JP6959410B1 - Belt cleaning structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt cleaning structure capable of reliably removing a part of an object to be transported such as slag adhering to a conveyor belt. SOLUTION: A drive pulley 2 is arranged below and behind a head pulley 1 to form a rearward tilting tension receiving region Y in which a conveyor belt 5 receives tension between the head pulley 1 and the drive pulley 2. Then, the cleaner Zy is arranged in the rearward tilting tension receiving region Y. [Selection diagram] Fig. 2

Description

The present invention relates to a belt cleaning structure.

Traditionally, slag (steel slag) generated when metal is smelted from ore, slag (molten slag) obtained by melting garbage and its incineration ash, and (so-called) roses such as crushed stone, gravel, coke, and sand. Items to be transported such as things and other dust are transported by a conveyor belt.

By the way, in the conveyor belt that feeds various kinds of objects to be transported, a part of the objects to be transported adheres to the conveyor belt, and the conveyor belt does not easily separate, and falls and accumulates on the lower part of the belt on the return side. A lot of time was spent removing this deposit. Further, there is a problem that the return roller is damaged at an early stage.
Therefore, conventionally, a belt cleaning device as shown in FIG. 11 or 12 has been proposed. (See Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2015-182847 Japanese Unexamined Patent Publication No. 2012-51653

FIG. 11 shows a belt cleaning device proposed in Patent Document 1, which is suspended between a tail pulley 61 and a head pulley 62 and transports an object to be transported 64 in the direction of arrow 63. The belt cleaners 65 and 65 of the above are arranged in the lower portion of the return side belt portion 67 of the endless belt 66. A large number of return rollers 68 are provided to support and guide the return side belt portion 67.

The belt cleaner 65 has a straightening roller and a blade 69, and in FIG. 11, the belt cleaner 65 has a configuration in which the deposits adhering to the lower surface of the return side belt portion 67 are removed by the blade 69.
However, the tension of the return side belt portion 67 is small, and the belt portion 67 easily escapes upward due to the upward pressing force of the blade 69 of the belt cleaner 65, and the blade 69 sufficiently removes the deposits. In some cases, it could not be removed.

Further, FIG. 12 shows the belt cleaning device proposed in Patent Document 2, in which the belt cleaner 65 rotates the disk-shaped scraping blade 70 while slightly inclining it to the return side near the head pulley 62. Although it is attempted to remove the deposits by applying it to the lower surface of the belt portion 67, the belt portion 67 also easily escapes upward due to the upward pressing force of the blade 70, and the blade 70 sufficiently removes the deposits. Could not be removed.

Therefore, in the present invention, a drive pulley is arranged below and behind the head pulley to form a rearward tilting tension receiving region in which the conveyor belt receives tension between the head pulley and the drive pulley. A cleaner is provided in the rearward tilting tension receiving region, and a part of the object to be transported falls from above onto the back surface of the rearward tilting tension receiving region of the conveyor belt to reach the drive pulley. A partition wall provided in a hanging shape from above and a lower end of the partition wall so as to prevent a falling object formed of a part of the object to be transported from getting caught in the V-shaped groove formed by the back surface and the drive pulley. It is provided with a biting prevention means including a falling object receiving pocket portion attached to the above .
The cleaner disposed in the rearward tilting tension receiving region is composed of two or more types selected from a rubber cleaner, a resin cleaner, and a rotary brush cleaner.
Further, the conveyor belt is suspended on the head pulley so that the conveyor belt winds around the head pulley over a predetermined head pulley center angle and changes direction to reach the rearward downward tilting tension receiving region. The super hard alloy chip cleaner is arranged near the upstream of the rearward tilting tension receiving region so that the tip of the super hard alloy chip cleaner presses the conveyor belt within the range of the center angle of the head pulley. It is installed.

Further, the conveyor belt is suspended from the drive pulley so as to be wound around the drive pulley center angle of 180 ° or more to receive a conveying force, and the drive pulley is tilted backward and downward within the drive pulley center angle. The cemented carbide chip cleaner is arranged in the vicinity of the downstream of the rearward tilting tension receiving region so that the tip of the cemented carbide chip cleaner presses the conveyor belt in the vicinity of the state tension receiving region. ing.
Further, the conveyor belt is suspended from the drive pulley so as to be wound around the drive pulley center angle of 180 ° or more to receive a conveying force, and the conveyor belt is pressed within the drive pulley center angle. A rubber cleaner and / or a brush cleaner is provided so as to.

