When it comes to deep foundation excavation, we should not be unfamiliar with it, especially in cities. For example, for the foundation of high-rise buildings, subway stations and so on, there are various excavation methods. For large-scale construction, excavators and cars are usually driven to the bottom of the pit for construction. For small-scale construction, long arm excavators are used. For smaller construction, such as subway station shaft excavation, ordinary excavators are generally not used.
In fact, the specific situation may be more complex, for example, the soil is not suitable for cars to enter the pit, or the cost of road construction is too high. As we all know, the long arm excavator is not suitable for loading, and the longer it is, the more inconvenient it is. Pit excavation and efficiency are a pair of contradictions. The effective working distance is large, the working height is high, and it can reach a long distance through the telescopic arm structure, and it can directly work over obstacles;
It has better safety performance; it is easy to replace our company's various accessories to improve the machine function. Telescopic boom is not a new tool, it has been used for decades, but it is not generally used for ordinary excavation. Now the clamshell grab is installed on the excavator with the expansion arm stick, which gives full play to the advantages of both sides. The telescopic arm can extend the bucket to a depth of about 30 meters for excavation, but it does not take up much space for lifting, which is convenient for loading.
Check and clean the hydraulic system. Generally, it is the fault of the hydraulic system that leads to the car choking. If there is any problem with the pump, and if there is any oil leakage or aging seal in the excavator, it needs to be dealt with. If the accessories of the excavator are slow in single action, slow in compound action or slow in the whole vehicle, the owner needs to find out Besides the small arm, the other movement is also slow. Most of the problems are caused by the pump,
It is recommended to deal with or replace the large hydraulic pump. If the action of the small arm is slow, it may be the problem of the multi-channel valve. In addition, the pilot should also check it and can't carry out the corresponding maintenance and replacement. The flow of the large hydraulic pump can also be adjusted to a small point to match the power of the engine;