JP2017186105A - Belt conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform attachment and detachment of a conveyor belt.SOLUTION: A belt conveyor device 10 comprises: a drive pulley which is folded back by a head pulley and a tail pulley 21 and feeds a wound endless belt 25; a first squeeze pulley which is located between the tail pulley and the drive pulley and ensures a winding amount of the endless belt around the drive pulley; a side plate 16 having an insertion part into which a rotary shaft of the first squeeze pulley is inserted from the tail pulley side toward the head pulley side and which supports the rotary shaft of the first squeeze pulley; a first take-up device 26 for applying tension by pressing the rotary shaft of the first squeeze pulley toward the head pulley side when it is mounted to the side plate; and a locking member which can attach and detach the first take-up device to and from the side plate by locking or unlocking between the first take-up device mounted to the side plate and the locking member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a belt conveyor device that can easily attach and detach a conveyor belt that conveys a conveyed product and can secure a driving force.

  As an apparatus for transporting a transported object, a belt conveyor apparatus is provided that transports the transported object by placing the transported object on a transport belt and driving the transport belt. For example, in the case of a belt conveyor apparatus having a relatively long length (machine length) in the conveyance direction of the conveyed product, it is common to run the conveyance belt by an intermediate drive system in which a drive pulley is disposed at a substantially central portion in the conveyance direction of the conveyed product. It is. In the belt conveyor device of the intermediate drive system, the return side of the endless belt wound around the head pulley and the tail pulley and folded downward is folded back by two snubbing pulleys so that a small loop with the upper part opened downward is formed. The return belt back of a small loop with the top open is wrapped around the drive pulley. Further, endlessly wound around the drive pulley by being energized so as to approach each other so as to draw down the upper opening of the small loop by a snub pulley located between the head pulley and the drive pulley and between the tail pulley and the drive pulley, respectively. The amount of belt is secured. Furthermore, by providing a take-up device for one of the snubbing pulleys provided between the tail pulley and the drive pulley, a constant tension is applied to the conveying belt by pressing the other snubbing pulley with a large amount of displacement. .

  By the way, in a belt conveyor device used in a food production line, a pharmaceutical production line, a cosmetic production line, etc., the processing is often performed or arranged on the conveyance surface of the conveyance belt. In addition, in the cleaning validation in the drug substance manufacturing by GMP, since the transport process is also a management point, sanitary properties are required for the transport belt and the bed on which the transport belt slides. Therefore, in belt conveyor devices used in food production lines, pharmaceutical production lines, cosmetics production lines, etc., the conveyor belt is removed from the main body of the apparatus, in addition to food residue adhering to the conveyor surface of the conveyor belt, food oil, There are frequent operations such as cleaning dressings and sauces, or powders or gel liquids of pharmaceuticals and cosmetics, cleaning the bed surface with the conveyor belt removed, and attaching the cleaned conveyor belt to the main unit. It has been broken.

  However, even in the conventional belt conveyor apparatus that considers belt detachment for cleaning, when removing the transport belt from the apparatus main body, first, the restriction inserted through the guide groove provided in the side plate or holding plate of the intermediate drive unit of the belt conveyor apparatus. After loosening the take-up bolt that presses the rotating shaft of the pulley (snave pulley) toward the drive pulley, it was necessary to remove the throttle pulley. For this reason, when the cleaned transport belt is attached to the belt conveyor device, it is necessary to reset the tightening amount of the take-up bolt, and much time and effort are required before and after the cleaning.

  In addition, in a belt conveyor apparatus that employs another intermediate drive system, the return side of the conveyor belt is provided on the side that is pushed out by the drive pulley, in order to easily attach and remove the conveyor belt. A rod end bearing is provided on one side of the rotating shaft of the snubbing pulley so that the pulley shaft can swing, and a hook is provided on the other side of the rotating shaft of the snubbing pulley so that one side of the rotating shaft of the snubbing pulley is connected to the belt conveyor. After once supporting the rotating shaft to swing around the opening-shaped mounting material provided on the side plate of the device, the other side support of the snubb pulley is supported by a long guide groove provided on the side plate or holding plate of the belt conveyor device. After the insertion, the above-mentioned hook is applied by a catch clip (patton lock) provided on the side plate or holding plate of the belt conveyor device. Engaging the click, it is proposed to retain attract the rotation axis of Sunabupuri the horizontal direction of the conveyor belt (refer to Patent Document 1, Patent Document 2).

Japanese Patent No. 4371831 Japanese Patent No. 4219117

  However, the intermediate drive system used for the belt conveyor device is advantageous from the degree of tension and sagging on the return side in the case of a belt conveyor device with a relatively long machine length, but when used for a belt conveyor apparatus with a relatively short machine length. In addition to the head-and-tail pulley, it is necessary to provide snubbing pulleys on both sides of the drive pulley, which leads to an increase in the cost of the belt conveyor device due to the large number of parts. Therefore, in a belt conveyor apparatus having a relatively short length, a head-driven belt conveyor apparatus using a head pulley as a drive pulley is often used. In the case of the head conveyor belt conveyor device, the conveyor belt is wound around the head pulley and folded, so that the configuration of the snubber roller used in the intermediate drive system is not used, and the number of components can be reduced. However, if the pulley diameter is increased for entry and transfer, the transported object will be shaken, dropped or pinched up and down, so it is necessary to reduce the pulley diameter, but this will transmit the driving force to the conveyor belt. There is a fundamental problem that the amount of wrapping is insufficient, and the tail pulley side requires a take-up roller configuration that applies tension to the conveyor belt. It does not eliminate the time and effort required for installation and removal.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a belt conveyor device that can easily attach and remove a conveyor belt and can secure a driving force.

  In order to solve the above-described problems, the belt conveyor device of the present invention is such that the back surface of the endless belt folded by the head pulley and the tail pulley is wound, and the return portion of the wound endless belt is wound on the tail pulley. A drive pulley that feeds out, and a return portion surface of the endless belt positioned between the tail pulley and the drive pulley is wound around to secure a winding amount of the endless belt wound around the drive pulley. A throttle plate, and a side plate having an insertion portion for supporting the rotary shaft of the inserted first throttle pulley while the rotary shaft of the first throttle pulley is inserted from the tail pulley side toward the head pulley side And the rotation shaft of the first aperture pulley supported inside the insertion portion when mounted on the side plate. A first take-up device that applies tension to the endless belt by the first throttle pulley by pressing toward the pulley side, and the first take-up device mounted on the side plate A locking member that makes the first take-up device detachable from the side plate by locking or releasing the locking in between.

  The first take-up device includes: a hook member that is locked to the locking member when the first take-up device is attached to the side plate; and the first take-up device that is connected to the side plate. A pressing member that presses the rotation shaft of the aperture pulley supported inside the insertion portion from the tail pulley side when mounted on the insertion portion, and a first holding piece that holds the relative position of the pressing member in an adjustable manner. A second holding piece provided perpendicular to the first holding piece and to which the flange member is fixed, and when the first take-up device is mounted on the side plate The second holding piece has a bracket abutted on the side plate from the side where the pulley portion of the throttle pulley is located.

