Crane having a collapsible jib

Patent metadata

Field	Value
Publication number	US-11040860-B2
Application number	US-201716468757-A
Country	US
Kind code	B2
Filing date	Dec 21, 2017
Priority date	Dec 22, 2016
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

The invention relates to a crane comprising a tower and a jib, wherein the jib rests on the tower and is fixed on the tower when the crane is in an inoperative position.

First claim

The invention claimed is:

1. Crane, comprising a tower ( 11 ) and a jib ( 9 ), wherein
the jib ( 9 ) rests on the tower ( 11 ) and is fixed on the tower ( 11 ) when the crane is in an inoperative position, and
in the inoperative position, the jib ( 9 ) is locked against rotation to the tower ( 11 ) by a frame ( 12 ).

2. Crane according to claim 1 , wherein, in the inoperative position, the jib ( 9 ) rests on the tower ( 11 ) to be parallel.

3. Crane according to claim 1 , wherein an auxiliary support ( 4 ) is provided between a jib retaining support ( 2 ) and an adjustment winder ( 3 ) for adjusting the jib ( 9 ), which auxiliary support is coupled to the jib retaining support ( 2 ), by at least one guy rod ( 5 ), when in a working position.

4. Crane according to claim 1 , wherein, in an installation position, the jib ( 9 ) is coupled to a transmission platform ( 1 ), by a stay ( 10 ), at a jib articulation part ( 91 ).

5. Crane according to claim 4 , wherein the frame ( 12 ) is coupled to or mounted on the tower ( 11 ) at a location underneath and spaced away from the transmission platform ( 1 ).

6. Crane according to claim 1 , wherein the frame ( 12 ) is coupled to or mounted on the tower ( 11 ) such that the tower ( 11 ) and the jib ( 9 ) indirectly contact one another when the jib ( 9 ) is locked against rotation.

7. Crane according to claim 1 , wherein the frame ( 12 ) is separately couplable to the tower ( 11 ) at different locations along the tower ( 11 ).

8. Crane according to claim 1 , wherein the frame ( 12 ) has a profile the same as or similar to the tower ( 11 ).

9. Crane according to claim 8 , wherein the frame ( 12 ) has a rectangular cross-section larger than a rectangular cross-section of the tower ( 11 ).

10. Crane according to claim 1 , wherein the frame ( 12 ) is at least partially positioned around the tower ( 11 ) to introduce force or torque from the jib ( 9 ) into the tower ( 11 ).

11. Crane according to claim 10 , wherein the frame ( 12 ) is entirely positioned around the tower ( 11 ).

12. Crane comprising a tower ( 11 ) and a jib ( 9 ), wherein
the jib ( 9 ) rests on the tower ( 11 ) and is fixed on the tower ( 11 ) when the crane is in an inoperative position,
an auxiliary support ( 4 ) is provided between a jib retaining support ( 2 ) and an adjustment winder ( 3 ) for adjusting the jib ( 9 ), which auxiliary support is coupled to the jib retaining support ( 2 ), by at least one guy rod ( 5 ), when in a working position, and
the auxiliary support ( 4 ) and the jib retaining support ( 2 ) are uncoupled from one another in the inoperative position.

13. Crane comprising a tower ( 11 ) and a jib ( 9 ), wherein
the jib ( 9 ) rests on the tower ( 11 ) and is fixed on the tower ( 11 ) when the crane is in an inoperative position,
in an installation position, the jib ( 9 ) is coupled to a transmission platform ( 1 ), by a stay ( 10 ), at a jib articulation part ( 91 ), and
in the inoperative position, the stay ( 10 ) is uncoupled from the jib articulation part ( 91 ) and/or from the transmission platform ( 1 ).

14. Crane comprising a tower ( 11 ) and a jib ( 9 ), wherein
the jib ( 9 ) rests on the tower ( 11 ) and is fixed on the tower ( 11 ) when the crane is in an inoperative position,
in an installation position, the jib ( 9 ) is coupled to a transmission platform ( 1 ), by a stay ( 10 ), at a jib articulation part ( 91 ),
the jib articulation part ( 91 ) is hinged, and
a front part ( 911 ) and a rear part ( 912 ) of the jib articulation part ( 91 ) are rotatably coupled together by a pivot point ( 913 ).

15. Crane according to claim 14 , wherein the jib articulation part ( 91 ) comprises a connection ( 92 ) arranged on a side opposite the pivot point ( 913 ).

16. Crane according to claim 15 , wherein the connection ( 92 ) is released in the inoperative position.

Assignees

• Liebherr Werk Biberach Gmbh

Inventors

• Konijn Eric

Classifications

• B66C23/26 Primary

  for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail (with supporting couples provided by walls or buildings B66C23/20; mounted on vehicles B66C23/36; jib constructions B66C23/64) · CPC title

• B66C23/342

  with telescopic elements · CPC title

• B66C23/68

  foldable or otherwise adjustable in configuration · CPC title

• B66C23/16

  with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements · CPC title

• B66C23/36 Primary

  mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes (with pneumatic or hydraulic motors B66C23/54; vehicle or ship aspects B60 - B63) · CPC title