JP2018003933A - Joint device and joint method of double row seal chain, and double row seal chain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a double row seal chain requires troublesome and difficult work that between inner links of end parts, an intermediate plate is inserted through a seal ring.SOLUTION: A ended double row seal chain 1 has both end parts comprising intermediate plates 17, 17connected by a joint pin 29. The joint pin 29 is inserted into the intermediate plate 17, and then a seal ring 12, an inner ring 6, the seal ring 12 and a joint plate 27 are sequentially inserted from both ends of the intermediate plate, and anti-loosed and locked by a clip 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a double-row seal chain in which chains are arranged in double rows in the width direction and lubricating oil (grease) is sealed between pins and bushes, and more specifically, a joint device, a joint method, and a double joint for connecting the chains endlessly. It relates to a row seal chain.

  Generally, a roller chain is used as an endless shape by winding an end chain on a sprocket and connecting both ends thereof with a joint device. The joint device has a pin plate (an upright plate) in which a pair of pins are implanted, and the pins of the pin plate are inserted into the bushes at both ends of the roller chain formed of the inner link with a seal ring interposed therebetween, Further, after inserting the pin into a joint plate made of an outer plate, the roller chain is connected endlessly by engaging a clip with the groove of the protruding pin (see, for example, Patent Document 1).

  Conventionally, a pin plate having a long leg is used even in a double row chain, for example, a double row chain, and a bush of one inner link, an intermediate plate, and a bush of the other inner link are interposed on the long pin with a seal ring interposed. Then, the joint plate is inserted, and the clip is engaged with and connected to the protruding groove of the pin.

Japanese Patent Laying-Open No. 2015-52340

  Even in the seal chain, the single-row roller chain can be connected to the chain relatively easily by engaging the clip with the groove of the protruding pin in a state where the joint plate is pressed to compress the seal ring.

  However, in a double-row chain, for example, a double-row roller chain, the above-mentioned pins are inserted into the bushes with the inner ring links in one chain aligned in series and the seal ring fitted on the pins of the pin plate. Place the intermediate plate with a seal ring at the tip of the pin. Then, a seal ring is interposed on the other side surface of the intermediate plate, and the inner links at both ends of the other chain in the standing state are tilted so as to align with the inner links at both ends of the one chain. The seal ring interferes and becomes a difficult operation, and a troublesome and time-consuming operation such as prevention of twisting of the seal ring using a thin guide plate is forced. Further, with the inner link of the other chain aligned with the inner link of one chain, the pin of the pin plate is inserted into the bush of the inner link of the other chain, and the seal plate is interposed between the outer plate and the outer plate. The joint of the two-row roller chain is completed by inserting a joint plate into the pin and engaging the clip with the groove of the protruding pin.

  It is an object of the present invention to provide a double-row seal chain joint device, a joint method, and a double-row seal chain using or using the same, which eliminate the above-mentioned difficult and troublesome work and solve the above-mentioned problems. It is what.

In the present invention, for example, referring to FIG. 1, a double-row inner link (6) and an outer link (10) fit a pin (9) of the outer link to a bush (3) of the inner link (6). A seal ring (12), which is inserted and alternately connected, and is arranged so as to project the bush (3) from the inner plate (2) of the inner link (6) by a predetermined amount so as to surround the projecting portion (3a). In the joint device of the double row seal chain (1) sandwiched between the inner plate (2) of the inner link (6) and the outer plate (7) or intermediate plate (17) of the outer link (10). ,
The intermediate plate (17 ₁ ) is attached to both ends of the double row seal chain (1) between the inner links (6 ₁ , 6 ₁ ) arranged adjacent to each other in the width direction. Arranged connected by a joint pin (29) having a joint (29a),
The number of double rows in the width direction of the inner link (6) of the double row seal chain (1) is n, and the n inner links (6 ₂ ) and two locking engagement portions at both ends. The joint pin (29) having (29a), 4n + 4 seal rings (12), four joint plates (27) corresponding to the outer plate (7), and the retaining engagement portion ( 29a) and a retaining member (30) for engaging the joint plate (22) with the joint pin (29) as a set.
In the joint device (20) of the double-row seal chain characterized by the above.

