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Multi-cylinder synchronous structure of hydraulic system

A technology of hydraulic system and hydraulic cylinder, applied in the field of multi-cylinder synchronous structure of hydraulic system, can solve the problems of inconsistent friction gap, error of cylinder machining accuracy, and difficulty in controlling the parallelism of sliders.

Inactive Publication Date: 2012-07-25
NANTONG FORGING EQUIP
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to the certain error in the machining accuracy of each oil cylinder, the friction gaps in various places are inconsistent, and the parallelism of the slider is difficult to control, resulting in serious wear of the guide column of the press.

Method used

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  • Multi-cylinder synchronous structure of hydraulic system
  • Multi-cylinder synchronous structure of hydraulic system
  • Multi-cylinder synchronous structure of hydraulic system

Examples

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Embodiment Construction

[0009] Such as figure 1 , 2 As shown, hydraulic cylinder group Ⅰ1, hydraulic cylinder group Ⅱ2, system Ⅰ3, system Ⅱ4, plug-in 5, solenoid ball valve A6, two-position four-way solenoid valve B7, proportional pressure regulating valve 8.

[0010] The hydraulic cylinder group I1 and the hydraulic cylinder group II2 are supplied with fluid by the system I3 and the system II4 respectively.

[0011] A device for controlling the oil discharge volume of the return chamber of the hydraulic cylinder group II2 is provided on the return chamber of the hydraulic cylinder group II2 based on the pressure of the return chamber of the hydraulic cylinder group I1.

[0012] The return cavity oil discharge control device 9 includes a plug-in 5, a solenoid ball valve A6, a two-position four-way solenoid valve B7 and a proportional pressure regulating valve 8, wherein the plug-in 5 has three oil ports a, b, and c, and when the c oil port When there is pressure, port a and port b are disconnected,...

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Abstract

The invention relates to a multi-cylinder synchronous structure of a hydraulic system, which comprises a hydraulic cylinder group I and a hydraulic cylinder group II. A system I and a system II supply liquid to the hydraulic cylinder group I and the hydraulic cylinder group II respectively. The multi-cylinder synchronous structure is characterized in that a device for controlling the oil drainage quantity of a return cavity of the hydraulic cylinder group II based on the pressure of a return cavity of the hydraulic cylinder group I is arranged on the return cavity of the hydraulic cylinder group II. The system I and the system II correspondingly supply oil in the same quantity to upper cavities of hydraulic cylinders involved in pressing, the device for controlling the oil drainage quantity of the return cavity of the hydraulic cylinder group II controls the oil drainage quantity by means of comparing the pressure of the return cavity of the hydraulic cylinder group I with the pressure of the return cavity of the hydraulic cylinder group II, and uniform movement of the hydraulic cylinders in the hydraulic cylinder group I and the hydraulic cylinder group II is ensured, so that the balance level of a whole movable beam is controlled.

Description

technical field [0001] The invention relates to a hydraulic system, in particular to a multi-cylinder synchronous structure of the hydraulic system. Background technique [0002] When the automobile longitudinal beam press presses the longitudinal beam, due to the long length of the longitudinal beam, the pressing slider is driven by 6-8 master cylinders, and all the master cylinders participate in the pressing. Due to certain errors in the machining accuracy of each oil cylinder, the friction gaps in various places are inconsistent, and the parallelism of the sliders is difficult to control, resulting in serious wear of the guide post of the press. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a multi-cylinder synchronous structure of the hydraulic system, which can automatically control the synchronous movement of each group of master cylinders and ensure the parallelism when the slider moves. [0004] In or...

Claims

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Application Information

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IPC IPC(8): F15B11/22
Inventor 丁玉兰
Owner NANTONG FORGING EQUIP
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