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WO1993005245A1 - Mecanisme de retenue d'un ensemble dent - Google Patents

Mecanisme de retenue d'un ensemble dent Download PDF

Info

Publication number
WO1993005245A1
WO1993005245A1 PCT/US1992/005281 US9205281W WO9305245A1 WO 1993005245 A1 WO1993005245 A1 WO 1993005245A1 US 9205281 W US9205281 W US 9205281W WO 9305245 A1 WO9305245 A1 WO 9305245A1
Authority
WO
WIPO (PCT)
Prior art keywords
pin
conical spring
retaining mechanism
spring washer
diameter
Prior art date
Application number
PCT/US1992/005281
Other languages
English (en)
Inventor
James A. Garman
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.
Priority to AU22687/92A priority Critical patent/AU648008B2/en
Priority to GB9304922A priority patent/GB2264133B/en
Publication of WO1993005245A1 publication Critical patent/WO1993005245A1/fr

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

Definitions

  • This invention relates generally to a tooth assembly and more particularly to a retaining mechanism for the tooth assembly.
  • retaining mechanisms are used to retain, for example, a tooth to an adapter.
  • a retaining mechanism When using a retaining mechanism to retain the tooth to the adapter, it is desirable to be able to readily install the retaining mechanism and have the retaining mechanism remain in its assembled position without inadvertently coming apart during use.
  • a retaining mechanism allows the tooth to separate from the adapter, the tooth may accidentally be loaded with the materials being worked and cause damage to the equipment that is subsequently processing the material being worked.
  • U.S. Patent No. 3,959,901 which issued June 1, 1976 to G. R. Klett.
  • This arrangement teaches a pin that is inserted through corresponding holes of a tooth and adapter and a split spring washer that is inserted in a counterbored hole in the adapter and the pin is forced to slide through the split spring washer.
  • the clamping force of the split spring washer on the pin maintains the pin in its assembled position.
  • the force.necessary to install the pin is generally equal to or greater than the force required to disassemble the retaining mechanism.
  • the retaining force is only as strong as the clamping force exerted by the split spring washer.
  • the present invention is directed to overcoming one or more of the problems as set forth above.
  • a retaining mechanism is provided and adapted for use in securing a ground engaging tool to a work implement.
  • the ground engaging tool has a rearward end portion defining a socket and first and second openings defined in the end portion on opposite sides of the socket.
  • the work implement has a nose portion adapted to mate with the socket and defines a cross passage that registers, when assembled, with the aligned openings of the ground engaging tool.
  • An annular recess having a bottom surface is defined in the nose portion or one side of the rearward end portion and is concentric with the cross passage or the aligned openings.
  • the retaining mechanism includes a conical spring washer defining an opening having a predetermined diameter and being adapted, when assembled, to be located in the annular recess and a pin adapted, when assembled, to be located in the aligned openings, the cross passage, and the opening of the conical spring washer.
  • the conical spring washer has a concave side, a convex side, and an inner surface.
  • the pin has a predetermined diameter and includes means for forming a shoulder thereon. When assembled, the shoulder means is disposed in the annular recess adjacent the convex side of the conical spring washer.
  • a tooth assembly in another aspect of the present invention, includes a ground engaging tool, a work implement, and a retaining mechanism.
  • the ground engaging tool has a rearward end portion defining a socket and first and second aligned openings defined therein on opposite sides of the socket.
  • the work implement has a nose portion that is operative to mate with the socket of the ground engaging tool.
  • a cross passage is defined in the nose portion and is generally in axial alignment with the aligned openings.
  • An annular recess is defined in one side of the nose portion and is concentric with the cross passage.
  • the retaining mechanism includes a conical spring washer having a concave side, a convex side, an outer peripheral edge on the convex side, and an inner surface defining an opening of a predetermined diameter, and a pin having a predetermined diameter.
  • the pin includes means for forming a shoulder thereon.
  • the conical spring washer is located in the annular recess and the pin is disposed in the aligned openings, the cross passage, and the conical spring washer.
  • the shoulder means is located adjacent the convex side of the conical spring washer.
  • the present invention provides a retaining mechanism that can be readily assembled with a predetermined force and has a retaining force that is normally higher than the assembly force. This ensures that the pin is positively held in place during use and still allows disassembly by applying a higher force thereto than that required to assemble the retaining mechanism.
  • Fig. 1 is an isometric representation of a retaining mechanism for a tooth assembly incorporating an embodiment of the present invention
  • Fig. 2 is a partial cross-sectional view taken from Fig. 1 with the components of Fig. 1 being assembled;
