PRODUCTION AND EQUIPMENT
TUBULAR BELT CONVEYER WITH TURNOVER
OF THE RETURN RUN OF THE BELT
S. Ya. Davydov,
I. D. Kashcheev,
S. N. Sychev,
and S. A. Lyaptsev
Translated from Novye Ogneupory, No. 7, pp. 10 – 15, July 2010.
Original article submitted December 29, 2009.
Construction and operation are described for overseas tubular belt conveyer (TBC) systems. Distinguishing
features are established for turning over the lower run of the conveyer belt and the main fundamental limita
tions for TBC parameters. Technical characteristics for the domestic rubberized-fabric belt used, properties
and transportation conditions for loads of the building industry TBC are presented. The advantages of TBC
over belt conveyers are listed.
Keywords: tubular belt conveyer (TBC), belt return run, roller, belt edge, C-shaped section, gap, overturn of
the return run.
Problems that arise in the use of belt conveyers in com-
plicated layouts and in protection of the environment from
dust may be resolved by using tubular belt conveyers (TBC)
. A tubular conveyer under the name “Pipe conveyer”
proving advantages of a closed system, ecologically suitable
for the environment and the possibility of constructing a lay-
out with bends in three dimensional space, has guaranteed re-
liable transport of “difficult” loads of different weight, mois
ture content, particle size, etc. In a number of cases these
properties make tubular conveyers uncompetitive with other
Idlers secured in a frame in the form of a hexagon sur
round and hold the belt in the form of a tube in sections be
tween the drive and unloading, and also between the return
and tightening stations. The edges of the belt are overlapped
and due to sufficient elasticity of the belt itself they are
tightly pressed to each other (Fig. 1).
The considerable tightness of the joint of the edges pro
tects the environment from contamination (spills or dust),
and the load from the action of natural factors; wind and pre
cipitation. Accumulation of a load under the lower branch
those areas where the belt has a tubular shape, is excluded.
Ahead of the drive, tension and return drums the tube is cov
ered, and the belt, taking a flat shape, runs freely over them.
Total sealing of the conveyer prevents scattering of the load,
and loss in the return line, since only the clean side of the belt
is in contact with the idlers. A property of the belt conveyer,
formed into a tube, permits bending in three dimensional
space, makes it design a conveyer system based on a continu-
ous belt, without construction of transfer stations (Fig. 2).
The first tubular conveyer in Europe (1988) according to
the Bridgestone licence, started to be produced by the British
firm Dosco Overseas Engineering, and towards the middle of
the 1990s the licence was acquired by more than ten firms,
including Bateman Materials Handling from the UAR, and
also daughter enterprises of the industrial giant Svedala In
dustry AB, i.e. the Trellex Flexopipe company.
Refractories and Industrial Ceramics Vol. 51, No. 4, 2010
1083-4877/10/5104-0250 © 2010 Springer Science+Business Media, Inc.
GOUVPO Ural State Technical University, Ekaterinburg, Russia.
GOUVPO Ural State Mining University, Ekaterinburg, Russia.
Fig. 1. Cross section of “Pipe conveyer” TBC working run.