JP5068565B2 - Conveyor automatic alignment device - Google Patents

Description

  The present invention relates to a conveyor automatic alignment device that suppresses the occurrence of meandering (so-called rolling phenomenon in which the conveyor meanders while rotating left and right) when the conveyor runs, particularly a pipe conveyor.

  In a factory or the like, a pipe conveyor is mainly used for transporting transported items such as powders and granules. This pipe conveyor has the advantage that it can be safely transported because the conveyor body is cylindrical or pipe-shaped and the transported material is wrapped inside and transported in a sealed state, so there is no spillage or scattering of the transported material. have.

  Conventionally, for example, as shown in FIG. 7, a conveyor 100 is a support in which an endless belt body 103 is wound between a head pulley 101 and a tail pulley 102, and is arranged at a predetermined interval between the head pulley 101 and the tail pulley 102. The belt body 103 is rounded into a pipe shape and inserted through a through hole formed in the plate 104.

  A plurality of guide rollers 105 (generally, a total of six guide rollers 105, two upper and lower and four left and right upper and lower) are provided around the through hole of the support plate 104. Via the guide roller 105, the pipe-shaped belt main body 103 can be smoothly driven on the carrier side and the return side.

  The belt body 103 rolled into a pipe shape is held in a pipe shape by a plurality of guide rollers 105 during traveling as shown in FIG. During normal running, the joint 103a of the belt body 103 is maintained at a substantially constant position on both the carrier side and the return side of the conveyor as shown in FIG. On the other hand, when a non-uniform load or the like is applied to the belt main body 103 in the middle of the traveling path, for example, particularly in the curved portion or in some cases in the straight portion, the position of the joint 103a of the belt main body 103 as shown in FIG. Changes irregularly, and meandering of the conveyor 100 occurs.

  When such meandering occurs, spillage or the like occurs as it is, and it is necessary to adjust the meandering or rolling phenomenon. Conventionally, for example, as shown in FIG. 9, using a bolt or the like for attaching the guide roller 105 to the support plate 104, a bolt or washer is inserted at an appropriate position of the mounting bracket, and the mounting angle of the guide roller 105 is changed. Thus, measures such as adjusting the meandering were taken.

  As a device for adjusting the meandering or rolling phenomenon in this type of pipe conveyor, for example, a rolling adjusting device disclosed in Patent Document 1 or Patent Document 2 is known.

JP 2001-139115 A Japanese Patent Laid-Open No. 9-110125

  However, in the meandering adjustment method as shown in FIG. 9, for example, it takes a lot of time and labor to adjust the meandering. In other words, this type of pipe conveyor, which may have a total length of 1 km, is provided with a very large number of guide rollers, and it takes a lot of labor and time to adjust them individually. In addition, such an adjustment method is not effective, and the facility must be stopped every time adjustment is performed, and there is a problem that the operation rate of the facility is significantly affected.

  In view of such circumstances, an object of the present invention is to provide a conveyor automatic alignment device that accurately adjusts and suppresses meandering phenomenon particularly in a pipe conveyor and guarantees proper conveyor traveling.

  The conveyor automatic alignment device of the present invention is an automatic conveyor alignment device that is arranged in a proper position on the conveyor travel path and can be automatically adjusted to maintain proper travel, and is disposed around a pipe-shaped conveyor belt. A plurality of guide rollers that contact the conveyor belt to guide traveling, and a mount that supports and supports these guide rollers, and is rotatably mounted on a base, and the rotation shaft of the mount is Inclined with respect to the direction orthogonal to the conveyor traveling direction.

  In the conveyor automatic alignment device of the present invention, the pivot shaft of the gantry is inclined at a predetermined angle upstream or downstream in the conveyor traveling direction, and is a pair of guide rollers disposed on both sides of the conveyor belt. And a guide roller disposed at the bottom or top of the conveyor belt.

