Bent belt conveyor

Abstract

A curved belt conveyor includes an inner profile extending along a section of a circle having an inner radius and an angle; an outer contour (2) extending along a section of a circle having an outer radius (Ro) and the same angle; an endless belt (3), the endless belt (3) being mounted on two end conveyor rollers, the two end conveyor rollers being arranged between the inner contour and the outer contour; at least one bending guide (5) having two slots (53) facing the outer contour (2), the at least one bending guide being arranged on the outer contour (2) between the two end conveying rollers; the invention relates to a conveyor belt (1) comprising a curved guide (5) and two end conveyor rollers (6), said curved guide (5) having an inner contour (6), and a skid (6) having a lug (61) facing the inner contour, said skid being arranged on an inner belt surface (30) in the region of an outer belt edge (31), at least some of the skid (6) located between the two end conveyor rollers being guided by means of their lug (61) in a corresponding slot (53) of the curved guide (5).

Description

Technical Field

[0001] The present invention relates to a conveyor, in particular to a curved part of a belt conveyor. Background Art

[0002] For curved belt conveyors, the belt is arranged on rollers that are not parallel to each other but arranged at an angle to each other. Due to this design, the resultant force from the rollers acting on the belt is directed towards the inside of the belt curve. If the belt is allowed to move towards the inside of the belt curve, the tension on the belt is reduced, which results in relaxation of the belt and a reduction in the static friction between the belt and the rollers.

[0003] EP1879815 discloses a known embodiment of such a curved belt conveyor. Therein, anti-slip elements are arranged on the inner surface of the belt in the region of the outer belt edge, and guide rollers are arranged on a section of a circle. The guide rollers exert a force on the anti-slip elements from the inside of the belt curve, whereby the belt is forced toward the outside of the belt curve.

[0004] Such designs are complex and costly to manufacture, assemble and maintain. Summary of the invention

[0005] The object of the present invention is to provide a curved belt conveyor which is easy and rational to manufacture, assemble and maintain.

[0006] This object is achieved by a curved belt conveyor having the features of claim 1. Further exemplary embodiments of the curved belt conveyor are defined by the features of the further claims.

[0007] The curved belt conveyor according to the invention comprises an inner profile extending along a segment of a circle with an inner radius and an angle, an outer profile extending along a segment of a circle with an outer radius and the same angle, an endless belt mounted on two end conveying rollers, the two end conveying rollers being arranged between the inner and outer profiles in the end regions of both. At least one curved guide having two slots facing the outer profile is arranged on the outer profile and between the two end conveying rollers. Anti-slip elements having lugs facing the inner profile are arranged on the inner belt surface in the region of the outer belt edge, wherein at least some of the anti-slip elements located between the two end conveying rollers are guided in corresponding slots of the curved guide elements by means of their lugs.

[0008] With this design, the interaction of the anti-slip element with the curved guide causes the endless belt to be pulled towards the outer contour, which prevents the endless belt from moving towards the inner contour and additionally tensions the endless belt between the two end conveyor rollers. This curved belt conveyor is easy to assemble and maintain.

[0009] In the above, the inner radius associated with the inner contour corresponds to the inner contour of the annular band and is located on the side of the inner contour facing the outer contour, and the outer radius associated with the outer contour corresponds to the outer contour of the annular band and is located on the side of the outer contour facing the inner contour.

[0010] Two or more curved guides may be arranged between two end conveying rollers aligned with each other, wherein adjacent curved guides may be in contact with each other, or they may be spaced apart from each other.

[0011] In order to additionally support the endless belt, at least one intermediate conveyor roller can be arranged between the two end conveyor rollers. On its outer side, at least one intermediate conveyor roller can be arranged on a curved guide or can be arranged on the outer profile, between two adjacent curved profiles. On its inner side, at least one intermediate conveyor roller can be arranged on the inner profile. There can be two or more intermediate conveyor rollers, which are arranged equidistantly between the two end conveyor rollers. The intermediate conveyor rollers can have the same diameter as the end conveyor rollers, or their diameter can be smaller. If the diameter is smaller, the intermediate conveyor rollers are arranged so that they contact the inner belt surface on their upper side.

