supporting disk is symmetrically distributed on described roll shaft.

Preferably, in the hollow roll of said structure, have air-vent on described supporting disk.

Preferably, in the hollow roll of said structure, the quantity of described supporting disk is 3.

Preferably, in the hollow roll of said structure, have passage on described end cap.

Preferably, in the hollow roll of said structure, the quantity of described passage is 3.

Can find out from technique scheme, in hollow roll of the present invention, also set up at least two supporting disks between roll shaft and the body of roll, to support the body of roll.Be subject to greater impact load or high temperature billet steel in the running of hollow roller-way, the used time is done in the milling train baking, can effectively prevent the body of roll distortion of hollow roll under the supporting role of supporting disk, thereby improve the shock resistance of hollow roll, counter-bending deformability.

Description of drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The structural representation of the solid roll that Fig. 1 provides for prior art;

The structural representation of the hollow roll that Fig. 2 provides for prior art;

The structural representation of the hollow roll that Fig. 3 provides for the embodiment of the present invention.

Wherein, in Fig. 1 to Fig. 3:

01 is bearing block; 02 is bearing; 11 is solid roll; 21 is the body of roll; 22 is roll shaft; 23 is end cap; 3 is hollow roll; 31 is roll shaft; 32 is supporting disk; 33 is the body of roll; 34 is end cap.

The specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

The embodiment of the invention discloses a kind of hollow roll, with the shock resistance that improves self, counter-bending deformability.As shown in Figure 3, this hollow roll 3 comprises roll shaft 31, end cap 34 and is set on roll shaft 31, and two ends are fixed on the body of roll 33 on roll shaft 31 by end cap 34, is fixed with at least two supporting disks 32 on roll shaft 31, and supporting disk 32 and the body of roll 33 matched in clearance.

Hollow roll 3 in the embodiment of the present invention is also set up at least two supporting disks 32 between roll shaft 31 and the body of roll 33, to support the body of roll 33.Be subject to greater impact load or high temperature billet steel in hollow roll 3 roads runnings, the used time is done in the milling train baking, can effectively prevent the body of roll 33 distortion of hollow roll 3 under the supporting role of supporting disk 32, thereby improve the shock resistance of hollow roll 3, counter-bending deformability.After having overcome hollow roll 3 flexural deformations, generation is turned round unbalance vibration and is caused the series of problems such as bearing block 01 and bearing 02 damage

Wherein, the form that above-mentioned supporting disk 32 is fixed on roll shaft 31 has a lot, and then at first punching in the middle of supporting disk 32 is set in supporting disk 32 on roll shaft 31, at last supporting disk 32 is welded on roll shaft 31; Perhaps, supporting disk 32 interstitial holes and roll shaft 31 interference fit realize the fixing of supporting disk 32.Preferably, supporting disk 32 is welded on roll shaft 31, adopts this kind installation form to cut down finished cost.

Supporting disk 32 and the body of roll 33 matched in clearance, mainly to guarantee that the roll shaft 31 that installs supporting disk 32 is arranged in the body of roll 33 smoothly, in addition, supporting disk 32 can also guarantee that with the body of roll 33 matched in clearance there is certain distortion allowance in the body of roll 33, hollow roll 3 temperature sharply raise after hollow roll 3 high-speed cruisings, the existence in gap affects the body of roll 33 owing to expanding with heat and contract with cold and to produce distortion, owing to can prevent effectively that the body of roll 33 from protruding distortion.

Stressed evenly in order to guarantee roll shaft 31, when a plurality of supporting disk 32 was set, supporting disk 32 was symmetrically distributed on roll shaft 31.Preferred supporting disk 32 quantity are 3, and these 3 supporting disks 32 are evenly arranged on roll shaft 31 according to the length of roll shaft 31.

Have passage on end cap 34, the quantity of this passage can be any amount, preferably 3.Because the body of roll 33 inner airs circulations can reduce the temperature of hollow roll 3, thereby reduce the flexural deformation that brings due to hollow roll 3 internal-external temperature differences, and effectively solved end cap 34 and snap problem with roll shaft 31, end cap 34 with the weld seam of the body of roll 33.In order better to guarantee the body of roll 33 inner air circulations, also have air-vent on supporting disk 32.

In addition, the bearing block 01 of this hollow roller-way is worn grease lubricating system.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. a hollow roll, comprise roll shaft, end cap and be set on described roll shaft, and two ends are fixed on the body of roll on described roll shaft by end cap, it is characterized in that, is fixed with at least two supporting disks on described roll shaft, and described supporting disk and described body of roll matched in clearance.

2. hollow roll as claimed in claim 1, is characterized in that, described supporting disk is welded on described roll shaft.

3. hollow roll as claimed in claim 1, is characterized in that, described supporting disk is symmetrically distributed on described roll shaft.

4. hollow roll as claimed in claim 1, is characterized in that, has air-vent on described supporting disk.

5. hollow roll as described in claim 1 to 4 any one, is characterized in that, the quantity of described supporting disk is three.

6. hollow roll as claimed in claim 5, is characterized in that, has passage on described end cap.

7. hollow roll as claimed in claim 6, is characterized in that, the quantity of described passage is 3.