Rolling mill stand changing system in a compact space plant

Abstract

The application discloses a rolling mill stand replacement system in a space compact workshop, comprising: an online transverse moving device between an online rolling station O1 and a stand replacement station O2; a cross-over transport vehicle running between the stand replacement station O2 and a 1# transport vehicle first station O3; a 1# transverse moving vehicle running between the 1# transport vehicle first station O3 and a 1# transport vehicle second station O4; an offline rolling mill base between the 1# transport vehicle second station O4 and a 2# transport vehicle first station O5, realizing replacement of an old rolling mill stand and a new rolling mill stand; a 2# transverse moving vehicle running between the 2# transport vehicle first station O5 and a roll replacement station O6, realizing movement of the rolling mill stand from the 2# transport vehicle first station O5 to the roll replacement station O6. The space compact rolling mill stand replacement system has the advantages of small workshop land occupation area and low capital investment cost compared with a linear arrangement type of the prior art.

Description

Technical Field

[0001] This invention relates to the field of rolling mill technology, and in particular to a rolling mill stand replacement system in a compact plant. Background Technology

[0002] Rolling mills are widely deployed in steel rolling workshops. They use two relatively rotating rolls to roll hot billets to improve the strength and rigidity of the products. As the most critical heavy machinery in a steel rolling workshop, the importance of the rolling mill to the entire production line is self-evident. It directly affects the mechanical properties and quality precision of the products, and also determines the annual capacity and production efficiency of the entire steel rolling workshop.

[0003] Workshop production managers typically create production schedules based on customer product orders. When the type or specification of the billet to be rolled needs to be changed, or when the rolling mill undergoes a comprehensive overhaul, the existing rolling mill stand (the old stand) must be pulled out entirely from the operating side of the mill. A motor-driven cable trolley then transports it along a laid track to the off-line area, where it is hoisted by an overhead crane to the grinding roll workshop. There, the upper and lower rolls of the old stand are manually disassembled. After the new rolls are installed, the pre-assembled new rolling mill stand from the grinding roll workshop is hoisted to the off-line area, and then a cable trolley transports it to the rolling station and installs it in place before rolling the subsequent billets.

[0004] Therefore, in traditional hot rolling production lines, when replacing old mill stands, the entire stand is transported in a straight line by a cable chain trolley to the distant offline area. After the old mill stand is replaced, the new mill stand is then transported in a straight line from the distant offline area to the online rolling area by a cable chain trolley. According to the workshop process technology plan, the offline area of ​​the steel rolling workshop generally adopts a linear layout. The entire mill stand is transported from the operating side by a cable chain trolley along a track to the area near the grinding roll workshop. The offline area is relatively long, occupies a large area, and requires high capital investment. This process technology plan puts significant pressure on the production and operation of small and medium-sized steel mills. Summary of the Invention

[0005] In view of this, the present invention provides a rolling mill stand replacement system in a compact factory building to solve the problems of large factory building area, high capital investment cost and low equipment replacement efficiency in the prior art.

[0006] Therefore, the present invention provides the following technical solution:

[0007] This invention discloses a rolling mill stand replacement system in a compact plant, comprising:

[0008] Online rolling station O1 and stand change station O2 are located in the online area;

[0009] The first workstation O3 of transport vehicle #1, the second workstation O4 of transport vehicle #1, and the first workstation O5 of transport vehicle #2 are located in the offline area;

[0010] Roll replacement station O6 is located in the roll removal area;

[0011] An online traverse device is located between the online rolling station O1 and the stand changing station O2; an online mill base is provided above the online traverse device, the online mill base is used to fix the mill stand, the online mill base is connected to a push-pull cylinder mechanism No. 1, and can slide on the online traverse device to realize the movement from the online rolling station O1 to the stand changing station O2;

[0012] A cross-span transport vehicle operates between the stand changing station O2 and the first station O3 of the No. 1 transport vehicle; the two ends of the cross-span transport vehicle are respectively connected to the No. 2 push-pull cylinder mechanism and the No. 3 push-pull cylinder mechanism, both of which can be connected to the rolling mill stand, so as to realize the movement of the rolling mill stand from the stand changing station O2 to the first station O3 of the No. 1 transport vehicle;

[0013] A 1# transverse transfer car operates between the first station O3 and the second station O4 of the 1# transport vehicle; the 1# transverse transfer car is connected to the rolling mill stand, enabling the rolling mill stand to move from the first station O3 of the 1# transport vehicle to the second station O4 of the 1# transport vehicle;

[0014] The offline rolling mill base is located at the second workstation O4 of the No. 1 transport vehicle and the first workstation O5 of the No. 2 transport vehicle; the offline rolling mill base includes a left base for placing the old rolling mill stand and a right base for placing the new rolling mill stand, which can realize the replacement of the old rolling mill stand and the new rolling mill stand;

[0015] A 2# transverse transfer vehicle operates between the first station O5 of the 2# transport vehicle and the roll changing station O6; the 2# transverse transfer vehicle is connected to the mill stand, enabling the mill stand to move from the first station O5 of the 2# transport vehicle to the roll changing station O6;

[0016] The offline area and the roll removal area are located on the side of the online area; the online rolling station O1, the stand changing station O2, the first station O3 of the No. 1 transport vehicle, and the second station O4 of the No. 1 transport vehicle are inverted Z-shaped; the second station O4 of the No. 1 transport vehicle, the first station O5 of the No. 2 transport vehicle, and the roll changing station O6 are inverted L-shaped.

[0017] Furthermore, the online transverse movement device includes a transverse movement device base and a top sliding plate. The bottom of the transverse movement device base is anchored to the foundation by bolts. A set of top sliding plates is provided on each side of the upper end face of the transverse movement device base, which directly contacts the bottom sliding plate on the lower end face of the online rolling mill base.

