A roll system structure for improving the rigidity and deformation resistance of a rolling mill

Abstract

The present invention discloses a roll system structure for improving the rigidity and anti-deformation ability of a rolling mill, comprising two working rolls symmetrically arranged up and down, the roll system structure further comprising a left auxiliary roll and a right auxiliary roll located on both sides of the working roll, and a support roll located above and below the working roll; a fork connection device is arranged between the support roll and the left auxiliary roll, and between 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 working roll, the left auxiliary roll, and the right auxiliary roll are arranged side by side and rotatably on an auxiliary roll fixing support device, so that when the working roll, the left auxiliary roll, and the right auxiliary roll are in motion on the auxiliary roll fixing support device, the centers of the working roll, the left auxiliary roll, and the right auxiliary roll are kept in a straight line. The present invention has a simple structure, is easy to install, and has strong stability.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mill rolls, and in particular to a roll system structure for improving the rigidity and anti-deformation capability of a rolling mill. Background Art

[0002] In the current rolling mill, when rolling steel plates, the rollers are often subjected to excessive force, which leads to roller deviation and poor rolling quality, reducing the surface quality of the rolled product and the online service life of the rollers, seriously affecting production output and economic benefits. In order to avoid this phenomenon, the rigidity of the working rollers in the rolling mill must be increased.

[0003] Chinese patent CN212370826U discloses a rolling mill vibration suppression device, including a rolling mill stand and a hydraulic rolling mechanism, the first and second moving rolls are respectively rotatably sleeved with a first bearing seat and a second bearing seat at both ends, the output end of the hydraulic rolling mechanism is fixedly connected to the top surface of the second bearing seat, the inner side of the rolling mill stand is fixedly installed with a hydraulic vibration suppression mechanism, the ends of the first and second moving rolls are fixedly installed with a laser distance measurement mechanism, and the bottom end of the first bearing seat is fixedly connected with an induction support mechanism. The present invention sets two sets of independent hydraulic vibration suppression mechanisms, utilizes the interaction between the hydraulic locking mechanism and the brake strip, and prevents strong abnormal vibration when rolling thin strips or strips with large deformation resistance by fixedly locking the adjusted working rolls of the rolling mill. The device has a complex structure and high cost, and the hydraulic pressure of the hydraulic vibration suppression mechanism is difficult to control.

[0004] Chinese patent CN206882419U discloses a roller anti-deviation self-aligning device for a rolling mill, which includes an anti-deviation self-adjusting column, a piston, a high-pressure air pipe, an air valve, a main air pipe, an upper adjusting seat and a lower adjusting seat, and is characterized in that the upper adjusting seat is fixedly arranged on the upper roller bearing seat, the lower adjusting seat is fixedly arranged on the lower roller bearing seat, a plurality of piston grooves are arranged on the upper adjusting seat and the lower adjusting seat, the piston is slidably sealed in the piston groove, an anti-deviation self-adjusting column is connected to the outer end of the piston, the anti-deviation self-adjusting column is respectively arranged toward the upper roller and the lower roller, each of the piston grooves is connected to the high-pressure air pipe, the high-pressure air pipe is connected to the main air pipe, and an air valve is further arranged between each of the high-pressure air pipes and the main air pipe, so that the roller anti-deviation and self-alignment are achieved by controlling the air intake pressure and air intake amount of the high-pressure air pipe. In the invention, each anti-skewness self-adjusting column contacts the working roll at a single point and is discontinuous, which can easily cause damage to the working roll body and is difficult to ensure that the resultant force on the working roll passes through its own geometric center.

