Conveyor skirt structure

Abstract

To provide a conveyor skirt structure which suppresses conveyed objects from getting caught between the conveyor belt and the skirt.SOLUTION: A conveyor skirt structure includes a conveyor belt that is provided between an input roller and a discharge roller, a plurality of supporting rollers that support the conveying side of the conveyor belt from below between the input roller and the discharge roller, and a skirt that is provided on both ends of the conveying surface of the conveyor belt in the width direction, where the skirt has a lower edge that is inclined upward in at least a part of the conveying direction such that the downstream side is higher than the upstream side.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present application relates to a conveyor skirt structure. [Background technology]

[0002] Conventionally, conveyors are used to transport materials such as coal and crushed stone. The conveyor transports the materials on a conveyor belt stretched between a driving roller and a driven roller. The conveyor is provided with skirts along both ends in the width direction so that the materials do not fall off the conveyor belt during transportation. The skirts are supported so as to hang down from the fixed side toward the conveyor belt.

[0003] An example of this type of prior art is a support structure for skirt rubber that adjusts the height position of the skirt rubber relative to the conveyor belt (see, for example, Patent Document 1). In this support structure, the skirt rubber is clamped by friction wheels on base plates provided along both side edges of the surface of the conveyor belt, and the height position of the skirt rubber relative to the conveyor belt is adjusted by rotating the friction wheels. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 3-74511 Summary of the Invention [Problem to be solved by the invention]

[0005] Meanwhile, the conveyor belt is deflected by the weight of the transported object between the support rollers that support the transport side from below. As shown in Fig. 8, when the weight of the transported object acts on the conveyor belt 53 from the state of no transported object shown by the two-dot chain line, the conveyor belt 53 is deflected σ between the support rollers 55, and the deflection σ is the largest in the middle part between the support rollers 55. Due to this deflection σ, the gap S between the conveyor belt 53 and the skirt rubber 60 between the support rollers 55 expands to the gap S+σ during transport, and the transported object 30 may get into the expanded gap S+σ.

[0006] The object 30 caught in the gap S+σ between the conveyor belt 53 and the skirt rubber 60 may become caught in the gap S+x upstream of the support roller 55 because the gap S+σ narrows in a wedge shape toward the support roller 55 in the downstream direction. The object 30 caught in the gap S+x is difficult to remove from the narrowing wedge-shaped gap S+x, and will damage the conveying surface 54 of the conveyor belt 53 for a long time. Moreover, the object 30 caught in the gap S+x must be manually removed by an operator, which requires a lot of time and effort to stop the machine and remove the object.

[0007] In the support structure of the above-mentioned document, the conveyor belt is deflected between the rollers supporting it from below due to the weight of the transported goods, and if the transported goods get between the conveyor belt and the skirt, they may get caught and damage the transport surface of the conveyor belt.

[0008] An object of the present application is to provide a conveyor skirt structure that makes it difficult for conveyed objects to become caught between the conveyor belt and the skirt. [Means for solving the problem]

[0009] A conveyor skirt structure according to one embodiment of the present application comprises a conveyor belt stretched between an input side roller and a discharge side roller, a plurality of support rollers supporting the conveying side of the conveyor belt from below between the input side roller and the discharge side roller, and a skirt provided at both ends of the width direction of the conveying surface of the conveyor belt, wherein in at least a portion of the conveying direction, the lower edge of the skirt is inclined upwardly so that it is higher on the downstream side than on the upstream side. Effect of the Invention

