Patent ID: 8731787

Claim:
A transporter vehicle comprising: an automotive vehicle body; a loading platform tiltably disposed on said vehicle body to load one or more objects to be transported thereon; a hoist cylinder telescopically disposed between said loading platform and said vehicle body and expanding at the time of dumping the objects from said loading platform to obliquely tilt said loading platform; a hydraulic source for generating pressurized liquid to be supplied to said hoist cylinder; a control valve device disposed between said hydraulic source and said hoist cylinder for controlling the supply and the discharge of the pressurized liquid to and from said hoist cylinder; and an operating device to switch said control valve device; a tilting state detector to detect a tilting state of said loading platform to said vehicle body; a weight detector to detect a weight of said objects loaded on said loading platform; and a controller for controlling switching of said control valve device based upon signals from said operating device, said tilting state detector and said weight detector; wherein said controller is configured to: determine whether or not said hoist cylinder approaches a stop position on a contraction side thereof based upon signals from said operating device and said tilting state detector; and when it is determined that said hoist cylinder approaches the stop position on the contraction side, control the switching of said control valve device to change a contracting speed of said hoist cylinder corresponding to the weight on said loading platform detected by said weight detector by variably adjusting a flow amount of liquid flowing between said hoist cylinder and said hydraulic source through said control valve device, wherein said controller variably sets a determination reference value, at the time of determining whether or not said hoist cylinder approaches the stop position on the contraction side, corresponding to a tilting speed of said loading platform, and corrects a start timing of the flow amount adjustment according to the determination reference value.