A brush frame structure of a large low-speed DC hoisting motor

Abstract

The invention discloses a brush holder structure of a large-scale low-speed DC lifting motor, and belongs to the field of motors. The brush holder structure comprises a positive conducting ring, a negative conducting ring and a circular brush holder base which are sequentially arranged at intervals from front to back along the axial direction, and is characterized in that the positive conducting ring is formed by butting two first semicircular bodies, the negative conducting ring is formed by butting two second semicircular bodies, the brush holder base is formed by butting two semicircular half brush holder bases, and the brush holder base is provided with positive electrode brush rod assemblies connected with the positive conducing ring and negative electrode brush rod assemblies connected with the negative conducting ring which are sequentially arranged at intervals in an alternative manner along the circumference. The brush holder structure of the large-scale low-speed DC lifting motor is reasonable in structure design, compact, reliable, convenient to assemble and disassemble, capable of being assembled or disassembled repeatedly, low in material cost, short in production cost, and capable of well meeting the operating requirements of disassembling and replacing a carbon brush and adjusting the center line of a brush holder.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to a brush holder structure of a ZTD large-scale low-speed DC lifting motor. Background technique [0002] ZD large-scale DC motor has large capacity and current, the number of brushes is generally 5-8 brushes, and the brush holder is long. The brush holder is made of cast aluminum. The brush holder needs to be molded, and the brush holder is transported separately. [0003] The capacity and current of ZTD large-scale low-speed DC hoisting motors are generally smaller than those of ZD large-scale DC motors. In the operating space, the diameter of the commutator is generally one gear larger than that of the ZD motor, and the corresponding brush holder structure size is smaller than that of the ZD motor; due to the difference in the size of the commutator and the structure of the air passage, the structure of the brush holder of the ZTD motor is quite different from that of the ZD mo...

AI Technical Summary

Problems solved by technology

[0002] ZD large-scale DC motor has large capacity and current, the number of brushes is generally 5-8 brushes, and the brush holder is long. The cast aluminum brush holder is used. The brush holder needs to be molded, and the brush holder is transported separately.

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