The steeringr is also known as steering machine and direction machine. It is the most important part of the steering system. Its role is to increase the direction of the transmission of the steering wheel to the transmission mechanism and the transmission direction of the power transmission mechanism.
Commonly used steeringrs include gear shift, wormcut stroke sales and cyclic ball type.
It is the most common steward. Its basic structure is a pair of small gears and racks. When the steering shaft drives the small gear to rotate, the rack is done in a straight line. Sometimes, by the rack to directly drive the horizontal pull rod, the steering wheel can be turned. Therefore, this is the simplest steward.