Device for oscillatingly supporting a guide roller of a belt conveyor and belt conveyor having the device

Abstract

A device for the oscillating support of a guide roller (10) having a longitudinal axis (12) of a circulating conveyor belt in a hinged region (20, 21) of a belt conveyor device secured by a support, with an oscillating arm (30, 31) extending from the guide roller (10) in a direction of movement (L) of the conveyor belt perpendicular to the longitudinal axis (12), the guide roller (10) being rotatably supported on the oscillating arm about its longitudinal axis (12) and the oscillating arm having an oscillating element (40) spaced apart from the guide roller (10) in the direction of movement (L), with an oscillating bearing (22, 23) arranged on the hinged region (20, 21) for supporting the oscillating element (40) for the oscillating movement of the oscillating arm (30, 31) about an oscillating axis (44) parallel to the longitudinal axis (12) of the guide roller (10) between a running position and a stopped running position, is further improved according to the invention in that the oscillating bearing (22, 23) has a bearing surface (24, 25) which is configured in the form of an open circular arc in a cross section perpendicular to the oscillating axis (44), the opening (26, 27) of the bearing surface representing a central angle of less than 180° and a sliding body (41, 42) being configured on the oscillating element (40), which is guided rotatably fixed by the support on the bearing surface (24, 25) in an oscillating position region containing the running position and which can be guided through the opening (26, 27) in the stopped running position.

Description

Technical Field

[0001] This invention relates to a device for oscillatingly supporting a guide roller of a circulating conveyor belt having a longitudinal axis on a hinged area of ​​a belt conveyor fixed by a bracket. The device comprises: an oscillating arm extending from the guide roller along a direction of movement of the conveyor belt orthogonal to the longitudinal axis; the guide roller being rotatably supported on the oscillating arm about its longitudinal axis; and the oscillating arm having an oscillating element spaced apart from the guide roller along the direction of movement; an oscillating support disposed on the hinged area for supporting the oscillating element so that the oscillating arm oscillates between an operating position and a stopped position of the guide roller about an oscillating axis parallel to the longitudinal axis of the guide roller; and a belt conveyor having the device. Background Technology

[0002] Belt conveyors are used to transport objects from one location to another. They have numerous applications, including in the food industry where they may also function as weighing devices. A belt conveyor typically comprises a drive unit and a guide unit. The drive unit has driven guide rollers, and the guide unit has free-moving guide rollers arranged at opposite ends of a support frame along the direction of movement of the conveyor belt. The conveyor belt wraps around the driven guide rollers and the free-moving guide rollers and is taut between these two rollers.

[0003] Maintenance work on conveyor systems, such as cleaning or replacing components, often requires removing the conveyor belt or rollers. Solutions to this problem have been proposed in the prior art.

[0004] EP 1 101 715 A1 discloses a belt conveyor in which a drive unit and a driven guide roller can be separated from each other by oscillating the drive unit, and then the driven guide roller can be released from a support. However, the oscillation mechanism is complex to construct.

[0005] In the belt conveyor disclosed in JP 2010-37073 A, the guide rollers are supported in a support portion that can swing in the direction of the longitudinal axis. The swinging movement of the support portion allows the guide rollers to be loaded and removed. However, an additional tensioning mechanism is required to tension the conveyor belt.

[0006] KR 2005 0038299 A discloses a belt conveyor in which the shaft of a guide roller is supported in an L-shaped guide device and can be fixed there by means of bolts. The bolts also achieve the adjustment of the belt tension of the conveyor belt. However, loosening the guide roller from the guide device requires the use of tools and is labor-intensive.

[0007] However, in CN 106586456 A, the roller shaft of the conveying device is supported in a curved slot of the carrier. The roller shaft can be inserted into and removed from the slot without the use of tools. However, in this arrangement, there is a risk that the roller may accidentally loosen from the slot.

[0008] To adjust the belt tension of a conveyor belt, WO 2006 094417 A1 discloses a tensioning device for a conveyor belt in a belt conveyor, which includes a tension roller capable of oscillating between a position that tensions the conveyor belt and a position that slacks the conveyor belt. The tension roller cannot be released from the belt conveyor without tools. Furthermore, this tensioning mechanism requires additional components, thereby complicating the structure of the belt conveyor.

