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施工用小车梯(图1)的构造和特点如下:梯后腿后外侧下方约80～100mm处,装一对胶轮(轴),胶轮低点与四腿脚不在一个平面。当梯四腿落地时,因梯身重量远大于轮重,两轮被撬起(不着地),此时,胶轮低点距地面约为10～16mm,小车梯能站稳,不会发生滑动;移动时,抬起手把,梯身先绕后脚后仰,待仰到两轮着地、四腿全悬空时,梯身重量大部已移至轮轴。
The structure and features of the construction ladder (Picture 1) are as follows: The rear hind legs are about 80 ~ 100mm below the posterior lateral side, equipped with a pair of rubber wheels (shafts). The rubber tire low point and the four-legged legs are not in a plane. When the ladder legs landing, because of the ladder body weight is much greater than the weight of the wheel, the two were prized (not in the ground), this time, the rubber tire low from the ground about 10 ~ 16mm, the small car ladder can stand, will not happen Sliding; move, lift the handle, the ladder behind the first step back, to be up to two rounds of landing, four-legged full suspension, most of the ladder body weight has been moved to the wheel shaft.