CN115090678A - Roll system structure for improving rigidity and anti-deformation capability of rolling mill - Google Patents

Abstract

The invention discloses a roll system structure for improving the rigidity and deformation resistance of a rolling mill, comprising two work rolls arranged symmetrically up and down, the roll system structure further comprising left auxiliary rolls and right auxiliary rolls located on both sides of the work rolls 2. Support rollers located above and below the work rolls; a fork connection device is arranged between the support rollers and the left auxiliary rollers, the support rollers and the right auxiliary rollers, so that the support rollers, the left auxiliary rollers, and the right auxiliary rollers form a triangular coupling structure ; The work roll, left auxiliary roll and right auxiliary roll are arranged side by side and rotatably on the auxiliary roll fixed support device, so that when the work roll, left auxiliary roll and right auxiliary roll move on the auxiliary roll fixed support device, the work roll, The centers of the left auxiliary roller and the right auxiliary roller are kept in a straight line. The invention has simple structure, convenient installation and strong stability.

Description

A roll structure for improving the stiffness and deformation resistance of rolling mills

technical field

The invention relates to the technical field of rolling mill rolls, in particular to a roll system structure for improving the stiffness and deformation resistance of a rolling mill.

Background technique

In the process of rolling the steel plate in the current rolling mill, it is often prone to excessive force on the roll, resulting in the offset of the roll and poor rolling quality, which reduces the surface quality of the rolled piece and the online service life of the roll, which seriously affects the production. yield and economic benefits. In order to avoid this phenomenon, it is necessary to increase the rigidity of the work rolls in the rolling mill.

Chinese patent CN212370826U discloses a vibration suppression device for a rolling mill, which includes a rolling mill stand and a hydraulic lower rolling mechanism. A first bearing seat and a second bearing seat are respectively rotatably sleeved at both ends of the first movable roll and the second movable roll. The hydraulic pressure The output end of the lower rolling mechanism is fixedly connected with the top surface of the second bearing seat, the inner side of the rolling mill stand is fixedly installed with a hydraulic pressure vibration mechanism, and the ends of the first moving roll and the second moving roll are fixedly installed with a laser ranging mechanism. The bottom end of the first bearing seat is fixedly connected with an induction support mechanism. In the present invention, two sets of independent hydraulic vibration mechanisms are arranged, the interaction between the hydraulic locking mechanism and the brake pad is utilized, and the multi-functional fixation of the adjusted work rolls of the rolling mill is also required to prevent the rolling of thin gauges. Or strong abnormal vibration phenomenon occurs when the strip with large deformation resistance. The device has complex structure and high cost, and the hydraulic pressure of the hydraulic vibration mechanism cannot be controlled well.

Chinese patent CN206882419U discloses a roll anti-deviation self-aligning device for a rolling mill, which includes an anti-deviation self-aligning column, a piston, a high-pressure gas pipe, a gas valve, a main gas pipe, an upper-aligning seat and a lower-aligning seat, characterized in that the said The upper self-aligning seat is fixedly arranged on the bearing seat of the upper roll, and the lower self-aligning seat is fixedly arranged on the bearing seat of the lower roll. The upper self-aligning seat and the lower self-aligning seat are both provided with a plurality of piston grooves, and the piston grooves are slidable. The piston is sealed and arranged, the outer end of the piston is connected with an anti-deflection self-adjusting column, the anti-deflection self-adjusting column is respectively arranged toward the upper roll and the lower roll, and each of the piston grooves is connected with the A high-pressure gas pipe, the high-pressure gas pipe is connected to the main gas pipe, and an air valve is also provided between each of the high-pressure gas pipe and the main gas pipe, and the anti-biasing of the roll is realized by controlling the intake pressure and intake volume of the high-pressure gas pipe With self-alignment. In the invention, the contact between each anti-deviation self-adjusting column and the work roll is a point and discontinuous, which is easy to cause damage to the roll body of the work roll, and it is difficult to ensure that the resultant force of the work roll passes through its own geometric center.

