Mobile base having telescopic foot pedal
Disclosed is a mobile base having a telescopic foot pedal. The mobile base comprises a base frame, a counterweight block, and a base cover; wherein the base frame is cooperatively provided with a lifting primary arm, one end of the lifting primary arm rotatably mating with a guiding rod, a lower end of the guiding rod mating with a track locking member fixed on the base frame, the other end of the lifting primary arm rotatably mating with a U-shaped support on the base frame, an end portion on the lifting primary arm proximate the guiding rod is cooperatively provided with a telescopic foot pedal, the other end of the lifting primary arm being connected to a group of lifting secondary arms, the lifting secondary arms respectively rotatably mating with the base frame, bottoms of the lifting secondary arms being fixedly provided with universal wheels.
1. A mobile base having a telescopic foot pedal, comprising a base frame, a counterweight block, and a base cover; wherein the base frame is cooperatively provided with a lifting primary arm having two ends, a first end of the lifting primary arm rotatably mating with a guiding rod, a lower end of the guiding rod mating with a track locking member fixed on the base frame, a second end of the lifting primary arm rotatably mating with a U-shaped support on the base frame; wherein said first end of the lifting primary arm is cooperatively provided with the telescopic foot pedal, said second end of the lifting primary arm is connected to a group of lifting secondary arms, said group of lifting secondary arms respectively rotatably mating with the base frame, bottoms of the lifting secondary arms being fixedly provided with universal wheels;
wherein the track locking member comprises a retaining ring, a cyclic step-like surface arranged in the retaining ring, and a track mating bump arranged within the cyclic step-like surface, wherein the track mating bump is formed by a downwardly inclined portion, a hook-shaped portion, and an upwardly inclined portion.
2. The mobile base having a telescopic foot pedal according to claim 1 , wherein a tension spring B is arranged between an upper portion of the guiding rod and the lifting primary arm.
3. The mobile base having a telescopic foot pedal according to claim 1 , wherein the lifting secondary arms are hinged to a cross-like joint, the cross-like joint being connected to the lifting primary arm via an arranged hexagon socket head cap screw.
4. The mobile base having a telescopic foot pedal according to claim 3 , wherein a tension spring A is arranged between the cross-like joint and the lifting primary arm.