公开(公告)号：US06578824B2

公开(公告)日：2003-06-17

申请号：US09840429

申请日：2001-04-23

申请人： Yasuhiro Samejima

发明人： Yasuhiro Samejima

IPC分类号： B66D312

CPC分类号： B66D3/16 ,  B66D3/10 ,  Y10S254/903

摘要： The present invention provides an overload-preventing device for a winch, by which even an overload is caused to descend. The overload-preventing device includes an accommodation hole that is formed in a rotation drive member and is open in the contact plane with a pressing drive member and accommodates a movable piece pressing member and a movable piece. The movable piece is pressed to the side of the pressing drive member by the movable piece pressing member. An engagement groove having a depth in which approx. half of the movable piece can be driven is formed at a part of the contact plane of the pressing drive member. The unwinding side of the engagement groove is formed at the fitting plane while the winding-up side thereof is formed on the inclined surface.

公开(公告)号：US06517054B2

公开(公告)日：2003-02-11

申请号：US09840427

申请日：2001-04-23

申请人： Yasuhiro Samejima

发明人： Yasuhiro Samejima

IPC分类号： B66D114

CPC分类号： B66D3/14 ,  B66D1/58

摘要： A lever hoist with an overload preventing device comprises a pressing member for rotatably pressing a pressed member via a reverse rotation preventing ring and a pair of friction members, and a rotation drive member capable of transmitting rotating force of a chain wheel to the pressing member and movable in an axial direction. The rotation drive member is urged toward the pressing member by a disk spring. Locking teeth are formed at surfaces facing each other, of the pressing member and the rotation drive member, respectively. Respective pressed surfaces during a hoisting-down operation, of the locking teeth are sharply inclined, while respective pressed surfaces during a hoisting-up operation are moderately inclined. A rotation limiting member is interposed between the rotation drive member and the disk spring. Even if the rotation drive member is rotated in an overload state, the rotating force of the rotation drive member cannot be transmitted to the disk spring and a nut.

公开(公告)号：US06352243B1

公开(公告)日：2002-03-05

申请号：US09563993

申请日：2000-05-03

申请人： Yasuhiro Samejima

发明人： Yasuhiro Samejima

IPC分类号： B66D114

CPC分类号： B66D1/58 ,  B66D3/16

摘要： The object is to provide a chain hoist with an overload prevent device, ensuring an easy and secure adjustment of load limit numerical values. It comprises a pressing drive member 8 for pressing and rotating a pressure receive member 7 by way of a backstop wheel 11 and friction members 9 and 10, and an axially displaceable, rotary drive member 14 adapted to transmit a rotational force of a hand chain wheel 15 to the pressing drive member. The rotary drive member is urged toward the pressing drive member by a belleville spring 24. The pressing drive member and the rotary drive member have lock teeth 80 and 140 that are formed on their respective confronting faces. The lock teeth 80 and 140 include steeply sloped wind-down press faces 80a and 140a, respectively, and gently sloped wind-up press faces 80b and 140b, respectively. A rotation limit member intervenes between the rotary drive member 14 and the belleville spring 24 in order to prevent a rotational force of the rotary drive member from being transmitted to the belleville spring and a nut 25 even though the rotary drive member is rotated while climbing over the gently sloped faces in an overload condition.

摘要翻译： 目的是提供带有过载防护装置的链式葫芦，确保对负载极限数值进行简单和安全的调整。 其包括用于通过止回轮11和摩擦构件9和10按压和旋转压力接收构件7的按压驱动构件8和可轴向移动的旋转驱动构件14，其适于传递手链轮的旋转力 15到按压驱动构件。 旋转驱动构件通过贝氏弹簧24朝向按压驱动构件被推压。按压驱动构件和旋转驱动构件具有形成在它们各自的相对面上的锁定齿80和140。 锁定齿80和140分别包括陡峭倾斜的压下压力表面80a和140a，并且分别平缓地倾斜的卷绕按压面80b和140b。 旋转限位构件介于旋转驱动构件14和百叶窗弹簧24之间，以便防止旋转驱动构件的旋转力传递到贝氏弹簧和螺母25，即使旋转驱动构件在爬过时旋转 在过载条件下轻轻倾斜的面。

公开(公告)号：US5769398A

公开(公告)日：1998-06-23

申请号：US854624

申请日：1997-05-12

申请人： Yasuhiro Samejima

发明人： Yasuhiro Samejima

IPC分类号： B66D3/14

CPC分类号： B66D3/14

摘要： A lever-type hoist comprising a pressure receiving member 6, a press drive member 7 adapted to press-drive the pressure receiving member 6 through friction members 8, 9 and a reverse rotation stop ring 10, and a coil spring 13 interposed between the pressure receiving member and press-drive member, the base engaging portion 13b of coil spring 13 being engaged by an engaging groove 6d of pressure receiving member and the tip engaging portion of coil spring 13 being engaged by an engaging surface 7k of press-drive member, with an inclined surface 7h formed in the wind-up side of the engaging surface 7k.

摘要翻译： 一种杠杆式起重机，包括受压构件6，压力传动构件7，其适于通过摩擦构件8,9和反向止动环10压力驱动压力接收构件6，以及螺旋弹簧13，其插入在压力 接收构件和压力驱动构件，螺旋弹簧13的基部接合部分13b由受压构件的接合槽6d和螺旋弹簧13的末端接合部分接合，由压力驱动构件的接合表面7k接合， 具有形成在接合表面7k的卷绕侧的倾斜表面7h。