[0018] Furthermore, the transport vehicle includes a first geared motor, a first coupling, a first drive sprocket, a first guide rail, a first transport chain, a second guide rail, a first driven sprocket, a first transport vehicle base, and a U-shaped hook. The first geared motor provides driving force, driving the first drive sprocket to rotate through the first coupling. The two ends of the first transport chain are respectively engaged with the first drive sprocket and the first driven sprocket, and the first driven sprocket rotates passively with the first transport chain. The bottom of the first transport vehicle base is fixed to the foundation, and the first guide rail and the second guide rail are respectively fixed to the top two sides of the first transport vehicle base with bolts. By adjusting the tension of the first driven sprocket, the U-shaped hook with the notch facing upward can be raised and lowered. After the U-shaped hook is raised, it can be connected to the U-shaped hook trunnion of the rolling mill stand. The first geared motor drives the first drive sprocket, and drives the rolling mill stand to roll forward above the first guide rail and the second guide rail through the first transport chain.

[0019] Furthermore, the No. 1 transverse transfer vehicle includes a second reduction motor, a second coupling, a second drive sprocket, a first left guide wheel assembly, a second transport chain, a first right guide wheel assembly, a second driven sprocket, a first transverse transfer vehicle base, and a first guide wheel synchronous shaft;

[0020] The second geared motor provides driving force, which drives the second drive sprocket to rotate through the second coupling. The two ends of the second transport chain are respectively engaged with the second drive sprocket and the second driven sprocket, and the second driven sprocket rotates passively with the second transport chain. The bottom of the first transverse vehicle base is fixed to the foundation, and the first left guide wheel group and the first right guide wheel group are respectively fixed to the top two sides of the first transverse vehicle base with bolts. The first left guide wheel group and the first right guide wheel group are connected through the first guide wheel synchronous shaft to ensure the synchronicity of the rotation of the two guide wheels.

[0021] The offline mill base is placed on top of the first left guide wheel group and the first right guide wheel group; the second reduction motor drives the second drive sprocket and drives the offline mill base to move above the No. 1 transverse car through the second transport chain. The first left guide wheel group and the first right guide wheel group are passively rotated as the offline mill base slides and support the offline mill base to move forward.

[0022] Furthermore, the No. 2 transverse transfer vehicle includes a third reduction motor, a third coupling, a third drive sprocket, a second left guide wheel assembly, a third transport chain, a second right guide wheel assembly, a third driven sprocket, a second transverse transfer vehicle base, and a second guide wheel synchronous shaft;

[0023] The third geared motor provides driving force, which drives the third drive sprocket to rotate through the third coupling. The two ends of the third transport chain are respectively engaged with the third drive sprocket and the third driven sprocket, and the third driven sprocket rotates passively with the third transport chain. The bottom of the second transverse trolley base is fixed to the foundation, and the second left guide wheel group and the second right guide wheel group are respectively fixed to the top two sides of the second transverse trolley base with bolts. The second left guide wheel group and the second right guide wheel group are connected by the second guide wheel synchronous shaft to ensure the synchronicity of the rotation of the two guide wheels.

[0024] The top of the second left guide wheel group and the second right guide wheel group is placed on the roll removal area mill base. The third reduction motor drives the third drive sprocket and drives the roll removal area mill base to move above the No. 2 transverse car through the third transport chain. The second left guide wheel group and the second right guide wheel group are passively rotated as the roll removal area mill base slides and support the roll removal area mill base to move forward.

[0025] Furthermore, the No. 1 push-pull cylinder mechanism includes a first cylinder head, a first bearing seat, a first base, a No. 1 push-pull cylinder, and a first tail support;

[0026] The bottom of the first tail support is anchored to the foundation by bolts, and the top of the first tail support is where the No. 1 push-pull cylinder is placed. The first tail support is used to support the tail section of the No. 1 push-pull cylinder. The end of the No. 1 push-pull cylinder near the cylinder head is supported and fixed by the first bearing seat. The first bearing seat is fastened to the top of the first base by bolts and a stop block. The first base is a welded steel structure. Its bottom is anchored to the foundation by bolts, while its left side is connected to the side upright plate of the transverse movement device base by bolts. The first cylinder head is connected to the first trunnion of the online rolling mill base by a pin.

[0027] Furthermore, the online mill base includes a first mill base, a first base locking block, a first frame locking block, a bottom slide plate, a first trunnion, a pin, and a shaft end baffle;

[0028] The first mill base is a welded structural component, with a first frame locking block on its top, distributed on both sides of the first mill base; the first mill base has a first base locking block on its bottom, distributed on both sides of the first mill base; the bottom of the first mill base is also provided with the bottom sliding plate, which directly contacts the top sliding plate on the upper end face of the online transverse device; the first trunnion is welded to the right side upright plate of the first mill base, and the first trunnion is connected to the first cylinder head by a pin, with a shaft end baffle provided on the pin.