Chinese patent CN214234185U discloses a new type of high-pressure roller mill roller system, which utilizes the gap between the two rollers to grind the material. When the material is unevenly distributed along the roller surface, the two axes of the two work rollers will no longer appear. Parallel trend, at this time, the axes of the two rollers are forced to remain parallel by the overall rigidity of the half-frame body. In this invention, the device for keeping the work rolls parallel to the half-frame body is realized by connecting the support rollers with the baffles, and then the baffles are in direct contact with the work rolls. Although this device increases the overall rigidity of the half-frame bodies, it is not easy to achieve due to the fact that the baffles and the work rolls are in direct contact with each other. The direct contact of the rolls increases the frictional force, aggravating the wear of the work rolls and the loss of energy.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a roll system structure for improving the rigidity and deformation resistance of a rolling mill in view of the above-mentioned shortcomings of the prior art. The structure is simple, the installation is convenient, and has the characteristics of high rigidity. stability.

To achieve the above object, the technical scheme adopted by the present invention is:

A roll system structure for improving the rigidity and deformation resistance of a rolling mill, comprising two work rolls arranged symmetrically up and down, the roll system structure further comprising left auxiliary rolls and right auxiliary rolls located on both sides of the work rolls, Support rollers above and below;

A fork connection device is arranged between the support roll and the left auxiliary roll, the support roll and the right auxiliary roll, so that the support roll, the left auxiliary roll and the right auxiliary roll form a triangular coupling structure; the work roll, the left auxiliary roll, the right auxiliary roll The auxiliary rolls are arranged side by side and rotatably on the auxiliary roll fixing and supporting device, so that when the work roll, left auxiliary roll and right auxiliary roll move on the auxiliary roll fixing and supporting device, the roll center of the work roll, left auxiliary roll and right auxiliary roll is maintained. on a straight line.

As an improvement to the above technical solution, the auxiliary roll fixing and supporting device at least includes a frame to constrain the work roll, the left auxiliary roll, and the right auxiliary roll so that the left auxiliary roll and the right auxiliary roll can move closer to or away from the work roll in translation; The fork connecting device at least includes a half disc, an upper connecting body, a lower connecting body and a sleeve; the lower connecting body is rotatably sleeved on the left auxiliary roller or the right auxiliary roller, and the half disc is connected with the upper connecting body The upper connecting body and the lower connecting body are respectively connected with the sleeve in an adjustable way.

As an improvement to the above technical solution, the half disc and the upper connecting body are fixedly connected by bolts, and the upper connecting body or the lower connecting body is respectively connected with the sleeve by threads.

As an improvement to the above technical solution, the auxiliary roller fixing and supporting device further comprises a left fork and a right fork arranged in the frame, and the left auxiliary roller and the right auxiliary roller are respectively rotatably penetrated through the left fork and the right fork. On the right fork, the mutually close ends of the left fork and the right fork are provided with U-shaped clamping grooves, so that the mutually close ends of the left fork and the right fork are clamped. in the U-shaped card slot.

As an improvement to the above technical solution, the auxiliary roller fixing and supporting device further comprises an inner end cover, a bearing and an outer end cover, the bearing is embedded in the connecting hole of the left shift fork or the right shift fork, the inner end cover , The outer end cover is arranged on both sides of the left fork or the right fork to seal the bearing, and the left auxiliary roller and the right auxiliary roller pass through the inner end cover, the bearing and the outer end cover.

As an improvement to the above technical solution, the roll system structure further includes a bearing seat auxiliary positioning device, and the bearing seat auxiliary positioning device includes bearing seats arranged at both ends of the work roll, and bearing plates fixedly connected on both sides of each bearing seat , a sliding plate that can be slidably clamped in the carrying plate, a mounting block that is fixedly installed on the frame, the sliding plate is slidably installed on the mounting block, and a spring is arranged between the sliding plate and the carrying plate.

As an improvement to the above technical solution, the bottom of the slide plate is provided with a protruding structure, the mounting block is provided with a chute, the bottom of the slide plate is provided with a protruding structure and the chute on the mounting block is matched; The springs in between are compression springs.

As an improvement to the above technical solution, the roller system structure further includes a side support device, the side support device includes a cylinder hinged on the frame, a connecting column connected with the piston rod of the cylinder, and a connecting block hinged with the connecting column. , the front end of one of the connecting blocks is movably connected with two rollers, and the two rollers contact the left auxiliary roll or the right auxiliary roll so that the left auxiliary roll or the right auxiliary roll is close to the work roll, so that when the rolling mill is working, the left auxiliary roll The roll or right auxiliary roll is in close contact with the work roll.

As an improvement to the above technical solution, the connecting column and the connecting block are connected by a conical pin.

