What should be paid attention to in the test and assessment of wooden pallets

What should be paid attention to in the test and assessment of wooden pallets

The bending strength test of wooden pallets is to support the longitudinal beams at both ends of the pallet horizontally, apply concentrated loads on two specified positions on the wooden pallet panel, and measure the bending deformation of the pallet after being compressed. The specific test method is as follows: In the form of simply supported beams, the flat pallet is placed on the lower corbel, and the inner side of the pallet longitudinal beam is aligned with the two inner sides of the lower corbel. The distance between the two inner sides of the lower corbel is the supporting distance. The lower corbel for support is a rectangular empty box welded by two No. 10 channel steels, and its length should be slightly longer than the length of the pallet. On the top, put two corbels (upper corbels) for loading respectively. The two upper corbels used for loading are made of seamless steel pipes with an outer diameter of 76mm and a wall thickness of 6mm, and their length should be slightly longer than that of the pallet. The tray bending strength test can be carried out with a 3-5 ton compression testing machine. Other measuring instruments include dial indicators, moisture content measuring instruments, steel tapes, plumb weights, etc. During the test, the tray is placed on the compression testing machine at a position A concentrated load is applied on the upper corbel through the pressure plate, and the loading speed is 10kg/s. When the load reaches 1.5 times the load of the wooden pallet, the deflection of the middle part of the lower deck of the pallet is measured.