Excavator Arm Having Rotation Device

Abstract

The present invention relates to an excavator arm having a rotation device, and to an arm connected to a boom of an excavator so as to be operated by an arm cylinder, connected with a bucket for excavation at the lower end portion thereof by a quick coupler interposed therebetween, and provided with a bucket cylinder for operating the bucket at the front side thereof, wherein the arm is divided into an upper arm and a lower arm and the rotation device is fixedly provided between the upper arm and the lower arm so as to selectively rotate the lower arm at a predetermined angle and to selectively rotate the lower arm at a predetermined angle while enabling the lower arm to bidirectionally rotate at 360 degrees or more.

Description

technical field [0001] The present invention relates to an arm for an excavator having a rotating device, and more particularly to an arm for an excavator having a rotating device fixed between an upper arm and a lower arm, in particular, the lower arm The rod can be rotated more than 360 degrees in both directions, and can be used in a fixed state after rotating a predetermined angle, and the digging direction can be easily changed to the forward digging direction and the reverse digging direction without separating and reinstalling the bucket. Simply change from the forward or reverse direction of excavation to the direction inclined at a predetermined angle, so there is no need to separate and reinstall the bucket, and the efficiency of excavation can be significantly improved, and at the same time, the worker's Fatigue is minimized, thereby improving work efficiency. Background technique [0002] Generally, an excavator for construction equipment includes: a body mounte...

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Problems solved by technology

[0004] However, in the excavator based on the prior art as described above, the arm is operated only in the front-rear direction by the boom cylinder at the end of the boom, and cannot be rotated, and the digging direction of the bucket is switched from the front. , that is, in the forward excavation operation (hereinafter referred to as the forward excavation operation direction) as the excavator side, the excavation direction of the bucket is switched from the excavator side to the reverse excavation operation (hereinafter referred to as the reverse excavation operation) direction), after the excavation work is terminated, the installation direction of the bucket is switched by 180 degrees from the forward digging work direction to the reverse digging work direction. installation, excavation work cannot be carried out simply

[0005] In other words, the conventional excavator arm cannot rotate the bucket with respect to the direction of the excavation work. As time is required for the separation and reassembly of the bucket, when the direction of the excavation work is changed, the separation and reassembly of the bucket will occur. time, reducing the efficiency of excavation operations

[0006] Furthermore, after the bucket is attached to the conventional excavator arm as described above, the digging direction of the bucket cannot be changed without detaching the bucket and reinstalling it, and the digging direction of the bucket is limited to the forward digging operation. direction and reverse direction of excavation work, when fan-shaped excavation work is required, the rotating tower of the excavator needs to be rotated or the excavator itself needs to be maneuvered. The efficiency of excavation operations is greatly reduced

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