Finish rolling working roll device of hot-rolled strip rolling mill

Abstract

The utility model discloses a finish rolling working roll device of a hot rolling strip rolling mill, which comprises a lower working roll structure, the lower working roll structure comprises a lower transmission side bearing seat, a lower operation side bearing seat and a lower working roll main body, the lower operation side bearing seat is positioned on one side of the lower transmission side bearing seat, and the lower working roll main body is positioned on the other side of the lower operation side bearing seat. The lower working roll body is installed between the lower transmission side bearing seat and the lower operation side bearing seat, the lower transmission side bearing seat and the lower operation side bearing seat are each provided with a plurality of sets of supporting rolling wheels in a rotating mode, oil storage grooves are formed in the supporting rolling wheels, grease supplementing holes are formed in the supporting rolling wheels, and the grease supplementing holes are communicated with the oil storage grooves. The utility model relates to the field of design of finish rolling working roll devices, in particular to a finish rolling working roll device of a hot rolling strip rolling mill.

Description

Technical Field

[0001] The utility model relates to the field of finishing work roll device design, in particular to a finishing work roll device for a hot strip mill. Background Art

[0002] The figure below shows the support roller assembly for the chocks of the F1-F7 work rolls in the hot strip mill. During roll change, the upper and lower work rolls are supported on roller tracks by support rollers and driven forward or backward by the roll-changing trolley. To ensure linear motion on the tracks, one side of the rollers is designed as a V-shaped roller, achieving centering and linear motion on the V-shaped track.

[0003] The following problems exist during the use of the bearing seat support roller of the finishing work roll:

[0004] 1. The flat wheel and the inner bearing of the V-shaped wheel of the finishing rolling work roll bearing seat are easily damaged, and the work roll derailment occurs frequently, seriously affecting the roll changing efficiency.

[0005] 2. After the bearing inside the supporting roller is damaged, the friction between the flat wheel or V-shaped wheel and the track changes from rolling friction to sliding friction, the roller and track are severely worn, the service life is shortened, the maintenance difficulty and maintenance cost are increased, and the normal replacement of the working roll is affected. Utility Model Content

[0006] The technical problem to be solved by the utility model is that the working roller derailment phenomenon occurs frequently, which seriously affects the roller replacement efficiency, causes serious wear of the roller and the track, shortens the service life, and increases the maintenance difficulty and maintenance cost.

[0007] In order to solve the above problems, the technical solution adopted by the present invention is as follows: The present invention is a finishing working roll device of a hot-rolled plate and strip rolling mill, comprising a lower working roll structure, the lower working roll structure comprising a lower transmission side bearing seat, a lower operating side bearing seat and a lower working roll body, the lower operating side bearing seat is located on one side of the lower transmission side bearing seat, the lower working roll body is installed between the lower transmission side bearing seat and the lower operating side bearing seat, a plurality of groups of supporting rollers are respectively rotatably provided on the lower transmission side bearing seat and the lower operating side bearing seat, the supporting rollers are provided with an oil storage tank, the supporting rollers are provided with a grease filling hole, and the grease filling hole is connected to the oil storage tank.

[0008] Furthermore, the V-shaped roller guide angle of the support roller is 148°.

[0009] Furthermore, it also includes an upper working roll structure, which includes an upper transmission side bearing seat, an upper operating side bearing seat and an upper working roll body. The upper operating side bearing seat is located on one side of the upper transmission side bearing seat, and the upper working roll body is installed between the upper transmission side bearing seat and the upper operating side bearing seat.

[0010] Preferably, two sets of supporting rollers are used on each side at appropriate positions of the bearing seat, that is, eight sets of supporting rollers are used instead of the original four sets to bear the weight of the working roll system, while the roller size and bearing model remain unchanged, thereby reducing the load of a single set of supporting rollers by 50%.

