JP2005200194A - Belt shape holding device of pipe conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a belt shape holding device enabling the easy disassembly and assembly of annular shape holding rollers, the attachment and detachment of a belt, and the stable running of a pipe conveyor by preventing the resonance of the belt from occurring. <P>SOLUTION: In this pipe conveyor, a flat belt 3 is stretched between both side pulleys 1 and 2, and the lateral both edge parts of the flat belt 3 are overlapped with each other at the intermediate part of a conveyor to shape the flat belt in a pipe-like belt for carrying materials. A roughly semi-circular cutout part is downwardly formed in the support frames 9 of the annularly arranged annular shape holding rollers 10 forming the shape holding device at a length up to the center point of an upper pipe conveyor. The annular shape holding rollers 10 are formed in a vertically split type so that the pipe conveyor can be formed detachable. To prevent resonance, the device comprises a retaining guide roller 15, a holding guide roller 16, a pressing roller 19, or a supporting roller 22 for the flat belt 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pipe conveyor for conveying cereals, salt, and the like, in which an endless belt can be easily attached, and the conveyor belt can be stably transferred from a flat belt to a pipe belt and held in a pipe shape. The present invention relates to a belt shape retaining device.

  A pipe conveyor that stretches a belt between pulleys on both sides and overlaps both edges in the width direction of the belt to form a cylinder. It is widely used as a transport device. Conventionally, a general pipe conveyor has a structure in which a frame shape of a pipe-shaped belt shape retaining device has an insertion hole through which a belt of the pipe conveyor passes, and a plurality of shape-retaining rollers linked to each other by a roller central shaft at the periphery thereof In addition, the belt is guided by an integrated annular support device equipped with a supporting tool for supporting them. The structure can be seen in Patent Document 1 or 2, for example.

  In the case of a pipe conveyor that forms a cylindrical shape on either the forward path or the return path, when the inner diameter of the cylinder becomes 200 mm or more, the first annular holding is performed from the drive pulley of the conveyor on the forward path side as well as on the return path side. In many cases, the distance to the forming roller is usually about 3 to 4 m, and during this time, a resonance phenomenon occurs in the belt, and the belt does not converge into a circular shape and may become flat and not stable in a pipe shape.

  In general, the transported material is fed onto a pipe conveyor between a driven pulley and a shape-retaining roller by a chute or the like. In such an apparatus, the load applied to the belt of the pipe conveyor is constant and stable when the transported material is constantly supplied at a constant rate, but the load on the belt of the pipe conveyor is changed when the amount of the transported material or the drop position is changed. May change, resulting in an external factor that prevents the cylinder from being formed into a cylindrical shape. As a configuration that can correct the deviation in the width direction of the conveyor belt, there is Patent Document 2 or 3. The technology made it possible to freely adjust the right and left angle of the rotation center axis of the roller that presses at least the top part of the substantially cylindrical shape of the upper conveyor belt among the upper and lower conveyor belts with respect to the belt traveling direction. This is what is achieved.

JP-A-63-31915 (Claims, FIG. 1) JP-A-7-228320 (Claims, FIG. 3) JP-A-7-228323 (Claims, FIG. 3)

  Conventionally, in the frame structure of a pipe conveyor shape holding device having this kind of annular closing structure, the belt must be temporarily cut when the pipe conveyor is shipped from the factory, and then the endless belt is again bonded when installed. Further, the frame of the pipe conveyor shape retaining device is circular, and it is complicated to disassemble and assemble the annular shape retaining roller. Therefore, at least one step of the endless belt bonding process is omitted, the belt accuracy is not lowered by re-bonding the belt, and the shape of the pipe conveyor can be reduced by reducing the man-hours and shortening the installation period. Providing the device is a solution issue.