[0005] Chinese patent CN214234185U discloses a new type of roller system structure of high-pressure roller mill, which uses 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 working rollers tend to be no longer parallel. At this time, the overall rigidity of the half frame forces the axes of the two rollers to remain parallel. In this invention, the device of the half frame to keep the working rollers parallel is realized by connecting the support rollers with the baffles, and then the baffles are in direct contact with the working rollers. Although this device increases the overall rigidity of the half frame, the direct contact between the baffles and the working rollers increases the friction, exacerbating the wear of the working rollers and the loss of energy. Summary of the invention

[0006] 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 deficiencies in the prior art. The roll system structure has the characteristics of simple structure, easy installation, high rigidity and strong stability.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A roll system structure for improving the rigidity and deformation resistance of a rolling mill, comprising two working rolls symmetrically arranged up and down, the roll system structure also comprising a left auxiliary roll and a right auxiliary roll located on both sides of the working roll, and support rolls located above and below the working roll;

[0009] A fork connection device is arranged between the support roller and the left auxiliary roller, and between the support roller and the right auxiliary roller, so that the support roller, the left auxiliary roller, and the right auxiliary roller form a triangular coupling structure; the working roller, the left auxiliary roller, and the right auxiliary roller are arranged side by side and rotatably on the auxiliary roller fixing support device, so that when the working roller, the left auxiliary roller, and the right auxiliary roller move on the auxiliary roller fixing support device, the roller centers of the working roller, the left auxiliary roller, and the right auxiliary roller are kept in a straight line.

[0010] As an improvement to the above technical solution, the auxiliary roller fixing support device at least includes a frame to constrain 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 translated closer to or away from the working roller; the fork connecting device at least includes a semi-circular disc, an upper connecting body, a lower connecting body, and a sleeve; the lower connecting body is rotatably mounted on the left auxiliary roller or the right auxiliary roller, the semi-circular disc is connected to the upper connecting body and is rotatably mounted on the supporting roller, and the upper connecting body and the lower connecting body are respectively adjustably connected to the sleeve.

[0011] As an improvement to the above technical solution, the semi-circular disk and the upper connecting body are fixedly connected by bolts, and the upper connecting body or the lower connecting body is respectively connected to the sleeve by threads.

[0012] As an improvement to the above technical solution, the auxiliary roller fixing support device also includes a left fork and a right fork arranged in the frame, and the left auxiliary roller and the right auxiliary roller are rotatably inserted into the left fork and the right fork respectively, and the mutually close ends of the left fork and the right fork are provided with U-shaped grooves to enable the mutually close ends of the left fork and the right fork to be clamped, and the working roller is rotatably clamped in the smallest U-shaped groove.

[0013] As an improvement to the above technical solution, the auxiliary roller fixing support device also includes an inner end cover, a bearing and an outer end cover. The bearing is embedded in the connecting hole of the left fork or the right fork. The inner end cover and the outer end cover are arranged on both sides of the left fork or the right fork to seal the bearing. The left auxiliary roller and the right auxiliary roller pass through the inner end cover, the bearing and the outer end cover.

[0014] As an improvement to the above technical solution, the roller system structure also includes a bearing seat auxiliary positioning device, which includes bearing seats arranged at both ends of the working roller, bearing plates fixedly connected to both sides of each bearing seat, a slide plate slidably clamped in the bearing plate, and a mounting block fixedly mounted on the frame. The slide plate is slidably mounted on the mounting block, and a spring is arranged between the slide plate and the bearing plate.

[0015] As an improvement to the above technical solution, a protruding structure is provided at the bottom of the skateboard, a sliding groove is provided on the mounting block, and the protruding structure at the bottom of the skateboard cooperates with the sliding groove on the mounting block; the spring between the skateboard and the supporting plate is a compression spring.

[0016] As an improvement to the above technical solution, the roller system structure also includes a side support device, which includes a cylinder hinged on the frame, a connecting column connected to the piston rod of the cylinder, and a connecting block hinged to the connecting column. The front end of one of the connecting blocks is movably connected to two rollers, and the two rollers contact the left auxiliary roller or the right auxiliary roller to make the left auxiliary roller or the right auxiliary roller close to the working roller, so that when the rolling mill is working, the left auxiliary roller or the right auxiliary roller is in close contact with the working roller.

[0017] As an improvement to the above technical solution, the connecting column and the connecting block are connected by a conical pin.

[0018] As an improvement to the above technical solution, one working roll and one supporting roll, one left auxiliary roll and one right auxiliary roll form a group, and a side supporting device is arranged on the outer side of one of the left auxiliary roll or the right auxiliary roll.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] The roll system structure for improving the rigidity and anti-deformation ability of the rolling mill of the present invention comprises: 1. the support roll, the left auxiliary roll, the working roll, the right auxiliary roll, the fork connecting device and the auxiliary roll fixing support device form a stable triangular structure, so that the roll system has the characteristics of high rigidity, and this stability is not easy to be broken. 2. The side support device plays the role of supporting the roll on the side, further improving the rigidity of the roll system. 3. The present invention has a simple structure, is easy to install and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the assembly main structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the assembly structure of the present invention from top view;

[0024] Figure 3 for Figure 2 AA cross-sectional structural diagram;

[0025] Figure 4 It is a schematic diagram of the assembly structure of the present invention from the left side;

[0026] Figure 5 for Figure 4 BB cross-sectional view;

[0027] Figure 6 for Figure 5 A partial enlarged view of

[0028] Figure 7 It is a schematic diagram of the connection structure of the fork;

[0029] Figure 8 It is a schematic diagram of the main structure of the roller system;

[0030] Fig. 9 It is a schematic diagram of the axonometric structure of the roller system;

[0031] Fig.10 It is a schematic diagram of the installation structure of the left and right forks.

[0032] : 1. frame; 2. side support device; 20. cylinder; 21. connecting column; 22. conical pin; 23. connecting block; 24. roller; 3. support roller; 4. left auxiliary roller; 5. working roller; 6. right auxiliary roller; 7. fork connecting device; 70. semi-circular disc; 71. bolt; 72. upper connecting body; 73. sleeve; 74. lower connecting body; 8. bearing seat auxiliary positioning device; 80. load-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 DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0037] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figure 1-10 As shown in the figure: the roll system structure for improving the rigidity and anti-deformation ability of the rolling mill of the present invention mainly comprises a frame 1, a side support device 2, a support roll 3, a left auxiliary roll 4, a working roll 5, a right auxiliary roll 6, and a fork connecting device 7, as shown in the figure: Figure 8 As shown, the auxiliary roller fixing support device 10, as Fig.10 As shown;

[0040] 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. Figure 3 As shown;

[0041] The fork connecting device 7 includes a semicircular disc 70, a bolt 71, an upper connecting body 72, a sleeve 73 and a lower connecting body 74. Figure 6 As shown; the semi-circular disk 70 and the upper connecting body 72 are connected and fixed by bolts 71, and the upper connecting body 72 and the lower connecting body 74 are connected and fixed by sleeves 73;

[0042] The auxiliary roller fixing support device 10, such as Figure 8 As shown, it includes a left shift fork 100, a right shift fork 101, a frame 102, an inner end cover 103, a bearing 104 and an outer end cover 105. Figure 5 shown.

[0043] The cylinder 20 in the side support device 2 can sequentially drive the connecting column 21, the connecting block 23 and the roller 24 to move so as to adjust the distance between the roller 24 and the left auxiliary roller 4. Figure 3 As shown; when the rolling mill adjusts the reduction, the roller 24 is adjusted away from the left auxiliary roller 4. At this time, the left auxiliary roller 4 will move in the direction close to or away from the working roller 6, and the bearing seat 9 will drive the working roller 5 and the auxiliary roller fixing support device 10 to move up and down, as shown in FIG. Fig.10 As shown, the left shift fork 80 and the right shift fork 81 in the auxiliary roller fixing support device (8) are used in conjunction with each other, as shown in FIG. Fig.10 As shown, the roller centers of the left auxiliary roller 4, the working roller 5 and the right auxiliary roller 6 are always kept on a straight line; when the rolling mill is working, the cylinder 20 applies pressure to the working roller 5 through the contact between the roller 24 and the left auxiliary roller 4, thereby improving the stability of the working roller 5 during operation.