  In the conveyor automatic alignment device of the present invention, the pair of guide rollers are disposed so as to expand upward or downward from the vicinity of both ends of the guide roller disposed on the bottom or top. And

  In the conveyor automatic alignment device of the present invention, the guide rollers are normally arranged so as to be substantially orthogonal to the conveyor traveling direction, and the guide rollers are aligned with the conveyor traveling direction according to the rotation of the rotation shaft of the gantry. It is characterized in that the angle changes.

  In the automatic conveyor alignment apparatus of the present invention, a rotation angle adjusting mechanism for adjusting a rotation angle of the gantry is provided, and the gantry can be set and held at a desired rotation angle. .

  According to the present invention, when meandering occurs in the conveyor, particularly the joint portion of the conveyor belt is brought into pressure contact with the guide roller, whereby the entire gantry is rotationally biased. At the same time, the joint portion is pushed back by the repulsive force of the guide roller, and the normal state before the meandering is restored. According to the apparatus of the present invention, the meandering or rolling phenomenon of the conveyor belt can be automatically adjusted without manual intervention by the automatic centering action of the guide roller. In this case, even if meandering occurs, it is not necessary to stop the facility substantially, and the operating rate of the facility can be greatly improved.

Hereinafter, preferred embodiments of the automatic conveyor aligning device according to the present invention will be described using the same reference numerals for members that are substantially the same as or correspond to those of the conventional example, based on the drawings.
FIG. 1 is a diagram showing a schematic overall configuration as an example of a pipe conveyor 100 according to an embodiment of the present invention. In the pipe conveyor 100 of FIG. 1, an endless belt body 103 (conveyor belt) is wound between a head pulley 101 and a tail pulley 102 to support the head pulley 101 and the tail pulley 102 disposed at a predetermined interval. The belt body 103 is rolled into a pipe shape and inserted through a through hole formed in the plate 104.

Each of the support plates 104 has a plurality of guide rollers 105 (see FIG. 8) attached around the through holes, and pipes are provided on the carrier side (upper stage) and the return side (lower stage) through these guide rollers. The belt-shaped main body 103 travels as indicated by arrows F _C and F _R. In this embodiment, the total length of the pipe conveyor 100 is several hundred meters, and in some cases reaches 1 km.

In FIG. 1, a snubber pulley 106 is disposed at a position close to the head pulley 101, and a tension pulley 108 is interposed between the pair of bend pulleys 107. Further, the conveyor carrier side, rounded by the rollers 109 rounded Terupuri 102 near traveling as indicated by an arrow F _C, it is spread by the spread rollers 110 in front of the head pulley 101. Rounded by rounding rollers 111 near Bendopuri 107 in the return side runs as shown by an arrow F _R, it is spread by the rollers 112 spread in front of Terupuri 102.

  An automatic conveyor centering device 10 according to the present invention is disposed at an appropriate position on the conveyor path of the pipe conveyor 100 described above. In this example, one conveyor automatic alignment device 10 is installed on each of the carrier side and the return side, and these can be automatically adjusted to maintain proper travel of the pipe conveyor 100. In the illustrated example of FIG. 1, it is provided at a position separated by about 50 m from the head pulley 101 and a position separated by about 80 m from the tail pulley 102, but the application of the conveyor automatic alignment device 10 of the present invention is limited to these numerical values. It is not a thing.

  In this embodiment, for example, as shown in FIGS. 2 and 3, the case where the automatic conveyor centering device 10 is installed on the return side will be described. The conveyor automatic alignment device 10 is attached using an appropriate frame 113 or the like of the pipe conveyor 100 (which may be newly provided for the device of the present invention). In FIG. 2, the conveyor automatic alignment device 10 is illustrated on the bottom side and the upper side of the belt main body 103, but these are examples of the arrangement of the conveyor automatic alignment device 10, and only on the bottom side. By providing, a substantial effect can be obtained. Here, it is assumed that the conveyor automatic alignment device 10 is installed on the bottom side of the belt main body 103.

