Overweight subsection lifting method
A segmented hoisting and segmented length technology, which is applied to cranes, trolley cranes, transportation and packaging, etc., can solve problems such as inefficient efficiency, and achieve the effects of speeding up loading, increasing output, and improving the working environment
Pending Publication Date: 2021-01-08
SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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Problems solved by technology
[0002] In order to speed up the construction of ships and improve the utilization rate of gantry cranes, two parallel tracks are pre-set on the ground, and each gantry crane walks on its own track; when the large total section of the group exceeds the load of a 600-ton gantry crane, That is, the weight of each segment exceeds 516 tons, of which 84 tons is the weight of three small cranes plus wire ropes; two gantry cranes can be used to jointly lift a large total section of 1,000 tons; when combined, the small crane needs to be disassembled Row, 250-ton hoisting row, 500-ton hoisting row, and sometimes it is necessary to change the connection form of the wire rope, which takes a lot of time; although it can lift the overweight section, the efficiency is not very obvious; so here we design a kind of overweight section Lifting method, in order to solve the above problems
Method used
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[0020] The present invention will be further described below in conjunction with accompanying drawing.
[0021] see Figure 1-2 , the present embodiment provides an overweight section lifting method, comprising the following steps:
[0022] A1. The two gantry cranes remove the small hanging row respectively;
[0023] A2. Install 500-ton cranes under the No. 1 hook and No. 2 hook of the two gantry cranes respectively;
[0024] A3. Install the hook in sections, that is, install the shackle under the 500-ton hoisting wire rope on the lifting lug of the large general section;
[0025] A4. Sectional hoisting and positioning;
[0026] A5. Remove the hook after the sections are in place;
[0027] A6. Dismantling the 500-ton hanging row;
[0028] A7. Install the small hanging row.
[0029] The length of a 500-ton hanging row cannot exceed 16 meters, so the section length cannot be too long.
[0030] The lifting row uses 8 lifting lugs within a range of 16 meters to lift 500 ton...
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The invention discloses an overweight subsection lifting method. The overweight subsection lifting method comprises the following steps that A1, small lifting rows are detached from two gantry cranesrespectively; A2, 500-ton hanging rows are installed below first hooks and second hooks of the two gantry cranes respectively; A3, the hooks are segmentally installed, namely a shackle below a 500-tonlifting row steel wire rope is installed on a lifting lug of a large main section; A4, hoisting and positioning are carried out segmentally; A5, the hooks are disassembled after segmenting in place;A6, the 500-ton hanging rows are dismounted; and A7, small hanging rows are installed. According to the overweight subsection lifting method, an overweight subsection can be hoisted, the dock carryingspeed can be increased, the time for disassembling and installing the lifting rows is saved by more than 4 hours compared with union hoisting, in addition, the lifting method has four lifting points,force can be dispersed, the two gantry cranes are not connected, when a large vehicle travels, a small amount of asynchronization can be allowed, and the synchronization is not limited like the unionhoisting.
Description
technical field [0001] The invention relates to the related technical field of lifting and hoisting of overweight segments, in particular to a method for lifting and hoisting of overweight segments. Background technique [0002] In order to speed up the construction of ships and improve the utilization rate of gantry cranes, two parallel rails are pre-set on the ground, and each gantry crane walks on its own track; when the large total section of the group exceeds the load of a 600-ton gantry crane, That is to say, the segment weight exceeds 516 tons, of which 84 tons is the weight of three small cranes plus wire ropes; two gantry cranes can be used to jointly lift a large total section of 1,000 tons; when combined cranes, small cranes need to be disassembled Row, 250-ton hoisting row, 500-ton hoisting row, and sometimes it is necessary to change the connection form of the wire rope, which takes a lot of time; although it can lift the overweight section, the efficiency is no...
Claims
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IPC IPC(8): B66C19/00
CPCB66C19/00B66C2700/01B66C2700/018B66C2700/017
Inventor 樊冬辉刘勇陈大伟张杰胡康毅李财玉陈坤鲁振锋
Owner SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD