公开(公告)号：EP0015102A1

公开(公告)日：1980-09-03

申请号：EP80300365.6

申请日：1980-02-07

申请人： MAGNUM AUTOMOTIVE EQUIPMENT, INC.

发明人： Brosene Jr., William E.

IPC分类号： B60C25/02

CPC分类号： B60C25/132 ,  B60C25/025

摘要： The bead breaker is comprised of two blades (50,140) held in immobile spaced relation relative one to the other, the two blades defining two spaced working faces in a common plane adapted to lie flush against the bead area (18) of a tire (14) when the two blades are butted against a rim's flange in initial set up position prior to breaking the tire's bead away from the rim. The blades (36,37) are preferably formed from curved plates having a common curvature axis (75) that axis being angled relative to the median plane (35) ofthe rim (13) in a direction away from the rim's center when the two blades are butted against the rim's flange (17) in the set up position. The curvature of the blades (36,37) preferably is such that no point on the rim edge of each blade is spaced away from the rim's flange a distance greaterthan about two times the tire's bead core (90) diameter when the blades are butted against the rim's flange in set up relation. The bead breaker blades are swingably connected to a power unit (39) for moving the blades between storage and use positions. The bead breaker mechanism (10) and power unit (39) are structured so that, in use, the bead breaker blades are drawn from the set up position toward the rim's center plane in a generally linear and radially inward directed fashion without the blades being latched to the tire's rim and without contact of the blades with the rim. At maximum extension of the bead breaker blades by the power unit, the working faces of the blades are entirely located radially inward of the rim's flange (17).

摘要翻译： 胎圈破碎机由相对于另一个保持不间断的两个叶片（50,140）组成，两个叶片在公共平面中限定两个间隔开的工作面，该平面适于与轮胎（14）的胎圈区域（18）齐平 ）当两个叶片在将轮胎的胎圈远离轮辋之前在初始设置位置对接在轮辋的凸缘上时。 叶片（36,37）优选地由具有共同曲率轴线（75）的曲线板形成，该共同曲率轴线（75）的轴线相对于边缘（13）的中间平面（35）在远离轮缘的中心的方向上成角度， 刀片在设置位置对着边缘的法兰（17）。 叶片（36,37）的曲率优选地使得当叶片对接时，每个叶片的边缘上的任何点不与轮缘的凸缘间隔开大于轮胎胎圈芯（90）直径的大约两倍的距离 对着边缘的法兰设置关系。 胎圈破碎器叶片可摆动地连接到用于在存储和使用位置之间移动叶片的动力单元（39）。 胎圈破碎器机构（10）和动力单元（39）的结构使得在使用中，胎圈破碎机叶片以大致线性和径向向内的方式从设置位置朝向轮辋的中心平面被拉出， 锁定到轮胎的边缘，并且不与刀片与轮缘接触。 在通过动力单元最大限度地延伸胎圈破碎机叶片的情况下，叶片的工作面完全位于轮缘的凸缘（17）的径向内侧。