[0012] In one embodiment, the bending guide comprises a curved base strip having a curvature radius corresponding to the outer radius, two branches extending vertically from the base strip toward the center of curvature, and two fins each arranged on the free ends of the two branches on the side of the branch opposite to the other branch. The fins extend away from the center of curvature, resulting in two slots each being formed between the corresponding branch and the corresponding fin.

[0013] In one embodiment, the maximum distance between the outer surfaces of the two tabs of the curved guide corresponds to the diameter of a roller in the end delivery roller having a roller radius.

[0014] In one embodiment, the maximum distance between the inner surfaces of the two branches of the curved guide corresponds to the diameter of a pulley of a conveyor roller having a pulley radius.

[0015] In one embodiment, the two branches and the two fins are integrally formed with the base band as a single piece. Alternatively, they may be assembled from separate components.

[0016] In one embodiment, each cleat includes a base body and is disposed on an inner belt surface having a base body outer surface. A lug extends laterally from the base body, wherein the cleat inner surface is the same for the base body and the lug, and wherein the base body outer surface is offset from the lug outer surface.

[0017] In one embodiment, the extension extends laterally from the base body, parallel to and offset from the lug, thereby forming a channel between the lug and the extension, and wherein the base body outer surface is the same for the base body and the extension.

[0018] In one embodiment, the maximum distance between two tabs corresponds to the roller diameter minus twice the thickness of the extension of the cleat.

[0019] In one embodiment, at least a portion of the outer surface of the base body is curved, and its radius of curvature corresponds to the roller radius of the roller of the end conveyor roller, and / or wherein at least a portion of the inner surface of the anti-slip member is curved, and its radius of curvature corresponds to the pulley radius of the pulley of the end conveyor roller.

[0020] In one embodiment, the lug is integrally formed as a single piece with the base body.Alternatively, the lug may be fixed to the base body.

[0021] In one embodiment, the extension is integrally formed as a single piece with the base body.Alternatively, the extension may be fixed to the base body.

[0022] In one embodiment, at least one hole extends through the base body and / or wherein at least one hole extends through the extension, and wherein each anti-slip member is fixed to the belt by at least one fixing element arranged in the at least one hole. At least one hole may be a through hole, and the fixing element is a rivet, such as a hollow rivet, or a fixing bushing, such as a clamping bushing. Optionally, the at least one hole is a threaded hole and the fixing element is a screw.

[0023] In one embodiment, the end conveying roller comprises a roller and a pulley, wherein the pulley is arranged on a side of the roller facing the outer contour. The inner belt surface is in contact with the roller, and the inner surface of the anti-slip member is in contact with the pulley.

[0024] In one embodiment, the roller and the pulley are mounted on a common shaft. The roller and the pulley can be fixed to each other, or they can be fixed to the shaft. In both cases, relative movement between the roller and the pulley is prevented.

[0025] In one embodiment, the bending guide comprises a wing end face on the side of each wing facing the outer contour, wherein the wing end face is in contact with some anti-skid members. Alternatively, the anti-skid member comprises a lug end face on the side of the lug facing the inner contour, wherein the lug end faces of some anti-skid members are in contact with the bending guide.

[0026] In one embodiment, the pulley includes a skin surface in contact with the cleat inner surfaces of some of the cleats. The cleat includes a lug end face on a side of the lug facing the inner profile, and wherein the pulley includes a collar extending radially outward from the skin surface around its entire circumference and in contact with some of the lug end faces.

[0027] The features of the above-described embodiments of the curved belt conveyor may be used in any combination unless they contradict each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Embodiments of the present invention are described in more detail below with reference to the accompanying drawings. These are for illustrative purposes only and should not be construed as limiting.

