Unlock instant, AI-driven research and patent intelligence for your innovation.

Delivery tower crane jib with furling device

A technology of folding device and crane, which is applied in the cantilever field of the crane, two or more cantilever elements, and can solve the problems of danger, time-consuming operation and complexity, etc.

Inactive Publication Date: 2010-09-08
MANITOWOC CRANE GROUP FRANCE
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Such partial dismantling of the boom is time-consuming, complicated and dangerous, since human intervention at height is necessary here for the removal of one or more boom elements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Delivery tower crane jib with furling device
  • Delivery tower crane jib with furling device
  • Delivery tower crane jib with furling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 Shown in its entirety is a crane jib designated by reference 1 , which is oriented about a vertical axis A on top of a column (not shown here). The cantilever 1 comprises two cantilever elements, a first cantilever element located closest to the axis A and a second cantilever element 3 extending the first cantilever element 2 . The boom trolley 4 is movable along this boom 1, more particularly along the rolling path formed by the respective lower frames 5 and 6 of the two boom elements 2 and 3 (cf. also Figure 4-6 ).

[0023] Behind said axis A, this boom 1 is extended with a corresponding boom 7 carrying a counterweight 8 .

[0024] as figure 2 and 3 Implicitly, the second cantilever element 3 is foldable onto the first cantilever element 2 . Therefore as Figure 4 and 6 As shown in detail, the second cantilever element 3 is hinged in front of the first cantilever element 2 about a horizontal axis 9 approximately at the respective upper frames 10 and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The jib (1) is made up of at least two jib elements (2,3) connected by a pivot pin (9), the furling device (12) includes an actuating cylinder (15) one end of which is permanently articulated (18) to the first jib element (2) and, secured to the second jib element (3), a set of attachment points (14) laid out on one and the same circle centred on the pin (9), the other end of the actuating cylinder (15) is selectively and detachably connected to one of the attachment points (14) so that the jib (1) can be furled or unfurled through a succession of rotations corresponding to the angular spacing between two consecutive attachment points (14), where means (20,21) temporarily immobilize one jib element (3) with respect to the other in intermediate furling positions when the actuating cylinder (15) has been detached from one attachment point (14) in order to be attached to the next one.

Description

technical field [0001] The present invention relates generally to the technical field of distribution tower cranes, ie cranes with a substantially horizontal boom along which a trolley is movable, beneath which is suspended a load to be lifted and moved. More particularly, the present invention relates to said jib of a crane, more particularly to a jib of two or more jib elements, at least two consecutive jib elements being connected to each other by a horizontal axis articulation, to which There is a folding device which is driven by at least one lift, in particular a hydraulic lift. Background technique [0002] A distribution tower crane consists of two main parts: on the one hand a vertical frame or pylon, and on the other hand a generally horizontal jib mounted on top of the frame or pylon, the jib A trolley moves along the boom under which the load to be lifted or moved is suspended. Beyond the top of the bracket, the cantilever can be extended with a corresponding c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/68
CPCB66C23/68
Inventor 让·克洛德·加托
Owner MANITOWOC CRANE GROUP FRANCE