As an improvement to the above technical solution, one of the work rolls and one support roll, one left auxiliary roll, and one right auxiliary roll form a group, and a side support device is provided outside the left auxiliary roll or the right auxiliary roll.

Compared with the prior art, the beneficial effects achieved by the present invention are:

In the roll system structure for improving the stiffness and deformation resistance of the rolling mill of the present invention, 1. the backup roll, the left auxiliary roll, the work roll, the right auxiliary roll, the fork connecting device and the auxiliary roll fixing and supporting device form a stable triangular structure, so that a stable triangular structure is formed. The roll system has the characteristics of high stiffness, this stability is not easily broken. 2. The side support device plays the role of supporting the roller on the side, which further improves the rigidity of the roller system. 3. The present invention has simple structure, convenient installation and low cost.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the assembly front view structure schematic diagram of the present invention;

Fig. 2 is the assembly top view structure schematic diagram of the present invention;

Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2;

FIG. 4 is a schematic diagram of an assembled left-view structure of the present invention;

Fig. 5 is the B-B sectional view of Fig. 4;

Fig. 6 is a partial enlarged view of Fig. 5;

Fig. 7 is the connection structure schematic diagram of fork;

Fig. 8 is the front view structure schematic diagram of the roller system;

Figure 9 is a schematic diagram of the axonometric structure of the roller system;

FIG. 10 is a schematic diagram of the installation structure of the left and right forks.

Reference numerals: 1, frame; 2, side support device; 20, cylinder; 21, connecting column; 22, tapered pin; 23, connecting block; 24, roller; 3, support roller; 4, left auxiliary roller; 5. Work roll; 6. Right auxiliary roll; 7. Fork connecting device; 70. Half disc; 71. Bolt; 72. Upper connecting body; 73. Sleeve; 74. Lower connecting body; 8. Bearing seat auxiliary Positioning device; 80, bearing plate; 81, slide plate; 82, spring; 83, mounting block; 9, bearing seat; 10, auxiliary roller fixing support device; 100, left fork; 101, right fork; 102, frame; 103, inner end cover; 104, bearing; 105, outer end cover.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on those shown in the accompanying drawings The orientation or positional relationship, or the orientation or positional relationship that the product of the invention is usually placed in use, or the orientation or positional relationship that is commonly understood by those skilled in the art, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or It is implied that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the invention.

Furthermore, the terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, terms such as "arrangement" and "connection" should be understood in a broad sense, for example, "connection" may be a fixed connection or Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection or indirect connection through an intermediate medium, and may be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Figures 1-10: The roll system structure for improving the stiffness and deformation resistance of the rolling mill of the present invention mainly includes a stand 1, a side support device 2, a backup roll 3, a left auxiliary roll 4, a work roll 5, a right Auxiliary roller 6, fork connecting device 7, as shown in Figure 8, auxiliary roller fixing support device 10, as shown in Figure 10;

The side support device 2 includes a cylinder 20, a connecting column 21, a conical pin 22, a connecting block 23 and a roller 24, as shown in FIG. 3;

The fork connecting device 7 includes a half disc 70, a bolt 71, an upper connecting body 72, a sleeve 73 and a lower connecting body 74, as shown in FIG. 6; the half disc 70 and the upper connecting body 72 are connected and fixed by the bolt 71, The upper connecting body 72 and the lower connecting body 74 are connected and fixed by the sleeve 73;

The auxiliary roller fixing and supporting device 10 , as shown in FIG. 8 , includes a left fork 100 , a right fork 101 , a frame 102 , an inner end cover 103 , a bearing 104 and an outer end cover 105 , as shown in FIG. 5 .

In the side support device 2, the cylinder 20 can drive the connecting column 21, the connecting block 23 and the roller 24 to move in sequence to adjust the distance between the roller 24 and the left auxiliary roller 4, as shown in Figure 3; When measuring, the adjusting roller 24 is kept away from the left auxiliary roll 4. At this time, the left auxiliary roll 4 will move in the direction of approaching or away from the work roll 6. At the same time, the bearing seat 9 will drive the work roll 5 and the auxiliary roll fixing support device 10 up and down. Move, as shown in Figure 10, through the use of the left fork 80 and the right fork 81 in the auxiliary roller fixing support device (8), as shown in Figure 10, so that the left auxiliary roll 4, the work roll 5 and the right auxiliary roll The roll center of 6 is always kept on a straight line; when the rolling mill is working, the cylinder 20 exerts pressure on the work roll 5 through the contact between the roller 24 and the left auxiliary roll 4 to improve the stability of the work roll 5 during operation.

