WO2000015912A2 - Dispositif de fixation d'accessoires sur une excavatrice - Google Patents

Dispositif de fixation d'accessoires sur une excavatrice Download PDF

Info

Publication number
WO2000015912A2
WO2000015912A2 PCT/KR1999/000447 KR9900447W WO0015912A2 WO 2000015912 A2 WO2000015912 A2 WO 2000015912A2 KR 9900447 W KR9900447 W KR 9900447W WO 0015912 A2 WO0015912 A2 WO 0015912A2
Authority
WO
WIPO (PCT)
Prior art keywords
attachment
bolt
arm
unit
holding
Prior art date
Application number
PCT/KR1999/000447
Other languages
English (en)
Other versions
WO2000015912A3 (fr
Inventor
Chul Ho Han
Original Assignee
Chul Ho Han
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 Chul Ho Han filed Critical Chul Ho Han
Priority to AU53068/99A priority Critical patent/AU5306899A/en
Publication of WO2000015912A2 publication Critical patent/WO2000015912A2/fr
Publication of WO2000015912A3 publication Critical patent/WO2000015912A3/fr

Links

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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Definitions

  • the present invention relates, in general, to a device for detachably holding an attachment to the outside end of an arm unit in power excavators and, more particularly, to an attachment holding device free from lengthening an originally designed distance from the outside end of the arm unit to the lower end of an attachment irrespective of use of a link unit as an attachment holding means, thus being free from undesirably reducing the excavation power of an excavator.
  • a link unit or an attachment holding device for allowing an easy change of attachments in power excavators, has been proposed and preferably used.
  • the link unit is set in the outside end of an arm unit and is designed to allow an existing attachment to be easily changed with another one when necessary.
  • An example of conventional link units, used as an attachment holding device for power excavators, may be referred to Korean U.M. Publication No. 95-5247, applied by the inventor of this invention.
  • This link unit is designed to be mounted to the outside end of an arm unit at its upper end using a holding bolt.
  • a desired attachment is removably mounted to the lower end of the link unit.
  • this link unit is problematic in that it undesirably increases the distance between the outside end of the arm unit to the lower end of an attachment by the length of the link unit. This lengthened distance finally reduces the excavation power of the excavator.
  • the above link unit is mounted to the outside end of an arm unit at its upper end using a holding bolt.
  • the connection bolt of the attachment is inserted into a bolt opening formed on the lower end of the link unit. Therefore, the distance between the outside end of the arm unit to the lower end of the attachment is undesirably lengthened by the distance between the holding bolt to the connection bolt.
  • the excavation power of the excavator is reduced in inverse proportion to the lengthened distance. This finally reduces working efficiency during an excavating work of the excavator.
  • an object of the present invention is to provide a device for detachably holding an attachment to the outside end of an arm unit in power excavators, which is free from lengthening an originally designed distance from the outside end of the arm unit to the lower end of the attachment irrespective of use of a link unit as an attachment holding means, and which is thus free from reducing the excavation power of an excavator.
  • Another object of the present invention is to provide a device for detachably holding attachments in power excavators, which is designed to almost completely prevent an attachment from colliding with the body of an excavator and to prevent the excavator from overturning, incurring safety hazards while working.
  • the present invention provides a device for detachably holding an attachment to an arm unit of an excavator, comprising: a link frame provided with sub-arm connection means at an upper part of its central portion for being held on an outside end of a sub-arm of the arm unit; a fixed holding bolt provided at a first end portion of the link frame for being used as a rotating shaft of the attachment while coupling the attachment to an outside end of a main arm of the arm unit; a hydraulic cylinder actuator set in the link frame while being fixed to the link frame by a fixing pin; and a movable holding bolt provided at a second end portion of the link frame and coupled to an outside end of a piston rod of the cylinder actuator, thus being movable by the actuator, the movable holding bolt being used for holding the attachment in cooperation with the fixed holding bolt and applying a hydraulic force from the sub-arm to the attachment.
  • Fig. 1 is a perspective view of an attachment holding device in accordance with the primary embodiment of the present invention, with the device and a conventional bucket being separated from each other;
  • Fig. 2 is a partially sectioned view, showing the construction of the attachment holding device of Fig. 1;
  • Fig. 3 is a partially broken plan view of a link unit included in the device of Fig. 1;
  • Figs. 4a and 4b are side views, showing an operational effect of the device of Fig. 1, in which:
  • Fig. 4a shows a bucket before it is locked to the link unit of the device; and Fig. 4b shows the bucket completely locked to the link unit;
  • Fig. 5 is a perspective view of an attachment holding device in accordance with the second embodiment of the present invention, with the device and a conventional bucket being separated from each other;
  • Fig. 6 is a partially sectioned view, showing the construction of the attachment holding device of Fig. 5;