Further, the head pulley and the drive pulley and the snap pulley and cleaner, obtain Preparations head chute surrounding.

According to the present invention, even if a highly adhesive deposit is attached to the conveyor belt, it can be reliably and strongly removed by the cleaner. In particular, even when slag generated when metal is smelted from ore is attached, the belt does not escape locally against the strong pressing of the cleaner, and therefore the slag can be reliably removed. Along with this, the sediment on the lower part of the return side is drastically reduced. In addition, premature wear and breakage of the return roller can be prevented.

It is a side view which shows the 1st Embodiment of this invention. It is explanatory drawing of the main part structure of 1st Embodiment. It is a side view which shows the 2nd Embodiment of this invention. It is explanatory drawing of the main part composition of the 2nd Embodiment. It is a side view which shows the 3rd Embodiment of this invention. It is explanatory drawing of the main part composition of the 3rd Embodiment. It is a side view which shows the 4th Embodiment of this invention. It is explanatory drawing of the main part composition of 4th Embodiment. It is a simplified cross-sectional view for explaining the composition of a main part. It is a side view which shows an example of a cleaner. It is a simplified configuration explanatory drawing of the conventional example. It is a simplified configuration explanatory drawing of another conventional example.

Hereinafter, the present invention will be described in detail based on the illustrated embodiments.
1 and 2 show a first embodiment of the present invention, and show a left end portion of FIG. 11 and a portion in the vicinity thereof of a conventional example, and a portion corresponding to the portion of FIG.
In FIGS. 1 and 2, 1 is a head pulley and 2 is a drive pulley. The drive pulley 2 is rotated in the direction of _{arrow M 2} by a drive source including an electric motor 3 and a speed reducer. The drive pulley 2 is arranged below and behind the head pulley 1. A snap pulley 4 is provided above the drive pulley 2.

Reference numeral 5 denotes an endless conveyor belt, which is suspended substantially horizontally between a tail pulley (not shown on the right) and a head pulley 1 (FIGS. 1 and 2), which are not shown. Run like. FIG. 9 shows a cross section of the conveyor belt 5, in which the upper conveyor belt is supported by three rollers 8, 9, and 8 and travels forward while maintaining a dish shape so as to receive the object to be conveyed G. Before approaching the head pulley 1, while maintaining the one-character cross section, the belt pulley 1, the drive pulley 2, and the snap pulley 4 are used as the return belt portion 5A to the tail pulley (not shown on the right). It is sent backward while being supported by a large number of return rollers 11.

In the present invention, the direction on the head pulley 1 side when viewed from the tail pulley is referred to as "forward". That is, the direction indicated by the arrow 6 to which the object to be transported G is sent is referred to as "forward".
A drive pulley 2 is arranged below and behind the head pulley 1, and the conveyor belt 5 is formed with a rearward tilting tension receiving region Y that receives tension between the head pulley 1 and the drive pulley 2. NS. The cleaner Zy is arranged in such a rearward tilting tension receiving region Y.

The cleaner Zy arranged in the rearward tilting tension receiving region Y is composed of two or more types selected from a rubber cleaner 21, a resin cleaner 22, and a rotary brush cleaner 23. In the first embodiment shown in FIGS. 1 and 2, the cleaner Zy comprises two rubber cleaners 21 and one resin cleaner 22.

Then, the conveyor belt 5 heads with respect to the head pulley 1 so that the conveyor belt 5 changes _{direction while winding over a predetermined head pulley center angle θ 1} to reach the rearward tilting tension receiving region Y. It is suspended on the pulley 1.

Within the range of the head pulley center angle θ ₁ , the tip 20T of the cemented carbide tip cleaner 20 presses the conveyor belt 5.
That is, the cemented carbide tip cleaner 20 is arranged near the upstream of the rearward downward tilting tension receiving region Y.

As described above, in the first embodiment shown in FIGS. 1 and 2, the head pulley pressing cleaner Z ₁ for applying the pressing force to the head pulley 1 is composed of one cemented carbide tip cleaner 20. Is illustrated.

Further, with reference to FIGS. 1 and 2, the conveyor belt 5 is _{suspended from the drive pulley 2 so as} to wrap around the drive pulley 2 over a drive pulley center angle θ 2 of 180 ° or more, and the conveyor belt 5 is suspended. Receives carrying power.

