High-flow electric-hydraulic proportional cartridge valve hydraulic control system for differential speed regulation
A technology of hydraulic control system and proportional cartridge valve, which is applied to fluid pressure actuators, servo motors, mechanical equipment, etc., can solve the problems of low hydraulic machinery precision, inconvenient maintenance, and large space occupation, and achieve simple structure, Reduce equipment cost and increase work efficiency
Active Publication Date: 2015-03-11
SHANDONG TAIFENG INTELLIGENT CONTROL CO LTD
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Problems solved by technology
[0003] The object of the present invention is to provide a hydraulic control system for differential speed regulation of a large-flow electro-hydraulic proportional cartridge valve, which is a control system that uses a combination of a proportional cartridge valve and an integrated hydraulic control system to control the speed of a hydraulic mechanical cylinder. Hydraulic machinery has low precision, complex structure, high failure rate, serious leakage, unstable action, large impact, large space occupation, and inconvenient maintenance. The hydraulic signal is connected with computer control to realize hydraulic control fast forward, work advance, The purpose of the pressing process
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[0009] Reference figure 1 , The hydraulic control system for differential speed regulation of the large flow electro-hydraulic proportional cartridge valve of the present invention is composed of the system oil inlet 1, the system oil return port 2, six sets of cartridge valves, and four sets of two-position four-way solenoid directional valves , Shuttle valve 6, safety valve 8, solenoid ball valve 10, cylinder 11, proportional cartridge valve 17, pressure reducing valve 18 and direct-acting relief valve 19, the system oil inlet 1 and the second cartridge valve 4 The oil inlet is connected, the system oil inlet 1 is connected with the control port of the proportional cartridge valve 17, the system oil inlet 1 is connected with the oil inlet of the third two-position four-way solenoid valve 12, and the system oil inlet 1 is The oil inlet of the first two-position four-way solenoid valve 5 is connected, the oil outlet of the second cartridge valve 4 is connected with the oil inle...
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The invention relates to a high-flow electric-hydraulic proportional cartridge valve hydraulic control system for differential speed regulation, in particular to a hydraulic control system facility, controlled by high-flow electric-hydraulic proportion, for the differential speed regulation. According to the high-flow electric-hydraulic proportional cartridge valve hydraulic control system for differential speed regulation, an oil outlet of a sixth cartridge valve is communicated with a control port of the sixth cartridge valve, an oil return port of a third two-position four-way solenoid valve is communicated with a system oil return port, an oil outlet of a fourth cartridge valve is communicated with a system oil outlet, an oil inlet of the fourth cartridge valve is communicated with an oil inlet of a fourth two-position four-way solenoid valve, a working port of the fourth two-position four-way solenoid valve is communicated with a control port of the fourth cartridge valve, and an oil return port of the fourth two-position four-way solenoid valve is communicated with the system oil return port. The high-flow electric-hydraulic proportional cartridge valve hydraulic control system for differential speed regulation has the advantages of being simple in structure, adopting the cartridge valves, being small in size, stable and reliable in work and free from leakage, having a differential motion function, being high in working efficiency, saving energy consumption, reducing manufacture cost of a device, and being high in integration level and capable of being widely applied to the devices with the high-flow electric-hydraulic proportional cartridge valve hydraulic control system for the differential speed regulation.
Description
Technical field [0001] The invention relates to a large-flow electro-hydraulic proportional cartridge valve differential speed regulating hydraulic control system, in particular to a large-flow electro-hydraulic proportional control and differential speed adjustment hydraulic control system equipment. Background technique [0002] At present, the hydraulic mechanical system mainly adopts the slide valve type hydraulic control system equipment developed in the 1950s, especially the speed control structure of the hydraulic actuator is complicated, and more valves are needed to realize the speed control, but only manual control is not compatible with the current Computer control connection, low control precision, low working efficiency of hydraulic machinery, can not meet the needs of existing production, its structure is complex, the failure rate is high, the leakage is serious, the action is unstable, the impact is large, the space is large, and the maintenance is not Convenience....
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IPC IPC(8): F15B11/04
Inventor 于良振王明琳高梅柱张春光
Owner SHANDONG TAIFENG INTELLIGENT CONTROL CO LTD