JP3842728B2 - Centering return roller device and belt conveyor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a belt conveyor hollow roller device arranged on the return side of a conveyor belt and a belt conveyor using the device.
[0002]
[Prior art]
Conventionally, a belt conveyor as an article conveying device, especially when conveying loose objects including small particles such as ore and coal, mainly in the retan side line, environmental pollution accompanying falling and scattering of deposits adhering to the lower surface of the retan belt. In order to prevent this, a method of washing the belt with water on the retan side, a method of reversing the retan belt immediately after passing through the belt pulley, and re-reversing immediately before the loading section pulley are performed.
[0003]
However, both require high manufacturing costs and are suitable for large-scale conveyor lines. However, a simple cleaning device for preventing environmental contamination based on the scattering of the above deposits has not been developed yet. .
[0004]
On the other hand, a so-called hollowed-out return roller having a configuration in which a return roller for moving the return belt is divided into right and left to prevent scattering of deposits on the lower surface of the return belt has already been filed (Patent Documents 1 and 2).
[Patent Document 1]
Japanese Utility Model Publication No. 57-71125 [Patent Document 2]
Japanese Utility Model Publication No. 4-12407 [0005]
[Problems to be solved by the invention]
By the way, since the return roller support shafts of Patent Documents 1 and 2 are straight, the lower surface of the belt comes into contact with the support shaft due to the slack of the center portion of the return belt, and thus the scattered matter is still scattered. It was.
[0006]
In addition, when the return roller of Patent Documents 1 and 2 is used for a long period of time with the lower surface of the return belt in contact with the return roller support shaft, there is also a problem that the return belt support shaft is worn by the contact.
[0007]
Further, in the retan roller as in the literatures 1 and 2, due to the slack of the retan belt, the opposed peripheral edge portions of the left and right retan rollers are worn, and the slack of the retan belt is promoted.
[0008]
In addition, Patent Documents 1 and 2 do not disclose a technical idea for cleaning the back surface of the return belt.
[0009]
In such a conventional belt conveyor, there is a strong demand for a measure for preventing environmental pollution caused by dropping, scattering, and the like of deposits on the back surface of the Ritan belt by a simple method.
[0010]
The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a hollow retan roller apparatus that can prevent scattering of deposits and the like on the bottom surface of the retan belt with a simple structure and prevent environmental pollution. To do.
[0011]
It is another object of the present invention to provide a hollow cylinder return roller device with a cleaning function having a simple configuration that can be installed in a suitable line on the return side and prevent environmental pollution.
[0012]
It is another object of the present invention to provide a belt conveyor that includes such a hollow-out return roller device and that can prevent environmental contamination.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention
First, it is a belt-removal hollow return roller device in which return rollers divided into left and right are connected by a return roller support shaft, and the center portion of the return roller support shaft is suspended downward from the return roller shaft so that the center portion This is constituted by a hollow return roller device characterized in that a hanging portion is formed.
[0014]
In this way, by forming the hanging portion (13a) that hangs downward from the return roller shaft (11) at the center of the return roller roller shaft (13), the bottom surface of the return belt (14) and the return roller support shaft (13) are brought into contact with each other. This can prevent the deposits from scattering and the like, and can also prevent the return roller support shaft (13) from being worn.
[0015]
Secondly, two hollow return roller rollers are arranged close to each other so that both the return roller rollers can be rotated in the same direction by following the progress of the return belt, and the drive rollers are joined to both the return roller rollers. Is configured to be able to rotate in the opposite direction to both of the return rollers based on the rotation of the return roller, and is configured to support the brush roller on the drive roller so that the brush roller can contact the lower surface of the return belt. It is comprised by the hollow return roller apparatus with a cleaning function characterized by being.
[0016]
By disposing the hollow return roller device with the cleaning function at an appropriate position on the return side of the belt conveyor, the brushed roller (21) can remove deposits on the lower surface of the return belt (14). The deposit on the lower surface of the return belt can be effectively removed at a place (for example, one place) where the return roller device is installed.
