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Question

Steering System
The direction of the automobile under way is changed by turning the front wheels with the aid of the steering system. The steering system includes a steering gear and a steering control linkage. The rotation of the steering wheel is imparted to the levers and rods of the linkage by which the steerable wheels are turned.
The steering column with the steering wheel is installed in the driver’s cad. Its upper part is se-cured to the instrument board by a clamp, and the lower end is attached through bushings to the steering gear housing.
There are two types of the steering system: manual steering system and power steering system. For the manual steering system, there are the worm and roller type and the recirculating ball and worm type.
In the worm and roller type, an hourglass-shaped worm gear is attached to the input shaft. The threads of the worm gear are meshed with the threads of a sector gear, commonly called a roller. The sec-tor gear transfers the rotary motion of the worm gear input shaft to the output shaft. The output shaft is splined to the pitman arm, which translates the rotary motion of the shaft to linear motion. Movement in the pitman arm is transmitted through a drag link to the steering arm and knuckle and thus to the wheels.
In the recirculating ball gears, the input shaft of this type of steering gear is also connected to a worm gear, but the worm gear in a recirculating ball type unit is straight. Mounted on the worm gear is a ball nut. The ball nut has interior spiral grooves that mate with the threads of the worm gear. The ball nut also has exterior gear teeth on one side. These teeth mesh with teeth on a sector gear and shaft.
In the grooves between the ball nut and the worm gear are ball bearings. The ball nut and the worm gear are ball bearings. The ball bearings allow the worm gear and ball nut to mesh and move with little friction. When the steering wheel is turned, the input shaft will rotate the worm gear. The ball bearing will transmit the turning force form the worm gear to the ball nut, causing the ball nut to move up and down the worm gear. Ball return guides are connected to each end of the ball nut grooves. These allow the ball bearing to circulate in a continuous loop.
As the ball nut moves up or down on the worm gear, it causes the sector gear to rotate which, in turn, causes the pitman arm to swivel back and forth. This motion is transferred to the steering arm and knuckle to turn the wheel.
Some automobiles are equipped with a hydraulic power steering system intended to decrease the efforts spend by the driver to turn the wheels and to damp the road jolts transmilled to the steering wheel. The booster is integrated with the steering gear.

Answer 1

转向系统
方向的汽车下的方法是改变把前轮与援助的督导制度。督导系统包括一个舵机及督导联动控制。轮换的方向盘是传授给杠杆和棒状的联系，其中转向车轮转。
转向柱与方向盘，是安装在司机的计算机辅助设计。其上部分是本身固化到仪表板由一个钳，低端是重视通过套管向转向器房屋。
有两种类型的转向系统：手动助力转向系统和动力转向系统。为手动助力转向系统，有蠕虫和滚筒式和循环球和蠕虫类型。
在蠕虫和滚筒式，一个沙漏形的蜗轮是连接到输入轴。线程的蜗轮是网状与线程的一个部门齿轮，俗称滚子。证交会- Tor的齿轮转让旋转运动的蜗轮输入轴，以输出轴。输出轴是花键向连杆臂，翻译旋转运动的轴，以直线运动。运动中的连杆臂是透过拖曳链接到督导手臂及关节，从而车轮。
在循环球齿轮，输入轴这种类型的转向器，也是连接到蜗轮，但蜗轮在一个循环球式单位是直线。安装在蜗轮是一个球螺母。球螺母已内部螺旋槽认为，伴侣与线程的蜗轮。球螺母也有外部齿轮齿数对一方。这些牙齿网格与牙齿对一个部门的齿轮和轴。
在沟槽之间的滚珠螺母和蜗轮是球轴承。球螺母和蜗轮是球轴承。该球轴承，使蜗轮和滚珠螺母，以网格和与小摩擦。当方向盘是开启的，将输入轴旋转蜗轮。该球轴承会传送车削力，形成蜗轮，以球螺母，造成球螺母动议向上和向下的蜗轮。球返回导游连接到每个月底，球螺母的凹槽。这些让球轴承分发在不断循环。
当球螺母的动作向上或向下对蜗轮，它的成因部门齿轮旋转，这反过来导致连杆臂转体回来回。这项议案是转移到督导手臂和关节，把车轮。
一些汽车都装备了液压动力转向系统的用意，以减少花费的努力，由司机把车轮和潮湿的路面震动transmilled到方向盘。助推器是结合转向器。