WM 3030 welding column and boom is composed of column (including lifting device, sliding carriage, anti falling device and balance weight device), boom (including rack and boom driving device), etc. Welding column and boom are all welding structure, with good rigidity, and removed stress after welding, then plane and rubbing, thus ensure the high precision and wearing resistance of guide rail. Material of guide rail is 16Mn, and through heat refining, this can extend the service time of guide rail. Boom is fixed on the guide base, and uses the frequency stepless speed regulation; torque is big under a low speed. It can expansion along the sliding base, its expansion adopts AC motor driving reducer and then drive by rack and pinion. Guide base is fixed on column post, and can elevating in uniform speed along the post. There is anti falling device on boom, it uses bar and pawl device, when the elevating chain broken, the pawl can insert into the bar quickly under the action of spring to prevent boom falling down. There are fence and inspection platform on elevating motor reducer place, so that user can inspect and add oil easily. There is cover on ladder above ground 2 meters to protect workers.
- Effective stroke of column： 3000mm
- Elevating speed of boom： 1000mm/min
- Effective stroke of Boom： 3000mm
- Boom expansion speed（stepless adjusting）：0.12-1.2m/min
- Vertical rotating angle： ±180°(motorized )
- Motorized cross adjusting of cross front-end： 100×100mm
- Front end loading of boom： 250kg