Reusable mould for basic foundation bolt holes of large-scale equipment

Abstract

The invention relates to a reusable mould for basic foundation bolt holes of large-scale equipment. The reusable mould for the basic foundation bolt holes of the large-scale equipment is characterized by comprising a central shaft, 2 to 4 spreading and contracting devices and 8 templates; every two templates are positioned on one side, and the 8 templates define a square; the 2 to 4 spreading and contracting devices are positioned in the square cavity defined by the 8 templates; the lower end of the central shaft passes through the 2 to 4 spreading and contracting devices, and a handle is welded at the upper end of the central shaft; each spreading and contracting device comprises an inner link rod seat, an outer link rod seat, a movable link rod, a middle connecting hinge and a corner connecting hinge; the inner end of the movable link rod is hinged with the inner link rod seat, the outer end of the movable link rod is hinged with the outer link rod seat, and the outer link rod seat is welded and fixed with the middle connecting hinge; and the two adjacent templates positioned on the same side are hinged by the middle connecting hinge, and the two templates at a corner of two adjacent edges are hinged by the corner connecting hinge. The reusable mould is simple to operate, can be quickly dismounted and can be used repeatedly.

Description

technical field [0001] The invention belongs to a reusable mold for foundation bolt holes of large-scale equipment. Background technique [0002] In the construction of large-scale equipment foundation, the anchor bolt holes of the equipment need to be reserved on the concrete foundation. The reserved method generally adopts the method of supporting steel bellows, plastic pipe or supporting wooden formwork, etc., and removes it in time after the concrete solidifies. The steel corrugated pipe adopts a tool with a slot at one end and a handle at the other end. The slot is clamped to the steel bellows, and the steel corrugated pipe is peeled off layer by layer. The removal effect is not satisfactory; the plastic pipe is baked at high temperature to make it soft, and then Pulling out as a whole, the method sometimes causes the plastic pipe to break off, which directly affects the strength of the secondary grouting of the anchor bolt holes; the wooden formwork adopts a square pyr...

AI Technical Summary

Problems solved by technology

The steel corrugated pipe adopts a tool with a slot at one end and a handle at the other end. The slot is clamped to the steel bellows, and the steel corrugated pipe is peeled off layer by layer. The removal effect is not satisfactory; the plastic pipe is baked at high temperature to make it soft, and then Pulling out as a whole, the method sometimes causes the plastic pipe to break off, which directly affects the strength of the secondary grouting of the anchor bolt holes; the wooden formwork adopts a square pyramid-shaped wooden box structure with a large upper opening and a smaller lower opening, with small cross-section and deep depth. For deep holes, there will be various difficulties such as difficulty in force and limited space when dismantling

In order to improve the pull-out bearing capacity of bolts, a structure with the lower opening slightly larger than the upper opening is often adopted. Steel bellows and plastic pipes are standard materials with equal diameters, which cannot meet the requirements of a large lower opening and a small upper opening, and cannot be dismantled.

Namely: the anchor bolt hole is characterized by a long and narrow space with a large aspect ratio, so it brings great inconvenience to the demolition, and its formwork cannot be reused during the demolition process

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