Dump vehicle overturn preventing device
First Claim
1. An overturn preventing device for a dump vehicle equipped with a body rotatably supported on a frame, rear wheels, and hoist cylinders that expand and contract to rotate the body around a rotation axis aligned substantially parallel with a rear-wheel axle, the device comprising:
- loaded weight estimation means which estimates loaded weight on the body;
vehicle rotation moment calculation means which calculates a vehicle rotation moment about the rotation axis caused by movement of a dump vehicle'"'"'s load upon discharging of the load based on the loaded weight estimated by the loaded weight estimation means;
reference moment calculation means which calculates a minimum value of a rotation moment required to lift front wheels of the vehicle off the ground and sets a reference moment not greater than the minimum value;
judgment means which judges whether or not the vehicle rotation moment calculated by the vehicle rotation moment calculation means has exceeded the reference moment calculated by the reference moment calculation means; and
notification means which notifies a driver that there is a probability of an overturn of the vehicle when the judgment means judges that the vehicle rotation moment has exceeded the reference moment.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an overturn preventing device for a dump vehicle equipped with a body (3) and hoist cylinders (5). The dump vehicle overturn preventing device comprises: a loaded weight estimation unit (32) which estimates loaded weight on the body; a vehicle rotation moment calculation unit (33) which calculates a vehicle rotation moment Mb caused by movement of the dump vehicle'"'"'s load upon discharging of the load; a reference moment calculation unit (34) which determines a reference moment Ms not greater than an overturn threshold moment MI which is the minimum value of a rotation moment required to lift the front wheels (1) off the ground; a judgment unit (35) which judges whether or not the vehicle rotation moment Mb has exceeded the reference moment Ms; and a display device (37) which notifies the driver that there is a probability of an overturn of the vehicle when the vehicle rotation moment Mb is judged to have exceeded the reference moment Ms. The device thus prevents overturning of the vehicle caused by the load sliding down from the body in a lump.
-
Citations
5 Claims
-
1. An overturn preventing device for a dump vehicle equipped with a body rotatably supported on a frame, rear wheels, and hoist cylinders that expand and contract to rotate the body around a rotation axis aligned substantially parallel with a rear-wheel axle, the device comprising:
-
loaded weight estimation means which estimates loaded weight on the body; vehicle rotation moment calculation means which calculates a vehicle rotation moment about the rotation axis caused by movement of a dump vehicle'"'"'s load upon discharging of the load based on the loaded weight estimated by the loaded weight estimation means; reference moment calculation means which calculates a minimum value of a rotation moment required to lift front wheels of the vehicle off the ground and sets a reference moment not greater than the minimum value; judgment means which judges whether or not the vehicle rotation moment calculated by the vehicle rotation moment calculation means has exceeded the reference moment calculated by the reference moment calculation means; and notification means which notifies a driver that there is a probability of an overturn of the vehicle when the judgment means judges that the vehicle rotation moment has exceeded the reference moment. - View Dependent Claims (2, 3, 4)
-
-
5. An overturn preventing device for a dump vehicle equipped with a body rotatably supported on a frame, rear wheels, and hoist cylinders that expand and contract to rotate the body around its rotation axis aligned substantially parallel with a rear-wheel axle, the device comprising:
-
front axle load detecting means which detects a load acting on a front wheels of the vehicle; rear axle load detecting means which detects a load acting on a rear wheels of the vehicle; loaded weight estimation means which estimates loaded weight on the body based on the detected values of the front axle load detecting means and the rear axle load detecting means; vehicle rotation moment calculation means which calculates a vehicle rotation moment about the rotation axis that is expected to occur when the dump vehicle'"'"'s load slides down from the body in a lump based on the loaded weight estimated by the loaded weight estimation means; reference moment calculation means which calculates a minimum value of the rotation moment required to lift front wheels of the vehicle off the ground based on the detected values of the front axle load detecting means and the rear axle load detecting means and sets a reference moment not greater than the minimum value; judgment means which judges whether or not the vehicle rotation moment calculated by the vehicle rotation moment calculation means has exceeded the reference moment calculated by the reference moment calculation means; and notification means which notifies a driver that there is a probability of an overturn of the vehicle when the judgment means judges that the vehicle rotation moment has exceeded the reference moment.
-
Specification