EP1718809B1 - Zahn für einen baggereimer - Google Patents
Zahn für einen baggereimer Download PDFInfo
- Publication number
- EP1718809B1 EP1718809B1 EP05702423A EP05702423A EP1718809B1 EP 1718809 B1 EP1718809 B1 EP 1718809B1 EP 05702423 A EP05702423 A EP 05702423A EP 05702423 A EP05702423 A EP 05702423A EP 1718809 B1 EP1718809 B1 EP 1718809B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tooth
- main body
- pin means
- hereinbefore
- work element
- 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.)
- Not-in-force
Links
Images
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
-
- 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
- E02F9/2825—Mountings therefor using adapters
Definitions
- the present invention concerns a tooth for buckets of excavators or suchlike, consisting of a work element with a pointed shape, also called point, and a relative support element, or point-bearer, associated with each other by pin means.
- Buckets for excavators of a known type substantially comprise an open box-like body, constrained to the mechanical arm of the excavator, on one side of which a plurality of teeth are mounted.
- the document US 2004/010949 A1 discloses a tooth for a bucket of excavators, or similar equipment, according to the preamble of claim 1.
- Each tooth consists of two components: a support element, or point-bearer, attached to the side of the box-like body of the bucket, and a work element, or point, associated with said point-bearer due to their coupling shape and constrained thereto by means of a pin element.
- the point-bearer has a wedge-shaped protrusion able to be inserted in a cavity of a mating shape made in the rear part of the point; the pin element is arranged transverse, and substantially through, in a seating made on said wedge-shaped protrusion and on the walls of the cavity of the point.
- This type of tooth allows the point to be interchangeable, when it has become worn due to the knocks and high loads to which it is subject when the bucket is used.
- the pin element which is substantially put in direct contact with the point, is subject to considerable forces which are then transferred to the point-bearer, precisely in correspondence with the wedge-shaped protrusion, that is, in correspondence with the part where its section is weakened due to the presence of the insertion seating of the pin element.
- This situation can therefore entail, even frequently, the need to completely replace the teeth of the bucket, with long periods of inactivity of the excavators and an increase in the management and maintenance costs of the excavators.
- One purpose of the present invention is to achieve a tooth for buckets of excavators, or similar equipment, wherein the stresses to which the point is subjected are discharged in a zone of high resistance of the point-bearer, so as to reduce the wear, the damage and the breakages done to the point-bearer and the pin element.
- Another purpose of the invention is to achieve a tooth which allows a precise coupling of the point and the point-bearer, in any case facilitating the operations to assemble and dismantle the point in order to replace it.
- the Applicant has devised and embodied the present invention to overcome the shortcomings of the state of the art in order to achieve the aforesaid purposes and to obtain other advantages.
- the tooth according to the invention comprises, like the teeth for buckets of a known type, a work element, or point, and a relative support element, or point-bearer; the support element consists in a single piece of a main body and a front protrusion able to be inserted in a mating cavity made at the rear of the work element, so as to define a coupling condition of the work element itself and the support element, in which the latter are able to be reciprocally clamped by inserting pin means into a relative housing seating.
- the work element comprises at least a fin, or appendix, protruding from the rear with respect to the relative cavity, able to couple with the main body of the support element; the housing seating for the pin means is made partly on the appendix and partly in the main body.
- the work element comprises two fins, parallel to each other and symmetrical with respect to a median longitudinal axis of the work element, defined by an extension of the lateral walls of the cavity.
- Said fins are substantially shaped like a prism with a trapezoid base and are able to be arranged in mating recesses of the main body defining a relative upper edge.
- the tooth according to the invention normally has a first slit between the upper profile of the fins and the upper edge of the mating recesses.
- the housing seating of the pin means is defined by a through hole, made on the main body, and by two apertures, each one made on a relative fin, able to be put in cooperation with said through hole.
- the apertures of the fins are slightly off-center, towards the front protrusion, with respect to the through hole, so that the insertion of the pin means into said housing seating determines the alignment of said apertures and the through hole and a further penetration of the front protrusion into the mating cavity.
- said pin means are axially hollow and have a longitudinal through cut able to allow a partial elastic deformation of their section.
- the front protrusion of the work element has a substantially polygonal transverse section, for example square, hexagonal or suchlike, which progressively reduces from its rear end, that is, facing towards the main body, to the front end.
- said front protrusion has at least a longitudinal groove on one face.
- the reference number 10 denotes the tooth according to the invention for buckets 11 of excavators or similar equipment.
- Said tooth 10 comprises a point-bearer 12, able to be attached in a known manner to the lower side 11a of the bucket 11, and a point 13 able to be associated due to their coupling shape at the front of the point-bearer 12 and able to be clamped on the latter by means of a pin 17.
