| 摘要 |
<p>The drive has one part of a drive spindle (4) entering a housing (9) of a liquid cylinder. THe other end of the drive spindle is connected to a piston rod (10), while one cylinder chamber is provided with a liquid duct (12) having a rotary type isolating valve (13). An oscillating pawl mechanism (1) is formed like a slide-block in a guide (2). The pawl is hinged at the top (3) and connected to the drive spindle. A liquid duct (12) leads to chamber (14) of the cylinder (9), thus forming a circulating system. An electronic system (15) controls opening and closing of the isolating valve.</p> |
