Against the backdrop of the outbreak of COVID-19 last year, prefabricated buildings make people witness the speed of China, with governments at all levels strengthened their determination to support the development of industry and intensively introduced various, favorable policies. In all, the fabrication industry presented a thriving and prosperous scene. With the continuous development and expansion of prefabricated buildings, its supporting machinery and equipment enjoy constant innovated progress. Through the innovation and application of digital technology in industrial flow and management flow, SANY witnesses the number of workers reduced by 50%, the working tempo shortened by 50%, and the production capacity increased by 40% of its PC Digital Factory, thus greatly improving the industrialization of PC component prefabrication and fueling the rapid development of prefabricated buildings.

The equipment adopts the methods of shoveling before and sweeping after, rotating and rolling brush, which has high cleaning efficiency and can finish cleaning at one time; the roller brush is of sectional design with both sides adjusted through side dies, accessories, and the width. With dust suppression technology, the cleaning process does not require vacuum cleaner, which greatly reduces customers’ maintenance cost of vacuum cleaner in the later period.

3. Automatic oiling and lineation

One-stop operation of lineation and oiling, without manual intervention, can simultaneously meet two oiling modes with or without edge die. The equipment supports middle station driver/local CAD driver, and accurately completes relevant operations according to actual component requirements, so that one or two people can be saved by a single line.

4. Automatic and accurate delivery of steel reinforcing bar

Equipment is linked with steel reinforcing bar production equipment, so as to realize full-automatic delivery of mesh and truss: the mesh and truss need not be accurately placed before grabbing, but multiple pieces can be grabbed at the same time, and then accurately delivered to corresponding positions in turn, and the delivery rhythm of steel bars on single-mode platform is less than or equal to 6min.

 5. Intelligent embedment, binding and detection.

After the embedded parts are positioned, the automatic quality inspection function of the position and quantity of the side mold and embedded parts is realized by the quality inspection instrument. The laser projector is driven by data, and the laser projects the position and quantity information of drawings. The deviation between visual projection and reality is with an accuracy of less than or equal to 3mm, and can automatically check and judge, and the results can be fed back online.

The concrete production and transportation system of SANY’s PC production line is connected with the customized mixing station through industrial software, which can accurately produce concrete according to the actual demand. In 2021, SANY introduced a brand-new concrete conveyor, with the maximum running/turning speed of 150m/min, the efficiency increased by 80%, the turning radius of 3m, the whole process intelligent dispatching and JIT (beat) supply.

9. Stacking maintenance

The brand-new grappling stacking equipment can quickly grasp the mold table and send it into the curing kiln efficiently and safely. The corresponding positions can be automatically opened and closed for curing, and the curing temperature and humidity are accurate and controllable with the corresponding parameters displayed online. Among them, the average working beat of standard laminated board (8 columns and 10 floors) is less than or equal to 6min, and the efficiency is increased by 40%.

With digital thinking and the development path of Industry 4.0 in mind, SANY innovatively applied disruptive technologies on the basis of traditional PC factories, reconstructed the operation mode of PC factories to provide customers with new customized, high-return, digital and fast-delivery complete production solutions for prefabricated components (PC).