WO2017050444A1

WO2017050444A1 - Double conveyor belt and double conveyor belt system

Info

Publication number: WO2017050444A1
Application number: PCT/EP2016/063576
Authority: WO
Inventors: Andrey MINKIN
Original assignee: Contitech Transportbandsysteme Gmbh
Priority date: 2015-09-23
Filing date: 2016-06-14
Publication date: 2017-03-30
Also published as: DE102015218266A1

Abstract

The invention relates to a double conveyor belt (1) for use in a double conveyor belt system (2), comprising a first conveyor belt (10) for use as a carrying belt (10) and a second conveyor belt (15) for use as a covering belt (15), wherein a material (3) to be transported can be accommodated between the carrying-side cover plate (11) of the first conveyor belt (10) and the carrying-side cover plate (16) of the second conveyor belt (15). The double conveyor belt (1) is characterized in that at least one carrying-side cover plate (11; 16) has a profile (14; 19) at least in some sections.

Description

description

Double conveyor belt or double belt conveyor

The present invention relates to a double conveyor belt according to the preamble of claim 1, a conveyor belt for use as a carrier belt or as a cover belt in such a double conveyor belt according to claim 9 and a double belt conveyor with such a double conveyor belt according to claim 10.

In the handling of loose goods such as e.g. Bulk goods such as e.g. Rock,

Natural resources, waste material, agricultural products, etc. long-hollowed conveyor belts are used, the material to be transported to a

Pick up pick-up point on its carrying side and deliver it to a delivery point. Since the material to be transported during transport to the environment is promoted open, contamination and weathering of the environment can affect the material to be transported and the material to be transported can pollute and endanger the environment. Also, due to their design curves and gradients can only be realized to a limited extent with hollowed conveyor belts. Thus, an inclination angle of about 20 ° slope can usually not be exceeded in conventional belt systems. If the limit of feasibility is reached here, several special conveyor belts must be connected to transfer points. This significantly increases the effort and thus the costs of the conveyor system. For the elimination of these disadvantages, double-belt conveyor systems have long been known, which are also known as deck belt conveyors, sandwich belt conveyors, sandwich belt conveyors, Snake Sandwich Conveyors or High Angle Conveyors (HAC®). A Doppelgurtförderanlage represents a belt conveyor for steeply inclined to vertical conveying tasks, in which the conveyor cross-sectional area of two superimposed conveyor belts is formed. The lower part of a Doppeltfördergurts is usually carried out by a commercially available Muldengurt, which can also be referred to as a carrying belt. The upper part of the double conveyor belt can be called a cover belt. The cover belt is pressed after the material application by pressing rollers on the material to be transported and the lower support belt, so that a non-positive material transport of the material to be transported between the support sides of the support belt and the

Deckgurts can take place.

Depending on the operating parameters of the Doppelgurtförderanlage and the material to be transported, the cover belt in the same conveying speed with the

run along with the transporting material and the support belt or the cover belt can be driven separately, even at high resistance to movement, especially at a high pitch resistance, which can be caused by a large lifting height and or or a large mass flow to partially relieve the girth. In this case, the conveying speeds of the two superimposed belts must be precisely synchronized.

A major advantage of the Doppelgurtförderanlagen compared to conventional gebuldeten belt conveyors or Schlauchgurtförderern, also called Rollgurtförderer or Pipe Conveyor, lie in the realization of conveyor lines with very high inclination angles of about 30 ° to 90 ° to maximum inclination angles of about 20 ° in gebuldeten conveyor belts without Profiling and about 30 ° with smooth hose straps. Also can be realized by means of a Doppeltgurtförderanlage compared to Schlauchgurtförderanalgen conveyor lines with very tight convex and or concave curves. In addition, a double-belt conveyor system enables

Compared to domed belt conveyors a closed material transport. This allows the material to be transported and the environment completely separated be because the Doppeltfördergurt similar to a Schlauchgurtförderer on the

Conveyor line can remain closed.

The disadvantage of Doppelgurtförderanlagen that they require a lot of effort, because in addition to the support belt and its support rollers, deflection and drive drums in addition a cover belt with appropriate press rollers, deflection and drive drums must be provided. This not only increases the expense of the press rollers, deflection and drive drums of Deckgurts itself, but the additional press rollers,

Deflection and drive drums of the cover belt must be additionally held, i. they also require racks, frames, etc. Furthermore, the energy required to operate the Doppeltgurtförderanlage accordingly. This additional expense can affect not only the cost of the purchase of the plant but also on the operating costs.

