# US 10,766,548 B2 · Track wheel suspension for a construction machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,548 B2 - Document ID: US10766548B2 - Status: Granted - Kind: B2 - Application number: 15/805,082 - Filed: 2017-11-06 - Published: 2018-06-28 - Granted: 2020-09-08 - Earliest claimed: 2016-12-23 - Assignees: Guangxi LiuGong Machinery Co., Ltd. - Applicants: Guangxi Liugong Machinery Co., Ltd. - Inventors: Edward Wagner - Web page: https://patentgrep.com/patent/US10766548B2 ## CPC - B62D 55/104: Suspension devices for wheels, rollers, bogies or frames (vehicle suspension in general B60G) - B62D 55/1083: {Torsion-bar springs} - B62D 55/1086: {Rubber springs} - E02F 9/02: Travelling-gear, e.g. associated with slewing gears ({drives therefor E02F9/20}; for motor vehicles B60B, B60G; undercarriages for locomotives or railroad cars B61F; track-laying vehicles B62D; for cranes B66C23/18) - 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) - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) ## Abstract A track wheel suspension for a construction machine is provided including a track wheel engageable to a track, a swing device, a swing bar and a restraining mechanism for at least restraining a movement of the swing device about a swing axis in at least a first direction. ## Claims ### Claim 1 A construction machine comprising: a track wheel suspension including a track wheel configured and arranged to be engageable to a track, a swing device comprising a first coupling portion and a second coupling portion, the first coupling portion being configured and arranged to rotatably support the track wheel, a swing bar comprising a first bar end, the first bar end being configured and arranged to be mounted to the second coupling portion of the swing device, the swing bar configured and arranged to provide a swing axis, wherein the swing axis is offset from a rotation axis of the track wheel such that a swing movement of the swing device enables a movement of the track wheel in a direction which is substantially perpendicular to the rotation axis, and a restraining mechanism configured and arranged to at least restrain a movement of the second coupling portion about the swing axis in at least a first direction, wherein the restraining mechanism is configured and arranged to force-transmittingly couple with at least one of one or more restraining portions of the swing bar so that movement of the at least one of the one or more restraining portions of the swing bar about the swing axis is restrained, wherein the restraining mechanism is configured and arranged to releasably lock at least one of the one or more restraining portions of the swing bar into a predetermined position, and wherein the restraining mechanism is configured and arranged to selectively provide a positive fit connection with the swing bar at the at least one of the one or more restraining portions of the swing bar during operation of the track wheel suspension. ### Claim 2 (depends on 1) The construction machine according to claim 1, wherein at least one of the one or more restraining portions comprises an engaging section integrally formed on the swing bar. ### Claim 3 (depends on 1) The construction machine according to claim 1, wherein at least one of the one or more restraining portions comprises an engaging element fixedly coupled to the swing bar. ### Claim 4 (depends on 1) The construction machine according to claim 1, wherein one restraining portion of the one or more restraining portions is provided on a second bar end of the swing bar. ### Claim 5 (depends on 1) The construction machine according to claim 1, wherein one restraining portion of the one or more restraining portions is provided on the first bar end of the swing bar. ### Claim 6 (depends on 1) The construction machine according to claim 1, further comprising a swing bar housing arranged for accommodating and rotatably supporting the swing bar, wherein at least one elastic element is placed between an outer bar surface of the swing bar and an inner housing surface of the swing bar housing. ### Claim 7 (depends on 1) The construction machine according to claim 1, wherein the track wheel is formed as a leading or trailing track wheel of multiple track wheels of a construction machine. ### Claim 8 (depends on 1) The construction machine according to claim 1 comprising a machine body carried by at least one pair of tracks and the track wheel suspension. ### Claim 9 (depends on 8) The construction machine according to claim 8, wherein at least a leading track wheel of multiple track wheels for each track is carried by the track wheel suspension. ### Claim 10 (depends on 8) The construction machine according to claim 8, wherein each track wheel of the construction machine is supported by the track wheel suspension. ### Claim 11 (depends on 8) The construction machine according to claim 8, further comprising an actuator for actuating the restraining mechanism, the actuator being manually operable and/or automatically operable by means of a control system. ### Claim 12 (depends on 11) The construction machine according to claim 11, wherein the actuator is configured to simultaneously operate each restraining mechanism. ### Claim 13 (depends on 1) The construction machine according to claim 1, wherein one restraining portion of the one or more restraining portions is provided on a second bar end of the swing bar. ### Claim 14 (depends on 1) The construction machine according to claim 1, wherein one restraining portion of the one or more restraining portions is provided on the first bar end of the swing bar. ### Claim 15 (depends on 1) The construction machine according to claim 1, further comprising a swing bar housing arranged for accommodating and rotatably supporting the swing bar, wherein at least one elastic element is placed between an outer bar surface of the swing bar and an inner housing surface of the swing bar housing. ### Claim 16 (depends on 1) The construction machine according to claim 1, further comprising: a swing bar housing, the swing bar housing being configured and arranged for accommodating and rotatably supporting the swing bar, wherein the swing bar housing includes multiple cutouts along a longitudinal outer surface of the swing bar housing configured and arranged to connect with the one or more restraining mechanisms. ### Claim 17 (depends on 16) The construction machine according to claim 16, wherein the one or more restraining mechanisms are configured and arranged to force-transmittingly couple with at least one of one or more restraining portions of the swing bar so that movement of at least one of the one or more restraining portions of the swing bar about the swing axis is restrained. ### Claim 18 (depends on 17) The construction machine according to claim 17, wherein the one or more restraining mechanisms are configured and arranged to releasably lock at least one of the one or more restraining portions of the swing bar into position. ### Claim 19 (depends on 17) The construction machine according to claim 17, wherein the one or more restraining mechanisms comprise an engaging member configured and arranged to directly or indirectly establish a form-fit coupling with at least one of the one or more restraining portions of the swing bar. ### Claim 20 (depends on 17) The construction machine according to claim 17, wherein at least one of the one or more restraining portions comprises one or more engaging elements fixedly coupled to the swing bar.