The invention relates to a suspension device for tracked vehicles, which vehicle comprises at least one pair of track assemblies, where each track assembly of the pair of track assemblies comprises a track support beam, at least one drive wheel, a plurality of support wheels and an endless track, wh
The invention relates to a suspension device for tracked vehicles, which vehicle comprises at least one pair of track assemblies, where each track assembly of the pair of track assemblies comprises a track support beam, at least one drive wheel, a plurality of support wheels and an endless track, wherein the drive wheel and the plurality of support wheels are rotatably secured to the track support beam. The drive wheel is arranged to drive the endless track running over the at least one drive wheel and the plurality of support wheels. The suspension device comprises a first suspension configuration constituting a support wheel suspension configuration configured to resiliently secure the support wheels to the track support beam, and a second suspension configuration configured to connect the track assembly pair with a centrally arranged center beam. The invention also relates to a tracked vehicle.
대표청구항▼
1. A suspension device for a tracked vehicle, which vehicle comprises at least one track assembly pair, where each track assembly of the track assembly pair comprises a track support beam, at least one drive wheel, a plurality of support wheels and an endless track, wherein said at least one drive w
1. A suspension device for a tracked vehicle, which vehicle comprises at least one track assembly pair, where each track assembly of the track assembly pair comprises a track support beam, at least one drive wheel, a plurality of support wheels and an endless track, wherein said at least one drive wheel and said plurality of support wheels are rotatably secured to said track support beam, wherein said at least one drive wheel is arranged to drive said endless track running over the at least one drive wheel and said plurality of support wheels, wherein the suspension device comprises a first suspension configuration constituting a support wheel suspension configuration configured to resiliently secure said support wheels to said track support beam, and a second suspension configuration configured to connect said track assembly pair with a centrally arranged centre beam, and wherein said second suspension configuration comprises a pair of springs for the respective track assembly, which the pair of springs comprises a front strut and a rear strut, and said track assembly pair is configured to be secured to said centre beam via a track assembly suspension configuration comprising said second suspension configuration, wherein said second suspension configuration is constituted by a gas hydraulic suspension configuration, wherein said gas hydraulic suspension configuration comprises a pair of hydraulic cylinders for the respective track assembly, which pair of hydraulic cylinders comprises a front and a rear hydraulic cylinder arranged to be connected such that hydraulic flow is distributed between the front and the rear hydraulic cylinder based on a force acting on the front and rear hydraulic cylinder, respectively. 2. The suspension device of claim 1, wherein said support wheel suspension configuration comprises rocker arms connecting said plurality of support wheels and said track support beam, wherein said rocker arms are configured such that forces acting on said plurality of support wheels cause resilient oscillation of said rocker arms. 3. The suspension device of claim 1, wherein said second suspension configuration is configured to cooperate with said support wheel suspension configuration based on force acting on said track assembly pair. 4. The suspension device of claim 3, wherein said cooperation is arranged to take place such that force acting on said track assembly pair is absorbed by said support wheel suspension configuration and any remaining force transmitted to said track support beam is absorbed by said second suspension configuration. 5. The suspension device of claim 1, wherein said hydraulic flow is arranged to be distributed such that one of said front and rear hydraulic cylinders that absorbs a relatively higher force is compressed and another of said front and rear hydraulic cylinders is correspondingly expanded by hydraulic flow flowing from said one of said front and rear hydraulic cylinders to said another of said front and rear hydraulic cylinders, whereby an angle is formed between said track support beam and said centre beam. 6. The suspension device of claim 1, wherein said front hydraulic cylinder is at one end pivotally connected to a front side region of said centre beam and at an opposing other end of the front hydraulic cylinder to a front region of said track support beam, in connection with a front trailing arm configuration, and wherein said rear hydraulic cylinder at one end is pivotally connected to a rear side region of said centre beam and at an opposing other end of the rear hydraulic cylinder to a rear region of said track support beam. 7. The suspension device of claim 1, further comprising a controller configured to control said hydraulic suspension configuration based on information received from an inclination determining device. 8. The suspension device of claim 7, wherein said controller is configured to control said hydraulic suspension configuration such that a position of the track assemblies relative to the centre beam is adjusted to compensate for inclination. 9. The suspension device of claim 1, wherein said track assembly suspension configuration comprises a front trailing arm configuration and a rear trailing arm configuration for the respective track assembly, wherein the front trailing arm configuration at one end is articulately connected at a lower attachment of a front region of said centre beam and at an opposing other end of the front trailing arm configuration at a front region of said track support beam, and wherein the rear trailing arm configuration at one end is articulately connected at a lower attachment of a rear region of said centre beam and at an opposing end of the rear trailing arm configuration at a rear region of said track support beam. 10. The suspension device of claim 9, wherein at least one of said front and rear trailing arm configurations is formed as an A-arm. 11. The suspension device of claim 1, wherein said track support beam is a skid beam. 12. A tracked vehicle, comprising at least one suspension device of claim 1. 13. The tracked vehicle of claim 12, comprising at least two articulated vehicle units, each of said vehicle units comprising two track assemblies connected to respective sides of a centre beam. 14. The tracked vehicle of claim 13, wherein said tracked vehicle comprises a load-carrying frame pivotally connected to a front vehicle unit via a front vertical steering joint arranged centrally relative to a longitudinal direction of the front vehicle unit and pivotally connected to a rear vehicle unit via a rear vertical steering joint arranged centrally relative to the longitudinal direction of the rear vehicle unit. 15. The tracked vehicle of claim 12, wherein said tracked vehicle is a forestry machine. 16. The tracked vehicle of claim 12, wherein said tracked vehicle is a forwarder. 17. The tracked vehicle of claim 12, wherein said tracked vehicle is hybrid-powered.
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이 특허에 인용된 특허 (5)
Todd, André; Handfield, Robert; Bessette, Robert; Olson, Chad, Anti-torque system for a traction assembly.
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