CN113664038A - Short-flow arrangement structure of hot-rolled plate strip continuous rolling mill - Google Patents
Short-flow arrangement structure of hot-rolled plate strip continuous rolling mill Download PDFInfo
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- CN113664038A CN113664038A CN202110956725.8A CN202110956725A CN113664038A CN 113664038 A CN113664038 A CN 113664038A CN 202110956725 A CN202110956725 A CN 202110956725A CN 113664038 A CN113664038 A CN 113664038A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
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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
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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
- B21B2031/021—Integral tandem mill housings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides a short-flow arrangement structure of a hot-rolled plate strip continuous rolling mill, which comprises at least two groups of rolling mills sequentially arranged along the rolling direction, wherein each group of rolling mills comprises a rack and a roller assembly arranged on the rack, the racks of the two adjacent groups of rolling mills are at least partially contacted, the upper parts of the two adjacent racks are connected through at least one group of upper connecting assemblies, the lower parts of the two adjacent racks are connected through at least one group of lower connecting assemblies, and the upper connecting assemblies and the lower connecting assemblies limit the relative movement between the adjacent racks along the vertical direction and the rolling direction. The upper connecting assembly and the lower connecting assembly are used for connecting all the stand into a whole, so that the vibration resistance of all the groups of rolling mills and the whole rolling line is improved, the vibration is small or the vibration is basically eliminated, and the rolling quality is improved; the rolling mills are close to each other, so that the rolling line distance is greatly shortened, the temperature drop of the hot-rolled strip is reduced, the waste heat utilization is good, and the follow-up rolling temperature is ensured to meet the requirements; and reducing the threading accident and the unqualified quality loss of the strip head and tail rolling tolerance.
Description
Technical Field
The invention belongs to the technical field of metallurgical equipment, and relates to a short-flow arrangement structure of a hot-rolled strip continuous rolling mill.
Background
The existing hot-rolled strip continuous rolling mills are arranged in a long flow, the rolling mills are arranged at certain intervals, and devices such as a loop, a guide and guard device are arranged between the adjacent rolling mills, so that the distance between the adjacent rolling mills is larger, the distance of the whole rolling line is longer, taking a rolling mill with a hot-rolled width of 1780mm as an example, the center distance between the adjacent rolling mills is about 5.5 meters, the center distance between 8 groups of frames from an inlet to an outlet is about 38.5 meters, the occupied area of the rolling line is increased on the one hand, and the more main problem is that the rolling temperature of the next rolling mill cannot be ensured along with the increase of the distance of the rolling line, and the rolling efficiency and the rolling quality are influenced; on the other hand, because each group of racks in the prior art is arranged independently, the capability of bearing transverse force and vertical force in the rolling process is weaker, so that the horizontal deformation and the vertical deformation of the racks are larger, the stability of the rolling mill is poor, and the product quality is influenced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a short-flow arrangement structure of a hot-rolled strip continuous rolling mill, which reduces the distance of a rolling line, reduces the temperature drop of a rolled piece, improves the stress performance of a rack and reduces the deformation of the rack.
In order to achieve the above and other related objects, the present invention provides a short-flow layout structure of a hot-rolled strip tandem mill, comprising at least two groups of rolling mills sequentially arranged along a rolling direction, each group of rolling mills comprising a stand and a roll assembly arranged on the stand, the stands of two adjacent groups of rolling mills being at least partially in contact, and the upper parts of the stands of two adjacent groups of rolling mills being connected by at least one group of upper connecting assemblies, the lower parts of the stands of two adjacent groups of rolling mills being connected by at least one group of lower connecting assemblies, the upper and lower connecting assemblies limiting relative movement between the adjacent stands along a vertical direction and the rolling direction; the inlet side and the outlet side of the rolling mill are respectively provided with a guide plate, a roller cooling device and a plate strip cooling device, and the roller cooling device and the plate strip cooling device at each position are arranged on the guide plates at the corresponding positions; the short-flow arrangement structure of the hot-rolled strip tandem mill further comprises strip detection rollers and lifting oil cylinders for driving the strip detection rollers to lift, wherein the strip detection rollers are arranged between the two adjacent groups of racks.