[0029] Figure 1 is a perspective view of a curved belt conveyor according to the present invention;

[0030] Figure 2 yes Figure 1 A perspective view of the end conveying rollers and curved guides;

[0031] Figure 3 It passes through Figure 1 A partial cross-sectional view of the belt and the curved guide;

[0032] Figure 4 yes Figure 1 A perspective view of an end region of a curved guide;

[0033] Figure 5 yes Figure 1 A partial cross-sectional view of a belt and an end conveyor roller;

[0034] Figure 6 yes Figure 1 A front view of one end conveyor roller, belt and curved guide;

[0035] Figure 7 is a perspective view of a first embodiment of an anti-slip member according to the present invention;

[0036] Figure 8 yes Figure 1 A partial perspective view of a belt with anti-slip parts;

[0037] Fig. 9 is a perspective view of a second embodiment of an anti-slip member according to the present invention;

[0038] Fig.10 is through Fig. 9 A partial cross-sectional view of a second embodiment of a belt of an anti-slip member and passing through a curved guide member; and

[0039] Fig.11 is a partial cross-sectional view of a belt and curved guide, wherein the anti-slip member has a longer lug. DETAILED DESCRIPTION

[0040] Figure 1 A perspective view of a curved belt conveyor according to the invention is shown. It comprises an inner profile 1 extending along a segment of a circle with an inner radius Ri and an angle A, an outer profile 2 extending along a segment of a circle with an outer radius Ro and the same angle A, and an endless belt 3.

[0041] Figure 2 Shows Figure 1 Perspective view of the end conveying rollers 4 and the curved guides of FIG. The endless belt 3 is mounted on two end conveying rollers 4 which are arranged between the inner contour 1 and the outer contour 2 in the two end regions of the inner contour 1 and the outer contour 2. The curved guide 5 is arranged between the two end conveying rollers 4. Each end conveying roller 4 comprises a roller 40 and a pulley 41 which are arranged on a common shaft 42.

[0042] Figure 3 Shown through Figure 1 A partial cross-sectional view of the belt 3 and the curved guide 5, and Figure 4 Shows Figure 1 2 . A perspective view of an end region of a bending guide of FIG. The bending guide 5 comprises a bending base strip 50, the radius of curvature of which corresponds to the outer radius Ro. Two branches 51 extend vertically from the upper and lower ends of the base strip 50 towards the center of curvature, i.e. towards the inner contour. A wing 52 is arranged on the free end of each of the two branches 51. The wing is produced by folding each branch backward on the outer side of the bending guide 5, so that a wing 51 is produced on the side of one branch 51 opposite to the other branch 51, wherein the wing 52 extends away from the center of curvature, parallel to the branch 51. There is a wing end face 520 on the free end of each of the two wing tabs 52. A slot 53 is formed between the corresponding branch 51 and the corresponding wing tab 52. On the edge of the bending guide 5 facing the slot 53, a chamfer 55 is provided in the end region of the bending guide 5. A hole 54 is provided in the base strip 50 of the bending guide 5, in which a fixing screw 8 can be provided to fix the bending guide 5 to the outer contour 2. The anti-slip 6 is arranged on the inner belt surface 30 and is fixed to the inner belt surface in the area of ​​the outer belt edge 31 by means of a fixing bushing 7. The anti-slip 6 is spaced apart from the outer belt edge 31, but can also be flush with it. The lug 61 of the anti-slip 6 extends parallel to the inner belt surface 30 away from the outer contour 2 and protrudes in the slot 53 of the curved guide 5. The wing end face 520 of the curved guide 5 abuts the base body 60 of the anti-slip 6 on the side opposite to the outer contour 2.

[0043] Figure 5 Shown through Figure 1A partial cross-sectional view of a belt 3 and an end conveyor roller 4. The end conveyor roller 4 comprises a roller 40 and a pulley 41 fixed to a common shaft 42. The shaft 42 is a hollow profile rotatably mounted to the outer profile 2 and the inner profile 1 (not shown). The pulley 41 has a skin surface 410 with a pulley radius Rp, which comes into contact with the anti-skid inner surface 601 during deflection of the anti-skid 6. A collar 411 is provided on the side of the pulley opposite to the outer profile 2, which extends radially outwards from the skin surface 410 around its entire circumference and wherein the radius of the collar skin surface corresponds to the roller radius Rr. The lug end face 611 of the anti-skid 6 abuts the side surface of the collar 411.

