TRANSPORTEUR MOBILE A COURROIE

MOVABLE CONVEYOR BELT CARRIER

Abrégé anglais

ABSTRACT
The invention relates to a movable conveyor belt carrier
which might be used in rock-crushing or other installations
where the bulk material being conveyed may be deposited at
different locations along a line of travel, as defined by
the belt itself. The carrier is mounted so that it has a
pair of caterpillar tracks on one side of the supporting
framework and a single track on the opposite side, in line
with the front track on the one side. The main supporting
structure is carried by the pair of tracks and the torques
acting on this structure are absorbed by a transverse structure
which rests on the third track. The resulting unit is strong,
stable and is easily steered.

Revendications

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A belt carrier supported, on one side of a belt line,
upon two, i.e. one front and one rear, caterpillar tracks, groups
of caterpillar tracks, or other means of travel and, on the other
side, upon a third caterpillar track, group of caterpillar tracks,
or other means of travel, and adapted to travel upon the said
caterpillar tracks along the said belt line; having a box-shaped
main supporting structure running in the longitudinal direction of
the belt carrier, resistant to torsion and bending; having a
transverse supporting structure bridging the belt line, resistant
to torsion and bending, and supporting the main supporting structure
on the caterpillar tracks, or the like, on both sides of the belt
line; having an ejector drum and at least one additional deflector
drum guiding the conveyor belt along the belt line and adapted to
permit removal of the conveyor belt therefrom; and having mountings
for the drums, drives and sets of rollers supporting the conveyor
belt, characterized in that the main supporting structure, running
in the longitudinal direction of the unit, is arranged on one side
above the two caterpillar tracks adapted to travel along one side
of the belt line, and is supported thereon, the supporting rollers
used to support the conveyor belt being mounted on one side of the
main supporting structure by means of brackets; in that the torque
acting upon the main supporting structure is absorbed by the trans-
verse supporting structure which rests upon the third caterpillar
track, adapted to travel along the other side of the belt line,
and is rigidly connected to the main supporting structure, at the
front end thereof; and in that the third caterpillar track is
arranged directly opposite the front caterpillar track and is not

staggered in relation thereto.