An object of the present invention is to provide a double conveyor belt or a double belt conveyor of the type described above, so that the cost of the Doppelgurtförderanlage can be reduced in purchase and / or during operation.

The object is achieved according fiction, by a Doppeltfördergurt with the features of claim 1, a conveyor belt with the features of claim 9 and a Doppeltgurtförderanlage with the features of claim 10. Advantageous developments are described in the subclaims.

Thus, the present invention relates to a double conveyor belt for use in a double belt conveyor with a first conveyor belt for use as a carrier belt and a second conveyor belt for use as a cover belt, wherein between the carrier side cover plate of the first conveyor belt and the support side cover plate of the second conveyor belt a material to be transported are received can. This material may in particular be a loose bulk material such as rock, minerals, waste material, agricultural products, etc. The double conveyor belt according to the invention is characterized in that at least one support-side cover plate has profiling at least in sections. The profiling is preferably provided over the entire longitudinal direction of the double conveyor belt, preferably at regular intervals. Under the cover plate of the

Doppeltfördergurts is understood to be the transportable material facing area of the Doppeltfördergurts. The surface of this side of the Doppeltfördergurts can also be referred to as the support side or top side. If the double conveyor belt is formed of a uniform material, then under the cover plate is the area of the

To understand double conveyor belts, which faces the material to be transported. If the double conveyor belt has a plurality of material regions in height, then the cover plate should be understood to mean the material region which faces the material to be transported. The latter variant can have the advantage that the material of the cover plate can be designed optimized for this function, whereas the remaining material region can be designed optimized for other functions.

The present invention is based on the idea of avoiding a substantially smooth surface of the cover plate of at least the carrying belt or the cover belt of a Doppeltfördergurts, because on this smooth surface, the material to be transported can be kept relatively poor, especially during transport over great gradients and or at narrow angles.

Therefore, according to the invention, a profiling can be provided on the surface of the cover plate of at least the carrying belt or the covering belt of a double conveyor belt, e.g. to increase the frictional resistance by profiling in the form of increased roughness or depressions and / or elevations in height. As a result, the frictional connection between the material to be transported and the cover plate of the support or cover belt can be increased, so that the same extent the contact pressure of the upper press rollers and or or the lower support rollers of the corresponding

Double belt conveyor can be reduced. As a result, the number of upper press rollers and or or the lower support rollers of the corresponding

Doppeltgurtförderanlage be reduced, which reduces the effort and costs of Double belt conveyor system can be reduced in purchase and operation. Also, a better distribution of forces between the material to be transported and the support belt and or or the cover belt can be achieved. According to the invention, a profiling on the surface of the cover plate of at least the support belt or the cover belt of a Doppeltfördergurts are also provided such that this profiling is formed by elevations and or or depressions, which also or instead at least partially a positive fit of the material to be transported with allow the corresponding cover plate. In this way, instead of the hitherto conventional purely non-positive material transport on the smooth surfaces of the cover plate, an at least partially positive material transport or an improved non-positive material transport can now be achieved. As a result, less contact pressure on the material to be transported may be required by the cover belt, so that also for this reason, the number of upper press rollers and or or the lower support rollers can be reduced.

It is also advantageous that by profiling the support-side cover plate of at least the strap or the cover belt of a Doppeltfördergurts compared to unprofiled cover plates uniform distribution of the entire Gurtzugkraft between the support and cover straps of a Doppeltfördergurtes can be achieved. In this way, the nominal strengths of the support and cover straps can be approximated.

So far, in conveyor belts with unprofiled cover plates usually the ratio between the nominal strength of the support belt to the nominal strength of the cover belt are about 0.65. For example, the nominal strength of a non-profiled support belt can be about 5,400 N / mm, the nominal strengths of the corresponding unprofiled covering belt at about 3,500 N / mm. This ratio may be unfavorable to the effect that the two straps can have very different nominal strengths and thus also very different production costs. This makes the two straps as a whole expensive, because a more expensive and heavier strap with a cheaper and lighter deck strap must be used together. The system components such as drive and idler pulleys can be more expensive for belts with different nominal strengths, because the drum diameter of the carcass thickness of the tension member such as the rope diameter or the fabric layer thickness is dependent. Therefore, be

Usually uniformly uses the larger drums, which are therefore suitable for both straps, even if this significantly over-dimensioned drums for light-weight cover belt and thus may be unnecessarily expensive.

