There are three types of excavator quick coupler, and the functions of each type are different, so the scope of their application is also different. Here is a brief introduction to these three methods.
Product classification: According to different working principles, excavator quick coupler can be divided into hydraulic drive type, mechanical type, and butter drive type.
1. Hydraulic drive type: The excavator quick coupler is installed with two sets of oil circuits to the excavator quick coupler through the oil pump sub-control valve of the excavator itself, and the demand for replacing the working parts of the excavator is achieved through the hydraulic drive cylinder.
Advantages: great power, high stability, and the simplest operation, just control the oil circuit electromagnetic switch;
Disadvantages: Adding a routing system and hydraulic cylinders requires relatively high cost, and hydraulic pipelines need to be modified.
2. Mechanical: Adjust the distance of the movable block by rotating the mechanical screw, so as to realize the ability to disassemble and install the working parts of the excavator.
Advantages: simple structure, low cost, no need to modify the pipeline, it can be used by putting on the shaft;
Disadvantages: Due to the long-term high-strength reciprocating movement of the excavator working parts, it is easy to cause the mechanical screw to be easily loosened and thread damaged. Because the working environment of the excavator is relatively harsh, it is more laborious to rotate the thread during disassembly and installation.