JP5068345B2 - Conveyor seal chain - Google Patents

Description

  The present invention relates to a conveying seal chain that captures and conveys a conveyed product, and particularly relates to a conveying seal chain in which lubricating oil is sealed between a connecting pin and a bush.

Generally, a seal chain is provided with a seal mechanism between an inner plate and an outer plate to prevent leakage of lubricating oil sealed between a connecting pin and a bush.
Various seal mechanisms have been proposed.

Conventionally, an outer plate and a connecting pin in which both ends of a pair of front and rear bushes are press-fitted into the bushing press-fit holes of a pair of left and right inner plates, and both ends of a connecting pin loosely fitted in the bush are fixed There is known a seal chain having an annular seal member made of an elastic material that surrounds the outer plate and is attached to the inner surface side of the outer plate.
In such a seal chain sealing mechanism, both ends of the bush are press-fitted and fixed in the bush press-fit holes so that both ends of the bush are located inside the outer surface of the inner plate. The outer edge of the bushing press-fitting hole is chamfered to form a chamfered portion, and an annular seal member made of an elastic material is partly located in the gap and is connected to the inner surface of the outer plate and the connecting pin. The outer peripheral surface, the end surface of the bush, and the chamfered portion are attached in a compressed state (see, for example, Patent Document 1).

JP 2003-194155 A (column 12, FIG. 1)

  In the conventional seal chain as described above, the end surface of the annular seal member made of elastic material slides and wears against the outer plate, so that a gap is generated between the annular seal member made of elastic material and the outer plate. There was a problem that the lubricating oil sealed between the bush and the pin leaked out.

  Therefore, the present invention solves the conventional problems. That is, the object of the present invention is to avoid sliding contact between the elastic seal member and the outer plate and to occur from between the elastic seal member and the outer plate. It is an object of the present invention to provide a conveying seal chain that prevents leakage of lubricating oil, which tends to occur, and improves strength against impact load when biting into a sprocket.

  According to the first aspect of the present invention, there is provided an inner plate having a pair of front and rear pin press-fitting holes, a connecting pin that is press-fitted into the pin press-fitting hole of the inner plate and protrudes left and right, and an inner plate on the outer peripheral surface of the connecting pin A pair of left and right cap-like bushes fitted from both left and right sides of the left and right sides, and a pair of left and right cap-like bushes are press-fitted into a pair of front and rear bushing press-fit holes, and the inner plate is placed in the longitudinal direction of the chain via the connecting pin. A pair of left and right outer plates that are connected to each other, and an elasticity that is disposed on the opening side of the cap-shaped bush and prevents leakage of the lubricating oil enclosed in the gap between the outer peripheral surface of the connecting pin and the inner peripheral surface of the cap-shaped bush A pair of left and right cross-sectional L-shaped bracket members having a seal member, a blind hole that fits and supports the bottomed portion of the cap-shaped bush, and the pair of left and right cross-sectional L-shaped bracket members are combined. A conveying seal chain connected to the conveying means for capturing and conveying the conveyance object, wherein the pair of left and right cap-like bushes are loosely fitted with rollers, respectively. It has been solved.

  According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the connecting pin includes a pin small-diameter portion that is loosely fitted to the cap-shaped bush and a pin large-diameter portion that is press-fitted to the inner plate. Thus, the above-described problems are further solved.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the elastic seal member is provided on the outer peripheral surface of the connecting pin and / or the inner peripheral side of the cap-shaped bush. Thus, the above-described problem is further solved.

  According to a fourth aspect of the present invention, in addition to the structure according to any one of the first to third aspects, the connection pin is provided with a protrusion that abuts against the bottomed portion of the cap-shaped bush. By providing the end face, the above-described problems are further solved.

  In addition to the structure of any one of claims 1 to 4, the present invention according to a fifth aspect further includes the above-described problem by the fact that the conveying means is composed of a bucket that captures a conveyed object. It has been solved.

