Sound-insulation structure for cab-over truck

A sound-insulation structure for a cab-over truck, comprising:

• a chassis frame extending in a front-to-rear direction of a vehicle;
• a front tire arranged at an outer side, in a vehicle-width direction, of the chassis frame;
• a cab capable of being set to a non-tilted state where a front edge side and a different edge side thereof are supported by the chassis frame, and to a tilted state where the different edge side is rotated and moved upward about the front edge side;
• a tilt stay keeping the cab in the tilted state;
• an engine room arranged at an inner side, in the vehicle-width direction, of the chassis frame and below the cab in the non-tilted state;
• a cab-side cover fixed to the cab;
• and
• a chassis-side cover fixed to the chassis frame, wherein
• a rear edge portion of the tilt stay is located between the front tire and the chassis frame while the cab is in the non-tilted state,
• the cab-side cover includes a cab-side front cover portion located at an outer side, in the vehicle-width direction, of the tilt stay and extending further forward than the rear edge portion of the tilt stay while the cab is in the non-tilted state, and
• the chassis-side cover includes a chassis-side front cover portion located at an inner side, in the vehicle-width direction, of the tilt stay and extending further forward and downward than a front lower edge of the cab-side front cover portion while the cab is in the non-tilted state.