[0010] According to the present application, it is possible to provide a conveyor skirt structure in which conveyed objects are less likely to become caught between the conveyor belt and the skirt. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a side view showing a conveyor with a skirt structure according to one embodiment of the present application. [Diagram 2] FIG. 2 is an enlarged side view of the upstream portion of the conveyor shown in FIG. 1 when an object is being conveyed by the conveyor. [Diagram 3] FIG. 3 is an enlarged side view of a downstream portion of the conveyor shown in FIG. 1 when an object is being conveyed by the conveyor. [Figure 4] FIG. 4 is an explanatory diagram showing a schematic relationship between the conveyor belt and the skirt by enlarging a part of the conveyor shown in FIG. [Diagram 5] FIG. 5 is a cross-sectional view taken along the line VV shown in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. [Figure 8] FIG. 8 is an explanatory diagram showing a schematic relationship between a conveyor belt and a skirt when an object is conveyed by a conventional conveyor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An embodiment of the present application will be described below with reference to the drawings. The following embodiment will be described with reference to a conveyor 50 that dispenses the transported object 30 from a hopper 40. The concepts of upstream and downstream directions in this specification and claims are consistent with the concepts that the right direction in FIG. 1 where the transported object 30 is dispensed is the upstream direction, and the left direction where the transported object 30 is discharged is the downstream direction. In addition, for the conveyor 50, the direction in which the conveyor belt 53 extends is referred to as the transport direction or longitudinal direction, and the direction perpendicular to the longitudinal direction is referred to as the width direction.

[0013] <Conveyor configuration> 1 is a side view showing a conveyor 50 having a skirt structure 1 according to one embodiment. In this embodiment, the conveyor 50 is shown as an example for discharging transported goods 30 such as coal stored in a hopper 40, and the transported goods 30 are discharged by the conveyor 50 in a predetermined amount.

[0014] In the conveyor 50, a conveyor belt 53 is stretched between an input side roller 51 and a discharge side roller 52. The conveyor belt 53 is rotated so that an upper conveying surface 54 moves from the input side roller 51 toward the discharge side roller 52. The conveyor belt 53 is provided with a plurality of support rollers 55 between the input side roller 51 and the discharge side roller 52 in order to support and convey the weight of the conveyed object 30.

[0015] The conveyor belt 53 in this embodiment is located below the hopper 40, and transports the object 30 between a first region L1 that transports the object 30 discharged from the discharge outlet 41 of the hopper 40 in the downstream direction, and a second region L2 that transports the object 30 at a position away from the hopper 40 in the downstream direction. Since the first region L1 is located below the hopper 40, the conveyor belt 53 is subjected to the load of the object 30 in the hopper 40 in addition to the discharged object 30. Since the second region L2 is away from the hopper 40 in the downstream direction, the conveyor belt 53 is subjected to the load of only the object 30 being transported.

[0016] The conveyor 50 has skirts 10 at both ends in the width direction of the conveyor belt 53. The skirts 10 prevent the conveyed object 30 conveyed by the conveyor belt 53 from leaking out in the left and right direction. The discharge port 41 of the hopper 40 is inserted between the skirts 10. The skirt 10 of this embodiment is inclined upward at a predetermined inclination angle θ1 in the first region L1 in the upstream direction located below the hopper 40, and is inclined upward at a predetermined inclination angle θ2 in the second region L2 off the downstream direction from the hopper 40. In this embodiment, the first portion 11 of the first region L1 has a lower edge 13 with an inclination angle θ1 of upward inclination that is higher on the downstream side than on the upstream side, and the second portion 12 of the second region L2 has a lower edge 14 with an inclination angle θ2 of upward inclination that is higher on the downstream side than on the upstream side. The skirt 10 only needs to have the lower edges 13, 14 inclined upward at a higher inclination on the downstream side than on the upstream side in at least a part of the region in the conveying direction. The skirt 10 will be described in detail later.

