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41. 发明专利

JPS5510331A ROLL CHANGING DEVICE OF ROLLING MILL 失效
公开(公告)号：JPS5510331A
公开(公告)日：1980-01-24
申请号：JP8302778
申请日：1978-07-10
申请人： HITACHI LTD
发明人： CHINBE HIROSHI , SAKANAKA TAKAO
IPC分类号： B21B13/02 , B21B31/10
摘要： PURPOSE:To achieve safer and quicker roll changing operations by connecting the movable truck of the roll changing device of a rolling mill removably to the extension part of a moving device on the side opposing to the rolling mill side. CONSTITUTION:In changing an intermediate roll 2 and work roll 1, a movable truck 4 and the extension part 13 of a lower truck 12 are connected by means of a pin 7 and the lower truck 4 is guided to the roll containing position on a movable floor plate 14 along rails 8. The rolls 1, 2 are then pushed out onto the truck 4 by a push-out device not illustrated and the floor plate 14 is connected by means of a pin 15 to the end part of the truck 12 and is retreated to the specified position. To change a lower back roll 3, the pins 7, 15 are removed and the truck 12 is engaged with the roll 3. The roll 3 is then drawn out from the rolling mill, the stool 19 is placed, the truck is again moved to the direction of the rolling mill, the upper back roll 3 is superposed and is drawn to the outside, thereafter such operations are repeated to complete the exchanging of the old and new roll. The notch part of the pin hole of the floor plate 14 of ordinary methods is eliminated and the danger of the operators and the laboriousness of operations are eliminated.

42. 发明专利

JPS5379755A SPINDLE COUPLING SUPPORT APPARATUS FOR ROLL REARRANGEMENT 失效
公开(公告)号：JPS5379755A
公开(公告)日：1978-07-14
申请号：JP15498476
申请日：1976-12-24
申请人： HITACHI LTD
发明人： SAKANAKA TAKAO
IPC分类号： B21B35/14

43. 发明专利

JP2003117603A MULTI-ROW ROLLING MILL, ITS USE METHOD AND ROLLING EQUIPMENT 审中-公开
公开(公告)号：JP2003117603A
公开(公告)日：2003-04-23
申请号：JP2001314697
申请日：2001-10-12
申请人： HITACHI LTD
发明人： HORII KENJI , GOTO AKIRA , KOBAYASHI HIDEO , KASAI SHUNSAKU , KOBAYASHI YUJIRO , SAKANAKA TAKAO , FUJII MOTOTSUNA
IPC分类号： B21B1/22 , B21B1/24 , B21B1/26 , B21B1/32 , B21B13/02 , B21B13/14 , B21B29/00 , B21B31/02 , B21B31/10 , B21B31/22 , B21B31/30 , B21B33/00 , B21B39/16
摘要： PROBLEM TO BE SOLVED: To improve restoration when the trouble of a rolling mill is developed besides a distance between roll groups is shortened. SOLUTION: This rolling mill is a multi-row rolling mill which is provided with at least two roll groups including at least a pair of work rolls in one housing and constituted so that, when performing one pass of a rolled stock, the rolled stock is rolled with respective work rolls and removing means for removing the rolled stock jammed between respective roll groups are provided. Consequently, besides the distance between the roll groups is shortened, maintenance property is improved.

44. 发明专利

JPH11702A ROLLING MILL, ROLLING EQUIPMENT AND ROLLING METHOD 失效
公开(公告)号：JPH11702A
公开(公告)日：1999-01-06
申请号：JP15064497
申请日：1997-06-09
申请人： HITACHI LTD
发明人： YAMAMOTO AKIHIRO , SAKANAKA TAKAO , HORII KENJI
IPC分类号： B21B29/00 , B21B1/26 , B21B13/02 , B21B31/02 , B21B31/07 , B21B33/00
摘要： PROBLEM TO BE SOLVED: To enable heavy reduction, to reduce the number of hot rolling stands and to make equipment a small scale by providing a post between roll groups in a housing of a rolling mill such as a multistage twin mill or tripple mill and connecting the post to the housing providing the degree of freedom in at least one place of the post in the direction of reduction. SOLUTION: A through hole 13 for engaging with the post 12 is provided on the top part of the housing 1 of a 4-stage twin mill and similarly a blind hole 14 on the bottom part. The post 12 is fit into this hole 13, erected and connected so as to have the degree of freedom to the housing in the direction of reduction. The bearing boxes 15a, 16a, 15b, 16b of upper and lower work rolls and bearing boxes 19a, 20a, 19b, 20b of upper and lower back-up rolls are held between the housing 1 and the post 12 and structured so as to support the bearing boxes in the rolling direction without being affected by deformation of the housing 1 due to rolling load. The rolling mill is may be a multistage mill other than the 4-stage system.

