| 摘要 |
PURPOSE: A tensile force maintenance apparatus is provided to prevent the fault of parts due to hydraulic variation applied thereto by automatically compensating for a fluid leakage and a fluid path loss. CONSTITUTION: A tensile force maintenance apparatus includes a power supplying section(11), a hydraulic pressure setting section(12), a control section(35), and a solenoid valve(13). A user sets hydraulic pressure by using the hydraulic pressure setting section(12). The hydraulic pressure setting section(12) detects hydraulic pressure and outputs hydraulic pressure data. The control section(35) generates a predetermined control signal based on the output signals generated from the hydraulic pressure setting section(12). The solenoid valve(13) is operated according to the control signal outputted from the control section(35).
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