Preferably, the double row seal chain is a double row seal chain (1), and the n is 2.
The retaining member engages over the retaining engagement portions (29a, 29a) of two adjacent joint pins (29, 29), and engages the one joint plate (27). Clip (30) to stop.

Double-row inner links (6) and outer links (10) are alternately connected by inserting the pins (9) of the outer links (10) into the bushes (3) of the inner links (6), and The bush (3) protrudes from the inner plate (2) of the inner link (6) by a predetermined amount, and a seal ring (12) arranged so as to surround the protruding portion (3a) is provided on the inner link (6). In the joint method of the double row seal chain (1) sandwiched between the inner plate (2) and the outer plate (7) or the intermediate plate (17) of the outer link (10),
The intermediate plate (17 ₁ ) is attached to both ends of the double row seal chain (1) between the inner links (6 ₁ , 6 ₁ ) arranged adjacent to each other in the width direction. Arranged connected by a joint pin (29) having a joint (29a) (see, for example, FIG. 2),
The joint pin (29) having retaining engagement portions (29a, 29a) at both ends is provided on the intermediate plates (17 ₁ , 17 ₁ ) located at both ends in the longitudinal direction of the double row seal chain (1 ₁ ). A step of inserting (see, for example, FIG. 3);
Inserting the seal ring (12, 12) into the inserted pair of joint pins (29, 29) from both ends thereof (see, for example, FIG. 4);
The inner links (6 ₂ , 6 ₂ ) are inserted into the pair of joint pins (29, 29) from both ends thereof, and the bush protrusions (3a) and the intermediate plate (17) of the inner links are inserted. ₁ ) and sandwiching the seal ring (12, 12) between them (see, for example, FIG. 5),
Inserting the seal ring (12, 12) into the pair of joint pins (29, 29) from both ends thereof (see, for example, FIG. 6);
A joint plate (27, 27) across the pair of joint pins (29, 29) and a joint pin (29, 29) disposed at the end of the double row seal chain (1) adjacent to the joint pin In the state where the joint plates (27) at both ends in the width direction are pressed inward in the width direction, the retaining member (30) is secured to the retaining engagement portions (29a, 29) of the joint pins (29, 29). 29a) engaging the coupling plate (27) (see, for example, FIG. 7);
And a joint method for a double-row seal chain.

For example, referring to FIG. 1 (a), an inner link row (6) in which a plurality of inner links (6) in which both ends of a pair of inner plates (2, 2) are joined by bushes (3, 3) is arranged ( R1) and an outer link row (R2) having an intermediate plate (17) joined to both ends of the outer plate (7, 7) on the outer side in the width direction with pins (9, 9). The intermediate plate (17) is sandwiched between the adjacent inner links (6, 6), the pins (6) are inserted into the bushes (3) and alternately connected, and the bushes (3) are connected. A predetermined amount protrudes from the inner plate (2), and a seal ring (12) is interposed between the inner plate (2) and the outer plate (7) or the intermediate plate (17) so as to surround the protruding portion (6a). And the bearing (13) between the bush (3) and the pin (9) Namerayu in double row sealing chain (1) which holds the,
Intermediate plates (17 ₁ , 17 ₁ ) connected to the inner link rows (6 ₁ , 6 ₁ ) via joint pins (29) having retaining engagement portions (29a) at both ends at both longitudinal ends. In the double row seal chain (1) that can be connected by the joint device or the joint method.

For example, referring to FIG. 7, an inner link row (R1) in which a plurality of inner links (6) in which both ends of a pair of inner plates (2, 2) are joined by bushes (3, 3) are arranged in the width direction; The outer link row (R2) having an intermediate plate (17) loosely coupled to both ends of the outer plate (7, 7) on the outer side in the width direction is connected with the pin (9, 9). The intermediate plate (17) is sandwiched between the inner links (6, 6), the pins (9) are inserted into the bushes (3) and alternately connected, and the bushes (3) are connected to the inner plates. Projecting a predetermined amount from (2), and interposing a seal ring (12) between the inner plate (2) and the outer plate (7) or the intermediate plate (17) so as to surround the protruding portion (3a), Lubricating oil in the bearing (13) between the bush (3) and the pin (9) In holding the double row sealing chain (1),
Four joint pins (29) having retaining engagement portions (29a, 29a) at both ends are arranged in succession instead of the pins (9), and the adjacent joint pins (29, 29) A joint plate (27) is connected in place of the outer plate (7), and a retaining member (30) engages with the retaining engagement portion (29a) of the joint pin (29), thereby the joint. The plate (27) is in the endless double-row seal chain (1 ₁ ) joined by the joint device or the joint method, which is engaged with the joint pin (29).