  • Fig. 3 is an enlarged partial cross-sectional view of the retaining mechanism of Fig. 2;
  • Fig. 4 is a partial sectional view similar to Fig. 3 but representing another embodiment of the present invention
  • Fig. 5 is a partial cross-sectional view similar to Fig. 3 above but representing another embodiment of the present invention
  • Fig. 6 is a partial cross-sectional view similar to Fig. 3 above but representing another embodiment of the present invention.
  • Fig. 7 is a partial cross-sectional view similar to Fig. 3 above but representing another embodiment of the present invention.
  • the tooth assembly 10 includes a work element 12, a ground engaging tool 14, and a retaining mechanism 16.
  • the work implement 12 includes a nose portion 18 defining a cross passage 20 therein.
  • An annular recess 22 having a bottom surface 24 is defined in the nose portion 18 and concentric with the cross passage 20.
  • the ground engaging tool 14 has a rearward end portion 28 operative to snugly mate with the nose portion 18 of the work implement 12.
  • a socket 30 is defined in the rearward end portion 28 and first and second aligned openings 32,34 are defined in the rearward end portion 28 with the aligned openings 32,34 being on opposite sides of the socket 30.
  • the retaining mechanism 16 includes a pin 40 having a predetermined diameter and first, second, and third conical spring washers 42,44,46.
  • the first conical spring washer has a concave side 48, a convex side 50, an inner surface 52 defining a opening 53 having a predetermined diameter and an outer peripheral edge 54 on the convex side 50 thereof.
  • the second and third conical spring washers 44,46 are substantially identical to the first conical spring washer 42. Therefore, element numbers relating to features of the first conical spring washer 42 are the same for the second and third conical spring washers 44, 46.
  • each of the conical spring washers 42,44,46 is located in the annular recess 22 of the nose portion 18 and each has its convex side 50 facing towards the bottom surface 24 of the annular recess 22.
  • the pin 40 has a longitudinal axis 58 and includes means 60 for forming a shoulder thereon.
  • a irst portion 62 of the pin having the predetermined diameter defines a groove 64 in the circumference thereof generally adjacent one end thereof.
  • a plurality of individual adjacent ridges 66 are located generally in the bottom of the groove 64 and the respective ridges 66 are angled relative to the longitudinal axis 58 thereof to form the respective shoulders 68.
  • the outer diameter of the respective shoulders 68 is greater than diameter of the opening 53 defined by the inner surface 52 of each of the first, second, and third conical spring washers 42,44,46.
  • a second portion 70 of the pin 40 has a diameter smaller than the opening 53 of the first.
  • second, and third conical spring washer 42,44,46 and is operative, when assembled, to be disposed in the cross passage 20 and the second aligned opening 34.
  • the first portion 62 of the pin 40 when assembled, is located in the first aligned opening 32 and the annular recess 22.
  • the diameter of the cross passage 20 is smaller than the diameter of the first portion 62 of the pin 40.
  • a means 74 for supporting the first conical spring washer 42 is provided and located in the annular recess 22 of the nose portion 18.
  • the supporting means 74 includes a hollow support member 76.
  • the hollow support member 76 has a longitudinal axis 78 which is generally parallel to the longitudinal axis 58 of the pin 40.
  • a first surface 80 is provided on the support member 76 and is perpendicular to the longitudinal axis 78.
  • a second surface 82 is provided on the hollow support member 76 and is angled with respect to the longitudinal axis 78 at generally a 45 degree angle.
  • the hollow support member 76 is located in the annular recess 22 with the first surface 80 of the hollow support member 76 being in contact with the bottom surface 24 of the annular recess 22. During assembly, the angled second surface 82 is engaged by and supports the outer peripheral edge 54 of the first conical spring washer 42.
  • FIG. 4 another embodiment of the subject invention is illustrated.
  • the embodiment of Fig. 4 is substantially the same as the embodiment of Fig. 3 and like elements have the same reference numerals.
  • the groove 64 of Fig. 4 has a diameter that is smaller than the diameter of the opening 53 of the first, second, and third conical spring washers 42,44,46.
  • the width of the groove 64 is sufficient to receive the first, second, and third conical spring washers 42,44,46.
  • the shoulder 68 in the subject embodiment is formed by one side of the groove 64.
  • the outer diameter of the shoulder 68 is the same as the predetermined diameter of the first portion 62 of the pin 40.
  • the remainder of the embodiment of Fig. 4 is the same as that illustrated in Figs. 1-3.
  • FIG. 5 another embodiment of the present invention is illustrated.
  • the first portion 62 and the second portion 70 of the pin 40 are both of the same size and both have the same predetermined diameter.
  • the groove 64 of the subject embodiment are the same as that set forth in Fig. 4.
  • the shoulder 68 is formed in the same manner as the shoulder 68 of Fig. 4.
