EP0343191A1 - Positive keeper means for pins of earthworking tips. - Google Patents

Positive keeper means for pins of earthworking tips.

Info

Publication number
EP0343191A1
EP0343191A1 EP19880902349 EP88902349A EP0343191A1 EP 0343191 A1 EP0343191 A1 EP 0343191A1 EP 19880902349 EP19880902349 EP 19880902349 EP 88902349 A EP88902349 A EP 88902349A EP 0343191 A1 EP0343191 A1 EP 0343191A1
Authority
EP
European Patent Office
Prior art keywords
retaining ring
washer
pin
groove
radial thickness
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP19880902349
Other languages
German (de)
French (fr)
Other versions
EP0343191B1 (en
Inventor
Mark Steven Diekevers
Jerry Dale Fidler
Brian D Jensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Publication of EP0343191A1 publication Critical patent/EP0343191A1/en
Application granted granted Critical
Publication of EP0343191B1 publication Critical patent/EP0343191B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • E02F9/2841—Retaining means, e.g. pins resilient

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
  • Catching Or Destruction (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Dispositif de retenue d'une clavette comportant un ensemble de pièces pour maintenir sur leur fixation les pointes à travailler la terre. Il est extrêmement important, du point de vue opérationnel comme du point de vue économique, de bien maintenir sur leur fixation les pointes à travailler la terre au moyen de leurs clavettes de retenue pendant toute la durée du travail. En effet, quand ces pointes sont perdues, il faut les remplacer ou les réparer, ce qui non seulement fait perdre du temps mais se répercute sur la production. S'il faut, certes, bien maintenir ces pointes en place, celles-ci doivent cependant pouvoir être rapidement enlevées en vue de leur remplacement. Les pièces de retenue (44) de la clavette (17) viennent s'insérer dans un évidement (28) situé entre un bec (16) de la pièce de fixation (12) et une paroi latérale (36) de la pointe (14) et comportent une rondelle (46) glissée sur la clavette (17) et une bague de retenue élastique (68, 78), d'une épaisseur radiale prédéterminée, s'engageant dans une rainure (21) disposée sur la clavette (17) ainsi que dans une rainure de la rondelle (46) pour provoquer un verrouillage. L'une des rainures (21, 50) de la clavette (17) et de la rondelle ont une profondeur égale ou supérieure à l'épaisseur radiale prédéterminée de la bague de retenue (68, 78) et l'autre rainure (21, 50) a une profondeur suffisante pour empêcher que la bague (68, 78) fasse saillie hors de la rainure (21, 50) et que la largeur de la section transversale de la bague (68, 78), exposée au cisaillement, soit maximale. Pour enlever la clavette (18), on doit cisailler la bague (68, 78) on casser la rondelle (46).Device for retaining a key comprising a set of parts for holding the tines to work the earth on their fixing. It is extremely important, from the operational point of view as well as from the economic point of view, to properly hold the tines to work the soil with their retaining pins during their working time. When these tips are lost, they have to be replaced or repaired, which not only wastes time but has repercussions on production. While it is certainly necessary to keep these spikes in place, they must nevertheless be able to be quickly removed for replacement. The retaining pieces (44) of the key (17) are inserted into a recess (28) located between a spout (16) of the fixing piece (12) and a side wall (36) of the tip (14 ) and comprise a washer (46) slid over the key (17) and an elastic retaining ring (68, 78), of a predetermined radial thickness, engaging in a groove (21) disposed on the key (17) as well as in a groove in the washer (46) to cause locking. One of the grooves (21, 50) of the key (17) and of the washer have a depth equal to or greater than the predetermined radial thickness of the retaining ring (68, 78) and the other groove (21, 50) has a sufficient depth to prevent the ring (68, 78) from protruding from the groove (21, 50) and that the width of the cross section of the ring (68, 78), exposed to shear, is maximum . To remove the key (18), you must shear the ring (68, 78) or break the washer (46).

