CN114147071A - Roll shifting device of rolling mill - Google Patents
Roll shifting device of rolling mill Download PDFInfo
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- CN114147071A CN114147071A CN202111403032.2A CN202111403032A CN114147071A CN 114147071 A CN114147071 A CN 114147071A CN 202111403032 A CN202111403032 A CN 202111403032A CN 114147071 A CN114147071 A CN 114147071A
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- rolling mill
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- 238000005096 rolling process Methods 0.000 title claims abstract description 62
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 8
- 210000000080 chela (arthropods) Anatomy 0.000 description 8
- 230000005465 channeling Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
- B21B31/18—Adjusting or positioning rolls by moving rolls axially
Abstract
The invention relates to a roll shifting device of a rolling mill, which comprises at least one swinging clamp structure, wherein the swinging clamp structure comprises a first swinging clamp and a second swinging clamp which are arranged at an interval from top to bottom, the first swinging clamp can swing and be clamped on one side of an upper working roll or swing and be separated from the upper working roll, and the second swinging clamp can swing and be clamped on one side of a lower working roll or swing and be separated from the lower working roll; the swing clamp structure can be rotatably connected to a horizontally arranged driving structure, and the first swing clamp and the second swing clamp are symmetrically arranged around the central shaft of the driving structure; the driving structure stretches and retracts to drive the first swing clamp and the second swing clamp to rotate simultaneously, and the rotating directions of the first swing clamp and the second swing clamp are opposite. The swing clamp structure is driven to rotate by the roll shifting hydraulic cylinder so as to drive the working roll to move, so that the roll shifting effect is achieved; the locking hydraulic cylinder is not needed, the structure is simple, the number of parts is reduced as much as possible, and the maintenance and the replacement are convenient.
Description
Technical Field
The invention relates to the technical field of rolling mills, in particular to a roll shifting device of a rolling mill.
Background
When the rolling mill rolls the plate strip, the working roll is bent due to the rolling force, so that the rolled plate strip has thickness deviation along the width direction. In order to eliminate bending deformation of the working rolls under the action of rolling force and reduce the transverse thickness deviation of the strip, the working roll shifting technology is mostly adopted in the strip rolling mill in recent years.
The prior art is a roll shifting device consisting 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. In the device, the channeling body moves in the square frame, and lining plates in the horizontal and vertical directions are needed, so that parts are complicated; each unit is provided with a locking cylinder; the locking cylinder needs to move along with the shifting roller body and needs to be provided with a hose to follow up; the dimension in the axial direction of the roll is large.
There is also known in the art a roll shifting device which 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 cylinder body of scurrying the roller jar becomes an organic whole with the fixing base, scurrs 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. In the device, the size of the axial direction of the roller is small, but the structure is complex, the maintenance and the replacement of a hydraulic cylinder sealing element and the like are very difficult, and the device is basically disassembled completely; each unit is provided with a locking cylinder; the locking cylinder needs to move along with the roller shifting body and needs to be provided with a hose to follow.
Therefore, the inventor provides a roll shifting device of a rolling 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 rolling mill, which overcomes the problems in the prior art, and the roll shifting device drives a swing clamp structure to rotate through a roll shifting hydraulic cylinder so as to drive a working roll to move, thereby playing a roll shifting role; a hydraulic cylinder does not need to be locked, the structure is simple, parts are reduced as much as possible, and the maintenance and the replacement are convenient; the roll shifting hydraulic cylinder is arranged perpendicular to the axial direction of the roller, so that the size of the roller in the axial direction is reduced, and the stroke required by roller change is reduced.
