CN110042752B - Mobile hanging basket for aloft work at bottom of bridge steel box girder and operation method - Google Patents
Mobile hanging basket for aloft work at bottom of bridge steel box girder and operation method Download PDFInfo
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- CN110042752B CN110042752B CN201910424221.4A CN201910424221A CN110042752B CN 110042752 B CN110042752 B CN 110042752B CN 201910424221 A CN201910424221 A CN 201910424221A CN 110042752 B CN110042752 B CN 110042752B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 169
- 239000010959 steel Substances 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 24
- 238000010276 construction Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a movable hanging basket for overhead working at the bottom of a bridge steel box girder and an operation method, wherein the movable hanging basket comprises an operation platform, a steel wire rope and a chain block, the operation platform consists of upright posts, cross bars and connecting rods, the four cross bars are connected end to form a rectangular frame, the four upright posts are vertically arranged, the bottom ends of the four upright posts are positioned at four vertexes of the rectangular frame, a plurality of supporting rods are arranged in the rectangular frame, and a backing plate is paved on the supporting rods; the two connecting rods are transversely parallel to the steel box girder to be operated, and the two ends of each connecting rod are respectively fixed with the upper ends of the two corresponding vertical rods; the two steel wire ropes are longitudinally arranged in parallel along the steel box girder to be operated; the top ends of the four upright posts are respectively movably connected with the corresponding steel wire ropes; the two chain blocks are arranged on two sides of the longitudinal operation platform of the steel box girder to be operated, one end of each chain block is arranged at one end of the steel box girder to be operated in the longitudinal direction, and the other end of each chain block is connected with the corresponding connecting rod. The movable hanging basket does not influence traffic under the bridge and has low cost.
Description
Technical Field
The invention belongs to the technical field of construction of building steel structures, and particularly relates to a movable hanging basket for overhead operation of the bottom of a bridge steel box girder and an operation method.
Background
In municipal transportation bridge engineering, a steel box girder structure is generally adopted in a large-span section of a pier, the section of the steel box girder in the form is large, the transverse length and the longitudinal length are large, and a construction method of manufacturing, field assembly and integral hoisting by a factory sectional framing unit module is generally adopted, but sometimes, for reasons of controlling engineering cost and reducing mechanical cost or in some municipal road reconstruction engineering without field assembly sites, the construction method of sectional framing hoisting and high-altitude butt joint folding into a whole is required to be considered. However, for a bridge with a bidirectional lane, the width of a single steel box girder is insufficient, two or more steel box girders are required to be arranged in parallel to widen the width of the bridge, when high-altitude operation such as welding, cleaning and polishing is required to be performed on high-altitude butt-joint and folding welding seams of the two parallel steel box girders after high-altitude hoisting of the two bridge piers is completed, an operation platform is required to be erected, and the traditional method is to build an integral scaffold, so that normal vehicle traffic under the bridge can be influenced, and the cost is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a movable hanging basket for overhead operation at the bottom of a steel box girder of a bridge, which does not affect the traffic of vehicles under the bridge, has low cost and high utilization rate, and an operation method. The high-altitude operation movable hanging basket is used for welding, cleaning, polishing and other high-altitude operations of the butt joint of the bottom plates of the two parallel steel box girders.
The technical scheme of the invention is realized as follows:
the movable hanging basket for overhead operation at the bottom of the bridge steel box girder comprises an operation platform, a steel wire rope and a chain block, wherein the operation platform consists of four vertical rods, four cross rods and two connecting rods, the four cross rods are connected end to form a rectangular frame, the four vertical rods are vertically arranged, the bottom ends of the four vertical rods are positioned at four vertexes of the rectangular frame, a plurality of supporting rods are arranged in the rectangular frame, and a backing plate corresponding to the rectangular frame in size is paved on the supporting rods; the two connecting rods are parallel to the transverse direction of the steel box girder to be operated, and the two ends of each connecting rod are fixedly connected with the upper ends of the corresponding two vertical rods respectively.
The two steel wire ropes are longitudinally arranged in parallel along the steel box girder to be operated and are respectively fixed on the lower surfaces of the bottom plates at two sides of the joint of the bottom plate of the steel box girder to be operated, the length of each steel wire rope is equal to the length of the bottom plate of the steel box girder to be operated and is parallel to the plane of the bottom plate of the steel box girder to be operated, and the distance between the two steel wire ropes is equal to the distance between two vertical rods positioned in the transverse direction of the steel box girder to be operated; the top ends of the four vertical rods are movably connected with the corresponding steel wire ropes respectively, so that the operation platform can reciprocate in the longitudinal directions of the two steel wire ropes.
