The Gocargo semi trailer system

Further to the general important demands mentioned above, the system for the semi trailer has the following specific points to be considered:
  • low weight for the complete system in relation to the maximum payload
  • little building height for the system in relation to the useable loading height
  • compact driving units because of the useful loading length
  • weather, water and pickle resistant system, materials and controls
The endless moving floor as used with the stationary systems has no advantage for the systems built into the semi trailers. Semi trailers are loaded and unloaded by turns.

The Gocargo loading- unloading system for semi trailer use is assembled with the following parts:
 
Winch
The winch developed by KWB itself is mounted to the front (outer) side of the bulkhead. This winch is built as compact and with as low maintenance as possible. This robust winch unit is driven hydraulically or electrically; a combination of both is also possible. The winch is built completely within the legal limited bulkhead radius of 2040 mm. The winch pulls the conveyor belt, covering the standard floor by means of a steel cable. When the belt gets pulled forward the semi trailer can be loaded from the rear.
Conveyor belt
The conveyor belt developed especially for this purpose which is used by KWB is only 4 mm thick. The conveyor belt rests on the standard floor of the semi trailer, therefore losing only four mm of useable loading height compared to a standard trailer.  The maximum concentrated force is very high because the standard floor is used to support the belt. The Gocargo system mounted into the semi trailer can be used by a forklift as a normal trailer floor.
292
On the rear side of the trailer a self-developed drive unit is mounted, called the 292. The conveyor belt is guided over the guiding roll in the back of the trailer and then wounded up on to the winding roll. The drive unit is integrated into this roll. The drive unit can be powered hydraulically, electrically or a combination of both. The drive is virtually maintenance free by using a minimum of moving parts and connection to a central grasing system.
Controls
Of course the controls for the Gocargo systems are different for the hydraulic and electric version. Both version are completely developed and built by KWB itself to meet the customer's specification. There is always supply in knowledge and spare parts to repair any malfunction because KWB develops and builds the controls self. The basis is formed by a control that only has functions for loading and unloading. Expansions to this control can be with photo cells for automated loading and unloading, sensors to automatically detect cargo, speed measuring and control, etc. Advanced options are for example storing of failure reports, storing an electronic freight bill or the need to log in with username and password before the system functions.
Positioning
Gocargo steel wheels are used to position the trailer as accurate as possible in front of the stationary dock. These wheels are mounted rigid to the trailer chassis. A hot dip galvanized frame is mounted rigid to the floor in front of the stationary Gocargo. While driving towards the dock the steel wheels are guided to the right height, width and distance by the frame. During positioning the trailer gets raised approximately 1,5 cm from its air suspension to prevent any kind of reaction of the suspension. By this methods of positioning the trailers are positioned very precise, up to a few millimetres.

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