[0009] Figure 9 illustrates an alternative solution of the prior art, in which the additional tension roller can be eliminated. The figure shows a perspective view of the area of ​​the belt conveyor with guide roller 100. Guide roller 100 is pivotally supported on the support of the belt conveyor. Guide roller 100 is rotatably fixed about its longitudinal axis 120 to swing arms arranged on both sides of guide roller 100, wherein only one of the two swing arms 300 can be seen in Figure 9. Swing arms 300 are respectively fixed to the support in the area 200 fixed by the support by means of swing elements 400. In the view shown in Figure 9, guide roller 100 is arranged in its operating position. Stops 510 arranged on swing arms 300 and mating stops 520 arranged on the support fix the operating position of guide roller 100. Swing arms 300 can swing to the right in the direction of arrow P indicated in the figure. This loosens the conveyor belt 1000 surrounding guide roller 100 and allows the conveyor belt to be removed from the belt conveyor. Furthermore, the conveyor belt 1000 can be re-tensioned by rotating the bolt 700. However, this requires the use of tools. Releasing the swing arm 300 from the conveyor also requires the use of tools.

[0010] Therefore, the above solution cannot easily release the guide rollers and conveyor belt while reliably supporting the guide rollers during operation. Summary of the Invention

[0011] In view of the above-mentioned problems in the prior art, the object of the present invention is to provide an apparatus that not only reliably supports the guide roller on the belt conveyor but also enables easy removal of the guide roller and the conveyor belt from the belt conveyor.

[0012] According to the present invention, this task is accomplished by means of a device of the type described at the beginning, wherein the swing support has a support surface constructed in the form of an open arc in a section perpendicular to the swing axis, the opening of the support surface having a central angle of less than 180°, and a slider is constructed on the swing element, the slider being rotatably guided on the support surface by a support fixed in the swing position region including the operating position, and the slider being able to be guided through the opening in the stopped operating position.

[0013] In other words, according to the invention, the supporting surface supports the sliding body in a rotationally movable yet translationally fixed manner within the swing position region. Only in the swing position outside the swing position region, at the stop position, can the sliding body be translated through the opening. Conversely, the sliding body is constructed to resist torsion with respect to the swing arm.

[0014] Because the arc-shaped opening of the swing support has a central angle of less than 180°, the arc-shaped support surface extends within an angle range greater than 180° in the cross-section and surrounds the sliding body within this angle range in the swing position region. Therefore, the sliding body cannot be guided through the opening in the swing position region, especially in the operating position of the guide roller. In other words, the guide roller is reliably fixed to the hinge area in the operating position and cannot be removed from the belt conveyor.

[0015] If the guide roller swings from the operating position to the stopped position, the sliding body can be guided through the opening. The guide roller can then be removed from the belt conveyor.

[0016] In addition, the guide rollers swing out from the operating position to loosen the conveyor belt surrounding them. The conveyor belt can then be detached from the guide rollers and removed from the belt conveyor.

[0017] In other words, according to the present invention, it is possible to install or remove the conveyor belt from the belt conveyor and to install or remove the guide roller from the belt conveyor without using tools.

[0018] The hinged area fixed by the bracket can be integrally constructed with the bracket containing the conveyor. Alternatively, the hinged area fixed by the bracket can be fixed to the bracket containing the conveyor.

[0019] The swing support portion can be configured as an open recess in the direction of the swing axis. Alternatively, the swing support portion can be closed in the direction of the swing axis at one end region.

[0020] In one embodiment of the invention, a channel for the slider can be constructed in the hinge region, extending from the opening to the free outlet. This allows the slider to be held more reliably on the swing support in the swing position region. In the stopped position, the slider can be guided through the channel. The channel can extend from the opening in a direction that is perpendicular to the longitudinal axis of the guide roller and the swing axis of the swing element, and the connecting line is inclined at an acute angle toward the guide roller. This further improves the more reliable holding of the slider in the swing support.