  A conveyor automatic alignment device 10 is arranged around a belt body 103 that is rounded into a pipe shape, and a plurality of cylindrical guide rollers 11 that contact the belt body 103 to guide traveling, and these guide rollers 11, and a gantry 12 that is rotatably supported on the base 13. In the present embodiment, the belt main body 103 includes a pair of guide rollers 11A and 11B disposed on both sides, and a guide roller 11C disposed on the bottom. As shown in FIG. 3, the guide rollers 11A and 11B are arranged in a substantially inverted “C” shape, that is, arranged so as to expand upward from the vicinity of both ends of the guide roller 11C. In this case, the expansion angle of the guide rollers 11A and 11B is not limited to the illustrated example, and can be adjusted to be wider or narrower as necessary.

  The conveyor automatic alignment device 10 will be further described with reference to FIGS. 4 and 5. The gantry 12 has a recess 12a for escaping the pipe-shaped belt main body 103 as shown in FIG. 3, and supports, for example, a roller mounting plate 12b formed in a substantially wing shape or the like and a roller mounting plate 12b as shown in FIG. Including a base plate 12c and a rotating shaft 12d for supporting the whole. Guide rollers 11A, 11B, and 11C are rotatably supported on the roller mounting plate 12b via brackets 14, respectively. In this case, the guide rollers 11A and 11B are arranged with center distribution with respect to the central guide roller 11C, and the rotation shafts of the guide rollers 11A, 11B, and 11C are set in parallel with the roller mounting plate 12b.

  As will be described later, the rotating shaft 12d of the gantry 12 is inclined with respect to a direction (diameter direction of the pipe-shaped belt main body 103) orthogonal to the conveyor traveling direction. As shown in FIG. 4, the base 13 has an upper surface 13a on which the bearing 15 is mounted and supported, and the upper surface 13a is inclined at a predetermined angle with respect to the conveyor traveling direction (typically substantially horizontal direction). The rotating shaft 12d of the gantry 12 is supported by the bearing 15 via the bearing 16, and is thereby inclined by a predetermined angle θ with respect to the direction orthogonal to the conveyor traveling direction. Although the inclination angle θ is about 20 °, it can be appropriately changed according to the model of the apparatus, and is not limited to this value.

  In this example, the rotating shaft 12d of the gantry 12 is inclined upstream in the conveyor traveling direction. However, when the roller mounting plate 12b is aligned in a direction perpendicular to the conveyor traveling direction as shown in FIG. 4, the guide rollers 11A and 11B Are arranged so as to be symmetrical as shown in FIG. That is, each guide roller 11 is disposed so as to be substantially orthogonal to the conveyor traveling direction under normal conditions. On the other hand, when the rotating shaft 12d of the gantry 12 rotates in either direction from the state of FIG. 5A, the guide rollers 11A and 11B are arranged asymmetrically as shown in FIG. 5B, for example.

  Here, as described above, the gantry 12 is mounted so as to be rotatable around an inclined rotation shaft 12d. In the present invention, the gantry 12 is further provided with a rotation angle adjusting mechanism for adjusting the rotation angle. As shown in FIGS. 4 and 5, relatively long bolts 17 for adjusting the rotation angle are provided so as to substantially correspond to both ends of the roller mounting plate 12b (FIG. 3) formed in a generally wing shape as described above. It is attached.

  The bolt 17 is supported on the frame 113 side via a bracket 18 on the base end side. In this case, it penetrates through a sleeve-like fastening member 19 fixed to the bracket 18 and is fastened by nuts 20 and 21 from both sides of the fastening member 19. The fastening member 19 is formed with a through hole 19a having a diameter larger than that of the bolt 17, and the bolt 17 passes through the through hole 19a in a loosely fitted state. In this case, the abutting portions of the nuts 20 and 21 with respect to the fastening member 19 are substantially spherical, that is, the nut 20 is convex and the nut 21 is concave.

