Visual early warning device for motor carbon brush abrasion

• Main Authors: CHEN GANG, FENG XIAOTAO, JI HONGCHAO, ZHANG ZUOWEI, SUN WENTAO, LI YI, XUE QIANG
• Format: Patent
• Language: Chinese; English
• Published: 01.01.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CURRENT COLLECTORS; ELECTRICITY; LINE CONNECTORS

The utility model relates to a visual early warning device for motor carbon brush abrasion, which comprises a fastening device, an electric brush spring, a carbon brush, an auxiliary contact, an auxiliary contact and a brush holder body, a group of carbon brushes are respectively mounted in the brush holders on the left side and the right side of the brush holder body through brush springs; the brush springs are used for relatively fixing and sliding the carbon brushes; each carbon brush is connected with an auxiliary contact, each auxiliary contact is connected with a supporting plate, each supporting plate is provided with an auxiliary contact correspondingly matched with the corresponding auxiliary contact, and the auxiliary contacts are connected with an alarm lamp of the motor in series. When the carbon brush is worn to reach the top end of the brush holder, the auxiliary contact is closed, the alarm lamp is turned on, at the moment, it can be foreseen that the carbon brush is worn to reach the replaceme