CN116765139A - Stable adjusting device for roll system of six-high mill - Google Patents

Abstract

The application discloses a stable adjustment device for a roll system of a six-roller rolling mill, which relates to the technical field of strip steel cold rolling production and comprises a frame, a six-roller mechanism, a roll bending mechanism and a stabilizing mechanism, wherein the six-roller mechanism comprises an upper supporting roller, a lower supporting roller, an upper middle roller, a lower middle roller, an upper working roller and a lower working roller, the upper middle roller and the lower middle roller have a set offset compared with other rollers, the roll bending mechanism comprises middle roll bending blocks arranged at the inlet side and the outlet side of the upper middle roller and the lower middle roller, the sum of clearance values of bearing seats of the upper middle roller and the lower middle roller and the middle roll bending blocks at the inlet side and the outlet side of the upper middle roller and the lower middle roller is twice the set offset, the stabilizing mechanism comprises a stabilizing hydraulic cylinder positioned at the inlet operation side, the inlet transmission side, the outlet operation side and the outlet transmission side of the upper middle roller and the lower middle roll bending blocks at corresponding positions, and the stroke distance of the stabilizing hydraulic cylinder is more than twice the set offset. The gap between the bearing seat of the six-high rolling mill roller system and the frame window is eliminated, and the reversible stable rolling of the six-high rolling mill is realized.

Description

Stable adjusting device for roll system of six-high mill

Technical Field

The application relates to the technical field of strip steel cold rolling production, in particular to a roller system stable adjusting device of a six-roller mill.

Background

The six-roller rolling mill roller system consists of an upper working roller, a lower working roller, an upper middle roller, a lower middle roller, an upper supporting roller and a lower supporting roller. In general, in order to facilitate replacement of the chocks of these rolls, a certain gap is left between the chocks and the frame window, and in order to keep the six-roll cold-rolling mill roll train stable during rolling, a fixed horizontal constraint is required for the roll train.

In order to avoid the influence of the fluctuation of tension and the change of inertia force generated by acceleration and deceleration on the stability of the roller system, the middle roller has an offset e relative to the supporting roller and the working roller. The offset e of the intermediate roll is fixed in the strip steel trend in the continuous rolling unit, but in the reversible cold rolling, the strip steel trend is converted back and forth, if the offset e of the intermediate roll is still fixed, the deformation of the working roll in a certain direction is larger due to different stress states of the working roll in the back and forth rolling process, and the rolling quality is affected.

Disclosure of Invention

The application provides a roll system stability adjusting device of a six-roller mill, which solves the technical problems of roll system stability and middle roll offset direction in a single-frame cold rolling process in the prior art.

The application provides a six-roller rolling mill roller system stable adjusting device, which comprises a frame, a six-roller mechanism, a roller bending mechanism and a stable mechanism, wherein the six-roller mechanism is arranged on the frame and comprises an upper supporting roller, a lower supporting roller, an upper middle roller, a lower middle roller, an upper working roller, a lower working roller and corresponding bearing blocks, the upper middle roller and the lower middle roller have a set offset compared with other rollers, the roller bending mechanism is arranged on the frame and comprises middle roller bending blocks which are correspondingly arranged at the inlet side and the outlet side of the upper middle roller and the lower middle roller, the sum of the gap values of the bearing blocks of the upper middle roller and the lower middle roller and the gap value of the middle roller bending block at the inlet side and the outlet side of the upper middle roller is twice, the stable mechanism comprises a stable hydraulic cylinder which is positioned at the inlet operation side, the inlet transmission side, the outlet operation side and the outlet transmission side of the upper middle roller and the lower working roller, and the corresponding bearing blocks of each roller, and the stroke distance of the stable hydraulic cylinder is more than twice the set offset, wherein the cylinder rod of the stable hydraulic cylinder is abutted against the inlet side of the corresponding bearing blocks, so that the outlet side of the bearing blocks is abutted against the inlet side of the corresponding bearing blocks, the middle roller bending blocks is abutted against the inlet side of the corresponding to the middle roller bending blocks, and the E side of the middle roller blocks is abutted against the corresponding to the roller bending blocks, or the middle roller blocks, and the roller blocks is abutted against the corresponding to the roller blocks.