The invention aims to realize that the roll shifting device of the rolling mill is arranged on a rolling mill housing and comprises at least one swinging clamp structure, wherein the swinging clamp structure is arranged on one side of an operation side, the swinging clamp structure comprises a first swinging clamp and a second swinging clamp which are arranged at an interval from top to bottom, the first swinging clamp can be in swinging clamping on one side of an upper working roll or can be in swinging separation from the upper working roll, and the second swinging clamp can be in swinging clamping on one side of a lower working roll or can be in swinging separation from the lower working roll; the swing clamp structure can be rotatably connected to a horizontally arranged driving structure, and the first swing clamp and the second swing clamp are symmetrically arranged around the central shaft of the driving structure; the driving structure stretches and retracts to drive the first swing clamp and the second swing clamp to rotate simultaneously, the rotating directions of the first swing clamp and the second swing clamp are opposite, and the first swing clamp and the second swing clamp rotate simultaneously to drive the upper working roll and the lower working roll to move in opposite directions along the axial direction; the roll shifting device of the rolling mill further comprises a control part, and the control part can control the driving structure to stretch and retract.
In a preferred embodiment of the present invention, the number of the swing clamp structures is two, and the two swing clamp structures are symmetrically disposed on two sides of the operation side; the driving structure connected with each swinging clamp structure is a roller shifting hydraulic cylinder, a central shaft of the roller shifting hydraulic cylinder is perpendicular to a central shaft of the upper working roll, the control part can control the roller shifting hydraulic cylinder to stretch, and the first swinging clamp and the second swinging clamp are driven by the stretching of the roller shifting hydraulic cylinder to rotate simultaneously and rotate in opposite directions.
In a preferred embodiment of the present invention, the rolling mill further comprises a fixed support arranged on the mill housing, and the first swinging clamp is hinged to the top end of the fixed support through a first hinge shaft; the second swinging clamp is hinged to the bottom end of the fixed support through a second hinge shaft;
the first swing clamp is provided with a first jaw and a first connecting groove, the roller shifting hydraulic cylinder is rotatably connected with a first sliding sleeve, the cross sections of the first sliding sleeve and the first connecting groove are arranged in a rectangular shape, the length direction of the first connecting groove is perpendicular to the axial direction of the roller shifting hydraulic cylinder, the first sliding sleeve can be slidably arranged in the first connecting groove in a penetrating manner, and the roller shifting hydraulic cylinder drives the first swing clamp to rotate around the first hinge shaft through the first sliding sleeve and the first connecting groove;
the second swing clamp is provided with a second jaw and a second connecting groove, the roll shifting hydraulic cylinder is rotatably connected with a second sliding sleeve, the second sliding sleeve and the first sliding sleeve are coaxially arranged, the cross sections of the second sliding sleeve and the second connecting groove are arranged in a rectangular shape, the length direction of the second connecting groove is perpendicular to the axial direction of the roll shifting hydraulic cylinder, the second sliding sleeve can be slidably arranged in the second connecting groove in a penetrating manner, and the roll shifting hydraulic cylinder drives the second swing clamp to rotate around the second hinge shaft through the second sliding sleeve and the second connecting groove;
the first hinge shaft and the second hinge shaft are respectively positioned at two sides of the first sliding sleeve and the second sliding sleeve.
In a preferred embodiment of the present invention, a first support hinge hole is disposed at a top end of the fixed support, and a second support hinge hole is disposed at a bottom end of the fixed support; a first clamp body hinge hole is formed in the first swinging clamp, and a second clamp body hinge hole is formed in the second swinging clamp; the first hinge shaft is rotatably arranged in the first support hinge hole and the first clamp body hinge hole in a penetrating mode, and the second hinge shaft is rotatably arranged in the second support hinge hole and the second clamp body hinge hole in a penetrating mode.
In a preferred embodiment of the invention, the roll shifting hydraulic cylinder comprises a roll shifting cylinder barrel and a roll shifting cylinder rod, and the roll shifting cylinder rod is hermetically and slidably arranged in the roll shifting cylinder barrel; the roller shifting cylinder barrel is fixedly connected to the fixed support, a driving rod which is vertically arranged is connected to a rod of the roller shifting cylinder barrel, and the driving rod is rotatably connected with the first sliding sleeve and the second sliding sleeve.
In a preferred embodiment of the present invention, a piston rod head is disposed at one end of the roller-shifting cylinder rod away from the roller-shifting cylinder barrel, the cross section of the piston rod head is rectangular, a through-going through groove is disposed on the fixed support, and the piston rod head can slide along the through-groove.
