JP6722806B1 - Transport device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveying device capable of reducing a damage to a belt at a mounting portion of a belt and a chain and improving a service life of the belt. SOLUTION: A first engagement ring body that rotates together with a first roller, a second engagement ring body that rotates together with a second roller, and an endless metal mesh that is wound around the first roller and the second roller. -Shaped belt 14 and a chain attached to a side end portion of the belt 14 via attachment means 16, and the chain engages the first engagement ring body and the second engagement ring body and is wound. In the rotated conveyance device, the mounting means 16 has a pair of holding members 32 and 33 for holding the belt 14 from both front and back sides, and the holding members 32 and 33 are arranged such that their ends are separated from the surface of the belt 14. It has a curved end portion 39. [Selection diagram] Figure 8

Description

The present invention relates to a conveyor device that travels a belt and conveys an object on the belt.

Conventionally, as a transfer device of this type, for example, as shown in FIGS. 16 to 19, there is a transfer device that dehydrates and concentrates sludge 120 while it is transferred. The transport device 100 includes a drive roller 101, a first sprocket (not shown) that rotates together with the drive roller 101, a driven roller 103, a second sprocket (not shown) that rotates together with the driven roller 103, and a drive roller 101. It has an endless belt 105 made of a metal mesh wound around a driven roller 103, and chains 107 attached to both end portions of the belt 105 via a plurality of attaching means 106.

The chain 107 is wound by engaging the first sprocket and the second sprocket. The mounting means 106 are respectively provided on the chain 107, and are provided with a plurality of flat plate-shaped links 109 that are applied to the back side of the side ends of the belt 105, a screw member 110 and a nut 111 that fasten the belt 105 and the link 109, respectively. It has a plain washer 112. The screw member 110 penetrates the belt 105 and the link 109, the nut 111 is fastened to the screw member 110, and the plain washer 112 is sandwiched between the head 110 a of the screw member 110 and the belt 105.

As a result, both end portions of the belt 105 are sandwiched by the plain washers 112 and the links 109 from both front and back sides. When the driving roller 101 is rotationally driven, the first sprocket is rotationally driven together with the driving roller 101, and accordingly, the driven roller 103 and the second sprocket are rotationally driven, and the chain 107 and the belt 105 run.

The sludge 120 supplied onto the belt 105 is discharged from the belt 105 after being dehydrated and concentrated while being conveyed by the belt 105.

Note that the above-described transport device is described in, for example, Patent Document 1 below.

Patent No. 4036816

However, in the above conventional type, for example, as shown in FIG. 19, when the belt 105 passes the driven roller 103, the belt 105 is curved along the outer peripheral surface of the driven roller 103, and at this time, the end portion of the link 109 is bent. The stress concentrates on the contact portions 114 and 115 where the belt 105 contacts with the belt 105, and the belt 105 is easily damaged, which affects the service life of the belt 105.

In particular, it has been found that the stress is most likely to be concentrated on the contact portion 114 at which the end of the link 109 on the upstream side (rear side) in the belt running direction 121 of the end of the link 109 contacts the belt 105.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a conveyor device that can reduce the damage to the belt at the attachment portion of the belt and the chain and improve the service life of the belt.

In order to achieve the above object, the first aspect of the present invention provides a first roller, a first engagement ring body that rotates together with the first roller, a second roller, and a second engagement ring body that rotates together with the second roller. An endless belt made of a metal mesh wound around the first roller and the second roller, and a chain attached to a side end portion of the belt via attachment means,
A transport device in which a chain is wound by engaging a first engagement ring body and a second engagement ring body,
The attaching means has a pair of holding members for holding the belt from both front and back sides,
The pinching member has a belt pinching surface that pinches the belt by contacting the surface of the belt,
Outer end portion at least in the belt running direction of the upstream side of the ends of the outer peripheral edge of the belt holding surface of at least one of the clamping member of the front and back pair of holding members, apart from the surface of the belt in the belt thickness direction It is inclined in the direction.

