CN115958065A - Large-scale rolling mill frame off-line assembling method - Google Patents
Large-scale rolling mill frame off-line assembling method Download PDFInfo
- Publication number
- CN115958065A CN115958065A CN202211703933.8A CN202211703933A CN115958065A CN 115958065 A CN115958065 A CN 115958065A CN 202211703933 A CN202211703933 A CN 202211703933A CN 115958065 A CN115958065 A CN 115958065A
- Authority
- CN
- China
- Prior art keywords
- rolling mill
- sliding
- hydraulic lifting
- transmission side
- transverse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to an off-line assembling method of a large-scale rolling mill frame, wherein a pre-assembling pit is arranged on the ground outside a rolling mill mounting position, and a rolling mill base is arranged in the pre-assembling pit; a hydraulic lifting sliding device is arranged above the pre-assembly pit, and a ground horizontal sliding device is arranged on the ground at the outer end of the hydraulic lifting sliding device; and respectively hoisting the transmission side rack, the operation side rack and the rolling mill crossbeam to a rolling mill base, and finishing the assembly of the rolling mill rack. The invention is suitable for the installation of large-scale rolling mill frames with the frame height exceeding the hoisting capacity of factory cranes and hindering the passage of factory cranes, a pre-assembly pit is arranged in an open area outside a rolling production line to carry out off-line assembly on a rolling mill, and the large-scale rolling mill frames are installed on a rolling mill base in the pre-assembly pit after horizontal transportation, horizontal steering, air turning and vertical erection through the cooperation of a ground horizontal moving device, a hydraulic lifting sliding device, a rotary cross beam lifting appliance and a workshop traveling crane.
Description
Technical Field
The invention relates to the technical field of large equipment installation, in particular to an off-line assembling method for a large rolling mill stand.
Background
The modern large-scale rolling mill is the core equipment on the rolling process line of a steel mill, and directly determines the product and the quality of a rolled piece. With the rapid development of steel rolling technology, the size and specification of the rolling mill are continuously increased, and the installation quality requirement is continuously improved.
At present, the hoisting technology aiming at the large rolling mill mainly comprises the following steps: the method comprises a basic reservation method hoisting technology, a bracket rotation method hoisting technology, a special hoisting tool hoisting technology, a transverse sliding vertical hydraulic jacking super-large rolling mill hoisting technology, a vertical rolling mill hoisting technology and the like, wherein different hoisting technologies are used for solving different problems, such as insufficient hoisting capacity of traveling cranes in a production workshop, insufficient hoisting height, limited installation environment and the like, the applicable range of each method is different, and the methods all belong to online installation methods.
Disclosure of Invention
The invention provides an off-line assembly method of a large-scale rolling mill frame, which is suitable for the installation of the large-scale rolling mill frame with the frame height exceeding the hoisting capacity of a factory building crane and obstructing the passage of the factory building crane, a pre-assembly pit is arranged in an open area outside a rolling production line to carry out off-line assembly on a rolling mill, and the large-scale rolling mill frame is installed on a rolling mill base in the pre-assembly pit after horizontal transportation, horizontal steering, air turning and vertical erection through the cooperation of a ground horizontal sliding device, a hydraulic lifting sliding device, a rotary cross beam lifting appliance and a workshop traveling crane.
