WO2017090113A1 - Attelage - Google Patents

Attelage Download PDF

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Publication number
WO2017090113A1
WO2017090113A1 PCT/JP2015/083039 JP2015083039W WO2017090113A1 WO 2017090113 A1 WO2017090113 A1 WO 2017090113A1 JP 2015083039 W JP2015083039 W JP 2015083039W WO 2017090113 A1 WO2017090113 A1 WO 2017090113A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
latch bar
attachment
coupler
shaft member
Prior art date
Application number
PCT/JP2015/083039
Other languages
English (en)
Japanese (ja)
Inventor
憲一 樋口
晃 橋本
吉田　剛
久夫 浅田
Original Assignee
株式会社小松製作所
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 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to PCT/JP2015/083039 priority Critical patent/WO2017090113A1/fr
Publication of WO2017090113A1 publication Critical patent/WO2017090113A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts

Definitions

  • the present invention relates to a coupler for attaching an attachment to a work vehicle.
  • a variety of attachments such as buckets, cutters, breakers, or forks can be attached to work vehicles such as hydraulic excavators.
  • a coupler is known as a part for easily attaching such an attachment to a work vehicle.
  • the coupler of Patent Document 1 has a pair of side plates, a mounting member, and a wedge-shaped latch bar.
  • the attachment member is disposed between the pair of side plates.
  • Each of the pair of side plates is provided with a boss portion.
  • the boss is locked to a hook provided on the bracket of the attachment.
  • the latch bar is locked to a notch provided on the bracket of the attachment by being fixed to the mounting member with a bolt. Thereby, the attachment is attached to the coupler.
  • the attachment when the latch bar is attached to the attachment member, the attachment is attached to the coupler and is firmly prevented from coming off. However, it is preferable that the attachment is more securely prevented from coming off the coupler.
  • An object of the present invention is to provide a coupler capable of firmly retaining an attachment.
  • the coupler includes a pair of side plates, a mounting member, a latch bar, a fixing member, a shaft member, and a retaining portion.
  • the attachment member is disposed between the pair of side plates.
  • the latch bar has a through hole, is attached to the attachment member, and is locked to the bracket of the attachment.
  • the fixing member fixes the latch bar to the mounting member.
  • the shaft member has a first end connected to the mounting member and a second end opposite to the first end. The shaft member is inserted into the through hole.
  • the retaining portion is connected to the second end portion, has an outer shape larger than the through hole, and is disposed with a gap between the latch bar.
  • the latch bar is prevented from coming off by the retaining portion. Therefore, it is possible to firmly prevent the attachment from coming off the coupler.
  • the retaining portion is disposed with a gap between the latch bar and the latch bar. Therefore, the load from the attachment is difficult to propagate directly to the retaining portion. Therefore, loosening of the retaining portion can be prevented. Furthermore, since there is a gap between the retaining portion and the latch bar, the latch bar moves within the gap when the fixing member is loosened. Therefore, the looseness of the fixing member can be easily found.
  • FIG. 1 is a side view showing a part of a work vehicle 100 to which a coupler 1 according to the embodiment is mounted.
  • FIG. 2 is a side view showing a part of the coupler 1 and the work vehicle 100 before mounting.
  • the work vehicle is, for example, a hydraulic excavator.
  • the work vehicle 100 is not limited to a hydraulic excavator, and may be another work vehicle.
  • the work vehicle 100 includes an arm 101, a link member 102, and an attachment 103.
  • a bucket is illustrated as an example of the attachment 103, but the attachment 103 is not limited to the bucket, and may be another attachment such as a cutter, a breaker, or a fork.
  • the coupler 1 is connected to the arm 101 via the arm pin 104.
  • the coupler 1 is connected to the link member 102 via the link pin 105.
  • the attachment 103 has a bracket 106.
  • One end of the bracket 106 is provided with a hook 107 having an opening recessed in an arc shape.
  • a wedge-shaped notch 108 is provided at the other end of the bracket 106.
  • a receiving portion 109 that is recessed in an arc shape is provided on the upper edge of the bracket 106.
  • FIG. 3 is a perspective view of the coupler 1.
  • FIG. 4 is an exploded perspective view of the coupler 1.
  • the coupler 1 includes a pair of side plates 2, 3, a bottom plate 4, a mounting member 5, a latch bar 6, a fixing member 7, a shaft member 8, and a retaining portion 9.
  • the pair of side plates 2 and 3 have a first side plate 2 and a second side plate 3.
  • the first side plate 2 and the second side plate 3 are disposed to face each other.
  • the first side plate 2 is provided with a first boss portion 11 and a second boss portion 12.
  • the first boss portion 11 and the second boss portion 12 protrude from the first side plate 2.
  • the second side plate 3 is provided with a first boss portion 13 and a second boss portion 14.
  • the first boss portion 13 and the second boss portion 14 protrude from the second side plate 3.
