JP2016117555A - Belt curve conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent breakage of a fan-shaped belt by making the fan-shaped belt travel stably.SOLUTION: A belt curve conveyor device 10 includes: an endless fan-shaped belt 15; a motor-driven head pulley 17; a tail pulley 16 driven in accordance with rotations of the head pulley; a device frame which pivotally supports the head pulley and the tail pulley in an inclined state so that an upper surface of the fan-shaped belt wound around the head pulley and the tail pulley keeps a horizontal plane; a plurality of guide wheel units 20 which are provided on the device frame along the vicinity of an outer peripheral edge part of the fan-shaped belt and pull the fan-shaped belt in a direction from a spreading center of the fan-shaped belt to an outer periphery; and a bed which is supported horizontally relative to the device frame for placing the fan-shaped belt.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a belt curve conveyor device used for changing the conveyance direction of a conveyed product. In particular, the present invention relates to a belt curve conveyor device that is provided to change the conveyance direction of a light and small conveyance object and has a small diameter head and tail pulley for transfer to an upstream / downstream conveyor.

  As a method of transporting a light transported object or a heavy transported object, it is common to transport the transported object using a plurality of belt conveyor devices arranged along the transport path of the transported object. As one of such belt conveyor devices, there is a belt curve conveyor device for changing the conveyance direction of a conveyed product. The belt curve conveyor device is a device in which an endless sector belt is wound around two end pulleys (a head pulley and a tail pulley) pivotally supported by a device frame with an opening angle of 90 degrees, for example. In particular, in order to change the conveyance direction of a light and small conveyed product, the two end pulleys need to have a small diameter for the transfer to the upstream and downstream conveyors. When the fan-shaped belt is driven by driving such a belt curve conveyor device, the peripheral speed on the inner diameter side and the peripheral speed on the outer diameter side are different from each other. In many cases, the tail pulley is driven and a pulley having a short straight outer cylinder, which is externally fitted to the central shaft and arranged in parallel, is rotatably provided.

  Further, in the belt curve conveyor device, the two end pulleys are arranged with a predetermined opening angle such as 90 degrees, for example, and therefore the tension toward the main side of the fan belt, that is, the inner diameter side (inner diameter direction) Tension) is inevitably generated. Therefore, when the belt-shaped conveyor device is driven with a drive device provided in the middle to drive the fan belt, the fan belt is displaced in the inner diameter direction by the tension in the inner diameter direction applied to the fan belt, and the head pulley and tail pulley are both of the fan belt. The endless belt surrounded by the forward side and the return side comes out, and the end pulley and the rear surface of the sector belt are completely slipped.

  In order to solve such a problem, for example, it is devised to provide a plurality of guide wheel units for pulling the sector belt in the direction from the center of the sector belt to the outer periphery at the outer diameter side end portion (outer peripheral edge portion) of the sector belt. (See Patent Document 1). The guide wheel unit includes, for example, a first guide wheel with which the back surface of the outer peripheral edge of the forward belt portion and the return belt portion of the fan belt abuts, and a front side of the outer peripheral edge portion of the forward belt portion of the fan belt. A second guide wheel that comes into contact with the protruding raised portion from the main side of the fan-shaped belt, and a protruding portion that protrudes from the outer peripheral edge of the belt portion on the return side of the fan-shaped belt from the main side of the fan-shaped belt And a third guide wheel.

  In the guide wheel unit described above, in consideration of the fan belt replacement operation, the first guide wheel is fan-shaped while preventing the outer peripheral edge portion of the belt portion on the forward side of the fan belt from falling off with the second guide wheel. From the first position, the first position where the belt is pulled in the outer circumferential direction, and the third guide wheel pulls the fan belt in the outer circumferential direction while preventing the outer peripheral edge of the belt portion on the return side of the fan belt from falling off. Also, it is configured to be slidable between a second position at which the sector belt can be attached and detached.

JP 2014-165375 A

  Here, the first guide wheel is in contact with the holding member when in the first position, and is pivoted to a plate-like member that moves to a position away from the holding member when it slides from the first position to the second position. In the first position, the plate-like member that is in contact with the holding member is fastened to the holding member by the fastening member. However, as described above, naturally the stress in the inner diameter direction that the sector belt tends to shift in the inner diameter direction acts on the forward side and the return side surfaces of the traveling sector belt. Since the second guide wheel that comes into contact with the forward belt, which is particularly tight, shifts to the inner diameter side of the fan-shaped belt on the rear surface of the fan belt, a reaction force directed toward the outside is generated and stopped, so the first guide wheel that bears the stress On the other hand, a stress is exerted in the outer diameter direction opposite to the inner diameter direction. The stress in the outer diameter direction affects the first guide wheel with which the back side and the return side of the sector belt are in contact, and the plate-like member that pivotally supports the first guide wheel. In addition, since the stress in the outer diameter direction changes depending on the presence or absence of the conveyed product, the plate-like member affected by the stress in the outer diameter direction may vibrate and damage the fastening member that fastens the plate-like member to the holding member. There is.

  The present invention provides a belt curve that prevents vibration of a plate-like member that is generated when a fan-shaped belt is run, and prevents damage to a guide wheel unit that is caused by vibration of the plate-like member. An object is to provide a conveyor device.

  In order to solve the above-described problems, the belt curve conveyor device of the present invention is composed of an endless fan-shaped belt having an edge protruding from the surface in a substantially semicircular cross section near the outer periphery as a peripheral edge, and a taper roller. A head pulley driven by a motor and a taper roller having the same angle as the taper angle of the head pulley, and a tail pulley that is driven in accordance with the rotation of the head pulley, and the head pulley and the tail pulley are opened to a predetermined extent. A device frame that pivots in an inclined state so that an upper surface of the sector belt wound around the head pulley and the tail pulley is a horizontal plane at an angle, and the vicinity of the outer peripheral edge of the sector belt. A plurality of fan shapes provided on a device frame and wound around the head pulley and the tail pulley A guide wheel unit that pulls the fan belt in the direction from the main part of the fan belt to the outer periphery by sandwiching the outer peripheral edge of the belt from the front side and the back side, and the main part of the fan belt to the device frame, the fan belt A bed on which the fan-shaped belt is placed and is supported horizontally with respect to the apparatus frame by fixing the outer peripheral side of the apparatus to the apparatus frame using gaps between the guide wheel units. In the curved belt conveyor apparatus, the guide wheel unit is in contact with the back surfaces of the outer peripheral edge portions of the forward and return belt portions of the sector belt wound around the head pulley and the tail pulley, respectively. And a ridge protruding to the front side of the outer peripheral edge of the belt portion on the forward side of the sector belt. A second guide wheel that comes into contact with the main part from the main side of the sector belt, and a protruding part that protrudes from the front side of the outer peripheral edge of the belt part on the return side of the sector belt from the main side of the sector belt And the first guide wheel prevents the outer peripheral edge of the belt portion on the forward side of the sector belt from falling off with the second guide wheel. Pulling the belt in the outer circumferential direction of the sector belt, and preventing the outer peripheral edge of the belt portion on the return side of the sector belt from falling off with the third guide wheel, the sector belt in the outer circumferential direction of the sector belt. The guide belt is movable between a first position where the fan belt is pulled and a second position where the fan belt is detachable from the first position. And a collar unit that is externally fitted to the rotation shaft of the first guide wheel at a position radially outside the sector belt of the first guide wheel in the axial direction of the rotation shaft of the first guide wheel. A first holding that holds the first guide wheel movably between the first position and the second position in a state where the collar fitted on the rotation shaft of the first guide wheel is inserted. A member and a rotation shaft of the first guide wheel on which the collar is externally fitted are pivotally supported, and the first guide wheel is brought into contact with the first holding member when moved to the first position. When the first guide wheel is moved to the first position, the first holding member is locked and the plate member is brought into contact with the first holding member. The locking part to be held in the state, and the locking part It characterized by having a a fastening member for fastening the plate-like member held in a state of being contact with the first holding member in the first holding member I.

  The locking portion is a locking piece provided on the plate-like member on the first guide wheel side of the member main body of the plate-like member and at a predetermined interval with respect to the member main body. Yes, the plate-like member is inserted around a part of the first holding member into a gap generated between the locking piece and the member main body around the rotation axis of the first guide wheel, The locking position at which a part of the first holding member is sandwiched between the locking piece and the member main body, and the first holding by the locking piece and the member main body retracted from the locking position. It is possible to rotate between a retracted position for releasing a part of the member.

  In this case, the fastening member is a bolt that is screwed into a screw hole provided in the first holding member, and when the plate-shaped member is rotated from the retracted position to the locking position, The bolt has a groove portion into which the screw portion of the bolt temporarily fixed in the screw hole provided in the first holding member is inserted, and the bolt rotates the plate-like member from the retracted position to the locking position. Then, the plate-like member can be fastened to the first holding member in response to the screw portion of the bolt being inserted into the groove portion of the plate-like member.

  Further, the collar is two collars having different outer diameters, and the first holding member includes a small arc portion into which an upper end portion of a collar having a small outer diameter enters among the two collars having different outer diameters, It has an inner diameter larger than the inner diameter of the small arc portion, and has an insertion hole having a shape combined with a large arc portion capable of inserting each of the two collars having different outer diameters. The concave portion formed by the two collars having different outer diameters and the plate-like member by bringing the plate-like member into contact with a collar having a small outer diameter among the two collars having different outer diameters, The concave portion is configured such that when the first guide wheel is moved to the first position, a peripheral portion of the small arc portion is inserted so that a part of the first holding member has the outer diameter. Sandwiched between a large collar and the plate-like member .