In order to achieve the purpose, the invention adopts the following technical scheme:
an off-line assembly method for a large rolling mill stand comprises the following steps:
1) A pre-assembly pit is arranged on the ground outside a rolling mill mounting position, and a rolling mill base is mounted in the pre-assembly pit; a hydraulic lifting sliding device is arranged above the pre-assembly pit, and a ground horizontal sliding device is arranged on the ground at the outer end of the hydraulic lifting sliding device; the center line of the ground horizontal sliding device and the center line of the hydraulic lifting sliding device are coaxial with the center line of the rolling mill base;
2) Hoisting the transmission side frame to a horizontal sliding device, and sliding the transmission side frame to the lower part of a hydraulic lifting sliding device through a ground horizontal sliding device;
3) The hydraulic lifting and sliding device is provided with a plurality of groups of hydraulic lifting devices, the hydraulic lifting devices are connected with the transmission side rack through a rotary cross beam hanger, the transmission side rack is horizontally lifted and slides to one side of the rolling mill base, and then the transmission side rack horizontally rotates 90 degrees, so that the central line of the transmission side rack is perpendicular to the central line of the rolling mill base;
4) Separating the rotary cross beam hanger from the transmission side frame, arranging a lifting lug at one end of the transmission side frame close to the top to be connected with a plurality of groups of hydraulic lifting devices, and connecting one end of the transmission side frame close to the bottom to a lifting hook of a workshop travelling crane through a steel wire rope; hoisting by a hydraulic lifting device, matching with a workshop traveling crane, and turning the transmission side rack from a horizontal state to a vertical state in the air; finally, mounting the transmission side rack on a rolling mill base;
5) Installing the operation side rack on the base of the rolling mill in the same way as the steps 2) to 4);
6) And (4) mounting a cross beam of the rolling mill, so that the base of the rolling mill, the transmission side rack, the operation side rack and the cross beam of the rolling mill form a whole, and assembling the stand of the rolling mill.
And a rolling mill base buttress is arranged in the pre-assembling pit, and the rolling mill base is supported by the rolling mill base buttress.
The ground horizontal sliding device consists of a sliding track beam, a horizontal sliding beam, a rack supporting beam and a horizontal hydraulic pushing device; 2 sliding track beams are arranged in parallel, and the top of each sliding track beam is provided with a slide way; 2 groups of horizontal sliding Liang Duiying are arranged on the 2 sliding track beams, and the horizontal sliding beams can move along the slide ways under the driving of the horizontal hydraulic thrusters; the 2 frame supporting beams are perpendicular to the horizontal sliding beam, the two ends of each frame supporting beam stretch across the tops of the 2 horizontal sliding beams in the same group, and the frame supporting beams support the transmission side frame/the operation side frame.
The hydraulic lifting sliding device consists of an upright post, a main sliding device, a transverse sliding device, a supporting device and a hydraulic lifting device; the main sliding device consists of a main sliding track beam, a main sliding beam and a main sliding hydraulic pushing device, and the transverse sliding device consists of a transverse sliding track beam, a transverse sliding beam and a transverse sliding hydraulic pushing device; the supporting device consists of a longitudinal supporting beam and a transverse supporting beam; 2 main sliding track beams in the main sliding device are arranged in parallel, and the bottom of each main sliding track beam is supported by a plurality of stand columns respectively; the top of the main sliding track beam is provided with a main slideway, and the main sliding beam can move along the main slideway under the driving of a main sliding hydraulic pushing device; the transverse sliding devices are 2 groups, 2 transverse sliding track beams in each group of transverse sliding devices are arranged in parallel and cross the top of the main sliding beam, a transverse slide way is arranged at the top of each transverse sliding track beam, and each transverse sliding beam can move along the corresponding transverse slide way under the driving of the corresponding transverse sliding pushing device; the supporting devices are 2 groups and are arranged in one-to-one correspondence with the transverse sliding devices; in each group of supporting devices, 2 longitudinal supporting beams and 2 transverse supporting beams are arranged on the tops of corresponding transverse sliding beams in a staggered manner in a groined shape, and the middle parts of the 2 transverse supporting beams are respectively provided with 1 group of hydraulic lifting devices; the hydraulic lifting devices are 4 groups in total, wherein the bottom ends of the steel strand wires in the 2 groups of hydraulic lifting devices are connected with a rotary cross beam lifting appliance, and the bottom ends of the steel strand wires in the other 2 groups of hydraulic lifting devices are respectively provided with riggings.