In some embodiments, the six-high rolling mill roll train stability adjustment device further includes a backup roll hydraulic cylinder mounted on the frame, the backup roll hydraulic cylinder for moving the upper backup roll up and down.

In some embodiments, the roller bending mechanism comprises a work roller bending block correspondingly arranged at the inlet side and the outlet side of the upper work roller and the lower work roller, the work roller bending block is connected with a positive roller cylinder and a negative roller cylinder, and the roller cylinders are used for enabling the corresponding work rollers to move up and down so as to assist in forming an intermediate roller reversing space for telescopic movement of the stabilizing hydraulic cylinder.

In some embodiments, the end of the cylinder rod of the stabilizing hydraulic cylinder is provided with a wear-resistant top cover, through which the cylinder rod abuts against the intermediate roll bending block.

In some embodiments, the cylinder rod is removably connected to the wear cap.

In some embodiments, the stabilizing cylinder is comprised of a single cylinder or two or more cylinders.

In some embodiments, the intermediate roll bending block is movably arranged in the frame in a direction of the operating side directed to the drive side.

In some embodiments, the stabilizing cylinder presses the intermediate roller bearing housing against the E-block of the frame to eliminate a gap between the intermediate roller bearing housing and the frame, depending on the intermediate roller offset direction, while the intermediate roller offset direction remains unchanged.

In some embodiments, the six-high rolling mill roll train stabilization adjustment apparatus further includes, as required by rolling, shifting the intermediate roll offset direction while stabilizing the roll train by fixing the intermediate roll chock gap.

In some embodiments, in the frame, an upper backup roll, an upper intermediate roll, an upper work roll, a lower intermediate roll, and a lower backup roll are disposed in sequence from top to bottom.

The application has the following beneficial effects: the stabilizing mechanism comprises stabilizing hydraulic cylinders positioned on an inlet operation side, an inlet transmission side, an outlet operation side and an outlet transmission side of the upper middle roller and the lower middle roller, wherein the stabilizing hydraulic cylinders are connected with middle roller bending blocks at corresponding positions, and the stroke distance of the stabilizing hydraulic cylinders is more than twice of the set offset; the device is characterized in that the cylinder rod of the stabilizing hydraulic cylinder positioned at the inlet side is abutted against the inlet side of a corresponding bearing seat, so that the outlet side of the bearing seat is abutted against a corresponding middle roll bending block and the middle roll bending block is abutted against an E-shaped block fixed on the outlet side of a machine frame, or the cylinder rod of the stabilizing hydraulic cylinder positioned at the outlet side is abutted against the outlet side of a corresponding bearing seat, so that the inlet side of the bearing seat is abutted against a corresponding middle roll bending block and the middle roll bending block is abutted against an E-shaped block fixed on the inlet side of the machine frame; therefore, firstly, the clearance between the bearing seat of the six-roller mill roller system and the window of the stand is eliminated, the stable rolling function of the roller system is realized, and secondly, the offset direction of the middle roller, the supporting roller and the working roller can be changed, so that the offset direction of the middle roller is changed according to the running direction of strip steel, and the reversible stable rolling of the six-roller mill is realized.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application.

FIG. 1 is a front view of a six-high roll train stability adjustment apparatus according to the present application;

FIG. 2 is an enlarged view of a portion of a roll system stability adjustment apparatus for a six-high rolling mill according to the present application;

FIG. 3 is a schematic view of the structure of an upper intermediate roll in a roll system stability adjustment device for a six-high rolling mill according to the present application;

fig. 4 is a schematic structural view of an upper middle roll bending block in a roll system stability adjusting device of a six-high rolling mill.

