SPMT double longitudinal train plate's transport stability and capacity - part 03

Under the condition that both the cargo weight g and the action position l satisfy the inequality, the stability requirements for 6-axis carriage plate transportation are met. The figure shows the relationship between the two variables g and l of axis 6 carriage plate under the two marshalling modes of n=3 and n=4, in which the shaded area is the allowable cargo load size and action range. It can be seen that 0 ＜│ P1-P2 │＜ 9 in the judgment criteria has a major impact on the cargo load size and scope of action.

At the same time, when the distance between the center of gravity of the goods and the front end of the vehicle plate is 3 7~4 When it is 2m, the bearing capacity of the car plate is strong, reaching more than 170t, which is the best placement position; When the distance between the center of gravity of the goods and the front end of the vehicle plate is more than 4.2 meters or less than 3.7 meters, the bearing capacity of the vehicle plate decreases sharply, which should be avoided during loading.

For the 12 axis carriage plate, when the distance between the center of gravity of the goods and the front end of the carriage plate is between 7.4~8.8m, the carriage plate has the strongest bearing capacity, which is the best place for the goods. When the center of gravity of the goods exceeds this range, the bearing capacity of the carriage plate decreases sharply; For the 18 axis carriage plate, under the three marshalling modes of n=8, n=9 and n=10, there is little difference in the allowable cargo load position and weight. The optimal range of the cargo center of gravity from the front end of the carriage plate is 11.1~5m.

Summary

In view of the poor transport stability of SPMT Double Longitudinal train plate and its sensitivity to the cargo placement position, it is concluded that the lower the center of gravity of the vehicle cargo system is, the better the transport stability is.
At the same time, the transport stability should be calculated when the height of the vehicle plate is the highest; The load-bearing capacity of the SPMT pallet is greatly affected by the placement of the goods.
The method of equally distributing points shall be adopted as far as possible, and the goods shall be placed in the middle of the pallet as far as possible.