  • the cross passage 20 and the second aligned opening 34 are increased in size to be generally the same as the first aligned opening 32.
  • the remaining components are the same as those set forth in the previous embodiments.
  • the pin 40 of Fig. 6 is an offset pin. More specifically, a second longitudinal axis 86 is defined in the second portion 70 and is offset from the longitudinal axis 58 of the first portion 62. The longitudinal axis 86 is parallel with the longitudinal axis 58. The degree of offset between the first longitudinal axis 58 of the first portion 62 and the second longitudinal axis 86 of the second portion 70 is sufficient to insure that the first and second portions 62,70 are in a common plane along a portion of the respective circumferences thereof.
  • the cross passage 20 and the second aligned opening 34 are smaller in cross-section than the first portion 62.
  • the first aligned opening 32 is larger than the first portion 62.
  • the groove 64 is the same as that previously set forth with respect to Figs. 4 and 5 and the shoulder 68 is formed in the same manner.
  • Fig. 7 another embodiment of the subject invention is illustrated.
  • the pin 40 has an enlarged portion 88 thereof having a diameter larger than the predetermined diameter of the pin 40.
  • the enlarged portion 88 is located generally adjacent one end of the pin 40 thereof.
  • the shoulder 68 is formed by the intersection of the enlarged portion 88 and the surface of the first portion 62 of the pin 40.
  • the enlarged portion 88 of the pin 40 when assembled, is located in the annular recess 22 between the cross passage 20 and the first conical spring washer 42.
  • the cross passage 20 has a diameter smaller than the diameter of the first aligned opening 32 and the outer diameter of the enlarged portion 88 is smaller than the diameter of the first aligned opening 32.
  • the means 74 for supporting the first conical spring washer 42 during assembly is integrally formed in the annular recess 22.
  • An angled surface 90 is formed in the bottom portion of the annular recess 22 adjacent the bottom surface 24 and at an angle of generally 45 degrees therewith.
  • One aspect of the present invention provides a tooth assembly 10 wherein the retaining mechanism 16 can be easily installed with a lower force while a larger force is necessary to disassemble the retaining mechanism.
  • the outer diameter of the shoulder 68 in each of the above-noted embodiments is two to five percent greater than the diameter of the opening 53 of the respective first, second, and third conical spring washers 42,44,46.
  • the outer diameter of the respective shoulders 68 is three to four percent greater than the diameter of the opening 53.
  • the hollow support member 76 is placed in the annular recess 22 with the first surface 80 thereof being placed in abutment with the bottom surface 24 of the annular recess 20.
  • the first, second, and third conical spring washers 42,44,46 are then placed in the annular recess adjacent the hollow support member 76.
  • Each of the first, second, and third conical spring washers 42,44,46 are placed adjacent each other with the convex side of each facing towards the hollow support member 76.
  • the socket 30 of the ground engaging tool 14 is slipped over the nose portion 18 until the first and second aligned openings 32,34 are in alignment with the cross passage 20 and the annular recess 22.
  • the second portion 70 of the pin 40 is inserted into the first aligned passage 32 through the first, second, and third conical spring washers 42,44,46 and into the cross passage 20 until the larger first portion 62 of the pin 40 contacts the concave side 48 of the third conical spring washer 46.
  • An external force is applied to the exposed end of the first portion 62 of the pin 40 forcing each of the first, second, and third conical spring washers 42,44,46 to flex. Since the outer peripheral edge 54 of the first conical spring washer 42 is in contact with the angled second surface 82 of the hollow support member 76 and the external force is being transmitted to the concave side 48 of the third conical washer 46, the first, second, and third conical spring washers 42,44,46 are forced to flex..
  • the flexing of the respective first, second, and third conical spring washers 42,44,46 results in a shape that is more convex. Simultaneously with the flexing of the first, second. and third conical spring washers 42,44,46, the diameter of the respective openings 53 thereof is enlarged allowing the inner surface 52 to slip over the respective shoulders 68 of the plurality of ridges 66.
  • the external force is continuously applied to the pin 40 until the inner surface 52 of each of the first, second, and third conical spring washers 42,44,46 is located in abutment with the respective angled ridges 66 of the groove 64. At this point, the pin 40 is fully assembled and the second portion 70 has extended into the second aligned opening 34.
  • the first, second, and third conical spring washers 42,44,46 attempt to return to their original shape.
  • the inner surface 52 of each of the first, second, and third conical spring washers 42,44,46 are tightly pressed against the respective ridges 66 thereof.
  • the diameter of the angled ridges 66 could be such that the first, second, and third conical spring washers 42,44,46 could return to their original shape and not be tightly pressed against the ridges 66 without departing from the essence of the invention.
