Poor flatness of the top surface of the base course.The flatness of the top surface of the base course is not good, which will directly affect the flatness of the asphalt surface course.Because the asphalt surface is often very thin, if the flatness of the base course is poor, it is quite difficult to use the asphalt surface to make up. Due to the poor flatness of the base course, the thickness of asphalt on it is uneven. After the traffic is opened for a period of time, the density variation of asphalt s...
Release date：2019-10-28
When the excavator is working, its speed is about 2000.The rotation speed is related to the working mode, and the standard operation, crushing and re excavation revolutions are different. The standard general rotation speed is clearly marked on the engine nameplate, for example, the Cummins passing Yanmar is generally 2200 revolutions. The common excavators are generally high with a small speed of 2200 revolutions, while the large excavators are generally about 1950-2000 revolutions....
Release date：2019-10-28
We have summed up the main causes of the loader's failure in work. Today we will explain them to you.1. The system pressure is too low.Connect a pressure gauge with a range of 25MPa at the pressure point of the distribution valve, so that when the engine and hydraulic oil are at the normal working temperature and the engine speed is about 1800r / min, operate the distribution valve rotary bucket slide valve to make the bucket tilt back to the bottom, and the pressure displayed on the pressure gauge shall ...
Release date：2019-10-28
1. look at the appearance.First of all, when looking at an old equipment, through different light and angles, we can see the color of some paint, and the wear of the walking part of the equipment. The appearance of this piece of gun tube has not been installed, the pipeline is original, or it is installed after itself, as well as the wear of the counterweight, including the side door, counterweight, whether it has been painted. We can judge it through different light angles. The appearance problem can be ...
Release date：2019-10-28
Classification of bulldozers.(1) according to the power of bulldozer engine, it can be divided into three categories: small bulldozer (below 37 kW), medium bulldozer (37-250 kW) and large bulldozer (above 250 kW).(2) according to the running mode, the bulldozer can be divided into two types: crawler type and tyre type.The crawler bulldozer has good adhesion, large tractive force, small ground pressure ratio, strong climbing ability and can adapt to the harsh working environment.?...
Release date：2019-10-28CONTACT US
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