CN110921581B - Modular hoisting equipment for high-rise steel structure and construction method - Google Patents
Modular hoisting equipment for high-rise steel structure and construction method Download PDFInfo
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- CN110921581B CN110921581B CN201911047070.1A CN201911047070A CN110921581B CN 110921581 B CN110921581 B CN 110921581B CN 201911047070 A CN201911047070 A CN 201911047070A CN 110921581 B CN110921581 B CN 110921581B
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- surrounding frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
Abstract
The invention discloses a high-rise steel structure modularization hoisting device, which comprises: the left die frame and the right die frame are erected on one side of the steel structure at the bottom layer of the cold box, and two vertical guide grooves are respectively arranged on the opposite surfaces of the left die frame and the right die frame; a left surrounding frame and a right surrounding frame are arranged between the left die frame and the right die frame, the left surrounding frame and the right surrounding frame are both of concave structures, two guide blocks are fixedly arranged on the surfaces of the left surrounding frame and the right surrounding frame, which are away from the opening part, and are used for being embedded into the guide grooves, the left surrounding frame and the right surrounding frame are detachably connected and are used for surrounding and hooping the high-rise modular steel structure of the cold box, and lifting lugs are arranged on transverse channel steel of the left surrounding frame and the right surrounding frame; and at least two tower cranes are arranged side by side on one side of the left die carrier and the right die carrier, which is far away from the bottom steel structure of the cold box, and are used for hooking the lifting lugs. The invention also discloses a modular hoisting construction method for the high-rise steel structure. The invention converts a large amount of high-altitude vertical space operation tasks into ground or low-altitude operation, greatly reduces the difficulty coefficient of construction and improves the construction efficiency.
Description
Technical Field
The invention relates to the field of chemical engineering construction. More specifically, the invention relates to modular hoisting equipment for a high-rise steel structure and a construction method.
Background
At present, the construction of the high-rise steel structure of the cold box is mostly still the traditional construction technology at home: namely, hoisting a single frame and a connecting beam, and fixing the single frame by using a cable rope after hoisting. A vertical construction method from the ground to the high altitude from the bottom to the top. The traditional construction technology enables the whole construction process to be a construction main line in a ring-buckling mode basically, all the construction processes are front and back, the construction of the next construction process can be carried out only after the construction of the previous process and the acceptance check are finished, the whole construction process is vertical space construction operation, the construction operation space is limited, the construction safety coefficient is low, the construction difficulty is large, the construction safety measure investment is large, and the construction period is long.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide the high-rise steel structure modular hoisting equipment and the construction method, which can convert a large number of high-altitude vertical space operation tasks into ground or low-altitude operation, greatly reduce the difficulty coefficient of construction and improve the construction efficiency.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a modular lifting apparatus for high-rise steel structures, comprising:
the left die frame and the right die frame are erected on one side of the steel structure of the bottom layer of the cold box, the left die frame and the right die frame are symmetrically arranged along the central line of the steel structure of the bottom layer of the cold box, the distance between the left die frame and the right die frame is larger than the width of the steel structure of the bottom layer of the cold box, the height of the left die frame and the height of the right die frame are equal to the height of the steel structure of the bottom layer of the cold box, two vertical guide grooves are respectively arranged on the opposite surfaces of the left die frame and the right die frame, and the guide grooves on the left die frame are respectively opposite;
a left surrounding frame and a right surrounding frame are arranged between the left die carrier and the right die carrier, the left surrounding frame and the right surrounding frame are of concave structures formed by welding channel steel, the opening parts of the left surrounding frame and the right surrounding frame are opposite, two guide blocks are fixedly arranged on the surfaces, away from the opening parts, of transverse channel steel of the left surrounding frame and the right surrounding frame, the two guide blocks on the left surrounding frame are respectively embedded into the two guide grooves on the left die carrier, the two guide blocks on the right surrounding frame are respectively embedded into the two guide grooves on the right die carrier, the longitudinal channel steel of the left surrounding frame is detachably connected with the longitudinal channel steel of the right surrounding frame to surround and hoop a high-rise modular steel structure of a cold box, a first lifting lug is arranged in the middle of the top surface of the transverse channel steel of the left surrounding frame, and a second lifting lug is arranged in the middle of the top surface of the transverse channel steel of the right;
at least two tower cranes are arranged on one sides of the left die carrier and the right die carrier, which are far away from the bottom steel structure of the cold box, in parallel, cantilever parts of the two tower cranes extend towards the direction of the bottom steel structure of the cold box, wherein the two tower cranes are respectively aligned with the left die carrier and the right die carrier, a first cantilever hoisting device capable of moving along a tower crane cantilever is arranged on a tower crane cantilever aligned with the left die carrier and used for hooking a first lifting lug, and a second cantilever hoisting device capable of moving along the tower crane cantilever is arranged on a tower crane cantilever aligned with the right die carrier and used for hooking a second lifting lug;
wherein, each welding has the bracket of two inversions on the side that the high-rise modularization steel construction of cold box is close to left die carrier and right die carrier, and two bracket bottom surfaces on each side are at the same height, the horizontal portion channel-section steel top surface butt that encloses the frame on a left side is close to two bracket bottom surfaces of left die carrier at the high-rise modularization steel construction of cold box, and is close to two bracket symmetries of left die carrier and lies in first lug both sides, the horizontal portion channel-section steel top surface butt that encloses the frame on the right side is close to two bracket bottom surfaces of right die carrier at the high-rise modularization steel construction of cold box, and is close to two bracket symmetries of right die carrier and lies in.