The rotary cross beam hanger consists of an upper-layer cross beam, a lower-layer cross beam, a vertical shaft and a rotating mechanism; the upper-layer cross beam and the lower-layer cross beam are both horizontally arranged, the upper-layer cross beam is fixedly connected with the vertical shaft, and the lower-layer cross beam is connected with the vertical shaft through a rotating mechanism; under the drive of the rotating mechanism, the lower-layer beam can horizontally rotate around the vertical shaft.
Compared with the prior art, the invention has the beneficial effects that:
1) The large rolling mill is a large wide and thick plate rolling mill (called rolling mill for short), the height of the rack generally exceeds 15 meters, the hoisting height of a factory building crane cannot meet the hoisting requirement of the rack, and the rack can interfere with the factory building crane in a ground assembling mode to influence the normal operation of the factory building crane; the invention adopts the mode of arranging the pre-assembly pit, reduces the relative height of the rolling mill when assembling in the plant, and solves the problems that the assembling height is limited and the operation of a crane of the plant is influenced when assembling;
2) The invention adopts the method of pre-assembling the rolling mill by off-line sinking, the pre-assembling pit is arranged in the open area outside the rolling production line, the rolling mill main body (except the working roll and the supporting roll) is assembled in the pre-assembling pit, the normal operation of the production is not influenced when the rolling mill is assembled, and the assembled rolling mill can be arranged on the target installation position of the rolling mill by integral sliding, thereby greatly shortening the off-line production halt reconstruction period of the rolling mill;
3) The horizontal sliding, horizontal steering, vertical turning and other operations of the rolling mill stand are realized through the cooperation of a ground horizontal sliding device, a hydraulic lifting sliding device, a rotary cross beam lifting appliance and a workshop travelling crane, the whole construction process does not influence normal production, and the device is strong in adaptability, safe and reliable;
4) The hydraulic lifting sliding device integrates a main sliding device, a transverse sliding device and a hydraulic lifting device, the bottom of the hydraulic lifting sliding device is supported by a plurality of stand columns, the stand columns are symmetrically arranged on the pre-assembly pit and two sides of a foundation pit of the rolling mill, a plurality of groups of hydraulic lifting devices can be arranged according to needs, the whole structure is stable, the lifting capacity is strong, the requirements for installing various types of large wide and thick plate rolling mills can be met, the lifting height is reduced, and the safety and reliability of the installation of the large wide and thick plate rolling mills are improved;
5) The pre-assembly pit can be arranged in a wide area far away from a target installation position of the rolling mill, the safety of the operation environment is higher, the influence on the production of a rolling line is small, the pre-assembly pit can meet the space requirement when a rolling mill frame turns horizontally and turns vertically, the assembly height of the rolling mill is greatly reduced, the structural stability is improved, the overhead operation is reduced, and the construction safety is improved.
Drawings
Fig. 1 is a schematic view of the structure of a large rolling stand according to the present invention.
Fig. 2 is a first schematic view (a schematic view of a structure of a ground horizontal displacement device) of an installation process of the transmission side frame.
Fig. 3a is a schematic view (structural front view of a hydraulic lifting sliding device) of the installation process of the transmission side frame.
Fig. 3b is a left side view of fig. 3 a.
Fig. 3c is a top view of fig. 3a (without hydraulic lifting and lowering slides, mainly showing the position of the drive side frame).
Fig. 4 is a third schematic view of the installation process of the transmission side frame of the present invention.
Fig. 5a is a schematic view of the installation process of the transmission side frame of the present invention.
Fig. 5b is a left side view of fig. 5 a.
Fig. 5c is a top view of fig. 5a (without the hydraulic lifting skid, shown primarily to show the position of the drive side frame).
Fig. 6 is a fifth schematic view of the installation process of the transmission-side rack of the present invention.
Fig. 7a is a sixth schematic view of the installation process of the transmission side frame of the present invention.
Fig. 7b is a left side view of fig. 7 a.
Fig. 7c is a top view of fig. 7a (without the hydraulic lifting skid, shown primarily to show the position of the drive side frame).
