CN201127950Y

CN201127950Y - Bearing bracket device of rolling mill working roll

Info

Publication number: CN201127950Y
Application number: CNU200720016081XU
Authority: CN
Inventors: 迟爱敏; 王宪周; 洪立祥
Original assignee: China First Heavy Industries Co Ltd; CFHI Dalian Design and Research Institute Co Ltd
Current assignee: China First Heavy Industries Co Ltd; CFHI Dalian Design and Research Institute Co Ltd
Priority date: 2007-11-22
Filing date: 2007-11-22
Publication date: 2008-10-08
Anticipated expiration: 2017-11-22

Abstract

The utility model belongs to a working roll device of a rolling mill and particularly relates to a bearing support device of the working roll of the rolling mill of a finishing mill in the production line of a hot continuous mill. The bearing support device comprises a working roll, a rolling bearing and a bearing support and is characterized in that the shaft section positions at the two ends of each working roll correspond to each other, four rows of tapered roll bearings and double lane tapper roll bearings are arranged inside a shaft hole of each bearing support from the inner side to the outer side in sequence, the two sides of each bearing support are respectively provided with a sliding plate, the transmission lateral surface of each bearing support is respectively provided with a sliding board matching with the working roll to drive, the operating lateral surface of each bearing support is provided with a clamping plate which is driven by hydraulic pressure and is used for fixing the axial position of the working roll, the outer lateral surface of the bottom of the bearing support of the lower working roll is provided with a working roll changing mechanism. The working roll device not only has scientific and reasonable designed structure, but also can bear the radial force and the axial force perfectly, realizes that the rolls in pair can be changed rapidly; moreover, the working roll device had the advantages of high production efficiency, safe operation and convenient use, etc.

Description

The bearing holder device of operation roll of mill

Technical field

The utility model belongs to the working roll device of milling train, particularly the bearing holder device of a kind of operation roll of mill of the finishing mill in the continuous hot-rolling mill production line.

Background technology

At present, finishing mill on the continuous hot-rolling mill production line, extensive employing or four-high mill or two-roller mill, wherein the overwhelming majority adopts four-high mill, it is to adorn a pair of workroll bearing base device and a pair of back-up roll bearing base device on the horizontal support of four-roller type, each is made up of upper and lower working roll working roll, each workroll bearing base device is made up of working roll, rolling bearing, bearing block, the bearing block that working roll two ends shaft part is loaded on respectively on the horizontal support supports, and a four-row tapered roller bearing only is housed in each bearing block.The shortcoming and defect part of above-mentioned bearing holder device is:

1, because of a four-row tapered roller bearing, well bearing radial force and axial force only are housed in the bearing block.

2, no fast roll changing device.

3, because the bearing block of support works roll is cylinder iron made, can not bear alternate stress, and produce distortion, burn bearing with regard to causing bearing block to be out of shape big stuck roll bearing easily; And roll adopts cast iron materials to make, not only intensity, rigidity inadequately but also wearability lower, therefore, roller surface is peeled off.

Summary of the invention

The utility model is intended to the shortcoming and defect part that exists in above-mentioned technology, project organization is scientific and reasonable and provide not only, bearing radial force and axial force well, fast roll changing in couples again, and has a production efficiency height, handling safety is used a kind of bearing holder device of operation roll of mill very easily.

The purpose of this utility model is to adopt following technical scheme to realize: the bearing holder device of described operation roll of mill, the bearing seat of operation roll of mill device, comprise working roll, rolling bearing, bearing block, it is characterized in that: corresponding with each working roll two end axles fragment position, in the axis hole of each bearing block or install four-row tapered roller bearing in regular turn, double-row conical bearing, or four-row tapered roller bearing only is housed, the hydraulically powered clamp of installing mechanism on the front side of each bearing block, on the bottom frame of the bearing block of bottom working roll outside installation roller roll change mechanism.

Described hydraulically powered clamp mechanism, two clamp mechanisms respectively distribute in the both sides of bearing block fore side, described each clamp mechanism, form by hydraulic cylinder, clamp, guide finger, sliding tray, corresponding with the roller bearing position in the bearing block, the clamp of installing band sliding tray is inserted in the sliding tray of clamp the guide finger that is connected on the bearing block side on the bearing block side, is loaded on hydraulic cylinder on the frame and just drives clamp and slide into the roller bearing place and carry out block.

Described work roll changing mechanism, form by track, roller, roll change hook, the track that the symmetry installing parallels on the frame in the bearing block outside, the roller that is connected on the bearing block by bearing pin can move in orbit, one end of roll change hook is connected on the following bearing block, and the other end of roll change hook is connected with hauling machine.

