DE102009040940A1 - Continuous conveyor has endless circumferential conveyor belt whose each end side of conveyor path is deflected and forms upper run and lower run, where conveyor belt has multiple supports extending transverse to conveyor direction - Google Patents

Abstract

The continuous conveyor (1) has an endless circumferential conveyor belt (2) whose each end side of the conveyor path is deflected and forms an upper run and a lower run. The conveyor belt has multiple supports extending transverse to conveyor direction. Rollers (10) are mounted at the ends of the supports. The supporting structure has frame segments (6) which are supported by a sliding base opposite to the ground. A unit for attaching a mobile rear device is provided at the frame segments.

Description

The invention relates to a continuous conveyor with at least one endless circulating conveyor belt, which is deflected at each end of the conveying path and forms an upper strand and a lower strand, wherein the conveyor belt has a plurality of transversely to the conveying direction extending carrier, at the end of each rollers are mounted on the Rolling support means, wherein the support means comprise guide segments, which are at least partially received by a supporting structure.

Such a continuous conveyor is for example from the EP 0 949 163 A1 known.

In contrast to continuous conveyors with a circumferential, gebuldeten conveyor belt or conveyor belt, which is underlined by belt rollers, the conveyor belt of the above-described continuous conveyor is supported on the transverse to the conveyor belt extending support and at the ends of each provided rollers on the support means, so that the conveyor belt no flexing work performed on these supporting belt rollers. As a result, in particular, the specific resistance to movement of the conveyor belt or conveyor belt reduce significantly, which has a positive effect in terms of wear and in terms of electrical power consumption of the belt conveyor.

Another generic continuous conveyor is, for example, from the DE 1 925 673 A known.

The known continuous conveyors are designed for bridging smaller to medium distances and require in the case of the EP 0 949 163 A1 known system stationary guying equipment, especially when larger distances are to be bridged by means of supporting cables. These have to be stretched in practice over foundered guy masts, since the supporting cables take up the entire load of the conveyor belt plus beams, rollers and bulk material.

For use in hard stone mining, stone and earth operations as well as in industrial plants, the aforementioned continuous conveyors are an alternative to a belt reel undercuts endless belt conveyor.

In particular, the continuous conveyors are not suitable for operation on the soles in lignite opencast mines, in which the strip systems, for example the bump tapes, must follow the steady progress of the mining operation. Here would be obstructed about required track structures and anchoring structures. In a open-pit swiveling operation, such as operated in the Rhenish lignite mining area, a mobile conveyor belt is moved about 1 time per month, d. H. rotated by a relatively small angle around the headend. Since the mobile conveyor belts often span several kilometers, the bow at the rear station of the conveyor system at the back can be about 100 m. With relaxation of the conveyor belt, this back work is relatively easy to perform by means of movable on the pit floor equipment.

In particular, because of the aforementioned advantages of the generic continuous conveyor, the invention has the object to improve such a continuous conveyor to the effect that this is also suitable for mobile use in modern large opencast mining with dynamic Abbauführung.

The object underlying the invention is achieved with a continuous conveyor with at least one endless circulating conveyor belt, which is deflected at each end of the conveying path and forms an upper strand and a lower strand, wherein the conveyor belt has a plurality extending transversely to the conveying direction carrier at the ends of each rollers are stored, which roll on support means, wherein the support means comprise guide segments, which are at least partially received by a support structure, wherein the continuous conveyor according to the invention is characterized in that the support structure comprises scaffolding segments, which are each supported via at least one slide pad against the ground and in that means are provided on the framework segments for striking a preferably mobile return device.

Under guide segments in the context of the invention elements to be understood, on which the rollers can roll so that the carrier and are guided with these the conveyor belt. As guide segments both rails or rail profiles as well as laid and / or tensioned cables can be provided.

The invention can be summarized to the effect that is dispensed with a continuous and / or hanging rope construction, which would require special bracing measures. Instead, a plurality of scaffold segments is provided, wherein the distance between the scaffold segments is so small that a sagging about necessary bracing and / or connecting cables between the scaffold segments is not relevant. Anchoring or bracing the continuous conveyor against the ground is according to the invention only in the range of deflection of the continuous conveyor required, in particular also because there the necessary for the circulation of the conveyor belt Tensile forces are introduced into the conveyor belt. However, this does not exclude that, depending on the length and configuration of the continuous conveyor, it is intended to brace one or other scaffolding segment between a head and tail station against the ground.

