Setting method and structure of embedded bolt of strongly-vibrating large electromechanical equipment
A technology for electromechanical equipment and pre-embedded bolts, which is applied in infrastructure engineering, construction, etc., can solve the problems of many processes, complicated construction and disadvantages, and achieve the effect of saving investment, simple structure and easy construction.
Active Publication Date: 2012-10-24
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology
The traditional bolt embedding is to reserve holes for the second-stage concrete pouring in the concrete structure of the equipment foundation. The concrete structure of the equipment foundation is weakened by the holes reserved for the second-stage concrete pouring, so it is necessary to increase the thickness of the concrete structure of the machine pier, causing the plant size The increase of the construction cost and the substantial increase of the project investment, and the method of laying the bolts in the way of reserving the second-stage concrete, the construction is complicated and there are many procedures, which is not conducive to speeding up the construction progress
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[0017] Example. A method for setting embedded bolts of large electromechanical equipment with strong vibration, such as figure 1 shown. The method is to pre-cast a cavity body with movable bolts in the equipment foundation; when installing the equipment, first connect the movable bolts to the fixed bottom plate of the equipment, and then pressurize the cavity body through the grouting pipe arranged at the lower part of the cavity body Grouting, complete the pouring of movable bolts. When grouting under pressure in the cavity, the air in the cavity is discharged through the grout return pipe on the upper part of the cavity, and when the grout return pipe continuously discharges cement mortar, the pouring of the movable bolt is completed. In the method for setting pre-embedded bolts of large-scale electromechanical equipment with strong vibration, the cement strength grade of the cement mortar is greater than 32.5, the water-cement ratio is 0.5-0.6, the sand content of the ...
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Abstract
The invention discloses a setting method and a structure of embedded bolts of strongly-vibrating large electromechanical equipment. The method comprises the steps of: pre-pouring a cavity body with movable bolts in an equipment foundation; and during equipment installation, firstly connecting the movable bolts with the fixed bottom plate of the equipment, and then filling cement grout into the cavity body through pressure grouting by using a grout pipe at the lower part of the cavity body to complete the pouring of the movable bolts. The cavity body is embedded in the equipment foundation at first by arranging the movable bolts in the cavity body, the equipment is connected with the movable bolts through nuts, the cement grout is filled into the cavity body through pressure grouting and the bolts are fixedly arranged through the cement grout. The setting method and the structure of the embedded bolts of the strongly-vibrating large electromechanical equipment have the advantages that the structure is simple, the construction is easy to conduct, the investment is saved, and not only can the embedded bolts be accurately positioned, but also the embedded bolts can be fixedly arranged by using the cement grout after the installation of the embedded bolts is completed.
Description
technical field [0001] The invention relates to a setting method and structure of pre-embedded bolts of large-scale electromechanical equipment with strong vibration, and belongs to the technical field of pre-embedded bolts of large-scale electromechanical equipment. Background technique [0002] During the installation of generator stator, lower frame and other equipment in the powerhouse of a hydropower station, it is necessary to accurately pre-embed bolts when the equipment foundation concrete is poured to fix the equipment on the equipment foundation concrete structure, and the pre-embedded bolts will be damaged by the water turbine during operation. The strong vibration of the machine operation will cause the bolts to loosen, which will cause the failure or accident of the electromechanical equipment. The traditional bolt embedding is to reserve holes for the second-stage concrete pouring in the concrete structure of the equipment foundation. The concrete structure of ...
Claims
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Inventor 慕洪友陈本龙湛正刚宋静杨曼吴小波王正清王金生
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD