Longitudinal beam of combined wood-plastic pallet

Abstract

The invention discloses a longitudinal beam of a combined wood-plastic pallet. The longitudinal beam comprises upper beams and lower beams, wherein the lower beams are arranged on the lower parts of the upper beams at intervals; arched forklift truck holes are formed among the lower beams; each upper beam and each lower beam respectively consist of an upper bottom plate, a lower bottom plate, and at least one middle main wall and vertical bars which are arranged between the upper bottom plate and the lower bottom plate, and have a through long structure; the vertical bars are arranged along the through long direction of the through long structure at intervals and are vertical to an axis in the through long direction of the through long structure; at least one middle main wall is arranged along the through long direction of the through long structure and is vertically crossed with the vertical bars; at least two cylinders are arranged on at least one middle main wall and arranged among adjacent vertical bars; and a vertically perforative through hole is formed in each cylinder. The longitudinal beam has the advantages of thin wall, thin bars, reasonable structure and high impact strength, bending strength, shear strength and density; weight is reduced by about 50 percent under the condition of ensuring quality, so that raw material cost is greatly reduced; and meanwhile, the required shape is formed at one time, and secondary processing is not needed, so that labor cost is greatly reduced.

Description

technical field [0001] The invention relates to a longitudinal beam of a wood-plastic pallet, in particular to a special longitudinal beam for a combined wood-plastic pallet. Background technique [0002] Wood-plastic composite material is a new generation of green and environmentally friendly materials that has been booming in the world in recent years. The first technology of wood-plastic composite material introduced from Canada is to use extrusion to produce combined wood-plastic pallets. The use and promotion of combined wood-plastic pallets as pallets has gone through more than 10 years, and has formed its own national standard "Combined Plastic-wood Flat Pallets" BB / T0020-2001 (Packaging Industry Standard of the People's Republic of China), which has been combined with wood Pallets and plastic pallets are one of the three major types of pallets. [0003] Existing combined wood-plastic pallets are composed of top decking, longitudinal beams, and bottom decking. The mo...

AI Technical Summary

Problems solved by technology

The existing structural shapes mainly include: I-beam, king-shaped beam, porous rectangular tube, and square tube, which are generally produced by extrusion. Due to the limitation of the extrusion process, they can only have the same structural shape in the length direction, resulting in In order to ensure bending resistance and impact resistance, the structure can only be designed in a relatively economical I-shaped, Wang-shaped, porous rectangular, square and other shapes, and the length direction can only be linear, resulting in thicker wall thickness in the normal direction and heavier products. higher cost

[0004] The development space of the pallet industry is very huge. Because the structural shape of the combined wood-plastic pallet is relatively thick and the cost is high, it has not been able to completely replace the wooden pallet. Therefore, research and development of the structural shape of each part of the new combined wood-plastic pallet must do

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