  A guide portion that is provided on the side plate and guides the first take-up device attached to the side plate from the tail pulley side toward the head pulley side; the hook member; and the second of the bracket. And an inserted portion to be inserted into the guide portion.

  In addition, the side plate is supported by a first side plate on which one end portion in the axial direction of the rotation shaft of the first throttle pulley is supported, and on the other end portion in the axial direction of the rotation shaft of the first throttle pulley. The first take-up device is detachable from at least one of the first side plate and the second side plate.

  In this case, when the first take-up device is detachable from either the first side plate or the second side plate, the first take-up device is provided on the other side plate, and the rotation of the first throttle pulley is provided. An insertion portion through which the shaft is inserted; and a second take-up device that is fixed to the other side plate and presses the rotation shaft of the first aperture pulley inserted into the insertion portion toward the head pulley side. It is characterized by providing.

  In addition, among the return portions of the endless belt wound around the drive pulley, a return portion located between the head pulley and the drive pulley is wound, so that the endless belt wound around the drive pulley A second throttle pulley that secures the amount of winding is further provided.

  According to the present invention, it is possible to reduce the number of components and easily attach and remove the conveyor belt.

It is a perspective view which shows a structure when the belt conveyor apparatus of this invention is visually recognized from the drive motor side. It is a perspective view which shows a structure when the belt conveyor apparatus shown in FIG. 1 is visually recognized from the opposite side to the drive motor side. It is a top view of the belt conveyor apparatus which removed the endless belt. It is a perspective view which shows the state of the endless belt wound around the pulley used for a belt conveyor apparatus, and a pulley. It is a perspective view which decomposes | disassembles and shows the structure of the take-up unit attached to the side plate by the side of a drive motor. It is a perspective view which decomposes | disassembles and shows the structure of the take-up unit attached to the side part plate located in the opposite side to the drive motor side. It is a perspective view which shows the state which removed the aperture pulley and the take-up unit. (A) is a side view in the vicinity of the drive motor of the belt conveyor apparatus showing a state before the aperture pulley is attached, (b) is a cross-sectional view along BB in (a), and (c) is a cross-sectional view along CC in (a). FIG. (A) is a side view of the vicinity of the drive motor of the belt conveyor device showing the state after the aperture pulley is attached, (b) is a sectional view taken along the line DD in (a), and (c) is an EE in (a). It is sectional drawing. It is a perspective view which shows the case where the detachable take-up unit is used only with respect to the side plate. It is a side view which shows the case where the aperture pulley used for the belt conveyor apparatus of an intermediate drive system is attached using the take-up unit of this embodiment. It is a perspective view which shows the structure of the take-up unit using the bracket which integrated members, such as a guide piece and a hook, shown in FIG.

Hereinafter, the structure of the belt conveyor apparatus 10 of this embodiment is demonstrated using FIGS. 1-7. The belt conveyor apparatus 10 according to the present embodiment is a belt conveyor apparatus 10 that conveys a conveyed product, for example, on a food production line such as fresh food or processed food, a pharmaceutical production line, or a cosmetic production line. Although the length of the belt conveyor apparatus 10 shown in FIGS. 1 to 7 is very short, it is shortened to explain the whole. In fact, the length of the belt conveyor apparatus 10 is long, and the drive unit is located on the tail pulley side just below the head pulley side.

  The belt conveyor device 10 includes a head pulley 20, a tail pulley, an apparatus main body having an upper frame 15 corresponding to a bed for supporting an endless belt 25 as a transport belt from below, side plates (side plates) 16 and 17, and a connecting member 18. 21, drive pulley (drive pulley) 22, throttle pulley 23, drive motor 24, endless belt 25, take-up units (take-up devices) 26 and 27, controller unit 28, lower cover 29, and the like. .

  The upper frame 15 supports the forward path side portion of the endless belt 25 from below. The upper frame 15 has a recess 15a at the center in the width direction (Y direction in FIG. 3) that is orthogonal to the width direction and extends in the running direction of the endless belt 25 (X direction in FIG. 3). A protrusion (not shown) provided on a surface opposite to the conveying surface of the endless belt 25 supported by the upper frame 15 (hereinafter referred to as a back surface) enters the recess 15a.

  The upper frame 15 has bent portions 15b and 15c bent 90 ° downward (in the −Z direction in FIGS. 1 and 2) at both ends in the width direction. The bent portions 15b and 15c respectively fix the support shaft 36 of the head pulley 20 and the support shaft 42 of the tail pulley 21 to both ends of the endless belt 25 in the traveling direction. Further, the bent portion 15b is fixed to the upper end portion of the side plate 16, and the bent portion 15c is fixed to the upper end portion of the side plate 17.

  The side plates 16 and 17 pivotally support the drive pulley 22 and the diaphragm pulley 23. The side plate 16 includes a groove portion (insertion portion) 16a into which one end portion 56a of the support shaft 56 of the throttle pulley 23 is inserted, and a groove portion (guide portion) into which the guide piece (inserted portion) 63 of the take-up unit 26 is inserted. 16b. These groove portions 16 a and 16 b extend in parallel from one end portion of the side plate 16 on the tail pulley 21 side toward the head pulley 20 side. The side plate 16 has a catch clip (locking member) 31 that locks with or releases the hook 64 (hook member) 64 provided in the take-up unit 26 in the vicinity of the groove 16b.

  The side plate 17 includes a groove portion (insertion portion) 17a into which the other end portion 56b of the support shaft 56 of the throttle pulley 23 is inserted, and a groove portion (guide portion) into which the guide piece (inserted portion) 73 of the take-up unit 27 is inserted. Part) 17b. These groove portions 17a and 17b extend in parallel from the tail pulley 21 side toward the head pulley 20 side. The side plate 17 has a catch clip (locking member) 32 for releasing the lock with the hook 74 or the hook 74 provided in the take-up unit 27 in the vicinity of the groove 17 b. . Here, the shape of the groove 16a of the side plate 16 and the shape of the groove 17a of the side plate 17 are the same. Further, the shape of the groove 16b of the side plate 16 and the shape of the groove 17b of the side plate 17 are the same shape. The groove portions 16a and 16b provided on the side plate 16 and the groove portions 17a and 17b provided on the side plate 17 are different from the groove portion 16a when the side plates 16 and 17 are fixed to the upper frame 15. The groove portion 17a faces and the groove portion 16b and the groove portion 17b face each other.

