When choosing the appropriate size of car tailboard, it is necessary to consider two key factors: the size of the vehicle cargo compartment and the type of cargo.

Firstly, consider the size of the vehicle cargo compartment. Measuring the width, length, and height of the cargo compartment is a fundamental step. In terms of width, the width of the tailboard should match or be slightly narrower than the width of the cargo compartment to ensure that the tailboard can be fully stored under the cargo compartment and does not extend too much beyond the sides of the vehicle when unfolded, affecting the safety and passability of the vehicle. Generally speaking, if the width of the cargo compartment is 2.5 meters, the width of the tailboard can be chosen to be around 2.3-2.4 meters.

The length of the cargo compartment determines the placement space when the tailboard is retracted. The length of the tail board after folding should not be too long to avoid occupying too much cargo space and affecting the loading capacity of the goods. For example, for a cargo compartment with a length of 4.2 meters, it is best that the length of the tailboard after folding should not exceed 0.5-0.8 meters.

The height of the cargo compartment is also important. When the tailboard is in operation, its raised height should be level with or slightly lower than the bottom of the cargo compartment to facilitate the loading and unloading of goods. If the bottom of the cargo compartment is at a higher height from the ground, it may be necessary to choose a tailboard with a higher lifting height.

Secondly, consider the type of goods. If transporting smaller and lighter goods frequently, such as express packages, small electronic devices, etc., the size of the tailboard can be relatively smaller. Small tailboards are more flexible in operation and can meet the loading and unloading needs of these goods, while reducing costs and vehicle weight.

When transporting large machinery, building materials, and other large goods, larger tailboards are required. Large tailboards can provide a wider loading and unloading platform, making it easier for forklifts and other loading and unloading equipment to enter and exit. For example, when transporting large machine tools, the width of the tailboard should be at least 2.5 meters and the length should be sufficient for a forklift to smoothly push the equipment up and down.

For some irregularly shaped goods, in addition to considering the plane size of the tailboard, attention should also be paid to whether there are sufficient protective measures at the edge of the tailboard to prevent the goods from slipping during loading and unloading. For example, when transporting circular steel pipes, protective barriers can be installed at the edge of the tailboard, and the width of the tailboard should be able to accommodate the maximum diameter of these goods.

In addition, special transportation scenarios also need to be considered. If the vehicle needs to be loaded and unloaded in narrow alleys or warehouses with limited space, the size of the tailboard should not be too large to avoid the inability to unfold the operation. In short, only by fully considering the size of the vehicle cargo compartment and the type of cargo, can the appropriate size of the car tailboard be selected to improve loading and unloading efficiency and ensure transportation safety.