[0011] Preferably, a double roller structure is adopted on one side of the bearing seat to increase the running stability of the working roll on the V-track, which can effectively avoid derailment when the working roll is changed at a high speed.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows: this design increases the number of supporting rollers by 1 times, the force on each roller is reduced by 50% compared with before the improvement, and the service life is increased from the original average of 2 months to 2 years; a single-sided double roller structure is adopted and the V-shaped roller guide angle is improved from 160° to 148°, which increases the guide stability and completely eliminates the derailment phenomenon when the working rolls are changed, greatly reducing its maintenance intensity and maintenance cost, and has great promotion value. An oil storage tank and grease holes are added to facilitate maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a finishing work roll device for a hot strip mill proposed in the present invention;

[0014] Figure 2 This is a top view of a finishing work roll device of a hot strip mill proposed in the present invention;

[0015] Figure 3 This is a structural schematic diagram of the support roller of the finishing work roll device of a hot strip rolling mill proposed by the utility model;

[0016] Figure 4 This is a structural schematic diagram of an oil storage tank and grease filling hole of a finishing work roll device of a hot strip rolling mill proposed by the utility model.

[0017] Among them, 1. Lower working roll structure, 2. Lower transmission side bearing seat, 3. Lower operating side bearing seat, 4. Lower working roll body, 5. Support roller, 6. Oil storage tank, 7. Grease filling hole, 8. Upper working roll structure, 9. Upper transmission side bearing seat, 10. Upper operating side bearing seat, 11. Upper working roll body. DETAILED DESCRIPTION

[0018] As the instruction manual Figures 1 to 4As shown, the utility model is a finishing working roll device of a hot-rolled plate and strip rolling mill, comprising a lower working roll structure 1, the lower working roll structure 1 comprising a lower transmission side bearing seat 2, a lower operating side bearing seat 3 and a lower working roll body 4, the lower operating side bearing seat 3 is located on one side of the lower transmission side bearing seat 2, the lower working roll body 4 is installed between the lower transmission side bearing seat 2 and the lower operating side bearing seat 3, a plurality of groups of supporting rollers 5 are respectively rotatably provided on the lower transmission side bearing seat 2 and the lower operating side bearing seat 3, the supporting rollers 5 are provided with an oil storage tank 6, the supporting rollers 5 are provided with a grease filling hole 7, and the grease filling hole 7 is connected to the oil storage tank 6.

[0019] As the instruction manual Figure 4 As shown, the V-shaped roller guide angle of the support roller 5 is 148°.

[0020] As the instruction manual Figure 1 As shown, it also includes an upper working roll structure 8, which includes an upper transmission side bearing seat 9, an upper operating side bearing seat 10 and an upper working roll body 11. The upper operating side bearing seat 10 is located on one side of the upper transmission side bearing seat 9, and the upper working roll body 11 is installed between the upper transmission side bearing seat 9 and the upper operating side bearing seat 10.

[0021] During maintenance, lubricating grease enters the roller bearing oil reservoir 6 through the grease-filling hole 7, ensuring optimal lubrication of the bearing. The single-sided dual-roller structure enhances the guiding stability of the support roller 5, and the V-roller guide angle is improved from 160° to 148°, increasing the stability of the V-roller on the V-track and completely eliminating roller derailment during work roll changes.

[0022] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A finishing roll device for a hot strip mill, characterized in that: It includes a lower working roll structure, which includes a lower transmission side bearing seat, a lower operating side bearing seat and a lower working roll body. The lower operating side bearing seat is located on one side of the lower transmission side bearing seat. The lower working roll body is installed between the lower transmission side bearing seat and the lower operating side bearing seat. The lower transmission side bearing seat and the lower operating side bearing seat are respectively provided with multiple groups of supporting rollers for rotation. The supporting rollers are provided with oil storage tanks. The supporting rollers are provided with grease filling holes, and the grease filling holes are connected to the oil storage tank.

2. The finishing roll device of a hot strip mill according to claim 1, characterized in that: The V-shaped roller guide angle of the support roller is 148°.

3. The finishing work roll device of a hot strip mill according to claim 2, characterized in that: It also includes an upper working roll structure, which includes an upper transmission side bearing seat, an upper operating side bearing seat and an upper working roll body. The upper operating side bearing seat is located on one side of the upper transmission side bearing seat, and the upper working roll body is installed between the upper transmission side bearing seat and the upper operating side bearing seat.

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