  In this case, the fastening member is a bolt that is screwed into a screw hole provided in the first holding member, and the plate-like member is temporarily fixed to the screw hole provided in the first holding member. A groove portion into which a screw portion of a bolt is inserted, and the plate-like member is temporarily fixed to a screw hole provided in the first holding member when the first guide wheel is in the first position. The bolt can be rotated between a position where the screw portion of the bolt is inserted into the groove portion and a position where the insertion of the screw portion of the bolt into the groove portion is released, and the bolt is the plate-like member. Is turned, and the screw part of the bolt is inserted into the groove part of the plate-like member, so that the plate-like member can be fastened to the first holding member.

  In addition, the first holding member holds the first guide wheel in a state where the first guide wheel is rotatably supported around a horizontal axis in a portion that rises vertically when a lower end portion is fastened to the apparatus frame, and The second guide wheel is rotatably supported at a portion where the upper end portion of the vertically rising portion is further bent at a predetermined angle to the main side of the sector belt.

  In addition, a second holding member fixed to a portion of the first holding member on the main side of the sector belt of the device frame with the third guide wheel rotatably supported. And the guide wheel unit optimizes the pressing force to the third guide wheel that is pressed by the protruding portion protruding to the front side of the outer peripheral edge of the belt portion on the return side of the sector belt, After the lower end portion of the second holding member is weakly fastened to the device frame at a portion of the device frame that is located on the main side of the belt portion of the sector belt of the first holding member, the fan belt is driven in advance. Then, after the third guide wheel is in a position where it does not bite into the raised portion protruding to the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt, the lower end portion of the second holding member is It is fastened to the location frame.

  The first guide wheel, the second guide wheel, and the third guide wheel are rolling bearings in which a central shaft is fitted to an inner ring and a portion that slides with the sector belt is an outer ring.

  Further, the first guide wheel is at least two or more rolling bearings arranged in parallel with a center shaft fitted to an inner ring and a portion sliding with the fan belt as an outer ring.

  A pressing pulley disposed below the head pulley and pressing the fan belt wound around the head pulley toward the head pulley, the pressing pulley having the same taper angle as the head pulley; The taper roller is formed of an angle, and the length in the rotation axis direction of the tapered outer cylinder is set to be shorter than the length in the rotation axis direction of the taper-shaped outer cylinder of the head pulley. The large-diameter side end is positioned in the vicinity of the outer peripheral edge of the sector belt, and the peripheral surface of the tapered outer cylinder is on the outer periphery of the length from the main belt to the outer peripheral edge of the sector belt wound around the head pulley. The head is disposed in an inclined state so that a near portion is pressed toward the peripheral surface of the tapered outer cylinder of the head pulley. To prevent slippage between the fan-shaped belt rear surface generated during rotation of the over Li.

  According to the present invention, when the first guide wheel is moved to the first position, the first holding member is locked and the plate-like member is held in contact with the first holding member. The main side of the fan-shaped belt is provided by providing the locking portion and a fastening member that fastens the plate-like member held in contact with the first holding member by the locking portion to the first holding member. The position of the plate member with respect to the first holding member in the outer circumferential direction is fixed. Accordingly, even when the stress from the main side to the outer peripheral direction acts on the first guide wheel when the fan-shaped belt is caused to travel, the state where the plate-like member is in contact with the first holding member is still present. Retained. As a result, the vibration of the plate member generated by the stress is prevented, and as a result, the fastening member that fastens the plate member to the holding plate can be prevented from being damaged. In addition, even if the fastening member is not damaged, it is possible to prevent the fastening portion from being bitten and the like, and it is possible to prevent a great deal of labor for removing and attaching the belt, thereby facilitating maintenance work.

It is a top view which shows one Embodiment of a curve belt conveyor apparatus. It is a top view which shows the outline when the fan-shaped belt and cover of a curve belt conveyor apparatus are removed. It is a side view when a curved belt conveyor apparatus is visually recognized from the tail pulley which is a driven side. It is a side view when a curved belt conveyor apparatus is visually recognized from the head pulley which is a drive side. It is a perspective view which shows an example of a structure of a take-up unit. It is a figure which shows the structure of the guide wheel unit shown in 1st Embodiment. It is a figure which decomposes | disassembles and shows the structure of a bracket and guide wheel pair vicinity. (A) is the figure which looked at the state near the holding plate in the fixed position (first position) from the guide wheel pair side, (b) is the state near the holding plate in the fixed position (first position) on the holding plate side. It is the figure seen from. (A) is the figure which looked at the state near the bracket when the holding plate is in the slidable position from the side of the guide wheel, and (b) is the state near the bracket when the holding plate is in the slidable position. It is the figure seen from. It is a figure which shows the structure of the guide wheel unit in an exchange position (2nd position). It is a figure which shows the structure of the guide wheel unit shown in 2nd Embodiment. It is a figure which decomposes | disassembles and shows the structure of a bracket and guide wheel pair vicinity. (A) is a figure which shows the holding | maintenance board in a fixed position (1st position), (b) is a figure which shows when a holding | maintenance board is rotated, (c) is a figure which shows the holding | maintenance board in a slidable position. is there. It is a figure which shows the structure of the guide wheel unit in an exchange position (2nd position).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 5, the curved belt conveyor device 10 has an edge protruding from the surface in a substantially semicircular cross section near the outer periphery of an endless fan belt 15 wound around a tail pulley 16 and a head pulley 17. A certain outer peripheral edge (profile) is supported by a number of guide wheel units 20 and held in a state where the outer peripheral edge of the sector belt 15 is stretched. The curve belt conveyor apparatus 10 shown in the present embodiment is a small curve belt conveyor apparatus that conveys a relatively light conveyance object such as food or cosmetics (conveyance object up to about 10 kg), and is arranged upstream. The conveyance direction of the conveyed product conveyed in the Y direction in FIG. 1 by the belt conveyor device is changed to the −X direction in FIG. 1 rotated 90 degrees counterclockwise.

  The curved belt conveyor device 10 has a structure in which a presser pulley 21, a drive unit 22 and the like are assembled in addition to the above-described fan belt 15, tail pulley 16, head pulley 17, and guide wheel unit 20 on a device frame 14 serving as a base. Become. The holding pulley 21 may or may not be present. Reference numeral 23 denotes a cover that covers the outer peripheral edge portions of the guide wheel unit 20 and the sector belt 15 and prevents the conveyed product from being caught.

  The apparatus frame 14 has cross members 26, 27, 28 fixed radially between two arc-shaped angles 24, 25 that are different in length and curved so that the center is located at the same position. The floor plate 29 having a shape is fixed. Above the device frame 14, a fan-shaped support plate (bed) 31 that supports the back surface of the side plate 30 and the belt portion on the forward side of the fan-shaped belt 15 is provided. The support plate 31 has an inner peripheral end fixed to the side plate 30 and an outer peripheral end supported by support members 34, 35, 36, and 37. As a result, the support plate 31 is held above the floor plate 29 in a state of being spaced a predetermined distance from the floor plate 29. Here, the support members 34, 35, 36, and 37 are respectively fixed at predetermined intervals via a support base (not shown) fixed to the outer peripheral end portion of the floor plate 29. The support members 34, 35, 36, and 37 are disposed between adjacent guide wheel units 20 among the guide wheel units 20 that are disposed at a predetermined angular interval.

  The tail pulley 16 and the head pulley 17 are tapered rollers in which the taper angles of the tapered outer cylinders are set to the same angle. At both ends in the axial direction of the tapered outer cylinder of the tail pulley 16 and the head pulley 17, the end portion having a large diameter is referred to as a large-diameter side end portion, and the end portion having a small diameter is referred to as a small-diameter side end portion. Here, the diameter of the large-diameter side end of the tapered outer cylinder of the tail pulley 16 and the diameter of the small-diameter side end, and the diameter of the large-diameter end of the tapered outer cylinder of the head pulley 17 and the diameter of the small-diameter side end. And each have the same diameter. Further, in the tapered outer cylinders of the tail pulley 16 and the head pulley 17, the diameter of the large-diameter end is set to 21.9 mm, for example, and the diameter of the small-diameter end is set to 6.3 mm, for example. This is a balance with the length of the conveyed product, and may be set to such a diameter that the conveyed product does not greatly shake when connecting the upstream and downstream conveyors.

  The tail pulley 16 and the head pulley 17 have a predetermined opening angle between the rotation shafts of the pulleys, and the large-diameter side ends of the tapered outer cylinders of the pulleys are the outer peripheral ends of the floor plate 29 (in other words, fan-shaped belts). 15 on the outer peripheral edge position) side. When the taper angle of the tapered outer cylinders of the tail pulley 16 and the head pulley 17 is set to 1.76 degrees, for example, the angle formed by the rotation axis of the tail pulley 16 and the rotation axis of the head pulley 17, that is, the opening angle is, for example, It is set to 88.24 degrees.

