Abstract:
Die Erfindung betrifft ein Fahrzeug (1) aufweisend ein Fahrwerk (2) mit einem Fahrgestell (3) und mehreren an dem Fahrgestell (3) drehbar gelagerten, antriebslosen Rädern (4), die zum Tragen und Verfahren des Fahrwerks (2) auf einer Fahrbahn (5) ausgebildet sind, und aufweisend eine Antriebseinheit (6) mit Antriebsrädern (7, 7.1, 7.2), die zum angetriebenen Abrollen auf der Fahrbahn (5) ausgebildet sind, wobei die Antriebseinheit (6) einen ersten Motor (M1) aufweist, der ein erstes Antriebsrad (7.1) der Antriebsräder (7) antreibt und die Antriebseinheit (6) einen zweiten Motor (M2) aufweist, der ein zweites Antriebsrad (7.2) der Antriebsräder (7) unabhängig von dem ersten Antriebsrad (7.1) antreibt, und das Fahrzeug (1) ein die Antriebseinheit (6) an dem Fahrgestell (3) lagerndes Drehlager (16, 16a, 16b) aufweist, welches eine automatisch schaltende Kupplung (8, 8a, 8b) umfasst, die ausgebildet ist, in ihrem ausgekuppelten Zustand ein Drehen der Antriebseinheit (6) bezüglich des Fahrgestells (3) um eine vertikale Drehachse (D) zuzulassen und in ihrem eingekuppelten Zustand die Antriebseinheit (6) starr mit dem Fahrgestell (3) zu verbinden. Die Erfindung betrifft außerdem ein Verfahren zum Ansteuern eines solchen Fahrzeugs (1).
Abstract:
The invention relates to an automatically controlled vehicle for transporting an object, comprising a chassis having on an upper side a carrying surface for the object, a pivotable first and second wheel support arm, each having a wheel at the outer ends thereof, per wheel an electric drive motor connected thereto and a control unit for separate control of each of the drive motors. The chassis is formed by an elongate central chassis beam extending in a longitudinal direction of the vehicle, wherein the first wheel support arm is connected to the chassis beam at a first distance from a first outer end of the chassis beam, and wherein the second wheel support arm is connected to the chassis beam at a second distance from a second outer end of the chassis beam.
Abstract:
The invention relates to a crawler for transporting loads, having at least two chain drive units (12a, 12b) and a bearing unit (16) on a chassis (14) between the chain drive units (12a, 12b), to a system comprising a plurality of crawlers of this type and to a method for transporting loads. In order to provide a crawler, and a system and a method, by means of which very large loads can be transported simply and exactly in a controllable manner, the bearing unit has a load pickup (20) for a load to be transported, and has a hoist cylinder (18) having a piston (19) for adjusting the height of the load pickup (20). The hoist cylinder and the piston (19) are mounted to the bearing unit (16) in a rotationally locked manner, wherein the load pickup (20) is coupled to the hoist cylinder (18) by way of a ball and socket connection (22, 24) such that a rotational and swivel movement between the load pickup (20) and the bearing unit (16) is possible, and that a rotary sensor (27) is provided in order to determine an angle of rotation between the load pickup (20) and the piston (19) or the hoist cylinder (18).
Abstract:
Die Erfindung betrifft eine Antriebseinheit (1) zum Antrieb einer Transportplattform (2) eines Transportsystems mit einer Antriebsaufnahme (4), mit einem Fahrgestell (3), wobei das Fahrgestell (3) über die Antriebsaufnahme (4) in der Transportplattform (2), insbesondere um eine Lenkachse (5), lenkbar gelagert ist, mit mindestens zwei Antriebsräder (6), die in dem Fahrgestell (3) drehbar gelagert sind, wobei die mindestens zwei Antriebsräder (6) mit unterschiedlichen Antriebsdrehmomenten und/oder gegenläufig orientierten Antriebsdrehmomenten und/oder gegenläufig orientierten Drehrichtungen beaufschlagt werden können, wobei die Antriebseinheit (1) zur Lenkung der Transportplattform (2) durch die Beaufschlagung der mindestens zwei Antriebsräder (6) mit unterschiedlichen Antriebsdrehmomenten ausgebildet ist.