  • Fig. 7 is a partially broken plan view of a link unit included in the device of Fig. 5; and Figs. 8a and 8b are side views, showing an operational effect of the device of Fig. 5, in which:
  • Fig. 8a shows a bucket before it is locked to the link unit of the device
  • Fig. 8b shows the bucket completely locked to the link unit.
  • Figs. 1 to 4b show the construction and operation of an attachment holding device in accordance with the primary embodiment of this invention.
  • the attachment holding device of this invention comprises two first bolt hooks 13 and two second bolt hooks 14, which are formed on the upper end portion of an attachment 12 at front and rear parts of said upper end portion.
  • the attachment 12 is referred to as a conventional bucket for ease of description.
  • another attachment such as a breaker, may be used with the holding device of this invention without affecting the functioning of the invention.
  • the device also comprises a link unit 1.
  • the link unit 1 consists of a link frame 2, which has a fixed holding bolt 3 at its first end portion.
  • the link unit 1 thus commonly engages with both the first bolt hooks 13 of the bucket 12 and the outside end of a main arm 15 at the fixed holding bolt 3.
  • the above link unit 1 also has two sub-arm connection bosses 4 at the upper part of its central portion, and so the unit 1 is assembled with the outside end of a sub-arm 16 of the arm unit at the bosses 4 using a separate holding bolt 17.
  • Two hydraulic cylinder actuators 7 are set in the link frame 2.
  • the two cylinder actuators 7 are commonly fixed to the link frame 2 by a fixing pin 9.
  • a movable holding bolt 5 is coupled to the outside ends of the piston rods 8 of said two cylinder actuators 7, thus being operable in conjunction with the two actuators 7.
  • the movable holding bolt 5 is perpendicularly coupled to the two piston rods 8.
  • a bolt guide means 6, or a guide hole, is formed on the link frame 2 and guides a hydraulically actuated reciprocating action of the movable holding bolt 5.
  • a draft hook 11 is formed on the second end portion of the link frame 2.
  • the unit 1 may be used as a drafting means with the draft hook 11.
  • each of the fixed and movable holding bolts 3 and 5 projects from both sides of the link frame 2 outwardly at both ends thereof. Therefore, the two holding bolts 3 and 5 of the link unit 1 are easily and stably caught by the two sets of bolt hooks 13 and 14 of the bucket 12, respectively.
  • the reference numeral 10 denotes a directional control solenoid valve for the two cylinder actuators 7.
  • the link unit 1 is mounted to the outside end of the sub-arm 16 at the two sub-arm connection bosses 4 using the separate holding bolt 17 fitted into the bosses 4.
  • the link unit 1 is also mounted to the outside end of the main arm 15 at the fixed holding bolt 3.
  • an attachment or a conventional bucket 12 is attached to the link unit 1.
  • an operator has to control the hydraulic circuit system of the excavator, thus appropriately moving the main and sub arms 15 and 16 of the arm unit so as to lock the fixed holding bolt 3 of the unit 1 into the first bolt hooks 13 of the bucket 12 as shown in Fig. 4a.
  • the arm unit is gradually and appropriately moved inwardly toward the excavator body, and so the bucket 12 is rotated clockwise around the fixed holding bolt 3 in the drawings.
  • the back of the bucket 12 is thus raised up until the back of the bucket 12 is brought into contact with the second end portion of the link unit 1 as shown in Fig. 4b.
  • the movable holding bolt 5 of the link unit 1 is positioned in front of the second bolt hooks 14 of the bucket 12.
  • the hydraulic cylinder actuators 7 are operated under control of the directional control valve 10 so as to extend the piston rods 8 forwardly.
  • the movable holding bolt 5 is thus moved forwards under the guide of the opening 6 of the link frame 2, and so the bolt 5 is finally fitted into the second bolt hooks 14 of the bucket 12. Therefore, the bucket 12 is completely held on the outside end of the arm unit by the link unit 1.
  • the two cylinder actuators 7 are operated under the control of the valve 10 so as to retract the piston rods 8 into the cylinders of the actuators 7.
  • the movable holding bolt 5 is thus moved backwards under the guide of the opening 6 of the link frame 2, and so the bolt 5 is removed from the second bolt hooks 14 of the bucket 12.
  • the arm unit is operated by controlling the hydraulic circuit system of the excavator, thus appropriately moving the main and sub arms 15 and 16 of the arm unit so as to remove the fixed holding bolt 3 of the unit 1 from the first bolt hooks 13 of the bucket 12. Therefore, the bucket 12 is removed from the link unit 1.
  • the unit 1 When the link unit 1 is free from any attachment 12, the unit 1 may be used as a drafting means with the draft hook 11. That is, since the link frame 2 of this invention is provided with the draft hook 11 at its second end portion, the link unit 1 may be preferably used as a drafting means in place of a conventional draft hook fixedly mounted on the back of a bucket having a weight not less than 1 ton. Due to the draft hook 11, it is possible to improve work efficiency during a drafting operation.
  • Figs. 5 to 8b show the construction and operation of an attachment holding device in accordance with the second embodiment of this invention.
  • the attachment holding device of this embodiment comprises two bolt hooks 13 and a support plate 18, which are formed on the upper end portion of an attachment 12, or a bucket, at front and rear parts of said upper end portion.