  The head pulley 20 is on a plane in which the axial direction of the head pulley 20 is orthogonal to the traveling direction (X direction in FIG. 3) on the forward path side of the endless belt 25 and parallel to the upper surface of the upper frame 15 (XY plane in FIG. 3). So as to be supported on one end side of the bent portions 15b and 15c of the upper frame 15. The head pulley 20 includes a cylindrical pulley portion 35 around which a back surface opposite to the conveying surface of the endless belt 25 is wound, a support shaft 36 that serves as a rotation center of the pulley portion 35, and both ends of the pulley portion 35. And a bearing (not shown) through which the support shaft 36 is inserted. Therefore, the head pulley 20 rotates only the pulley portion 35 when the endless belt 25 travels. The pulley portion 35 of the head pulley 20 has a concave portion 35a into which a protrusion provided on the back surface of the endless belt 25 enters the entire circumference at the center in the axial direction.

  The head pulley 20 has screws 37 and 38 on the support shaft 36 for adjusting the position of the support shaft 36 of the head pulley 20 when the head pulley 20 is supported on the upper frame 15. The screws 37 and 38 are screwed into screw holes (not shown) provided at both ends of the support shaft 36 of the head pulley 20 so that the axial direction is perpendicular to the axial direction of the support shaft 36. . The tips of the screws 37 and 38 screwed to both ends of the support shaft 36 protrude from the support shaft 36 and come into contact with stoppers 39 and 40 provided on the bent portions 15b and 15c of the upper frame 15, respectively. That is, by adjusting the amount of protrusion of the tips of the screws 37, 38 from the support shaft 36, the position of the head pulley 20 that is supported by the upper frame 15 is adjusted to prevent meandering mainly by adjusting the angle with the conveying direction. It can be done in a meaningful way.

  The tail pulley 21 has one end portion on which the head pulley 20 is pivotally supported so that the axial direction of the tail pulley 21 is included on a surface that is orthogonal to the transport direction of the transported object by the endless belt 25 and parallel to the upper surface of the upper frame 15. The other end of the upper frame 15 is pivotally supported by the bent portions 15b and 15c so as to be parallel to the head pulley 20 at the other end on the opposite side. The tail pulley 21 is provided at a cylindrical pulley portion 41 around which the back surface of the endless belt 25 is wound, a support shaft 42 that is a rotation center of the pulley portion 41, and both ends of the pulley portion 41, and the support shaft 42 is inserted through the tail pulley 21. Bearing (not shown). Therefore, the tail pulley 21 rotates only the pulley portion 41 when the endless belt 25 travels. The pulley portion 41 of the tail pulley 21 has a concave portion 41a into which a protrusion provided on the back surface of the endless belt 25 enters the entire circumference at the center in the axial direction.

  The tail pulley 21 has screws 43 and 44 on the support shaft 36 for adjusting the position of the support shaft 42 of the tail pulley 21 when the tail pulley 21 is supported on the upper frame 15. The screws 43 and 44 are screwed into screw holes (not shown) provided at both ends of the support shaft 42 of the tail pulley 21 so that the axial direction is perpendicular to the axial direction of the support shaft 42. The tip portions of the screws 43 and 44 screwed to both ends of the support shaft 42 protrude from the support shaft 42 and come into contact with stoppers 45 and 46 provided on the bent portions 15b and 15c of the upper frame 15, respectively. In other words, by adjusting the amount of protrusion of the tip of the screw 43, 44 from the support shaft 42, the position adjustment of the tail pulley 21 supported by the upper frame 15 is mainly meant to prevent meandering by adjusting the angle with the conveying direction. Can be performed.

  The drive pulley 22 is shifted from the center between the head pulley 20 and the tail pulley 21 toward the head pulley 20 in the traveling direction of the endless belt 25 and in the vertical direction of the belt conveyor device 10 (Z direction in FIG. 4). The head pulley 20 and the tail pulley 21 are disposed below. Although the length of the belt conveyor device 10 is very short, it is shortened for the sake of explanation as a whole. In fact, the length of the belt conveyor device 10 is long, and the drive unit is located on the tail pulley side just below the head pulley side. The drive pulley 22 is pivotally supported on the side plates 16 and 17 via bearing portions 51 and 52 having bearings at both ends in the axial direction. The rotating shaft of the drive pulley 22 is inserted into a hollow shaft (hollow shaft) of the drive motor 24 with one end located on the side plate 16 side protruding outward from the side plate 16. The drive pulley 22 is wound so that the back surface of the endless belt 25 folded back by the head pulley 20 faces the outer peripheral surface. The pulley portion 53 of the drive pulley 22 has a concave portion 53a into which a protrusion provided on the back surface of the endless belt 25 enters, over the entire circumference in the central portion in the axial direction.

  The diaphragm pulley 23 is wound around the conveying surface side of the endless belt 25 which is folded back obliquely upward by the drive pulley 22 and is folded back toward the tail pulley 21. The aperture pulley 23 is provided at a cylindrical pulley portion 55 around which the endless belt 25 is wound, a support shaft 56 that is a rotation center of the aperture pulley 23, and both ends of the pulley portion 55, and the support shaft 56 is inserted therethrough. And a bearing (not shown). That is, when the endless belt 25 travels, only the pulley portion 55 of the aperture pulley 23 rotates. Hereinafter, of both ends of the support shaft 56, one end located on the side plate 16 side will be denoted by reference numeral 56a, and the other end located on the side plate 17 side will be denoted by reference numeral 56b.

  The shape at both ends 56a and 56b of the support shaft 56 of the aperture pulley 23 is a shape (two-sided width shape) that is double-sided by two flat surfaces that are parallel to the axial direction. The two-sided width L1 at one end 56a of the support shaft 56 of the aperture pulley 23 and the two-sided width L2 at the other end 56b of the support shaft 56 of the aperture pulley 23 are the same width (L1 = L2). is there. Further, the width L1 of the two-sided width shape at the one end portion 56a of the support shaft 56 of the aperture pulley 23 is set to be narrower than the width L3 of the groove portion 16a provided in the side plate 16. Similarly, the width L2 of the two-face width shape at the other end portion 56b of the support shaft 56 of the aperture pulley 23 is set to be narrower than the width L4 of the groove portion 17a provided in the side plate 17.

  The diaphragm pulley 23 is supported by inserting one end portion 56a of the support shaft 56 into the groove portion 16a provided in the side plate 16 and the other end portion 56b of the support shaft 56 inserted into the groove portion 17a provided in the side plate 17. . As a result, the aperture pulley 23 is wound around the conveying surface side of the endless belt 25 that is folded back obliquely upward by the drive pulley 22. The throttle pulley 23 is held in a state where both end portions 56a and 56b of the support shaft 56 are pressed by the take-up units 26 and 27, and tension can be applied to the endless belt 25.

