The steering wheel of the automatic mixer is a part of the control component and steering system of the mixer. The principle of the whole steering mechanism is to change the circular motion into the linear motion through the gear rack to drive the wheel to rotate. In physics, the steering wheel itself is a lever. The radius of the mixer steering wheel is the length of the force arm. The larger the steering wheel, the less effort.
The steering gear of mixer truck can be divided into several types. The common ones are rack and pinion steering gear and recirculating ball steering gear. Rack and pinion steering system has rapidly become a common steering system for internal mixer and small internal mixer. Its working mechanism is very simple. The gear rack set of the mixer truck is wrapped with metal pipes.
Each tooth end of the rack extends out of a metal tube and is connected together with a pull rod. The pinion is connected to the steering shaft. When the steering wheel is turned, the gear rotates to drive the rack. The tie rod at each tooth end of the mixer frame is connected to the steering arm of the steering shaft.
At present, many mixer trucks use the circulating ball steering system. The pull rod of the wheel is slightly different from the rack and pinion steering system. The pull rod of the mixing wheel is slightly different from the gear rack steering system. The power steering principle of the recirculating ball system is similar to that of the rack and pinion system. The auxiliary power is also provided by injecting high-pressure liquid into one side of the metal block.
In addition, in order to prolong the service life of the mixer truck, it is necessary to do several things: when the service life of the bearing ends, the vibration and noise of the motor will increase significantly. When the radial clearance of the bearing reaches the following values, the bearing should be replaced. The operating environment should always be kept dry, the motor surface should be kept clean, and the air inlet should not be obstructed by dust, fiber, etc. The motor shall be well lubricated during operation.
When replacing the winding of the automatic mixer truck, the form, size, number of turns, wire gauge, etc. of the original winding must be recorded. When these data are lost, they should be obtained from the manufacturer, and the original design winding should be changed at will, which often deteriorates the performance of one or more items of the motor, or even can not be used. When the thermal protection of the motor acts continuously, it is necessary to find out whether the fault is from the motor or overload or the setting value of the protection device is too low. The motor can be put into operation only after the fault is eliminated. When disassembling the motor, take out the rotor from the shaft extension end or non extension end.
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