WO2015025615A1

WO2015025615A1 - Conveyor chain

Info

Publication number: WO2015025615A1
Application number: PCT/JP2014/066892
Authority: WO
Inventors: 石川　雅之; 山本　健一郎
Original assignee: 株式会社椿本チエイン; ツバキ山久チエイン株式会社
Priority date: 2013-08-22
Filing date: 2014-06-25
Publication date: 2015-02-26
Also published as: JP2015040101A; JP5593428B1

Abstract

A conveyor chain (11) provided with a plurality of link plates (13) and a plurality of pins (14). The link plates (13) have, on both sides in the transportation direction (X), pin hole formation parts (16a, 16b) in which pin holes (15a, 15b) are formed. The pins (14) are inserted through pin holes (15a, 15b) that overlap in the width direction (Y), whereby link plates (13) that are adjacent in the transportation direction (X) are rotatably connected. A separation link body (17) is attached to one of the link plates (13). The separation link body (17) constitutes an end part of the link plate (13) in the width direction (Y), and is separated from the remaining portion. The separation link body (17) is provided with two connection parts (18) and a finger hook (19) into which a finger is inserted. The two connection parts (18) are rotatably connected to a pair of pins (14) that are adjacent in the transportation direction (X), and one of the connection parts (18) is detachably attached to the pin (14) that corresponds to the connection part (18).

Description

Conveyor chain

The present invention relates to a conveyor chain used for conveying an article.

Patent Document 1 discloses a conveyor chain in which a plurality of link plates are connected by connecting pins. A plurality of bush holes are formed at intervals on the first end of the link plate. A plurality of pin holes are formed at intervals on the second end of the link plate. Connecting pins are inserted through the bush holes and pin holes alternately arranged in adjacent link plates. The connecting pin is assembled with the link plate by hitting it with a hammer. In this way, adjacent link plates are connected to each other.

¡An escape projection is formed at the end of the connecting pin. When the connecting pin is assembled to the link plate, the protrusion for retaining is engaged with one of the plurality of bush holes. A hook-shaped stopper is formed on the end face of the connecting pin. The hook-shaped stopper eliminates excessive hammering into the bush and pin holes. A depression is formed in the link plate. The recess portion accommodates a hook-shaped stopper of the connecting pin assembled to the link plate.

To perform maintenance such as cleaning, the conveyor chain must be disassembled. In addition, after maintenance, the conveyor chain needs to be assembled again. In order to disassemble the conveyor chain, it is necessary to remove the connecting pins from the bush holes and the pin holes of the link plate. However, in this case, since the hook-shaped stopper of the connecting pin is housed in the recess, it is impossible to put a finger on the hook-shaped stopper. For this reason, it is necessary to insert the tip of a tool such as a flathead screwdriver or a hammer between the recess and the hook-shaped stopper, pull out the hook-shaped stopper from the recess, and then remove the connecting pin. Such work is complicated and troublesome for the operator.

Japanese Patent Application Laid-Open No. 11-334834

An object of the present invention is to provide a conveyor chain that can be easily disassembled and assembled manually without using a tool.

In order to solve the above problems, according to a first aspect of the present invention, there are a plurality of link plates having a conveying surface for conveying an article, each of the plurality of link plates being on both sides in the article conveying direction. The first and second pin hole forming portions are formed in the transport direction in the first and second pin hole forming portions, respectively. Pin holes having axes extending perpendicularly to the conveying surface and extending along the conveying surface are formed, and the positions of the first pin hole forming portions in the axial direction of the pin holes are shifted from the positions of the second pin hole forming portions in the axial direction. A plurality of link plates and a plurality of pins connecting the plurality of link plates, the pin holes of the link plates adjacent in the transport direction being overlapped in the axial direction, and the pins being pinned in the pin holes overlapped in the axial direction Inserted By being, conveyor chain link plates adjacent to the conveying direction and a plurality of pins which are rotatably connected is provided. A separation link body is attached to at least one of the plurality of link plates, and the separation link body constitutes an axial end portion of the link plate and is separated from the remaining portion of the link plate. The separation link body includes two connection portions and a finger hook portion for hooking a finger, and the two connection portions are connected to one of the pins adjacent to each other in the transport direction so as to be rotatable. It consists of a 2nd connection part connected with a connection part and the other pin so that rotation is possible. At least one of the first and second connecting portions is attached to and detached from a pin corresponding to at least one of the connecting portions.