The cemented carbide tip so that the tip 20T of the cemented carbide tip cleaner 20 presses the conveyor belt 5 within the drive pulley center angle θ _{2 and in the vicinity of the rearward tilting tension receiving region Y.} The cleaner 20 is arranged near the downstream side of the rearward tilting tension receiving region Y.
As described above, in the first embodiment shown in FIGS. 1 and 2, the drive pulley pressing cleaner Z ₂ for applying the pressing force to the drive pulley 2 has at least the cemented carbide tip cleaner 20. show.

By the way, as the drive pulley pressing cleaner Z _2, it is also desirable to further attach a rubber cleaner 21 and / or a brush cleaner 24 as a spare (if necessary) as shown in FIGS. 1 and 2. .. The brush cleaner 24 is a type in which the flocking is not rotated, unlike the rotating brush cleaner.

Then, as shown in FIGS. 1 and 2, a head chute 10 surrounding the above-mentioned head pulley 1, drive pulley 2, snap pulley 4, and cleaners Zy, Z ₁ , and Z _{2 is provided.}
The conveyor belt 5 causes the transported portion G, which is sent in the direction of the arrow 6, to fall from the position of the head pulley 1 and be discharged from the lower opening 10A. At that time, smooth discharge can be performed, and dust and the like can be prevented from scattering to the outside.

Further, in FIG. 2, a part of the object to be conveyed G (see FIG. 9) falls from above onto the back surface 12 of the rearward tilting tension receiving region Y of the conveyor belt 5, and reaches the drive pulley 2. A partition wall 14 hanging from above is provided so as to prevent a falling object formed of a part of the object to be transported G from getting caught in the V-shaped groove portion 13 formed by the back surface 12 of the conveyor belt 5 and the drive pulley 2. A biting prevention means K including a falling object receiving pocket portion 15 and a falling object receiving pocket portion 15 is provided.
The falling object receiving pocket portion 15 is attached near the lower end of the hanging-shaped partition wall 14. It is also desirable to provide the pocket portion 15 so that it can be freely taken out to the outside so that falling objects can be thrown away and cleaned.

Next, FIGS. 3 and 4 show a second embodiment of the present invention. 3 and 4 correspond to FIGS. 1 and 2 of the first embodiment, respectively, and in principle, the same reference numerals have the same configuration. Hereinafter, the different configurations will be mainly described.

As shown in FIGS. 3 and 4, the drive pulley 2 is arranged below and behind the head pulley 1, and the rearward downward tilting tension receiving region Y is formed between the pulleys 1 and 2 (FIGS. 1 and 2). Along with being formed, a cleaner Zy is disposed in this region Y.

However, in the second embodiment shown in FIGS. 3 and 4, the cleaner Zy arranged in this region Y is composed of two types, a rotary brush cleaner 23 and a resin cleaner 22.
Then, the tip 20T of the cemented carbide tip cleaner 20 presses the conveyor belt 5 with respect to the head pulley 1 _{within the range of the head pulley center angle θ 1 (described above), and the head pulley pressing cleaner} Z ₁ is composed of one cemented carbide tip cleaner 20 and is the same as those in FIGS. 1 and 2 described above.

Further, the tip 20T of the cemented carbide tip cleaner 20 presses the conveyor belt 5 within the drive pulley center angle θ _{2 of 180 ° or more and in the vicinity of the rearward downward tilting tension receiving region Y.} The arrangement is also the same as in FIGS. 1 and 2 described above.

Further, as the drive pulley pressing cleaner Z ₂ , in addition to the above-mentioned cemented carbide tip cleaner 20, it is also desirable to attach a rubber cleaner 21 and / or a brush cleaner 24 as a surplus (if necessary). (This point is also the same as in FIGS. 1 and 2).

Further, FIG. 1, similar to FIG. 2, the head pulley 1 and the drive pulley 2 and the snap pulley 4 and the cleaner Zy, the Z _1, Z _2, and surrounds at a head chute 10. Further, the V-shaped groove portion 13 is provided with a biting prevention means K including a partition wall 14 and a pocket portion 15 for preventing a falling object formed of a part of the transported object G from being bitten.

Next, FIGS. 5 and 6 show a third embodiment of the present invention. 5 and 6 correspond to FIGS. 1 and 2 of the first embodiment, respectively, and in principle, the same reference numerals have the same configuration. Hereinafter, the different configurations will be mainly described.
As shown in FIGS. 5 and 6, in the third embodiment, the cleaner Zy of the rearward tilting tension receiving region Y is, in order from the top, a rubber cleaner 21, a resin cleaner 22, and a rubber cleaner. It consists of 21, a resin cleaner 22, and a resin cleaner 22.

