Three-section arm type excavator

Abstract

The invention discloses a three-section arm type excavator. The three-section arm type excavator comprises a truck body, a driving cab and a long arm support, wherein the long arm support comprises a first movable arm, a second movable arm, a bucket rod and a bucket, wherein one end of the first movable arm is hinged to the truck body, a first oil cylinder supplying power for the first movable arm is arranged between the first movable arm and the truck body, one end of the second movable arm is hinged to the other end of the first movable arm, and a second oil cylinder supplying power for the second movable arm is arranged between the first movable arm and the second movable arm; one end of the bucket rod is hinged to the other end of the second movable arm, a third oil cylinder supplying power for the bucket rod is arranged between the second movable arm and the bucket rod, and the bucket is hinged to the other end of the bucket rod; a fourth oil cylinder supplying power for the bucket is arranged between the bucket and the bucket rod. Activity range of the excavator is enlarged by setting the two hinged arms, the problem that the excavator is difficult to move and run and cannot reach the work site to be treated due to poor road conditions is avoided, and operation efficiency of the excavator is improved.

Description

technical field [0001] The present invention relates to an excavator. More specifically, the present invention relates to a three-section boom excavator. Background technique [0002] Excavator, also known as excavation machinery, is an earthmoving machine that uses a bucket to excavate materials above or below the bearing surface and load it into a transport vehicle or unload it to a stockyard. The materials excavated by the excavator are mainly soil, coal, silt, soil and rock after pre-loosening. The vast majority of today's excavators are hydraulic excavators, which are generally composed of working devices, upper body and lower body. The working device is a device that directly completes the excavation task. It is hinged by three parts: the boom, the stick, and the bucket. It is mainly controlled by the movement of the boom and the stick where the excavator works. For long-distance work sites, the car body needs to be moved to meet the needs of the work, but the worki...

AI Technical Summary

Problems solved by technology

The location of the excavator is mainly controlled by the activities of the boom and stick. For long-distance operation locations, the vehicle body needs to be moved to meet the work needs. However, the working environment is often poor and the excavator is difficult to move. The bucket generally excavates heavier or larger soil or rocks, which causes the work of the bucket to be hindered and the working efficiency of the excavator is reduced.

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