Two-degree-of-freedom single hinged profiling mechanism

Abstract

The invention discloses a two-degree-of-freedom single hinged profiling mechanism, belonging to the technical field of agricultural machinery. In the invention, a single hinged joint and a piston gas-liquid energy accumulator are connected with a profiling part through a hinged front rack, and one end of a piston rod is provided with an upper profiling overtravel-limit switch and a lower profiling overtravel-limit switch for a hydraulic control system; when the profiling part makes profiling motion around the single hinged joint due to external force, the piston rod makes stretching motion, corresponding fore change is generated at the same time, and the force balance of the profiling mechanism is rebuilt; when the profiling quantity is excessive, the hydraulic control system and a serialgas-liquid energy accumulator group are utilized to change the stretching direction of the piston rod, thereby changing the profiling tendency; and the piston rod also can be locked on a fixed position, so that the two-degree-of-freedom mechanism is converted into a rigid triangular mechanism, thereby facilitating the transportation and the transfer of the profiling part. The mechanism solves theproblem of unstable operation quality of the traditional single hinged mechanism, has the advantages of compact structure, controllable profiling, convenient adjustment, strong adaptability and high automaticity, can realize remote control, and is beneficial to the design and the exploitation of agricultural machinery products.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a double-degree-of-freedom single-hinge profiling mechanism. Background technique [0002] The single hinge profiling mechanism is a common profiling mechanism on agricultural machinery. It has the advantages of simple structure and convenient installation, but it is not easy to ensure the profiling consistency of the working parts. It is mostly used in cultivating machinery and rarely used in sowing machinery. . [0003] In recent years, with the improvement of the level of agricultural machinery and equipment and the promotion of conservation tillage technology, various large-scale and super-large joint-operation agricultural machinery and equipment have emerged continuously, with complex mechanical structures and diverse types of operations. Rotary tillage seeders, combined soil preparation machines and other joint operation tools require compact ma...

AI Technical Summary

Problems solved by technology

The commonly used parallel four-bar linkage profiling mechanism has a simple structure, but it is insufficient in terms of transportation load-bearing capacity and longitudinal dimension; the use of rigid connection mechanism can ensure the safety of the whole machine transportation and the strength of the components, but if the working ground has large undulations, it cannot be guaranteed Profile Consistency

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