JP2012153481A - Pipe conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate maintenance of contact between a support roller of a belt support device and a pipe-like part of a conveyer belt.SOLUTION: This pipe conveyer 1 includes an endless strip-like conveyer belt 2 having a part rounded into a pipe-like form, and a belt support device 10 for supporting the pipe-like part 2A rounded into a pipe-like form out of the conveyer belt 2, wherein the belt support device 10 includes, for the pipe-like part 2A in the outside in its radial direction, a plurality of support rollers 13 arranged in the circumferential direction of the pipe-like part 2A; the support rollers 13 support the pipe-like part 2A by contacting the pipe-like part 2A from the outside in the radial direction; the support rollers 13 are movably supported in the radial direction and energized to the inside in the radial direction by energization means 22.

Description

  The present invention relates to a pipe conveyor.

  2. Description of the Related Art Conventionally, as shown in, for example, Patent Document 1 below, an endless belt-shaped conveyor belt partially rounded into a pipe shape, and a belt support device for supporting a pipe-shaped portion rounded into a pipe shape of the conveyor belt Are known. The belt support device includes a plurality of support rollers arranged in an annular shape so as to surround the pipe-shaped portion, and these support rollers come into contact with the pipe-shaped portion from the outside in the radial direction, so that the pipe is supported. Supports the shaped part.

Japanese Utility Model Publication No. 57-147808

  By the way, in this type of pipe conveyor, when the same conveyor belt is used over a long period of time, the lateral rigidity of the conveyor belt gradually decreases, and the pipe-shaped portion is reduced in diameter. Therefore, in the conventional pipe conveyor, even if all of the plurality of support rollers are in contact with the pipe-shaped portion at the initial stage when the use of the conveyor belt is started, the diameter of the pipe-shaped portion is reduced due to aging, Some of the plurality of support rollers may not contact the pipe-shaped portion. In this case, it is difficult to stably support the pipe-shaped portion, and for example, the pipe-shaped portion may be twisted around the pipe axis.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a pipe conveyor that can easily maintain the contact between the support roller of the belt support device and the pipe-shaped portion of the conveyor belt. Is to provide.

In order to solve the above problems, the present invention proposes the following means.
A pipe conveyor according to the present invention includes an endless belt-shaped conveyor belt partially rounded into a pipe shape, and a belt support device that supports a pipe-shaped portion of the conveyor belt that is rounded into a pipe shape, The belt support device includes a plurality of support rollers arranged in the circumferential direction of the pipe-shaped portion on the outer side in the radial direction with respect to the pipe-shaped portion, and these support rollers are disposed on the pipe-shaped portion in the radial direction. A pipe conveyor for supporting the pipe-like portion by abutting from the outside of the belt, wherein the support roller is supported so as to be movable in the radial direction and biased inward in the radial direction by a biasing means. It is characterized by being.

  According to this invention, the support roller is supported so as to be movable in the radial direction, and is urged inward in the radial direction by the urging means, so that the pipe-shaped portion is reduced in diameter due to secular change. Even so, the support roller moves inward in the radial direction following the diameter reduction of the pipe-shaped portion, and it is possible to easily maintain the contact between the support roller and the pipe-shaped portion.

  In addition, the belt support device may include an adjusting unit that adjusts an inclination angle of the rotation shaft of the support roller with respect to an orthogonal surface orthogonal to the pipe axis.

In this case, when the pipe-shaped portion is about to be twisted around the pipe axis, the adjustment means adjusts the inclination angle of the rotation shaft of the support roller, and the pipe from the contact portion of the support roller with the pipe-shaped portion. By imparting a straightening force to the tube-shaped portion in the direction opposite to the direction in which the pipe-shaped portion is to be twisted, the twist of the pipe-shaped portion can be corrected.
Here, as described above, in the pipe conveyor, it is possible to easily maintain the contact between the support roller and the pipe-shaped portion, so that the correction force is reliably applied from the support roller to the pipe-shaped portion. Even if the diameter of the pipe-shaped portion is reduced due to aging, the twist of the pipe-shaped portion can be effectively corrected.

