The worm gear reducer is a reduction transmission device widely used in various mechanical equipment. Its main function is to transmit high-speed rotating power to low-speed rotating loads.
Worm gear reducer is mainly composed of worm, worm gear, shell, bearing and other components. The worm is a spiral metal rod with threads on it; the worm gear is a gear with internal helical teeth that mesh with the worm. When the worm rotates, due to the action of its threads, the worm gear will move axially, thereby transmitting power.
The working principle of the worm gear reducer can be divided into the following steps:
1. Power input: The power input end of the worm gear reducer is usually connected to a high-speed rotating motor or engine, such as an electric motor, a hydraulic motor, etc. The high-speed rotational power generated by these devices is transmitted to the worm through a coupling or other transmission device.
2. Power transmission: When the worm rotates, the threads on it mesh with the internal helical teeth on the worm gear. Due to the action of the thread, the worm gear will move axially to achieve power transmission. In this process, the relative speed between the worm and the worm gear will decrease, thereby achieving the purpose of deceleration.
3. Power output: The power output end of the worm gear reducer is usually connected to a load that requires low-speed rotation, such as a mixer, conveyor belt, etc. The decelerated power is transmitted to the load through a coupling or other transmission device to drive it to work.
4. Self-locking function: The worm gear reducer has a certain self-locking function, that is, when the worm stops rotating, the worm gear can still remain stationary. This is because the internal helical teeth on the worm gear mesh with the threads on the worm, forming a self-locking torque that prevents the worm gear from rotating freely. This self-locking feature has important safety implications in certain applications, such as cranes, lifts, etc.
In short, the worm gear reducer achieves power transmission and deceleration through the mutual meshing between the worm and the worm gear. Its simple structure, high transmission efficiency, and good self-locking performance make it widely used in various mechanical equipment.