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Crane device

A technology for cranes and power generation devices, which is applied in the field of crane devices and can solve problems such as inability to obtain power generation

Active Publication Date: 2015-07-29
MITSUI E&S MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this technique, when the rotational speed of the diesel engine is changed, the frequency and the amount of electric power generated by the generator change, so there is a problem that the required power generation cannot be obtained depending on the operating conditions.

Method used

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Embodiment Construction

[0010] Embodiments of the present invention will be described below with reference to the accompanying drawings. [Structure of the embodiment] Refer to figure 1 , the crane device related to an embodiment of the present invention is described.

[0011] figure 1 The crane device shown is a device for loading and unloading loads by driving motors 30 to 33 connected to the DC common bus 9 after supplying electric power generated by motor driving to the DC common bus 9 . This crane device mainly includes an engine generator 1, a rectifier 13, a voltage booster 2, a main winding motor 30, travel motors 31, 32, a lateral movement motor 33, inverters (INV) 41-44, a discharge device 5, Power storage device 6 , controller (control device) 7 , and DC common bus 9 . In this embodiment, while the power from the rectifier 13 is supplied to the DC common bus 9 , the voltage booster 2 is also used to boost and rectify the generated power from the engine generator 1 to supply to the DC com...

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PUM

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Abstract

In parallel to power supply from a rectifier (13), power generated by an engine generation device (1) is boosted and rectified by a boosting device (2) and supplied to motors (30 to 33). Thus, even if the rpm of a Diesel engine of the engine generation device (1) changes, it is possible to stably supply a desired generated power.

Description

technical field [0001] The invention relates to a crane device, in particular to a crane device in an engine-driven power generation mode (the engine-driven power generation mode adopts engine drive to generate driving power). Background technique [0002] In cargo distribution centers such as harbors, cranes are used to load and unload cargo such as containers on ships and trailers. This type of crane device uses a plurality of electric motors to carry out operations such as lifting and lowering of cargo, traveling and lateral movement of the platform. Also, in order to supply operating power to these motors, in the engine-driven power generation system, a configuration is employed in which an engine generator (the engine generator uses a diesel engine to drive a generator) is used to supply necessary power to each motor. [0003] In such a crane device, the load may become the largest when lifting the load, but hardly requires power when the load is lowered, and the load ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/14
CPCB66C13/18
Inventor 栢菅信哉原田秀和川口昌治佐藤宗史
Owner MITSUI E&S MACHINERY CO LTD