Longitudinal beam assembling and welding tool of excavator

The utility model relates to the technical field of excavators, and discloses an excavator longitudinal beam installing and welding tool which comprises a support, guide rails are fixedly installed on the two sides of the support, sliding grooves are formed in the tops of the two guide rails, sliding blocks are installed in the two sliding grooves in a sliding mode, and a filter box is fixedly installed at the bottom of the support. Telescopic pipes are arranged on the two sliding blocks, one ends of the two telescopic pipes penetrate through the tops of the sliding blocks, and the other ends of the two telescopic pipes communicate with one side of a filtering box; harmful gas generated during welding is sucked away through the filter box and the telescopic pipe, if the harmful gas is not removed, the physical health of workers can be seriously influenced, smoke dust and harmful gas generated in the welding process are removed, the environment can be greatly protected, the indoor air quality is improved, and