The conveyor belt may be formed, for example, as a known per se Wellkantenförderband which longitudinally each having continuous corrugated edges, which together with the transverse to the conveying direction extending carriers each form compartments for receiving the conveyed material.

In an advantageous embodiment of the continuous conveyor can be provided as sliding pad skids.

As a sliding pad, for example, a pontoon base may be provided, on which the scaffolding segments are respectively placed. This pontoon base may be in the form of a tub or a hollow body.

Preferably, at least one return rail profile is provided as a means for striking the return device, which preferably extends continuously over at least the entire length of the conveying path on at least one side of the continuous conveyor. Such a return rail profile can be provided, for example, for guiding a sliding shoe or roller shoe designed to be complementary to the return rail profile, which is fastened to a vehicle which can be moved on caterpillars and / or wheels to a boom provided there. By means of the sliding shoe attached to the boom, the sliding pad can be pulled along the opencast mine, wherein in the return operation usually the vehicle provided for this purpose moves in parallel and at a distance from the continuous conveyor.

Conveniently, the framework segments of the continuous conveyor are arranged in the conveying direction in each case at a distance from each other. These can, for example, be connected to one another via carrying cables extending in the conveying direction, the carrying cables only extending between two frame segments in each case.

Alternatively, the support cables may extend continuously over a plurality of scaffolding segments, wherein a bracing may optionally be provided only between adjacent scaffolding segments.

In a preferred embodiment of the continuous conveyor according to the invention, it is provided that at least some of the frame segments, at least those in front of the head conveyor, are braced against the ground by means of bracing devices.

In a particularly preferred embodiment of the invention, provision is made for running rails to be provided on the framework segments as carrying means, the running rails of adjacent stand segments being connected by means of carrying cables. Thus, the rollers can interact on the carriers with the rails and the support cables, these can each be provided with a cylindrical tread with flange and with a circumferential groove whose diameter is adapted to the diameter of the support cable.

In a preferred variant of the continuous conveyor according to the invention, at least one conveyor belt turning device is provided in the upper run, which, for example, as material discharge on the route, d. H. can be provided between the rear and head station.

In another preferred variant of the continuous conveyor according to the invention at least one Förderbandwendeeinrichtung is provided in the lower strand, which is intended to rotate the conveyor belt in the lower strand with the support side up so that no residual material can fall out of the conveyor belt on the route. This is achieved in particular in an advantageous manner that accumulate below the lower run no major pollution.

In addition, it is possible in this way to realize a multi-drum drive. The continuous conveyor may be provided in the lower run with one or more additional drive drums, which are then engaged with the then turned down running side of the conveyor belt.

The invention will be explained below with reference to an embodiment shown in the drawings.

Show it:

1 FIG. 2 is a schematic plan view of a continuous conveyor according to the invention, FIG.

2 : a top view of the in 1 shown continuous conveyor during the return process,

3 : an enlarged detail view corresponding to the section III in 1 .

4 FIG. 2: a side view of a section of a continuous conveyor according to the invention, FIG.

5 a sectional view along the lines VV in 4 .

6 A sectional view taken along lines VI-VI in FIG 4 .

7 FIG. 2 is a schematic view of a head-end station of the continuous conveyor according to the invention, FIG.

8th a schematic side view of a conveyor belt turning device, which is part of the continuous conveyor according to the invention and

9 a section along the line IX-IX in 8th and

10 a sectional view corresponding to that in FIG 8th in one area of the continuous conveyor with turned lower strand.

The continuous conveyor 1 According to the invention comprises an endless circulating conveyor belt 2 , Which each end of the conveying path over deflection drums 3 deflected and driven. Relative to the conveying direction of the conveyor belt 2 one deflection area is called the head station, while the other is called the rear station. A headend 4 of the continuous conveyor 1 according to the invention is in 7 shown. About the driven in this case tail pulley 3 the headend 4 will be responsible for the movement of the conveyor belt 2 required tensile force in the conveyor belt 2 initiated.