If the surface of the cover plate of at least the carrier belt or the cover belt of a double conveyor belt is profiled in accordance with the present invention, this disadvantage can be at least partially overcome by allowing the ratio of the nominal strengths of the carrier and cover straps to be approximated. This ratio would be in

Ideal 1: 1. If this ideal ratio is achieved or at least better approximated than usual, the costs for both straps can be reduced.

According to one aspect of the present invention, both the support-side cover plate of the first conveyor belt and the support-side cover plate of the second conveyor belt at least partially profiling. As a result, the effect described above can be enhanced by the profiling of both sides can act on the material to be transported. This can be the procurement and

Further reduce maintenance costs of the corresponding double belt conveyor.

According to a further aspect of the present invention, the profiling is at least partially of the support-side cover plate perpendicular outstanding, preferably edge-shaped formed. As a result, profile elements can be created, in particular in the form of edges, on which a positive retention and / or an improved frictional grip of at least part of the material to be transported can be made possible. As a result, a secure improvement of the maintenance of the material to be transported can be achieved. According to a further aspect of the present invention, the profiling is formed as part of the support-side cover plate. In other words, that is

Profiling with the cover plate in one piece, i. one piece, trained. In this way, the connection of the profiling can be improved to the cover plate. For this purpose, the profiling after the production of the cover plate to this example. by gluing or

Vulcanization be applied. Preferably, the profiling has been formed directly in the production of the cover plate together with this. This can be the

Reduce manufacturing costs. According to a further aspect of the present invention, the profiling is an oblique cam profiling having diagonal elements extending both longitudinally and transversely of the double conveyor belt, the diagonal elements in pairs forming a V-shape in pairs, the longitudinal direction of which is opposite Conveying direction is aligned. Such an oblique cam profiling can also be referred to as chevron profiling or stud profiling.

The elements of a slanted cam profiling are substantially oblique to the conveying direction, i. to the longitudinal direction of the Doppeltfördergurtes. Oblique here means that the profiles as diagonal elements at least partially extend both in the longitudinal direction and in the transverse direction of the Doppeltfördergurtes. At the same time, the oblique elements of the profiling, which may also be referred to as oblique cams, arranged so that they together form V-shaped peaks in which support the material to be transported against the conveying direction and by the internal friction within the material to be transported can be kept at higher gradients. In this way, the power transmission between the support-side cover plate and the material to be transported on the oblique

Profiling done mainly non-positively. In this way, a slipping material to be transported can be effectively counteracted, so that the number of press rollers or idlers and the Contact pressure of the press rollers of the corresponding Doppeltgurtförderanlage can be reduced.

The oblique cam profiling may preferably be characterized in that the oblique cams can be made so flat perpendicular to the surface of the support-side cover plate that the oblique cam preferably in the manufacture of

Double conveyor belt, e.g. in the vulcanization, can be formed together with the support-side cover plate. As a result, the oblique cam profile can be integrally formed in a double conveyor belt with the support-side cover plate.

According to a further aspect of the present invention, the profiling in the width substantially corresponds to the width of a central belt zone, which is adapted to receive the material to be transported. In this way, the profiling can be located exactly where it should achieve its effect.

According to a further aspect of the present invention, at least one support-side cover plate, preferably both support-side cover plates, in the width next to the central belt zone, preferably in the width on both sides of the central belt zone, an edge zone which is free of the profiling or are. In this way, the profiling can be limited exactly to the middle belt zone, where it should achieve its effect, and the remaining areas of the cover plates of the Doppeltfördergurts can remain free of the profiling to avoid useless effort and thus costs. Furthermore, the remaining areas of the cover plates, as hitherto customary, can be made smooth, in order to close the double conveyor belt through the

To allow laying on the cover plates of the carrying strap and the cover belt or to favor.

According to a further aspect of the present invention, the first conveyor belt and / or the second conveyor belt has or have an elastomeric material in which a plurality of tension members, in particular steel cables and / or fabric layers, is embedded. About this Zugträger the transmission of tensile forces in the longitudinal direction, direction or conveying direction can be done.