45. 发明专利

JPH08290207A ROLLING MILL 失效
公开(公告)号：JPH08290207A
公开(公告)日：1996-11-05
申请号：JP9271395
申请日：1995-04-18
申请人： HITACHI LTD , NISSHIN STEEL CO LTD
发明人： MAEKAWA YOSHIHIRO , SAKANAKA TAKAO , YOSHIMURA YASUTSUGU , KAGA SHINICHI , HORII KENJI , ONO HIROSHI , WATANABE TSUTOMU
IPC分类号： B21B31/02 , B21B13/14 , B21B31/10
摘要： PURPOSE: To provide a rolling mill having a roll rearranging mechanism simple and efficient in the design of the rolling mill and capable of being applied to a work roll cross type rolling mill and a roll shift rolling mill. CONSTITUTION: In this rolling mill having the roll rearranging mechanism, a freely extendable and contractable supporting device 1 and an upper supporting rod 2 are provided between upper and lower work roll chocks 9a and 9b, a lower supporting rod 3 is provided in a lower work roll chock 9b, and a preset load value is set in the supporting device 1. Consequently, at the time of rearrangement, the supporting device keeps initial preset length, and the roll can be rearranged while integrating upper and lower roll assemblies with each other in a state a gap is provided between upper and lower work rolls 10a and 10b. At the time of rolling, a distance between the upper and lower work rolls can be changed in accordance with a rolling reduction by a sliding structure between the upper surface part of the lower roll chock and the upper supporting rod and the elastic deformation of the supporting device, the upper and lower work rolls can be shifted in axial direction, and the work roll cross rolling can be performed.

46. 发明专利

JPH08174035A SYSTEM FOR FEEDING LUBRICATING OIL BETWEEN ROLLS OF WORK ROLL CROSS ROLLING MILL 失效
公开(公告)号：JPH08174035A
公开(公告)日：1996-07-09
申请号：JP32734194
申请日：1994-12-28
申请人： HITACHI LTD , NISSHIN STEEL CO LTD
发明人： YOSHIMURA YASUTSUGU , YOSHIMOTO KENICHI , KAGA SHINICHI , SAKANAKA TAKAO , ONO HIROSHI , NAKAGAMI HIROSHI , SHIGA YUKINARI , WATANABE TSUTOMU
IPC分类号： B21B27/10 , B21B1/22 , B21B13/14 , B21B31/16 , B21B37/00 , B21B37/28 , B21B37/32 , B21B37/38 , B21B45/02
摘要： PURPOSE: To totally control the rolling condition related to the lubrication by controlling the thrust coefficient (the coefficient of friction) in the lubrication between a reinforcing roll and a working roll of a work roll cross rolling mill. CONSTITUTION: When the thrust coefficient μ calculated by a thrust coefficient arithmetic unit 64 from the thrust F obtained from thrust meters 4, 4', 5, 5' and the load P obtained by a rolling load meter 60 has the target thrust coefficient μ* and the deviation Δμ, the deviation signal is transmitted to a spray controller 15, a concentration controller 17 and an oil kind switching controller 65 in this order to control the thrust coefficient (the coefficient of thrust). The conditions where the thrust becomes excessive or troubles such as the breakage of a roll bearing are generated can be prevented, and the appropriate lubricating performance free from the vibration or slip can be obtained.

