vibrator
vibrador
vibreur
振动器 /zhèndòng qì/
1
Example
[This machine is] a high frequency olive vibrator, hooking to the front of the tractor. [It has a] hydraulic system with piston pumps of one mass, driven by electric control.
Additional information
it shows 95% shaking effectiveness, which however decreases along with tree size because horizontal and pendular branches are worse at transmitting vibrations than upright ones. There exist models where the machine has a big umbrella below it in order to gather in the falling fruits, the reason why it is also called a "harvester".
2
The mechanical vibrator consists of 3 different parts as: Pole with the handle, vibration head with the vibration mechanism fixed inside, the stick to which is carried out the final vibration.