The conveyor belt 2 makes a top run 5a and a bottom run 5b and is, as described below, supported on support means which are received by a supporting structure. The supporting structure in the present case comprises individual scaffolding segments 6 , which are each designed as a frame-like cross braced possibly steel structural segments.

The conveyor belt 2 is made of a rubber-elastic material with embedded in this tensile carriers in the form of steel cables and at the longitudinal edges 7 with a so-called corrugated edge 8th edged. At the corrugated edge 8th it is a in the pulling direction of the conveyor belt 2 elastic edging, which is approximately at right angles to the plane of extension of the conveyor belt 2 extends and with the conveyor belt 2 defines a filling cross section.

Unlike conventional belt conveyors, the conveyor belt is different 2 not tolerated, so the corrugated edge 8th the falling of bulk material from the conveyor belt 2 prevents and at the same time the filling cross section of the conveyor belt 2 Are defined.

The corrugated edge 8th consists of individual rubber-elastic pipe segments, which are connected at their periphery linearly with each other and whose cross-section is vulcanized onto the rubber-elastic conveyor belt, such that the corrugated edge 8th is sufficiently flexible to circulate around a tail pulley 3 participate.

The conveyor belt 2 is in the longitudinal direction with spaced supports 9 provided at the ends of each rollers 10 are stored, which are supported on the framework segments 6 support. The carriers 8th are expediently on the bulk material facing the top of the conveyor belt 2 connected with this, alternatively it would be conceivable that the carrier 9 in the conveyor belt 2 vulcanized.

The rollers are in turn supported on rails 11 off, both in the upper run 5a , as well as in the bottom strand 5b ,

The rails 11 each extend only within a framework segment 6 , and on there provided cross struts 12 extending between support profiles 13 the scaffolding segments 6 extend.

In the described embodiment, it is provided that each of the frame segments 6 both in the upper run 5a as well as in the bottom strand 5b over carrying rope 14 connected to each other.

As this particular in the 1 to 3 it can be seen, are the framework segments 6 each spaced from each other, the space created between them 15 is by means of the suspension cables 14 bridged. This segmental design of the continuous conveyor 1 and the flexible connection of the framework segments 6 with each other by means of suspension cables 14 allows an in 2 hinted return movement of the continuous conveyor 1 , as will be described in detail below.

The support cables extend substantially parallel to the rails 11 and are ideally offset by a track width to the rails 11 arranged.

Means for tensioning the suspension cables 14 are not provided in the described embodiment, since the ratio of the length of the individual scaffolding segments 6 to the clear width of the open space 15 or to the length of the suspension cables 14 so cheap is that it does not require the suspension ropes 14 to stretch. If a larger distance must be bridged, it is useful on the scaffolding segments 6 each clamping devices for the suspension cables 14 provided.

Alternatively, the suspension cables 14 also throughout the entire length of the continuous conveyor 1 extend.

The roller 10 , the end of the carrier 9 are provided, each with a concave groove 16 and a cylindrical tread disposed adjacent thereto 17 provided with a cheek of the track groove 16 also as wheel flange for the cylindrical tread 17 can serve.

As can easily be imagined, such a carrier is supported 9 of the moving conveyor belt 2 alternately over the rollers 10 on the rails 11 as well as on the suspension ropes 14 from.

Two support profiles each 13 a scaffolding segment 6 leaning on a skid 18 off, which is the weight of the continuous conveyor 1 on the sole 19 of the opencast mine. Instead of the skids 18 (Four in total per scaffolding segment) may also be provided as a sliding pad each continuous pontoons or trays.

On at least one longitudinal side of the continuous conveyor 1 is on the skids 18 as a means for striking a mobile rear device a back rail profile 23 provided, which can interact with a complementarily shaped shoe of a mobile rear device in the form of a crane with boom. The back rail profile 23 extends consistently over the entire length of the continuous conveyor, so that a continuous back of the device is possible.

