Electric lifting tripod for automatic laser tracking and measuring system thereof

An electric lifting tripod for laser automatic tracking, comprising a base, a plurality of extendable legs, a suspension assembly, a lifting part, a transmission mechanism and a motor, wherein:

• each of the plurality of extendable legs is rotatably connected to the base,
• the base comprises an adapter hole therethrough,
• the suspension assembly comprises an upper end connected to the base, a lower end, a first internal cavity through the upper and lower ends, a guide protrusion, a first baffle, a second baffle opposite to the first baffle, a line passage between the first and second baffles, and a second opening on sides of the first and second baffles away from the suspension assembly, wherein the adapter hole is connected to the first internal cavity, and the second opening is connected to the line passage,
• the lifting part has an upper end that extends above the base through the adapter hole, and is configured to support a laser instrument,
• the lifting part has a lower end that extends into the first internal cavity through the adapter hole and is connected to the transmission mechanism,
• the transmission mechanism is connected to the motor and comprises a lead screw and nut transmission, wherein the lead screw and nut transmission mechanism includes a rotatable lead screw and a nut, the lead screw is in the suspension assembly, the nut has a threaded hole adapted to mate with the lead screw, the nut is threadedly connected to the lead screw through the threaded hole, the nut is in the first internal cavity and connected to the lifting part, the motor is connected to a lower end of the lead screw and is configured to rotate the lead screw, the guide protrusion is configured to limit rotation of the nut, the nut comprises a limiting groove adapted to the guide protrusion, and the guide protrusion and the limiting groove constitute a first vertically sliding pair, and
• the motor is fixed to the lower end of the suspension assembly and is configured to move the lifting part up and down.