JP2010280467A - Roller supporting tool and conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller supporting tool capable of improving safety. <P>SOLUTION: The roller supporting tool 32 supports a return roller 31 that supports a lower surface of a lower part 13 of a conveyer belt 11. The roller supporting tool 32 includes a support 41 that supports an axial end of a shaft 37 of the return roller 31. A cover 42 covering an outer circumferential surface of an axial end of a roller body 36 of the return roller 31 projects integrally on the support 41. The cover 42 includes a cover plate 44 having an approximately circular surface shape and arranged at a space 43 from the outer circumferential surface of the roller body 36. A hole for discharging foreign matters is formed on a lower portion of the cover plate 44. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a roller support and a transport device that can improve safety.

  Conventionally, for example, a conveyance device described in Patent Document 1 is known.

  This conventional conveying apparatus includes an endless body such as a conveying belt that conveys an object to be conveyed, a roller such as a return roller that supports a lower surface of a lower portion of the endless body, and a roller support such as a return roller hanger that supports the roller. And. The roller support includes a support recess that supports the axial end of the shaft portion of the roller, a bolt insertion hole that communicates with one elongated hole of the frame, and an engagement that is inserted into the other elongated hole of the frame. And a protrusion.

JP2003-285918A (FIG. 3 etc.)

  In recent years, in this type of transfer device, for example, improvement in safety for workers working around the transfer device is required.

  The present invention has been made in view of these points, and an object thereof is to provide a roller support and a transport device that can improve safety.

  The roller support according to claim 1 is a roller support that supports a roller having a rotatable roller main body portion that contacts an endless body and a shaft portion that supports the roller main body portion, and supports the shaft portion. A support and a cover provided on the support and covering at least the outer peripheral surface of the axial end of the roller body.

  The roller support according to claim 2 is the roller support according to claim 1, wherein the cover body has a foreign matter discharge hole for discharging the foreign matter.

  The roller support according to claim 3 is the roller support according to claim 2, wherein the cover body includes a substantially arcuate surface-shaped cover portion that is positioned with a gap between the roller body and the outer peripheral surface of the roller body. And a foreign matter discharge hole is formed in a lower portion of the cover portion.

  The roller support according to claim 4 is the roller support according to any one of claims 1 to 3, wherein the support includes a nut positioning portion for positioning the nut and a bolt insertion hole through which the bolt is inserted. And when the nut is positioned by the nut positioning portion, the bolt insertion hole and the screw hole portion of the nut face each other, and the bolt is inserted into the bolt insertion hole in this state. Then, the support is attached to the attached portion by being screwed with the screw hole portion of the nut.

  A roller support according to a fifth aspect is the roller support according to any one of the first to fourth aspects, wherein the support and the cover are integrally formed of a synthetic resin.

  The transport device according to claim 6 is a roller having an endless body that transports an object to be transported, a rotatable roller main body that is in contact with a lower surface of a lower portion of the endless body, and a shaft that supports the roller main body. And a roller support according to any one of claims 1 to 5, which supports the roller.

  According to a seventh aspect of the present invention, in the conveying device according to the sixth aspect, a pair of roller support members are disposed so as to be opposed to each other and are installed on both roller support members, and the axial direction of the roller main body portion of the roller An intermediate portion cover body that covers the outer peripheral surface of the intermediate portion is provided.

  According to the first aspect of the present invention, the cover body can cover at least the outer peripheral surface of the end portion in the axial direction of the roller main body, so that safety can be improved.

  According to the second aspect of the present invention, since foreign matter can be discharged from the foreign matter discharge hole, foreign matter can be prevented from accumulating in the cover body.

  According to the third aspect of the present invention, the outer peripheral surface of the roller main body of the roller can be appropriately covered with the substantially arcuate surface-shaped cover portion, and from the foreign matter discharge hole formed in the lower portion of the cover portion. Foreign matter can be appropriately discharged, and the cover is positioned with a gap between the roller body and the outer peripheral surface of the roller body, so that the cover does not become a load against the rotation of the roller body.

