详情

原文传递 AT LONG LST

题名：	AT LONG LST
正文语种：	eng
摘要：	The longer semi-trailer (LST) trials commenced in 2012 and involved 14.6m and 15.65m trailers, equating respectively to total vehicle lengths of 17.5m and 18.55m. One of the non-negotiable technical requirements of LSTs is when connected to a tractor unit they meet the standard minimum turning circle requirement as set out in UK Construction and Use (C&U) regulations. That means that articulated vehicles with an overall length of 15.5m or less must be able to turn within concentric circles with radii of 12.5m and 5.3m. Steering axles have become synonymous with LSTs. But as trailer manufacturer Don-Bur's technical support specialist and marketing manager Richard Owens points out, they were not a DfT minimum requirement for this type of trailer. He explains: "To maintain standard C&U turning circles, a wheelbase of 8,135mm cannot be exceeded, although there can be an increased tail swing of up to 0.74m. A quirk in the C&U regulations allowed a standard single bogie to be split into two: a forward tandem axle bogie with an 18-tonne capacity and an added single axle bogie set further back, rated at 10 tonnes, so a rear-steer axle has been the solution. The steered rear axle is typically needed to firstly ensure the trailer continues to pivot around the front tandem axle bogie and secondly to overcome the huge tyre scrub the rearmost axle would otherwise have to endure."
出版年：	2023
期刊名称：	Transport engineer
期：	Nov.
页码：	10-12