  • a first pin hole 15 is provided in the first boss portion 11 of the first side plate 2, and a first pin hole 16 is provided in the first boss portion 13 of the second side plate 3.
  • the link pins 105 described above are inserted into the first pin holes 15 and 16.
  • the second boss portion 12 of the first side plate 2 is provided with a second pin hole 17, and the second boss portion 14 of the second side plate 3 is provided with a second pin hole 18.
  • the arm pin 104 described above is inserted into the second pin holes 17 and 18.
  • a first protrusion 21 is provided at one end of the first side plate 2.
  • the upper surface of the first protrusion 21 has a first receiving surface 22 that comes into contact with the latch bar 6.
  • a second protrusion 23 is provided at one end of the second side plate 3.
  • the upper surface of the second protrusion 23 has a second receiving surface 24 that contacts the latch bar 6.
  • the bottom plate 4 connects the first side plate 2 and the second side plate 3.
  • the bottom plate 4 is disposed between the first side plate 2 and the second side plate 3 and is attached to the first side plate 2 and the second side plate 3.
  • the attachment member 5 is disposed between the first side plate 2 and the second side plate 3 and attached to the first side plate 2 and the second side plate 3.
  • the attachment member 5 is a plate-like member that extends between the first side plate 2 and the second side plate 3.
  • the latch bar 6 is attached to the attachment member 5 and is locked to the bracket 106 of the attachment 103.
  • the latch bar 6 includes a first locking part 31, a second locking part 32, and an intermediate part 33.
  • the intermediate portion 33 is located between the first locking portion 31 and the second locking portion 32 in the longitudinal direction of the latch bar 6.
  • the first locking portion 31 and the second locking portion 32 each have a wedge shape.
  • the first locking portion 31 is disposed between the first receiving surface 22 of the first projecting portion 21 and the notch 108 of the attachment 103, and is locked to the notch 108.
  • the second locking portion 32 is disposed between the second receiving surface 24 of the second protrusion 23 and the notch 108 of the attachment 103 and is locked to the notch 108.
  • FIG. 5 is a cross-sectional view showing a part of the coupler 1.
  • the latch bar 6 has a through hole 34, a first attachment hole 35, and a second attachment hole 36.
  • the first mounting hole 35 and the second mounting hole 36 penetrate the latch bar 6 in the same direction as the through hole 34.
  • the through hole 34, the first mounting hole 35, and the second mounting hole 36 are arranged side by side in the longitudinal direction of the latch bar 6.
  • the through hole 34 is located between the first mounting hole 35 and the second mounting hole 36 in the longitudinal direction of the latch bar 6.
  • the fixing member 7 fixes the latch bar 6 to the mounting member 5.
  • the fixing member 7 has a first fixing bolt 41 and a second fixing bolt 42.
  • the first fixing bolt 41 is inserted into the first mounting hole 35.
  • the second fixing bolt 42 is inserted into the second mounting hole 36.
  • the attachment member 5 has a first hole 43 and a second hole 44.
  • the first fixing bolt 41 is inserted into the first hole 43.
  • the second fixing bolt 42 is inserted into the second hole 44.
  • a first nut 45 is attached to the edge of the first hole 43, and the first fixing bolt 41 is screwed into the first nut 45.
  • a second nut 46 is attached to the edge of the second hole 44, and the second fixing bolt 42 is screwed into the second nut 46.
  • the first fixing bolt 41 is attached to the latch bar 6 via the first washer 47.
  • the first washer 47 is sandwiched and fixed between the head portion 410 of the first fixing bolt 41 and the latch bar 6.
  • the second fixing bolt 42 is attached to the latch bar 6 via the second washer 48.
  • the second washer 48 is sandwiched and fixed between the head portion 420 of the second fixing bolt 42 and the latch bar 6.
  • the shaft member 8 is connected to the mounting member 5.
  • the shaft member 8 is inserted into the through hole 34.
  • the shaft member 8 has a first end 51 and a second end 52.
  • the first end 51 is connected to the attachment member 5.
  • the second end 52 is located on the opposite side of the first end 51.
  • the shaft member 8 is longer than the through hole 34 in the axial direction of the shaft member 8.
  • the second end 52 protrudes from the through hole 34.
  • a gap G ⁇ b> 1 is provided between the outer peripheral surface of the shaft member 8 and the inner peripheral surface of the through hole 34.
  • the retaining portion 9 is connected to the second end portion 52.
  • the retaining portion 9 has a larger outer shape than the through hole 34.
  • the retaining portion 9 is arranged with a gap G ⁇ b> 2 between the latch member 6 and the latch bar 6 in the axial direction of the shaft member 8.
  • the retaining portion 9 has a retaining bolt 53 and a retaining washer 54.
  • the shaft member 8 is provided with a screw hole 55 extending in the axial direction of the shaft member 8.
  • the retaining bolt 53 is inserted into the screw hole 55 of the shaft member 8.