  The drive motor 24 is a hollow shaft type motor having a hollow shaft (hollow shaft) as a rotation axis. The drive motor 24 is disposed on the side plate 16 in a state where a bracket 58 provided on the case 24 a is fixed as a cantilever to a engagement protrusion 59 provided on the side plate 16 so as to be movable in a small amount. Therefore, when the drive motor 24 is driven, the drive pulley 22 is rotated, and the return portion of the wound endless belt 25 while the bracket 58 of the case 24a is slightly moved by the engagement protrusion 59 while the drive pulley 22 rotates. Toward the tail pulley 21. Therefore, the endless belt 25 between the head pulley 20 and the tail pulley travels in the direction A in FIG. 1 and FIG.

  In this embodiment, a hollow shaft type motor having a hollow shaft (hollow shaft) as a rotation axis is used as the drive motor 24, and the hollow shaft of the drive motor 24 is positioned on the side plate 16 side of the drive pulley 22. The driving force of the drive motor 24 is transmitted to the rotating shaft of the drive pulley 22 by fitting one end of the rotating shaft. As a configuration for transmitting the driving force of the drive motor 24 to the rotation shaft of the drive pulley 22, for example, a servo motor or an induction motor (induction motor) is used as the drive motor 24, and the rotation shaft of the drive motor 24 and the rotation of the drive pulley 22 are used. Sprockets may be provided on the shafts, respectively, and the driving force of the drive motor 24 may be transmitted to the drive pulley 22 by winding a chain around the sprockets provided on the rotary shafts.

  The endless belt 25 has a conveying surface at the top of the belt conveyor device 10 and is stretched between the head pulley 20 and the tail pulley 21 to form the forward path side, and is bent downward by the head pulley 20 and the tail pulley 21. In addition, it has a portion that is wound around the drive pulley 22 and the aperture pulley 23. Hereinafter, the belt portion of the endless belt 25 located on the return path side is referred to as a return portion.

  The total length of the endless belt 25 is set to a length that allows tension to be applied in a state where the endless belt 25 is wound around the head pulley 20, the tail pulley 21, the drive pulley 22, and the aperture pulley 23. On the back surface of the endless belt 25, a protrusion is provided over the entire circumference at the approximate center in the width direction of the endless belt 25. When the endless belt 25 travels, the protrusion enters the recess 37 a provided in the pulley portion 37 of the head pulley 20, the recess 41 a provided in the pulley portion 41 of the tail pulley 21, and the recess 53 a provided in the pulley portion 53 of the drive pulley 22. Is prevented from meandering in the width direction of the endless belt 25.

  The take-up unit 26 is attached to the side plate 16 in a state where one end portion 56a of the support shaft 56 of the throttle pulley 23 inserted into the groove portion 16a of the side plate 16 is pressed. The take-up unit 26 includes a bracket 61, a take-up bolt 62, a guide piece 63, and a hook 64. The bracket 61 is screwed with a bolt holding piece (first holding piece) 61a having a screw hole 65 into which a take-up bolt (pressing member) 62 is screwed, a guide piece 63, and a countersunk screw 69 for fixing the hook 64. And a hook holding piece (second holding piece) 61b having a screw hole 66. The hook holding piece 61 b is orthogonal to the bolt holding piece 61 a, and when the take-up unit 26 is attached to the side plate 16, the hook holding piece 61 b comes into contact with the side plate 16.

  The take-up bolt 62 presses the one end portion 56a of the support shaft 56 of the throttle pulley 23 inserted into the groove portion 16a of the side plate 16 toward the head pulley 20 side. The take-up bolt 62 is screwed into the bolt holding piece 61a in a screw hole 65 provided in the bolt holding piece 61a of the bracket 61 from a surface opposite to the surface on which the hook holding piece 61b is provided. The relative position of the take-up bolt 62 and the hook holding piece 61b is adjusted by adjusting the amount of protrusion from the surface on which the hook holding piece 61b is provided. Reference numeral 67 denotes a nut for preventing loosening of the take-up bolt 62 screwed into the bolt holding piece 61a.

  Here, when the take-up unit 26 is mounted on the side plate 16, the position of the central axis of the take-up bolt in the Z direction in FIG. 7 is the width direction of the groove 16a of the side plate 16 (Z direction in FIG. 7). The position of the horizontal line passing through the center of

  The guide piece 63 is a rectangular plate member disposed between the hook holding piece 61 b of the bracket 61 and the hook 64. The guide piece 63 is inserted into the groove 16 b of the side plate 16 when the take-up unit 26 is attached to the side plate 16. Therefore, when the guide piece 63 is inserted into the groove 16 b of the side plate 16, the moving direction of the take-up unit 26 is restricted to the extending direction of the groove 16 b of the side plate 16. The width L6 of the guide piece 63 in the Z direction in FIG. 5 is set to be narrower than the width L5 of the groove 16b provided in the side plate 16.

  As described above, the shape of the groove 16b provided in the side plate 16 and the shape of the groove 17b provided in the side plate 17 are the same shape. Therefore, the width of the groove 16b provided in the side plate 16 in the Z direction in FIG. 7 is the same as the width of the groove 17b provided in the side plate 17. Here, in FIG. 7, in order to eliminate the complexity of the drawing, the symbol L <b> 5 is attached only to the width in the Z direction in FIG. 7 of the groove 17 b provided in the side plate 17, and the side plate 16. No symbol is attached to the width in the Z direction in FIG.

  The guide piece 63 has two insertion holes 63a at the center in the Z direction in FIG. 5 and at a predetermined interval in the X direction in FIG.

  The hook 64 is locked to the liner 31a of the catch clip 31 when the take-up unit 26 is attached to the side plate 16, and the take-up unit 26 moves in the extending direction of the groove 16b of the side plate 16. , Preventing it from being removed from the side plate 16. In a state where the hook 64 is locked to the liner 31 a of the catch clip 31, the bolt holding piece 61 a of the bracket 61 is brought into contact with the side surface in the vicinity of the opening portions of the groove portions 16 a and 16 b provided in the side plate 16. The hook 64 has two insertion holes 64a at the center in the Z direction in FIG. 5 and at a predetermined interval in the X direction in FIG. The two insertion holes 64 a are inserted with countersunk screws 69 that fix the hook 64 to the bracket 61. The hook 64 is fixed to the bracket 61 with a flat head screw 69 in a state where the washer 68 and the guide piece 63 are laminated in this order from the hook holding piece 61b to the washer 67 and the guide piece 63.

  Here, the width L7 of the hook 64 in the Z direction in FIG. 5 is set wider than the width L5 of the groove 16b provided in the side plate 16 and the width L6 of the guide piece 63. Therefore, when the hook 64 is fixed to the hook holding piece 61 b, the upper end edge and the lower end edge of the hook 64 protrude from the guide piece 63.