Description

FOR THE PURPOSES OF INFORMAHON ONLY
Codes used to identify States party to the PCT on the frontpages of pamphlets publishing international applications under the PCT.
AT Austria FR France ML Mali
Aϋ Australia GA Gabon MR Mauritania
BB Barbados GB United Kingdom MW Malawi
BE Belgium HU Hungary . NL Netherlands
BG Bulgaria IT Italy NO Norway
BJ Benin SP Japan RO Romania
BR Brazil KP Democratic People's Republic SD Sudan
CF Central African Republic ofKorea SE Sweden
CG Congo KR Republic ofKorea SN Senegal
CH Switzerland U Liechtenstein su Soviet Union
CM Cameroon LK Sri Lanka TD Chad
DE Germany, Federal Republic of LU Luxembourg TG Togo
DK Denmark MC Monaco US United States of America
El Finland MG Madagascar

Claims

Claims
1. A pin retainer assembly (15), comprising; a pin (17) having an outer peripheral surface (20) with an annular groove (21) defined in the outer peripheral surface (20); a washer (46) having an inner peripheral surface (47) with an annular groove (50) defined in the peripheral surface (20), said washer (46) being slideably disposed on the pin (17); and a resilient retaining ring (68/78) said retaining ring having a cross section with a predetermined radial thickness (D/E) and when assembled is disposed in locking engagement within the groove (21) on the pin (17) and the groove (50) in the washer (46), one of the grooves (21,50) in the pin and the sleeve has a depth equal to or greater than the predetermined radial thickness (D/E) of the retaining ring (68/78).
2. The pin retainer assembly (15), as set forth in claim 1, wherein said cross section of the retaining ring (68) is generally rectangular in cross section.
3. The pin retainer assembly (15), as set forth in claim 1, wherein the other one of the grooves (21,50) has a depth generally equal to one half of the predetermined radial thickness (D/E) of the retaining ring (68/78).
4. The pin retainer assembly (15), as set forth in claim 3, wherein said retaining ring (68/78) has a circular cross section.
5. The pin assembly (15), as set forth in claim 3, wherein the groove (21) in the pin has a depth equal to or greater than the predetermined radial thickness (D/E) of the retaining ring (68/78).
6. The pin retainer assembly (15), as set forth in claim 1, wherein the other of the grooves (21,50) has a depth sufficient to prevent camming of the ring (68/78) out of the groove (21,50).
7. The pin retainer assembly (15) as set forth in claim 6, wherein the retaining ring (68/78) is of a configuration sufficient to permit shearing of the retaining ring (68/78) or fracture of the washer (46) during disassembly thereof.
8. An earthworking device (10) comrpising: an adapter (12) having a nose (16) defining a transverse bore (22); an earthworking tip (14) telescopically mounted on the nose (16) of the adapter (12) and having a pair of spaced apart sidewalls (36,38) and a pair of laterally aligned holes. (39,40) defined by peripheral surfaces in the sidewalls, the bore and the holes being substantially axially aligned a recess (28) formed in one of the nose (16) or the earthworking tip (14) and in substantial axial alignment with the bore (22) and the holes (39, 40); a cylindrical pin (17) having a groove (21) and being slidably disposed in the bore (12) and the holes (39,40) for retaining the tip (14) on the adapter (12); and a keeper means (44) for securing the pin (17) in the bore (12) being located in the recess (28) for abutting contact with the nose (16) and one (36,38) of the sidewalls, the keeper means (44) including a metallic washer (46) having an inside surface (47) defining a bore (48) and a groove (50) opening into the bore (48), the bore (48) being axially alignable with the bore (22) in the nose (16) and a resilient retaining ring (68/78) having a cross-section of a predetermined radial thickness (D/E) captured in one (21/51) of the grooves in the pin (17) and the washer (46) and adapted to permit slidable insertion of the pin (17) in the bores
(22,48) and the holes (39,40) for locking engagement of the retaining ring (68/78) with the other (21/51) of the grooves, one (21/51) of the grooves in the pin (17) and the washer (46) has a depth equal to or greater than the predetermined radial thickness (D/E) of the retaining ring (68/78) and the other (21/51) of the grooves has a depth and configuration sufficient to prevent camming of the ring (68/78) out of the groove (21/51), and the retaining ring (68/78) and washer (46) being of a configuration sufficient to permit shearing of the retaining ring (68/78) or fracture of the washer (46) during disassembly.
9. The earthworking device (10) of claim 8 wherein the retaining ring (68) has a rectangular cross-section.
10. The earthworking device (10) of claim 9 wherein the groove (50) in the washer (46) has a pair of parallel sidewalls (56,58), the groove (21) of the pin (17) has a pair of parallel sidewalls (62,64) and the retaining ring (68) has a pair of parallel sidewalls (70,72) in engagement with the pair of sidewalls (56,58,62,64) of the groove (50) and the washer (46).
11. The earthworking device (10) of claim 8 wherein the depth of the groove (21) in the pin (18) is generally equal to one half of the predetermined radial thickness of the retaining ring (68) and the groove (50) in the washer (46) has a depth equal to or greater than the predetermined radial thickness of the retaining ring (68).
12. The earthworking device (10) of claim 8 wherein the recess (28) is formed in the nose (16).
13. The earthworking device (10) of claim 8 wherein the other one of the grooves (21,50) has a depth generally equal to one-half of the predetermined radial thickness of the retaining ring (68,78).
14. The earthworking device (10) of claim 13 wherein the retaining ring (78) has a circular cross-section.
15. The earthworking device (10) of claim 8 wherein the washer (46) has a frusto-conical outer side surface (54) disposed adjacent one of the pair of spaced apart sidewalls (36,38) of the earthworking tip (14).
EP19880902349 1987-01-20 1987-11-30 Positive keeper means for pins of earthworking tips Expired - Lifetime EP0343191B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US451587A 1987-01-20 1987-01-20
US451687A 1987-01-20 1987-01-20
US4515 1995-09-29
US4516 1995-09-29