According to this configuration, it is possible to release the connection between the connecting portion and the pin, or to connect the connecting portion and the pin by placing a finger on the finger hooking portion of the separation link body. For this reason, the separation link body and the pin can be easily attached to and detached from the conveyor chain by hand. Therefore, it is possible to easily disassemble and assemble the conveyor chain manually without using a tool.

In the conveyor chain, it is preferable that the first connecting portion is attached to and detached from a pin corresponding to the first connecting portion, and the second connecting portion is connected to a pin corresponding to the second connecting portion.
According to this configuration, the pins can be attached to and detached from the conveyor chain together with the separation link body.

In the conveyor chain, it is preferable that both the first and second connecting portions are attached to and detached from pins corresponding to the first and second connecting portions, respectively.
According to this configuration, the separation link body and the pin can be attached to and detached from the conveyor chain separately.

In the conveyor chain, at least one of the first and second connecting portions has a connecting portion side engaging portion that engages with a pin side engaging portion formed on a pin corresponding to at least one connecting portion. It is preferable that the movement of the pin in the axial direction is regulated by the engagement between the pin side engaging portion and the connecting portion side engaging portion.

According to this configuration, the position of the pin does not shift in the axial direction.
In the conveyor chain, the position of the first connecting portion in the axial direction is preferably shifted from the position of the second connecting portion in the axial direction.

The fragmentary perspective view of the conveyor chain of 1st Embodiment of this invention. FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. The exploded perspective view of a conveyor chain. The perspective view which looked at the isolation | separation link body of the conveyor chain from the inner side. The perspective view which looked at the separation link body of the conveyor chain from the outside. The perspective view of the pin of a conveyor chain. The perspective view which shows the connection state of a isolation | separation link body and a pin. The perspective view of the state which cancelled | released connection with the 2nd connection part and pin of a isolation | separation link body. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. The fragmentary perspective view of the conveyor chain of 2nd Embodiment of this invention. The perspective view which expands and shows the isolation | separation link body vicinity of a conveyor chain. The perspective view which shows the connection of the separation link body of a conveyor chain, and a pin. The perspective view of a isolation | separation link body. The exploded perspective view of a conveyor chain. The perspective view of the state which cancelled | released connection with the 1st connection part of a isolation | separation link body, and a pin. The perspective view of the isolation | separation link body of the example of a change. The perspective view which shows the connection state of the isolation | separation link body and pin of the example of a change.

(First embodiment)
A first embodiment embodying a conveyor chain according to the present invention will be described below with reference to FIGS.

1 and 2, the conveyor chain 11 is composed of a plurality of link plates 13 and a plurality of pins 14. The link plate 13 is made of a synthetic resin and has a substantially rectangular shape. The link plate 13 has a flat transport surface 12 for transporting articles. The pin 14 rotatably connects the link plates 13 adjacent to each other in the conveyance direction X of the article. The link plate 13 has a plurality of pin hole forming portions 16 on both sides in the transport direction X. The plurality of pin hole forming portions 16 are arranged at intervals in the width direction Y orthogonal to the transport direction X. A pin hole 15 into which the pin 14 is inserted is formed in the pin hole forming portion 16.

Each link plate 13 has eleven pin hole forming portions 16. That is, the link plate 13 has six pin hole forming portions 16 on the right side of FIG. 1 and five pin hole forming portions 16 on the left side of FIG. Here, the six pin hole forming portions 16 arranged on the right side in FIG. 1 are first pin hole forming portions 16a, and the five pin hole forming portions 16 arranged on the left side in FIG. 1 are second pin hole forming portions. Part 16b.

The axis of the pin hole 15 is orthogonal to the transport direction X and extends along the transport surface 12. That is, the axial direction of the pin hole 15 coincides with the width direction Y. The position in the width direction Y of each first pin hole forming portion 16a is shifted from the position in the width direction Y of the corresponding second pin hole forming portion 16b. Each 2nd pin hole formation part 16b is arrange | positioned so as to correspond to the clearance gap between the adjacent 1st pin hole formation parts 16a.

Here, the pin hole 15 of each first pin hole forming portion 16a is a first pin hole 15a, and the pin hole 15 of each second pin hole forming portion 16b is a second pin hole 15b. Each first pin hole 15a is formed in a substantially D shape by cutting a part of a perfect circle. Each second pin hole 15b is formed in a perfect circle shape. The radius of the perfect circle portion of the first pin hole 15a is the same as the radius of the second pin hole 15b.

