Auxiliary butt joint device for pipeline welding

The invention relates to the technical field of pipeline welding, in particular to a pipeline welding auxiliary butt joint device which comprises a workbench, a driving unit and two clamping alignment units arranged on the workbench, a lifting unit driven by the two clamping alignment units, and two pushing units arranged on the workbench in a penetrating mode. The pipeline butt-joint fixing device has the beneficial effects that a worker only needs to simply and stably place pipes in two fixed pipes, the clamping alignment unit can automatically achieve alignment of the two pipelines and vertical limiting (initial positioning) of the pipelines, and further the butt-joint fixing (complete fixing) effect on the pipelines can be achieved only after the pipelines are initially positioned; and the device can complete automatic resetting in the reverse rotation process of the motor, and further, initial positioning of the pipeline can be relieved only when complete limiting of the pipeline is relieved, so that ord