Roll system of vertical roll mill and vertical roll mill

Abstract

The invention provides a vertical rolling mill roll system and a vertical rolling mill, and relates to the technical field of vertical rolling mills. The vertical rolling mill roll system comprises a lower transmission bearing box and a roll, the lower transmission bearing box comprises a power input horizontal shaft and a power output vertical shaft which are synchronously and rotationally connected, the roll is arranged at the end, away from the power input horizontal shaft, of the power output vertical shaft in a sleeving mode, and the power input horizontal shaft is used for being connected with a driving shaft. The rollers can be directly assembled on the lower transmission bearing box, the overall height of the rolling mill is directly reduced, due to the fact that the rollers are connected with the power output vertical shaft, a transmission chain is simplified, middle connecting parts are reduced, the maintenance complexity and cost are reduced, the replacement process of the roller system is more convenient, and the service life of the rolling mill is prolonged. And the purposes of being smaller in size, easy to maintain, economical and practical are achieved, and the device is particularly suitable for a wide and thick plate steckel mill production line with high requirements for the overall size and maintenance.

Description

Technical Field

[0001] This invention relates to the field of vertical roll mill technology, and more specifically, to a vertical roll mill roll system and a vertical roll mill. Background Technology

[0002] In hot-roll mill production lines, vertical roll mills generally adopt an upper-drive structure design, as referenced. Figure 4 As shown, this structure relies on a motor to transmit power to the roller (200) through a reducer and a connecting shaft (500), resulting in a significant increase in overall height and placing higher demands on installation space. Furthermore, the configuration of the upper transmission box (400) and lower transmission box (600) at both ends of the connecting shaft (500) complicates the assembly process, requiring precise adjustment of the positions of each component and increasing the difficulty of on-site operation. For thick plate hot roll mill production lines, due to the thinner slab thickness, the functional requirements for vertical roll mills are lower. Using traditional vertical roll mills would not meet the practical needs of economic efficiency and ease of maintenance. Summary of the Invention

[0003] The problem this invention addresses is how to improve the economic efficiency of vertical roll mills when the capacity requirements are not high.

[0004] To address the aforementioned problems, the present invention provides a vertical roll mill roll system, comprising a lower drive bearing housing and rolls. The lower drive bearing housing includes a power input horizontal shaft and a power output vertical shaft that are synchronously rotatably connected. The rolls are sleeved on the end of the power output vertical shaft away from the power input horizontal shaft. The power input horizontal shaft is used to connect to a drive shaft.

[0005] Optionally, the lower transmission bearing housing further includes a limiting component, and the power output vertical shaft includes a connecting end extending from the roller, the limiting component being sleeved on the connecting end and abutting against the roller.

[0006] Optionally, the limiting component includes a shoulder ring and a conical sleeve. The shoulder ring is fitted onto the connecting end and abuts against the roller. A gap is left between the inner ring of the shoulder ring and the connecting end. The conical sleeve is fitted onto the connecting end and embedded in the gap, and mates with the conical surface of the shoulder ring.

[0007] Optionally, the limiting component further includes an end cap, which is sleeved on the connecting end and engages with the shoulder ring and the conical sleeve respectively, and abuts against the roller.

[0008] Optionally, the limiting component further includes a sliding plate, the connecting end is provided with a groove arranged along its extension direction, the sliding plate slides along the groove and engages with the connecting end, and the end cap is connected to the sliding plate by bolts.

[0009] Optionally, the limiting assembly further includes a flange cover, a stud, a first pad, a piston, a second pad, and a round nut. The piston is coaxial with the first pad and engages with it. The stud passes sequentially through the piston and the first pad along the axial direction of the end cover and is threadedly connected to the connecting end. The shoulder of the stud abuts against the piston. The flange cover is fitted onto the first pad and connected to the end cover. The second pad is fitted onto the piston and abuts against the flange cover. The round nut is fitted onto the stud and threadedly connected to it. The round nut abuts against the second pad.