In a preferred embodiment of the present invention, the fixed support is further provided with an oil cylinder connecting seat, and the roller shifting cylinder is connected to the oil cylinder connecting seat through a buckling plate structure.
In a preferred embodiment of the present invention, two connection columns are disposed on the side wall of the roller shifting cylinder, a connection seat arc groove structure is disposed on the oil cylinder connection seat, a pressing plate arc groove structure is disposed on the pressing plate structure, and the pressing plate arc groove structure can be correspondingly buckled with the connection seat arc groove structure to block the connection columns.
In a preferred embodiment of the present invention, the connecting seat arc groove structure includes a first arc groove and a second arc groove, the buckling and pressing plate structure includes a curved plate, a first buckling and pressing plate, and a second buckling and pressing plate, the curved plate is buckled on the sidewall of the roller shifting cylinder, the pressing plate arc groove structure includes a third arc groove on the first buckling and pressing plate and a fourth arc groove on the second buckling and pressing plate, the third arc groove can be buckled with the first arc groove to fix an upward connecting column on the roller shifting hydraulic cylinder, and the fourth arc groove can be buckled with the second arc groove to fix a downward connecting column on the roller shifting hydraulic cylinder.
In a preferred embodiment of the present invention, the first pressing plate and the second pressing plate are fixed to the cylinder connecting seat by screws.
From the above, the roll shifting device of the rolling mill provided by the invention has the following beneficial effects:
the invention provides a roll shifting device of a rolling mill, wherein a roll shifting hydraulic cylinder drives a swing clamp structure to rotate, and a first swing clamp and a second swing clamp of the swing clamp structure swing at the same time and in opposite directions, so that an upper working roll and a lower working roll are driven to move in opposite directions along the axial direction, the moving directions of the upper working roll and the lower working roll are conformed to when the rolling mill shifts, and the roll shifting effect is realized; in the device, a hydraulic cylinder is not required to be locked, the structure is simple, parts are used as few as possible, and the maintenance and the replacement are convenient; the roll shifting hydraulic cylinder is arranged perpendicular to the axial direction of the roller, so that the size of the roller in the axial direction is reduced, and the stroke required by roller change is reduced.
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: the invention discloses a three-dimensional structure drawing of a fixed support at one side of a roll shifting device of a rolling mill.
FIG. 2: the rolling mill roll shifting device of the invention omits a front view of a fixed support at one side.
FIG. 3: the roll shifting device of the rolling mill of the invention omits a top view of a fixed support at one side.
FIG. 4: the invention is a schematic assembly diagram of the swing clamp structure and the roll shifting hydraulic cylinder.
FIG. 5: is a schematic view of the fixing support of the present invention.
FIG. 6: is a schematic diagram of the roll shifting device of the rolling mill in the position without roll shifting.
FIG. 7: the schematic diagram of the roll shifting device of the rolling mill is shown when the upper working roll shifts to the maximum position of the transmission side.
FIG. 8: the schematic view of the roll shifting device of the rolling mill is shown when the upper working roll shifts to the maximum position of the operating side.
FIG. 9: is a schematic diagram of the roll shifting device of the rolling mill when the second swinging clamp is separated from the lower working roll.
FIG. 10: is a schematic diagram of the roll shifting device of the rolling mill of the invention when the first swinging clamp is separated from the upper working roll.
FIG. 11: the schematic diagram of the roll shifting device of the rolling mill is shown when the upper working roll and the lower working roll are completely pulled out.
In the figure:
100. a roll shifting device of the rolling mill;
1. a swing clamp structure;
11. a first swing clamp; 111. a first jaw; 112. a first connecting groove;
12. a second swing clamp; 121. a second jaw; 122. a second connecting groove;
2. a roll shifting hydraulic cylinder;
21. a roll shifting cylinder barrel; 22. a roll-shifting cylinder rod; 23. a drive rod; 24. a piston rod head; 25. connecting columns; 26. a buckling plate structure; 261. a first buckling plate; 262. a second buckling and pressing plate; 263. bending a plate;
3. a fixed support;
31. the first support is hinged with the hole; 32. a second support hinge hole; 33. a first connection hole; 34. a second connection hole; 35. passing through a groove; 36. an oil cylinder connecting seat;
41. a first hinge shaft; 42. a second hinge shaft;
51. a first sliding sleeve; 52. a second sliding sleeve;
91. an upper work roll; 92. a lower working roll; 93. a rolling mill housing; 901. an operating side; 902. and a transmission side.
