CN113426837A - Roll shifting device of four-high mill - Google Patents
Roll shifting device of four-high mill Download PDFInfo
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- CN113426837A CN113426837A CN202110796913.9A CN202110796913A CN113426837A CN 113426837 A CN113426837 A CN 113426837A CN 202110796913 A CN202110796913 A CN 202110796913A CN 113426837 A CN113426837 A CN 113426837A
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- roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
- B21B31/06—Fastening stands or frames to foundation, e.g. to the sole plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a roll shifting device of a four-roll mill, which comprises a first roll shifting part and a second roll shifting part which are symmetrically arranged at two sides of a working roll, wherein the first roll shifting part comprises a first upper shaft and a first lower shaft; the second roll shifting part comprises a second upper shaft and a second lower shaft, a second upper locking plate is arranged on the second upper shaft, a second lower locking plate is arranged on the second lower shaft, and a second locking driving structure is connected and arranged on the second upper shaft and the second lower shaft. The first channeling roller part and the second channeling roller part are symmetrically arranged, and the locking driving structure synchronously drives the upper locking plate and the lower locking plate, so that the number of parts of the locking structure is reduced, and the working stability is improved; the whole device has simple structure and convenient maintenance and replacement.
Description
Technical Field
The invention relates to the technical field of plate strip rolling, in particular to a roll shifting device of a four-high rolling mill.
Background
When a four-high mill rolls a plate strip, the backup roll is bent and deformed due to the rolling force, and the uneven contact deformation between the backup roll and the working roll bends the working roll, so that the rolled plate strip has thickness deviation along the width direction. In order to eliminate bending deformation of a roller under the action of rolling force and reduce the transverse thickness deviation of a plate strip, a working roller shifting technology is mostly adopted in a plate strip four-high rolling mill.
The first prior art is as follows: the work roll shifting device consists of 4 substantially identical units. Each unit mainly comprises a fixed seat, a channeling body, a channeling cylinder, a locking plate, a locking cylinder and the like. The locking plate and the locking cylinder are arranged in the channeling body, the locking plate can be locked in the locking body when working under the driving of the locking cylinder, and the locking plate is opened when the roller is replaced. When the roller is shifted, the locking plate and the locking cylinder move along with the roller shifting body. The roller shifting cylinder is fixedly arranged on the fixing seat, and the roller shifting body moves in the fixing seat under the driving of the roller shifting cylinder to play a role of shifting the roller. The problems that exist are that: the channeling body moves in the square frame, and lining plates in the horizontal and vertical directions are needed, so that parts are complicated; the locking cylinder needs to move along with the shifting roller body and needs to be provided with a hose to follow up; each unit has a locking cylinder.
The second prior art is: the difference with prior art one lies in that the cylinder body of scurrying the roller jar becomes an organic whole with the fixing base, scurrys the roller body and moves along the cylinder body excircle of scurrying the roller jar on the fixing base under the drive of scurrying the roller jar, plays and scurrys the roller effect. The problems that exist are that: the structure is complex, the maintenance and replacement of hydraulic cylinder sealing elements are difficult, and the hydraulic cylinder sealing elements are basically disassembled completely; the locking cylinder needs to move along with the shifting roller body and needs to be provided with a hose to follow up; each unit has a locking cylinder.
Therefore, the inventor provides a roll shifting device of a four-high mill by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a roll shifting device of a four-high mill, which overcomes the problems in the prior art, wherein a first roll shifting part and a second roll shifting part are symmetrically arranged, and a locking driving structure synchronously drives an upper locking plate and a lower locking plate, so that the number of parts of a locking structure is reduced, and the working stability is improved; the whole device has simple structure and convenient maintenance and replacement.
