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Synchronous control system for crane

A synchronous control and crane technology, applied in the direction of load hanging components, transportation and packaging, etc., can solve the problems of high interference, high precision of electrical components and hydraulic components, and inapplicability, so as to achieve the principle of easy operation and strong adaptability Power, simple effect

Pending Publication Date: 2020-07-17
QINHUANGDAO TIANYE TOLIAN HEAVY INDUSTRY CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0012] However, the shortcomings of the above-mentioned prior art are too limited, the precision requirements for electrical components and hydraulic components are too high, and the interference is too large, so it is not suitable for complex nonlinear systems.

Method used

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  • Synchronous control system for crane
  • Synchronous control system for crane
  • Synchronous control system for crane

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Embodiment Construction

[0048] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0049] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article generally indicates that ...

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Abstract

The embodiment of the invention provides a synchronous control system for a crane. A torque value of a steel wire rope of each winch is calculated through a programmable logic controller according tothe weight, obtained by a load instrument, of objects lifted by each winch and the frequency of a frequency converter corresponding to each winch, the torque value of the steel wire rope of each winchand / or the height of the lifted objects is compared with an operating torque value of one set standard winch and / or the height of the lifted objects, according to the comparison results, the workingfrequency of the frequency converters corresponding to all the winches is adjusted so as to control the operating rate of all the winches except the standard winch, and thus the heights of all the winches are located in the same parallel line. According to the synchronous control system for the crane, output of the frequency converters of all the winches except the standard winch is subjected to PID control adjusting through compared error values, and thus simultaneous operation of the multiple winches during hoisting is achieved.

Description

technical field [0001] The embodiments of the present application relate to the field of hoisting machinery, and in particular, to a synchronous control system of a crane. Background technique [0002] A crane refers to a multi-action hoisting machine that vertically lifts and horizontally transports heavy objects within a certain range, also known as a crane, aerial crane, and crane. [0003] The hoisting machinery used in bridge construction projects can generally be divided into four categories: light and small hoisting equipment, bridge type hoisting machinery, jib type cranes and cable cranes according to their structure and performance. Light and small lifting equipment such as: jack, pneumatic hoist, electric hoist, balance hoist (also known as balance crane), hoist, etc. Bridge type hoisting machinery such as beam cranes, etc. Jib type cranes such as stationary slewing cranes, tower cranes, truck cranes, tire cranes, crawler cranes, etc. Cable cranes such as lifts...

Claims

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Application Information

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IPC IPC(8): B66C13/48
CPCB66C13/48
Inventor 王大江王金祥张宇高志隆冯扶民
Owner QINHUANGDAO TIANYE TOLIAN HEAVY INDUSTRY CO LTD
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