Caster wheel assembly of a pickup for an agricultural machine
A caster wheel assembly of a pickup for an agricultural machine, comprising a wheel on a carrier shaft mounted rotatably within a bushing of a pickup arm. The wheel being biased by a spring to be oriented in a predetermined direction relative to the pickup arm. The spring is mounted over the pickup arm between a first arm fixed to the carrier shaft and a second arm fixed to the pickup arm.
1. A caster wheel assembly of a pickup for an agricultural machine, comprising:
a wheel on a carrier shaft mounted rotatably within a bushing of a pickup arm, the wheel biased by a spring to be oriented in a predetermined direction relative to the pickup arm, wherein the spring is mounted over the pickup arm between a first arm fixed to the carrier shaft and a second arm fixed to the pickup arm, wherein the point of connection of the spring to the first arm is arranged at a height above the pickup arm lower than the height of the point of connection of the spring to the second arm.
2. The caster wheel assembly according to claim 1 , wherein the spring is mounted to a protrusion extending above the first arm.
3. The caster wheel assembly according to claim 1 , wherein the first arm is a rod.
4. The caster wheel assembly according to claim 1 , wherein the first arm is a plate.
5. The caster wheel assembly according to claim 1 , wherein the spring is mounted releasably to the arms.
6. The caster wheel assembly according to claim 1 , wherein a point of contact between the wheel and the ground lies in line with a projection of an axis of the carrier shaft.
7. The caster wheel assembly according to claim 1 , wherein a point of contact between the wheel and the ground is offset from a point of a projection of an axis of the carrier shaft onto the ground.