Shock wave generating device for testing shock wave sensor

The utility model discloses a shock wave generating device for testing a shock wave sensor, which comprises a gas storage cavity, a pressure regulating cavity and a driving mechanism, the gas storage cavity is communicated with the pressure regulating cavity, a gas outlet is arranged on the gas storage cavity, and a gas valve is arranged at the gas outlet; a piston is arranged in the pressure regulating cavity, and a piston rod of the piston is connected with a driving mechanism; the driving mechanism comprises a driving motor, a driving gear is arranged on a motor shaft of the driving motor, the driving gear is meshed with a driven gear, a transmission sleeve is coaxially arranged on one side of the driven gear, and the transmission sleeve is coaxially arranged on the piston rod in a sleeving mode and connected with the piston rod in a threaded fit mode. The transmission sleeve rotates along with the driven gear and can drive the piston to be close to or away from the air storage cavity through the piston ro