Multifunctional large-tonnage beam erecting crane and beam erecting method
A crane and large tonnage technology, applied in cranes, erecting/assembling bridges, bridges, etc., can solve the problems of not meeting schedule requirements, high cost, weak structure, etc., to reduce equipment and civil construction investment, reduce production costs, and improve The effect of construction efficiency
Active Publication Date: 2015-04-08
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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Problems solved by technology
The upper steel truss girder of this combined structure is generally relatively weak in structure and cannot bear the construction load of the girder crane operating on the truss girder
This requires that the girder crane can only stand on the lower steel box girder, and the steel box girder can be hoisted by using the bridge deck crane and the mast crane, but the upper steel truss beam cannot be installed; if the full-slewing crane is used, if The installation of the upper steel truss girder members can be realized without the jib interfering with the stay cables, but the lifting capacity cannot meet the lifting requirements of the whole section steel box girder on the lower level. Even if a full-slewing crane that meets the lifting capacity requirements is developed, the cost It will be very high, and the work efficiency will not meet the progress requirements of steel truss girder hoisting
Method used
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[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0033] see figure 1 As shown, a multifunctional large-tonnage girder crane includes a luffing crane 1, a full-slewing crane 2, and a chassis frame 3; the chassis frame 3 is a trapezoidal steel structure support, and an upper working platform is arranged in turn , the middle-level operation platform and the lower-level operation platform; the full-slewing crane 2 is arranged on the upper-level operation platform, and it includes a turntable 21 installed on the upper-level operation platform through a slewing bearing, and the slewing bearing at the bottom of the turntable 21 can realize full-slewing crane through a driving motor. 360° rotation of machine 2. The turntable 21 is provided with a boom 24, an A-frame 23, and a hoist unit 22, wherein the boom 24 is hinged on the turntable 21, and the hanging end of the boom 24 is provided with a hook...
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The invention discloses a multifunctional large-tonnage beam erecting crane and a beam erecting method, relating to the technical field of bridge engineering equipment. The beam erecting method disclosed by the invention comprises the following steps of: S1, assembling the multifunctional large-tonnage beam erecting crane at the pre-installation position of a bridge; S2, erecting a steel truss beam rod part by utilizing a full-rotating crane to form an inter-section steel truss beam; and erecting a steel box beam by utilizing a variable-amplitude crane to form an inter-section steel box beam, wherein the steel truss beam rod part and the steel box beam are erected according to working conditions simultaneously or sequentially; and S3, continuously erecting a next inter-section steel box beam and a next steel truss beam according to the step S2 till completing construction. According to the invention, the beam lifting operation of large-tonnage steel box beams of long-span railway bridges is realized; high-efficiency assembly of steel truss beam rod parts is realized; the project progress is satisfied; the construction efficiency is increased; and the production cost is reduced.
Description
technical field [0001] The invention relates to the technical field of bridge engineering equipment, in particular to a multifunctional large-tonnage girder erecting crane and a beam erecting method. Background technique [0002] In the traditional erection construction of ordinary steel girders of long-span railway cable-stayed bridges, steel truss girder assembly generally includes two methods: bar assembly and whole-segment assembly, and steel box girder assembly is generally full-segment assembly. The cranes used in traditional steel beam assembly construction mainly have the following three modes: [0003] 1. Semi-rotary mast crane. A semi-rotary mast crane is installed on the bridge, and the crane takes the beam under the bridge. The steel girder segments are transported directly under the crane at the bottom of the bridge. The mast crane lifts the steel beam segment to the steel beam assembly station. The advantage of this method is that the cost of the crane is l...
Claims
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IPC IPC(8): B66C23/82B66C23/62
CPCB66C23/02B66C23/08B66C23/26B66C23/62E01D21/00
Inventor 潘东发庞凤起毛伟琦涂满明马涛刘翠云郑席晖林明伟许颖强朱佳绪陈冬王晶晶
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD