Cold-rolling mill roller mounting device capable of quickly replacing roller
By designing a roll installation device that combines sliding strips, bearing strips, and hydraulic cylinders, the problem of cumbersome roll replacement in cold rolling mills was solved, enabling a fast and simplified roll replacement process that can adapt to rolls of different sizes and improve installation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-03-06
AI Technical Summary
The process of changing rolls in a cold rolling mill is cumbersome, requiring repeated height adjustments and being unsuitable for rolls of different sizes, resulting in low installation efficiency.
Design a roll mounting device including a frame, column, load-bearing component and hydraulic cylinder. The roll length can be adjusted by sliding strip, load-bearing strip and bidirectional screw. Combined with hydraulic cylinder and "U" shaped frame, quick roll replacement can be achieved, and friction can be reduced by needle roller support.
It simplifies the roll replacement process, improves replacement efficiency, adapts to rolls of different lengths and sizes, eliminates the need for repeated height adjustments during replacement, and has a wide range of applications.
Smart Images
Figure CN223970632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold rolling mill technology, and in particular to a cold rolling mill roll installation device that allows for quick roll replacement. Background Technology
[0002] A cold rolling mill is a mechanical device used to roll metal materials at a recrystallization temperature. Its principle is to use an electric motor to drag the metal material and apply pressure to the metal through two or more rolls, thereby causing it to compress and deform in the rolling direction. During the cold rolling process, the rolls are in direct contact with the surface of the metal material and generate relative motion. The friction between them will cause the material on the surface of the rolls to wear gradually, causing the size and shape of the rolls to change. Therefore, the rolls need to be replaced regularly according to certain service cycles or rolling volumes.
[0003] The work rolls of a cold rolling mill are usually replaced in pairs. During replacement, the archway on one side of the cold rolling mill is usually removed first, then the shafts on both sides of the work roll are hoisted by hand-operated hoists, and finally the work roll is moved horizontally to complete the disassembly. The work roll can be installed by reversing the steps. This replacement method requires disassembling and installing two sets of work rolls in sequence, which is cumbersome. In addition, the hoisting height needs to be repeatedly adjusted when installing two sets of work rolls, making the installation process complicated. Therefore, a cold rolling mill roll installation device that can quickly replace rolls is proposed. Utility Model Content
[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0005] In view of the above-mentioned problems with the cold rolling mill roll installation device that allows for quick roll replacement, this utility model is proposed.
[0006] To solve the above technical problems, the present invention provides the following technical solution: a cold rolling mill roll installation device that can quickly replace rolls, including a frame and two sets of columns fixedly connected to the top of the frame, and two sets of bearing components are slidably arranged between the two sets of columns in the vertical direction;
[0007] The bearing assembly includes a sliding strip that is slidably disposed between two sets of columns in a vertical direction, two sets of bearing strips that are mirror-slidably disposed on the sliding strip in a direction perpendicular to the columns, and a bidirectional screw that is rotatably disposed above the sliding strip. The two sets of bearing strips are threaded through the opposite sides of the threads of the bidirectional screw. The top sides of the two sets of bearing strips are mirror-slidably provided with "V"-shaped grooves for bearing the roller shaft.
[0008] Hydraulic cylinders are fixedly connected between the two sets of columns, both above and below the two sets of load-bearing components. The top of the lower hydraulic cylinder is fixedly connected to the lower sliding plate, and the top of the upper hydraulic cylinder is fixedly connected to a "U"-shaped frame. Both ends of the "U"-shaped frame are hinged to the upper sliding plate.
[0009] As a preferred embodiment of the cold rolling mill roll installation device for quick roll replacement described in this utility model, wherein: multiple sets of needle rollers are rotatably connected to both sides of the "V" shaped groove, and the needle rollers located on both sides of the "V" shaped groove are symmetrically arranged in a "figure-eight" shape.
[0010] As a preferred embodiment of the cold rolling mill roll installation device for quick roll replacement described in this utility model, wherein: both sets of columns are provided with installation openings, both sides of the two sets of installation openings are fixed with vertically arranged slide rails, both sides of the sliding strip are provided with sliding grooves in cooperation with each set of slide rails, and the sliding strip is slidably disposed between the two sets of columns in the vertical direction through the cooperation of the slide rails and sliding grooves.
[0011] As a preferred embodiment of the cold rolling mill roll installation device for quick roll replacement described in this utility model, wherein: bearing seats are fixedly connected to both sides of the top of the sliding strip, the handwheel rotates through two sets of bearing seats, and the handwheel is rotatably positioned above the sliding strip through the two sets of bearing seats.
[0012] As a preferred embodiment of the cold rolling mill roll installation device for quick roll replacement described in this utility model, wherein: two sets of fixed beams are fixedly connected between the two sets of columns, two sets of hydraulic cylinders are fixedly connected to the two sets of fixed beams respectively, the piston rods of the two sets of fixed beams slide through the two sets of hydraulic cylinders respectively, and the fixed beams are fixedly connected between the two sets of columns through the hydraulic cylinders.