  According to the fourth aspect of the present invention, since the nut is positioned by the nut positioning portion, the bolt insertion hole and the screw hole portion of the nut face each other. The support can be easily attached to the attached portion by being inserted into the hole and screwed into the screw hole portion of the nut.

  According to the invention which concerns on Claim 5, since the support body and the cover body are integrally formed with the synthetic resin, the noise etc. based on the vibration of a roller can be suppressed, for example.

  According to the invention which concerns on Claim 6, the outer peripheral surface of the axial direction edge part of the rotatable roller main-body part which contacts the lower surface of the lower part of an endless body can be covered with the cover body of a roller support tool. Therefore, safety can be improved.

  According to the invention which concerns on Claim 7, the outer peripheral surface of the axial direction intermediate part of the roller main-body part of a roller can be covered with an intermediate part cover body, and the improvement of a further safety | security can be aimed at.

It is a schematic front view of the conveying apparatus which concerns on one embodiment of this invention. It is a schematic side view of a conveyance apparatus same as the above. It is a partial side view of a conveyance apparatus same as the above. It is a perspective view of the roller support tool of a conveyance apparatus same as the above. It is a top view of a roller support tool same as the above. It is a front view of a roller support tool same as the above. It is one side view of a roller support tool same as the above. It is another side view of a roller support tool same as the above. It is sectional drawing of a roller support tool same as the above and a nut guide part. It is a schematic front view of the conveying apparatus which concerns on other embodiment of this invention. It is a schematic front view of the conveying apparatus which concerns on other embodiment of this invention. It is a principal part disassembled perspective view of a conveyance apparatus same as the above.

  An embodiment of the present invention will be described with reference to the drawings.

  In FIG. 1 to FIG. 3, reference numeral 1 denotes a transport device.

  The transport apparatus 1 includes a longitudinal frame 2 having a longitudinal direction in the front-rear direction, which is a direction along the transport direction A.

  A driving roller 3 is attached to a front end portion which is one end portion in the longitudinal direction of the frame 2, and the roller main body portion 4 of the driving roller 3 is driven to rotate by power from driving means (not shown) such as a motor.

  A driven roller 5 is attached to a rear end portion which is the other end portion in the longitudinal direction of the frame 2, and an endless endless shape which can be turned around the roller main body portion 6 of the driven roller 5 and the roller main body portion 4 of the driving roller 3. A conveyor belt 11 as a body is stretched around. That is, the conveyor belt 11 is stretched over the roller means (the driving roller 3 and the driven roller 5) attached to the frame 2, and the conveyor belt 11 is rotated during the rotation based on the driving rotation of the roller body 4 of the driving roller 3. The transported object W is placed on the transport surface 7 on the upper surface and transported in the horizontal transport direction A.

  The conveyor belt 11 has an upper part 12 that is an outward path part and a lower part 13 that is a return path part, and the upper surface of the upper part 12 forms a conveyor surface 7.

  As shown in FIG. 1, the frame 2 has a pair of left and right side frame portions (attached portions) 16 that are spaced apart and face each other in the front-rear direction, and the upper end portions of these side frame portions 16 are horizontal. The connection plate portion 17 is integrally connected, and the entire lower surface of the upper portion 12 of the conveyor belt 11 is supported by the connection plate portion 17. A concave portion 18 extending in the front-rear direction is formed at the central portion in the left-right direction of the connecting plate portion 17.

  The side frame portion 16 has a nut guide portion 21 having a substantially U-shaped cross section that is elongated in the front-rear direction and opens downward at the lower end portion. As shown in FIG. 9, the nut guide portion 21 has a pair of left and right opposing plate portions 22 that are spaced apart from each other, and the protruding portion 23 is inward, that is, opposed to each other from the lower end portions of these opposing plate portions 22. Projecting integrally toward the plate portion 22 side. An elongated hole-like opening 24 extending in the front-rear direction is located between the inner end portions of the two protruding portions 23, and the left and right protruding portions 23 are spaced apart from each other through the opening 24. That is, the substantially cylindrical nut guide portion 21 formed at the lower end portion of the side frame portion 16 is opened downward by the opening portion 24. Each counter plate portion 22 has a nut guide surface 25 on the inner surface which is the counter surface.

