CN112623921A

CN112623921A - Light lifting appliance for hoisting lattice beam cable of arch bridge

Info

Publication number: CN112623921A
Application number: CN202011492317.3A
Authority: CN
Inventors: 陈友生; 鲁翼; 张维福; 侯朝银; 魏昌伟; 李超然; 周咏凯; 陈星州; 曾一峰; 王小祎; 胡光智; 周长宪; 肖木; 刘洋; 刘杰; 程子懿
Original assignee: Sichuan Road and Bridge (Group) Co Ltd; SICHUAN ROAD AND BRIDGE HUADONG CONSTRUCTION CO Ltd
Current assignee: Sichuan Road and Bridge (Group) Co Ltd; SICHUAN ROAD AND BRIDGE HUADONG CONSTRUCTION CO Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-04-09

Abstract

The invention discloses a light hoisting device for cable hoisting of lattice beams of arch bridges; large-span steel structure arch bridges often adopt lattice beams as the main structure of the carriageway system; for arch bridges hoisted by cable cranes, when the transverse width of the lattice beams is higher than that of the lattice beams When the lateral width of the arch rib is small, and there is not enough space to set the lifting lugs on both sides of the lattice beam, it is necessary to use a special hoisting tool for hoisting. The function of this type of spreader is to "widen" the narrow beam to provide a reliable lifting point for the crane. In addition to satisfying this function, the light lattice beam spreader proposed in this patent also has the advantages of light weight, simple operation and low construction cost.

Description

Light lifting appliance for hoisting lattice beam cable of arch bridge

Technical Field

The invention relates to the technical field related to construction equipment, in particular to a light sling for hoisting an arch bridge lattice beam cable.

Background

The large-span steel structure arch bridge usually adopts lattice beams as a main structure of a traffic lane system. When the transverse width of the lattice beam is smaller than that of the arch rib and the lifting lugs are not arranged in enough space on the two sides of the lattice beam, the arch bridge is hoisted by adopting the cable crane, and a specially-made hoist is needed to hoist. The function of such spreaders is to "widen" the narrow beam, providing a reliable lifting point for the crane. At present, most of the engineering practices use a shoulder pole beam with a width wider than the transverse width of a lattice beam and an arch rib as a lifting appliance, when the lattice beam is lifted, the lattice beam is lifted on the shoulder pole beam, and the lifting hooks of a cable crane lift the two ends of the shoulder pole beam so as to realize the lifting of the lattice beam. In addition, there are some lifting devices, which are connected to the top plate, the bottom plate, etc. of the lattice beam to realize the transverse "widening" of the lattice beam. The lifting appliances have the defects of great weight, inconvenient operation, high construction cost and the like.

Disclosure of Invention

Therefore, in order to solve the above-mentioned disadvantages, the present invention provides a light sling for hoisting an arch bridge lattice beam cable; the large-span steel structure arch bridge usually adopts lattice beams as a main structure of a traffic lane system; when the transverse width of the lattice beam is smaller than that of the arch rib and the lifting lugs are not arranged in enough space on the two sides of the lattice beam, the arch bridge is hoisted by adopting the cable crane, and a specially-made hoist is needed to hoist. The function of such spreaders is to "widen" the narrow beam, providing a reliable lifting point for the crane. The light lattice beam lifting appliance provided by the patent has the advantages of light dead weight, simplicity and convenience in operation, low construction cost and the like besides meeting the function.

The invention is realized in this way, construct a light sling for hoisting the lattice beam cable of the arch bridge, which is characterized in that;

the light lifting appliance is provided with a beam body, lifting lugs and splicing plates; the lifting lug is welded at the end part of the beam body; the splice plates are divided into a web plate splice plate, an upper flange splice plate and a lower flange splice plate; drilling bolt holes at corresponding positions of the web splicing plate, the upper flange splicing plate and the lower flange splicing plate; the web splicing plates, the upper flange splicing plates and the lower flange splicing plates are connected with the grid beam through bolts.

The light sling for hoisting the lattice beam cable of the arch bridge is characterized in that the light sling comprises a hanger body and a hanger rod; the beam body is an I-shaped steel beam formed by welding steel plates, and the steel beam can be designed into a variable cross-section steel beam according to the stress condition.

The light sling for hoisting the lattice beam cable of the arch bridge is characterized in that the light sling comprises a hanger body and a hanger rod; before hoisting, the grid beam hanger is connected with a hoisting point fork lug of a cable crane through a pin shaft and stays above a hoisting position, after the grid beam is transported to the hoisting position, the grid beam is butted with a web plate, a top plate and a bottom plate of the hanger, splice plates are installed, bolts (common bolts) are screwed, the connection between the hanger and the grid beam is completed, the transverse widening of the grid beam is realized, and the cable crane can start hoisting; after the hoisting of each section of lattice beam is finished, the bolt connection is removed, and the hoisting of the next section of lattice beam can be circularly carried out.

