Four-way hydraulic transformer with variable flow-distribution waist-type holes and equal flow discharge of inlet and outlet oil

Abstract

The present invention discloses a four-way hydraulic transformer with variable flow-distribution waist-type holes and equal flow discharge of inlet and outlet oil. The four-way hydraulic transformer comprises an end cover, a flow assignment disc rotating shaft, an equilibrium assignment assembly, a main flow assignment assembly, a cylinder body assembly, a swash plate and a housing, wherein the right end face of the end cover and the left end face of an equilibrium cover, the right end face of the equilibrium cover and the left end face of a flow assignment cover, and the right end face of the flow assignment cover and the left end face of a cylinder body are attached to each other through oil films respectively; the structure sizes of an equilibrium assignment disc and a main flow assignment disc are completely identical; the end cover, the equilibrium cover, the flow assignment cover and the housing are fixed and still relative to each other; the equilibrium assignment disc and the main flow assignment disc are fixed together with the flow assignment disc rotating shaft; the flow assignment disc rotating shaft, a cylinder body and the swash plate can all rotate along respective central axes; the central axis of the flow assignment disc rotating shaft accords with that of the cylinder body, and an included angle is formed between the central axis of the flow assignment disc rotating shaft and the central axis of the swash plate. Under the condition of not changing conventional speed adjustment modes of valve-controlled loads, throttled and waste hydraulic energy at positions of an original system can be recycled, and the recycled hydraulic energy can be directly used or stored.

Description

technical field [0001] The invention relates to a four-way hydraulic transformer with a flow distribution waist-shaped hole with variable flow rate of oil in and out, which belongs to hydraulic transmission and control technology. Background technique [0002] Nowadays, in hydraulic equipment, one hydraulic pump supplies oil to multiple loads at the same time, and the output pressure of the hydraulic pump must be higher than the maximum load pressure to allow the maximum load to operate. If the load pressure is very different, the oil supplied by the system to the low-pressure load circuit will be throttled to a large pressure through the speed control valve, resulting in a large power loss, the efficiency of the system is very low, and the oil temperature will rise. It must be equipped with Larger power cooling equipment lowers the oil temperature to the range required by the system, which increases power consumption. For working conditions with potential energy reduction ...

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Problems solved by technology

[0003] The current pump and motor tow hydraulic recovery device has complex structure, large volume and weight, low recovery efficiency and high cost; while the flow ratio of the two pressure oil ports of the new hydraulic transformer is the reciprocal of the transformation ratio, it is difficult to control the flow entering the load Flow rate, mainly used for secondary pressure regulation of constant pressure network

Most of the current hydraulic equipment, especially construction machinery, is a valve-controlled load hydraulic system. This system is very mature, and many of them have been made into integrated valve groups and industrial hydraulic pumps that match specific loads. It is difficult to change the existing hydraulic system. structure and process, but there are problems of throttling, heat generation and low efficiency

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