  • the first portion 62 of the pin 40 has a diameter greater than the diameter of the cross passage 20, the first portion 70 of the pin 40 cannot be forced through the tooth assembly 10 in a direction from the first aligned passage 32 towards the second aligned passage 34. Consequently, the only way that the pin 40 can be removed from the tooth assembly 10 is in the direction from the second aligned opening 34 towards the first aligned opening 32.
  • the pin 40 attempts to move in a direction from the second aligned opening 34 towards the first aligned opening 32, the third conical spring washer 46 contacts the inside wall of the socket 30 of the ground engaging tool 14. Further attempts of movement in this direction results in the first, second, and third conical spring washers 42,44,46 being forced to change towards a shape that is flat. As the first, second, and third conical spring washers 42,44,46 are being flattened, the diameter of the inner surface 52 attempts to become smaller. As the diameter of the inner surface 52 is attempting to become smaller, a greater compressive force is applied to the respective angled ridges 66 thus further inhibiting the inner surface 52 from slipping over the respective shoulders 68. The subject arrangement can withstand a very high force without inadvertently becoming disassembled.
  • a force is applied to the end of the second portion 70 of the pin 40 adjacent the second aligned opening 34 to move the pin 40 in a direction from the second aligned opening 34 towards the first aligned opening 32.
  • This external force must be sufficiently high to force the diameter of the openings 53 to expand in order for the inner surfaces 52 to slip over the shoulders 68 thereof.
  • the assembly of the hollow support member 76 and the first, second, and third conical spring washers 42,44,46 into the annular recess 22 and the subsequent mounting of the ground engaging tool 14 onto the nose portion 18 is the same as that set forth above with respect to Figs. 1-3.
  • the second portion 70 of the pin 40 of the subject embodiment is inserted into the first aligned opening 32 through the first, second, and third conical spring washers 42,44,46 and into the cross passage 20 until the larger first portion 62 thereof contacts the third conical spring washer 46 adjacent the inner surface 52 thereof.
  • an external force is applied to the end of the first portion 62 of the pin 40 forcing it in a direction towards the second aligned opening 34.
  • the diameter of the inner surface 52 is being forced to expand to a larger diameter in order to slip over the predetermined diameter of the pin 40.
  • the predetermined diameter of the pin 40 is the outer diameter of the shoulder 68.
  • the pin 40 is continually forced in the direction towards the second aligned opening 34 until the inner surface 52 of each of the first, second, and third conical spring washers 42,44,46 is located in the groove 64.
  • the first, second, and third conical spring washers 42,44,46 are caused to flex as a result of the outer peripheral edge 54 of the first conical spring washer 42 being in contact with the angled second surface 82 of the hollow support member 76.
  • This flexing of the first, second, and third conical spring washers 42,44,46 aid in the diameter of the openings 53 thereof expanding to a larger size.
  • the inner surfaces 52 of the first, second, and third conical spring washers 42,44,46 are located in the groove 64, they return to their initial shape.
  • the diameter of the openings 53 are larger than the diameter of the groove 64, thus the first, second, and third conical spring washers 42,44,46 are not under any type of load.
  • the pin 40 Since the diameter of the first portion 62 of the pin 40 is greater than the diameter of the cross passage 20 of the nose portion 18, the pin 40 cannot be removed in a direction extending from the first aligned opening 32 towards the second aligned opening 34. Any attempts of the pin 40 inadvertently becoming disassembled in the opposite direction is resisted when the concave side 48 of the third conical spring washer 46 contacts the inside surface of the socket 30 of the ground engaging tool 14. Since the first, second, and third conical spring washers 42,44,46 are progressively flattened during any further movement towards disassembly of the pin 40 and the diameter of the inner surface 52 becomes smaller as a result thereof, the subject arrangement can withstand high forces resisting any attempt of inadvertent disassembly.
  • an external force is applied to the end of the second portion 70 of the pin 40 located adjacent the second aligned opening 34 moving the pin 40 in a direction from the second aligned opening 34 towards the first aligned opening 32.
  • the force must be sufficiently high in order to force the diameter of the openings 53 of the respective first, second, and third conical spring washers 42,44,46 to expand so that the respective inner surfaces 52 can slip over the shoulder 68.
  • the assembly of the hollow support member 76, the first, second, and third conical spring washers 42,44,46, and the ground engaging tool 14 are the same as set forth in the previous embodiments.
  • the first portion 62 and the second portion 70 of the pin 40 have the same diameter which is the same as the predetermined diameter of the pin 40.
