| 摘要 |
<p>A hydraulic wrench (1) comprises a portable case (2) for housing and transporting a hydraulic gearcase (3) adapted to deliver a predetermined flow rate of a suitable liquid under pressure, a manually operable screwing tool (4), hydraulically connected to the hydraulic gearcase (3) by means of a hydraulic circuit (15) including delivery (15a) and return (15b) branches of said liquid under pressure from and to the hydraulic gearcase (3) to which they are connected by interposition of a solenoid valve (46), as well as power supply means (10) of the hydraulic gearcase (3) associated to the portable case (2).</p> |
