EP1411178A1 - Coupling system for the teeth of an excavator - Google Patents

Coupling system for the teeth of an excavator Download PDF

Info

Publication number
EP1411178A1
EP1411178A1 EP01972107A EP01972107A EP1411178A1 EP 1411178 A1 EP1411178 A1 EP 1411178A1 EP 01972107 A EP01972107 A EP 01972107A EP 01972107 A EP01972107 A EP 01972107A EP 1411178 A1 EP1411178 A1 EP 1411178A1
Authority
EP
European Patent Office
Prior art keywords
lugs
tooth member
rectilinear
end sections
straight section
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.)
Withdrawn
Application number
EP01972107A
Other languages
German (de)
English (en)
French (fr)
Inventor
Lluis Morales Laguarda
Nil Vallve I Bertran
Jorge Pallas Moreno
Fermin Sanchez Guisado
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.)
Metalogenia SA
Original Assignee
Metalogenia SA
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 Metalogenia SA filed Critical Metalogenia SA
Publication of EP1411178A1 publication Critical patent/EP1411178A1/en
Withdrawn legal-status Critical Current

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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
    • 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
    • E02F9/2858—Teeth characterised by shape
    • 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

Definitions

  • This invention relates to an engagement system for digger teeth, particularly for the teeth formed by the association of an adapter member, which is attached to the active edge of the bucket or shovel of the digger or the like, with a tooth member, which is engageable with said adapter member and can be retained therein by means of one or more pins.
  • the invention relates to the case in which one of the afore-mentioned adapter member and tooth member, preferably the tooth member, extends in the axial direction in two rectilinear lugs which, being noticeably parallel to one another, emerge cantilevered from the mouth of a central housing in the axial direction and complement respective rectilinear, open recesses arranged, also in the axial direction, on the adapter member, which, at the same time, is provided with an axial cantilever projection that complements said central housing in the tooth member, said tooth member lugs having their inner surface, which is in contact with the back of the adapter member recesses, as a flat or slightly arched curvilinear surface.
  • patent US 4.404.760 wherein the tooth member is provided with respective flat lugs which, having an inner step, bear against the sides of the adapter, in which no guiding or positioning recesses are provided, that has a grooving in part of its perimeter for inserting a fork that abuts against the inner step of the tooth member lugs in order to retain said member engaged in the adapter member; US 5.379.535, wherein the lugs of the tooth member and the corresponding recesses of the adapter member are inclined with respect to the axis of the engaged ensemble and the lugs have their inner face as a noticeably conical surface, with one of said lugs being provided with an internal recess for the insertion of a pin; US 5.386.653, wherein the tooth member lugs have their longitudinal edges inclined outwardly and their inner faces as
  • the tooth member lugs still tend to open or project from the adapter member recesses, but the inclined surfaces or the guiding arrangement keep them in place. In fact, the lugs are prevented from separating from the adapter, but a concentration of forces is created on the support surfaces of the lugs in the adapter member recesses, which lead to breakage.
  • the solution has been adopted to shape the tooth member lugs in a closed manner, that is, whereby they have a straight section that has a concave part facing the adapter member recesses, the backs of which are complementarily convex with respect to the afore-mentioned part.
  • the system which is the subject matter of this invention has been developed, according to which the straight section of each of the tooth member lugs, that is concave in one part and substantially complements the convex profile of the back of the adapter member recesses, has two end sections which meet in a convergent fashion in an intermediate section differentiated from the afore-mentioned sections.
  • One feature of the invention consists of the two end sections of the straight section of each tooth member lug, impinging on the intermediate section at an angle of between approximately 10° and 40°.
  • the invention comprises the fact that the differentiated intermediate section of the straight section of the tooth member lugs can have a curvilinear or rectilinear configuration, without excluding other composite configurations (mixed, fractioned, etc).
  • the invention comprises the fact that the end sections of the straight section of each lug can have a rectilinear or curvilinear configuration, without excluding other possibilities, including the cases where both end sections have the same or different configuration, the same or different length in any of the preceding cases, and an angle of incidence on the differentiated intermediate section, which is the same or different for the two end sections of one and the same straight section.
  • Another feature of the invention lies in the fact that the two lugs of one and the same tooth member can be specularly symmetrical or symmetrical with respect to one point.
