Reasonable material selection and quenching treatment of alloy steel make the guide wheel and drive gear teeth have good wear resistance, thereby extending their service life. Spring tensioning mechanism with color screw adjustment, high reliability. It is a multi section assembled truss structure, and the length can be changed after adjusting the number of sections. Its lower end is hinged at the front of the turntable, and the top is suspended and supported by a variable amplitude steel wire rope pulley group, which can change its inclination angle.

For the rotary bearing installed on the chassis, all the weight on the turntable can be transmitted to the chassis, which is equipped with power devices, transmission systems, winches, control mechanisms, balance weights, and machine sheds. The power device can rotate the turntable 360 ° through a rotary mechanism. The slewing bearing consists of upper and lower rolling discs and rolling elements between them, which can transfer all the weight on the turntable to the chassis and ensure the rotation of the turntable. So as to ensure the normal operation and operation of the equipment