Abstract:
Broadly, one aspect of the present invention is an articulated combine (10) having increased on-board grain storage capacity (e.g., 1,200 bushels) and which is composed of a forward unit (13) having an operator's cab (15), an engine (18), a grain harvesting assembly (16), a grain transfer assembly (24), and being devoid of an on-board grain bin; and a rearward unit (14) jointedly attached to the forward section and having, steerable and powered wheels (31), an on-board grain bin (28) for receiving grain from the forward section grain transfer assembly (24), and a grain off-loading assembly (26). The grain transfer assembly, joint, and grain off-loading assembly (24) and controls, form other aspects of the present invention.
Abstract:
The invention relates to a steering device (50) for an articulated tracked vehicle (10) comprising a front and a rear vehicle unit (11, 12), wherein said steering device (50) comprises a substantially vertical steering link (52) about whose axis (Y1) said front and rear vehicle units (11, 12) are pivotable, The vertical steering link (52) is arranged substantially centrally of the front vehicle unit (11), and the steering device (50) comprises a steering bearing configuration (52) comprising an outer bearing ring (52a) arranged to be attached to a centre beam (30) of said front vehicle unit (11), and an inner bearing ring (52b) rotatably arranged relative to said outer bearing ring (52a) via a bearing (53) about the axis (Y1) of the steering link (52).
Abstract:
A crawler track machine (10) such as a cold planar milling machine (10) may incorporate a steering system having multiple steering modes including coordinated steering modes as well as an improved crab mode. Orientations of front and rear pairs of crawler tracks (18) may be managed via a linear actuator control system (70) adapted to dynamically adjust lengths of front and rear tie rods (40, 40'). In one disclosed embodiment, the machine (10) may include at least a coordinated four-track (18) steering mode, an independent front track (18) steering mode, and a crab mode. The crab mode may involve use of automated linear actuators (60) on the tie rods to assure that all tracks (18) remain substantially parallel to one another, and may involve the use of lookup tables to coordinate actuator (60) movements in response to individual parallel track (18) angle demands as a function of steering inputs.
Abstract:
A propulsion system is for a road milling machine with a rotatable cutter drum (3). The system includes four crawler assemblies (12) movably coupled with the mainframe so as to define front and rear, and left and right, pairs of crawler assemblies. Four steering actuators (14) are each coupled with a separate crawler assembly and each angularly displaces the crawler about a vertical axis (12a). A first pump (16A) is fluidly coupled with the left pair of crawlers and a second pump (16B) is fluidly coupled with the right pair of crawlers. A control (20) is configured to selectively operate the four actuators in a plurality of different steering modes, one steering mode being a circle steer mode, and to operate the two pumps such that one of the left and right pairs of crawlers are drivable by the first pump in one direction while the other pair of crawlers are drivable in an opposing direction.
Abstract:
A drive system is provided for an off-road vehicle that moves across unprepared terrain such as snow, tundra or ice. A plurality of n flexible airbag tires are in contact with the terrain and are driven by n top drive rollers carried by the chassis of the vehicle which frictionally engage and drive the airbag tires. A novel electromotive drive system is provided which includes a plurality of n electromotive drive motors connected to each of the n top drive rollers. Separate controllers having speed sensors and torque sensors are provided for sensing and controlling the instantaneous rotational speed and torque of each independent electromotive drive motor. A central, cab mounted computer based controller responsive to the independent motor controllers and various other inputs controls the instantaneous speed and torque of each of the individual drive motors. The independent speed and torque control of each drive motor is used to increase traction, assist steering, provide braking and regenerative electrical power.