As described above, the twist of the pipe-shaped portion can be corrected, so that it is possible to easily maintain the overlapping of the side ends of the conveyor belts that are overlapped with each other in the pipe-shaped portion. It can suppress that the inside of a shape-like part is released.
Further, as described above, since the twist of the pipe-shaped portion can be corrected, the circumferential position of the ear portion formed by overlapping the side ends of the conveyor belt in the pipe-shaped portion with respect to the belt support device is determined. It can be stabilized. As a result, when the pipe-like portion is developed and flattened in the belt width direction, for example, the side portion of the conveyor belt is bent inward in the belt width direction without the pipe-like portion being completely developed. And it can control that a conveyor belt becomes an unexpected shape, and can make the said pipe-shaped part flat easily.

  In addition, when the said pipe-shaped part drive | works while curving, since it is easy to twist, the above-mentioned effect will be remarkably achieved.

  In addition, the belt support device includes a support plate in which a passage hole through which the pipe-like portion passes is provided in the pipe axial direction, and supports the support roller so as to be movable in the radial direction. The adjacent support rollers may be alternately arranged in the pipe axis direction with the support plate interposed therebetween.

  In this case, since the support rollers adjacent to each other in the circumferential direction are alternately arranged in the pipe axial direction with the support plate interposed therebetween, the support rollers adjacent to each other in the circumferential direction are contracted in the pipe-shaped portion. Even if it moves toward the inner side in the radial direction following the diameter, the movement is not buffered. Therefore, these support rollers can be arranged close to the circumferential direction.

Thus, since the support rollers adjacent in the circumferential direction can be arranged close to the circumferential direction, the running of the conveyor belt can be stabilized. That is, when the interval between the support rollers is widened, the side end portions of the conveyor belt overlapped with each other in the pipe-shaped portion are likely to enter the interval, which may affect the running of the conveyor belt.
Further, since the support rollers adjacent to each other in the circumferential direction are alternately arranged in the pipe axial direction with the support plate interposed therebetween, the support rollers adjacent to each other in the circumferential direction are connected to each other in the circumferential direction. It can arrange | position so that parts may overlap in the said circumferential direction. In this case, it becomes possible to make the above-mentioned operation and effect remarkable, and the running of the conveyor belt can be further stabilized.

  Further, as described above, the support rollers adjacent to each other in the circumferential direction can be arranged so that the ends in the circumferential direction overlap with each other in the circumferential direction. It becomes possible to adopt the configuration and the like, and it is possible to easily secure the degree of freedom in designing the belt support device.

  According to the pipe conveyor of the present invention, it is possible to easily maintain the contact between the support roller of the belt support device and the pipe-shaped portion of the conveyor belt.

1 is an overall view of a pipe conveyor according to an embodiment of the present invention. It is a top view by the side of the driven drum of the pipe conveyor shown in FIG. It is a front view of the principal part of the belt support apparatus with which the pipe conveyor shown in FIG. 1 was equipped. It is a side view of the principal part of the belt support apparatus shown in FIG. It is a front view of the principal part of the belt support apparatus with which the pipe conveyor shown in FIG. 1 was equipped.

Hereinafter, a pipe conveyor according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a pipe conveyor 1 is wound between a driving drum 3 and a driven drum 4 that rotate about axes parallel to each other, and between the driving drum 3 and the driven drum 4, and a part thereof is in a pipe shape. A rounded endless belt-like conveyor belt 2 and a belt support device 10 for supporting a pipe-like portion 2A of the conveyor belt 2 that is rounded into a pipe shape are provided.

Each axis of the drive drum 3 and the driven drum 4 extends in the belt width direction of the conveyor belt 2 and is shifted in the horizontal direction.
The conveyor belt 2 travels from the driven drum 4 toward the driving drum 3 and returns to the carrier side whose surface faces vertically upward, and travels from the driving drum 3 toward the driven drum 4 and its surface faces vertically downward. The pipe axes 2A of the carrier-side conveyor belt 2 and the pipe-shaped portions 2A of the return-side conveyor belt 2 are parallel to each other. The conveyor belt 2 is flattened before the driving drum 3 and the driven drum 4 and wound around the drums 3 and 4.