[0021] In one embodiment of the invention, the swing arm may have a first swing arm and a second swing arm, which are arranged on opposite sides of the guide roller. Furthermore, the swing element may have a first sliding body disposed on the first swing arm and a second sliding body disposed on the second swing arm. The swing support portion may have a first swing support portion receiving the first sliding body and a second swing support portion receiving the second sliding body. The first swing arm and the second swing arm may be mirror-symmetrical about a central plane extending perpendicular to the longitudinal axis. Similarly, the first sliding body and the second sliding body, and / or the first swing support portion and the second swing support portion, may also be mirror-symmetrical about a central plane.

[0022] Furthermore, the swing element may have a bearing shaft extending between the swing arms, a first sliding body and a second sliding body arranged on the axial end region of the bearing shaft, and the central axis of the bearing shaft forms the swing axis.

[0023] In another embodiment of the invention, the device may have a locking device for securing the swing arm in the operating position. The locking device may, for example, have a stop arranged on the swing arm and a mating stop arranged in a hinged area secured by a bracket. In the operating position of the guide roller, the stop and the mating stop abut against each other. Because torque can be applied to the guide roller based on the belt tension force of the conveyor belt surrounding the guide roller, the swing arm can be secured in the operating position by means of the locking device.

[0024] The stops and / or paired stops can be adjusted. The stops and / or paired stops can be configured, for example, as adjusting bolts. The operating position can be adjusted by adjusting the stops and / or paired stops. This also allows adjustment of the belt tension of the conveyor belt surrounding the guide rollers.

[0025] In another possible configuration of the invention, the cross-section of the slider can be generated in a section perpendicular to the swing axis by two circular arcs with the same radius having a common center and two chords connecting the corresponding nearest ends of the different circular arcs to each other, wherein the central angles of the two circular arcs are smaller than the central angle presented by the opening. The geometry of the slider can also be described as follows: in a section perpendicular to the swing axis, the cross-section of the slider is composed of a circle, cut out by two circular arc segments. The two cut edges need not be parallel, however, they are not allowed to intersect inside the circle. The two chords can be parallel to each other and of equal length, however, they are not required to be so. The radius of the circular arcs corresponds to the radius of the supporting surface. In the swing position region, the arcuate surface of the slider is rotatably guided by a bracket on the arcuate segment of the supporting surface of the swing support. In the stopped position, one of the two circular arcs of the slider is arranged opposite the opening of the swing support. Because the central angle of the circular arc of the slider is smaller than the central angle presented by the opening, the slider can be guided through the opening.

[0026] In another embodiment of the invention, the swing arm may be axially fixed. The swing element may, for example, have a diameter in a region adjacent to the slider that is larger than the diameter of the arc-shaped support surface. If the swing support is constructed as a recess open in the direction of the swing axis, the swing element may have a diameter in two regions arranged in the direction of the longitudinal axis on both sides of the slider that is larger than the diameter of the arc-shaped support surface.

[0027] The belt conveyor described at the beginning can be part of a larger conveying system. The belt conveyor can, for example, be part of a weighing system. In this case, balanced guide rollers are preferably used. On the other hand, unbalanced rollers are used for conveyors that do not perform weighing functions. In this case, it is desirable that the device according to the invention has a mistake-proofing principle that prevents unbalanced rollers from being loaded into the belt conveyor of the weighing system.

[0028] Therefore, the compatibility of the guide roller with the hinged area fixed by the bracket can be encoded by two complementary mating parts, one mating part arranged on the oscillating element and the other mating part arranged on the hinged area fixed by the bracket, wherein the two mating parts mate with each other in the assembled position. If now an attempt is made to support a guide roller that is not provided for the defined hinged area on the hinged area, the mating part mounted on the guide roller cannot mate with the mating part mounted on the hinged area. This prevents the slider from being fully inserted into the oscillating support and thus reaching the assembled position. Thus, the user can clearly see that the guide roller selected by the user cannot be assembled on the provided hinged area fixed by the bracket.

