WO2018168162A1 - Raccord de raccordement et outil d'accouplement - Google Patents

Raccord de raccordement et outil d'accouplement Download PDF

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Publication number
WO2018168162A1
WO2018168162A1 PCT/JP2017/047187 JP2017047187W WO2018168162A1 WO 2018168162 A1 WO2018168162 A1 WO 2018168162A1 JP 2017047187 W JP2017047187 W JP 2017047187W WO 2018168162 A1 WO2018168162 A1 WO 2018168162A1
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WO
WIPO (PCT)
Prior art keywords
coupling
arm portion
groove
section
hole
Prior art date
Application number
PCT/JP2017/047187
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English (en)
Japanese (ja)
Inventor
正樹 有賀
Original Assignee
株式会社キトー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社キトー filed Critical 株式会社キトー
Publication of WO2018168162A1 publication Critical patent/WO2018168162A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
    • F16G15/04—Quickly-detachable chain couplings; Shackles chain links with rapid junction means are classified according to the corresponding kind of chain

Definitions

  • the present invention relates to a coupling fitting and a coupling tool coupled to a chain.
  • Patent Documents 1 to 3 disclose a configuration in which a curved beam portion exists between an insertion arm portion and a groove-shaped arm portion.
  • the bent beam portion is a portion to which a connection object such as a chain is connected.
  • the chain connected to the curved beam section is along the curved beam section. It is slidable away from the hanging position.
  • the cross-sectional shape of the curved beam portion is close to a circle, it is provided in an elliptical shape that gradually becomes flattened toward the groove-shaped arm portion. Therefore, when the amount of rotation from the hanging position of the chain increases and the chain reaches the bending beam portion near the groove-shaped arm portion, the chain cannot move in the rotation direction and the sliding direction. Such a state in which the chain cannot move is called chain entanglement.
  • Patent Document 4 discloses a coupling fitting in which the cross section of the bent beam portion is flat (see FIG. 9). In this configuration, when the chain is in the suspended position, the chain is slidable along the bent beam portion, but the chain cannot be rotated from the suspended position with respect to the bent beam portion.
  • the present invention has been made in view of the above circumstances, and the cross-section of the curved beam portion is circular even in the vicinity of the groove-shaped arm portion, and other members can be connected in a rotatable state, and the strength of the curved beam portion is also provided.
  • An object of the present invention is to provide a coupling fitting capable of sufficiently securing the above.
  • a coupling fitting is constituted by being coupled to another coupling fitting via a coupling pin, and the coupling pin is inserted.
  • An insertion arm portion having a through hole, an insertion hole into which the connecting pin is inserted, a grooved arm portion positioned on the other end side facing the insertion arm portion positioned in the one end side in the width direction, and an insertion
  • a curved beam portion provided between the telescoping arm portion and the groove-shaped arm portion, and the curved beam portion is provided with a circular cross section perpendicular to the extending direction over the entire extending direction, and is bent.
  • an arc-like overhang part is provided between the beam part and the channel-shaped arm part, and an arc-like overhang part is provided to reduce the extension length of the curved beam part, and the thickness dimension in the thickness direction perpendicular to the width direction in the cross section of the arc-like overhang part Is provided larger than the diameter of the cross section of the curved beam portion. Alloy tool is provided.
  • the inner peripheral portion of the arc-shaped projecting portion constitutes a part of an arc-shaped locus that is continuous with the curved beam portion.
  • the front surface and the back surface located on both end sides in the thickness direction of the arc-shaped projecting portion are the front surface and the back surface located on both end sides in the thickness direction of the groove-shaped arm portion. It is preferable that they are provided flush.
  • the other side surface of this invention is a coupling tool used as a cyclic
  • the through hole of the insertion arm part of the other coupling metal of the two coupling metal is aligned, and in this alignment state, the connecting pin is inserted into the through hole and the insertion hole, so that the two coupling metal It is preferred that they are linked.
  • the cross section of the bending beam portion is circular even in the vicinity of the groove-shaped arm portion, and other members to be connected are rotatable, and sufficient strength of the bending beam portion is ensured. Is possible.
  • FIG. 2 is a cross-sectional view showing a state in which the coupling fitting is cut along the line II in FIG. 1.
  • FIG. 1 is a side view which shows the state which looked at the coupling metal fitting shown in FIG. 1 from the insertion arm part side.
  • FIG. 1 is a side view which shows the state which looked at the coupling metal fitting shown in FIG. 1 from the groove-shaped arm part side.
  • FIG. 2 is a transverse cross-sectional view showing a state where a coupling fitting is cut along the line II-II in FIG. 1. It is a perspective view which shows the mode of the stress concentration of the insertion arm part side among the present coupling metal fittings as a comparative example. It is a perspective view which shows the mode of the stress concentration by the groove-shaped arm part side among the present coupling