The invention aims to realize the roll shifting device of the four-roll mill, which comprises a first roll shifting part and a second roll shifting part which are symmetrically arranged at two sides of a working roll, wherein the first roll shifting part comprises a first upper shaft and a first lower shaft which are arranged in parallel at intervals, a first upper locking plate is arranged on the first upper shaft, a first lower locking plate is arranged on the first lower shaft, a first locking driving structure is connected and arranged on the first upper shaft and the first lower shaft, and the first locking driving structure is used for synchronously driving the first upper locking plate and the first lower locking plate to lock or unlock the working roll; one axial ends of the first upper shaft and the first lower shaft are respectively connected with a roller shifting cylinder; the second roll shifting part comprises a second upper shaft and a second lower shaft which are arranged in parallel at intervals, a second upper locking plate is arranged on the second upper shaft, a second lower locking plate is arranged on the second lower shaft, a working roll locking space can be formed among the first upper locking plate, the first lower locking plate, the second upper locking plate and the first lower locking plate, a second locking driving structure is connected to the second upper shaft and the second lower shaft, and the second locking driving structure is used for synchronously driving the second upper locking plate and the second lower locking plate to lock or unlock the working roll; and one axial ends of the second upper shaft and the second lower shaft are respectively connected with a roller shifting cylinder.
In a preferred embodiment of the present invention, the first locking driving structure includes a first locking telescopic cylinder, the first locking telescopic cylinder is connected to a first double-sided rack, a first upper gear is disposed on a sidewall of the first upper shaft, a first lower gear is disposed on a sidewall of the first lower shaft, both the first upper gear and the first lower gear are engaged with the first double-sided rack, and the first locking telescopic cylinder can drive the first double-sided rack to move so as to drive the first upper shaft and the first lower shaft to rotate.
In a preferred embodiment of the present invention, the first locking telescopic cylinder includes a first locking cylinder barrel fixedly disposed, one end of the first locking cylinder barrel close to the working roll is hermetically and slidably disposed through a first locking cylinder rod, and the first locking cylinder rod is connected to the first double-sided rack.
In a preferred embodiment of the present invention, the first upper gear and the first lower gear are both disposed in an arc shape, the first upper gear and the first lower gear are maintained in a state of being engaged with the first double-sided rack, and circumferential lengths of the first upper gear and the first lower gear are both disposed to match a length of the first double-sided rack.
In a preferred embodiment of the present invention, the second locking driving structure includes a second locking telescopic cylinder, the second locking telescopic cylinder is connected to a second double-sided rack, a second upper shaft is provided on a side wall thereof with a second upper gear, a second lower shaft is provided on a side wall thereof with a second lower gear, both the second upper gear and the second lower gear are engaged with the second double-sided rack, and the second locking telescopic cylinder can drive the second double-sided rack to move so as to drive the second upper shaft and the second lower shaft to rotate.
In a preferred embodiment of the present invention, the second locking telescopic cylinder includes a second locking cylinder barrel fixedly disposed, one end of the second locking cylinder barrel close to the working roll is hermetically and slidably inserted into a second locking cylinder rod, and the second locking cylinder rod is connected to the second double-sided rack.
In a preferred embodiment of the present invention, the second upper gear and the second lower gear are both arranged in an arc, the second upper gear and the second lower gear are kept in a state of being engaged with the second double-sided rack, and circumferential lengths of the second upper gear and the second lower gear are both arranged to match a length of the second double-sided rack.
In a preferred embodiment of the present invention, the first locking telescopic cylinder can drive the first upper shaft and the first lower shaft to rotate circumferentially by 90 ° through the first double-sided toothed belt; the second locking telescopic cylinder can drive the second upper shaft and the second lower shaft to rotate 90 degrees in the circumferential direction through the second double-sided toothed belt.
In a preferred embodiment of the present invention, the first channeling section further includes a first fixed support, the first fixed support is fixedly provided with a first upper bushing and a first lower bushing, the first upper shaft is capable of circumferentially rotating and axially slidably passing through the first upper bushing, and the first lower shaft is capable of circumferentially rotating and axially slidably passing through the first lower bushing; and a cylinder seat is arranged on the first fixed support, and the roller shifting cylinder is supported and arranged on the cylinder seat.