Preferably, the mode that the vertical channel steel of enclosing the frame on the left side and the vertical channel steel of enclosing the frame on the right side can be dismantled and be connected is:
a vertical first ribbed plate is fixedly arranged in a longitudinal channel steel of the left surrounding frame, a first threaded hole is formed in the first ribbed plate, a horizontal first screw rod is connected with the first threaded hole in a threaded manner, one end of the first screw rod extends out of the edge of the longitudinal channel steel of the left surrounding frame and extends towards the right surrounding frame, a U-shaped groove with a groove opening facing towards the right surrounding frame is rotatably connected to the tail end of the first screw rod facing towards the right surrounding frame, the tail end of the first screw rod is connected to the bottom of the U-shaped groove, and a pair of groove walls of the U-shaped groove are provided with vertical through holes in a penetrating manner;
a vertical second ribbed plate is fixedly arranged in a longitudinal channel steel of the right surrounding frame, a second threaded hole is formed in the second ribbed plate, a horizontal second screw rod is connected with the second threaded hole in a threaded manner, one end of the second screw rod extends out of the edge of the longitudinal channel steel of the right surrounding frame and extends towards the left surrounding frame, a circular ring is rotatably connected to the tail end of the second screw rod towards the left surrounding frame, and the diameter of a central hole of the circular ring is the same as that of a through hole in the wall of the U-shaped groove;
when the first screw rod extends towards the direction close to the right surrounding frame or the second screw rod extends towards the direction close to the left surrounding frame, the circular ring can be inserted into the U-shaped groove, the through hole in the wall of the U-shaped groove is coaxial with the center hole of the circular ring and is used for being connected with the inserted pin shaft, and one end of the pin shaft is connected with the hanging ring.
Preferably, be provided with the third tower crane in the middle of two tower cranes, the cantilever of third tower crane also extends to cold box bottom steel structure place direction, be provided with two sets of third cantilever hoisting devices on the cantilever of third tower crane, the lifting hook that each third cantilever hoisting device was put is used for hooking connect the left side and encloses a frame one side and indulge a channel-section steel and enclose the round pin axle rings that a frame one side indulged a channel-section steel on the right side.
Preferably, a first screwing nut is fixedly connected to the first screw rod close to the U-shaped groove, and a second screwing nut is fixedly connected to the second screw rod close to the circular ring.
Preferably, the first rib plate and the second rib plate are both provided with two pieces.
