Mining hydraulic excavator

Abstract

The invention discloses a mining hydraulic excavator. A frame is provided with a rotary support; a horizontal shaft is arranged on a box body above the rotary support; the horizontal shaft is provided with a rotary driving device; the front end of the horizontal shaft is connected with a rotary box; a working device is hinged to the rotary box; a large arm and a small arm respectively consist of a front section and a rear section; the rotary driving device is connected between the front section and the rear section; the rotary box and the rear section of the large arm are hinged with a hydraulic cylinder; the front section of the large arm and the rear section of the small arm are hinged with the hydraulic cylinder; the front section of the small arm and a shovel loader are hinged with the hydraulic cylinder; and a walking device is arranged below the frame. The working device can axially rotate around the horizontal shaft; rear sections of the large arm and the small arm can axially rotate around the front sections; axial movement at three positions can make the front edge of the shovel loader form a certain angle along a horizontal plane, and the mining hydraulic excavator can excavate and shovel ground, side surfaces and a ceiling. During use in a mining well, the mining hydraulic excavator can meet the requirement of clearing ground inventory, drawing in a tunnel and performing other operation, and also can perform the operation of enlarging ribs and removing ceilings in the tunnel.

Description

technical field [0001] The invention relates to a hydraulic excavator, in particular to the connection between the working device and the slewing support of the hydraulic excavator and the slewing device of the big arm and the small arm. Background technique [0002] An excavator is a construction machine that uses a bucket to shovel and strip materials from the working face and load them into a transport vehicle or unload them to a stockyard. The main objects excavated by the excavator are soil, coal, sediment, and pre-loosened soil. and rocks. The hydraulic excavator has a frame with a slewing support on the frame. The fixed side of the slewing support is connected to the frame. There is a box above the rotating side of the slewing support. The box is hinged by a boom, a small arm and a bucket. The finished working device, the lower end of the boom of the working device is hinged on the slewing support, the front end of the boom is hinged with a small arm, the front end o...

AI Technical Summary

Problems solved by technology

In the prior art, the large arm of the excavator is positioned and hinged on the slewing support. Both the large arm and the small arm are rigid arms. The large arm can only drive the small arm to move up and down in the vertical direction. When the excavator is working , the front edge of the bucket is always parallel to the horizontal ground. This kind of excavator can only excavate and shovel the objects on the ground, but cannot excavate, excavate, Shoveling and other operations

Often have the operation of removing ground inventory and pulling the bottom, splitting the state and removing the roof in the roadway as often under the mine, the excavator in the above-mentioned prior art can only meet the operations of removing the ground stock and doing the bottom pulling in the roadway, It is not possible to do side splitting and roof removal operations on the side of the roadway

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