Foundation pre-burying device of large equipment and foundation installation method of large equipment

Abstract

The invention relates to a foundation pre-burying device of large equipment and a foundation installation method of the large equipment. The foundation installation method comprises the following steps that a bottom layer and middle-layer steel bars are bound to a plain concrete cushion layer, an anchoring frame is welded above the middle-layer steel bara, a positioning frame is welded above the anchoring frame, positions of foundation bolts are drawn on the top surface of the positioning frame, moreover, foundation bolt projection circles and outer sleeve projection circles are correspondingly drawn, positioning holes are cut out along the foundation bolt projection circles, the foundation bolts penetrate out of the positioning holes, and the lower ends of the foundation bolts are weldedto the anchoring frame; the outer sleeves are enabled to sleeve on the foundation bolts, and inner cavities of the outer sleeves are filled with flexible materials; and after top layer steel bars arebound, vertical molds are erected, then concrete pouring is carried out, base cushion iron is placed beside each of the foundation bolts after the concrete is solidified, after protective adhesive tape and the flexible materials are removed, the equipment is hoisted in place, equipment bolt holes are aligned with the foundation bolts to fall on the base cushion iron, and nuts are screwed on the foundation and then are tightened. According to the foundation pre-burying device of the large equipment and the foundation installation method of the large equipment, the positions of the plurality offoundation bolts can be accurate, the anchoring force is large, and one-time in-place success is achieved.

Description

Technical field [0001] The invention relates to a foot pre-buried device of equipment, in particular to a foot pre-buried device of large equipment; the invention also relates to a foot installation method of large equipment, belonging to the technical field of foot pre-buried. Background technique [0002] The equipment is usually fixed on the foundation with anchor bolts. Traditionally, anchor bolts are usually installed in the following ways. One is to drive expansion bolts as foundation bolts after the concrete foundation reaches its strength. Due to the binding force between the bolts and the foundation Small and can only be applied to small devices. [0003] The installation of large-scale equipment requires anchor bolts to be pre-embedded in the concrete foundation. There are two methods for pre-embedding foundation bolts. One is the secondary pouring method: when the foundation concrete is poured, wooden anchor bolts are placed at the locations of the anchor bolts. Form th...

AI Technical Summary

Problems solved by technology

[0004] For large heavy-duty equipment with a foundation area of ​​more than 60 square meters and a weight of more than 50 tons, the number of anchor bolts usually exceeds 90, and the volume of foundation concrete usually exceeds 200m³. The traditional method of pre-embedding anchor bolts has the following shortcomings : (1) There are many anchor bolts for large-scale equipment. If the direct pre-embedding method is adopted, the position accuracy of each bolt is difficult to grasp. As long as one bolt is not in the correct position, the equipment cannot be placed, and the pouring of the overall foundation will fail. The consequences could be disastrous

(2) The upper surface area and volume of the foundation concrete of large-scale equipment are large. During the solidification process after concrete pouring, due to the action of hydration heat, the volume will change, which will affect the embedding accuracy of the anchor bolts.

(3) Due to the shape of the equipment itself, some anchor bolts cannot be pre-embedded by secondary grouting

⑷For large heavy-duty equipment, the depth of the pre-embedded hole required by the secondary pouring method is very deep, the formwork is difficult to remove, and the removed formwork is difficult to take out

The depth of the pre-buried hole of the anchor bolt is much larger than its diameter, which makes it difficult to vibrate and compact the secondary pouring concrete all the way to the bottom of the hole

(5) The original foundation concrete has dried out, and there is a problem of bonding between the wet concrete and dry concrete poured twice. For equipment with large vibrations, such as compressors, it is easy to loosen

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