The two chain blocks are respectively arranged on two sides of the longitudinal operation platform of the steel box girder to be operated, are positioned on the same straight line and are longitudinally parallel to the steel box girder to be operated, one end of each chain block is arranged at one end of the steel box girder to be operated in the longitudinal direction, and the other end of each chain block is connected with the corresponding connecting rod.
Further, a lifting lug I is arranged at the midpoint of each of the two connecting rods, a lifting lug II is arranged at two ends of the lower surface of the steel box girder bottom plate to be operated, which corresponds to the lifting lug I, one end of the chain block is hung on the lifting lug I, and the other end of the chain block is hung on the corresponding lifting lug II.
Further, lifting lugs III are arranged at the top ends of the four vertical rods, the lifting lugs III are hung on the steel wire rope through shackles, the shackles comprise a buckle body and shaft pins, and the shaft pins are inserted into the buckle body and the lifting lugs III to hang the operation platform on the steel wire rope.
Further, each steel wire rope is fixed on the lower surface of the bottom plate of the steel box girder to be operated through two lifting lugs IV, and the lifting lugs IV are fixed on two longitudinal ends of the steel box girder to be operated.
Further, four sides of the operation platform are provided with a plurality of even protection rods, and each protection rod is horizontally arranged between two adjacent vertical rods and connects the vertical rods.
Further, the two support rods are respectively arranged along two diagonal lines of the rectangular frame.
Further, four side surfaces of the lower end of the operation platform are provided with protection plates, the protection plates are connected end to form a closed rectangular frame, the lower end of the rectangular frame is correspondingly welded with the base plate, and small parts are prevented from falling off the operation platform.
The operation method of the overhead operation mobile hanging basket at the bottom of the bridge steel box girder comprises the following steps:
(1) Welding an assembly operation platform on the ground, welding four cross bars, welding supporting rods in a rectangular frame formed by the four cross bars, welding upright rods at four vertexes of the rectangular frame, respectively welding connecting rods at the upper ends of the two upright rods of the symmetry plane of the rectangular frame, and finally paving a backing plate in the rectangular frame at the bottom surface of the operation platform;
(2) After the operation platform is lifted to the working height below the bottom plate of the steel box girder to be operated, two steel wire ropes are respectively and movably connected with the top ends of four upright rods of the operation platform, and two ends of the two steel wire ropes are respectively fixed at two ends of the lower surface of the longitudinal bottom plate of the steel box girder to be operated, so that the seam of two parallel steel box girders in parallel is positioned between the two steel wire ropes, and the operation platform can longitudinally reciprocate on the steel box girder to be operated;
(3) Two chain blocks are arranged on two sides of an operation platform positioned in the longitudinal direction of the steel box girder to be operated, one end of each chain block is connected with one end of the steel box girder to be operated in the longitudinal direction, and the other end of each chain block is connected with a connecting rod of the operation platform, so that the operation platform is effectively limited in the longitudinal direction of the steel box girder to be operated by adjusting the two chain blocks;
(4) The operation platform is arranged on the operation platform to perform high-altitude operation on the steel box girder to be operated, the operation platform is moved on the steel wire rope in a mode of tightening one chain block and loosening the other chain block, and then the two chain blocks are fixed, so that the fixed limit of the operation platform is realized, the operation is performed on the steel box girder above the operation platform by the operation platform, the operation is repeated, and the high-altitude operation on the steel box girder between two piers is completed.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention takes the steel box girder as the bearing carrier, avoids erecting a vertical scaffold and the like, does not influence the normal passing of vehicles under the bridge, has small occupied space of the movable hanging basket, and can be suitable for complex construction site sites such as limited space and the like; after the overhead operation of the steel box girder between two piers is completed by utilizing the movable hanging basket, the steel box girder can be used for the overhead operation of the steel box girder between the next two piers, and thus the utilization rate is high.
2. According to the invention, the steel wire rope is arranged as the moving track, the operation platform is moved and fixed by adjusting the chain blocks at two sides of the operation platform, a ground operation frame is not required to be erected, the installation and the disassembly are convenient, the moving mode and the fixing mode are convenient and quick, and the labor efficiency is improved.
3. The overhead operation mobile hanging basket has the advantages of less material consumption, high efficiency, high utilization rate and low amortization cost, and the overhead operation avoids the application of large-scale hoisting equipment, thereby having obvious economic benefit.
Drawings
FIG. 1-schematic structural diagram of the present invention.
Wherein: 1-an operation platform; 11-a cross bar; 12-backing plate; 13-standing the pole; 14-a guard bar; 15-lifting lug III; 16-connecting rods; 17-lifting lug I; 2-lifting lug IV; 3-a steel wire rope; 4-shackle; 5-lifting lug II; 6-chain pouring; 7, a steel box girder to be operated.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Referring to fig. 1, a movable hanging basket for overhead working at the bottom of a bridge steel box girder comprises an operation platform 1, a steel wire rope 3 and a chain block 6, wherein the operation platform 1 consists of four vertical rods 13, four cross rods 11 and two connecting rods 16, the four cross rods 11 are connected end to form a rectangular frame, the four vertical rods 13 are vertically arranged, the bottom ends of the four vertical rods are positioned at four vertexes of the rectangular frame, a plurality of supporting rods are arranged in the rectangular frame, and a base plate 12 corresponding to the rectangular frame in size is paved on the supporting rods; the two connecting rods 16 are parallel to the transverse direction of the steel box girder 7 to be operated, and the two ends of each connecting rod 16 are fixedly connected with the upper ends of the corresponding two vertical rods 13 respectively.
In the embodiment, the cross bars, the vertical bars and the connecting rods are square steel pipes with the outer diameters of 60mm multiplied by 60mm and the thicknesses of 4mm, and the lengths of the four cross bars are 1m, so that the rectangular frames formed by the cross bars are square, and an operator and a small-sized device can be accommodated. The backing plate is a steel plate with the thickness of 4mm, and the operation platform formed by the method is an operation platform with a square bottom surface.
The two steel wire ropes 3 are longitudinally arranged in parallel along the steel box girder 7 to be operated and are respectively fixed on two longitudinal sides of the joint of the bottom plate of the steel box girder 7 to be operated, and are fixed on the lower surface of the bottom plate, the length of each steel wire rope 3 is equal to the length of the bottom plate of the steel box girder 7 to be operated and is parallel to the plane of the bottom plate of the steel box girder 7 to be operated, and the distance between the two steel wire ropes 3 is equal to the distance between two vertical rods 13 positioned in the transverse direction of the steel box girder 7 to be operated; the top ends of the four upright posts 13 are respectively movably connected with the corresponding steel wire ropes 3, so that the operation platform 1 can reciprocate in the longitudinal directions of the two steel wire ropes 3.
The steel wire rope is a spiral steel wire bundle formed by twisting steel wires with mechanical properties and geometric dimensions meeting requirements together according to a certain rule, and is used as a moving track for bearing an operation platform. After the steel wire rope is arranged in this way, the two parallel steel box girder bottom plates are abutted against each other just above the operation platform, and when working aloft, the operation platform can weld, polish or clean the abutted against each other by longitudinally moving the steel wire rope.
The two chain blocks 6 are respectively arranged on two sides of the operation platform 1 in the longitudinal direction of the steel box girder to be operated, the two chain blocks 6 are positioned on the same straight line and are longitudinally parallel to the steel box girder to be operated 7, one end of each chain block 6 is arranged at one end in the longitudinal direction of the steel box girder to be operated 7, and the other end of each chain block 6 is connected with the corresponding connecting rod 16.
The chain block is a hand hoisting tool which is easy to use and convenient to carry. Operating personnel can realize the removal of operation platform on wire rope through taut a chain block, loosen a chain block at high altitude construction in-process, then after two fixed chain blocks, can fix the spacing with operation platform on wire rope, make things convenient for operating personnel to operate.
And a lifting lug I17 is arranged at the middle point of each of the two connecting rods 16, two lifting lugs II 5 are respectively arranged at two ends of the lower surface of the bottom plate of the steel box girder 7 to be operated, which corresponds to the lifting lug I17, one end of the chain is hung on the lifting lug I17, and the other end of the chain is hung on the corresponding lifting lug II 5.
The top ends of the four vertical rods 13 are provided with lifting lugs III 15, the lifting lugs III 15 are hung on the steel wire rope 3 through shackles 4, the shackles 4 comprise buckle bodies and shaft pins, and the shaft pins are inserted into the buckle bodies and the lifting lugs III 15 so as to hang the operation platform on the steel wire rope 3.
The shackle is a rigging and is cast from alloy steel.
Each steel wire rope 3 is fixed on the lower surface of the bottom plate of the steel box girder 7 to be operated through two lifting lugs IV 2, and the lifting lugs IV 2 are fixed on two longitudinal ends of the steel box girder 7 to be operated.