[0029] One of the mating parts can be constructed as a concave recess, and the other as a convex protrusion. In the case where the oscillating element has a bearing shaft and the central axis of the bearing shaft is the oscillation axis, the recess can be constructed within the bearing shaft and is circumferential in the azimuth direction. The protrusion can be arranged on the hinge area fixed by the bracket. Alternatively, two concave recesses circumferentially surrounding the bearing shaft can be provided on the bearing shaft, the two recesses being asymmetrically arranged about the axial center of the bearing shaft. That is, one of the recesses is closer to the axial center than the other. Thus, there are two distinguishable assembly positions for the bearing shaft with respect to the oscillating arm. Two protrusions can be provided on the hinge area fixed by the bracket, the protrusions engaging with the recesses in a first assembly position of the bearing shaft, wherein in a second assembly position of the bearing shaft, the recesses cannot engage with the protrusions, thereby preventing access to this assembly position and ensuring the bearing shaft is fully inserted into the oscillating support. This, for example, allows for the differentiation between balanced and unbalanced guide rollers by selecting the mounting position of the bearing shaft differently for balanced rollers compared to unbalanced guide rollers.

[0030] The present invention also relates to a belt conveyor having a conveyor belt and means for supporting guide rollers according to any one of the foregoing embodiments. The conveyor belt may be elastic. The conveyor belt can be taut in the operating position of the guide rollers and slack in the stopped position using the means according to the invention. Attached Figure Description

[0031] The invention is illustrated in the following description with reference to the accompanying drawings. Herein:

[0032] Figure 1 shows a perspective view of the device according to the invention mounted on a frame of a bracket, wherein the guide rollers are arranged in the operating position.

[0033] Figure 2 shows the area of ​​the device shown in Figure 1 without the first swing arm.

[0034] Figure 3 A view of the device shown in Figure 1 is shown from above.

[0035] Figure 4 This shows a view of the region without the first swing arm along the swing axis of the device shown in Figure 1.

[0036] Figure 4a It shows the source Figure 4 Side view of the slider.

[0037] Figure 4b It shows the source Figure 4 A schematic side view of the area including the support portion.

[0038] Figure 5 The diagram shows a view of the device shown in Figure 1 along the direction of the swing axis, wherein the guide roller swings out from the operating position.

[0039] Figure 6 A locking device according to one embodiment of the device is shown in a cross-sectional view perpendicular to the swing axis.

[0040] Figure 7 A top view shows another embodiment of the device according to the invention mounted on a frame of a bracket, the device having mating portions that encode the guide rollers with a hinged area fixed by the bracket.

[0041] Figure 8 Show along Figure 7 A cross-sectional view of line AA in the diagram.

[0042] Figure 9 shows a perspective view of a prior art device for supporting guide rollers. Detailed Implementation

[0043] Figure 1 shows a perspective view of the device according to the invention mounted on a frame 1 of a support 2 with a conveyor belt, wherein the guide roller 10 is arranged in the operating position. The frame 1 of the support 2 has a first side arm 3 and a second side arm 4, which extend along the direction of movement L of the conveyor belt (not shown). A hinged region fixed to the support 2, having a first region 20 and a second region 21, is constructed on the support 2. The first region 20 is integrally constructed with the first side arm 3, and the second region 21 is integrally constructed with the second side arm 4. A first swing support 22 is arranged on the first region 20. A second swing support 23 is arranged on the second region 21.

[0044] The guide roller 10 is rotatably supported at its axial ends 10a, 10b on two swing arms (first swing arm 30 and second swing arm 31) extending along the direction of motion L about its longitudinal axis 12.

[0045] A swing element, configured as a support shaft 40 and spaced apart from the guide roller 10 along the direction of motion L, is arranged perpendicular to the direction of motion L. The support shaft 40 is connected to a first swing arm and a second swing arm 30, 31. The central axis of the support shaft 40 forms a swing axis 44 for the swinging motion of the first swing arm and the second swing arm 30, 31. A first slider and a second slider 41, 42 are arranged at the axial ends of the support shaft 44. In FIG. 1, the first slider 41 is installed in the first swing support portion 22, and the second slider 42 is installed in the second swing support portion 23. The first slider and the second slider 41, 42 are rotatably supported in the first swing support portion or the second swing support portion 22, 23. This allows the guide roller 10 to swing about the swing axis 44.

[0046] In the embodiment shown in FIG1, the first swing support portion and the second swing support portions 22, 23 are mirror-symmetrical about a central plane extending perpendicular to the swing axis 44. The first swing arm 30 is also constructed mirror-symmetrically with respect to this central plane with respect to the second swing arm 31, and the first slider 41 is constructed mirror-symmetrically with respect to the second slider 42. Therefore, only the first swing support portion 22 and the first slider 41 will be described in the following description.

