调绳离合器是单绳双卷筒缠绕式提升机的一个不可缺少的部份。当前常用的调绳离合器从结构形式上可分为齿轮式、摩擦式和蜗轮蜗杆式;从动力源形式上可分为油压式、气动式和手动式等类型。上述调绳离合器在实际应用中存在着如下问题,即离合器的体积大且结构复杂,从而增加了提升机的重量和制造成本,另外,离合器操作不灵活,可靠性差,难于实现自动控制。如蜗轮蜗杆式离合器,其离与合的动作主要靠手动完成;摩擦式离合器容易打滑;而齿轮式离合器虽比前两种先进,但当其啮合时,外齿轮的轮齿不易 Adjustable clutch is a single rope double drum winding hoist an indispensable part. The currently used torque control clutch can be divided into gear type, friction type and worm gear type from the structural form; from the power source type can be divided into hydraulic type, pneumatic type and manual type. In the actual application, the torque control clutch mentioned above has the problem that the clutch is bulky and complicated in structure, thereby increasing the weight and manufacturing cost of the elevator; in addition, the clutch is not operated flexibly and has poor reliability and is difficult to realize automatic control. Such as worm gear clutch, the main action from the clutch and manually by hand; friction clutch easy to slip; and gear clutch although the first two than the advanced, but when the meshing, the external gear teeth is not easy