SU478996A1 - Device for measuring soil deformation under vehicle supports - Google Patents

Description

When the machine is moving along the crushing soil, the deformation of the soil under the machine causes a change in the height h of the mercury column in the corresponding pressure gauge. The magnitude of the soil deformation I but the measured height h of the pillar of mercury is determined as follows: H, .H, - (H, + H,), and // 3 and Yad are constant values, and H4 is determined from the equation: (R4 + / I) Tw / rt. where HC is the density of water, 1 YPT is the density of mercury, 13.6 g / cm, from here it is Lt-Ltv (13.6-1) 12.6 / g.

Soil deformation is equal to:

I, I, (Jaz + 12,6 / g).

For sensors 1-4, the values of HI, YZ and H are set, and therefore the height L of the mercury column in the corresponding gauges is equal to H4 / 12.6 cm. In the case when the values of X, Hz and H for the indicated sensors are equal, and on the horizontal non-deformable plate, hell, height h in all four gauges will be the same. When the machine rolls, the Hi values for sensors 1 and 2 (or 3 and 4) are different, and the difference between them, determined by the angle of heel, will lead to a change in the height h of the mercury columns in the corresponding pressure gauges.

At least one more sensor is needed to determine trim. A device for measuring soil deformation under vehicle supports is equipped with vertical displacement sensors made in the form of tanks with a constant level of fluid and hydraulically connected to a manometer block, characterized in that in order to enable measurements to be made while the vehicle is running and to determine its position relative to the ground surface, it is equipped with skis towed by the vehicle placed on their part sensors, another of which, in an amount not less than three, the frame is installed na

vehicle and is not located on the same line. on the frame, but not on the same line with the first two. The readings of all gauges 18 are recorded by the movie camera 20 with a given shooting frequency, determined by the speed at which the machine is moving. At the same time, the frame records the readings of the frame counters, the stopwatch, and the arrow indicators of the torque values on the shafts of the driving sprockets of the experimental machine. The proposed device makes it possible to obtain, with great reliability and a high degree of accuracy, the magnitudes of the soil deformations under the supports of the moving machine and to determine its spatial position relative to the soil surface. Subject invention