The half disc 70 and the upper connecting body 72 in the fork connecting device 7 are connected and fixed by bolts 71, which is convenient for the installation and assembly of the fork connecting device 7; The connecting body 74 and the sleeve 73 are fixedly connected by threads; after the rolling mill adjusts the reduction amount, the backup roll 3 is fixed, and the cylinder 20 will push the auxiliary roll to move, so that the auxiliary roll is in close contact with the work roll, which can be rotated by rotating The sleeve 73 releases the fixed connection between the upper connecting body 72 and the lower connecting body 74 , and at the same time cooperates with the lower connecting body 74 through the circular hole opened in the upper connecting body 72 to avoid movement interference, as shown in FIG. 7 .

The left auxiliary roll 4 and the right auxiliary roll 6 are respectively connected with the support roll 3 through two fork connecting devices 7; It is fixed in a straight line, so that the support roll 3, the left auxiliary roll 4, the work roll 5, the right auxiliary roll 6, the fork connection device 7 and the auxiliary roll fixing support device 10 form a stable triangular structure, which improves the rigidity of the rolling mill roll system. , as shown in Figure 8.

A spring 82 is connected between the bearing plate 80 and the sliding plate 81, the bearing plate 80 is fixedly connected to the bearing seat 9 through bolts, the mounting block 83 is fixedly connected to the frame, and the bottom of the sliding plate 81 has a protruding structure 810 and a mounting block 83. The sliding grooves 830 cooperate to realize the up and down movement of the sliding plate, and realize the synchronous movement of the bearing seat 9 and the bearing seat auxiliary positioning device 8; It resists the change of the position of the bearing seat 9 and improves the stability of the bearing seat 9 during operation, as shown in Figure 4 and Figure 5 .

The specific working process of the roll system structure used to improve the stiffness and deformation resistance of the rolling mill: take the schematic diagram shown in Figure 3 as an example, when the rolling mill adjusts the reduction, the support roll 3 moves up and down, and drives the left auxiliary roll 4 and The right auxiliary roll 6 moves toward or away from the work roll 5 in the frame 82, and at the same time, the bearing seat 9 drives the work roll 5 and the auxiliary roll fixed support device 10 to move up and down, as shown in Figure 8; the left auxiliary roll 4 and The right auxiliary roller 6 is under the action of the two limiting elements of the left shifting fork 80 and the right shifting fork 81, so that the roller centers of the left auxiliary roller 4, the work roller 5 and the right auxiliary roller 6 remain unchanged on a straight line; the bearing seat 9. Drive the bearing plate 80 and the sliding plate 81 to move up and down in turn, so that the bearing seat auxiliary positioning device 8 and the bearing seat 9 move synchronously, and the bearing plate 80 and the sliding plate 81 can move relative to each other, so that the connected spring 82 generates a deformation force to resist the bearing seat. 9. The position changes; the rolling mill adjusts the reduction amount, and after the support roller 3 is fixed, the fixed connection between the upper connecting body 72 and the lower connecting body 74 is released by the rotating sleeve 73, and the lower connecting body 74 can be on the upper connecting body 72. Then, by adjusting the side support device 2, the cylinder 20 exerts force on the auxiliary roll, so that the auxiliary roll is in close contact with the work roll 5, which improves the stability of the roll during operation and prevents the work roll The effect of deformation can achieve the effect of correcting the shape of the plate and improve the quality of the rolled product; finally, the upper connecting body 72 and the lower connecting body 74 are connected by the rotating sleeve 73. At this time, the support roll 3, the left auxiliary roll 4 and the work roll 5 are connected. , the right auxiliary roll 6 , the fork connecting device 7 and the auxiliary roll fixing and supporting device 10 form a stable triangular structure, which greatly improves the rigidity of the rolling mill roll structure.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Such changes and improvements fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "center", etc. is based on the orientation or position shown in the drawings The relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated for a specific orientation, and thus should not be construed as a limitation on the protection content of the present invention.