In other words, in the third embodiment, the cleaner Zy arranged in the rearward tilting tension receiving region Y includes a plurality of rubber cleaners 21 (different types) and resin cleaners 22 respectively. They are arranged one by one.

Then, the rubber cleaner 21 presses the conveyor belt 5 _{against the head pulley 1} within the range of the head pulley center angle θ 1. That is, the head pulley pressing cleaner Z ₁ is composed of one rubber cleaner 21.
Further, the tip 20T of the cemented carbide tip cleaner 20 presses the conveyor belt 5 within the drive pulley center angle θ _{2 of 180 ° or more and in the vicinity of the rearward downward tilting tension receiving region Y.}

Further, as the drive pulley pressing cleaner Z ₂ , in addition to the above-mentioned cemented carbide tip cleaner 20, it is also desirable to attach a rubber cleaner 21 and / or a brush cleaner 24 as a surplus (if necessary). ..

Further, similarly to the first embodiment and the second embodiment, the head pulley 1, the drive pulley 2, the snap pulley 4, and the cleaners Zy, Z ₁ , and Z ₂ are surrounded by the head chute 10. In addition, a biting prevention means K including a partition wall 14 and a pocket portion 15 for preventing the biting of falling objects is also provided.

Next, FIGS. 7 and 8 show a fourth embodiment of the present invention. 7 and 8 correspond to FIGS. 1 and 2 of the first embodiment, respectively, and mainly different configurations will be described below.
In the fourth embodiment shown in FIGS. 7 and 8, the cleaner Zy of the rearward tilting tension receiving region Y is composed of a rubber cleaner 21, a resin cleaner 22, and a rubber cleaner 21 in this order from the top. ing.

Then, with respect to the head pulley ₁ , the tip 20T of the cemented carbide tip cleaner 20 presses the conveyor belt 5 within the range _{of the head pulley center angle θ 1, and the head pulley pressing cleaner Z 1} presses 1. It consists of 20 cemented carbide tip cleaners.
Further, the resin cleaner 22 presses the conveyor belt 5 in the vicinity of the rearward tilting tension receiving region Y within the drive pulley center angle θ _{2 of 180 ° or more.}

Further, it is desirable to dispose the resin cleaner 22 as the drive pulley pressing cleaner Z ₂ , but in addition to this, a rubber cleaner 21 and a brush cleaner 24 are attached as a surplus (if necessary). It is also desirable to do.
Further, as in the first to third embodiments, the head chute 10 and the biting prevention means K are also provided.

The sealed cover cylinder (casing frame) 26 shown in FIG. 9 surrounds the feed side and the return side of the conveyor belt 5 to prevent a danger when a part of the object to be transported G falls. In this case, the downstream end of the cover cylinder 26 is connected to the head chute 10 shown in FIGS. 1 to 8 (not shown). .. Further, if desired, such a cover cylinder 26 may be omitted in a part or the whole of the conveyor belt traveling path.

By the way, FIG. 10 shows a specific example of the cemented carbide tip cleaner 20, and a plurality of plate pieces 32 are formed on one common shaft 31 so as to be independently swingable around the axis of the shaft 31. It is pivotally attached, and the tip 20T (of the cemented carbide tip cleaner 20) is fixed to the tip of each of the plate pieces 32. Moreover, the arm 33 integrally connected to each plate piece 32 is elastically urged in the arrow M direction by the elastic urging member 34 such as elastic rubber or metal coil spring. Therefore, each plate piece 32 having the chip 20T at the tip is independently swingable, and each of the chips 20T is elastic with respect to the conveyor belt 5 shown in FIGS. 1 to 8. Even if the conveyor belt 5 is pressed and has uneven parts due to adhesion (foreign matter) to the conveyor belt 5, or even if the uneven parts are present due to deformation of the belt itself, the entire width of the conveyor belt 5 is reached. Therefore, the chip 20T is always pressed. Therefore, even if the object to be removed (foreign matter) is attached to any position on the entire width of the conveyor belt 5, it can be removed.

In the present invention, in the description of each embodiment of FIGS. 1 to 8, the number of cemented carbide tip cleaners 20 installed is the tip pivotally attached to the common shaft 31 as described with reference to FIG. A unit consisting of a plurality of plate pieces 32 with 20T is counted as one (one unit). Even if there are a plurality of common shafts 31 and they are arranged in a row on the same axis, they are counted as one (one unit).