[0017] <Conveyor belt deflection> FIG. 2 is an enlarged side view of the upstream portion of the conveyor 50 shown in FIG. 1 when the conveyor 50 conveys the object 30. FIG. 3 is an enlarged side view of the downstream portion of the conveyor 50 shown in FIG. 1 when the conveyor 50 conveys the object 30. The two-dot chain lines in FIGS. 2 and 3 indicate the conveyor belt 53 in a state in which the weight of the object is not acting on the conveyor belt 53. As shown in FIG. 2, the conveyor belt 53 generates a large first deflection σ1 between the support rollers 55 in the first region L1 below the hopper 40 under the load of the object 30 stored in the hopper 40. As shown in FIG. 3, the conveyor belt 53 generates a small second deflection σ2 between the support rollers 55 in the second region L2 away from the bottom of the hopper 40 under the load of the object 30 placed on the conveyor belt 53. In the conveyor 50 of this embodiment, the load acting on the conveyor belt 53 changes between the first region L1 and the second region L2, so the deflection acting on the conveyor belt 53 also changes to a first deflection σ1 and a second deflection σ2. Note that although the first deflection σ1 and the second deflection σ2 differ slightly between the multiple support rollers 55, they are shown as the same deflection in these figures.

[0018] When the conveyor belt 53 has a large first deflection σ1 as shown in FIG. 2, the conveyor belt 53 has a large upward inclination at a first deflection angle φ1 from the middle part of the support roller 55 toward the support roller 55 in the downstream direction. When the conveyor belt 53 has a small second deflection σ2 as shown in FIG. 3, the conveyor belt 53 has a small upward inclination at a second deflection angle φ2 from the middle part of the support roller 55 toward the support roller 55 in the downstream direction. Thus, the conveyor belt 53 of this embodiment has a first region L1 with a first deflection angle φ1 and a second region L2 with a second deflection angle φ2 between the support rollers 55 in the conveying direction. The inclination angles θ1 and θ2 of the skirt 10 shown in FIG. 1 correspond to the first deflection angle φ1 and the second deflection angle φ2 of the conveyor belt 53.

[0019] <Conveyor belt deflection angle and bottom edge of skirt> FIG. 4 is an explanatory diagram showing the relationship between the conveyor belt 53 and the skirt 10 by enlarging a part of the conveyor 50 shown in FIG. 2. FIG. 4 shows the positional relationship between the conveyor belt 53, the skirt 10, and the support roller 55 in the first region L1 shown in FIG. 2. The two-dot chain line in FIG. 4 shows the conveyor belt 53 in a state where the weight of the conveyed object is not acting on it. In the conveyor belt 53 of this embodiment, a first deflection angle φ1 occurs due to a first deflection σ1 in the first region L1 below the hopper 40, and a second deflection angle φ2 occurs due to a second deflection σ2 in the second region L2 away from the bottom of the hopper 40. The skirt 10 determines the first inclination angle θ1 corresponding to the first deflection angle φ1 and the second inclination angle θ2 corresponding to the second deflection angle φ2 in both the first region L1 and the second region L2 based on the same concept. For this reason, the following description will be given taking the portion with the first deflection angle φ1 as an example.

[0020] As shown in the figure, the conveyor belt 53 generates a deflection σ1 between the support rollers 55 due to the load of the transported object 30. Due to the deflection σ1, the conveyor belt 53 is inclined downward from the upstream support roller 55 toward the downstream direction, and is inclined upward from the intermediate portion between the support rollers 55 toward the downstream support roller 55. The angle of the upward inclination of the conveyor belt 53 is the first deflection angle φ1. The first deflection angle φ1 can be calculated by tan φ1=σ1÷(P / 2). The first deflection angle φ1 varies depending on the spacing dimension P of the support rollers 55 and the dimension of the first deflection σ1 of the conveyor belt 53.

[0021] The skirt 10 in the first region L1 shown in FIG. 4 has a first lower edge 13 with a first inclination angle θ1 that is the same as the first deflection angle φ1 of the upward inclination of the conveyor belt 53. It is preferable that the first inclination angle θ1 is set to an angle that is the same as the first deflection angle φ1 or exceeds the first deflection angle φ1. In this case, the first inclination angle θ1 can be calculated by tan θ1≧σ1÷(P / 2). If the first inclination angle θ1 of the first lower edge 13 of the skirt 10 is set to an upward inclination angle that is the same as the first deflection angle φ1 of the conveyor belt 53 or exceeds the first deflection angle φ1, the conveyed object 30 will not be caught even if it enters between the conveyor belt 53. Therefore, the conveyed object 30 is conveyed downstream while resting on the conveyor belt 53.