  Further, as shown in FIGS. 1 to 3, the transport device 1 supports, for example, one substantially central portion in the front-rear direction on the lower surface of the lower side portion 13 of the transport belt 11 so that the lower side portion 13 does not loosen downward. And a pair of roller support members 32, for example, a pair of left and right roller support members, which are attached to the side frame portion 16 of the frame 2 by mounting means 33 and support the return roller 31. Yes. The two roller supporters (return roller hangers) 32 are different from each other only in being arranged symmetrically in a state of being opposed to each other, and both have the same shape.

  The return roller 31 has a rotatable roller main body 36 whose outer peripheral surface is formed in a substantially cylindrical surface and whose upper end is in contact with the lower surface of the lower side portion 13 of the conveyor belt 11, and the roller main body 36 rotates. And a shaft portion 37 that is supported horizontally. The axial end portion of the shaft portion 37 protrudes outward from the axial end surface of the roller main body portion 36. Then, one end portion of the shaft portion 37 of the return roller 31 is supported by one roller support tool 32, and the outer peripheral surface of one end side in the axial direction of the roller body portion 36 is covered by the one roller support tool 32, The other end of the shaft portion 37 of the return roller 31 is supported by the other roller support 32, and the other roller support 32 covers the outer peripheral surface of the roller body 36 on the other end in the axial direction. It has been broken.

  The attachment means 33 includes a hex nut 39 that is a nut, and a bolt 40 into which the screw shaft portion 40a is screwed into the screw hole portion 39a of the hex nut 39. The width dimension L of the hexagon nut 39 shown in FIG. 5 is slightly smaller than the distance between the nut guide surfaces 25, and the hexagon nut 39 is positioned between the nut guide surfaces 25 in the nut guide. The rotation is restricted by contact with the surface 25.

  The roller support 32 is integrally formed of, for example, a synthetic resin material. As shown in FIGS. 4 to 9, the roller support 32 is attached to the side frame portion 16 by attachment means 33, and is attached to the shaft portion 37 of the return roller 31. A support body 41 that supports the axial end portion, and an outer peripheral surface of at least the axial end portion of the roller main body 36 of the return roller 31 that is integrally provided on the support body 41 so as to protrude horizontally from the support body 41. And a cover body 42 that covers substantially the entire portion other than the upper end portion that contacts the lower side portion 13. That is, the roller support 32 includes only the support body 41 and the cover body 42, and the support body 41 and the cover body 42 are integrally formed of a synthetic resin such as polyacetal (POM).

  The cover body 42 has a substantially arcuate surface shape that is horizontally positioned along the outer peripheral surface with a predetermined gap 43 between the return roller 31 and the outer peripheral surface of the roller main body 36, and opens upward. It has a cover plate portion 44 which is a cover portion formed in a substantially semicircular arc surface shape. That is, the cover body 42 is configured only by a cover plate portion 44 for preventing entrainment in the shape of a rain gutter, and the cover plate portion 44 is located on a virtual circle centered on the axis of the roller main body 36 in a side view. It has a substantially semi-cylindrical shape with openings on both ends, and has an opening surface 45 on the upper surface. Then, the lower portion, the front portion, and the rear portion of the outer peripheral surface of the axial end portion of the roller main body portion 36 of the return roller 31 are covered with the cover plate portion 44.

  Further, a foreign matter discharge hole 46 for dropping and discharging foreign matter from the inside of the cover plate portion 44 to the outside of the cover plate portion 44 is formed in the bottom portion which is the lower portion of the cover plate portion 44. The foreign matter discharge hole 46 is constituted by a plurality of, for example, two hole portions 46a and 46b formed in a long hole shape along the horizontal direction that is the axial direction of the cover plate portion 44, and both the hole portions 46a and 46b. Are not in communication with each other, and there is a communication preventing portion 47 between the hole portions 46a and 46b.

  The foreign matter is, for example, dust or the like adhering to the surface of the conveyor belt 11, and falls from the surface of the conveyor belt 11 due to contact with the outer peripheral surface of the roller body 36 and enters the cover plate 44. It is.