  The tail pulley 16 is incorporated in the apparatus frame 14 with the rotating shafts positioned outside both ends of the tapered outer cylinder being supported by the spherical bearings 40 and 41, respectively. In the state where the tail pulley 16 is incorporated in the apparatus frame 14, the rotational axis direction of the tail pulley 16 is ½ of the taper angle with respect to the horizontal plane from the small-diameter end to the large-diameter end of the tapered outer cylinder. (For example, 0.88 degree) It hold | maintains in the state inclined downward.

  A spherical bearing 40 that supports a rotating shaft located outside the small-diameter end of the tapered outer cylinder of the tail pulley 16 is held by a take-up unit 42 provided at one end of the side plate 30. Since the spherical bearing 40 is held by the take-up unit 42, the position of the spherical bearing 40 can be adjusted (in other words, the position of the rotating shaft of the tail pulley 16 can be adjusted). In addition, the spherical bearing 41 that supports the rotating shaft located outside the small diameter side end of the tapered outer cylinder of the tail pulley 16 is held by a bracket 43 that is fixed to the outer peripheral end of the floor plate 29 of the apparatus frame 14.

  The head pulley 17 is incorporated in the apparatus frame 14 with the rotation shafts located outside the both ends of the tapered outer cylinder being supported by the spherical bearings 51 and 52, respectively. In the state incorporated in the apparatus frame 14, the head pulley 17 has a rotation axis direction of ½ of the taper angle with respect to the horizontal plane from the small-diameter side end to the large-diameter side end of the tapered outer cylinder. An angle (for example, 0.88 degrees) is held in a downwardly inclined state.

  A spherical bearing 51 that supports a rotation shaft located outside the small-diameter end of the tapered outer cylinder of the head pulley 17 is located outside the small-diameter end of the tapered outer cylinder of the tail pulley 16 of the side plate 30. The spherical bearing 40 that supports the rotating shaft is held by a take-up unit 53 provided at an end opposite to the end to which the spherical bearing 40 is fixed. Since the spherical bearing 51 is held by the take-up unit 53, the position of the spherical bearing 51 can be adjusted (in other words, the position of the rotating shaft of the tail pulley 16 can be adjusted). In addition, the spherical bearing 52 that supports the rotation shaft located outside the small diameter side end of the tapered outer cylinder of the head pulley 17 is held by a bracket 54 that is fixed to the outer peripheral end of the floor plate 29 of the apparatus frame 14. .

  The spherical bearing 40 that supports the rotating shaft located outside the small diameter side end of the tapered outer cylinder of the tail pulley 16 described above is fixed to the take-up unit 42. As shown in FIG. 5, the take-up unit 42 includes an L-shaped bracket 45, a full screw (dimension bolt) 46, and two nuts 47 and 48. A spherical bearing 40 is fixed to one piece 45 a of the bracket 45. The one piece 45a of the bracket 45 is notched at the center portion in the vertical direction, and a part of the spherical bearing 40 is inserted into the notched portion. Further, one end of the entire screw 46 is fixed to the center of the other piece 45b of the bracket 45 in the vertical direction by welding or the like.

  The take-up unit 42 screws the nut 48 in a state where the entire screw 46 screwed with the nut 47 is inserted into the insertion hole 49 a of the support piece 49 provided in the side frame 30, and the nut 47 to the support piece 49 is inserted. , 48 is adjusted to adjust the position of the spherical bearing 40. Reference numeral 50 denotes a support piece that supports the lower surface of the bracket 45.

  A spherical bearing 51 that pivotally supports a small diameter side end portion of the tapered outer cylinder of the head pulley 17 is fixed to the take-up unit 53. The take-up unit 53 is composed of an L-shaped bracket 55, a full screw (dimension bolt) 56, and two nuts 57, 58, similar to the take-up unit 42. Therefore, details of the take-up unit 53 are omitted. The take-up unit 53 screws the nut 58 in a state where all the screws 56 screwed with the nut 57 are inserted into the insertion holes 59a of the support pieces 59 provided in the side frame 30, and the nut 57 to the support pieces 59 is inserted. , 58 is adjusted to adjust the position of the spherical bearing 51. Reference numeral 60 denotes a support piece that supports the lower surface of the bracket 55.

  In the curved belt conveyor device 10 of this embodiment, the end pulley 16 is adjusted by adjusting the position of the spherical bearing fixed to at least one of the take-up unit 42 or the take-up unit 53 described above by tightening two nuts. , 17 can be applied with an optimal tension.

  The guide wheel unit 20 sandwiches the outer peripheral edge of the sector belt 15 wound around the head pulley 17 and the tail pulley 16 from the front side and the back side, and pulls the sector belt 15 in the direction from the center of the sector belt 15 to the outer periphery. When the fan belt 15 is running, the fan belt 15 is prevented from shifting to the main side of the fan belt. A plurality of guide wheel units 20 are provided at the outer peripheral end of the floor plate 29 of the apparatus frame 14 at the same angular interval and along the outer peripheral edge of the sector belt 15. FIG. 2 shows a case where 17 guide wheel units 20 are provided along the outer peripheral edge of the sector belt 15. Hereinafter, the configuration of the guide wheel unit 20 will be described later.

  By arranging a plurality of guide wheel units 20, for example, when a specific guide wheel unit 20 is fixed to the outside in the outer diameter direction of the sector belt 15 with respect to a normal position, the guide wheel unit 20 as a target is arranged. Therefore, an excessive stress is applied as compared with the other guide wheel unit 20. In this embodiment, the guide wheel unit 20 is bent by a bracket 79 (described later) when stress is applied in the required direction from the outer periphery of the sector belt 15, and as a result, the sector belt 15 is also applied to the other guide wheel units 20. Can be distributed and applied. Further, since the stress in the required direction from the outer periphery of the sector belt 15 generated in the sector belt 15 by the presser pulley 21 described later can be reduced, the stress applied to each guide wheel unit 20 can be suppressed. 20 itself and the outer peripheral edge of the sector belt 15 can be prevented from being damaged.

  The pressing pulley 21 presses the fan belt 15 wound around the head pulley 17 against the head pulley 17. The holding pulley 21 is disposed below the head pulley 17 on the outer peripheral edge side of the sector belt 15. The presser pulley 21 is a tapered roller whose diameter decreases from the outer periphery of the sector belt 15 toward the main side. The taper angle of the tapered outer cylinder of the holding pulley 21 is set to the same angle as the taper angle of the tapered outer cylinder of the tail pulley 16 and the head pulley 17. The holding pulley 21 is inclined downward from the end of the tapered outer cylinder toward the end of the larger diameter by a taper angle (for example, 17.6 degrees) with respect to the rotation axis direction of the end pulley 17. Is pivotally supported. That is, the rotating shaft of the presser pulley 21 is held in a state inclined by 24.6 degrees with respect to the horizontal plane. The pressing pulley 21 is fixed to the bracket 67 in a state in which both end portions serving as rotation shafts are supported by the spherical bearings 65 and 66. Note that the diameter of the small-diameter end of the tapered outer cylinder of the holding pulley 21 is set larger than the diameter of the large-diameter end of the tapered outer cylinder of the tail pulley 16 and the head pulley 17. For example, the diameter of the large-diameter side end of the tapered outer cylinder of the holding pulley 21 is set to 29 mm, for example, and the diameter of the small-diameter side end of the tapered outer cylinder is set to 22.9 mm, for example.

  As described above, the diameter of the small diameter end of the tapered outer cylinder of the tail pulley 16 and the head pulley 17 is set to, for example, 6.3 mm, and the diameter of the large diameter end of the tapered outer cylinder is set to, for example, 21.9 mm. . The length of the tapered outer cylinder of the head pulley 17 in the rotation axis direction is set to 510 mm, for example. When such a relatively thin taper roller is used in a curved belt conveyor apparatus, the pulley itself may bend because the rotating shaft has a small diameter.

  Therefore, the length of the taper outer cylinder of the holding pulley 21 in the rotation axis direction is set to the same length as the taper-shaped outer cylinder of the head pulley 17 in the rotation axis direction. It is desirable to press the sector belt 15 against the peripheral surface of the tapered outer cylinder of the head pulley 17 by the surface. However, when a thin taper roller is used, it is difficult in design to hold the holding pulley 21 below the head pulley 17. Therefore, the length of the taper outer cylinder of the holding pulley 21 in the rotation axis direction is set shorter than the length of the taper-shaped outer cylinder of the head pulley 17 in the rotation axis direction. In other words, when the length of the taper-shaped outer cylinder of the head pulley 17 is set to, for example, 510 mm, the length of the taper outer cylinder of the presser pulley 21 is set to, for example, 200 mm. .

  In the present embodiment, a taper roller is used as the pressing pulley 21. For example, in the curved belt conveyor apparatus 10, the circumferential speed of the sector belt 15 differs depending on the position in the width direction. Conventionally, it is common to use a holding pulley composed of straight pulleys in which a plurality of short pulleys are arranged in parallel. However, since the short pulleys are individually brought into contact with the belt surface of the sector belt 15, the belt surface is scraped. A large number of shaving lines are generated to indicate that the fan-shaped belt is damaged. In addition, the curved belt conveyor device 10 of the present embodiment is intended to transport food, cosmetics, and the like as a transported object, and therefore, on the hygiene side, it is impossible to use a pressing pulley that causes the above-described problem. In the present embodiment, a taper roller is used as the pressing pulley 21 to solve the above-described problems and to prevent the fan belt 15 from being damaged.