[0044] Figure 6 Shows Figure 1 A front view of one end of the conveyor roller 4, the belt 3 and the curved guide 5. The pulley 41 has cams 412 extending radially outward from the skin surface 410 and spaced equidistantly around its circumference. The distance between two adjacent cams 412 corresponds to the width of the anti-skid 6. The rotation of the shaft 42 is transmitted to the belt 3 via the anti-skid 6 and the cams 412. During operation, that is, when the curved belt conveyor is running, the anti-skid 6 is guided in the slot 53 of the curved guide 5 between its branches 51 and its fins 52 after leaving the recess between two adjacent cams 412 or before entering the recess. The bevel 55 on the edge of the curved guide 5 facing the pulley 41 helps to align the anti-skid 6 with the slot 53.

[0045] Figure 7 A perspective view of a first embodiment of an anti-slip member 6 according to the present invention is shown. It comprises a base body 60 having a base body outer surface 600 and a lug 61 extending transversely from the base body 60, wherein the anti-slip member inner surface 601 is identical for the base body 60 and the lug 61. The base body outer surface 600 deviates from the lug outer surface 610. A hole 62 extends from the base body outer surface 600 through the base body 60 to the anti-slip member inner surface 601. Most of the base body outer surface 600 is curved, and its radius of curvature corresponds to the roller radius Rr. There are ridges 63 extending from the outer body surface 600. They are oriented in the extension direction of the lug 61 and perpendicular thereto. The ridges 63 prevent the anti-slip member 6 from rotating when mounted to the endless belt 3. The anti-slip member inner surface 601 is completely curved, and its radius of curvature corresponds to the pulley radius Rp. The edge of the lug 61 is rounded.

[0046] Figure 8 Shows that there is Figure 16. The anti-skid elements are arranged on the inner belt surface 30, spaced apart from the outer belt edge 31 and spaced equidistantly around the corresponding circumference. The distance from the anti-skid element 6 to the outer belt edge 31 corresponds to the thickness of the anti-skid element 6. Each anti-skid element 6 is fixed to the endless belt 3 by a fixing bushing 7.

[0047] Fig. 9 A perspective view of a second embodiment of an anti-slip member 6 according to the present invention is shown. Similar to the first embodiment, the second embodiment comprises a base body 60 having a base body outer surface 600 and a lug 61 having an anti-slip member inner surface 601 common to the base body 60. Compared to the first embodiment, the second embodiment has no hole extending through the base body and no ridge extending from the base body outer surface. In addition to the features of the first embodiment, the second embodiment comprises an extension 64 extending laterally from the base body 60, parallel to and offset from the lug 61, thereby forming a groove 65 between the lug 61 and the extension 64. The base body outer surface 600 is the same for the base body 60 and the extension 64. Two holes 62 are provided on the extension 64 near the base body 60, wherein one hole is arranged in the region of the lug 61 and the other hole is arranged in the region of the free end of the extension 64. The middle portion of the base body outer surface 600 comprises a hole and is straight. The two lateral sections 6001 of the base body outer surface 600 are curved and their radius of curvature corresponds to the roller radius Rr.

