CONTROL DEVICE FOR HYDRAULIC TRAVELING DEVICE

A travel control device is provided with hydraulic pumps 31 and 41 of a variable capacity type that are driven by an engine EG; hydraulic motors 32 and 42 that are driven by discharged oil from the hydraulic pumps; traveling devices 5 that are rotation-driven by the hydraulic motors; a travel operation lever 52 that is operated so as to instruct a traveling operation; a first control valve 62 for generating a charged hydraulic pressure by adjusting the discharged oil from a charge pump 61 and a second control valve 65 for generating a capacity control hydraulic pressure in accordance with the operation of the travel operation lever. The first control valve is designed to pressure-adjust and generate a charged hydraulic pressure in accordance with the rotation speed of the engine, and the hydraulic pump is subjected to a variable capacity control process by a capacity control hydraulic pressure that is pressure-adjusted and generated by the second control valve.