Screw-driven and multi-degree-of-freedom controllable mechanism type excavating mechanism

Abstract

A screw-driven and multi-degree-of-freedom controllable mechanism type excavating mechanism comprises a frame, a moving arm lifting mechanism, a bucket rod swinging mechanism, a bucket turnover mechanism and a bucket. The moving arm lifting mechanism is mainly used for controlling a moving arm to lift; the bucket rod swinging mechanism is used for controlling a bucket rod to swing around the moving arm; the bucket is mounted on the bucket rod and controlled by the bucket turnover mechanism to turn over around the bucket rod; the moving arm lifting mechanism and the bucket rod swinging mechanism are both driven by a servo motor mounted on the frame; and through screw drive, the bucket turnover mechanism is driven by the servo motor mounted on the bucket rod; and according to the invention, as the hydraulic drive in the traditional excavator is replaced with a band new connecting rod mechanism, defects of high cost, complicated maintenance and the like caused by a hydraulic system are overcome; meanwhile, as the screw drive is adopted in the bucket turnover mechanism, the excavating force of the bucket is large, the number of driving rods is small, and defects such as overlarge driving force of the driving mechanism are overcome.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a screw drive multi-degree-of-freedom controllable mechanism excavating mechanism. Background technique [0002] Excavators are the most important construction machinery in the field of construction machinery today. They mainly carry out excavation and loading operations on soil, coal, sediment, and pre-loose soil and rocks. They are widely used in various engineering construction work. Today's large Some excavators use hydraulic transmission. Hydraulic transmission has the advantages of stable transmission, small mass and volume, and large carrying capacity. Complicated and other disadvantages. [0003] With the maturity of motor technology and the improvement of control technology, the use of connecting rod transmission instead of hydraulic transmission provides a new space for the development of construction machinery. The multi-degree-of-freedom controllable mechanism e...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a screw drive multi-degree-of-freedom controllable mechanism type excavating mechanism. Firstly, the hydraulic drive of the hydraulic excavator is replaced by the connecting rod drive, so as to overcome the disadvantages of high maintenance cost and high temperature influence of the hydraulic drive excavator. At the same time, it should also ensure that the excavation mechanism has the advantages of simple structure, less number of transmission rods, small weight of connecting rod transmission, and large bucket excavation force.

Images