A method of installing an interstand lift roll device
By installing alignment and connection structures between the flat and vertical rolling mills and the intermediate lifting device in the short stress line rolling mill, the problem of small spacing between adjacent stands was solved, enabling smooth introduction and rapid adjustment of the rolled workpiece, and improving the structural compactness and maintenance convenience of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUATIAN ENG & TECH CORP MCC
- Filing Date
- 2023-12-04
- Publication Date
- 2026-07-03
AI Technical Summary
In the multi-stand continuous rolling process of flat steel, the short stress line rolling mill has a small spacing between adjacent stands, making it difficult to install and adjust the lifting roller conveyor, which affects the introduction of rolled pieces. In addition, the existing equipment has a compact structure and is difficult to maintain.
A method for installing a lifting roll device between rolling mills is provided. The device uses a main motor to drive the alignment and connection structure between the horizontal and vertical rolling roll tracks and the intermediate lifting device to adjust the roll surface height. The main body of the device is arranged between adjacent rolling mills and can be quickly adjusted according to changes in the thickness specifications of the rolled workpiece.
The system facilitates the smooth introduction of rolled products, features a compact structure, and allows for quick and easy replacement and maintenance, thereby improving production efficiency and equipment adaptability.
Smart Images
Figure CN117600237B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of steel rolling equipment technology, and more specifically, to an installation method for a lifting roller device between rolling mills. Background Technology
[0002] Short stress line mills have advantages such as small elastic deformation, compact structure, and convenient roll changing, and are widely used in bar and wire rod rolling processes. Due to their structural advantages, they are also used in flat steel rolling processes. Continuous rolling processes in steel rolling mills can significantly improve production efficiency and save energy and production costs. Therefore, it is essential to use short stress line mills to realize multi-stand continuous rolling processes for flat steel.
[0003] Because the centerlines of the upper and lower rolls in a short stress line rolling mill move symmetrically about the rolling line, the centerline of the roll gap coincides with the rolling centerline when the roll gap changes. When a short stress line rolling mill is used for multi-stand continuous rolling of flat steel, a lifting roller conveyor system needs to be installed between the rolling mills. This lifting roller conveyor system has multiple sets of rolls. The roll surface of the lifting roller conveyor system supports the lower surface of the flat steel workpiece. When the rolling mill changes the rolling specifications, the roll surface height of the lifting roller conveyor system is adjusted accordingly due to the change in the thickness of the flat steel workpiece, so that the centerline of the workpiece coincides with the rolling line, allowing the workpiece to be smoothly fed into the rolls of the stand.
[0004] The spacing between stands in a rolling mill is influenced by the shortest billet size. To achieve multi-stand continuous rolling with the shortest billet, the spacing between adjacent mills is relatively small. This restricts the length of the inter-mill lifting roller conveyor. Rollers near the mill rolls in the lifting roller conveyor are surrounded by the stands of the short-stress mill, making hoisting for installation difficult. To realize multi-stand continuous rolling of flat steel in short-stress mills, the structural arrangement of the inter-mill lifting roller conveyor within adjacent stands needs to be addressed. Summary of the Invention
[0005] 1. The technical problem that the invention aims to solve
[0006] To address the shortcomings and deficiencies of existing technologies, this invention provides an installation method for a lifting roller device between rolling mills. Specifically, this invention addresses the problem of small spacing between adjacent stands and difficulty in arranging lifting roller tracks in short-stress line rolling mills used in flat steel continuous rolling production lines. The main body of the device is arranged between adjacent rolling mills. The roller surface height can be adjusted promptly according to changes in workpiece thickness and process specifications, smoothly guiding the workpiece into the rolling mill. The components of this invention can be easily and quickly replaced when loading and unloading. The entire lifting roller device features a novel loading and unloading method, a compact structure, and convenient maintenance.
[0007] 2. Technical Solution
[0008] To achieve the above objectives, the technical solution provided by this invention is as follows:
[0009] The present invention provides a method for installing a lifting roll device between rolling mills, the device comprising a lifting roll device assembly, wherein the lifting roll device assembly is installed between adjacent flat rolling mill rows and vertical rolling mill rows;
[0010] The lifting roll assembly includes a flat rolling mill roll table, an intermediate lifting device, and a vertical rolling mill roll table;
[0011] The flat rolling mill includes a flat rolling mill assembly, a flat rolling mill frame, and a flat rolling mill transition base plate. The upper part of the flat rolling mill frame is provided with an upper dovetail groove and pin holes for positioning and connection with the intermediate lifting device.
[0012] The vertical rolling mill includes a vertical rolling mill roll assembly, a vertical rolling mill roll frame, and a vertical rolling mill roll transition base plate. The vertical rolling mill roll frame is equipped with two dovetail plates and a dovetail with a positioning groove, which are used for positioning and connection with the intermediate lifting device.
[0013] Furthermore, the online installation method for the flat rolling mill roller table and the vertical rolling mill roller table adopts the following steps:
[0014] The flat rolling mill line includes a flat rolling mounting base and a flat rolling mill. The flat rolling mill can move horizontally on the flat rolling mounting base along a drive shaft direction perpendicular to the rolling line. A flat rolling guide beam is installed on the flat rolling mill, and a flat rolling dovetail clamping device is installed on the flat rolling guide beam.
