JP2009085393A - Chain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high strength chain capable of coping with either rotation direction of a sprocket, moving both directions, and being applied to a relatively large sized conveyer or the like. <P>SOLUTION: A pair of links 5 are provided at a double link part 11 oppositely to make an axis of each pin hole 8 consistent. The double link part 11 and a single link part 9 provided with a link 3 including a pin hole 7 are connected by an arm 13. A tip side of the double link part 11 is a double link tip part 17, and is provided with a meshing part 21 substantially perpendicular to an axial direction of the arm 13. A neighborhood of the connection part of the double link part 11 and the arm 13 is a double link root part 19, and is provided with a meshing part 23 substantially perpendicular to the axial direction of the arm 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a high-strength chain that can move in both directions.

Conventionally, a chain used for a conveyor, a transporting device, or the like is required to have strength or the like according to a use environment. In particular, high strength is required for a chain used in a transporting device or the like that moves a large amount of a large transported object.

On the other hand, the transport device may not only move in one direction but may require a reciprocating motion. Further, if the chain is continuously used so that the movement of the chain is only in the same direction, a part of the chain is significantly worn and the life of the chain is shortened. For this reason, even if it is a chain used for the conveyance apparatus which moves only to one direction, it is desirable that the direction of the chain can be changed by periodically changing the direction of the chain. In other words, it is desirable to use a chain that can be used regardless of which direction the sprocket is applied to.

As a conventionally used chain, for example, an outer plate portion and an inner plate portion are formed by a single offset plate, a bush is provided between a pair of inner plate portions, and an outer plate portion, an inner plate portion, a bushing are provided. There is an offset type chain in which adjacent offset plates are rotatably connected to each other by a pin passing through the shaft, the teeth of the sprocket mesh with the bush, and the sprocket can rotate in both directions (Patent Document 1).

There is a large chain 80 as shown in FIGS. FIG. 9 is a view showing the main body member 70 constituting the chain 80, FIG. 9A is a perspective view of the main body member 70, and FIG. 9B is a plan view of the main body member 70. The main body member 70 is mainly composed of a single link portion 77 having a single link 73, a multiple link portion 79 having a pair of links 75, an arm 81 connecting the single link portion 77 and the multiple link portion 79, and the like. The

A pin hole 71 and a pin hole 72 are provided at the centers of the link 73 and the link 75, respectively. The multiple link portion 79 is provided with a pair of links 75 facing each other so that the axes of the respective pin holes 72 coincide. The single link portion 77 provided with the link 73 and the multiple link portion 79 provided with the link 75 are connected by an arm 81. That is, the single link 73 and the pair of links 75 are connected by the arm 81.

The distal end side of the multiple link portion 79 is a multiple link distal end portion 83, and a meshing portion 87 that is substantially perpendicular to the axial direction of the arm 81 is provided. The vicinity of the connecting portion between the multiple link portion 79 and the arm 81 is a multiple link root portion 85, and the link 75 and the arm 81 are connected obliquely with respect to the axial direction of the arm 81. That is, the multiple link root portion 85 is not substantially perpendicular to the axial direction of the arm 81 like the meshing portion 87 but has a tapered shape.

10A and 10B are diagrams showing meshing of the chain 80 constituted by the main body member 70 and the sprocket 61. FIG. 10A is a plan view of the chain 80, and FIG. 10B is a side view of the chain 80. is there. A pair of teeth 63 are provided in parallel in the width direction of the sprocket 61, and a plurality of pairs of teeth 63 are provided at regular intervals in the circumferential direction of the sprocket 61.

As shown in FIG. 10B, when the sprocket 61 rotates in the arrow Q direction, the teeth 63 come into contact with the meshing portion 87 of the multi-link tip portion 83 of the main body member 70 constituting the chain 80. As described above, the meshing portion 87 is substantially perpendicular to the axial direction of the arm 81. That is, the teeth 63 provided in parallel contact the meshing portion 87 substantially perpendicular to the moving direction of the chain 80, and can transmit the force to the chain 80 (in the direction of arrow O and P in the figure).
JP 2007-170602 A

However, although the offset chain as in Patent Document 1 can be used regardless of the rotation direction of the sprocket, the pair of offset plates and bushes are separate, which increases the number of parts, which increases the cost. In addition, for application to a large conveyor or the like to which a heavy load is applied, there is a problem that the cost is further increased because it is necessary to significantly increase the thickness.

Further, the chain 80 shown in FIGS. 9 and 10 is integrated with the main body member 70 so as to be able to withstand a heavy load, and can be applied to a relatively large transport device or the like. Has a meshing portion 87 that is substantially perpendicular to the traveling direction of the chain 80, and the teeth 63 of the sprocket 61 and the meshing portion 87 are contacted substantially perpendicular to the traveling direction of the chain 80. Can be communicated.

