A suspension system is provided for a vehicle track assembly having a lower front idler wheel, a lower rear idler wheel, an upper drive wheel, a support link, a plurality of lower support wheels arranged between the idler wheels and mounted on the support link, and an endless belt mounted around the
A suspension system is provided for a vehicle track assembly having a lower front idler wheel, a lower rear idler wheel, an upper drive wheel, a support link, a plurality of lower support wheels arranged between the idler wheels and mounted on the support link, and an endless belt mounted around the wheels. The front and rear idler wheels are separated by a length L. An upper belt plane is tangent to one of the idler wheels and the drive wheel and a lower belt plane is tangent to the front idler wheel and the rear idler wheel. The vehicle center of gravity is located a distance H above the lower belt plane. A suspension member pivots about a fixed pivot axis. The components of suspension system are sized and arranged to prevent the vehicle from diving or squatting.
대표청구항▼
I claim: 1. A suspension system for a track assembly of a track laying vehicle, the track assembly having a lower front idler wheel, a lower rear idler wheel, an upper drive wheel, a support link, a plurality of lower support wheels arranged between the idler wheels and mounted on the support link,
I claim: 1. A suspension system for a track assembly of a track laying vehicle, the track assembly having a lower front idler wheel, a lower rear idler wheel, an upper drive wheel, a support link, a plurality of lower support wheels arranged between the idler wheels and mounted on the support link, and an endless belt mounted around the wheels, the front and rear idler wheels being separated by a length L, the track assembly defining an upper belt plane which is tangent to one of the idler wheels and the drive wheel and defining a lower belt plane which is tangent to the front idler wheel and the rear idler wheel, and the vehicle having a center of gravity located a distance H above the lower belt plane, the suspension system comprising: a suspension member pivotal about a pivot axis which is fixed with respect to a frame of the vehicle, the suspension member having a first end coupled to the support link by a resilient member, the suspension member having a second end pivotally coupled to an axle pin defining a rotation axis of one of said idler wheels, and pivotally coupled to an end of the support link, and the rotation axis and the pivot axis defining a suspension axis extending therebetween, the suspension axis and the upper belt plane defining a first angle θ, the suspension axis and the lower belt plane defining a second angle φ, such that (sin φ-sin θ)÷(H/L×cos φ)=1. 2. The suspension system of claim 1, wherein: said one idler wheel is the front idler wheel; the axle pin is a front axle pin defining a rotation axis of the front idler wheel; a front idler link is coupled to the front axle pin; the second end of the suspension member is pivotally coupled to a lower end of the front idler link; and a connecting link has a first end pivotally coupled to the second end of the suspension member and has a second end pivotally coupled to a front end of the support link. 3. The suspension system of claim 2, further comprising: a variable length tensioning member coupled between the suspension member and an upper end of the front idler link. 4. The suspension system of claim 1, wherein: said one idler wheel is the rear idler wheel; the axle pin is a rear axle pin defining a rotation axis of the rear idler wheel. 5. A suspension system for a track assembly of a track laying vehicle, the track assembly having a lower front idler wheel, a lower rear idler wheel, an upper drive wheel, a support link, a plurality of lower support wheels arranged between the idler wheels and mounted on the support link, and an endless belt mounted around the wheels, the front and rear idler wheels being separated by a length L, the track assembly defining an upper belt plane which is tangent to the front idler wheel and the drive wheel and defining a lower belt plane which is tangent to the front idler wheel and the rear idler wheel, and the vehicle having a center of gravity located a distance H above the lower belt plane, the suspension system comprising: a front idler link coupled to a front axle pin defining a rotation axis of the front idler wheel; a suspension member pivotal about a pivot axis which is fixed with respect to a frame of the vehicle, the suspension member having a first end coupled to the support link by a resilient member, the suspension member having a second end pivotally coupled to a lower end of the front idler link; a connecting link having a first end pivotally coupled to the second end of the suspension member and having a second end pivotally coupled to a front end of the support link; and a variable length tensioning member coupled between the suspension member and an upper end of the front idler link, the rotation axis and the pivot axis defining a suspension axis extending therebetween, the suspension axis and the upper belt plane defining a first angle φf, the suspension axis and the lower belt plane defining a second angle φf, such that (sin φf-sin θf)÷(H/L×cos φf)=1. 6. A suspension system for a track assembly of a track laying vehicle, the track assembly having a lower front idler wheel, a lower rear idler wheel, an upper drive wheel, a support link, a plurality of lower support wheels arranged between the idler wheels and mounted on the support link, and an endless belt mounted around the wheels, the front and rear idler wheels being separated by a length L, the track assembly defining an upper belt plane which is tangent to the rear idler wheel and the drive wheel and defining a lower belt plane which is tangent to the front idler wheel and the rear idler wheel, and the vehicle having a center of gravity located a distance H above the lower belt plane, the suspension system comprising: a suspension member pivotal about a pivot axis which is fixed with respect to a frame of the vehicle, the suspension member having a first end coupled to the support link by a resilient member, the suspension member having a second end pivotally coupled to a rear axle pin defining a rotation axis of the rear idler wheel, and pivotally coupled to a rear end of the support link, and the rotation axis and the pivot axis defining a suspension axis extending therebetween, the suspension axis and the upper belt plane defining a first angle θr, the suspension axis and the lower belt plane defining a second angle φr, such that (sin φr-sin θr)÷(H/L×cos φr)=1.
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이 특허에 인용된 특허 (9)
Hiraki, Hikosaburo; Tsubota, Haruhiro; Hori, Kazutoshi, Crawler device for a crawler type vehicle.
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