The chassis of an unmanned tractor for precision farming tasks

Currently, the use of measuring methods and laser scanning tools is one of the most relevant and priority areas for solving the problems of monitoring and evaluation of forest plantations. Such measurement can be performed independently or in combination with aerial video shooting, and can also be carried out by ground-based studies on test areas. According to a number of indicators, laser scanning surpasses others known today, such as aerial photography, earth sounding, etc., remote methods for assessing the qualitative and quantitative characteristics of the forest fund. The use of aerial and ground-based monitoring of forest areas with the use of lasers makes it possible to achieve high accuracy in determining the main forest taxational parameters. It is advisable to use the formed methodological principles and techniques when developing specific methods for determining indicators as separate factors determining the appropriate types of forest accessibility.

Section: Resultsmentioning

confidence: 99%

Application of unmanned aircraft vehicles and techniques ground laser scanning for measurement of dimensional and quality indicators of tree stand

Duhovnik,

Voinash,

Kalimullin

et al. 2024

“…1 by the absence of constant velocity joints in the design of the drive of the front drive wheels. Such trends are described in relation to agricultural, industrial, forestry wheeled vehicles (see, for example, sources [1][2][3][4][5][6][7][8][9], etc. ).…”

mentioning

confidence: 99%

Expanding the technological capabilities of the integral tractor chassis by reversing the transmission

Dobretsov,

Fimushin,

Karnaukhov

et al. 2023

The aim of the work is to find technical solutions that provide a complete reversal of the transmission on the example of an integral tractor, while allowing maximum use of commercially available units or installed as an option for a serial machine. The objects of study are mainly the chassis of a wheeled integral tractor designed for agriculture. The relevance of creating fully reversible transmissions for integral tractors and other agricultural, road-building and transport machines is shown. The variants of installation places for the reverse gear are considered, the features of loading and the principles of designing the reverse gear for specific placement points are analyzed. The most promising options for the case of an integral tractor based on a serially produced chassis were chosen - placement of a controlled power distribution mechanism in the rear axle gear housing or instead of wheel gears. Kinematic schemes and a technique for determining gear ratios and kinematic parameters are proposed. The reverse gear control technologies and the technological base for the design and manufacture of such mechanisms are indicated: when designing an integral tractor in accordance with the principle of maximum unification with a serial chassis, it is advisable to place the reverse gear in the drive axle housing; when developing an original reverse transmission and a new carrier system, the reverse gear should be located in front of the gearbox; in the design of the reverse gear, it is preferable not to use a blocking clutch, replacing it with a planetary gear set and a brake.

Determination of the vehicle's carrying capacity taking into account the bearing capacity of the roads

Nuretdinov,

Galiyev,

Kalimullin

et al. 2024

Increasing the efficiency of using the technical parameters of trucks, in order to save resources, remains an urgent task in the operation of vehicles. Maximum vehicle performance is achieved when the vehicle's rated payload capacity is used to its full potential. As practice shows, due to the regulation of weight parameters, the actual carrying capacity, and, consequently, the performance of the vehicle is reduced. The increased load leads to the destruction of the road surface, therefore, for exceeding the standard values of the weight parameters of the car, carriers are subject to administrative punishment in the form of a fine. The actual task is to determine the actual load capacity of the vehicle when the limit value of the axle load according to the regulatory document is ensured. This paper proposes a method for determining the carrying capacity of road trains consisting of a truck tractor and a semi-trailer, taking into account the bearing capacity of highways. When determining the actual mass of the transported cargo, the maximum permissible values of the total mass and axle load of the vehicle were taken into account, which depend on the category of the road, as well as on the design features of the vehicle (type of suspension, wheels, center distance).