The experimental research results obtained by operating the sowing machine-and-tractor unit equipped with elastic-damping mechanism which changes transmission properties, makes it compliant and, therefore, absorbing vibrations of the external disturbing influences, are dealt with in this article. Several performances of a unit with more rigid transmission are given as a comparison. The given correlation functions and spectral densities of the process show an evident improvement of operating characteristics.
The eccentric tool tightening chuck with two cinematic circuits «wedge-eccentric cam» and an intensifying link was offered. Two stages of work of the eccentric boring-and-milling chuck (EBMC), which provide the creation of necessary force for tool clamping, were shown. Adduced were the calculation and function-structural diagrams and conditions for definition of reinforcement coefficients of EBMC due two cinematic circuits in order to receive the necessary radial tool clamping force from one eccentric.
The influence of grain cleaning machines' performance on their qualitative operating indices is analyzed. According to the research results the use of factional grain cleaners in agricultural enterprises is recommended.
On the basis of an improved device for increasing cross-country ability of wheeled tractors an automatic system is developed which allows to increase productivity and efficiency of a transport unit.
The failure-free performance of engines for mobile energetic transport vehicles used in agriculture is analysed. Some recommendations for use are made.
The functioning of the group of technical equipment is examined, the duration of its no-failure operation is determined by one of its components, and long-term performance is ensured by replacing the failed component by the spare one. Relations are obtained for calculating the average total operating time of the group of technical equipment with spare components by their work during the random allotted time, with and without taking into account the time of replacing the failed component.
The theoretical grounding of constructive and regime parameters of digging up and separating device is given. The scheme and technological process of work of digging up and separating device are represented. The rod of rotor's and beater's trajectory of movement, force ensuring the picking of bulb leafs, and geometrical parameters of digging up and separating device are grounded.
The principle of additional regulation of the multithread mechanical stepless transmission of impulse type is considered due to change of size of radius of a crank depending on external loading at work together with the diesel engine equipped with centrifugal governor. The circuit of system of automatic control of the transmission is offered providing work of the engine under the characteristic of the minimal charge of fuel at incomplete use of capacity in a wide range of revolutions of crankshaft.
It is proposed to estimate the machine-and-tractor unit's load distribution through the control of state of metal coat used as a sensor. The possibility of applying the existing method to solve this problem is examined. The computer modeling results are shown.
The necessity of research of possibility of a three-product hydrocyclone application for the clearing of cleaning solutions is grounded. Its work automation method and research laboratory plant are described. The possibility of use of the electric pickup for hydrocyclone work automation is proved experimentally. The interelectrode space resistance change dependances on temperature, cleaning liquid and oils density in solution, electrode area and clearance in it are given. The pickup electrodes' parameters are grounded.
Design data and operating modes of the small-sized experimental plant working on a principle of squeezing and squashing various crops' grain are analyzed and proved. By means of experimental investigation, quality of crushing and rational operating mode of the device are estimated. Economic expediency of application of the device in small farm enterprises is determined.