Small-aperture tunnel ventilating duct and low-voltage cable multipurpose suspension device

The utility model provides a small-aperture tunnel ventilating duct and low-voltage cable multipurpose suspension device which comprises a multipurpose compartment, and a plurality of sets of symmetrically-arranged suspension rods are fixed to the top of the multipurpose compartment. A suspension device base plate used for being fixedly connected with the top wall of the tunnel is fixed to the top end of the suspension rod. A small-aperture ventilation pipe is supported at the top of the multipurpose compartment and between the suspension rods; a dust cover is hinged to the bottom of the outer side of the suspension rod through a dust cover connecting hinge, a low-voltage cable penetrates through the interior of the dust cover on one side, and a communication optical cable penetrates through the interior of the dust cover on the other side. According to the device, reasonable arrangement of the ventilation pipeline in the small-aperture tunnel is effectively guaranteed, arrangement space of the lighting devic