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Crane

A crane and motor technology, applied in cranes, walking bridge cranes, load hanging components, etc., can solve the problems of time-consuming, difficult to replace, and time-consuming component replacement, and achieve easy replacement and update, wide space, The effect of saving time spent on demolition

Inactive Publication Date: 2012-07-04
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, since the motor control unit is placed in a small space inside the girder, there is a problem that it takes time to replace the components themselves
In particular, when a component fails due to the end of its life, there is a problem that it takes time to replace the component itself because multiple components fail consecutively within a relatively short period of time.
When replacing the motor control unit, it takes time to replace the motor control unit arranged in the girder, and it is difficult to replace the motor control unit because it needs to be carried in and out of the girder

Method used

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Examples

Experimental program
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Embodiment Construction

[0045] refer to Figure 1 to Figure 8 A ladle crane according to one embodiment of the present invention will be described.

[0046] figure 1 It is a top view explaining the structure of the ladle crane of this embodiment.

[0047] Ladle Cranes (Cranes) 1, such as figure 1 As shown, there are end tie beam (end tie) 3, main beam (crane main body) 5, sub beam 7, main trolley (trolley) 9, and sub trolley (trolley) sub trolley 11 .

[0048] figure 2 is description figure 1 The side view of the composition of the main beam and the main trolley.

[0049] end-connected beams 3, such as figure 2 As shown, a pair of members extending along a traveling rail 17 provided on a traveling truss 15 is provided, and a traveling device 19 traveling on the traveling rail 17 is provided. On the end connection beam 3, such as figure 1 As shown, a main beam 5 and an auxiliary beam 7 are installed.

[0050] image 3 is description figure 1 A schematic diagram of the composition of the l...

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PUM

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Abstract

The invention provides a crane which is easy to replace and update the semiconductor element for motor. The crane is provided with: a crane main body; a motor; a motor control part to control the motor output by controlling the electric power supplying to the motor; and an electric chamber provided with a motor control part, which can be detachably mounted on the crane main body.

Description

technical field [0001] The invention relates to a crane, in particular to a ladle crane for carrying ladles. Background technique [0002] Conventionally, in an ironmaking facility or a steelmaking facility, molten steel is filled into a ladle (ladle), and the ladle is transported one by one by a ladle crane. For example, molten steel is poured into a ladle from an electric furnace, transported by a ladle crane to a converter, etc., and poured into the converter. [0003] The ladle crane transports the ladle in a hoisted state by using the main winding device, lifts the lower part of the ladle by using the auxiliary winding device and tilts it, thereby injecting molten steel from the ladle into a converter or the like (for example, refer to JP-A 11-268881 Bulletin). [0004] In a conventional ladle crane, a motor control unit for controlling a motor that drives a main winding device and the like is disposed in a space within a girder of the ladle crane. [0005] The motor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C17/10
CPCB66C13/22B66C2700/08
Inventor 阪本俊彦
Owner MITSUBISHI HEAVY IND LTD