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 11, the present invention provides a roll shifting device 100 for a rolling mill, which is installed on a mill housing 93, wherein the rolling mill working rolls include an upper working roll 91 and a lower working roll 92 which are horizontally and vertically spaced, and the upper working roll 91 and the lower working roll 92 are respectively provided with a protruding structure for conveniently stopping the roll shifting device 100; the two ends of the upper working roll and the lower working roll are respectively an operating side 901 and a transmission side 902, the two radial sides of the operating side 901 are respectively an inlet side and an outlet side, and when the rolling mill rolls, the upper working roll 91 and the lower working roll 92 basically move symmetrically and reversely along the axial direction; the structure is the prior art;
the roll shifting device 100 of the rolling mill comprises at least one swinging clamp structure 1, wherein the swinging clamp structure 1 is arranged on one side of an operation side 901 (the radial side of a working roll of the rolling mill), the swinging clamp structure 1 comprises a first swinging clamp 11 and a second swinging clamp 12 which are arranged at an interval from top to bottom, the first swinging clamp 11 can be clamped on one side of the upper working roll 91 in a swinging mode (during working) or can be separated from the upper working roll 91 in a swinging mode (during roll changing), and the second swinging clamp 12 can be clamped on one side of the lower working roll 92 in a swinging mode (during working) or can be separated from the lower working roll 92 in a swinging mode (during roll changing);
the swing clamp structure 1 is rotatably connected to a horizontally arranged driving structure (in this embodiment, the driving structure is a roller shifting hydraulic cylinder 2), a central axis of the roller shifting hydraulic cylinder 2 is vertically arranged with a central axis of an upper work roll (in the prior art, the upper work roll and a lower work roll are arranged in parallel, the central axis of the roller shifting hydraulic cylinder 2 is vertically arranged with the central axes of the upper work roll and the lower work roll), and the first swing clamp 11 and the second swing clamp 12 are symmetrically arranged with respect to the central axis of the driving structure (in this embodiment, the driving structure is the roller shifting hydraulic cylinder 2); a driving structure (in this embodiment, the driving structure is the roller-shifting hydraulic cylinder 2) stretches and retracts to drive the first swing clamp 11 and the second swing clamp 12 to rotate simultaneously, and the rotating directions of the first swing clamp 11 and the second swing clamp 12 are opposite (opposite to the central axis of the driving structure), for example, when the first swing clamp 11 swings clockwise, the second swing clamp 12 swings counterclockwise), the first swing clamp 11 rotates to drive the upper working roller 91 to move towards the transmission side or the operating side, and simultaneously the second swing clamp 12 rotates to drive the lower working roller 92 to move towards the operating side or the transmission side, that is, the first swing clamp 11 and the second swing clamp 12 rotate simultaneously to drive the upper working roller 91 and the lower working roller 92 to move towards opposite directions along the axial direction; the rolling mill roll shifting device 100 further includes a control section capable of controlling the extension and contraction of the driving mechanism (in the present embodiment, the driving mechanism is the roll shifting hydraulic cylinder 2).
The invention provides a roll shifting device of a rolling mill, wherein a roll shifting hydraulic cylinder drives a swing clamp structure to rotate, and a first swing clamp and a second swing clamp of the swing clamp structure swing at the same time and in opposite directions, so that an upper working roll and a lower working roll are driven to move in opposite directions along the axial direction, the moving directions of the upper working roll and the lower working roll are conformed to when the rolling mill shifts, and the roll shifting effect is realized; in the device, a hydraulic cylinder is not required to be locked, the structure is simple, parts are used as few as possible, and the maintenance and the replacement are convenient; the roll shifting hydraulic cylinder is arranged perpendicular to the axial direction of the roller, so that the size of the roller in the axial direction is reduced, and the stroke required by roller change is reduced.