[0022] The skirt 10 is similar in the second region L2, and the second inclination angle θ2 of the second lower edge 14 is preferably set to an angle equal to or greater than the second deflection angle φ2 of the conveyor belt 53. In this manner, the first lower edge 13 and the second lower edge 14 of the skirt 10 have the predetermined first inclination angle θ1 and second inclination angle θ2. This prevents the conveyed object 30 from getting caught between the conveyor belt 53 and the skirt 10 in either the first region L1 or the second region L2. Therefore, the conveyed object 30 can be appropriately conveyed downstream while placed on the conveyor belt 53.

[0023] 1, in the skirt structure 1, in the first region L1 below the hopper 40, the first lower end edge 13 of the skirt 10 has a large first inclination angle θ1 corresponding to the large first deflection angle φ1 of the conveyor belt 53. Therefore, in the first region L1, the first portion 11 of the skirt 10 has an upward inclination away from the conveyor belt 53 in the downstream direction.

[0024] On the other hand, in the second region L2 located downstream away from the hopper 40, the second lower edge 14 of the skirt 10 is at a small second inclination angle θ2 corresponding to the small second deflection angle φ2 of the conveyor belt 53. Therefore, in the second region L2, the second portion 12 of the skirt 10 is inclined upward from the downstream end of the first portion 11 further away from the conveyor belt 53 in the downstream direction.

[0025] Therefore, due to the first inclination angle θ1 in the first region L1 and the second inclination angle θ2 in the second region L2, the lower edges 13, 14 of the skirt 10 move away from the conveying surface 54 of the conveyor belt 53 in the downstream direction. The skirt structure 1 of this embodiment prevents the conveyed object 30 from leaking out from the gap S with the skirt 10 moving away from the conveyor belt 53 in the following manner.

[0026] <Prevention of transported items from falling> Fig. 5 is a cross-sectional view taken along the line VV in Fig. 1. Fig. 6 is a cross-sectional view taken along the line VI-VI in Fig. 1. Fig. 7 is a cross-sectional view taken along the line VII-VII in Fig. 1. The skirt structure 1 of this embodiment is further provided with a rubber guard 20 located outside the skirt 10 in the width direction of the conveyor belt 53 and extending toward the conveying surface 54 of the conveyor belt 53. The rubber guard 20 is provided so as to hang down from the fixed side above the conveyor belt 53 toward the conveying surface 54.

[0027] FIG. 5 is a cross-sectional view showing the skirt 10 and the conveyor belt 53 at an upstream position in the first region L1 located below the hopper 40. In the first region L1, the load of the transported object 30 stored in the hopper 40 also acts on the conveyor belt 53. Therefore, as shown in FIG. 2, the conveyor belt 53 generates a large first deflection σ1 between the support rollers 55, and this first deflection σ1 generates a large first deflection angle φ1. As a result, the first inclination angle θ1 of the first lower edge 13 of the skirt 10 increases corresponding to the first deflection angle φ1, as shown in FIG. 1. However, the gap S between the upstream side of the skirt 10 and the conveying surface 54 of the conveyor belt 53 at the position of the input side roller 51 is small. Therefore, the upstream part of the skirt 10 in the first region L1 is arranged to face vertically to the conveying surface 54 of the conveyor belt 53. Even when the skirt 10 is disposed vertically, the gap S is small, so even if the transported object 30 leaks from the first lower end edge 13 of the skirt 10 at a leakage angle α, the transported object 30 becomes the lower end 21 of the rubber guard 20. R and the width dimension B of the first lower end edge 13 of the skirt 10 S The relationship between the leakage angle and the gap is α and S, respectively. S =B R -2S / tan α".