According to this, when the first roller is rotationally driven, the first engaging ring body is rotationally driven together with the first roller, and accordingly, the second roller and the second engaging ring body are driven to rotate, and the chain is driven. And the belt run integrally. The conveyed material supplied on the belt is conveyed to the target location by the traveling belt.

When the belt passes the first roller or the second roller, the belt bends along the outer peripheral surface of the first roller or the second roller, but the end portion of the holding member is inclined in the direction away from the surface of the belt. Therefore, the stress concentration at the contact portion where the end portion of the sandwiching member and the belt come into contact with each other is relaxed, the damage to the belt is reduced, and the service life of the belt is improved.

Conveying apparatus according to the second invention the end of the clamping member is curved outward away from the surface of the more outer belt.

According to this, the stress concentration at the contact portion between the end portion of the holding member and the belt is relieved, the damage to the belt is reduced, and the service life of the belt is improved.

The transport device according to the third aspect of the invention includes a return roller that supports the belt of the return track from below,
The end portion of the sandwiching member is curved at a radius equal to or smaller than the radius of the roller having the smallest diameter of the first and second rollers and the return roller.

According to this, when the belt passes the return roller, the belt bends along the outer peripheral surface of the return roller, but since the end portion of the holding member bends in the direction away from the surface of the belt, the holding member Stress concentration at the contact portion between the end portion and the belt is relaxed, damage to the belt is reduced, and the service life of the belt is improved.

Since the end portion of the holding member is curved with a radius of the roller having the minimum diameter or less, the stress concentration at the contact portion between the end portion of the holding member and the belt is further alleviated.

In the conveying device according to the fourth aspect of the present invention, the holding member is a bowl-shaped washer,
Peripheral end portion of the mountain washer is what is curved outward away from the surface of the more outer belt.

According to this, since a general-purpose mountain washer is used as the holding member, cost reduction can be realized.

In the conveying device according to the fifth aspect of the present invention, the mounting means includes a mounting piece provided on the chain, a pair of holding members, and a screw member that fastens the belt and the mounting piece.

According to this, in the state where the belt is sandwiched from the front and back sides by the pair of sandwiching members, the pair of sandwiching members, the belt and the mounting piece are fastened by the screw member, so that the chain is attached to the side end portion of the belt through the mounting means. Attached to.
In the carrier device according to the sixth aspect of the present invention, the spacer is sandwiched between the mounting piece and one of the sandwiching members,
The screw member fastens the pair of holding members, the belt, the mounting piece, and the spacer.

As described above, according to the present invention, when the belt passes through the roller, the belt bends along the outer peripheral surface of the roller, but since the end portion of the holding member is inclined in the direction away from the surface of the belt, Stress concentration at the contact portion where the end portion of the holding member and the belt come into contact is relieved, damage to the belt is reduced, and the service life of the belt is improved.

It is a schematic side view which shows the structure of the belt type concentrator in the 1st Embodiment of this invention. FIG. 3 is a plan view of the belt type concentrator. FIG. 3 is a schematic plan view of the belt type concentrator with the belt removed. It is a XX arrow line view of FIG. FIG. 3 is an enlarged cross-sectional view of a means for attaching a side end portion of a belt and a chain on a conveyor track of the belt type concentrator. It is a XX arrow line view in FIG. FIG. 3 is an enlarged cross-sectional view of a means for attaching the side end portion of the belt and the chain on the return track of the belt type concentrator. FIG. 8 is a view on arrow XX in FIG. 7. FIG. 8 is a view on arrow YY in FIG. 7. It is an expanded sectional view of an attachment means of a side end of a belt and a chain in a return track of a belt type concentration machine in a 2nd embodiment of the present invention. It is a XX arrow line view in FIG. It is a YY arrow line view in FIG. It is an expanded sectional view of an attachment means of a side end of a belt and a chain in a return track of a belt type concentration machine in a 3rd embodiment of the present invention. It is an expanded sectional view of an attachment means of a side end of a belt and a chain in a return track of a belt type concentration machine in a 4th embodiment of the present invention. It is an expanded sectional view of an attachment means of a side end of a belt and a chain in a return track of a belt type concentration machine in a 5th embodiment of the present invention. It is a schematic side view which shows the structure of the conventional belt type concentrator. FIG. 3 is an enlarged cross-sectional view of the attachment portion between the side end portion of the belt and the chain of the belt type concentrator. It is a XX arrow line view in FIG. It is a YY arrow line view in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
In the first embodiment, as shown in FIGS. 1 to 4, reference numeral 1 denotes a belt-type concentrator (conveyor) that dehydrates sludge 2 (an example of a conveyed object) generated in a sewage treatment plant while conveying it on a belt. It is an example of a device).

