Traction Control Device
First Claim
1. A traction control device of a construction machine comprising a braking mechanism provided to each of wheels and a differential adjusting mechanism for adjusting a differential between front and rear wheels, the traction control device controlling the braking mechanism and the differential adjusting mechanism, the traction control device comprising:
- a rotation speed detector that detects a rotation speed of each of the wheels;
a control-start determiner that determines whether or not to control the differential adjusting mechanism based on the detected rotation speed of each of the wheels; and
a differential adjusting mechanism controller that controls the differential adjusting mechanism based on a result of the determination of the control-start determiner, whereinthe control-start determiner comprises;
a right-left-wheel rotation speed difference calculating section that calculates a rotation speed difference between right and left wheels;
a right-left-wheel rotation speed ratio calculating section that calculates a rotation speed ratio between the right and left wheels by using an equation (1) shown below; and
a control-start determining section that determines to start controlling the differential adjusting mechanism when the rotation speed difference between the right and left wheels reaches or exceeds a pre-stored predetermined threshold for right-left-wheel rotation speed difference or when the rotation speed ratio between the right and left wheels reaches or exceeds a pre-stored predetermined threshold for right-left-wheel rotation speed ratio.
Equation 1
ω
ee=|(ω
l−
ω
r)/(ω
l+ω
r)|
(1)ω
ee;
rotation speed ratioω
l;
rotation speed of the left wheelω
r;
rotation speed of the right wheel
1 Assignment
0 Petitions
Accused Products
Abstract
A traction control device includes: rotation speed detectors provided to wheels; a control-start determiner that determines whether or not to control a braking mechanism and a differential adjusting mechanism based on rotation speeds; a braking mechanism controller that controls the braking mechanism based on a result of the determination of the control-start determiner; and a differential adjusting mechanism controller that controls the differential adjusting mechanism based on the result of the determination of the control-start determiner, in which the control-start determiner includes: a right-left-wheel rotation speed difference calculating section; a front-rear-wheel rotation speed difference calculating section; and a control-start determining section that determines whether or not to start controlling at least one of the braking mechanism and the differential adjusting mechanism when one of rotation speed differences reaches or exceeds a predetermined threshold.
49 Citations
3 Claims
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1. A traction control device of a construction machine comprising a braking mechanism provided to each of wheels and a differential adjusting mechanism for adjusting a differential between front and rear wheels, the traction control device controlling the braking mechanism and the differential adjusting mechanism, the traction control device comprising:
-
a rotation speed detector that detects a rotation speed of each of the wheels; a control-start determiner that determines whether or not to control the differential adjusting mechanism based on the detected rotation speed of each of the wheels; and a differential adjusting mechanism controller that controls the differential adjusting mechanism based on a result of the determination of the control-start determiner, wherein the control-start determiner comprises; a right-left-wheel rotation speed difference calculating section that calculates a rotation speed difference between right and left wheels; a right-left-wheel rotation speed ratio calculating section that calculates a rotation speed ratio between the right and left wheels by using an equation (1) shown below; and a control-start determining section that determines to start controlling the differential adjusting mechanism when the rotation speed difference between the right and left wheels reaches or exceeds a pre-stored predetermined threshold for right-left-wheel rotation speed difference or when the rotation speed ratio between the right and left wheels reaches or exceeds a pre-stored predetermined threshold for right-left-wheel rotation speed ratio.
Equation 1
ω
ee=|(ω
l−
ω
r)/(ω
l+ω
r)|
(1)ω
ee;
rotation speed ratioω
l;
rotation speed of the left wheelω
r;
rotation speed of the right wheel - View Dependent Claims (2, 3)
-
Specification