In the link plate 13 of the pair of link plates 13 adjacent in the transport direction X, five gaps are formed by the six first pin hole forming portions 16a. A second pin hole forming portion 16b of the other link plate 13 of the pair of link plates 13 is inserted into each of the five gaps. In this state, the first pin hole 15a of each first pin hole forming portion 16a and the second pin hole 15b of each second pin hole forming portion 16b are overlapped in the width direction Y. In this state, the pins 14 are inserted into the first pin holes 15a of the first pin hole forming portions 16a and the second pin holes 15b of the second pin hole forming portions 16b. The pin 14 rotatably connects the link plates 13 adjacent to each other in the transport direction X.

As shown in FIGS. 1 and 3, a separation link body 17 is attached to one of the plurality of link plates 13. The separation link body 17 constitutes an end portion in the width direction Y of the link plate 13 and is separated from the remaining portion of the link plate 13. Unlike the other first pin hole forming portions 16a, each first pin hole forming portion 16a in the remaining portion of the link plate 13 has a perfect second pin hole 15b.

The separating link body 17 includes two connecting portions 18 and a finger hooking portion 19 that connects the two connecting portions 18. One connecting portion 18 is formed on each side of the separating link body 17 in the transport direction X. One of the two connecting portions 18 is a first connecting portion 18a corresponding to one first pin hole forming portion 16a, and the other is a second connecting portion corresponding to one second pin hole forming portion 16b. 18b. A part of the separation link body 17 constitutes a part of the transport surface 12.

As shown in FIGS. 4 and 5, the position of the first connecting portion 18a in the width direction Y is shifted from the position of the second connecting portion 18b in the width direction Y. The first connecting portion 18a has a substantially D-shaped first pin hole 15a. The second connecting portion 18b is formed in a rounded bowl shape by having an opening 20 formed by partially cutting away the side opposite to the conveying surface 12 of the second pin hole 15b shown in FIG. In this case, the width of the opening 20 in the transport direction X is slightly narrower than the diameter of the second pin hole 15b shown in FIG.

As shown in FIGS. 3 and 5, the first connecting portion 18a is formed with an accommodating recess 21 that opens to the outside. As shown in FIG. 1, the housing recess 21 is also formed in another link plate 13 from which the separation link body 17 is not separated. The housing recess 21 of the other link plate 13 is formed on the surface of the link plate 13 on the same side as the separation link body 17.

As shown in FIGS. 6 and 7, the pin 14 includes a shaft portion 22 and a flange portion 23 at the end of the shaft portion 22. The shaft portion 22 is formed in a substantially round bar shape extending in the width direction Y. The collar portion 23 is formed in a plate shape. The cross section of the shaft portion 22 is formed in a substantially D shape, similar to the first pin hole 15 a of the first connecting portion 18 a of the separation link body 17. For this reason, a part of the peripheral surface of the shaft portion 22 is a flat surface 24. A convex portion 25 is formed in the vicinity of the flange portion 23 on the flat surface 24.

3 and 7, the shaft portion 22 of the pin 14 is press-fitted into the first pin hole 15a from the housing recess 21 of the separation link body 17. Then, the convex portion 25 of the pin 14 passes through the first pin hole 15 a, and the flange portion 23 of the pin 14 is brought into contact with the bottom surface of the receiving recess 21 and is received in the receiving recess 21. In this way, the flange portion 23 functions as a positioning portion for the pin 14. Further, the convex portion 25 functions as a retaining portion that prevents the pin 14 from coming off from the first pin hole 15a. Accordingly, the first connecting portion 18 a of the separation link body 17 is connected to the pin 14 corresponding to the first connecting portion 18 a among the two pins 14 adjacent in the transport direction X.

2 and 3, the second connecting portion 18 b of the separation link body 17 is pressed from the outside of the opening 20 to the peripheral surface of the shaft portion 22 of the pin 14. Then, the shaft portion 22 of the pin 14 passes through the opening portion 20 and is fitted and locked inside the second connecting portion 18b. On the other hand, the 2nd connection part 18b is spaced apart from the axial part 22 of the pin 14 latched inside the 2nd connection part 18b. Then, the shaft part 22 of the pin 14 passes through the opening part 20 and comes out of the second connecting part 18b. Thus, the connection between the pin 14 and the second connecting portion 18b is released. Therefore, the 2nd connection part 18b of the isolation | separation link body 17 is attached or detached to the pin 14 corresponding to the 2nd connection part 18b among the two pins 14 adjacent to the conveyance direction X. As shown in FIG.