  Also, in the case of a pipe conveyor that forms a cylindrical shape for either the outward path or the return path, especially when the inner diameter of the cylinder is 200 mm or more, the distance from the forward driven pulley or the backward driving pulley to the first shape retaining roller The resonance phenomenon occurs in the belt during this period, and the belt does not converge into a circular shape and becomes flat, and the pipe shape may not be stable. The pressure roller described in Patent Document 2 or 3 is an effect that only corrects the deviation in the width direction of the conveyor belt after almost forming an annular belt, and the load applied to the belt up to that point is reduced. Even under fluctuating conditions, the effect of forming a stable cylindrical annular belt cannot be expected. Therefore, for the purpose of providing an apparatus for preventing the occurrence of a belt resonance phenomenon, it is an object of the present invention to provide an excellent performance as a belt shape retaining apparatus for a pipe conveyor as a whole.

  In order to solve the above objects and problems, the present invention has developed the following means. First, a pipe conveyor that stretches a flat belt between pulleys on both sides and overlaps both edges of the flat belt in the middle of the conveyor to keep it in a pipe-shaped belt is roughly divided from the driven pulley to the drive side. A type in which only the forward path between pulleys is held in a pipe-shaped belt, a type in which only a return path between a driving pulley and a driven pulley is held in a pipe-shaped belt, and a type in which both the forward path and the return path are held in a pipe-shaped belt There are three types. The means of the present invention can be applied to any of these three types of pipe conveyors. When the pipe conveyor is held in a cylindrical shape, the support frame of the annular shape retaining rollers arranged in an annular shape constituting the shape retaining device is used. The cut-out part is formed to the outside so that almost half of the cross-sectional area passes through the cut-out part of the support frame, and the annular shape retaining roller can be attached to and detached from the belt of the pipe conveyor. The present invention provides a belt shape retaining device for a pipe conveyor. Here, the shape of the notch portion of the support frame can be divided into two by attaching the annular shape-retaining roller and can be opened outward as viewed from the pipe conveyor body, and the notch shape is square. Even if they are close to each other, even if there are internal toothed irregularities on the edge of the arc, they are all included in a notch shape.

  Some of these pipe conveyors provide only the upper side of the forward path or only the lower side of the return path as a pipe-shaped belt and the other side as a flat belt. Belt. In this case, the support frame of the annular shape-retaining rollers arranged in the shape of the shape-retaining device is extended from the center point of the annular belt of the upper forward pipe conveyor to the center point of the annular belt of the lower return pipe conveyor. A belt shape retaining device for a pipe conveyor having a structure in which a substantially semicircular cutout is formed on each of the upper and lower sides and an annular shape retaining roller is divided so that all belts of the reciprocating pipe conveyor are detachable. When only one side is used as a pipe conveyor, it applies only to the corresponding side according to the case where both sides are used as a pipe conveyor.

  More specifically, when both sides are used as a pipe conveyor, a plurality of support frames for the annular shape retaining roller are provided in a direction perpendicular to the direction of travel of the pipe conveyor, and the support frame is made of a plate material. The length from the center point of the annular belt to the center point of the annular belt of the lower return pipe conveyor is approximately the upper and lower length (L) of the frame, and the upper and lower end faces of the annular belt of the upper outbound pipe conveyor A semicircle with a larger area than the lower half circle of the cross section of the pipe conveyor from the center point and a semicircle with an area larger than the upper half circle of the cross section of the pipe conveyor from the center point of the annular belt of the return pipe conveyor in the lower part of the notch This is a belt shape retaining device for a pipe conveyor having a notch shape.

  The annular shape retaining roller mounted on such a support frame is the center axis of the upper roller that retains the upper half of the upper pipe including the rollers that retain the left and right side surfaces in the upper forward pipe conveyor. The lower roller that supports the lower half of the shape is supported by a single arc-shaped outer shaft that passes through the center, and the lower roller that retains the lower half is circled by another curved inner shaft that passes through the center axis. The shafts are supported in an arc shape, and these shafts are respectively attached to the front and back of the frame in the pipe conveyor traveling direction, that is, the front and back sides, and at least the outer shaft is detachably attached.

  Further, in order to prevent the resonance of the belt, the width of the flat belt when the return pipe conveyor passing through the belt pulley is deformed into a cylinder until the pipe conveyor is held in a cylindrical shape from the flat belt. The presser roller that contacts the belt was provided at the center line position.

  A plurality of the press rollers are arranged in the traveling direction of the conveyor to secure the belt shape of the pipe conveyor.