  • the X direction is the axial direction of the connecting pin 100 in FIG. 2
  • the X1 side indicates the right side in FIG. 2
  • the X2 side indicates the opposite left side.
  • the Y direction refers to a direction in which the insertion arm portion 20 and the grooved arm portion 30 extend while being orthogonal to the X direction (width direction) in FIGS. 1 and 2
  • the Y1 side corresponds to FIGS. 1 and 2.
  • the Y2 side indicates the front side of the paper surface in FIGS. 1 and 2.
  • the Z direction (thickness direction) indicates a direction orthogonal to the X direction and the Y direction
  • the Z1 side indicates the back side of the paper surface in FIG. 3
  • the Z2 side indicates the near side of the paper surface in FIG.
  • FIG. 1 is a plan view showing the configuration of the coupling fitting 10.
  • FIG. 2 is a perspective view showing a state in which a connector 11 in which a pair of coupling fittings 10 are connected is configured.
  • the pair of coupling fittings 10 are connected via a connecting pin 100.
  • the connecting pin 100 connects the pair of fittings 10 by inserting the connecting pin 100 in a state where a through-hole 21 and an insertion hole 33a, 33b, which will be described later, are aligned.
  • One end of the connecting pin 100 and the other end are slightly thicker than the central portion.
  • One end and the other end are located in the through hole 21 and the insertion holes 33a and 33b, respectively, and a cylindrical spring collar 110 is attached to the central portion of the connecting pin 100.
  • the inner diameter of the hole of the spring collar 110 is slightly larger than the inner diameter of the through hole 21, and a spring for tightening the connecting pin 100 when it is press-fitted is provided inside the hole. Therefore, the spring collar 110 is attached to the central portion of the connecting pin 100, thereby preventing the connecting pin 100 from coming out of the through hole 21.
  • the coupling fitting 10 constituting the connecting tool 11 as described above is made of a metal such as steel. Further, as shown in FIG. 1, the coupling fitting 10 includes an insertion arm portion 20, a groove-shaped arm portion 30, an arcuate overhang portion 40, and a bending beam portion 50, and each of these portions is, for example, It is integrally formed by forging.
  • the coupling fitting 10 includes a surrounding hole S1 surrounded by these parts, and an external chain, a link member, or the like is inserted into the surrounding hole S1.
  • FIG. 3 is a front view showing a state in which the coupling fitting 10 is viewed from the insertion arm portion 20 and the grooved arm portion 30 side.
  • FIG. 4 is a cross-sectional view showing a state in which the coupling fitting 10 is cut along the line II in FIG.
  • FIG. 5 is a side view showing a state in which the coupling fitting 10 is viewed from the insertion arm portion 20 side.
  • the insertion arm portion 20 is a portion located on one end side of the coupling metal 10 and is a portion inserted into the groove portion 32 of the groove-shaped arm portion 30.
  • the outer peripheral surface on the Y1 side is an arc surface 22 that draws an arc.
  • the Z1 side outer peripheral surface of the insertion arm portion 20 is also an arc surface 23, and it follows the ring hole surrounded by the metal ring when the chain is inserted. Can do.
  • the strength can be improved as compared with a case where the circular arc surface 23 does not exist.
  • the outer peripheral surface on the Z2 side is not an arc surface, and the outer peripheral surface is provided in a flat shape.
  • at least one of the outer peripheral surfaces on the Z1 side and the Z2 side may be an arc surface, and the outer peripheral surfaces on both the Z1 side and the Z2 side may be flat instead of the arc surface.
  • the outer peripheral surface (the outer peripheral surface on the X1 side and the outer peripheral surface on the X2 side) on both sides in the width direction (X direction) of the insertion arm portion 20 is formed in a flat shape. Further, the cross-sectional area of the insertion arm portion 20 is provided so as to be larger than that of the bending beam portion 50.
  • the insertion arm portion 20 is provided with a dimension (thickness dimension) in the Z direction larger than that of the bending beam portion 50.
  • the insertion arm portion 20 is provided with a dimension (width dimension) in the X direction smaller than that of the bending beam portion 50.
  • the insertion arm portion 20 can be inserted into the ring hole surrounded by the metal ring of the chain, and the chain can be positioned at the bending beam portion 50.
  • the dimension (width dimension) in the X direction is reduced, the insertion arm part 20 is easily positioned in the groove part 32.
  • the insertion arm portion 20 is provided with a through hole 21.
  • the through hole 21 penetrates the insertion arm portion 20 along the width direction (X direction), and is a portion for positioning one end portion of the connecting pin 100 described above.
  • an inclined portion 24 is also provided on the bending beam portion 50 side (Y2 side), and the insertion arm portion 20 and the bending beam portion 50 are provided. There is no step between them.
  • FIG. 6 is a side view showing the state in which the coupling fitting 10 is viewed from the grooved arm 30 side.
  • the groove-shaped arm portion 30 is a portion located on the other end side of the coupling fitting 10.
  • This groove-shaped arm part 30 has a pair of opposing piece parts 31a and 31b along the thickness direction (Z direction), and the insertion arm part 20 is inserted between these opposing piece parts 31a and 31b.
  • a groove 32 to be inserted is provided. Therefore, the width dimension of the groove part 32 (opposite distance between the opposing piece part 31 a and the opposing piece part 31 b) is an interval corresponding to the insertion of the insertion arm part 20.
