The power output structure with dual hydraulic pumps facing each other

Abstract

The invention discloses a power output structure with double hydraulic pumps oppositely arranged. The power output structure comprises a gear chamber. A hydraulic pump gear is arranged in the gear chamber. A first bearing journal and a second bearing journal which are coaxially arranged are arranged at the positions, at the two ends of the hydraulic pump gear, on the shell correspondingly. A first installation hole and a second installation hole which are coaxially arranged are formed in the two end faces of the gear chamber correspondingly. The first bearing journal is matched with the first installation hole, and the second bearing journal is matched with the second installation hole. A tooth part is arranged at the middle portion of the hydraulic pump gear, and a first connecting part and a second connecting part used for being connected with the two hydraulic pumps are arranged at the two ends of the hydraulic pump gear. The power output structure further comprises a lubricating structure. According to the power output structure with the double hydraulic pumps oppositely arranged, the number of parts is small, the structure is simple, the production cost is low, and reliability is good.

Description

technical field [0001] The invention relates to the field of engine hydraulic pump drive structure, in particular to a power output structure for driving oppositely arranged double hydraulic pumps. Background technique [0002] For agricultural machinery such as harvesters and corn machines, the engine as a power source must not only drive it to walk, but also provide power for vehicle steering and farm tool lifting, which are provided by hydraulic systems. Therefore, a set of hydraulic power output system for driving agricultural machinery will be designed on the engine. Such as figure 1 As shown, in order to be able to drive the hydraulic power, two hydraulic pumps need to be arranged on the engine, namely the first hydraulic pump 7' and the second hydraulic pump 8', the first hydraulic pump 7' is installed on the gear chamber 2', and the second hydraulic pump Two hydraulic pumps 8' are installed on the gear chamber cover 15', and transmit power through the gears of the ...

AI Technical Summary

Problems solved by technology

[0006] However, in this technical solution, in order to realize the opposing arrangement of the dual hydraulic pumps, multiple parts including the hydraulic pump gear shaft 9', the spline shaft 13', the retaining ring 14', and the thrust plate mounting seat 12' are arranged, and the structure complex, poor reliability

Hydraulic pump gear 4' is a cantilever beam structure with poor rigidity, which may easily lead to ablation of hydraulic pump gear bushing 10'

In order to ensure the normal operation of the hydraulic pump gear bushing 10', the oil is introduced from the oil passage of the hydraulic pump drive gear shaft to the hydraulic pump gear shaft 9'. There are many parts passing through, the process loss is large, and the lubrication effect is not good.

To replace the hydraulic pump gear 4', the gear chamber cover 15' must be removed, otherwise the hydraulic pump gear 4' cannot be taken out, which is difficult to disassemble and assemble, which is not conducive to maintenance

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