Precast concrete slab connection box device capable of limiting self-locking and unlocking and reinforcement connection

Abstract

The invention discloses a precast concrete slab connection box device capable of limiting self-locking and unlocking and reinforcement connection. The precast concrete slab connection box device includes a connection box B fixedly connected to the right side of a precast slab and a connection box A fixedly connected to the left side of the precast slab, and the connection box B is movably connected with the connection box A through connecting parts. According to the precast concrete slab connection box, during lifting construction of the precast slab, under a certain alignment error, externalmechanical power equipment can be used for transferring power to the box, limiting self-locking connection of a box body on both sides of the slab section is completed, the box body is integrated, andthen the high positioning accuracy of bolt holes is guaranteed; and meanwhile, the self-locking part in the center of the box body can bear shear force of the slab dead weight and the construction load at the section, excessive supporting is not needed during later construction, connection of the box body can be unlocked when a gap of the box body is not filled with a grouting material, and the removal of the slab can be completed through reverse operation.

Description

technical field [0001] The invention belongs to the technical field of connection of prefabricated building components, and in particular relates to a prefabricated concrete slab connection box capable of position-limiting self-locking, unlocking and steel bar connection. Background technique [0002] There are still many problems in the dry connection of prefabricated concrete structure wall panels or floors. First, the strength of the connection joints is not enough to meet the requirement of being equivalent to cast-in-place. Second, when the steel bars are connected by bolts or mechanical sleeves, the positioning of the bolts or sleeves is not accurate. The third is that when the steel grouting sleeve is connected with grout, there are problems such as insufficient grouting and aging of the mortar in the sleeve, which directly affect the safety of the structure. 4. During the construction process, the components need to be assembled and supported. At present, whether the...

AI Technical Summary

Problems solved by technology

[0002] There are still many problems in the dry connection of prefabricated concrete structure wall panels or floors. First, the strength of the connection joints is not enough to meet the requirement of being equivalent to cast-in-place. Second, when the steel bars are connected by bolts or mechanical sleeves, the positioning of the bolts or sleeves is not accurate. The third is that when the steel grouting sleeve is connected with grout, there are problems such as insufficient grouting and aging of the mortar in the sleeve, which directly affect the structural safety

4. During the construction process, the components need to be assembled and supported. At present, whether the installation is in place mainly depends on the intuitive judgment of the on-site technicians. Human factors are greatly affected, and precise positioning cannot be achieved, and the degree of automation is low.

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