Nine-bar two-degree-of-freedom mechanical loading mechanism

Abstract

A nine-bar two-degree-of-freedom mechanical loading mechanism is composed of a frame, a movable-arm controlled branched chain and a bucket controlled branched chain. The movable-arm controlled branched chain is controlled through a first driving bar and performs movable-arm ascending and descending operations, the bucket controlled branched chain is controlled through a second driving bar to complete overturn operation of a bucket, and the movable-arm controlled branched chain and the bucket controlled branched chain cooperate with each other to complete loading and unloading operations of the mechanical loading mechanism. Member bars of the mechanical loading mechanism are all connected through revolute pairs, so that the shortcomings that a traditional full-hydraulic loading mechanism using sliding pairs is high in price, poor in reliability, high in maintenance cost and the like are overcome; compared to other mechanical-controllable loading mechanisms, the nine-bar two-degree-of-freedom mechanical loading mechanism which is compact in structure and high in rigidity is a brand new mechanism more superior in performance by adopting principles of kinematics and dynamics, and thereby being better in reliability and dynamic stability.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a nine-rod two-degree-of-freedom mechanical loading mechanism. Background technique [0002] Loader is a kind of earthwork construction machinery widely used in construction projects such as roads, ports, mines, railways, etc. It is mainly used for shoveling bulk materials such as soil, sand and gravel, and can also be used for light shoveling of ore, hard soil, etc. Operation. Different auxiliary working devices can also be used for bulldozing, lifting and loading and unloading of other materials. Loaders are the most widely used construction machinery. With the development of social economy, loaders are more and more used in urban municipal engineering, garbage cleaning, construction engineering and other occasions. The existing loader is mainly composed of two parts: the boom lifting mechanism and the bucket turning mechanism, which are respectively controlled by the boo...

AI Technical Summary

Problems solved by technology

The efficiency of mechanical transmission is high, and the existing mechatronics technology can overcome the shortcomings of mechanical transmission, such as easy overload damage

However, most of the existing multi-degree-of-freedom controllable loading mechanisms are simply improvements to the existing hydraulic loading mechanisms. The hydraulic system in the hydraulic loading mechanism is replaced by a two-link mechanism, which lacks the dynamic performance of rod transmission and hydraulic cylinder transmission. Considering the difference, it leads to disadvantages such as poor rigidity of the mechanism, small overload resistance, poor kinematics and dynamic performance, and it is difficult to meet the needs of actual operations. Although some deficiencies in the hydraulic system have been solved, it is difficult to apply to the design and production of loaders.

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