- the point-bearer 12 defines in a single piece a main body 14, at the rear, able to be positioned above the lower side 11a of the bucket 11, and a front protrusion 15, wedge-shaped, able to be inserted in a cavity 16, of mating shape, made on the rear of the point 13, interfering with the inner surface of the cavity 16.
- the front protrusion 15 has a substantially hexagonal transverse section, with two lateral grooves 23.
- the front protrusion 15 has a substantially square transverse section, with two grooves 23 respectively on the upper and lower face.
- the pin 17 is advantageously axially hollow,and has a longitudinal cut 17a which allows a partial elastic deformation of the section.
- the lateral walls 18 of said cavity 16 extend beyond the latter, defining two protruding fins, or appendixes, 19; said fins 19, in the condition wherein the front protrusion 15 is inserted in said cavity 16, are able to house in corresponding recesses 22 of the main body 14, so as to overlap with the latter.
- the fins 19, substantially configured as a prism with a trapezoid base have at the upper part respective hollows 19a of a width substantially equivalent to the diameter of the pin 17; said hollows 19a are able to align with a through hole 21, made transversely in correspondence with the recesses 22 of the main body 14, and of a diameter substantially equivalent to that of the pin 17, in order to define therewith a housing seating 20 for the pin 17.
- the hollows 19a have the relative axis slightly off-center, towards the front protrusion 15, with respect to the axis of the hole 21; for this reason, the insertion of the pin 17 into the seating 20 draws the point 13 on the point-bearer 12, determining a further penetration of the front protrusion 15 into the cavity 16 and hence an increase in interference between the two, making the clamping of the point-bearer 12 and point 13 more stable and secure.
- first slit 24 of a width in the range of some tenths of a millimeter
- second slit 26 of a slightly greater width
- the fins 19 instead of the hollows 19a the fins 19 have respective through eyelets 19b, which have the same function; said through eyelets 19b are arranged substantially vertical and are able to align with a hole 21 made in a more central position on the main body 14 of the point-bearer 12.
- the load "P" weighing on the front part of the point 13 determines a moment which tends to make the point 13 rotate with respect to the point-bearer 12, in the direction of the arrow indicated by the letter “R” ( figs. 3 and 5 ), taking the upper profile 19c of the fins 19 to abut on the upper edge 22a of the recesses 22, so as to discharge at least a part of the stresses deriving from the load "P" on the main body 14.
- the lower edge 19d of the hollow 19a approaches the pin 17, but without coming into contact with it, so that the same pin 17 is not substantially affected by the shearing forces deriving from the load "P", thus considerably reducing the risks of breakages.
- the tooth 10 according to the invention therefore allows a better distribution on the point-bearer 12 of the stresses deriving from the load "P" weighing on the point 13, limiting the forces affecting the pin 17.
- the front protrusion 15 could have a rhomboid or pentagonal section, or otherwise.
- the pin 17 could be of a different type with respect to the one shown here.
Claims (15)
- Zahn für eine Schaufel (11) von Baggern oder ähnlichen Geräten, die ein Arbeitselement (13) umfasst, das mit einem dazugehörigen Trageelement (12) verbunden werden kann, wobei das Trageelement (12) einen Hauptkörper (14), mit dem es an der Schaufel (11) befestigt werden kann, und einen vorderen Vorsprung (15) aufweist, der in einen passenden Hohlraum (16) eingeführt werden kann, der an der Rückseite des Arbeitselementes (13) ausgebildet ist, um einen Kopplungszustand zwischen dem Arbeitselement (13) und dem Trageelement (12) herzustellen, und wobei eine Bolzeneinrichtung (17) sowohl in das Trageelement (12) als auch in das Arbeitselement (13) eingeführt werden kann, um das Arbeitselement (13) in dem Kopplungszustand hin und her beweglich an dem Trageelement (12) zu halten, das Arbeitselement (13) wenigstens einen Ansatz (19) umfasst, der von der Rückseite in Bezug auf den Hohlraum (16) vorsteht und mit dem Hauptkörper (14) an einer passenden Aussparung (22) gekoppelt werden kann, die wenigstens einen dazugehörigen oberen Rand (22a) aufweist, und ein Aufnahmesitz (20) für die Bolzeneinrichtung (17) teilweise in dem Ansatz (19) und teilweise in dem Hauptkörper (14) ausgebildet ist, dadurch gekennzeichnet, dass in dem Kopplungszustand zwischen dem oberen Profil (19c) des Ansatzes (19) und dem oberen Rand (22a) ein erster Schlitz (24) vorhanden ist.
- Zahn nach Anspruch 1, dadurch gekennzeichnet, dass das Arbeitselement (13) zwei Ansätze (19) umfasst, die im Wesentlichen symmetrisch in Bezug auf eine MittelLängsachse desselben angeordnet sind.