The invention also provides a high-rise steel structure modular construction method using the high-rise steel structure modular hoisting equipment, which comprises the following steps:
manufacturing a cold box high-rise steel framework assembly, transporting the manufactured cold box high-rise steel framework assembly to a construction site, determining a segmented framing scheme according to the construction site and the condition of a tower crane, and setting a framing site to perform framing assembly;
the construction of the bottom steel structure of the cold box is completed on a construction site, the inverted bracket is welded on the side surface of the assembled high-rise modular steel structure of the cold box, and then the assembled high-rise modular steel structure of the cold box is transported between the left surrounding frame and the right surrounding frame;
adjusting the length of the first screw extending out of the longitudinal channel steel of the left surrounding frame and the length of the second screw extending out of the longitudinal channel steel of the right surrounding frame to enable the circular ring to be horizontally inserted into the U-shaped groove, inserting the pin shaft with the hanging ring into the through hole of the U-shaped groove and the central hole of the circular ring, and then screwing the first screw and the second screw to enable the left surrounding frame and the right surrounding frame to surround the high-rise modular steel structure of the cold box;
hooking a first lifting lug on a first cantilever crane device, hooking a second lifting lug on a second cantilever crane device, hooking a pin shaft lifting ring of a longitudinal channel steel on one side of a left enclosing frame and a longitudinal channel steel on one side of a right enclosing frame on each third cantilever crane device, synchronously starting the windlasses of the first cantilever crane device and the second cantilever crane devices to enable a cold box high-layer modular steel structure to vertically ascend along a guide groove, and then starting two third cantilever crane devices to enable the lifting hooks of the third cantilever crane devices not to ascend under stress;
accomplish the construction of being connected of high-rise modularization steel construction of cold box and cold box bottom steel structure, restart two third cantilever hoists and put, will connect the left side and enclose the portion channel-section steel of indulging of frame and the right side and enclose the round pin axle of the portion channel-section steel of indulging of frame and take out from the through-hole and the ring centre bore in the U-shaped groove, retrieve left side and enclose the frame and the right side and enclose the frame, carry out the hoist and mount of next high-rise modularization steel construction of cold box, accomplish until the hoist and mount of all high.
The invention at least comprises the following beneficial effects: the construction technology can convert a large amount of high-altitude vertical operation into ground or low-altitude horizontal operation, the construction safety guarantee coefficient is improved, the operation of constructors is convenient, the construction efficiency is improved by about 30%, the construction period can be shortened by about 20-30 working days in theory compared with the traditional process, and due to the centralized use of a large crane, the construction cost can be saved by 20-25% in comprehensive consideration, and meanwhile, the welding and installation quality can be improved. Meanwhile, some areas which cannot be checked in place by the original quality check can be checked in place completely, the construction quality omission ratio is reduced, the quality check blind area is avoided completely, and the inspection rate reaches 100%.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic side structure view of the modular hoisting equipment for high-rise steel structures according to the present invention;
FIG. 2 is a top view of the modular hoisting equipment for high-rise steel structures according to the present invention;
FIG. 3 is a front view of the working states of the left enclosure frame and the right enclosure frame of the present invention;
FIG. 4 is a left side view of the working states of the left enclosure frame and the right enclosure frame of the present invention;
fig. 5 is an enlarged view of a portion a in a left side view of the working states of the left surrounding frame and the right surrounding frame.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the invention provides a modular hoisting device for a high-rise steel structure, which comprises:
the left die carrier 2 and the right die carrier 3 are erected on one side of the cold box bottom layer steel structure 1, the left die carrier 2 and the right die carrier 3 are symmetrically arranged along the central line of the cold box bottom layer steel structure 1, the distance between the left die carrier 2 and the right die carrier 3 is larger than the width of the cold box bottom layer steel structure 1, the heights of the left die carrier 2 and the right die carrier 3 are equal to the height of the cold box bottom layer steel structure 1, two vertical guide grooves 4 are respectively arranged on the opposite surfaces of the left die carrier 2 and the right die carrier 3, and the guide grooves 4 on the left die carrier 2 are respectively opposite to the guide grooves 4 on the right die carrier 3;
