Tractor equipped with a fifth wheel
AssigneeMarita Jarvinen Oy
InventorPekka Jarvinen
Life of this patent
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Abstract
The present invention relates to a tractor for transferring a variety of trailers and transfer devices (12) equipped with a kingpin (13), which tractor is equipped with a vertically adjustable 5th wheel (4). The 5th wheel (4) comprises gripping members (14, 15) and power mechanisms (16) by means of which the transfer device (12) is by the kingpin (13) with a convenient force pulled into contact with the 5th wheel 4 thus making an inner force balance of the joint 4-12 possible.
Claims15
A tractor equipped with a 5th wheel for coupling semitrailers and devices to be transferred equipped with a kingpin coupling, comprising:
- a tractor equipped with a power source with controls,
- a vertically adjustable 5th wheel arranged in said tractor, said 5th wheel comprising gripping means for gripping the kingpin of the device being coupled,
- movement means for moving said gripping means in a horizontal direction,
- power mechanisms for moving said gripping means in a vertical direction to thereby press the kingpin of the device being coupled into contact with said 5th wheel.
A tractor equipped with a 5th wheel for coupling and transferring semitrailers and devices equipped with kingpin couplings, comprising:
- a vertically adjustable 5th wheel coupled to an axle of the tractor through a first adjustable cylinder,
- gripping means for gripping the kingpin coupling of the device being coupled when the kingpin is passed through an aperture in said 5th wheel,
- movement means for moving said gripping means in a horizontal direction, and
- power mechanisms connected to said gripping means for moving said gripping means in a vertical direction to thereby direct said gripping means into contact with the 5th wheel.
Dependencies are inferred from the claim text.