[0010] Optionally, the lower drive bearing housing may also include a lifting plate located outside thereon.

[0011] Optionally, the lower transmission bearing housing further includes two connecting plates, which are spaced apart along the length of the lower transmission bearing housing and located outside the lower transmission bearing housing. The two connecting plates are respectively connected to a hydraulic cylinder, wherein the hydraulic cylinder is used to drive the lower transmission bearing housing to move axially along the power input horizontal axis.

[0012] Optionally, the power input horizontal shaft and the power output vertical shaft are connected by a bevel gear set.

[0013] Compared with related technologies, the vertical roll mill roll system of the present invention has a synchronously rotating power input horizontal shaft and a power output vertical shaft arranged in the lower transmission bearing housing. The power input horizontal shaft is connected to the drive shaft, and the rotation of the power input horizontal shaft driven by the drive shaft can be converted into the rotation of the power output vertical shaft. The rollers are sleeved on the ends of the power output vertical shaft away from the power input horizontal shaft. The rollers can be directly assembled on the lower transmission bearing housing, which directly reduces the overall height of the roll mill. Due to the connection between the rollers and the power output vertical shaft, the transmission chain is simplified and intermediate connecting parts are reduced, thereby reducing the complexity and cost of maintenance. The replacement process of the roll system is more convenient, achieving the goals of smaller size, simple maintenance, and economic practicality. It is particularly suitable for wide and thick plate hot roll mill production lines with high requirements for overall size and maintenance.

[0014] On the other hand, the present invention also provides a vertical roll mill, including the vertical roll mill roll system as described above.

[0015] This vertical roll mill possesses all the beneficial effects of the vertical roll mill's roll system, which will not be elaborated here. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the roll system of a vertical roll mill in an embodiment of the present invention; Figure 2 This is a schematic diagram of the limiting component in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a vertical roll mill including a vertical roll mill roll system in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a conventional vertical roller mill in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 100 - Lower transmission bearing housing; 101 - Lifting plate; 102 - Connecting plate; 110 - Power input horizontal shaft; 120 - Power output vertical shaft; 200 - Roller; 300 - Limiting assembly; 310 - Shoulder ring; 320 - Tapered sleeve; 330 - End cover; 340 - Slide plate; 350 - Flange cover; 360 - Stud; 370 - First pad; 380 - Piston; 390 - Second pad; 391 - Round nut; 400 - Upper transmission box; 500 - Connecting shaft; 600 - Lower transmission box. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] In the accompanying drawings, the X-axis represents left and right positions, with the positive direction of the X-axis representing the right side and the negative direction representing the left side; the Z-axis represents up and down positions, with the positive direction of the Z-axis representing the top and the negative direction representing the bottom. It should be noted that the aforementioned representations of the X and Z axes are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0020] It should be noted that the terms "first," "second," etc., used in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0021] Combination Figure 4As shown, vertical roll mills in hot plate rolling mill production lines generally adopt an upper-drive structure design. This structure relies on a motor to transmit power to the rolls (200) through a reducer and a connecting shaft (500), resulting in a significant increase in overall height and placing higher demands on installation space. Furthermore, the configuration of the upper transmission box (400) and lower transmission box (600) at both ends of the connecting shaft (500) complicates the assembly process, requiring precise adjustment of the positions of each component and increasing the difficulty of on-site operation. For hot plate rolling mills producing thick plates, due to the thinner slab thickness, the functional requirements for vertical roll mills are lower. Using traditional vertical roll mills would not meet the practical needs of economy, practicality, and ease of maintenance. Therefore, a compact, easy-to-maintain, and cost-optimized vertical roll mill roll system solution is urgently needed.

[0022] Combination Figures 1 to 3 As shown, an embodiment of the present invention provides a vertical roll mill roll system, including a lower drive bearing housing 100 and a roll 200. The lower drive bearing housing 100 includes a power input horizontal shaft 110 and a power output vertical shaft 120 that are synchronously rotatably connected. The roll 200 is sleeved on the end of the power output vertical shaft 120 away from the power input horizontal shaft 110. The power input horizontal shaft 110 is used to connect to a drive shaft.

