Roadway supporting device with early warning function for coal mine safety

The utility model discloses a roadway support device for coal mine safety with an early warning function, which comprises a base body, a buzzer support piece, a contact switch and a movable piece, the buzzer support piece is nested at the upper end of the base body, and the lower end of the buzzer support piece is connected with a first air bag connected with the inner side of the upper end of the base body in a bonding manner; meanwhile, the buzzer supporting piece and the base body are each provided with a contact switch, a bearing on the outer side of the base body is connected with an abutting piece, and a first torsional spring is installed at the shaft end of the abutting piece in a nested mode. According to the roadway supporting device with the early warning function for coal mine safety, when the buzzer supporting piece makes contact with collapse and other conditions, the alarm work is achieved through the negative pressure state between the two sets of air bags, meanwhile, the contact abutting piec