Cutting brushes are used at relatively low speeds by various municipal vehicles and in particular road sweeping units. As the name suggests such brushes are designed to “cut” through debris, especially compacted sand or similar matter. The main deflection plane of a bristle (or tine) is along the mount radius, making the tines very stiff in the direction of rotation, hence the cutting action when the brush is rotated. Exploring the literature shows that very little is known, or understood, about the operation of brushes for mechanical sweeping. In this paper a pseudo-static discretized model is developed to investigate the deformations and forces acting on brushes during ideal operation of a horizontal brush on a flat plane. Due to the numerous different sweeper brushes on the market, one common configuration is used as the basis of the model and the paper will detail only the characteristics of this brush. The brush to be investigated is a “cutting brush,” introduced above, where the tines can only deflect along the mount radius. Having developed a model it is used to predict the forces and torques generated within a horizontally rotating brush. The influence of centrifugal force is analyzed although transient effects are neglected and steady state conditions assumed. The predictions of the model are compared to practical results taken from a test rig and the validity of the model is discussed. Agreement between the model and the practical results will be shown to be good, considering the complexities and practical realities involved in analyzing any system which is friction dependent.
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e-mail: g.peel@surrey.ac.uk
e-mail: g.parker@surrey.ac.uk
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December 2002
Technical Papers
Initial Investigations Into the Dynamics of Cutting Brushes for Sweeping
G. M. Peel,
e-mail: g.peel@surrey.ac.uk
G. M. Peel
School of Engineering, University of Surrey, Guildford, Surrey, GU2 7XH, UK
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G. A. Parker
e-mail: g.parker@surrey.ac.uk
G. A. Parker
School of Engineering, University of Surrey, Guildford, Surrey, GU2 7XH, UK
Search for other works by this author on:
G. M. Peel
School of Engineering, University of Surrey, Guildford, Surrey, GU2 7XH, UK
e-mail: g.peel@surrey.ac.uk
G. A. Parker
School of Engineering, University of Surrey, Guildford, Surrey, GU2 7XH, UK
e-mail: g.parker@surrey.ac.uk
Contributed by the Dynamic Systems and Control Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the ASME Dynamic Systems and Control Division, November 2000; final revision, May 2002. Associate Editor: Y. Hurmuzlu.
J. Dyn. Sys., Meas., Control. Dec 2002, 124(4): 675-681 (7 pages)
Published Online: December 16, 2002
Article history
Received:
November 1, 2000
Revised:
May 1, 2002
Online:
December 16, 2002
Citation
Peel, G. M., and Parker, G. A. (December 16, 2002). "Initial Investigations Into the Dynamics of Cutting Brushes for Sweeping ." ASME. J. Dyn. Sys., Meas., Control. December 2002; 124(4): 675–681. https://doi.org/10.1115/1.1515333
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