  • Two bolt receiving holes 19 are formed on the support plate 18 while spacing out at an interval.
  • the device also comprises a link unit 1.
  • the link unit 1 consists of a link frame 2, which has a fixed holding bolt 3 at its first end portion.
  • the link unit 1 thus commonly engages with both the two bolt hooks 13 of the bucket 12 and the outside end of a main arm 15 at the fixed holding bolt 3.
  • the above link unit 1 also has two sub-arm connection bosses 4 at the upper part of its central portion, and so the unit 1 is assembled with the outside end of a sub-arm 16 of the arm unit at the bosses 4 using a separate holding bolt 17.
  • two hydraulic cylinder actuators 7 are set in the link frame 2.
  • the two cylinder actuators 7 are commonly fixed to the link frame 2 by a fixing pin 9.
  • the link unit 1 also has a draft hook 11 on the second end portion of the link frame 2 in the same manner as that described for the primary embodiment.
  • Two movable holding bolts 5' are coupled to the outside ends of the piston rods 8 of said two cylinder actuators 7, respectively, thus being operable in conjunction with the two actuators 7.
  • the movable holding bolts 5' are axially coupled to the two piston rods 8.
  • a bolt guide means 20, consisting of two axial guide holes, is formed on the link frame 2 and guides a hydraulically actuated reciprocating action of the movable holding bolts 5'.
  • the fixed holding bolt 3 projects from both sides of the link frame 2 outwardly at both ends thereof. Therefore, the fixed holding bolt 3 of the link unit 1 is easily and stably caught by the two bolt hooks 13 of the bucket 12, respectively.
  • the bolt receiving holes 19 of the support plate 18 are individually tapered at their inside end portion, thus allowing the attachment 12 to be firmly locked to the link unit 1.
  • the link unit 1 is mounted to the outside end of the sub-arm 16 at the two sub-arm connection bosses 4 using the separate holding bolt 17 fitted into the bosses 4.
  • the link unit 1 is also mounted to the outside end of the main arm 15 at the fixed holding bolt 3.
  • an attachment or a conventional bucket 12 is attached to the link unit 1.
  • an operator has to control the hydraulic circuit system of the excavator, thus appropriately moving the main and sub arms 15 and 16 of the arm unit so as to lock the fixed holding bolt 3 of the unit 1 into the bolt hooks 13 of the bucket 12 as shown in Fig. 8a.
  • the arm unit is gradually and appropriately moved inwardly toward the excavator body, and so the bucket 12 is rotated clockwise around the fixed holding bolt 3 in the drawings.
  • the back of the bucket 12 is thus raised up until the back of the bucket 12 is brought into contact with the second end portion of the link unit 1 as shown in Fig. 8b.
  • the two movable holding bolts 5' of the link unit 1 are positioned in front of the bolt receiving holes 19 of the bucket 12.
  • the hydraulic cylinder actuators 7 are operated under control of the directional control valve 10 so as to extend the piston rods 8 forwardly.
  • the movable holding bolts 5 1 are thus moved forwards under the guide of the holes 19 of the link frame 2, and so the bolts 5' are finally fitted into the bolt receiving holes 19 of the bucket 12. Therefore, the bucket 12 is completely held on the outside end of the arm unit by the link unit 1.
  • the two cylinder actuators 7 are operated under the control of the valve 10 so as to retract the piston rods 8 into the cylinders of the actuators 7.
  • the movable holding bolts 5' are thus moved backwards, and so the bolts 5' are removed from the holes 19 of the bucket 12.
  • the arm unit is operated by controlling the hydraulic circuit system of the excavator, thus appropriately moving the main and sub arms 15 and 16 of the arm unit so as to remove the fixed holding bolt 3 of the unit 1 from the bolt hooks 13 of the bucket 12. Therefore, the bucket 12 is removed from the link unit 1.
  • the present invention provides a device for detachably holding an attachment, such as a bucket or a breaker, to the outside end of an arm unit in power excavators.
  • an attachment such as a bucket or a breaker
  • two sets of bolt hooks are provided on an attachment.
  • the device also has a link unit, comprising fixed and movable holding bolts set in a link frame.
  • the movable bolt is operated by a hydraulic cylinder actuator.
  • the attachment is mounted to the outside end of a main arm of the arm unit through the fixed holding bolt and is locked to the outside end of a sub-arm of the arm unit through the movable holding bolt. It is thus easy to detachably mount the attachment to the outside end of the arm unit.
  • the movable bolt is perpendicularly coupled to the piston rod of the cylinder actuator.
  • the movable bolt is axially coupled to the piston rod of the cylinder actuator. Therefore, in the device of the second embodiment, a support plate, having a bolt receiving means, is provided on the attachment in place of the second bolt hooks.
  • the attachment holding device also allows an attachment to be mounted to the arm unit as if no links were used at the junction between the attachment and the arm unit. Therefore, the device does not lengthen the originally designed distance from the outside end of the arm unit to the lower end of the attachment irrespective of the use of the link unit.
  • the attachment holding device of this invention is thus free from reducing the excavation power of the excavator.
  • the device almost completely prevents any attachment from colliding with the excavator body and prevents the excavator from overturning, incurring safety hazards while working.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)

