# US 2018/0022582 A1 · Crane, in particular bridge crane or gantry crane, having at least one crane girder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0022582 A1 - Document ID: US20180022582A1 - Status: Published application - Kind: A1 - Application number: 15/547,667 - Filed: 2016-02-05 - Published: 2018-01-25 - Earliest claimed: 2015-02-06 - Assignees: Terex MHPS GmbH - Applicants: Terex MHPS GmbH - Inventors: Christoph Passmann; Richard Kreisner; Thomas Schlierbach-Knobloch; Stefan Noll - Web page: https://patentgrep.com/patent/US20180022582A1 ## CPC - B66C 6/00: Girders, or track-supporting structures, specially adapted for cranes (base supporting structures with legs B66C5/00; girders in general E04C3/02) - E04B 1/24: the supporting parts consisting of metal - E04C 3/005: {Girders or columns that are rollable, collapsible or otherwise adjustable in length or height (girders as supporting members for forms E04G11/54)} - E04C 3/09: at least partly of bent or otherwise deformed strip- or sheet-like material - E04C 2003/0491: {the truss elements being located in one single surface or in several parallel surfaces} - E04C 2003/0495: {the truss elements being located in several non-parallel surfaces} - B66C: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ({specially adapted for lifting invalids A61G7/10;} rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21) - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - E04C: STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S) ## 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. A first brace and a second brace form a brace pair and are arranged in an X-shape in relation to each other as viewed transversely to the longitudinal direction of the crane girder. ## Claims ### Claim 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 is disposed and 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, characterised in that at least one first strut and one second strut form a strut pair and are arranged in an X shape with respect to one another as seen transversely to the longitudinal direction of the crane girder. ### Claim 2 (depends on 1) The crane as claimed in claim 1, wherein the two struts of each strut pair each have a cut-out in one of their long sides and the two struts are fitted together by means of the two cut-outs. ### Claim 3 (depends on 2) The crane as claimed in claim 2, wherein the two struts of each strut pair are welded together in the region of the cut-outs. ### Claim 4 (depends on 2) The crane as claimed in claim 2, 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. ### Claim 5 (depends on 4) The crane as claimed in claim 4, 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. ### Claim 6 (depends on 2) The crane as claimed in claim 2, wherein on each long side of the struts, a first recess and a second recess is provided in the main surfaces, and the long sides of at least some of the flat struts are formed without bent edges at least between the first and second recesses. ### Claim 7 (depends on 6) The crane as claimed in claim 6, wherein the long sides are formed without bent edges over their entire length. ### Claim 8 (depends on 7) The crane as claimed in claim 7, wherein the bent edge-free long sides extend exclusively in a plane of the respective main surface. ### Claim 9 (depends on 8) The crane as claimed in claim 8, wherein the long sides of all struts are formed without bent edges. ### Claim 10 (depends on 1) The crane as claimed in claim 1, wherein on each long side of the struts, a first recess and a second recess is provided in the main surfaces, and at least one of the long sides of the struts of a strut pair has bent edges between a crossing region of the struts and the recesses, and comprises a side surface with bent edges which adjoins the main surface and points transversely to the longitudinal direction of the crane girder. ### Claim 11 (depends on 10) The crane as claimed in claim 10, wherein each long side has bent edges between the crossing region and the recesses and comprises a side surface with bent edges which adjoins the main surface. ### Claim 12 (depends on 10) The crane as claimed in claim 10, wherein a further recess on the long side is provided between the crossing region and each side surface. ### Claim 13 (depends on 1) The crane as claimed in claim 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. ### Claim 14 (depends on 1) The crane as claimed in claim 1, wherein the crane comprises two crane girders disposed in parallel with and spaced apart from one another. ### Claim 15 (depends on 2) The crane as claimed in claim 2, wherein the cut-outs extend starting from the respective long side in the direction of a longitudinal axis of the struts ### Claim 16 (depends on 15) The crane as claimed in claim 15, 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. ### Claim 17 (depends on 1) The crane as claimed in claim 1, wherein on each long side of the struts, a first recess and a second recess is provided in the main surfaces, and the long sides of at least some of the flat struts are formed without bent edges at least between the first and second recesses. ### Claim 18 (depends on 17) The crane as claimed in claim 17, wherein the long sides are formed without bent edges over their entire length. ### Claim 19 (depends on 17) The crane as claimed in claim 17, wherein the bent edge-free long sides extend exclusively in a plane of the respective main surface. ### Claim 20 (depends on 17) The crane as claimed in claim 17, wherein the long sides of all struts are formed without bent edges