Description

6~i
The invention relates to a movable belt carrier supported,
on one side of a belt line, upon two caterpillar tracks, groups
of caterpillar tracks, or other means of travel and, on the
other side of the belt line, upon a third caterpillar track,
group of caterpillar trakcs, or other means of travel, and
adapted to travel, upon the caterpillar tracks, along the belt
line. The carrier has an ejector drum and at least one addi-
tional deflector drum guiding the conveyor belt of a belt
carrier equipped with a grinding belt which is adapted to be
removed; it has a box-shaped main supporting structure higher
than the belt line, preferably located on a level with the
grinding belt extending in the longitudinal direction of the
belt carrier and resistant to torsion and bending; it has a
transverse supporting structure bridging the belt line 7
resistant to torsion and bending, and supporting the main
supporting structure on the caterpillar tracks, or the like,
on both sides of the belt line; and it has mountings for the
drums, drives and roller stations, or garland-roller sets
supporting the conveyor belt.
The ejector drum of a belt carrier inserted into a belt
line transfers the bulk material, fed to it by the conveyor
belt, to a subsequent, similarly mobile, intermediate conveyor,
unloader, or the like~ or to a swivelling belt pertaining to a
belt grinder.
Since belt carr;ers are not always required to work in the
same belt line, but must also be moved to other belt lines,
arrangements must be made for the belt carrier, ;n which the
28 conveyor belt is carried by the ~jector drum and at least one
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additional deflector drum, to be released, i.e. removed, so
that the said conveyor belt may be laid on the floor without
being cut.
The frame carrying such belt carriers rests upon the
two caterpillar tracks, or groups of caterpillar tracks,
adapted to travel on each side of the belt line. In order to
avoid inadmissible distortion, and therefore overloading, of
the said frame when the unit is in motion, it is essential for
this frame to be statically defined by means of a so-called
three-point mounting. The simplest way of achieving this is
to use only three caterpillar tracks or groups of caterpillar
tracks, two of the tracks being arranged on one side of the
belt line one behind the other, while the third track is
located centrally be-tween the other two, as seen in the longi-
tudinal direction of the unit or of the belt line.
In known designs of belt carriers running on three cater-
pillar tracks the frame carrying the drums, drives and roller
stations or sets of garland rollers supporting the conveyor
belt consists of a box-shaped main supporting structure resis-
tant to torsion and bending, locatea above the belt line, andextending along the axis of the belt line and the longitudinal
axis of the unit, with a transverse supporting frame bridging
the belt line, being also resistant to -torsion and bending,
and supporting the main supporting structure on the caterpillar
tracks or the like on each side of the belt line.
The disadvantage of this arrangement is that the belt
carrier must be relatively high, with a correspondingly high
center of gravity. Moreover, the arrangement is complex, since
29 the design must allow for the removal of the belt
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Furthermore~ the steering of the unit when it is in motion
leaves something to be desired, if one caterpillar -track is
arranged centrally between the opposite tracks, as seen in the
longitudinal direction.
It is the purpose of the invention to simply the design,
to save material, and to improve the steering of the unit.
According to the invention, this purpose is achieved in
that the main supporting structure extending in the longitudi-
nal direction of the unit is arranged on one side adjacent the
belt, on the side carrying the two caterpillar tracks or the
like, on one side of the belt line, and is supported thereon,
the roller stations or sets of garland rollers of the belt being
mounted on one side of the main supporting structure by means of
brackets or the like; in that the torque acting upon the main
supporting structure is absorbed by the transverse supporting
structure which rests upon the third caterpillar track, or the
like, on the other side of the belt line and is rigidly connected
to the main supporting structure, at the front end thereof, by
the front caterpillar track; and in -that the third caterpillar
track is arranged directly opposite the ~ront caterpillar track
located under -the main supporting structure, and is not
staggered in relation thereto.
This provides a supporting structure of ver-y simple design.
The main supporting structure, running in the longitudinal
direction of the unit, is arranged in the free space alongside
the belt and may be independent of the belt guide.
It would also be possible to accommodate the electrical
28 circuitry within the box-shaped longitudinal supporting structure,
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thus eliminating the need for any addit;onal electrical
housings. At the front end of the unit, the longitudinal
structure is supported, by a transverse supporting structure,
upon -the two front caterpillar tracks - one on each side of
the belt line; the rear end of the main supporting structure
rests directly upon the rear caterpillar track. The conveyor
belt roller stations, or sets of garland rollers, are held in
brackets each secured by one end to the box-shaped main
supporting structure.
An example of embodiment, which in no way restricts the
concept of the invention, is illustrated in the drawings
attached hereto, wherein:
FIG, 1 is a side elevation of a unit of the present
invention;
FIG. 2 is a plan view of the unit;
FIG. 3 is a section through the unit in the vicinity of
the front caterpillar tracks; and
FIG. 4 is a section through the unit in the vicinity of a
rear caterpillar track.
The rear end of main supporting frame 1 rests upon rear
caterpillar track 3, whereas the front end thereof rests, either
directly or through transverse supporting struc-ture 2, upon
front caterpillar tracks 4 and 5 arranged facing each other on
each side of the belt line.
An ejector drum 6 transfers the bulk material reaching the
belt carrier to a subsequent conveyor or swivelling belt 7. A
deflector drum 8 deflects the conv~yor belt into the direct;on
28 of the belt line. Main support;n~ structure 1 is arranged on
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one side adjacent the belt line or the belt Krinder. For this
reason the belt-supporting roller stations, or sets of garland
rollers, are fitted on one side to brackets 9 each secured by
4 one end to the main supporting frame.
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