EXPERIMENTAL INVESTIGATION OF WHEEL EXTENSION, INSTALLED TO THE MOVEMENT DIRECTION

Abstract

The article considers the use of trains as an effective means of reducing the number of vehicles while preserving volumes of cargo transportation. Moreover, trailed trains have received a significant recognition and the most common in providing transportation of goods. Therefore, improving the performance of trains in modern conditions of traffic is one of the priority tasks to ensure a high level of safety of their operation with the maximum efficiency of use. Achievement of these requirements is possible only subject to consideration of possible changes in the technical condition of trains in the process of operation. In particular, the presence of distortion of the axes of the links of the automobile train causes the appearance of additional forces and a change in the nature of the distribution of reactions in the field of contact of tires with the support surface. As a result, traction-velocity properties and fuel efficiency of trains vary, which depend directly on the nature of the interaction of wheels with the support surface.
The analysis of sources of information on the influence of changes in the angle of installation of bridges of sections of trains on its operational properties has been carried out. This problem is most relevant for multi-faceted vehicles.
In the case of distortion of the bridges of an automobile train, additional forces are in contact with the wheels with the road due to differences in the plane of the location of the longitudinal axis of the train, the rotation and rolling of the wheel.
The analysis of statistics indicates the existing structural defects of the relevant parts and units, or the poor road condition, or unskilled driving, or other violations that result in sudden failures.
The purpose of the work is an experimental study of the rolling resistance of the wheel, set at an angle to the longitudinal vertical plane, simulating the tilting axis of the vehicle (trailer).
The order of carrying out of experimental research is described, results are given on determining the rolling resistance of the wheel, set at an angle to the longitudinal vertical plane.