  A plurality of belt support devices 10 are arranged between the drive drum 3 and the driven drum 4 at intervals in the direction of the pipe axis O1 of the pipe-shaped portion 2A. In this embodiment, all the belt support devices 10 are arranged. Are connected to each other via a connecting member 5 extending in the direction of the pipe axis O1. The belt support device 10 includes a support frame 11 that is internally partitioned into an upper chamber 11a and a lower chamber 11b, and the pipe-shaped portion 2A of the carrier-side conveyor belt 2 passes through the upper chamber 11a of each support frame 11. At the same time, the pipe-like portion 2A of the return side conveyor belt 2 passes through the lower chamber 11b.

  Here, as shown in FIG. 2, the conveyor belt 2 that is flatly spread between the belt support device 10 positioned closest to the driven drum 4 and the driven drum 4 among the plurality of belt support devices 10. A belt rounding device 6 for rounding is provided. The belt rounding device 6 gradually rounds the conveyor belt 2 by curving the both end portions 2b of the conveyor belt 2 inward in the belt width direction as the conveyor belt 2 moves from the driven drum 4 to the belt support device 10 side. The conveyor belt 2 is guided to the upper chamber 11 a of the belt support device 10.

  Further, above the driven drum 4, a hopper 7 is provided for dropping a transported object A such as a granular material onto the surface of the conveyor belt 2. In the present embodiment, the hopper 7 drops the conveyed object A onto the surface of the carrier-side conveyor belt 2 that is rounded by the belt rounding device 6 before the conveyor belt 2 is completely rounded. The conveyed object A is wrapped in the conveyor belt 2 when the conveyor belt 2 is rounded by the belt rounding device 6.

Further, as shown in FIG. 1, the rolled conveyor belt 2 is flattened between the belt support device 10 located closest to the drive drum 3 and the drive drum 3 among the plurality of belt support devices 10. A belt unfolding device (not shown) for unfolding is disposed. The belt developing device gradually moves the carrier-side conveyor belt 2 that has passed through the upper chamber 11a of the support frame 11 in the belt support device 10 positioned closest to the drive drum 3 from the belt support device 10 side toward the driven drum 4. , Unfold flat.
On the drive drum 3 side, a receiving box 8 into which the object A to be conveyed conveyed by the carrier-side conveyor belt 2 is placed is provided.

Here, the circulating travel of the conveyor belt 2 in the pipe conveyor 1 will be described.
First, as shown in FIG. 2, the conveyor belt 2 that is flatly developed and passes through the driven drum 4 from the lower side to the upper side is gradually rounded by the belt rounding device 6 toward the belt support device 10 side. At this time, the conveyed object A is dropped from the hopper 7 onto the surface of the conveyor belt 2 before the conveyor belt 2 is completely rounded.

  Next, the conveyor belt 2 enters the upper chamber 11a of the support frame 11 in the belt support device 10 that is located closest to the driven drum 4 among the plurality of belt support devices 10, and both end portions 2b of the conveyor belt 2 are located upward. And then rolled into a pipe shape. As a result, the object A to be conveyed is wrapped inside the conveyor belt 2, and then the pipe-shaped conveyor belt 2 that encloses the object A to be conveyed keeps the upper chamber 11 a of the belt support device 10 in a pipe shape. Pass through as it is.

As shown in FIG. 1, the conveyor belt 2 that has passed through the upper chamber 11a of the support frame 11 in the belt support device 10 located closest to the drive drum 3 in the belt support device 10 is driven by the belt unfolding device. After being gradually expanded toward the side 3, the transported object A is put into the receiving box 8.
The return-side conveyor belt 2 that has passed through the drive drum 3 from the upper side to the lower side is rolled into a pipe shape, passes through the lower chamber 11b of the support frame 11 in each belt support device 10, and is unfolded flat and driven. Return to the drum 4 and circulate. Here, the conveyor belt 2 on the return side can also be flattened after the conveyor belt 2 is rounded by adopting the same configuration as the belt rounding device 6 and the belt developing device.