Fig. 8a is a seventh schematic view of the installation process of the transmission side frame of the present invention.
Fig. 8b is a left side view of fig. 8 a.
Fig. 8c is a top view of fig. 8a (without the hydraulic lifting skid, shown primarily to show the position of the drive side frame).
Fig. 9 is a first schematic view of the installation process of the operation side rack according to the invention.
Fig. 10 is a second schematic view of the installation process of the operation side rack according to the present invention.
Fig. 11 is a third schematic view of the installation process of the operation side rack according to the present invention.
Fig. 12 is a fourth schematic view of the installation process of the operation side frame according to the present invention.
Fig. 13 is a fifth schematic view of the installation process of the operation-side rack according to the present invention.
FIG. 14 is a schematic view of the mounting of the rolling mill beam according to the present invention.
In the figure: 11. rolling mill base 12, transmission side frame 13, operation side frame 14, rolling mill beam 21, sliding track beam 22, slideway 23, horizontal sliding beam 24, horizontal sliding pushing device 25, frame support beam 301, upright column 302, main sliding track beam 303, main sliding beam 304, main sliding pushing device 305, horizontal sliding track beam 306, horizontal sliding beam 307, longitudinal support beam 308, horizontal support beam 309, hydraulic lifting device 310, cable 311, horizontal sliding pushing device 4, rotary cross beam hanger 5, pre-assembly pit 6, lifting lug 7, lifting hook of workshop travelling crane
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The following further describes embodiments of the present invention with reference to the accompanying drawings:
the invention relates to an off-line assembling method of a large rolling mill stand, which comprises the following steps:
1) A preassembly pit 5 is arranged on the ground outside a rolling mill mounting position, and a rolling mill base 11 is mounted in the preassembly pit 5 (shown in figure 3 c); a hydraulic lifting sliding device (shown in figures 3a and 3 b) is arranged above the pre-assembly pit 5, and a ground horizontal sliding device (shown in figure 2) is arranged on the ground at the outer end of the hydraulic lifting sliding device; the central line of the ground horizontal sliding device and the central line of the hydraulic lifting sliding device are coaxial with the central line of the rolling mill base 11;
2) Hoisting the transmission side frame 12 to a horizontal sliding device, and sliding the transmission side frame 12 to the lower part of a hydraulic lifting sliding device through a ground horizontal sliding device (as shown in figures 3 a-3 c);
3) The hydraulic lifting and sliding device is provided with a plurality of groups of hydraulic lifting devices 309, the plurality of groups of hydraulic lifting devices 309 are connected with the transmission side frame 12 through the rotating cross beam hanger 4, the transmission side frame 12 is horizontally lifted and slides to one side of the rolling mill base 11, and then the horizontal rotation is carried out for 90 degrees, so that the central line of the transmission side frame 12 is perpendicular to the central line of the rolling mill base 11 (as shown in fig. 4 and fig. 5 a-5 c);
4) As shown in fig. 6, the rotary cross beam hanger 4 is separated from the transmission side frame 12, a lifting lug 6 is arranged at one end of the transmission side frame 12 close to the top and is connected with a plurality of groups of hydraulic lifting devices 309, and one end of the transmission side frame 12 close to the bottom is connected with a lifting hook 7 of a workshop traveling crane through a steel wire rope; hoisting by a hydraulic lifting device 309, matching with a workshop travelling crane, and turning the transmission side frame 12 from a horizontal state to a vertical state in the air (as shown in fig. 7 a-7 c); finally, the transmission side frame 12 is mounted on the rolling mill base 11 (as shown in fig. 8 a-8 c);
5) Mounting the operation-side stand 13 to the mill base 11 in the same manner as in steps 2) to 4) (as shown in fig. 9 to 13);
6) The rolling stand beam 14 is installed (as shown in fig. 14), so that the rolling stand base 11, the transmission side stand 12, the operation side stand 13 and the rolling stand beam 14 form a whole, and the rolling stand is assembled.
