Advanced method of determination of pressure of caterpillar propellers upon the soil

Abstract

The aim of the work is to substantiate and propose an improved method for determining the pressure of caterpillar propellers on the soil. As it is established application of coefficient of unevenness in case of determination of the maximum pressure allows by 3 times and more to reduce the mistake, work-related to sensors of tension. So, if in a near-contact zone the tension under the caterpillar hinge exceeded the tension operating under the middle of a link twice, then at a depth of 20 cm excess constituted only 8 %. Due to state above it was recommended to develop a method of rational restriction of length diagrams tension and determination of actual length of contact of a caterpillar with the bearing area and taking into account all received results to consider the possibility of entering of an amendment of value coefficient of unevenness of distribution of pressure, received in accordance with GOST 26953-86. As a consequence, it was proposed to amend the p. 3.3.5 and 3.5.1 of GOST 26953-86. The method used in this work is analysis and synthesis, as well as experiment. The result of this work is the proposal to amend GOST 26953-86, which would eliminate the drawbacks in paragraphs 3.3.5 and 3.5.1, where the distance between the axes of the first and the last pressure sensors is equal to the horizontal projection of the distance between the axes of the first and last support rollers and A correction is introduced for the length of the i-th diagrams of the area, length and maximum values of the i-th stress diagram, which are determined from the graphical representations of the stress diagrams with the introduction of corrections.