The belt-type concentrator 1 is provided with a drive roller 10 (an example of a first roller) provided at a terminal end, a drive sprocket 11 (an example of a first engaging wheel) that rotates together with the drive roller 10, and a start end portion. Driven roller 12 (an example of a second roller), driven sprocket 13 (an example of a second engaging ring) that rotates together with driven roller 12, and an endless shape wound around drive roller 10 and driven roller 12. Belt 14, a plurality of return rollers 15, a chain 17 attached to both end portions of the belt 14 via a plurality of attachment means 16, a frame body 18, and a supply unit for supplying the sludge 2 onto the belt 14. 25 and a discharge part 26 for discharging the sludge 2 from the belt 14.

The frame body 18 has a pair of left and right side frames 19. The drive roller 10 is provided between the end portions of both side frames 19 and is rotationally driven by the motor 24 and the like. The drive sprockets 11 are provided on both sides of the drive roller 10, and rotate integrally with the drive roller 10 via the support shaft 20.

The driven roller 12 is rotatably provided between the starting ends of the side frames 19. The driven sprockets 13 are provided on both sides of the driven roller 12, and are rotatable integrally with the driven roller 12 via the support shaft 21.

The chain 17 is wound around by engaging the drive sprocket 11 and the driven sprocket 13 and has a plurality of outer plates 22, 23 (see FIGS. 5, 7, and 9). One of the outer plates 22 and 23 is closer to the side end of the belt 14, and the other outer plate 23 is farther from the side end of the belt 14.

The belt 14 is a mesh belt made of metal, and has a large number of minute holes communicating with both sides of the front and back due to a gap formed between the metal wire rods forming the mesh belt. Plural bolt insertion holes 29 are formed at both end portions of the belt 14 so as to penetrate through the front surface and the back surface, respectively. As shown in FIG. 1, the traveling path of the belt 14 has a conveying path 27 that travels from the driven roller 12 toward the driving roller 10 and a return path 28 that returns from the driving roller 10 toward the driven roller 12. doing.

As shown in FIGS. 1 to 3, a plurality of support plates 30 for supporting the belt 14 traveling in the transport direction 27 in the transport direction A from below are provided between the side frames 19.

As shown in FIGS. 1 and 4, the return roller 15 is rotatably provided between the side frames 19 and supports the belt 14 of the return track 28 from below. The diameter of the return roller 15 is smaller than the diameter of the driving roller 10 and the driven roller 12. Further, the belt 14 of the return track 28 together with the chain 17 is slackened in an arc shape downward between the drive roller 10 and the return roller 15, between both the return rollers 15, and between the return roller 15 and the driven roller 12. I'm out.

As shown in FIGS. 5 to 9, the attaching means 16 includes an attaching piece 31 integrally provided on one outer plate 22 of the chain 17 and a pair of mountain washers 32, 33 (for holding the belt 14 from both front and back sides). An example of a sandwiching member), a spacer 34, a pair of mountain washers 32 and 33, a belt 14, a mounting piece 31, and a bolt 37 and a nut 37 (an example of a screw member) that fastens the spacer 34. A penetrating mounting hole 41 is formed in the mounting piece 31.