  As another means, as an effective means to ensure that the flat belt of the forward pipe conveyor that has passed through the driven pulley is formed into a cylindrical shape, a metal roller is attached to one peripheral portion of the belt forming the cylindrical shape. One or several pairs are arranged so as to face each other with a slightly larger interval so that the belt passes through the gap, and similarly, a metal roller for sandwiching the belt is arranged at the peripheral portion of the other belt. Alternatively, one or several metal rollers may be arranged so that the belt is pressed down. It is effective if the above means is turned upside down for the return pipe conveyor that has passed through the driving pulley.

  The material is supplied onto the belt by the feeding chute from the upper part of the belt of the forward pipe conveyor until the forward pipe conveyor passes through the driven pulley and is formed into a cylinder. In order to prevent the belt from fluctuating due to the impact of the material falling to the position below the belt where this material falls, the support member that contacts the belt is a round bar, pipe, etc. perpendicular to the direction of belt travel. To make and install. A plurality of the support members are rotatably provided and supported by bearings provided on the main frames on both sides, and a plurality of the support members are arranged in the moving direction of the conveyor. In order to make the support member rotatable, it is preferable to use a receiving roller.

  Since the belt shape holding device for the pipe conveyor of the present invention has the above-described structure, in the conventional frame structure of the annular closed structure, the belt is once cut at the time of shipment of the pipe conveyor from the factory, and endless adhesion processing is performed again at the time of installation. However, it was necessary to easily disassemble the circular structure of the frame of the pipe conveyor shape retaining device and make it possible to assemble it, so that at least one man-hour could be omitted and the belt was bonded again. The reduction in accuracy has been avoided, and the cost can be reduced by reducing the number of man-hours and the installation period can be shortened.

  In addition, the guide roller is rotatably installed in such a manner that at least one edge of the belt is sandwiched between the driven roller of the conveyor and the driving roller and the shape-retaining roller at both edges of the belt. As a result, the belt has become stable and the resonance phenomenon does not occur.

  Furthermore, by installing the presser roller in the middle part of the belt so that it can rotate between the driving roller and the shape-retaining roller of the conveyor, as with the above guide roller, the pipe conveyor belt can be made into a rotating pipe and the resonance phenomenon No longer wakes up.

  Hereinafter, the belt shape retaining device for a pipe conveyor according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall plan view of a pipe conveyor according to the present invention, and FIG. 2 is a side view thereof. 3 is an attachment side view of the annular shape-retaining roller shown in the enlarged view of the AA portion in FIG. 2, and FIG. 4 is a left side view of FIG. FIG. 5 is a mounting view of the presser guide roller, the clamping guide roller, and the presser roller, the lower half of which is shown in the cross-sectional enlarged view of the portion B in FIG. 2 and the upper half of the portion D in FIG. FIG. 6 is a partially longitudinal enlarged view of the triple clamping guide roller. FIG. 7 is an enlarged view of a portion C in FIG. 2 showing a mounting portion of the receiving roller.

  The pipe conveyor according to the present invention has an overall shape as shown in FIGS. 1 and 2, for example, in a brewery, raw materials such as rice and wheat grains used as a koji making material, or transportation of koji and salt, etc. It is suitable for. That is, the flat belt 3 is stretched between the belt pulleys 1 and 2 on both sides, and both edges in the width direction are sequentially overlapped as the flat belt 3 advances to form a pipe-shaped pipe belt portion 4 from the raw material charging hopper 5. The raw material dropped on the belt 3 is transported by enclosing the raw material with an annular belt of the pipe belt portion 4 and isolated from the outside, and again transferred to the raw material receiving hopper 6 as a flat belt before reaching the belt pulley 2 at the other end. To do. In such a pipe conveyor annular shape retaining device 7, it is necessary to pass the upper pipe conveyor in the forward path and the lower pipe conveyor in the backward path through the annular shape retaining roller 10 from opposite directions. For this purpose, a plurality of annular roller support frames 9 of the pipe conveyor annular shape retaining device 7 having two belt insertion holes 8 on the upper and lower sides of the conveyor are provided in a direction perpendicular to the traveling direction of the pipe conveyor.

