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Automatically deployable boom extension and method of deploying same

An extension and boom technology, which is applied in the field of automatically deploying the boom extension and deploying it, can solve the problems of impracticality and not being widely adopted.

Active Publication Date: 2008-10-01
MANITOWOC CRANE CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This arrangement has therefore not been widely adopted on smaller cranes and is impractical for larger cranes with heavier boom extensions

Method used

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  • Automatically deployable boom extension and method of deploying same
  • Automatically deployable boom extension and method of deploying same
  • Automatically deployable boom extension and method of deploying same

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0027] Referring now to the accompanying drawings for the purpose of illustrating a preferred embodiment of the invention and not for the purpose of limiting it, FIGS. 1-4 and 17 illustrate a boom 10 having a top 12, a bottom 14, a first side 16, Two sides 18 , a rear end 20 and a front end 22 . The boom 10 also includes a base portion 24 and a plurality of telescoping portions 26 projecting from the front end 22 . The telescoping end of the boom may hereinafter be referred to as the front of the boom, and the opposite end of the boom may be referred to as the rear or foundation of the boom. These terms will also be used to describe boom extensions mounted on the boom side; this is the "front" part of the boom extension that is the part of the boom extension that is closest to the telescoping section of the boom when the extension is mounted on the boom , although the front and rear portions of the boom extension will change position when the boom extension is swung into its ...

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PUM

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Abstract

A crane including a telescoping boom has a base boom member and an inner member slidably mounted in the base boom member with a first end projecting from the base boom member. The inner member includes first and second connector elements. A boom extension has a first end including first and second attachment elements. The boom extension also includes first and second spaced bracket assemblies and is shiftable between use and storage positions. A first support associated with the base boom member includes a holder for pivotably retaining the first bracket assembly and a second support has a rail projecting from the base section. A slider is slidably supported by the rail, and an actuator connected between the slider and the boom shifts the slider between a retracted position and an extended position relative to the base boom member. A method of deploying a boom extension is also disclosed.

Description

technical field [0001] The present invention relates to an automatically deployable boom extension and to a method of deploying it, and more particularly to a boom having an actuator attached thereto for use in A boom moves a portion of a boom extension away from a boom boom during boom extension deployment and relates to a method of controlling an actuator during boom extension deployment. Background technique [0002] To extend the reach of a crane jib with a telescoping jib section, a side stowable jib or jib extension may be provided for connection to the fly section or to the next adjacent jib section. On the nose assembly, as disclosed in US Patent No. 3,785,505 dated January 15, 1974 and US Patent No. 4,483,447 dated November 20, 1984. The entire contents of these patents are incorporated in this specification by reference. [0003] The boom extension is pivotally connected to the The arm portion is on one side of the nose assembly and is then turned around and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/687
CPCB66C23/702B66C23/42
Inventor W·E·赫尔
Owner MANITOWOC CRANE CO LLC