A traveling vehicle comprising, a vehicle body frame; a pair of right and left front crawler traveling devices (30AR, 30AL); a pair of right and left rear crawler traveling devices (70AR, 70AL); a front suspension device that suspends the pair of right and left front crawler traveling devices (30AR, 30AL) on the vehicle body frame; and a rear suspension device that suspends the pair of right and left rear crawler traveling devices (30AR, 30AL) on the vehicle body frame, wherein the front suspension device integrally suspends the pair of right and left front crawler traveling devices (30AR, 30AL) on the vehicle body frame and allows the pair of right and left front crawler traveling devices (30AR, 30AL) to be swingable or elevatable in the vertical direction with respect to the vehicle body frame, characterized in that the front suspension device includes: a swing support portion that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis, a rotation arm that extends in the horizontal direction and is supported by the swing support portion to be rotatable at the center of the rotation arm in the horizontal direction by means of a motor, a right swing arm that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis and has an end connected to the right front crawler traveling device, a left swing arm that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis and has an end connected to the left front crawler traveling device, a right connection arm that has one end connected to a right end of the rotation arm and the other end connected to the right swing arm, and a left connection arm that has one end connected to a left end of the rotation arm and the other end connected to the left swing arm, and wherein the traveling vehicle further comprises a cushion mechanism that is provided between the vehicle body frame and the swing support portion. a vehicle body frame; a pair of right and left front crawler traveling devices (30AR, 30AL); a pair of right and left rear crawler traveling devices (70AR, 70AL); a front suspension device that suspends the pair of right and left front crawler traveling devices (30AR, 30AL) on the vehicle body frame; and a rear suspension device that suspends the pair of right and left rear crawler traveling devices (30AR, 30AL) on the vehicle body frame, wherein the front suspension device integrally suspends the pair of right and left front crawler traveling devices (30AR, 30AL) on the vehicle body frame and allows the pair of right and left front crawler traveling devices (30AR, 30AL) to be swingable or elevatable in the vertical direction with respect to the vehicle body frame, characterized in that the front suspension device includes: a swing support portion that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis, a rotation arm that extends in the horizontal direction and is supported by the swing support portion to be rotatable at the center of the rotation arm in the horizontal direction by means of a motor, a right swing arm that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis and has an end connected to the right front crawler traveling device, a left swing arm that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis and has an end connected to the left front crawler traveling device, a right connection arm that has one end connected to a right end of the rotation arm and the other end connected to the right swing arm, and a left connection arm that has one end connected to a left end of the rotation arm and the other end connected to the left swing arm, and a swing support portion that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis, a rotation arm that extends in the horizontal direction and is supported by the swing support portion to be rotatable at the center of the rotation arm in the horizontal direction by means of a motor, a right swing arm that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis and has an end connected to the right front crawler traveling device, a left swing arm that is supported by the vehicle body frame to be swingable in the vertical direction about the horizontal direction serving as an axis and has an end connected to the left front crawler traveling device, a right connection arm that has one end connected to a right end of the rotation arm and the other end connected to the right swing arm, and a left connection arm that has one end connected to a left end of the rotation arm and the other end connected to the left swing arm, and wherein the traveling vehicle further comprises a cushion mechanism that is provided between the vehicle body frame and the swing support portion.