A welding method for the overall frame of a forklift cab

Abstract

The invention provides a welding method for a forklift cab overall framework. The welding method for the forklift cab overall framework includes following steps that (1) a front supporting rod and a rear support are tailor welded with a side door as a basis; (2) lower ends of the front supporting rod and the rear support are connected and shaped through a lower frame, and then tailor welded to form side frames; (3) the two side frames are erected and positioned, a hood transverse beam is placed between the two side frames to be tailor welded, and then front drawing rods and rear drawing rods are welded to form a top frame; (4) a meter rack is welded at the front end of the top frame, and a rear window is welded at the rear end of the top frame; (5) a top skin is welded at the top of the top frame to finish welding. According to the welding method for the forklift cab overall framework, parts of the cab overall framework are connected through tailor welding, steel plates in different thicknesses, shapes, compositions and performances and with different surface coatings can be tailor welded together to form a high-performance structural member, forklift body mass is reduced, the local corrosion resistance of forklift body parts is enhanced, sealing, strength and stiffness of a cab are improved, the security coefficient of the cab is improved, production costs are reduced, and the appearance is attractive.

Description

technical field [0001] The invention relates to a welding method for an integral frame of a forklift cab. Background technique [0002] At present, most of the upper cab frames of forklifts are assembled into an overall frame by connecting instrument frames, roof guards, hood beams and small window frames through bolt connections. Weld a top frame, then weld the rear brackets on both sides to the top frame, then use tooling on the working platform to connect the front support rods on both sides with the rear brackets and weld them, and finally weld the hood beam and instrument frame . In this welding process, the front support rods on both sides are welded together and then welded to the rear brackets on both sides. This welding process is easy to deform the top frame, and the welding size is not easy to grasp. The error in assembling the side frame and the side door is large. There are few welding points in the lower frame, the rigidity of the joints of process componen...

AI Technical Summary

Problems solved by technology

In this welding process, the front support rods on both sides are welded together and then welded to the rear brackets on both sides. This welding process is easy to deform the top frame, and the welding size is not easy to grasp. The error in assembling the side frame and the side door is large. The welding points of the lower frame are less, the rigidity of the joints of the process components is poor, and the welding stability is insufficient, which affects the strength of the entire cab frame, and the frame structure is complex and the production cost is high

The invention patent "Assembly Method of Double-layer Passenger Car Skeleton Body" with the notification number CN101624073B discloses a frame welding method, but there are also poor rigidity at the joints of process components and insufficient welding stability, which affects the strength of the frame, and the frame structure is complex , higher production cost

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