  • a further feature of the invention lies in the fact that the tooth member lugs have diametrically opposite orifices which, being positioned in one of the end sections or in the differentiated intermediate section, are aligned in registration with an orifice which is traversed by the cantilever projection of the adapter member.
  • the two lesser sides of the straight section of the tooth member lugs are rectilinear and noticeably parallel to one another and that the straight section of each tooth member lug has an equal width along its whole extension, however, it can have one or more areas of reduced extension with a different width from the prevailing width.
  • Figure 1 shows an angularly exploded perspective view of an ensemble made up of an adapter member 1 and a tooth member 2.
  • Adapter member 1 is made up of a central core 3 from which there extend in the axial direction, on one side, a fork 4, for engaging adapter member 1 on the active edge of the bucket or shovel of a digger, and, on the other side, a cantilever projection 5, or nose, having a prismatic shape.
  • Central core 3 is provided, on both sides, with respective rectilinear recesses 6 and, in the transverse direction, with an orifice for housing a retention pin, with both arrangements being positioned so as not to reduce the section of nose 5.
  • Tooth member 2 is made up of central core 7 which, in the axial direction, comprises a central housing 8, from which there emerge from the mouth 9 thereof respective rectilinear lugs 10, and a working point 11.
  • rectilinear lugs 10 of tooth member 2 are housed in rectilinear recesses 6 of adapter 1, with the engagement being maintained, in one embodiment example, by means of a passage 12, made up of orifices provided in alignment in rectilinear lugs 10 of tooth member 2 and in central core 3 of adapter member 1, into which a retention pin 13 is inserted.
  • the object of the invention consists, as shown in Figures 5 and 7, in relation to Figures 4 and 6, in the fact that the straight section of each of rectilinear lugs 10 of tooth member 2, which is concave in one part 14 and substantially complements the convex profile of back 15 of the rectilinear recesses of adapter member 1, has, as detailed in Figure 8, two end sections 10A which meet in a convergent fashion in an intermediate section 10B differentiated from the afore-mentioned sections.
  • said sections 10A y 10B have been separated by imaginary dotted lines M.
  • Figures 5, 7 and 8 illustrate the case where, in the straight section of rectilinear lugs 10, end sections 10A are rectilinear and equal and differentiated intermediate section 10B is curvilinear, being separated from each other by the imaginary lines M.
  • Figure 9 illustrates the case where, in the straight section of rectilinear lugs 10, end sections 10A are rectilinear and equal and differentiated intermediate section 10B is rectilinear, with a possible passage 12 for a retention pin also being indicated.
  • Figures 10 and 11 illustrate the case where rectilinear lugs 10 show their end sections 10A and 10C, with a rectilinear shape, at a different length and with an equal angle of incidence on differentiated intermediate section 10B, positioned in Figure 10 symmetrical with respect to one point, whereas in Figure 11 the symmetrical arrangement is specular.
  • the case in this last figure can adopt an inverse position, in which end sections 10A, the longer ones, are positioned underneath end sections 10C, the shorter ones.
  • the longer end sections 10A are facing the direction of the stresses to be withstood.
  • Figure 12 illustrates some of the different variations of the straight section that can be adopted when manufacturing rectilinear lugs 10.
  • the straight section of a rectilinear lug 16 showing its end sections 16A with a curvilinear shape and differentiated intermediate section 16B with a curvilinear shape with a curve different to that of end sections 16A.
  • the straight section of rectilinear lug 17 shows its end sections 17A with a curvilinear shape and its differentiated intermediate section 17 with a rectilinear shape.
  • the straight section of rectilinear lug 18 shows its end sections 18A with a rectilinear shape and its differentiated intermediate section 18B with a curvilinear shape.
  • the straight section of rectilinear lug 19 shows its end sections 19A with a rectilinear shape, the same as its differentiated intermediate section 19B.
  • a great variety of straight sections can be obtained by combining the end sections according to their length, trajectory and angle of incidence with straight, curved, short, long, etc. differentiated intermediate sections.
  • Figure 13 shows half a section of the engagement between adapter member 1 and tooth member 2 similar to that shown in Figures 5, 7 and 8 to 11, which illustrates a straight section of a rectilinear lug 20 where its differentiated intermediate section 20B has a different width to end sections 20A, and back 15 of rectilinear recess 6 of adapter member 1 is provided with a projection 21 which complements depression 22 in differentiated intermediate section 20B.
  • nose 5 which develops from a hexagon
  • it can adapt to the latter without the need to remove material from nose 5 to apply rectilinear lugs.
  • the robustness of nose 5 is not reduced and neither is the number of sharp edges increased, therefore reducing the risk of having concentrations of stress and achieving a simple but effective geometric arrangement.
  • the lugs are completely closed, working in a compressed state when vertical stress, either upward or downward, is applied to the ensemble.