[0015] Using the clamping function of the flat rolling dovetail clamping device on the flat rolling guide beam, the dovetails on both sides of the flat rolling roll table transition base plate are pre-clamped and installed in the flat rolling dovetail clamping device. The flat rolling roll table is placed on the flat rolling roll table transition base plate through the flat rolling roll table frame, and the positioning pin on the bottom surface of the flat rolling roll table frame is engaged with the pin hole in the flat rolling roll table transition base plate.
[0016] The flat rolling mill roller table is pre-installed in the flat rolling mill during the online preparation phase. The flat rolling mill, along with the roller table, is hoisted onto the flat rolling mill mounting base. The flat rolling mill is then moved laterally until it is aligned with the rolling centerline. The lifting roller table frame of the intermediate lifting device is pre-positioned at its lowest point. After the flat rolling mill is moved laterally to the rolling centerline position, the main motor drives the lifting machine to raise the lifting roller table frame. Through the dovetail plate engaging with the upper dovetail groove on the upper part of the flat rolling mill roller table frame, the flat rolling roll assembly is raised along with the flat rolling mill roller table frame and detached from the upper surface of the flat rolling mill roller table transition base plate. The pin holes on both sides of the flat rolling mill roller table frame are then fixed to the bolt seats of the lifting roller table frame using hinge bolts and pressure pin nuts through the bushing pins on the lifting roller table frame. Finally, the height of the roller surface of the intermediate lifting device is adjusted to meet the rolling process requirements, completing the online installation of the flat rolling mill roller table.
[0017] The vertical rolling mill line includes a vertical rolling mill mounting base, a vertical rolling mill, a lifting mechanism, and a roll changing trolley. The vertical rolling mill is mounted on the vertical rolling mill mounting base and can be driven to move vertically on the vertical rolling mill mounting base by the lifting mechanism. A roll changing trolley is located below the vertical rolling mill mounting base to connect to the vertically moved vertically to the lowest vertical rolling mill and to move the vertical rolling mill into and out of the rolling line. A vertical rolling mill guide beam is installed on the vertical rolling mill, and the vertical rolling mill dovetail clamping device is on the vertical rolling mill guide beam.
[0018] Using the clamping function of the vertical rolling dovetail clamping device on the vertical rolling guide beam, the dovetails on both sides of the vertical rolling roll table transition base plate are pre-clamped and installed in the vertical rolling dovetail clamping device. The vertical rolling roll table is placed on the vertical rolling roll table transition base plate through the vertical rolling roll table frame, and the positioning pin two on the bottom surface of the vertical rolling roll table frame is engaged with the pin hole two on the vertical rolling roll table transition base plate.
[0019] The vertical rolling mill roll table is pre-installed in the vertical rolling mill during the preparation for online operation. The vertical rolling mill and the roll table are hoisted together onto the roll changing trolley and moved into the rolling line located below the vertical rolling mill mounting base. The lifting mechanism then lifts and moves the roll table vertically until the dovetail plate on the roll table frame is flush with the end face of the side dovetail groove in the lifting roll table frame of the intermediate lifting device. At this time, the dovetail with positioning groove on the other side of the roll table frame engages with the clamping dovetail on the intermediate lifting device and is positioned in the height direction through the positioning groove. The screw is rotated to press the clamping dovetail with positioning groove on the roll table frame, thereby locking the roll table frame onto the lifting roll table frame of the intermediate lifting device. Finally, the lifting mechanism descends, causing the roll table and the roll table frame to detach from the roll table transition base plate, so that the roll table can be freely adjusted in the height direction with the intermediate lifting device.
[0020] The above method enables the flat rolling mill and vertical rolling mill to be positioned and connected to the intermediate lifting device. The overall lifting and adjustment of the flat rolling mill assembly, intermediate rolling mill assembly, and vertical rolling mill assembly can be completed by the main motor drive.
[0021] Furthermore, the bottom surface of the flat rolling mill table is provided with a positioning pin; the transition bottom plate of the flat rolling mill table has a dovetail structure and a pin hole in the middle.
[0022] Furthermore, the intermediate lifting device includes an intermediate roller assembly, a lifting roller frame, a guide bracket, a lifting machine, and a base; the intermediate roller assembly is installed and fixed on the lifting roller frame, and sliding seats are provided on both sides below the lifting roller frame. The sliding seats are assembled in the guide grooves on the guide bracket, and the sliding seats move up and down along the guide grooves. The lower part of the sliding seats is hinged to the lifting machine.
[0023] The guide bracket is equipped with lifting platforms at both ends. The lifting platforms at both ends are connected by a drive shaft and a coupling. One end of the lifting platform is connected to the main motor through a motor coupling.
[0024] The main motor provides power to the elevator, driving the lifting roller frame and intermediate roller assembly to move up and down along the guide groove in the guide bracket via the sliding seat.