a left surrounding frame 5 and a right surrounding frame 6 are arranged between the left die carrier 2 and the right die carrier 3, the left surrounding frame 5 and the right surrounding frame 6 are both of concave structures formed by welding channel steel, the opening parts of the left surrounding frame 5 and the right surrounding frame 6 are opposite, two guide blocks 7 are fixedly arranged on the transverse channel steel of the left surrounding frame 5 and the transverse channel steel of the right surrounding frame 6 on the surface deviating from the opening parts, the two guide blocks 7 on the left surrounding frame 5 are respectively embedded into the two guide grooves 4 on the left die carrier 2, the two guide blocks 7 on the right surrounding frame 6 are respectively embedded into the two guide grooves 4 on the right die carrier 3, the longitudinal channel steel of the left surrounding frame 5 is detachably connected with the longitudinal channel steel of the right surrounding frame 6 to surround and hoop the high-rise modular steel structure of the cold box, a first lifting lug 8 is arranged in the middle of the top surface of the transverse channel steel of the left enclosure frame 5, and a second lifting lug 9 is arranged in the middle of the top surface of the transverse channel steel of the right enclosure frame 6;
at least two tower cranes 10 are arranged in parallel on one sides of the left die carrier 2 and the right die carrier 3, which are far away from the steel structure 1 at the bottom layer of the cold box, the cantilever parts of the two tower cranes 10 extend towards the direction of the steel structure 1 at the bottom layer of the cold box, wherein the two tower cranes 10 are respectively aligned with the left die carrier 2 and the right die carrier 3, a first cantilever crane device 11 capable of moving along a cantilever of the tower crane 10 is arranged on a cantilever of the tower crane 10 aligned with the left die carrier 2 and used for hooking a first lifting lug 8, and a second cantilever crane device capable of moving along the cantilever of the tower crane 10 is arranged on a cantilever of the tower crane 10 aligned with the right die carrier 3 and used for hooking a second;
wherein, each welding has two corbels 12 of invering on the side that the high-rise modularization steel construction of cold box is close to left die carrier 2 and right die carrier 3, and two corbels 12 bottom surfaces on each side are at the same height, the horizontal portion channel-section steel top surface butt that encloses frame 5 on a left side is close to two corbels 12 bottom surfaces of left die carrier 2 at the high-rise modularization steel construction of cold box, and is close to two corbels 12 symmetrical positions of left die carrier 2 in 8 both sides of first lug, the horizontal portion channel-section steel top surface butt that encloses frame 6 on the right side is close to two corbels 12 bottom surfaces of right die carrier 3 at the high-rise modularization steel construction of cold box, and is close to two corbels 12 symmetrical positions of right die.
Above-mentioned embodiment is in the use, guide slot 4 through left die carrier 2 and right die carrier 3 leads, realized the accurate vertical hoisting of cold box high-rise modularization steel construction 23, and the left side that is used for the hoist and mount encloses frame 5 and right side and enclose frame 6 repeatedly usable, construction cost practices thrift, after cold box high-rise modularization steel construction 23 and cold box bottom steel structure 1 connection construction completion, enclose frame 5 through the split left side and can easily realize removing of lifting device for the frame with the right side, construction efficiency has been improved.
In another embodiment, the longitudinal channel of the left surrounding frame 5 and the longitudinal channel of the right surrounding frame 6 are detachably connected in the following manner:
a vertical first ribbed plate 13 is fixedly arranged in a longitudinal channel steel of the left surrounding frame 5, a first threaded hole is formed in the first ribbed plate 13, a horizontal first screw 14 is connected with the first threaded hole in a threaded manner, one end of the first screw 14 extends out of the edge of the longitudinal channel steel of the left surrounding frame 5 and extends towards the right surrounding frame 6, a U-shaped groove 15 with a notch facing the right surrounding frame 6 is rotatably connected to the tail end of the first screw 14 facing the right surrounding frame 6, the tail end of the first screw 14 is connected to the bottom of the U-shaped groove 15, and a pair of groove walls of the U-shaped groove 15 are provided with vertical through holes in a penetrating manner;
a vertical second ribbed plate 16 is fixedly arranged in a longitudinal channel steel of the right surrounding frame 6, a second threaded hole is formed in the second ribbed plate 16, a horizontal second screw 17 is connected with the second threaded hole in an internal thread manner, one end of the second screw 17 extends out of the edge of the longitudinal channel steel of the right surrounding frame 6 and extends towards the left surrounding frame 5, a circular ring 18 is rotatably connected to the tail end, facing the left surrounding frame 5, of the second screw 17, and the diameter of a central hole of the circular ring 18 is the same as that of a through hole in the wall of the U-shaped groove 15;
when the first screw 14 extends towards the direction close to the right surrounding frame 6 or the second screw 17 extends towards the direction close to the left surrounding frame 5, the ring 18 can be inserted into the U-shaped groove 15, the through hole in the wall of the U-shaped groove 15 is coaxial with the center hole of the ring 18, so that the pin 19 can be inserted into the through hole for connection, and one end of the pin 19 is connected with a lifting ring 20.