[0029] Furthermore, the #2 push-pull cylinder mechanism includes a second cylinder head, a second bearing seat, a second base, a #2 push-pull cylinder, a second tail support, and a second cylinder head wheel; the bottom of the second tail support is bolted to the foundation, and the #2 push-pull cylinder is placed on its top, which supports the tail section of the #2 push-pull cylinder; the end of the #2 push-pull cylinder near the cylinder head is supported and fixed by the second bearing seat, which is fastened to the top of the second base by bolts and a stop block, and the bottom of the second base is bolted to the foundation; the second cylinder head adopts a U-shaped hook structure with the notch facing upwards, facilitating connection with the U-shaped hook trunnion with the notch facing downwards at the bottom of the rolling mill frame; a second cylinder head wheel is provided near the bottom of the second cylinder head, which can roll forward above the first guide rail and the second guide rail;

[0030] The #3 push-pull cylinder mechanism includes a third cylinder head, a third bearing seat, a third base, a #3 push-pull cylinder, a third tail support, and a third cylinder head wheel. The bottom of the third tail support is bolted to the foundation, and the #3 push-pull cylinder is placed on its top. The third tail support supports the tail section of the #3 push-pull cylinder. The end of the #3 push-pull cylinder near the cylinder head is supported and fixed by the third bearing seat. The third bearing seat is fastened to the top of the third base by bolts and a stop block. The bottom of the third base is bolted to the foundation. The third cylinder head adopts a U-shaped hook structure with the notch facing upwards, which facilitates connection with the U-shaped hook trunnion with the notch facing downwards at the bottom of the rolling mill frame. The third cylinder head wheel is located near the bottom of the third cylinder head and can roll forward above the first guide rail and the second guide rail.

[0031] The #4 push-pull cylinder mechanism includes a fourth cylinder head, a fourth bearing seat, a fourth base, a #4 push-pull cylinder, a fourth tail support, and a fourth cylinder head wheel. The bottom of the fourth tail support is bolted to the foundation, and the #4 push-pull cylinder is placed on top of it. The fourth tail support supports the tail section of the #4 push-pull cylinder. The end of the #4 push-pull cylinder near the cylinder head is supported and fixed by the fourth bearing seat. The fourth bearing seat is fastened to the top of the fourth base by bolts and a stop block. The bottom of the fourth base is bolted to the foundation. The fourth cylinder head adopts a U-shaped hook structure with the notch facing upwards, which facilitates connection with the U-shaped hook trunnion with the notch facing downwards at the bottom of the rolling mill stand. The fourth cylinder head wheel is located near the bottom of the fourth cylinder head and can roll forward above the first guide rail and the second guide rail.

[0032] Furthermore, the mill base in the roll splitting area includes a second mill base, a second base locking block, and a second frame locking block. The second mill base is a welded structural component, with the second frame locking block installed on its top and distributed on both sides of the second mill base. The second base locking block is installed at the bottom of the second mill base and is distributed on both sides of the second mill base.

[0033] Advantages and positive effects of the present invention:

[0034] The space-compact mill stand replacement system of this invention arranges the offline area and the roll removal area on the side of the main motor of the mill. Compared with the linear arrangement of traditional technology (the offline area is set at the far end of the mill operation side), it has significant advantages such as small plant area and low capital investment cost. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the process layout of the mill stand replacement system in an embodiment of the present invention;

[0037] Figure 2 This is a simplified process layout diagram of the mill stand replacement system in an embodiment of the present invention;

[0038] Figure 3 This is an AA rotating view of the mill stand replacement system in an embodiment of the present invention;

[0039] Figure 4 This is a BB view of the mill stand replacement system in an embodiment of the present invention;

[0040] Figure 5 This is a CC view of the mill stand replacement system in an embodiment of the present invention;

[0041] Figure 6 This is a DD view of the mill stand replacement system in an embodiment of the present invention;

[0042] Figure 7 This is an EE rotating view of the mill stand replacement system in an embodiment of the present invention;

[0043] Figure 8 This is a FF rotating view of the mill stand replacement system in an embodiment of the present invention;

[0044] Figure 9 This is a simplified schematic diagram of a cross-pass transport vehicle in an embodiment of the present invention;

[0045] Figure 10 This is a simplified schematic diagram of the No. 1 lateral moving vehicle in this embodiment of the invention;

[0046] Figure 11 This is a simplified schematic diagram of the No. 2 lateral moving vehicle in this embodiment of the invention;

[0047] In the diagram, O1 is the online rolling mill station; O2 is the stand changing station; O3 is the first station of transport vehicle #1; O4 is the second station of transport vehicle #1; O5 is the first station of transport vehicle #2; O6 is the roll changing station; 1 is the push-pull cylinder mechanism #1; 2 is the online mill base; 3 is the online traverse device; 4 is the push-pull cylinder mechanism #2; 5 is the cross-span transport vehicle; 6 is the push-pull cylinder mechanism #3; 7 is the traverse vehicle #1; 8 is the offline mill base; 9 is the traverse vehicle #2; 10 is the mill base in the roll removal area; 11 is the push-pull cylinder mechanism #4; 12 is the left roll changing device; 13 is the right roll changing device; 14 is the old mill stand; 15 is the new mill stand; 101 is the first cylinder head; 102 is the first bearing housing; 103 is the first base; 1 04. Push-pull cylinder #1; 105. First tail support; 201. First rolling mill base; 202. First base locking block; 203. First frame locking block; 204. Bottom slide plate; 205. First trunnion; 206. Pin; 207. Shaft end baffle; 301. Transverse movement device base; 302. Top slide plate; 401. Second cylinder head; 402. Second bearing seat; 403. Second base; 404. Push-pull cylinder #2; 405. Second tail support; 406. Second cylinder head wheel; 501. First geared motor; 502. First coupling; 503. First drive sprocket; 504. First guide rail; 505. First transport chain; 506. Second guide rail; 507. First driven sprocket; 508. First transport vehicle base; 509, U-shaped hook; 601, third cylinder head; 602, third bearing seat; 603, third base; 604, #3 push-pull cylinder; 605, third tail support; 606, third cylinder head wheel; 701, second geared motor; 702, second coupling; 703, second drive sprocket; 704, first left guide wheel assembly; 705, second transport chain; 706, first right guide wheel assembly; 707, second driven sprocket; 708, first transverse vehicle base; 709, first guide wheel synchronous shaft; 801, left base; 802, right base; 901, third geared motor; 902, third coupling; 903, third drive sprocket; 904, second left guide wheel assembly; 905, third... Transport chain; 906, Second right guide wheel assembly; 907, Third driven sprocket; 908, Second transverse carriage base; 909, Second guide wheel synchronous shaft; 1001, Second rolling mill base; 1002, Second base locking block; 1003, Second frame locking block; 1101, Fourth cylinder head; 1102, Fourth bearing seat; 1103, Fourth base; 1104, No. 4 push-pull cylinder; 1105, Fourth tail support; 1106, Fourth cylinder head wheel; 1401, First wheel; 1402, First U-shaped hook trunnion; 1403, First upper roll; 1404, First lower roll; 1501, Second wheel; 1502, Second U-shaped hook trunnion; 1503, Second upper roll; 1504, Second lower roll. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings 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 orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] like Figure 1-8 As shown in the embodiment of the invention, a mill stand replacement system in a compact factory building is provided. An offline area and a roll removal area are arranged on the side of the main motor of the mill, forming a non-linear layout. The mill stand replacement includes six stations: online rolling station O1, stand replacement station O2, first station of transport vehicle #1 O3, second station of transport vehicle #1 O4, first station of transport vehicle #2 O5, and roll replacement station O6. Among them, online rolling station O1 and stand replacement station O2 are located in the online area; first station of transport vehicle #1 O3, second station of transport vehicle #1 O4, and first station of transport vehicle #2 O5 are located in the offline area; and roll replacement station O6 is located in the roll removal area.