A rolling mill base buttress is arranged in the pre-assembly pit 5, and the rolling mill base 11 is supported by the rolling mill base buttress.
The ground horizontal sliding device consists of a sliding track beam 21, a horizontal sliding beam 23, a rack supporting beam 25 and a horizontal hydraulic pushing device 24; 2 sliding track beams 21 are arranged in parallel, and a slide way 22 is arranged at the top of each sliding track beam 21; the 2 groups of horizontal sliding beams 23 are correspondingly arranged on the 2 sliding track beams 21, and the horizontal sliding beams 23 can be driven by the horizontal hydraulic thrusting device 24 to move along the slide way 22; the 2 frame support beams 25 are arranged perpendicular to the horizontal sliding beams 23, two ends of each frame support beam 25 cross the tops of the 2 horizontal sliding beams 23 in the same group, and the frame support beams 25 support the transmission side frame 12/the operation side frame 13.
The hydraulic lifting sliding device consists of a stand column 301, a main sliding device, a transverse sliding device, a supporting device and a hydraulic lifting device 309; the main sliding device consists of a main sliding track beam 302, a main sliding beam 303 and a main sliding hydraulic pushing device 304, and the transverse sliding device consists of a transverse sliding track beam 305, a transverse sliding beam 306 and a transverse sliding hydraulic pushing device 311; the supporting device is composed of a longitudinal supporting beam 307 and a transverse supporting beam 308; 2 main sliding track beams 302 in the main sliding device are arranged in parallel, and the bottom of each main sliding track beam 302 is supported by a plurality of upright posts 301 respectively; the top of the main sliding track beam 302 is provided with a main slideway, and the main sliding beam 303 can move along the main slideway under the driving of a main sliding hydraulic pushing device 304; the number of the transverse sliding devices is 2, 2 transverse sliding track beams 305 in each group of transverse sliding devices are arranged in parallel and cross the top of the main sliding beam 303, a transverse slide way is arranged at the top of each transverse sliding track beam 305, and the transverse sliding beams 306 can move along the transverse slide way under the driving of the transverse sliding pushing devices 311; the supporting devices are 2 groups and are arranged in one-to-one correspondence with the transverse sliding devices; in each group of supporting devices, 2 longitudinal supporting beams 307 and 2 transverse supporting beams 308 are arranged on the tops of the corresponding transverse sliding beams 306 in a staggered manner in a groined shape, and the middle parts of the 2 transverse supporting beams 308 are respectively provided with 1 group of hydraulic lifting devices 309; the hydraulic lifting devices 309 are 4 groups, wherein the bottom ends of the steel strand wires in 2 groups of hydraulic lifting devices 309 are connected with the rotary cross beam hanger 4, and the bottom ends of the steel strand wires in the other 2 groups of hydraulic lifting devices 309 are respectively provided with a rigging 310.
The rotary cross beam hanger 4 consists of an upper layer cross beam, a lower layer cross beam, a vertical shaft and a rotating mechanism; the upper-layer cross beam and the lower-layer cross beam are both horizontally arranged, the upper-layer cross beam is fixedly connected with the vertical shaft, and the lower-layer cross beam is connected with the vertical shaft through a rotating mechanism; under the drive of the rotating mechanism, the lower-layer beam can horizontally rotate around the vertical shaft.
The principle of the off-line assembling method of the large rolling mill frame is as follows: constructing a pre-assembly pit 5 at a place outside a target installation position of the large rolling mill, and installing a rolling mill base 11 in the pre-assembly pit 5; a hydraulic lifting sliding device is arranged above the pre-assembly pit 5, a ground horizontal sliding device is arranged, a transmission side rack 12 and an operation side rack 13 of the rolling mill are respectively hoisted, firstly, the rolling mill horizontally slides to the lower part of the hydraulic lifting sliding device, then, the hydraulic lifting sliding device is utilized to complete horizontal steering and vertical overturning, and finally, the rolling mill is installed on a rolling mill base 11.