[0013] The beneficial effects of this utility model are:
[0014] 1. By setting up two sets of load-bearing components and two sets of hydraulic cylinders, the device can simultaneously replace two sets of work rolls of the cold rolling mill without repeatedly adjusting the height during replacement. Compared with existing technologies, this simplifies the installation process and improves replacement efficiency.
[0015] 2. The spacing between the two sets of bearing strips in the bearing assembly is adjustable, which can adapt to the replacement of rolls of different lengths. The bearing assembly supports the roll shaft through the "V" groove, which can adapt to roll shafts of different sizes and has a wide range of applications. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0017] Figure 1 This is a three-dimensional structural diagram of a cold rolling mill roll installation device with quick roll replacement according to the present invention.
[0018] Figure 2 This is a vertical cross-sectional view of a cold rolling mill roll installation device with quick roll replacement according to the present invention.
[0019] Figure 3 This is a cross-sectional view of a cold rolling mill roll installation device with quick roll replacement according to the present invention.
[0020] Figure 4 This is a partial three-dimensional structural diagram of a cold rolling mill roll installation device with quick roll replacement according to the present invention.
[0021] Figure 5 This is a schematic diagram of the roll changing state structure of a cold rolling mill roll installation device with quick roll changing according to the present invention.
[0022] Figure descriptions: 1. Frame; 2. Column; 3. Load-bearing assembly; 31. Sliding strip; 32. Load-bearing strip; 33. Double-acting screw; 34. Needle roller; 35. Bearing seat; 36. Handwheel; 4. Fixed beam; 5. Hydraulic cylinder; 6. "U" shaped frame. Detailed Implementation
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0027] Reference Figures 1-5 As an embodiment of the present invention, a cold rolling mill roll installation device that allows for quick roll replacement is provided, which includes a frame 1 and two sets of columns 2 fixedly connected to the top of the frame 1, and two sets of bearing components 3 are slidably arranged between the two sets of columns 2 in the vertical direction.
[0028] The bearing assembly 3 includes a sliding strip 31 that is slidably disposed vertically between two sets of columns 2, two sets of bearing strips 32 that are mirror-slidably disposed on the sliding strip 31 in the direction perpendicular to the columns 2, and a bidirectional screw 33 that is rotatably disposed above the sliding strip 31. The two sets of bearing strips 32 are threaded through the opposite sides of the threads of the bidirectional screw 33. The top sides of the two sets of bearing strips 32 are mirror-slidably provided with "V"-shaped grooves for bearing the roller shaft. When the bidirectional screw 33 is rotated, the bidirectional screw 33 drives the two sets of bearing strips 32 to move mirror-slidably along the sliding strip 31, thereby adjusting the distance between the two sets of sliding strips 31. In use, the distance can be adjusted according to the length of the roller, making the device suitable for replacing rollers of different lengths.
[0029] Hydraulic cylinders 5 are fixedly connected to both the top and bottom of the two sets of support components 3 between the two sets of columns 2. The top of the lower hydraulic cylinder 5 is fixedly connected to the lower sliding plate 31, and the top of the upper hydraulic cylinder 5 is fixedly connected to a U-shaped frame 6. Both ends of the U-shaped frame 6 are hinged to the upper sliding plate 31. In use, as... Figure 5 As shown, firstly, two new sets of rolls are hoisted and placed between two sets of "V"-shaped grooves on one side of the two sets of bearing components 3. Then, the two sets of bearing components 3 are adjusted to a suitable height using two sets of hydraulic cylinders 5. Next, the two sets of bearing components 3 are inserted below the two sets of rolls of the cold rolling mill, with the side furthest from the new rolls. Then, the two sets of bearing components 3 are moved upwards using the two sets of hydraulic cylinders 5, so that the two sets of bearing strips 32 of the bearing components 3 support the rotating shafts on both sides of the corresponding rolls through the "V"-shaped grooves. At this point... With the new roll and the roll to be replaced at the same height, disassemble the archway on one side of the cold rolling mill. At this time, move the frame 1 along the direction parallel to the roll to remove the roll to be replaced. Rotate the frame 1 180° so that the new roll is facing the roll bearing of the cold rolling mill. Move the frame 1 towards the cold rolling mill and insert the two sets of new roll shafts into the roll bearing of the cold rolling mill. Then reinstall the disassembled archway. Use the two sets of hydraulic cylinders 5 to lower the two sets of bearing components 3 respectively and pull out the two sets of bearing components 3 to complete the installation.
[0030] like Figure 1 , Figure 3 and Figure 4 As shown, multiple sets of needle rollers 34 are rotatably connected to both sides of the "V"-shaped groove. The needle rollers 34 on both sides of the "V"-shaped groove are symmetrically arranged in a "figure-eight" shape. The multiple sets of needle rollers are used to reduce the friction between the roll shaft and the device. The "figure-eight" symmetrical arrangement allows the needle rollers to distribute the force more evenly to the two side walls of the "V"-shaped groove when the gravitational load of the roll is transmitted to the needle rollers through the shaft. This arrangement also allows the device to support the roll with multiple sets of needle rollers 34 at the same time, thereby increasing the load of the device. The "V"-shaped groove, together with the "figure-eight" symmetrically arranged needle rollers 34, can restrict the position of the roll from two directions, providing a positioning effect in the radial direction and to a certain extent in the axial direction, which is beneficial to improving the stability of the roll.
[0031] like Figure 1 and Figure 4 As shown, both sets of columns 2 are provided with installation openings, and vertically arranged slide rails are fixed on both sides of both sets of installation openings. Sliding strips 31 are provided with sliding grooves on both sides to cooperate with each set of slide rails. The sliding strips 31 are slidably arranged between the two sets of columns 2 in the vertical direction through the cooperation of slide rails and sliding grooves.
[0032] like Figure 3 and Figure 4 As shown, bearing seats 35 are fixedly connected to both sides of the top of the sliding plate 31. The bidirectional screw 33 rotates through the two sets of bearing seats 35 and is rotatably positioned above the sliding plate 31 through the two sets of bearing seats 35. A handwheel 36 is installed at one end of the bidirectional screw 33.
[0033] like Figure 2 and Figure 4 As shown, two sets of fixed beams 4 are fixedly connected between the two sets of columns 2. Two sets of hydraulic cylinders 5 are fixedly connected to the two sets of fixed beams 4 respectively. The piston rods of the two sets of fixed beams 4 slide through the two sets of hydraulic cylinders 5 respectively. The fixed beams 4 are fixedly connected between the two sets of columns 2 through the hydraulic cylinders 5.
[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A cold rolling mill roll mounting arrangement for quick change of rolls, characterised in that: The utility model provides a kind of steel rolling mill, including frame (1) and two groups of fixed connection in the top of frame (1) column (2), two groups of the column (2) between slidingly arranged two groups of bearing assembly (3) in vertical direction; The bearing assembly (3) includes sliding plate strip (31) slidingly arranged between two groups of columns (2) in vertical direction, two groups of bearing plate strips (32) are mirror slidingly arranged on the sliding plate strip (31) in the direction perpendicular to the column (2), two-way screw (33) is rotationally arranged above the sliding plate strip (31), two groups of the bearing plate strips (32) are respectively threaded on the two sides of two-way screw (33) with opposite screw thread rotation direction, "V"-shaped groove of bearing roll rotating shaft is mirror opened on the top of two groups of the bearing plate strips (32) on both sides; Two groups of the column (2) between the top and the bottom of two groups of bearing assembly (3) are fixedly connected with hydraulic cylinder (5), the top of the hydraulic cylinder (5) below is fixedly connected with the sliding plate strip (31) below, the top of the hydraulic cylinder (5) above is fixedly connected with "U"-shaped frame (6), both ends of the "U"-shaped frame (6) are hinged with the sliding plate strip (31) above.
2. A cold rolling mill roll mounting arrangement for quick roll change according to claim 1, characterized in that: Both sides of the "V"-shaped groove are rotationally connected with multiple needle rollers (34), the needle rollers (34) on both sides of the "V"-shaped groove are arranged in "splayed shape” symmetry.
3. A cold rolling mill roll mounting arrangement for quick change of rolls according to claim 1 or 2, characterized in that: Two groups of the column (2) are provided with mounting port, both sides of two groups of the mounting port are fixed with vertically arranged slide rail, both sides of the sliding plate strip (31) are provided with sliding groove matched with each group of slide rail, the sliding plate strip (31) is slidingly arranged between two groups of columns (2) in vertical direction through the cooperation of slide rail and sliding groove.
4. A cold rolling mill roll mounting arrangement for quick change of rolls as claimed in claim 3 wherein: Both sides of the top of the sliding plate strip (31) are fixedly connected with bearing seat (35), two-way screw (33) is rotationally arranged above the sliding plate strip (31) through two groups of bearing seat (35).
5. A cold rolling mill roll mounting arrangement for quick roll change according to claim 4, characterized in that: Two groups of the column (2) are fixedly connected with two groups of fixed beams (4), two groups of the hydraulic cylinder (5) are fixedly connected with two groups of fixed beams (4), respectively, the piston rod of two groups of the fixed beams (4) is slidingly arranged in two groups of hydraulic cylinder (5), the fixed beam (4) is fixedly connected between two groups of columns (2) through hydraulic cylinder (5).