Tadano Ltd.

Seiji Takeda

Masanori Oshima

Yudai Masuda

Tatsuya Yamaguchi

Yoshitaka Saijo

Provided is a work vehicle that can be transported by being loaded onto a trailer without having the outriggers removed. The work vehicle (rough terrain crane) is transported by being loaded onto a low bed trailer including a low bed and a high portion (first high bed, second high bed) higher than the low bed in at least one of the front and the rear of the low bed, and includes: outrigger units (front outrigger unit, rear outrigger unit) that are mounted to the front and rear of a vehicle body; and a lift unit that lifts and lowers the outrigger units (front outrigger unit, rear outrigger unit with respect to the vehicle body.

Work vehicle

A swivel joint for supplying and discharging various types of fluid between the top and bottom of a rotating platform includes an outer cylinder, an intermediate cylinder, and an inner cylinder that are arranged concentrically around a central axis. The intermediate cylinder can freely rotate with respect to the outer cylinder and the inner cylinder, and a hydraulic fluid flow channel is provided between the outer cylinder and the intermediate cylinder. A hot water flow channel between the lower portion of the inner cylinder and the intermediate cylinder includes an inner annular groove formed on the inner circumferential face of the intermediate cylinder. An air flow channel between the upper portion of the inner cylinder and the intermediate cylinder includes outer annular grooves formed on the outer surface of the inner cylinder.

Growing community of inventors

Kagawa, Japan

Seiji Takeda