FRONT-END LOADER Russian patent published in 2003 - IPC

FIELD: materials handling equipment. SUBSTANCE: invention relates to load-handling machinery and it can be used for digging, transportation and loading and unloading of loose loads. Proposed front-end loader has boom with bucket hinge-secured on frame and boom turning and bucket control hydraulic system. Bucket is provided with upper and lower hinge joints connecting bucket to boom. Boom turning and bucket control system includes three-section telescopic double-acting hydraulic cylinder with outer and inner sleeves and rod with piston forming three working spaces. One end of outer sleeve of hydraulic cylinder is hinge-connected through eye on frame. Inner sleeve of hydraulic cylinder is provided with trunnion. Slots made in boom form slotted-link mechanism when engaging with trunnion. Rod of hydraulic cylinder is connected through eye with bucket upper hinge joint. EFFECT: improved reliability in operation, simplified design of front-end loader. 2 dwg