[0025] Furthermore, near the vertical rolling mill assembly side, the lifting roller frame of the intermediate lifting device is provided with a side dovetail groove and a clamping dovetail. The clamping dovetail is installed in the slide and can move telescopically in the slide. The slide is fixedly installed on the end face of the lifting roller frame.
[0026] Furthermore, the head of the clamping dovetail is beveled, and a flange sleeve is installed at its tail. The flange sleeve and the screw are fitted with a shaft hole. One end of the screw has a shoulder structure, and the other end has a hexagonal structure. The screw is pressed onto the tail of the clamping dovetail through the end face of the flange sleeve and the shoulder of the screw. The shoulder of the screw can rotate in the shaft hole of the flange sleeve. A flange nut is installed on the other side of the screw. The flange nut is fixed to the vertical plate on the lifting roller frame through the flange end face. When the hexagonal structure of the screw is turned, the screw is helically driven in the flange nut, thereby driving the clamping dovetail to move telescopically in the slide.
[0027] Furthermore, near the assembly side of the flat rolling rolls, the lifting roller frame of the intermediate lifting device is equipped with a bolt seat and a dovetail plate. A hinged bolt is installed on the bolt seat. The hinged bolt can rotate around the hinge point. The hinged bolt is equipped with a bushing pin and a pressure pin nut.
[0028] When the intermediate lifting device is connected and installed with the flat rolling mill roll table, the upper dovetail groove on the flat rolling mill roll table and the dovetail plate on the lifting roller table of the intermediate lifting device are guided and aligned sideways. Then, the pin holes on both sides of the flat rolling mill roll table are fixed to the bolt seats of the lifting roller table through the bushing pins on the lifting roller table using hinge bolts and pressure pin nuts.
[0029] Furthermore, the bottom surface of the vertical rolling mill roller table is provided with a second positioning pin, and the transition bottom plate of the vertical rolling mill roller table is provided with dovetails on both sides and a second pin hole in the middle.
[0030] Furthermore, when the intermediate lifting device is connected and installed with the vertical rolling mill roll table, the dovetail plate on the vertical rolling mill roll table is guided and engaged with the side dovetail groove in the lifting roll table of the intermediate lifting device, and the dovetail end face is flush with the height direction. On the other side of the vertical rolling mill roll table, the dovetail with positioning groove engages with the clamping dovetail on the intermediate lifting device, and is positioned and engaged in the height direction through the positioning groove. Rotating the screw causes the clamping dovetail to press against the dovetail with positioning groove on the vertical rolling mill roll table, thereby locking the vertical rolling mill roll table onto the lifting roll table of the intermediate lifting device.
[0031] Furthermore, the separation and unloading process of the flat rolling mill and vertical rolling mill from the intermediate lifting device is the reverse process of the above-mentioned online installation.
[0032] 3. Beneficial effects
[0033] Compared with the prior art, the technical solution provided by this invention has the following advantages:
[0034] This invention addresses the problem of small spacing between adjacent stands and difficulty in arranging lifting rollers in short-stress line rolling mills used in flat steel continuous rolling production lines. It provides an installation method for an inter-mill lifting roller device. Horizontal and vertical rolling rollers can be installed on the front and rear sides, respectively. These rollers are pre-placed on the horizontal and vertical rolling mills, and are quickly moved up and down the lines via translation and lifting mechanisms on the horizontal and vertical mill lines. Because the horizontal and vertical rolling rollers have alignment, positioning, and connection structures for the intermediate lifting device, they can be easily and quickly aligned and connected. After being put into operation, the main motor drives the intermediate lifting device to complete the overall lifting and adjustment of the horizontal, intermediate, and vertical rolling rollers. The main body of the device is arranged between adjacent continuous rolling mills. According to changes in the thickness and process specifications of the rolled workpiece, the roller surface height can be adjusted in a timely manner to smoothly guide the rolled workpiece into the mill. The components of this invention can be easily and quickly replaced for loading and unloading. The entire lifting roller device features a novel loading and unloading method, a compact structure, and convenient maintenance. Attached Figure Description
[0035] Figure 1 A schematic diagram of the general layout for the installation method of a lifting roll device in a rolling mill;
[0036] Figure 2 This is a schematic diagram of the main structure of the lifting roll device in the rolling mill.
[0037] Figure 3 This is a schematic diagram of the flat rolling mill roller table structure;
[0038] Figure 4 This is a schematic diagram of a vertical rolling mill roller conveyor structure.