  • the retaining bolt 53 is fixed to the second end 52 of the shaft member 8 by being screwed into the screw hole 55 of the shaft member 8.
  • the retaining washer 54 is disposed between the head portion 530 of the retaining bolt 53 and the second end portion 52 of the shaft member 8.
  • the retaining washer 54 has the same shape as the first washer 47 and the second washer 48.
  • the retaining washer 54 has the same plate thickness as the first washer 47 and the second washer 48.
  • the inner diameter of the retaining washer 54 is smaller than the outer diameter of the shaft member 8.
  • the outer diameter of the retaining washer 54 is larger than the inner diameter of the through hole 34.
  • the retaining washer 54 is sandwiched and fixed between the head portion 530 of the retaining bolt 53 and the second end portion 52 of the shaft member 8. In a state where the latch bar 6 is fixed to the mounting member 5 by the first fixing bolt 41 and the second fixing bolt 42, the retaining washer 54 is disposed with a gap G2 between the latch bar 6 and the shaft member 8 in the axial direction. Is done. Therefore, in a state where the latch bar 6 is fixed to the mounting member 5 by the first fixing bolt 41 and the second fixing bolt 42, the retaining washer 54 is not in contact with the latch bar 6.
  • the gap G2 is larger than the thickness of the retaining washer 54.
  • the gap G2 is smaller than the thickness of the latch bar 6 in the axial direction of the shaft member 8.
  • the gap G ⁇ b> 2 is smaller than the length of the retaining bolt 53 in the axial direction of the shaft member 8.
  • the size of the gap G2 is preferably determined in consideration of the load received by the retaining portion 9, and is not limited to the size described above.
  • the length of the retaining bolt 53 is longer than the length of the first fixing bolt 41 and the second fixing bolt 42.
  • the head portion 530 of the retaining bolt 53 has the same outer shape as the head portion 410 of the first fixing bolt 41.
  • the head portion 530 of the retaining bolt 53 has the same outer shape as the head portion 420 of the second fixing bolt 42.
  • the coupler 1 As described above, in the coupler 1 according to the present embodiment described above, even if the first fixing bolt 41 and the second fixing bolt 42 are broken, the latch bar 6 is prevented from being detached by the retaining portion 9. Therefore, the attachment 103 can be securely prevented from coming off the coupler 1.
  • the retaining portion 9 is disposed with a gap G2 between it and the latch bar 6. Therefore, the load from the attachment 103 is difficult to propagate directly to the retaining portion 9. Therefore, loosening or breakage of the retaining portion 9 can be prevented.
  • the head portion 530 of the retaining bolt 53 has the same outer shape as the head portion 410 of the first fixing bolt 41 and the head portion 420 of the second fixing bolt 42. Therefore, the retaining bolt 53 can be fastened using a tool for fastening the first fixing bolt 41 and the second fixing bolt 42. Thereby, working efficiency can be improved.
  • the shape of the first side plate 2 and the second side plate 3 may be changed.
  • the shape of the bottom plate 4, the attachment member 5, or the latch bar 6 may be changed.
  • the fixing member 7 is not limited to a bolt but may be another member.
  • the number of fixing bolts is not limited to two and may be one. Alternatively, the number of fixing bolts may be more than two.
  • the number of shaft members 8 is not limited to one and may be plural.
  • the shaft member 8 may be welded to the attachment member 5.
  • the shaft member 8 may be formed integrally with the mounting member 5.
  • the shaft member 8 may be separate from the mounting member 5.
  • FIG. 6 is a cross-sectional view showing a part of the coupler 1 according to the first modification.
  • the shaft member 8 may be separate from the mounting member 5.
  • the retaining bolt 53 may be longer than the shaft member 8.
  • the retaining bolt 53 may be inserted into a third hole 56 provided in the attachment member 5 and fixed to the attachment member 5.
  • the shaft member 8 may be fixed by being sandwiched between the retaining washer 54 and the attachment member 5.
  • FIG. 7 is a cross-sectional view showing a part of the coupler 1 according to the second modification.
  • the shaft member 8 may be separate from the mounting member 5.
  • the retaining bolt 53 may be connected to the mounting member 5.
  • the retaining bolt 53 may be welded to the mounting member 5.
  • the retaining bolt 53 may protrude from the second end portion 52 of the shaft member 8.
  • the retaining washer 54 may be fixed to the second end 52 of the shaft member 8 by a retaining nut 49 that is screwed into the retaining bolt 53.
  • FIG. 8 is a perspective view showing the latch bar 6 of the coupler 1 according to the third modification.
  • the through hole 34, the first attachment hole 35, and the second attachment hole 36 are not arranged side by side in the longitudinal direction of the latch bar 6, but may be arranged so as to be shifted from each other.
  • a protrusion 57 may be provided on the latch bar 6.
  • the protruding portion 57 protrudes in a direction that intersects the longitudinal direction of the latch bar 6.
  • the through hole 34 may be provided in the protruding portion 57.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

