Liebherr R964C

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Liebherr R964C
Liebherr R964C

The Liebherr excavator originally was used to carry onto the existing Nooteboom jeep dolly combo with the Scania T143. But a so called ‘Interdolly’ also fits. That is a pendulum axle module that can be put between the gooseneck and trailer’s loading bed.

First I built another gooseneck (already shown on the pictures with the Doosan wheeled loader). That neck has the same connection as the bigger one with the 2-axle jeep dolly that I had already. After finishing the gooseneck I built the 3-axle Interdolly. That one also has the same connection making it a versatile trailer. The dolly consist of one central beam section with a couple of traverse beams. The six individual wheel sections are put below the deck. The pendulum axles are connected with each other by tie rods and they all have another swing ratio. It’s possible to make a full turn with the entire combo.

Especially for the Interdolly I created the Scania R143. British heavy hauler H.C. Wilson has such a trailer in operation.

With this model I tried to simulate how such a heavy machine is loaded onto the trailer. In this case the truck should arrive with the dolly disconnected loaded onto the trailer’s bed to minimize the length when empty. But in real I hardly see this (it’s seems to be easier to keep the entire trailer in one piece). So it’s meant to disconnect the gooseneck from the trailer bed, connect it to the Interdolly and move it from the trailer bed. Here the trailer bed is a so named “spine floor”, a central beam with extenders on each side. Due to the Liebherr’s height and wideness only the central beam is used. Now the excavator moves over the trailer’s floor onto the ramps. Heavy wooden blocks are put underneath the undercarriage on the front and rear. On the front side the excavator jacks itself to create some space between the undercarriage and the floor to put the wooden blocks in between. Then the upperstructure swings backwards again. Now the truck will connect the Interdolly to the other part of the trailer and lift the tracks from the ground. The tracks have to be tightened as well; a metal stick in one of the sprocket wheels on each side is sufficient. When the load is secured it’s ready to go, of course supported by one of two pilots cars.

Total length: 175 cm

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Taken on: March 28, 2024
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