[0017]
Thirdly, in the hollow return roller apparatus with a cleaning function according to the second aspect, the hollow return roller is configured such that a central portion of the return roller support shaft is suspended downward from the return roller shaft, whereby a hanging portion is formed at the central portion. It is formed by a hollow return roller device with a cleaning function.
[0018]
Fourthly, the hanging portion is formed by the hollow return roller device according to the first or third aspect, characterized in that the hanging portion is substantially U-shaped or substantially V-shaped.
[0019]
Fifth, the drooping portion is formed in a curved line shape, and is constituted by the hollow return roller device described in the first or third aspect.
[0020]
Sixth, the first, third, third, or the like, characterized in that there is a relationship of “K / h ≦ 30” between the hanging distance h of the hanging portion and the length K of the return roller support shaft. It is comprised by the hollow return roller apparatus in any one of 4 or 5.
[0021]
Further, it is preferable that a relationship of “3 ≦ K / h ≦ 30” is established between the hanging distance h and the length K of the return roller support shaft.
[0022]
Seventh, the first, third, fourth, and the like characterized in that there is a relationship of “W / K ≧ 1.2” between the width W of the return belt and the length K of the return roller support shaft. It is comprised by the hollow return roller apparatus as described in any of 5 or 6.
[0023]
Further, it is preferable that a relationship of “3 ≧ W / K ≧ 1.2” is established between the width W of the return belt and the length K of the return roller support shaft.
[0024]
Eighth, the hollow return roller apparatus according to any one of the first to seventh aspects, wherein a wear prevention process having a predetermined width is applied to a peripheral edge of the left and right return roller on the center side of the return belt. It is composed.
[0025]
If comprised in this way, abrasion of the said return roller front-end | tip peripheral part (10a) by a return belt can be prevented. The peripheral edge portion of the tip includes a portion having a predetermined width from the tip of the return roller, and a belt-like portion having a predetermined width from the tip.
[0026]
Ninth, the wear prevention processing is a ceramic lining, and is constituted by the hollow return roller apparatus according to the eighth aspect.
[0027]
In addition, the anti-wearing process can be induction hardening or lining with a polymer resin.
[0028]
Tenth, a recirculation roller is provided with a recirculation roller divided by left and right and connected by a recirculation roller support shaft, and a recirculation roller device with a cleaning function for removing deposits on the bottom surface of the retan belt is disposed at a suitable position on the retan side line. A belt conveyor, wherein the hollow return roller is configured by a hollow return roller device in which a central portion of the support shaft is suspended below the return roller shaft to form a hanging portion at the central portion, and the cleaning function is provided. The hollow-out retan roller device includes two adjacent hollow-out retan rollers that can rotate in the same direction as the re-tan belt advances, and is joined to both hollow-out re-tan rollers and rotates in the opposite direction to the re-tan roller. A drive roller and a shaft supported by the drive roller and capable of contacting the lower surface of the return belt. It is formed using a belt conveyor, characterized in that is obtained constituted by a brush roller.
[0029]
According to such a belt conveyor, it is possible to prevent the deposits on the lower surface of the retan belt from being scattered by the above-mentioned hollow retan roller device on the retan side, and the retan belt at the corresponding location by the retan roller device having a cleaning function at a suitable line on the retan side. Since the deposits on the lower surface can be removed, environmental pollution due to the fall or scattering of the deposits can be effectively prevented.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0031]
FIG. 1 shows an embodiment of a return roller apparatus according to the present invention. In the figure, 1 is a belt conveyor, and a pair of upright angles 3 and 3 are provided on the upper left and right sides of the portal machine frame 2, and support angles 4 and 4 are provided on the upper surface of the central part of the machine frame 2, Inclined carrier rollers 5 and 5 inclined in the center of the conveyor are pivoted between the standing angles 3 and 3 and the support angles 4 and 4, and a horizontal carrier roller 5 ′ is supported between the support angles 4 and 4. It is pivotally supported.
