Automatic Tensioning Machine For Multi-Specification Prestressed Pipe Piles

Automatic stretching machine for multi-specification prestressed tubular piles, includes tubular pile mold assembly, stretching device, lifting platform, horizontal displacement device for the lifting platform, pipe diameter detection device, and a connection locking device for docking the stretching device with the plate head pull rod. The stretching device adjusts its height driven by the lifting platform, which adjusts its distance from the tubular pile mold assembly through the horizontal displacement device. The connection locking device includes a tapered connector fixedly connected to the plate head pull rod and a locking sleeve device fixedly connected to the stretching rod of the stretching device. A tension step is formed by the conical necking inside the tapered connector. The locking sleeve device comprises a locking sleeve and multiple locking pins, which can be conveniently and precisely used to dock the stretching device with the tubular pile film assembly by matching with the tension step. The stretching machine can adapt to various specifications of tubular pile stretching, achieving complete automation, liberating human labor, and greatly improving production efficiency. Automatic stretching machine for multi-specification prestressed tubular piles, includes 1. Tubular pile mold assembly 2. Pipe diameter detection device 3. Stretching device 4. Lock nut device 5. Locking sleeve device 6. Guide rod sensor assembly 7. Lifting platform 8. Horizontal displacement device for lifting platform Pre-tensioning prestressed concrete tubular pile prefabricated concrete foundation pile, which can be interpreted as: 1. "Pre-tensioning prestressed" means stretching the prestressed tendons before pouring concrete, and temporarily anchoring the stretched tendons on the bench or steel mold. Then concrete is poured, and when the concrete curing reaches no less than 75% of the concrete design strength, ensuring sufficient bonding between the prestressed tendons and the concrete, the prestressed tendons are relaxed. This technique applies prestress to the concrete through the bond between the concrete and prestressed tendons. 2. "Concrete tubular pile" refers to a tube-shaped pile that uses concrete as its structural strength.