Further, the rubber cleaner 21 is made by cutting a rubber plate material having excellent wear resistance, tear resistance, mechanical strength, impact resistance, etc. (in some cases, excellent heat resistance or oil resistance) and cutting a plate piece. It is desirable that the one formed in 1 is fixed with a holding member.
The resin cleaner 22 is made of a resin plate having excellent wear resistance, tear resistance, mechanical strength, impact resistance, non-adhesiveness, such as ultra-high molecular weight polyethylene (UHMW-PE) and MC nylon. As the shape, it is preferable that the shape is fixed by a holding member.

In the present invention, as described in detail above, the drive pulley 2 is arranged below and behind the head pulley 1, and the conveyor belt 5 receives tension between the head pulley 1 and the drive pulley 2. Since the tilted tension receiving region Y is formed and the cleaner Zy is arranged in the rearward tilted tension receiving region Y, even if the cleaner Zy is strongly pressed against the conveyor belt 5, the tension is greatly received. The rearward tilting tension receiving region Y does not bend (does not escape) in the back direction of the belt, and the action / effect of removing the belt deposits by the cleaner Zy can be remarkably improved. In particular, belt deposits such as slag generated when metal is smelted from ore have high adhesion (adhesive force) to the conveyor belt 5, but such high adhesive force (adhesive force) is high. Can be sufficiently removed. Further, since the front surface of the belt portion of the belt portion tilted backward and downward faces the front and downward directions, the once separated deposits fall without reattaching, and the cleaning efficiency is further improved. ..
Further, the length dimension of the rearward tilting tension receiving region Y in the traveling direction is sufficiently large, and many types of cleaners can be installed in large numbers, so that the cleaning efficiency can be further improved.

Further, since the cleaner Zy arranged in the rearward tilting tension receiving region Y is composed of two or more types selected from the rubber cleaner 21, the resin cleaner 22, and the rotary brush cleaner 23, the cleaning efficiency is extremely high. It is good and can sufficiently remove deposits with high adhesion such as slag and deposits with relatively weak adhesion such as crushed stone, gravel, coke and sand.

Further, the conveyor belt 5 is _{wound around the head pulley 1} over a predetermined head pulley center angle θ 1 and changes its direction to reach the rearward tilting tension receiving region Y. Is suspended from the head pulley 1, and the super hard alloy chip cleaner 20 presses the conveyor belt 5 so that the chip 20T of the super hard alloy chip cleaner 20 presses the conveyor belt 5 within the range of the _{head pulley center angle θ 1.} Since it is arranged near the upstream of the rearward tilting tension receiving region Y, even belt deposits such as slag having high adhesive strength (adhesive strength) can be sufficiently scraped off and removed. The large pressing force of the tip 20T of the cemented carbide tip cleaner 20 on the conveyor belt 5 is supported by the head pulley 1 so that the conveyor belt 5 does not escape (from the back surface), and the tip 20T provides adhesive strength. It can reliably remove high belt deposits while scraping them off, demonstrating high cleaning efficiency.

Further, the conveyor belt 5 is _{suspended from the drive pulley 2 so} as to be wound around the drive pulley center angle θ 2 of 180 ° or more to receive a conveying force, and within the _{drive pulley center angle θ 2.} Then, in the vicinity of the rearward downward tilting tension receiving region Y, the superhard alloy chip cleaner 20 is tilted backward and downward so that the chip 20T of the superhard alloy chip cleaner 20 presses the conveyor belt 5. Since the structure is arranged in the vicinity of the downstream side of the state tension receiving region Y, the belt is formed by the chip 20T of the super hard alloy chip cleaner 20 at the traveling location where the maximum tension is generated in the conveyor belt 5. Since the deposits are scraped off, the belt deposits having a large adhesive force (adhesive force) can be reliably removed (at the final position). In particular, the drive pulley 2 prevents the conveyor belt 5 from escaping to the back surface, and more reliable removal of belt deposits is performed.

Further, in the present invention, the conveyor belt 5 is _{suspended from the drive pulley 2 so} as to be wound around the drive pulley center angle θ 2 of 180 ° or more to receive a conveying force, and the drive pulley center angle. Since the rubber cleaner 21 and / or the brush cleaner 24 is arranged so as to press the conveyor belt 5 in _{θ 2, the rubber cleaner is used as a finishing step after the cleaning step of a plurality of stages.} 21 and / or the brush cleaner 24 may be used to finish the work of removing belt deposits.

