To facilitate the retraction of a hose without any malfunction by clamping the hose between elastically deformable rotors laid as a pair and filled with the air of pressure equal to or higher than the atmospheric pressure, and rotating the hose in a retracting direction for the recovery thereof.

A hose retracting device 104 is secured with a pair of front and rear mounting brackets 171 between a self-travelling vehicle cab and a storage part. A gear box 173 is mounted on both brackets 171, and a first rotor 174 and a second rotor 175 are rotatably held on the gear box 173. Also, each of the rotors 174 and 175 is formed as pneumatic tire type hollow bodies with rubber rollers 174b and 175b laid on the external surface of metallic cylindrical rims 174a and 175a. Furthermore, the both rotors 174 and 175 are filled with the air of pressure equal to or higher than the atmospheric pressure, and made elastically deformable. Then, a hose is clamped between the rubber rollers 174b and 175b of both rotors 174 and 175 and rotated in a retracting direction. As a result, the hose can be smoothly retracted.