The pre-assembly pit 5 is arranged at a position which does not influence the production of a rolling line, a rolling mill base buttress is arranged in the pre-assembly pit 5, and a rolling mill base 11 is arranged on the rolling mill base buttress.
Taking the central line of a rolling mill base in a pre-assembly pit 5 as an installation central line, symmetrically arranging 2 rows of upright posts 301 at two sides above the pre-assembly pit 5, and then installing a hydraulic lifting sliding device and a ground horizontal sliding device; the hydraulic lifting sliding device is internally provided with a main sliding device and a transverse sliding device, the main sliding device can move along the direction parallel to the installation center line, and the moving direction of the transverse sliding device is vertical to that of the main sliding device; the hydraulic lifting device is arranged on the transverse sliding device and can realize longitudinal and transverse plane movement above the pre-assembly pit; the 2 groups of transverse sliding devices can move independently and do not influence each other.
The ground horizontal sliding device is used for sliding the rolling mill frame to the position below the rolling hydraulic lifting sliding device.
The hoisting of the transmission side frame 12 and the operation side frame 13 of the large rolling mill is completed in sequence, and comprises horizontal transferring, horizontal turning and vertical turning, wherein the horizontal turning is completed by the cooperation of the hydraulic lifting device 309 and the cross beam rotating hanger 4, and the vertical turning is completed by the cooperation of the hydraulic lifting device 309 and a workshop crown block.
The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples.
[ examples ] A method for producing a compound
In this embodiment, the rack of the large-scale wide and thick plate rolling mill is preassembled by using the off-line assembling method for the rack of the large-scale rolling mill, as shown in fig. 1, the rack of the large-scale wide and thick plate rolling mill is composed of a rolling mill base 11, a transmission side rack 12, an operation side rack 13 and a rolling mill cross beam 14, the height exceeds 15 meters, the weight exceeds 500 tons, and the specific installation process is as follows:
the method comprises the following steps: the pre-assembly pit 5 is constructed at a place where production is not affected, and the rolling mill base 11 is installed into the pre-assembly pit 5. The outside of the preassembly pit 5 is provided with a hydraulic lifting sliding device and a ground horizontal sliding device, and a sliding track beam 21 in the ground horizontal sliding device is paved from the unloading position of the rolling mill frame to the lower part of the hydraulic lifting sliding device.
Step two: firstly, constructing a transmission side frame 12; and hoisting the transmission side frame 12 to a ground horizontal sliding device, and transporting the transmission side frame 12 to the lower part of the hydraulic lifting sliding device through horizontal sliding.
Step three: the steel hinge lines of 2 groups of hydraulic lifting devices 309 in the hydraulic lifting sliding device are connected with a rotary cross beam hanger 4, the lower layer cross beam of the rotary cross beam hanger 4 is connected with a transmission side frame 12 through a steel wire rope, and the lower layer cross beam is driven to rotate through a rotating mechanism, so that the horizontal steering of the transmission side frame 12 is completed.
Step four: after the transmission side frame 12 horizontally turns to a proper position, the connection between the rotary cross beam hanger 4 and the transmission side frame 12 is released, the rigging 310 at the bottom end of the steel strand of the other 2 groups of hydraulic lifting devices 309 is connected with the lifting lug 6 arranged at the upper part of the transmission side frame 12, and the transmission side frame 12 is turned to an upright position from a horizontal position through workshop traveling crane matching or matching with the 2 groups of hydraulic lifting devices 309 after the rotary cross beam hanger 4 is removed (the lifting hook 7 of the workshop traveling crane or the rigging 310 of the hydraulic lifting device 309 is connected with the bottom of the transmission side frame 12 through a steel wire rope); the drive-side stand 12 is then moved over the mill base 11 and finally mounted on the mill base 11.
Step five: and repeating the second step to the fourth step, and finishing horizontal sliding, horizontal steering, vertical overturning and installation of the operation side rack 13 by adopting the same method.