[0023] Specifically, the power input horizontal shaft 110 is rotatably mounted in the lower transmission bearing housing 100 along the X-axis and can rotate around its own axis. The power output vertical shaft 120 is rotatably mounted in the lower transmission bearing housing 100 along the Z-axis and can also rotate around its own axis. The upper end of the power output vertical shaft 120 extends from the lower transmission bearing housing 100 to be assembled with the roller 200. The method of rotatably mounting the power input horizontal shaft 110 and the power output vertical shaft 120 is not specifically limited. For example, both the power input horizontal shaft 110 and the power output vertical shaft 120 can be mounted in the lower transmission bearing housing 100 via bearings to rotate around their respective axes. A first bevel gear and a second bevel gear are respectively mounted on the power input horizontal shaft 110 and the power output vertical shaft 120, meshing with each other. This allows the rotation of the power input horizontal shaft 110 to be converted into the rotation of the power output vertical shaft 120 through the two bevel gears, thereby driving the roller 200 to rotate.

[0024] Therefore, in this embodiment, a horizontal power input shaft 110 and a vertical power output shaft 120 are synchronously rotated within the lower transmission bearing housing 100. The horizontal power input shaft 110 is connected to the drive shaft, and the rotation of the horizontal power input shaft 110 driven by the drive shaft can be converted into the rotation of the vertical power output shaft 120. The roller 200 is sleeved on the end of the vertical power output shaft 120 away from the horizontal power input shaft 110. The roller 200 can be directly mounted on the lower transmission bearing housing 100, which directly reduces the overall height of the rolling mill. Due to the connection between the roller 200 and the vertical power output shaft 120, the transmission chain is simplified, intermediate connecting parts are reduced, and the complexity and cost of maintenance are reduced, making the replacement process of the roller system more convenient. This achieves the goals of smaller size, simpler maintenance, and economic practicality, and is particularly suitable for wide and thick plate hot roll mill production lines with high requirements for overall size and maintenance.

[0025] Optionally, combined Figures 1 to 3 As shown, the lower transmission bearing housing 100 also includes a limiting component 300, and the power output vertical shaft 120 includes a connecting end extending from the roller 200. The limiting component 300 is sleeved on the connecting end and abuts against the roller 200.

[0026] Specifically, the connecting end of the power output vertical shaft 120 extending from the roller 200 is the upper end of the power output vertical shaft 120. This connecting end can be designed as a cylindrical shaft segment with a specific diameter and length, and its surface can be machined with keyways, splines, or threads to make a reliable mechanical connection with the limiting assembly 300, thereby providing a stable mounting base for the limiting assembly 300, enabling it to effectively act on the roller 200 to achieve axial limiting.

[0027] Thus, by fitting the limiting component 300 onto the connecting end and abutting against the roller 200, the limiting component 300 provides a reliable axial fixing mechanism for the roller 200. This limiting component 300 effectively constrains the axial movement of the roller 200 on the power output vertical shaft 120, preventing the roller 200 from loosening or displacing due to force or vibration during rolling, thereby improving operational stability and reliability, reducing equipment failures and maintenance frequency caused by the axial movement of the roller 200, and ultimately ensuring the accuracy and production efficiency of the rolled products.

[0028] Optionally, combined Figure 2 As shown, the limiting component 300 includes a shoulder ring 310 and a cone sleeve 320. The shoulder ring 310 is sleeved on the connecting end and abuts against the roller 200. There is a gap between the inner ring of the shoulder ring 310 and the connecting end. The cone sleeve 320 is sleeved on the connecting end and embedded in the gap, and it mates with the cone surface of the shoulder ring 310.