Cette invention concerne un attelage, comprenant une paire de plaques latérales, un élément de montage, une barre de verrouillage, un élément d'ancrage, un élément d'arbre, et une partie de retenue. L'élément de montage est disposé entre la paire de plaques latérales. La barre de verrouillage comprend un trou traversant, elle est montée sur l'élément de montage, et elle est verrouillée contre une patte de fixation. L'élément d'ancrage ancre la barre de verrouillage sur l'élément de montage. L'élément d'arbre comprend une première extrémité qui est reliée à l'élément de montage, et une seconde extrémité sur le côté opposé à la première extrémité. L'élément d'arbre est inséré dans le trou traversant. La partie de retenue est reliée à la seconde extrémité, elle présente une forme extérieure qui est plus large que le trou traversant, et elle est disposée de manière à être espacée de la barre de verrouillage.
PCT/JP2015/083039 2015-11-25 2015-11-25 Attelage WO2017090113A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/083039 WO2017090113A1 (fr) 2015-11-25 2015-11-25 Attelage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/083039 WO2017090113A1 (fr) 2015-11-25 2015-11-25 Attelage

Publications (1)

Publication Number Publication Date
WO2017090113A1 true WO2017090113A1 (fr) 2017-06-01

Family

ID=58763313

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/083039 WO2017090113A1 (fr) 2015-11-25 2015-11-25 Attelage

Country Status (1)

Country Link
WO (1) WO2017090113A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5890871A (en) * 1997-12-10 1999-04-06 Caterpillar Inc. Latching mechanism for a quick coupler
WO2002066750A1 (fr) * 2001-02-23 2002-08-29 Mclellan Robin S Appareil permettant de coupler de façon liberable un accessoire a un excavateur
EP1496163A1 (fr) * 2003-07-07 2005-01-12 Eurosteel B.V. Système de changement rapide et godet d'excavatrice ayant un tel système

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5890871A (en) * 1997-12-10 1999-04-06 Caterpillar Inc. Latching mechanism for a quick coupler
WO2002066750A1 (fr) * 2001-02-23 2002-08-29 Mclellan Robin S Appareil permettant de coupler de façon liberable un accessoire a un excavateur
EP1496163A1 (fr) * 2003-07-07 2005-01-12 Eurosteel B.V. Système de changement rapide et godet d'excavatrice ayant un tel système

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