Step six: mounting the rolling mill crossbeam 14 and completing the pre-assembly of the whole rolling mill frame.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An off-line assembling method for a large rolling mill stand is characterized by comprising the following steps:
1) A pre-assembly pit is arranged on the ground outside a rolling mill mounting position, and a rolling mill base is mounted in the pre-assembly pit; a hydraulic lifting sliding device is arranged above the pre-assembly pit, and a ground horizontal sliding device is arranged on the ground at the outer end of the hydraulic lifting sliding device; the center line of the ground horizontal sliding device and the center line of the hydraulic lifting sliding device are coaxial with the center line of the rolling mill base;
2) Hoisting the transmission side frame to a horizontal sliding device, and sliding the transmission side frame to the lower part of a hydraulic lifting sliding device through a ground horizontal sliding device;
3) The hydraulic lifting and sliding device is provided with a plurality of groups of hydraulic lifting devices, the hydraulic lifting devices are connected with the transmission side frame through a rotary cross beam hanger, the transmission side frame is horizontally lifted and slides to one side of the rolling mill base, and then the transmission side frame horizontally rotates 90 degrees, so that the central line of the transmission side frame is perpendicular to the central line of the rolling mill base;
4) Separating the rotary cross beam hanger from the transmission side frame, arranging a lifting lug at one end of the transmission side frame close to the top to be connected with a plurality of hydraulic lifting devices, and connecting one end of the transmission side frame close to the bottom to be connected with a lifting hook of a workshop travelling crane through a steel wire rope; hoisting by a hydraulic lifting device, matching with a workshop traveling crane, and turning the transmission side rack from a horizontal state to a vertical state in the air; finally, mounting the transmission side frame on a rolling mill base;
5) Installing the operation side frame on the base of the rolling mill in the same way as the steps 2) to 4);
6) And mounting a rolling mill beam to enable the rolling mill base, the transmission side rack, the operation side rack and the rolling mill beam to form a whole, and finishing the assembly of the rolling mill rack.
2. The method of claim 1, wherein a mill base buttress is disposed in the pre-assembly pit, and the mill base is supported by the mill base buttress.
3. The off-line assembling method for the large rolling mill stand according to claim 1, wherein the ground horizontal sliding device is composed of a sliding track beam, a horizontal sliding beam, a stand support beam and a horizontal hydraulic pushing device; 2 sliding track beams are arranged in parallel, and the top of each sliding track beam is provided with a slide way; 2 groups of horizontal sliding Liang Duiying are arranged on the 2 sliding track beams, and the horizontal sliding beams can move along the slide ways under the driving of the horizontal hydraulic thrusters; the 2 frame supporting beams are perpendicular to the horizontal sliding beam, the two ends of each frame supporting beam stretch across the tops of the 2 horizontal sliding beams in the same group, and the frame supporting beams support the transmission side frame/the operation side frame.
4. The off-line assembly method for the large rolling mill stand according to claim 1, wherein the hydraulic lifting sliding device comprises a column, a main sliding device, a transverse sliding device, a supporting device and a hydraulic lifting device; the main sliding device consists of a main sliding track beam, a main sliding beam and a main sliding hydraulic pushing device, and the transverse sliding device consists of a transverse sliding track beam, a transverse sliding beam and a transverse sliding hydraulic pushing device; the supporting device consists of a longitudinal supporting beam and a transverse supporting beam; 2 main sliding track beams in the main sliding device are arranged in parallel, and the bottom of each main sliding track beam is supported by a plurality of stand columns respectively; the top of the main sliding track beam is provided with a main slideway, and the main sliding beam can move along the main slideway under the driving of a main sliding hydraulic pushing device; the transverse sliding devices are 2 groups, 2 transverse sliding track beams in each group of transverse sliding devices are arranged in parallel and cross the top of the main sliding beam, a transverse slide way is arranged at the top of each transverse sliding track beam, and the transverse sliding beams can move along the transverse slide way under the driving of the transverse sliding thrusters; the supporting devices are 2 groups and are arranged in one-to-one correspondence with the transverse sliding devices; in each group of supporting devices, 2 longitudinal supporting beams and 2 transverse supporting beams are arranged on the tops of corresponding transverse sliding beams in a staggered manner in a groined shape, and the middle parts of the 2 transverse supporting beams are respectively provided with 1 group of hydraulic lifting devices; the hydraulic lifting devices are 4 groups in total, wherein the bottom ends of the steel strand wires in the 2 groups of hydraulic lifting devices are connected with the rotary cross beam lifting appliance, and the bottom ends of the steel strand wires in the other 2 groups of hydraulic lifting devices are respectively provided with riggings.
