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本文利用相对曲柄概念对Grashof曲柄存在理论进行引伸,写成定理形式,认为:若最短杆与最长杆长度之和小于或等于其他两杆长度之和,则最短杆与其他任何一杆均能互为曲柄。使它适应于包含移动副在内的所有平面四杆机构。
In this paper, we use the concept of relative crank to extend the existing theory of Grashof crank and write it into the theorem form that: if the sum of the length of the shortest lever and the maximum length is less than or equal to the sum of the other two lengths, the shortest one can reciprocate with each other For the crank. Adapt it to all planar four-bar mechanisms including moving pairs.