Further, since the head chute 10 surrounding the head pulley 1, the drive pulley 2, the snap pulley 4, and the cleaners Zy, Z ₁ , and Z ₂ is provided, it is possible to prevent the belt deposits from scattering to the outside and reduce noise. ..

Further, a part of the object to be transported G falls from above onto the back surface 12 of the rearward tilting tension receiving region Y of the conveyor belt 5, reaches the drive pulley 2, and is reached by the back surface 12 and the drive pulley 2. A partition wall 14 provided in a hanging shape from above and attached to the lower end of the partition wall 14 so as to prevent a falling object formed of a part of the object to be transported G from being caught in the V-shaped groove portion 13 formed. Since the catching prevention means K including the falling object receiving pocket portion 15 and the biting prevention means K is provided, damage to the drive pulley 2 and the conveyor belt 5 can be prevented, and the conveyor can be caught in the event of a biting accident. It is possible to prevent the occurrence of a problem that the work of carrying out the object to be transported G by the belt 5 is stopped.

1 Head pulley 2 Drive pulley 3 Electric motor 4 Snap pulley 5 Conveyor belt
10 head shoot
12 Back side
13 V-groove
14 bulkhead
15 Fallen object receiving pocket
20 Carbide Tip Cleaner
20T chip
21 Rubber cleaner
22 Resin cleaner
23 Rotating brush cleaner
24 Brush cleaner G Object to be transported K Biting prevention means Y Rear downward tilt tension receiving area Zy Cleaner Z ₁ Cleaner Z ₂ Cleaner θ ₁ Head pulley center angle θ ₂ Drive pulley center angle

Claims (6)

A drive pulley (2) is arranged below and behind the head pulley (1), and the conveyor belt (5) is tilted backward and downward to receive tension between the head pulley (1) and the drive pulley (2). A state tension receiving area (Y) is formed, and a cleaner (Zy) is arranged in the rearward tilting tension receiving area (Y).
A part of the object to be transported (G) falls from above onto the back surface (12) of the rearward tilting tension receiving region (Y) of the conveyor belt (5) and reaches the drive pulley (2). The V-shaped groove portion (13) formed by the back surface (12) and the drive pulley (2) is hung from above so as to prevent a falling object formed of a part of the object to be transported (G) from getting caught in the V-shaped groove portion (13). It is provided with a biting prevention means (K) including a partition wall (14) provided in a shape, a pocket for receiving a falling object (15) attached to the lower end of the partition wall (14), and a biting prevention means (K). Characterized belt cleaning structure. The cleaner (Zy) disposed in the rearward tilting tension receiving region (Y) is composed of two or more types selected from a rubber cleaner (21), a resin cleaner (22), and a rotary brush cleaner (23). The belt cleaning structure according to claim 1. The conveyor belt (5) is _{wound around the head pulley (1} ) over a predetermined head pulley center angle (θ 1) and changes its direction to reach the rearward tilting tension receiving region (Y). The conveyor belt (5) is suspended from the head pulley (1).
The cemented carbide tip cleaner (20) presses the conveyor belt (5) so that the tip (20T) of the cemented carbide tip cleaner (20) presses the conveyor belt (5) within the range of the head pulley center angle (θ _1). The belt cleaning structure according to claim 1 or 2, which is arranged near the upstream of the rearward tilting tension receiving region (Y). The conveyor belt (5) is suspended from the drive pulley (2) so as to wrap around the drive pulley center angle (θ ₂ ) of 180 ° or more, and receives a conveying force.
Within the drive pulley center angle (θ ₂ ), the tip (20T) of the cemented carbide tip cleaner (20) is located in the vicinity of the rearward tilting tension receiving region (Y). The belt cleaning structure according to claim 1, 2 or 3, wherein the cemented carbide tip cleaner (20) is arranged in the vicinity of the downstream side of the rearward downward tilting tension receiving region (Y) so as to press. The conveyor belt (5) is suspended from the drive pulley (2) so as to wrap around the drive pulley center angle (θ ₂ ) of 180 ° or more, and receives a conveying force.
Claims 1 and 2 in which a rubber cleaner (21) and / or a brush cleaner (24) is arranged so as to press the conveyor belt (5) within the drive pulley center angle (θ _2). , 3 or 4 according to the belt cleaning structure. Claims 1, 2, 3 provided with a head chute (10) surrounding the head pulley (1), drive pulley (2), snap pulley (4) and cleaner (Zy) (Z ₁ ) (Z _2). The belt cleaning structure according to 4 or 5.

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