Each of the mountain washers 32, 33 is a bowl-shaped washer having a through hole 42 in the central portion, and the outer peripheral end portion is curved toward the outer side in the radial direction in a direction away from the surface of the belt 14 at the end curved portion 39. Has over the entire circumference. The end curved portion 39 is curved with a radius r which is equal to or smaller than the radius of the return roller 15 (an example of the roller having the smallest diameter).

The spacer 34 is a cylindrical member and is sandwiched between the mounting piece 31 and the other washer 33. The bolt 36 is inserted into the through holes 42 of the mountain washers 32 and 33, the bolt insertion hole 29 of the belt 14, the spacer 34, and the mounting hole 41 of the mounting piece 31, and is tightened in the nut 37.

The operation of the above configuration will be described below.

When the drive roller 10 is rotationally driven by the motor 24 or the like, the drive sprocket 11 is rotationally driven together with the drive roller 10, and accordingly, the driven roller 12 and the driven sprocket 13 are driven to rotate and the belt 14 and the chain 17 are driven. Run integrally.

The sludge 2 is supplied from the supply unit 25 onto the belt 14 running on the transfer track 27, is gravity-filtered while being transferred along the transfer track 27, and is discharged from the discharge unit 26. At this time, the separated water separated from the sludge 2 by gravity filtration is discharged downward through the minute openings of the belt 14, so that the sludge 2 is dehydrated and concentrated.

When the belt 14 passes the return roller 15 on the return track 28, the belt 14 curves along the outer peripheral surface of the return roller 15 as shown in FIGS. Is curved in a direction away from the surface of the belt 14, stress concentration at the contact portion B between the outer peripheral end of the one mountain washer 32 and the belt 14 is relieved, and damage to the belt 14 is reduced. The service life of the belt 14 is improved.

Since the end curved portion 39 of one mountain washer 32 is curved with a radius r which is less than the radius of the return roller 15, stress concentration at the contact portion B between the outer peripheral end of the one mountain washer 32 and the belt 14. Is alleviated.

Similarly, when the belt 14 passes the driven roller 12, the belt 14 curves along the outer peripheral surface of the driven roller 12 as shown in FIGS. 5 and 6, but the outer peripheral end portion of the other mountain washer 33 is Since the belt 14 is curved in a direction away from the surface of the belt 14, the stress concentration at the contact portion C between the outer peripheral end of the other mountain washer 33 and the belt 14 is relieved, the damage to the belt 14 is reduced, and the belt is reduced. 14 service life is improved. The same applies when the belt 14 passes the drive roller 10.

Further, the cost can be reduced by using the mountain washers 32 and 33 which are general-purpose products as an example of the sandwiching member.

In the above-described first embodiment, the mountain washers 32 and 33 are used as an example of a pair of sandwiching members that sandwich the belt 14 from both front and back sides. However, when the belt type concentrator is not provided with the return roller 15, A flat washer may be used instead of the mountain washer 32 as one holding member, and a mountain washer 33 may be used as the other holding member. That is, it suffices that at least one of the front and back sides of the holding member on the side that comes into contact with the roller is curved in a direction in which the end portion of the holding member is separated from the surface of the belt 14.

Further, since the diameters of the drive roller 10 and the driven roller 12 are larger than the diameter of the return roller 15, the stress concentration generated when the belt 14 passes through the drive roller 10 and the driven roller 12 causes the belt 14 to pass through the return roller 15. It is smaller than the stress concentration that occurs when passing. Therefore, when the stress concentration generated when the belt 14 passes through the driving roller 10 and the driven roller 12 is so small as not to be a problem, the mountain washer 32 is used as one holding member and the mountain washer 33 is used as the other holding member. A plain washer may be used instead of.

