Hydraulic transformer for increasing voltage ratio regulation scope

Abstract

The invention provides a hydraulic transformer capable of increasing the regulation range of transformation ratio. One end of a central shaft is hinged on a main shaft and the other end runs through a center of a cylinder body and is arranged in a copper sleeve at a center of a spherical end surface of a spherical valve plate. The spherical valve plate structure is adopted so that the spherical end surface of the spherical valve plate forms fit with the cylinder, and a rotating rod runs through the center of a rear end cover and is connected with the spherical valve plate through a spline. The spherical valve plate is made to rotate within a certain plus and minus angle range by rotating the rotating rod so as to adjust the transformation ratio. The spherical valve plate is designed to have a structure of notch wrap angle in different sizes, thereby realizing the purpose of changing transformation ratio in a wider range by the hydraulic transformer.

Description

technical field [0001] The invention relates to a hydraulic component, in particular to a hydraulic transformer which increases the adjustment range of the transformation ratio. Background technique [0002] As a new form of hydraulic system, the secondary regulation technology of constant pressure network can greatly improve the flexibility and efficiency of the hydraulic system. However, its application in the hydraulic field is currently limited, the main reason being that there is still a lack of an effective component for driving linear and rotary loads. Hydraulic transformers are developed under this technical background. [0003] Patent WO 97 / 31185 proposes a new hydraulic transformer design concept. Compared with traditional hydraulic transformers, this hydraulic transformer integrates the functions of hydraulic motor and hydraulic pump to form a single hydraulic component. Although the hydraulic transformer has many advantages in principle, many problems need to b...

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Problems solved by technology

However, this change will also introduce another problem, that is, when the angle of the distribution plate changes, the contact area between the rear end surface of the distribution plate and the rear end cover will continue to change. The increasing thrust and decreasing supporting force lead to an increase in internal leakage of the transformer, a decrease in efficiency, and even communication between the slots, resulting in the failure of the transformer to work

Therefore, the maximum transformation ratio that this type of hydraulic transformer can achieve is small, and the boosting capacity is very limited, which limits the application range of this type of hydraulic transformer.

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