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Variable frequency speed control branch circuit control device of high-frequency vibrating motor

A high-frequency vibration, variable frequency speed regulation technology, applied in emergency protection circuit devices, control of multiple AC motors, electrical components, etc., can solve the problem of high cost, reduce damage, reduce product cost, and reduce product reliability.

Active Publication Date: 2010-02-10
WOLONG ELECTRIC GRP CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high reliability, but due to the use of three-pole circuit breakers, the cost is high

Method used

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  • Variable frequency speed control branch circuit control device of high-frequency vibrating motor
  • Variable frequency speed control branch circuit control device of high-frequency vibrating motor

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Embodiment Construction

[0020] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings of the description.

[0021] Such as figure 1 As shown, the frequency conversion speed regulation branch circuit control device for high-frequency vibration motors includes a frequency converter 2, a plurality of parallel branch circuit control cabinets 4 connected to the frequency converter 2, and a plurality of parallel circuit motors 13 connected to the branch circuit control cabinet 4 And the two-pole circuit breaker 12 on the drive circuit between the motor 13 and the branch control cabinet 4 . The two-pole circuit breaker 12 is an air switch, which is located on any two-phase line of the motor 13 . A signal lamp is provided on the phase line of the motor 13 without the two-pole circuit breaker 12 . The AC 380 power supply 1 enters the inverter 2, and the output terminals 3 of the U (T1), V (T2), and W (T3) motors 13 in the inver...

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Abstract

A variable frequency speed control branch circuit control device of a high-frequency vibrating motor relates to a building implement. The prior variable frequency speed control branch circuit controldevice of the high-frequency vibrating motor usually adopts alternating-current relay auxiliary contacts in series connection to realize interlocking, wiring is troublesome, faults easily appear, andoverhauling is inconvenient; on the other hand, a triple-pole breaker is used for protecting the motor and the cost is high. Each branch circuit control cabinet is provided with an interlocking control circuit which comprises a testing circuit optionally in two-phase connection with the output end of a frequency converter, a make-and-break control circuit connected with the testing circuit, and aself-locking circuit connected with the make-and-break control circuit in parallel. The branch circuit control cabinet is provided with an alternating-current contactor, the make-and-break control circuit is connected with the coil of the alternating-current contactor in series, the self-locking circuit is provided with the normally open contact of the alternating-current contactor, and a dipolarbreaker is used for protecting the motor. The invention avoids the condition that two branch circuit control cabinets run synchronously, protects the frequency converter and reduces production cost, circuitry is simple, and maintenance is convenient.

Description

【Technical field】 [0001] The invention relates to a construction tool, in particular to a control device for a frequency-variable speed-regulating branch of a high-frequency vibration motor, and belongs to the field of manufacturing railway track infrastructure equipment. 【Background technique】 [0002] High-frequency vibration motor frequency converter speed control system is mainly used in the construction of concrete prefabricated components of high-speed railways, expressways, highway bridges, and engineering buildings. A set of high-frequency vibration motor frequency converter speed regulation system includes a frequency converter, a plurality of parallel branch circuit control cabinets connected to the frequency converter, and multiple parallel connection motors connected to the branch circuit control cabinet. Each branch circuit control cabinet controls all the motors on a concrete precast mold to run or stop at the same time, and each concrete precast mold has 8 to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P5/74H02H7/085H02H7/09
Inventor 付贵霖孙鑫陈平周军
Owner WOLONG ELECTRIC GRP CO LTD
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