Modernization of the Metal Structure of the Grader Working Equipment

Doudkin, Mikhail; Kim, Alina; Savelyev, Andrey; Жилейкин, М.М.; Gribb, Vladimir; Mikhailovskaya, V. A.

doi:10.15866/ireme.v14i1.17990

Cited by 5 publications

(8 citation statements)

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“…The direction of rotation of the drum with blades must coincide with the direction of rotation of the milling feeder. Otherwise, the snow mass captured by the intensifier blades will not be thrown into the thrower, but mainly forward to the face, which will cause a sharp decrease in productivity with a significant increase in energy consumption for the MRS workflow [7]. The elementary volume of snow formed on one radial blade of the intensifier in the zone of interaction with the snow mass (Figure 2)…”

Section: Calculation Of the Snow Dragging Prism In Well-known Studiesmentioning

confidence: 99%

“…The snow melted, changed its structure, looseness, stickiness, etc. It was decided to replace natural snow with a material that most closely imitates snow and has a reproducible constancy of properties, especially since recommendations were found according to which the starting materials were selected, namely sawdust, sand and paraffin, a mixture of which in a certain percentage proportion was imitating snow material [4,6,7,12]. The same materials were used in previous experiments, so the physical and mechanical properties of the material simulating snow did not differ from those known [1,2,13].…”

Section: Experimental Studiesmentioning

confidence: 99%

“…This parameter for a milling screw feeder can be used to evaluate the efficiency of the process of throwing snow mass onto the blades of the thrower rotor. When the blade of the rotor-thrower meets the mass of snow thrown by the screw feeder, the kinetic energy of the rotor is lost, which can be determined as follows [7] 𝑇𝑇 =…”

Section: Experimental Equipmentmentioning

confidence: 99%

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Experimental study of the snow removal process by helical blade of the milling feeder

Moldakhanov¹,

Doudkin²,

Kim³

et al. 2023

J Appl Eng Science

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The article presents the process effectiveness evaluation of the throwing snow mass from the face into the operating area of the snowplow rotor-thrower by a milling feeder, when using a paddle type intensifier. During the operation of the milling-rotor snowplow, an operational problem sometimes arises, arising from an incorrectly set slope (angle of elevation) of the helical line of the milling feeder, due to which snow is thrown forward by it along the snowplow, forming an additional amount of snow for processing, which increases the overall energy costs for the development of snow and the movement of the machine in the snow massif and at the same time reduces the performance of the snowplow [1, 2]. The area of rational values of the design and operating parameters of the milling feeder and the bladed intensifier of the snowplow has been calculated. The process of efficiency increase of the milling-rotary snowplow (MRS) and its performance by adjusting the helix angle α and installing a bladed intensifier reducing the power of the working process will make it possible to perform work on clearing snow and ice formations using reduced number of machines, moreover in much less time. A more massive supply of snow mass to the blades of the rotor-thrower due to the use of an intensifier will lead to a decrease in the total energy costs for the snowplow working process. Therefore, by increase the working equipment efficiency of a MRS with the energy intensity decrease of snow development by selecting rational parameters for its design and workflow is the simplest and most effective way to rationally organize the workflow and improve machines of this type of snowplow.

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Section: Calculation Of the Snow Dragging Prism In Well-known Studiesmentioning

confidence: 99%

Section: Experimental Studiesmentioning

confidence: 99%

Section: Experimental Equipmentmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study of the snow removal process by helical blade of the milling feeder

Moldakhanov¹,

Doudkin²,

Kim³

et al. 2023

J Appl Eng Science

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“…A large number and difficulties in describing many of the parameters and relationships between them lead to the fact that only a part of them is involved in the mathematical modeling of the performance of a bulldozer. Depending on the specific goals, the main parameters of the bulldozer [8,9], the design features of various subsystems -the working equipment [10,4,11,12], the propulsion and transmission unit, and the propulsion system [13,14,15], the system control [13,16]. To varying degrees, the parameters of the operational background are also reflected -the developed soil, the bearing surface, the construction site, socio-economic and other factors [17,18], [19][20].…”

Section: Introductionmentioning

confidence: 99%

“…where В -blade cutting edge length, m; S -the width of the blunting area, for new knives S = 0.01…0.015 m [16];…”

Section: Introductionmentioning

confidence: 99%

Theoretical investigations of the process of interaction with the environment of a bulldozer bladow with variable geometry

et al. 2022

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The purpose of the work is to determine the rational parameters of a bulldozer blade with variable geometry, which provides an increase in productivity and an expansion of the bulldozer-terracer scope due to its universal adaptability of the cutting knife shape and the blade surface to the types and conditions of work. The existing studies of the interaction processes with the soil of specialized plough, for the most part, do not take into account specific features and do not allow a reasonable approach to the appointment of the main parameters of the dump with its universal adaptability. For this purpose, studies were carried out on the working process of excavating the soil with a blade of a new universal design, and above all, when digging the soil. The analysis of the ratios influence the central section length to the maximum working width, the inclination angles of the hinges in the longitudinal and transverse planes, and the rotation angle of the side sections on the variable geometric parameters of the blade, which determine its interaction with the ground, is carried out. At the same time, the theoretical dependences obtained based on the statics provisions of a granular medium with adhesion make it possible to analytically evaluate the dimensions and volume of the drag prism and the horizontal component of the resistance to digging with a blade with variable geometry. The study is funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (grant No. AP09260192), and is also the result of the Ph.D. dissertation of Aukenova B.K.

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Investigation of Changes in the Structural-Phase State and the Efficiency of Hardening of 30CrMnSiA Steel by the Method of Electrolytic Plasma Thermocyclic Surface Treatment

et al. 2022

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Electrolytic plasma thermocyclic surface hardening is an attractive solution for both chemical and heat treatment used to improve the properties of the steel surface by structural and phase transformation. Structural and phase transformations occurring during the process of electrolytic plasma thermocyclic hardening are performed repeatedly at varying heating–cooling temperatures, which radically improve the quality of the part and give them properties unattainable by means of one-time processing. The impact of electrolytic plasma thermocyclic hardening modes on the structure and mechanical and tribological properties of 30CrMnSiA steel is investigated. The structural and phase components were examined using optical and scanning electron microscopy, as well as X-ray phase analysis. It is established that the structure of the cross-section is characterized by the following zonality: zone 1—a near-surface hardened zone, which is composed of hardened martensite; zone 2—thermal influence; and zone 3—a matrix consisting of pearlite and ferrite. The microhardness and wear resistance of the hardened surface were evaluated by nanoindentation and “ball on disk” methods, respectively. Nanoindentation analysis demonstrated that the indentation hardening process provides a maximum increase in hardness by three times and an increase in stiffness with a decrease in the elastic modulus by 38% compared to the original steel. The results of tribological studies show that electrolytic plasma thermocyclic hardening increases the resistance of steel to friction by increasing the surface hardness and reduces the area of actual contact during friction. It is established that the microhardness of the cross-section decreases proportionally from the surface to the depth of the layer, which is associated with a decrease in the volume content of martensite.

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Modernization of the Metal Structure of the Grader Working Equipment

Cited by 5 publications

References 0 publications

Experimental study of the snow removal process by helical blade of the milling feeder

Experimental study of the snow removal process by helical blade of the milling feeder

Theoretical investigations of the process of interaction with the environment of a bulldozer bladow with variable geometry

Investigation of Changes in the Structural-Phase State and the Efficiency of Hardening of 30CrMnSiA Steel by the Method of Electrolytic Plasma Thermocyclic Surface Treatment

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