Dual-metamorphism multi-closed-chain connecting rod controllable excavating mechanism with 4R-5R big arm tilting mechanism

Abstract

A dual-metamorphism multi-closed-chain connecting rod controllable excavating mechanism with a 4R-5R big arm tilting mechanism comprises a rack, a big arm tilting mechanism, a bucket arm lifting mechanism, a bucket turnover mechanism and electromagnetic locking devices. The big arm tilting mechanism comprises a big arm and a tilting mechanism, the bucket arm lifting mechanism comprises a bucket arm and a lifting mechanism, the bucket turnover mechanism comprises a bucket and a turnover mechanism, the electromagnetic locking devices are arranged on revolute pairs, and the active metamorphism function is achieved through electromagnetic locking to the revolute pairs. According to the dual-metamorphism multi-closed-chain connecting rod controllable excavating mechanism with the 4R-5R big arm tilting mechanism, a connecting rod drive mechanism is adopted to replace traditional hydraulic drive, the defect that a hydraulic system of a hydraulic excavator is complex and easy to leak oil is overcome. Due to the fact that the electromagnetic locking devices are arranged on the revolute pairs, the active metamorphism is achieved according to different operating conditions, the flexibility of the hydraulic excavator is not only achieved, but also three freedom degree excavating operation is achieved through using two driving levers, the excavating mechanism cost is reduced, and the manufacture of various excavators and other engineering machinery is applicable.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a double variable cell multi-closed chain link controllable excavating mechanism including a 4R-5R boom swing mechanism. Background technique [0002] Excavator is a common construction machine, which is mainly used in various earthwork constructions. Among them, the hydraulic excavator is the most widely used type of excavator, but the manufacturing cost of the hydraulic system is high, and problems such as oil leakage are prone to occur. These are long-standing thorny problems of hydraulic excavators. 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 broa...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a double-variable multi-closed-chain link controllable excavation mechanism including a 4R-5R boom swing mechanism, which should firstly have the advantages of large working space, large digging force, and good force bearing of traditional hydraulic excavators. , to overcome the disadvantages of traditional hydraulic excavators such as high maintenance cost, high operating noise, high cost of hydraulic components, and insufficient response.

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