  Therefore, the present invention provides an inner plate having a pair of front and rear pin press-fitting holes, a connecting pin that is press-fitted into the pin press-fitting hole of the inner plate and protrudes left and right, and both left and right sides of the inner plate on the outer peripheral surface of the connecting pin A pair of left and right cap-like bushes to be fitted respectively, and a pair of left and right cap-like bushes are press-fitted into a pair of front and rear bushing press-fit holes, and the inner plate is connected to each other in the longitudinal direction of the chain via the connecting pin. A pair of left and right outer plates, and an elastic seal member disposed on the opening side of the cap-shaped bush to prevent leakage of lubricating oil sealed in a gap between the outer peripheral surface of the connecting pin and the inner peripheral surface of the cap-shaped bush; A pair of left and right cross-sectional L-shaped bracket members having a blind hole that fits and supports the bottomed portion of the cap-shaped bush, and the pair of left and right cross-sectional L-shaped bracket members are connected to each other. In addition, it is configured with a transport means that captures and transports the transported material, so that leakage of lubricating oil due to centrifugal force, etc. caused by circular travel during chain operation is suppressed, and the chain is driven without lubrication from the outside. In addition, the following unique effects can be achieved.

According to the conveying seal chain of the present invention according to claim 1, the connecting pin that is press-fitted into the pin press-fitting hole of the inner plate and protrudes left and right, and the outer peripheral surface of the connecting pin from both the left and right sides of the inner plate, respectively. A pair of left and right cap-like bushes to be fitted, and arranged on the opening side of these cap-like bushes to prevent leakage of lubricating oil enclosed in the gap between the outer peripheral surface of the connecting pin and the inner peripheral surface of the cap-like bush. With the elastic seal member, the elastic seal member is elastically deformed without sliding contact with the outer plate, and the lubricating oil is placed in the gap between the cap-shaped bush and the connecting pin, that is, the lubricating oil flow path. Therefore, the bending action of the conventional transfer seal chain suppresses the generation of mutual gaps caused by sliding contact between the elastic seal member and the outer plate, resulting in excellent sealing performance. It is possible to obtain.
Since the pair of left and right cap-like bushes are loosely fitted to the rollers, the conveying seal chain is engaged with the sprocket via the pair of left and right rollers, improving the strength of the conveying seal chain against impact loads. Can be made.

  According to the conveying seal chain of the present invention according to claim 2, in addition to the effect exhibited by the conveying seal chain according to claim 1, the connecting pin is connected to the pin small-diameter portion loosely fitted to the cap-shaped bush and the inner plate. Because the cap bushing's opening abuts against the pin large-diameter portion because it is configured with a pin large-diameter portion that is press-fitted and fitted, it seals regardless of the error in the thickness of the inner plate that press-fits the connecting pin. An effect can be obtained.

  According to the conveying seal chain of the present invention according to claim 3, in addition to the effect exerted by the conveying seal chain according to claim 1 or 2, the elastic seal member includes the outer peripheral surface of the connecting pin and / or the cap. Since it is provided on the inner peripheral side of the bush, the lubricating oil is sealed in a space that needs to be filled with at least the lubricating oil to ensure a smooth bending operation of the chain, so that a sealing effect can be obtained efficiently. Can do.

According to the transport seal chain of the present invention according to claim 4, in addition to the effect exerted by the transport seal chain according to any one of claims 1 to 3, the connecting pin has a bottom with a cap-shaped bush. In order to ensure a large lubricating oil flow path between the pin end surface provided with the protrusion and the bottomed portion of the cap-like bush by providing the pin end surface provided with the protrusion that contacts the portion. An excellent wear suppression effect can be obtained.
Moreover, since the protrusion part of a pin end surface contact | abuts the bottomed part of a cap-shaped bush, the movement to the connection pin longitudinal direction of a connection pin can be prevented.

  According to the transport seal chain of the present invention according to claim 5, in addition to the effect exhibited by the transport seal chain according to any one of claims 1 to 4, the transport means captures the transported object. Since the transported material is scraped off by the bucket, the transported material can be efficiently captured and transported even if the transported material is a loose material such as a fertilizer, a sample, or a grain.

