Device and method for lifting and installing electric plate of screen cabinet

The invention discloses a device and a method for lifting and installing an electric plate of a screen cabinet. The device for lifting and installing an electric plate of a screen cabinet comprises a support, a force arm, a lifting mechanism and grabbing mechanisms used for grabbing the electric plate, wherein the grabbing mechanism are installed on the support, one end of the force arm hinged to the support enables the support to rotate around the force arm under the gravity action of the electric plate, and the other end of the force arm is fixedly connected with the lifting mechanism. The method further provided by the invention comprises the following steps, 1, the electric plate is grabbed by grabbing mechanisms, step 2, the lifting mechanism drives the force arm to rise, the support and the electric plate rotate around the force arm under the gravity action in the lifting process of the force arm to be in a vertical state, 3, the lifting mechanism is used for conveying the electric plates in the vertica