Tunnel lining trolley and ventilation pipeline crossing protection device

The utility model discloses a tunnel lining trolley and ventilating duct crossing protection device which comprises a trolley portal and a ventilating duct, two parallel rack beams are arranged in the middle of the trolley portal in the height direction, a plurality of rack stand columns are arranged between the rack beams, a plurality of gaps are formed between the rack beams and the rack stand columns, and the ventilating duct is arranged between the rack beams and the rack stand columns. A fixing sleeve is arranged in one of the gaps, the ventilation pipeline is fixedly arranged in the fixing sleeve in a sleeved mode, and a buffering cushion is arranged in the fixing sleeve, so that the ventilation pipeline is prevented from being damaged when installed. When the lining trolley and ventilation pipeline cross protection device is used, the ventilation pipeline is placed in the fixing sleeve to be protected and limited, operation space is provided for the ventilation pipeline, normal ventilation of a tunnel