[0039] Figure 5 Schematic diagram of the intermediate lifting device Figure 1 ;
[0040] Figure 6 Schematic diagram of the intermediate lifting device Figure 2 ;
[0041] Figure 7 A schematic diagram showing the positioning and connection of the lifting roll device in the rolling mill;
[0042] Figure 8 This is a schematic diagram of the flat rolling mill roller table installation process;
[0043] Figure 9 This is a schematic diagram of the vertical rolling mill roll table installation process;
[0044] The components include: 1. Mill-interval lifting roll device; 11. Intermediate lifting device; 12. Horizontal rolling mill roll table; 13. Vertical rolling mill roll table; 14. Horizontal rolling mill roll assembly; 15. Horizontal rolling mill roll table frame; 16. Horizontal rolling mill roll table transition base plate; 17. Pin hole; 18. Upper dovetail groove; 19. Vertical rolling mill roll assembly; 110. Vertical rolling mill roll table frame; 111. Dovetail plate two; 112. Dovetail with positioning groove; 113. Vertical rolling mill roll table transition base plate; 114. Dovetail; 115. Pin hole two; 116. Intermediate roll assembly; 117. Lifting roll table frame; 118. Sliding seat; 119. Guide bracket; 120. Guide groove; 121. Lifting machine; 122. Main motor; 123. Motor coupling; 124. Coupling; 125. 1. Drive shaft; 126. Base; 127. Clamping dovetail; 128. Slide; 129. Flange sleeve; 130. Screw; 131. Flange nut; 132. Side dovetail groove; 133. Bolt seat; 134. Press pin nut; 135. Shaft sleeve pin; 136. Hinged bolt; 137. Locating pin one; 138. Pin hole one; 139. Locating pin two; 140. Dovetail plate one; 2. Flat rolling mill line; 21. Flat rolling mill mounting base; 22. Flat rolling mill; 23. Flat rolling mill guide beam; 24. Flat rolling mill dovetail clamping device; 3. Vertical rolling mill line; 31. Vertical rolling mill mounting base; 32. Vertical rolling mill; 33. Vertical rolling mill guide beam; 34. Vertical rolling mill dovetail clamping device; 35. Roll changing trolley; 36. Lifting mechanism. Detailed Implementation
[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0046] Example 1
[0047] from Figure 1-9 As can be seen, the installation method of the mill lifting roll device in this embodiment includes a lifting roll device assembly 1, which is installed between adjacent flat mill line 2 and vertical mill line 3.
[0048] like Figure 1 , Figure 2 As shown, the lifting roll assembly 1 includes a flat rolling mill roll table 12, an intermediate lifting device 11, and a vertical rolling mill roll table 13;
[0049] like Figure 3 , Figure 8 As shown, the flat rolling mill 12 includes a flat rolling mill roll assembly 14, a flat rolling mill roll frame 15, and a flat rolling mill roll transition base plate 16. The flat rolling mill roll assembly 14 is installed on the flat rolling mill roll frame 15. The upper part of the flat rolling mill roll frame 15 is provided with an upper dovetail groove 18 and a pin hole 17 for positioning and connection with the intermediate lifting device 11.
[0050] The bottom surface of the flat rolling mill roll table 15 is provided with a positioning pin 137; the cross section of the flat rolling mill roll table transition base plate 16 is a dovetail structure, and a pin hole 138 is provided in the middle.
[0051] like Figure 5 As shown, the intermediate lifting device 11 includes an intermediate roller assembly 116, a lifting roller frame 117, a guide bracket 119, a lifting machine 121, and a base 126. The intermediate roller assembly 116 is installed and fixed on the lifting roller frame 117. Sliding seats 118 are provided on both sides below the lifting roller frame 117. The sliding seats 118 are assembled in the guide grooves 120 on the guide bracket 119. The sliding seats 118 move up and down along the guide grooves 120. The lower part of the sliding seats 118 is hinged to the lifting machine 121.
[0052] The guide bracket 119 is equipped with lifting platforms 121 at both ends. The lifting platforms 121 at both ends are connected by a drive shaft 125 and a coupling 124. One end of the lifting platform 121 is connected to the main motor 122 through a motor coupling 123.
[0053] The main motor 122 provides power to the elevator 121, driving the lifting roller frame 117 and the intermediate roller assembly 116 to move up and down along the guide groove 120 in the guide bracket 119 via the sliding seat 118.
[0054] like Figure 6 , Figure 7 As shown, near the vertical rolling mill roll assembly side, the lifting roller frame 117 of the intermediate lifting device 11 is provided with a side dovetail groove 132 and a clamping dovetail 127. The clamping dovetail 127 is installed in the slide 128 and can move telescopically in the slide 128. The slide 128 is fixedly installed on the end face of the lifting roller frame 117.
[0055] The head of the clamping dovetail 127 is beveled, and a flange sleeve 129 is installed at its tail. The flange sleeve 129 and the screw 130 are fitted with a shaft hole. One end of the screw 130 has a shoulder structure, and the other end has a hexagonal structure. It is pressed onto the tail of the clamping dovetail 127 through the end face of the flange sleeve 129 and the shoulder of the screw 130. The shoulder of the screw 130 can rotate in the shaft hole of the flange sleeve 129. A flange nut 131 is installed on the other side of the screw 130. The flange nut 131 is fixed to the vertical plate on the lifting roller frame 117 through the flange end face. When the hexagonal structure of the screw 130 is turned, the screw 130 is screwed in the flange nut 131, thereby driving the clamping dovetail 127 to move telescopically in the slide 128.
[0056] like Figure 7 , Figure 8 As shown, near the assembly side of the flat rolling roll, the lifting roller frame 117 of the intermediate lifting device 11 is provided with a bolt seat 133 and a dovetail plate 140. A hinge bolt 136 is hinged on the bolt seat 133. The hinge bolt 136 can rotate around the hinge point. The hinge bolt 136 is equipped with a bushing pin 135 and a pressure pin nut 134.
