The reason why a screw jack can easily lift several tons of heavy objects is entirely due to its internal spiral transmission system, which is like a precision clock. This mechanical device consists of ratchet, bevel gear, screw, lifting sleeve and other components. Each component accurately exerts force in its own position, transmitting the force like a relay baton, and pushing the lifting sleeve to complete the mission of lifting or lowering. It can be said that spiral transmission is the core of a jack that can carry heavy loads.

In the world of mechanical transmission in the industrial field, the spiral transmission method is as diverse as stars, and its core essence is the relative motion between the screw and the nut. The transmission method used by the screw jack is unique, with the nut firmly fixed like a general sitting in a military tent; The screw rotates while moving back and forth along the axial direction. Under the solid support of the nut, a small torque can unleash astonishing axial thrust. Although its operation is intermittent, its excellent self-locking performance is unparalleled. In the rhythm of the operator pressing the handle again and again, the screw seems to be endowed with magical power, gradually climbing up or slowly descending.

This spiral transmission method has a unique charm. It has a simple and exquisite structure, compact and orderly components, uniform and smooth rotation, and every action is precise and smooth. Its built-in self-locking function is like adding a safety lock to the jack, which not only meets the needs of the screw jack, but also brings convenience to the operator. During the process of lifting heavy objects, with the help of this characteristic, operators do not need to constantly tighten their nerves, can take a short break, and easily cope with heavy work.