Oil separation and combination self-conversion tractor hydraulic system

Abstract

The invention relates to an oil separation and combination self-conversion tractor hydraulic system. The oil separation and combination self-conversion tractor hydraulic system comprises a transmission case, a hydraulic oil tank and a duplex gear pump; a transmission case communication port and a high-pressure pump communication port are formed in the hydraulic oil tank; the transmission case communication port is connected with one end of a rear oil suction pipe provided with a tee joint; the other end of the rear oil suction pipe is connected with a second connector of the tee joint; a first connector of the tee joint is communicated with the transmission case; a third connector of the tee joint is connected with a low-pressure lubricating pump in the duplex gear pump through a lubricating pump oil suction pipe; the center of the second connector of the tee joint is higher than that of the third connector; the high-pressure pump communication port is connected with a high-pressure pump in the duplex gear pump through a pipeline; and a one-way ventilation plug is further installed at the top of the hydraulic oil tank and used for exhausting air in the hydraulic oil tank and preventing external air from entering the hydraulic oil tank. By adopting the oil separation and combination self-conversion tractor hydraulic system, on one hand, the available oil amount of the tractor hydraulic system is increased; more extendable functions of a tractor are achieved; and on the other hand, hydraulic working oil of the tractor and lubricating and cooling oil of a transmission system can be balanced.

Description

technical field [0001] The invention belongs to the field of tractor hydraulic systems, and in particular relates to a tractor hydraulic system with automatic conversion of oil separation and combination. Background technique [0002] Tractors are inseparable from the support of hydraulic components when carrying out agricultural production activities. Different functions and different types of hydraulic components form a complete hydraulic system. At present, according to the relationship between the tractor hydraulic system and the gearbox, the hydraulic system can be divided into two structures: oil-combining and oil-separating. For tractors that adopt the hydraulic system of the oil separation structure, the hydraulic oil is not easily polluted by gearbox gear debris, which can ensure the cleanliness of the hydraulic oil to the greatest extent, and has a good protection effect on the hydraulic components. However, the arrangement of the hydraulic oil tank of the tractor...

AI Technical Summary

Problems solved by technology

If the hydraulic oil of the tractor in the oil combination system is too much, it is easy to increase the rotational resistance of the gears and reduce the transmission efficiency of the gears

At the same time, when there is a lot of hydraulic oil, the heat generated by the gear rotation will also increase, which will easily cause the temperature of the transmission system to be too high

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