WO2000049233A1 - Quick-coupling assembly - Google Patents

Quick-coupling assembly Download PDF

Info

Publication number
WO2000049233A1
WO2000049233A1 PCT/FI2000/000128 FI0000128W WO0049233A1 WO 2000049233 A1 WO2000049233 A1 WO 2000049233A1 FI 0000128 W FI0000128 W FI 0000128W WO 0049233 A1 WO0049233 A1 WO 0049233A1
Authority
WO
WIPO (PCT)
Prior art keywords
pin
pins
sleeve
quick
coupling assembly
Prior art date
Application number
PCT/FI2000/000128
Other languages
French (fr)
Inventor
Yrjö RAUNISTO
Original Assignee
Raunisto, Airi
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 Raunisto, Airi filed Critical Raunisto, Airi
Priority to AU28073/00A priority Critical patent/AU2807300A/en
Priority to KR1020017010555A priority patent/KR20010104344A/en
Priority to JP2000599950A priority patent/JP2002537504A/en
Priority to EP00906387A priority patent/EP1177350A1/en
Publication of WO2000049233A1 publication Critical patent/WO2000049233A1/en

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
    • E02F3/3613—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with means for absorbing any play therebetween
    • 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
    • E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
    • 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 invention relates to a quick-coupling assembly presented in the preamble of patent claim 1.
  • a quick-coupling assembly for attachment of scoops, bulldozer blades or other tools to a working machine e.g. from publication WO 95/21969.
  • a connecting piece adapted to the working machine boom top is presented, which has a cylindrical body and where out of the body ends pins protrude by means of hydraulic pressure. The pins are retractred also by pressure. At least one of the protruding pins is the cylinder of the hydraulic cylinder, by means of which the pin movements are produced.
  • the advantage of the solution is that the outer surfaces of the protruding pins are not faces that can be tightened against hydraulic pressure, so that possible damages in the long run are of no importance for the function.
  • the disadvantage of this solution is that the protruding pin strives to rotate and usually even always rotates in the sleeve of the tool, for instance a the scoop, when the scoop is rotated.
  • the protruding pin does not rotate in the tool sleeve, since fastening with bearings is arranged within the assembly, where necessary bearings can be placed into protected space.
  • the aim has been to prevent the pin to rotate anymore in the sleeve.
  • the pins are pressed by hydraulic power all the time in protruded state. In this way the pin joint is stiffened especially if the pin is made sligtly conical and, correspondingly, the sleeve of the tool a cone.
  • the tool is then free from backlash, but by means of the rotating pin attached to boom of the working machine. Sufficient support against bending and other forces is achieved. Further, fitting the quick-coupling by control from the cabin, the conical shape of pin and sleeve remarkably helps to make the protruding pins to hit the working machine sleeves.
  • Fig. 1 is a section of the hydraulic quick-mounting assembly with bearings and scoop counter parts.
  • Fig. 2 is a section of another embodiment of the hydraulic quick-mounting assembly fastened with bearings.
  • Figure 1 shows an assembly for attachment to the top of an excavator boom and having a tube 1 as its body.
  • pins 6 hydraulically movable in and out.
  • Pins 6 are sleeves, as hydraulic cylinders, whereby they slide on the piston rod that supports them from the inside.
  • Pressure oil is conducted along channels 7 to move pins 6 in and out by means of piston 11 and, on the other hand, to keep the pins tense as long as the attachment by pins is retained.
  • a sleeve 2 welded to the scoop, pressed in its hole there is an inner sleeve 5 with conical surface, whose rotation in the sleeve is also prevented using, for instance, the attachment and screws 4 of the shielding plate that covers the sleeve rear portion.
  • the attachment can be made free of backlash and rotating the scoop to rotate pins 6, whereby they rotate in respective bearings 10 and in body 1.
  • Figure 2 is the same solution on the tool side as in figure 1, but inside body 1 the fastening with bearings is changed to a conical roller bearing 14,15. Also a small portion of roller bearing 13 is for pin 6, as well as nipple 8. Conical roller bearing 14,15 takes the ejection of pin 6 and stops the axial movement of pin 6.
  • Conical roller bearing 14,15 takes the ejection of pin 6 and stops the axial movement of pin 6.
  • Pins 6 are sleeves, where the other end is plugged by a screw plug.
  • this pin 6 end there can also be groove or a bulge or a cavity and respectively there is, for instance, in the not- rotation shield plate 3 of sleeve 2 a corresponding shape, whereby when the pin protrudes out of the body the said shapes come in contact preventing pin 6 from rotating in regard to sleeve 2 and sleeve 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