[0057] like Figure 3 , Figure 7 , Figure 8 As shown, when the intermediate lifting device 11 is connected and installed with the flat rolling mill roll table 15, the upper dovetail groove 18 on the flat rolling mill roll table 15 is guided and aligned with the dovetail plate 140 on the lifting roller table 117 of the intermediate lifting device 11. Then, the pin holes 17 on both sides of the flat rolling mill roll table 15 are fixed to the bolt seats 133 of the lifting roller table 117 through the bushing pins 135 on the lifting roller table 117 using hinge bolts 136 and pressure pin nuts 134.
[0058] like Figure 4 , Figure 9 As shown, the vertical rolling mill roll table 13 includes a vertical rolling mill roll assembly 19, a vertical rolling mill roll table frame 110, and a vertical rolling mill roll table transition base plate 113. The vertical rolling mill roll table frame 110 is provided with a dovetail plate 111 and a dovetail with a positioning groove 112 for positioning and connection with the intermediate lifting device 11.
[0059] The bottom surface of the vertical rolling mill roll table 110 is provided with positioning pin 2 139, the transition base plate 113 of the vertical rolling mill roll table is provided with dovetails 114 on both sides, and pin hole 2 115 is provided in the middle.
[0060] like Figure 4 , Figure 5 , Figure 7 As shown, when the intermediate lifting device 11 is connected and installed with the vertical rolling mill roll table 110, the dovetail plate 111 on the vertical rolling mill roll table 110 is guided and engaged with the side dovetail groove 132 in the lifting roller table 117 of the intermediate lifting device 11, and the dovetail end face is flush with the height direction. On the other side of the vertical rolling mill roll table 110, the dovetail 112 with positioning groove is engaged with the clamping dovetail 127 on the intermediate lifting device 11, and is positioned and engaged in the height direction through the positioning groove. Rotating the screw 130 makes the clamping dovetail 127 press against the dovetail 112 with positioning groove on the vertical rolling mill roll table 110, thereby locking the vertical rolling mill roll table 110 onto the lifting roller table 117 of the intermediate lifting device 11.
[0061] A method for installing a lifting roll device between rolling mills, wherein the online installation of the horizontal rolling mill roll table 12 and the vertical rolling mill roll table 13 adopts the following steps:
[0062] like Figure 5 , Figure 7 , Figure 8 As shown, the flat rolling mill line 2 includes a flat rolling mounting base 21 and a flat rolling mill 22. The flat rolling mill 22 can move horizontally on the flat rolling mounting base 21 along the direction of the drive shaft perpendicular to the rolling line. A flat rolling guide beam 23 is installed on the flat rolling mill 22, and a flat rolling dovetail clamping device 24 is on the flat rolling guide beam 23.
[0063] Using the clamping function of the flat rolling dovetail clamping device 24 on the flat rolling guide beam 23, the dovetails on both sides of the flat rolling roll table transition base plate 16 are pre-clamped and installed in the flat rolling dovetail clamping device 24. The flat rolling roll table 12 is placed on the flat rolling roll table transition base plate 16 through the flat rolling roll table frame 15, and the positioning pin 137 on the bottom surface of the flat rolling roll table frame 15 is engaged with the pin hole 138 in the flat rolling roll table transition base plate 16.
[0064] The flat rolling mill 12 is pre-installed in the flat rolling mill 22 during the online preparation. Together with the flat rolling mill 12, the flat rolling mill 22 is hoisted onto the flat rolling mill mounting base 21. The flat rolling mill 22 is then moved laterally until it is aligned with the rolling centerline. The lifting roller frame 117 of the intermediate lifting device 11 is pre-positioned at its lowest level. After the flat rolling mill 22 is moved laterally to the rolling centerline position, the main motor 122 drives the lifting machine 121 to raise the lifting roller frame 117, which is then connected to the upper part of the flat rolling mill frame via the dovetail plate 140. The upper dovetail groove 18 is engaged to lift the flat rolling roll assembly 14 together with the flat rolling roll table 15 and separate it from the upper surface of the flat rolling roll table transition base plate 16. The pin holes 17 on both sides of the flat rolling roll table 15 are fixed to the bolt seats 133 of the lifting roll table 117 through the bushing pins 135 on the lifting roll table 117 using the hinge bolts 136 and the pressure pin nuts 134. Then the roll surface height of the intermediate lifting device 11 is adjusted to meet the rolling process requirements, and the flat rolling roll table 12 is installed on the line.
[0065] like Figure 1 , Figure 6 , Figure 7 , Figure 9 As shown, the vertical rolling mill line 3 includes a vertical rolling mill mounting base 31, a vertical rolling mill 32, a lifting mechanism 36, and a roll changing trolley 35. The vertical rolling mill 32 is mounted on the vertical rolling mill mounting base 31 and can be driven to move vertically on the vertical rolling mill mounting base 31 by the lifting mechanism 36. A roll changing trolley 35 is provided below the vertical rolling mill mounting base 31 to connect to the vertical rolling mill 32 that has moved vertically to the bottom and to move the vertical rolling mill 32 into and out of the rolling line. A vertical rolling mill guide beam 33 is installed on the vertical rolling mill 32, and a vertical rolling mill dovetail clamping device 34 is provided on the vertical rolling mill guide beam 33.
