Crane, in particular bridge crane or gantry crane, having at least one crane girder

Patent metadata

Field	Value
Publication number	US-10407281-B2
Application number	US-201615547651-A
Country	US
Kind code	B2
Filing date	Feb 5, 2016
Priority date	Feb 6, 2015
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A crane, such as a bridge crane or gantry crane, having at least one horizontally extending crane girder, which is designed as a lattice girder having a plurality of braces and on which a crane trolley having a lifting device can be moved. At least some of the braces are planiform, and each of the planiform braces has a flat main surface, which extends transversely to a longitudinal direction of the crane girder. On each longitudinal side of the braces, a first cut-out and a second cut-out are provided in the main surfaces. The longitudinal sides of at least some of the planiform braces are free of edge bends at least between the first and second cutouts.

First claim

The invention claimed is:

1. A crane, said crane comprising at least one horizontally extending crane girder designed as a lattice girder having a plurality of struts, on which crane girder a crane trolley with a hoist can travel, wherein at least some of the struts have a sheetlike flat design and the flat struts each comprise a planar main surface which extends in each case transversely to a longitudinal direction of the crane girder, wherein on each long side of the struts a first recess and a second recess is provided in the main surfaces, wherein the long sides are formed without bent edges by at least some of the flat struts at least between the first and second recesses.

2. The crane as claimed in claim 1 , wherein the long sides are formed without bent edges over their entire length.

3. The crane as claimed in claim 2 , wherein the bent edge-free long sides extend exclusively in a plane of the respective main surface.

4. The crane as claimed in 3 , wherein the long sides of all struts are formed without bent edges.

5. The crane as claimed in claim 4 , wherein at least one first strut and one second strut form a strut pair and are disposed in an X shape with respect to one another as seen transversely to the longitudinal direction of the crane girder.

6. The crane as claimed in claim 5 , wherein the two struts of each strut pair each comprise a cut-out in one of the long sides and the two struts are fitted together by means of the two cut-outs.

7. The crane as claimed in claim 6 , wherein the two struts of each strut pair are welded together in the region of the cut-outs.

8. The crane as claimed in claim 7 , wherein the cut-outs in the struts of each strut pair are formed in such a way that the mutually allocated long sides of the struts arranged in an X shape are disposed in a flush arrangement.

9. The crane as claimed in claim 8 , wherein the cut-outs extend starting from the respective long side in the direction of a longitudinal axis of the struts, and wherein the cut-outs extend in a rectangular shape as far as the longitudinal axis and are disposed in the region of half the strut length.

10. The crane as claimed in claim 4 , wherein at least one first strut and one second strut form a strut pair and are disposed in a V shape with respect to one another as seen transversely to the longitudinal direction of the crane girder.

11. The crane as claimed in claims 1 , wherein the crane girder comprises at least one upper boom extending straight in the longitudinal direction thereof and at least one lower boom disposed in parallel with the upper boom, wherein the upper boom and the lower boom are connected to one another via a plurality of struts disposed in the longitudinal direction of the crane girder.

12. The crane as claimed in claim 1 , wherein the crane comprises two crane girders disposed in parallel with and spaced apart from one another.

13. The crane as claimed in claim 1 , wherein the bent edge-free long sides extend exclusively in a plane of the respective main surface.

14. The crane as claimed in claim 1 , wherein the long sides of all struts are formed without bent edges.

15. The crane as claimed in claim 1 , wherein at least one first strut and one second strut form a strut pair and are disposed in an X shape with respect to one another as seen transversely to the longitudinal direction of the crane girder.

16. The crane as claimed in claim 15 , wherein the two struts of each strut pair each comprise a cut-out in one of the long sides and the two struts are fitted together by means of the two cut-outs.

17. The crane as claimed in claim 16 , wherein the two struts of each strut pair are welded together in the region of the cut-outs.

18. The crane as claimed in claim 16 , wherein the cut-outs in the struts of each strut pair are formed in such a way that the mutually allocated long sides of the struts arranged in an X shape are disposed in a flush arrangement.

19. The crane as claimed in claim 16 , wherein the cut-outs extend starting from the respective long side in the direction of a longitudinal axis of the struts.

20. The crane as claimed in claim 19 , wherein the cut-outs extend in a rectangular shape as far as the longitudinal axis and are disposed in the region of half the strut length.

21. The crane as claimed in claim 1 , wherein at least one first strut and one second strut form a strut pair and are disposed in a V shape with respect to one another as seen transversely to the longitudinal direction of the crane girder.

Assignees

• Konecranes Global Corp

Inventors

• Passmann Christoph
• Kreisner Richard
• Schlierbach-Knobloch Thomas
• Noll Stefan

Classifications

• E04C2003/0491

  the truss elements being located in one single surface or in several parallel surfaces · CPC title

• E04C3/09

  at least partly of bent or otherwise deformed strip- or sheet-like material · CPC title

• B66C6/00 Primary

  Girders, or track-supporting structures, specially adapted for cranes (base supporting structures with legs B66C5/00; girders in general E04C3/02) · CPC title

• B66C19/00

  Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries (B66C17/00 takes precedence; base supporting structures with legs B66C5/00; jib cranes B66C23/00) · CPC title

• B66C17/00

  Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports · CPC title