| 摘要 |
PROBLEM TO BE SOLVED: To automatically correct the difference in level between a master cylinder and a slave cylinder under the actual use of a lift. SOLUTION: In this hydraulic circuit of the lift for the maintenance of a vehicle, a first master check valve 14 opened when a piston 11 of the master cylinder 10 reaches its upper limit is mounted on the piston 11, a first slave check valve 24 opened when a piston 21 of the slave cylinder 20 reaches its upper limit is mounted on the piston 21, a second check valve 15 opened when the piston 11 of the master cylinder 10 reaches its lower limit is mounted on the piston 11, and a second slave check valve 25 opened when the piston 21 of the slave cylinder 20 reaches its lower limit to communicate a piston side chamber 13B of the master cylinder 10 to a piston side chamber 23B of the slave cylinder 20, is mounted on the slave cylinder 20.
|
