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Double-cylinder control system

A control system and double oil cylinder technology, applied in fluid pressure actuators, servo motors, servo motor components, etc., can solve problems such as long control time

Active Publication Date: 2016-04-06
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of long control time in the logic control mode in the prior art, the embodiment of the present invention provides a dual oil cylinder control system

Method used

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Embodiment

[0032] The embodiment of the present invention provides a dual oil cylinder control system, which is suitable for devices where the two oil cylinders do not operate at the same time, such as figure 1 As shown, the dual oil cylinder control system includes: a pressure reducing valve 1, a load sensitive control overflow valve 2, a first hydraulically controlled reversing main valve 3, a second hydraulically controlled reversing main valve 4, and a first hydraulically controlled shuttle valve 5 , the second hydraulic control shuttle valve 6, the first balance valve group 7, the second balance valve group 8, the primary oil cylinder 9, the secondary oil cylinder 10, the first check valve 11 and are used for the first hydraulic control reversing main Valve 3 provides a step signal to the PLC.

[0033] The oil inlet of the pressure reducing valve 1 is connected with the oil inlet P of the system, and the oil outlet of the pressure reducing valve 1 is respectively connected with the ...

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Abstract

The invention discloses a double-cylinder control system and belongs to the field of hydraulic control. The double-cylinder control system comprises: a pressure reducing valve, a load-sensitive control overflow valve, a first hydraulic-operated main reversing valve, a second hydraulic-operated main reversing valve, a first hydraulic-operated shuttle valve, a second hydraulic-operated shuttle valve, a first balance valve bank, a second balance valve bank, a primary cylinder, a second cylinder, a first one-way valve, and a programmable logic controller for providing the first hydraulic-operated main reversing valve with stepped signals. The double-cylinder control system in the embodiment of the present invention employs a load-sensitive system plus a constant point type electrical control program for control; the system is of constant point control, i.e., when the primary cylinder stretches out, the programmable logic controller gives a constant control command, and therefore, the time of signal acquisition, analytical process and feedback is shortened.

Description

technical field [0001] The invention relates to the field of hydraulic control, in particular to a double oil cylinder control system. Background technique [0002] At present, the sequence control method of multi-stage oil cylinders at home and abroad is constant pressure variable system + variable point electronic control program logic control. [0003] The characteristics of the constant pressure variable system + variable point electronic control program logic control are: the working oil pressure of the system is constant, and the flow into the oil cylinder is changed according to the proportional valve. When the system changes, it is necessary to use the sensor to abstract the system change into an analog value ( signal acquisition), and then use the electronic control program from analog to digital analysis, and use specific algorithms to convert it into a system control signal, and then change the system working flow through the proportional valve, so as to realize t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/16F15B13/06
CPCF15B11/16F15B13/06
Inventor 王小洋魏巍张军福
Owner WUHAN MARINE MACHINERY PLANT