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, it does not have any influence on the structure of a claim by this.

  The joint device according to the present invention has a simple configuration that does not require a special part such as a joint link, and a double row seal chain in which an intermediate plate is connected to the inner link at both ends via a joint pin. It is possible to easily endlessly connect the intermediate plate without requiring a difficult and troublesome operation of inserting the intermediate plate with a seal ring interposed therebetween.

  The joint method according to the present invention includes a double-ended seal with a simple operation in which a seal ring, an inner link, a seal ring, and a joint plate are sequentially inserted from both ends of a joint pin, and are retained and locked by a retaining member. The chain can be easily joined endlessly.

  A double row seal chain of 3 rows or more requires a troublesome work of inserting an inner link between two intermediate plates via a seal ring. The simple work of inserting each part sequentially is sufficient for both ends of the pin. Even in a double-row chain of three or more rows, the intermediate plate is loosely connected to the joint pin, and the plate thickness (length in the width direction) is thinner than the inner link. The inner link and the seal ring can be inserted relatively easily.

  If the both ends in the longitudinal direction are made of an intermediate plate connected to the inner link via a joint pin, it can be easily joined endlessly while being a double row seal chain.

  The endless double-row seal chain joined by the joint device or the joint method has four joint pins arranged continuously in part, and the four joint pins have two outer sides. Although it is spliced by the joint plate, it has a large transmission capacity and tensile strength based on the double-row chain, and has wear resistance (chain life) based on the seal chain.

(A) is the top view which carried out the partial cross section which shows the seal chain joined by the coupling apparatus which concerns on this invention. (B) is a figure which shows the components which comprise the said coupling apparatus. The top view which shows the double row seal chain of the state joined by the coupling apparatus. The top view which shows the state joined by the coupling apparatus. The top view which shows the state joined by the coupling apparatus. The top view which shows the state joined by the coupling apparatus. The top view which shows the state joined by the coupling apparatus. The top view which shows the double row seal chain of the state joined by the coupling apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The two-row (double-row) seal chain 1 according to the present embodiment is used for power transmission or conveyance. As shown in FIG. 1 (a), the first-row chain 1a and the second-row chain 1b are connected to each other. It is configured to be connected in the horizontal direction by a common pin. Each of the chains 1a and 1b in a single row formed of a single-row seal chain has an inner link 6 in which both ends of a pair of inner plates 2 and 2 are coupled by bushes 3 and 3 and a roller is rotatably fitted on the bush 3. And an outer link 10 in which pins 9, 9 are connected to both ends of a pair of outer plates 7, 7, and pins 9 are inserted into bushes 3 and alternately connected.

The pin 9 is a long pin that is commonly inserted into the first and second rows of chains 1a and 1b, and the outer plate located between the two chains is thicker than the pair of outer plates 7 on the outside. The intermediate plate 17 has a thickness less than or equal to the thickness of the two sheets. The outer plates 7 and 7 on the outer sides of both chains 1a and 1b have pins 9 fixed to the pin holes by press-fitting or caulking, so-called interference fitting (fitting), and the pin holes 17a of the intermediate plate 17 have pin diameters. It is set larger and is in a loose relationship with the pin 9. That is, two rows seal chain 1 ₁ is provided with inner link 6 double row in the width direction (two rows) arranged inside links (roller links) column R1, the intermediate plate to the pin 9 fixed to the outer plates 7, 7 17 includes an outer link row R2 in which the intermediate plate 17 is loosely engaged, and the intermediate plate 17 is sandwiched between the inner links 6 and 6 adjacent in the width direction. The link row R2 is alternately connected.