[0029] Specifically, both the shoulder ring 310 and the tapered sleeve 320 are designed in annular shape to allow them to fit onto the connecting end of the power output vertical shaft 120. During assembly, the shoulder ring 310 is first fitted onto the connecting end of the power output vertical shaft 120, with a gap between the inner ring of the shoulder ring 310 and the connecting end. Then, the tapered sleeve 320 is fitted onto the connecting end of the power output vertical shaft 120 and embedded in the gap between the inner ring of the shoulder ring 310 and the connecting end. When the tapered sleeve 320 is subjected to axial clamping force, its tapered surface interacts with the tapered surface of the shoulder ring 310, converting the axial force into a radial expansion force, thereby tightly gripping the connecting end and effectively preventing the limiting assembly 300 from loosening or shifting during equipment operation.

[0030] Thus, with the shoulder ring 310 fitted onto the connecting end and abutting against the roller 200, the shoulder ring 310 can restrict the axial movement of the roller 200. Furthermore, with a gap between the inner ring of the shoulder ring 310 and the connecting end, the tapered sleeve 320 is fitted onto the connecting end and embedded in the gap, and it mates with the tapered surface of the shoulder ring 310. In this way, when the tapered sleeve 320 is subjected to a clamping force, the interaction between the tapered surfaces converts the axial force into a strong radial clamping force, thereby firmly holding the connecting end. This effectively prevents the limiting component 300 from loosening or displacing when the rolling mill is running at high speed or under impact load, greatly enhancing the running stability of the roller 200.

[0031] Optionally, combined Figure 2 As shown, the limiting component 300 also includes an end cap 330, which is sleeved on the connecting end. The end cap 330 is engaged with the shoulder ring 310 and the cone sleeve 320 respectively, and abuts against the roller 200.

[0032] Specifically, the end cap 330 can be made of high-strength steel, cast iron, or alloy materials. A through hole is provided at the axis of the end cap 330 to allow it to be fitted onto the connecting end of the power output vertical shaft 120. Inside the end cap 330, a positioning groove is provided that matches the shape of the top of the shoulder ring 310 and the tapered sleeve 320. After the end cap 330 is fitted onto the connecting end of the power output vertical shaft 120, it engages with the shoulder ring 310 and the tapered sleeve 320 respectively through the positioning groove. This mechanical interlocking strengthens the connection between the end cap 330 and the shoulder ring 310 and the tapered sleeve 320, preventing these components from loosening or separating during operation due to vibration or load.

[0033] Thus, by fitting the end cap 330 onto the connecting end and abutting against the roller 200, the end cap 330 can directly abut against the roller 200, thereby providing additional and direct axial support for the roller 200. Furthermore, the end cap 330 is engaged with the shoulder ring 310 and the tapered sleeve 320 respectively. The end cap 330 enhances the connection strength and overall stability between the shoulder ring 310 and the tapered sleeve 320, avoiding the loosening problem that may occur if the shoulder ring 310 and the tapered sleeve 320 rely solely on the tapered surface fit. This significantly improves the fixing stability and axial positioning accuracy of the roller 200 during the rolling process, effectively suppresses the axial displacement and vibration of the roller 200, thereby reducing the maintenance frequency and cost caused by displacement and wear, extending the service life of the equipment, and ensuring the quality of the rolled products.

[0034] Optionally, combined Figure 2 As shown, the limiting component 300 also includes a sliding plate 340, and the connecting end is provided with a sliding groove arranged along its extension direction. The sliding plate 340 slides along the sliding groove and engages with the connecting end. The end cap 330 is connected to the sliding plate 340 by bolts.

[0035] Specifically, the connecting end of the power output vertical shaft 120 is provided with a sliding groove, the length direction of which is consistent with the length direction of the power output vertical shaft 120. During assembly, the slide plate 340 slides along the sliding groove and engages with the connecting end of the power output vertical shaft 120, allowing the connecting end of the power output vertical shaft 120 to drive the slide plate 340 to rotate synchronously. Then, the end cap 330 is fitted onto the connecting end of the power output vertical shaft 120 and connected to the slide plate 340 by bolts, wherein the length direction of the bolts is consistent with the radial direction of the connecting end of the power output vertical shaft 120.

