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EP2241683A1 - Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie - Google Patents

Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie Download PDF

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Publication number
EP2241683A1
EP2241683A1 EP09005321A EP09005321A EP2241683A1 EP 2241683 A1 EP2241683 A1 EP 2241683A1 EP 09005321 A EP09005321 A EP 09005321A EP 09005321 A EP09005321 A EP 09005321A EP 2241683 A1 EP2241683 A1 EP 2241683A1
Authority
EP
European Patent Office
Prior art keywords
bucket teeth
stopping
hole
posts
bucket
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Withdrawn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
EP09005321A
Other languages
German (de)
English (en)
Inventor
Jung-Ching Ko
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP09005321A priority Critical patent/EP2241683A1/fr
Priority to EP10158557A priority patent/EP2248953A1/fr
Publication of EP2241683A1 publication Critical patent/EP2241683A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • E02F9/2891—Tools for assembling or disassembling

Definitions

  • the invention relates to a replacement and urging device for the bucket teeth of an engineering construction machine and, in particular, to a replacement and urging device for the bucket teeth of an engineering construction machine that fixes the bucket teeth on the adaptor of a bucket to prevent the bucket teeth from hitting the adaptor repeatedly.
  • FIG. 14 shows a conventional excavator bucket tooth structure.
  • a bucket is formed with several equally spaced bucket teeth 9.
  • Each of the bucket teeth 9 includes a adaptor 90 and a bucket teeth 91.
  • the adaptor 90 has a horizontal first through hole 901.
  • the bucket teeth 91 is mounted on the adaptor 90.
  • Both sides of the bucket teeth have respectively a second through hole 911 corresponding to the first through hole 901 of the adaptor 90.
  • a hammer 93 hits a pin 92 from the second through hole 911 on one side of the bucket teeth 91 into the first through hole 901.
  • a C-shaped buckle 902 positions the pin 92 in the first through hole 901. Both ends of the pin 92 protrude from the second through holes 911, restricting and positioning the bucket teeth 91 on the adaptor 90.
  • the spacing between the bucket teeth 9 of the bucket is limited.
  • the pin 92 When the pin 92 is hit into the predetermined position of the first through hole 901, there is no sufficient hitting distance and appropriate hitting angle. Therefore, the hammer has to be disposed inside a tiny space for hitting. Only after the pin 92 penetrates via the second through hole 911 into an appropriate depth of the first through hole 901 can the user hold the hammer 93 at an angle and further hit the pin 92 with the help of an auxiliary hitting rod.
  • the pin 92 is then completely disposed and positioned between the first through hole 901 and the second through holes 911 of the adaptor 90 and the bucket teeth 91. In this case, the local structure of the pin 92 may be deformed or the entire structure is curved because of the hitting. This causes troubles in replacing the bucket teeth 9 in the future.
  • FIG. 17 is a schematic view of taking off the pin 92.
  • a tube 95 goes through the first through hole 901 of the adaptor 90 on the outermost side.
  • One end of the tube 95 urges against the pin 92 to be taken off.
  • the user then uses a hammer 93 to hit so that the pin 92 escapes from the C-shaped buckle 902, departing from the first through hole 901 and the second through holes 911.
  • the reason for doing this is because the space between the bucket teeth 9 is limited.
  • the hitting strength of the hammer 93 has to be such that the pin 92 escapes from the C-shaped buckle 902. This causes inconvenience in replacements.
  • the pin 92 is locked or clogged by objects inside the through holes 901, 911 and the C-shaped buckle 902, it becomes even more difficult.
  • FIGS. 18 and 19 Please refer to FIGS. 18 and 19 .
  • the adaptor 90 and the bucket teeth 91 are assembled, there is still a gap A between them.
  • the adaptor 90 if there is a gap between the adaptor 90 and the bucket teeth 91, it provides a buffer space for the bucket teeth 91 to hit back the adaptor 90, which is likely to deform the colliding parts of them. Besides, the hitting strength is larger for a larger gap, causing more damages to the adaptor 90 and the bucket teeth 91. Moreover, the second through holes 911 of the bucket teeth 91 erode with the pin 92 to become larger. As shown in FIG. 20 , when the second through holes 911 of the bucket teeth 91 become larger and the gap A is larger than the gap B because of the constant collisions between the adaptor 90 and the bucket teeth 91, the bucket teeth 91 urges against the pin 92, but not the adaptor 90, during a digging process.
  • the pin 92 is constantly hit by the bucket teeth 91 during the digging process.
  • the pin 92 thus often breaks so that the bucket teeth 91 falls off.
  • the bucket teeth 91 may even hurt somebody if it falls from a high place.
  • An objective of the invention is to solve the above-mentioned problems by providing a replacement and urging device whose bucket teeth can be quickly removed and assembled. It is convenient to replace the bucket teeth on the bucket.
  • Another objective of the invention is to prevent the adaptor and bucket teeth from developing a shifting gap during uses. This prevents the pins from being hit by the bucket teeth and breaking.
  • the invention includes:
  • a adaptor which has a fixing part fixed on a bucket, an inserting part protruding from the end of the fixing part that is far from the bucket, a first through hole being formed between its two sides and horizontally through the fixing part, a limiting part being disposed at the center of the first through hole;