Next, the operation of the conveyor chain 11 will be described.
The conveyor chain 11 is wound around a plurality of sprockets. The conveyor chain 11 conveys the article placed on the conveyance surface 12 by moving around each sprocket. The conveyor chain 11 may be removed from each sprocket for maintenance. In this case, first, a thumb is put on the conveyance surface 12 of the finger hook portion 19 of the separation link body 17 and an index finger is put on the surface of the finger hook portion 19 opposite to the conveyance surface 12. In this way, the separation link body 17 is rotated around the pin 14 connected to the first connecting portion 18a while picking the finger hook portion 19 with the thumb and the index finger.

Then, as shown in FIGS. 8 and 9, the second connecting portion 18 b is detached from the pin 14. Therefore, when the separation link body 17 is pulled in the width direction Y, as shown in FIG. 3, the pin 14 connected to the first connection portion 18 a is pulled out together with the separation link body 17. And the conveyor chain 11 is parted in the position where the pin 14 was pulled out, and the conveyor chain 11 is removed from each sprocket.

Then, after maintenance of the conveyor chain 11 removed from each sprocket is performed, the conveyor chain 11 is attached to each sprocket again. In this case, first, the conveyor chain 11 is wound around a plurality of sprockets.

Subsequently, the first pin hole forming portion 16a of one link plate 13 and the second pin hole forming portion 16b of the other link plate 13 which are located in the divided portion of the conveyor chain 11 are overlapped in the width direction Y. It is done. As shown in FIG. 8, the pin 14 connected to the first connecting portion 18a is inserted into each first pin hole while grasping the finger hooking portion 19 with the thumb and the index finger in a state where both the link plates 13 are in contact with each other. The first pin holes 15a of the forming portions 16a and the second pin holes 15b of the second pin hole forming portions 16b are alternately inserted.

Subsequently, the second connecting portion 18b is brought closer to the pin 14 corresponding to the second connecting portion 18b while picking the separation link body 17 with the thumb and the index finger. At this time, the separation link body 17 is rotated around the pin 14 connected to the first connecting portion 18a. Then, when the second connecting portion 18b is pressed against the pin 14, the shaft portion 22 of the pin 14 passes through the opening 20 and is fitted inside the second connecting portion 18b. In this way, as shown in FIGS. 1 and 2, the pin 14 is locked to the second connecting portion 18b, and the divided conveyor chain 11 is connected. Therefore, it is possible to easily perform a disassembling operation such as dividing the conveyor chain 11 and an assembling operation such as connecting the conveyor chain 11 manually without using a tool.

As described above, according to the first embodiment, the following effects are exhibited.
(1) The conveyor chain 11 includes a separation link body 17. The separation link body 17 includes two connecting portions 18 and a finger hooking portion 19 that connects the two connecting portions 18. The first connecting portion 18a is connected to one of the two pins 14 adjacent in the transport direction X. The second connecting portion 18b is attached to and detached from the other pin 14 of the two pins 14 adjacent in the transport direction X. According to this configuration, it is possible to release the connection between the second connecting portion 18 b and the pin 14 or to connect the second connecting portion 18 b and the pin 14 while grasping the finger hook portion 19. Further, the separation link body 17 and the pin 14 connected to the first connection portion 18a of the separation link body 17 can be easily attached to and detached from the conveyor chain 11 by manual work. Therefore, it is possible to easily disassemble and assemble the conveyor chain manually without using a tool.
(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. Note that the detailed description of the same parts in the second embodiment as those in the first embodiment is omitted.

As shown in FIGS. 10 and 11, the conveyor chain 11 of the second embodiment is different from the conveyor chain 11 of the first embodiment in that the first connecting portion 18 a of the separation link body 17 is attached to and detached from the pin 32. . In other words, the first connecting portion 18 a has the opening 30 and is formed in a rounded bowl shape. The opening 30 is formed by changing the substantially D-shaped first pin hole 15a of the first embodiment into a perfect circular second pin hole 15b and partially cutting away the opposite side of the second pin hole 15b from the conveying surface 12. It is a thing.

As shown in FIG. 12 and FIG. 13, an engagement recess 31 as a connection portion side engagement portion is formed on the inner peripheral surface of the first connection portion 18 a. The engaging recess 31 is formed at the center in the width direction Y of the first connecting portion 18a and extends over the entire inner peripheral surface of the first connecting portion 18a. As shown in FIG. 14, the pin 32 connected to the first connecting portion 18a includes a columnar shaft portion 33 extending in the width direction Y and a flange portion 34 as a pin-side engaging portion. . The flange portion 34 is formed in an annular shape at the end of the shaft portion 33.