Next, as shown in FIG. 3, the upper chamber 11a of the belt support device 10 will be described.
In the present embodiment, the lower chamber 11b of the belt support device 10 has the same configuration as the upper chamber 11a, and thus the description of the lower chamber 11b is omitted.

  In the upper chamber 11a, a plurality of support rollers 13 arranged in the circumferential direction of the pipe-shaped part 2A on the outer side in the radial direction with respect to the pipe-shaped part 2A of the conveyor belt 2, and a passage through which the pipe-shaped part 2A passes. A hole 12a is provided in the direction of the pipe axis O1, and a support plate 12 that supports the support roller 13 so as to be movable in the radial direction is provided.

Here, the passage hole 12 a is coaxial with the pipe-shaped portion 2 </ b> A of the conveyor belt 2. In the following, the direction orthogonal to the pipe axis O1 is referred to as the radial direction, and the direction around the pipe axis O1 is referred to as the circumferential direction.
The front and back surfaces of the support plate 12 intersect the pipe axis O1 direction, and the outer peripheral edge of the support plate 12 is fixed to the support frame 11.

  In a front view of the belt support device 10 as viewed from the direction of the pipe axis O1, the support roller 13 is disposed inside the passage hole 12a and on the same circumference, and the rotation axis O2 of the support roller 13 extends in the circumferential direction. Exist. In the present embodiment, the support rollers 13 are arranged symmetrically with respect to a reference line L extending in the horizontal direction through the pipe axis O1 in the front view.

  The support rollers 13 adjacent to each other in the circumferential direction are alternately arranged in the direction of the pipe axis O1 with the support plate 12 interposed therebetween. Further, the support rollers 13 adjacent to each other in the circumferential direction are arranged so that the ends in the circumferential direction overlap each other in the circumferential direction.

Here, as shown in FIG. 4, the support roller 13 is rotatably supported by a bracket member 14, and the bracket member 14 is fixed to a slide member 15 that slides in a radial direction via a fixing bolt 16. ing.
As shown in FIG. 3, the bracket member 14 is provided at intervals in the circumferential direction, and a pair of roller support portions 17 whose inner ends in the radial direction support the shaft member 13a of the support roller 13 from both ends. , And a connecting portion 18 that connects the outer ends of the roller support portions 17 in the radial direction.

  As shown in FIG. 4, the slide member 15 is disposed between the support plate 12 with a space in the direction of the pipe axis O <b> 1, and the front and back surfaces cross the pipe axis O <b> 1 direction and extend in the radial direction. The connecting portion 18 of the bracket member 14 is disposed on the radially inner end of the slide member 15. In addition, the radially outer end of the slide member 15 is bent toward the support plate 12 and supported by a guide member 19 provided on the support plate 12 so as to be slidable in the radial direction.

  As shown in FIGS. 3 and 4, the head 16 a of the fixing bolt 16 is between the nut 20 screwed to the fixing bolt 16 and the connecting portion 18 of the bracket member 14 and the radial direction of the slide member 15. The bracket member 14 and the slide member 15 are fixed by sandwiching the inner end in the direction of the pipe axis O1. Two fixing bolts 16 are arranged on the connecting portion 18 of one bracket member 14 at intervals in the circumferential direction.

  Here, as shown in FIG. 4, the belt support device 10 is provided with an adjusting means 21 for adjusting the inclination angle of the rotation axis O2 of the support roller 13 with respect to the orthogonal surface S orthogonal to the pipe axis O1. The adjusting means 21 applies a correction force from the contact portion of the support roller 13 with the pipe-shaped portion 2A to the pipe-shaped portion 2A in the direction opposite to the direction in which the pipe-shaped portion 2A tends to twist. The inclination angle of the rotation axis O2 of the support roller 13 is adjusted.

In the present embodiment, the adjusting means 21 includes a tapered washer interposed between the connecting portion 18 of the bracket member 14 and the radially inner end of the slide member 15. And, for example, the taper washer is provided on one side of the two fixing bolts 16 provided on the connecting portion 18 of one bracket member 14, thereby adjusting the inclination angle of the rotation shaft O2 of the support roller 13. Has been.
Note that the adjustment unit 21 may adjust the inclination angles of the rotation axes O2 of all the support rollers 13, or may adjust the inclination angles of the rotation axes O2 of some of the support rollers 13.