In the use process of the embodiment, the connection tightness of the left surrounding frame 5 and the right surrounding frame 6 can be adjusted by rotating the first screw rod 14 or the second screw rod 17, when the left surrounding frame 5 and the right surrounding frame 6 need to be disassembled, only the pin shaft 19 needs to be pulled out, and the task of withdrawing the pin shaft 19 can be mechanically accomplished as described in the following embodiments, without manual operation, which is simple and convenient, greatly improves the construction efficiency, meanwhile, as the U-shaped groove 15 is rotationally connected with the first screw 14 and the circular ring 18 is rotationally connected with the second screw 17, when the first screw 14 or the second screw 17 is rotated, the U-shaped groove 15 and the circular ring 18 can keep horizontal state, and the through hole on the U-shaped groove 15 and the central hole of the circular ring 18 can keep alignment, thereby avoiding the U-shaped groove 15 from being fixedly connected on the first screw 14, or when the ring 18 is fixed on the second screw 17, the rotation of the first screw 14 or the second screw 17 causes a problem that the through hole of the U-shaped groove 15 and the center hole of the ring 18 are not aligned.
In another embodiment, be provided with third tower crane 10 in the middle of two tower cranes 10, the cantilever of third tower crane 10 also extends to cold box bottom steel structure 1 place direction, be provided with two sets of third cantilever hoisting device on the cantilever of third tower crane 10, the lifting hook that each third cantilever hoisting device was put is used for hooking and connecting the left side and encloses frame 5 one side and indulge the round pin axle 19 rings 20 of a channel-section steel and enclose frame 6 one side and indulge a channel-section steel on the right side.
Above-mentioned embodiment is in the use, put through the third cantilever hoist and mount and can take out the round pin axle 19 of connecting left side and enclosing frame 5 and right side and enclosing frame 6, need not manual operation, and is simple and convenient, has improved the efficiency of construction greatly.
In another embodiment, a first screw nut 21 is fixed to the first screw 14 near the U-shaped groove 15, and a second screw nut 22 is fixed to the second screw 17 near the circular ring 18, so that the first screw 14 or the second screw 17 can be screwed conveniently by using an electric wrench or the like without damaging the threads on the first screw 14 or the second screw 17.
In another embodiment, the first rib 13 and the second rib 16 are both provided in two pieces.
The invention also provides a high-rise steel structure modular construction method using the high-rise steel structure modular hoisting equipment, which comprises the following steps:
manufacturing a cold box high-rise steel framework assembly, transporting the manufactured cold box high-rise steel framework assembly to a construction site, determining a segmented framing scheme by combining the construction site and the conditions of a tower crane 10, and setting a framing site to perform assembly and framing;
the construction of the bottom steel structure 1 of the cold box is completed on a construction site, the inverted bracket 12 is welded on the side surface of the assembled high-rise modular steel structure 23 of the cold box, and then the assembled high-rise modular steel structure 23 of the cold box is transported to a position between the left enclosure frame 5 and the right enclosure frame 6;
adjusting the length of the first screw 14 extending out of the longitudinal channel steel of the left surrounding frame 5 and the length of the second screw 17 extending out of the longitudinal channel steel of the right surrounding frame 6 to enable the circular ring 18 to be horizontally inserted into the U-shaped groove 15, inserting the pin shaft 19 with the hanging ring 20 into the through hole of the U-shaped groove 15 and the central hole of the circular ring 18, and then screwing the first screw 14 and the second screw 17 to enable the left surrounding frame 5 and the right surrounding frame 6 to surround and hoop the high-rise modular steel structure 23 of the cold box;
hooking a first lifting lug 8 by a first cantilever crane device 11, hooking a second lifting lug 9 by a second cantilever crane device, hooking a lifting ring 20 of a pin shaft 19 of a longitudinal channel steel at one side of a left enclosing frame 5 and a longitudinal channel steel at one side of a right enclosing frame 6 by each third cantilever crane device, synchronously starting the first cantilever crane device 11 and a winch of the second cantilever crane device to enable a cold box modularized high-rise steel structure 23 to vertically rise along a guide groove 4, starting two third cantilever crane devices to enable a lifting hook of the third cantilever crane device not to be stressed to rise, and moving the first cantilever crane device 11, the second cantilever crane device and the two third cantilever crane devices along a cantilever of a three-seat tower crane 10 when the cold box high-rise modularized steel structure 23 is higher than the tops of the left formwork 2 and the right formwork 3 to enable the cold box modularized high-rise steel structure 23 to be positioned right above the cold box bottom-rise steel structure 1;
accomplish the construction of being connected of high-rise modularization steel construction 23 of cold box and cold box bottom steel structure 1, restart two third cantilever hoists and put, will connect the left side and enclose frame 5 indulge a channel-section steel and the right side and enclose the round pin axle 19 of the portion channel-section steel of indulging of frame 6 and take out from the through-hole of U-shaped groove 15 and ring 18 centre bore, retrieve left side and enclose frame 5 and right side and enclose frame 6, carry out next high-rise modularization steel construction 23's of cold box hoist and mount, accomplish until all high-rise modularization steel construction 23 hoists of cold box.