  Further, the bolt 17 is connected to the roller mounting plate 12b at the tip side. In this case, it has a fastening member 22 fixed to the roller mounting plate 12b, and is fastened by nuts 20 and 21 from both sides as in the case of the fastening member 19. As described above, the roller mounting plate 12b connected to the frame 113 side via the bolt 17 typically rotates appropriately by changing the fastening position of the nuts 20 and 21 on the fastening member 22 side. It can be adjusted and held in position. As a result, for example, as shown in FIG. 5B, the gantry 12, and thus the guide roller 11, can be set and held at the rotational position as shown.

  The conveyor automatic alignment device 10 of the present invention is configured as described above, and the operation thereof will be described next. First, the operation of the device of the present invention will be described in principle with reference to FIG. 6A is a plan view, FIG. 6B is a side view, and FIG. 6C is a plan view. The belt main body 103 held in the shape of a pipe maintains the seam 103a at a substantially constant position as shown in FIG. 6 (A) during normal running (conveyor running direction is indicated by arrow F in FIG. 6 (A)). The In the illustrated example, it is assumed that the joint 103a is located slightly closer to one guide roller 11A (front side of the paper) than the center. Here, the basic principle is described, and the position of the joint 103a of the belt main body 103 may not always match the actual device. Then, meandering occurs on the conveyor 100, and for example, the joint 103a moves to the guide roller 11A side as indicated by a two-dot chain line in FIG. 6B.

  The portion of the seam 103 a bulges in the radial direction of the belt main body 103 as compared to other portions, and the guide roller 11 A is pressed by the belt main body 103 as the arrow 103 C as the seam 103 a comes into pressure contact. Is urged to rotate. As described above, the gantry 12 is rotatably mounted on the base 13, and in this example, the gantry 12 as a whole is rotated by the urging force against the guide roller 11A.

  As the gantry 12 rotates in this way, the contact pressure between the belt main body 103 (mainly the joint 103a portion) and the guide roller 11A increases, and at the same time, the guide roller 11A mainly repels the joint 103a. Strength also increases. The joint 103a is pushed back by the repulsive force from the guide roller 11A, that is, returns to the state before meandering as shown in FIG. In particular, in the apparatus of the present invention, the rotating shaft 12d of the gantry 12 is inclined with respect to the direction orthogonal to the conveyor traveling direction as described above. In the above-described operation example, the guide roller 11A itself is also aligned with the rotation of the gantry 12. Contact with 103a while having an inclination angle. The contact length between the joint 103a and the guide roller 11A viewed in the conveyor traveling direction and the direction of the reaction force at this time are effectively ensured, and the repulsive force against the joint 103a from the guide roller 11A can be effectively applied. it can. In this case, the bottom guide roller 11C is also inclined with respect to the conveyor traveling direction and contributes to the automatic alignment function.

  The meandering of the belt main body 103 once generated in this way is automatically adjusted by the automatic centering action of the guide roller 11. The meandering or rolling phenomenon of the belt body 103 can be adjusted without manual intervention, and even if meandering occurs, it is not necessary to stop the equipment substantially, and the operating rate of the equipment can be greatly improved.

  Here, the gantry 12 may be set and held at a desired rotation position effective for adjusting and suppressing meandering by using a rotation angle adjusting mechanism of the gantry 12. By adjusting the fastening position of the nuts 20 and 21 in the bolt 17 and setting and holding the rotation angle of the gantry 12, the conveyor can be forcibly aligned. In this case, since the work can be performed during operation of the equipment, the meandering adjustment can be performed efficiently.

  In the rotation angle adjusting mechanism of the gantry 12, the contact portions of the nuts 20 and 21 with respect to the fastening members 19 and 22 are substantially spherical as described above. Even if the relative angle with the bolt 17 changes with the rotation of the gantry 12 (see FIGS. 5A and 5B), the spherical shape of the abutting portion enables appropriate and accurate angle adjustment. To do.