Optionally, each of the racks includes an operating-side housing and a driving-side housing, the operating-side housings of two adjacent racks are connected to one another through a set of upper connecting assemblies and a set of lower connecting assemblies, and the driving-side housings of two adjacent racks are connected to one another through a set of upper connecting assemblies and a set of lower connecting assemblies.
Optionally, go up coupling assembling including horizontal taut component and vertical restriction component, horizontal taut component includes first joint portion, second joint portion and connects the intermediate junction portion between first joint portion and second joint portion, each group the top of frame is provided with the draw-in groove respectively, first joint portion card is gone into in the draw-in groove of one of them group of frame of adjacent two sets of frames, second joint portion card is gone into in the draw-in groove of another group of frame, through horizontal taut component will be adjacent between two sets of frames along rolling direction taut.
Optionally, the first clamping portion and the second clamping portion are respectively locked with the corresponding machine frame through a fastener.
Optionally, the lateral tensioning members are of an H-shaped configuration.
Optionally, the connecting seats are respectively arranged on the opposite sides of the upper portions of the two adjacent groups of racks, the connecting seats of the two adjacent groups of racks are in contact with each other and have a bonding surface along the vertical direction, a transverse key groove is formed in the bonding surface of the connecting seat along the direction perpendicular to the rolling direction, the vertical limiting member is a limiting key installed in the transverse key groove, and the limiting key is simultaneously clamped into the key grooves of the two opposite connecting seats to limit the vertical relative movement of the two adjacent groups of racks.
Optionally, the limiting key includes an upper oblique key and a lower oblique key, the two oblique keys are inserted into the transverse key slot from opposite directions, and a matching surface between the two oblique keys is an inclined surface.
Optionally, the lower part of the opposite side of adjacent frame is provided with first boss and second boss along vertical interval, coupling assembling includes horizontal chucking seat of foundation bolt and connecting key down, horizontal chucking seat card is outside the first boss of adjacent two sets of frames, and is taut around following the rolling direction with two first bosses, the connecting key sets up between the first boss and the second boss of two sets of frames, restricts the vertical relative movement of two frames, the foundation bolt passes chucking seat, first boss, connecting key and second boss after-fixing in foundation slab.
Optionally, the lower surface of the clamping seat is provided with a groove, the first bosses of two adjacent sets of racks are located in the groove, and the groove wall of the groove is blocked at the outer sides of the two first bosses.
Optionally, a guide groove and a hydraulic cylinder are arranged on the machine frame, and the guide plate is mounted on the guide groove through a guide wheel and driven by the hydraulic cylinder to slide along the guide groove.
Optionally, the guide slot is curved, linear or dog-leg.
Optionally, the short-flow arrangement structure of the hot-rolled strip continuous rolling mill further comprises a roll seat for mounting a strip detection roll and a detection roll transmission device, the lift cylinder is mounted below the roll seat of the strip detection roll, and the upper end of the lift cylinder is connected with the roll seat.
Optionally, a gap for installing the belt detection roller is reserved between two adjacent frames, or an avoidance space for installing the belt detection roller is formed in each frame.
As described above, the present invention has the following advantageous effects: the racks are connected together through the upper connecting assembly and the lower connecting assembly, the vertical relative movement between the racks is limited, the relative movement in the front-back direction is limited, and the racks are equivalently connected into a whole, and compared with the traditional rolling mills which are arranged at intervals and independently, the vibration resistance of each rolling mill and the whole rolling line is improved, the vibration is small in the rolling process, or the vibration is basically eliminated, and the rolling quality is improved; and because the rolling mills are close to each other, the rolling line distance is greatly shortened, the temperature drop of the hot-rolled plate strip is reduced, the waste heat utilization is good, and the follow-up rolling temperature is ensured to meet the requirements. And reducing the threading accident and the quality loss caused by the out-of-tolerance rolling tolerance of the head and the tail of the plate strip.
