Abstract
A promising direction in surface tillage is the development and use of a non-driven rotary tillage tool with needle-shaped working bodies in the braking mode. For testing, a site was selected after harvesting barley with a soil moisture content of 23–24%, a layer of up to 20 cm and a hardness of 1 MPa; for control soil cultivation, a PN-4-35 plow was used at a speed of 8–8.2 km/h.The effect of loosening and grinding the soil in the developed rotary tillage tool is provided by the braking of the shafts connected by a chain drive and replaceable sprockets. Installing the shafts at a center distance of 600 mm, and between the discs at 144 mm, provides self-cleaning of the working bodies from clogging with straw and soil. The chopper torque varies within 550-850Nm. The shaft of the front battery performs alternately the functions of a ripper and a drive of the second shaft and has a sign-variable torque of ± 1100 Nm. The braking mode is provided by a chain transmission with a gear ratio of 1.5-3.0. The dependence of the braking coefficient (K) on the hardness of the cultivated soil has been established. The best indicators of the quality of surface tillage were obtained at K=1.8. It has been established that an increase in K is accompanied by intensive loosening of the soil, which leads to a decrease in stubble on the surface by 7-13%. An increase in soil density leads to the formation of lumps up to 80 mm in diameter, the depth of processing is disturbed, and there is an uneven distribution of the load on the working bodies of the batteries. It was determined that the depth of cultivation with needle discs with braking, depending on the condition and previous tillage, ranges from 80-100 mm. A laboratory-field installation was made. The quality of pre-sowing soil preparation is carried out with blades 280 mm long with an inter-disc distance of 144 mm and the minimum possible distance of the shafts is 600 mm. Field tests of needle-shaped working bodies with slowdown indicated the need to clarify the design and regime parameters and the shape of the working bodies of the tool.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
