Suction based sampling of biomass
The suction unit is swiveling and suspended to a crane arm, where the vacuum is created from compressed air in the suction pipe.
The collected material is transported from the top of the unit through a hose to the canister, located close to the crane column.
The swiveling crane arm is suspended to the upper part of the vertical steel column, which is rotated by means of a motorized gear unit drive, so the operator can choose the collection point freely.
All movements are activated from a hydraulic power unit, located close to the base of the column.
The operation of the system takes place on a control panel located at the foot of the column.
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Sampling using the auger-principle
The sample is transported up through the screw-pipe, as the ”drill” works itself down through the material. The top of the screw-pipe has some openings, from where the material falls back into the pile of the truck.
Here the operator can choose where the samples are to be taken and at what depth. . When the sampler has drilled down to the desired depth, the collected material drops into a sample pan at the foot of the column, where the control panel also is located.
The upper crane arm is attached to the lower crane arm through bearings, and a hydraulic cylinder provides the required free movement. The lower crane arm is hung in a heavy-duty ball bearing, located at the top of a strong steel column. A hydraulic cylinder between the column and the lower crane arm provides the necessary arm movement.
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Sampling collection with a grab
If the material that shall be collected contains particles that in size that are unsuitable for collection through Suction or by means of Auger principle – Grab sampling can be used.
A strong steel column, embedded to ground through an anchored foot plate is equipped with a pair of horizontal crane beams at the top. The beams are supported through diagonally on-welded cross members.
The steel arrangement allows horizontally movement of a cross traversing trolley, equipped with an Open Top Grab. Vertical movement of the grab is done by means of a hydraulic station, located at the base of the column. The open top, allows the grab to force itself (penetrate) into a desired material depth, from where the sample shall be collected.
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Sampling for long shredded material
The system is designed as a fixed portal unit with tracks on which a cross moving cart is collecting a sample of material from the truck and delivers it into a container close to the operator. The operator is placed on a small landing, from where he can overlook and operate the system on the control panel.
The Sample Collector is in principle located at the end of a big hydraulic cylinder that provides vertical movement in both directions.
A collection area is created by the distance between two cylindrical cones and an outer (displacable) pipe, that open/close due to material friction when the Sample Collector is inserted and retracted. The construction allows longer shreds to be collected.
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