[0032]
Reference numeral 6 denotes a carrier belt that travels on each of the rollers, and the left and right belts are inclined along the rollers 5 and 5 toward the inside of the conveyor.
[0033]
Reference numeral 7 denotes a hollow return roller device according to the present invention. The front and rear direction angles 8 and 8 supported by the left and right support columns 1a and 1a of the machine frame 1 have roller shaft support angles 9 and 9 having upper ends thereof. The return rollers 10, 10 are pivotally supported by return roller shafts 11, 11 at the lower ends of the support angles 9, 9.
[0034]
As shown in FIG. 2, the return roller shaft 11 is horizontally supported with one end 11a fixed to the roller shaft support angle 9, and the return roller 10 is respectively attached to the left and right ends of the roller. The bearings 12 are provided so as to be pivotable. In the bearing 12, 12 a is a bearing housing, 12 b is a bearing cover, 12 c is a bearing labyrinth, 12 d is a ball bearing, and in the return roller 10, 10 b is a rubber ring mounted on the outer periphery of the return roller 10.
[0035]
The other end 11b of the return roller shaft 11 protrudes from one end of the return roller 10 on the conveyor center side, and a hollow return roller support shaft 13 is inserted and fixed to the other end 11b. Note that FIG. 2 shows only the one-side return roller 10, but the other-side return roller 10 also has a symmetrical structure. As shown in FIG. 1, the return roller shafts 11 and 11 may be attached in a state where a slight inclination angle is provided slightly from the center of the conveyor from the horizontal position, and the return roller rollers 10 and 10 are slightly inclined downward toward the center of the conveyor. In this way, meandering of the return belt 14 can be effectively prevented.
[0036]
14 is a return belt, and the carrier belt 6 is reversed and unloaded downward by a pulley roller (not shown) at the end of the conveyor, and proceeds on the return rollers 10 and 10 in the opposite direction to the carrier belt 6.
[0037]
As shown in FIG. 1, the return roller support shaft 13 is fixed to the return roller shaft 11, and has a substantially U-shaped hanging portion 13 a that hangs downward from the return roller shaft 11. Yes. Here, the straight portions of the return roller support shaft 13 other than the hanging portion 13a are referred to as both-side straight portions 13b and 13b. The hanging distance h [mm] of the hanging portion 13a (see FIG. 3, the distance from the straight line a connecting the rotation centers p and p on the conveyor center side of the returning rollers 10 and 10 to the lower end of the hanging portion 13a) , 10 even if the central portion of the return belt 14 is slackened downward, the lower surface of the belt 14 is set to a distance that does not contact the upper portion of the hanging portion 13a of the return roller support shaft 13.
[0038]
That is, the hanging distance h of the hanging portion 13a is set to a distance such that K / h is 30 or less with respect to the distance K of the returning roller supporting shaft 13 when the distance of the returning roller supporting shaft 13 is K [mm]. Is preferable (see Formula (1)).
K / h ≦ 30 ・ ・ ・ ・ ▲ 1 ▼
The relationship between the drooping distance h and the distance K is preferably set as shown in the equation (1).
3 ≦ K / h ≦ 30 (1)
By setting such a hanging distance h, it is possible to effectively prevent the slack of the central portion of the return belt 13 from contacting the hanging portion 13a.
[0039]
Further, when the width of the return belt 14 is W [mm], the width W is preferably designed to be 1.2 times or more the distance K of the return roller support shaft 13 (see Formula (2)).
W / K ≧ 1.2 (2)
Further, the relationship between the width W and the distance K is preferably set as shown in equation (2) '.
3 ≧ W / K ≧ 1.2 (2)
That is, both end portions of the return belt 14 must be present on the return roller 10, 10, and by satisfying the expression (2) or (2), it is possible to prevent the return belt 14 from slacking more than necessary, The lower surface of the belt 14 can be prevented from contacting the return roller support shaft 13.