[0044] The semicircular disk 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 upper connecting body 72 is provided with a circular hole, and the upper connecting body 72 and the lower connecting body 74 are respectively fixedly connected with the sleeve 73 by threads; after the rolling mill adjusts the pressing amount, the support roll 3 is fixed, and at this time, the cylinder 20 is to push the auxiliary roll to move so that the auxiliary roll is in close contact with the working roll. The fixed connection between the upper connecting body 72 and the lower connecting body 74 can be released by rotating the sleeve 73, and at the same time, the circular hole in the upper connecting body 72 cooperates with the lower connecting body 74 to avoid movement interference, such as Figure 7 shown.

[0045] The left auxiliary roll 4 and the right auxiliary roll 6 are connected to the support roll 3 through two fork connecting devices 7 respectively; the auxiliary roll fixing support device 10 fixes the roll centers of the left auxiliary roll 4, the working roll 5 and the right auxiliary roll 6 in a straight line, so that the support roll 3, the left auxiliary roll 4, the working roll 5, the right auxiliary roll 6, the fork connecting device 7 and the auxiliary roll fixing support device 10 form a stable triangular structure, which improves the rigidity of the mill roll system structure. Figure 8 shown.

[0046] A spring 82 is connected between the bearing plate 80 and the slide plate 81. The bearing plate 80 is fixedly connected to the bearing seat 9 by bolts, and the mounting block 83 is fixedly connected to the frame. The protruding structure 810 at the bottom of the slide plate 81 cooperates with the slide groove 830 on the mounting block 83 to realize the up and down movement of the slide plate, and realize the synchronous movement of the bearing seat 9 and the bearing seat auxiliary positioning device 8; the bearing plate 80 and the slide plate 81 can move relative to each other, so that the connected spring 82 generates a deformation force to resist the change in the position of the bearing seat 9, thereby improving the stability of the bearing seat 9 during operation. Figure 4 , Figure 5 shown.

[0047] The specific working process of the roll system structure used to improve the rigidity and deformation resistance of the rolling mill: Figure 3 Taking the structural diagram shown in the figure as an example, when the rolling mill adjusts the reduction amount, the support roll 3 moves up and down, and at the same time drives the left auxiliary roll 4 and the right auxiliary roll 6 to move in the frame 82 toward or away from the working roll 5, and at the same time makes the bearing seat 9 drive the working roll 5 and the auxiliary roll fixing support device 10 to move up and down, as shown in FIG. Figure 8As shown; under the action of the two limiting original parts of the left fork 80 and the right fork 81, the left auxiliary roller 4 and the right auxiliary roller 6 keep the roller centers of the left auxiliary roller 4, the working roller 5 and the right auxiliary roller 6 in a straight line; the bearing seat 9 drives the bearing plate 80 and the slide 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 slide plate 81 can move relative to each other, so that the connected spring 82 generates a deformation force to resist the change of the position of the bearing seat 9; after the rolling mill adjusts the pressing amount and the support roller 3 is fixed, the fixed connection between the upper connecting body 72 and the lower connecting body 74 is released by rotating the sleeve 73. The lower connector 74 can move in the circular hole opened in the upper connector 72, and then by adjusting the side support device 2, the cylinder 20 applies force to the auxiliary roller, so that the auxiliary roller is in close contact with the working roller 5, which improves the stability of the roller during operation and prevents the deformation of the working roller body, thereby achieving the effect of correcting the plate shape and improving the quality of the rolled product; finally, the upper connector 72 and the lower connector 74 are connected by rotating the sleeve 73. At this time, the support roller 3, the left auxiliary roller 4, the working roller 5, the right auxiliary roller 6, the fork connection device 7 and the auxiliary roller fixing support device 10 form a stable triangular structure, which greatly improves the rigidity of the rolling mill roll system structure.

