Energy-saving generator security device

The utility model relates to an energy-saving generator safety device, belonging to the field of petroleum drilling machine equipment. The energy-saving generator safety device mainly comprises an energy-saving generator, a universal coupling, a pneumatic tube clutch and a drive chain case. A pneumatic brake device is mounted on the rotor shaft of the energy-saving generator. The pneumatic brake device includes an inertia brake air bag, an inertia brake friction hub, a support frame and a three-bit four-way gas switch. The support frame is mounted on a seat of the energy-saving generator. The inertia brake friction hub is sleeved by the inertia brake air bag, and the inertia brake air bag is fixed to the support frame. The inertia brake air bag is connected with a gas source through a gas pipeline and the three-bit four-way gas switch. The pneumatic tube clutch is connected with the gas source through a gas pipeline and the three-bit four-way gas switch. The energy-saving generator safety device provided by the utility model is simple in structure and convenient in installation and operation, and is fundamentally prevented from hidden troubles in repair, backwinding and maintenance of the energy-saving generator, thereby having the advantages of high safety, high versatility and convenience for modification.