Punching device for bridge construction site

The invention discloses a punching device for a bridge construction site. The punching device structurally comprises a punching machine, a foldable pushing hand, a punching auxiliary device and universal wheels. The four universal wheels are mechanically connected to the four corner positions of the bottom surface of the punching auxiliary device, and the punching machine is installed on the top surface of the punching auxiliary device. Compared to a prior art, the punching device has the beneficial effects that the punching device is provided with the punching auxiliary device, an combined arrangement of a turnover foldable plate, an auxiliary turnover mechanism, a support sliding seat 33 and an auxiliary sliding seat moving mechanism 34 has an adjusting function of punching intervals anda foldable function, an occupied space is little, carrying is convenient, and punching is carried out on the side faces of an bridge without the fact that staffs drag the punching machine by arms; and height and horizontal i