Full-hydraulic-driven high-speed rice transplanter chassis

Abstract

The invention provides a full-hydraulic-driven high-speed rice transplanter chassis. An oil supplementing pump is connected with a flushing shuttle valve through two oil supplementing one-way valves,and the flushing shuttle valve is connected with an oil tank through a low-pressure overflow valve and a cooling valve; oil outlets of the two oil supplementing one-way valves are connected with two oil ports of a plunger pump, and two oil inlets of the flushing shuttle valve communicate with each other; walking variable displacement motors are connected in parallel, then serially connected with arice transplanting motor and then connected with the two oil ports of the plunger pump; a series control valve group is connected between an oil suction port of the rice transplanting motor and the oil outlets of the two oil supplementing one-way valves; an oil outlet of a gear pump is connected with a steering gear and a flow divider through a priority valve separately; the flow divider is connected with an oil inlet of a profiling balance control valve and an oil inlet of a seedling box lifting control valve; two working oil ports of the profiling balance control valve are connected with two oil ports of a balance oil cylinder respectively; the two working oil ports of the seedling box lifting control valve are connected with two oil ports of a lifting oil cylinder respectively; and anoil way of a rod cavity is connected with a hydraulic control one-way valve and a one-way throttle valve in series. The chassis can meet the requirement for normal operation of a rice transplanter ona paddy field and a hard road surface.

Description

technical field [0001] The invention relates to a rice transplanter, in particular to a fully hydraulic driven high-speed rice transplanter chassis. Background technique [0002] Rice is one of the most important grains in my country. Ensuring increased rice production and income is of great significance to maintaining food supply and ensuring national food security. At this stage, in order to ensure high rice yields, machine transplanting is mainly used for planting. Compared with manual transplanting and hand-held transplanting machines, high-speed rice transplanting machines have a series of advantages such as high efficiency and good planting quality. Most high-speed rice transplanting machines adopt HST or HMT transmission mode, which can achieve high work efficiency. Rice transplanters have long been working in paddy fields with narrow roads, deep mud feet, and rheological characteristics. The existing mass-produced high-speed rice transplanters can basically meet the...

AI Technical Summary

Problems solved by technology

[0003] (1) Multi-stage gears and transmission shafts are used to transmit power, the transmission system is complex and heavy, the layout is fixed and single, and the speed regulation range is small

[0004] (2) Low power density, unable to meet lightweight requirements

[0005] (3) The existing rice transplanter is hydraulically assisted steering, and the paddy field mud foot is deep, the steering resistance is large, and it is difficult to operate the steering wheel. Long-term driving will easily cause operator fatigue, and the front wheel steering angle is small and the turning radius is large, which is not conducive to turn around

[0006] (4) The braking system is complicated, and a special friction braking device needs to be installed

[0007] (5) The impact load is large during shifting, starting and acceleration

[0008] (6) It is not conducive to the realization of automation and intelligent control, and it is difficult to operate remotely

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