[0036] Thus, by sliding the slide plate 340 along the groove and engaging with the connecting end, the slide plate 340 and the connecting end of the power output vertical shaft 120 rotate synchronously. Then, by bolting the end cover 330 to the slide plate 340, the end cover 330 can rotate synchronously with the connecting end of the power output vertical shaft 120, thereby improving the stability of the end cover 330.

[0037] Optionally, combined Figure 2 As shown, the limiting assembly 300 also includes a flange cover 350, a stud 360, a first pad 370, a piston 380, a second pad 390, and a round nut 391. The piston 380 is coaxial with the first pad 370 and is engaged with the first pad 370. The stud 360 passes through the piston 380 and the first pad 370 sequentially along the axial direction of the end cover 330 and is threadedly connected to the connecting end. The shoulder of the stud 360 abuts against the piston 380. The flange cover 350 is fitted onto the first pad 370 and is connected to the end cover 330. The second pad 390 is fitted onto the piston 380 and abuts against the flange cover 350. The round nut 391 is fitted onto the stud 360 and is threadedly connected to the stud 360. The round nut 391 abuts against the second pad 390.

[0038] Specifically, the piston 380 is coaxial with the first pad 370, and a through hole structure is provided at the axis position. The piston 380 and the first pad 370 are engaged. The engagement method can be that an annular mounting groove is provided at the upper end of the first pad 370, and the lower end of the piston 380 is engaged in the annular mounting groove. During the process of the stud 360 passing through the piston 380 and the first pad 370 from top to bottom and being screwed into the connection end of the power output vertical shaft 120, the stud 380 and the first pad 370 act as gaskets to enhance the connection stability between the stud 360 and the connection end of the power output vertical shaft 120, thereby maximizing the screwing depth of the stud 360. Then, the flange cover 350 and the second pad 390 are coaxial, and a through hole structure is also provided at the axis. The flange cover 350 is sleeved on the first pad 370 and connected to the end cover 330 by bolts. The second pad 390 is located above the flange cover 350. The second pad 390 is sleeved on the piston 380 and abuts against the flange cover 350. The round nut 391 is sleeved on the stud 360 and tightened. During the tightening process, the round nut 391 applies a force to the second pad 390 toward the connection end of the power output vertical shaft 120. This force acts on the end cover 330 through the second pad 390 and the flange cover 350 to eliminate the axial gap between the components of the limiting assembly 300.

[0039] Thus, the coaxial engagement of piston 380 and first pad 370 ensures precise alignment of the components, effectively preventing loosening due to eccentricity. Stud 360 axially passes through piston 380 and first pad 370 along end cap 330 and is threaded to the connecting end. Simultaneously, its shoulder abuts against piston 380, achieving direct and stable axial fastening force transmission, significantly enhancing the displacement and vibration resistance of the fixed structure. Flange cover 350, fitted onto first pad 370 and connected to end cap 330, forms a robust external protective layer, improving the overall structural rigidity and effectively resisting external impacts. Second pad 390, fitted onto piston 380 and abutting against flange cover 350, disperses pressure generated during operation, evenly distributing the load, thereby reducing localized stress concentration and extending component lifespan. The round nut 391, through its threaded connection with the stud 360 and abutting against the second pad 390, provides a convenient axial preload adjustment function. This allows for quick and precise adjustment of the tightness during installation and maintenance, greatly simplifying the maintenance process and improving the reliability and operational stability of the equipment. The flange cover 350, stud 360, first pad 370, piston 380, second pad 390, and round nut 391 together form a multi-layered, adjustable fixing structure to enhance the fixing reliability and adjustability of the limit assembly 300.

[0040] Optionally, combined Figure 1As shown, the lower transmission bearing housing 100 also includes a lifting plate 101 placed outside it.

[0041] Specifically, the lifting plate 101 can be firmly fixed to the outer surface of the lower transmission bearing housing 100 by means of welding or high-strength bolt connection.

