Hydraulic-control cotton box lifting system capable of expanding

Abstract

The invention discloses a hydraulic lifting control mechanism, a liftable box body and a cotton box lifting system of a cotton picker. The hydraulic lifting control mechanism comprises a first oil cylinder, a second oil cylinder, a third oil cylinder, a synchronous distributing motor and a solenoid directional valve, wherein a piston rod of the first oil cylinder, a piston rod of the second oil cylinder and a piston rod of the third oil cylinder act on a to-be-lifted device; and the first oil cylinder, the second oil cylinder and the third oil cylinder are same oil cylinders, and volume, in unit height, of low cavities of the three cylinders is twice the capacity of upper cavities of the three cylinders. The hydraulic lifting control mechanism applies a parallel and series mixed use way, avoids a phenomenon that the oil cylinders are out of step as a result of uneven stress of the parallel oil cylinders through three oil cylinders, which are the same in structural form and specification, and synchronous distributing motors, realizes synchronous and stable lifting control on a to-be-lifted device, reduces management and maintenance cost, is low in cost, and is reliable in operation.

Description

technical field [0001] The invention relates to the field of mechatronics, in particular to a hydraulic lifting control mechanism, a lifting box and a cotton box lifting system. Background technique [0002] In order to ensure the efficiency of cotton picking and reduce the secondary pollution caused by unloading the cotton on the ground and then loading it into the truck, it is often necessary to unload the harvested cotton directly from the cotton picker to the cotton truck, which requires the unloading of the cotton box The opening must reach a certain height of the cotton unloading outlet, so the cotton box has to be lifted to increase the distance from the ground of the cotton unloading opening. By directly lifting the cotton box to a predetermined height on the cotton picker, the secondary pollution of cotton can be reduced and the working efficiency can be improved. However, at present, the lifting of the cotton box has insufficient rigidity of the locomotive foundat...

AI Technical Summary

Problems solved by technology

However, at present, the lifting of the cotton box has insufficient rigidity of the locomotive foundation, and the inclination of the ground leads to inconsistent changes in the contour height of the lifting foundation, etc., and due to the inconsistent distribution of cotton in the cotton box, the position of the center of gravity is uncertain and often changes. During the lifting process of the cotton box, it often happens that the cotton box is lifted and tilted, stuck in the air, unable to lift, and accompanied by abnormal noise, causing damage to parts

Seriously affect cotton picking efficiency and increase maintenance costs and a lot of labor waste

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