  The inner link 6 has a bush 3 projecting from the outer surfaces of the inner plates 2 and 2 by a predetermined amount, and a seal ring 12 is disposed so as to surround the bush projecting portion 3a. The seal ring 12 is sandwiched between the inner plate 2 and the outer plate 7 or the intermediate plate 17 in a predetermined compression state, and grease (lubricating oil) applied to the bearing portion 13 between the pin 9 and the bush 3 is applied. Hold.

As shown in FIG. 1 (a), the two-row seal chain 1 has a single end shape. When the two-row seal chain 1 is not connected to the endless shape, both ends are connected to the inner links 6 ₁ , 6 ₁ , and consisting of the intermediate plate 17 _1. Inner link 6 _1, 6 ₁ of the chain end portions, on the other hand although the side is connected to the outer link 10 adjacent by the pin 9 is caulked, and the other (distal) side is inserted joint pin 29 to be described later cage, the intermediate plate 17 ₁ is connected to該継hand pin 29.

Since the intermediate plates 17 ₁ , 17 _{1 at} both ends are assembled at the same time when the two single-row chains 1 a, 1 b are assembled, like the other intermediate plates 17, it is easy even if the seal ring 12 is interposed. It is assembled. Incidentally, the distal end side joint pin 29 of the inner link ₆₁ is, in the unused state, but will not fall disconnect by the bearing portion 13 grease applied to the inner link ₆₁ by temporarily fixing jig It is also possible to lock it temporarily and temporarily.

As shown in FIG. 1B, the joint device 20 includes two inner links 6 ₂ , two joint pins 29, four joint plates 27, twelve seal rings 12, four clips 30, In addition, it consists of a bag filled with grease, and these parts are collected in one set and stored in a bag or box.

Inner link 6 ₂ are the same ones used with the inner link 6 for use in the seal chain 1. That is, the bush that supports the roller 5 in a loosely fitted state is coupled to the pair of inner links 2 and 2. The joint pin 29 has the same diameter as the pin 9 used in the seal chain 1, but is configured to be slightly longer than the pin 9, and has engagement grooves (prevention engagement portions) 29a and 29a at both ends thereof. Tapered portions 29b and 29b are formed on the tip side. The joint plate 27 has the same outer shape as the outer plate 7 of the seal chain 1, and the pin holes 27a and 27a have a slightly larger diameter. That is, the outer plate 7 is slightly smaller than the pin diameter so that the pin hole is tightly fitted (fitted) to the pin 9, but the pin hole 27 a of the joint plate 27 is formed on the joint pin 29. On the other hand, it is slightly larger than the pin diameter so as to have a loose relationship. In order to secure the maximum allowable tension, the same joint plate 27 as the outer plate 7 may be used. In this case, the joint plate 27 is press-fitted and attached to the joint pin 29.

  The seal ring 12 is the same as the seal of the seal chain 1 and can be applied to any shape such as a circular cross-sectional shape or a lip-shaped one. In particular, Japanese Patent No. 4756537, Patent The one shown in Japanese Patent No. 5415316 is preferable.

  The clip 30 is made of an elastic steel plate and has a pair of engaging portions 31 and 32. One engaging portion 31 is formed at the end of a long hole 33 that is widened and the other engaging portion. The part 32 is connected to the introduction part 35 that extends toward the outer shell. The long hole 33 and the introduction portion 35 are formed with tapers 33a and 35a toward the surface. The clip 30 is not limited to the above shape (M clip), and any clip can be applied. Further, a retaining member other than a clip such as a split pin and a spring pin can be applied.

Next, a method for jointing the two-row seal chain 1 using the joint device 20 will be described with reference to FIGS. As shown in FIG. 2, the two-row seal chain 1 is placed so that the intermediate plates 17 ₁ and 17 ₁ located at both ends thereof are opposed to each other. Then, as shown in FIG. 3, the joint pin 29 of the joint device 20 is inserted into the tip side pin holes of the intermediate plates 17 ₁ , 17 ₁ at both ends of the chain. Incidentally, the intermediate plate ₁₇ 1, 17 ₁ of the inner link ₆₁ of the second column by fitting pins 29 and 29 to the other pin hole having the same retaining engagement portion, ₆₁ is connected.