However, when the sprocket 61 is rotated in the reverse direction, the teeth 63 and the multi-link root portion 85 come into contact with each other, and the multi-link root portion 85 has a tapered shape, so that the teeth 63 of the sprocket 61 are substantially perpendicular to the traveling direction of the chain 80. Since a large force is locally applied to the contact portion, the chain 80 or the sprocket 61 may be damaged. That is, the multiple link root portion 85 and the teeth 63 cannot be reliably engaged with each other.

For this reason, there is a problem that the chain 80 can be used only in one direction and can be applied only to a transporting device or the like that operates only in one direction. In addition, since it always operates in the same direction, only the multi-link tip 83, which is a portion that contacts the tooth 63, is significantly worn. However, the chain 80 is reversed and the tooth 63 and the multi-link root 85 are Therefore, when wear of the multi-link tip 83 progresses, the chain 80 must be newly replaced, and there is a problem that the life of the chain 80 is short.

The present invention has been made in view of such a problem, and is capable of dealing with any rotation direction of the sprocket, capable of moving in both directions, and a high-strength chain that can be applied to a relatively large conveyor or the like. The purpose is to provide.

To achieve the above-described object, the present invention provides a multi-link portion having a pair of links provided with a first pin hole, and a single link portion having a single link provided with a second pin hole. A main body member comprising: an arm portion that connects the multi-link portion and the single link portion; the first pin hole of the multi-link portion; and the single link portion of the adjacent main body member. A pin that penetrates through the second pin hole and rotatably connects the multiple link portion and the single link portion, and a tip portion of the multiple link portion and a base portion of the multiple link portion, Engagement portions that are substantially perpendicular to the axial direction of the arm portion are provided, and the engagement portion of the tip portion and the engagement portion of the root portion are substantially the same as the teeth of the sprocket meshing with the main body member and the traveling direction of the main body member. Be able to contact vertically Is a chain which is characterized.

The main body member may be provided with a rib, and the arm portion may further include an attachment mounting portion.

According to the present invention, the multi-link root portion and the multi-link tip are provided with meshing portions in a direction substantially perpendicular to the axial direction of the arm. The meshing part of the part or the meshing part of the multi-link root part can contact the sprocket teeth and the direction of travel of the chain substantially perpendicularly, so that a chain that can rotate in both directions can be provided. Moreover, if a rib is provided on the main body member constituting the chain, the strength and weight can be reduced. Further, if the main body member having an attachment mounting portion is used on the chain, the attachment can be attached. A chain can be provided.

According to the present invention, it is possible to provide a high-strength chain that can be applied to any rotation direction of the sprocket, can move in both directions, and can be applied to a relatively large conveyor or the like.

Hereinafter, embodiments of the present invention will be described in detail. 1 and 2 are views showing the main body member 1 constituting the chain 40 according to the present embodiment. FIG. 1A is a perspective view of the main body member 1, and FIG. It is a top view. 2 (a), 2 (b), and 2 (c) are an AA sectional view, a BB sectional view, and a CC sectional view of FIG. 1 (b), respectively. The chain 40 is used for a relatively large transport device or the like. For this reason, the chain 40 requires high strength.

The main body member 1 is mainly composed of a single link portion 9 having a single link 3, a multiple link portion 11 having a pair of links 5, an arm 13 for connecting the single link portion 9 and the multiple link portion 11, and the like. The The link 3 is provided with a pin hole 7 in the center. A rib 25 a is provided around the pin hole 7, and a rib 25 b is provided on the outer periphery of the link 3.

A pin hole 8 is provided at the center of the link 5. In the multiple link portion 11, a pair of links 5 are provided so as to face each other so that the axes of the respective pin holes 8 coincide. A rib 25 d is provided around the pin hole 8 provided in the link 5, and a rib 25 e is provided on the outer periphery of the link 5. The single link portion 9 provided with the link 3 and the multiple link portion 11 provided with the link 5 are connected by an arm 13. That is, the single link 3 and the pair of links 5 are connected by the arm 13.

A rib 25 c is provided on the outer periphery of the arm 13. As shown in FIG. 2, the ribs 25 a, 25 b, 25 c, 25 d, 25 e are provided approximately on both sides of the main body member 1. Moreover, although the material of the main body member 1 is not specified, steel can be used, for example, In this case, it can manufacture by casting, forging, etc.