Further, as shown in fig. 1, 2, and 3, in order to ensure the stability of the roll movement, the roll shifting device 100 of the rolling mill includes two swing clamp structures 1, and the two swing clamp structures 1 are symmetrically disposed on both sides of the operation side. The control section controls the roll shifting hydraulic cylinders 2 on both sides of the operation side 901 to operate synchronously to operate the two swing tong structures 1 synchronously. The driving structure that each swing pincers structural connection is scurrying the roller pneumatic cylinder 2, and the center pin of scurrying the roller pneumatic cylinder 2 is perpendicular setting with the center pin of last work roll, and control portion can control scurrying the roller pneumatic cylinder and stretch out and draw back, and the flexible first swing pincers of drive of scurrying the roller pneumatic cylinder and second swing pincers rotate simultaneously and rotation opposite direction.
Further, as shown in fig. 1, 2, 3 and 5, the rolling mill roll shifting device 100 further includes a fixed support 3, and the fixed support 3 is fixed on a side wall of the rolling mill housing 93 (prior art); the fixed support 3 is arranged in a box structure, and the first swinging clamp 11 is hinged to the top end of the fixed support 3 through a first hinge shaft 41; the second swinging clamp 12 is hinged to the bottom end of the fixed support 3 through a second hinge shaft 42; the first articulated shaft 41 and the second articulated shaft 42 are symmetrically arranged about the central axis of the roll shifting hydraulic cylinder;
as shown in fig. 4, the first swing clamp 11 is provided with a first jaw 111 and a first connecting groove 112, the roller-shifting hydraulic cylinder 2 is rotatably connected with a first sliding sleeve 51, the cross sections of the first sliding sleeve 51 and the first connecting groove 112 are arranged in a rectangular shape, the length direction of the first connecting groove 112 is perpendicular to the axial direction of the roller-shifting hydraulic cylinder 2, the first sliding sleeve 51 can be slidably inserted into the first connecting groove 112, and the roller-shifting hydraulic cylinder 2 drives the first swing clamp 11 to rotate around a first hinge shaft through the first sliding sleeve 51 and the first connecting groove 112;
set up the second on the second swing pincers 12 and keep silent 121 and second connecting groove 122, the last rotation of drunkenness hydraulic cylinder 2 is connected second sliding sleeve 52, second sliding sleeve 52 and the coaxial setting of first sliding sleeve 51, the rectangle setting is personally submitted in the transversal of second sliding sleeve 52 and second connecting groove 122, the length direction of second connecting groove 122 is perpendicular setting with the axial of drunkenness hydraulic cylinder 2, second sliding sleeve 52 can wear to locate in second connecting groove 122 slidably, drunkenness hydraulic cylinder 2 drives second swing pincers 12 through second sliding sleeve 52 and second connecting groove 122 and rotates around second articulated shaft 42.
Further, as shown in fig. 5, a first support hinge hole 31 is formed at the top end of the fixed support 3, and a second support hinge hole 32 is formed at the bottom end of the fixed support 3; a first clamp body hinge hole is formed in the first swing clamp 11, and a second clamp body hinge hole is formed in the second swing clamp 12; the first hinge shaft 41 is rotatably inserted into the first support hinge hole and the first clamp hinge hole, and the second hinge shaft 42 is rotatably inserted into the second support hinge hole and the second clamp hinge hole.
In order to ensure the stability of the first hinge shaft 41 and the second hinge shaft 42, a first connection hole 33 corresponding to the first support hinge hole 31 and a second connection hole 34 corresponding to the second support hinge hole 32 are provided in the fixing support, both ends of the first hinge shaft 41 are hinged in the first support hinge hole 31 and the first connection hole 33, and both ends of the second hinge shaft 42 are hinged in the second support hinge hole 32 and the second connection hole 34.