[0051] Online rolling station O1 and stand changing station O2 are arranged along the rolling center line A, separated by a preset distance. Stand changing station O2 and the first station O3 of transport vehicle #1 are arranged along the center line B of the first stand changing station, separated by a preset distance. The rolling center line A is perpendicular to the center line B of the first stand changing station. Stand changing station O2 is located at the intersection of the rolling center line A and the center line B of the first stand changing station.

[0052] The first station O3 and the second station O4 of transport vehicle #1 are arranged along the first transverse center line E, separated by a predetermined distance. The first transverse center line E is parallel to the rolling center line A and perpendicular to the stand change station center line B. The first station O3 of transport vehicle #1 is located at the intersection of the first transverse center line E and the stand change station center line B. The second station O4 of transport vehicle #1 is located at the intersection of the first transverse center line E and the second stand change station center line C.

[0053] The first station O5 of transport vehicle #2 and the roll changing station O6 are arranged along the second transverse center line F, separated by a preset distance. The second transverse center line F is parallel to the rolling center line A and perpendicular to the stand changing station center line B. The first station O5 of transport vehicle #2 is located at the intersection of the second transverse center line F and the second stand changing station center line C. The roll changing station O6 is located at the intersection of the second transverse center line F and the roll changing station center line D.

[0054] When replacing the old mill stand 14, it first starts from the online rolling station O1, passes through O2-O3-O4 in sequence, and then reaches the offline area O4 through an inverted Z-shaped motion trajectory. When the new mill stand 15 is in place, the assembled new mill stand 15 starts from the roll changing station O6, passes through O5-O4 in sequence, and then reaches the offline area O4 through an inverted L-shaped motion trajectory. Then it starts from O4, passes through O3-O2-O1 in sequence, and then reaches the online rolling station O1 through an inverted Z-shaped motion trajectory. The replacement operation of the old mill stand 14 continues, starting from the offline area O4, passing through O5-O6 in sequence, and then reaching the roll changing station O6 through an inverted L-shaped motion trajectory.

[0055] The equipment involved in the above replacement system includes: 1# push-pull cylinder mechanism 1, online mill base 2, online traverse device 3, 2# push-pull cylinder mechanism 4, cross-span transport vehicle 5, 3# push-pull cylinder mechanism 6, 1# traverse vehicle 7, offline mill base 8, 2# traverse vehicle 9, mill base in roll removal area 10, 4# push-pull cylinder mechanism 11, left roll replacement device 12, right roll replacement device 13, old mill stand 14, and new mill stand 15.

[0056] The push-pull cylinder mechanism 1 is connected to the online rolling mill base 2. The old rolling mill stand 14 is fixed on the online rolling mill base 2. The online rolling mill base 2 is placed above the online transverse moving device 3 and moves freely along the rolling center line A, moving from the online rolling station O1 to the stand changing station O2.

[0057] The cross-transport vehicle 5 and the online transverse movement device 3 are arranged perpendicularly (the intersection is the stand changing station O2). The #2 push-pull cylinder mechanism 4 and the #3 push-pull cylinder mechanism 6 are located at both ends of the cross-transport vehicle 5, and can connect to the old rolling mill stand 14, so that the old rolling mill stand 14 can move along the direction B perpendicular to the rolling center line, from the stand changing station O2 to the first station O3 of the #1 transport vehicle.

[0058] The 1# transverse transfer car 7 and the cross-transfer car 5 are arranged perpendicularly (the intersection position is the first station O3 of the 1# transport car). The 1# transverse transfer car 7 is connected to the old rolling mill stand 14, so that the old rolling mill stand 14 can move along the first transverse transfer center line E, from the first station O3 of the 1# transport car to the second station O4 of the 1# transport car.

[0059] The 2# transverse transfer car 9 is arranged in parallel with the 1# transverse transfer car 7 (the parallel position on the 1# transverse transfer car 7 is the second station O4 of the 1# transport car, and the parallel position on the 2# transverse transfer car 9 is the first station O5 of the 2# transport car). The 2# transverse transfer car 9 is connected to the old mill stand 14, so that the old mill stand 14 can move along the second transverse center line F, from the first station O5 of the 2# transport car to the roll changing station O6, where the old rolls are replaced.