Four sides of the operation platform 1 are provided with a plurality of uniform protection rods 14, and each protection rod 14 is horizontally arranged between two adjacent upright rods 13 and connects the upright rods 13. In this embodiment, the guard bar is a square steel pipe with an outer diameter of 30mm×30mm and a thickness of 3 mm.
The number of the supporting rods is two, and the supporting rods are respectively arranged along two diagonal lines of the rectangular frame. In the embodiment, the supporting rods are square steel pipes with the outer diameter of 60mm multiplied by 60mm and the thickness of 4mm, and the supporting rods are arranged in the rectangular frame in a differential crossed triangular structure, so that the stability of the supporting rods can be effectively enhanced.
The four sides of the lower end of the operation platform are provided with protection plates, the protection plates are connected end to form a closed rectangular frame, the lower end of the rectangular frame is correspondingly welded with the base plate, and small parts are prevented from falling off the operation platform. The skirting board with the thickness of 4mm is selected as the protection plate.
The operation method of the overhead operation mobile hanging basket at the bottom of the bridge steel box girder comprises the following steps:
(1) Welding four lifting lugs IV and two lifting lugs II on the lower surface of a longitudinal bottom plate of the steel box girder to be operated in advance, wherein the four lifting lugs IV are symmetrically arranged at two longitudinal ends of the steel box girder to be operated in pairs and are respectively positioned at two sides of a seam of the two parallel steel box girder bottom plates of the steel box girder to be operated, namely the two lifting lugs IV positioned on the same longitudinal side of the steel box girder to be operated are respectively arranged at two ends of one steel box girder bottom plate of the steel box girder to be operated; the two lifting lugs II are also welded at the two longitudinal ends of the steel box girder to be operated, and the lifting lugs II are positioned between the two transverse lifting lugs IV of the steel box girder to be operated;
(2) Welding an assembly operation platform on the ground, welding four cross bars, welding supporting rods in a rectangular frame formed by the four cross bars, welding upright rods at four vertexes of the rectangular frame, respectively welding connecting rods at the upper ends of the two upright rods of a symmetry plane of the rectangular frame, paving a backing plate and a welding protection plate in the rectangular frame at the bottom surface of the operation platform, respectively welding a lifting lug I at the middle point of the outer sides of the two connecting rods, and simultaneously welding lifting lugs III at the top ends of the four upright rods;
(3) The four shackle bodies are respectively inserted into the center holes of the corresponding lifting lugs III, and then the shaft pins are screwed down so as to movably connect the lifting lugs III with the shackle;
(4) After the operation platform is lifted to the working height below the bottom plate of the steel box girder to be operated, one end of each of the two steel wire ropes passes through a central hole of a lifting lug IV welded at the upper end of the bottom plate of the steel box girder to be operated and is locked and fixed, the other end sequentially passes through buckle bodies of two shackles corresponding to lifting lugs III arranged on two vertical rods of the steel box girder to be operated, and then passes through a central hole of the lifting lug IV welded at the other end of the steel box girder to be operated and is locked and fixed, so that a joint of two parallel steel box girders is positioned between the two steel wire ropes, the operation platform and the steel wire ropes can be movably connected, and the operation platform can reciprocate in the longitudinal direction of the two steel wire ropes;
the operation platform is generally not hoisted by a hoisting truck, because the height of the municipal bridge steel box girder from the ground is not high, and the hoisting truck is not suitable; usually, a small operating platform is lifted to a specified height by adopting a chain block, a lifting lug can be additionally arranged on a steel box girder bottom plate, then the chain block is lifted to a working height, and the chain block can be directly realized by utilizing a lifting lug II and a chain block which are arranged on the steel box girder bottom plate, and the chain block is specifically as follows: one end of the chain block is hung on the lifting lug II, the other end of the chain block is hung on the operating platform, and then the chain block is pulled to enable the operating platform to reach the working height.
(5) Two chains are arranged on two sides of the longitudinal operation platform of the steel box girder to be operated, so that the chains are hung on a lifting lug II at one longitudinal end of the steel box to be operated, and the other end of the chain is hung on a lifting lug I of a connecting rod of the operation platform, and therefore the operation platform is effectively limited on the longitudinal operation platform of the steel box girder to be operated by adjusting the two chains.