In this embodiment, all the support rollers 13 are urged inward in the radial direction by the urging means 22. The biasing means 22 biases the radially outer end of the slide member 15 toward the radially inner side, and in the illustrated example, the rod provided on the support plate 12 advances and retracts in the radial direction. It is composed of a cylinder mechanism. The urging means 22 continuously applies a predetermined force to the slide member 15, whereby the support roller 13 presses the pipe-shaped portion 2A, and the radial direction from the support roller 13 to the pipe-shaped portion 2A. A pressing force toward the inside of the is applied.
The belt support device 10 configured as described above supports the pipe-shaped portion 2A by a plurality of support rollers 13 coming into contact with the pipe-shaped portion 2A from the outside in the radial direction.

  As described above, according to the pipe conveyor 1 according to the present embodiment, the support roller 13 is supported so as to be movable in the radial direction, and is urged radially inward by the urging means 22. As shown in FIG. 5, even if the pipe-shaped portion 2A is reduced in diameter due to aging, the support roller 13 moves inward in the radial direction following the reduced diameter of the pipe-shaped portion 2A. It is possible to easily maintain the contact between the support roller 13 and the pipe-shaped portion 2A.

When the pipe-like portion 2A is about to be twisted around the pipe axis O1, the adjusting means 21 adjusts the inclination angle of the rotation shaft O2 of the support roller 13 so that the pipe-like portion 2A of the support roller 13 is By applying the correction force to the pipe-shaped portion 2A from the contact portion, the twist of the pipe-shaped portion 2A can be corrected.
Here, as described above, the pipe conveyor 1 can easily maintain the contact between the support roller 13 and the pipe-shaped portion 2A. Therefore, the correction force is applied from the support roller 13 to the pipe-shaped portion 2A. Even if the pipe-shaped part 2A is reduced in diameter due to secular change, the twist of the pipe-shaped part 2A can be effectively corrected.

Since the twist of the pipe-like portion 2A can be corrected in this way, it is possible to easily maintain the overlap of the side end portions 2b of the conveyor belt 2 that are overlapped with each other in the pipe-like portion 2A. Therefore, it is possible to prevent the inside of the pipe-shaped portion 2A from being released.
Further, as described above, the twist of the pipe-shaped portion 2A can be corrected, so that the side portion 2b of the conveyor belt 2 in the pipe-shaped portion 2A is overlapped with the belt support device 10 of the ear portion 2c. The circumferential position can be stabilized. Accordingly, when the pipe-like portion 2A is developed and flattened in the belt width direction, for example, the pipe-like portion 2A is not completely developed, and the side end portion 2b of the conveyor belt 2 is inward in the belt width direction. The conveyor belt 2 can be prevented from becoming an unexpected shape by being bent, and the pipe-shaped portion 2A can be easily flattened.

  Since the pipe-like portion 2A is easily twisted when traveling while curving, the above-described effects are remarkably achieved.

  Further, since the support rollers 13 adjacent to each other in the circumferential direction are alternately arranged in the direction of the pipe axis O1 with the support plate 12 interposed therebetween, the support rollers 13 adjacent to each other in the circumferential direction are connected to the pipe-shaped portion 2A. Even if it moves toward the inner side in the radial direction following the reduced diameter, the movements are not buffered. Therefore, these support rollers 13 can be arranged close to each other in the circumferential direction.

  Thus, since the support rollers 13 adjacent in the circumferential direction can be arranged close to each other in the circumferential direction, the traveling of the conveyor belt 2 can be stabilized. That is, when the interval between the support rollers 13 is widened, the side end portions 2b of the conveyor belt 2 overlapped with each other in the pipe-shaped portion 2A are likely to enter the interval, which affects the running of the conveyor belt 2. There is a risk of giving.

  Further, since the support rollers 13 adjacent to each other in the circumferential direction are alternately arranged in the direction of the pipe axis O1 with the support plate 12 interposed therebetween, the support rollers 13 adjacent to each other in the circumferential direction as in the present embodiment. Can be arranged such that the ends in the circumferential direction overlap each other in the circumferential direction. In this case, it becomes possible to make the above-mentioned operation and effect remarkable, and the circulation traveling of the conveyor belt 2 can be further stabilized.