The drawings are marked: the device comprises a 1-upper middle roller inlet operation side stabilizing hydraulic cylinder, a 1-1-cylinder rod, a 1-2-wear-resistant top cover, a 2-upper middle roller outlet operation side stabilizing hydraulic cylinder, a 3-lower middle roller inlet operation side stabilizing hydraulic cylinder, a 4-lower middle roller outlet operation side stabilizing hydraulic cylinder, a 5-upper middle roller inlet transmission side stabilizing hydraulic cylinder, a 9-support roller hydraulic cylinder, a 10-middle roller bending block, a 10-1-upper middle roller inlet side bending block, a 10-2-upper middle roller outlet side bending block, a 10-3-upper middle roller positive bending cylinder, a 11-working roller bending block, a 12-lower working roller, a 13-lower middle roller, a 14-lower support roller and a 15-E type block.

Detailed Description

Referring to fig. 1, the embodiment discloses a stabilizing and adjusting device for a roll system of a six-high rolling mill, which comprises a frame, a six-high mechanism, a roll bending mechanism and a stabilizing mechanism, wherein the six-high mechanism and the roll bending mechanism are both arranged on the frame. As shown in fig. 1, the six-roller mechanism includes upper and lower backup rollers, upper and lower intermediate rollers and upper and lower work rollers, and bearing seats corresponding to the respective rollers, and the upper backup roller, upper intermediate roller, upper work roller, lower work roller 12, lower intermediate roller 13 and lower backup roller 14 are sequentially provided from top to bottom.

Typically, to facilitate replacement of the chocks of the rolls, a gap is left between the chocks and the frame window. In the present embodiment, the upper intermediate roller has an offset amount, which is referred to as a set offset amount, as compared to the backup roller and the work roller; in this case, the upper intermediate roller also has the set offset compared to the backup roller and the work roller. Referring to fig. 1 and 2, the set offset is indicated by symbol e.

In a six-high mill, the left side in fig. 1 is the inlet side and the right side is the outlet side from the viewpoint of the strip pass line and strip run illustrated in fig. 1; the rolling mill also has opposite operating and driving sides, wherein fig. 1 is a graph from the operating side perspective, the operating side being outside the paper plane of fig. 1 and the driving side being inside the paper plane of fig. 1.

The roller bending mechanism is mounted on the frame, and includes a middle roller bending block 10, and the middle roller bending block 10 is disposed corresponding to the upper middle roller and the lower middle roller, and can be disposed at an inlet side of the upper middle roller, an outlet side of the upper middle roller, an inlet side of the lower middle roller, and an outlet side of the lower middle roller in detail with reference to fig. 1. As shown in fig. 4, an upper intermediate roll inlet side roll block 10-1 and an upper intermediate roll outlet side roll block 10-2 are illustrated, and an upper intermediate roll positive roll cylinder 10-3 is provided in the upper intermediate roll block.

In the present embodiment, the bearing housings of the upper and lower intermediate rolls are defined. The above bearing blocks of the intermediate rolls are exemplified by the intermediate roll bending block 10 on the inlet side of the upper intermediate roll and the intermediate roll bending block 10 on the outlet side of the upper intermediate roll, the bearing block of the upper intermediate roll being located between the two intermediate roll bending blocks 10, a gap being formed between the bearing block of the upper intermediate roll and the intermediate roll bending block 10 on the inlet side, another gap being formed between the bearing block of the upper intermediate roll and the intermediate roll bending block 10 on the outlet side, the sum of the gap values of the two gaps being a constant value, which is set to be equal to twice the set offset value. Similarly, for the lower intermediate roll, the sum of the gap values of the bearing housing of the lower intermediate roll and the intermediate roll bending block 10 on the inlet side and the outlet side of the roll is twice the set offset.

The stabilizing mechanism comprises stabilizing hydraulic cylinders, the inlet operation side, the inlet transmission side, the outlet operation side and the outlet transmission side of the upper middle roller are all provided with the stabilizing hydraulic cylinders, and the inlet operation side, the inlet transmission side, the outlet operation side and the outlet transmission side of the lower middle roller are also all provided with the stabilizing hydraulic cylinders. As illustrated in fig. 1, an upper intermediate roll inlet operation side stabilizing hydraulic cylinder 1, an upper intermediate roll outlet operation side stabilizing hydraulic cylinder 2, a lower intermediate roll inlet operation side stabilizing hydraulic cylinder 3, and a lower intermediate roll outlet operation side stabilizing hydraulic cylinder 4.

