Fuel tank mounting device and an industrial use vehicle therewith

A fuel tank mounting device of a vehicle for mounting a fuel tank, comprising:

• an arm rotatably supported on a stationary part of the vehicle, the arm being rotatable between a first position at which the tank is placed over a top face of the vehicle or over a counterweight, provided at a rear of the vehicle, at a front or rear of a seat on which an operator sits, and a second position at which the tank is placed at a right side or a left side of the vehicle with respect to a traveling direction of the vehicle,
• wherein
• the arm forms a U-shape including a first arm provided with a tank fixing member, a second arm fixedly extending from the first arm, and a third arm fixedly extending from the second arm, such that the first arm extends over the top face of the counterweight when the arm is in the first position, and extends downward along the right side or the left side of the vehicle when the arm is in the second position,
• an open end of the U-shape arm faces a width direction of the vehicle when the arm is in the first position,
• the third arm is supported by the stationary part of the vehicle, such that the arm rotates about an arm rotation axis along a plane vertical to a longitudinal axis of the vehicle.