  The support body 41 has a first plate portion 51 that is a substantially rectangular support plate portion positioned in a vertical shape, and a cover plate portion 44 projects horizontally and integrally on one side surface of the first plate portion 51. Has been. A bearing recess 52 that is a concave support portion that fixedly fits and supports the axial end portion of the shaft portion 37 of the return roller 31 is formed on the upper side in the longitudinal center portion of the first plate portion 51. The bearing concave portion 52 is thicker than the portion of the first plate portion 51 other than the bearing concave portion 52, and is opposite to the one-side reinforcing convex portion 53 and the return roller 31 side protruding toward the return roller 31 side. It has the other side reinforcement convex part 54 which protrudes toward the side. The first plate portion 51 covers the outer portion of the axial end surface of the roller main body portion 36 of the return roller 31.

  A second plate portion 56, which is a substantially rectangular mounting plate portion, is integrally projected in a horizontal manner at the upper end of the other side surface of the first plate portion 51, and the first plate portion 51 and the second plate portion 56 are connected to each other. A rib plate portion 57 that is a substantially triangular reinforcing plate portion is integrally provided therebetween.

  The second plate portion 56 has a plate thickness portion 58 that is thicker than other portions at the center in the short direction, and the upper portion of the plate thickness portion 58 is the opening 24 of the nut guide portion 21 of the side frame portion 16. Inserted. Near the central portion in the longitudinal direction of the upper surface of the plate thickness portion 58, there are a plurality of substantially plate-like, for example, two nut positioning portions, which are inserted into the nut guide portion 21 and contact the hexagon nut 39 to position the hexagon nut 39. A nut abutting portion 59 projects integrally upward.

  In addition, a plurality of, for example, two substantially circular bolt insertion holes 60 through which the screw shaft portions 40a of the bolts 40 are inserted from below are provided at both ends in the longitudinal direction of the plate thickness portion 58 of the second plate portion 56. It is formed in the vicinity of the contact portion 59 so as to penetrate the upper and lower surfaces of the plate thickness portion 58. The bolt insertion hole 60 is formed not at a position between the nut contact portions 59 that are spaced apart from each other but at a position closer to the end of the plate thickness portion 58 than the corresponding nut contact portion 59.

  Then, as shown in FIG. 9, the end of the hexagon nut 39 and the nut abutting portion 59 abut and the hexagon nut 39 is positioned by the nut abutting portion 59, so that the bolt insertion hole 60 The screw hole portion 39a of the hexagon nut 39 communicates with the screw hole portion 39a facing each other in the vertical direction. In this state, the screw shaft portion 40a of the bolt 40 is inserted into the bolt insertion hole 60, and the screw shaft portion 40a and the hexagon nut 39 The second plate portion 56 of the support body 41 is fixedly attached to the lower surface of the side frame portion 16 by being screwed with the screw hole portion 39a. That is, the protruding portion 23 of the nut guide portion 21 and the second plate portion 56 are clamped and fixed between the hexagon nut 39 and the head portion 40b of the bolt 40 by screwing and tightening the bolt 40 to the hexagon nut 39.

  Next, the operation and the like of the transfer device 1 will be described.

  A procedure for attaching the roller support 32 to the attachment position on the lower surface of the side frame portion 16 of the frame 2 by using the bolt 40 and the hexagon nut 39 at the time of assembling the conveying apparatus 1 will be described.

  First, the operator inserts the hexagon nut 39 into the nut guide portion 21 through the end face opening of the nut guide portion 21 of the side frame portion 16, and pushes the inserted hexagon nut 39 with the tip of a tool such as a screwdriver. Then, it is slid on the protruding portion 23 along the nut guide surface 25 to the vicinity of the mounting position.

  Next, the upper surface of the second plate portion 56 of the support body 41 of the roller support 32 is applied to the lower surface of the side frame portion 16, that is, the lower surface of the nut guide portion 21, and the upper portion of the plate thickness portion 58 of the second plate portion 56 is nut-guided. The nut 21 is inserted into the opening 24 of the portion 21 and the nut contact portion 59 is inserted into the nut guide portion 21.

