Rotatable multiple-connecting-rod controllable excavating mechanism having metamorphic function

Abstract

Provided is a rotatable multiple-connecting-rod controllable excavating mechanism having a metamorphic function. One end of a second driving part of the excavating mechanism is connected to a machine frame through an eighth rotating pair, the other end of the second driving part is connected with one end of a third connecting rod through a ninth rotating pair, the other end of the third connecting rod is connected with one end of a second connecting rod through a tenth rotating pair, and the other end of the second connecting rod is connected to a bucket through an eleventh rotating pair. One end of the first driving part is connected to the other end of the machine frame and connected with one end of a bucket rod, and the other end of the bucket rod is connected to the bucket. One end of a large arm is connected to the machine frame through a first rotating pair, the other end of the large arm is connected with one end of a first connecting rod through a second rotating pair, the other end of the first connecting rod is connected with the second connecting rod through a third rotating pair, and the other end of the second connecting rod is connected to the third connecting rod through a fourth rotating pair. The rotatable multiple-connecting-rod controllable excavating mechanism utilizes connecting rod transmission to replace hydraulic transmission, and the shortcomings of high maintenance cost, high hydraulic element cost, large operation noise and the like of a traditional excavating machine are overcome.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a rotatable multi-link controllable excavating mechanism with metamorphic function. Background technique [0002] Excavator is a kind of common construction machinery, which is mainly used in various engineering operations. Among them, the hydraulic excavator is a type of excavator widely used at present, but the hydraulic excavator has problems such as high manufacturing cost of the hydraulic system and prone to oil leakage. However, traditional single-degree-of-freedom mechanical excavators, commonly known as "electric shovels", can only achieve simple and unchangeable trajectory output, so they cannot be used in a wide range of fields like hydraulic excavators. [0003] With the development of motor technology and the improvement of control technology, the controllable mechanism provides a broad development space for construction machinery. The multi-degree-of-freedom con...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a rotatable multi-link controllable excavating mechanism with metamorphic function. Firstly, it should have the advantages of large working space, large digging force and good force bearing of traditional hydraulic excavators, and overcome the problems of traditional hydraulic excavators. High maintenance cost, high operating noise, high cost of hydraulic components, and insufficient response. At the same time, the number of active rods should be reduced to reduce the number of controllable motors and reduce the manufacturing cost of excavating mechanisms.

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