In a preferred embodiment of the present invention, the second channeling section further includes a second fixed support, a second upper bushing and a second lower bushing are fixedly disposed on the second fixed support, the second upper shaft is capable of rotating circumferentially and axially slidably passing through the second upper bushing, and the second lower shaft is capable of rotating circumferentially and axially slidably passing through the second lower bushing; and a cylinder seat is arranged on the second fixed support, and the roller shifting cylinder is supported on the cylinder seat.
From the above, the roll shifting device of the four-high mill provided by the invention has the following beneficial effects:
in the roll shifting device of the four-roll mill, the first roll shifting part and the second roll shifting part are symmetrically arranged, the first locking driving structure synchronously drives the first upper locking plate and the first lower locking plate, and the second locking driving structure synchronously drives the second upper locking plate and the second lower locking plate, so that the number of parts of the locking structure is reduced, and the working stability is improved; the roller shifting cylinder drives the first upper shaft, the first lower shaft, the second upper shaft and the second lower shaft to move along the axial direction, and a locking plate arranged on the roller shifting cylinder holds the working roller tightly to play a role of roller shifting;
in the roll shifting device of the four-roll mill, the locking telescopic cylinder drives the upper shaft and the lower shaft to rotate simultaneously through the double-sided rack, so that an upper locking plate on the upper shaft and a lower locking plate on the lower shaft synchronously rotate, and the working rolls are synchronously locked or loosened; the one cylinder drives the two shafts, and compared with the prior art, the number of locking cylinders is reduced; the cylinder barrel of the locking telescopic cylinder is fixedly arranged, so that the hose is not required to follow up, and the working stability is improved;
the integral device has a simple structure, adopts parts as few as possible, and is convenient to maintain and replace.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1: is a schematic diagram of the roll shifting device of the four-high rolling mill.
FIG. 2: is an internal schematic view of the first channeling roll portion of the present invention.
FIG. 3: is a schematic view of the second channeling roll portion of the present invention.
FIG. 4: the first locking driving structure is a schematic diagram when the working roller is replaced.
FIG. 5: is a front view of fig. 4.
FIG. 6: is a schematic view of a first upper shaft of the present invention.
FIG. 7: is a schematic view of a first lower shaft of the present invention.
FIG. 8: is a schematic view of a first double-sided rack of the present invention.
In the figure:
100. a roll shifting device of the four-high mill;
1. a first channeling roll part;
11. a first upper shaft; 12. a first lower shaft; 13. a first upper locking plate; 14. a first lower locking plate;
2. a second channeling roll part;
21. a second upper shaft; 22. a second lower shaft; 23. a second upper locking plate; 24. a second lower locking plate;
3. a first lock actuation structure;
31. a first locking telescopic cylinder; 311. a first locking cylinder; 312. a first locking cylinder rod; 32. a first double-sided rack; 33. a first upper gear; 34. a first lower gear;
4. a roll shifting cylinder;
5. a first fixed support;
51. a first upper bushing; 52. a first lower bushing; 53. a cylinder base;
6. a second fixed support;
61. a second upper bushing; 62. a second lower bushing;
7. a work roll.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 8, the present invention provides a roll shifting device 100 of a four-roll mill, which includes a first roll shifting portion 1 and a second roll shifting portion 2 symmetrically disposed at two sides of a working roll 7, wherein the first roll shifting portion 1 includes a first upper shaft 11 and a first lower shaft 12 disposed in parallel at an interval, the first upper shaft 11 is provided with a first upper locking plate 13, the first lower shaft 12 is provided with a first lower locking plate 14, the first upper shaft 11 and the first lower shaft 12 are connected and provided with a first locking driving structure 3, and the first locking driving structure 3 is used for driving the first upper locking plate 13 and the first lower locking plate 14 to synchronously lock or unlock the working roll 7 (prior art); one axial ends of the first upper shaft 11 and the first lower shaft 12 are respectively connected with a roller shifting cylinder 4;
the second channeling roller part 2 comprises a second upper shaft 21 and a second lower shaft 22 which are arranged in parallel at intervals, a second upper locking plate 23 is arranged on the second upper shaft 21, a second lower locking plate 24 is arranged on the second lower shaft 22, a working roller locking space can be formed among the first upper locking plate 13, the first lower locking plate 14, the second upper locking plate 23 and the second lower locking plate 24, a second locking driving structure is connected to the second upper shaft 21 and the second lower shaft 22, and the second locking driving structure is used for driving the second upper locking plate 23 and the second lower locking plate 24 to synchronously lock or unlock the working roller; one axial ends of the second upper shaft 21 and the second lower shaft 22 are respectively connected with a roll shifting cylinder 4.