[0060] After the rolls are replaced, the new mill stand 15 moves along the opposite path to the old mill stand 14, from the roll changing station O6 to the first station O5 of the second transport car using the 2# traverse car 9, then moves from the second station O4 of the first transport car to the first station O3 of the first transport car using the 1# traverse car 7, then moves from the first station O3 of the first transport car to the stand changing station O2 using the cross-pass transport car 5, and finally moves from the stand changing station O2 to the online rolling station O1 using the online traverse device 3.

[0061] Specifically, the specific structures of the above-mentioned devices are as follows:

[0062] The #1 push-pull cylinder mechanism 1 includes a first cylinder head 101, a first bearing seat 102, a first base 103, a #1 push-pull cylinder 104, and a first tail support 105. The bottom of the first tail support 105 is anchored to the foundation by bolts, and the #1 push-pull cylinder 104 is placed on its top. The first tail support 105 is used to support the tail section of the #1 push-pull cylinder 104. The #1 push-pull cylinder 104 is supported and fixed near the cylinder head end by the first bearing seat 102. The first bearing seat 102 is fastened to the top of the first base 103 by bolts and a stop block. The first base 103 is a welded steel structure. Its bottom is anchored to the foundation by bolts, while its left side is connected to the side upright plate of the transverse movement device base 301 by bolts. The first cylinder head 101 is connected to the first trunnion 205 of the online rolling mill base 2 by a pin 206.

[0063] The online mill base 2 includes a first mill base 201, a first base locking block 202, a first frame locking block 203, a bottom slide plate 204, a first trunnion 205, a pin 206, and a shaft end baffle 207. The first mill base 201 is a welded structural component, with first frame locking blocks 203 on its top, distributed on both sides of the first mill base 201, with 2 sets on each side, for a total of 4 sets, which can lock and fix the old mill frame 14 (new mill frame 15) onto the online mill base 2; the bottom of the first mill base 201 has first base locking blocks 202, whose... The first mill base 201 is distributed on both sides, with two sets on each side for a total of four sets, which can lock and fix the online mill base 2 to the online transverse device 3; the bottom of the first mill base 201 is also provided with a bottom slide plate 204, with one set on each side for a total of two sets, which directly contact the top slide plate 302 on the upper end face of the online transverse device 3; the first trunnion 205 is welded to the right side upright plate of the first mill base 201, and the first trunnion 205 is connected to the first cylinder head 101 by a pin 206. The pin 206 is provided with a shaft end baffle 207 to prevent the pin 206 from popping out.

[0064] The online transverse movement device 3 includes a transverse movement device base 301 and a top slide plate 302. The bottom of the transverse movement device base 301 is anchored to the foundation by bolts. A set of top slide plates 302 are provided on each side of the upper end face of the transverse movement device base 301, which directly contact the bottom slide plate 204 on the lower end face of the online mill base 2, so that the online mill base 2 can be placed on the online transverse movement device 3 and move freely.

[0065] The #2 push-pull cylinder mechanism 4 includes a second cylinder head 401, a second bearing seat 402, a second base 403, a #2 push-pull cylinder 404, a second tail support 405, and a second cylinder head wheel 406. The bottom of the second tail support 405 is bolted to the foundation, and the #2 push-pull cylinder 404 is placed on top of it. The second tail support 405 supports the tail section of the #2 push-pull cylinder 404. The end of the #2 push-pull cylinder 404 near the cylinder head is supported and fixed by the second bearing seat 402, which is fastened to the second base by bolts and a stop block. The top of the base 403 and the bottom of the second base 403 are bolted to the foundation; the second cylinder head 401 adopts a U-shaped hook structure with the notch facing upward, which facilitates connection with the first U-shaped hook trunnion 1402 (second U-shaped hook trunnion 1502) with the bottom notch facing downward of the old rolling mill stand 14 (new rolling mill stand 15); a second cylinder head wheel 406 is set near the bottom of the second cylinder head 401, with one set on each side and two sets in total. The second cylinder head wheel 406 can roll forward above the first guide rail 504 and the second guide rail 506.

[0066] like Figure 9As shown, the cross-pass transport vehicle 5 includes a first reduction motor 501, a first coupling 502, a first drive sprocket 503, a first guide rail 504, a first transport chain 505, a second guide rail 506, a first driven sprocket 507, a first transport vehicle base 508, and a U-shaped hook 509. The first reduction motor 501 provides driving force, driving the first drive sprocket 503 to rotate through the first coupling 502. The two ends of the first transport chain 505 are respectively engaged with the first drive sprocket 503 and the first driven sprocket 507, and the first driven sprocket 507 rotates passively with the first transport chain 505. The bottom of the first transport vehicle base 508 is fixed to the foundation, and the first guide rail 504 is fixed to the first drive sprocket 505 on both sides of the top with bolts. The first guide rail 504 and the second guide rail 506 are used. By adjusting the tension of the first driven sprocket 507, the U-shaped hook 509 with the notch facing upward can be raised and lowered. After the U-shaped hook 509 is raised, it can be connected with the first U-shaped hook trunnion 1402 (second U-shaped hook trunnion 1502) of the old rolling mill stand 14. The first reduction motor 501 drives the first drive sprocket 503 and drives the first wheel 1401 (second wheel 1501) at the bottom of the old rolling mill stand 14 (new rolling mill stand 15) to roll forward above the first guide rail 504 and the second guide rail 506 through the first transport chain 505, so as to realize the transport of the old rolling mill stand 14 (new rolling mill stand 15) above the cross transport vehicle 5.

[0067] The 3# push-pull cylinder mechanism 6 includes a third cylinder head 601, a third bearing seat 602, a third base 603, a 3# push-pull cylinder 604, a third tail support 605, and a third cylinder head wheel 606. Since the structure and functional principle of the 3# push-pull cylinder mechanism 6 are similar to those of the 2# push-pull cylinder mechanism 4, they will not be described in detail here.