The construction method changes a large amount of high-altitude vertical operation into ground or low-altitude horizontal operation, the construction safety guarantee coefficient is improved, the operation of constructors is convenient, the construction efficiency is improved by about 30%, the construction period can be shortened by about 20-30 working days theoretically compared with the traditional process, and the construction cost can be saved by 20-25% due to the centralized use of a large crane and comprehensive consideration, and meanwhile, the welding and installation quality can be improved. Meanwhile, some areas which cannot be checked in place by the original quality check can be checked in place completely, the construction quality omission ratio is reduced, the quality check blind area is avoided completely, and the inspection rate reaches 100%.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (5)
1. The utility model provides a high-rise steel construction modularization lifting device which characterized in that includes:
the left die frame and the right die frame are erected on one side of the steel structure of the bottom layer of the cold box, the left die frame and the right die frame are symmetrically arranged along the central line of the steel structure of the bottom layer of the cold box, the distance between the left die frame and the right die frame is larger than the width of the steel structure of the bottom layer of the cold box, the height of the left die frame and the height of the right die frame are equal to the height of the steel structure of the bottom layer of the cold box, two vertical guide grooves are respectively arranged on the opposite surfaces of the left die frame and the right die frame, and the guide grooves on the left die frame are respectively opposite;
a left surrounding frame and a right surrounding frame are arranged between the left die carrier and the right die carrier, the left surrounding frame and the right surrounding frame are of concave structures formed by welding channel steel, the opening parts of the left surrounding frame and the right surrounding frame are opposite, two guide blocks are fixedly arranged on the surfaces, away from the opening parts, of transverse channel steel of the left surrounding frame and the right surrounding frame, the two guide blocks on the left surrounding frame are respectively embedded into the two guide grooves on the left die carrier, the two guide blocks on the right surrounding frame are respectively embedded into the two guide grooves on the right die carrier, the longitudinal channel steel of the left surrounding frame is detachably connected with the longitudinal channel steel of the right surrounding frame to surround and hoop a high-rise modular steel structure of a cold box, a first lifting lug is arranged in the middle of the top surface of the transverse channel steel of the left surrounding frame, and a second lifting lug is arranged in the middle of the top surface of the transverse channel steel of the right;
at least two tower cranes are arranged on one sides of the left die carrier and the right die carrier, which are far away from the bottom steel structure of the cold box, in parallel, cantilever parts of the two tower cranes extend towards the direction of the bottom steel structure of the cold box, wherein the two tower cranes are respectively aligned with the left die carrier and the right die carrier, a first cantilever hoisting device capable of moving along a tower crane cantilever is arranged on a tower crane cantilever aligned with the left die carrier and used for hooking a first lifting lug, and a second cantilever hoisting device capable of moving along the tower crane cantilever is arranged on a tower crane cantilever aligned with the right die carrier and used for hooking a second lifting lug;
the cooling box high-rise modular steel structure comprises a left die carrier, a right die carrier, a left surrounding frame, a right surrounding frame, a left die carrier, a right die carrier, a left frame, a right frame;
the mode that the portion channel-section steel of indulging of frame and the portion channel-section steel of indulging of frame can dismantle the connection of enclosing on the right side on a left side does:
a vertical first ribbed plate is fixedly arranged in a longitudinal channel steel of the left surrounding frame, a first threaded hole is formed in the first ribbed plate, a horizontal first screw rod is connected with the first threaded hole in a threaded manner, one end of the first screw rod extends out of the edge of the longitudinal channel steel of the left surrounding frame and extends towards the right surrounding frame, a U-shaped groove with a groove opening facing towards the right surrounding frame is rotatably connected to the tail end of the first screw rod facing towards the right surrounding frame, the tail end of the first screw rod is connected to the bottom of the U-shaped groove, and a pair of groove walls of the U-shaped groove are provided with through holes;
a vertical second ribbed plate is fixedly arranged in a longitudinal channel steel of the right surrounding frame, a second threaded hole is formed in the second ribbed plate, a horizontal second screw rod is connected with the second threaded hole in a threaded manner, one end of the second screw rod extends out of the edge of the longitudinal channel steel of the right surrounding frame and extends towards the left surrounding frame, a circular ring is rotatably connected to the tail end of the second screw rod towards the left surrounding frame, and the diameter of a central hole of the circular ring is the same as that of a through hole in the wall of the U-shaped groove;
when the first screw rod extends towards the direction close to the right surrounding frame or the second screw rod extends towards the direction close to the left surrounding frame, the circular ring can be inserted into the U-shaped groove, the through hole in the wall of the U-shaped groove is coaxial with the center hole of the circular ring and is used for being connected with the inserted pin shaft, and one end of the pin shaft is connected with the hanging ring.