  As shown in FIGS. 3 and 4, the support frame 9 to which the annular shape-retaining rollers 10 constituting the pipe conveyor annular shape-retaining device 7 are attached has a length to the center point of the upper pipe belt portion 4. A substantially semicircular cutout is formed at the bottom, and the annular shape retaining roller 10 is vertically divided into two parts, and the belt of the pipe conveyor is detachably divided into two parts. That is, these drawings are views of the supporting portion of the annular shape retaining roller 10 with respect to the annular roller supporting frame 9 of the pipe conveyor annular shape retaining device 7, and the shape of the supporting frame 9 is the center of the upper pipe conveyor. The length L approximately equal to the length from the point P1 to the center point P2 of the lower pipe conveyor is the upper and lower length L of the support frame, and is larger than the lower half circle of the cross section of the pipe conveyor from the center point of the pipe belt portion 4 in the forward path. The arc shape is cut out in a semicircular shape. An annular shape-retaining roller 10 that retains the shape of the pipe belt portion 4 in an annular shape is formed by bending the shape-retaining rollers on the left and right side surfaces of the pipe conveyor through the respective central axes of the annular shape-retaining rollers 10 on the upper side. The annular shape-retaining roller 10 is pivotally supported by a single outer shaft 11 and below the left and right side surfaces of the pipe conveyor, and is supported by another curved inner shaft 12 penetrating each central axis. As a result, the annular shape retaining roller 10 can be divided into an upper shape retaining roller group and a lower shape retaining roller group in the upper and lower directions, and the pipe conveyor can be easily detached from the annular shape retaining roller 10.

  The outer shaft 11 that supports the outer shape retaining roller group is screwed to the upper support piece 13 protruding from the support frame 9 of the annular shape retaining roller 7 of the annular shape retaining device 7 with respect to the traveling direction of the pipe conveyor by bolts and nuts. The inner shaft 12 that supports the inner shape retaining roller group is screwed to the lower support piece 14 of the frame surface on the opposite side by bolts and nuts.

  The above is a description of the shape of the annular shape retaining device 7 of the forward pipe conveyor, but the support shape of the upper and lower shape retaining roller group of the return pipe conveyor constituting the lower half of this device is as shown in FIGS. Since it is the same shape rotated 180 degrees with respect to the advancing direction of a pipe conveyor, it abbreviate | omits. The outer shaft 11 that is screwed to the upper support piece 13 of the support frame 9 in the annular shape retaining device 7 and supports the upper shape retaining roller group can be easily detached from the support frame 9 of the annular shape retaining roller. Thus, it is possible to stretch and install between the pulleys on both sides without cutting the belt in an endless continuous state from the arc-shaped space generated by the removal of the upper shape retaining roller group.

  In the wide flat belt 3 and the long-distance flat belt 3, 3 m until the belt of the forward path or the return path pipe conveyor that has passed through the left and right belt pulleys 1 and 2 is circularly held as the pipe belt portion 4 in a cylindrical shape. Advance forward and backward distances. It has already been mentioned that under certain conditions, a so-called resonance phenomenon occurs, the belt becomes unstable, and the pipe may not be clean. In the shape-retaining device for the annular belt of the present invention, as a measure for preventing this resonance phenomenon, at least one of the belt peripheral portions is slightly larger than the thickness of the flat belt when the flat belt 3 is about to move to the pipe belt portion 4. It is effective to arrange one or a plurality of sandwiching guide rollers 16 so as to be sandwiched relative to each other with an interval between them, and to contact the belt with a force that lightly touches the belt. That is, in FIG. 5, the flat belt of the pipe conveyor is about to be deformed from the flat belt 3 that has passed through the belt pulley 2 as shown in the arrangement on the return pipe conveyor side (downward) which is the B cross section of FIG. Thus, the pressing guide roller 15 and the sandwiching guide roller 16 are arranged in a pair on the left and right sides at a position where the both edges of the flat belt 3 are sandwiched in a substantially inverted eight shape by slightly changing the angle from the oblique direction. The forward pipe conveyor side (upper side), which is a cross section D in FIG. 2, is a sandwiching guide roller 16 on both the left and right sides, and both are sandwiched. As described above, the guide roller may be used in accordance with the width and length of the flat belt to determine whether the clamping type is used at both ends or whether one side is a clamping type and the other is a normal pressing guide roller.

