High-flow hydraulic pump unit oil supply system in transfer parallel connection

Abstract

The invention discloses a high-flow hydraulic pump unit oil supply system in transfer parallel connection. The system comprises a power device 1, wherein the power device 1 is fixedly connected with ashell of a gear transfer case 3, a driving wheel 3-0 of the gear transfer case 3 is connected with an output shaft of the power device 1 through a spline, and N driving wheels (3-1)-(3-N) of the geartransfer case 3 are connected with a drive shaft of hydraulic pumps (4-1)-(4-M) through splines; two end surfaces of a transfer case gear are limited to the shell of the gear transfer case through bearings 7 respectively; and the hydraulic pumps (4-1)-(4-M) are used for pumping hydraulic oil to a subsequent hydraulic system, and M is larger or equal to N. Aiming at the high-flow hydraulic system,a single high-power power device is selected to drive multiple small-displacement hydraulic pumps combined through parallel connection by the aid of the gear transfer case, system oil supply in a multi-split form can be realized, the oil supply demand of the high-flow hydraulic system can be met, and weight and size of the oil supply system can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission in mechanical engineering, in particular to a split-parallel large-flow hydraulic pump group oil supply system. Background technique [0002] In the hydraulic transmission system, the oil supply system drives the hydraulic pump to absorb oil from the oil source through the power unit, and then pumps the high-pressure oil to the subsequent hydraulic system. The weight and volume of the oil supply equipment usually account for a large proportion of the entire system. Lightweight design is of great significance to the entire hydraulic system. [0003] According to the current industrial design level, the higher the power of power devices such as electric motors and engines, the easier it is to achieve a higher power / weight ratio. For hydraulic pumps such as axial piston pumps, the displacement is smaller under the same pressure. Then the flow / weight ratio is easier to make higher. Th...

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Problems solved by technology

Both ① and ② have the disadvantage of low power / weight ratio of the system, and ① will occupy a large space volume at the same time, which is not conducive to equipment placement; ③ has relatively high power / weight, but the space distribution of the entire oil supply system will be unreasonable Disadvantages of (too long)

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