Multi-degree-of-freedom rocker arm type welding robot

The invention discloses a multi-degree-of-freedom controllable moving type welding robot. One end of a stand column is connected with a vehicle body; the other end of the stand column is respectively connected with one end of a main arm and the first connection end of a first rocker arm; the second connection end of the first rocker arm is connected with one end of a first connecting rod; the other end of the first connecting rod is connected with the second connection end of a second rocker arm; the first connection end of the second rocker arm is connected with the other end of the main arm; the third connection end of the second rocker arm is connected with one end of a second connecting rod; the other end of the second connecting rod is connected with the third connection end of the first rocker arm; one end of a third connecting rod is connected with the fourth connection end of the second rocker arm; the other end of the third connecting rod is connected with one end of a fourth connecting rod; the other end of the fourth connecting rod is connected with a tail end welding executor; one end of a sliding block is connected with the vehicle body via a moving pair; the other end of the sliding block is connected with one end of a fifth connecting rod; the other end of the fifth connecting rod is connected with one end of a sixth connecting rod; the other end of the sixth connecting rod is connected with the middle of the main arm. The multi-degree-of-freedom controllable moving type welding robot has the advantages of large working space, high rigidity, high bearing capability and high execution precision.