2. The modular hoisting equipment for the high-rise steel structure as claimed in claim 1, wherein a third tower crane is arranged between the two tower cranes, a cantilever of the third tower crane also extends towards the direction of the bottom steel structure of the cold box, two sets of third cantilever hoisting devices are arranged on a cantilever of the third tower crane, and a lifting hook of each third cantilever hoisting device is used for hooking a pin shaft lifting ring for connecting a longitudinal steel channel on one side of the left enclosure frame and a longitudinal steel channel on one side of the right enclosure frame.
3. The modular hoisting device with the high-rise steel structure as recited in claim 1, wherein a first screwing nut is fixedly connected to the first screw rod near the U-shaped groove, and a second screwing nut is fixedly connected to the second screw rod near the ring.
4. The modular hoisting device with the high-rise steel structure as recited in claim 1, wherein the first rib plate and the second rib plate are provided with two blocks.
5. The modular construction method for the high-rise steel structure by using the modular hoisting equipment for the high-rise steel structure according to claim 2, comprising the following steps:
manufacturing a cold box high-rise steel framework assembly, transporting the manufactured cold box high-rise steel framework assembly to a construction site, determining a segmented framing scheme according to the construction site and the condition of a tower crane, and setting a framing site to perform framing assembly;
the construction of the bottom steel structure of the cold box is completed on a construction site, the inverted bracket is welded on the side surface of the assembled high-rise modular steel structure of the cold box, and then the assembled high-rise modular steel structure of the cold box is transported between the left surrounding frame and the right surrounding frame;
adjusting the length of the first screw extending out of the longitudinal channel steel of the left surrounding frame and the length of the second screw extending out of the longitudinal channel steel of the right surrounding frame to enable the circular ring to be horizontally inserted into the U-shaped groove, vertically inserting the pin shaft with the hanging ring into the through hole of the U-shaped groove and the central hole of the circular ring, and then screwing the first screw and the second screw to enable the left surrounding frame and the right surrounding frame to surround the high-rise modular steel structure of the cold box;
hooking a first lifting lug on a first cantilever crane device, hooking a second lifting lug on a second cantilever crane device, hooking a pin shaft lifting ring of a longitudinal channel steel on one side of a left enclosing frame and a longitudinal channel steel on one side of a right enclosing frame on each third cantilever crane device, synchronously starting the windlasses of the first cantilever crane device and the second cantilever crane devices to enable a cold box high-layer modular steel structure to vertically ascend along a guide groove, and then starting two third cantilever crane devices to enable the lifting hooks of the third cantilever crane devices not to ascend under stress;
accomplish the construction of being connected of high-rise modularization steel construction of cold box and cold box bottom steel structure, restart two third cantilever hoists and put, will connect the left side and enclose the portion channel-section steel of indulging of frame and the right side and enclose the round pin axle of the portion channel-section steel of indulging of frame and take out from the through-hole and the ring centre bore in the U-shaped groove, retrieve left side and enclose the frame and the right side and enclose the frame, carry out the hoist and mount of next high-rise modularization steel construction of cold box, accomplish until the hoist and mount of all high.
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| CN114014158A (en) * | 2021-11-05 | 2022-02-08 | 上海二十冶建设有限公司 | High-altitude assembly adjustment method for super-huge modular air separation cold box |
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