[0047] Figures 2 and 4 show perspective views of the area of ​​the device shown in Figure 1 without the first swing arm 30 and views along the swing axis 44. Figure 4a It shows the source Figure 4 An enlarged view of the sliding body 41, and Figure 4b The illustration shows the source Figure 4 The supporting surface 24. The shape of the first swing support 22 and the shape of the first slider 41 can be seen particularly clearly in the drawings. The cross-section of the first slider 41, in a section perpendicular to the swing axis 44, is generated by two circular arcs K1, K2 with a common center and the same radius R, and two chords S1, S2 connecting the corresponding nearest ends of the different circular arcs K1, K2 to each other (see also...). Figure 4a ).

[0048] The support surface 24 of the first swing support 22 is constructed in the form of an open arc in a cross section perpendicular to the swing axis 44, and the opening 26 of the support surface presents... The central angle (see Figure 4b The arc-shaped support surface 24 thus has a central angle θ > 180°. The radius r of the arc-shaped support surface 24 corresponds here to the radius R of the arcs K1 and K2. The arcs K1 and K2 each have a central angle α, which is smaller than the central angle presented by the first opening 26. Right now In other words, the support surface 24 surrounds the first sliding body 41 in such a way that the support surface 24 supports the sliding body 41 in a swing position region, which includes the operating position of the guide roller 10, in a rotational yet translationally fixed manner. The first sliding body 41 is thus prevented from being guided through the opening 26 in the swing position region. Consequently, the bearing shaft 40 is fixed to the swing supports 22, 23 in the swing position region and cannot be removed from the swing supports 22, 23.

[0049] Based on arcs K1 and K2, the central angle α is smaller than the central angle of the opening. Under certain conditions, the first sliding body 41 can be translated through the opening 26 in a swing position outside the swing position region of the stop position. In the stop position, the first arc K1 or the second arc K2 of the first sliding body 41 is arranged opposite the first opening 26. In the embodiment shown in Figures 1 to 4, the channel 29 extends from the opening 26 to the free outlet 28. The channel 29 extends from the opening 26 in a direction that is inclined at an acute angle toward the guide roller 10 about the straight line G connecting the longitudinal axis 12 of the guide roller 10 and the swing axis 44 of the support shaft 40. The channel 29 is sized so that the first sliding body 41 can be guided through the channel. The above also applies to the second swing support 23 and the second sliding body 42. That is, in the stop position, the support shaft 40 can be removed through the openings 26 and 27. Thus, the guide roller 10 can be removed from the support 2 with the conveyor.

[0050] In the device according to the invention, the swing arm can be fixed axially. As in Figure 3 As shown, the bearing shaft 40 may therefore have a radius in the contact areas 43a, 43b adjacent to the first slider 41 and / or in the contact areas 43c, 43d adjacent to the second slider 42, which is larger than the radius r of the first support surface and the second support surfaces 24, 25. This prevents the bearing shaft 40 from moving in the direction of the swing axis 44.

[0051] Figure 5 The diagram shows a view of the device shown in Figure 1 along the direction of the swing axis 44, wherein the guide roller 10 swings out from the operating position. Figure 5 The position shown allows for the installation of a conveyor belt (not shown) surrounding the guide roller 10 without having to remove the guide roller 10 from the bracket 2. Similarly, by Figure 5 It is understood that the guide roller 10 swings to the operating position to tighten the conveyor belt.