  Thus, in the curved belt conveyor apparatus 10 illustrated in this embodiment, when the fan belt 15 is caused to travel by the head pulley 17 that is rotated by the drive of the drive unit 22, the fan belt 15 wound around the head pulley 17. Is sent toward the tail pulley 16 while being pressed toward the head pulley 17 by the presser pulley 21 disposed below the head pulley 17. Therefore, it is possible to suppress the stress in the necessary direction from the outer periphery of the sector belt 15 generated in the sector belt 15 wound around the tail pulley 16 and the head pulley 17.

  Next, the position of the holding pulley 21 with respect to the head pulley 17 will be described. In the case of using the pressing pulley 21 whose length in the rotation axis direction is short with respect to the head pulley 17, it is designed that the pressing pulley 21 is arranged so as to be in contact with the central portion in the width direction of the sector belt 15. This is a generally considered method. When the pressing pulley 21 is arranged at a central portion in the width direction of the sector belt 15 or shifted from the center in the width direction to the main side of the sector belt 15, the occurrence of bending of the end pulley 17 can be suppressed. 15, when stress (for example, 4.75 kg) from the outer periphery to the required direction is received only by the plurality of guide wheel units 20, the stress is distributed to each of the guide wheel units 20, but the burden is large. . Therefore, in this embodiment, the holding pulley 21 is disposed at a position where the outer peripheral edge of the sector belt 15 can be pressed against the head pulley 17. Thereby, when the head pulley 17 rotates, generation | occurrence | production of the slip with the fan-shaped belt 15 wound around the head pulley 17 can be suppressed. In addition to this, it is possible to suppress the deflection generated in the head pulley 17 and to suppress the stress load on the guide wheel unit 20 from the outer periphery generated in the sector belt 17 to the required direction.

  The drive unit 22 is assembled to a rotating shaft located outside the large-diameter end of the tapered outer cylinder of the head pulley 17. The drive unit 22 includes a motor (hollow shaft motor) 70 and a speed reducer 71, and a torque arm 72 provided on the drive unit 22 is used for a bracket 73 provided on an outer peripheral end portion of the floor plate 29 of the apparatus frame 14. And fix. Therefore, when the drive unit 22 is driven, the head pulley 17 rotates, and the tail pulley 16 and the fan belt 15 wound around the head pulley 17 travel in the direction A in FIG.

  Hereinafter, the configuration of the guide wheel unit 20 will be described. Hereinafter, when the holding plate is rotated, the bracket is locked by inserting the bracket into the gap between the locking piece provided on the holding plate and the plate body of the holding plate as the first embodiment. explain.

<First Embodiment>
As shown in FIGS. 6 and 7, the guide wheel unit 20 is in contact with the back surface of the outer peripheral edge portion of the forward belt portion of the sector belt 15 and the back surface of the outer peripheral edge portion of the return belt portion. A guide wheel pair 76 that is a first guide wheel, a guide wheel 77 that is a second guide wheel that is in contact with the surface of the outer peripheral edge of the belt portion on the forward side of the sector belt 15, and a return side of the sector belt 15 And a guide wheel 78 that is a third guide wheel that comes into contact with the surface of the outer peripheral edge of the belt portion. The guide wheel pair 76 has two guide wheels 76a and 76b. The two guide wheels 76a and 76b, the guide wheel 77 and the guide wheel 78 constituting the guide wheel pair 76 are, for example, rolling bearings in which a central axis is fitted to an inner ring and a portion sliding with the sector belt 15 is an outer ring. Bearing) is used.

  The bracket 79 as the first holding member is fixed (fastened) at the lower end to the floor plate of the apparatus frame 14. The bracket 79 includes a holding piece 79 a that rises in the vertical direction when the lower end portion is fixed to the device frame 14. The holding piece 79a of the bracket 79 has an insertion hole 79b through which the support bolt 83 that is the rotation shaft of the first guide wheel is inserted. In addition, a screw hole 79c into which a wing bolt 87 as a fastening member is screwed is provided in the holding piece 79a of the bracket 79 below the insertion hole 79b.

  The holding plate 80, which is a plate-like member, has an insertion hole 80b through which the support bolt 83 is inserted in the central portion of the plate body 80a. A locking piece 80c formed by folding a tongue piece extending leftward in FIG. 7 from the plate main body 80a, which is a member main body of the plate-like member, by 180 ° is provided. The gap T1 between the locking piece 80c and the plate body 80a is set to be substantially the same as the thickness T2 of the bracket 79, for example. An insertion groove 80d is provided at the lower end of the plate body 80a. The insertion groove 80d is inserted with the threaded portion 87a of the wing bolt 87 when the holding plate 80 is rotated.

  The guide wheel pair 76 described above is attached to the bracket 79 by the following procedure. The guide wheel pair 76 is attached to the support bolt 83 to which the spacer 81 and the sleeve 82 are externally fitted in the order of the guide wheel 76a and the guide wheel 76b, and then the collar 84 is externally fitted. In this state, the tip of the threaded portion 83 a of the support bolt 83 is inserted in the order of the insertion hole 79 b provided in the holding piece 79 a of the bracket 79 and the insertion hole 80 b of the holding plate 80. And after fitting the spacer 85 to the front-end | tip of the thread part 83a of the support bolt 83, the nut 86 is screwed together. In a state where the nut 86 is screwed into the threaded portion 83 a of the support bolt 83, the guide wheel pair 76 is sandwiched between the spacer 81 and the collar 84, and the holding plate 80 is sandwiched between the collar 84 and the spacer 85. Here, the sleeve 82 may be divided into two and may be a rolling bearing integrated with the guide wheel 76a and the guide wheel 76b. Although the sleeve 82 and the collar 84 are provided separately, a color in which these are integrated may be used.

  The guide wheel pair 76 held by the bracket 79 is held at the operating position which is the first position when the belt curve conveyor device 10 is manufactured. Further, the guide wheel pair 76 is moved from the operating position to the replacement position that is the second position when the sector belt 15 is replaced. Here, the operating position is a position where the plate body 80a of the holding plate 80 fixed to the support bolt 83 is brought into contact with the holding piece 79a of the bracket 78 (see FIG. 6). The replacement position is a position where the plate body 80 a of the holding plate 80 fixed to the support bolt 83 is separated from the bracket 78 by a predetermined amount, and the side surface of the guide wheel 76 b of the guide wheel pair 76 is in contact with the bracket 78. Yes (see FIG. 10).

  As shown in FIGS. 8 and 9, when the guide wheel pair 76 is in the operating position, the holding plate 80 has a part of the bracket 79 entering the gap between the plate main body 80 a and the locking piece 80 c, and the holding plate 80. A position where the threaded portion 87a of the wing bolt 87 is inserted into the insertion groove 80d (hereinafter referred to as a fixed position), a part of the bracket 79 is removed from the gap between the plate body 80a and the locking piece 80c, and the holding plate 80 It is possible to rotate between a position where the threaded portion 87a of the wing bolt 87 is removed from the insertion groove 80d (hereinafter referred to as a slidable position). When the holding plate 80 is in the fixed position, a part of the bracket 79 is inserted into the gap between the plate main body 80a and the locking piece 80c, and the holding plate 80 and the bracket in the direction from the main part of the sector belt 15 toward the outer periphery. The relative position with respect to 79 is kept constant. That is, the state in which the holding plate 80 is in contact with the bracket 79 is held. When the holding plate 80 is in the fixed position, the wing bolt 87 temporarily fixed to the bracket 79 can be tightened.

  On the other hand, when the holding plate 80 is at the fixed position, the holding plate 80 at the fixed position can be rotated to the slidable position by loosening the tightened wing bolt 87. When the holding plate 80 rotates to the slidable position, the guide wheel pair 76 can be slid between the operating position and the exchange position together with the holding plate 80.

  Returning to FIG. 6, the guide wheel 77, which is the second guide wheel, can be freely rotated into an inclined piece 79d in which the upper end portion of the bracket 79 is bent vertically downward and the tip portion bent vertically is bent upward by a predetermined angle. Retained. The guide wheel 77 is held on the inclined piece 79 d of the bracket 79 by the support bolt 90. Reference numeral 91 denotes a sleeve for preventing shaft runout when the guide wheel 77 rotates, and reference numeral 92 denotes a gap formed between the guide wheel 77 and the inclined piece 79d so that the guide wheel 77 is reliably rotated. Color. When the guide wheel 77 is pivotally supported on the inclined piece 79 d of the bracket 79, the edge of the guide wheel 77 is held with a clearance from the surface of the forward belt portion of the sector belt 15. In this state, the guide wheel 77 is brought into contact with the raised portion 97a of the thick edge portion 97 protruding from the front side of the outer peripheral edge portion of the forward belt portion of the sector belt 15 from the main side of the sector belt 15.