Further, as shown in fig. 4, the roll shifting hydraulic cylinder 2 comprises a roll shifting cylinder 21 and a roll shifting cylinder rod 22, and the roll shifting cylinder rod 22 is hermetically and slidably arranged in the roll shifting cylinder 21; the roller shifting cylinder 21 is fixedly connected to the fixed support 3, the roller shifting cylinder rod 22 is connected to a driving rod 23 which is vertically arranged, and the driving rod 23 is rotatably connected to the first sliding sleeve 51 and the second sliding sleeve 52. The first swing jaw 11 and the second swing jaw 12 rotate in opposite directions with respect to the central axis of the drive lever 23.
Further, as shown in fig. 4 and 5, a piston rod head 24 is arranged at one end of the roller-shifting cylinder rod 22 far away from the roller-shifting cylinder 21, the cross section of the piston rod head 24 is rectangular, a through groove 35 is arranged on the fixed support 3, and the piston rod head 24 can slide along the through groove 35.
Further, as shown in fig. 5, a cylinder connecting seat 36 is further provided on the fixed support 3, and the roll shifting cylinder 21 is connected to the cylinder connecting seat 36 through a buckling plate structure 26.
Further, as shown in fig. 4, two connecting posts 25 are arranged on the side wall of the roller shifting cylinder 21, a connecting seat arc groove structure is arranged on the oil cylinder connecting seat 36, a pressing plate arc groove structure is arranged on the pressing plate structure, and the pressing plate arc groove structure can be correspondingly buckled with the connecting seat arc groove structure to clamp the connecting posts 25.
Further, as shown in fig. 4, the connecting seat circular arc groove structure includes first circular arc groove and second circular arc groove, it includes bent plate 263 to detain clamp plate structure 26, clamp plate 262 is detained to first knot clamp plate 261 and second, bent plate 263 lock is on the lateral wall of scurrying roller cylinder 21, clamp plate circular arc groove structure includes third circular arc groove on the first knot clamp plate 261 and the fourth circular arc groove on the second knot clamp plate 262, upward spliced pole 25 on the fixed roller hydraulic cylinder of scurrying of third circular arc groove ability and first circular arc groove lock, fourth circular arc groove can with the fixed downward spliced pole 25 on the roller hydraulic cylinder of scurrying of second circular arc groove lock.
Further, the first buckling plate 261 and the second buckling plate 262 are both fixed to the cylinder connecting seat 36 by screws.
The working principle of the rolling mill roll shifting device 100 of the present invention is as follows:
during operation, the first swing clamp 11 is clamped on one side of the upper working roll 91, and the second swing clamp 12 is clamped on one side of the lower working roll 92; the roll shifting cylinder rod 22 of the roll shifting hydraulic cylinder 2 telescopically drives the first swinging clamp 11 and the second swinging clamp 12 to reversely and symmetrically rotate, namely: first swing pincers 11 rotate clockwise (or anticlockwise) around first articulated shaft 41, and second swing pincers 12 rotate anticlockwise (or clockwise) around second articulated shaft 42 simultaneously, swing pincers structure 1 drives work roll 91 and lower work roll 92 along the reverse symmetry removal simultaneously of axial, promptly: the first swing clamp 11 drives the upper working roll 91 to move in the direction of the transmission side 902 (or to the operation side 901) along the axial direction, and the second swing clamp 12 drives the lower working roll 92 to move in the direction of the transmission side 902 (or to the transmission side 902) of the operation side 901 along the axial direction, thereby playing a roll shifting role. FIG. 6 is a schematic view of the roll shifting device 100 of the rolling mill when there is no roll shifting, FIG. 7 is a schematic view of the roll shifting device 100 of the rolling mill when the upper work roll 91 shifts to the maximum position on the drive side, and FIG. 8 is a schematic view of the roll shifting device 100 of the rolling mill when the upper work roll 91 shifts to the maximum position on the operating side;
when the roll is changed, the upper working roll 91 and the lower working roll 92 are at the height of the roll changing dislocation position, the roll shifting cylinder rod 22 is completely extended out, the second swing clamp 12 is separated from the lower working roll 92, and the roll changing power (the prior art) pulls the lower working roll 92 to move and separate from the jaw; the roll-shifting cylinder rod 22 is completely retracted, the first swinging clamp 11 is separated from the upper working roll 91, the upper working roll 91 is descended onto the lower working roll 92, and the roll-changing power (the prior art) pulls the lower working roll 92 again to bring the upper working roll 91 to move together and separate from the jaw until the roll-shifting cylinder rod is completely pulled out. Fig. 9 is a schematic view showing the second swing jaw 12 being disengaged from the lower work roll 92 at the time of roll change, fig. 10 is a schematic view showing the first swing jaw 11 being disengaged from the upper work roll 91 at the time of roll change, and fig. 11 is a schematic view showing the upper work roll 91 and the lower work roll 92 being completely pulled out.
