The structure of high-front shovel consists of the work jib, extension jib, crude oil cylinder, working jib oil cylinder, digging bucket oil cylinder and other parts.  In the upper body bucket, clearance fit with an extension jib, and under onside of the extension jib connected to the cruel oil cylinder. The front of the extension jib is connected to the clearance fit of the working arm by axis pin, and there armed with a working jib oil cylinder between working jib and extension jib. In the front of the working jib, there is an excavator bucket which is connected to one side of the excavator bucket oil cylinder through connecting rod. The other side of the excavator bucket oil cylinder is movable fitly connected with the extension jib through connecting rod.
The advantages of high-front shovel are as follow. For the high degree of mechanization of high-front shovel, it has simple construction organization with high construction efficiency and fast project progress. In order to ensure the reliability of extension jib during the operation, the extension jib requires high quality of excavator to better guarantee the quality of the construction project. In the progress of operation, operators should keep as far as possible away from the target to make sure safe work and reduce the risk and danger of the construction process. High-front shovel can operate in a wide range and the extension jib can extend to meet various construction requirements.