- Zahn nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jeder der zwei Ansätze (19) durch eine Verlängerung wenigstens einer Seitenwand (18) des Hohlraums (16) gebildet wird.
- Zahn nach einem der vorangehenden Ansprüche, wobei der Hohlraum (16) an dem unteren Teil durch eine untere Wand (25) begrenzt wird, dadurch gekennzeichnet, dass in dem Kopplungszustand zwischen dem unteren Segment (14a) des Hauptkörpers (14) und der unteren Wand (25) ein zweiter Schlitz (26) vorhanden ist, der eine größere Breite hat als der erste Schlitz (24).
- Zahn nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Ansätze (19) im Wesentlichen als ein Prisma mit einer trapezförmigen Basis ausgebildet sind.
- Zahn nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Aufnahmesitz (20) von einem Durchgangsloch (21), das an dem Hauptkörper (14) ausgebildet ist und einen Querschnitt hat, der zu der Bolzeneinrichtung (17) passt, sowie von einer Öffnung (19a,19b) gebildet wird, die an jedem der Ansätze (19) ausgebildet ist und mit dem Durchgangsloch (21) zusammenwirken kann.
- Zahn nach Anspruch 6, dadurch gekennzeichnet, dass zwischen der Bolzeneinrichtung (17), die in den Aufnahmesitz (20) eingeführt ist, und dem unteren Rand (19d) der Öffnung (19a, 19b) ein Zwischenraum (27) vorhanden ist, der größer ist als die Breite des ersten Schlitzes (24).
- Zahn nach Anspruch 6, dadurch gekennzeichnet, dass in dem Kopplungszustand, und, wenn die Bolzeneinrichtung (17) von dem Aufnahmesitz (20) getrennt ist, die Öffnung (19a, 19b) in Bezug auf das Durchgangsloch (21) geringfügig exzentrisch zu dem vorderen Vorsprung (15) hin versetzt ist, wobei das Einführen der Bolzeneinrichtung (17) in den Aufnahmesitz (20) die Ausrichtung der Öffnung (19a, 19b) und des Durchgangslochs (21) sowie das weitere Eindringen des vorderen Vorsprungs (15) in den Hohlraum (16) bewirkt.
- Zahn nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Öffnung aus einem Hohlraum (19a) des Ansatzes (19) besteht.
- Zahn nach Anspruch 1 bis 8, dadurch gekennzeichnet, dass die Öffnung aus einer Öse (19b) besteht, die an dem Ansatz (19) vorhanden ist.
- Zahn nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der vordere Vorsprung (15) einen im Wesentlichen viereckigen Querschnitt hat.
- Zahn nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der vordere Vorsprung (15) einen Querschnitt hat, der von seinem hinteren Ende, das dem Hauptkörper (14) zugewandt ist, zu seinem vorderen Ende hin schmaler wird.
- Zahn nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der vordere Vorsprung (15) wenigstens eine Längsnut (23) an einer Fläche aufweist.
- Zahn nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Bolzeneinrichtung (17) einen Querschnitt hat, der wenigstens teilweise elastisch verformt werden kann.
- Zahn nach Anspruch 14, dadurch gekennzeichnet, dass die Bolzeneinrichtung (17) axial hohl ist und einen durchgehenden Einschnitt (17a) in Längsrichtung aufweist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05702423T PL1718809T3 (pl) | 2004-02-10 | 2005-02-04 | Ząb do łyżki w koparce lub podobnym urządzeniu, składający się z ostro zakończonego elementu, nazywanego także końcówką oraz dodatkowych elementów wspomagających lub nośnika końcówki, połączonych razem ze sobą za pomocą bolca |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000021A ITUD20040021A1 (it) | 2004-02-10 | 2004-02-10 | Dente per benne di escavatori o simili |
PCT/IB2005/000277 WO2005080695A1 (en) | 2004-02-10 | 2005-02-04 | Tooth for an excavator bucket |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1718809A1 EP1718809A1 (de) | 2006-11-08 |
EP1718809B1 true EP1718809B1 (de) | 2008-10-01 |
Family
ID=34878881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05702423A Not-in-force EP1718809B1 (de) | 2004-02-10 | 2005-02-04 | Zahn für einen baggereimer |
Country Status (8)
Country | Link |
---|---|