Abstract

L'invention concerne également un dispositif permettant de fixer démontable un accessoire tel qu'un godet ou un brise-béton sur l'extrémité extérieure du module bras d'une excavatrice. Selon la réalisation préférée, deux ensembles de crochets à boulons équipent un accessoire. Le dispositif comporte également un module de liaison, comprenant des boulons de retenue fixes et mobiles disposés dans un châssis de liaison. L'accessoire, qui se monte sur l'extrémité du bras principal du module bras via le boulon de retenue fixe, est verrouillé sur l'extrémité extérieure du sous-module bras via le boulon de retenue mobile. Il est ainsi possible de monter déposable l'accessoire sur l'extrémité extérieure du module bras. Le dispositif permet également le montage de l'accessoire sur le module bras comme si aucune liaison n'était utilisée à la jonction entre l'accessoire et le module bras. Ainsi, le dispositif ne vient-il pas augmenter la longueur séparant d'origine l'extrémité extérieure du module bras et l'extrémité inférieure de l'accessoire quelle que soit l'utilisation que l'on fasse du module de liaison. Cela fait que le dispositif ne vient pas obérer la puissance de l'excavatrice, ce qui exclut presque complètement que les accessoires ne viennent heurter le corps de l'excavatrice, et par conséquent que l'excavatrice ne se renverse et génère des situations de danger pendant le travail.
PCT/KR1999/000447 1998-09-15 1999-08-12 Dispositif de fixation d'accessoires sur une excavatrice WO2000015912A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53068/99A AU5306899A (en) 1998-09-15 1999-08-12 Device for holding attachments in power excavators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1998/38126 1998-09-15
KR1019980038126A KR100310003B1 (ko) 1998-09-15 1998-09-15 굴삭기의 작업기구 교환장치

