A hydraulic suspension device with double adjustment function

Abstract

The invention discloses a hydraulic suspension device with double adjustment functions, which comprises a fine adjustment hydraulic cylinder, a movable box body, a coarse adjustment hydraulic cylinder, a support base, a fixed box body, an upper pull rod, an intermediate rod, a connecting rod, and a load hanger , pull down rod, one end of the fine adjustment hydraulic cylinder is installed on the support base, and the other end is installed on the movable box; the coarse adjustment hydraulic cylinder is installed on the upper end of the movable box, and the movable box is installed inside the fixed box , the fixed box is fixed on the support base; the upper pull rod is installed on the top of the movable box, and the connecting rod is installed between the upper pull rod and the lower rod; the load hanger is used to carry agricultural tools. The present invention is mainly applied to fixing and moving agricultural implements on the rear suspension of the tractor, so as to facilitate agricultural production. The system has obvious advantages such as no pollution, more reasonable force, improved utilization efficiency of force, realization of coarse adjustment and fine adjustment, better stability and self-regulation ability.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a hydraulic suspension device with double adjustment functions. Background technique [0002] With the progress of mechanical, electrical and hydraulic technology and the continuous development of materials and processing technology, agricultural mechanization has embarked on the road of rapid development. The suspension device is an important part of the tractor, which realizes the effective connection between the tractor and the working farm implements, and is a key device for related agricultural farming. In order to meet the needs of modern automated agricultural operations, the suspension device has also developed from the early mechanical three-point suspension to the current electro-hydraulic suspension system, and the electro-hydraulic suspension system can be quickly matched with a variety of agricultural tools to form a variety of Advanced tr...

AI Technical Summary

Problems solved by technology

However, since the tractor electro-hydraulic suspension system is a strongly nonlinear system, its external load is greatly affected by soil, topography, tractor driving conditions, and weather changes, and the working conditions are very harsh. It is necessary to ensure the quality of relevant agricultural operations and ensure that the tractor The process of achieving optimal control of tractor operating activities is very complex

During the field farming of tractor electro-hydraulic suspension system, the load fluctuates greatly, the working conditions of different farm implements are greatly different, and the terrain is very different. However, the existing traditional electro-hydraulic suspension device based on a pair of hydraulic cylinders (in order to reduce costs, most of them are The system does not adopt the electro-hydraulic servo system which has stricter requirements on the use environment), and there are defects such as single adjustment function, poor adaptability and active adjustment ability, poor control accuracy and stability, which greatly reduce the operating efficiency and The quality of work is difficult to adapt to the modernization of agricultural machinery

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