  In the above embodiment, the example in which the guide roller 11 </ b> C is disposed on the bottom side of the rolled belt main body 103 has been mainly described. However, the present invention is not limited to this, and the automatic conveyor centering device 10 can be disposed on the upper side of the belt main body 103. In this case, a guide roller 11C is provided on the upper side of the belt main body 103, and the guide rollers 11A and 11B are disposed so as to expand in a substantially “C” shape from the vicinity of both ends thereof, that is, downward.

The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed as necessary.
For example, in the above-described embodiment, the example in which the rotating shaft 12d of the gantry 12 is inclined toward the upstream side in the conveyor traveling direction has been described. However, the rotation axis may be inclined toward the downstream side.

  Further, regarding the arrangement position of the automatic conveyor aligning device 10, in addition to the case where it is arranged at the bottom or top of the belt main body 103, it is arranged at any position around the pipe-shaped belt main body 103, for example, at a horizontal or oblique position. It is also possible to do. Further, in addition to the case where one conveyor automatic alignment device 10 is provided, for example, it is also possible to arrange them so as to form a pair of upper and lower ones.

  In the pipe conveyor 100 as an application example of the conveyor automatic alignment device described in this embodiment, an example in which one conveyor automatic alignment device 10 is provided on each of the carrier side and the return side as shown in FIG. 1 has been described. However, there are a wide variety of types and types of conveyors, and can be set as appropriate according to them.

It is a figure which shows the schematic whole structure as an example of the pipe conveyor which concerns on the conveyor automatic aligning apparatus of this invention. It is a side view in the example of application of the conveyor automatic alignment apparatus of this invention. It is a front view of the conveyor automatic alignment apparatus of this invention seen in the arrow A direction of FIG. It is a side view of the conveyor automatic alignment apparatus of this invention. It is a figure which shows the conveyor automatic aligning apparatus of this invention seen in the arrow B direction of FIG. It is a figure which shows in principle the effect | action of the conveyor automatic aligning apparatus of this invention. It is a figure which shows a prior art example. It is a figure which shows the mode at the time of meandering generation | occurrence | production in a conveyor. It is a figure which shows the example of the conveyor meander adjustment method in a prior art example.

Explanation of symbols

10 Conveyor automatic alignment device 11 Guide roller 12 Base 14 Bracket 15 Bearing 17 Bolt 18 Brackets 19 and 22 Fastening members 20 and 21 Nut 100 Pipe conveyor

Claims (5)

Conveyor automatic alignment device that is arranged in a proper place on the conveyor travel path and can be automatically adjusted to maintain proper travel,
A plurality of guide rollers disposed around a pipe-shaped conveyor belt and guided to travel in contact with the conveyor belt; and a pedestal mounted and supported on the guide rollers and rotatably mounted on a base. With
The conveyor automatic alignment device, wherein a rotation axis of the gantry is inclined with respect to a direction orthogonal to a conveyor traveling direction.   A rotation shaft of the pedestal is inclined at a predetermined angle upstream or downstream in the conveyor traveling direction, and a pair of guide rollers disposed on both sides of the conveyor belt as the guide rollers, and a bottom or top of the conveyor belt The conveyor automatic alignment device according to claim 1, further comprising a guide roller disposed on the conveyor.   3. The conveyor automatic alignment according to claim 2, wherein the pair of guide rollers are disposed so as to expand upward or downward from the vicinity of both ends of the guide roller disposed at the bottom or top. apparatus.   2. The guide rollers according to claim 1, wherein the guide rollers are normally arranged so as to be substantially perpendicular to a conveyor traveling direction, and an angle with respect to the conveyor traveling direction changes according to rotation of a rotation shaft of the gantry. The conveyor automatic alignment device according to any one of?   The rotation angle adjusting mechanism for adjusting the rotation angle of the gantry is provided, and the gantry can be set and held at a desired rotation angle. Conveyor automatic alignment system.

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