  • insertion holes 33 a and 33 b are provided in the respective facing pieces 31 a and 31 b.
  • the insertion holes 33 a and 33 b penetrate the opposing piece portions 31 a and 31 b along the width direction (X direction), and are formed so as to be coaxial with the through hole 21.
  • These insertion holes 33 a and 33 b are portions for positioning the other end of the connecting pin 100.
  • the insertion holes 33a and 33b are provided at the center in the thickness direction (Z direction) of the opposing piece portions 31a and 31b, but are provided at positions slightly shifted from the center in the thickness direction (Z direction). Also good.
  • the outer peripheral surface on the Y1 side is an arc surface 34 that draws an arc, but a flat shape other than the arc surface 34 may be used.
  • the opposing piece portions 31 a and 31 b are provided with dimensions (thickness dimensions) in the Z direction larger than that of the insertion arm portion 20. Therefore, the opposing piece portions 31 a and 31 b (groove-shaped arm portion 30) are portions having a larger dimension in the thickness direction (Z direction) than the bent beam portion 50. Further, in a state where the insertion arm portion 20 is positioned in the groove portion 32, the insertion arm portion 20 is protected by the opposing piece portions 31a and 31b.
  • FIG. 7 is a cross-sectional view showing a state in which the fitting 10 is cut along the line II-II in FIG.
  • the arc-shaped projecting portion 40 is continuously provided on the Y2 side of the groove-shaped arm portion 30.
  • the protruding amount in the thickness direction (Z direction) of the arcuate projecting portion 40 with respect to the curved beam portion 50 is one side (Z1 side) in the thickness direction (Z direction) and the other side (Z2 side) in the thickness direction (Z direction). It is about the same. However, these protrusion amounts may be different.
  • the inner peripheral portion of the arc-shaped protruding portion 40 constitutes a part of an arc-shaped locus.
  • the inner peripheral portion of the arcuate overhanging portion 40 is a portion constituting the surrounding hole S1 of the coupling fitting 10 together with the inner peripheral portion of the bent beam portion 50.
  • the length of the bent beam portion 50 is short.
  • the dimension of the bending beam part 50 can be shortened and the stress concentration in the maximum stress concentration part 51 mentioned later can be reduced.
  • the arcuate overhanging portion 40 is provided with a thickness dimension M1 (dimension in the Z direction) larger than the diameter D1 of the curved beam portion 50, and the groove-shaped arm portion 30.
  • the thickness dimension (dimension in the Z direction) is approximately the same.
  • the thickness dimension M1 is provided within a range of about 2 to 2.5 times the diameter D1.
  • the surface on the Z1 side and the back surface on the Z2 side of the arcuate overhanging portion 40 are provided so as to be flush with the surface on the Z1 side and the back surface on the Z2 side of the grooved arm portion 30.
  • the arcuate overhanging portion 40 has a large cross-sectional area and is a portion that is difficult to deform even when a load is applied to the bending beam portion 50. Moreover, in the arc-shaped overhang
  • the bent beam portion 50 is an arc-shaped beam portion located between the insertion arm portion 20 and the arc-shaped protruding portion 40, and is a portion to which a load from a chain or a link member acts.
  • the curved beam portion 50 has a circular cross section, and is provided so as to have the same diameter over the entire circumferential direction. Therefore, when a chain is hung on the bending beam portion 50, the chain can be slid along the bending beam portion 50, and the chain rotates at any position in the circumferential direction of the bending beam portion 50. It is possible to move. For this reason, it is possible to prevent the chain from being entangled in any part of the bent beam portion 50.
  • FIG. 8 is a perspective view showing a state of stress concentration on the insertion arm portion 20C side in the current coupling fitting 10C as a comparative example.
  • FIG. 9 is a perspective view showing a state of stress concentration on the grooved arm portion 30C side in the current coupling fitting 10C as a comparative example.
  • the Y direction is arranged along the vertical direction in the coupling fitting 10C, and the load portion 53C that intersects the center line L1 on the inner peripheral side of the bending beam portion 50C is arranged.
  • a load is applied to the lower side in the vertical direction (Y2 side).
  • the cross section of the bent beam portion 50C is not a perfect circle but is an ellipse or an ellipse. Therefore, when the chain is positioned on the grooved arm portion 30C side in the bending beam portion 50C, the chain is tangled.
  • the bending moment is maximized at the inner peripheral side portion on the Y1 side adjacent to the insertion arm portion 20C in the bending beam portion 50C, and the inner peripheral side thereof.
  • This portion is deformed so as to have a larger curvature radius, and is also distorted vertically downward by a load, so that the maximum stress concentration portion 51C where stress is most concentrated is obtained.
  • the stress at the maximum stress concentration portion 51C was 628 N / mm 2 .
  • the bending moment also increases at the inner peripheral side portion on the Y1 side adjacent to the groove-shaped arm portion 30C in the bending beam portion 50C, and the inner periphery thereof. Since the second portion is deformed so that the radius of curvature of the portion on the side is increased and is also distorted vertically downward by a load, the second stress concentration portion 52C is concentrated. However, in the second stress concentration portion 52C, although the stress is smaller than that in the maximum stress concentration portion 51C, the stress is higher than that in portions other than the maximum stress concentration portion 51C.