[0048] The above shows and describes 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 to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the invention claimed for protection. The scope of protection claimed for the present invention is defined by the attached claims and their equivalents.

[0049] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "center", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Claims

1. A roll system structure for improving the rigidity and deformation resistance of a rolling mill, comprising two working rolls symmetrically arranged up and down, characterized in that: The roll system structure also includes a left auxiliary roll and a right auxiliary roll located on both sides of the working roll, and support rolls located above and below the working roll; A fork connection device is provided between the support roller and the left auxiliary roller, and between the support roller and the right auxiliary roller, so that the support roller, the left auxiliary roller, and the right auxiliary roller form a triangular coupling structure; the working roller, the left auxiliary roller, and the right auxiliary roller are arranged side by side and rotatably on the auxiliary roller fixing support device, so that when the working roller, the left auxiliary roller, and the right auxiliary roller move on the auxiliary roller fixing support device, the roller centers of the working roller, the left auxiliary roller, and the right auxiliary roller are kept in a straight line; The auxiliary roller fixing support device at least includes a frame to constrain 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 translated closer to or away from the working roller; the fork connecting device at least includes a semi-circular disc, an upper connecting body, a lower connecting body, and a sleeve; the lower connecting body is rotatably mounted on the left auxiliary roller or the right auxiliary roller, the semi-circular disc is connected to the upper connecting body and is rotatably mounted on the supporting roller, and the upper connecting body and the lower connecting body are respectively adjustably connected to the sleeve.

2. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 1, characterized in that: The semi-circular disk and the upper connecting body are fixedly connected by bolts, and the upper connecting body or the lower connecting body is respectively connected to the sleeve by threads.

3. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 1, characterized in that: The auxiliary roller fixing support device also includes a left fork and a right fork arranged in the frame. The left auxiliary roller and the right auxiliary roller are rotatably inserted into the left fork and the right fork respectively. The mutually close ends of the left fork and the right fork are provided with U-shaped grooves to enable the mutually close ends of the left fork and the right fork to be clamped, and the working roller is rotatably clamped in the smallest U-shaped groove.

4. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 3, characterized in that: The auxiliary roller fixing support device also includes an inner end cover, a bearing and an outer end cover. The bearing is embedded in the connecting hole of the left fork or the right fork. The inner end cover and the outer end cover are arranged on both sides of the left fork or the right fork to seal the bearing. The left auxiliary roller and the right auxiliary roller pass through the inner end cover, the bearing and the outer end cover.

5. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 4, characterized in that: The roller system structure also includes a side support device, which includes a cylinder hinged on the frame, a connecting column connected to the piston rod of the cylinder, and a connecting block hinged to the connecting column. The front end of one of the connecting blocks is movably connected to two rollers, and the two rollers contact the left auxiliary roller or the right auxiliary roller to make the left auxiliary roller or the right auxiliary roller close to the working roller and make the left auxiliary roller or the right auxiliary roller in close contact with the working roller during operation.

6. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 5, characterized in that: The connecting column and the connecting block are connected via a conical pin.

7. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 6, characterized in that: A working roll and a supporting roll, a left auxiliary roll and a right auxiliary roll form a group, and a side supporting device is arranged on the outer side of the left auxiliary roll or the right auxiliary roll.

8. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 7, characterized in that: The roller system structure also includes a bearing seat auxiliary positioning device, which includes bearing seats arranged at both ends of the working roller, bearing plates fixedly connected to both sides of each bearing seat, a slide plate slidably clamped in the bearing plate, and a mounting block fixedly installed on the frame. The slide plate is slidably mounted on the mounting block, and a spring is arranged between the slide plate and the bearing plate.

9. The roller system structure for improving the rigidity and deformation resistance of a rolling mill according to claim 8, characterized in that: The bottom of the slide plate is provided with a protruding structure, the mounting block is provided with a sliding groove, the protruding structure at the bottom of the slide plate matches with the sliding groove on the mounting block; the spring between the slide plate and the bearing plate is a compression spring.

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