FIG. 3 is a view showing how the transfer seal chain according to the first embodiment of the present invention is used. BRIEF DESCRIPTION OF THE DRAWINGS The schematic of the seal chain for conveyance except the conveyance means which is 1st Example of this invention. The assembly exploded view of the seal chain for conveyance shown in FIG. The top view of the seal chain for conveyance except the conveyance means which is 1st Example of this invention. 1A-A cross-sectional view of a transfer seal chain according to a first embodiment of the present invention. Sectional drawing of FIG. 1A-A of the seal chain for conveyance which is 2nd Example of this invention. FIG. 7 is a partially enlarged view of FIG. 6.

  The present invention includes an inner plate having a pair of front and rear pin press-fitting holes, a connecting pin that is press-fitted into the pin press-fitting hole of the inner plate, and a pair of left and right sides that are respectively fitted to the outer peripheral surface of the connecting pin from the left and right sides of the inner plate. A cap-shaped bush, a pair of left and right cap-shaped bushes are press-fitted into a pair of front and rear bushing press-fit holes, and a pair of left and right outer plates are connected to each other in the longitudinal direction of the chain via a connecting pin, and a cap-shaped An elastic seal member that is arranged on the opening side of the bushing and prevents leakage of lubricating oil sealed in the gap between the outer peripheral surface of the connecting pin and the inner peripheral surface of the cap-shaped bush, and fits to the bottomed portion of the cap-shaped bush A pair of left and right cross-sectional L-shaped bracket members having a blind hole to be supported, and a pair of left and right cross-sectional L-shaped bracket members that are connected to each other to convey and convey the conveyed product. The pair of left and right cap-shaped bushes are loosely fitted to the rollers, respectively, so that sliding contact between the elastic seal member and the outer plate is avoided, and a gap is generated between the conventional elastic seal member and the outer plate. Specific embodiments of the present invention can be used as long as they can prevent leakage of lubricating oil due to the above, exhibit an excellent sealing effect, and improve the strength against impact load of the conveying seal chain when biting into a sprocket. Can be anything.

  For example, as for the specific material of the elastic seal member incorporated in the seal chain for conveyance of the present invention, any material such as nylon resin, nitrile rubber (NBR), etc., provided it has wear resistance, heat resistance and oil resistance. In particular, nylon resin is excellent in elasticity, wear resistance, and oil resistance, and suppresses deterioration of the sealing effect due to sliding contact with other members. It is more preferable because a stable ring shape is maintained over a long period of time and a smooth bending operation of the chain is realized.

  As for the cap-shaped bush and / or the protrusion provided on the connecting pin incorporated in the conveying seal chain of the present invention, a lubricating oil flow path is secured in the space where the bottomed portion of the cap-shaped bush and the connecting pin face each other, and the connection is established. As long as the pin can be positioned reliably, it may be provided on the pin end surface of the cap-shaped bush and / or the bottomed portion of the cap-shaped bush, and the shape of the protrusion may be either a semi-cylindrical body or a hemispherical body. Furthermore, the number of protrusions may be one or a plurality of protrusions.

  As long as the conveying means incorporated in the conveying chain of the present invention connects the pair of left and right L-shaped bracket members to each other and captures and conveys the conveyed item, any of buckets, slats, pans, or aprons can be used. It does not matter.

A transport seal chain 100 according to a first embodiment of the present invention will be described below with reference to FIGS.
Here, FIG. 1 is a view showing how the seal chain for transport according to the first embodiment of the present invention is used, and FIG. 2 is an outline of the seal chain for transport excluding the transport means according to the first embodiment of the present invention. 3 is an exploded view of the transport seal chain shown in FIG. 2, and FIG. 4 is a plan view of the transport seal chain excluding the transport means according to the first embodiment of the present invention. FIG. 5 is a cross-sectional view of the conveying seal chain according to the first embodiment of the present invention, taken along the line A-A in FIG.