[0028] 6 is a cross-sectional view showing the skirt 10 and the conveyor belt 53 at a downstream position in the first region L1. Since the first inclination angle θ1 of the skirt 10 is large in the first region L1, the downstream portion of the first lower edge 13 is separated from the conveying surface 54 of the conveyor belt 53, and the gap S is large. Therefore, the width dimension B of the first lower edge 13 of the skirt 10 is S In the downstream portion of the first region L1, the first lower edge 13 is inclined relative to the first upper edge 15 so as to be positioned toward the width direction center C of the conveyor belt 53. R Since is constant, when the gap S becomes large, the width dimension B of the first lower end edge 13 of the skirt 10 becomes S As a result, the upper edge of the skirt 10 is inclined outward in the width direction.

[0029] The skirt 10 has a first lower edge 13 inclined toward the widthwise center C of the conveyor belt 53, so that even if the conveyed object 30 leaks out at a leakage angle α formed by the first lower edge 13 and the lower end 21 of the rubber guard 20, the lower end 21 of the rubber guard 20 becomes the end point of the protrusion. The leakage angle α may be the angle of repose of the conveyed object 30 or an angle close to the angle of repose. This prevents the conveyed object 30 from leaking out in the width direction from the conveying surface 54 of the conveyor belt 53.

[0030] 7 is a cross-sectional view showing the skirt 10 and the conveyor belt 53 in the second region L2 located downstream away from the hopper 40. In the second region L2, only the load of the conveyed object 30 conveyed by the conveyor belt 53 acts on the conveyor belt 53. Therefore, as shown in FIG. 3, the conveyor belt 53 generates a small second deflection σ2 between the support rollers 55, and this second deflection σ2 generates a small second deflection angle φ2. As a result, the second inclination angle θ2 of the second lower edge 14 of the skirt 10 becomes small in response to the second deflection angle φ2, as shown in FIG. 1.

[0031] Since the skirt 10 is continuous between the first portion 11 in the first region L1 and the second portion 12 in the second region L2, the second lower edge 14 in the second region L2 is inclined at a second inclination angle θ2 in the downstream direction from the downstream end of the first lower edge 13 in the first region L1. Therefore, the second lower edge 14 in the second region L2 of the skirt 10 is further away from the conveying surface 54 of the conveyor belt 53 than the first lower edge 13 in the first region L1, and the gap S is larger. For this reason, the width dimension B of the second lower edge 14 of the skirt 10 is S In the second region L2, the second lower edge 14 is inclined toward the width center C of the conveyor belt 53 with respect to the second upper edge 16, further downstream than the first region L1. R Since is constant, when the gap S increases, the width dimension B of the second lower end edge 14 of the skirt 10 S As a result, the upper edge of the skirt 10 is also inclined outward in the width direction in the second region L2.

[0032] By positioning the second lower edge 14 of the skirt 10 toward the widthwise center C of the conveyor belt 53, even if the conveyed object 30 leaks out from the second region L2 at a leakage angle α formed by the second lower edge 14 and the lower end 21 of the rubber guard 20, the lower end 21 of the rubber guard 20 becomes the end point of the protrusion. This prevents the conveyed object 30 from leaking out in the width direction from the conveying surface 54 of the conveyor belt 53.

[0033] In this way, in the above-mentioned skirt structure 1, the lower end edges 13, 14 in the longitudinal direction of the skirt 10 are inclined at angles θ1, θ2 corresponding to the deflection angles φ1, φ2, respectively, of the conveyor belt 53. That is, the lower end edges 13, 14 of the skirt 10 are inclined at angles θ1, θ2 that are parallel to the deflection angle φ of the conveying surface 54 of the conveyor belt 53 from the upstream direction to the downstream direction or that widen toward the downstream direction. This prevents the conveyed object 30 from getting caught in the gap S between the lower end edges 13, 14 of the skirt 10 and the conveying surface 54 of the conveyor belt 53 in the first region L1 and the second region L2.