[0068] like Figure 10As shown, the No. 1 transverse transfer vehicle 7 includes a second reduction motor 701, a second coupling 702, a second drive sprocket 703, a first left guide wheel assembly 704, a second transport chain 705, a first right guide wheel assembly 706, a second driven sprocket 707, a first transverse transfer vehicle base 708, and a first guide wheel synchronous shaft 709. The second reduction motor 701 provides driving force, driving the second drive sprocket 703 to rotate through the second coupling 702. The two ends of the second transport chain 705 are respectively engaged with the second drive sprocket 703 and the second driven sprocket 707, and the second driven sprocket 707 rotates passively with the second transport chain 705. The bottom of the first transverse transfer vehicle base 708 is fixed to the foundation, and the top two sides are respectively connected by bolts. The first left guide wheel group 704 and the first right guide wheel group 706 are fixed. The first left guide wheel group 704 and the first right guide wheel group 706 are connected by the first guide wheel synchronous shaft 709 to ensure the synchronicity of the rotation of the two guide wheels. The offline rolling mill base 8 is placed on the top of the first left guide wheel group 704 and the first right guide wheel group 706. The second reduction motor 701 drives the second drive sprocket 703 and drives the offline rolling mill base 8 to move above the No. 1 transverse car 7 through the second transport chain 705, so as to realize the transportation of the old rolling mill stand 14 (new rolling mill stand 15). The first left guide wheel group 704 and the first right guide wheel group 706 are passively rotated as the offline rolling mill base 8 slides, and support the offline rolling mill base 8 to move forward.

[0069] The offline mill base 8 consists of two parts: a left base 801 and a right base 802. The left base 801 is used to place the old mill stand 14, and the right base 802 is used to place the new mill stand 15. The offline mill base 8 is the overlapping area of ​​the old mill stand 14 and the new mill stand 15 during the replacement process, which is crucial to the mill stand replacement process.

[0070] like Figure 11 As shown, the #2 transverse transfer vehicle 9 includes a third reduction motor 901, a third coupling 902, a third drive sprocket 903, a second left guide wheel assembly 904, a third transport chain 905, a second right guide wheel assembly 906, a third driven sprocket 907, a second transverse transfer vehicle base 908, and a second guide wheel synchronous shaft 909. Since the structure and functional principle of the #2 transverse transfer vehicle 9 are largely similar to those of the #1 transverse transfer vehicle 7, they will not be described in detail here. The difference from the #1 transverse transfer vehicle 7 lies in the second left guide wheel assembly 904 and the second right guide wheel... The top of the roll removal area mill base 10 is placed to support the roll removal area mill base 10. The third reduction motor 901 drives the third drive sprocket 903 and drives the roll removal area mill base 10 to move above the No. 2 transverse car 9 through the third transport chain 905, so as to realize the transport of the old mill stand 14 (new mill stand 15). The second left guide wheel group 904 and the second right guide wheel group 906 are passively rotated as the roll removal area mill base 10 slides, and support the roll removal area mill base 8 to move forward.

[0071] The roll removal area mill base 10 includes a second mill base 1001, a second base locking block 1002, and a second frame locking block 1003. The second mill base 1001 is a welded structural component. The second frame locking blocks 1003 are installed on the top of the second mill base 1001 and are distributed on both sides of the second mill base 1001, with 2 sets on each side for a total of 4 sets. These blocks can lock and fix the old mill frame 14 (new mill frame 15) onto the roll removal area mill base 10. The second base locking blocks 1002 are installed at the bottom of the second mill base 1001 and are distributed on both sides of the second mill base 1001, with 2 sets on each side for a total of 4 sets. These blocks can lock and fix the roll removal area mill base 10 onto the center line of the roll changing station.

[0072] The 4# push-pull cylinder mechanism 11 includes a fourth cylinder head 1101, a fourth bearing seat 1102, a fourth base 1103, a 4# push-pull cylinder 1104, a fourth tail support 1105, and a fourth cylinder head wheel 1106. Since the structure and functional principle of the 4# push-pull cylinder mechanism 11 are similar to those of the 2# push-pull cylinder mechanism 4 (3# push-pull cylinder mechanism 6), they will not be described in detail here.

[0073] The left roll changing device 12 and the right roll changing device 13 are arranged symmetrically. The two work together to complete the roll changing work, that is, to disassemble the first upper roll 1403 and the first lower roll 1404 of the old mill stand 14, and to assemble the second upper roll 1503 and the second lower roll 1504 of the new mill stand 15.

[0074] The old mill stand 14 (new mill stand 15) includes a first wheel 1401 (second wheel 1501), a first U-shaped hook trunnion 1402 (second U-shaped hook trunnion 1502), a first upper roll 1403 (second upper roll 1503), and a first lower roll 1404 (second lower roll 1504). The first wheel 1401 (second wheel 1501) is installed at the bottom of the old mill stand 14 (new mill stand 15), with two sets on each side, for a total of four sets, to support the old mill stand 14 (new mill stand 15). The first wheel 1401 (second wheel 1501) can roll forward above the first guide rail 504 and the second guide rail 506. The first U-shaped hook trunnion 1402 (second U-shaped hook trunnion 1502) is welded and fixed. On both sides of the old mill stand 14 (new mill stand 15), there are two sets, one on each side, located in the middle position near the upper part of the first wheel 1401 (second wheel 1501). They are machined with downward notches and can be connected to the second cylinder head 401 (U-shaped hook head 509, third cylinder head 601, fourth cylinder head 1101, etc.) with the notches facing upwards. The first upper roll 1403 (second upper roll 1503) and the first lower roll 1404 (second lower roll 1504) are installed in the middle of the old mill stand 14 (new mill stand 15) for rolling billets of different specifications. The rolling height between the first upper roll 1403 (second upper roll 1503) and the first lower roll 1404 (second lower roll 1504) is +H.