A guide wheel 78 that is a third guide wheel is rotatable to a bracket 93 that is a second holding member made of a plate-like member in which a tip end portion bent in an L shape is bent at a predetermined angle to the other piece side. Retained. The guide wheel 78 is held on the inclined piece 93 a of the bracket 93 by the support bolt 94. Reference numeral 95 denotes a sleeve for preventing shaft shake when the guide wheel 78 rotates, and reference numeral 96 denotes a collar for reliably rotating the guide wheel 78 by forming a gap between the guide wheel 78 and the inclined piece 93a. It is. here,
The bracket 93 that holds the guide wheel 78 is fixed to the upper surface of the floor board. When the bracket 93 is fixed to the floor plate 29, the guide wheel 78 is held in a state where the edge of the guide wheel 78 is spaced from the belt surface of the belt portion on the return side of the sector belt 15. In this state, the guide wheel 78 is brought into contact with the raised portion 97 a of the thick edge portion 97 protruding from the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 from the main side of the sector belt 15.

  The guide wheel 78 is provided with a bracket 79 for optimizing the pressing force applied to the guide wheel 78 that is pressed against the raised portion of the thick edge protruding to the front side of the outer peripheral edge of the belt portion on the return side of the sector belt 15. The lower end portion of the bracket 79 is weakly fastened to the device frame at a portion located on the main side of the sector belt 15 of the device frame 14. Then, after the head pulley 17 is rotated and the sector belt is caused to travel, the guide wheel 78 bites into the raised portion 97a of the thick edge portion 97 protruding to the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15. After reaching the position, the lower end of the bracket 79 is fastened and fixed to the floor plate 29 of the apparatus frame 14.

  Hereinafter, the case where the sector belt 15 is wound around the tail pulley 16 and the head pulley 17 will be described. When the sector belt 15 is wound around the tail pulley 16 and the head pulley 17, the guide wheel pair 76 is in the exchange position (see, for example, FIG. 10). That is, the side surface of the guide wheel 76 b of the guide wheel pair 76 is in contact with the bracket 79, and the holding plate 80 is held at a position separated from the bracket 79 by a predetermined amount. At this time, the gap generated between the guide wheel 76a of the guide wheel pair 76 and the guide wheel 77 is a raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. The gap is wider than the thickness of the portion where the is provided. Similarly, the gap formed between the guide wheel 76a of the guide wheel pair 76 and the guide wheel 78 is a raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. The gap is wider than the thickness of the portion where the is provided.

  Therefore, after the sector belt 15 is wound around the tail pulley 16 and the head pulley 17, the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is inserted into a gap generated between the guide wheel pair 76 and the guide wheel 77. . When the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is inserted into a gap formed between the guide wheel pair 76 and the guide wheel 77, the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is inserted into the guide wheel 77. It is in a state of being in contact with the raised portion 97a of the thick edge portion 97 provided on the front side of the fan belt 15 from the main side.

  Similarly, the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is inserted into a gap formed between the guide wheel pair 76 and the guide wheel 78. When the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is inserted into a gap formed between the guide wheel pair 76 and the guide wheel 78, the thickness of the guide wheel 78 provided on the front side of the outer peripheral edge portion of the sector belt 15 is increased. It will be in the state contact | abutted to the protruding part 97a of the edge part 97. FIG.

  The bracket 79 that rotatably holds the guide wheel 78 is pressed against the guide wheel 78 that is pressed by the raised portion 97a of the thick edge 97 that protrudes to the front side of the outer peripheral edge of the belt portion on the return side of the sector belt 15. Since the pressure is not optimized, it is weakly fastened to the floor plate 29 of the apparatus frame 14. After rotating the head pulley 17 and running the sector belt 15, the guide wheel 78 does not bite into the raised portion 97 a of the thick edge portion 97 protruding to the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15. After reaching the position, the lower end of the bracket 79 is fastened and fixed to the floor plate 29 of the apparatus frame 14.

  Next, the holding plate 80 is pressed toward the bracket 79 to move the guide wheel pair 76 from the replacement position to the operating position. At this time, the holding plate 80 is held in a slidable position. After the guide wheel pair 76 is moved from the replacement position to the operating position, the holding plate 80 is rotated from the slidable position toward the fixed position (in the direction B in FIG. 9). Due to the rotation of the holding plate 80, a part of the bracket 79 enters the gap between the plate main body 80a and the locking piece 80c. At the same time, the threaded portion 87a of the wing bolt 87 is inserted into the insertion groove 80d. In this state, the wing bolt 87 temporarily fixed to the bracket 79 is tightened, and the holding plate 80 is fixed at the fixed position.

  In the state in which the guide wheel pair 76 is held at the operating position, the gap generated between the guide wheel pair 76 and the guide wheel 77 is provided with a thick edge 97 in the outer peripheral edge of the sector belt 15, for example. The gap is wider than the thickness of the non-existing portion and narrower than the thickness of the portion where the thick edge 97 of the sector belt 15 is provided. The gap generated between the guide wheel pair 76 and the guide wheel 78 is the same as the gap generated between the guide wheel pair 76 and the guide wheel 77. As a result, when the sector belt 15 is caused to travel, the guide wheel 77 is on the main side of the sector belt 15 on the raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge of the belt portion on the forward side of the sector belt 15. It is possible to maintain the state of contact between the guide wheel pair 76 and the guide wheel pair 76 and the guide wheel 78, and to prevent them from falling off. Similarly, the state where the guide wheel 78 is in contact with the raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 from the main side of the sector belt 15 is maintained. Thus, it is possible to prevent the drop-out from a gap generated between the guide wheel pair 76 and the guide wheel 78.

  Further, when the fan belt 15 wound around the tail pulley 16 and the head pulley 17 is removed, the wing bolt 87 is loosened and the holding plate 80 is rotated from the fixed position toward the slidable position (in the direction A in FIG. 8). When the holding plate 80 is rotated, the insertion groove 80d provided in the holding plate 80 moves away from the screw portion 87a of the wing bolt 87, and the screw portion 87a of the wing bolt 87 is detached from the insertion groove 80d. Further, when the holding plate 80 is rotated, the gap between the plate main body 80 a and the locking piece 80 c of the holding plate 80 moves away from the bracket 79. Accordingly, the state in which the holding piece 79a of the bracket 79 is sandwiched between the plate main body 80a and the locking piece 80c of the holding plate 80 is released (see FIG. 9).

  Next, the guide wheel pair 76 is moved from the operating position to the replacement position. When the guide wheel pair 76 is moved to the replacement position, a protruding portion of the thick edge portion 97 provided on the outer peripheral edge portion of the forward belt portion of the sector belt 15 is provided between the guide wheel pair 76 and the guide wheel 77. A gap wider than the thickness of the portion where 97a is provided is generated. Therefore, the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the fan belt 15 is pushed down and the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the fan belt 15 is pushed down. The contact between the raised portion 97 a of 97 and the peripheral surface of the guide wheel 77 is released. Then, the outer peripheral edge of the forward belt portion of the sector belt 15 is pulled out from the gap formed between the guide wheel pair 76 and the guide wheel 77.

  Further, the gap between the guide wheel pair 76 and the guide wheel 78 is wider than the thickness of the portion where the raised portion 97a of the thick edge portion 97 provided at the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is provided. A gap is created. Accordingly, the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the return belt portion of the sector belt 15 is pushed down, and the thick edge portion provided on the front side of the outer peripheral edge portion of the return belt portion of the sector belt 15 is depressed. The contact between the raised portion 97 a of 97 and the peripheral surface of the guide wheel 78 is released. Then, the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is pulled out from the gap generated between the guide wheel pair 76 and the guide wheel 78. Thereby, the sector belt 15 can be removed.

  Next, the operation of the curved belt conveyor device 10 will be described. In the guide wheel unit 20, the peripheral surface of the guide wheel 77 abuts on the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15, and the forward direction of the sector belt 15. The back side of the outer peripheral edge of the belt portion on the side is pressed against the guide wheels 76 a and 76 b of the guide wheel pair 76. Similarly, in the guide wheel unit 20, the circumferential surface of the guide wheel 78 abuts on the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15, and the sector belt. The back side of the outer peripheral edge of the 15 return side belt portion is pressed against the guide wheels 76 a and 76 b of the guide wheel pair 76.

  The sector belt 15 is pulled by a head pulley 17 that rotates when the curved belt conveyor device 10 is driven. As described above, since the tail pulley 16 and the head pulley 17 are arranged with a predetermined opening angle in the curved belt conveyor device 10, the sector belt 15 generates a stress in the required direction from the outer periphery. Therefore, the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is in a state where the guide wheel 77 is pressed. Similarly, the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is in a state where the guide wheel 78 is pressed.

  On the front side of the belt portion that is the forward side and the return side of the sector belt 15, stress is generated in the required direction from the outer periphery, whereas on the back side of the belt portion that is the forward side and the return side of the sector belt 15. Is not a stress from the outer periphery to the required direction but a stress from the required side to the outer peripheral direction. The guide wheel pair 76 is pressed to the bracket 79 side by the stress from the main side to the outer peripheral direction that occurs on the back side of the belt portion on the forward side and the return side of the sector belt 15.

  As described above, when the holding plate 80 is held at the fixed position, a part of the holding piece 79a of the bracket 79 enters between the plate main body 80a of the holding plate 80 and the locking piece 80c. The holding plate 80 is fastened to the bracket 79 by wing bolts 87. As a result, even when the guide wheel pair 76 is pressed toward the bracket 79 by the sector belt 15, the retaining plate 80 does not vibrate, and the retaining plate 80 relative to the bracket 79 in the direction from the center of the sector belt 15 toward the outer periphery. The relative position is kept constant. That is, the holding plate 80 is held in a state of being in contact with the bracket 79.