  • the second portion 70 of the pin 40 is inserted into the first aligned opening 32 until the end of the second portion 70 of the pin 40 contacts the third conical spring washer 46 adjacent the inner surface 52 thereof.
  • any movement of the pin 40 in a direction from the second aligned opening 34 towards the first aligned opening 32 is resisted by the contact of the third conical spring washer 46 against the inside wall of the socket 30 of the ground engaging tool 14.
  • the pin 40 can move in a direction from the first aligned opening 32 towards the second aligned opening 34. Consequently, a force equal to the assembly force can be applied to remove the pin 40 in a direction towards the second aligned opening 34. Once the pin 40 is fully removed from the first, second, and third conical spring washers 42,44,46, the pin may be easily pulled from the assembly.
  • the second portion 70 of the pin 40 is inserted through the first aligned opening 32, the first, second, and third conical spring washers 42,44,46 and into the cross passage 20 until the larger first portion 62 thereof contacts the third conical spring washer 46 adjacent the inner surface 52 thereof.
  • the diameter of the openings 53 of the first, second, and third conical spring washers 42,44,46 are forced to expand in the same manner as set forth in the previous embodiments.
  • the external force is continually applied until the inner surfaces 52 of the first. second, and third spring washers 42,44,46 are located in the groove 64. Once the inner surfaces 52 are located in the groove 64, the conical spring washers 42,44,46 return to their fully relaxed condition as previously set forth in the above noted embodiments. Since the diameter of the first portion 62 of the pin 40 is greater than the diameter of the cross passage 20, the pin 40 cannot be disassembled in a direction from the first aligned opening 32 towards the second aligned opening 34.
  • the pin 40 is inserted into the first aligned opening 32 through the first, second, and third conical spring washers 42,44,46 and into the cross passage 20 until the enlarged portion 88 of the pin 40 contacts the concave surface 48 of the third conical spring washer 46 adjacent the inner surface 52 thereof.
  • An external force is applied to the end of the pin 40 forcing it in a direction towards the second aligned opening 34.
  • the first, second, and third conical spring washers 42,44,46 are forced to flex in the same manner as set forth in the previous embodiments. The only difference being that the outer peripheral edge 54 of the first conical spring washer 42 is in contact with the angled surface 90 as opposed to the angled surface 82 of the hollow support member 76.
  • each of the first, second, and third conical spring washers 42,44,46 return to their relaxed condition. Since the enlarged portion 88 of the pin 40 has a diameter greater than the diameter of the cross passage 20, the pin 40 cannot be removed in a direction towards the second aligned opening 34. Any attempts, during use, of the pin 40 trying to inadvertently come out in a direction from the second aligned opening 34 towards the first aligned opening 32 is resisted once the concave surface 48 of the third conical spring washer 46 contacts the inner surface of the socket 30 of the ground engaging tool 14.
  • a force is applied to the pin 40 at a location adjacent the second aligned opening 34 forcing the pin 40 in a direction towards the first aligned opening 32.
  • the high force is applied in order to force the diameter of the openings 53 of the first, second, and third conical spring washers 42,44,46, to expand to a size sufficient for the respective inner surfaces 52 to slip over the outer diameter of the shoulder 68.
  • the respective pins 40 are made from an SAE 4140 material heat treated to a hardness of Rockwell "C" 40-44.
  • This material has a yield strength in the range of 1,120 to 1,290 MPa (162,000-187,000 psi) , and a modulus of elasticity of 200,000 MPa (29,000,000 psi).
  • the first, second, and third conical spring washers 42,44,46 are made from a spring steel material having a carbon content in the range of .55-1.05 and is heat treated to a hardness of Rockwell "C" 48-52.
  • This material has a yield strength in the range of 1,470 MPa - 1,690 MPa (213,000-246,000 psi) and a modulus of elasticity approximately the same as the material of the pin 40.
  • the following set forth one example of the forces needed to assemble and disassemble at least one arrangement of the embodiments set forth above. The test of the example was conducted on the arrangement illustrated in Fig. 7.
  • the outer diameter of the enlarged portion 88 which is the same as the outer diameter of the shoulder 68 is 35 millimeters (1.377 inches) and the diameter of the openings 53 defined by the inner surfaces 52 of the first, second, and third conical spring washers 42,44,46 is 33.83 millimeters (1.332 inches).
  • the structure of the present invention provides a retaining mechanism 16 that can insure that, during use, the pin 40 is readily secured in its assembled position. Furthermore, the components can be assembled and disassembled without having to shear or fracture any of the components. It is recognized that in some instances the conical spring washers 42,44,46 may crack or fracture during disassembly thereof. Other aspects, objects, and advantages of this invention can be obtained from a study of the drawings, the disclosure, and the appended claims.