[0075] The mill stand replacement system in the compact factory building described in the above embodiments is mainly used in the hot rolling production line steel rolling workshop. It has obvious advantages in terms of factory floor space and capital investment, and is especially suitable for small and medium-sized steel rolling workshops, as well as large steel rolling workshops.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rolling mill stand replacement system for a compact factory building, characterized in that, include: Online rolling station O1 and stand change station O2 are located in the online area; The first workstation O3 of transport vehicle #1, the second workstation O4 of transport vehicle #1, and the first workstation O5 of transport vehicle #2 are located in the offline area; Roll replacement station O6 is located in the roll removal area; An online traverse device is located between the online rolling station O1 and the stand changing station O2; an online mill base is provided above the online traverse device, the online mill base is used to fix the mill stand, the online mill base is connected to a push-pull cylinder mechanism No. 1, and can slide on the online traverse device to realize the movement from the online rolling station O1 to the stand changing station O2; A cross-span transport vehicle operates between the stand changing station O2 and the first station O3 of the No. 1 transport vehicle; the two ends of the cross-span transport vehicle are respectively connected to the No. 2 push-pull cylinder mechanism and the No. 3 push-pull cylinder mechanism, both of which can be connected to the rolling mill stand, so as to realize the movement of the rolling mill stand from the stand changing station O2 to the first station O3 of the No. 1 transport vehicle; A 1# transverse transfer car operates between the first station O3 and the second station O4 of the 1# transport vehicle; the 1# transverse transfer car is connected to the rolling mill stand, enabling the rolling mill stand to move from the first station O3 of the 1# transport vehicle to the second station O4 of the 1# transport vehicle; The offline rolling mill base is located at the second workstation O4 of the No. 1 transport vehicle and the first workstation O5 of the No. 2 transport vehicle; the offline rolling mill base includes a left base for placing the old rolling mill stand and a right base for placing the new rolling mill stand, which can realize the replacement of the old rolling mill stand and the new rolling mill stand; A 2# transverse transfer vehicle operates between the first station O5 of the 2# transport vehicle and the roll changing station O6; the 2# transverse transfer vehicle is connected to the mill stand, enabling the mill stand to move from the first station O5 of the 2# transport vehicle to the roll changing station O6; Offline and roll removal areas are arranged on the side of the main motor of the rolling mill, forming a non-linear layout. Online rolling station O1 and stand changing station O2 are arranged along the rolling centerline A, spaced at a preset distance. Stand changing station O2 and the first station O3 of transport vehicle #1 are arranged along the centerline B of the first stand changing station, spaced at a preset distance. The rolling centerline A is perpendicular to the centerline B of the first stand changing station. Stand changing station O2 is located at the intersection of the rolling centerline A and the centerline B of the first stand changing station. The first station O3 and the second station O4 of transport vehicle #1 are arranged along the first transverse centerline E, spaced at a preset distance. The first transverse centerline E is parallel to the rolling centerline A and adjacent to the stand changing station. The center line B of the workstation is perpendicular to the center line. The first workstation O3 of transport vehicle #1 is located at the intersection of the first transverse center line E and the center line B of the stand change workstation. The second workstation O4 of transport vehicle #1 is located at the intersection of the first transverse center line E and the center line C of the second stand change workstation. The first workstation O5 and the roll change workstation O6 of transport vehicle #2 are arranged along the second transverse center line F, separated by a preset distance. The second transverse center line F is parallel to the rolling center line A and perpendicular to the center line B of the stand change workstation. The first workstation O5 of transport vehicle #2 is located at the intersection of the second transverse center line F and the center line C of the second stand change workstation. The roll change workstation O6 is located at the intersection of the second transverse center line F and the center line D of the roll change workstation.

2. The rolling mill stand replacement system in a compact factory building according to claim 1, characterized in that, The online mill base includes a first mill base, a first base locking block, a first frame locking block, a bottom slide plate, a first trunnion, a pin, and a shaft end baffle; The first mill base is a welded structural component, with a first frame locking block on its top, distributed on both sides of the first mill base; the first mill base has a first base locking block on its bottom, distributed on both sides of the first mill base; the bottom of the first mill base is also provided with the bottom sliding plate, which directly contacts the top sliding plate on the upper surface of the online transverse device; the first trunnion is welded to the right side upright plate of the first mill base, and the first trunnion is connected to the first cylinder head of the No. 1 push-pull cylinder mechanism by a pin, with a shaft end baffle provided on the pin.

3. The rolling mill stand replacement system in a compact factory building according to claim 1, characterized in that, The online transverse movement device includes a transverse movement device base and a top sliding plate; the bottom of the transverse movement device base is anchored to the foundation by bolts, and a set of top sliding plates is provided on each side of the upper end face of the transverse movement device base, which directly contacts the bottom sliding plate of the lower end face of the online rolling mill base.

4. The rolling mill stand replacement system in a compact factory building according to claim 1, characterized in that, The overpass transport vehicle includes a first reduction motor, a first coupling, a first drive sprocket, a first guide rail, a first transport chain, a second guide rail, a first driven sprocket, a first transport vehicle base, and a U-shaped hook. The first geared motor provides driving force, driving the first drive sprocket to rotate through the first coupling. The two ends of the first transport chain are respectively engaged with the first drive sprocket and the first driven sprocket, and the first driven sprocket rotates passively with the first transport chain. The bottom of the first transport vehicle base is fixed to the foundation, and the first guide rail and the second guide rail are respectively fixed to the top two sides of the first transport vehicle base with bolts. By adjusting the tension of the first driven sprocket, the U-shaped hook with the notch facing upward can be raised and lowered. After the U-shaped hook is raised, it can be connected to the U-shaped hook trunnion of the rolling mill frame. The first geared motor drives the first drive sprocket, and drives the rolling mill frame to roll forward above the first guide rail and the second guide rail through the first transport chain.

