Hydraulic transformer

Abstract

The present invention discloses a hydraulic pressure changer, formed from shell, front end cover, rotating shaft, plunger, cylinder, port plate and rear end cover. According to the working principle of hydraulic pressure changer it utilizes the control of rotating angle of port plate of said hydraulic pressure change, regulation of flow rate change of three oil holes of the pressure changer and further control of output pressure of the pressure changer to drive lienar load or rotary load to make it move. By adopting special port plate and rear end cover structure said invention can resolve the oil liquor throttling loss between the port plate and rear end cover, exaggerate the pressure-regulating ratio range of hydraulic pressure changer and can make it implement the functions of regulating pressure.

Description

technical field [0001] The invention relates to hydraulic components, in particular to a hydraulic transformer. Background technique [0002] The constant pressure network secondary regulation technology developed in recent years has improved the flexibility and efficiency of the hydraulic system. However, although there are many advantages in the principle of secondary regulation, its application in the hydraulic field has been limited to a certain extent. In terms of driving the rotating load, the driving of the rotating load can be realized by adjusting the adjustment mechanism of the variable hydraulic motor. The traditional method of driving linear loads with different load pressure requirements is through a throttling control method. Since the throttling control method has a large pressure difference, this control method brings a large energy loss. How to transmit the energy of the constant voltage network with a certain pressure without ene...

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Problems solved by technology

In this patent, the high-pressure port on the front end of the distribution plate is led to the center of the rear end of the distribution plate, the positions of the other two slots remain unchanged, and the slots of the rear end cover are also adjusted accordingly. The turndown ratio range has been improved, but is still very limited, and there is an energy loss in the oil between the rear end cover and the valve plate

In this patent, the four notches of the rear end cover are respectively connected to the two load oil circuits and the low-pressure oil circuit through the reversing valve, which increases the complexity of the hydraulic transformer structure

At the same time, in this patent, in order to prevent the inclination of the valve plate, a rolling bearing with a large radial dimension is used, which increases the volume of the hydraulic transformer

[0011] In Endsley, John, c.Hydraulic pressure transformer. WO 00 / 28211, 18 May 2000 patent, it is proposed to replace the valve plate and the rolling bearing with the valve plate block of the static pressure support structure, so that the size of the hydraulic transformer is reduced. In this In the structural hydraulic transformer, a plate needs to be sealed and connected with the thick end cover through threads first, and then the rear broken cover is connected with the shell, which increases the complexity of the hydraulic transformer

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