  As described above, in the operation of removing the fan belt 15, the operation performed on the guide wheel unit 20 is to loosen the wing bolt 76 screwed into the bracket 79 and then slide the holding plate 80 from the fixed position. There are an operation of rotating the guide wheel 76 to the possible position and an operation of sliding the guide wheel pair 76 from the operating position to the replacement position. Further, in the operation of attaching the fan belt 15, the operations performed on the guide wheel unit 20 include an operation of moving the guide wheel pair 76 from the replacement position to the operating position, and a rotation of the holding plate 80 from the slidable position to the fixed position. After performing the operation to move, it is only necessary to perform the operation of tightening the wing bolt 76 screwed into the bracket 79. Therefore, the operation related to the work of replacing the sector belt 15 can be simplified, and the work efficiency in the operation of replacing the sector belt 15 can be improved.

  In the first embodiment, when the holding plate 80 is rotated, a part of the bracket 79 is inserted into the gap between the locking piece 80 c provided on the holding plate 80 and the plate body 80 a of the holding plate 80. 79 is configured to lock, but the configuration for locking the bracket is not limited to the first embodiment. Hereinafter, the collar that is externally fitted to the support bolt 83 is formed by combining a cylindrical portion having a large outer diameter (large diameter portion) and a cylindrical portion having a small external diameter (small diameter portion), and the collar is externally fitted to the support bolt 83. When the small-diameter portion of the collar is brought into contact with the holding plate, the bracket may be locked by inserting a part of the bracket into a recess formed by the collar and the holding plate. Hereinafter, the case where the said structure is used is demonstrated as 2nd Embodiment.

Second Embodiment
In the configuration of the guide wheel unit in the second embodiment shown below, a collar that is externally fitted to a support bolt that is a rotating shaft of the first guide wheel, a holding plate that is a part of the first holding member, and a bracket The configuration is different from that of the first embodiment. Accordingly, the collar, the holding plate, and the bracket will be described with different reference numerals, and the portions common to the first embodiment will be described with the same reference numerals as those of the first embodiment. Further, since the configurations of the collar, the holding plate, and the bracket are different, the guide wheel unit will be described using reference numeral 20 ′.

  As shown in FIGS. 11 and 12, the guide wheel unit 20 ′ shown in the second embodiment is similar to the guide wheel unit 20 shown in the first embodiment in the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. A pair of guide wheels 76 that are in contact with the back surface of the outer peripheral edge portion of the belt portion on the return side and the return belt portion, and a guide wheel 77 that is in contact with the surface of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. And a guide wheel 78 that comes into contact with the surface of the outer peripheral edge of the belt portion on the return side of the sector belt 15.

  The bracket 100 as the first holding member is fixed (fastened) at the lower end to the floor plate 29 of the apparatus frame 14. The bracket 100 includes a holding piece 100 a that rises in the vertical direction when the lower end portion is fixed to the device frame 14. The holding piece 100a of the bracket 100 has an insertion hole 101 through which the support bolt 79 is inserted. The insertion hole 101 is formed by shifting the center of the arc 101a having a small radius from the center of the arc 101b having a large radius upward by a predetermined amount, out of the two arcs 101a and 101b having different radii on the plane orthogonal to the axial direction. It is a hole having a combined shape. Hereinafter, an arc having a small radius is referred to as a small arc portion 101a, and an arc having a large radius is referred to as a large arc portion 101b. Here, in the insertion hole 101, a part of the upper end side of the small diameter portion 106b of the collar 106 described later is inserted into the small arc portion 101a. Accordingly, the radius of the small arc portion 101 a is set to be substantially the same as the radius of the small diameter portion 106 b of the collar 106. Further, the angle formed by the small arc portion 101a is set to, for example, 120 ° to 180 °. On the other hand, the radius of the large arc portion 101 b is set larger than the radius of the large diameter portion 106 a of the collar 106. In the holding piece 100 a of the bracket 100, a screw hole 102 into which the screw portion 87 a of the wing bolt 87 is screwed is provided below the insertion hole 101.

  The holding plate 105 is a plate-like member obtained by vertically bending the left end portion in the left-right direction in FIG. 12 to the side opposite to the bracket 100 side. The holding plate 105 is provided with an insertion hole 105a through which the support bolt 79 is inserted. In addition, an insertion groove 105 b for inserting the screw portion 87 a of the wing bolt 87 temporarily fixed to the screw hole 102 of the bracket 100 when the holding plate 105 is rotated is provided at the lower portion of the holding plate 105.

  Further, after the guide wheel pair 76 is fitted on the support bolt 83, the collar 106 fitted on the support bolt 83 has the following configuration. The collar 106 includes two cylinders having different outer diameters, a cylinder (hereinafter referred to as a large diameter portion) 106 a having a large outer diameter on the guide wheel pair 76 side, and a cylinder (hereinafter referred to as a small diameter portion) 106 b having a small outer diameter as a holding plate 105. It is the shape arranged on the side. Here, the thickness T3 in the axial direction of the small diameter portion 106b is set wider than the thickness T4 of the bracket 100.

  The guide wheel pair 76 is attached to the bracket 100 by the following procedure. The guide wheel pair 76 is attached to the support bolt 83 to which the spacer 81 and the sleeve 82 are externally fitted in the order of the guide wheel 76a and the guide wheel 76b. Then, the collar 106 is fitted onto the support bolt 83 so that the large diameter portion 106a is on the guide wheel pair 76 side. Thereafter, the tip of the threaded portion 83 a of the support bolt 83 is inserted in the order of the insertion hole 101 provided in the holding piece 100 a of the bracket 100 and the insertion hole 105 a of the holding plate 105. And after fitting the spacer 85 to the front-end | tip of the thread part 83a of the support bolt 83, the nut 86 is screwed together. In a state where the nut 86 is screwed into the threaded portion 83 a of the support bolt 83, the guide wheel pair 76 is sandwiched between the spacer 81 and the collar 106, and the holding plate 105 is sandwiched between the collar 106 and the spacer 85. Here, the sleeve 82 may be divided into two and may be a rolling bearing integrated with the guide wheel 76a and the guide wheel 76b. Here, the sleeve 82 and the collar 106 are provided separately, but they may be an integrated collar.

  As in the first embodiment, the guide wheel pair 76 held by the bracket 100 is held in the operating position when the belt curve conveyor device 10 is manufactured. Further, the guide wheel pair 76 is moved from the operating position to the replacement position when the sector belt 15 is replaced.

  In the collar 106 fitted on the support bolt 83, the large diameter portion 106 a is brought into contact with the side surface of the guide wheel 76 b of the guide wheel pair 76, and the small diameter portion 106 b is brought into contact with the holding plate 105. Therefore, a recess 107 is formed between the holding plate 105 and the large diameter portion 106b of the collar 106 based on the outer diameter difference between the large diameter portion 106a and the small diameter portion 106b of the collar 106 (see FIG. 14).

  11 and 13A, when the guide wheel pair 76 is in the operating position, the upper end portion of the small diameter portion 106a of the collar 106 is inserted into the small arc portion 101a of the insertion hole 101 of the bracket 100. It becomes. As shown in FIG. 14, when the guide wheel pair 76 is in the exchange position, the guide wheel 76 b of the guide wheel pair 76 is in contact with the holding piece 100 a of the bracket 100. Here, as illustrated in FIG. 13C, when the guide wheel pair 76 is moved to the replacement position, the large diameter portion 106 a of the collar 106 is inserted into the large arc portion 101 b of the insertion hole 101 of the bracket 100. It becomes.

  As shown in FIGS. 13A, 13B, and 13C, when the guide wheel pair 76 is in the operating position, the holding plate 105 is a threaded portion of the wing bolt 87 that is screwed into the bracket 100. A position (hereinafter referred to as a fixing position) where 87a is inserted into the insertion groove 105b of the holding plate 105, and a position where the screw portion 87a of the wing bolt 87 screwed to the bracket 100 from the insertion groove 105b of the holding plate 105 is removed (hereinafter referred to as a slide). Possible position). The procedure for moving the holding plate 105 from the fixed position to the slidable position is a two-step procedure.

  First, when the holding plate 105 is in the fixed position, the upper end portion of the small diameter portion 106 b of the collar 106 enters the small arc portion 101 a of the insertion hole 101. In this state, the holding plate 105 is fastened to the bracket 79 by the wing bolt 87. Therefore, after loosening the tightened wing bolt 87, the holding plate 105 is rotated in the D direction. As a result, the insertion groove 105 b of the holding plate 105 moves away from the screw portion 87 a of the wing bolt 87, and the screw portion 87 a of the wing bolt 87 is detached from the inside of the insertion groove 105 b of the holding plate 105.

  When the threaded portion 87a of the wing bolt 87 is removed from the inside of the insertion groove 105b of the holding plate 105, the downward movement of the holding plate 105 is allowed. Therefore, when the holding plate 105 is moved downward, the upper end portion of the small diameter portion 106 b of the collar 106 is disengaged from the small arc portion 101 a of the insertion hole 101. The entire small diameter portion 106 b of the collar 106 moves into the large arc portion 101 b of the insertion hole 101. That is, the position of the holding plate 105 at this time is a slidable position.