US (1) | US20070256335A1 (de) |
EP (1) | EP1718809B1 (de) |
AT (1) | ATE409782T1 (de) |
DE (1) | DE602005010051D1 (de) |
ES (1) | ES2317185T3 (de) |
IT (1) | ITUD20040021A1 (de) |
PL (1) | PL1718809T3 (de) |
WO (1) | WO2005080695A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102308050A (zh) * | 2009-02-06 | 2012-01-04 | 麦塔洛吉尼亚股份有限公司 | 用于连接挖掘机和类似机器的磨损元件与适配器的连接系统及其部件 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104652524B (zh) | 2006-03-30 | 2020-06-30 | 爱斯科集团有限责任公司 | 用于挖掘设备的磨耗构件及磨耗组件 |
AU2008251647C1 (en) * | 2007-05-10 | 2016-12-22 | Esco Group Llc | Wear assembly for excavating equipment |
AU2010330673B2 (en) | 2009-12-11 | 2013-05-16 | Cqms Pty Ltd | A lock assembly for an excavator wear member |
AU2013205251C1 (en) * | 2009-12-11 | 2020-01-23 | Cqms Pty Ltd | A lock assembly for an excavator wear member |
US10011977B2 (en) | 2011-09-08 | 2018-07-03 | Miguel Guimaraes | Lock assembly for an excavator wear member |
US8943717B2 (en) | 2011-10-08 | 2015-02-03 | Caterpillar Inc. | Implement tooth assembly with tip and adapter |
US9062436B2 (en) | 2011-10-07 | 2015-06-23 | 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 |
US9476184B2 (en) | 2011-12-08 | 2016-10-25 | Cqms Pty Ltd | Excavator wear assembly |
US9290914B2 (en) | 2013-08-01 | 2016-03-22 | Caterpillar Inc. | Ground engaging tool assembly |
US9273448B2 (en) * | 2013-08-01 | 2016-03-01 | Caterpillar Inc. | Ground engaging tool assembly |
US9441351B2 (en) * | 2013-08-01 | 2016-09-13 | Caterpillar Inc. | Ground engaging tool assembly |
US9441349B2 (en) * | 2013-08-01 | 2016-09-13 | Caterpillar Inc. | Ground engaging tool assembly |
GB2532335B (en) * | 2014-10-02 | 2017-03-29 | Pearson Eng Ltd | Improvements in or relating to ploughing tines |
MX359297B (es) * | 2015-02-13 | 2018-09-24 | Black Cat Blades Ltd | Miembros de desgaste para instrumentos de excavacion. |
USD800798S1 (en) | 2015-10-02 | 2017-10-24 | Pearson Engineering Limited | Plowing tine tip |
USD779566S1 (en) | 2015-10-02 | 2017-02-21 | Pearson Engineering Limited | Plowing tine replacement section |
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US6240663B1 (en) * | 2000-09-18 | 2001-06-05 | G. H. Hensley Industries, Incorporated | Streamlined resilient connection system for attaching a wear member to an excavating lip structure |
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CA97589S (en) * | 2001-04-02 | 2003-06-19 | Volvo Constr Equip Holding Se | Tooth body and tooth carrier assembly |
US6766602B2 (en) * | 2002-08-08 | 2004-07-27 | Caterpillar Inc. | Corner tooth adapter arrangement for an excavating implement |
USD499749S1 (en) * | 2003-10-14 | 2004-12-14 | H&L Tooth Company | Ground engaging tooth |
-
2004
- 2004-02-10 IT IT000021A patent/ITUD20040021A1/it unknown
-
2005
- 2005-02-04 WO PCT/IB2005/000277 patent/WO2005080695A1/en active IP Right Grant
- 2005-02-04 DE DE602005010051T patent/DE602005010051D1/de active Active
- 2005-02-04 US US10/597,831 patent/US20070256335A1/en not_active Abandoned
- 2005-02-04 PL PL05702423T patent/PL1718809T3/pl unknown
- 2005-02-04 AT AT05702423T patent/ATE409782T1/de not_active IP Right Cessation
- 2005-02-04 ES ES05702423T patent/ES2317185T3/es active Active
- 2005-02-04 EP EP05702423A patent/EP1718809B1/de not_active Not-in-force
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102308050A (zh) * | 2009-02-06 | 2012-01-04 | 麦塔洛吉尼亚股份有限公司 | 用于连接挖掘机和类似机器的磨损元件与适配器的连接系统及其部件 |
CN102308050B (zh) * | 2009-02-06 | 2014-11-19 | 麦塔洛吉尼亚股份有限公司 | 用于连接挖掘机和类似机器的磨损元件与适配器的连接系统及其部件 |
Also Published As
Publication number | Publication date |
---|---|
ATE409782T1 (de) | 2008-10-15 |
PL1718809T3 (pl) | 2009-04-30 |
ES2317185T3 (es) | 2009-04-16 |
US20070256335A1 (en) | 2007-11-08 |
DE602005010051D1 (de) | 2008-11-13 |
EP1718809A1 (de) | 2006-11-08 |
ITUD20040021A1 (it) | 2004-05-10 |
WO2005080695A1 (en) | 2005-09-01 |
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