[0052] Figure 6A cross-sectional view of the device according to the invention, perpendicular to the swing axis 44, is shown. This device has a locking mechanism that secures the operating position of the guide roller 10. (As in...) Figure 6 As shown, the longitudinal axis 12 of the guide roller 10 is located below the swing axis 44 in the direction of gravity Z. When the guide roller 10 is surrounded by the conveyor belt, the conveyor belt applies tension to the guide roller 10, which is parallel to the direction of motion L. This results in torque acting on the guide roller 10. To hold the guide roller 10 in its operating position, a locking device is provided on the device. The locking device has a stop 51 provided on the second swing arm 31 and a mating stop 52 arranged on the hinge area (second area 21) fixed by the bracket. Figure 6 In the locking device shown, the mating stop 52 is constructed as a pin 52 extending in the direction of the longitudinal axis 12. The stop 51 arranged on the second swing arm 31 is constructed as a bolt. The bolt is an adjustable element that can be further screwed into or out of the second swing arm 31. This allows the operating position of the guide roller 10 to be adjusted. The locking device may additionally have a stop provided on the first swing arm 30 and a mating stop provided on the first region 20. The stop can be constructed as a bolt and the mating stop can be constructed as a pin. However, the locking device is not limited to... Figure 6 The embodiment shown is illustrated. Therefore, it is also possible to consider that the mating stop is an adjustable element and the stop is fixed. Alternatively, not only the stop but also the mating stop can be configured as adjustable elements.

[0053] Figure 7 A view of another embodiment of the device according to the invention mounted on the frame of bracket 2. Figure 7 The device shown has all the elements of the device shown in Figures 1 to 6. Figure 7 The device shown additionally includes mating portions 60a, 60b, 61a, 61b that are coded to match the guide roller 10 with the hinged areas 20, 21 fixed by the bracket. Figure 7 In the illustrated embodiment, the support shaft 40 has two concave recesses 60a and 60b as first mating portions, which surround the support shaft 40 in an azimuth angle. Complementing to these recesses, the area of ​​the frame 5 fixed by the bracket has two convex protrusions 61a and 61b as second mating portions. Figure 7 and 8 In the assembly positions shown, the protrusions 61a and 61b mate with the recesses 60a and 60b. (As in...) Figure 7 As can be seen, the recesses 60a and 60b are arranged asymmetrically about the axial center M of the bearing shaft 40. Therefore, recess 60b is farther from the axial center M than recess 60a. Figure 7 and8 It is understood that the bearing shaft 40 can only be fully inserted into the swing support portions 22 and 23 when the recesses 60a and 60b are complementary to the protrusions 61a and 61b. Otherwise, when the bearing shaft 40 is inserted into the first support portion and the second swing support portion 22 and 23 through the first opening and the second opening 26 and 27, the area of ​​the bearing shaft 40 that is different from the recesses 60a and 60b collides with the protrusions 61a and 61b, thereby preventing it from being fully inserted into the first swing support portion and the second swing support portion 22 and 23. The recesses 60a and 60b and the protrusions 61a and 61b thus achieve the error-proof principle.

[0054] List of reference numerals

[0055] 1 box

[0056] 2 brackets

[0057] 3 First side arm

[0058] 4 Second side arm

[0059] 10 guide rollers

[0060] 10a, 10b Axial ends

[0061] 12 Longitudinal axis

[0062] 20 First District

[0063] 21 Second Region

[0064] 22 First swing support

[0065] 23 Second swing support

[0066] 24 First support surface

[0067] 25 Second support surface

[0068] 26 First Opening

[0069] 27 Second opening

[0070] 28 Free Export

[0071] 29 channels

[0072] 30 First swing arm

[0073] 31 Second swing arm

[0074] 40 bearing shaft

[0075] 41 First sliding body

[0076] 42 Second sliding body

[0077] 43a, 43b, 43c, 43d contact areas

[0078] 44. Swing axis

[0079] 50 Locking device

[0080] 51 Stop

[0081] 52 Paired stops

[0082] 60a, 60b Recessed parts

[0083] 61a, 61b Protrusions

[0084] K1 First Arc

[0085] K2 Second Arc

[0086] S1 First string

[0087] S2 Second String

[0088] R is the radius of the first and second arcs K1 and K2.

[0089] L Direction of movement

[0090] G connects the straight lines

[0091] θ is the central angle of arcs K1 and K2.

[0092] The central angle formed by openings φ at 26 and 27.

[0093] α is the central angle of the arcs at 24° and 25° on the supporting surface.

[0094] The radius of the arcs on the first and second support surfaces 24 and 25.

[0095] P arrow

[0096] M is the axial center of the bearing shaft 40.