  Then, with the roller support 32 positioned at the mounting position, the hex nut 39 is moved a little within the nut guide portion 21, and the sharp tip of the hex nut 39 is brought into contact with the nut contact portion 59.

  When the hexagonal nut 39 and the nut abutting portion 59 come into contact with each other, the screw hole portion 39a of the hexagonal nut 39 coincides with the bolt insertion hole 60, and the bolt insertion hole 60 and the screw hole portion 39a are vertically aligned with each other. It will be in the opposite state. In other words, the hexagonal nut 39 can be positioned at a desired position simply by bringing the hexagonal nut 39 into contact with the nut abutting portion 59, so that the screw hole portion 39a of the hexagonal nut 39 and the bolt insertion hole 60 can be easily aligned. It is.

  Then, the operator inserts the screw shaft portion 40a of the bolt 40 into the bolt insertion hole 60, and screwes the tip end side of the screw shaft portion 40a and the screw hole portion 39a to each other. The roller support 32 is fixedly attached to the attachment position on the lower surface of the side frame portion 16 by screw tightening.

  Thereafter, the end portion of the shaft portion 37 of the return roller 31 is attached to the bearing concave portion 52 of the support body 41 of both roller support tools 32, and the lower surface of the lower side portion 13 of the conveyor belt 11 by the upper end portion of the outer peripheral surface of the roller body portion 36. The predetermined part of is supported.

  As a result, as shown in FIG. 1, the outer peripheral surfaces of the roller main body 36 on both ends in the axial direction are covered with the cover plate portions 44 of the cover bodies 42 of both roller supporters 32.

  Further, when the object to be conveyed W is conveyed, the conveying belt 11 rotates based on the driving rotation of the driving roller 3, and the object W to be conveyed is conveyed in the conveying direction A on the conveying surface 7 of the rotating conveying belt 11. Is done. At this time, the roller main body portion 36 of the return roller 31 is driven to rotate about the shaft portion 37 by the force received from the conveyor belt 11, but the outer peripheral surfaces of the roller main body portion 36 at both axial ends are the cover plate portions of the cover body 42. Since it is covered with 44, for example, safety is ensured for an operator or the like who works around the transport apparatus 1 when transporting the object W to be transported.

  As described above, according to the transport device 1, the outer periphery of the roller main body portion 36 of the return roller 31 that supports the lower surface of the lower side portion 13 of the transport belt 11 at the cover plate portion 44 of the cover body 42 of the roller support 32. Since the surface can be covered, for example, it is possible to improve safety for an operator or the like who works around the transfer device 1.

  Further, since foreign matter can be appropriately dropped and discharged from the foreign matter discharge hole 46 formed in the lower part of the cover plate portion 44 of the cover body 42, foreign matters such as dust can be prevented from accumulating in the cover plate portion 44.

  Furthermore, since the cover plate portion 44 of the cover body 42 is positioned with a gap 43 between the outer peripheral surface of the roller main body portion 36, the cover plate portion 44 is not in contact with the outer peripheral surface of the roller main body portion 36, The cover plate portion 44 does not become a load with respect to the rotation of the roller body portion 36.

  Further, since the bolt insertion hole 60 and the screw hole portion 39a of the hexagon nut 39 are opposed to each other by the contact between the hexagon nut 39 and the nut contact portion 59 of the support body 41, the bolt 40 is The support body 41 can be easily attached to the attachment position on the lower surface of the side frame portion 16 by being inserted into the bolt insertion hole 60 and screwed into the screw hole portion 39a, thereby improving the assemblability of the transport device 1. be able to.

  Further, since the support body 41 and the cover body 42 are integrally formed of synthetic resin, for example, noise and wear due to vibration of the return roller 31 compared to the case where the return roller 31 is supported by a metal support member. Etc. can be effectively suppressed.

  When the roller support 32 is used in the transport apparatus 1 in FIG. 10 having a smaller width than the transport apparatus 1 in FIG. 1, the cover plate portion 44 is placed at a desired cutting position (for example, the cut mark a shown in FIG. 1). Just cut it off. In the narrow conveying apparatus 1 shown in FIG. 10, the outer peripheral surface of the roller main body 36 is covered with the cover plate portions 44 of both roller supports 32 over the entire length in the axial direction.

