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原苏联生产的ДT-75MЛ拖拉机采用单级行星式转向机构,其结构见右图。在后桥中央传动室内安装有两套行星齿轮机构,其主动件为三合一的内齿圈1,外面固定着中央传动大锥形齿轮5,太阳齿轮8是固定件,它的伸出端有一行星机构制动器2,用以制动太阳齿轮,行星架7是从动件,它与半轴4相连接,半轴上有一停车制动器3。拖拉机直线行驶时,行星机构制动器2为抱紧状态,停车制动器3分为离状态,从动件传递全部扭矩。当行星机构制动器2逐渐放松而停车制动器逐渐抱紧
The original Soviet-made ДT-75MЛ tractor uses a single-stage planetary steering mechanism, the structure shown on the right. In the rear axle central transmission room installed two sets of planetary gear mechanism, the active part of the three-in-one ring gear 1, outside the fixed center drive large bevel gear 5, the sun gear 8 is a fixed member, its projecting end There is a planetary brake 2 to brake the sun gear. The carrier 7 is a driven member which is connected to the semi-axle 4 and has a parking brake 3 on the semi-axle. When the tractor travels in a straight line, the planetary mechanism brake 2 is in a tight state, the parking brake 3 is in a separated state, and the follower transmits all the torques. When the planetary gear brake 2 gradually relax and parking brake gradually tight