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  • 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)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Prosthetics (AREA)

Abstract

Des mécanismes de retenue sont normalement utilisés pour fixer une dent sur un adaptateur. Souvent, les forces nécessaires pour fixer le mécanisme de retenue en position assemblée ne sont pas suffisantes pour maintenir le montage pendant l'utilisation. Dans la présente invention, le mécanisme de retenue (16) comporte une cheville (40) dotée d'un dispositif (60) destiné à former un épaulement et une pluralité de rondelles élastiques coniques (42, 44, 46) ayant chacune une surface interne (52) qui définit une ouverture (53) ayant un diamètre d'une dimension prédéterminée, inférieure à celle du diamètre externe de l'épaulement (60). Lors du montage, l'épaulement (60) de la cheville (40) est poussé dans l'ouverture (53) des rondelles élastiques coniques respectives (42, 44, 46) depuis la face concave (48) desdites rondelles. Pour démonter la cheville (40), il faut faire passer l'épaulement (60) de la cheville (40) à travers les ouvertures respectives (53). Lorsque la cheville (40) doit être enlevée du côté où elle a été installée, il faut une force beacoup plus importante pour forcer l'épaulement (60) à passer à travers l'ouverture (53) des première, deuxième et troisième rondelles élastiques coniques respectives (42, 44, 46). Par conséquent, un mécanisme de retenue (16) doté d'une très forte résistance au démontage accidentel pendant l'utilisation est prévu.
PCT/US1992/005281 1991-09-10 1992-06-22 Mecanisme de retenue d'un ensemble dent WO1993005245A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU22687/92A AU648008B2 (en) 1991-09-10 1992-06-22 Retaining mechanism for a tooth assembly
GB9304922A GB2264133B (en) 1991-09-10 1992-06-22 Retaining mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75898791A 1991-09-10 1991-09-10
US758,987 1991-09-10