As tensile carriers or reinforcements, steel cables can be used in steel cord conveyor belts, fabrics in fabric conveyor belts or aramid in aramid conveyor belts. The fabrics may be polyester, polyamide, cotton or combinations thereof. For example, in fabric conveyor belts fabric carcasses are possible, the polyester yarns in the warp direction (longitudinal direction) and polyamide yarns in

Weft direction (transverse direction) (EP fabric). Also, polyester filaments can be used in both directions (EE fabric) or polyamide filaments in both directions (PP fabric). Furthermore, polyester, polyamide and cotton threads in

Chain direction and polyamide and cotton threads are used in the weft direction (EP-B-PB fabric). Because PP fabric in the longitudinal and transverse directions

stretch comparatively strong and thus well cover the material to be transported, this type of fabric represents an advantageous solution for fabric-based double conveyor belts and can preferably be used.

The present invention also relates to a conveyor belt for use as a carrying belt and / or as a cover belt of a double conveyor belt as described above, wherein the support-side cover plate has a profiling at least in sections.

The present invention also relates to a Doppelgurtförderanlage with a

Double conveyor belt as previously described.

An embodiment and further advantages of the invention are described below

Explained in connection with the following figures. It shows:

1 is a perspective schematic representation of a Doppeltgurtförderanlage according to the prior art;

Fig. 2 is a schematic representation of a cross section of the Doppeltgurtförderanlage the

Fig. 1; Fig. 3 is a perspective schematic view of a fiction, contemporary

Doppeltgurtförderanlage; and

Fig. 4 is a schematic representation of a cross section of the invention

Double belt conveyor of Fig. 3.

Fig. 1 shows a perspective schematic representation of a Doppelgurtförderanlage 2 according to the prior art. Fig. 2 shows a schematic representation of a

The double-belt conveyor system 2 extends essentially in a longitudinal direction X into which the belt running direction Q also extends. Perpendicular to the longitudinal direction X, the transverse direction Y and the height Z extend as a Cartesian coordinate system.

The double belt conveyor 2 has a double conveyor belt 1, which consists of a first conveyor belt 10 as a carrier belt 10 and a second conveyor belt 15 as a cover belt 15. The support belt 10 and the cover belt 15 each have a support-side cover plate 11, 16, which face each other to receive and to hold between them a material to be transported 3 in the form of a loose bulk material 3. The support belt 10 and the cover belt 15 each have their support-side cover plate 11, 16 facing away from a cover plate 12, 17, which is in contact with the support rollers 20 and the press rollers 21 of the Doppeltgurtförderanlage 2 and held by these or to be transported Material 3 is pushed out. The press rollers 21 are held by a press roller holder 22. The support belt 10 and the cover belt 15 each have in the longitudinal direction X extending tension members 13, 18 in the form of steel cables 13, 18 without layers of fabric, which serve to transmit the tensile forces. Alternatively, the use of fabric layers 13, 18 as a tensile carrier 13, 18 or a combination of steel cables 13, 18 and fabric layers 13, 18 as a tensile carrier 13, 18 would be possible. The steel cables 13, 18 are embedded in the elastomeric material of the support belt 10 and the cover belt 15, respectively. The material to be transported 3 is received and held in a central belt zone A of the support belt 10 and the cover belt 15. Each on both sides of the central belt zone A in the transverse direction Y, the support belt 10 and the cover belt 15 on a first and second edge zone B, C, which touch each other in the height Z directly to the

transporting material laterally in the transverse direction Y in the middle belt zone A.

to keep impermeable.

3 shows a perspective schematic illustration of a double belt conveyor 2 according to the invention. FIG. 4 shows a schematic representation of a cross section of the double belt conveyor 2 according to the invention of FIG. 3.

The fiction, contemporary Doppeltgurtförderanlage 2 differs from the known Doppeltgurtförderanlage 2 according to FIGS. 1 and 2 that both the support-side cover plate 11 of the support belt 10 and the support-side cover plate 16 of the cover belt 15 a profiling 14, 19 in the form of an oblique cam profile 14, 19, which projects from the surface of the support belt 10 and the cover belt 15 into the material 3 to be transported. In this way, both a positive fit between the support belt 10 and cover belt 15 and the material to be transported 3 is achieved as well as the frictional grip by the internal friction of the material to be transported 3 and the friction against the surface of the support belt 10 and Deckgurts 15 improved , The oblique cam profiling 14, 19 has diagonal elements 14a, 19a, which extend in both the longitudinal direction X and in the transverse direction Y of the Doppeltfördergurts 1, the diagonal elements 14a, 19a in pairs together give a V-shape, the tip 14b, 19b in the longitudinal direction X is aligned opposite to the conveying direction Q.

