Force-increasing demolding device for large-diameter vertical shaft template

Abstract

The invention relates to a force-increasing demolding device for a large-diameter vertical shaft template. A hanger suspends the template through a hanging arm; the jack seat of the wedge-shaped headjack is installed on the outer side of the hanger; a pulling mechanism is composed of a limiting guide door, a fixed inclined groove block and a inclined groove block pulling frame; the fixed inclinedgroove block is welded on the template; a inclined groove is formed on one side of the inclined groove block opposite to the inclined groove block pulling frame; the inclined groove block pulling frame is installed on the other side, opposite to one side of the template of the demolding opening where the fixed inclined groove block is located, of the template through a hinge seat; and after passing through the limiting guide door, a double-bevel wedge-shaped hole for the wedge head of the wedge-shaped head jack to move is formed with the fixed inclined groove block, the wedge-shaped head jackmoves in coordination with the double-bevel wedge-shaped hole by pushing the wedge head, so that the wedge-shaped groove formed by the cooperation of the inclined groove block pulling frame and the fixed inclined groove block is enlarged, and the fixed inclined groove block and the inclined groove block pulling frame move in opposite directions, so that the templates on both sides of the templatedemoulding opening are pulled oppositely, and the vertical pushing force is converted into horizontal pulling force, and demoulding is realized.

Description

technical field [0001] The invention relates to a demoulding device for underground construction, in particular to a force-increasing demoulding device for demoulding a pouring formwork for lining a large-diameter shaft. Background technique [0002] In the excavation of underground engineering, the enclosure structure often adopts the form of support or underground diaphragm wall. Taking the shaft as an example, in the soft soil layer, a circle of underground diaphragm wall is built around the excavation area in advance, and then the shaft is excavated, which can greatly Ensure the safety of construction and prevent soil collapse. Generally, after the construction of the underground diaphragm wall, the wall surface is extremely rough and will form an uneven wall surface. At this time, another lining wall of reinforced concrete wall structure will be poured in the diaphragm wall. When pouring the lining wall of a large-diameter and ultra-deep shaft, the formwork used will h...

AI Technical Summary

Problems solved by technology

When pouring the lining wall of a large-diameter and ultra-deep shaft, the formwork used will have higher requirements for diameter, strength, and rigidity. The area in contact with the concrete is relatively large, so the adhesive force that needs to be overcome during demoulding and the reaction force of the elastic deformation of the formwork are greatly increased, resulting in higher requirements for traditional mechanical and hydraulic demoulding equipment

In the same way, this leads to insufficient demoulding force in the self-weight demoulding method or the need to use a huge structure to provide sufficient gravity, which wastes materials and is not economically applicable

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