[0042] Thus, by installing a lifting plate 101 on the outside of the lower drive bearing housing 100, a standardized and easy-to-operate lifting interface is provided for the entire vertical roll mill roll system (especially its core component, the lower drive bearing housing 100). This allows for convenient movement of the lower drive bearing housing 100 using lifting equipment during the installation, commissioning, routine maintenance, and replacement of the vertical roll mill roll system, improving work efficiency and significantly reducing the safety risks for workers when handling heavy equipment.

[0043] Optionally, combined Figure 1 and Figure 3 As shown, the lower transmission bearing housing 100 also includes two connecting plates 102. The two connecting plates 102 are distributed at intervals along the length direction of the lower transmission bearing housing 100 and are located outside the lower transmission bearing housing 100. The two connecting plates 102 are respectively connected to hydraulic cylinders, wherein the hydraulic cylinders are used to drive the lower transmission bearing housing 100 to move axially along the power input horizontal shaft 110.

[0044] Specifically, the connecting plate 102 can be a steel plate structure welded to the outside of the lower transmission bearing housing 100, a cast or forged component fixed to the side of the lower transmission bearing housing 100 by bolts, or a flange structure integrally formed with the body of the lower transmission bearing housing 100. When adjusting the gap between the two rollers 200, each lower transmission bearing housing 100 is connected to two hydraulic cylinders. The drive ends of the two hydraulic cylinders are respectively driven by the two connecting plates 102. The extension of the drive ends allows the lower transmission bearing housing 100 to move axially along the power input horizontal shaft 110, thereby changing the distance between the two lower transmission bearing housings 100 and thus adjusting the gap between the two rollers 200. After adjustment, the power input horizontal shaft 110 of each lower transmission bearing housing 100 is then connected to the drive shaft.

[0045] Thus, by distributing two connecting plates 102 at intervals along the length of the lower drive bearing housing 100 and connecting them to hydraulic cylinders respectively, single-point stress concentration is avoided, ensuring that the lower drive bearing housing 100 is evenly stressed during movement, thereby guaranteeing the smoothness of its movement and the reliability of its structure. Furthermore, when maintenance, replacement, or repair of the roller 200 or the lower drive bearing housing 100 is required, the lower drive bearing housing 100 can be moved axially by the hydraulic cylinder to a convenient position, simplifying the maintenance process, shortening downtime, reducing maintenance costs, and enabling the entire roller system to better adapt to different working conditions and production needs, thus improving the overall operating efficiency and economy of the equipment.

[0046] Optionally, combined Figure 1 As shown, the power input horizontal shaft 110 and the power output vertical shaft 120 are connected by a bevel gear set.

[0047] Specifically, the bevel gear set can be either a straight bevel gear or a spiral bevel gear to ensure that the power transmission between the power input horizontal shaft 110 and the power output vertical shaft 120 is both efficient and stable, thereby providing a reliable power source for the vertical roll mill roll system.

[0048] Thus, by connecting the horizontal power input shaft 110 and the vertical power output shaft 120 via a bevel gear set, the bevel gear set achieves efficient conversion of the power direction from horizontal to vertical, effectively reducing energy loss and mechanical vibration during transmission, and improving transmission efficiency and stability. Furthermore, compared to other complex transmission mechanisms, the bevel gear set has a relatively compact structure, simplifying the overall design of the transmission system and reducing manufacturing and maintenance complexity. This improves the overall reliability and ease of maintenance of the vertical rolling mill's roll system, effectively solving the performance defects that may result from traditional transmission methods.

[0049] Combination Figure 3 As shown, another embodiment of the present invention also provides a vertical roll mill, including the vertical roll mill roll system as described above.