In the present embodiment, the intermediate roll bending block 10 can be divided into an inlet side and an outlet side, and the intermediate roll bending block 10 is arranged along the direction of the transmission side toward the operation side. The direction of the operating side pointing to the transmission side is a first direction, and the middle roll bending block 10 is movably arranged in the frame along the first direction. It is provided that the stabilizing cylinders are connected to the associated intermediate roll bending block 10, the cylinder rods 1-1 of which are movable back and forth in relation to the bending block, and "associated" is herein interpreted as corresponding positions, for example, that the stabilizing cylinders on the inlet operating side are connected to the intermediate roll bending block 10 on the inlet side, which connection positions are close to the operating side.

In the present embodiment, the stroke distance of the steady hydraulic cylinder is indicated by the symbol s in fig. 1 and 2, s being set to a set offset value greater than two times, i.e., s > 2e.

In some embodiments, the six-high rolling mill roll system stabilizing adjustment device further includes a support roll hydraulic cylinder 9, referring to fig. 1, the support roll hydraulic cylinder 9 is mounted on the frame, the support roll hydraulic cylinder 9 is used for moving the upper support roll up and down, pulling the upper support roll away from the upper middle roll, and providing a space condition for the stabilizing hydraulic cylinder to drive the middle roll to laterally shift, which can be described as a part of the middle roll reversing space.

In some embodiments, referring to fig. 1 to 4, the roll bending mechanism includes a work roll bending block 11, the work roll bending block 11 is disposed on an inlet side of an upper work roll, an outlet side of the upper work roll, an inlet side of a lower work roll 12, and an outlet side of the lower work roll 12, and the work roll bending block 11 is connected with positive and negative bending cylinders. The positive bending roller cylinder and the negative bending roller cylinder are used in the formal production of strip steel cold rolling, and can also downwards move the upper working roller when the six-roller mill roller system is stably regulated based on the device, so that a space condition is provided for the stable hydraulic cylinder to drive the middle roller to transversely deviate, and the stable hydraulic cylinder can also be described as a part of a middle roller reversing space so as to realize telescopic movement.

In some embodiments, referring to fig. 2, a wear-resistant top cover 1-2 is connected to the end of a cylinder rod 1-1 of the stabilizing hydraulic cylinder, the cylinder rod 1-1 is abutted against a middle roll bending block 10 through the wear-resistant top cover 1-2, and the cylinder rod 1-1 is protected by arranging the wear-resistant top cover 1-2. The wear-resistant top cover 1-2 and the cylinder rod 1-1 adopt a detachable connection mode, and the long-term operation of the device and the protection of the hydraulic cylinder can be maintained by replacing the wear-resistant top cover 1-2.

The inlet operation side, the inlet transmission side, the outlet operation side and the outlet transmission side of the upper and lower intermediate rolls are provided with the stabilizing cylinders, wherein the stabilizing cylinders on any side can be in the form of a single hydraulic cylinder, a combination of two hydraulic cylinders or a combination of more than two hydraulic cylinders, and the stabilizing cylinders are not limited to the form of a single hydraulic cylinder.

Based on the above-mentioned six-roller mill roller system stabilization adjusting device, when middle roller offset direction keeps unchanged, stabilize the roller system through fixed middle roller bearing seat clearance, according to middle roller offset direction, stabilize the pneumatic cylinder and press middle roller bearing seat and lean on the frame, eliminate the clearance between middle roller bearing seat and the frame.