The roller cooling device and the plate strip cooling device at each position are integrated on the guide plates at the corresponding positions, so that the requirement of compact arrangement space of a rack is met, and the structural design is optimized; on the other hand, the positions of the liquid spraying pipeline and all parts of the guide plate are conveniently designed and adjusted integrally, and the modularized disassembly and assembly are convenient.
Compared with the mode of driving the detection roller to swing for detection in the prior art, the lifting oil cylinder is used for driving the strip detection roller to lift for detection in the embodiment, the strip detection roller and the lifting oil cylinder occupy small space, the arrangement is more compact, and the short-process arrangement is favorably realized.
Drawings
FIG. 1 is a front view of a short run layout of a hot rolled strip continuous rolling mill in accordance with an embodiment of the present invention;
FIG. 2 is a top view of a short run arrangement of a hot rolled strip continuous rolling mill in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the connection of adjacent racks in accordance with one embodiment of the present invention;
FIG. 4 is a schematic diagram of a vertical restraining member in accordance with one embodiment of the invention;
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a schematic top view of a cross-bracing member in accordance with an embodiment of the invention;
FIG. 7 is a schematic view of adjacent front and rear racks connected by a lower connecting assembly in accordance with an embodiment of the present invention;
FIG. 8 is a diagram illustrating a force comparison between a rack according to an embodiment of the present invention and a conventional rack;
FIG. 9 is a top view of a web inspection roll coupled to a drive assembly in accordance with an embodiment of the present invention;
FIG. 10 is a schematic view of an integrated arrangement of inlet and outlet guide plates and cooling means in accordance with an embodiment of the present invention;
fig. 11 is a partial view (inlet upper side) of fig. 10.
Part number description:
1-a frame; 1 a-driving side memorial archways; 1 b-operating a side memorial archway; 11-a connecting seat; 12-a guide groove; 13a, 13 b-a first boss; 14a, 14 b-a second boss; 2, assembling a roller; 3, assembling a supporting roller; 4-upper connecting assembly; 41-a vertical restraining member; 42-a transverse tension member; 42 a-a first snap-in portion; 42 b-an intermediate connection; 42 c-a second snap-in portion; 5-a lower connection assembly; 51-a nut; 52-transverse clamping seat; 53-a connecting bond; 54-foundation bolts; 61-strip detection roller; 62-a lift cylinder; 63-a support seat; 64-inspection roller drive; 65-roller seat; 71-hydraulic cylinders; 72-a guide plate; 73-plate belt cooling device; 74-roll cooling means; 75-a guide wheel; 8-roller transmission device.
A: the center distance between adjacent frames of the continuous rolling mill;
b: the distance between the rack transmission side memorial archways and the operation side memorial archways is short;
s; bonding surface
F: maximum rolling force;
fx: the horizontal acting component force (the size and the direction of the component force change along with the size of F) at the connecting position;
fy: the vertical acting component force (the size and the direction of the component force change along with the size of F) at the connecting position;
h: the middle part of the memorial archway is vertically deformed;
h: the middle part of the memorial archway is vertically deformed;
r: horizontally deforming the waist of the memorial archway;
r: horizontally deforming the waist of the memorial archway;
arrow → ← and
↓ represents: the moving direction, or the force-bearing direction, or the deformation direction;
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Examples
As shown in fig. 1 to 3, the short-flow layout structure of a hot-rolled strip tandem mill in this embodiment includes at least two sets of rolling mills sequentially arranged along a rolling direction, each set of rolling mill includes a stand 1 and a roll assembly 2 arranged on the stand 1, the stands 1 of two adjacent sets of rolling mills at least partially contact each other along the rolling direction (or front-back direction, with an inlet side of the rolling mill as a front side), the upper parts of two adjacent front and back machine frames 1 are connected through at least one group of upper connecting components 4, the lower parts of two adjacent machine frames 1 are connected through at least one group of lower connecting components 5, so that the frames 1 of the whole rolling line are connected together, the upper connecting assembly 4 and the lower connecting assembly 5 jointly limit the relative movement between the adjacent frames 1 along the vertical direction and the front-back direction, or the upper and lower connecting members 4 and 5 can restrict the relative movement between the adjacent racks 1 in the vertical direction and the front-rear direction, respectively. The contact comprises integral contact and partial contact, namely the racks 1 can be integrally and directly contacted and abutted, or the upper and lower connecting parts of the racks 1 are contacted, and gaps are reserved among other parts.
