Hydraulic circuit for traveling
AssigneeTeijin Seiki Co., Ltd.
InventorSadayuki Tanabe
Life of this patent
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Abstract
If a hydraulic motor (23) (traveling wheel (27)) is rotated (or skidding) at high rate, and a hydraulic motor (24) is hardly rotated, a detection controller (68) compares the rotational speeds of both hydraulic motors (23, 24). Then the rotation detected by the rotation detectors (66, 67) to detect the traveling wheel (27) to be skidding, and moves a piston (71) to allow a negative brake (40) to give a braking force to the hydraulic motor (23), and rotate the hydraulic motor (24). In this way, this invention can release the traveling wheel from skidding without the use of a flow dividing valve.
Claims5
A hydraulic circuit for traveling comprising:
- a hydraulic pump;
- two hydraulic motors for driving and rotating traveling wheels, respectively;
- a pumping passage for supplying a high pressure fluid discharged from the hydraulic pump to the two hydraulic motors, the pumping passage including one end connected to said hydraulic pump and bifurcated halfway, other ends of the pumping passage being connected to the hydraulic motors, respectively;
- two rotation detectors for detecting rotational speeds of the hydraulic motors, respectively;
- a detection controller for detecting whether or not any traveling wheel is skidding by comparing the rotational speeds detected by the rotation detectors;
- and
- two braking force applying members for applying a braking force only to the hydraulic motor of the skidding traveling wheel on the basis of the result of detection from the detection controller, the braking force applying members being installed in each of the hydraulic motors.
Dependencies are inferred from the claim text.