(6) When the steel box girder to be operated is operated at high altitude, an operator stands on a backing plate of an operation platform, operation equipment is placed on the operation platform, the operation platform is moved on a steel wire rope by tightening one chain block and loosening the other chain block, and then the two chain blocks are fixed, so that the fixed limit of the operation platform is realized, the operator operates the steel box girder above the operation platform, and the operation is repeated to finish the high altitude operation of the steel box girder between two bridge piers.
When the overhead operation movable hanging basket is used, the hanging steel box girder is used as a bearing carrier, two groups of parallel steel wire ropes are fixed and two groups of chain links are hung by welding lifting lugs on the bottom plate of the hanging steel box girder, so that the problem that normal vehicle traffic is influenced due to the fact that a vertical scaffold is erected by a conventional method is avoided, and the overhead operations such as bottom plate welding, cleaning and polishing in the steel box girder installation process in municipal transportation bridge engineering are effectively solved, so that the cost is low and the efficiency is high.
Finally, it should be noted that the above-mentioned examples of the present invention are only illustrative of the present invention and are not limiting of the embodiments of the present invention. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. Not all embodiments are exhaustive. Obvious changes and modifications which are extended by the technical proposal of the invention are still within the protection scope of the invention.
Claims (5)
1. The movable hanging basket for overhead working at the bottom of the bridge steel box girder is characterized by comprising an operation platform, a steel wire rope and a chain block, wherein the operation platform consists of four vertical rods, four cross rods and two connecting rods, the four cross rods are connected end to form a rectangular frame, the four vertical rods are vertically arranged, the bottom ends of the four vertical rods are positioned at four vertexes of the rectangular frame, a plurality of supporting rods are arranged in the rectangular frame, and a backing plate corresponding to the rectangular frame in size is paved on the supporting rods; the two connecting rods are parallel to the transverse direction of the steel box girder to be operated, and the two ends of each connecting rod are fixedly connected with the upper ends of the two corresponding upright rods respectively;
the two steel wire ropes are longitudinally arranged in parallel along the steel box girder to be operated and are respectively fixed on the lower surfaces of the bottom plates at two sides of the joint of the bottom plate of the steel box girder to be operated, the length of each steel wire rope is equal to the length of the bottom plate of the steel box girder to be operated and is parallel to the plane of the bottom plate of the steel box girder to be operated, and the distance between the two steel wire ropes is equal to the distance between two vertical rods positioned in the transverse direction of the steel box girder to be operated; the top ends of the four upright posts are respectively movably connected with the corresponding steel wire ropes, so that the operation platform can reciprocate in the longitudinal directions of the two steel wire ropes;
the two chain blocks are respectively arranged at two sides of an operation platform in the longitudinal direction of the steel box girder to be operated, are positioned on the same straight line and are longitudinally parallel to the steel box girder to be operated, one end of each chain block is arranged at one end of the steel box girder to be operated in the longitudinal direction, and the other end of each chain block is connected with a corresponding connecting rod;
a lifting lug I is arranged at the middle point of each of the two connecting rods, a lifting lug II is arranged at two ends of the lower surface of the steel box girder bottom plate to be operated, which corresponds to the lifting lug I, one end of the chain block is hung on the lifting lug I, and the other end of the chain block is hung on the corresponding lifting lug II;
the top ends of the four vertical rods are provided with lifting lugs III, the lifting lugs III are hung on the steel wire rope through shackles, the shackles comprise buckle bodies and shaft pins, and the shaft pins are inserted into the buckle bodies and the lifting lugs III so as to hang the operation platform on the steel wire rope;
each steel wire rope is fixed on the lower surface of the bottom plate of the steel box girder to be operated through two lifting lugs IV, and the lifting lugs IV are fixed on two longitudinal ends of the steel box girder to be operated.
2. The movable hanging basket for aloft work of the bottom of a bridge steel box girder according to claim 1, wherein a plurality of protection rods are uniformly arranged on four sides of the operation platform, and each protection rod is horizontally arranged between two adjacent vertical rods and connects the vertical rods.
3. A bridge steel box girder bottom overhead working mobile basket according to claim 1 wherein the number of support bars is two and arranged along two diagonals of the rectangular frame respectively.
4. The movable hanging basket for aloft work of the bottom of the bridge steel box girder according to claim 1, wherein the four sides of the lower end of the operation platform are provided with protection plates, the protection plates are connected end to form a closed rectangular frame, the lower end of the rectangular frame is correspondingly welded with the base plate, and small parts are prevented from falling from the operation platform.
