A rotating mechanism of excavator working arm

Abstract

The invention discloses a rotating mechanism for a working arm of an excavator, and belongs to the technical field of engineering mechanisms. The mechanism comprises a slewing support of which an inner ring is connected to a rotating rack through a bolt, wherein the rotating rack is used for fixing the manipulator, and the rotating rack is arranged in front of the slewing support; an outer ring of the slewing support is connected to a connecting rack through the bolt, and the connecting rack is fixedly connected to an excavator body; the connecting rack is arranged at the back of the slewing support; a speed reducer is fixed to the connecting rack, and an output shaft of the speed reducer is fixedly connected to the inner ring of the slewing support through a driving gear; a limiting block is fixed to the circumference of the rotating rack; a limiting plate is fixedly arranged on the connecting rack, and the end part of the limiting plate extends to be above the rotating rack; the limiting plate is arranged on a moving track of the limiting block which rotates along with the rotating rack. The rotating mechanism is simple in structure, and can bear the axial force, radial force and large tilting torque at the same time; meanwhile, the limiting device is provided, so that 360-degree rotating is avoided, and as a result, oil pipelines can be avoided intertwining.

Description

technical field [0001] The invention relates to a rotating mechanism, in particular to a rotating mechanism of an excavator working arm, and belongs to the technical field of engineering machinery. Background technique [0002] Under the existing technical conditions of mining equipment, the working arm rotation of rock roadway, semi-coal rock roadway excavation equipment and roadway repair equipment mainly adopts several traditional rotation methods such as worm gear rotation, rotary swing cylinder rotation, and pinion and rack rotation. With the development of coal mine construction, the excavation force required for excavation and repair equipment is increasing, but the above rotation methods cannot withstand large overturning forces, which limits the excavation capacity of the working arm and restricts mining machinery and equipment. performance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a rotating mec...

AI Technical Summary

Problems solved by technology

With the development of coal mine construction, the excavation force required for excavation and repair equipment is increasing, but the above rotation methods cannot withstand large overturning forces, which limits the excavation capacity of the working arm and restricts mining machinery and equipment. performance

Images