自上料搅拌机是由底盘和上装组成的，其中上装重要的除了搅拌罐就是液压系统了，而液压系统中液压油泵是比较精细的部件，所以在搅拌机的操作过程中要非常注意液压油泵的使用和维护。

The self loading mixer is composed of a chassis and a top loading. The top loading is important except that the mixing tank is the hydraulic system, and the hydraulic oil pump in the hydraulic system is a relatively fine component. Therefore, great attention should be paid to the use and maintenance of the hydraulic oil pump during the operation of the mixer.

液压油泵的工作原理：当通过操纵杆装置使变量杆向左转动，油泵就开始从油口排油，经过高压油管进入马达，马达转动，流经马达的油变成低压油，再经过另一高压油管从另一个油口流回油泵。变量杆转动角度越大，油泵每转排出的油量就会越多，马达的转速就越高。当操纵变量杆使其向右转动，这时压力油就从另一口排出，马达旋向改变，低压油从油口流回油泵。

Working principle of hydraulic oil pump: when the variable lever is rotated to the left through the control lever device, the oil pump starts to drain oil from the oil port, enters the motor through the high-pressure oil pipe, the motor rotates, the oil flowing through the motor becomes low-pressure oil, and then flows back to the oil pump from another oil port through another high-pressure oil pipe. The larger the rotation angle of the variable lever, the more oil will be discharged by the oil pump per revolution, and the higher the speed of the motor. When the variable lever is operated to rotate to the right, the pressure oil is discharged from the other port, the rotation direction of the motor changes, and the low-pressure oil flows back to the oil pump from the oil port.

马达的转动带动了减速机，从而使搅拌机的搅拌罐能在一定转速范围内无极变速且有两种旋向。其它液压油泵原理也是如此。要使液压油泵高效、无故障的工作，就要在日常使用中加强维护保养，并按说明书进行操作，按要求及时的对液压油和辅助装置进行更换。

The rotation of the motor drives the reducer, so that the mixing tank of the mixer can be infinitely variable within a certain speed range and has two rotation directions. The principle of other hydraulic oil pumps is the same. In order to make the hydraulic oil pump work efficiently and trouble free, it is necessary to strengthen the maintenance in daily use, operate according to the instructions, and timely replace the hydraulic oil and auxiliary devices as required.

液压油更换需要注意一下几点：

Pay attention to the following points when changing hydraulic oil:

1.使用性能稳定符合要求的液压油，好不要使用经过过滤和沉淀的液压油。

1. use hydraulic oil with stable performance that meets the requirements. Do not use filtered and precipitated hydraulic oil.

2.滤油器好使用过滤精度为10的。

2. the oil filter is easy to use with a filtering accuracy of 10.

3.主系统、泵、马达的壳体在启动之前要充满液压油。

3. the shells of the main system, pump and motor shall be filled with hydraulic oil before starting.

4.液压油和滤芯要按说明书及时更换。

4. the hydraulic oil and filter element shall be replaced in time according to the instructions.

自上料搅拌机每次开始工作之前，请检查液压油如发现箱和减速机油窗口的油位标尺和油品颜色，并根据情况补油或者更换。

Before starting work each time, please check the hydraulic oil. If you find the oil level gauge and oil color of the oil window of the gearbox and reducer, replenish the oil or replace it according to the situation.

搅拌机工作时要注意检查液压油箱滤芯及真空表，防止滤芯由于油质过差造成回游阻力过大，如发现阻力过大，应抽出滤芯进行更换，甚至更换液压油。

When the mixer is working, pay attention to check the filter element and vacuum gauge of the hydraulic oil tank to prevent the filter element from having too much return resistance due to poor oil quality. If the resistance is too large, pull out the filter element for replacement, or even replace the hydraulic oil.

经常检查油泵和马达，检查其连接部位是不是有液压油漏出，接口是否松动（特别是液压泵的吸油管路容易松动进气，导致系统产生噪音和油箱呼吸口向外排油）

Frequently check the oil pump and motor, check whether there is hydraulic oil leakage at the connecting part, and whether the interface is loose (especially the oil suction pipe of the hydraulic pump is easy to loosen and air intake, resulting in system noise and oil discharge from the breathing port of the oil tank)

如果发现液压系统有故障，如噪声加大，但是没有金属撞击的声音，则需要检查油品，温度。必要时停机开会服务站检查。如果有金属撞击声音，请立即报修；如果发现有更严重问题，刚巧又有混凝土在机里，一定要及时报修，或者找两根高压应急油管，接到别的机上.

If the hydraulic system is found to be faulty, such as the noise is increased, but there is no sound of metal impact, it is necessary to check the oil and temperature. Shut down the meeting service station for inspection if necessary. If there is metal impact sound, please report for repair immediately; If you find a more serious problem, and it happens that there is concrete in the machine, you must report for repair in time, or find two high-pressure emergency oil pipes and connect them to other machines

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