The above middle roll is exemplified, the upper middle roll is biased to the outlet side direction, the upper middle roll inlet operation side stabilizing hydraulic cylinder 1 and the upper middle roll inlet transmission side stabilizing hydraulic cylinder 5 extend, the upper middle roll outlet operation side stabilizing hydraulic cylinder 2 and the upper middle roll outlet transmission side stabilizing hydraulic cylinder are in a retracted state, the upper middle roll inlet operation side stabilizing hydraulic cylinder 1 and the upper middle roll inlet transmission side stabilizing hydraulic cylinder 5 keep synchronous action, the wear-resistant top cover 1-2 at the front end of the hydraulic cylinder rod 1-1 is abutted against the bearing seat inlet sides at the two ends of the upper middle roll, the bearing seat outlet sides at the two ends of the upper middle roll are abutted against the upper middle roll outlet side bending block 10-2, the upper middle roll outlet side bending block 10-2 is abutted against the E-shaped block 15 fixed on the rolling mill stand, and finally the fixed working state of the middle roll bearing seat in the strip steel trend direction is realized; the above intermediate rolls are described in terms of distance, and the lower intermediate roll 13 operates on the same principle as the upper intermediate roll.

In the above description, if the intermediate roller shift direction is opposite, the actions are opposite.

Based on the six-roller mill roller system stabilizing and adjusting device, when the offset direction of the intermediate roller is changed according to the rolling requirement, the roller system is stabilized through fixing the clearance of the bearing seat of the intermediate roller.

In the case where the intermediate roll is initially biased toward the strip inlet side, the stabilizing cylinder presses the intermediate roll bearing block against the frame when the intermediate roll is biased in this direction, thereby eliminating the gap between the intermediate roll bearing block and the frame.

When the middle roll deviates from the direction of the strip steel to the outlet, the roll system is opened, namely the supporting roll hydraulic cylinder 9 moves upwards, the upper supporting roll moves upwards, the upper working roll moves downwards just to make the upper working roll move downwards, the middle roll reversing space is reserved, then the upper middle roll inlet operation side stabilizing hydraulic cylinder 1 and the upper middle roll inlet transmission side stabilizing hydraulic cylinder 5 retract, the roll system is pressed together, the upper middle roll outlet operation side stabilizing hydraulic cylinder 2 and the upper middle roll outlet transmission side stabilizing hydraulic cylinder are in an extending state, the upper middle roll inlet operation side stabilizing hydraulic cylinder 1 and the upper middle roll inlet transmission side stabilizing hydraulic cylinder 5 keep synchronous action, the upper middle roll outlet operation side stabilizing hydraulic cylinder 2 and the upper middle roll outlet transmission side stabilizing hydraulic cylinder keep synchronous action, the bearing blocks at the two ends of the middle roller are adjusted to the state that the front end wear-resistant covers of the levers of the stabilizing hydraulic cylinder at the outlet side are abutted against the inlet sides of the bearing blocks at the two ends of the upper middle roller, the outlet sides of the bearing blocks at the two ends of the upper middle roller are abutted against the outlet bending blocks, and the outlet bending blocks are abutted against E-shaped blocks 15 fixed on the rolling mill frame, so that the rolling state of the bearing blocks of the middle roller in the strip steel trend direction is finally realized.

The above intermediate rolls are exemplified, and the lower intermediate roll 13 operates on the same principle as the upper intermediate roll.

In summary, in the roll system stability adjustment device for a six-high rolling mill provided in this embodiment, under the combined action of the stability hydraulic cylinder and other structures, the rolling mill is adjusted to: the cylinder rod 1-1 of the stabilizing cylinder located on the inlet side abuts against the inlet side of the corresponding bearing housing so that the outlet side of the bearing housing abuts against the corresponding intermediate roll bending block 10 and the intermediate roll bending block 10 abuts against the E-block 15 fixed to the outlet side of the frame; or adjusting the rolling mill to: the cylinder rod 1-1 of the stabilizing cylinder located on the outlet side abuts against the outlet side of the corresponding bearing housing so that the inlet side of the bearing housing abuts against the corresponding intermediate roll bending block 10 and the intermediate roll bending block 10 abuts against the E-block 15 fixed to the inlet side of the frame.

