HELI CQD16X1, Operation & Service Manual

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the processing of the controller will be put on the two sides of the motor through the
duty ratio of the PWM signal. Through the steering gear deceleration and chain drive
deceleration, the steering wheel will turn a stated angle. The angle degrees with 78° in
forward and 102° in backward will be controlled by the proximity switch on the
steering gearbox. The angle will be feedback and it will be shown on the meter.
4.3.1 Steering wheel assembly
Steering wheel assembly (see fig. 4-3-1) consists of a steering wheel, a steering
bracket, a bearing, a sensor and so on. The function is that it generates a signal of
angle and it doesn’t overcome the force moment of turning, so the turning is easy. The
install position has a 85
°
degree with the vertical direction. It can not be adjusted
after installment.
Figure 4-3-1 Steering wheel assembly
1. steering wheel 2. steering axle 3. spring
4. Steering bracket assembly
5. bearing
6002-RS
6. elastic coupling 7. steering angle sensor
4.3.2 Steering deceleration mechanism
The steering deceleration mechanism (figure 4-3-2) realizes the deceleration of
steering motor. The speed ratio of a pair of meshed gear in the steering gear box is 1:1.