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A hydraulic logic control device for pressure adaptive switching of main and auxiliary hydraulic cylinders

An adaptive switching and logic control technology, applied in the direction of fluid pressure actuation device, servo motor, servo motor assembly, etc., can solve the problems of electromagnet malfunction, damage, switching impact, etc., to achieve smooth switching, simple and reliable operation, The effect of eliminating tremors

Active Publication Date: 2017-08-25
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Claims
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Problems solved by technology

In order to realize this process, the existing control method is the master, and the auxiliary cylinder is controlled separately. During the operation, a travel switch or other displacement detection means are set to send signals to participate in the control of the master and auxiliary cylinders. 1. In well-maintained occasions, this control method is widely used. For occasions with complex working conditions and harsh environments, this control method is not very effective, and unexpected problems will occur, such as: tremor, switching shock, and slippage when stationary. Misoperation of the electromagnet may also produce destructive results in severe cases

Method used

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  • A hydraulic logic control device for pressure adaptive switching of main and auxiliary hydraulic cylinders
  • A hydraulic logic control device for pressure adaptive switching of main and auxiliary hydraulic cylinders

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] see figure 1 , the existing control technology principle is as follows:

[0016] When the mechanism needs to be empty, the electromagnet Y50a of the second electromagnetic reversing valve 118-10 that controls the action of the auxiliary cylinder is de-energized, Y50b is energized, and the pressure oil passes through the right channel of the second electromagnetic reversing valve 118-10 through the throttle valve. 107-13 enters the lower cavity of the a...

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Abstract

The invention discloses a hydraulic logic control device for pressure self-adaptive switching of main and auxiliary hydraulic cylinders. The auxiliary cylinder is sequentially connected with a pressure regulating valve, a throttle valve and a second electromagnetic reversing valve. The first logic valve and the second logic valve are respectively connected between the pressure regulating valve and the auxiliary cylinder. The first logic valve is connected to the master cylinder. And between the first electromagnetic reversing valve. The present invention not only fully realizes the functions of the existing control methods, but also reduces the links that are likely to cause failures, and the inherent rapidity, sensitivity and reliability of pressure self-adaptation eliminates tremors, switching shocks, and slippage at rest. Shifting and other issues, the switching between main and auxiliary hydraulic cylinders is smoother, which is very suitable for the working conditions of the mechanism.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a hydraulic logic control device for pressure self-adaptive switching of main and auxiliary hydraulic cylinders. Background technique [0002] At present, in the forming and forging industry, due to the requirements of technology and cost, a large number of main and auxiliary hydraulic cylinders coexist in many mechanisms. The cylinder is the master cylinder, and the master cylinder is the slave cylinder), such as figure 1 As shown, it is a schematic diagram of the existing control method. When working, the master cylinder works with the auxiliary cylinder at a slow speed (in this state, the master cylinder is the active cylinder, and the auxiliary cylinder is the slave cylinder); this can greatly reduce the hydraulic pressure. The system configuration cost is low, so it is widely used. In order to realize this process, the existing control method is the master, and the auxilia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/06F15B11/16
Inventor 解通护郭星良王训安彭立广刘邯涛朱纪刚杨鹏陆明红
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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