(Second embodiment)
In the second embodiment, as shown in FIGS. 10 to 12, the attaching means 60 includes a pair of holding plates 61 and 62 (an example of a holding member) for holding the belt 14 from both front and back sides, and a pair of holding plates. It has a bolt 63 and a nut 64 (an example of a screw member) for fastening 61, 62 to each other.

The sandwiching plates 61 and 62 each have a through hole 66, and the other sandwiching plate 62 is provided integrally with one outer plate 22 of the chain 17.

The sandwiching plates 61, 62 have end portions in which an end portion on the upstream side (rear side) and an end portion on the downstream side (front side) in the belt traveling direction 70 are curved so as to be separated from the surface of the belt 14 toward the outside. It has a curved portion 68. The end curved portion 68 is curved with a radius r that is equal to or smaller than the radius of the return roller 15 (an example of a roller having the smallest diameter).

The bolt 63 is inserted into each through hole 66 of the sandwiching plates 61 and 62, and is fastened to the nut 64.

The operation of the above configuration will be described below.

When the belt 14 passes the return roller 15 on the return track 28, the belt 14 bends along the outer peripheral surface of the return roller 15, but both end portions of one holding plate 61 bend in a direction away from the surface of the belt 14. Therefore, the stress concentration at the contact portions D and E between the end portion of the one holding plate 61 and the belt 14 is relaxed, the damage to the belt 14 is reduced, and the service life of the belt 14 is improved.

Since the end curved portion 68 of the one holding plate 61 is bent at a radius r which is equal to or smaller than the radius of the return roller 15, the stress in the contact portions D and E between the end of the one holding plate 61 and the belt 14 is increased. Concentration is further eased.

Similarly, when the belt 14 passes the driven roller 12, the belt 14 bends along the outer peripheral surface of the driven roller 12, but the end portion of the other holding plate 62 bends in the direction away from the surface of the belt 14. Therefore, the stress concentration in the contact portion between the end portion of the other holding plate 62 and the belt 14 is relaxed, the damage received by the belt 14 is reduced, and the useful life of the belt 14 is improved. The same applies when the belt 14 passes the drive roller 10.

In the above-described second embodiment, the end curved portions 68 are formed on both of the sandwiching plates 61 and 62, but when the belt-type concentrator is not provided with the return roller 15, one of the sandwiching plates is formed. The end curved portion 68 may not be formed in 61, and the end curved portion 68 may be formed only in the other sandwiching plate 62.

(Third Embodiment)
In the second embodiment described above, as shown in FIG. 11, the sandwiching plate 61 has end curved portions 68 at both ends on the upstream side and the downstream side in the belt running direction 70, respectively. When the belt 14 passes the return roller 15, of the contact portions D and E between the end portion of the sandwiching plate 61 and the belt 14, the contact portion D on the upstream side in the belt traveling direction 70 causes the belt 14 to face downward due to its own weight. Since it is pulled in the direction opposite to the rotation direction of the return roller 15, the stress concentration tends to increase more easily than the contact portion E on the downstream side in the belt running direction 70. Based on this, in the third embodiment, as shown in FIG. 13, the sandwiching plates 61 and 62 each have an end curved portion 68 only on the upstream side in the belt traveling direction 70, and It does not have the end curved portion 68 on the downstream side.

According to this, the stress concentration in the contact portion D between the upstream end of the one holding plate 61 and the belt 14 is relaxed, the damage to the belt 14 is reduced, and the useful life of the belt 14 is improved.

In the third embodiment, the sandwiching plates 61 and 62 each have the end curved portion 68 only on the upstream side in the belt traveling direction 70, but the sandwiching plate 62 that does not have the end curved portion 68. May be used.