As shown in FIG. 12, with the first connecting portion 18a of the separation link body 17 connected to the end portion of the pin 32, the end portion of the pin 32 is inserted from the opening 30 into the first connecting portion 18a. The flange portion 34 is fitted in the engagement recess 31. Thereby, the pin 32 is locked and connected to the first connecting portion 18a. At this time, the flange portion 34 is fitted into the engagement recess 31, whereby the movement of the pin 32 in the width direction Y is restricted. At this time, the end surface of the shaft portion 33 of the pin 32, that is, the end surface in the vicinity of the flange portion 34 of the pin 32 is flush with the outer surface of the separation link body 17.

Next, the operation of the conveyor chain 11 will be described with reference to FIG.
The conveyor chain 11 is wound around a plurality of sprockets. The conveyor chain 11 conveys the article placed on the conveyance surface 12 by moving around each sprocket. The conveyor chain 11 may be removed from each sprocket for maintenance. In this case, first, a thumb is put on the conveyance surface 12 of the finger hook portion 19 of the separation link body 17 and an index finger is put on the surface of the finger hook portion 19 opposite to the conveyance surface 12. Thus, while pinching the finger hook 19 with the thumb and forefinger, the separation link body 17 is rotated around the pin 14 connected to the second connecting portion 18b so as to separate the first connecting portion 18a from the pin 32. Let The second connecting portion 18b is attached to and detached from the pin 14.

Then, as shown in FIG. 15, the first connecting portion 18 a is detached from the pin 32. Thereby, since the pin 32 passes through the opening 30 and goes out of the first connecting portion 18a, the connection between the pin 32 and the first connecting portion 18a is released. Therefore, as shown in FIG. 14, when the pin 32 is picked with the thumb and index finger and pulled in the width direction Y, only the pin 32 is pulled out. And the conveyor chain 11 is parted in the position where the pin 32 was pulled out, and the conveyor chain 11 is removed from each sprocket. At this time, the second connecting portion 18 b of the separation link body 17 can be detached from the pin 14.

After maintenance of the conveyor chain 11 removed from each sprocket is performed, the conveyor chain 11 is attached to each sprocket again. In this case, first, the conveyor chain 11 is wound around a plurality of sprockets.

Subsequently, the first pin hole forming portion 16a of one link plate 13 and the second pin hole forming portion 16b of the other link plate 13 which are located in the divided portion of the conveyor chain 11 are overlapped in the width direction Y. It is done. As shown in FIG. 15, the pin 32 is moved to the first pin hole of each first pin hole forming portion 16a while picking the end of the pin 32 with the thumb and the index finger in a state where both the link plates 13 are in contact with each other. 15a and the second pin hole 15b of each second pin hole forming portion 16b are inserted alternately.

Subsequently, the first connecting portion 18a is brought close to the pin 32 while picking the separation link body 17 with the thumb and the index finger. At this time, the separation link body 17 is rotated around the pin 14 connected to the second connecting portion 18b. Then, when the first connecting portion 18 a is pressed against the pin 32, the shaft portion 33 of the pin 32 passes through the opening 30 and is fitted inside the first connecting portion 18 a. Thus, the pin 32 is locked to the first connecting portion 18a. Thereby, the divided conveyor chain 11 is connected. At this time, since the flange portion 34 of the pin 32 is fitted into the engagement recess 31 of the first connecting portion 18a, the movement of the pin 32 in the width direction Y is restricted. Therefore, it is possible to easily perform a disassembling operation such as dividing the conveyor chain 11 and an assembling operation such as connecting the conveyor chain 11 manually without using a tool.

As described above, according to the second embodiment, the following effects are exhibited.
(2) The conveyor chain 11 includes a separation link body 17. The separation link body 17 includes two connecting portions 18 and a finger hooking portion 19 that connects the two connecting portions 18. The first connecting portion 18a is attached to and detached from the pin 32, and the second connecting portion 18b is attached to and detached from the pin 14. According to this configuration, it is possible to release the connection between the first connecting portion 18 a and the pin 32 while pinching the finger hook portion 19, or to connect the first connecting portion 18 a and the pin 32. Alternatively, it is possible to release the connection between the second connecting portion 18b and the pin 14 or to connect the second connecting portion 18b and the pin 14 while grasping the finger hook portion 19. Therefore, the separation link body 17 and the pin 32 can be easily attached to and detached from the conveyor chain 11 manually. Also, the conveyor chain can be easily disassembled and assembled manually without using a tool.

