PROGRESSIVE RATE SUSPENSION FOR AGRICULTURAL VEHICLE

摘要

A suspension apparatus connected to a wheel of a vehicle and includes a first linkage, a second linkage, a third linkage, a bell crank, and a shock absorber. The first linkage connects to the wheel. The second linkage includes a first portion that is pivotally connected to a second portion of the first linkage. The third linkage includes a first portion that is pivotally connected to a second portion of the second linkage. The bell crank includes opposed first and second arms and a central pivot connection to the third linkage, wherein the first arm is pivotally connected to a first portion of the first linkage. The shock absorber has a variable length and includes a first portion that is pivotally connected to the first portion of the third linkage and wherein a second portion of the shock absorber is pivotally connected to the second arm of the bell crank.

主权项

1. A suspension apparatus configured for connection to a ground-engaging wheel of a device, the apparatus comprising:
a first linkage comprising opposed first and second portions, the first linkage configured for connection to the ground-engaging wheel; a second linkage comprising opposed first and second portions, wherein the first portion of the second linkage is pivotally connected to the second portion of the first linkage; a third linkage comprising opposed first and second portions, wherein the first portion of the third linkage is pivotally connected to the second portion of the second linkage; a bell crank comprising opposed first and second arms and a central pivot connection to the third linkage, wherein the first arm is pivotally connected to the first portion of the first linkage at a first pivot connection; and a shock absorber of variable length comprising opposed first and second portions, wherein the first portion of the shock absorber is pivotally connected to the first portion of the third linkage and wherein the second portion of the shock absorber is pivotally connected to the second arm of the bell crank at a second pivot connection.