[0048] Fig.10 Shown is a Fig. 9 3 and a partial cross-sectional view of a second embodiment of an annular belt 3 of an anti-slip member and passing through a curved guide 5. The anti-slip member 6 is arranged on the inner belt surface 30 by a fixing element (not shown), and the fixing element is arranged in a hole 62 and a corresponding hole of the annular belt. The base body 60 of the anti-slip member 6 is flush with the outer belt edge 31. The second embodiment of the curved guide 5 includes a base belt 50, two branches 51 connected to the free ends of the base belt 50 extending perpendicularly to the base belt 50. A straight section 56 is connected to each of the free ends of the branches 51, and the free end extends parallel to the base belt 50 in a direction opposite to the other straight section 56. A wing 52 is connected to each free end of the straight section 56, and the straight section extends perpendicularly to the base belt toward the base belt 50. The slot 53 of the curved guide 5 is defined by a portion of the outer surface of the branch 51 and the surface of the straight section 56 facing the base belt 50 and the surface of the wing 52 facing the other wing. The lug 61 of the anti-slip member 6 protrudes into the slot 53 of the curved guide member 5, and the wing 52 of the curved guide member 5 protrudes into the groove 65 of the anti-slip member 6. The lug end face 611 of the anti-slip member 6 abuts the straight section 56 of the curved guide member 5, and the wing end face 520 of the curved guide member 5 is spaced apart from the base body 60 of the anti-slip member 6.

[0049] Fig.11 A partial cross-sectional view through the endless belt 3 and the curved guide 5 is shown, wherein the anti-slip 6 has a longer lug 61. The lug end face 611 of the anti-slip 6 abuts the circular section between the branch 51 and the corresponding wing 52 of the curved guide 5, and the wing end face 520 of the curved guide 5 is spaced apart from the base body 60 of the anti-slip 6.

[0050] Reference numerals list

[0051] 1 Inner contour

[0052] 2 Outer contour

[0053] 3 belts

[0054] 30 Inner belt surface

[0055] 31 Outer band edge

[0056] 4 End conveyor rollers

[0057] 40 Roller

[0058] 41 Pulley

[0059] 410 Skin Surface

[0060] 411 Ring

[0061] 412 Cam

[0062] 42 Axis

[0063] 5 Bending guide

[0064] 50 Baseband

[0065] 51 branches

[0066] 52 Wings

[0067] 520 Wing end face

[0068] 53 Slot

[0069] 54 holes

[0070] 55 bevel

[0071] 56 straight section

[0072] 6 Anti-slip parts

[0073] 60 Base body

[0074] 600 Base body outer surface

[0075] 6001 Lateral section

[0076] 601 Anti-slip inner surface

[0077] 61 Lug

[0078] 610 Lug outer surface

[0079] 611 Lug end face

[0080] 62 holes

[0081] 63 Ridge

[0082] 64 extension

[0083] 65 Groove

[0084] 7 Fixed sleeve

[0085] 8 Fixing screws

[0086] A angle

[0087] Ri inner radius

[0088] Ro outer radius

[0089] Rr Roller radius

[0090] Rp pulley radius

Claims

1. A curved belt conveyor, comprising: an inner profile (1) extending along a segment of a circle having an inner radius (Ri) and an angle (A); an outer contour (2) extending along a section of a circle having an outer radius (Ro) and a uniform angle (A); an endless belt (3) mounted on two end conveying rollers (4) arranged between the inner contour (1) and the outer contour (2) in the end regions of both the inner contour (1) and the outer contour (2); at least one curved guide (5) having two slots (53) facing the outer contour (2), the at least one curved guide (5) being arranged on the outer contour (2) between the two end conveying rollers (4); and anti-slip elements (6) having lugs (61) facing the inner contour (1), the anti-slip elements being arranged on the inner belt surface (30) in the region of the outer belt edge (31), wherein at least some of the anti-slip elements (6) located between the two end conveyor rollers (4) are guided with their lugs (61) in corresponding slots (53) of the curved guide element (5).

2. The curved belt conveyor according to claim 1, wherein: The bending guide (5) comprises a bending base band (50), two branches (51) and two fins (52), wherein the curvature radius of the bending base band corresponds to the outer radius (Ro), the two branches extend vertically from the base band (50) toward the center of curvature, the two fins (52) are respectively arranged on the free ends of the two branches (51) and are located on the side of the branch (51) opposite to the other branch (51), wherein the fins (52) extend away from the center of curvature, and wherein the two slots (53) are respectively formed between the corresponding branch (51) and the corresponding fin (52).

