1、 The normal pressure range of gearbox is 1.08 ~ 1.47mpa, and the pressure is lower than 1.08mpa. It is considered that too low variable speed oil pressure will lead to insufficient driving force, weak whole machine and no starting of gears.
2、 The function of the pressure reducing valve is to adjust the higher input pressure to the specified output pressure through the pressure regulating spring, and ensure the balance of the output pressure. Once the pressure regulating spring of the pressure reducing valve is damaged, the transmission will not be able to guarantee the normal output pressure.
The pressure regulating valve controls the output pressure of the transmission through the pressure regulating valve core. If the output pressure is too low, the transmission oil pressure will be too low.
3、 It's the serious oil leakage of the pipeline oil seal.
Check the transmission oil pan to transmission pump suction line for leakage. If oil leakage is found, repair or replace the circuit.
The drive unit is used to drive the rotation of the concrete tank. It is composed of power take-off device, universal shaft, hydraulic pump, hydraulic motor, control valve, hydraulic oil tank and cooling device. The drive is still very important for the self loading mixer, so let's take a closer look.
1. General turning parts are fault parts. Grease should be filled in time, and wear condition should be checked frequently, and repaired and replaced in time. The fleet should have a spare cardan shaft assembly to ensure recovery within minutes in the event of a failure.
2. Make sure the hydraulic oil is clean. Since the working environment of the loading mixer is not good, it is necessary to prevent the dirty cement sand from entering the hydraulic system. The hydraulic oil should be changed regularly according to the manual. Once it is found that water or sand mixed in the hydraulic oil, the hydraulic system must be stopped immediately and the hydraulic oil should be replaced.
3. Ensure that the hydraulic oil cooling device is effective. Clean the hydraulic oil radiator regularly to prevent the radiator from being blocked by cement, and check whether the radiator fan works normally to prevent the hydraulic oil temperature from exceeding the standard. As long as the hydraulic components ensure that the hydraulic oil is clean, there are usually few failures, but the manufacturers have different service lives.
Generally speaking, if the driving device stops working due to fault, the concrete tank will not rotate normally, which will cause the concrete in the vehicle to be scrapped, and even the whole tank concrete will condense in the tank, resulting in the scrapping of the self loading mixer. Therefore, whether the driving device is reliable or not is a problem that must be attached great importance to in use.
This is the introduction of the weakness and driving problem of the whole machine of the charging mixer. I hope it can help you.