Next, as shown in FIG. 4, seal rings 12 (four in total) are inserted from both end sides of the joint pins 29, 29 inserted into the intermediate plates 17 ₁ , 17 ₁ , respectively, and both surfaces of the intermediate plate 17 ₁ are inserted. Close to. Then, as shown in FIG. 5, the inner links 6 ₂ and 62 are respectively inserted into the _two joint pins 29 and 29 from both ends in a state where grease is uniformly applied to the joint pins 29 and 29. bush protruding portions 3a distal end of the link _{6 2} is brought into contact with the seal ring 12 and 12, these seal rings 12 are sandwiched between the inner links _{6 2} bush protruding portion 3a and the intermediate plate 17 _1. Then, as shown in FIG. 6, from each end side four joint pins 29 ... in connecting to the joint portion by inserting the seal ring 12 ... (the total of four), each of the seal ring 12, the inner link 6 ₂ It abuts against the bush protrusion 3a.

As shown in FIG. 7, four joint plates 27, which are outer plates on both outer sides, are fitted into a pair of four joint pins 29 of a continuous joint portion from both ends thereof. Then, in a state where the joint plates 27 and 27 are pressed from both sides by using a tightening jig, each clip 30 is engaged with the engagement groove 29a of the two adjacent joint pins 29 on the outside of each joint plate 27. Match. At this time, if the clip 30 has the tapers 35a and 33a, when the engaging portions 32 and 31 of the clip 30 are engaged with the engaging groove 29a, a force in a direction of pressing the seal ring 12 acts on the clip 30. This makes it easy to attach clips. Due to the movement of the joint plate 27 toward the inner side in the chain width direction when the clip 30 is mounted, each seal ring 12 is twisted so as to surround the outer periphery of the projecting portion 3a of the bush 3, and the inner plate 2 and the joint are connected. plate 27 or is compressed between the intermediate plate 17 _1, to seal the grease of the bearing portion 13 (lubricating oil).

Thereby, the intermediate plate 17 _1, 17 ₁ having ends two rows seal chain 1 assembled at both ends, and both ends are spliced by using the coupling device 20, the endless two rows seal chain 1 _1. At this time, the second column the seal chain 1 ₁ of the chromatic edge is made both ends thereof from the intermediate plate 17 _1, 17 _2, to insert the joint pin 29 to the distal end side pin holes of these intermediate plates, these joints By inserting the seal ring 12, the inner link 6 ₂ , the seal ring 12, and the joint plate 27 sequentially into the pin 29 from both ends, the clip 30 is locked to a pair of joint pins 29 adjacent in the longitudinal direction. Can be joined endlessly.

  If the double-row seal chain has three or more rows, it is necessary to insert an inner link between two intermediate plates with a seal ring interposed between them, but the intermediate plate is loosely connected to the joint pin. And, the plate thickness, which is the interval in the width direction, is significantly thinner than the interval in the width direction of the inner links, and it can be easily expanded in the width direction compared to expanding the inner links at both ends of the chain as in the past. The inner link can be inserted through the seal ring.

  Although the above-described embodiment has been described with a two-row seal chain, the present invention is not limited to this and can be similarly applied to a double-row seal chain of three rows, four rows, and the like. The intermediate plate 17 may be a stack of two outer plates. Although described with a roller chain, the present invention can be similarly applied to a bush chain without a roller.

Coupling device 20 are the for two rows seal chain, the inner links 6 ₂ 2, although the seal ring 12 is 12, if n rows seal chain, the inner links of n, the seal ring (4n + 4 ), 2 joint pins and 4 joint plates are the same.