[0066] Using the clamping function of the vertical rolling dovetail clamping device 34 on the vertical rolling guide beam 33, the dovetails 114 on both sides of the vertical rolling roll table transition base plate 113 are pre-clamped and installed in the vertical rolling dovetail clamping device 34. The vertical rolling roll table 13 is placed on the vertical rolling roll table transition base plate 113 through the vertical rolling roll table frame 110, and the positioning pin 139 on the bottom surface of the vertical rolling roll table frame 110 is engaged with the pin hole 115 of the vertical rolling roll table transition base plate 113.
[0067] The vertical rolling mill roll table 13 is pre-installed in the vertical rolling mill 32 during the preparation for online operation. The vertical rolling mill 32, together with the vertical rolling mill roll table 13, is hoisted onto the roll changing trolley 35 and moved into the rolling line located below the vertical rolling mill mounting base 31 via the roll changing trolley 35. Then, it is vertically lifted and moved by the lifting mechanism 36 until the dovetail plate 111 on the vertical rolling mill roll table frame 110 is flush with the end face of the side dovetail groove 132 in the lifting roll table frame 117 of the intermediate lifting device 11. At this time, the dovetail plate 112 with positioning groove on the other side of the vertical rolling mill roll table frame 110 is flush with the end face of the side dovetail groove 132 in the intermediate lifting device 117. The clamping dovetail 127 on the intermediate lifting device 11 is engaged and positioned in the height direction through the positioning groove. The screw 130 is rotated to press the clamping dovetail 127 with the positioning groove dovetail 112 on the vertical rolling mill roll table 110, thereby locking the vertical rolling mill roll table 110 onto the lifting roll table 117 of the intermediate lifting device 11. Finally, the lifting mechanism 36 descends, causing the vertical rolling mill roll table 13 and the vertical rolling mill roll table 110 to disengage from the vertical rolling mill roll table transition base plate 113, so that the vertical rolling mill roll table 13 can be freely adjusted in the height direction with the intermediate lifting device 11.
[0068] The flat rolling mill 12 and the vertical rolling mill 13 are positioned and connected to the intermediate lifting device 11 in the above manner. The overall lifting and adjustment of the flat rolling mill assembly 14, the intermediate rolling mill assembly 116, and the vertical rolling mill assembly 19 can be completed by the main motor 122.
[0069] The separation and unloading process of the flat rolling mill 12, the vertical rolling mill 13, and the intermediate lifting device 11 is the reverse process of the above-mentioned online installation, and will not be described again in this manual.
[0070] In summary, addressing the problem of small spacing between adjacent stands and difficulty in arranging lifting rollers in short-stress line rolling mills used in flat steel continuous rolling production lines, this invention provides an installation method for an inter-mill lifting roller device. Horizontal and vertical rolling rollers can be installed on the front and rear sides, respectively. These rollers are pre-placed on the horizontal and vertical rolling mills, and are quickly moved up and down the lines via translation and lifting mechanisms. Because the horizontal and vertical rolling rollers have alignment, positioning, and connection structures with the intermediate lifting device, they can be easily and quickly aligned and connected. After being put into operation, the main motor drives the intermediate lifting device to complete the overall lifting and adjustment of the horizontal, intermediate, and vertical rolling rollers. The main body of the device is arranged between adjacent continuous rolling mills. According to changes in the thickness and process specifications of the rolled product, the roller surface height can be adjusted in a timely manner to smoothly guide the rolled product into the mill. The components of this invention can be easily and quickly replaced for loading and unloading. The entire lifting roller device features a novel loading and unloading method, a compact structure, and convenient maintenance.