[0040]
5A to 5C show another embodiment. The hanging portion 13a of the return roller support shaft 13 is not limited to the U-shape, but a V-shape having a bent portion at the center as shown in FIG. It may be formed in a curved U shape. Further, the left-right direction distance k ′ of the hanging portion of the return roller support shaft 13 may be provided in a substantially entire region of the support shaft 13 by curving immediately downward from the straight portions 13b and 13b as shown in FIG. The drooping portion 13a may be formed shorter as shown in FIG.
[0041]
The tip peripheral edge portion 10a on the conveyor center side of the return rollers 10 and 10 (see FIG. 2) is subjected to anti-wear processing by applying an anti-wear ceramic lining 15 within a certain width t. . That is, the peripheral edge portion 10a near the conveyor center of the return rollers 10 and 10 receives a strong surface pressure due to the slack of the return belt 14, and therefore, a lining 15 made of a metal with high wear resistance, such as ceramic, is applied to the portion 10a. Thus, abnormal wear of the tip peripheral edge portion 10a is prevented. The ceramic lining 15 may be applied with a constant width t from the tip peripheral portion 10a as shown in FIG. 2 (FIG. 4A), or the tip peripheral portion 10a as shown in FIG. 4B. It may be provided in a strip shape at a slight distance from.
[0042]
Further, in place of the ceramic lining 15, the hardness of the portion 10a may be increased by performing a quenching process or an induction quenching process in a range of a predetermined width from the peripheral edge part 10a. You may give wear prevention processing, such as polymer lining by.
[0043]
By performing such wear prevention processing, it is possible to prevent abnormal wear of the peripheral edge portion 10a near the center of the conveyor of the return roller 10, 10.
[0044]
FIG. 6 shows a hollow return roller device 25 with a cleaning function according to the present invention. In the belt conveyor according to the present invention, the return roller device 25 is provided at a predetermined position on the return belt side, and the deposit on the lower surface of the return belt 14 is shown. Is intensively removed at the location to prevent the deposits from scattering.
[0045]
In the figure, reference numeral 16 denotes a roller support plate, which is formed with horizontal grooves 16a and 16a 'for supporting the return roller shaft 11 at the front and rear side edges, and a vertical groove 16b at the lower side edge. A support protrusion 16c on the upper edge is fixed at a predetermined position in the front-rear direction angle 8, 8 of the return belt side conveyor machine frame 1. In the horizontal grooves 16a and 16a ′, the return rollers 10 and 10 are pivotally supported by the return roller shafts 11 and 11, and the vertical grooves 16b are formed at one end of the brush roller 21. The support shaft 18 of the drive roller 17 with the rubber ring 17a is supported. The diameter of the drive roller 17 is larger than that of the return rollers 10 and 10.
[0046]
Both the return roller shafts 11 and 11 are always urged in opposite directions (in the directions of arrows B and B 'in FIG. 4) by springs 19 and 19 fixed to the support plate 16 at appropriate positions 19a and 19a, respectively. One end of the support shaft 18 of the drive roller 17 is always urged upward (in the direction of arrow C) by a spring 20 fixed to the appropriate position 20a of the support plate 16, so that the drive roller 17 always has both return rollers. 10 and 10 so as to keep the state of being joined (contacted in a crimped state). Thus, by using the rubber ring 17a on the outer periphery of the drive roller 17, the coefficient of friction with the surface of the adjacent return roller 10 or 10 can be increased to increase the drive transmission efficiency.
[0047]
As shown in FIG. 6 (a), the drive roller 17 is disposed between the side edge 14a of the return belt 14 traveling on the return rollers 10 and 10 and the support plate 16, and the drive roller 17 The return belt 14 is configured so as not to be positioned on the belt 17.
