The invention discloses a mechanical type power generation device. The mechanical type power generation device comprises a foundation support, an L-shaped rod body, a striker and multiple power generation devices. The foundation support is provided with a rotating disc, and the rotating disc can be driven by a motor to rotate. The L-shaped rod body is arranged on the rotating disc in a pivoted manner; the front end of the L-shaped rod body is connected with the motor on the rotating disc, therefore, the motor can draw the L-shaped rod body to swing and deflect so that the gravity center of therotating disc can be changed till the L-shaped rod body rotates to the position below the rotating disc, and then the L-shaped rod body starts to be loosened and released; and in addition, the frontend of the L-shaped rod body is connected with an energy collection device which is arranged on the rotating disc through a spring, and when the rotating disc rotates, the spring can be stretched to drive the energy collection device to operate for energy collection. The striker is used for striking the L-shaped rod body which rotates to the position below the rotating disc along with the rotatingdisc, after the L-shaped rod body swings, the spring can elastically return and achieve the inertia effect, furthermore, the rotating disc is driven to rotate continuously, and the power generation devices are linked to perform power generation.