47. 发明专利

JPH0550110A ROLLING MILL, HOT ROLLING EQUIPMENT, ROLLING METHOD AND MODIFICATION OF ROLLING MILL 失效
公开(公告)号：JPH0550110A
公开(公告)日：1993-03-02
申请号：JP2095692
申请日：1992-02-06
申请人： HITACHI LTD
发明人： KAJIWARA TOSHIYUKI , SUGIYAMA TOKUJI , TAKAKURA YOSHIO , SAKANAKA TAKAO , YOSHIMURA YASUTSUGU , YASUDA KENICHI , KAGA SHINICHI
IPC分类号： B21B1/22 , B21B1/26 , B21B13/02 , B21B13/14 , B21B15/00 , B21B27/06 , B21B27/10 , B21B28/04 , B21B31/07 , B21B31/16 , B21B31/18 , B21B35/12 , B21B37/00 , B21B37/28 , B21B45/02
摘要： PURPOSE:To offer a rolling mill excellent in control capacity of sheet crown of rolled stock capable of reducing thrust acting on working rolls by a simple constitution and of which the working rolls are crossed. CONSTITUTION:The purpose is attained by constituting the back-up rolls 8 of the rolling mill so that the axial lines of those rolls are not inclined in a horizontal plane, constituting each of the working rolls 7 so that the axial lines of those working rolls can be inclined to the axial lines of those back-up rolls in a horizontal plane and providing lubricant supplying devices 1 with which lubricant is supplied between the working roll and back-up roll. By this invention, the rolling mill with a constitution that only the working rolls are crossed is realized. Because thrust that acts on the working rolls can be reduced by the action of lubricant which is supplied between the rolls, the control capacity of sheet crown of rolled stock can be sufficiently exhibited.

48. 发明专利

JPH0446649B2 失效
公开(公告)号：JPH0446649B2
公开(公告)日：1992-07-30
申请号：JP9784483
申请日：1983-06-03
申请人： HITACHI LTD
发明人： MATSUMOTO KOICHI , SAKANAKA TAKAO
IPC分类号： B21B31/10

49. 发明专利

JPH03174905A MULTISTAGE ROLLING MILL AND ROLLING METHOD 失效
公开(公告)号：JPH03174905A
公开(公告)日：1991-07-30
申请号：JP23551890
申请日：1990-09-07
申请人： HITACHI LTD
发明人： KOBAYASHI KAZUO , KAJIWARA TOSHIYUKI , SAKANAKA TAKAO , MITSUI HIROMITSU , YASUDA KENICHI
IPC分类号： B21B1/40 , B21B13/14 , B21B29/00 , B21B31/20
摘要： PURPOSE:To reduce the deflection of work rolls in the horizontal direction end to enable high-rigidity support against horizontal bend by providing support rollers with which both sides of the body part of work rolls are respectively supported on the inlet and outlet side of rolled stock and position adjusting devices with which the offset quantity of work rolls can be adjusted. CONSTITUTION:The work rolls 1 are made to be arbitrarily movable in the pass direction and both sides of the body part of roll in the area outside the max. width of the rolled stock 11 on both of the inlet and outlet side of the rolled stock of the work rolls 1 are supported by arranging the support rollers 14. Then, by making the offset quantity of the work rolls 1 adjustable by providing the position adjusting devices 5 on those support rollers 4, the work rolls are situated in a dynamically balanced position due to rolling load, driving tangent force and the difference of tension in the back and forth direction, etc. Further, the high-rigidity support against the horizontal bend of the work rolls 1 is made possible and disturbance load is prevented and rolling with which the shape of the rolled stock 11 is stabilized can be performed by arranging the bearing boxes 8 of the work rolls 1 with clearance in the horizontal direction with adjacent members.

50. 发明专利

JPH02187208A ROLL CHANGING DEVICE FOR MULTI-ROLL ROLLING MILL 失效
公开(公告)号：JPH02187208A
公开(公告)日：1990-07-23
申请号：JP270589
申请日：1989-01-11
申请人： HITACHI LTD
发明人： GOTO AKIRA , SAKANAKA TAKAO , MATSUMOTO KOICHI
IPC分类号： B21B13/02 , B21B31/10
摘要： PURPOSE:To make compact a changing device and to reduce a changing time by using a hook mounted on a roll changing driving device both as a hook for work roll changing and a hook using a stool for changing other rolls. CONSTITUTION:A roll changing truck 19 is pushed in a changing position and is connected with a rail for work and intermediate rolls in a housing 1. Then, the truck 19 is connected with a work roll changing hook to put upper and lower work rolls and upper and lower intermediate rolls on the truck 19 and to remove their rolls. A stool 17 is put on the truck 19. A hook 24 for changing is connected with a hook 25 installed on the stool 17 and the hooks 24, 25 are pushed between upper and lower reinforcing rolls by a changing driver 22 by utilizing a rail of the truck 19 and a rail 9 or a rail for intermediate roll changing. After that, the reinforcing roll is put on the stool 17. A movable frame 30 of the stool 17 moves up to put the stool 17 and a roll 6a on a lower reinforcing roll 6b being put on a rail 8. After that, the rolls 6a, 6b are put on a rail for reinforcing roll by the device 22.

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