[0048]
A brush roller 21 that contacts the lower surface of the return belt 14 is supported on the support shaft 18 of the drive roller 17, and the brush roller 21 is positioned over substantially the entire lateral width of the lower surface of the return belt 14. It is configured as follows. The brush roller 21 has a single helical brush 22 formed by, for example, polypropylene brush protrusions 22a standing on the surface of the cylindrical main body 21a in a spiral shape in the longitudinal direction of the main body 21a. A plurality of such helical brushes 22 are formed on the surface of the main body 21a. FIG. 6 shows only one side of the return roller device 25, but the other side also has a symmetrical structure.
[0049]
Accordingly, when the return belt 14 advances in the direction of the arrow B ′, the return roller 10, 10 rotates in the same direction in the direction of the arrow b in FIG. The drive roller 17 is rotationally driven in the opposite direction (arrow d direction) to the two return rollers 10 and 10. Thus, the brush roller 21 can be rotated in the direction opposite to the traveling direction of the return belt 14, and the adhered matter on the lower surface of the roller 14 is removed by the helical brush 22 that contacts the lower surface of the roller 14.
[0050]
Since the diameter of the drive roller 17 is larger than the diameter of the return roller 10, 10 in contact, the rotational speed of the brush roller 21 is lower than the rotational speed of the return roller 10, 10. 17 and the reverse rotation direction (arrow B ′ direction) of the Ritan belt 14 in the opposite direction (arrow d direction), and has a strong brushing ability against the frictional force between the belt 14 and the brush 22, It is also possible to extend the life of the brush. The brush roller 21 is preferably configured to be detachable from the drive roller 17 and exchangeable.
[0051]
Moreover, it is preferable to provide the hanging part 13a of FIG. 1, FIG. 5 (a)-(c) etc. also in the return roller support shaft 13 of the return roller apparatus 25 with a cleaning function. Further, it is preferable to apply the wear prevention processing 15 such as the ceramic lining to the peripheral edge portion 10a of the return roller 10 or 10 of the return roller device 25 with the cleaning function.
[0052]
Since the present invention is configured as described above, the return roller of the belt conveyor 1 is the return belt device 7 having the hanging portion 13a according to the present invention, and the return belt 14 side appropriate place (for example, one place or a plurality of places) The above-described return belt device 25 with a cleaning function is installed. In the belt conveyor configured in this way, when the return belt 14 advances, the central portion of the belt conveyor is slightly slacked downward (see the dashed line in FIG. 1), but the hanging portion 13a is formed on the return roller support shaft 13, The lower surface of the belt 14 does not come into contact with the return roller support shaft 13, thereby preventing wear of the support shaft 13 or damage of the support shaft 13 due to wear.
[0053]
Further, since the contact between the return roller support shaft 13 and the lower surface of the return belt 14 can be prevented, it is possible to prevent the adhered matter on the lower surface of the return belt 14 from falling and scattering due to the contact.
[0054]
In the return belt device 25 with the cleaning function, when the return belt 14 advances in the direction of the arrow B ′, the return roller 10, 10 is driven by the belt 14 and rotates in the direction of the arrow b. The brush roller rotates in the direction of arrow d. Since the rotation direction of the brush roller is opposite to the traveling direction of the return belt 14, deposits on the lower surface of the belt 14 can be effectively removed by the helical brush 22 that contacts the lower surface of the belt 14. Therefore, by providing the hollow return roller device 25 with the cleaning function at an appropriate place (one place or a plurality of places) on the belt conveyor line, the deposits on the lower surface of the return belt 14 can be removed intensively at the place where the equipment is installed. And the deposits can be effectively prevented from scattering.
[0055]
Further, since the hollow return roller device 25 with the cleaning function does not require external power, it is possible to effectively remove the deposit on the lower surface of the return belt 14 while having a simple structure.
[0056]
Further, since the anti-wearing process (15) is applied to the return roller 10, it is possible to prevent abnormal wear of the tip peripheral edge portion 10a of the return roller 10 and realize a return roller device having a long life.
[0057]
Further, since the wear of the leading edge portion 10a of the return roller can be prevented, it is possible to effectively prevent the deposits on the lower surface of the belt from falling and scattering without promoting the slack of the return belt 14.