  Hereinafter, the case where the sector belt 15 is wound around the tail pulley 16 and the head pulley 17 will be described. When the sector belt 15 is wound around the tail pulley 16 and the head pulley 17, the guide wheel pair 76 is in the exchange position (see FIG. 14). That is, the side surface of the guide wheel 76 b of the guide wheel pair 76 is in contact with the bracket 100, and the holding plate 105 is held at a position separated from the bracket 100 by a predetermined amount. At this time, the gap generated between the guide wheel 76a of the guide wheel pair 76 and the guide wheel 77 is a raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. The gap is wider than the thickness of the portion where the is provided. On the other hand, the gap formed between the guide wheel 76a of the guide wheel pair 76 and the guide wheel 78 is formed by a raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. The gap is narrower than the thickness of the place to be provided.

  Therefore, after the sector belt 15 is wound around the tail pulley 16 and the head pulley 17, the holding plate 105 is moved downward to widen a gap generated between the guide wheel 76 a and the guide wheel 78 of the guide wheel pair 76. Then, the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is inserted into a gap generated between the guide wheel pair 76 and the guide wheel 78. After the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is inserted into the gap formed between the guide wheel pair 76 and the guide wheel 78, the holding plate is moved upward. Thereby, the clearance gap produced between the guide wheel 76a of the guide wheel pair 76 and the guide wheel 78 will be in a narrow state. Accordingly, the guide wheel 78 is in contact with the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the sector belt 15.

  On the other hand, a gap generated between the guide wheel 76a of the guide wheel pair 76 and the guide wheel 77 is formed by a raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. The gap is wider than the thickness of the place to be provided. The outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is inserted into a gap generated between the guide wheel pair 76 and the guide wheel 77. When the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is inserted into a gap formed between the guide wheel pair 76 and the guide wheel 77, the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is inserted into the guide wheel 77. It is in a state of being in contact with the raised portion 97a of the thick edge portion 97 provided on the front side of the fan belt 15 from the main side.

  Next, the holding plate 105 is pressed toward the bracket 100 to move the guide wheel pair 76. With the holding plate 105 in contact with the bracket 100, the holding plate 105 is moved upward. When the holding plate 105 is in contact with the bracket 100, the small arc portion 101 a of the insertion hole 101 of the bracket 100 is located above the recess 107 formed by the collar 106 and the holding plate 105. Therefore, when the holding plate 105 is moved upward, the guide wheel pair 76 is also moved upward, and the peripheral edge portion of the small arc portion 101 a of the insertion hole 101 of the bracket 100 enters the inside of the recess 107. In this state, the holding plate 105 is rotated from the slidable position toward the fixed position (in the direction E in FIG. 13A). By the rotation of the holding plate 105, the threaded portion 87a of the wing bolt 87 enters the insertion groove 105b. In this state, the wing bolt 87 is tightened, and the holding plate 80 is fixed at the fixed position.

  In the state in which the guide wheel pair 76 is held at the operating position, the gap generated between the guide wheel pair 76 and the guide wheel 77 is provided with a thick edge 97 in the outer peripheral edge of the sector belt 15, for example. The gap is wider than the thickness of the non-existing portion and narrower than the thickness of the portion where the thick edge 97 of the sector belt 15 is provided. The gap generated between the guide wheel pair 76 and the guide wheel 78 is the same as the gap generated between the guide wheel pair 76 and the guide wheel 77. As a result, when the sector belt 15 is caused to travel, the guide wheel 77 is formed on the raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15. The state of contact from the side is maintained, and it is possible to prevent falling off from the gap formed between the guide wheel pair 76 and the guide wheel 78. Similarly, the guide wheel 78 is in contact with the raised portion 97a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 from the main side of the sector belt 15. Is maintained, and it is possible to prevent a drop from a gap generated between the guide wheel pair 76 and the guide wheel 78.

  Further, when removing the fan belt 15 wound around the tail pulley 16 and the head pulley 17, the wing bolt 87 is loosened and the holding plate 105 is turned from the fixed position to the slidable position (in the direction D in FIG. 13A). Move. When the holding plate 105 is rotated, the insertion groove 105b of the holding plate 105 moves in a direction away from the screw portion 87a of the wing bolt 87, and the screw portion 87a of the wing bolt 87 is detached from the insertion groove 105b of the holding plate 105. Then, the holding plate 105 is moved downward. Due to the downward movement of the holding plate 105, the small diameter portion of the collar also moves downward, and the small diameter portion 106 b of the collar 106 is disengaged from the small arc portion 101 a of the insertion hole 101 of the bracket 100.

  Finally, the side surface of the guide wheel 76 b of the guide wheel pair 76 is moved until it comes into contact with the holding piece 100 a of the bracket 100. In this state, between the guide wheel pair 76 and the guide wheel 77, the thickness of the portion where the raised portion 97a of the thick edge portion 97 provided at the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is provided. A wide gap occurs. Therefore, the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the fan belt 15 is pushed down and the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the fan belt 15 is pushed down. The contact between the raised portion 97 a of 97 and the peripheral surface of the guide wheel 77 is released. Then, the outer peripheral edge of the forward belt portion of the sector belt 15 is pulled out from the gap formed between the guide wheel pair 76 and the guide wheel 77.

  On the other hand, the gap between the guide wheel pair 76 and the guide wheel 78 is wider than the thickness of the portion where the raised portion 97a of the thick edge portion 97 provided at the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is provided. There is no gap. Therefore, the holding plate 105 is moved downward with the large diameter portion 106b of the collar 106 in contact with the inner peripheral surface of the large arc portion 101b of the insertion hole 101 of the bracket 100, and the guide wheel pair 76 is moved upward. Let Thus, the thickness between the guide wheel pair 76 and the guide wheel 78 is larger than the thickness of the portion where the raised portion 97a of the thick edge portion 97 provided on the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is provided. A wide gap occurs. Therefore, the thick edge 97 provided on the front side of the outer peripheral edge of the belt part on the return side of the sector belt 15 is pushed down, and the thick edge 97 provided on the front side of the outer peripheral part of the belt part on the return side of the sector belt 15 is pushed down. The contact between the raised portion 97 a of 97 and the peripheral surface of the guide wheel 78 is released. Then, the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is pulled out from the gap generated between the guide wheel pair 76 and the guide wheel 78. Thereby, the sector belt 15 can be removed.

  Next, the operation of the curved belt conveyor device 10 will be described. In the guide wheel unit 20, the peripheral surface of the guide wheel 77 abuts on the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15, and the forward direction of the sector belt 15. The back side of the outer peripheral edge of the belt portion on the side is pressed against the guide wheels 76 a and 76 b of the guide wheel pair 76. Similarly, in the guide wheel unit 20, the circumferential surface of the guide wheel 78 abuts on the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15, and the sector belt. The back side of the outer peripheral edge of the 15 return side belt portion is pressed against the guide wheels 76 a and 76 b of the guide wheel pair 76.

  The sector belt 15 is pulled by a head pulley 17 that rotates when the curved belt conveyor device 10 is driven. As described above, since the tail pulley 16 and the head pulley 17 are arranged with a predetermined opening angle in the curved belt conveyor device 10, the sector belt 15 generates a stress in the required direction from the outer periphery. Therefore, the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the forward side of the sector belt 15 is in a state where the guide wheel 77 is pressed. Similarly, the raised portion 97 a of the thick edge portion 97 provided on the front side of the outer peripheral edge portion of the belt portion on the return side of the sector belt 15 is in a state where the guide wheel 78 is pressed.

  On the front side of the belt portion that is the forward side and the return side of the sector belt 15, stress is generated in the required direction from the outer periphery, whereas on the back side of the belt portion that is the forward side and the return side of the sector belt 15. Is not a stress from the outer periphery to the required direction but a stress from the required side to the outer peripheral direction. The guide wheel pair 76 is pressed to the bracket 79 side by the stress from the main side to the outer peripheral direction that occurs on the back side of the belt portion on the forward side and the return side of the sector belt 15.

  As described above, when the guide wheel pair 76 is in the operating position, the upper end portion of the small diameter portion of the collar is inserted into the small arc portion 101 a of the insertion hole 101 of the bracket 100. In this state, the peripheral edge portion of the small arc portion 101 a of the insertion hole 101 of the bracket 100 enters the recess 107 formed by the holding plate 105 and the large diameter portion 106 a of the collar 106. That is, the peripheral edge portion of the small arc portion 101 a of the insertion hole 101 of the bracket 100 is sandwiched between the step portion of the collar 106 and the holding plate 105. The holding plate 105 is fastened to the bracket 100 by wing bolts 87. As a result, even if the guide wheel pair 76 is pressed toward the bracket 100 by the sector belt 15, the retaining plate 105 does not vibrate, and the retaining plate 105 relative to the bracket 100 in the direction from the center of the sector belt 15 toward the outer periphery. The relative position is kept constant.

  Also in the second embodiment, in the operation of removing the sector belt 15, the operation performed on the guide wheel unit 20 is the operation of loosening the wing bolt 76 screwed into the bracket 79, and then the holding plate 80. The guide wheel pair 76 is moved from the operating position to the replacement position. Further, in the operation of attaching the fan belt 15, the operations performed on the guide wheel unit 20 include an operation of moving the guide wheel pair 76 from the replacement position to the operating position, and a rotation of the holding plate 80 from the slidable position to the fixed position. After performing the operation to move, it is only necessary to perform the operation of tightening the wing bolt 76 screwed into the bracket 79. Therefore, similarly to the first embodiment, the operation related to the work of replacing the sector belt 15 can be simplified, and the work efficiency for the operation of replacing the sector belt 15 can be improved.