[0071] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A method of installing an inter-stand lifting roll device, the device comprising a lifting roll device assembly (1), characterised in that: The lifting roll assembly (1) is installed between adjacent flat mill rows (2) and vertical mill rows (3); The lifting roller assembly (1) includes a flat rolling mill roller table (12), an intermediate lifting device (11), and a vertical rolling mill roller table (13). The flat rolling mill (12) includes a flat rolling mill assembly (14), a flat rolling mill frame (15), and a flat rolling mill transition base plate (16). The flat rolling mill frame (15) is provided with an upper dovetail groove (18) and a pin hole (17) on the upper part for positioning and connection with the intermediate lifting device (11). The vertical rolling mill (13) includes a vertical rolling mill roll assembly (19), a vertical rolling mill roll frame (110), and a vertical rolling mill roll transition base plate (113). The vertical rolling mill roll frame (110) is provided with a dovetail plate (111) and a dovetail with a positioning groove (112) for positioning and connection with the intermediate lifting device (11). The installation method of the flat rolling mill (12) is as follows: the flat rolling mill (12) is pre-installed in the flat rolling mill (22) during the preparation for online operation. The flat rolling mill (22) together with the flat rolling mill (12) is hoisted on the flat rolling mill mounting base (21). The flat rolling mill (22) is moved laterally to be aligned with the rolling center line. The lifting roller frame (117) of the intermediate lifting device (11) is in the lowest position in advance. After the flat rolling mill (22) is moved laterally to the rolling center line position, the lifting roller frame (117) is raised, so that the flat rolling roll assembly (14) together with the flat rolling mill frame (15) is lifted and separated from the upper surface of the flat rolling mill transition base plate (16). The flat rolling mill frame (15) is fixed on the lifting roller frame (117). Then the roller surface height of the intermediate lifting device (11) is adjusted to meet the rolling process requirements, and the online installation of the flat rolling mill (12) is completed. The installation method of the vertical rolling mill roller table (13) is as follows: the vertical rolling mill roller table (13) is pre-installed in the vertical rolling mill (32) during the preparation for the line to be put into operation. The vertical rolling mill (32) together with the vertical rolling mill roller table (13) is hoisted on the roll changing trolley (35) and moved into the rolling line located below the vertical rolling mill mounting base (31) by the roll changing trolley (35). Then, it is vertically lifted and moved by the lifting mechanism (36) until the dovetail plate two (111) on the vertical rolling mill roller table frame (110) is flush with the end face of the side dovetail groove (132) in the lifting roller table frame (117) of the intermediate lifting device (11). Rotating the screw (130) causes the clamping dovetail (127) to press against the positioning groove dovetail (112) on the vertical rolling mill roll table (110), thereby locking the vertical rolling mill roll table (110) onto the lifting roll table (117) of the intermediate lifting device (11). Finally, the lifting mechanism (36) descends, causing the vertical rolling mill roll table (13) and the vertical rolling mill roll table (110) to detach from the vertical rolling mill roll table transition base plate (113), so that the vertical rolling mill roll table (13) can be freely adjusted in height direction with the intermediate lifting device (11).
2. A method of installing an interstand lift roll device according to claim 1, characterized in that: The installation method for the flat rolling mill (12) and the vertical rolling mill (13) is as follows: The flat rolling mill (2) includes a flat rolling mounting base (21) and a flat rolling mill (22). The flat rolling mill (22) can move horizontally on the flat rolling mounting base (21) along the direction of the drive shaft perpendicular to the rolling line. A flat rolling guide beam (23) is installed on the flat rolling mill (22), and a flat rolling dovetail clamping device (24) is on the flat rolling guide beam (23). Using the clamping function of the flat rolling dovetail clamping device (24) on the flat rolling guide beam (23), the dovetails on both sides of the flat rolling roll table transition base plate (16) are pre-clamped and installed in the flat rolling dovetail clamping device (24). The flat rolling roll table (12) is placed on the flat rolling roll table transition base plate (16) through the flat rolling roll table frame (15), and the positioning pin (137) on the bottom surface of the flat rolling roll table frame (15) is engaged with the pin hole (138) in the flat rolling roll table transition base plate (16). The main motor (122) drives the elevator (121), which cooperates with the upper dovetail groove (18) on the upper part of the flat rolling mill roll table through the dovetail plate (140). The pin holes (17) on both sides of the flat rolling mill roll table (15) are fixed to the bolt seats (133) of the lifting roller table (117) through the bushing pins (135) on the lifting roller table (117) using the hinge bolts (136) and the pressure pin nuts (134). Then, the roller surface height of the intermediate lifting device (11) is adjusted to meet the rolling process requirements, and the flat rolling mill roll table (12) is installed on the line. The vertical rolling mill line (3) includes a vertical rolling mill mounting base (31), a vertical rolling mill (32), a lifting mechanism (36), and a roll changing trolley (35). The vertical rolling mill (32) is mounted on the vertical rolling mill mounting base (31) and can be driven to move vertically on the vertical rolling mill mounting base (31) by the lifting mechanism (36). A roll changing trolley (35) is provided below the vertical rolling mill mounting base (31) to connect to the vertical rolling mill (32) that moves vertically to the bottom and to move the vertical rolling mill (32) into and out of the rolling line. A vertical rolling mill guide beam (33) is installed on the vertical rolling mill (32), and a vertical rolling mill dovetail clamping device (34) is on the vertical rolling mill guide beam (33). Using the clamping function of the vertical rolling dovetail clamping device (34) on the vertical rolling guide beam (33), the dovetails (114) on both sides of the vertical rolling roll table transition base plate (113) are pre-clamped and installed in the vertical rolling dovetail clamping device (34). The vertical rolling roll table (13) is placed on the vertical rolling roll table transition base plate (113) through the vertical rolling roll table frame (110), and the positioning pin two (139) on the bottom surface of the vertical rolling roll table frame (110) is engaged with the pin hole two (115) of the vertical rolling roll table transition base plate (113). The dovetail (112) with positioning groove on the other side of the vertical rolling mill roll table (117) cooperates with the clamping dovetail (127) on the intermediate lifting device (11) and is positioned in the height direction through the positioning groove; The flat rolling mill (12) and the vertical rolling mill (13) are positioned and connected by the intermediate lifting device (11) in the above manner. The overall lifting and adjustment of the flat rolling mill assembly (14), the intermediate rolling mill assembly (116), and the vertical rolling mill assembly (19) can be completed by the main motor (122).
