A positioning device for assembly and welding of crossbeams on forklift fork frames

Abstract

The invention provides a positioning device for assembling and welding of upper beams of a pallet fork frame of a forklift. The positioning device comprises a positioning platform. An adjustment mechanism and two positioning mechanisms are fixedly arranged on the upper end face of the positioning platform, wherein the adjustment mechanism is used for slightly adjusting the height of the T-shaped upper beam, and the positioning mechanisms are used for positioning the T-shaped beam and the L-shaped beam and slightly adjusting the height of the L-shaped upper beam. The two positioning mechanisms are symmetrically arranged at the two sides of the adjustment mechanism. According to the positioning device, mold positioning of the L-shaped and the T-shaped upper beams of the pallet fork frame is achieved, mutual switching is convenient and rapid, and the positioning requirement of upper beams with various lengths can be met. In addition, the inclination angle of the working surfaces of the upper beams can be rapidly and slightly adjusted according to the actual blank condition of a fed workpiece, the surface of the workpiece is prevented from being damaged during fine adjustment, and the surface quality of pallet fork frame products is better guaranteed.

Description

technical field [0001] The invention relates to a positioning device, in particular to a positioning device for assembly and welding of beams on a fork frame of a forklift. Background technique [0002] The upper beam part of the small 16T heavy forklift fork frame is longer in size, generally about 2400-3000mm in length. The blank of the upper beam is a T-shaped or L-shaped welded piece that is pre-tailored and welded by two plates (see figure 1 , figure 2 ), which respectively correspond to two types of fork fixing, and the blank will inevitably have certain warping or torsional deformation after assembly and welding. Therefore, when positioning and welding the fork frame, it is necessary to fine-tune its positioning according to the actual situation of the incoming parts of the upper beam to compensate the working surface of the upper beam, that is, the middle and lower plates 1 of the T-shaped welded part or the middle and lower plates of the L-shaped welded part. Th...

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Problems solved by technology

[0003] At present, the positioning of the upper beam mainly relies on riveters to mark lines, arrange positioning reference blocks, and then make fine adjustments according to the situation of each blank by padding copper or wedges, which is time-consuming and laborious, and is easy to damage the surface of the blank; and this The position and size of the positioning datum of the upper beam of the two structures are quite different, so the moving datum block needs to be replaced every time switching, resulting in low working efficiency and high working intensity

With the gradual increase of orders for repacking products, this positioning method has been difficult to meet the actual needs of production

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