Publications (2)

Publication Number Publication Date
EP0343191A1 true EP0343191A1 (en) 1989-11-29
EP0343191B1 EP0343191B1 (en) 1993-08-04

Family

ID=26673108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880902349 Expired - Lifetime EP0343191B1 (en) 1987-01-20 1987-11-30 Positive keeper means for pins of earthworking tips

Country Status (7)

Country Link
EP (1) EP0343191B1 (en)
JP (1) JP2614910B2 (en)
AU (1) AU605268B2 (en)
CA (1) CA1283939C (en)
DE (1) DE3786929T2 (en)
ES (1) ES2006269A6 (en)
WO (1) WO1988005483A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU694806B2 (en) * 1993-12-23 1998-07-30 Australian Soil Care Systems Pty. Ltd. Overload protection mechanism
JP4771623B2 (en) * 2001-07-17 2011-09-14 株式会社小松製作所 Tooth fixing structure for bucket for excavation
US9062436B2 (en) 2011-10-07 2015-06-23 Caterpillar Inc. Implement tooth assembly with tip and adapter
US8943717B2 (en) 2011-10-08 2015-02-03 Caterpillar Inc. Implement tooth assembly with tip and adapter
US9057177B2 (en) 2011-10-08 2015-06-16 Caterpillar Inc. Implement tooth assembly with tip and adapter
US8943716B2 (en) 2011-10-10 2015-02-03 Caterpillar Inc. Implement tooth assembly with tip and adapter
ITTO20130740A1 (en) * 2013-09-12 2015-03-13 Rialca Due Di Chiolerio Paolo Giova Nni DEVICE FOR FIXING TOOLS TO MACHINES BY PINS
US9670648B2 (en) 2015-08-10 2017-06-06 Caterpillar Inc. Replaceable tip systems for a tine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856359A (en) * 1971-09-20 1974-12-24 Cincinnati Mine Machinery Co Anti-coring device for use with bit mounting means on mining, earth working and digging machines
BR7502137A (en) * 1974-08-05 1976-08-03 Caterpillar Tractor Co PENETRATION DEVICE ON THE LAND AND MEANS OF RETENTION
US4096653A (en) * 1974-10-31 1978-06-27 Caterpillar Tractor Co. Cartridge retaining means for earthworking tips
FR2390618B1 (en) * 1977-05-12 1985-11-29 Lamouric Pol DEVICE FOR ROTATING A TOOL IN A TOOL HOLDER

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8805483A1 *

Also Published As

Publication number Publication date
EP0343191B1 (en) 1993-08-04
JP2614910B2 (en) 1997-05-28
WO1988005483A1 (en) 1988-07-28
CA1283939C (en) 1991-05-07
DE3786929T2 (en) 1994-03-10
DE3786929D1 (en) 1993-09-09
ES2006269A6 (en) 1989-04-16
AU1396488A (en) 1988-08-10
AU605268B2 (en) 1991-01-10
JPH02502033A (en) 1990-07-05

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