The influence of operational factors and constructive parameters of low-weight trains on the strength and reliability of the frames uniaxial trailers

Abstract

The development of small business and entrepreneurship in the country has led to an increase in the need for trailers used in conjunction with cars and light-duty vehicles. This circumstance sets the task of increasing the production of trailers of this type, reducing the design time and start production of new models. At the same time the bearing design of each product has to possess high durability, durability and to provide safe movement of the low-tonnage automobile train as a whole.

A feature of the supporting structure of a single-axle trailer is the presence of a drawbar, which receives part of the weight of the trailer link with the transported load, and provides a connection between the tractor and the trailer. In this regard, the drawbar of the trailer has high requirements for strength and durability. The difference in the design of the drawbar of a single-axle trailer from the frame of heavy-duty vehicles does not allow the use of traditional methods and ways to increase the strength and durability of this element, which will inevitably increase the size of the drawbar, its weight and cost, which is absolutely unacceptable in mass production.

The above circumstances indicate the relevance of methods for optimizing the mass, geometric parameters and elastic characteristics of the suspension of single-axle trailers under typical operating conditions of low-capacity road trains, taking into account the design features of the drawbar.

Keywords: low-tonnage road train, trailer link, design parameters, LOADING MODES, drawbar, loading modes, strength, durability.