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.

二、减压阀的功能是通过压力调节弹簧将较高的输入压力调节到规定的输出压力，并确保输出压力的平衡。一旦减压阀的压力调节弹簧损坏，变速箱将不能保证正常的输出压力。

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.

压力调节阀通过压力调节阀芯控制变速器的输出压力。如果输出压力太小，变速箱油压将太低。

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.

三、是管道油封严重漏油。

3、 It's the serious oil leakage of the pipeline oil seal.

检查变速箱油盘到变速箱泵吸入管路是否泄漏。如果发现漏油，请修理或更换新线路。

Check the transmission oil pan to transmission pump suction line for leakage. If oil leakage is found, repair or replace the circuit.

驱动装置用于驱动混凝土储罐的旋转。它由动力输出装置，万向轴，液压泵，液压马达，控制阀，液压油箱和冷却装置组成。对于自上料搅拌车，驱动器仍然非常重要，所以让我们仔细看看。

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.通用车削部件是故障部件。应及时填充润滑脂，并经常检查磨损情况，及时修理和更换。车队应该有一个备用的万向轴组件，以确保在发生故障时能够在几分钟内恢复。

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.确保液压油清洁。自上料搅拌车的工作环境不好，必须防止脏水泥砂进入液压系统。应根据手册的要求定期更换液压油。一旦检查发现水或沙子混入液压油中，就必须立即停止液压系统并更换液压油。

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.确保液压油冷却装置有效。定期清洗液压油散热器，避免散热器被水泥堵住，检查散热器电风扇是否正常运行，防止液压油温度超标。只要液压部件确保液压油清洁，通常几乎没有故障，但制造商具有不同的使用寿命。

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.

一般来说，如果驱动装置由于故障停止工作，混凝土储罐将不能正常旋转，这将导致车辆中的混凝土报废，甚整个罐体混凝土将在罐内冷凝，造成自上料搅拌车要报废。因此，驱动装置是否可靠是在使用中必须高度重视的问题。

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.

自上料搅拌车整机无力的弱点和驱动问题介绍就是这样了，希望对你有帮助。

This is the introduction of the weakness and driving problem of the whole machine of the charging mixer. I hope it can help you.