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)
  • Agricultural Machines (AREA)
  • Earth Drilling (AREA)
EP01972107A 2000-10-03 2001-10-02 Coupling system for the teeth of an excavator Withdrawn EP1411178A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ES200002454A ES2168988B1 (es) 2000-10-03 2000-10-03 Sistema de acoplamiento para los dientes de una excavadora.
ES200002454 2000-10-03
PCT/ES2001/000363 WO2002029167A1 (es) 2000-10-03 2001-10-02 Sistema de acoplamiento para los dientes de una excavadora

Publications (1)

Publication Number Publication Date
EP1411178A1 true EP1411178A1 (en) 2004-04-21

Family

ID=8495238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01972107A Withdrawn EP1411178A1 (en) 2000-10-03 2001-10-02 Coupling system for the teeth of an excavator

Country Status (12)

Country Link
US (1) US20040010949A1 (es)
EP (1) EP1411178A1 (es)
JP (1) JP2004510900A (es)
KR (1) KR20030036881A (es)
CN (1) CN1468340A (es)
AU (1) AU2001291901A1 (es)
BR (1) BR0114331A (es)
CA (1) CA2424322A1 (es)
ES (1) ES2168988B1 (es)
MX (1) MXPA03002893A (es)
WO (1) WO2002029167A1 (es)
ZA (1) ZA200302463B (es)

