Abstract: A hydraulic driving device includes: a hydraulic motor configured to operate by flushing oil from a hydraulic pump through a high pressure oil passage and a low pressure oil passage; a low pressure selective valve configured to operate in accordance with differential pressure between the high pressure oil passage and the low pressure oil passage, and to discharge the oil in the low pressure oil passage inside a motor case; a tank oil passage configured to connect the inside of the motor case with an oil tank; and a choke throttle provided to the low pressure selective valve or to an oil passage lower than the low pressure selective valve.

Abstract: A hydraulic driving device includes: a hydraulic motor configured to operate by flushing oil from a hydraulic pump through a high pressure oil passage and a low pressure oil passage; a low pressure selective valve configured to operate in accordance with differential pressure between the high pressure oil passage and the low pressure oil passage, and to discharge the oil in the low pressure oil passage inside a motor case; a tank oil passage configured to connect the inside of the motor case with an oil tank; and a choke throttle provided to the low pressure selective valve or to an oil passage lower than the low pressure selective valve.

Abstract: An operation lever lock apparatus includes: operation levers; hydraulic control valves arranged at a portion lower than a floor panel; and link members, each of the link members extending downward from a base part of a corresponding one of the operation levers to be connected to a corresponding one of the hydraulic control valves, wherein the hydraulic control valves are operated by causing the link members to move vertically, the apparatus further including: an engagement member provided under the link member; and a stopper member having an engagement part to be engaged in the engagement member, wherein the stopper member is movable between an engaged position at which the engagement part engages in the engagement member and a released position at which the engagement part is released from the engagement member, and arranged to restrict movement of the link member in a vertical direction when positioned in the engaged position.

Abstract: An operation lever lock apparatus includes: operation levers; hydraulic control valves arranged at a portion lower than a floor panel; and link members, each of the link members extending downward from a base part of a corresponding one of the operation levers to be connected to a corresponding one of the hydraulic control valves, wherein the hydraulic control valves are operated by causing the link members to move vertically, the apparatus further including: an engagement member provided under the link member; and a stopper member having an engagement part to be engaged in the engagement member, wherein the stopper member is movable between an engaged position at which the engagement part engages in the engagement member and a released position at which the engagement part is released from the engagement member, and arranged to restrict movement of the link member in a vertical direction when positioned in the engaged position.