  Although not shown, the distance from the hook 64 to the hook holding piece 61b is the total value of the thickness of the guide piece 63 and the thickness of the washer 68. This total value is slightly wider than the thickness of the side plate 16. Is set. Therefore, when the guide piece 63 is inserted into the groove portion 16 b of the side plate 16, the portion in the vicinity of the groove portion 16 a of the side plate 16 has an upper edge that protrudes from the guide piece 63 in the width direction of the hook holding piece 61 b and the hook 64. It will be in the state inserted between the part and the lower end edge part.

  Similarly, the take-up unit 27 is mounted on the side plate 17 in a state where the other end portion 56b of the support shaft 56 of the aperture pulley 23 inserted into the groove portion 17a of the side plate 17 is pressed toward the head pulley 20 side. The The take-up unit 27 includes a bracket 71, a take-up bolt (pressing member) 72, a guide piece 73, and a hook 74. The bracket 71 is a screw hole into which a bolt holding piece (first holding piece) 71 a having a screw hole 75 into which the take-up bolt 72 is screwed, a countersunk screw 79 that fixes the guide piece 73 and the hook 74 is screwed. And a hook holding piece (second holding piece) 71b having 76. The hook holding piece 71 b is orthogonal to the bolt holding piece 71 a, and when the take-up unit 27 is attached to the side plate 17, the hook holding piece 71 b comes into contact with the side plate 17.

  The take-up bolt 72 presses the other end portion 56b of the support shaft 56 of the throttle pulley 23 inserted into the groove portion 17a of the side plate 17 toward the head pulley 20 side. The take-up bolt 72 is screwed into the bolt holding piece 71a in a screw hole 75 provided in the bolt holding piece 71a of the bracket 71 from a surface opposite to the surface on which the hook holding piece 71b is provided. The relative position of the take-up bolt 72 and the hook holding piece 71b is adjusted by adjusting the amount of protrusion from the surface on which the hook holding piece 71b is provided. Reference numeral 77 denotes a nut for preventing loosening of the take-up bolt 72 screwed into the bolt holding piece 71a.

  Here, when the take-up unit 27 is attached to the side plate 17, the position of the central axis of the take-up bolt 72 in the Z direction in FIG. 7 is the width direction of the groove portion 17 a of the side plate 17 (Z direction in FIG. 7). ) Is the same as the position of the horizontal line passing through the center.

  The guide piece 73 is a rectangular plate member disposed between the hook holding piece 71 b of the bracket 71 and the hook 74. The guide piece 73 is inserted into the groove portion 17 b of the side plate 17 when the take-up unit 27 is attached to the side plate 17. Therefore, when the guide piece 73 is inserted into the groove 17 b of the side plate 17, the moving direction of the take-up unit 27 is restricted to the extending direction of the groove 17 b of the side plate 16. In FIG. 6, the width L8 of the guide piece 73 in the Z direction is set to be narrower than the width L5 of the groove portion 17b provided in the side plate 17. The guide piece 73 has two insertion holes 73a at the center in the Z direction in FIG. 6 and at a predetermined interval in the X direction in FIG.

  The hook 74 is engaged with the liner 32a of the catch clip 32 when the take-up unit 27 is attached to the side plate 17, and the take-up unit 27 moves in the extending direction of the groove portion 17b of the side plate 17. , To prevent removal from the side plate 17. In a state where the hook 74 is locked to the liner 32 a of the catch clip 32, the bolt holding piece 71 a of the bracket 71 is brought into contact with the side surface in the vicinity of the opening portions of the groove portions 17 a and 17 b provided in the side plate 17. The hook 74 has two insertion holes 74a at the center in the Z direction in FIG. 6 and at a predetermined interval in the X direction in FIG. The two insertion holes 74 a are inserted with countersunk screws 79 that fix the hook 74 to the bracket 71. The hook 74 is fixed to the bracket 71 with a flat head screw 79 in a state in which the washer 78 and the guide piece 73 are laminated in this order from the hook holding piece 71b to the washer 77 and the guide piece 73.

  Here, the width L9 of the hook 74 in the Z direction in FIG. 6 is set wider than the width L5 of the groove 17b provided in the side plate 17 and the width L8 of the guide piece 73. Therefore, when the hook 74 is fixed to the hook holding piece 71 b, the upper end edge and the lower end edge of the hook 74 protrude from the guide piece 73.

  Although not shown, the distance from the hook 74 to the hook holding piece 71b is a total value of the thickness of the guide piece 73 and the thickness of the washer 77, and this total value is slightly wider than the thickness of the side plate 17. Is set. Therefore, when the guide piece 73 is inserted into the groove portion 17 b of the side plate 17, the portion in the vicinity of the groove portion 17 a of the side plate 17 is the upper edge that protrudes from the guide piece 73 in the width direction of the hook holding piece 71 b and the hook 74. It will be in the state inserted between the part and the lower end edge part.

  The controller unit 28 performs on / off control of the belt conveyor device 10, control of the traveling speed of the endless belt 25, and the like.

  The lower cover 29 is a plate member having both ends bent upward. The lower cover 29 is fixed to the side plates 16 and 17 and covers the drive pulley 22 and the aperture pulley 23 that are pivotally supported by the side plates 16 and 17. The lower cover 29 is fixed to the side plates 16 and 17 using screws or the like.

  Next, the operation when the drawing pulley 23 is mounted on the side plates 16 and 17 having the apparatus main body using the take-up units 26 and 27 will be described with reference to FIGS. In the following description, the endless belt 25 is assumed to be loosely wound around the head pulley 20, the tail pulley 21, and the drive pulley 22 at the beginning and tensioned and wound after the mounting. In the initial state, since the aperture pulley 23 is not attached to the main body of the apparatus, the endless belt 25 avoids the outer side of the edges of the side plates 16 and 17 of the drive unit in a slack state where no tension is applied. The belt can be removed. When the aperture pulley 23 is attached to the apparatus main body, the return surface of the endless belt 25 located between the tail pulley 21 and the drive pulley 22 is brought into contact with the pulley portion 55 of the aperture pulley 23. In this state, one end portion 56 a of the support shaft 56 of the throttle pulley 23 is inserted into the groove portion 16 a of the side plate 16, and the other end portion 56 b of the support shaft 56 of the throttle pulley 23 is inserted into the groove portion 17 a of the side plate 17. . Therefore, the return portion of the endless belt 25 located between the tail pulley 21 and the drive pulley 22 is moved to the head pulley 20 side by the pulley portion 55 of the aperture pulley 23 and is wound around the pulley portion 55 of the aperture pulley 23. It becomes.

  Then, one end portion 56a of the support shaft 56 of the aperture pulley 23 is inserted into the groove portion 16a of the side plate 16, and the other end portion 56b of the support shaft 56 of the aperture pulley 23 is inserted into the groove portion 17a of the side plate 17, respectively. Thereafter, the take-up unit 26 is mounted on the side plate 16, and the take-up unit 27 is mounted on the side plate 17.

