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梯子是工厂物料储运的简单工具。优点是不用动力而可节省能源;构造简单而节省资源;使用灵活方便。符合当前节能时代的需要,因而许多先进工业国十分重视梯子的开发研究。发展趋势是轻型化、多样化、多功能及注重安全,由梯子专业厂生产,作为商品销售。举例介绍如下: 1.无扶手的小型活动安全梯(图1) 踏级2～5级,由薄壁钢管或铝合金管制成,用于向货架存取轻小物件。
Ladder is a simple tool for storage and transportation of factory materials. The advantage is that energy can be saved without power; the structure is simple and the resource is saved; the use is flexible and convenient. In line with the needs of the current energy-saving era, many advanced industrial countries attach great importance to the development and research of ladders. The trend of development is light, diversified, multi-functional and safety-oriented. It is produced by professional ladders and sold as commodities. An example of this is as follows: 1. Small arm-free mobile safety ladder (Figure 1) Stepped from Grade 2 to Grade 5, made of thin walled steel or aluminum alloy tubes for access to light and small items to shelves.