WORKING EQUIPMENT OF SINGLE-BUCKET EXCAVATOR Russian patent published in 2023 - IPC E02F5/10 E02F5/14 

FIELD: excavation equipment.

SUBSTANCE: invention relates to working equipment for single-bucket excavators, and can be used for excavation of pipes during the repair of main pipelines. The working equipment of a single-bucket excavator includes a boom, a handle, a bucket with hydraulic drives, a working element for excavation of pipelines and a means of orienting the working element relative to the pipeline. The working equipment is equipped with an additional handle with a drive hydraulic cylinder, an adjustable hydraulic motor, a control hydraulic cylinder, horizontal and vertical movement sensors. The additional handle is hinged and coaxially installed with the standard handle with a working body for excavation of the pipeline mounted at its lower end and made in the form of an auger cutter and a wire brush with rotation drives. The hydraulic cylinder of the drive of the additional handle is connected by hydraulic lines with a four-position hydraulic distributor, configured to communicate, in one of the positions of the spool, with the rod cavity of the control hydraulic cylinder, in the piston cavity of which an elastic element with a mechanism for regulating the elastic force is installed. The control hydraulic cylinder rod is pivotally connected to the control element of the adjustable hydraulic motor for driving the running equipment of the base machine. The displacement sensors are installed on an additional boom with the possibility of one-way communication with the pipeline, and the contacts of the vertical displacement sensor are connected by electrical lines to the coils of the electrically controlled hydraulic distributor of the boom lift drive and to light and sound signalling devices. The contacts of the lateral horizontal movement sensor are connected by electrical lines to light and sound lateral displacement indicators.

EFFECT: increased productivity and simplified workflow management.

2 cl, 4 dwg