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Crane control device

A technology for controlling equipment and cranes, applied in the directions of load hanging components, transportation and packaging, etc., can solve the problems of long debugging time, high cost, difficult maintenance, etc., and achieve the effects of diversified control methods, simple installation and stable control.

Inactive Publication Date: 2017-06-23
杨配媛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3) Programming is very complex and takes a long time to debug
[0007] 4) Maintenance is difficult and the cost is too high
[0008] Therefore, the second method is not a good choice

Method used

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  • Crane control device

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Embodiment Construction

[0017] Referring to the accompanying drawings, the present invention includes two variable frequency motors 1, two expansion cards 2, two SEOHO frequency converters 3, two synchronization cards 4 and two terminals 5, and the SEOHO frequency converter 3 communicates with the described The frequency conversion motor 1, the expansion card 2 and the synchronization card 4 are connected, the two expansion cards 2 are connected through signal lines, the terminal 5 is connected with the expansion card 2 through signal lines, and the two SEOHO frequency converters 3 are connected by a communication cable.

[0018] In this example, the long-span gantry crane has a span of 52 meters and is driven by four 7.5KW variable frequency motors. The crane has multiple speeds. In each speed, the four frequency conversion motors must run synchronously. Two 15KW SEOHO frequency converters are used. The expansion card is the Option-Card expansion card, and the synchronization card is the Sychron-Car...

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PUM

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Abstract

The invention relates to a crane control device. The crane control device comprises two variable frequency motors, two expansion cards, two SEOHO frequency converters, two synchronization cards and two terminals. The SEOHO frequency converters are connected with the variable frequency motors, the expansion cards and the synchronization cards through signal lines correspondingly. The two expansion cards are connected through a signal line. The terminals are connected with the expansion cards through signal lines. The two SEOHO frequency converters are connected through a communication cable.

Description

technical field [0001] The invention belongs to the technical field of hoisting machinery manufacturing, and in particular relates to a crane control device. Background technique [0002] For hoisting machinery, conventional synchronous control realizes speed regulation through encoders, and there are two speed regulation control methods: [0003] Method 1: Connect an encoder to the shafts of the two variable frequency motors. Then connect the signal of the encoder to the frequency converter controlled by them. The respective set speeds are adjusted through the PID adjustment function of the frequency converter itself. Make the respective set speeds tend to a theoretical set value, and use this method to adjust the synchronization. Since the two inverters have no communication, the accuracy is not reliable, and sometimes there will be danger, poor anti-interference, troublesome installation, and maintenance. It is also inconvenient. Method 2: An encoder is also connected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/22
CPCB66C13/22
Inventor 杨配媛
Owner 杨配媛