In this way, according to the invention, the holding forces between the carrier belt 10 and the cover belt 15 can be increased relative to the material 3 to be transported, so that with equally strong holding forces, the number of support rollers 20 and / or the press rollers 21 or the contact pressure of the cover plates 11, 16 can be reduced to the material 3 to be transported. This can be the acquisition and Reduce maintenance costs and the associated costs of the double belt conveyor 2.

List of Reference Numerals (part of the description)

A middle belt zone, material zone

B first edge zone

C second edge zone

Q conveying direction, belt running direction

X longitudinal direction, length

Y transverse direction, width

Z height, vertical direction

1 double conveyor belt

10 first conveyor belt, carrying belt

11 support-side cover plate, supporting side of the support belt 10

12 running side cover plate, running side of the support belt 10th

13 tension members, strength members of the support belt 10, steel cables, fabric layers

14 profiling of the support side 11 of the support belt 10th

14a diagonal elements of the profiling 14 of the support side 11 of the support belt 10th

14b point of the profiling 14 of the support side 11 of the support belt 10th

15 second conveyor belt, cover belt

16 load-side cover plate, supporting side of the cover belt 15th

17 running cover plate, running side of the cover belt 15th

18 tension members, reinforcements of deck belt 15, steel cables, fabric layers

19 (oblique cam) Pro filing the support side 16 of the cover belt 15th

19 a diagonal elements of the profiling 19 of the support side 16 of the cover belt 15th

19b tip of the profiling 19 of the support side 16 of the cover belt 15th

2 double belt conveyor

20 carrying rollers

21 press rolls

22 Press roller holder, press roller guide

3 material to be transported, bulk material

Claims

claims

A double conveyor belt (1) for use in a double belt conveyor (2), comprising a first conveyor belt (10) for use as a carrier belt (10), and

a second conveyor belt (15) for use as a cover belt (15),

wherein between the support-side cover plate (11) of the first conveyor belt (10) and the support-side cover plate (16) of the second conveyor belt (15) to be transported

Material (3) can be recorded

characterized in that

at least one support-side cover plate (11, 16) has a profiling (14, 19) at least in sections.

2. Double conveyor belt (1) according to claim 1,

wherein both the support-side cover plate (11) of the first conveyor belt (10) and the support-side cover plate (16) of the second conveyor belt (15) at least partially profiling (14, 19).

3. double conveyor belt (1) according to claim 1 or 2,

wherein the profiling (14; 19) is formed at least partially of the support-side cover plate (11, 16) perpendicularly outstanding, preferably edge-shaped.

4. Double conveyor belt (1) according to one of the preceding claims,

wherein the profiling (14, 19) is formed as part of the support-side cover plate (11, 16).

5. Doppeltfördergurt (1) according to one of the preceding claims,

the profiling (14; 19) being an oblique cam profiling (14; 19) having diagonal elements (14a; 19a) extending in both the longitudinal (X) and transverse (Y) directions of the double conveyor belt (1), wherein the diagonal elements (14a, 19a) in pairs together give each a V-shape whose tip (14b, 19b) is aligned in the longitudinal direction (X) opposite to the conveying direction (Q).

6. Double conveyor belt (1) according to one of the preceding claims,

wherein the profile (14; 19) in width (Y) substantially corresponds to the width of a central belt zone (A) which is adapted to receive the material (3) to be transported.

7. Double conveyor belt (1) according to claim 6,

wherein at least one support-side cover plate (11; 16), preferably both support-side cover plates (11; 16), in the width (Y) adjacent to the central belt zone (A), preferably in the width (Y) on both sides of the central belt zone (A), an edge zone (B; C) which is / are formed free of the profiling (14; 19).

8. Double conveyor belt (1) according to one of the preceding claims,

wherein the first conveyor belt (10) and / or the second conveyor belt (15) has a

comprises / have elastomeric material in which a plurality of tension members (13), in particular of steel cables (13) and / or of fabric layers (13) is embedded.

9. conveyor belt (10; 15) for use as a carrying belt (10) and / or as a cover belt (15) of a double conveyor belt (1) according to one of the preceding claims,

wherein the support-side cover plate (11; 16) at least in sections has a profiling (14; 19).

10. Double belt conveyor (2), with

a double conveyor belt (1) according to one of claims 1 to 9.