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AssigneeVolvo Construction Equipment Holding Sweden AB
InventorsKjell-Owe Hjerth, Lennart Hjert
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A method for preventing overturning a dump vehicle, the vehicle including a forward vehicle section with a forward frame and a wheel axle supported by the frame. The dump vehicle further includes a rear vehicle section with a rear frame and at least one wheel axle supported by the frame. The dump vehicle further includes an articulation joint, which connects the forward frame and the rear frame and allows the forward frame and the rear frame to pivot in relation to each other about an axis extending in a longitudinal direction of the vehicle. During a tilting procedure for unloading material from a container of the dump vehicle, the method includes determining if there is a risk for a pair of wheels of the wheel axle of the forward vehicle section to lose ground contact or if the pair of wheels have already lost ground contact. A warning signal for preventing an uncontrolled rotation of the forward vehicle section relative to the rear vehicle section via the articulation joint is further established when it is determined that the wheels of the forward wheel axle have lost or are about to lose ground contact.
A method for preventing overturning a dump vehicle (1), which comprises a forward vehicle section (2) with a forward frame (3) and a wheel axle (4) supported by the rear frame, a rear vehicle section (7) with a rear frame (8) and at least one wheel axle (9,10) supported by the frame, and an articulation joint (21), which connects the forward frame (3) and the rear frame (8) and allows the forward frame and the rear frame to pivot in relation to each other about an axis extending in a longitudinal direction of the vehicle characterized in, during a tilting procedure for unloading material from a container (11) of the dump vehicle,
A method according to any preceding claim, characterized in sensing a position of the wheel axle (9,10) of the rear vehicle section (7) and using this information for determining the risk for the wheels of the wheel axle (4) of the forward vehicle section (2) to loose ground contact.
A method according to any preceding claim, characterized in sensing an inclination of a bogie element (24), which is pivotably suspended in a frame beam of the rear vehicle section (7), and using this information for determining the risk for the wheels of the wheel axle (4) of the forward vehicle section (2) to loose ground contact.
A method according to any preceding claim, characterized in determining an unloading condition and initiating the determination if there is a risk for a pair of wheels of the wheel axle (4) of the forward vehicle section (2) to loose ground contact or if said pair of wheels have already lost ground contact only if said unloading condition is confirmed.
A method according to any preceding claim, characterized in receiving said warning signal and automatically preventing tilting of the container (11).
A method according to any of the preceding claims, characterized in receiving said warning signal and informing an operator of the dump vehicle (1) that there is a risk for overturning of the vehicle.
An arrangement (47) for preventing overturning a dump vehicle (1), which vehicle comprises a forward vehicle section (2) with a forward frame (3) and a wheel axle (4) supported by the rear frame, a rear vehicle section (7) with a rear frame (8) and at least one wheel axle (9,10) supported by the frame, and an articulation joint (21), which connects the forward frame (3) and the rear frame (8) and allows the forward frame and the rear frame to pivot in relation to each other about an axis extending in a longitudinal direction of the vehicle characterized in, that the arrangement comprises means (34,35,36,37,53) for determining if there is a risk for a pair of wheels of the wheel axle (4) of the forward vehicle section (2) to loose ground contact or if said pair of wheels have already lost ground contact, and means (38) for establishing a warning signal for preventing an uncontrolled rotation of the forward vehicle section (2) relative to the rear vehicle section (7) via the articulation joint (21) when it is determined that the wheels of the forward wheel axle (4) has lost or is about to loose ground contact.
Dependencies are inferred from the claim text.