A quick-coupling assembly for attachment of a tool to a working machine, whereat there is in the tool at least one pair of fixing sleeves (2) for mounting into them pins that fasten the tool and working machine together and each pair of sleeves has a counter pair of fulcrum pins fixed to the working machine and formed of two pins (6) mounted facing each other and most suitably inside the tubular body (1) and movable by hydraulic pressure lengthwise out of body and back into body. Both pins are fastened with bearings to rotate in regard to the body at least with the pins in ejected position and the assembly includes a blocking system to prevent pin rotation in regard to sleeve pair (2).

Description

QUICK-COUPLING ASSEMBLY
The invention relates to a quick-coupling assembly presented in the preamble of patent claim 1.
Previously known is a quick-coupling assembly for attachment of scoops, bulldozer blades or other tools to a working machine e.g. from publication WO 95/21969. In the publication a connecting piece adapted to the working machine boom top is presented, which has a cylindrical body and where out of the body ends pins protrude by means of hydraulic pressure. The pins are retractred also by pressure. At least one of the protruding pins is the cylinder of the hydraulic cylinder, by means of which the pin movements are produced.
The advantage of the solution is that the outer surfaces of the protruding pins are not faces that can be tightened against hydraulic pressure, so that possible damages in the long run are of no importance for the function. However, the disadvantage of this solution is that the protruding pin strives to rotate and usually even always rotates in the sleeve of the tool, for instance a the scoop, when the scoop is rotated.
So, if the scoop sleeve is used as a bearing, almost unshielded so that dirt an stones can get onto the sliding surface, the fit of pin and sleeve will soon become loose. A loose fit causes bending forces in the pin and the quick-contact assembly will not be reliable any more.
By means of the quick-contact assembly as per this invention these disadvantages are resolved and the invention is characterized in what is presented in the enclosed patent claims.
The advantages of this invention are that the protruding pin does not rotate in the tool sleeve, since fastening with bearings is arranged within the assembly, where necessary bearings can be placed into protected space. The aim has been to prevent the pin to rotate anymore in the sleeve. The pins are pressed by hydraulic power all the time in protruded state. In this way the pin joint is stiffened especially if the pin is made sligtly conical and, correspondingly, the sleeve of the tool a cone. The tool is then free from backlash, but by means of the rotating pin attached to boom of the working machine. Sufficient support against bending and other forces is achieved. Further, fitting the quick-coupling by control from the cabin, the conical shape of pin and sleeve remarkably helps to make the protruding pins to hit the working machine sleeves.
In the following the invention is disclosed with reference to the enclosed drawing, where
Fig. 1 is a section of the hydraulic quick-mounting assembly with bearings and scoop counter parts. Fig. 2 is a section of another embodiment of the hydraulic quick-mounting assembly fastened with bearings.
Figure 1 shows an assembly for attachment to the top of an excavator boom and having a tube 1 as its body. Within the body there are pins 6 hydraulically movable in and out. Pins 6 are sleeves, as hydraulic cylinders, whereby they slide on the piston rod that supports them from the inside. Pressure oil is conducted along channels 7 to move pins 6 in and out by means of piston 11 and, on the other hand, to keep the pins tense as long as the attachment by pins is retained.
On the tool side there is , for instance, a sleeve 2 welded to the scoop, pressed in its hole there is an inner sleeve 5 with conical surface, whose rotation in the sleeve is also prevented using, for instance, the attachment and screws 4 of the shielding plate that covers the sleeve rear portion.
Within body 1 is the fastening with bearings 10 for pins 6 when protruded. Lubrication is arranged over nipples 8 and retaining bearing sleeves 10 secured by locking screws 9.
Wedging out pins 6 by the power of hydraulic pressure and the sleeves 5 restricting the ejection of pins, the attachment can be made free of backlash and rotating the scoop to rotate pins 6, whereby they rotate in respective bearings 10 and in body 1.
Figure 2 is the same solution on the tool side as in figure 1, but inside body 1 the fastening with bearings is changed to a conical roller bearing 14,15. Also a small portion of roller bearing 13 is for pin 6, as well as nipple 8. Conical roller bearing 14,15 takes the ejection of pin 6 and stops the axial movement of pin 6. One strives to produce a construction, where the cone joint between pin 6 and sleeve 5 would also stop the movement of pin 6 si ultan-eously with the roller bearing. By this arrangement the quick-contact would also become free of backlash and the pins well supported against bending and the pins would not rotate in their box in body 1 in loading situation. The position of conical sleeve can be adjusted by fitting regulator plates in top of sleeve 5 and the sleeve forced against body 1 by tightening screws 4.
Pins 6 are sleeves, where the other end is plugged by a screw plug. In this pin 6 end there can also be groove or a bulge or a cavity and respectively there is, for instance, in the not- rotation shield plate 3 of sleeve 2 a corresponding shape, whereby when the pin protrudes out of the body the said shapes come in contact preventing pin 6 from rotating in regard to sleeve 2 and sleeve 5.
On the other hand also the ejection power retained all the time pushes the pin by such force against sleeve 5 conical face that there is sufficient friction to prevent the pin from rotating. Between body 1 and pin 6 it is possible to use even other known ways of fastening the bearings.