Publications (2)

Publication Number Publication Date
WO2000015912A2 true WO2000015912A2 (fr) 2000-03-23
WO2000015912A3 WO2000015912A3 (fr) 2000-05-25

Family

ID=19550732

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1999/000447 WO2000015912A2 (fr) 1998-09-15 1999-08-12 Dispositif de fixation d'accessoires sur une excavatrice

Country Status (3)

Country Link
KR (1) KR100310003B1 (fr)
AU (1) AU5306899A (fr)
WO (1) WO2000015912A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2192478A1 (es) * 2002-02-25 2003-10-01 Martinez De Lahidalga Aracama Sistema de enganche entre brazo y accesorios de excavadoras.
GB2395705B (en) * 2001-09-26 2005-06-15 Hanwoo Tnc Corp Attachment coupling device for heavy machinery
WO2005113903A1 (fr) * 2004-05-21 2005-12-01 Il-Hwan Joo Engin de chantier a fonction de travaux d'excavation et de chargement
AT500900B1 (de) * 2003-10-09 2007-06-15 Wimmer Alois Ing Schnellwechselkupplung zur befestigung der arbeitswerkzeuge an einem baggerausleger
WO2009134154A1 (fr) * 2008-05-01 2009-11-05 Jb Attachments Limited Coupleur à chevilles
CN104471150A (zh) * 2012-07-17 2015-03-25 S&C株式会社 挖掘机用振动装置
JP2016104929A (ja) * 2014-12-01 2016-06-09 日立建機株式会社 フック付バケットリンク装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101810837B1 (ko) * 2011-08-12 2017-12-20 삼성전자주식회사 식기 세척기
KR101882692B1 (ko) 2018-01-11 2018-07-27 손용민 개선된 견인고리를 갖는 굴삭기용 링크
KR102156813B1 (ko) * 2019-12-12 2020-09-16 곽명진 링크수단이 구비된 굴삭기
KR102400428B1 (ko) 2020-09-11 2022-05-19 이호태 굴삭기용 후크의 안전 걸이장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169582A (en) * 1985-01-15 1986-07-16 Samuel Trevor Mason Quick-change fitting for load shifting implement
WO1991018716A1 (fr) * 1990-06-08 1991-12-12 Esco Corporation Dispositif de fixation rapide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169582A (en) * 1985-01-15 1986-07-16 Samuel Trevor Mason Quick-change fitting for load shifting implement
WO1991018716A1 (fr) * 1990-06-08 1991-12-12 Esco Corporation Dispositif de fixation rapide

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2395705B (en) * 2001-09-26 2005-06-15 Hanwoo Tnc Corp Attachment coupling device for heavy machinery
ES2192478A1 (es) * 2002-02-25 2003-10-01 Martinez De Lahidalga Aracama Sistema de enganche entre brazo y accesorios de excavadoras.
AT500900B1 (de) * 2003-10-09 2007-06-15 Wimmer Alois Ing Schnellwechselkupplung zur befestigung der arbeitswerkzeuge an einem baggerausleger
WO2005113903A1 (fr) * 2004-05-21 2005-12-01 Il-Hwan Joo Engin de chantier a fonction de travaux d'excavation et de chargement
AU2005245747B2 (en) * 2004-05-21 2009-03-19 Il-Hwan Joo Construction equipment with excavation and loading function
WO2009134154A1 (fr) * 2008-05-01 2009-11-05 Jb Attachments Limited Coupleur à chevilles
CN104471150A (zh) * 2012-07-17 2015-03-25 S&C株式会社 挖掘机用振动装置
JP2016104929A (ja) * 2014-12-01 2016-06-09 日立建機株式会社 フック付バケットリンク装置

Also Published As

Publication number Publication date
AU5306899A (en) 2000-04-03
WO2000015912A3 (fr) 2000-05-25
KR100310003B1 (ko) 2001-11-24
KR20000019841A (ko) 2000-04-15

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