1 Double row (2 rows) seal chain (end)
1 ₁ Double row (2 rows) seal chain (endless)
The second plate 3 bush 3a protruding portion 6 in the link 6 ₁ both end portions of the inner link 6 in a _second joint link 7 the outer plate 12 sealing ring 13 bearing portion 17 the intermediate plate 17 ₁ across the intermediate plate 20 coupling devices 27 coupling plate 29 coupling Pin 29a Locking engagement part (groove)
30 retaining member (clip)
R1 inner link row R2 outer link row

Claims (5)

Double-row inner links and outer links are alternately connected by inserting the pins of the outer links into the bushes of the inner links, and the bushes protrude from the inner plates of the inner links by a predetermined amount, In a joint device for a double-row seal chain in which a seal ring arranged so as to surround is sandwiched between the inner plate of the inner link and the outer plate or intermediate plate of the outer link,
Both ends of the double row seal chain in the longitudinal direction are arranged by connecting the intermediate plates between the inner links arranged adjacent to each other in the width direction by joint pins having retaining engagement portions at both ends,
The number of double rows in the width direction of the inner links of the double row seal chain is n, the n inner links, the joint pins having the retaining engagement portions at both ends, and 4n + 4 One set includes a seal ring, four joint plates corresponding to the outer plate, and a retaining member that engages with the retaining engagement portion and locks the joint plate to the joint pin. Become,
A joint device for a double-row seal chain. The double row seal chain is a double row seal chain, and the n is 2.
The retaining member is a clip that engages over the retaining engagement portions of the two adjacent joint pins, and latches the one joint plate, respectively.
The joint device for a double row seal chain according to claim 1. Double-row inner links and outer links are alternately connected by inserting the pins of the outer links into the bushes of the inner links, and the bushes protrude from the inner plates of the inner links by a predetermined amount, In the joint method of the double-row seal chain, the seal ring arranged so as to surround is sandwiched between the inner plate of the inner link and the outer plate or intermediate plate of the outer link.
Both ends of the double row seal chain in the longitudinal direction are arranged by connecting the intermediate plates between the inner links arranged adjacent to each other in the width direction by joint pins having retaining engagement portions at both ends,
Inserting the joint pins having retaining engagement portions at both ends into the intermediate plate located at both ends in the longitudinal direction of the double row seal chain;
Inserting the seal ring into the pair of inserted joint pins from both ends thereof;
Inserting the inner link into the pair of joint pins from both ends thereof, and sandwiching the seal ring between the projection of the bush of the inner link and the intermediate plate;
Inserting the seal ring into the pair of joint pins from both ends thereof;
A joint plate was fitted over the pair of joint pins and the joint pin disposed at the end of the double row seal chain adjacent to the joint pin, and the joint plates at both ends in the width direction were pressed inward in the width direction. Engaging a retaining member with a retaining engagement portion of the joint pin and locking the joint plate in a state;
A double row seal chain joint method comprising: An inner link row in which a plurality of inner links in which both ends of a pair of inner plates are joined by a bush are arranged in the width direction, and an intermediate plate in which both ends of the outer plate on the outer side in the width direction are connected by pins and loosely coupled to the pins The outer link row having the intermediate plate is connected to the bush by alternately inserting the intermediate plate between the adjacent inner links, and the bush protrudes from the inner plate by a predetermined amount. In a double row seal chain that holds a lubricating oil in a bearing portion between the bush and the pin by interposing a seal ring between the inner plate and the outer plate or the intermediate plate so as to surround a portion,
An intermediate plate connected to the inner link row is disposed at both ends in the longitudinal direction via joint pins having retaining engagement portions at both ends.
A double row seal chain that can be joined by the joint device according to claim 1 or 2 or the joint method according to claim 3. An inner link row in which a plurality of inner links in which both ends of a pair of inner plates are joined by a bush are arranged in the width direction, and an intermediate plate in which both ends of the outer plate on the outer side in the width direction are connected by pins and loosely coupled to the pins The outer link row having the intermediate plate is connected to the bush by alternately inserting the intermediate plate between the adjacent inner links, and the bush protrudes from the inner plate by a predetermined amount. In a double row seal chain that holds a lubricating oil in a bearing portion between the bush and the pin by interposing a seal ring between the inner plate and the outer plate or the intermediate plate so as to surround a portion,
Four joint pins having retaining engagement portions at both ends are arranged in succession instead of the pins, and a joint plate is connected to the joint plate instead of the outer plate by the adjacent joint pins. A retaining member is engaged with the retaining engagement portion of the pin, and the joint plate is locked to the joint pin.
An endless double-row seal chain joined by the joint device according to claim 1 or 2 or the joint method according to claim 3.

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