In the roll shifting device of the four-roll mill, the first roll shifting part and the second roll shifting part are symmetrically arranged, the first locking driving structure synchronously drives the first upper locking plate and the first lower locking plate, and the second locking driving structure synchronously drives the second upper locking plate and the second lower locking plate, so that the number of parts of the locking structure is reduced, and the working stability is improved; the roller shifting cylinder drives the first upper shaft, the first lower shaft, the second upper shaft and the second lower shaft to move along the axial direction, and a locking plate arranged on the roller shifting cylinder holds the working roller tightly to play a role of roller shifting; the integral device has a simple structure, adopts parts as few as possible, and is convenient to maintain and replace.
Further, as shown in fig. 2, 4, 5, 6, 7, and 8, the first locking driving structure 3 includes a first locking telescopic cylinder 31, the first locking telescopic cylinder 31 is connected to a first double-sided rack 32, a first upper gear 33 is disposed on a side wall of the first upper shaft 11, a first lower gear 34 is disposed on a side wall of the first lower shaft 12, both the first upper gear 33 and the first lower gear 34 are engaged with the first double-sided rack 32, and the first locking telescopic cylinder 31 can drive the first double-sided rack 32 to move so as to drive the first upper shaft 11 and the first lower shaft 12 to rotate; the first upper gear 33 and the first lower gear 34 are movable along the first double-sided rack 32.
In the present embodiment, as shown in fig. 2, 4 and 5, the first locking telescopic cylinder 31 includes a first locking cylinder tube 311 fixedly provided, one end of the first locking cylinder tube 311 close to the work roll is sealingly slidably inserted into a first locking cylinder rod 312, and the first double-sided rack 32 is connected to the first locking cylinder rod 312.
The first locking telescopic cylinder 31 drives the first upper shaft 11 and the first lower shaft 12 to rotate simultaneously through the first double-sided rack 32, so that the first upper locking plate 13 on the first upper shaft 11 and the first lower locking plate 14 on the first lower shaft 12 rotate synchronously, and synchronous locking or unlocking of the working rolls is realized; compared with the prior art, the two shafts are driven by one cylinder, and the number of locking cylinders is reduced. The first locking cylinder 311 of the first locking telescopic cylinder 31 is fixedly arranged, so that hose follow-up is not needed, and the working stability is improved.
Further, the first upper gear 33 and the first lower gear 34 are both arranged in an arc shape (incomplete gear), the first upper gear 33 and the first lower gear 34 are kept in a state of being meshed with the first double-sided rack 32, and the circumferential lengths of the first upper gear 33 and the first lower gear 34 are both arranged in a manner of being matched with the length of the first double-sided rack 32.
When the roll is shifted, the first upper locking plate 13 and the first lower locking plate 14 hold the working roll tightly, the first upper gear 33 and the first lower gear 34 can move along the meshed first double-sided rack 32, and the rack length of the first double-sided rack 32 needs to ensure that the gears (the first upper gear 33 and the first lower gear 34) are always meshed with the racks and are not disengaged during the roll shifting stroke.
Furthermore, the second locking driving structure and the first locking driving structure 3 are arranged in the same structure, and the structural form of the whole device is simplified. The second locking driving structure comprises a second locking telescopic cylinder, a second double-sided rack is connected to the second locking telescopic cylinder, a second upper gear is arranged on the side wall of the second upper shaft, a second lower gear is arranged on the side wall of the second lower shaft, the second upper gear and the second lower gear are both meshed with the second double-sided rack, the second locking telescopic cylinder can drive the second double-sided rack to move so as to drive the second upper shaft and the second lower shaft to rotate, and the second upper gear and the second lower gear can move along the second double-sided rack.
