一、问题的提出 在目前我国林业索道的牵引力计算中,大多数采用苏联和日本的算法。在文献中一种假设承载索在跑车车轮两侧的张力相等而推出升角,另一种认为跑车轨迹线的切线倾角即为升角(见[3]第177页)。然后分别按其升角再算出牵引力。对索道牵 First, the issue put forward At present, the calculation of the traction of our country’s cableway, the majority of the Soviet Union and Japan’s algorithm. In the literature, one hypothesis is that the tension of load-carrying cables on both sides of the wheel of a sports car is the same as that of the sports car, and that the angle of tangent of the sports car track is the angle of elevation (see [3], p. 177). Then, according to their angle of rise and then calculate the traction. On the ropeway