  The upper end of the cover plate portion 44 of the cover body 42 is not limited to a configuration in which the upper end of the cover plate portion 44 does not contact the lower surface of the lower side portion 13. A configuration in which substantially the entire circumferential direction of the outer peripheral surface of the roller main body 36 is covered with the cover plate 44 may be employed.

  Furthermore, for example, a configuration in which the cover body 42 can be expanded and contracted along the axial direction of the roller main body 36, a configuration in which the cover body 42 is attached to the support body 41 in an exchangeable manner, or the like may be used.

  Further, for example, the foreign matter discharge holes 46 are configured by a plurality of circular holes arranged at equal intervals, or the foreign matter discharge holes 46 are formed over the entire lower length of the cover plate portion 44. The thing etc. which were comprised by may be sufficient.

  Further, the bolt insertion hole 60 is not limited to the one having only the substantially cylindrical space portion. For example, the bolt insertion hole 60 has the same shape as the screw hole portion 39a of the hexagon nut 39, that is, the substantially cylindrical space portion and this space. In this case, the screw shaft portion 40a of the bolt 40 is screwed into the bolt insertion hole and screwed into the screw hole portion 39a.

  Further, the return roller 31 may be, for example, a roller having a rotatable roller body 36 that contacts the conveyor belt 11 and a shaft 37 that fixedly supports the roller body 36 and rotates with the roller body 36. Good.

  On the other hand, in the wide conveying apparatus 1 shown in FIG. 1 such as the conveying apparatus 1 shown in FIGS. 11 and 12, the intermediate portion in the axial direction of the roller body 36 of the return roller 31 is used as the intermediate cover body. 61, and the outer peripheral surface of the roller main body 36 may be covered over the entire length in the axial direction by the two roller support members 32 and the intermediate cover body 61 installed on both the roller support members 32.

  The intermediate cover body 61 is integrally formed of the same material as the roller support 32, for example, a synthetic resin such as polyacetal (POM). Similar to the cover body 42 of the roller support 32, the intermediate cover body 61 is positioned horizontally along the outer circumferential surface with a predetermined gap 62 between the intermediate roller body 36 and the outer circumferential surface of the roller body 36 of the return roller 31. And a cover plate portion 63 which is a cover portion formed in a substantially arcuate surface shape opening upward, for example, a substantially semicircular arc surface shape. That is, the intermediate cover body 61 is composed only of a cover plate portion 63 for preventing entrainment in the shape of a rain gutter, and this cover plate portion 63 is a virtual circle (cover) centering on the axis of the roller main body 36 in a side view. And a substantially semi-cylindrical shape having openings on both end faces located on a larger circle than a virtual circle corresponding to the body 42, and has an opening 64 on the upper surface.

  The intermediate cover body 61 is fixedly attached to the outer surface side of the cover plate portion 44 of the cover body 42 by means of attachment means, for example, bolts 66 and nuts 67, so that the left and right roller supports that are spaced apart from each other. As a result, the intermediate portion cover body 61 covers the lower portion, the front portion and the rear portion of the outer peripheral surface of the intermediate portion (axial center portion) in the axial direction of the roller main body portion 36.

  Further, in the bottom part, which is the lower part of the cover plate part 63 of the intermediate cover body 61, as in the case of the cover plate part 44, a foreign substance discharge hole for dropping and discharging foreign substances from the cover plate part 63 to the outside of the cover plate part 63. 70 is formed. The foreign matter discharge hole 70 is formed in a long hole shape along the horizontal direction, which is the axial direction of the cover plate portion 63, and is formed with a plurality of hole portions positioned side by side in the axial direction of the cover plate portion 63 at intervals. It is composed of 71.

