With one solenoid (4/3), at normal status P to A&B.
Port A connect to the first hydraulic cylinder and port B connect to the second cylinder. Each cylinder has one pipe only. Cylinders are used as clamps.
The question is how to control two cylinder in 4 cases:
1. Both cylinders extract.
2. One extracts, on retracts
3. Both cyllinders retract.
Let think and tell me know.
Friday, March 26, 2010
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Control combine with pump off
ReplyDeleteAssuming that we are using single acting spring loaded cylinder,
ReplyDeleteFollowing conditions can satisfy the requirement,
1. With the port P connected to A&B (float center spool)both cylinders extracted
2. P connected to A and B connected to T will give one extract and one retract
3. both A&B connected to T (float center spool) will give both cylinders retracted position
Sachin Chivate
SoftDEL Systems Pvt. Ltd.
sachin.chivate@softdel.com
Hi Sachin,
ReplyDeleteThank you for your comment.
The solenoid valve schema is:
1. Coil a & b not powered: P connected to A & B(float center spool), so both cylinders extracted
2. Coil a powered: P connected to A, B connected to T, 1st cylinder extracted and 2nd cylinder retracted
3. Coil b powered: P connected to B, A connected to T, 1st cylinder retracted and 2nd cylinder extracted
So I don't know what case both cylinders will be retracted?