  In the first and second embodiments, a guide wheel pair 76 in which two guide wheels are arranged in parallel is provided, and an example in which a rolling bearing is used as these guide wheels is taken up. However, when a guide wheel having a wider width than the rolling bearing used as each guide wheel of the guide wheel pair 76 can be used, the guide wheel pair may be used instead of the guide wheel pair.

  DESCRIPTION OF SYMBOLS 10 ... Curve belt conveyor apparatus, 15 ... Fan belt, 16 ... Tail pulley, 17 ... Head pulley, 20 ... Guide wheel unit, 21 ... Holding pulley, 42, 53 ... Take-up unit, 76 ... Guide wheel pair, 77, 78 ... Guide wheel, 79, 100 ... Bracket, 80, 105 ... Holding plate, 83 ... Support bolt, 83c ... Locking piece, 84, 106 ... Collar, 87 ... Wing bolt, 101 ... Insertion hole, 80d, 105b ... Insertion groove, 107 ... concave

Claims (10)

An endless fan-shaped belt provided with an edge protruding from the surface in a substantially semicircular cross section near the outer periphery as an outer peripheral edge,
A head pulley composed of a tapered roller and driven by a motor;
A tail pulley composed of a taper roller having the same angle as the taper angle of the head pulley, and driven by the rotation of the head pulley;
A device frame that pivotally supports the head pulley and the tail pulley in a state in which the upper surface of the fan-shaped belt wound around the head pulley and the tail pulley is inclined with a predetermined opening angle.
A plurality of the apparatus frames are provided in the apparatus frame along the vicinity of the outer peripheral edge of the sector belt, and the sector belt is sandwiched between the outer peripheral edge of the sector belt wound around the head pulley and the tail pulley from the front side and the back side. A guide wheel unit that pulls in the direction from the center of the sector belt to the outer periphery;
The main side of the sector belt is fixed to the apparatus frame, and the outer peripheral side of the sector belt is fixed to the apparatus frame from the gaps of the plurality of guide wheel units by using support members. A bed that is supported to place the fan belt;
Curve belt conveyor device with
The guide wheel unit is
A first guide wheel with which the back surfaces of the outer peripheral edge portions of the forward and return belt portions of the sector belt wound around the head pulley and the tail pulley are in contact with each other;
A second guide wheel that comes into contact with a raised portion protruding from the front side of the outer peripheral edge of the belt portion on the forward side of the sector belt from the main side of the sector belt;
A third guide wheel that comes into contact with a raised portion protruding from the front side of the outer peripheral edge of the belt portion on the return side of the sector belt, from the main side of the sector belt;
Have
The first guide wheel pulls the sector belt toward the outer periphery of the sector belt while preventing the outer peripheral edge of the belt portion on the forward side of the sector belt from falling off with the second guide wheel, and A first position for pulling the sector belt in the outer circumferential direction of the sector belt while preventing the outer peripheral edge of the belt portion on the return side of the sector belt from falling off with the third guide wheel; It is located on the radially outer side of the sector belt and is movable between a second position where the sector belt can be attached and detached,
The guide wheel unit is
A collar that is externally fitted to the rotation shaft of the first guide wheel at a position radially outside the sector belt of the first guide wheel in the axial direction of the rotation shaft of the first guide wheel;
A first holding member that holds the first guide wheel movably between the first position and the second position in a state where the collar fitted around the rotation shaft of the first guide wheel is inserted. When,
A plate-like shape that pivotally supports the rotation shaft of the first guide wheel on which the collar is fitted, and is in contact with the first holding member when the first guide wheel moves to the first position. Members,
Locking that holds the plate-like member in contact with the first holding member by locking the first holding member when the first guide wheel moves to the first position. And
A fastening member that fastens the plate-like member held in contact with the first holding member by the locking portion to the first holding member;
A curved belt conveyor device comprising: The curved belt conveyor apparatus according to claim 1,
The locking portion is a locking piece provided on the plate-like member on the first guide wheel side of the member main body of the plate-like member and at a predetermined interval with respect to the member main body.
The plate-like member is formed by inserting a part of the first holding member into a gap formed between the locking piece and the member main body around the rotation axis of the first guide wheel. A locking position in which a part of the first holding member is sandwiched between the stopper piece and the member main body, and a position of the first holding member by the locking piece and the member main body is retracted from the locking position. A curved belt conveyor device capable of rotating between a retraction position where a part of the jamming is released. In the curved belt conveyor device according to claim 2,
The fastening member is a bolt that is screwed into a screw hole provided in the first holding member,
The plate-like member has a groove portion into which the screw portion of the bolt temporarily fixed to the screw hole provided in the first holding member is inserted when the plate-like member is rotated from the retracted position to the locking position. And
When the plate-like member is rotated from the retracted position to the locking position, the bolt is inserted into the groove of the plate-like member in response to the screw portion of the bolt being inserted into the plate-like member. A curved belt conveyor device characterized in that a member can be fastened to a first holding member. The curved belt conveyor apparatus according to claim 1,
The collars are two colors having different outer diameters,
The first holding member has a small arc portion into which an upper end portion of a collar having a small outer diameter enters the two collars having different outer diameters, and an inner diameter larger than an inner diameter of the small arc portion, and the outer diameter Having an insertion hole with a shape combined with a large arc portion that can be inserted through each of two different collars,
The locking portion is formed by the two collars having different outer diameters and the plate-like member by bringing the plate-like member into contact with a collar having a small outer diameter out of the two collars having different outer diameters. A recess,
The concave portion is configured such that when the first guide wheel is moved to the first position, a peripheral portion of the small arc portion is inserted so that a part of the first holding member has the outer diameter. A curved belt conveyor device characterized by being sandwiched between a large collar and the plate-like member. The curved belt conveyor device according to claim 4,
The fastening member is a bolt that is screwed into a screw hole provided in the first holding member,
The plate-like member has a groove portion into which a screw portion of the bolt temporarily fixed in a screw hole provided in the first holding member is inserted,
The plate-like member has a position for inserting a screw portion of the bolt temporarily fixed to a screw hole provided in the first holding member into the groove portion when the first guide wheel is in the first position. , It is possible to rotate between the position where the screw portion of the bolt is released from the insertion into the groove portion,
The bolt is fastened to the first holding member in response to rotation of the plate member and insertion of a screw portion of the bolt into the groove portion of the plate member. A curved belt conveyor device characterized by that. In the curve belt conveyor device according to any one of claims 1 to 5,
The first holding member holds the first guide wheel in a state in which the first guide wheel is rotatably supported around a horizontal axis at a portion that rises vertically when a lower end portion is fastened to the apparatus frame, and A curved belt conveyor device, wherein the second guide wheel is rotatably supported at a tip end portion obtained by bending the upper end portion of the rising portion a plurality of times. In the curve belt conveyor device according to any one of claims 1 to 6,
In a state where the third guide wheel is rotatably supported, a second holding member is provided that is fixed to a portion of the first holding member of the device frame that is positioned on the main side of the sector belt. And
The guide wheel unit is configured to optimize the pressing force applied to the third guide wheel that is pressed by the protruding portion protruding to the front side of the outer peripheral edge of the belt portion on the return side of the sector belt. After the lower end of the second holding member is weakly fastened to the device frame at a portion of the first holding member located on the main side of the belt portion of the sector belt, the fan belt is driven in advance, The lower end portion of the second holding member is fastened to the device frame after the third guide wheel is in a position where it does not bite into the raised portion protruding to the front side of the outer peripheral edge of the belt portion on the return side of the sector belt. A curved belt conveyor device characterized by being fixed. In the curve belt conveyor device according to any one of claims 1 to 7,
The first guide wheel, the second guide wheel, and the third guide wheel are rolling bearings in which a central shaft is fitted to an inner ring and a portion that slides with the sector belt is an outer ring. Curve belt conveyor device. In the curve belt conveyor device according to any one of claims 1 to 8,
The curve belt characterized in that the first guide wheel is at least two or more rolling bearings arranged in parallel with a center shaft fitted to an inner ring and a portion sliding with the fan belt as an outer ring. Conveyor device. In the curve belt conveyor device according to any one of claims 1 to 9,
A holding pulley that is disposed below the head pulley and presses the fan belt wound around the head pulley toward the head pulley;
The holding pulley has the same angle as the taper angle of the head pulley, and the length of the taper outer cylinder in the rotation axis direction is set shorter than the length of the head pulley in the rotation axis direction of the taper-shaped outer cylinder. Taper roller,
The holding pulley has a large-diameter side end portion of the tapered outer cylinder located in the vicinity of the outer peripheral edge portion of the sector belt, and a peripheral surface of the tapered outer cylinder is wound around the head pulley. Occurs when the head pulley rotates because it is arranged in an inclined state so that a portion close to the outer periphery of the length to the outer peripheral edge is pressed toward the peripheral surface of the tapered outer cylinder of the head pulley. A curved belt conveyor device characterized by preventing slippage with the fan belt back surface.

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