The present invention relates to a portable
remote control positioning device for digital X-
ray inspection of pressure pipeline welds, comprising: a synchronous belt, a positioning trolley consisting of a trolley frame, a driving bracket, a driving reduction motor, a
coupling, a driving shaft, a driving bearing, a driving wheel, a driven bracket, a driven shaft, a driven wheel bearing, a driven wheel, a tensioning bracket, a tensioning shaft, a tensioning wheel bearing, and a tensioning wheel, a flexible arm, a trolley
control unit, and a control terminal. The device uses a synchronous belt as a restraining device and also serves as a rotating track for the positioning trolley, thereby reducing the weight and size of the device and making it easier to carry on site. The flexible arm and the positioning trolley are used to connect the digital X-
ray emission source and the imaging plate together, so that after the inspection personnel fix the positioning trolley, they do not need to install and position the two sets of devices separately, thereby improving the efficiency of the first positioning. The positioning trolley is remotely controlled by a
wireless image transmission module and a
wireless remote control switch, so that the inspection personnel do not need to run back and forth to inspect other circumferential positions of the same weld, thereby greatly improving the efficiency of re-positioning.