  FIG. 6 is a diagram showing a triple support piece 17 showing a state in which the clamping guide roller 16 is attached in triplicate. As can be seen from the cross-sectional structure of the clamping guide roller 16 on the right front side, it is heavy and moves. It is preferably made of a stainless steel that can withstand the pressure of a flat belt and is made of a roller through a bearing, and has a spherical long tip. Although not shown in the figure, the guide roller can be supported on the upper left and right ends of the arc-cut frame, and the shape of the pressing roller of the belt overlapping portion of the cylindrical shape top of the belt shaper of the pipe conveyor is as follows. Various modifications are possible, such as using a drum or a roller having a longer longitudinal direction than the other rollers. As shown in FIG. 5, the triple clamp guide roller is mounted on the roller conveyor by taking out the mounting arm 18 from the main body frame or the like and fastening the triple support piece 17 to the tip thereof with bolts and nuts. It can be realized by an appropriate method.

  FIG. 5 shows a press roller 19 that is further devised to prevent resonance phenomenon. This is a belt presser for preventing resonance at a position on the center line of the belt width when the belt is about to be deformed into a cylinder while traveling the approximately 3 m running distance of the flat belt 3 described above. It is effective to bring the presser roller 19 into contact with the belt with a force that lightly touches the belt. A plurality of pressing rollers may be arranged in the moving direction of the conveyor. Therefore, a plurality of transverse beams 20 provided near the center of the return pipe conveyor of FIG. In this way, the belt is not disturbed.

  In order to further enhance the resonance prevention effect, the belt shape retaining device for a pipe conveyor according to the present invention is arranged from the lower side of the flat belt 3 from the feeding chute 21 of the raw material feeding hopper 5 to the position where the raw material falls in the forward pipe conveyor. A receiving roller 22 is provided as a support member.

  FIG. 7 showing an enlarged view of part C in FIG. 2 is an example, and when the flat belt 3 is supported by a support member such as a round bar or a bar roller from the lower side and the pipe conveyor is supported, the belt travels. It is effective for stabilization. In the example shown in the figure, the support member is a receiving roller 22, and the main frame 23, which is the framework of this pipe conveyor, is supported at a position below the flat belt that has passed through the belt pulley, at a right angle to the traveling direction of the flat belt 3, This is a belt shape retaining device for a pipe conveyor that is extended and supported in three stations. The long receiving roller 22 in contact with the belt is a resonance phenomenon of the pipe conveyor caused by the amount of raw material input or a change in balance due to the joint work with the presser guide roller 15 and the triple clamping guide roller 16 described above. Can be almost completely prevented.

1 is an overall plan view of a pipe conveyor according to the present invention. It is the whole pipe conveyor side view concerning the present invention. It is an attachment side view of the annular shape-retaining roller shown in the AA part enlarged view in FIG. FIG. 4 is a left side view of FIG. 3. FIG. 3 is an attachment diagram of a presser guide roller, a sandwiching guide roller, and a presser roller, the lower half of which is shown in a cross-sectional enlarged view of a portion B in FIG. 2 and the upper half of a portion D in FIG. It is a partially vertical enlarged view of a triple clamping guide roller. It is the C section enlarged view in FIG. 2 which shows the attachment part of a receiving roller.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Belt pulley 2 Belt pulley 3 Flat belt 4 Pipe belt part 5 Raw material charging hopper 6 Raw material receiving hopper 7 Pipe conveyor annular shape retaining device (annular shape retaining device)
8 Belt insertion hole 9 Support frame (support frame) of annular shape retaining roller
10 annular shape retaining roller 11 outer shaft 12 inner shaft 13 upper support piece 14 lower support piece 15 presser guide roller 16 clamping guide roller 17 triple support piece 18 mounting arm 19 presser roller 20 cross beam 21 input chute 22 receiving roller 23 main flame

Claims (9)

