The invention provides a brake for direct-drive hoisting equipment. An electromagnetic mechanism of the brake comprises an armature and a magnet yoke located on the outer side of the armature. The armature and the magnet yoke form a closed magnetic circuit and can move axially. A spring is arranged in the center of the armature. Two ends of the spring are connected with the armature and the magnetyoke respectively. A winding is installed in the magnet yoke and surrounds the armature. A groove is formed in the middle of the armature. The spring is arranged in the groove. One end of the springis fixedly connected with the bottom face of the groove, and the other end of the spring is connected with a spring position-following spherical shaft. A steel ball is arranged between the spring position-following spherical shaft and the magnet yoke. The spring position-following spherical shaft is a cylinder with one end being a spherical face and the other end being a plane. Two grooves are separately formed in corresponding positions of the spherical face and the bottom face of the magnet yoke. The two grooves form a cavity used for accommodating the steel ball. The steel ball is arrangedin the cavity. By means of the brake, failure and breakage accidents caused by uneven stress of the spring easily occurring in a traditional guide structure are avoided.
本发明提供一种用于直驱卷扬设备的制动器,其电磁机构包括衔铁和位于衔铁外侧的磁轭,衔铁与磁轭组成闭合磁路并可作轴向移动,所述衔铁中心部位设有弹簧,弹簧两端分别与衔铁和磁轭连接;所述绕组安装在磁轭内部,绕组环绕衔铁;所述衔铁中部设有凹槽,所述弹簧置于凹槽中,弹簧一端与凹槽底面固定连接,另一端与弹簧随位球面轴连接,弹簧随位球面轴和磁轭之间设有钢球;所述弹簧随位球面轴为一端为球面,另一端为平面的圆柱体,所述球面和磁轭底面的相应位置分别设有一凹槽,两个凹槽组成用于容纳钢球的空腔,所述钢球置于空腔中。本发明的制动器避免了传统导向结构容易出现的弹簧受力不均匀导致的失效断裂事故。
Brake for direct-drive hoisting equipment
一种用于直驱卷扬设备的制动器
2020-11-17
Patent
Electronic Resource
Chinese