5. The off-line assembling method for the large rolling mill stand according to claim 1, wherein the rotary cross beam hanger is composed of an upper-layer cross beam, a lower-layer cross beam, a vertical shaft and a rotating mechanism; the upper-layer cross beam and the lower-layer cross beam are both horizontally arranged, the upper-layer cross beam is fixedly connected with the vertical shaft, and the lower-layer cross beam is connected with the vertical shaft through a rotating mechanism; under the drive of the rotating mechanism, the lower-layer beam can horizontally rotate around the vertical shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211703933.8A CN115958065A (en) | 2022-12-29 | 2022-12-29 | Large-scale rolling mill frame off-line assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211703933.8A CN115958065A (en) | 2022-12-29 | 2022-12-29 | Large-scale rolling mill frame off-line assembling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115958065A true CN115958065A (en) | 2023-04-14 |
Family
ID=87361508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211703933.8A Pending CN115958065A (en) | 2022-12-29 | 2022-12-29 | Large-scale rolling mill frame off-line assembling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115958065A (en) |
-
2022
- 2022-12-29 CN CN202211703933.8A patent/CN115958065A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201217616Y (en) | Multifunctional full-hydraulic door frame lifting device | |
| CN101435313A (en) | Top butt-joint type oil rig headframe | |
| CN115924707A (en) | Hoisting method for large rolling mill frame | |
| CN113348289A (en) | Multi-column wind turbine tower and erection method | |
| CN108149589B (en) | Bridge girder erection machine with large span and tunnel box girder | |
| CN207259084U (en) | A kind of transfer pallet fork elevator and the vehicle production line using the elevator | |
| CN219151166U (en) | Large-scale rolling mill frame off-line assembly device | |
| CN115958065A (en) | Large-scale rolling mill frame off-line assembling method | |
| CN205934732U (en) | Cross two girder tire formula railway T roof beam structure bridge crane of tunnel type | |
| CN113089477A (en) | Hanging basket suspension system | |
| CN113090302A (en) | Anchor rod drill carriage | |
| CN109607384B (en) | Turning-over method for cutter head of super-large-diameter shield tunneling machine | |
| CN212269387U (en) | Overhead contact system cantilever installation power assisting arm work vehicle set capable of running in low position | |
| CN110439292A (en) | Fabrication and installation system and construction technology for large-scale closed type industrial stockyard roof truss | |
| CN115382919A (en) | Mounting method for pushing side-sinking assembly main body of large rolling mill | |
| CN214532189U (en) | Roller moving type stereo garage | |
| CN102146739A (en) | Full-terrain three-dimensional parking garage | |
| CN202390106U (en) | Lifting hook portal crane easy to maintain | |
| CN106087763B (en) | It is a kind of to cross the double girder rubber-tyred railway T-girder bridge girder erections of tunnel type and bridging method | |
| CN219156345U (en) | Large-scale rolling mill frame hoist device | |
| CN211496663U (en) | Gantry crane supporting device | |
| CN110116963B (en) | Multi-pivot suspension sharing crane for large-scale hangar | |
| CN201326381Y (en) | Top docking type oil rig derrick | |
| CN201433051Y (en) | Large-scale rack lower boom double-track single-beam lifting crane | |
| CN212503885U (en) | Overhead working truck for contact net |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |