scholarly journals Automated section for milling soil in near-trunk zones of orchard

2020 ◽  
Vol 161 ◽  
pp. 01068
Author(s):  
Dmitriy Khort ◽  
Rostislav Filippov ◽  
Igor Smirnov ◽  
Alexey Kutyrev ◽  
Stepan Semichev
Keyword(s):  
Theoretical Analysis ◽  
Quality Indicators ◽  
Hydraulic System ◽  
Tracking System ◽  
Fruit Trees ◽  
Original Design ◽  
Milling Cutter ◽  
Working Bodies

Machines used in gardens do not fully comply with the quality indicators of tillage, especially in the near-trunk zones of fruit trees. Theoretical analysis made it possible to establish that the preferred protective distance in the aisle of the garden should be at least 0.20 m in each direction, and in the inter-barrel space of the boles along a row of 0.38 m and to establish the optimal width of the extension section of 0.55 m. As a result of the research, an original design of the deflectable milling section of the garden milling cutter with an autonomous hydraulic system was proposed and developed, as working bodies knives with special sharpening are used. The tracking system of the remote section is equipped with a double remote probe, when exposed to which the section is retracted to the required distance to protect the trunk of a tree. The use of a deflectable milling section of a garden milling cutter allows to increase the accuracy and quality indicators of processing in the near-trunk zones of garden plantings, while the density of the soil decreases on average by 24%.

scholarly journals Justification of optimal design and technological parameters of needle discs of the combined working body

2020 ◽  
Vol 17 ◽  
pp. 00016
Author(s):  
Alexander M. Petrov ◽  
Sergey A. Ivanayskiy ◽  
Mikhail A. Kanaev ◽  
Oleg M. Parfyonov ◽  
Maxim S. Ivanayskiy
Keyword(s):  
Optimal Design ◽  
Quality Indicators ◽  
Soil Tillage ◽  
Technological Parameters ◽  
Research Results ◽  
Soil Cultivation ◽  
Working Bodies ◽  
Rotor Tooth

The aim of the research is to improve soil tillage quality using combined working bodies in surface cultivation. There are various designs of combined tillage units including passive cultivators and active rotor-tooth working bodies cultivating land. However, an analysis of design and technological parameters of modern cultivators shows that they have a cumbersome design, required much metal and their quality indicators do not meet soil cultivation requirements. The article presents results of the studies on the influence of geometric and technological parameters of an additional battery of needle discs on land tillage quality. Using the research results, the land tillage has been improved and combined working bodies have been developed.

Improvement of technical means for processing waste from logging operations for fuel chips in felling conditions

2017 ◽  
Author(s):  
Sergey Fokin
Keyword(s):  
Forest Fires ◽  
Hydraulic System ◽  
Economic Effect ◽  
Heat Energy ◽  
Wood Waste ◽  
Processing Waste ◽  
Operational Parameters ◽  
Additional Source ◽  
Milling Machines ◽  
Working Bodies

Currently, wood waste in the form of a dissected crown on the ground and the root fraction of the tree's biomass in the ground remain in felling areas, becoming potentially dangerous combustible materials in the event of forest fires, as well as obstacles to reforestation activities, and possible foci of infections. Shredding wood waste into wood chips will solve the problem of their disposal by using fuel chips as an additional source of heat energy. In the present work, the influence of design and operational parameters of milling machines with a modernized hydraulic system and equipped with active working bodies on the process of shredding wood waste is established. The annual economic effect from the introduction of the developed complex of wood waste shredding machines and economic indicators from the use of fuel chips are given. This publication is intended for undergraduates and postgraduates engaged in scientific research in the field of forestry mechanization.

scholarly journals On the problem of interaction of the tillage working body with the soil

2020 ◽  
Vol 193 ◽  
pp. 01062
Author(s):  
Sergey V. Belousov ◽  
Evgeny E. Samurganov
Keyword(s):  
Theoretical Analysis ◽  
Soil Treatment ◽  
The Subject ◽  
The Moment ◽  
Working Bodies

The article is devoted to the main soil treatment with disk working bodies. The article has a research character, which is expressed in the fact that the theoretical analysis of the interaction with the soil, as well as excerpts from the works of leading scientists on the subject under study, which provide optimal soil treatment and their shortcomings and ways to solve these problems are indicated. Equations obtained allow us to determine the movement of a particle on the surface of the disk’s blade at the moment of its operation. The disk shape is theoretically justified. In conclusion, the main results achieved so far are presented.