(3) On the inner peripheral surface of the first connecting portion 18a, an engaging recess 31 that fits with the flange portion 34 of the pin 32 is formed. When the flange portion 34 is fitted into the engagement recess 31, the movement of the pin 32 in the width direction Y is restricted. According to this configuration, the position of the pin 32 does not shift in the width direction Y in a state where the separation link body 17 and the pin 32 are assembled to the conveyor chain 11.

In addition, you may change each said embodiment as follows.
As shown in FIG. 16, in the first embodiment, the first connecting portion 18a is formed in a bowl shape having an opening 40 formed by partially cutting the opposite side of the first pin hole 15a from the conveying surface 12. May be. Also with this configuration, the first connecting portion 18 a can be attached to and detached from the pin 14.

As shown in FIG. 17, in the second embodiment, the second pin hole 15b through which the pin 14 shown in FIG. 11 is inserted is formed in the second connecting portion 18b, and the second connecting portion 18b is connected to the pin 14. May be.

In the second embodiment, when the conveyor chain 11 is divided and connected, the second connecting portion 18b may be attached to and detached from the pin 14 while maintaining the connection between the first connecting portion 18a and the pin 32. In this way, the pin 32 can be attached to and detached from the conveyor chain 11 together with the separation link body 17 as in the first embodiment.

-In 2nd Embodiment, the structure of the 2nd connection part 18b may be the same as the structure of the 1st connection part 18a. That is, the engaging recess 31 may be formed on the inner peripheral surface of the second connecting portion 18b. In this case, the pin 32 is used as a pin corresponding to the second connecting portion 18b.

In the above embodiments, the separation link body 17 may be attached to two or more link plates 13 of the plurality of link plates 13. In this case, the number of separation link bodies 17 and the attachment position of the separation link bodies 17 on the link plate 13 may be arbitrarily changed.

In the above embodiments, the conveyor chain 11 may be made of metal.

Claims

A plurality of link plates each having a conveying surface for conveying an article, wherein each of the plurality of link plates has pin hole forming portions on both sides in the article conveying direction, and one of the two side parts; A first pin hole forming portion and a second pin hole forming portion on the other side, and the first and second pin hole forming portions each have an axis that is orthogonal to the transport direction and extends along the transport surface. A plurality of link plates, each of which has a pin hole formed therein, wherein the position of the first pin hole forming portion in the axial direction of the pin hole is shifted from the position of the second pin hole forming portion in the axial direction;
A plurality of pins connecting the plurality of link plates, wherein pin holes of link plates adjacent to each other in the transport direction are overlapped in the axial direction, and pins are inserted into the pin holes overlapped in the axial direction. A conveyor chain comprising a plurality of pins to which link plates adjacent in the transport direction are rotatably connected,
A separation link body is attached to at least one of the plurality of link plates, and the separation link body constitutes an axial end portion of the link plate and is separated from the remaining portion of the link plate,
The separation link body includes two connecting portions and a finger hooking portion for hooking a finger, and the two connecting portions are rotatably connected to one of the pins adjacent in the transport direction. A first connecting portion and a second connecting portion rotatably connected to the other pin,
A conveyor chain, wherein at least one of the first and second connecting portions is attached to and detached from a pin corresponding to the at least one connecting portion.
In the conveyor chain of Claim 1,
The first connecting part is attached to and detached from a pin corresponding to the first connecting part,
The conveyor chain, wherein the second connecting part is connected to a pin corresponding to the second connecting part.
In the conveyor chain of Claim 1,
The first and second connecting portions are both attached to and detached from pins corresponding to the first and second connecting portions, respectively.
In the conveyor chain of Claim 3,
At least one of the first and second connecting portions is provided with a connecting portion side engaging portion that engages with a pin side engaging portion formed on a pin corresponding to the at least one connecting portion. The movement of the pin in the axial direction is restricted by the engagement of the pin side engaging portion and the connecting portion side engaging portion.
In the conveyor chain according to any one of claims 1 to 4,
The position of the 1st connection part in the said axial direction has shifted | deviated from the position of the 2nd connection part in the said axial direction, The conveyor chain characterized by the above-mentioned.