Variable-frequency integrated three-phase asynchronous motor

Abstract

The invention discloses a frequency conversion integrated three-phase asynchronous motor, which comprises a motor body, a frequency converter and a motor cooling device, and is characterized in that the motor body and the frequency converter are connected through a dismounting and mounting structure; an input end wiring terminal frame is arranged on the motor body, a frequency converter is fixedly installed in the input end wiring terminal frame through a detachable installation structure, the detachable installation structure comprises an installation block and a fixing column which are fixedly installed in the input end wiring terminal frame, and the outer side of the fixing column is sleeved with a supporting spring; the dismounting and mounting structure further comprises fixing sleeves arranged at the bottoms of the front side face and the rear side face of the frequency converter, guide blocks are fixedly mounted on the left side and the right side of each fixing sleeve, spring grooves are formed in the guide blocks, and positioning pins penetrate through the guide blocks and extend into inner cavities of the fixing sleeves. The frequency converter is convenient to dismount through the dismounting and mounting structure; the motor cooling device improves the heat dissipation performance of the motor body and prolongs the service life of the motor; the arrangement of the wire storage box body avoids the disordered wiring of the motor and the frequency converter, and the frequency converter can be dismounted for inspection and maintenance without dismounting a wire.

Description

technical field [0001] The invention relates to the technical field of frequency conversion motors, in particular to a frequency conversion integrated three-phase asynchronous motor. Background technique [0002] Frequency conversion motor referred to as frequency conversion motor is a general term for motors driven by frequency converters. The motors can achieve different speeds and torques under the drive of frequency converters to adapt to changes in load demand; the existing frequency conversion motors are used in harsh environments and dissipate heat. In poor conditions, variable frequency motors often fail due to high operating temperature for a long time; and for variable frequency integrated three-phase asynchronous motors, since the frequency converter is directly fixed on the motor body, when the frequency converter fails, the frequency converter needs to be disassembled. Maintenance, the traditional bolt installation method, the bolts are easy to rust when used fo...

AI Technical Summary

Problems solved by technology

[0002]Frequency variable speed motor is referred to as variable frequency motor, which is a general term for motors driven by frequency converters. The motor can achieve different speeds and torques under the drive of frequency converters to adapt to the load. The demand for variable frequency motors changes; the existing frequency conversion motors are used in harsh environments and poor heat dissipation conditions, and frequency conversion motors often fail due to high temperature for a long time; and for frequency conversion integrated three-phase asynchronous motors, since the frequency converter is directly fixed on the motor On the main body, when the inverter fails, it needs to be disassembled and repaired. The traditional bolt installation method, the bolts are practical and easy to rust for a long time, it is difficult to disassemble, and sufficient disassembly and operation space is required, which makes the disassembly and assembly of the inverter time-consuming and laborious; The output end of the inverter needs to be connected to the input end of the motor through wires. The length of the connecting wires in the traditional connection method is fixed and cannot be adjusted. Disassembly and assembly of the device, and it is easy to bring safety hazards

[0003] The prior application CN110898023A discloses a measurement and control integrated motor, which solves some technical problems of distributed control and monitoring of geared motor equipment clusters, including (1) the existing The control system and the state monitoring system belong to two systems, which causes redundancy of hardware equipment with similar functions in terms of hardware, and multi-type signals are likely to interfere with each other at the industrial site; Cables, control signal cables, and status monitoring signal cables each form a loop, causing problems such as too many cables and a large wiring workload, which is likely to cause operational errors by on-site installation and commissioning personnel, and there are many hidden trouble points; (3) The separation of the control system and the monitoring system results in a waste of the cost of power cables, control signal cables and status monitoring signal wireless transmission devices used in the geared motor equipment cluster and the cost of wiring man-hours

However, it has not solved: the traditional bolt installation method, the bolts are easy to rust for a long time, and the disassembly is difficult, and requires enough disassembly operation space, which makes the disassembly and assembly of the inverter time-consuming and laborious; the output of the inverter needs to be connected with the input of the motor The terminals are connected by wires. In the traditional connection method, the length of the connecting wires is fixed and cannot be adjusted. The three-phase wires are easy to be entangled, and the connecting wires are placed in disorder in the motor terminal box, which affects the disassembly and assembly of the inverter and is easy to bring safety. Hidden dangers, such technical problems

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