In 8th is part of the continuous conveyor 1 in the form of a single frame segment as a conveyor belt turning device 20 educated. Within the in 8th shown framework segments are the rails 11 as curve segments 21 trained, like this in 9 is shown, a tilting of the conveyor belt 2 to cause the longitudinal axis defined by the conveying direction. The angle around which the conveyor belt 2 is turned or tilted in the present case, here is approximately between 60 ° and 70 °. The conveyor belt turning device 20 is located at a location of the conveying path where a material discharge on the track is desired, for example, a transverse to the continuous conveyor described here 1 running subsidy. The discharge of the bulk material takes place here essentially via the chute 22 ,

As part of the construction according to the invention, it is also possible, the conveyor belt in the upper strand 5a and / or in the lower strand 5b to turn through an angle of 180 °, for example, for cleaning purposes or to realize a multi-drum drive and dirt in the lower strand 5b to avoid. In this case it is necessary to use the rollers 10 to lead on two diametrically opposite sides.

10 shows a sectional view of the continuous conveyor 1 on the track in the running direction behind a conveyor belt turning device 20 in the lower strand 5b , For reasons of simplicity, reference is made to the illustration of the conveyor belt turning device 20 in the lower strand 5b has been omitted, as previously with reference to the conveyor belt turning device 20 in the upper run 5a it is only necessary, the rollers 10 To lead on two diametrically opposite sides and these form parallel helically in the respective areas. That in the bottom strand 5b turned conveyor belt 2 is arranged with its wing so that the corrugated edges 8th on the sole 19 of the open pit side.

LIST OF REFERENCE NUMBERS

1

Continuous conveyors

2

conveyor belt

3

Umlenktrommel

4

headend

5a

obertrum

5b

strand

6

rack segments

7

longitudinal edges

8th

Well edge

9

carrier

10

castors

11

rails

12

crossbars

13

support profiles

14

supporting cables

15

free space

16

groove

17

cylindrical tread

18

skid

19

sole

20

Conveyor belt turning device

21

curve segment

22

slide

23

Rear rail profile

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0949163 A1 [0002, 0005]
• DE 1925673 A [0004]

Claims (13)

Continuous conveyor ( 1 ) with at least one endless circulating conveyor belt ( 2 ), which is in each case deflected at the end of the conveying path and an upper strand ( 5a ) as well as a lower strand ( 5b ), wherein the conveyor belt ( 2 ) a plurality of transversely extending to the conveying direction carrier ( 9 ), at whose ends in each case rollers ( 10 ), which roll on support means, wherein the support means comprise guide segments, which are at least partially received by a supporting structure, characterized in that the supporting structure scaffolding segments ( 6 ), which are each supported by at least one slide pad against the ground, and that at the scaffold segments ( 6 ) Means are provided for striking a mobile return device. Continuous conveyor according to claim 1, characterized in that as sliding surface skids ( 18 ) are provided. Continuous conveyor according to one of claims 1 or 2, characterized in that at least one pontoon base is provided as a sliding support on which the framework segments ( 6 ) are each set up. Continuous conveyor according to one of claims 1 to 3, characterized in that as means for abutment of the rear device at least one return rail profile ( 23 ) is provided, which extends continuously, preferably approximately over the entire length of the conveying path. Continuous conveyor according to one of claims 1 to 4, characterized in that the framework segments ( 6 ) are arranged in the conveying direction in each case at a distance from each other. Continuous conveyor according to one of claims 1 to 5, characterized in that the framework segments ( 6 ) extending in the conveying direction supporting cables ( 14 ) are interconnected. Continuous conveyor according to claim 6, characterized in that the supporting cables ( 14 ) only between two framework segments ( 6 ). Continuous conveyor according to one of claims 1 to 7, characterized by clamping devices for the suspension cables. Continuous conveyor according to one of claims 1 to 8, characterized in that at least some of the framework segments ( 6 ) are clamped by means of guying fixtures against the ground. Continuous conveyor according to one of claims 1 to 9, characterized in that as a guide segment on the framework segments ( 6 ) Rails ( 11 ) are provided, wherein the rails ( 11 ) of adjacent scaffolding segments ( 6 ) by means of suspension cables ( 14 ) are connected. Continuous conveyor according to one of claims 1 to 10, characterized in that in the upper strand ( 5a ) at least one conveyor belt turning device ( 20 ) is provided. Continuous conveyor according to claim 11, characterized in that the conveyor belt turning device ( 20 ) is designed as a material discharge. Continuous conveyor according to one of claims 1 to 12, characterized in that in the lower strand ( 5b ) at least one conveyor belt turning device ( 20 ) is provided.

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