5. The rolling mill stand replacement system in a compact factory building according to claim 1, characterized in that, The No. 1 transverse transfer vehicle includes a second reduction motor, a second coupling, a second drive sprocket, a first left guide wheel assembly, a second transport chain, a first right guide wheel assembly, a second driven sprocket, a first transverse transfer vehicle base, and a first guide wheel synchronous shaft; The second geared motor provides driving force, which drives the second drive sprocket to rotate through the second coupling. The two ends of the second transport chain are respectively engaged with the second drive sprocket and the second driven sprocket, and the second driven sprocket rotates passively with the second transport chain. The bottom of the first transverse vehicle base is fixed to the foundation, and the first left guide wheel group and the first right guide wheel group are respectively fixed to the top two sides of the first transverse vehicle base with bolts. The first left guide wheel group and the first right guide wheel group are connected through the first guide wheel synchronous shaft to ensure the synchronicity of the rotation of the two guide wheels. The offline mill base is placed on top of the first left guide wheel group and the first right guide wheel group; the second reduction motor drives the second drive sprocket and drives the offline mill base to move above the No. 1 transverse car through the second transport chain. The first left guide wheel group and the first right guide wheel group are passively rotated as the offline mill base slides and support the offline mill base to move forward.

6. The rolling mill stand replacement system in a compact factory building according to claim 1, characterized in that, The No. 2 transverse transfer vehicle includes a third reduction motor, a third coupling, a third drive sprocket, a second left guide wheel assembly, a third transport chain, a second right guide wheel assembly, a third driven sprocket, a second transverse transfer vehicle base, and a second guide wheel synchronous shaft; The third geared motor provides driving force, which drives the third drive sprocket to rotate through the third coupling. The two ends of the third transport chain are respectively engaged with the third drive sprocket and the third driven sprocket, and the third driven sprocket rotates passively with the third transport chain. The bottom of the second transverse trolley base is fixed to the foundation, and the second left guide wheel group and the second right guide wheel group are respectively fixed to the top two sides of the second transverse trolley base with bolts. The second left guide wheel group and the second right guide wheel group are connected by the second guide wheel synchronous shaft to ensure the synchronicity of the rotation of the two guide wheels. The top of the second left guide wheel group and the second right guide wheel group is placed on the roll removal area mill base. The third reduction motor drives the third drive sprocket and drives the roll removal area mill base to move above the No. 2 transverse car through the third transport chain. The second left guide wheel group and the second right guide wheel group are passively rotated as the roll removal area mill base slides and support the roll removal area mill base to move forward.

7. A rolling mill stand replacement system in a compact factory building according to claim 1, characterized in that, The No. 1 push-pull cylinder mechanism includes a first cylinder head, a first bearing seat, a first base, a No. 1 push-pull cylinder, and a first tail support; The bottom of the first tail support is anchored to the foundation by bolts, and the top of the first tail support is where the No. 1 push-pull cylinder is placed. The first tail support is used to support the tail section of the No. 1 push-pull cylinder. The end of the No. 1 push-pull cylinder near the cylinder head is supported and fixed by the first bearing seat. The first bearing seat is fastened to the top of the first base by bolts and a stop block. The first base is a welded steel structure. Its bottom is anchored to the foundation by bolts, while its left side is connected to the side upright plate of the transverse movement device base by bolts. The first cylinder head is connected to the first trunnion of the online rolling mill base by a pin.

8. A rolling mill stand replacement system in a compact factory building according to claim 4, characterized in that, The #2 push-pull cylinder mechanism includes a second cylinder head, a second bearing seat, a second base, a #2 push-pull cylinder, a second tail support, and a second cylinder head wheel. The bottom of the second tail support is bolted to the foundation, and the #2 push-pull cylinder is placed on top of it. The second tail support supports the tail section of the #2 push-pull cylinder. The end of the #2 push-pull cylinder near the cylinder head is supported and fixed by the second bearing seat. The second bearing seat is fastened to the top of the second base by bolts and a stop block. The bottom of the second base is bolted to the foundation. The second cylinder head adopts a U-shaped hook structure with the notch facing upwards, which facilitates connection with the U-shaped hook trunnion with the notch facing downwards at the bottom of the rolling mill frame. A second cylinder head wheel is provided near the bottom of the second cylinder head, and the second cylinder head wheel can roll forward above the first guide rail and the second guide rail. The No. 3 push-pull cylinder mechanism includes a third cylinder head, a third bearing seat, a third base, a No. 3 push-pull cylinder, a third tail support, and a third cylinder head wheel. The bottom of the third tail support is bolted to the foundation, and the No. 3 push-pull cylinder is placed on its top. The third tail support is used to support the tail section of the No. 3 push-pull cylinder. The end of the No. 3 push-pull cylinder near the cylinder head is supported and fixed by the third bearing seat. The third bearing seat is fastened to the top of the third base by bolts and a stop block. The bottom of the third base is bolted to the foundation. The third cylinder head adopts a U-shaped hook structure with the notch facing upwards, which facilitates connection with the U-shaped hook trunnion with the notch facing downwards at the bottom of the rolling mill stand. The third cylinder head wheel is set near the bottom of the third cylinder head, and the third cylinder head wheel can roll forward above the first guide rail and the second guide rail.

9. A rolling mill stand replacement system in a compact factory building according to claim 6, characterized in that, The mill base in the roll splitting area includes a second mill base, a second base locking block, and a second frame locking block. The second mill base is a welded structural component, with the second frame locking block installed on its top and distributed on both sides of the second mill base. The second base locking block is installed at the bottom of the second mill base and is distributed on both sides of the second mill base.

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