  When the take-up unit 26 is mounted on the side plate 16, the drawing pulley 62 is inserted into the groove 16 a of the side plate 16 and protruded from the side plate 16 at the tip of the take-up bolt 62 of the take-up unit 26. The guide piece 63 included in the take-up unit 26 is inserted into the groove 16 b provided on the side plate 16 in a state where the guide piece 63 is in contact with the outer peripheral surface of the one end 56 a of the support shaft 56. Then, the take-up unit 26 is pushed toward the head pulley 20 side. Thus, the direction in which the take-up unit 26 is pushed becomes the extending direction of the groove 16b of the side plate 16, and the take-up unit 26 is moved horizontally toward the head pulley 20 side.

  When the take-up unit 26 is moved horizontally toward the head pulley 20 side, the tip of the take-up bolt 62 of the take-up unit 26 is inserted into the groove 16a of the side plate 16 and the side plate 16 The outer peripheral surface of the one end portion 56a of the support shaft 56 of the throttle pulley 23 protruding from is pressed. As a result, one end portion 56a of the support shaft 56 of the throttle pulley 23 is moved horizontally together with the take-up unit 26 toward the drive pulley 22 side.

  Here, in the take-up unit 26, the guide piece 63 is sandwiched between the hook holding piece 61b of the bracket 61 and the hook 64, and the guide piece 63 and the hook 64 have a width in the Z direction in FIG. Therefore, the upper end portion and the lower end portion of the hook 64 are extended from the guide piece 63. Therefore, when the guide piece 63 of the take-up unit 26 is inserted into the groove 16b of the side plate 16, the vicinity of the groove 16b of the side plate 16 is between the hook holding piece 61b and the hook 64 of the take-up unit 26. To position.

  That is, the inner surface of the side plate 16 (the surface facing the side plate 17) is in contact with the hook holding piece 61b of the take-up unit 26. As a result, the take-up unit 26 can be prevented from moving in the thickness direction of the side plate 16. Further, since the shape of the guide piece 63 in the XZ plane in FIG. 5 is rectangular, the guide piece 63 rotates around the thickness direction of the side plate 16 when inserted into the groove 16b of the side plate 16. It can be prevented from moving.

  When the guide piece 63 is inserted into the groove 16 b of the side plate 16 by a predetermined amount, the liner 31 a of the catch clip 31 that is unlocked is locked to the hook 64 of the take-up unit 26. After the liner 31a of the catch clip 31 is locked to the hook 64 of the take-up unit 26, the lever 31b of the catch clip 31 is operated and the catch clip 31 is locked. When the catch clip 31 is locked, the bolt holding piece 61 a of the bracket 61 of the take-up unit 26 is in contact with the side surface of the side plate 16. In this state, the take-up unit 26 is in a state in which the hook holding piece 61b is in contact with the inner surface of the side plate 16 (the surface facing the side plate 17). The vicinity portion is in a state of being inserted between the hook holding piece 61 b and the upper end portion and the lower end portion of the hook 64. Therefore, when the catch clip 31 is locked while the liner 31a of the catch clip 31 is locked to the hook 64 of the take-up unit 26, the take-up unit 26 cannot be removed from the apparatus main body. Yes.

  When the take-up unit 27 is attached to the side plate 17, the tip of the take-up bolt 72 included in the take-up unit 27 is connected to the side plate 17 in the same manner as when the take-up unit 26 is attached to the side plate 16. The guide piece 73 included in the take-up unit 27 is in a state of being in contact with the outer peripheral surface of the other end portion 56b of the support shaft 56 of the throttle pulley 23 that is inserted into the groove portion 17a and protrudes from the side plate 17. It is inserted into a groove portion 17 b provided on the side plate 17. Then, the take-up unit 27 is pushed toward the head pulley 20 side. As a result, the direction in which the take-up unit 27 is pushed becomes the extending direction of the groove 17b of the side plate 17, and the take-up unit 27 is moved horizontally toward the head pulley 20 side.

  When the take-up unit 27 is moved horizontally toward the head pulley 20 side, the tip of the take-up bolt 72 of the take-up unit 27 is inserted into the groove portion 17a of the side plate 17 and the side plate 17 The outer peripheral surface of the other end portion 56b of the support shaft 56 of the throttle pulley 23 protruding from is pressed. As a result, the other end portion 56b of the support shaft 56 of the throttle pulley 23 is moved horizontally together with the take-up unit 27 toward the drive pulley 22 side.

  When the guide piece 73 is inserted into the groove 17 b of the side plate 17 by a predetermined amount, the liner 32 a of the catch clip 32 that is unlocked is locked to the hook 74 of the take-up unit 27. After the liner 32a of the catch clip 32 is locked to the hook 74 of the take-up unit 27, the lever 32b of the catch clip 32 is operated and the catch clip 32 is locked. When the catch clip 32 is locked, the bolt holding piece 71 a of the bracket 71 of the take-up unit 27 is in contact with the side surface of the side plate 17. In this state, the take-up unit 27 is in a state in which the hook holding piece 71b is in contact with the inner surface of the side plate 17 (the surface facing the side plate 16). The vicinity portion is in a state of being inserted between the hook holding piece 71 b and the upper end portion and the lower end portion of the hook 74. Accordingly, when the catch clip 32 is locked in a state where the liner 32a of the catch clip 32 is locked to the hook 74 of the take-up unit 27, the take-up unit 27 cannot be removed from the apparatus main body. Yes.

  In the state where the take-up unit 26 is mounted on the side plate 16 and the take-up unit 27 is mounted on the side plate 17, the throttle pulley 23 presses the endless belt 25 toward the head pulley 20, thereby Tension is applied to the belt 25. Here, when the take-up unit 26 is attached to the side plate 16 and the take-up unit 27 is attached to the side plate 17, the tension applied to the endless belt 25 by the throttle pulley 23 is not sufficient, Is excessively large, the protruding amounts of the take-up bolts 62 and 72 of the take-up units 26 and 27 are adjusted so that the tension applied to the endless belt 25 by the throttle pulley 23 becomes an appropriate magnitude.

  On the other hand, when removing the endless belt 25 from the apparatus main body, the lever 31b of the catch clip 31 is operated, and the locked catch clip 31 is unlocked. When the liner 31a is rotated after the catch clip 31 is unlocked, the engagement between the liner 31a and the hook 64 of the take-up unit 26 is released. After the locking of the liner 31 a of the catch clip 31 and the hook 64 of the take-up unit 26 is released, the take-up unit 26 attached to the side plate 16 is moved to the tail pulley 21 side and removed from the side plate 16. It is.

  Similarly, the catch clip 32 is unlocked, and the engagement between the liner 32a and the hook 74 of the take-up unit 27 is released. After the locking of the liner 32a of the catch clip 32 and the hook 74 of the take-up unit 27 is released, the take-up unit 27 attached to the side plate 17 is moved to the tail pulley 21 side and removed from the side plate 17. It is.