[0034] In addition, in the above-described skirt structure 1, the lower edges 13, 14 of the skirt 10 are positioned toward the widthwise center C of the conveyor belt 53 relative to the upper edge in the width direction of the conveyor belt 53. This results in the skirt 10 being in a state in which the upper edge is angled outward. In addition, the skirt structure 1 of this embodiment is provided with a rubber guard 20 on the outer side of the skirt 10 in the width direction. The rubber guard 20 is provided so as to hang down from the fixed side toward the conveying surface 54 of the conveyor belt 53.

[0035] In the skirt structure 1, due to the position of the lower edges 13, 14 of the skirt 10 and the rubber guard 20, even if the transported object 30 leaks out in the width direction from the gap S between the skirt 10 and the conveyor belt 53, the lower end portion 21 of the rubber guard 20 becomes the end point of the overflow, and the transported object 30 can be properly transported without dropping off the transport surface 54.

[0036] In addition, the skirt structure 1 may be configured such that the lower end edge 13 of the skirt 10 is positioned toward the widthwise center C in the entire first region L1 below the hopper 40, and the skirt 10 is inclined.

[0037] <Other embodiments> The skirt 10 of the skirt structure 1 of the above-mentioned embodiment has the first region L1 as the first part 11 with a first inclination angle θ1 and the second region L2 as the second part 12 with a second inclination angle θ2, but the region in which the lower edge is inclined upward may be a part of the longitudinal direction of the skirt 10.

[0038] The above-described embodiment shows only one example, and the inclination angle θ of the lower end edges 13, 14 of the skirt 10 may be set according to the deflection σ of the conveyor belt 53. The skirt 10 may have the lower end edges 13, 14 inclined upward so that the downstream side is higher than the upstream side, and the above-described configuration may be changed within a range that does not depart from the gist of the present application, and the present application is not limited to the above-described embodiment.

[0039] Furthermore, the skirt structure 1 is not limited to the skirt structure 1 in the conveyor 50 that discharges the transported object 30 from the hopper 40, but may be the skirt structure 1 of a conveyor 50 for transport between conveyors.

[0040] Each of the following sections is a disclosure of a preferred embodiment. [Item 1] A conveyor skirt structure comprising: a conveyor belt stretched between an input side roller and a discharge side roller; a plurality of support rollers supporting the conveying side of the conveyor belt from below between the input side roller and the discharge side roller; and a skirt provided at both ends of the width direction of the conveying surface of the conveyor belt, wherein the lower edge of the skirt has an upward incline that is higher on the downstream side than on the upstream side in at least a portion of the conveying direction.

[0041] With this configuration, the lower edge of the skirt is inclined upward with the downstream side higher than the upstream side with respect to the conveying surface of the conveyor belt. Therefore, even if an object is caught between the bent conveyor belt and the skirt, the object is not likely to get caught between the conveyor belt and the skirt, and is appropriately conveyed downstream.

[0042] [Item 2] 2. The conveyor skirt structure according to item 1, wherein the lower edge of the skirt is inclined upward at an inclination angle equal to or exceeding the deflection angle of the conveyor belt between the support rollers when the conveyor belt transports an object.

[0043] With this configuration, the lower edge of the skirt is inclined upward at an inclination angle equal to or exceeding the deflection angle of the conveyor belt. Therefore, even if an object enters between the deflected conveyor belt and the skirt, the object can be properly transported downstream without getting caught between the conveyor belt and the skirt.

[0044] [Item 3] 3. The conveyor skirt structure according to item 1 or 2, wherein the lower edge of the skirt is inclined relative to the upper edge so as to be positioned toward the center of the conveyor belt in the width direction of the conveyor belt.

