Safe operation of small concrete mixer must know, small concrete mixer safe operation daily maintenance mainly has three aspects: ① car body maintenance, including paint, cushion carpet, bumper, skirt, instrument panel, tire, wheel hub, windshield, chassis, etc. ② In car maintenance, including: lubrication system, fuel system, cooling system, brake system, carburetor (injector) maintenance, etc. ③ Car body renovation, including the diagnosis and treatment of deep scratches, multi material bumper repair, wheel hub (cover) hard damage repair, leather, chemical fiber material renovation, engine color renovation, etc.
Before the small concrete mixer starts to work, first check whether there is enough clean hydraulic oil in the oil tank, hydraulic pump and madar, whether the water tank is filled with water, and whether there is enough lubricating oil in each lubricating part. Start the car engine, run for a moment, and fill the air reservoir with air. Put the handle of the servo valve of the oil pump in the central position, and the mixing drum is in a static state. After everything is normal, operate the handle to make the mixing drum rotate forward and backward at low speed for 2 ~ 3 times, and check whether the hydraulic transmission system is normal.
The small concrete mixer truck drives the truck under the feeding hopper of the mixing station to align the inlet of the truck with that of the discharge hopper of the mixing station, so as to prevent the concrete from flowing outside the vehicle, causing waste and pollution to the vehicle body. Operate the handle of the mixer truck to make the mixing drum transfer 10 ~ 12R / min, and then the material can be fed to the mixing drum. When the material is loaded to the nominal stirring capacity, control the handle, adjust the engine speed to 1800r / min, make the stirring speed of the mixing cylinder be 1 ~ 3R / min, make the engine speed is the minimum, then lock the handle in the cab and drive the vehicle to the delivery place.
The maximum time allowed for the concrete mixer truck from the beginning of feeding to the completion of unloading is 1.5 hours or 300 revolutions of mixing drum (whichever is shorter). When the vehicle is loaded uphill, the rotation speed of mixing drum shall be accelerated properly. After the vehicle arrives at the delivery place, turn the unloading chute and lengthened chute to the place where the unloading is required. Before operating the handles on both sides of the tail of the vehicle, the locking plate of the control and positioning of the cab should be untied to realize the forward and reverse operation of the mixing drum tail. Then according to the site requirements of the speed of unloading.