Automatic-inflating airbag protection device

The invention discloses an automatic-inflating airbag protection device. The airbag protection device adopts the main structure that a group of air bags is arranged below a base for placing a large mass comparator; an operating platform is arranged on the outer sides of the air bags; the periphery of the base is in contact with the operating platform in a matched way through damping limiting part; the air bags are connected with a pressure switch; the pressure switch is connected with and controls an air pump through circuits; the air pump is sequentially connected with an FRL (filter, relief valve and lubricator), a deflation ball valve and air bags through pneumatic pipelines. The starting and stopping of the air pumps is controlled through the pressure switch when the device is operated, so as to ensure that the pressure in the air bags is always within a set value range, air in the air bags is discharged through the deflation ball valve when the device is not operated, and then the large mass comparator is stably located onto a supporting seat. According to the device, safe and reliable protection can be provided for the transportation of the large mass comparator, and the operation of the comparator is not affected after the comparator reaches a destination.