  Further, as described above, the support rollers 13 that are adjacent to each other in the circumferential direction can be arranged so that the ends in the circumferential direction overlap with each other in the circumferential direction. It becomes possible to adopt the above, and the degree of freedom in designing the belt support device 10 can be easily secured.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the support rollers 13 adjacent in the circumferential direction are alternately arranged in the direction of the pipe axis O1 with the support plate 12 interposed therebetween, but the present invention is not limited to this.

  Moreover, in the said embodiment, although the said biasing means 22 shall be provided in all the support rollers 13, it is not restricted to this. For example, among the plurality of support rollers 13, the support roller 13 is provided on the support roller 13 that is separated from the pipe-shaped portion 2 </ b> A when the diameter of the pipe-shaped portion 2 </ b> A is reduced, or is positioned vertically above the reference line L. It may be provided on the roller 13 or may be provided on an arbitrary support roller 13. The urging means 22 is preferably provided so that all the support rollers 13 come into contact with the pipe-shaped part 2A when the diameter of the pipe-shaped part 2A is reduced.

  In the above embodiment, a cylinder mechanism is employed as the urging means 22. However, the cylinder mechanism may be driven by, for example, hydraulic pressure or air pressure, and may urge the support roller 13 radially inward. If necessary, the configuration can be changed as appropriate. For example, the biasing means 22 may be configured to bias the support roller 13 using the elastic force of an elastic body such as a spring or gravity.

Moreover, in the said embodiment, although the adjustment means 21 shall be comprised by the taper washer, if it is the structure which adjusts the said inclination angle, it will not be restricted to this. For example, the adjustment means may be configured to adjust the inclination angle of the rotation axis of the support roller by rotating the support plate around a rotation axis perpendicular to the pipe axis direction of the conveyor belt.
Further, the adjusting means 21 may be omitted.

  In the above embodiment, the support plate 12 is provided. However, if the support roller is supported so as to be movable in the radial direction and is urged radially inward by the urging means, the support plate 12 is provided. Is not necessary. For example, the biasing means may be a cylinder mechanism that is fixed to the support frame and the rod advances and retracts in the radial direction, and the support roller is fixed to the tip of the rod of the biasing means via a bracket member. Good.

  Moreover, in the said embodiment, although the conveyor belt 2 shall be the structure rounded by the both sides of a carrier side and a return side, if a part is rounded by the pipe shape, it will not be restricted to this, For example, It may be flattened or ridged on the carrier side and rounded into a pipe on the return side.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Pipe conveyor 2 Conveyor belt 2A Pipe-shaped part 10 Belt support apparatus 12 Support plate 12a Passing hole 13 Support roller 21 Adjustment means 22 Energizing means O1 Pipe axis O2 Rotation axis

Claims (3)

An endless belt-shaped conveyor belt partially rolled into a pipe,
A belt support device that supports a pipe-shaped portion of the conveyor belt that has been rolled into a pipe;
The belt support device includes a plurality of support rollers arranged in the circumferential direction of the pipe-shaped portion on the outer side in the radial direction with respect to the pipe-shaped portion. A pipe conveyor that supports the pipe-like portion by abutting from the outside in the direction,
The pipe conveyor, wherein the support roller is supported so as to be movable in the radial direction, and is biased inward in the radial direction by a biasing means. The pipe conveyor according to claim 1,
The said belt support apparatus is equipped with the adjustment means which adjusts the inclination-angle of the rotating shaft of the said support roller with respect to the orthogonal surface orthogonal to a pipe axis, The pipe conveyor characterized by the above-mentioned. The pipe conveyor according to claim 1 or 2,
The belt support device includes a support plate in which a passage hole through which the pipe-shaped portion passes is provided in the pipe axial direction and supports the support roller movably in the radial direction,
The pipe conveyor, wherein the support rollers adjacent to each other in the circumferential direction are alternately arranged in the pipe axial direction with the support plate interposed therebetween.

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