# US 2023/0406426 A1 · Track running gear and civilian tracked vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0406426 A1 - Document ID: US20230406426A1 - Status: Published application - Kind: A1 - Application number: 18/334,620 - Filed: 2023-06-14 - Published: 2023-12-21 - Earliest claimed: 2022-06-15 - Assignees: KäSsbohrer GeläNdefahrzeug AG - Applicants: Kässbohrer Geländefahrzeug AG - Inventors: Alexander FINK; Stefan HECHT; Marius HOLDER - Web page: https://patentgrep.com/patent/US20230406426A1 ## CPC - B62D 55/06: with tracks without ground wheels - B62D 55/244: {Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements} - B62D 55/24: of continuously flexible type, e.g. rubber belts - B62D 55/30: Track-tensioning means - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract A track running gear for a track chassis of a civilian tracked vehicle, having a rubber continuous track guided circumferentially over an end drive wheel, an opposite tension wheel and over a plurality of running wheels. Each of the running wheels touches a lower strand of the rubber continuous track. At least two of the running wheels touch an upper strand, which upper strand is located opposite the lower strand, of the rubber continuous track. ## Claims ### Claim 1 A track running gear for a track chassis of a civilian tracked vehicle, comprising: a rubber continuous track guided circumferentially over an end drive wheel, an opposite tension wheel and over a plurality of running wheels, wherein each of the running wheels touches a lower strand of the rubber continuous track; and at least two of the running wheels, in particular at least in a state located on even underlying ground, of the track running gear, touch an upper strand, located opposite the lower strand, of the rubber continuous track. ### Claim 2 (depends on 1) The track running gear according to claim 1, wherein at least one of the running wheels has an external annular profiling provided to laterally guide the rubber continuous track in a positive-locking manner. ### Claim 3 (depends on 1) The track running gear according to claim 1, wherein an inner toothing of the rubber continuous track has a large number of track brackets arranged with spacing from each other in a circumferential direction, the track brackets externally flanking the tension wheel and the drive wheel and engaging in an annular groove, the annular groove acting as an annular profiling, of the running wheels for laterally guiding the rubber continuous track. ### Claim 4 (depends on 3) The track running gear according to claim 3, wherein a tooth of the inner toothing is constructed in the circumferential direction between two adjacent intermediate tooth spaces of the inner toothing, the tooth being flanked by webs of a track bracket, respectively. ### Claim 5 (depends on 4) The track running gear according to claim 4, wherein the intermediate tooth spaces completely extend through a base member of the rubber continuous track in a vertical direction. ### Claim 6 (depends on 5) The track running gear according to claim 5, wherein the base member comprises an elastomer matrix, in particular made from a rubber material. ### Claim 7 (depends on 6) The track running gear according to claim 6, wherein, in order to transmit drive forces, the base member comprises a reinforcement device embedded in the elastomer matrix, in particular completely. ### Claim 8 (depends on 7) The track running gear according to claim 7, wherein the reinforcement device comprises a large number of core members, in particular made of steel, each core member extending transversely relative to the circumferential direction. ### Claim 9 (depends on 8) The track running gear according to claim 8, wherein the core members are arranged equidistantly to each other in the circumferential direction in an alternating manner with the intermediate tooth spaces of the inner toothing. ### Claim 10 (depends on 1) The track running gear according to claim 1, wherein the track running gear further includes at least one double axle arrangement, the double axle arrangement comprising an axle carrier and a running wheel pair with two of the running wheels, wherein the axle carrier has a suspension device for connecting the double axle arrangement to a carrier frame of the tracked vehicle in a rotationally movable manner, and wherein the two running wheels of the running wheel pair are supported in a rotationally movable manner on the axle carrier with radial spacing from each other. ### Claim 11 (depends on 10) The track running gear according to claim 10, wherein the axle carrier extends in a longitudinal direction of the track running gear between a first carrier end and a second carrier end and the suspension device is arranged, in particular centrally, between the carrier ends, wherein in a region of the carrier ends one of the running wheels of the running wheel pair is supported in a rotationally movable manner relative to the axle carrier. ### Claim 12 (depends on 1) The track running gear according to claim 1, wherein at least one of the running wheels is constructed in an axially divided manner. ### Claim 13 A civilian tracked vehicle, in particular for use on a construction site, comprising: a carrier frame; and a track chassis having a track running gear at opposite sides of the carrier frame, the track running gear comprising a rubber continuous track guided circumferentially over an end drive wheel, an opposite tension wheel and over a plurality of running wheels, wherein each of the running wheels touches a lower strand of the rubber continuous track, and at least two of the running wheels, in particular at least in a state located on even underlying ground, of the track running gear, touch an upper strand, located opposite the lower strand, of the rubber continuous track. ### Claim 14 (depends on 13) The civilian tracked vehicle according to claim 13, wherein a body structure is arranged on the carrier frame, a driver's cab is arranged on the body structure or on the carrier frame in a manner offset relative to the body structure in a longitudinal vehicle direction, and the body structure is supported about at least one body rotation axis in a pivotable and/or rotatable manner relative to the carrier frame.