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US 8,985,702 B2Granted
Automotive road milling machine
AssigneeWirtgen GmbH
InventorsPeter Busley, Thomas Lehnert, Herbert Ley, Cyrus Barimani, Günter Hähn
Life of this patent
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AssigneeWirtgen GmbH
InventorsPeter Busley, Thomas Lehnert, Herbert Ley, Cyrus Barimani, Günter Hähn
Estimating the term…
In an automotive road milling machine (1) for milling ground surfaces (3), with a machine frame (2), a milling drum (4) with a quick-change system arranged at the machine frame (2) in a drum housing (11), a driving device (6) for driving the milling drum (4), a reduction gear (8) arranged between the driving device (6) and the milling drum (4), where the milling drum (4) is arranged between drum housing walls (12,13) of the drum housing (11) running orthogonally to the axis of rotation of the milling drum (4), where the quick-change system is provided with a basic drum body (14) and at least one milling tube element (10) capable of being pushed onto the basic drum body (14), where the drum housing wall (13) opposite the drive-side drum housing wall (12) is easily removable for the quick exchange of alternatively usable milling tube elements (10), it is provided for the following features to be achieved: the housing (9) of the reduction gear (8) is attached to the machine frame (2) in a torsionally rigid fashion, inside the machine frame (2), between the driving device (6) and the drum housing wall (12) at the drum housing (11).
An automotive road milling machine for milling ground surfaces, comprising:
A road milling machine, comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Using power-driven tools, e.g. vibratory tools: rotary tools, e.g. milling drums
With power-driven tools, e.g. oscillated hammer apparatus: rotary, e.g. rotary hammers
Tools therefor, e.g. having exchangeable cutter bits: with exchangeable cutter bits or cutter segments
Construction of, or surfaces for, roads, sports grounds, or the like
About 6 years 7 months of term left · ends 27 May 2033 (estimated)
The invention relates to an automotive road milling machine having a quick-change milling drum system.
Owing to different job site situations and milling operations, it may be necessary to adapt the milling tool of a road milling machine to the specific tasks at hand. A milling drum with a specific tool spacing of the milling tools or a different tooling equipment is required if, for example, a specific surface roughness is to be achieved. In another case of use, specific carriageway widths only are to be removed so that a milling drum with a specific working width is required.
A special milling machine must normally be used in such situations, or the machine must be equipped with a milling drum adapted to the task at hand. Exchanging complete milling drums involves a great deal of effort and requires special aids for mounting or removing the milling drum.
In the following, embodiments of the invention are explained in more detail with reference to the drawings.
The following is shown:
FIG. 1 an automotive road milling machine, and
FIG. 1 depicts a road milling machine 1 in which the quick-change system for milling tubes described in the following can be used. Road milling machines commonly comprise a machine frame 2, with a combustion engine and operator's platform being mounted on said machine frame. The automotive road milling machine is provided with height-adjustable lifting columns 3 attached to the machine frame 2, where support wheels (not depicted in the figures) or crawler tracks 5 are mounted to said lifting columns 3.
The milling drum 4 is located underneath the machine frame 2 in a drum housing 11, which is limited at the sides by the drum housing walls 12,13. The material removed by the milling drum 4 is discharged, in a basically known manner, through a discharge opening 24 onto a first loading conveyor 7a and is transported further onto a second, height-adjustable and slewable loading conveyor 7b.
The milling drum 4 is arranged to rotate between drum housing walls 12,13 of the drum housing 11, said drum housing walls 12,13 running orthogonally to the axis of the milling drum 4, and is driven via a driving device 6 and a reduction gear 8.