Multi-degree-of-freedom metamorphism controllable excavation mechanism comprising parallelogram bucket maintaining mechanism

Abstract

The invention discloses a multi-degree-of-freedom metamorphism controllable excavation mechanism comprising a parallelogram bucket maintaining mechanism. The multi-degree-of-freedom metamorphism controllable excavation mechanism comprises a rack, a big arm swing mechanism, a bucket rod raising and dropping mechanism, a bucket overturning mechanism and two electromagnetic locking devices. The big arm swing mechanism comprises a big arm and a swing mechanism. The bucket rod raising and dropping mechanism comprises a bucket rod and a raising and dropping mechanism. The bucket overturning mechanism comprises a bucket and an overturning mechanism. The electromagnetic locking devices are mounted on a revolute pair and achieve the active metamorphism function by electromagnetically locking the revolute pair. According to the multi-degree-of-freedom metamorphism controllable excavation mechanism comprising the parallelogram bucket maintaining mechanism, a link transmission mechanism is used for replacing traditional hydraulic transmission, so the defects that a hydraulic system of a hydraulic excavator is complex, prone to oil leakage and the like can be overcome; due to the fact that the electromagnetic locking devices are mounted on the revolute pair, active metamorphism can be realized according to different working conditions; the flexibility of the hydraulic excavator is obtained, and excavation operation at three degrees of freedom can be achieved just through two driving rods, so that the manufacturing cost of the excavation mechanism is lowered, and the excavation mechanism is suitable for manufacturing various excavators and other engineering machinery.

Description

Technical field [0001] The invention relates to the field of engineering machinery, in particular to a multi-degree-of-freedom metamorphic controllable excavating mechanism containing a parallelogram bucket holding mechanism. Background technique [0002] Excavator is a common construction machinery, mainly used in various earthwork constructions. Among them, hydraulic excavators are the most widely used type of excavators, but the manufacturing cost of the hydraulic system is high, and problems such as oil leakage are prone to occur. These are thorny problems that exist for a long time in hydraulic excavators. The traditional single-degree-of-freedom mechanical excavator, commonly known as "electric shovel", can only achieve simple and unchangeable trajectory output, so it 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 devel...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-degree-of-freedom metamorphic controllable excavating mechanism containing a parallelogram bucket holding mechanism. First, it should have the advantages of large working space, large digging force, and good force of the traditional hydraulic excavator, and overcome the traditional hydraulic excavator. There are disadvantages such as 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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