[0058]
Further, since the entire apparatus can be realized at low cost, a return belt apparatus particularly suitable for a belt conveyor having a short length can be realized.
[0059]
【The invention's effect】
As described above, according to the present invention, it is possible to realize a hollow retan roller device that can effectively prevent the fall and scattering of deposits on the bottom surface of the retan belt with a simple structure and can prevent environmental pollution. is there.
[0060]
Further, it is possible to realize a hollow retan roller device with a cleaning function that can intensively remove deposits on the lower surface of the retan belt with a simple structure and can prevent environmental pollution.
[0061]
In addition, it is possible to realize an economical and effective environmental pollution control belt conveyor that is optimal for a short length belt conveyor, for example.
[Brief description of the drawings]
FIG. 1 is a cross-sectional front view of a belt conveyor using a hollow return roller device according to the present invention.
FIG. 2 is a front sectional view of one return roller of the same return roller apparatus.
FIGS. 3A and 3B are front views of the same return roller device.
FIGS. 4A and 4B are front views of one return roller of the return roller apparatus of the same.
FIGS. 5A to 5C are front views of the return roller apparatus of the same.
6A is a plan view of one return roller side of a hollow return roller device with a cleaning function, and FIG. 6B is a side view of the same device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Belt conveyor 7 Hollow-out return roller apparatus 10 Return roller 10a Tip peripheral part 11 Return roller shaft 13 Return roller support shaft 13a Hanging part 14 Return belt 15 Lining 17 Drive roller 21 Brush roller

Claims (9)

It is a belt conveyor hollowing retan roller device in which retan rollers divided and arranged on the left and right are connected by a retan roller support shaft,
A hollow retan roller apparatus characterized in that a hanging portion is formed in the central portion by hanging a central portion of the return roller support shaft downward from the return roller shaft. Two hollow hollow return rollers are arranged close to each other, and are configured to be able to rotate both the return roller in the same direction by following the progress of the return belt.
A drive roller is joined to both the return rollers, and the drive roller is configured to be able to rotate in a direction opposite to the both return rollers based on the rotation of the return roller.
A brush roller is pivotally supported on the drive roller, and the brush roller is configured to be in contact with the lower surface of the return belt ,
A hollow retan roller apparatus with a cleaning function, wherein the hollow retan roller has a hanging portion formed at the center by hanging a central portion of the return roller support shaft downward from the retan roller shaft . 3. The hollow return roller apparatus according to claim 1, wherein the hanging portion is substantially U-shaped or substantially V-shaped . 3. The hollow return roller device according to claim 1, wherein the hanging portion is formed in a curved line shape . The relationship of "K / h≤30" is established between the hanging distance h of the hanging portion and the length K of the return roller support shaft. The hollow return roller apparatus according to any one of the above . The width W of the return belt and the length K of the return roller support shaft have a relationship of “W / K ≧ 1.2”. The hollow return roller apparatus according to any one of the above . The hollow return roller apparatus according to any one of claims 1 to 6, wherein a wear preventing process having a predetermined width is applied to a peripheral edge portion of a center side of the return belt of the left and right return rollers. 8. The hollow return roller apparatus according to claim 7, wherein the wear preventing process is a ceramic lining . The belt conveyor is provided with a hollow return roller that is connected to the left and right return roller by a return roller support shaft, and a hollow return roller device with a cleaning function that removes deposits on the lower surface of the return belt at an appropriate position on the return side line. And
  The hollow return roller is constituted by a hollow return roller device in which a central portion of the support shaft is suspended below the return roller shaft to form a hanging portion at the central portion.
  The hollow retan roller device with the cleaning function is composed of two hollow retan rollers arranged close to each other, which can be rotated in the same direction as the retan belt advances, and is opposite to the retan roller as joined to both hollow retan rollers. A belt conveyor comprising: a driving roller that rotates in a direction; and a brush roller that is pivotally supported by the driving roller and can contact the lower surface of the return belt.

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