  The diaphragm pulley 23 in which one end portion 56a of the support shaft 56 is inserted into the groove portion 16a of the side plate 16 and the other end portion 56b of the support shaft 56 is inserted into the groove portion 17a of the side plate 17 is removed from the apparatus body. When the aperture pulley 23 is removed from the apparatus main body, the endless belt 25 is in a relaxed state where no tension is applied, that is, a state in which the belt can be removed while avoiding the outside of the edges of the side plates 16 and 17 of the drive unit. 25 can be easily removed from the apparatus main body. The removed endless belt 25 is washed and then attached to the apparatus main body. Then, the aperture pulley 23 is attached to the apparatus main body.

  Here, the protruding amount from the bolt holding piece 61a at the tip end portion of the take-up bolt 62 included in the take-up unit 26 and the protruding amount from the bolt holding piece 71a at the tip end portion of the take-up bolt 72 included in the take-up unit 27 are as follows. , Once adjusted, each held. Further, when the throttle pulley 23 is removed, the take-up bolts 62 and 72 are not loosened, and the take-up units 26 and 27 are removed as they are. Therefore, when the endless belt 25 is attached to the apparatus main body or removed from the apparatus main body, it is not necessary to readjust the take-up bolts 62 and 72. As a result, it is possible to facilitate the attachment / detachment work of the aperture pulley 23 when performing the removal work and attachment work of the endless belt 25, and to shorten the work time.

  In the present embodiment, the take-up units 26 and 27 that press both end portions 56a and 56b of the support shaft 56 of the aperture pulley 23 toward the head pulley 20 are detachable from the side plates 16 and 17, respectively. Yes. However, either one of the end portions 56a and 56b of the support shaft 56 of the throttle pulley 23 is pressed by a take-up unit that is detachable from the side plate located on the one end side, It is also possible to press the other end by a take-up unit fixed to a side plate located on the other end side. Hereinafter, the same components as those in the present embodiment will be described with the same reference numerals.

  As shown in FIG. 10, in the apparatus main body to which the aperture pulley 23 is attached, a detachable take-up unit 26 is attached to the side plate 16 located on the right side in FIG. The On the other hand, the take-up unit 81 is fixed to the side plate 80 located on the left side in FIG. Accordingly, the side plate 80 is the same as the side plate 17 of the present embodiment in that the side plate 80 has a groove portion 80a through which the other end portion 56b of the support shaft 56 of the aperture pulley 23 is inserted. The side plate 80 shown in FIG. 10 is different from the side plate 17 of the present embodiment in that the configuration of the groove 17b into which the guide piece 73 of the take-up unit 27 is inserted is omitted. In addition, although it has set as the structure which provided the groove part 80a in the side part plate 80, it is also possible to provide a long hole instead of the groove part 80a.

  The take-up unit 81 fixed to the side plate 80 has an L-shaped bracket 82, a take-up bolt 83, and a nut 84. The take-up bolt 83 is screwed into a screw hole (not shown) provided in the bracket 82 so that the axial direction coincides with the traveling direction of the endless belt 25. 10, the position of the central axis of the take-up bolt 83 when the take-up unit 81 is fixed to the side plate 80 is the width direction of the groove 80a provided in the side plate 80 (FIG. 10). The same position as the horizontal line passing through the center in the middle Z direction).

  When the aperture pulley 23 is mounted on the apparatus main body, the other end portion 56b of the support shaft 56 of the aperture pulley 23 is provided on the side plate 80 from the inner side of the side plate 80 (the side facing the side plate 16). It is inserted through the groove 80a. The aperture pulley 23 is inserted through a groove 80a provided in the side plate 80, and a portion of the outer peripheral surface of the other end portion 56b of the support shaft 56 of the aperture pulley 23 is in contact with the tip of the take-up bolt 83. Turn as the center of rotation. As the aperture pulley 23 rotates, one end portion 56 a of the support shaft 56 of the aperture pulley 23 is inserted into a groove portion 16 a provided in the side plate 16. In the process of inserting a predetermined amount of the one end portion 56a of the support shaft 56 of the aperture pulley 23 into the groove portion 16a provided in the side plate 16, the conveying surface of the endless belt 25 is wound around the pulley portion 55 of the aperture pulley 23. It becomes a state. The take-up unit 26 is attached to the side plate 16 by locking a catch clip 31 provided on the side plate 16. When the take-up unit 26 is attached to the side plate 16, the tip of the take-up bolt 62 of the take-up unit 26 presses the one end portion 56 a of the support shaft 56 of the aperture pulley 23 toward the head pulley 20 side. At the same time, the tip of the take-up bolt 83 of the take-up unit 81 presses the other end portion 56b of the support shaft 56 of the throttle pulley 23 toward the head pulley 20 side.

  Further, when removing the aperture pulley 23 from the apparatus main body, the catch clip 31 provided on the side plate 16 is unlocked, and the take-up unit 26 is removed from the side plate 16. Thereafter, the throttle pulley 23 is inserted into a groove 80a provided in the side plate 80, and is in contact with the tip of the take-up bolt 83 on the outer peripheral surface of the other end 56b of the support shaft 56 of the throttle pulley 23. After rotating the position around the center of rotation and pulling out one end portion 56a of the support shaft 56 of the aperture pulley 23 from the groove portion 16a provided in the side plate 16, the other end portion 56b of the support shaft 56 of the aperture pulley 23 is What is necessary is just to pull out from the groove part 80a of the side part plate 80. FIG.

  Also in this case, the protruding amount of the take-up bolt 62 included in the take-up unit 26 from the bracket 61 and the protruding amount of the take-up bolt 83 included in the take-up unit 81 fixed to the side plate from the bracket 82 are once. Once adjusted, there is no need to adjust again. In this case, the diaphragm pulley 23 can be attached and detached simply by attaching the take-up unit 26 to the side plate 16 or removing it from the side plate 16. As a result, the work of attaching and removing the endless belt 25 to and from the apparatus main body can be facilitated, and the work time required for the work can be shortened.

  In the present embodiment, in the take-up unit 26, the hook 64 is fixed by using a flat head screw 69 in a state where the guide piece 63 is sandwiched between the bracket 61 and the hook 64, whereby the take-up unit 26 is fixed to the side plate. 16, when the guide plate 63 of the take-up unit 26 is inserted into the groove 16 b of the side plate 16, the moving direction of the take-up unit is restricted to the horizontal direction. However, the mechanism for restricting the moving direction of the take-up unit 26 to the horizontal direction is not limited to the above. For example, a guide member having a substantially C-shaped cross section orthogonal to the longitudinal direction may be provided on the bracket, and a guide rail that enters the inside of the guide member may be provided on the side plate.

  In the present embodiment, the catch clips 31 and 32 are disposed on the side plates 16 and 17, respectively, and the hooks 64 and 74 are disposed on the take-up units 26 and 27. It is also possible to provide catch clips 31, 32 on the take-up units 26, 27.