Publications (1)

Publication Number Publication Date
WO1993005245A1 true WO1993005245A1 (fr) 1993-03-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/005281 WO1993005245A1 (fr) 1991-09-10 1992-06-22 Mecanisme de retenue d'un ensemble dent

Country Status (6)

Country Link
AU (1) AU648008B2 (fr)
CA (1) CA2091445A1 (fr)
DE (1) DE4292960T1 (fr)
GB (1) GB2264133B (fr)
WO (1) WO1993005245A1 (fr)
ZA (1) ZA925010B (fr)

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US5926982A (en) * 1993-09-08 1999-07-27 Keech Castings Australia Pty. Limited Hydraulic fastening device and method
WO2013004858A1 (fr) * 2011-07-05 2013-01-10 Metalogenia, S.A. Dispositif de retenue, système de retenue entre une pièce femelle et une pièce mâle, et pièce femelle et mâle pour machines excavatrices et analogues

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CA2466768A1 (fr) * 2004-05-10 2004-10-22 Quality Steel Foundries Ltd. Dispositif de blocage pour outils dans le sol

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US3796464A (en) * 1972-09-27 1974-03-12 Carmet Co Resilient connection for mining pick and bushing
US4096653A (en) * 1974-10-31 1978-06-27 Caterpillar Tractor Co. Cartridge retaining means for earthworking tips
US4055223A (en) * 1975-03-31 1977-10-25 Caterpillar Tractor Co. Corner tooth assembly for an earthmoving implement having a hollow rearward portion
US4611418A (en) * 1985-03-28 1986-09-16 Launder Richard L Locking mechanism for earth excavation teeth
US4881331A (en) * 1985-04-03 1989-11-21 Gamma Lock (Proprietary) Limited Teeth for use with earth moving equipment
US4716668A (en) * 1985-10-24 1988-01-05 Esco Corporation Excavating tooth point for use with basket spring retainer
US4848013A (en) * 1988-10-24 1989-07-18 Caterpillar Inc. Two pin fastening assembly with interconnecting and retaining means
US4918843A (en) * 1989-02-21 1990-04-24 Caterpillar Inc. Ground engaging tool

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5926982A (en) * 1993-09-08 1999-07-27 Keech Castings Australia Pty. Limited Hydraulic fastening device and method
WO2013004858A1 (fr) * 2011-07-05 2013-01-10 Metalogenia, S.A. Dispositif de retenue, système de retenue entre une pièce femelle et une pièce mâle, et pièce femelle et mâle pour machines excavatrices et analogues
CN103781973A (zh) * 2011-07-05 2014-05-07 麦塔洛吉尼亚股份有限公司 保持装置、阴模部件和阳模部件之间的保持系统、以及用于挖掘机等的阴模部件和阳模部件
RU2569948C2 (ru) * 2011-07-05 2015-12-10 Металохения, С.А. Удерживающее приспособление, удерживающая система между охватывающей частью и охватываемой частью и охватывающая и охватываемая части для экскаваторов и подобных машин
US9512599B2 (en) 2011-07-05 2016-12-06 Metalogenia, S.A. Retention device for male and female components in excavator machines
CN103781973B (zh) * 2011-07-05 2017-10-24 麦塔洛吉尼亚股份有限公司 保持装置、阴模部件和阳模部件之间的保持系统、以及用于土方机械的阴模部件和阳模部件
US10106961B2 (en) 2011-07-05 2018-10-23 Metalogenia Patentes, S.L. Retention device for male and female components in excavator machines

Also Published As

Publication number Publication date
GB2264133B (en) 1995-03-29
DE4292960T1 (de) 1993-10-07
CA2091445A1 (fr) 1993-03-11
AU2268792A (en) 1993-04-05
GB9304922D0 (en) 1993-06-02
AU648008B2 (en) 1994-03-31
ZA925010B (en) 1993-08-03
GB2264133A (en) 1993-08-18

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