# US 9,751,730 B2 · Crane, in particularly overhead crane or gantry crane, comprising at least two crane girders > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,730 B2 - Document ID: US9751730B2 - Status: Granted - Kind: B2 - Application number: 14/433,076 - Filed: 2013-10-04 - Published: 2015-09-24 - Granted: 2017-09-05 - Earliest claimed: 2012-10-09 - Assignees: Terex MHPS GmbH - Applicants: Terex MHPS GmbH - Inventors: Christoph Paβmann; Richard Kreisner; Thomas Schlierbach-Knobloch - Web page: https://patentgrep.com/patent/US9751730B2 ## 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) - B66C 19/00: 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) - 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) ## Abstract The invention relates to a crane, in particular an overhead crane or gantry crane, having at least two crane girders that extend horizontally in a longitudinal direction. The crane is designed as trussed girders and each girder includes an upper run with a moveable crane trolley and lifting gear. Each crane girders is composed of two upper run profiles that are connected together via a running rail for the crane trolley. By way of such a design, particularly simple assembly of the crane girders or of the crane can be achieved. Therefore, commercially available, conventional structural steel can be used for the upper run, from which the upper run is produced in a simple manner in terms of manufacturing technology by simple connection to a corresponding running rail. ## Claims ### Claim 1 A crane comprising: at least two crane girders that extend horizontally in a longitudinal direction, wherein the girders are designed as trussed girders and each includes an upper run configured to support a movable crane trolley having a lifting gear, wherein the upper runs are each composed of a first upper run portion and a second upper run portion, which two upper run portions are connected together by a running rail positioned atop and spanning a gap defined between the two upper run portions of each upper run. ### Claim 2 (depends on 1) The crane of claim 1, wherein the upper run portions each comprise a horizontal flange and in each case the running rail is attached to upper sides of two adjacent flanges in order to connect the upper run portions of one of the upper runs. ### Claim 3 (depends on 2) The crane of claim 2, wherein the upper run portions are formed as angular profile girders and each include a vertical web adjoining the respective flange. ### Claim 4 (depends on 3) The crane of claim 3, wherein the crane girders designed as trussed girders comprise struts and posts that each have upper apertures, into which the vertical webs protrude. ### Claim 5 (depends on 2) The crane of claim 2, wherein the running rail is arranged centrally between the upper run portions. ### Claim 6 (depends on 2) The crane of claim 2, wherein the upper run portions are formed as angular profile girders and each include a vertical web adjoining the flange. ### Claim 7 (depends on 6) The crane of claim 6, wherein the vertical webs extend in parallel with each other and are spaced apart from each other by the gap. ### Claim 8 (depends on 2) The crane of claim 2, wherein the running rail is welded to the upper run portions. ### Claim 9 (depends on 1) The crane of claim 1, wherein the running rail is arranged centrally between the upper run portions. ### Claim 10 (depends on 9) The crane of claim 9, wherein the upper run portions are formed as angular profile girders and each include a vertical web adjoining the flange. ### Claim 11 (depends on 10) The crane of claim 10, wherein the vertical webs extend in parallel with each other and are spaced apart from each other by the gap. ### Claim 12 (depends on 9) The crane of claim 9, wherein the running rail is welded to the upper run portions. ### Claim 13 (depends on 1) The crane of claim 1, wherein the running rail is produced from a solid material. ### Claim 14 (depends on 1) The crane of claim 1, wherein the running rail has a rectangular cross-section. ### Claim 15 (depends on 1) The crane of claim 1, wherein the running rail is welded to the upper run portions. ### Claim 16 A crane comprising: at least two crane girders that extend horizontally in a longitudinal direction, wherein the girders are designed as trussed girders and each includes an upper run configured to support a movable crane trolley having a lifting gear; wherein the upper runs are each composed of a first upper run portion and a second upper run portion; a running rail positioned atop and spanning between the two upper run portions of each upper run, wherein the two upper run portions are connected together by the running rail; wherein the upper run portions are formed as angular profile girders and each include a vertical web adjoining a horizontal flange; and wherein the vertical webs extend in parallel with each other, are spaced apart from each other by a gap, and the gap is bridged by the running rail. ### Claim 17 (depends on 16) The crane of claim 16, wherein the crane girders designed as trussed girders comprise struts and posts that each have upper apertures, into which the vertical webs protrude. ### Claim 18 (depends on 16) The crane of claim 16, wherein the running rail is arranged centrally between the upper run portions, and wherein the crane girders designed as trussed girders comprise struts and posts that each have upper apertures, into which the vertical webs protrude. ### Claim 19 (depends on 18) The crane of claim 18, wherein the upper run portions each comprise a horizontal flange and in each case the running rail is attached to upper sides of two adjacent flanges in order to connect the upper run portions of one of the upper runs. ### Claim 20 A crane comprising: at least two crane girders that extend horizontally in a longitudinal direction, wherein the girders are designed as trussed girders and each includes an upper run configured to support a movable crane trolley having a lifting gear; wherein the upper runs are each composed of a first upper run portion and a second upper run portion; a running rail positioned atop and spanning between the two upper run portions of each upper run, wherein the two upper run portions are connected together by the running rail; wherein the upper run portions are formed as angular profile girders and each include a vertical web adjoining a horizontal flange; and wherein the crane girders designed as trussed girders comprise struts and posts that each have upper apertures, into which the vertical webs protrude.