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ITUD20040021A1 (it) * 2004-02-10 2004-05-10 Italricambi Srl Dente per benne di escavatori o simili
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US9062436B2 (en) 2011-10-07 2015-06-23 Caterpillar Inc. Implement tooth assembly with tip and adapter
USD707264S1 (en) 2011-10-07 2014-06-17 Caterpillar Inc. Adapter for a ground engaging machine implement
USD706312S1 (en) 2011-10-07 2014-06-03 Caterpiller, Inc. Tip for a ground engaging machine implement
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USD775241S1 (en) 2015-08-12 2016-12-27 Caterpillar Inc. Tip for a ground engaging machine implement
USD774565S1 (en) 2015-08-12 2016-12-20 Caterpillar Inc. Tip for a ground engaging machine implement
USD775243S1 (en) 2015-08-12 2016-12-27 Caterpillar Inc. Tip for a ground engaging machine implement
USD775673S1 (en) 2015-08-12 2017-01-03 Caterpillar Inc. Tip for a ground engaging machine implement
USD774566S1 (en) 2015-08-12 2016-12-20 Caterpillar Inc. Tip for a ground engaging machine implement
USD774567S1 (en) 2015-08-12 2016-12-20 Caterpillar Inc. Tip for a ground engaging machine implement
USD775240S1 (en) 2015-08-12 2016-12-27 Caterpillar Inc. Tip for a ground engaging machine implement
USD774109S1 (en) 2015-08-12 2016-12-13 Caterpillar Inc. Tip for a ground engaging machine implement
USD775242S1 (en) 2015-08-12 2016-12-27 Caterpillar Inc. Tip for a ground engaging machine implement
USD803275S1 (en) * 2016-12-15 2017-11-21 Caterpillar Inc. Tip for a ground engaging machine implement
USD806758S1 (en) * 2016-12-15 2018-01-02 Caterpillar Inc. Tip for a ground engaging machine implement
USD806140S1 (en) * 2016-12-15 2017-12-26 Caterpillar Inc. Adapter for a ground engaging machine implement
USD803897S1 (en) * 2016-12-15 2017-11-28 Caterpillar Inc. Tip for a ground engaging machine implement
USD806142S1 (en) * 2016-12-15 2017-12-26 Caterpillar Inc. Adapter for a ground engaging machine implement
USD806139S1 (en) * 2016-12-15 2017-12-26 Caterpillar Inc. Adapter for a ground engaging machine implement
USD805112S1 (en) * 2016-12-15 2017-12-12 Caterpillar Inc. Tip for a ground engaging machine implement
USD803902S1 (en) * 2016-12-15 2017-11-28 Caterpillar Inc. Tip for a ground engaging machine implement
USD803899S1 (en) * 2016-12-15 2017-11-28 Caterpillar Inc. Tip for a ground engaging machine implement
USD806141S1 (en) * 2016-12-15 2017-12-26 Caterpillar Inc. Adapter for a ground engaging machine implement
USD803898S1 (en) * 2016-12-15 2017-11-28 Caterpillar Inc. Tip for a ground engaging machine implement
USD806759S1 (en) * 2016-12-15 2018-01-02 Caterpillar Inc. Tip for a ground engaging machine implement
USD803274S1 (en) * 2016-12-15 2017-11-21 Caterpillar Inc. Tip for a ground engaging machine implement
USD840441S1 (en) 2016-12-15 2019-02-12 Caterpillar Inc. Adapter for a ground engaging machine implement
USD803901S1 (en) * 2016-12-15 2017-11-28 Caterpillar Inc. Tip for a ground engaging machine implement
USD805562S1 (en) * 2016-12-15 2017-12-19 Caterpillar Inc. Adapter for a ground engaging machine implement
USD803900S1 (en) * 2016-12-15 2017-11-28 Caterpillar Inc. Tip for a ground engaging machine implement
USD832310S1 (en) 2017-08-30 2018-10-30 Caterpillar Inc. Adapter for a ground engaging machine implement
USD905765S1 (en) 2019-03-07 2020-12-22 Caterpillar Inc. Adapter for a ground engaging machine implement
USD888785S1 (en) 2019-03-07 2020-06-30 Caterpillar Inc. Adapter for a ground engaging machine implement
USD894969S1 (en) 2019-04-24 2020-09-01 Caterpillar Inc. Tip for a ground engaging machine implement
USD894968S1 (en) 2019-04-24 2020-09-01 Caterpillar Inc. Adapter for a ground engaging machine implement
USD894970S1 (en) * 2019-04-24 2020-09-01 Caterpillar Inc. Adapter for a ground engaging machine implement
USD894972S1 (en) * 2019-04-26 2020-09-01 Caterpillar Inc. Adapter for a ground engaging machine implement
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Also Published As

Publication number Publication date
ZA200302463B (en) 2004-03-10
ES2168988B1 (es) 2003-12-01
CA2424322A1 (en) 2003-03-28
BR0114331A (pt) 2003-10-07
US20040010949A1 (en) 2004-01-22
JP2004510900A (ja) 2004-04-08
AU2001291901A1 (en) 2002-04-15
WO2002029167A1 (es) 2002-04-11
KR20030036881A (ko) 2003-05-09
CN1468340A (zh) 2004-01-14
ES2168988A1 (es) 2002-06-16
MXPA03002893A (es) 2003-06-24

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