(Fourth Embodiment)
In the first embodiment described above, as an example of the sandwiching member, as shown in FIG. 8, the outer peripheral end portion has an end curved portion 39 that is curved in a direction away from the surface of the belt 14 toward the radially outer side. Although a pair of mountain washers 32 and 33 are used, as a fourth embodiment, as shown in FIG. 14, the outer peripheral end is inclined toward the outer side in the radial direction in the direction away from the surface of the belt 14. A pair of washers 76 and 77 having the inclined portion 75 may be used.

According to this, the same operation and effect as those of the first embodiment can be obtained.

(Fifth Embodiment)
In the second embodiment, as shown in FIG. 11, the sandwiching plates 61 and 62 are separated from the surface of the belt 14 such that the upstream side end and the downstream side end of the sandwiching plates 61 and 62 are located outwardly. Although it has the end portion curved portion 68 that is curved in the direction, as shown in FIG. 15 as the fifth embodiment, the sandwiching plates 61 and 62 are located at the upstream end portion in the belt running direction 70. The end portions on the downstream side may each have an end inclined portion 79 that is inclined toward the outer side from the surface of the belt 14.

According to this, the same operation and effect as those of the second embodiment can be obtained.

In each of the above-described embodiments, the belt-type concentrator 1 that dehydrates the sludge 2 while transporting the sludge 2 has been described as an example of the transport device. It may be one. Further, the present invention is not limited to the belt type concentrator 1, and for example, a conveying device for a sintering furnace that conveys and sinters metal parts and the like by the belt 14, and food and the like that are heated and conveyed while being conveyed by the belt 14. Other transfer devices using a metal mesh belt, such as a transfer device for an oven and a transfer device for a cleaning device that performs cleaning and draining while transferring an article, may be used.

1 Belt type concentrator (conveyor)
10 Drive roller (first roller)
11 Drive sprocket (first engaging wheel)
12 Driven roller (second roller)
13 Driven sprocket (second engaging wheel)
14 belt 15 return roller 16 mounting means 17 chain 28 return track 31 mounting pieces 32, 33 mountain washer (clamping member)
36, 37 bolts and nuts (screw members)
60 Attachment Means 61, 62 Clamping Plate (Clamping Member)
63, 64 bolts and nuts (screw members)
70 Belt running direction 76, 77 Washer (clamping member)

Claims (6)

A first roller, a first engagement ring body that rotates together with the first roller, a second roller, a second engagement ring body that rotates together with the second roller, and a first roller and a second roller. An endless belt made of a metal mesh, and a chain attached to the side end of the belt via attachment means,
A transport device in which a chain is wound by engaging a first engagement wheel body and a second engagement wheel body,
The attaching means has a pair of holding members for holding the belt from both front and back sides,
The gripping member has a belt gripping surface that grips the belt by contacting the surface of the belt,
Outer end portion at least in the belt running direction of the upstream side of the ends of the outer peripheral edge of the belt holding surface of at least one of the clamping member of the front and back pair of holding members, apart from the surface of the belt in the belt thickness direction A conveying device characterized by being inclined in a direction. Conveying apparatus according to claim 1, wherein the end portion of the clamping member is characterized by being curved outward away from the surface of the more outer belt. A return roller that supports the belt of the return track from below is provided,
3. The conveying device according to claim 2, wherein an end portion of the sandwiching member is curved within a radius of a roller having the smallest diameter of the first and second rollers and the return roller. The holding member consists of a bowl-shaped washer,
Conveying device according to curved outwardly from claim 1, wherein any one of claims 3 to peripheral ends of the mountain washer is separated from the surface of the more outer belt. The mounting means includes a mounting piece provided on the chain, a pair of holding members, a screw member for fastening the belt and the mounting piece, and the mounting means according to any one of claims 1 to 4. Transport device. A spacer is sandwiched between the mounting piece and one of the sandwiching members,
The transport device according to claim 5, wherein the screw member fastens the pair of holding members, the belt, the mounting piece, and the spacer.

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