By adopting the structure, the racks 1 are connected together through the upper connecting assembly 4 and the lower connecting assembly 5, the vertical relative movement between the racks 1 is limited, the relative movement in the front-back direction is limited, which is equivalent to the connection of the racks as a whole, and compared with the traditional rolling mills which are arranged at intervals and independently, the vibration resistance of each rolling mill and the whole rolling line is improved, the vibration in the rolling process is small, or the vibration is basically eliminated, and the rolling quality is improved; and because the rolling mills are close to each other, the rolling line distance is greatly shortened, the temperature drop of the hot-rolled plate strip is reduced, the waste heat utilization is good, and the follow-up rolling temperature is ensured to meet the requirements. And reduces the strip threading accident of the strip and the quality loss caused by the out-of-tolerance of head and tail rolling.
Of course, the rolling mill also comprises a roll transmission device 8, a support roll assembly 3 (comprising an upper support roll assembly, a lower support roll assembly and the like), a roll changing bracket, a pressing oil cylinder, a roll balancing device (not shown) and the like. The tandem mill can be selected from conventional two-roller mills, four-roller mills, six-roller mills and other existing mills, and one or more of the rolling mills are connected in a combined manner.
Specifically, as shown in fig. 2 and 3, each group of the racks 1 includes an operating side housing window 1b and a driving side housing window 1a, and certainly includes a beam, a base and other structures connected between the operating side housing window 1b and the driving side housing window 1a, the operating side housing windows 1b of the two adjacent front and rear groups of racks 1 are connected through a group of upper connecting assemblies 4 and a group of lower connecting assemblies 5, and the driving side housing windows 1a of the two adjacent front and rear groups of racks 1 are connected through another group of upper connecting assemblies 4 and a group of lower connecting assemblies 5. Namely, the upper parts of two adjacent groups of racks 1 are connected through two groups of upper connecting assemblies 4, and the lower parts are connected through two groups of lower connecting assemblies 5.
As shown in fig. 4 to 6, in one embodiment, the upper connection assembly 4 includes a horizontal tensioning member 42 and a vertical limiting member 41, the horizontal tensioning member 42 includes a first clamping portion 42a, an intermediate connection portion 42b and a second clamping portion 42c, which are sequentially connected from front to back, the intermediate connection portion 42b is connected between the first clamping portion 42a and the second clamping portion 42c, the top of each set of racks 1 is respectively provided with a front clamping slot and a rear clamping slot, one clamping slot is used for installing the second clamping portion 42c of the previous horizontal tensioning member 42, and the other clamping slot is used for installing the first clamping portion 42a of the subsequent horizontal tensioning member 42; the first clamping portion 42a of the transverse tensioning member 42 is clamped into the clamping groove of one of the two adjacent groups of racks 1, and the second clamping portion 42c is clamped into the clamping groove of the other group of racks 1; for example, the first clamping portion 42a of the same transverse tensioning member 42 is clamped into the clamping groove of the previous rack 1, the second clamping portion 42c is clamped into the clamping groove of the next rack 1, the first clamping portion 42a and the second clamping portion 42c are fixed in the front-back direction in the clamping groove, that is, the first clamping portion 42a and the second clamping portion 42c are fixed in the front-back direction of the rack 1 after being installed in the clamping groove, and the two adjacent sets of racks 1 are tensioned in the front-back direction through the transverse tensioning member 42.