Claims

CLAIMS 4
l.A quick-coupling assembly for attachment of a tool to a working machine, whereby there is in the tool at least one pair of fixing sleeves (2) for mounting into them pins that fasten the tool and working machine together and each pair of sleeves has a counter pair of fulcrum pins fixed to the working machine and formed of two pins (6) mounted facing each other and most suitably inside the tubular body 1 and movable by hydraulic pressure lengthwise out of body (1) and back into body (1), c h a r a c t e r i z e d in that both pins (6) are fastened with bearings to rotate in regard to body (1) at least with pins (6) in ejected position and the assembly having a blocking system to prevent pin (6) rotation in regard to sleeve (2).
2. A quick-coupling assembly according to claim 1 c h a r a c t e r i z e d in that the counter face of both pin (6) and sleeve (2) is a cone.
3. A quick-coupling assembly according to claim 1 or 2 c h a r a c t e r i z e d in that the assembly includes an arrangement for retaining the effect of power caused on pins (6) while these pins (6) are ejected.
4. A quick-coupling assembly according to any of the above claims 1 - 3 c h a r a c t e r i z e d in that in the assembly the inner cone face of sleeve (2) works a restrictor of pin (6) ejection.
5. A quick-coupling assembly according to any of the above claims 1 - 3 c h a r a c t e r i z e d in that fastening of pin (6) with bearings (14,15) works a restrictor of pin (6) ejection.
6. A quick-coupling assembly according to any of the above claims 1 - 5 c h a r a c t e r i z e d in that in order to prevent pin rotation in sleeve (2) the assembly includes a system to retain power that pushes pin (6) against the cone face of the sleeve.
7. A quick-coupling assembly according to any of the above claims 1 - 3 c h a r a c t e r i z e d in that rotation of pin (6) inside sleeve (2) is prevented by a groove, a bulge or correspond-ing shaped in pin (6) which shape has a non-rotating counter face in the rear portion of sleeve (2), e.g. in shielding plate (3) . assembly includes a system to maintain power pushing the pin (6) against the cone face of the sleeve.
PCT/FI2000/000128 1999-02-19 2000-02-21 Quick-coupling assembly WO2000049233A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU28073/00A AU2807300A (en) 1999-02-19 2000-02-21 Quick-coupling assembly
KR1020017010555A KR20010104344A (en) 1999-02-19 2000-02-21 Quick-coupling assembly
JP2000599950A JP2002537504A (en) 1999-02-19 2000-02-21 Quick fitting assembly
EP00906387A EP1177350A1 (en) 1999-02-19 2000-02-21 Quick-coupling assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990364 1999-02-19
FI990364A FI108665B (en) 1999-02-19 1999-02-19 Quick Coupling Arrangements

Publications (1)