The distal end side of the multiple link portion 11 in the main body member 1 is the multiple link distal end portion 17, and a meshing portion 21 that is substantially perpendicular to the axial direction of the arm 13 is provided. The axial direction of the arm 13 coincides with the traveling direction of the main body member 1 (chain 40). The vicinity of the connecting portion between the multiple link portion 11 and the arm 13 is a multiple link root portion 19, and a meshing portion 23 that is substantially perpendicular to the axial direction of the arm 13 is provided.

3 is a view showing the main body member 30 constituting the chain 40, FIG. 3 (a) is a perspective view showing the main body member 30, and FIG. 3 (b) is a plan view of the main body member 30. 4 (a), 4 (b), and 4 (c) are a DD sectional view, an EE sectional view, and an FF sectional view, respectively, of FIG. 3 (b). The main body member 30 has substantially the same structure as the main body member 1. Accordingly, components having the same functions and effects as those of the main body member 1 are denoted by the same reference numerals as those of the main body member 1, and redundant description is omitted.

The main body member 30 is different from the main body member 1 in that it has an attachment mounting portion 31, but the other components are the same. The main body member 30 mainly includes a single link portion 9 having a single link 3, a multiple link portion 11 having a pair of links 5, an arm 13 connecting the single link portion 9 and the multiple link portion 11, and an attachment mounting portion 31. Etc.

The attachment mounting portion 31 is provided on the arm 13. The attachment attachment part 31 is a part for attaching an attachment 49 to be described later, and is a plate-like part material having attachment holes 33 at four corners and a constricted center. As shown in FIG. 4, the main body member 30 is provided with ribs 25 a, 25 b, 25 c, 25 d, and 25 e, similar to the main body member 1.

The distal end side of the multiple link portion 11 of the main body member 30 is the multiple link distal end portion 17, and the connecting portion side of the multiple link portion 11 and the arm 13 is the multiple link root portion 19. The multi-link distal end portion 17 and the multi-link root portion 19 are respectively provided with a meshing portion 21 and a meshing portion 23 that are substantially perpendicular to the axial direction of the arm 13. The attachment attachment portion 31 may be formed integrally with the main body member 30 or may be processed separately and joined by welding or the like.

5A and 5B are diagrams showing the chain 40. FIG. 5A is a plan view of the chain 40 and FIG. 5B is a side view of the chain 40. FIG. The chain 40 is mainly composed of the main body member 1, the main body member 30, a pin 41, a retaining member 43, and the like.

The single link portion 9b of the adjacent main body member 1b is disposed in the multiple link portion 11a of the main body member 1a. That is, the link 3b of the main body member 1b is sandwiched between the pair of links 5a of the main body member 1a, and at this time, the pin holes 7 and the pin holes 8 of the links 3b and 5a are arranged in a straight line. The A pin 41 is inserted into the pin hole 7 and the pin hole 8 of the link 3b and the link 5a. The pin 41 passes through the pin hole 7 of the link 3b and the pin hole 8 of the pair of links 5a. The end portion of the pin 41 protrudes from one pin hole 8, and a groove 45 is provided on the outer peripheral surface near the end portion of the protruding pin 41 in a direction perpendicular to the axial direction of the pin 41.

The groove 45 is provided with a plate-like stopper 43. The stopper 43 is joined to the main body member 1 by welding or the like. That is, the pin 41 is fixed by the stopper 43 fitted in the groove 45, so that the pin 41 does not fall off from the chain 40. Moreover, since the diameter of the pin hole 7 and the pin hole 8 is sufficiently larger than the outer diameter of the pin 41, the main body members 1a and 1b are rotatably connected. In addition, although the material of the pin 41 and the retaining member 43 is not specified, it may be made of steel, for example, and considering the corrosion resistance, it is desirable that the material is the same as that of the main body member 1 or the main body member 30.

Similarly, the single link portion 9c of the main body member 30 and the multiple link portion 11b of the main body member 1b are rotatably connected by the pin 41 and the retaining member 43. The main body member 30 is provided for every fixed number of connections of the main body member 1. For example, one main body member 30 may be connected each time two main body members 1 are connected. Note that an attachment 49 having a skewer 47 described later is attached to the attachment attachment portion 31 of the main body member 30.

Next, the conveyance device 50 using the chain 40 will be described. 6A and 6B are diagrams illustrating the transport device 50 using the chain 40, in which FIG. 6A is a plan view of the transport device 50, and FIG. 6B is a side view of the transport device 50. FIG. In addition, illustration of the sprocket 51 is abbreviate | omitted in Fig.6 (a). The transport device 50 mainly includes a pair of chains 40a and 40b, a sprocket 51, a motor (not shown) that drives the sprocket 51, an attachment 49 provided on the chains 40a and 40b at regular intervals, and the like. A pair of sprockets 51 is provided for one chain 40. That is, the transport device 50 is provided with a total of four sprockets for the pair of chains 40a and 40b.

