Tracked vehicle

Patent metadata

Field	Value
Publication number	US-11319004-B2
Application number	US-201816493257-A
Country	US
Kind code	B2
Filing date	Feb 26, 2018
Priority date	Mar 16, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

The invention relates to a tracked vehicle (V1, V2) comprising a vehicle body (20; 120), at least one track assembly (10) and a suspension device (S). Said track assembly (10) is arranged to be supported by said vehicle body (20; 120) by means of said suspension device (S). Said track assembly comprises a track support beam (12) for supporting a plurality of road wheels (16), an endless track (14) being disposed around said road wheels. Said suspension device (S) comprises a leaf spring arrangement (30; 130, 142, 144) having portions transversally arranged relative to the longitudinal extension of the vehicle. Said leaf spring arrangement comprises L-shaped leaf spring members (30; 130), each leaf spring member (30; 130) having a first portion (32; 132) attached to said vehicle body (20; 120), a second portion (34; 134) attached to said track support beam (12) and a transition portion (36; 136) there between, so that compressive and tensile stresses are located to said transition portion (36; 136) for generating a compressive action in said transition portion.

First claim

The invention claimed is:

1. A tracked vehicle comprising a vehicle body, at least one track assembly and a suspension device, wherein said track assembly is arranged to be supported by said vehicle body by means of said suspension device, said track assembly comprising a track support beam for supporting a plurality of road wheels, an endless track being disposed around said road wheels, said suspension device comprising a leaf spring arrangement having portions transversally arranged relative to the longitudinal extension of the vehicle, wherein said leaf spring arrangement comprises L-shaped leaf spring members, each leaf spring member having a first portion attached to said vehicle body, a second portion attached to said track support beam and a transition portion there between, so that compressive and tensile stresses are located to said transition portion for generating a compressive action in said transition portion.

2. The tracked vehicle according to claim 1 , wherein said first portion of said L-shaped leaf spring member is arranged to run essentially upwardly from said transition portion and said second portion of said L-shaped leaf spring member is arranged to run essentially transversally relative to the longitudinal extension of the vehicle and outwardly from said transition portion.

3. The tracked vehicle according to claim 1 , wherein, when said second portion of said L-shaped leaf spring member subjected to an upward force from underneath, said compressive action is generated in said transition portion.

4. The tracked vehicle according to claim 1 , wherein said L-shaped leaf spring members are laminated multilayer leaf spring members.

5. The tracked vehicle according to claim 1 , wherein said L-shaped leaf spring members are made of composite material.

6. The tracked vehicle according to claim 1 , wherein said L-shaped leaf spring members are made of a steel material.

7. The tracked vehicle according to claim 1 , wherein said first portion of said L-shaped leaf spring member and said second portion of said L-shaped leaf spring member forms an angle there between in the range of 45 to 120 degrees.

Assignees

• Bae Systems Haegglunds Ab

Inventors

• Sandin Anders
• Ljung Jonny
• Wiberg Ulf

Classifications

• B60G2300/32

  Track vehicles · CPC title

• B60G11/08

  arranged substantially transverse to the longitudinal axis of the vehicle · CPC title

• B62D55/108 Primary

  with mechanical springs, e.g. torsion bars · CPC title

• B60G2202/114

  transversally arranged · CPC title

• B60G2206/428

  Leaf springs · CPC title