As shown in fig. 6, in this example, the transverse tension member 42 is in an H-shaped structure, and the corresponding slot is in a bar shape; the transverse tension members 42 are of unitary construction or are of two oppositely disposed parts in a lying "] [" configuration, i.e., each part is U-shaped.
In another embodiment, the first clamping portion 42a and the second clamping portion 42c are respectively locked with the corresponding machine frame 1 through fasteners, for example, bolts after being installed.
In one embodiment, the upper parts of the opposite sides of the operation side housing windows 1b of the previous frame 1 and the operation side housing windows 1b of the next frame 1 are respectively provided with a connecting seat 11, the connecting seats 11 can be integrated with the corresponding housing windows into a whole, the upper parts of the opposite sides of the transmission side housing windows 1a of the previous frame 1 and the transmission side housing windows 1a of the next frame 1 are respectively provided with a connecting seat 11, and the connecting seats 11 of the two adjacent groups of frames 1 are in front-back contact and abut against each other and have a joint surface S along the vertical direction, as shown in fig. 3; transverse key grooves (namely, left and right directions, not shown) are formed in the joint surfaces of the connecting seats 11 along the direction perpendicular to the front and back directions, namely, key grooves are correspondingly formed in the back side surface of the connecting seat 11 of the previous frame 1 and the front side surface of the connecting seat 11 of the next frame 1, the vertical limiting members 41 are limiting keys arranged in the transverse key grooves, the limiting keys are clamped into the key grooves of the two opposite connecting seats 11 at the same time, the vertical relative movement of the two adjacent groups of frames 1 is limited, and therefore the vertical relative movement limitation between the adjacent frames 1 is achieved.
The connection and disassembly between the frames 1 are facilitated by the above-described lateral tightening members 42 and the vertical restricting members 41. The rolling mills can be conveniently added and reduced or the installation positions of the rolling mills can be adjusted according to the requirements, and 2 to 10 rolling mills can be abutted, wherein 8 groups of frames are illustrated in the example.
As shown in fig. 4 and 5, the limiting key includes two upper and lower inclined keys, the two inclined keys are inserted into the transverse key slot from opposite directions (i.e. left and right directions), and the matching surface between the two inclined keys is an inclined surface. The inclined key and the housing 1 can be further fixed by a fastener to prevent loosening.
As shown in fig. 7, in some embodiments, the lower portions of the opposite sides of the adjacent racks 1 are provided with first bosses 13a, 13b and second bosses 14a, 14b at intervals in the vertical direction, that is, the lower portions of the front and rear sides of the transmission-side housing lane 1a of each rack 1 are provided with first bosses 13a, 13b and second bosses 14a, 14b, and the lower portions of the front and rear sides of the operation-side housing lane 1b of each rack 1 are provided with first bosses 13a, 13b and second bosses 14a, 14 b; the second bosses 14a, 14b are located below the first bosses 13a, 13b with a spacing; the lower connecting assembly 5 comprises a foundation bolt 54, a nut 51, a transverse clamping seat 52 and a connecting key 53, the transverse clamping seat 52 is clamped outside the first bosses 13a and 13b of the two adjacent groups of racks 1, the two first bosses 13a and 13b are tensioned back and forth along the rolling direction, the connecting key 53 is inserted between the first bosses 13a and 13b and the second bosses 14a and 14b of the two groups of racks 1 to limit the vertical relative movement of the two racks 1, the foundation bolt 54 sequentially penetrates through the clamping seat 52, the first bosses 13a and 13b, the connecting key 53 and the second bosses 14a and 14b from top to bottom and then is fixed in a foundation bottom plate, the upper end of the foundation bolt 54 is locked through the nut 51, and the nut 51 is pressed on the transverse clamping seat 52.
The lower surface of the clamping seat 52 is provided with a groove, the first bosses 13a and 13b corresponding to the operation side housing windows 1b (or the transmission side housing windows 1a) of the front and rear frames 1 are located in the groove, the groove walls of the groove are blocked outside the two first bosses 13a and 13b, namely, the groove of the clamping seat 52 is clamped on the first bosses 13a and 13b, and the clamping seat 52 is of a C-shaped structure.