Four-port hydraulic transformer with inlet and outlet equal flow and its flow characteristics

2021 ◽  
pp. 095440622110316
Author(s):  
Chu Zhang ◽  
Lianquan Zhou ◽  
Xiaonan Bo ◽  
Weiwei Qu ◽  
Panpan Zang
Keyword(s):  
Theoretical Analysis ◽  
Flow Rate ◽  
Hydraulic System ◽  
Measurement Data ◽  
Flow Characteristics ◽  
Remarkable Feature ◽  
Flow Rates ◽  
Instantaneous Flow ◽  
Hydraulic Transformer ◽  
System A

Without changing the original valve control hydraulic system, a kind of hydraulic transformer, called four-port hydraulic transformer (FHT), is proposed to recover the energy loss caused by system throttling. The remarkable feature of FHT is that the flow rate at inlet and outlet ports are equal. This means that FHT can be connected into the load circuit of hydraulic system to recovery energy without refreshing flow rate. This paper investigates the flow characteristics of FHT, including instantaneous flow rates, average flow rates and flow pulsations in each port. The relationships between the structure of port plate and the flow characteristics are given. The variation rule of number of plungers connected to four ports is shown, and the relationship between the variation and the flow pulsation is revealed. The simulation results show that the flow rates and displacements of symmetrical ports are same, and the instantaneous flow rate of symmetrical ports has the same rule. The results also show the frequent changes of the number of plungers connected with each port lead to more flow jump points in instantaneous curves, and the jump point is the basic cause of its loud noise. The test shows that the flow rates of measurement data of the experiment are very close to the theoretical analysis, proved the theoretical analysis of flow characteristics for FHT are appropriate and reasonable, which has a certain reference for the development and energy-saving application for FHT.

Experimental and Theoretical Analysis Of a Solar Desalination System Improved by Thermoelectric Cooler And Applying Sun Tracking System

2018 ◽  
Vol 115 (6) ◽  
pp. 62-76 ◽  
Author(s):  
Ahmad Sedaghat ◽  
Ehab Hussein Bani Hani ◽  
Salim Ali ◽  
Fahad Ali ◽  
Areaj Al-Mesbah ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Tracking System ◽  
Thermoelectric Cooler ◽  
Solar Desalination

scholarly journals Analysis of Racing Greyhound Path Following Dynamics Using a Tracking System

Animals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2687
Author(s):  
David Eager ◽  
Imam Hossain ◽  
Karlos Ishac ◽  
Scott Robins
Keyword(s):  
Tracking System ◽  
Data Gathering ◽  
Injury Rate ◽  
Path Following ◽  
Frame Rate ◽  
Data Race ◽  
Original Design ◽  
Track Maintenance ◽  
Player Tracking ◽  
Spring Force

The University of Technology Sydney (UTS) has been working closely with the Australasian greyhound industry for more than 5 years to reduce greyhound race-related injuries. During this period, UTS has developed and deployed several different techniques including inertial measurement units, drones, high-frame-rate cameras, track geometric surveys, paw print analysis, track soil spring-force analysis, track maintenance data, race injury data, race computer simulation and modelling to assist in this task. During the period where the UTS recommendations have been adopted, the injury rate has dropped significantly. This has been achieved by animal welfare interventions that lower racing congestion, and lower transient forces and jerk rates the greyhounds experience during a race. This study investigated the use of a greyhound location tracing system where small and lightweight signal emitting devices were placed inside a pocket in the jackets of racing greyhounds. The system deployed an enhanced version of a player tracking system currently used to track the motion of human athletes. Greyhounds gallop at speeds of almost 20 m/s and are known to change their heading direction to exceed a yaw rate of 0.4 rad/s. The high magnitudes of velocity, acceleration and jerk posed significant technical challenges, as the greyhounds pushed the human tracking system beyond its original design limits. Clean race data gathered over a six-month period were analysed and presented for a typical 2-turn greyhound racing track. The data confirmed that on average, greyhounds ran along a path that resulted in the least energy wastage, which includes smooth non-linear paths that resemble easement curves at the transition between the straights to the semi-circular bends. This study also verified that the maximum jerk levels greyhounds experienced while racing were lower than the jerk levels that had been predicted with simulations and modelling for the track path. Furthermore, the results from this study show the possibility of such a systems deployment in data gathering in similar settings to greyhound racing such as thoroughbred and harness horse racing for understanding biomechanical kinematic performance.

scholarly journals The way to solve the problem of degradation of mountain pastures of the Central Caucasus

2020 ◽  
Vol 197 (6) ◽  
pp. 10-16
Author(s):  
Sergey Dzhibilov ◽  
Eduard Soldatov ◽  
Lyudmila Guluyeva ◽  
Irina Soldatova
Keyword(s):  
Dry Weight ◽  
Perennial Grasses ◽  
Technical Solution ◽  
Original Design ◽  
Resource Saving ◽  
New Device ◽  
The North ◽  
Grass Stand ◽  
Central Caucasus ◽  
Working Bodies