  • FIG. 10 is a perspective view showing a state of stress concentration on the insertion arm portion 20 side in the coupling fitting 10 of the present embodiment.
  • FIG. 11 is a perspective view showing a state of stress concentration on the grooved arm portion 30 side of the coupling fitting 10 of the present embodiment.
  • the portion on the inner peripheral side on the Y1 side adjacent to the insertion arm portion 20 in the bending beam portion 50 is the above-described maximum stress concentration portion 51C.
  • the maximum stress concentration portion 51 where the stress is most concentrated.
  • the stress at the maximum stress concentration portion 51 was 540 N / mm 2 .
  • stress is also concentrated on the inner peripheral side portion on the Y1 side adjacent to the arcuate projecting portion 40 in the bending beam portion 50 in the coupling member 10 of the present embodiment.
  • the second stress concentration portion 52 is formed, the stress is much smaller in the second stress concentration portion 52 than in the maximum stress concentration portion 51.
  • the length (span) of the bent beam portion 50 is shortened by the presence or absence of the arc-shaped protruding portion 40, and as a result, the stress at the maximum stress concentration portion 51 is reduced. ing. Moreover, since the stress is greatly reduced in the portion corresponding to the second stress concentration portion 52C due to the presence of the arcuate overhanging portion 40, the elongation and strain at the second stress concentration portion 52C are greatly reduced. .
  • the distance from the load portion 53C to the end on the insertion arm portion 20C side and the distance from the load portion 53C to the end on the grooved arm portion 30C side are shown in FIG. 8 and FIG.
  • the distance from the load portion 53 to the end portion on the insertion arm portion 20 side, and the load portion 53 of the load. 10 and FIG. 11, the distance from the load portion 53 to the load is not uniform.
  • the bending beam portion 50 is provided with a circular cross section perpendicular to the extending direction over the entire extending direction. Further, an arc-like overhanging portion 40 for reducing the extension length of the bending beam portion 50 is provided between the bending beam portion 50 and the groove-shaped arm portion 30, and the width direction in the cross section of the arc-like overhanging portion 40 is provided.
  • the thickness dimension in the thickness direction (Z direction) orthogonal to is set larger than the diameter of the cross section of the bent beam portion 50.
  • the extension length (span) of the bent beam portion 50 can be shortened by the presence of the arcuate overhanging portion 40.
  • the cross section of the bending beam portion 50 is circular at any part, and the bending beam portion is reduced while reducing the cross-sectional area of the bending beam portion 50 on the grooved arm portion 30 side as compared with the current coupling fitting 10C. A sufficient strength of 50 can be secured. Thereby, the process for improving the strength of the bent beam portion 50 can be reduced.
  • the inner peripheral portion of the arc-shaped projecting portion 40 constitutes a part of an arc-shaped locus that is continuous with the bent beam portion 50.
  • the surrounding hole S1 can be maintained at a constant diameter, and it is possible to pass a round bar having a large diameter or to hang a hook ring portion having a larger diameter than the chain.
  • stress concentration can be prevented from occurring in the inner peripheral portion of the arc-shaped protruding portion 40.
  • projection part 40 are the surfaces located in the both ends side of the thickness direction (Z direction) of the groove-shaped arm part 30 And provided flush with the back surface. For this reason, it can prevent that a level
  • the connector 11 includes the through-hole 21 of the insertion arm portion 20 of one of the two fittings 10 and the groove-like arm portion 30 of the other fitting 10.
  • the insertion holes 33a and 33b are aligned, and the insertion holes 33a and 33b of the groove-shaped arm 30 of one of the two coupling fittings 10 and the insertion arm 20 of the other coupling fitting 10 are aligned.
  • the through holes 21 are aligned. And in the alignment state, it has set it as the structure by which the two coupling metal fittings 10 were connected by the connection pin 100 being penetrated by the through-hole 21 and insertion hole 33a, 33b. Therefore, by using the connector 11 of the present embodiment, one of the two coupling fittings 10 is connected to, for example, a chain, and the other member is easily connected to a hook or a hanging fitting. Can be easily realized.
  • the arc-shaped projecting portion 40 is provided only on the groove-shaped arm portion 30 side.
  • an arc-shaped protruding portion may be provided on the insertion arm portion 20 side.
  • the opposing piece portions 31 a and 31 b of the groove-shaped arm portion 30 are provided so that the dimension in the thickness direction (Z direction) is larger than that of the insertion arm portion 20.
  • the dimension in the thickness direction (Z direction) of the opposing piece portions 31a and 31b may be equal to or less than the dimension in the thickness direction (Z direction) of the insertion arm portion 20.
  • the connecting tool 11 is configured by connecting the pair of fittings 10.
  • the coupler may be configured to combine the coupling fitting 10 with another coupling fitting.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

