Flow matching valve and electro-hydraulic actuator using flow matching valve
A technology of electro-hydraulic actuators and flow matching valves, which is applied in the direction of mechanical equipment, servo meter circuits, fluid pressure actuators, etc., can solve the problems of unsuitability for high-frequency actions, insufficient reliability, and high cost, and achieve simple structure, Maintenance-free and improved flow capacity
Active Publication Date: 2017-12-26
CHONGQING CHUANYI AUTOMATION
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AI Technical Summary
Problems solved by technology
Due to the need for energization and time-lag characteristics of the electromagnetic reversing valve, this solution is not suitable for high-frequency operating conditions
At the same time, the electromagnetic reversing valve itself will also become a potential failure point, requiring frequent maintenance
In the occasions where explosion-proof is required, an explosion-proof electromagnetic reversing valve must also be selected, so the cost of this solution is high, the volume is large, and the reliability is not enough.
Method used
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Embodiment Construction
[0031] The present invention will be further described below in conjunction with accompanying drawing.
[0032] see figure 1As shown, a flow matching valve includes a valve body, the upper and lower parts of the valve body are provided with a first valve cavity for installing a piston and a second valve cavity for installing a one-way valve core, the first The annular boss 1.16 used to support the one-way valve core between the valve chamber and the second valve chamber, the first valve chamber communicates with the second valve chamber, and the two second valve chambers are respectively located at both ends of the valve body. Each of the second valve chambers is provided with a one-way valve core. The one-way valve core adopts a conical one-way valve core 1.4. The conical one-way valve core 1.4 is composed of a conical cylinder and a cylinder. The spring installation hole, the oil hole connected to the spring installation hole is provided on the tapered column, and the seali...
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The invention discloses a flow rate pairing valve and an electrohydraulic actuating mechanism adopting the same. The upper part and the lower part of a valve body of the flow rate pairing valve are provided with a piston and a one-way valve core; a reset spring is arranged on the one-way valve core in a sleeving way; a baffle ring is arranged on the reset spring; five oil collecting openings are formed in the valve body; one end of an oil pump is connected with one side of a first oil collecting opening of a flow rate pairing valve A, and the other end of the oil pump is connected with one side of a first oil collecting opening of a flow rate pairing valve B; the other side of the first oil collecting opening of the flow rate pairing valve A is connected with a third oil collecting opening and a fifth oil collecting opening of the flow rate pairing valve B; the other side of the first oil collecting opening of the flow rate pairing valve B is connected with a third oil collecting opening and a fifth oil collecting opening of the flow rate pairing valve A; second oil collecting openings of the flow rate pairing valve A and the flow rate pairing valve B are respectively connected with oil openings of an oil cylinder; fourth oil collecting openings of the flow rate pairing valve A and the flow rate pairing valve B are respectively connected with an oil tank. The flow rate pairing valve has the advantages that the structure is simple and compact; an electromagnetic valve is not needed; the output is realized by controlling the motor; the system belongs to an integration integral system.
Description
technical field [0001] The invention relates to an electro-hydraulic control device, in particular to a flow matching valve and an electro-hydraulic actuator using the flow matching valve. Background technique [0002] At present, the most conventional way of action in the electro-hydraulic actuator of the valve is to use the motor to drive the oil pump in one direction, and control the opening and closing of the valve through the electromagnetic reversing valve. Due to the need for energization and time-lag characteristics of the electromagnetic reversing valve, this solution is not suitable for high-frequency operating conditions. At the same time, the electromagnetic reversing valve itself will also become a potential failure point, requiring frequent maintenance. In the case where explosion-proof is required, an explosion-proof electromagnetic reversing valve must also be selected, so the cost of this solution is high, the volume is large, and the reliability is not eno...
Claims
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IPC IPC(8): F15B13/04F15B11/08
CPCF15B11/08F15B13/0401F15B13/0417F15B2211/20515
Inventor 李巧向学院游军
Owner CHONGQING CHUANYI AUTOMATION