Furthermore, the second locking telescopic cylinder comprises a second locking cylinder barrel which is fixedly arranged, one end of the second locking cylinder barrel, which is close to the working roll, is hermetically and slidably arranged on the second locking cylinder barrel to penetrate through a second locking cylinder rod, and the second locking cylinder rod is connected with a second double-sided rack.
Further, the second upper gear and the second lower gear are both arranged in an arc shape, the second upper gear and the second lower gear are kept in a state of being meshed with the second double-sided rack, and the circumferential lengths of the second upper gear and the second lower gear are both matched with the length of the second double-sided rack.
In the embodiment, the first locking telescopic cylinder 31 can drive the first upper shaft 11 and the first lower shaft 12 to rotate 90 ° circumferentially through the first double-sided rack 32, that is, the first upper locking plate 13 and the first lower locking plate 14 can rotate from horizontal holding to vertical loosening of the working roll; the second locking telescopic cylinder can drive the second upper shaft and the second lower shaft to rotate 90 degrees in the circumferential direction through the second double-sided rack, namely the second upper locking plate 23 and the second lower locking plate 24 can be horizontally held tightly to rotate to vertically loosen the working roll.
Further, as shown in fig. 1 and 2, the first channeling roll part 1 further includes a first fixed support 5, a first upper bushing 51 and a first lower bushing 52 are fixedly arranged on the first fixed support 5, the first upper shaft 11 can circumferentially rotate and axially slidably pass through the first upper bushing 51, and the first lower shaft 12 can circumferentially rotate and axially slidably pass through the first lower bushing 52; a cylinder seat 53 is arranged on the first fixed support 5, and a roller-shifting cylinder 4 is supported and arranged on the cylinder seat 53. The first locking cylinder 311 is fixedly connected to the first fixed bearing 5.
The first upper shaft 11 and the first lower shaft 12 can move in the first upper bushing 51 and the first lower bushing 52 to function as a roll shifting function by being driven by the roll shifting cylinder 4.
Further, as shown in fig. 1 and 3, the second channeling roll part 2 further includes a second fixed support 6, a second upper bushing 61 and a second lower bushing 62 are fixedly arranged on the second fixed support 6, the second upper shaft 21 can circumferentially rotate and axially slidably pass through the second upper bushing 61, and the second lower shaft 22 can circumferentially rotate and axially slidably pass through the second lower bushing 62; the second fixed support 6 is provided with a cylinder seat 53, and the cylinder seat 53 is supported and provided with a roller shifting cylinder 4. The second locking cylinder is fixedly connected to the second fixing support 6.
The working process of the roll shifting device 100 of the four-high rolling mill of the invention is as follows:
when the working roll needs to be replaced, the first locking cylinder rod 312 and the second locking cylinder rod synchronously extend out to respectively drive the first double-sided rack 32 and the second double-sided rack to move, the first double-sided rack 32 drives the first upper shaft 11 and the first lower shaft 12 to simultaneously rotate through the meshed first upper gear 33 and the first lower gear 34, the first upper shaft 11 drives the first upper locking plate 13 to rotate anticlockwise (or rotate clockwise), and the first lower shaft 12 drives the first lower locking plate 14 to rotate clockwise (or rotate anticlockwise, and the rotation direction is opposite to that of the first upper shaft); the second upper shaft 21 drives the second upper locking plate to rotate clockwise (or anticlockwise), and the second lower shaft 22 drives the second lower locking plate to rotate anticlockwise (or clockwise, and the rotation direction is opposite to that of the second upper shaft); after the working rolls rotate by 90 degrees, the working rolls are axially locked and unlocked, and the old working rolls can be pulled out;
a new working roll is pushed into the rolling mill, after the new working roll is reset, the first locking cylinder rod 312 and the second locking cylinder rod synchronously retract to respectively drive the first double-sided rack 32 and the second double-sided rack to move, the first double-sided rack 32 drives the first upper shaft 11 and the first lower shaft 12 to simultaneously rotate through the meshed first upper gear 33 and the first lower gear 34, the first upper shaft 11 drives the first upper locking plate 13 to clockwise rotate (or anticlockwise rotate), the first lower shaft 12 drives the first lower locking plate 14 to anticlockwise rotate (or clockwise rotate, and the steering direction is opposite to that of the first upper shaft); the second upper shaft 21 drives the second upper locking plate to rotate anticlockwise (or clockwise), and the second lower shaft 22 drives the second lower locking plate to rotate clockwise (or anticlockwise, and the rotation direction is opposite to that of the second upper shaft); after the steel rolls rotate by 90 degrees, the working rolls are axially locked, and steel rolling can be started.
