If our automatic mixer is out of operation, how to solve it? The specific method, we in the following automatic mixer small make up for you a detailed introduction.
After confirming that the oil circuit is smooth and there is no air in the diesel engine supply system, the cover plate of the oil pump can be disassembled, the control handle can be moved, and the pull rod of the oil pump can be pulled to see whether the pull rod is flexible and whether the plunger spring is broken. Under the condition that the pull rod of the automatic loading concrete mixer truck is flexible and the plunger spring is not broken, the diesel engine can be started to run at a medium speed for 10 minutes. If there is still a fire break phenomenon, a copper hammer can be used to gently tap the big nut of the oil delivery pump, and listen to the noise of the diesel engine at the same time. If the sound is abnormal, it indicates that the piston and push rod of the oil delivery pump are jammed and repaired or replaced.
Remove the fuel injector assembly and rotate the crankshaft for several turns, which means that there are cracks or sand holes in the cylinder head and cylinder block. In this case, you can explain to the user or report to the automatic feeding mixer company. After the low-pressure oil flow is smooth, the air in the oil circuit can be removed by hand pump, and the air release screw at the pump head can be opened until there is no bubble.
The oil nozzle is not atomized, the plunger spring and spring seat of the oil pump are broken, stuck and do not work, or there is water in the diesel oil. Remove the nozzle assembly to check the opening pressure and atomization. If the nozzle assembly is normal, the user can fill the pot with clean diesel oil and conduct the test with the oil way side connection method. Turn on the oil tank switch of the automatic feeding mixer, remove the oil inlet pipe of the oil delivery pump and check the oil flow. If the oil flow is fast, it indicates that it is normal. If the oil flow is intermittent, continue to check the oil circuit.
The flexible and correct operation methods of automatic mixer can be summarized as: one light, two stable, three leave, four diligence, five coordination and six prohibitions.
One light: during the operation of the automatic mixer, the heel of the truck should be close to the floor of the cab, and the foot plate should be parallel to the accelerator pedal, and the fuel pedal should be pressed gently.
Second stability: in the operation of the automatic mixer, the throttle should always be stable. Generally, the throttle opening is about 70%.
Three separation: during the operation of the automatic mixer, the foot plate should be separated from the brake pedal and placed flat on the cab floor, and never step on the brake pedal. The automatic loading mixer often works on uneven construction site. If the foot is always on the brake pedal, the body will move up and down, which will cause the driver to step on the brake pedal carelessly. In general, we should control the engine condition and shift gear by controlling the throttle deceleration. This not only avoids the overheat of the braking system caused by frequent braking, but also brings convenience for the rapid speed-up of the automatic feeding mixer.
Four frequently: in the operation of automatic mixer truck, especially in shoveling operation, the bucket shall be filled with materials by pulling the lifting and rotating control lever in a cycle under the condition that the throttle is stable. The cyclic pulling of lifting and bucket turning control levers is called "diligence". This process is very important and has a great impact on fuel consumption.
Five coordination: coordination is the organic coordination of lifting and bucket control lever. The general digging process of automatic mixer truck is to place the bucket on the ground and drive to the pile smoothly. When the bucket is parallel shoveling to the material pile, the principle of lifting the arm first and then collecting the bucket should be followed. This can effectively avoid the resistance at the bottom of the bucket, so as to give full play to the maximum digging force.
Six prohibitions: first of all, it is strictly forbidden to skid the tires. When an automatic mixer truck is working, when it encounters resistance and is fierce, the phenomenon of tire skidding often occurs at the fuel door. This phenomenon is usually caused by improper operation of the driver, which increases fuel consumption and damages the tire. Secondly, the rear wheels are strictly prohibited from warping. Due to the large digging force of the automatic loading mixer, the driver usually digs the solid original soil and stone hill, if the operation is not correct, the two rear wheels will be prone to rise and leave the ground.
The landing inertia of this kind of lifting action will cause the blade of the bucket to fracture and the bucket to deform; when the rear wheel is very high, it is easy to cause the welding joint cracking of the front and rear frame, and even the plate fracture. Third, it is forbidden to hit the pile. When excavating common materials, the automatic mixer can operate in gear II. It is strictly forbidden to make inertial impact to the material pile at the gear position above II. The correct method should be that when the bucket is close to the pile, it should timely change the gear to I gear to complete a shoveling process.、