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我们在搬运工件和工具时,要跨多层台阶,为此,我们参考本刊1980年第7期上刊登《可爬楼梯的手推车》一文,并加以改进后,制作了一种新型爬楼梯小拉车,其结构如图所示。在小车轴2的两端各装一个翻轮架5和过渡轮3,在翻轮架三只互成120°角的爪上,各装一个小轮4。托架6用L20角铁围制而成焊接在小车轴2上,另外在小车轴上焊接两根钢管,组成支架7。该支架7与托架6相交成90°,用来承托搬运的零件。当拉动托架6时小轮4在地
When we carry workpieces and tools, we have to cross the multi-tiered steps. For this reason, we made a reference to our article entitled “Carts for climbing stairs” in issue No. 7 of 1980, and made improvements to create a new type of stair-climbing staircase Pull cart, its structure as shown. At the two ends of the trolley axle 2, a turret 5 and a transitional wheel 3 are respectively installed, and a small wheel 4 is respectively arranged on the claws of the turret with three angles of 120 ° each. The bracket 6 is made of L20 angle iron and welded on the axle 2 of the trolley. In addition, two steel pipes are welded on the axle of the trolley to form the bracket 7. The cradle 7 intersects the cradle 6 at a 90 ° angle for supporting the parts being handled. The wheel 4 is at ground when the carriage 6 is pulled