  First, a transport seal chain 100 according to a first embodiment of the present invention is used to capture and transport bulk materials such as fertilizers, samples, and grains, as shown in FIGS. 1 to 5. Further, one inner plate 110 having a pair of front and rear pin press-fitting holes 112, a connecting pin 120 press-fitted into the pin press-fitting hole 112 of the inner plate 110, and the inner plate 110 on the outer peripheral surface of the connecting pin 120. A pair of left and right cap-like bushes 130, 130 fitted from both left and right sides of the left and right sides, and a pair of left and right cap-like bushes 130, 130 are respectively press-fitted into a pair of front and rear bushing press-fit holes 142 and connected via a connecting pin 120. And a pair of left and right outer plates 140 and 140 for mutually connecting the inner plate 110 in the longitudinal direction of the chain.

  Further, the conveying seal chain 100 is disposed on the side of the openings 134 and 134 of the pair of left and right cap-shaped bushes 130 and 130, respectively, and the outer peripheral surface of the connecting pin 120 and the inner peripheral surface of the pair of left and right cap-shaped bushes 130 and 130. And an elastic seal member 150 made of an O-ring or the like for preventing leakage of the lubricating oil O enclosed in the gap between the two and the blind holes 162 fitted to and supported by the bottomed portions 132 of the pair of left and right cap-shaped bushes 130, respectively. A pair of left and right L-shaped bracket members 160, 160 and a pair of left and right L-shaped bracket members 160, 160 are provided.

The conveying seal chain 100 includes conveying means 170 composed of a bucket for capturing and conveying a captured matter such as a bulk, and the bracket member 160 having an L-shaped cross section is provided via the conveying means 170 composed of this bucket. 160 are connected to each other.
Further, the above-described L-shaped bracket member 160 and the conveying means 170 composed of a bucket are the bolts inserted into the bolt insertion holes 164 of the L-shaped bracket member 160 and the holes provided in the conveying means 170 composed of a bucket. 181 and a nut 182 that engages with the bolt 181 are coupled to each other by sandwiching and tightening a conveying means 170 including an L-shaped bracket member 160 and a bucket.
Lubricating oil O is enclosed between the connecting pin 120, the pair of left and right cap-like bushes 130, 130 and the elastic seal member 150.

Therefore, specific forms of the connecting pin 120, the cap-shaped bush 130, and the elastic seal member 150, which are the most characteristic features of the transfer seal chain 100 according to the first embodiment of the present invention, will be described in detail with reference to FIGS. explain.
First, the conveying seal chain 100 is fitted into the connecting pin 120 that is press-fitted into the pin press-fitting hole 112 of one inner plate 110 and the outer peripheral surface of the connecting pin 120 from both the left and right sides. A pair of left and right cap-like bushes 130 and 130 are arranged on the openings 134 and 134 side of the cap-like bushes 130 and 130, respectively, and are formed in a gap between the outer peripheral surface of the connecting pin 120 and the inner peripheral surface of the cap-like bush 130. And an elastic seal member 150 that prevents leakage of the enclosed lubricating oil O.
Thereby, the elastic seal member 150 is elastically deformed without sliding contact with the outer plate 140, and the lubricating oil O is sealed in the gap between the cap-shaped bush 130 and the connecting pin 120, that is, the flow path of the lubricating oil O. is doing.

The connecting pin 120 includes a pair of left and right pin small-diameter portions 122 and 122 loosely fitted to the pair of left and right cap-shaped bushes 130 and 130, and a pin large-diameter portion 124 in the center of the pin press-fitted to one inner plate 110, respectively. The elastic seal member 150 is provided on the inner peripheral side of the cap-shaped bushes 130 and 130, respectively.
Accordingly, the openings 134 and 134 of the pair of left and right cap-like bushes 130 and 130 come into contact with the pin large-diameter portion 134 at the center of the pin from both the left and right sides, and the conveyance seal chain 100 is smoothly bent. The lubricating oil O is enclosed in a space that needs to be filled with at least the lubricating oil O to ensure the operation.