5. An operation method of a bridge steel box girder bottom overhead operation mobile hanging basket is characterized by utilizing the bridge steel box girder bottom overhead operation mobile hanging basket according to any one of claims 1-4 to operate, and specifically comprises the following steps:
(1) Welding an assembly operation platform on the ground, welding four cross bars, welding supporting rods in a rectangular frame formed by the four cross bars, welding upright rods at four vertexes of the rectangular frame, respectively welding connecting rods at the upper ends of the two upright rods of the symmetry plane of the rectangular frame, and finally paving a backing plate in the rectangular frame at the bottom surface of the operation platform;
(2) After the operation platform is lifted to the working height below the bottom plate of the steel box girder to be operated, two steel wire ropes are respectively and movably connected with the top ends of four upright rods of the operation platform, and two ends of the two steel wire ropes are respectively fixed at two ends of the lower surface of the longitudinal bottom plate of the steel box girder to be operated, so that the seam of two parallel steel box girders in parallel is positioned between the two steel wire ropes, and the operation platform can longitudinally reciprocate on the steel box girder to be operated;
(3) Two chain blocks are arranged on two sides of an operation platform positioned in the longitudinal direction of the steel box girder to be operated, one end of each chain block is connected with one end of the steel box girder to be operated in the longitudinal direction, and the other end of each chain block is connected with a connecting rod of the operation platform, so that the operation platform is effectively limited in the longitudinal direction of the steel box girder to be operated by adjusting the two chain blocks;
(4) The operation platform is arranged on the operation platform to perform high-altitude operation on the steel box girder to be operated, the operation platform is moved on the steel wire rope in a mode of tightening one chain block and loosening the other chain block, and then the two chain blocks are fixed, so that the fixed limit of the operation platform is realized, the operation is performed on the steel box girder above the operation platform by the operation platform, the operation is repeated, and the high-altitude operation on the steel box girder between two piers is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424221.4A CN110042752B (en) | 2019-05-21 | 2019-05-21 | Mobile hanging basket for aloft work at bottom of bridge steel box girder and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424221.4A CN110042752B (en) | 2019-05-21 | 2019-05-21 | Mobile hanging basket for aloft work at bottom of bridge steel box girder and operation method |
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| Publication Number | Publication Date |
|---|---|
| CN110042752A CN110042752A (en) | 2019-07-23 |
| CN110042752B true CN110042752B (en) | 2024-03-12 |
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| CN114457688B (en) * | 2022-02-14 | 2023-06-02 | 中建七局安装工程有限公司 | Bridge folding section assembly type operation platform |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653504Y (en) * | 2003-09-30 | 2004-11-03 | 武汉理工大学 | Suspending basket for bridge detection |
| JP2006057337A (en) * | 2004-08-20 | 2006-03-02 | Mitsui Zosen Tekko Koji Kk | Suspended scaffolding and method of constructing the same |
| CN102433835A (en) * | 2011-10-10 | 2012-05-02 | 镇江蓝舶工程科技有限公司 | Surface operation trolley for variable cross-section box beam of bridge |
| CN203530851U (en) * | 2013-10-16 | 2014-04-09 | 中国十七冶集团有限公司 | Basket device for combined basket working vehicle |
| CN107313360A (en) * | 2017-07-18 | 2017-11-03 | 南昌大学 | Overhead cable formula is without support bearing replacement operating platform |
| CN209989697U (en) * | 2019-05-21 | 2020-01-24 | 中冶建工集团有限公司 | Movable hanging basket for overhead operation at bottom of bridge steel box girder |
-
2019
- 2019-05-21 CN CN201910424221.4A patent/CN110042752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2653504Y (en) * | 2003-09-30 | 2004-11-03 | 武汉理工大学 | Suspending basket for bridge detection |
| JP2006057337A (en) * | 2004-08-20 | 2006-03-02 | Mitsui Zosen Tekko Koji Kk | Suspended scaffolding and method of constructing the same |
| CN102433835A (en) * | 2011-10-10 | 2012-05-02 | 镇江蓝舶工程科技有限公司 | Surface operation trolley for variable cross-section box beam of bridge |
| CN203530851U (en) * | 2013-10-16 | 2014-04-09 | 中国十七冶集团有限公司 | Basket device for combined basket working vehicle |
| CN107313360A (en) * | 2017-07-18 | 2017-11-03 | 南昌大学 | Overhead cable formula is without support bearing replacement operating platform |
| CN209989697U (en) * | 2019-05-21 | 2020-01-24 | 中冶建工集团有限公司 | Movable hanging basket for overhead operation at bottom of bridge steel box girder |
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| CN110042752A (en) | 2019-07-23 |
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