In a pipe conveyor in which a flat belt is stretched between pulleys on both sides and both edges in the width direction of the flat belt are overlapped in the middle of the conveyor to be held in a pipe-shaped belt, the shape is retained on the side used as a pipe-shaped belt The support frame of the annularly-shaped annular shape retaining rollers constituting the apparatus is viewed from the pipe conveyor body so that when the pipe conveyor is held in a cylindrical shape, almost half of the cross-sectional area passes through the notch portion of the support frame. A belt shape-retaining device for a pipe conveyor, wherein a notch portion is formed toward the outside, and the annular shape-retaining roller is divided so that the annular belt of the pipe conveyor is detachable. A shape-retaining device is configured in a pipe conveyor in which a flat belt is stretched between pulleys on both sides, and both edges in the width direction of the flat belt are overlapped at the intermediate portion of the conveyor to retain the shape of a pipe belt on both the forward and return paths. The length of the support frame of the annular shape retaining rollers arranged in an annular shape from the center point of the annular belt of the upper forward pipe conveyor to the approximate center point of the annular belt of the lower return pipe conveyor is the length of the upper and lower frames (L) And a belt shape-retaining device for a pipe conveyor, wherein a substantially semicircular cutout is formed on the upper and lower sides, and the annular shape-retaining roller is divided so that the belts of the upper and lower pipe conveyors are detachable. A plurality of support frames for the annular shape-retaining roller are provided in a direction perpendicular to the direction of travel of the pipe conveyor. The support frame is formed of a plate material and is half the cross-sectional area of the annular belt of the pipe conveyor from the center point of the annular belt of the pipe conveyor. 3. A belt shape-retaining device for a pipe conveyor according to claim 1 or 2, wherein the shape is a substantially semi-circular shape larger than that of the pipe conveyor. The annular shape-retaining roller includes a roller that retains the left and right side surfaces of the annular belt of the pipe conveyor, and includes one curved outer surface that passes through the central axis of each of the upper rollers that retain the upper half. The lower roller, which is supported by the shaft in a circular arc shape and retains the lower half, is supported in a circular arc shape by another curved inner shaft penetrating each central axis, and these outer and inner shafts The belt shape retaining device for a pipe conveyor according to claim 1 or 2, wherein the frame is attached to the front and back of the pipe conveyor in the traveling direction, and at least the outer shaft is detachably attached. In a pipe conveyor in which a flat belt is stretched between pulleys on both sides, and both edges in the width direction of the flat belt are overlapped at the intermediate part of the conveyor to keep the pipe belt, the flat belt that has passed through the belt pulley is an annular belt. 1 to 3 guide rollers are arranged in such a manner that the edge of the belt is clamped as the belt is deformed into an annular shape until the belt is held in shape, and the other edge of the belt is pressed. A belt shape-retaining device for a pipe conveyor in which any one pair of one to three guide rollers in a form in which a guide roller or an edge is sandwiched is arranged in an approximately eight shape. In a pipe conveyor in which a flat belt is stretched between pulleys on both sides, and both edges in the width direction of the flat belt are overlapped at the intermediate part of the conveyor to keep the pipe belt, the return pipe conveyor that has passed through the belt pulley is flat. The belt shape of a pipe conveyor provided with a presser roller in contact with the belt at a position on the center line of the flat belt width when the belt is about to be deformed into a cylindrical shape from the belt until it is retained in a cylindrical shape. apparatus. 7. A belt shape retaining device for a pipe conveyor according to claim 6, wherein a plurality of pressing rollers are arranged in the moving direction of the conveyor. In a pipe conveyor in which a flat belt is stretched between pulleys on both sides, and both edges in the width direction of the flat belt are overlapped at the intermediate part of the conveyor and held in a pipe-shaped belt, the flat pipe conveyor passes through the belt pulley. A belt shape-retaining device for a pipe conveyor, which is provided with a long support member in contact with a belt that extends in a direction perpendicular to the traveling direction of the flat belt at a position below the belt. 9. The belt shape retaining device for a pipe conveyor according to claim 8, wherein the support member is a receiving roller, and a plurality of the receiving rollers are arranged in the moving direction of the conveyor.

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