[0045] With this configuration, even if the lower edge of the skirt is separated from the conveying surface of the conveyor belt, the lower edge of the skirt is positioned toward the center of the width of the conveyor belt relative to the upper edge, so that the transported object leaking from the lower edge of the skirt in the width direction of the conveyor belt can be kept on the conveying surface of the conveyor belt.

[0046] [Item 4] 4. The conveyor skirt structure according to item 3, further comprising a rubber guard arranged on the outer side of the conveyor belt in the width direction thereof and hanging down from above the conveyor belt toward the conveying surface.

[0047] With this configuration, even if the transported object leaks out from between the lower edge of the skirt and the transport surface of the conveyor belt, the rubber guard provided on the outer side of the skirt in the width direction of the conveyor belt can prevent the transported object from falling off the transport surface of the conveyor belt.

[0048] [Item 5] 5. The conveyor skirt structure according to item 4, wherein the lower end edge of the skirt is positioned so that the conveyed material leaking from the gap between the lower end edge and the conveyor belt becomes the lower end of the rubber guard.

[0049] With this configuration, even if the transported object leaks out from between the lower edge of the skirt and the conveyor belt's transport surface, the transported object will remain near the lower end of the rubber guard and will be prevented from falling off the conveyor belt's transport surface.

[0050] [Item 6] 6. The conveyor skirt structure according to any one of items 2 to 5, wherein the conveyor belt has a first region and a second region in which the deflection angle between the support rollers is different in the conveying direction, and the skirt has a lower edge with a different upward inclination angle in the first region and the second region.

[0051] With this configuration, even if there are areas with different deflection angles on the conveying surface of the conveyor belt, the skirt has a lower edge with a different upward inclination angle corresponding to the area with different deflection angles of the conveyor belt. Therefore, even if the deflection angle of the conveyor belt is different, the skirt can prevent the conveyed object from getting caught between the conveyor belt and the skirt. [Explanation of symbols]

[0052] 1. Skirt structure 10. Skirt 11 Part 1 12 Part 2 13 First lower edge 14 Second lower edge 20 Rubber guard 21 Lower end 30 Transported goods 50 Conveyor 51 Input roller 52 Discharge side roller 53 Conveyor Belt 54 Transport surface 55 Support roller L1 1st area L2 2nd area σ1 First deflection σ2 Second deflection φ1 First deflection angle φ2 Second deflection angle θ1 1st inclination angle θ2 2nd inclination angle B R Rubber guard installation width B S Skirt bottom width

Claims

1. A conveyor belt is placed between the input roller and the discharge roller; a plurality of support rollers that support a conveying side of the conveyor belt from below between the input side rollers and the discharge side rollers; and skirts provided at both ends of the conveying surface of the conveyor belt in the width direction, A skirt structure of a conveyor, wherein the lower edge of the skirt is inclined upwardly so that the downstream side is higher than the upstream side in at least a portion of the region in the conveying direction.

2. 2. The conveyor skirt structure according to claim 1, wherein the lower edge of the skirt is inclined upward at an inclination angle equal to or exceeding the deflection angle of the conveyor belt between the support rollers when the conveyor belt is transporting an object.

3. 3. The conveyor skirt structure according to claim 1, wherein the lower edge of the skirt is inclined relative to the upper edge so as to be positioned toward the center of the conveyor belt in the width direction of the conveyor belt.

4. 4. The conveyor skirt structure according to claim 3, further comprising a rubber guard disposed on an outer side of the skirt in the width direction of the conveyor belt and hanging down from above the conveyor belt toward the conveying surface.

5. 5. The conveyor skirt structure according to claim 4, wherein the lower end edge of the skirt is positioned so that conveyed goods leaking from a gap between the lower end edge and the conveyor belt become a lower end of the rubber guard.

6. the conveyor belt has a first region and a second region in which the deflection angle between the support rollers is different in the conveying direction, 3. The conveyor skirt structure according to claim 1, wherein the lower edge of the skirt has an upward inclination angle different between the first region and the second region.

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