What’s a plate vibrator?

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A plate vibrator is a machine designed to compact soil, asphalt and similar materials. It is typically used when laying the groundwork to complete overlay projects. A plate vibrator can be used to lay foundations for roads, sidewalks, and any other area that needs to be covered with material. The plate vibrator is also used when trying to impact levees for canal use. Smaller versions of the unit can be used to impact stone or brick inlay for walkways.

The plate vibrator consists of a bottom plate mounted on a vibrating machine. This makes the plate vibrator look like a bottomless lawn mower. A plate vibrator is powered by a gas powered unit that plugs into the top of the bottom plate.
The plate vibrator has at least two counter-rotating eccentric masses, which are mounted on a shaft. The phase positions of the weights can be adjusted relative to each other by the use of an adjustment mechanism. The element and power unit are placed on top of the plate vibrator, which moves by redistributing the weight of the entire machine. This causes the bottom plate to oscillate, minimizing the height of the plate vibrator and maximizing the translational motion as the machine moves forward or reverse. This design makes the plate vibrator easier to use and easier to transport.

To change the phase position of the plate vibrator eccentrics, one or more eccentrics are mounted to allow rotation relative to the shaft. The direction of rotation of the weights is achieved with the aid of a gear wheel and a chain drive. The other weights are rigidly mounted on the shaft just opposite the drive. This creates a vibrating force.

The vibratory plate design makes it easy to change direction when needed. Additionally, the user can manipulate the adjustment controls on the platen to give it a forward or reverse vibratory compaction motion over the surface to be compacted.

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