When a new roller is pushed in, the new roller gradually moves reversely, and then enters the rolling mill to reach a working position to start steel rolling.
From the above, the roll shifting device of the rolling mill provided by the invention has the following beneficial effects:
the invention provides a roll shifting device of a rolling mill, wherein a roll shifting hydraulic cylinder drives a swing clamp structure to rotate, and a first swing clamp and a second swing clamp of the swing clamp structure swing at the same time and in opposite directions, so that an upper working roll and a lower working roll are driven to move in opposite directions along the axial direction, the moving directions of the upper working roll and the lower working roll are conformed to when the rolling mill shifts, and the roll shifting effect is realized; in the device, a hydraulic cylinder is not required to be locked, the structure is simple, parts are used as few as possible, and the maintenance and the replacement are convenient; the roll shifting hydraulic cylinder is arranged perpendicular to the axial direction of the roller, so that the size of the roller in the axial direction is reduced, and the stroke required by roller change is reduced.
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. A roll shifting device of a rolling mill is arranged on a rolling mill housing and is characterized by comprising at least one swinging clamp structure, wherein the swinging clamp structure is arranged on one side of an operation side and comprises a first swinging clamp and a second swinging clamp which are arranged at an interval from top to bottom; the swing clamp structure can be rotatably connected to a horizontally arranged driving structure, and the first swing clamp and the second swing clamp are symmetrically arranged around the central shaft of the driving structure; the driving structure stretches and retracts to drive the first swing clamp and the second swing clamp to rotate simultaneously, the rotating directions of the first swing clamp and the second swing clamp are opposite, and the first swing clamp and the second swing clamp rotate simultaneously to drive the upper working roll and the lower working roll to move in opposite directions along the axial direction; the roll shifting device of the rolling mill further comprises a control part, and the control part can control the driving structure to stretch and retract.
2. The rolling mill roll shifting device according to claim 1, wherein the number of the swing clamp structures is two, and the two swing clamp structures are symmetrically arranged on two sides of the operation side; the driving structure connected with each swinging clamp structure is a roller shifting hydraulic cylinder, a central shaft of the roller shifting hydraulic cylinder is perpendicular to a central shaft of the upper working roll, the control part can control the roller shifting hydraulic cylinder to stretch, and the first swinging clamp and the second swinging clamp are driven by the stretching of the roller shifting hydraulic cylinder to rotate simultaneously and rotate in opposite directions.
3. The roll shifting device of a rolling mill as claimed in claim 2, further comprising a fixed support arranged on a housing of the rolling mill, wherein the first swinging clamp is hinged to the top end of the fixed support through a first hinge shaft; the second swinging clamp is hinged to the bottom end of the fixed support through a second hinge shaft;
the first swing clamp is provided with a first jaw and a first connecting groove, the roller shifting hydraulic cylinder is rotatably connected with a first sliding sleeve, the cross sections of the first sliding sleeve and the first connecting groove are arranged in a rectangular shape, the length direction of the first connecting groove is perpendicular to the axial direction of the roller shifting hydraulic cylinder, the first sliding sleeve can be slidably arranged in the first connecting groove in a penetrating manner, and the roller shifting hydraulic cylinder drives the first swing clamp to rotate around the first hinge shaft through the first sliding sleeve and the first connecting groove;
the second swing clamp is provided with a second jaw and a second connecting groove, the roll shifting hydraulic cylinder is rotatably connected with a second sliding sleeve, the second sliding sleeve and the first sliding sleeve are coaxially arranged, the cross sections of the second sliding sleeve and the second connecting groove are arranged in a rectangular shape, the length direction of the second connecting groove is perpendicular to the axial direction of the roll shifting hydraulic cylinder, the second sliding sleeve can be slidably arranged in the second connecting groove in a penetrating manner, and the roll shifting hydraulic cylinder drives the second swing clamp to rotate around the second hinge shaft through the second sliding sleeve and the second connecting groove;
the first hinge shaft and the second hinge shaft are respectively positioned at two sides of the first sliding sleeve and the second sliding sleeve.