[0050] Specifically, the vertical roll mill can have two roll systems. The lower drive bearing housing 100 of each roll system is slidably mounted on the mill frame. The power input horizontal shaft 110 of each lower drive bearing housing 100 is connected to a corresponding drive shaft, allowing the power input horizontal shaft 110 to rotate synchronously with the drive shaft. Rolls 200 are mounted on the connecting end of the corresponding power output vertical shaft 120 and are axially limited and fixed by a limiting assembly 300, significantly reducing the mill's center of gravity and overall vertical height. Simultaneously, the installation, disassembly, and replacement of rolls 200 are more convenient, reducing cumbersome maintenance steps and downtime. Furthermore, by optimizing the structure and simplifying maintenance, this vertical roll mill can reduce operating costs throughout its service life and may reduce initial manufacturing costs by using more standardized or economical components. Therefore, the vertical roll mill of this application has a more compact structure, is easier to operate, simpler to maintain, and more economical, better meeting the needs of specific application scenarios.

[0051] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A roll system for a vertical rolling mill, characterized in that, It includes a lower drive bearing housing (100) and a roller (200). The lower drive bearing housing (100) includes a power input horizontal shaft (110) and a power output vertical shaft (120) that are synchronously rotatably connected. The roller (200) is sleeved on the end of the power output vertical shaft (120) away from the power input horizontal shaft (110). The power input horizontal shaft (110) is used to connect to the drive shaft.

2. The vertical roll mill roll system according to claim 1, characterized in that, The lower transmission bearing housing (100) also includes a limiting component (300), and the power output vertical shaft (120) includes a connecting end extending from the roller (200), and the limiting component (300) is sleeved on the connecting end and abuts against the roller (200).

3. The vertical roll mill roll system according to claim 2, characterized in that, The limiting component (300) includes a shoulder ring (310) and a conical sleeve (320). The shoulder ring (310) is sleeved on the connecting end and abuts against the roller (200). A gap is left between the inner ring of the shoulder ring (310) and the connecting end. The conical sleeve (320) is sleeved on the connecting end and embedded in the gap, and it cooperates with the conical surface of the shoulder ring (310).

4. The vertical roll mill roll system according to claim 3, characterized in that, The limiting component (300) also includes an end cap (330), which is sleeved on the connecting end. The end cap (330) is engaged with the shoulder ring (310) and the cone sleeve (320) respectively, and abuts against the roller (200).

5. The vertical roll mill roll system according to claim 4, characterized in that, The limiting component (300) also includes a sliding plate (340), the connecting end is provided with a sliding groove arranged along its extension direction, the sliding plate (340) slides along the sliding groove and engages with the connecting end, and the end cap (330) is connected to the sliding plate (340) by bolts.

6. The vertical roll mill roll system according to claim 5, characterized in that, The limiting assembly (300) further includes a flange cover (350), a stud (360), a first pad (370), a piston (380), a second pad (390), and a round nut (391). The piston (380) is coaxial with and engages with the first pad (370). The stud (360) passes sequentially through the piston (380) and the first pad (370) along the axial direction of the end cover (330) and is threadedly connected to the connecting end. The shoulder of the stud (360) abuts against the piston (380), the flange cover (350) is fitted onto the first pad (370) and connected to the end cover (330), the second pad (390) is fitted onto the piston (380) and abuts against the flange cover (350), the round nut (391) is fitted onto the stud (360) and threadedly connected to the stud (360), and the round nut (391) abuts against the second pad (390).

7. The vertical roll mill roll system according to claim 1, characterized in that, The lower drive bearing housing (100) also includes a lifting plate (101) located outside it.

8. The vertical roll mill roll system according to claim 1, characterized in that, The lower transmission bearing housing (100) further includes two connecting plates (102). The two connecting plates (102) are spaced apart along the length direction of the lower transmission bearing housing (100) and located outside the lower transmission bearing housing (100). The two connecting plates (102) are respectively connected to a hydraulic cylinder, wherein the hydraulic cylinder is used to drive the lower transmission bearing housing (100) to move axially along the power input horizontal shaft (110).

9. The vertical roll mill roll system according to claim 1, characterized in that, The power input horizontal shaft (110) and the power output vertical shaft (120) are connected by a bevel gear set.

10. A vertical roll mill, characterized in that, Includes the vertical roll mill roll system as described in any one of claims 1-9.

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