The invention has the following advantages: the invention provides a light lifting appliance for lifting an arch bridge lattice beam cable through improvement, which is divided into three parts, namely a beam body, lifting lugs and splicing plates; the lifting appliance described in the patent has the advantages of light weight, simplicity and convenience in operation and low construction cost. When the transverse width of the lattice beam is smaller than that of the arch rib and the lifting lugs are not arranged in enough space on the two sides of the lattice beam, the arch bridge is hoisted by adopting the cable crane, and a specially-made hoist is needed to hoist. The function of such spreaders is to "widen" the narrow beam, providing a reliable lifting point for the crane. The light lattice beam lifting appliance provided by the patent has the advantages of light dead weight, simplicity and convenience in operation, low construction cost and the like besides meeting the function.

Drawings

FIG. 1 is a schematic view of the lifting of a lattice beam according to the present invention;

FIG. 2 is a detailed view of the connection between the spreader and the lattice beam;

FIG. 3 is a schematic view of the spreader assembly;

FIG. 4 is a schematic view of a web splice plate;

FIG. 5 is a schematic view of the top and bottom flange splice plates.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an arch bridge lattice beam cable hoisting light-duty lifting appliance through improvement, as shown in figures 1-5, which can be implemented as follows;

the lifting appliance is divided into three parts, namely a beam body 1, lifting lugs 2 and splicing plates. The beam body is an I-shaped steel beam formed by welding steel plates, and the steel beam can be designed into a variable cross-section steel beam according to the stress condition; the lifting lug is welded at the end part of the beam body; the splice plates are divided into a web splice plate 3, an upper flange splice plate 4 and a lower flange splice plate 5. According to the stress calculation, bolt holes 7 are drilled in the web plate, the upper flange plate and the lower flange plate of the connecting part of the steel beam and the lattice beam of the lifting appliance, and bolt holes are drilled in the corresponding positions of the splicing plates. All drilling work can be done in the gridwork factory.

Before hoisting, the grid beam hanger is connected with a hoisting point fork lug 6 of a cable crane through a pin shaft and stays above a hoisting position, after the grid beam is transported to the hoisting position, the grid beam is butted with a web plate, a top plate and a bottom plate of the hanger, splicing plates are installed, bolts (common bolts) are screwed, the connection between the hanger and the grid beam is completed, the transverse widening of the grid beam is realized, and the cable crane can start hoisting. After the hoisting of each section of lattice beam is finished, the bolt connection is removed, and the hoisting of the next section of lattice beam can be circularly carried out.

This patent has following advantage and beneficial effect: the lifting appliance described in the patent has the advantages of light weight, simplicity and convenience in operation and low construction cost. When the transverse width of the lattice beam is smaller than that of the arch rib and the lifting lugs are not arranged in enough space on the two sides of the lattice beam, the arch bridge is hoisted by adopting the cable crane, and a specially-made hoist is needed to hoist. The function of such spreaders is to "widen" the narrow beam, providing a reliable lifting point for the crane. The light lattice beam lifting appliance provided by the patent has the advantages of light dead weight, simplicity and convenience in operation, low construction cost and the like besides meeting the function.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An arch bridge lattice beam cable hoisting light sling, characterized in that;

The light-duty spreader has a beam body (1), a lifting lug (2), and a splicing plate;

The lifting lug (2) is welded on the end of the beam body (1);

The splicing plate is divided into a web splicing plate (3), an upper flange splicing plate (4) and a lower flange splicing plate (5). Bolt holes (7) are drilled at the corresponding positions of the flange splicing plate (5); the beam body (1) is realized by bolts from the web splicing plate (3), the upper flange splicing plate (4), and the lower flange splicing plate (5). Connections to lattice beams.

2 . The light hoisting device for cable hoisting of lattice beams of an arch bridge according to claim 1 , wherein the beam body ( 1 ) is an I-shaped steel beam welded with steel plates, and the steel beam can be designed according to the stress conditions. 3 . A variable-section steel beam.

3. An arch bridge lattice beam cable hoisting light hoisting device according to claim 1, characterized in that before hoisting, the lattice girder hoisting device and the lifting point fork lug (6) of the cable hoist are connected by pins, and stay at Above the lifting position, after the lattice beam is transported to the lifting position, connect the lattice beam to the web, top and bottom plates of the spreader, install the splicing plate, tighten the bolts (ordinary bolts), complete the connection between the spreader and the lattice beam, and realize the grid When the beam is "widened" horizontally, the cable crane can start lifting; after each section of lattice beam is hoisted, the bolt connection can be released, and the next section of lattice beam can be hoisted circularly.