The elastic seal member 150 is provided on the inner peripheral side of the pair of left and right cap-like bushes 130, 130, and the pair of left and right cap-like bushes 130, 130 are loosely fitted to the pair of left and right rollers 190, 190, respectively. The conveying means 170 is constituted by a bucket that captures the conveyed product W.
As a result, the conveying seal chain 100 is configured to bite into a pair of left and right sprockets (not shown) via a pair of left and right rollers 190, 190, and the conveying seal chain 100 holds the conveyed product W with a bucket. It comes to scrape.

  The transfer seal chain 100 according to the first embodiment thus obtained includes a connecting pin 120 press-fitted into the pin press-fitting hole 112 of one inner plate 110, 110, and an outer peripheral surface of the connecting pin 120. A pair of left and right cap-like bushes 130, 130 fitted respectively from the left and right sides of one inner plate 110, and the outer peripheral surface of the connecting pin 120 and a cap-like shape disposed on the opening 134 side of these cap-like bushes 130. The elastic seal member 150 prevents leakage of the lubricating oil O sealed in the gap with the inner peripheral surface of the bush 130, and the connecting pin 120 has a small pin diameter that is loosely fitted to the cap-shaped bushes 130 and 130, respectively. It is possible to obtain an excellent sealing effect by comprising the portions 122, 122 and the pin large-diameter portion 124 that is press-fitted to one inner plate 110. It is, it is possible to obtain a sealing effect regardless error in the thickness dimension of one of the inner plates 110 press-fitting the connecting pin 120.

  An elastic seal member 150 is provided on the inner peripheral side of the pair of left and right cap-shaped bushes 130, 130, and the pair of left and right cap-shaped bushes 130, 130 loosely fit the pair of left and right rollers 190, 190, respectively. As a result, a sealing effect can be efficiently obtained, and the strength against the impact load of the transfer seal chain 100 when biting into the sprocket can be improved.

  Furthermore, since the conveying means 170 is constituted by a bucket that captures the conveyed product W, it is possible to efficiently capture and convey even a loose material such as fertilizer, sample, and grain. It is.

Next, a conveying seal chain 200 according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a cross-sectional view of the conveying seal chain according to the second embodiment of the present invention, taken along the line AA of FIG. 1, and FIG. 7 is a partially enlarged view of FIG.
In FIGS. 6 and 7, the reference numerals of the members according to the second embodiment corresponding to the members according to the first embodiment shown in FIGS. 1 to 5 are rewritten from the 100s to the 200s.

  First, the transport seal chain 200 according to the second embodiment of the present invention is used for capturing and transporting bulk materials such as fertilizers, samples, and grains, and as shown in FIG. 6 and FIG. One inner plate 210 having a pair of pin press-fitting holes 212, connecting pins 220 and 220 press-fitted into the pin press-fitting holes 212 of the inner plate 210, and the inner plate 210 on the outer peripheral surface of the connecting pin 220 A pair of left and right cap-like bushings 230, 230 fitted from both left and right sides, and a pair of left and right cap-like bushings 230, 230 are press-fitted into the pair of front and rear bushing press-fitting holes 222, and are connected via a connecting pin 220. A pair of left and right outer plates 240 and 240 that connect the inner plate 210 to each other in the longitudinal direction of the chain are provided.

  Further, the conveying seal chain 200 is disposed on the openings 234 and 234 side of the pair of left and right cap-shaped bushes 230 and 230, respectively, and the outer peripheral surface of the connecting pin 220 and the inner peripheral surface of the pair of left and right cap-shaped bushes 230 and 230. And a blind hole 262 that fits and supports the bottomed portion 232 of the pair of left and right cap-like bushes 230, 230, and an elastic seal member 250 that prevents leakage of the lubricating oil O sealed in the gap A pair of left and right cross-sectional L-shaped bracket members 260 and 260 having an L-shaped cross section, and a conveying means 270 for connecting the pair of left and right cross-sectional L-shaped bracket members 260 and 260 to each other are provided.

