Mixing drum is the main component of concrete truck, which is mainly composed of cylinder, sealing pipe, blade and mixing blade. The funnel-shaped sealing pipe can ensure smooth feeding. The curved blade is conducive to the discharge performance of low slump concrete. There are holes on the blade, which can reduce the adhesion of concrete on it and improve the quality of ready mixed concrete. The whole mixing cylinder is installed above the support, supported by two supporting rollers in the front, and the mixing cylinder is provided with manhole for easy maintenance.
2. Transmission system the transmission system adopts the power take-off mode of the original vehicle engine, that is, the power is output through the chassis engine. The heavy truck HOWO 16 square mixer transmits the power to the variable plunger hydraulic pump through the universal coupling. The high-pressure oil of the hydraulic pump drives the quantitative plunger motor. The hydraulic motor transmits the dynamic force to the reducer and drives the mixing drum to rotate forward or reverse, so as to realize feed stirring For mixing and discharging, the output flange of the reducer can be deflected within the range of + 6 °, which can compensate the displacement of the axis of the mixing drum and ensure that the driving of the mixing drum is not affected by the distortion and deformation during vehicle driving.
3. Hydraulic system the hydraulic system is mainly composed of hydraulic pump, hydraulic motor, oil filter, oil tank, high-pressure oil pipe, low-pressure oil pipe, oil return pipe and filter. The hydraulic pump is equipped with a manual servo control handle, which can adjust the flow and direction of hydraulic oil, so as to control the steering and speed of the mixing drum. The forward and reverse rotation of the mixing drum can be stepless speed regulation.
The control system can be divided into linkage control or flexible shaft control according to customer requirements. In the process of normal use, due to the gradual wear of the bearing until it finally loses its working capacity and ends its service life, this natural damage is inevitable. However, if the bearing is prematurely worn or damaged due to improper engine assembly and adjustment, poor lubricating oil quality or poor service conditions, it is an early damage caused by man-made.
Early damage not only greatly reduces the service life of the bearing, but also affects the normal operation of the engine. According to the long-term experience of diesel engine maintenance, it is found that the common forms of early damage of sliding bearing are mechanical damage, bearing pitting corrosion, fatigue pitting corrosion, etc. When the engine is idling, push the control lever in the cab to the "mixing" position. At this time, the operating handle at the rear of the vehicle should also be in the "mixing" position. At this time, the cylinder turns about 4-8rpm; If the discharging speed of the mixing plant is fast, turn the operating handle to the feeding "mixing" position and accelerate it. At this time, the mixing drum rotates about 8-15rpm; During mixing, the mixing drum rotates clockwise (looking forward from the rear of the vehicle, that is, the vehicle is looking in the driving direction)