Ground knife electrical locking device and line interval with same

The invention discloses a ground knife electrical locking device and a line interval with the same. The device comprises a power supply unit, a switching-on branch circuit, a switching-off branch circuit and a ground knife operating mechanism box, the ground knife operating mechanism box is provided with a switching-on control end and aswitching-off control end, the switching-on branch circuit iselectrically connected with the power supply unit and the switching-on control end, the switching-off branch circuit is electrically connected with the power supply unit and the switching-off controlend; the switching-on branch circuit comprises line switch auxiliary contacts and at least one switching-on switch, all the switching-on switches are connected in parallel, the line switch auxiliary contacts are connected with the switching-on switches in series, and the switching-on branch circuit is used for controlling the ground knife operating mechanism box to execute switching-on operation according to the line switc