From the above, the roll shifting device of the four-high mill provided by the invention has the following beneficial effects:
in the roll shifting device of the four-roll mill, the first roll shifting part and the second roll shifting part are symmetrically arranged, the first locking driving structure synchronously drives the first upper locking plate and the first lower locking plate, and the second locking driving structure synchronously drives the second upper locking plate and the second lower locking plate, so that the number of parts of the locking structure is reduced, and the working stability is improved; the roller shifting cylinder drives the first upper shaft, the first lower shaft, the second upper shaft and the second lower shaft to move along the axial direction, and a locking plate arranged on the roller shifting cylinder holds the working roller tightly to play a role of roller shifting;
in the roll shifting device of the four-roll mill, the locking telescopic cylinder drives the upper shaft and the lower shaft to rotate simultaneously through the double-sided rack, so that an upper locking plate on the upper shaft and a lower locking plate on the lower shaft synchronously rotate, and the working rolls are synchronously locked or loosened; the one cylinder drives the two shafts, and compared with the prior art, the number of locking cylinders is reduced; the cylinder barrel of the locking telescopic cylinder is fixedly arranged, so that the hose is not required to follow up, and the working stability is improved;
the integral device has a simple structure, adopts parts as few as possible, and is convenient to maintain and replace.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. The roll shifting device of the four-roll mill is characterized by comprising a first roll shifting part and a second roll shifting part which are symmetrically arranged at two sides of a working roll, wherein the first roll shifting part comprises a first upper shaft and a first lower shaft which are arranged in parallel at intervals, a first upper locking plate is arranged on the first upper shaft, a first lower locking plate is arranged on the first lower shaft, a first locking driving structure is connected and arranged on the first upper shaft and the first lower shaft, and the first locking driving structure is used for synchronously driving the first upper locking plate and the first lower locking plate to lock or unlock the working roll; one axial ends of the first upper shaft and the first lower shaft are respectively connected with a roller shifting cylinder; the second roll shifting part comprises a second upper shaft and a second lower shaft which are arranged in parallel at intervals, a second upper locking plate is arranged on the second upper shaft, a second lower locking plate is arranged on the second lower shaft, a working roll locking space can be formed among the first upper locking plate, the first lower locking plate, the second upper locking plate and the first lower locking plate, a second locking driving structure is connected to the second upper shaft and the second lower shaft, and the second locking driving structure is used for synchronously driving the second upper locking plate and the second lower locking plate to lock or unlock the working roll; and one axial ends of the second upper shaft and the second lower shaft are respectively connected with a roller shifting cylinder.
2. The roll shifting device of a four-high rolling mill according to claim 1, wherein the first locking driving structure comprises a first locking telescopic cylinder, a first double-sided rack is connected to the first locking telescopic cylinder, a first upper gear is arranged on a side wall of the first upper shaft, a first lower gear is arranged on a side wall of the first lower shaft, the first upper gear and the first lower gear are both meshed with the first double-sided rack, and the first locking telescopic cylinder can drive the first double-sided rack to move so as to drive the first upper shaft and the first lower shaft to rotate.