3. The curved belt conveyor according to claim 2, wherein: The maximum distance between the outer surfaces of the two wings (52) of the curved guide (5) corresponds to the diameter of the roller (40) of the end conveying roller (4) with the roller radius (Rr).

4. The curved belt conveyor according to claim 2 or 3, wherein: The maximum distance between the inner surfaces of the two branches (51) of the curved guide (5) corresponds to the diameter of the pulley (41) of the end conveying roller (4) with the pulley radius (Rp).

5. The curved belt conveyor according to any one of claims 2 to 4, wherein: The two branches (51) and the two wings (52) are integrally formed as a single piece with the base band (50).

6. A curved belt conveyor according to any one of the preceding claims, wherein: Each anti-slip member (6) includes a base body (60) and is arranged on the inner belt surface (30) by means of a base body outer surface (600), wherein the lug (61) extends laterally from the base body (60), wherein the anti-slip member inner surface (601) is the same for the base body (60) and the lug (61), and wherein the base body outer surface (600) deviates from the lug outer surface (610).

7. The curved belt conveyor according to claim 6, wherein: An extension (64) extends laterally from the base body (60), parallel to the lug (61) and offset from the lug (61), thereby forming a groove (65) between the lug (61) and the extension (64), and wherein the base body outer surface (600) is the same for the base body (60) and the extension (64).

8. The curved belt conveyor according to claim 7, wherein: The maximum distance between the two wings (52) of the curved guide (5) corresponds to the roller diameter (Rr) minus twice the thickness of the extension (64) of the anti-slip (6).

9. The curved belt conveyor according to any one of claims 6 to 8, wherein: At least a portion of the outer surface (600) of the base body is curved and its radius of curvature corresponds to the roller radius (Rr) of the roller (40) of the end conveying roller (4), and / or at least a portion of the inner surface (601) of the anti-slip member is curved and its radius of curvature corresponds to the pulley radius (Rp) of the pulley (41) of the end conveying roller (4).

10. The curved belt conveyor according to any one of claims 6 to 9, wherein: The lug (61) is integrally formed as a single piece with the base body (60).

11. The curved belt conveyor according to any one of claims 7 to 10, wherein: The extension (64) is integrally formed as a single piece with the base body (60).

12. The curved belt conveyor according to any one of claims 6 to 11, wherein: At least one hole (62) extends through the base body (60) and / or wherein at least one hole (62) extends through the extension (64) and wherein each anti-slip member (6) is fixed to the belt (3) by at least one fixing element (7) arranged in the at least one hole (62).

13. The curved belt conveyor according to any one of claims 6 to 12, wherein: The end conveying roller (4) comprises a roller (40) and a pulley (41) arranged on the side of the roller (40) facing the outer contour (2), wherein the inner belt surface (30) is in contact with the roller (40), and wherein the inner surface (601) of the anti-slip member is in contact with the pulley (41).

14. The curved belt conveyor according to any one of claims 6 to 13, wherein: The roller (40) and the pulley (41) are mounted on a common shaft (42).

15. The curved belt conveyor according to any one of claims 2 to 14, wherein: The bending guide (5) comprises a wing end surface (520) on the side of the wing (52) facing the outer contour (2), the wing end surface (520) being in contact with some of the anti-slip elements (6), or wherein, The anti-slip member (6) comprises a lug end surface (611) on the side of the lug (61) facing the inner contour (1), wherein the lug end surfaces (611) of some of the anti-slip members (6) are in contact with the bending guide member (5).

16. The curved belt conveyor according to any one of claims 4 to 15, wherein: The pulley (41) includes a skin surface (410) that contacts the anti-slip member inner surface (601) of some of the anti-slip members (6), wherein the anti-slip member (6) includes a lug end surface (611) on the side of the lug (61) facing the inner contour (1), and wherein the pulley (41) includes a ring (411) extending outward from the skin surface (410) and contacting some of the lug end surfaces (611).

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