The conveying seal chain 200 includes conveying means 270 including a bucket that captures and conveys a conveyed object W such as a bulk, and the bracket members 260 and 260 having an L-shaped cross section are provided via the conveying means 270 including the bucket. Are connected to each other.
Also, the above-described L-shaped bracket member 260 and the conveying means 270 including the bucket include the bolt insertion hole 264 of the L-shaped bracket member 260 and the hole for inserting the bolt provided in the conveying means 270 including the bucket. The bolt 281 to be inserted into the nut 282 and the nut 282 engaged with the bolt 281 are coupled by clamping the conveying means 270 including the L-shaped bracket member 260 and the bucket.
Lubricating oil O is enclosed between the connecting pin 220, a pair of left and right cap-shaped bushings 230, 230, and the elastic seal member 250.

Therefore, specific forms of the connecting pin 220, the cap-shaped bush 230, and the elastic seal member 250, which are the most characteristic features of the transfer seal chain 200 of the second embodiment, will be described in detail.
First, the conveying seal chain 200 includes a connecting pin 220 that is press-fitted into the pin press-fitting hole 212 of one inner plate 210, and a left and right that are fitted to the outer peripheral surface of the connecting pin 220 from the left and right sides of the inner plate 210. A pair of cap-shaped bushes 230, 230, and lubrication that is disposed on the side of the openings 234, 234 of the cap-shaped bushes 230, 230 and sealed in the gap between the outer peripheral surface of the connecting pin 220 and the inner peripheral surface of the cap-shaped bush 230 And an elastic seal member 250 that prevents oil O from leaking out.
As a result, the elastic seal member 250 is elastically deformed to enclose the lubricating oil O in the gap between the cap-shaped bush 230 and the connecting pin 220, that is, the flow path of the lubricating oil O, and the conveyance seal chain 200. In the bending operation, the elastic seal member 250 and the outer plate 240 are not in sliding contact, and sliding contact wear of the elastic seal member 250 caused by sliding contact with the outer plate 240 is prevented.

The connecting pin 220 includes a pair of left and right pin small-diameter portions 222 and 222 that are loosely fitted to the pair of left and right cap-shaped bushes 230 and 230, and a pin large-diameter portion 224 that is press-fitted to one inner plate 210. The elastic seal members 250 are provided on the inner peripheral sides of the cap-shaped bushes 230 and 230, respectively.
Accordingly, the openings 234 and 234 of the pair of left and right cap-shaped bushes 230 and 230 come into contact with the pin large-diameter portion 224 at the center of the pin from both the left and right sides, and ensure a smooth bending operation of the chain. In this case, the lubricating oil O is sealed in a space that needs to be filled with at least the lubricating oil O.

Further, the elastic seal member 250 is provided on the inner peripheral side of the cap-shaped bush 230, the pair of left and right cap-shaped bushes 230 loosely fit the rollers 290 and 290, and the connecting pin 220 is connected to the cap-shaped bush 230. The pin end surface 228 is provided with a protrusion 226 that abuts against the bottomed portion 232 of 230.
As a result, the conveying seal chain 200 is engaged with the pair of left and right sprockets (not shown) via the pair of left and right rollers 290 and 290, and the pin end surface 228 provided with the protrusion 226 and the cap-shaped bush. A large flow path of the lubricating oil O is secured between the bottomed portion 232 of the 230 and the protruding portion 226 of the pin end surface 228 is in contact with the bottomed portion 232 of the cap-shaped bush 230.

  Furthermore, since the conveying means 270 is configured by a bucket that captures the conveyed product W, the conveying seal chain 200 scrapes the conveyed product W by the bucket.

  The transfer seal chain 200 according to the second embodiment obtained in this way has a connecting pin 220 press-fitted into the pin press-fitting hole 212 of one inner plate 210, 210, and an outer peripheral surface of the connecting pin 220. A pair of left and right cap-shaped bushings 230, 230 that are fitted from the left and right sides of the inner plate 210, and the outer peripheral surface of the connecting pin 220 and the cap-shaped bushing disposed on the opening 234 side of the cap-shaped bushings 230, 230, respectively. The elastic seal member 250 prevents leakage of the lubricating oil O sealed in the gap with the inner peripheral surface of the 230, and the connecting pin 220 is loosely fitted to the pair of left and right cap-shaped bushes 230 and 230, respectively. It is composed of a pair of left and right pin small-diameter portions 222, 222 and a pin large-diameter portion 224 in the center of the pin that is press-fitted into one inner plate 210. More, it is possible to obtain the sealing effect regardless it is possible to obtain an excellent sealing effect, the error of the thickness dimension of one of the inner plates 210 press-fitting the connecting pin 220.