Through the embodiment, firstly, the gap between the bearing seat of the six-roller mill roller system and the window of the stand can be eliminated, the stable rolling function of the roller system is realized, secondly, the offset direction of the intermediate roller, the supporting roller and the working roller can be changed, so that the offset direction of the intermediate roller is changed according to the running direction of strip steel, the reversible stable rolling of the six-roller mill is realized, the problem of stable rolling of the roller system of the six-roller mill can be solved, and the problem of the offset direction of the intermediate roller in different rolling passes in the single stand cold rolling process can be solved.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A six-high rolling mill roll train stability adjustment device, comprising:

a frame;

the six-roller mechanism is arranged on the frame and comprises an upper supporting roller, a lower supporting roller, an upper middle roller, a lower middle roller, an upper working roller, a lower working roller and bearing seats corresponding to the rollers, wherein the upper middle roller and the lower middle roller have a set offset compared with other rollers;

the roller bending mechanism is arranged on the frame and comprises middle roller bending blocks which are correspondingly arranged at the inlet side and the outlet side of the upper middle roller and the lower middle roller, and the sum of the gap values of the bearing seats of the upper middle roller and the lower middle roller and the middle roller bending blocks at the inlet side and the outlet side of the upper middle roller and the lower middle roller is twice the set offset;

the stabilizing mechanism comprises stabilizing hydraulic cylinders positioned on an inlet operation side, an inlet transmission side, an outlet operation side and an outlet transmission side of the upper middle roller and the lower middle roller, the stabilizing hydraulic cylinders are connected with the middle roller bending blocks at corresponding positions, and the travel distance of the stabilizing hydraulic cylinders is more than twice of the set offset;

wherein the cylinder rod of the stabilizing hydraulic cylinder positioned on the inlet side abuts against the inlet side corresponding to the bearing seat so that the outlet side of the bearing seat abuts against the corresponding intermediate roll bending block and the intermediate roll bending block abuts against the E-shaped block fixed on the outlet side of the frame;

alternatively, the cylinder rod of the stabilizing cylinder on the outlet side abuts against the outlet side of the corresponding bearing housing such that the inlet side of the bearing housing abuts against the corresponding intermediate roll bending block and the intermediate roll bending block abuts against an E-block secured to the inlet side of the frame.

2. The six-high roll train stability adjustment apparatus of claim 1, further comprising a backup roll hydraulic cylinder mounted to the frame for moving the upper backup roll up and down.

3. The six-high mill roll train stability adjustment apparatus of claim 1, wherein the roll bending mechanism includes work roll bending blocks disposed at the inlet side and the outlet side of the upper and lower work rolls, respectively, the work roll bending blocks being connected with positive and negative roll bending cylinders, the roll bending cylinders including means for moving the corresponding work rolls up and down to assist in forming an intermediate roll reversing space for telescoping movement of the stabilizing hydraulic cylinders.

4. The six-high mill roll train stability adjustment apparatus of claim 1, wherein the end of the cylinder rod of the stability hydraulic cylinder is provided with a wear-resistant top cover, and the cylinder rod is abutted against the intermediate roll bending block through the wear-resistant top cover.

5. The six-high mill roll train stability adjustment assembly of claim 4, wherein the cylinder rod is removably connected to the wear cap.

6. The six-high mill roll train stability adjustment apparatus of claim 1, wherein the stability hydraulic cylinder is comprised of a single hydraulic cylinder or two or more hydraulic cylinders.

7. The six-high rolling mill roll train stability control device of claim 1, wherein the intermediate roll bending block is movably disposed in the housing in a direction from the operating side toward the drive side.

8. The roll system stability adjustment of the six high mill of any one of claims 1-7, wherein the stability hydraulic cylinder presses the intermediate roll chock against the E-block of the stand to eliminate a gap between the intermediate roll chock and the stand, depending on the intermediate roll offset direction, with the intermediate roll offset direction remaining unchanged.

9. The six-high mill roll train stability adjustment apparatus of any one of claims 1 to 7, further comprising, depending on rolling requirements, changing the intermediate roll offset direction while stabilizing the roll train by fixing the intermediate roll chock gap.

10. The roll train stability control assembly of a six high rolling mill of claim 1, wherein in the housing, an upper backup roll, an upper intermediate roll, an upper work roll, a lower intermediate roll, and a lower backup roll are disposed in sequence from top to bottom.