Abstract. The authors presented the results of research and development, on the basis of which a new device was created that facilitates the restoration of degraded mountain pastures after unsystematic use with excessive grass grazing. The purpose of the study is to develop a new method of improvement and a prototype of attachments that will allow the seeding of perennial grasses in sparse grass and bare areas of the soil, which will increase stiffness. The object of the study are the working bodies: sowing devices, the original design, scatter cones, net runners. The novelty of the technical solution lies in the fact that the authors of the article developed a new resource-saving method for improving mountain fodder land using a modernized seeder equipped with removable working bodies for automatic, targeted seed sowing, sowing seeds only in degraded and bare areas, skipping areas with normal grass stand. The tests were carried out at a mountain hospital, located on the southeastern exposition of the Dargavsky depression of the North Ossetia-Alania, at an altitude of 1650 m above sea level with a slope of 10°, in six plots, with a recorded area of 360 m2 two options in triplicate. The first option is natural seeding, and the second is the seeding of grasses by the aggregate. The plots are located across the slope randomized. It was found that at a concentration of 17.2 MJ of energy in 1 kg of dry matter of feed, the total collection in the control plot was 29.7 GJ, and in the seeded experimental field – 85.3 GJ. It was revealed that changes in the grass stand influenced the accumulation of biomass of phytocenosis. So, the crop of the aboveground fodder mass, when sowing grasses, in the first year of observations was 18.2 c/ha of dry weight, which is 5 times higher than in the control. During the growing season of the third year of observations, the yield in the sown area was 59.1 c/ha of dry weight against 17.3 c/ha in the control.

scholarly journals MULTI-PURPOSE CHISEL FOR SOIL TREATMENT IN VINEYARDS

Russian vine ◽  
2021 ◽  
Vol 17 ◽  
pp. 31-39
Author(s):  
G.G. Parkhomenko ◽  
◽  
S.I. Kambulov ◽  
◽  
◽  
...  
Keyword(s):  
Energy Consumption ◽  
Root System ◽  
Specific Energy Consumption ◽  
Row Spacing ◽  
Energy Costs ◽  
Original Design ◽  
Row Crops ◽  
Additional Degree ◽  
Foreign Countries ◽  
Working Bodies

Used in Russia mechanized technology in the vineyards characterized by an increase in en-ergy costs 2.5–3.4 times compared to foreign countries. Most of the energy costs account for processing vineyard soil. It is necessary to improve the methods of mechanized soil cul-tivation in vineyards in terms of reducing en-ergy consumption while maintaining quality. The aim of the study is to develop mecha-nized universal technical means and working bodies for processing row-spacing of vine-yards with the lowest energy consumption without damaging the root system of the bushes. The designed multioperational chisel is capable of performing tiered tillage in ac-cordance with the architectonics of the root system of the bushes. Loosening depth 9–45 cm. The original design of the working bodies of the chisel with an additional degree of freedom provides a reduction in traction resistance by 12–14% and specific energy consumption by 1.2 and more times. Chisel complies with agrotechnical requirements in terms of fulfilling the quality indicators of the technological process. The number of frac-tions up to 50 mm 57.5–76.5 %, lumps over 100 mm 8–9 %. Universal design multiopera-tional garden and vineyard chisel allow its use in technologies of cultivation not only fruit, but also grain and row crops.

The Combined Application of Intermittent Strengthening Strip and After-Irrigation-Strip in Certain Long Concrete Structure

2011 ◽  
Vol 243-249 ◽  
pp. 1190-1194
Author(s):  
Shu Juan Yang ◽  
Sheng Min Ji ◽  
Lu Yao Ding ◽  
De Hu Yu ◽  
Tao Sui ◽  
...  
Keyword(s):  
Quality Control ◽  
Theoretical Analysis ◽  
Economic Analysis ◽  
Concrete Structure ◽  
Engineering Application ◽  
Control Measures ◽  
Original Design ◽  
Crack Control ◽  
Combined Application ◽  
Technical And Economic Analysis

Long concrete structure is frequently used in modern buildings or structures. As the main measures of achieving seamless construction and crack control of long concrete structure, strengthening strip and after-irrigation-strip have been widely applied. However, compared with after-irrigation-strip, the clear advantage of strengthening strip is closure ahead. Therefore, this paper from aspects of theoretical analysis and engineering application replace the after-irrigation-strip with intermittent strengthening strip in one original design of a project. Since the completion of construction, there are no harmful cracks in the structure. This article also describes the project quality control measures and technical and economic analysis for the design and construction of similar projects.

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