Publication Number Publication Date
WO2000049233A1 true WO2000049233A1 (en) 2000-08-24

Family

ID=8553873

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2000/000128 WO2000049233A1 (en) 1999-02-19 2000-02-21 Quick-coupling assembly

Country Status (6)

Country Link
EP (1) EP1177350A1 (en)
JP (1) JP2002537504A (en)
KR (1) KR20010104344A (en)
AU (1) AU2807300A (en)
FI (1) FI108665B (en)
WO (1) WO2000049233A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002059426A1 (en) * 2001-01-23 2002-08-01 Nagler Juergen Coupling of working machinery in particular to hydraulic excavators
EP1258567A1 (en) * 2001-05-18 2002-11-20 Korea Institute Of Machinery & Materials Quick coupler for excavator
WO2004092489A1 (en) * 2003-04-16 2004-10-28 Volvo Construction Equipment Holding Sweden Ab Working machine comprising an implement coupling and an implement locking element
NL2007954C2 (en) * 2011-12-12 2013-06-13 Rusch B V A coupling for coupling first and second machine members together, machine assembly and method of assembly thereof.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20080652A0 (en) 2008-12-11 2008-12-11 Yrjoe Raunisto Quick Coupling Arrangements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589780A (en) * 1969-05-13 1971-06-29 Gkn Engineering Ltd Bearings
NL7900631A (en) * 1979-01-26 1980-07-29 Interparts B V Hydraulic crane retainer fixture to scoop - comprises pin and hook swivel arrangement also pressure cylinder with end pins to fit in spaced lugs
EP0615023A1 (en) * 1993-03-10 1994-09-14 Jean-Marie Gérard René Koehl Device for rotably assembling an arm or similar to two branches of a fork formed element
US5546683A (en) * 1993-09-29 1996-08-20 Clark; George J. Bucket attachment device with remote controlled retractable pins
US5802753A (en) * 1994-02-09 1998-09-08 Raunisto; Yrjoe Quick coupling assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589780A (en) * 1969-05-13 1971-06-29 Gkn Engineering Ltd Bearings
NL7900631A (en) * 1979-01-26 1980-07-29 Interparts B V Hydraulic crane retainer fixture to scoop - comprises pin and hook swivel arrangement also pressure cylinder with end pins to fit in spaced lugs
EP0615023A1 (en) * 1993-03-10 1994-09-14 Jean-Marie Gérard René Koehl Device for rotably assembling an arm or similar to two branches of a fork formed element
US5546683A (en) * 1993-09-29 1996-08-20 Clark; George J. Bucket attachment device with remote controlled retractable pins
US5802753A (en) * 1994-02-09 1998-09-08 Raunisto; Yrjoe Quick coupling assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002059426A1 (en) * 2001-01-23 2002-08-01 Nagler Juergen Coupling of working machinery in particular to hydraulic excavators
EP1258567A1 (en) * 2001-05-18 2002-11-20 Korea Institute Of Machinery & Materials Quick coupler for excavator
WO2004092489A1 (en) * 2003-04-16 2004-10-28 Volvo Construction Equipment Holding Sweden Ab Working machine comprising an implement coupling and an implement locking element
AU2004230740B2 (en) * 2003-04-16 2007-06-07 Volvo Construction Equipment Ab Working machine comprising an implement coupling and an implement locking element
US7275909B2 (en) 2003-04-16 2007-10-02 Volvo Construction Equipment Holding Sweden Ab Working machine comprising an implement coupling and an implement locking element
KR101231699B1 (en) * 2003-04-16 2013-02-12 볼보 컨스트럭션 이큅먼트 에이비 Working machine comprising an implement coupling, and an implement locking element
NL2007954C2 (en) * 2011-12-12 2013-06-13 Rusch B V A coupling for coupling first and second machine members together, machine assembly and method of assembly thereof.

Also Published As

Publication number Publication date
FI990364A0 (en) 1999-02-19
EP1177350A1 (en) 2002-02-06
FI990364A (en) 2000-08-20
FI108665B (en) 2002-02-28
AU2807300A (en) 2000-09-04
KR20010104344A (en) 2001-11-24
JP2002537504A (en) 2002-11-05

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