Referring to fig. 8, fig. 8(a) is a schematic diagram of the rack force of the present embodiment, and fig. 8(b) is a schematic diagram of the rack force of the prior art; in this example, the upper parts of the adjacent frames are abutted by the connecting seats 11, and the vertical relative movement is limited by the limiting keys; the front and back direction is tightened by the transverse tightening member 42, the lower part of the adjacent machine frame is tightened by the clamping seat 52, and the bosses are vertically pressed by foundation bolts and connecting keys and fixed with the foundation. Therefore, the stress concentration of the frame is avoided, the vertical deformation and the horizontal deformation are reduced, and the integral vibration resistance is improved. The frame memorial archways are connected through the upper connecting assembly and the lower connecting assembly, stress and deformation are mutually transmitted and limited, and compared with the single or common contact connection, the frame memorial archways achieve the aims of obviously improving the strength, the rigidity, the stability and the vibration resistance under the condition of the same structural size or reducing the total weight and the cost.
As shown in fig. 10 and 11, in some embodiments, a guide plate 72, a roll cooling device 74 and a strip cooling device 73 are provided on each set of rolling mill, two upper and lower inlet guide plates 72 are provided on the inlet side of the rolling mill, and two upper and lower outlet guide plates 72 are provided on the outlet side of the rolling mill; each group of inlet guide plates 72 and outlet guide plates 72 are provided with a roller cooling device 74 and a plate strip cooling device 73, and each inlet guide plate 72 and each outlet guide plate 72 are driven by a hydraulic cylinder 71 arranged on the frame 1 to adjust the position distance between the inlet guide plate 72 and the roller; the roll cooling device 74, the strip cooling device 73 and the corresponding guide plate 72 are integrated into a modular integral structure, so that the integral driving is facilitated through the hydraulic cylinder 71.
The integration into one module has the advantages that: on one hand, the requirement of compact arrangement space of the rack is met, and the structural design is optimized; on the other hand, the positions of the liquid spraying pipeline and all parts of the guide plate are adjusted through the integral design, and the modularized disassembly and assembly are convenient.
The frame 1 is provided with a guide groove 12, each guide plate 72 is arranged on the guide groove 12 through a guide wheel 75, and the hydraulic cylinder 71 drives the guide plates 72 to slide along the guide groove 12, so that the position adjustment between the guide plates and the roller is realized.
The roll cooling device 74 and the strip cooling device 73 respectively comprise a spray pipe and a plurality of nozzles connected to the spray pipe, the spray pipe is connected with the liquid supply device through a liquid supply pipeline, and the spray pipe and the nozzles are both installed on the guide plate 72.
The guide groove 12 may be one of an arc shape, a straight line shape, and a broken line shape, or a combination of two or more shapes.
As shown in fig. 3 and 9, in some embodiments, the short-process arrangement structure of the hot-rolled strip continuous rolling mill further comprises a strip detection roll 61, a roll base 65, a detection roll transmission device 64 and a lift cylinder 62, wherein the strip detection roll 61 is mounted on the roll base 65 through a bearing so as to measure parameters such as strip tension, speed, position and the like, for example, the strip tension can be calculated by measuring the pressure of the lift cylinder 62, and the speed can be calculated by measuring the rotating speed of the strip detection roll 61; the roller seat 65 is supported on the lifting oil cylinder 62, is driven by the lifting oil cylinder 62 to only do lifting movement, and the detection roller transmission device 64 is used for driving the plate strip detection roller 61 to synchronously rotate with the plate strip so as to accurately detect the plate strip speed and the plate shape; the strip detection roller 61 is arranged between two adjacent groups of the racks 1, the lifting oil cylinder 62 is positioned below the roller seat 65 of the strip detection roller 61, and the upper end of the lifting oil cylinder 62 is connected with the roller seat 65. The lift cylinder 62 may be mounted on the frame 1, on the foundation or on another support structure via a support base 63.
