ATTACHMENTS OF HYDRAULIC EXCAVATOR FOR TRIMMING SLOPES OF LEDGES Russian patent published in 2021 - IPC E02F3/28 E21C41/26 

FIELD: mining industry.

SUBSTANCE: invention relates to the mining industry, namely to mining machines with an executive element of impact action, and can be used for trimming the slopes of ledges from rocks of various strength during the open development of mineral deposits. The attachments of a hydraulic excavator for trimming the slopes of ledges include a drive drum with strikers attached to it on flexible rods, a drum rotation drive, a dust screen. The attachments are provided with a body in the form of a hollow cylinder truncated parallel to the axis of the cylinder with two end caps on which the drive drum is mounted, a platform consisting of two plates having an elastic connection between them, a hinge with balancers and at least three support wheels on the specified body. In this case, one plate of the platform is rigidly connected to the body, and on its other plate the first balance beam of the hinge is fixed, the second balance beam of which is equipped with a transition plate for communication with the handle of the hydraulic excavator. These hinge balancers have an elastic connection between them.

EFFECT: expansion of the technical capabilities of the device.

3 cl, 6 dwg