DETACHABLE PRESSURE ELEMENT ASSEMBLY AND BACK HOE MECHANISM WITH SUCH ASSEMBLY Russian patent published in 2016 - IPC E02F3/40 

FIELD: construction.

SUBSTANCE: invention relates to construction machinery. Detachable pressure element assembly for construction machine contains: mounting bracket for attachment of pressure element assembly to the ground excavation mechanism of the machine, herewith to attach the pressure element assembly onto the said machine mechanism the mounting bracket retains engaged two axes of hinges, by means of which the rotation possibility is provided for the working element and a connecting lever, which is part of the lever mechanism of the working element, on the said mechanism of the machine; a pressure element hinged on the mounting bracket; a pressure element cylinder with a housing attached to the mounting bracket, and a rod extending from the front end of the cylinder housing and connected to the pressure element. Cylinder housing is connected to the mounting bracket with the ability to turn around its axis with its connecting part, which is different from the rear end part of the housing. Hinge axis, which is kept engaged by the mounting bracket and with which the working element is hinged on the said mechanism of the machine, is used as the only common hinge axis for the hinged connection of the pressure element onto the mounting bracket, while ensuring attachment of the pressure element assembly onto the ground excavation mechanism of the machine, and hinged connection of the working element with the said mechanism of the machine. Back hoe mechanism for the construction machine contains: a boom attached to the machine; a handle assembly hinged to the free end of the boom; main working element hinged to the end of the handle assembly with the ability to turn around its axis, herewith the working element control is performed by means of the cylinder using the lever mechanism having two hinged levers with the possibility of their rotation relative to each other around the axis. First lever is hinged to the handle assembly by means of the hinge axis of the first lever. Second lever is hinged to the main working element, herewith it contains the detachable pressure element assembly.

EFFECT: technical result is providing compactness of detachable pressure element assembly.

15 cl, 8 dwg