Compared with the mode of driving the detection roller to swing for detection in the prior art, the lifting oil cylinder 62 is used for driving the strip detection roller 61 to lift for detection in the embodiment, the strip detection roller 61 and the lifting oil cylinder 62 occupy small space, the arrangement is more compact, and the short-process arrangement is favorably realized.
In one embodiment, a gap for installing the strip detection roller 61 and the lifting cylinder 62 is reserved between two adjacent sets of frames 1 at the middle position of the frames 1; in another embodiment, adjacent frames 1 are in contact, and the frames 1 are provided with an escape space for mounting the strip detection roller 61.
Wherein, the lifting oil cylinder 62 and the roller seat 65 can be arranged at the inner side or the outer side of the memorial archway.
The following is a comparison with the prior art using a rolling mill with a hot rolling width of 1780mm as an example, as shown in the following table:
as shown in the comparison of the table above, for the arrangement distance of 8 rolling mills, the occupied area can be shortened by 14m and reduced by 36% compared with the prior art. If the rough rolling mill is combined, the rolling mill can be reduced by nearly 100 m. Because the distance is shortened, the temperature drop of the rolled piece is reduced, the preheating utilization is good, the subsequent rolling temperature requirement is ensured, the vibration resistance of all the racks 1 which are connected together is greatly improved, the product quality is improved, and the tape threading accident and the head-tail tolerance out-of-tolerance mass loss are reduced by over 36 percent.
According to the invention, the racks 1 are connected together through the upper connecting assembly 4 and the lower connecting assembly 5, the vertical relative movement between the racks 1 is limited, the relative movement in the front-back direction is limited, and the racks 1 are connected into a whole, so that compared with the traditional rolling mills which are arranged at intervals and independently, the vibration resistance of each rolling mill and the whole rolling line is improved, the vibration is small in the rolling process, or the vibration is basically eliminated, and the rolling quality is improved; and because the rolling mills are close to each other, compared with the traditional technology, the rolling mill omits structures such as a loop, a guide and guard and the like, greatly shortens the rolling line distance, reduces the temperature drop of the hot rolled strip, has good waste heat utilization, and ensures that the subsequent rolling temperature meets the requirements.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (13)
1. The utility model provides a short flow arrangement structure of hot rolling slab band tandem mill, includes at least two sets of rolling mills that set gradually along rolling direction, and every group rolling mill includes the frame and sets up the roll assembly in the frame, its characterized in that: the racks of the two adjacent groups of rolling mills are at least partially contacted, the upper parts of the racks of the two adjacent groups of rolling mills are connected through at least one group of upper connecting assembly, the lower parts of the racks of the two adjacent groups of rolling mills are connected through at least one group of lower connecting assembly, and the upper connecting assembly and the lower connecting assembly limit the relative movement between the adjacent racks along the vertical direction and the rolling direction;
the inlet side and the outlet side of the rolling mill are respectively provided with a guide plate, a roller cooling device and a plate strip cooling device, and the roller cooling device and the plate strip cooling device at each position are arranged on the guide plates at the corresponding positions;
the short-flow arrangement structure of the hot-rolled strip tandem mill further comprises strip detection rollers and lifting oil cylinders for driving the strip detection rollers to lift, wherein the strip detection rollers are arranged between the two adjacent groups of racks.
2. The hot rolled strip continuous rolling mill short process arrangement according to claim 1, characterized in that: each rack comprises operation side memorial archways and transmission side memorial archways, the operation side memorial archways of the two adjacent groups of racks are connected through a group of upper connecting assemblies and a group of lower connecting assemblies, and the transmission side memorial archways of the two adjacent groups of racks are connected through a group of upper connecting assemblies and a group of lower connecting assemblies which are additionally arranged.