Both or one of the sprockets 51a and 51b is connected to a motor (not shown) and is rotated by the motor. A plurality of teeth 53 are provided on the outer circumferences of the sprockets 51 a and 51 b, and the teeth 53 mesh with the main body member 1 or the main body member 30 constituting the chain 40.

A plate-like attachment 49 is joined to the attachment mounting portion 31 of the main body member 30 constituting the chain 40. The attachment 49 is joined to the chain 40 by a bolt or the like in the attachment hole 33 of the attachment attachment portion 31. The attachment 49 is provided with a plurality of plate-like skewers 47 facing outward.

As shown in FIG. 6 (b), when the sprocket 51a or sprocket 51b is rotated in the direction of arrow G by the motor, the teeth 53 provided on the sprockets 51a and 51b mesh with the chain 40, and the chain 40 is connected to the sprockets 51a and 51b. As a result of the rotation, the whole rotates.

The transporting device 50 drives the chain 40 by the rotation of the sprocket 51, and as shown in FIG. 6B, the transported object 55 placed below the transporting device 50 is scraped up by the attachment 49 and the skewer 47, and the arrow Carry in the H direction. The transported material 55 is, for example, an intermediate processed product of agricultural crops, and the transporting device 50 is used for transporting a relatively large and large-scale product. Therefore, a high-strength chain 40 is used for the transport device 50.

7A and 7B are diagrams showing the meshing between the chain 40 and the sprocket 51, in which FIG. 7A is a plan view of the chain 40, and FIG. 7B is a side view of the chain 40. FIG. The attachment 49 and the skewer 47 are not shown. A pair of teeth 53 are provided in parallel in the width direction of the sprocket 51, and a plurality of pairs of teeth 53 are provided at regular intervals in the circumferential direction of the sprocket 51. The pitch in the circumferential direction of the teeth 53 provided on the sprocket 51 coincides with the connection pitch between the main body member 1 and the main body member 30 of the chain 40.

As shown in FIG. 7B, when the sprocket 51 rotates in the arrow K direction, the teeth 53 come into contact with the meshing portion 21 at the multi-link distal end portion 17 of the main body member 1 or the main body member 30 constituting the chain 40. . The meshing portion 21 is substantially perpendicular to the axial direction of the arm 13. In other words, the meshing portion 21 can contact the teeth 53 perpendicular to the traveling direction (force direction) of the teeth 53. For this reason, the driving force from the teeth 53 is efficiently transmitted to the meshing portion 21 in the traveling direction of the chain 40. Note that an arrow I in FIG. 7A and an arrow J in FIG. 7B indicate the direction of force transmission from the teeth 53 to the chain 40.

Next, the meshing between the chain 40 and the sprocket 51 when the sprocket 51 rotates in the reverse direction will be described. FIG. 8A is a plan view of the chain 40, and FIG. 8B is a side view of the chain 40. As shown in FIG. 8B, when the sprocket rotates in the reverse direction and rotates in the direction of arrow N, the teeth 53 are engaged with the meshing portion 23 in the main body member 1 constituting the chain 40 or the multiple link root portion 19 of the main body member 40. Contact.

The meshing portion 23 is substantially perpendicular to the arm 13. For this reason, the meshing portion 23 comes into contact with the teeth 53 substantially perpendicular to the traveling direction of the chain 40. That is, the meshing portion 23 can contact the teeth 53 perpendicular to the traveling direction (force direction) of the teeth 53. For this reason, the driving force from the teeth 53 is efficiently transmitted to the meshing portion 23 in the traveling direction of the chain 40. The arrow L in FIG. 8A and the arrow M in FIG. 8B indicate the direction of force transmission from the teeth 53 to the chain 40.

Thus, according to the chain 40 concerning this embodiment, the single link part 9 and the multiple link part 11 are integrated, and the high intensity | strength chain 40 can be obtained. The multi-link tip 17 and the multi-link root 19 each have a meshing portion 21 and a meshing portion 23 that are substantially perpendicular to the axial direction of the arm 13, and the mesh 53 and the meshing portion 21 of the sprocket 51 that meshes with the chain 40. The meshing portion 23 can be brought into contact with the traveling direction of the chain 40 substantially perpendicularly.

For this reason, the teeth 53 can transmit force to the meshing portion 21 or the meshing portion 23 of the chain 40 substantially perpendicular to the traveling direction. That is, regardless of the direction of rotation of the sprocket 51, the chain 40 can receive force more efficiently than the sprocket 51, and can move in both directions according to the direction of rotation of the sprocket 51.