La présente invention concerne un raccord de raccordement qui a une section poutre incurvée ayant une section transversale qui est circulaire même à proximité d'un bras en forme de rainure, capable d'accoupler un autre élément de manière pivotante, et capable de garantir suffisamment la résistance de la section poutre incurvée. Le raccord de raccordement (10) est pourvu : d'une section bras d'insertion (20) pourvue d'un trou traversant (21) dans lequel est insérée une broche de raccordement (100) ; d'une section bras en forme de rainure (30) qui est pourvue de trous traversants (33a, 33b) dans lesquels la broche de raccordement (100) est insérée, et qui est positionnée au niveau d'un côté d'extrémité dans la direction de la largeur faisant face à la section bras d'insertion (20) positionnée au niveau de l'autre côté d'extrémité ; et une section poutre incurvée (50) disposée entre la section bras d'insertion et la section bras en forme de rainure (30). La section poutre incurvée (50) est pourvue d'une section transversale circulaire le long de la totalité dans la direction d'extension ; d'une partie de projection arquée (40), qui réduit la longueur d'extension de la section poutre incurvée (50), est disposée entre la section poutre incurvée (50) et la section bras en forme de rainure (30) ; et la dimension d'épaisseur dans la direction d'épaisseur orthogonale à la direction de la largeur dans une section transversale de la partie de projection arquée (40) est conçue de manière à être supérieure au diamètre de la section transversale de la section poutre incurvée (50).
PCT/JP2017/047187 2017-03-17 2017-12-28 Raccord de raccordement et outil d'accouplement WO2018168162A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017053244A JP6735699B2 (ja) 2017-03-17 2017-03-17 結合金具および連結具
JP2017-053244 2017-03-17

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WO2018168162A1 true WO2018168162A1 (fr) 2018-09-20

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013113400A (ja) * 2011-11-30 2013-06-10 Kito Corp チェーン連結用リンク

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013113400A (ja) * 2011-11-30 2013-06-10 Kito Corp チェーン連結用リンク

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JP2018155343A (ja) 2018-10-04
JP6735699B2 (ja) 2020-08-05

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