Different from the common excavators we often see, the long arm excavator is equipped with an extension arm between the body support and the working arm, which is supported and connected by the original oil cylinder, and a working arm oil cylinder and the digging bucket oil cylinder are installed on the extension arm. Inside and outside the cab, a set of oil cylinder control system is correspondingly installed to cooperate with the expansion and contraction of the working arm oil cylinder and the digging bucket oil cylinder The operation can make the activity range of the digging bucket more than double and reach a higher, deeper and farther range. It is especially suitable for mining, wharf, storage, flood fighting and emergency rescue and special occasions. This is a breakthrough transformation of the mining machinery and has great practical value.
The structure of the long arm excavator: the long arm excavator is composed of working arm, extension arm, original oil cylinder, working arm oil cylinder, digging bucket oil cylinder, etc. its features are: at the upper end of the car body bracket, the boom is connected with an extension arm by the dynamic matching, the lower side of the extension arm is connected with the crude oil cylinder, the front end of the extension arm is connected with one end of the working arm by the pin shaft, and the working arm and the extension arm are installed One boom cylinder. There is a digging bucket at the front end of the working arm, one side of the digging bucket is connected with one end of the digging bucket cylinder through the connecting rod, and the other end of the digging bucket cylinder is connected with the lengthening boom through the pin shaft.
Advantages of long arm excavator: the long arm of excavator has the following characteristics in Construction:
1. Less labor is needed. Because of the high mechanization of long arm excavator, simple construction organization, high construction efficiency and fast project progress;
2. High quality requirements. In order to ensure the operation reliability of the extended arm in the operation process, the quality requirements of the extended arm on the excavator are relatively strict, so as to better ensure the project quality;
3. High safety factor. In the operation process, the constructors are far away from the operation target, and the operation is safe, which can reduce the risk in the construction process;
4. Practical. The working range of long arm excavator is wide. The long arm of excavator can be laid to other hard to reach places to meet various construction requirements;