3. The hot rolled strip continuous rolling mill short process arrangement according to claim 2, characterized in that: go up coupling assembling including horizontal taut component and vertical restriction component, horizontal taut component includes first joint portion, second joint portion and connects the intermediate junction portion between first joint portion and second joint portion, each group the top of frame is provided with the draw-in groove respectively, first joint portion card is gone into in the draw-in groove of one of them a set of frame of adjacent two sets of frames, second joint portion card is gone into in the draw-in groove of another set of frame, through horizontal taut component is taut along rolling direction between with adjacent two sets of frames.
4. The hot rolled strip continuous rolling mill short process arrangement according to claim 3, characterized in that: the first clamping portion and the second clamping portion are locked with the corresponding machine frame through fasteners.
5. The hot rolled strip continuous rolling mill short process arrangement according to claim 3, characterized in that: the transverse tension member is of an H-shaped structure.
6. The hot rolled strip continuous rolling mill short process arrangement according to claim 3, characterized in that: the two adjacent racks are provided with connecting seats on opposite sides of the upper portions of the two adjacent racks respectively, the connecting seats of the two adjacent racks are in contact with each other and are provided with bonding surfaces along the vertical direction, transverse key grooves are formed in the bonding surfaces of the connecting seats along the direction perpendicular to the rolling direction, the vertical limiting members are limiting keys arranged in the transverse key grooves, the limiting keys are clamped into the key grooves of the two opposite connecting seats simultaneously, and the vertical relative movement of the two adjacent racks is limited.
7. The hot rolled strip continuous rolling mill short process arrangement according to claim 6, characterized in that: the limiting key comprises an upper oblique key and a lower oblique key, the two oblique keys are inserted into the transverse key groove from opposite directions, and a matching surface between the two oblique keys is an inclined surface.
8. The hot rolled strip continuous rolling mill short process arrangement according to claim 1, characterized in that: the lower part of the opposite side of adjacent frame is provided with first boss and second boss along vertical interval, coupling assembling includes horizontal chucking seat of ground bolt and connection key down, horizontal chucking seat card is outside the first boss of adjacent two sets of frames, and is taut around rolling direction with two first bosses, the connection key sets up between the first boss and the second boss of two sets of frames, restricts the vertical relative movement of two frames, the ground bolt passes chucking seat, first boss, connection key and second boss after-fixing in foundation slab.
9. The hot rolled strip continuous rolling mill short process arrangement according to claim 8, characterized in that: the lower surface of the clamping seat is provided with a groove, the first bosses of the two adjacent groups of racks are positioned in the groove, and the groove wall of the groove is blocked at the outer sides of the two first bosses.
10. The hot rolled strip continuous rolling mill short process arrangement according to claim 1, characterized in that: the guide plate is arranged on the guide groove through a pulley and driven by the hydraulic cylinder to slide along the guide groove.
11. The hot rolled strip continuous rolling mill short process arrangement according to claim 10, characterized in that: the guide groove is one or the combination of more than two of arc, straight line and fold line.
12. The hot rolled strip continuous rolling mill short process arrangement according to claim 1, characterized in that: the short-flow arrangement structure of the hot-rolled strip continuous rolling mill further comprises a roll seat for mounting a strip detection roll and a detection roll transmission device, wherein the lifting oil cylinder is mounted below the roll seat of the strip detection roll, and the upper end of the lifting oil cylinder is connected with the roll seat.
13. The hot rolled strip continuous rolling mill short process arrangement according to claim 1, characterized in that: and a gap for installing the belt detection roller is reserved between two adjacent groups of frames, or an avoidance space for installing the belt detection roller is arranged on each frame.
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| CN202110956725.8A CN113664038B (en) | 2021-08-19 | 2021-08-19 | Short-flow arrangement structure of hot-rolled strip continuous rolling mill |
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| CN202110956725.8A CN113664038B (en) | 2021-08-19 | 2021-08-19 | Short-flow arrangement structure of hot-rolled strip continuous rolling mill |
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| Publication number | Publication date |
|---|---|
| CN113664038B (en) | 2023-06-27 |
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