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A. Yu. Kuzkin
A. Yu. Kuzkin
(Saint-Petersburg Mining University
(Saint-Petersburg Mining University

Articles

Electromechanics and mechanical engineering
  • Date submitted
    2015-11-18
  • Date accepted
    2016-01-10
  • Date published
    2016-05-01

PNB type loader shoveling arm motion irregularity in dependence of its mass

Article preview

Requirements are formulated on motion trajectory of the front edge of the arm of PNB type loader needed to provide the maximum shoveling of bulk mass under the condition of fitting that trajectory into the dimensions of reception plate. Kinematic schemes are analyzed of mechanisms of shoveling arms. Rational parameters are suggested for that mechanism, which provide a 1.5 times increase of single-time shoveling of bulk load resulting in a 30 % increase of theoretical capacity of the machine. A technique is presented of defining the area embraced by the complex motion trajectory of the front edge of the arm. A mathematical model is designed of motion of the shoveling arm with curvilinear tail part using the techniques of vector algebra, second order central differences and triangulation. Geometric parameters of the mechanism of work tool of the loader are described by a linear equation yielding the functional dependence of coordinates of the position of front edge of the arm on the turning angle of the leading joint and the parameters of kinematic scheme. The effect is studied of the total mass of shoveling arm on the irregularity factor of mechanism motion. It is found that redistribution of mass between the work tool and the tail part of the arm within the given total mass of the tool suppresses the motion irregularity factor.

How to cite: Timofeev I.P., Kuzkin A.Y. PNB type loader shoveling arm motion irregularity in dependence of its mass // Journal of Mining Institute. 2016. Vol. 221. p. 717. DOI: 10.18454/PMI.2016.5.717
Manufacturing machinery and equipment
  • Date submitted
    2013-09-19
  • Date accepted
    2013-11-06
  • Date published
    2014-03-01

Parameters optimization of the mechanism of the shovel loaders feet type PNB

Article preview

Influence of geometrical and kinematic parameters of the kinematic scheme of the mechanism of working body of a loader of type PNB on increase in theoretical productivity depending on position of the area of capture of cargo is shown and the analysis of change of speed and acceleration of an extreme point of working body of a paw for one turn of a crank is given.

How to cite: Belous N.A., Kuzkin A.Y., Timofeev I.P. Parameters optimization of the mechanism of the shovel loaders feet type PNB // Journal of Mining Institute. 2014. Vol. 209. p. 13.
Mining electromechanics and mining equipment
  • Date submitted
    2011-07-27
  • Date accepted
    2011-09-30
  • Date published
    2012-01-01

Synthesis of the mechanism of the effektor of a gathering-arm loader

Article preview

In article possibility of performance improvement of a gathering-arm loader at the expense of adjustment of the kinematic circuit oscillating crank mechanism a method of synthesis of a path of driving of the leading edge of a gathering arm on the given conditions of processes of implementation, capture and bulk cargo transportation is considered.

How to cite: Vasileva M.A., Kuzkin A.Y., Timofeev I.P. Synthesis of the mechanism of the effektor of a gathering-arm loader // Journal of Mining Institute. 2012. Vol. 195. p. 241.