4. The rolling mill roll shifting device according to claim 3, wherein a first support hinge hole is formed at the top end of the fixed support, and a second support hinge hole is formed at the bottom end of the fixed support; a first clamp body hinge hole is formed in the first swinging clamp, and a second clamp body hinge hole is formed in the second swinging clamp; the first hinge shaft is rotatably arranged in the first support hinge hole and the first clamp body hinge hole in a penetrating mode, and the second hinge shaft is rotatably arranged in the second support hinge hole and the second clamp body hinge hole in a penetrating mode.
5. The rolling mill roll shifting device according to claim 3, wherein the roll shifting hydraulic cylinder comprises a roll shifting cylinder barrel and a roll shifting cylinder rod, and the roll shifting cylinder rod is hermetically and slidably arranged in the roll shifting cylinder barrel; the roller shifting cylinder barrel is fixedly connected to the fixed support, a driving rod which is vertically arranged is connected to a rod of the roller shifting cylinder barrel, and the driving rod is rotatably connected with the first sliding sleeve and the second sliding sleeve.
6. The roll shifting device of a rolling mill as claimed in claim 5, wherein one end of the roll shifting cylinder rod, which is far away from the roll shifting cylinder barrel, is provided with a piston rod head, the cross section of the piston rod head is arranged in a rectangular shape, the fixed support is provided with a through groove, and the piston rod head can slide along the through groove.
7. The rolling mill roll shifting device according to claim 5, wherein an oil cylinder connecting seat is further arranged on the fixed support, and the roll shifting cylinder barrel is connected to the oil cylinder connecting seat through a buckling plate structure.
8. The rolling mill roll shifting device according to claim 7, wherein two connecting columns are arranged on the side wall of the roll shifting cylinder barrel, a connecting seat arc groove structure is arranged on the oil cylinder connecting seat, a pressing plate arc groove structure is arranged on the buckling pressing plate structure, and the pressing plate arc groove structure can be correspondingly buckled with the connecting seat arc groove structure to clamp the connecting columns.
9. The rolling mill roll shifting device according to claim 8, wherein the connecting seat arc groove structure comprises a first arc groove and a second arc groove, the buckling and pressing plate structure comprises a bent plate, a first buckling and pressing plate and a second buckling and pressing plate, the bent plate is buckled on the side wall of the roll shifting cylinder barrel, the pressing plate arc groove structure comprises a third arc groove on the first buckling and pressing plate and a fourth arc groove on the second buckling and pressing plate, the third arc groove can be buckled with the first arc groove to fix an upward connecting column on the roll shifting hydraulic cylinder, and the fourth arc groove can be buckled with the second arc groove to fix a downward connecting column on the roll shifting hydraulic cylinder.
10. The rolling mill roll shifting device according to claim 9, wherein the first retaining plate and the second retaining plate are fixed to the cylinder connecting base by screws.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403032.2A CN114147071B (en) | 2021-11-24 | 2021-11-24 | Rolling mill roll shifting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403032.2A CN114147071B (en) | 2021-11-24 | 2021-11-24 | Rolling mill roll shifting device |
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| CN114147071A true CN114147071A (en) | 2022-03-08 |
| CN114147071B CN114147071B (en) | 2023-10-27 |
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| Publication number | Publication date |
|---|---|
| CN114147071B (en) | 2023-10-27 |
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