3. A method of installing an interstand lift roll device according to claim 2, characterized in that: The bottom surface of the flat rolling mill roll table (15) is provided with a positioning pin (137); the cross section of the flat rolling mill roll table transition bottom plate (16) is a dovetail structure, and a pin hole (138) is provided in the middle.
4. The installation method of a mill inter-roller lifting device according to claim 1, characterized in that: The intermediate lifting device (11) includes an intermediate roller assembly (116), a lifting roller frame (117), a guide bracket (119), a lift (121), and a base (126). The intermediate roller assembly (116) is installed and fixed on the lifting roller frame (117). Sliding seats (118) are provided on both sides below the lifting roller frame (117). The sliding seats (118) are assembled in the guide groove (120) on the guide bracket (119). The sliding seats (118) move up and down along the guide groove (120). The lower part of the sliding seats (118) is hinged to the lift (121). The guide bracket (119) is equipped with a lift (121) at both ends. The lifts (121) at both ends are connected by a drive shaft (125) and a coupling (124). One end of the lift (121) is connected to the main motor (122) through a motor coupling (123). The main motor (122) provides power to the elevator (121), driving the lifting roller frame (117) and the intermediate roller assembly (116) to move up and down along the guide groove (120) in the guide bracket (119) via the sliding seat (118).
5. The installation method of a mill inter-roller lifting device according to claim 4, characterized in that: Near the vertical rolling mill assembly side, the lifting roller frame (117) of the intermediate lifting device (11) is provided with a side dovetail groove (132) and a clamping dovetail (127). The clamping dovetail (127) is installed in the slide (128) and can move telescopically in the slide (128). The slide (128) is fixedly installed on the end face of the lifting roller frame (117).
6. The installation method of the mill inter-roller lifting device according to claim 5, characterized in that: The head of the clamping dovetail (127) is inclined, and a flange sleeve (129) is installed at its tail. The flange sleeve (129) and the screw (130) are fitted with a shaft hole. One end of the screw (130) has a shoulder structure, and the other end has a hexagonal structure. It is pressed onto the tail of the clamping dovetail (127) through the end face of the flange sleeve (129) and the shoulder of the screw (130). The shoulder of the screw (130) can rotate in the shaft hole of the flange sleeve (129). A flange nut (131) is installed on the other side of the screw (130). The flange nut (131) is fixed to the vertical plate on the lifting roller frame (117) through the flange end face. When the hexagonal structure of the screw (130) is turned, the screw (130) is screwed in the flange nut (131), thereby driving the clamping dovetail (127) to move in the slide (128).
7. The installation method of the mill inter-roller lifting device according to claim 4, characterized in that: Near the assembly side of the flat rolling roll, the lifting roller frame (117) of the intermediate lifting device (11) is provided with a bolt seat (133) and a dovetail plate (140). A hinge bolt (136) is hinged on the bolt seat (133). The hinge bolt (136) can rotate around the hinge point. The hinge bolt (136) is equipped with a bushing pin (135) and a pressure pin nut (134). When the intermediate lifting device (11) is connected and installed with the flat rolling mill roll table (15), the upper dovetail groove (18) on the flat rolling mill roll table (15) and the dovetail plate (140) on the lifting roller table (117) of the intermediate lifting device (11) are guided and aligned sideways. Then, the pin holes (17) on both sides of the flat rolling mill roll table (15) are fixed to the bolt seats (133) of the lifting roller table (117) through the bushing pins (135) on the lifting roller table (117) using hinge bolts (136) and pressure pin nuts (134).
8. The installation method of the mill lifting roll device according to claim 7, characterized in that: The bottom surface of the vertical rolling mill roll table (110) is provided with positioning pin two (139), the vertical rolling mill roll table transition bottom plate (113) is provided with dovetails (114) on both sides, and pin holes two (115) are provided in the middle.
9. The installation method of a mill inter-roller lifting device according to claim 8, characterized in that: When the intermediate lifting device (11) is connected and installed with the vertical rolling mill roll table (110), the dovetail plate 2 (111) on the vertical rolling mill roll table (110) is guided and engaged with the side dovetail groove (132) in the lifting roller table (117) of the intermediate lifting device (11) and the dovetail end face is flush with the height direction. The dovetail with positioning groove (112) on the other side of the vertical rolling mill roll table (110) is engaged with the clamping dovetail (127) on the intermediate lifting device (11) and is positioned and engaged in the height direction through the positioning groove. The screw (130) is rotated to press the clamping dovetail (127) with the positioning groove dovetail (112) on the vertical rolling mill roll table (110) together, thereby locking the vertical rolling mill roll table (110) on the lifting roller table (117) of the intermediate lifting device (11).
10. The installation method of a mill inter-roller lifting device according to claim 2, characterized in that: The process of separating and removing the flat rolling mill (12) from the vertical rolling mill (13) from the intermediate lifting device (11) is the reverse process of the above-mentioned online installation.