  The elastic seal member 250 is provided on the inner peripheral side of the pair of left and right cap-shaped bushings 230, 230, and the elastic seal member 250 is provided on the inner peripheral side of the pair of left and right cap-shaped bushings 230, 230, respectively. A pair of left and right cap-like bushes 230, 230 are provided with a pair of left and right rollers 290, 290, respectively, so that a sealing effect can be obtained efficiently and transported when biting into a sprocket. The strength against the impact load of the seal chain 200 can be improved.

  Further, the connecting pin 220 includes a pin end surface 228 provided with a protruding portion 226 that abuts against the bottomed portion 232 of the pair of left and right cap-shaped bushes 230, 230, and the conveying means 270 includes the conveyed object W It is possible to obtain an excellent wear suppression effect by preventing the movement of the connecting pin 220 in the longitudinal direction of the connecting pin and to separate the fertilizer, sample, grain, etc. However, the effect is enormous, such as being able to capture and transport efficiently.

100, 200 ... Transport seal chain 110, 210 ... Inner plate 112, 212 ... Pin press-fit holes 120, 220 ... Connection pins 122, 222 ... Pin small diameter parts 124, 224 ... Pin large diameter part 226 ... Projection part 228 ... Pin end face 130, 230 ... Cap-shaped bush 132, 232 ... Bottomed part 134, 234 ... Opening part 140, 240 ... Outer plate 142, 242 ... Bush press-fit holes 150, 250 ... Elastic seal members 160, 260 ... L-shaped bracket members 162, 262 ... Blind holes 164, 264 ... Bolt insertion holes 170, 270 ... Conveying means 181, 281 ... Bolts 182, 282 ... Nut 190, 290 ... Roller O ... The lubricating oil W ··· conveyed object

Claims (5)

An inner plate having a pair of front and rear pin press-fitting holes, a connecting pin that is press-fitted into the pin press-fitting hole of the inner plate and protrudes left and right, and left and right sides that are fitted to the outer peripheral surface of the connecting pin from the left and right sides of the inner plate, respectively A pair of cap-shaped bushes and a pair of left and right outer plates that press-fit the pair of left and right cap-shaped bushes into a pair of front and rear bushing press-fit holes and connect the inner plates to each other in the longitudinal direction of the chain via the connecting pins And an elastic seal member disposed on the opening side of the cap-shaped bush to prevent leakage of lubricating oil sealed in a gap between the outer peripheral surface of the connecting pin and the inner peripheral surface of the cap-shaped bush, and the cap-shaped bush A pair of left and right cross-sectional L-shaped bracket members having a blind hole that fits and supports a bottomed portion and the pair of left and right cross-sectional L-shaped bracket members are connected to each other to capture a conveyed product. A conveying sealing chain is composed of a conveying means for feeding,
The pair of left and right cap-like bushes are loosely fitted with rollers, respectively.   2. The conveying seal chain according to claim 1, wherein the connecting pin includes a pin small-diameter portion that is loosely fitted to the cap-shaped bush and a pin large-diameter portion that is press-fit to the inner plate. .   The conveying seal chain according to claim 1 or 2, wherein the elastic seal member is provided on an outer peripheral surface of the connecting pin and / or an inner peripheral side of the cap-shaped bush.   The said connection pin is provided with the pin end surface which provided the projection part which contact | abuts facing the bottomed part of the said cap-shaped bush, The conveyance object in any one of Claim 1 thru | or 3 characterized by the above-mentioned. Seal chain.   The conveyance seal chain according to any one of claims 1 to 4, wherein the conveyance means is constituted by a bucket for capturing a conveyance object.

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