Electrical control system for assembling field bridge of rubber tyred gantry crane

An electrical control system, technology of gantry crane

Inactive Publication Date: 2006-12-06
SHANGHAI ZHENHUA HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The task of the present invention is to provide an improved electrical control system for assembled yard bridges used in rubber-tyred gantry cranes, which solves the problem of the existing electrical control system being expensive due to complete sets of imports and having to connect a large number of low-voltage electrical appliances to the AC control system The problem of assembling an electrical control system that meets the requirements for the use of rubber-tyred gantry cranes

Method used

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  • Electrical control system for assembling field bridge of rubber tyred gantry crane
  • Electrical control system for assembling field bridge of rubber tyred gantry crane
  • Electrical control system for assembling field bridge of rubber tyred gantry crane

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Embodiment Construction

[0019] see Figure 1 to Figure 3 , The present invention is an electrical control system for assembly yard bridges of rubber-tyred gantry cranes, equipped with one or two hoisting frequency converters, one trolley frequency converter, and two or four cart frequency converters according to mechanical design requirements. According to the needs, the programmable logic controller PLC is equipped with a central processing unit CPU frame, several expansion frames and remote control modules.

[0020] This system includes an electrical control room or three to four electrical control panels placed in the electrical room, a small frame control panel and a driver's cab control panel or linkage platform. The hardware of this system is connected to each other through wiring.

[0021] Figure 1 to Figure 3 It shows the single line diagram, primary circuit diagram, control circuit diagram and corresponding auxiliary circuit diagram of the system.

[0022] The system adopts the control m...

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Abstract

The invention relates to an electric control system of rubber-tyre-gantry crane comprising at least a hoisting transducer, a handcart transducer, at least two cart transducers, a PLC with a CPU framework, a plurality of extension frameworks and remote control modules, a plurality of electric control panels, a handcart rack control panel and a driver's cab console. Said parts of the system are connected by wires. The control method using common DC bus includes supplying the main power source to the hoisting transducer via an air switch to commutate, then supplying the commutated power source to the cart transducer and handcart transducer as DC power source, and the common DC bus is provided with brake unit. The independent control method includes supplying the main power source to all transducers to commutate and invert independently, each of the transducers has independent brake unit and brake resistance. The transducers communicate with the PLC via communication module T-LINK, and configure via communication interfaces. The system has high precision and constant power control function.

Description

technical field [0001] The invention relates to a crane, in particular to an electrical control system for an assembled yard bridge of a rubber-tyred gantry crane (RTG). Background technique [0002] There are many types of electrical control systems for rubber-tyred gantry cranes. The electrical control part generally adopts a control cabinet and is installed in the room. Since it is imported as a complete set, the delivery time is long and the cost is high. If Fuji Electric's FRENIC5000VG series frequency converter is used as the main drive mechanism of the rubber-tyred gantry crane control system, Fuji Electric's programmable logic controller (PLC) is used as the control element, but it must be connected to the AC control system of a large number of low-voltage electrical appliances. Assemble an electrical control system that meets the requirements for the use of rubber-tyred gantry cranes. Contents of the invention [0003] The task of the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/22
Inventor 杨育青
Owner SHANGHAI ZHENHUA HEAVY IND
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