  In this embodiment, the endless belt 25 folded back by the head pulley 20 and the tail pulley 21 is further wound around the drive pulley 22 and the aperture pulley 23, and the aperture pulley 23 is attached to the head pulley 20 by detachable take-up units 26 and 27. Although the belt conveyor apparatus 10 which moves horizontally toward the side and applies tension to the endless belt 25 is described, as shown in FIG. 11, the endless belt folded back by a head pulley and a tail pulley (not shown) In an intermediate drive type belt conveyor device 89 that wraps 90 around two throttle pulleys 91 and 92 and folds downward on the two pulleys 91 and 92 around a drive pulley 93, a detachable type Using the take-up unit 94, the spindle of the throttle pulley 91 5 is pressed toward the stop pulley 92 side, it is also possible to add tension to the endless belt 90. In this case, in the side plate 96 constituting the throttle pulley 91, a groove portion 96a into which the support shaft 95 of the throttle pulley 91 is inserted and a groove portion 96b into which a guide piece (not shown) of the take-up unit 94 is inserted. And a catch clip 98 for locking the hook 97 of the take-up unit 94 may be provided.

  In the present embodiment, in addition to screwing the take-up bolt 62 to the bracket 61 constituting the take-up unit 26, members such as a guide piece 63 and a hook 64 are fixed by a countersunk screw 69 or the like. However, the guide piece 63 and the hook 64 may be integrated with the bracket 61. For example, when the guide piece 63 and the hook 64 are integrated with the bracket 61 using a metal material, the bracket 101 to be described later is manufactured by metal integral molding such as zinc die casting or lost wax. It is preferable.

  As shown in FIG. 12, the take-up unit 100 includes a bracket 101 and a take-up bolt 102. The bracket 101 has a bolt holding piece 103 having a screw hole 103a into which the take-up bolt 102 is screwed. The bracket 101 has a locking portion 104 that extends from the bolt holding piece 103 in the X direction in FIG. 12 at the lower end of the bolt holding piece 103. The locking portion 104 has a hook 105 at one end in the thickness direction (Y direction in FIG. 12). Moreover, the latching | locking part 104 has support part 104a, 104b in the other end on the opposite side to the one end in which the hook 105 is provided in the Y direction in FIG. The support portions 104a and 104b extend along the extending direction of the locking portion 104 (X direction in FIG. 12). Further, the locking portion 104 has guide groove portions 106 and 107 extending in the vicinity of the support portions 104a and 104b and along the support portions 104a and 104b. Reference numeral 108 denotes a nut that prevents the take-up bolt 102 that is screwed to the bracket 101 from loosening. Here, the width L10 of the locking portion 104 and the length L11 from the upper end surface of the support portion 104a to the lower end surface of the support portion 104b are set wider than the width of the groove portion 16a of the side plate 16. Further, the distance L12 from the bottom surface of the guide groove portion 106 to the bottom surface of the guide groove portion 107 is set slightly narrower than the groove portion 16a of the side plate 16. Even when the take-up unit 100 having such a bracket 101 is used, the same effects as in the present embodiment can be obtained.

  In the above description, the case where the take-up unit 100 is used instead of the take-up unit 26 of the present embodiment has been described. However, the take-up unit 27 described in the present embodiment is also the same as the take-up unit 26. Similarly, the guide piece 73 and the hook 74 can be integrated with the bracket 71.

DESCRIPTION OF SYMBOLS 10 ... Belt conveyor apparatus, 16, 17, 80 ... Side plate, 16a, 17a ... Groove, 16b, 17b ... Groove, 20 ... Head pulley, 21 ... Tail pulley, 22 ... Drive pulley, 23, 91 ... Drawing pulley, 25 ... Endless belt, 26, 27, 81 ... Take-up unit, 31, 32 ... Catch clip, 56 ... Support shaft, 62, 72, 83 ... Take-up bolt, 63, 73 ... Guide piece, 64, 74 ... Hook

Claims (6)

A return pulley of the endless belt folded back by the head pulley and the tail pulley, and a drive pulley that feeds the return part of the endless belt wound toward the tail pulley;
A first throttle pulley that winds a return portion surface of the endless belt located between the tail pulley and the driving pulley to secure a winding amount of the endless belt that is wound around the driving pulley;
A side plate having an insertion portion for supporting the rotation shaft of the inserted first aperture pulley, while the rotation shaft of the first aperture pulley is inserted from the tail pulley side toward the head pulley side;
At the time of mounting on the side plate, the rotation shaft of the first throttle pulley supported inside the insertion portion is pressed toward the head pulley side, so that the first throttle pulley can be applied to the endless belt. A first take-up device for applying tension;
A locking member that makes the first take-up device detachable with respect to the side plate by locking or releasing the locking with the first take-up device mounted on the side plate; ,
A belt conveyor device comprising: The belt conveyor device according to claim 1,
The first take-up device is
When the first take-up device is attached to the side plate, a hook member that is locked to the locking member;
A pressing member that, when the first take-up device is attached to the side plate, presses the rotation shaft of the throttle pulley supported inside the insertion portion from the tail pulley side;
A first holding piece that adjustably holds the relative position of the pressing member; and a second holding piece that is provided to be orthogonal to the first holding piece and to which the flange member is fixed. A bracket that, when the first take-up device is attached to the side plate, the second holding piece comes into contact with the side plate from the side where the pulley portion of the throttle pulley is located;
A belt conveyor device comprising: In the belt conveyor apparatus of Claim 2,
A guide portion that is provided on the side plate and guides the first take-up device attached to the side plate from the tail pulley side toward the head pulley side;
An inserted portion provided between the flange member and the second holding piece of the bracket, and inserted into the guide portion;
A belt conveyor device comprising: In the belt conveyor apparatus of any one of Claims 1-3,
The side plate is
A first side plate on which one end in the axial direction of the rotation shaft of the first aperture pulley is supported;
A second side plate on which the other end in the axial direction of the rotation shaft of the first aperture pulley is supported;
Consisting of
The belt conveyor device, wherein the first take-up device is detachably attached to at least one of the first side plate and the second side plate. The belt conveyor device according to claim 4,
When the first take-up device is detachable from either the first side plate or the second side plate, the first take-up device is provided on the other side plate, and the rotation shaft of the first throttle pulley is inserted through the first take-up device. An insertion portion to be
A belt that includes a second take-up device that is fixed to the other side plate and presses the rotation shaft of the first aperture pulley that is inserted through the insertion portion toward the head pulley. Conveyor device. In the belt conveyor device according to any one of claims 1 to 5,
Of the return part of the endless belt wound around the drive pulley, the return part located between the head pulley and the drive pulley is wound, so that the endless belt is wound around the drive pulley. A belt conveyor apparatus, further comprising a second throttle pulley for securing an amount.

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