The invention relates to a control device, belongs to the technical field of slab joint treatment, and particularly relates to a control device for a slab joint at a slab strip of a laminated slab, which comprises a prefabricated laminated slab, reinforcing steel bars are arranged on the prefabricated laminated slab, and a concrete slab is poured on the prefabricated laminated slab; according to the sealing device, primary sealing is formed through precise embedding of the sealing
gasket and the
batten groove, the rotating sleeve driven by the spring pushes the sliding block to abut against the periphery of the aluminum
alloy formwork to achieve secondary dynamic sealing, three-level flexible sealing is formed in cooperation with the
sponge strip between the prefabricated laminated slab and the aluminum
alloy formwork, and the
slurry leakage rate of slab joints is greatly reduced through triple protection; the problem of pouring
slurry leakage is effectively solved, through the linkage design of a sliding rod and a rotating sleeve, a sliding block is automatically driven to slide along a limiting groove when a butterfly buckle is screwed,
extrusion force is evenly transmitted to the periphery of an aluminum
alloy formwork, a spring provides elastic compensation, a laminated slab is prevented from being damaged due to over-tightening, the
veneer seam installation time is greatly shortened, and the construction efficiency is improved. And during disassembly, only the butterfly buckles need to be loosened, and rapid turnover use is achieved.