DOLLY SYSTEM

摘要

A dolly system is disclosed, which overcomes drawbacks related to unwanted noise and jerks of prior art dolly systems. The dolly system comprises wheel assemblies (130) that have independently rotating lateral support wheels (132, 133) in combination with a center wheel (131) that interact with a continuous resilient element (122) when rolling along a rail track, without encountering any gaps or bumps and without producing squeal noise due to so-called wheel-climbing that may occur in curves along the rail track.

主权项

1. A dolly system comprising:
a dolly platform, a rail assembly comprising:
at least one elongated rail section configured to be joined together to form a rail track,an elongated continuous resilient element configured to be attached to the at least one rail section along the rail track,at least one wheel assembly configured to be attached to the dolly platform and configured to roll along the rail track on top of the elongated continuous resilient element, said wheel assembly comprising:
a center wheel configured to support the dolly platform in a vertical direction, z,a first lateral support wheel and a second lateral support wheel configured to support the dolly platform in a horizontal direction, x, where:the first lateral support wheel and the second lateral support wheel arranged concentrically and on either side with respect to the center wheel, and wherein:the first lateral support wheel and the second lateral support wheel have a respective radial extension, r1, r2, that are larger than a radial extension, r0, of the center wheel; andthe first lateral support wheel and the second lateral support wheel are configured to rotate independent of each other and independent of the center wheel.