Claims (10)

1. A roll system structure for improving the rigidity and the deformation resistance of a rolling mill comprises two working rolls which are arranged in an up-down symmetrical mode, and is characterized by further comprising a left auxiliary roll and a right auxiliary roll which are positioned on two sides of the working rolls, and supporting rolls which are positioned above and below the working rolls;

a shifting fork connecting device is arranged between the supporting roller and the left auxiliary roller as well as between the supporting roller and the right auxiliary roller, so that the supporting roller, the left auxiliary roller and the right auxiliary roller form a triangular coupling structure; the working roll, the left auxiliary roll and the right auxiliary roll are arranged on the auxiliary roll fixing and supporting device in parallel and can rotate, so that when the working roll, the left auxiliary roll and the right auxiliary roll act on the auxiliary roll fixing and supporting device, roll centers of the working roll, the left auxiliary roll and the right auxiliary roll are kept on a straight line.

2. A roll system structure for increasing the rigidity and deformation resistance of a rolling mill as set forth in claim 1, wherein: the auxiliary roller fixing and supporting device at least comprises a frame for restraining the working roller, the left auxiliary roller and the right auxiliary roller so that the left auxiliary roller and the right auxiliary roller can be close to or far away from the working roller in a translation manner; the shifting fork connecting device at least comprises a semicircular disc, an upper connecting body, a lower connecting body and a sleeve; the rotatable cover of lower connector is established on left auxiliary roll or right auxiliary roll, the semicircle dish is connected and rotatable cover is established on the backing roll with last connector, go up connector, lower connector respectively with sleeve adjustable connection.

3. A roll system structure for increasing the rigidity and deformation resistance of a rolling mill according to claim 2, wherein: the semicircular disc is fixedly connected with the upper connector through a bolt, and the upper connector or the lower connector is respectively in threaded connection with the sleeve.

4. A roll system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 2, wherein: the auxiliary roller fixing and supporting device further comprises a left shifting fork and a right shifting fork which are arranged in the frame, the left auxiliary roller and the right auxiliary roller are respectively rotatably arranged on the left shifting fork and the right shifting fork in a penetrating mode, the left shifting fork and the right shifting fork are mutually close to the near end and provided with U-shaped clamping grooves, so that the left shifting fork and the right shifting fork are mutually close to the near end in a clamping mode, and the rotatable clamping of the working roller is arranged in the smallest U-shaped clamping groove.

5. A roll system structure for increasing the rigidity and the deformation resistance of a rolling mill according to claim 4, wherein: the auxiliary roller fixing and supporting device further comprises an inner end cover, a bearing and an outer end cover, the bearing is embedded in a connecting hole of the left shifting fork or the right shifting fork, the inner end cover and the outer end cover are arranged on two sides of the left shifting fork or the right shifting fork to seal the bearing, and the left auxiliary roller and the right auxiliary roller penetrate through the inner end cover, the bearing and the outer end cover.

6. A roll system structure for increasing the rigidity and deformation resistance of a rolling mill according to claim 5, wherein: the roller system structure further comprises a side supporting device, wherein the side supporting device comprises a cylinder hinged to the rack, a connecting column connected with a piston rod of the cylinder, a connecting block hinged to the connecting column, one, two rollers movably connected to the front end of the connecting block and a left auxiliary roller or a right auxiliary roller in roller contact, wherein the left auxiliary roller or the right auxiliary roller is close to the working roller and is in close contact with the working roller when working.

7. A roll system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 6, wherein: the connecting column is connected with the connecting block through a taper pin.

8. A roll system structure for increasing the rigidity and deformation resistance of a rolling mill according to claim 7, wherein: one working roll and a supporting roll, a left auxiliary roll and a right auxiliary roll form a group, and one side supporting device is arranged on the outer side of the left auxiliary roll or the right auxiliary roll.

9. A roll system construction for increasing the stiffness and the deformation resistance of a rolling mill as set forth in claim 8 wherein: the roller system structure further comprises a bearing seat auxiliary positioning device, the bearing seat auxiliary positioning device comprises bearing seats arranged at two ends of the working roller, bearing plates fixedly connected to two sides of each bearing seat, a sliding plate clamped in the bearing plates in a sliding mode, mounting blocks fixedly mounted on the rack, the sliding plate is slidably mounted on the mounting blocks, and springs are arranged between the sliding plate and the bearing plates.

10. A roll system construction for increasing the stiffness and the deformation resistance of a rolling mill as set forth in claim 9 wherein: the bottom of the sliding plate is provided with a convex structure, the mounting block is provided with a sliding groove, and the convex structure at the bottom of the sliding plate is matched with the sliding groove on the mounting block; the spring between the sliding plate and the bearing plate is a pressure spring.

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