|
|
|
|
|
Ishpekov, Stoyan Savov. |
The objective of the study was determination the release of seeds, caused by а lateral mechanical impact for feeding sesame stems into harvester in order to define the conditions for reducing losses. An experimental unit for simulating mentioned impact has been created. The percentage of releasing seeds depending on acceleration and the height of application point of the impact on single stem has been determined. It was found that the feeding of sesame stem into harvester can be achieved by a lateral impact with acceleration up to 0.5 m.s-2 and speed up to 1.05 m.s-1, if the application point has height 0.6 m from the soil surface. This impact causes up to 5% release of seeds from hybrid 27 when their moisture is 6.2%. The percentage of the seeds releasing... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural engineering Sesame seed loses; Mechanization. |
Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4265 |
| |
|
| |
|
|
Ishpekov, Stoyan Savov. |
The investigation aims at modelling the dynamics of rotational vibration generator, which is widely used for driving flow fruit detachers at harvesting of many crops like grape, tomatoes, blueberries, raspberries, chokeberry, black currant, sesame seeds etc. The research on this model has been digitally performed by software, written in FORTRAN and by using the LabView environment as input-output interface. Identification of unknown model coefficients has been carried and their influence upon precision of the model has been determined. The effect of vibration generator parameters upon its dynamic characteristics has been defined. The synthesized model reaches a relative error for the carrier angular amplitude of 0.48 % compared to the one, determined by an... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural engineering flow fruit detacher; Rotation vibration generator; Modelling. |
Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3940 |
| |
|
|
Ishpekov, Stoyan Savov. |
The objective of the study is giving proof of a technological scheme and the basic parameters of a new device for feeding sesame plants into the harvesting machine at reduced seed scattering. The kinematics of the point of contact between the plant and a finger of the feeder conveyor has been investigated. The laws for the displacement and the velocitty of that point have been synthesized. They have been used to determine the displacement of the contact point on the stem, the kinematic factor of the conveyors, and also to calculate the position of the knife to the point of initial contact of fingers with the plant. The operation of the new device requires adjusting the longitudinal slope of the conveyors from 0° to 10° and their kinematic factor of 1.1 to... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvesting machines sesame harvesting; Mechanization. |
Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4906 |
| |
|
| |
|
|
|