棚车车顶板是胶合板。一张胶合板的尺寸为5.5×1200×2400毫米,重量为8.7公斤,须安装(或拆卸)54个木螺钉。以往在更换车顶板时,由两个人一边操作螺丝刀,一边用手托着胶合板进行工作,工作效率既低又不安全。为此制作了车顶板支持架。这个支架是由托架1(图1)、支承钢管2和调整手轮3等组成。拆卸时使用方法如下: 1.把支架放在稳定的地方; 2.把托架1置于支承钢管2上; Box roof car is plywood. A plywood size 5.5 × 1200 × 2400 mm, weight 8.7 kg, to be installed (or removed) 54 wood screws. In the past in the replacement of the roof plate, by two people while operating a screwdriver, while holding the plywood with their hands to work, work efficiency is low and unsafe. For this purpose, a roof support was made. This bracket is composed of a bracket 1 (Figure 1), support pipe 2 and adjust the hand wheel 3 and other components. Disassembly method is as follows: 1. The stent on a stable place; 2. The bracket 1 placed on the support tube 2;