Moreover, since the ribs 25a, 25b, 25c, 25d, and 25e are provided in the single link part 9, the multiple link part 11, and the arm 13, respectively, the high-strength and lightweight chain 40 can be obtained. Moreover, if the main body member 30 having the attachment attachment portion 31 is used for the chain 40, the attachment 49 can be easily attached to the chain 40, and the chain 40 suitable for a relatively large transport device or the like can be obtained.

As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

For example, in the chain 40, it is not necessary to provide all of the ribs 25a to 25e, and only one part of the ribs 25a to 25e may be provided as necessary. In the transport device 50, the sprocket 51 is rotatable in both directions, but the chain 40 is effective even when the sprocket 51 rotates only in a single direction. That is, if the wear of the multi-link tip 17 has progressed due to contact between the multi-link tip 17 of the chain 40 and the teeth 53, the sprocket 51 can be rotated in the same rotational direction if the entire chain 40 is reversed. Even if it exists, since the multiple link root part 19 and the tooth | gear 53 which abrasion does not advance mesh | engage, the lifetime of the chain 40 can be extended.

2A and 2B are views showing the main body member 1, in which FIG. 1A is a perspective view of the main body member 1, and FIG. It is sectional drawing of the main body member 1, (a) is AA sectional drawing of FIG.1 (b), (b) is BB sectional drawing of FIG.1 (b), (c) is FIG.1 (b). CC sectional drawing. 3A and 3B are views showing the main body member 30, wherein FIG. 3A is a perspective view of the main body member 30, and FIG. It is sectional drawing of the main-body member 30, (a) is DD sectional drawing of FIG.3b), (b) is EE sectional drawing of FIG.3 (b), (c) is FF of FIG.3 (b). F sectional drawing. It is a figure which shows the chain 40, (a) is a top view of the chain 40, (b) is a side view of the chain 40. It is a figure which shows the conveying apparatus 50 which uses the chain 40, (a) is a top view of the conveying apparatus 50, (b) is a side view of the conveying apparatus 50. It is a figure which shows mesh | engagement of the chain 40 and the sprocket 51 when the sprocket 51 rotates to the K direction, (a) is a top view, (b) is a side view. It is a figure which shows mesh | engagement of the chain 40 and the sprocket 51 when the sprocket 51 rotates to N direction, (a) is a top view, (b) is a side view. 2A and 2B are views showing a conventional main body member, wherein FIG. 1A is a perspective view of the main body member and FIG. It is a figure which shows mesh | engagement of the chain 80 and the sprocket 61 when the sprocket 61 rotates to Q direction, (a) is a top view, (b) is a side view.

Explanation of symbols

1, 30 ......... Main body members 3, 5 ......... Links 7, 8 ......... Pin hole 9 ......... Single link portion 11 ......... Multi-link portion 13 ......... Arms 17 ......... Multi-link tip 19 ......... Multiple link root parts 21, 23 ......... Interlocking part 25 ......... Rib 31 ......... Attachment mounting part 33 ......... Mounting hole 40 ......... Chain 41 ......... Pin 43 ......... Prevention 45 ......... Groove 47 ......... Skewer 49 ......... Attachment 50 ......... Transport Device 51 ......... Sprocket 53 ......... Tooth 55 ......... Transported Material 61 ......... Sprocket 63 ......... Tooth 70 ... ...... Main body members 71, 72 ......... Pin holes 73, 75 ......... Link 77 ......... Single link portion 79 ......... Multi-link portion 80 ......... Chain 81 ......... Arm 83 ......... Multi-link tip Part 85 ......... Multiple link root part 87 ..... Intermeshing part

Claims (3)

A multiple link portion having a pair of links provided with a first pin hole, a single link portion having a single link provided with a second pin hole, and the multiple link portion and the single link portion; A main body member comprising: an arm part to be coupled;
Passing through the first pin hole of the multiple link part and the second pin hole of the single link part of the adjacent main body member, the multiple link part and the single link part are rotatably connected. With a pin to
Comprising
The tip portion of the multi-link portion and the base portion of the multi-link portion are each provided with a meshing portion substantially perpendicular to the axial direction of the arm portion,
The chain is characterized in that the meshing part of the tip part and the meshing part of the base part can contact the teeth of the sprocket meshing with the main body member substantially perpendicularly to the traveling direction of the main body member. The chain according to claim 1, wherein the main body member is provided with a rib. The chain according to claim 1, further comprising an attachment mounting portion on the arm portion.

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