Claims

1. A device for pivotally supporting a guide roller (10) of a circulating conveyor belt having a longitudinal axis (12) on a hinged area (20, 21) of a belt conveyor fixed by a bracket, the device comprising: a swing arm (30, 31) extending from the guide roller (10) along a direction of movement (L) of the conveyor belt orthogonal to the longitudinal axis (12), the guide roller (10) being rotatably supported on the swing arm about its longitudinal axis (12), and the swing arm having a swing element spaced apart from the guide roller (10) along the direction of movement (L); a swing support (22, 23) arranged on the hinged area (20, 21) for supporting the swing element so that the swing arm (30, 31) swings between an operating position and a stopped position of the guide roller (10) about a swing axis (44) parallel to the longitudinal axis (12) of the guide roller (10). The swing support (22, 23) has a support surface (24, 25) which is constructed in the form of an open arc in a section perpendicular to the swing axis (44), and the opening (26, 27) of the support surface has a central angle of less than 180°. Furthermore, a slider (41, 42) is constructed on the swing element, the slider being rotatably guided by a bracket fixed on the support surface (24, 25) in the swing position region including the operating position, and the slider being able to be guided through the opening (26, 27) in the stop operating position.

2. The apparatus according to claim 1, wherein, A channel (29) for the slider (41, 42) is constructed on the hinge area (20, 21) extending from the opening (26, 27) to the free outlet (28).

3. The apparatus according to claim 2, wherein, The channel (29) extends from the opening (26, 27) in a direction that is inclined at an acute angle toward the guide roller (10) by a straight line (G) connecting the longitudinal axis (12) of the guide roller (10) and the swing axis (44) of the swing element.

4. The apparatus according to any one of the preceding claims, wherein, The swing arms (30, 31) have a first swing arm (30) and a second swing arm (31), which are arranged on both sides of the guide roller (10). The swing element has a first sliding body (41) disposed on the first swing arm (30) and a second sliding body (42) disposed on the second swing arm (31). The swing support (22, 23) has a first swing support (22) receiving the first sliding body (41) and a second swing support (23) receiving the second sliding body (42).

5. The apparatus according to claim 4, wherein, The swing element has a bearing shaft (40) extending between the swing arms (30, 31), the first sliding body (41) and the second sliding body (42) are arranged on the axial end region of the bearing shaft, and the central axis of the bearing shaft forms the swing axis (44).

6. The device according to any one of claims 1-3, wherein it has locking devices (51, 52) for securing the swing arm (30, 31) in the operating position.

7. The apparatus according to claim 6, wherein, The locking device (51, 52) has a stop (51) arranged on the swing arm (30, 31) and a mating stop (52) arranged on the hinge area (20, 21) fixed by the bracket.

8. The apparatus according to claim 7, wherein, The stop (51) and / or the paired stop (52) can be adjusted.

9. The apparatus according to any one of claims 1-3, wherein, The cross-section of the sliding body (41, 42) in a section perpendicular to the swing axis (44) is generated by two circular arcs (K1, K2) with the same radius (R) having a common center and two chords (S1, S2) connecting the respective nearest ends of the different circular arcs (K1, K2) to each other, wherein the central angle (α) of the two circular arcs (K1, K2) is smaller than the central angle presented by the openings (26, 27).

10. The apparatus according to claim 9, wherein, The chords (S1, S2) are parallel to each other and are of the same length.

11. The apparatus according to any one of claims 1-3, wherein, The swing arms (30, 31) are axially fixed.

12. The apparatus according to any one of claims 1-3, wherein, The compatibility of the guide roller (10) with the hinged area (20, 21) fixed by the bracket is encoded by two complementary mating parts (60a, 60b, 61a, 61b), one of which is arranged on the oscillating element and the other is arranged on the hinged area (20, 21) fixed by the bracket, wherein the two mating parts (60a, 60b, 61a, 61b) mate with each other in the assembled position.

13. The apparatus according to claim 12, wherein, One of the mating portions (60a, 60b, 61a, 61b) is constructed as a concave recess (60a, 60b), and the other mating portion is constructed as a convex protrusion (61a, 61b).

14. A belt conveyor having a conveyor belt and means for supporting guide rollers (10) according to any one of the preceding claims.

15. The belt conveyor according to claim 14, wherein, The conveyor belt is elastic.

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