Crane electrical apparatus control system with by-pass frequency converters
An electrical control and frequency converter technology, applied in the field of control systems, can solve the problems of heavy crane weight, high failure rate, large number of cables, etc., to reduce maintenance and ensure work reliability.
Inactive Publication Date: 2016-12-14
李志刚
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Problems solved by technology
[0002] In the existing industrial production and other activities, cranes are widely used. However, the existing cranes need a large amount of electric current introduced by cables to supply power when they complete the work process of moving forward, backward, lifting ropes, descending and limiting. The number of wires is large and the weight is heavy. There are multiple steel structures on the main girder to support the cables, which greatly increases the weight of the crane, resulting in a waste of electric energy and a high failure rate.
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[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0011] see figure 1 , in an embodiment of the present invention, a frequency conversion belt bypass crane electrical control system, including A trolley running frequency converter, A trolley lifting frequency converter, B trolley running frequency converter, B trolley lifting frequency converter, and cart running frequency converter and the spare frequency converter, the A trolley running frequency converter, the A trolley lifting frequency converter, the B t...
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The invention discloses a crane electrical apparatus control system with by-pass frequency converters, which comprises a trolley A running frequency converter, a trolley A hoisting frequency converter, a trolley B running frequency converter, a trolley B hoisting frequency converter, a large vehicle running frequency converter and a standby frequency converter, wherein all of the trolley A running frequency converter, the trolley A hoisting frequency converter, the trolley B running frequency converter, the trolley B hoisting frequency converter, the large vehicle running frequency converter and the standby frequency converter are controlled by a PLC. According to the crane electrical apparatus control system, frequency control of a crane can be realized stably and reliably; two gears are arranged in each direction, so that speed can be adjusted to be fast and low manually to meet various of production requirements; variable frequency speed regulation is carried out on the premise of ensuring that speed regulation of each mechanism can be carried out fast without disturbance; and when a certain mechanism goes wrong or is damaged, the standby frequency converter can be put into use via manual switching, so that emergency use of the crane is guaranteed.
Description
technical field [0001] The invention relates to a control system, in particular to a frequency conversion band bypass crane electrical control system. Background technique [0002] In the existing industrial production and other activities, cranes are widely used. However, the existing cranes need a large amount of electric current introduced by cables to supply power when they complete the work process of moving forward, backward, lifting ropes, descending and limiting. The number of wires is large and the weight is heavy. There are multiple steel structures on the main girder to support the cables, which greatly increases the weight of the crane, resulting in a waste of electric energy and a high failure rate. Contents of the invention [0003] The object of the present invention is to provide a frequency conversion band bypass crane electrical control system to solve the problems raised in the above background technology. [0004] To achieve the above object, the prese...
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IPC IPC(8): B66C13/48
CPCB66C13/48
Inventor 李志刚李唐陈波刘鑫
Owner 李志刚