3. The roll shifting device of the four-high rolling mill according to claim 2, wherein the first locking telescopic cylinder comprises a first locking cylinder barrel which is fixedly arranged, one end of the first locking cylinder barrel, which is close to the working roll, is hermetically and slidably arranged to penetrate through a first locking cylinder rod, and the first locking cylinder rod is connected with the first double-sided rack.
4. The roll shifting apparatus of a four high rolling mill according to claim 2, wherein the first upper gear and the first lower gear are disposed in an arc, the first upper gear and the first lower gear are maintained in a state of being engaged with the first double rack, and circumferential lengths of the first upper gear and the first lower gear are disposed to match a length of the first double rack.
5. The roll shifting device of a four-high rolling mill according to claim 2, wherein the second locking driving structure comprises a second locking telescopic cylinder, a second double-sided rack is connected to the second locking telescopic cylinder, a second upper gear is arranged on the side wall of the second upper shaft, a second lower gear is arranged on the side wall of the second lower shaft, the second upper gear and the second lower gear are both meshed with the second double-sided rack, and the second locking telescopic cylinder can drive the second double-sided rack to move so as to drive the second upper shaft and the second lower shaft to rotate.
6. The roll shifting device of the four-high rolling mill according to claim 5, wherein the second locking telescopic cylinder comprises a second locking cylinder barrel which is fixedly arranged, one end of the second locking cylinder barrel, which is close to the working roll, is hermetically and slidably arranged to penetrate through a second locking cylinder rod, and the second locking cylinder rod is connected with the second double-sided rack.
7. The roll shifting apparatus of a four high rolling mill according to claim 5, wherein the second upper gear and the second lower gear are arranged in an arc, the second upper gear and the second lower gear are maintained in a state of being engaged with the second double rack, and circumferential lengths of the second upper gear and the second lower gear are arranged to match a length of the second double rack.
8. The four high mill roll shifting apparatus of claim 5, wherein said first locking telescoping cylinder is capable of rotating said first upper shaft and said first lower shaft circumferentially 90 ° by said first double sided rack; the second locking telescopic cylinder can drive the second upper shaft and the second lower shaft to rotate 90 degrees in the circumferential direction through the second double-sided toothed belt.
9. The four high mill roll shifting device of claim 2, wherein the first shifting section further comprises a first fixed support on which a first upper bushing and a first lower bushing are fixedly disposed, the first upper shaft being circumferentially rotatable and axially slidable through the first upper bushing, the first lower shaft being circumferentially rotatable and axially slidable through the first lower bushing; and a cylinder seat is arranged on the first fixed support, and the roller shifting cylinder is supported and arranged on the cylinder seat.
10. The four high rolling mill roll shifting device of claim 5, wherein the second roll shifting portion further comprises a second fixed support on which a second upper bushing and a second lower bushing are fixedly disposed, the second upper shaft being circumferentially rotatable and axially slidable through the second upper bushing, the second lower shaft being circumferentially rotatable and axially slidable through the second lower bushing; and a cylinder seat is arranged on the second fixed support, and the roller shifting cylinder is supported on the cylinder seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110796913.9A CN113426837A (en) | 2021-07-14 | 2021-07-14 | Roll shifting device of four-high mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110796913.9A CN113426837A (en) | 2021-07-14 | 2021-07-14 | Roll shifting device of four-high mill |
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| Publication Number | Publication Date |
|---|---|
| CN113426837A true CN113426837A (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110796913.9A Pending CN113426837A (en) | 2021-07-14 | 2021-07-14 | Roll shifting device of four-high mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147070A (en) * | 2021-11-24 | 2022-03-08 | 北京京诚之星科技开发有限公司 | Roll shifting device of rolling mill |
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2021
- 2021-07-14 CN CN202110796913.9A patent/CN113426837A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147070A (en) * | 2021-11-24 | 2022-03-08 | 北京京诚之星科技开发有限公司 | Roll shifting device of rolling mill |
| CN114147070B (en) * | 2021-11-24 | 2023-10-24 | 北京京诚之星科技开发有限公司 | Rolling mill roll shifting device |
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