Many in common knowledge, the working roll that milling train roll compacting is used is one of important components in the milling train, working roll is bearing the effect of the alternate stress that is caused by metal deformation resistance in the operation of rolling, and be in violent wear condition, be subjected to periodically variable thermal stress effect, thereby require roll to have higher intensity and wearability.Strain and shape and the Wei Zhi Wrong in the operation of rolling is poor for roll, the precision of stocking is had a direct impact, thereby require roll to have enough rigidity, intensity and manufacturing, installation accuracy.In order further to improve the utility model usability, wherein the bearing block to upper and lower working roll adopts intensity height, the little material of distortion to make, and selects for use as materials such as ZG35GrMo usually and makes; And the working roll of working roll adopts the intensity δ b 〉=400N/mm of its heart portion ², the material of body of roll quench-hardened case thickness 〉=35mm is made, and selects the roll as infinitely chilled ductile cast iron system usually for use, just guarantees that intensity, rigidity, wearability and the distortion of working roll and bearing holder device thereof is little.And in bearing block, adopt four-row tapered roller bearing and double-row conical bearing to distinguish bearing radial force and axial force.Slide plate all is equipped with in each bearing block both sides, biography is done on the side shaft holder to be used for cooperating the milling train axial moving device to realize that upper and lower working roll string is employed to the combined pressure plate and is improved template, axial force passed on the frame by bolt all the time when fore side bearing flange guaranteed milling train work, and all slide plate adopts seam to be located by connecting.Combine the above technical measures of being taked, realize this purpose of this utility model.

Compared with prior art, the utility model not only project organization is scientific and reasonable, bearing radial force and axial force well, and fast roll changing in couples again, and have the production efficiency height, handling safety is used advantages such as very convenient.

Description of drawings

The utility model has three width of cloth accompanying drawings.Wherein:

Accompanying drawing 1 is the main TV structure schematic diagram of specific embodiment of the utility model.

Accompanying drawing 2 is vertical views of Fig. 1.

Accompanying drawing 3 is side views of Fig. 1.

Among the figure: 1, working roll, 2, bearing block, 3, four-row tapered roller bearing, 4, double-row conical bearing, 5, track, 6, roller, 7, clamp mechanism, 8, the roll change hook, 9, clamp, 10, hydraulic cylinder, 11, guide finger, 12, chute.

The specific embodiment

Be specific embodiment of the utility model shown in Fig. 1,2,3, it is the bearing holder device of the working roll of the four-high mill on the finishing mill in the continuous hot-rolling mill production line; It comprises working roll 1, rolling bearing, bearing block 2, it is characterized in that: corresponding with each working roll 1 two end axles fragment position, in the axis hole of each bearing block 2, install four-row tapered roller bearing 3, double-row conical bearing 4 in regular turn, two clamp mechanisms 7 respectively distribute in the both sides of the front side of each bearing block 2, described each clamp mechanism 7, form by hydraulic cylinder 10, clamp 9, guide finger 11 and chute 12, in the work roll changing mechanism that the frame outside installing of the bottom of the bearing block 2 of bottom working roll 1 is made up of track 5, roller 6, roll change hook 8.

The above; it only is the preferable specific embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; all are familiar with those skilled in the art in the disclosed technical scope of the utility model, are equal to replace or change according to the design of the technical solution of the utility model and this utility model thereof all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of bearing seat of operation roll of mill device, comprise working roll (1), rolling bearing, bearing block (2), it is characterized in that: corresponding with each working roll (1) two end axles fragment position, in the axis hole of each bearing block (2) or install four-row tapered roller bearing (3), double-row conical bearing (4) in regular turn, or four-row tapered roller bearing (3) only is housed, installing hydraulically powered clamp mechanism (7) on the front side of each bearing block (2), on the bottom frame of the bearing block (2) of bottom working roll (1) outside installation roller roll change mechanism.

2, by the described bearing seat of operation roll of mill device of claim 1, it is characterized in that: described hydraulically powered clamp mechanism (7), two clamp mechanisms respectively distribute in the both sides of bearing block (2) fore side, described each clamp mechanism, by hydraulic cylinder (10), clamp (9), guide finger (11), chute (12) is formed, corresponding with the roller bearing position in the bearing block (2), the clamp (9) of installing band chute on bearing block (2) side, the guide finger (11) that is connected on bearing block (2) side is inserted in the chute of clamp (9), be loaded on hydraulic cylinder (10) on the frame and just drive clamp (9) and slide into the roller bearing place and carry out block.

3, press the bearing holder device of the described operation roll of mill of claim 1, it is characterized in that: described work roll changing mechanism, form by track (5), roller (6), roll change hook (8), the track (5) that the symmetry installing parallels on the frame in the bearing block outside, the roller (6) that is connected on the bearing block (2) by bearing pin can move on track (5), one end of roll change hook (8) is connected on the following bearing block (2), and the other end of roll change hook (8) is connected with hauling machine.