  Then, for example, the hole 46b of the foreign matter discharge hole 46 of the cover plate portion 44 of the roller support 32 and the hole portion 71 at the end position of the foreign matter discharge hole 70 of the cover plate portion 63 of the intermediate cover body 61 are vertically moved. In this state, the shaft portion 66a of the bolt 66 is inserted into both the hole portions 46b and 71 and screwed into the screw hole portion 67a of the nut 67, whereby the cover plate portion of the intermediate cover body 61 63 is fixedly attached to the outer surface side of the cover plate portion 44. That is, the foreign matter discharge holes 46 and 70 also serve as bolt insertion holes, and the peripheral portions of both the hole portions 46b and 71 are connected to the nut 67 and the head portion 66b of the bolt 66 by screwing and tightening the bolt 66 to the nut 67. It is clamped and fixed by. Since each hole of the foreign matter discharge holes 46 and 70 is a long hole, the position adjustment in the left-right direction (the axial direction of the return roller 31) of the intermediate cover 61 with respect to the roller support 32 is easy. The nut 67 is located in the gap 43 between the outer peripheral surface of the roller main body portion 36 and the inner surface of the cover plate portion 44, and is not in contact with the outer peripheral surface of the roller main body portion 36.

  11 and 12 can cover the outer peripheral surface of the roller body 36 of the return roller 31 over the entire length in the axial direction, thereby further improving safety. Can do.

  For example, in the transport apparatus 1 shown in FIGS. 11 and 12, the foreign matter discharge holes 70 are configured by a plurality of circular holes arranged at equal intervals, or the foreign matter discharge holes 70 are cover plate portions. It may be composed of one long hole formed over the entire length of the lower part of 63.

  Further, the configuration is not limited to the configuration in which the intermediate cover body 61 is attached to the outer surface side of the cover body 42 by the bolt 66 and the nut 67. For example, the cover body 42 is provided with a fitting receiving portion such as a hole and the intermediate cover The body 61 is provided with a fitting portion such as a convex portion to be fitted with the fitting receiving portion, and the intermediate cover body 61 is attached to the outer surface side of the cover body 42 by fitting between the fitting receiving portion and the fitting portion. The structure etc. which are constructed by both the roller support tools 32 may be sufficient.

1 Transport device
11 Endless conveyor belt
13 Lower side
16 Side frame part to be mounted
31 return roller
32 Roller support
36 Roller body
37 Shaft
39 Hexagon nut
39a Screw hole
40 volts
41 Support
42 Cover body
43 gap
44 Cover plate part which is the cover part
46 Foreign matter discharge hole
59 Nut abutting part as nut positioning part
60 Bolt insertion hole
61 Intermediate cover W W

Claims (7)

A roller support for supporting a roller having a rotatable roller main body that contacts an endless body and a shaft that supports the roller main body,
A support for supporting the shaft portion;
A roller support, comprising: a cover provided on the support and covering at least an outer peripheral surface of an end portion in the axial direction of the roller main body. The roller support according to claim 1, wherein the cover body has a foreign matter discharge hole for discharging the foreign matter. The cover body has a substantially arcuate surface-shaped cover portion positioned with a gap between the outer peripheral surface of the roller body portion of the roller,
The roller support according to claim 2, wherein a foreign matter discharge hole is formed in a lower portion of the cover portion. The support is
A nut positioning part for positioning the nut;
A bolt insertion hole through which the bolt is inserted,
When the nut is positioned by the nut positioning portion, the bolt insertion hole and the screw hole portion of the nut face each other, and in this state, the bolt is inserted into the bolt insertion hole and The roller support according to any one of claims 1 to 3, wherein the support body is attached to the attached portion by screwing with a screw hole portion of the nut. The roller support according to any one of claims 1 to 4, wherein the support body and the cover body are integrally formed of a synthetic resin. An endless body that transports the object to be transported;
A roller having a rotatable roller main body that contacts the lower surface of the lower side of the endless body and a shaft that supports the roller main body;
A conveying device comprising: the roller support according to claim 1 that supports the roller. A pair of roller supports are disposed opposite to each other,
The conveying apparatus according to claim 6, further comprising an intermediate cover body that is provided on the roller support members and covers an outer peripheral surface of an intermediate portion in the axial direction of the roller main body of the roller.

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