The production of precast concrete hollow core slabs involves a variety of specialized construction machinery. The following is a summary and analysis of the core equipment（precast concrete hollow core slab machine）and process flow:
1. Core production equipment-precast concrete hollow core slab machine
Hollow core slab forming machine
The precast concrete hollow core slab machine is developed and improved on the basis of traditional manual and ground anchor pull die mold equipment. The whole hollow core slab machine is composed of a driving system(winch)and a hollow core slab mold frame. The inner slab mold is equipped with a 6-7 pieces vibration tubes with vibatring cores that connect the vibrating motors. After pouring concrete into the mold, the motor drives the vibrating cores shaft to rotate at high speed and generate a strong and uniform internal eccentric vibration force. After the hollow core slabs formed, the winch will pull the mold out. And then, it starts the next production
Prestressed tensioning equipment
Prestressed steel strands or wires used for tensioning inside hollow core slabs to enhance structural bearing capacity.
2. Auxiliary production system
Concrete mixing and distribution system
Forced mixers ensure uniform mixing of raw materials (cement, aggregates, volcanic ash, etc.);
Automatic distributors accurately pour into molds to reduce manual intervention.
Rebar processing equipment
Including straightening machines, hoop bending machines, etc., used to process steel bar skeletons.
Cutting and surface treatment equipment
Diamond saw blades or concrete slab cutters for precise cutting;
3. Typical production line configuration example
Take the JQT series production line as an example:
Process flow:
Raw material ratio → mixing → laying → prestressed tensioning → high-frequency vibration molding → maintenance → cutting → quality inspection.
Advantages:
Production efficiency is 3-5 times that of traditional processes, and labor costs are reduced by 50%;
Supports the production of large-scale hollow slabs with a span of 4.2-18 meters, suitable for scenes such as factories and residences.
4. Industry development trends
Greening: Use industrial waste such as volcanic ash to replace part of cement to reduce carbon emissions;
Intelligent: Integrated Internet of Things (IoT) to achieve remote monitoring and fault warning of equipment;
Modular design: The equipment can be quickly disassembled and transported to meet the needs of temporary construction sites.
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