  • a bucket teeth which has a slot corresponding to the inserting part on its one end, and has a second through hole of both sides, respectively, each of the second through holes being disposed opposite to each other and in communications with the slot, the bucket teeth being mounted on the inserting part of the adaptor by the slot;
  • an engaging unit which is disposed between the first through hole of the adaptor and the second through holes of the bucket teeth and slides between them for the bucket teeth to be mounted and positioned on the adaptor.
  • FIG. 1 is a three-dimensional schematic view of the disclosed bucket teeth
  • FIG. 2 is an exploded view of the disclosed bucket tooth
  • FIG. 3 is a cross-sectional view showing how the disclosed bucket tooth is taken off
  • FIG. 4 is a schematic view showing the assembly of the disclosed bucket tooth
  • FIG. 5 is a schematic view showing the assembled bucket tooth
  • FIG. 6 is a cross-sectional view of the second embodiment of the invention.
  • FIG. 7 is a cross-sectional view of the third embodiment of the invention.
  • FIG. 8 is a three-dimensional exploded view of the fourth embodiment of the invention.
  • FIG. 9 shows the initial positioning of the disclosed bucket tooth
  • FIG. 10 illustrates the collision of the disclosed bucket tooth during a digging process
  • FIG. 11 is a schematic view of adjusting the stopping posts
  • FIG. 12 is a schematic view of positioning the disclosed bucket tooth after the adjustment
  • FIG. 13 is a cross-sectional view of the fifth embodiment of the invention.
  • FIG. 14 is a three-dimensional exploded view of a conventional bucket tooth
  • FIG. 15 is a top view of positioning a pin in the conventional bucket tooth
  • FIG. 16 is a side view of positioning a pin in the conventional bucket tooth
  • FIG. 17 is a top view of taking off a pin from the conventional bucket tooth
  • FIG. 18 is a cross-sectional side view of the conventional bucket tooth
  • FIG. 19 is a schematic view showing the gap between the adaptor and the bucket teeth of the conventional bucket tooth.
  • FIG. 20 shows that a pin in the conventional bucket tooth breaks due to collisions.
  • FIGS. 1 to 5 Please refer to FIGS. 1 to 5 for a first embodiment of the invention.
  • This embodiment provides a replacement and urging device for the bucket teeth of an engineering construction machine. It includes: a adaptor 1, a bucket teeth 5, and an engaging unit 7.
  • the adaptor 1 has a fixing part 11. As shown in FIGS. 1 and 2 , the adaptor 1 uses its fixing part 11 to hold onto the front edge of a bucket 2. The fixing part 11 is further soldered onto the bucket 2.
  • An inserting part 12 protrudes from one end of the fixing part 11 that is far from the bucket 2.
  • a first through hole 121 is formed between its two sides, horizontally through the fixing part 11.
  • a limiting part 122 is provided at the center of the first through hole 121.
  • One end of the bucket teeth 5 has a slot 51 corresponding to the inserting part 12. Both sides of the bucket teeth 5 have a second through hole 52, respectively. The second through holes 52 are disposed opposite to each other and in communications with the slot 51.
  • the bucket teeth 5 is mounted on the inserting part 12 of the adaptor 1 by the slot 51.
  • the engaging unit 7 is disposed between the first through hole 121 of the adaptor 1 and the second through holes 52 of the bucket teeth 5 and can slide between them. It allows the bucket teeth 5 to mount and position on the bucket teeth 1.
  • the engaging unit 7 includes two stopping posts 3 and an elastic element 4.
  • the stopping posts 3 are inserted into both ends of the first through hole 121 of the inserting part 12, respectively. One end of each of the stopping posts 3 protrudes from the first through hole 121 and correspondingly into the second through hole 52.
  • the diameter of the second through holes 52 is smaller than the outer diameter of the stopping posts 3.
  • the two opposite sidewalls of the bucket teeth 5 inside the slot 51 have a notch 53 in communications with the second through holes 52, respectively.
  • the diameter difference between the second through holes 52 and the notch 53 forms a stopping wall 54.
  • Each of the stopping walls 54 stops the corresponding stopping post 3 inside the corresponding notch 53. This prevents the stopping posts from escaping the corresponding second through holes 52.
  • Each of the stopping posts 3 has a groove 32 on one end of inside the first through hole 121.
  • the grooves 32 are disposed facing each other.
  • An elastic element 4 is interposed between the two grooves 32. Both ends of the elastic element 4 are inside the corresponding grooves 32 to urge against the stopping posts 3.
  • the elastic element 4 in this embodiment is an urging spring.
  • each of the stopping posts 3 retracts into the first through hole 121, the limiting part 122 inside the first through hole stops so that the two stopping posts slide the same distance therein.
  • the purpose of this is to average the urging force of the elastic element 4 on the two stopping posts 3.
  • each of the stopping posts 3 is mounted with at least one stopping ring 31 to prevent alien objects from entering the grooves 32 of the stopping ports 3 via the gap between the stopping posts 3 and the inserting part 12.
  • the current embodiment uses the two stopping rings 31 mounted around the stopping posts 3 to stop the alien objects. So no pebbles or metal objects fall into the second through holes 52 of the bucket teeth 5 and the stopping posts 3. The invention thus prevents the stopping posts 3 from locking or jamming the first through holes 121.
  • a holding tool 6 (a C-shaped clamp in the drawings) can be used to press the two stopping posts 3 into the first through hole 121 of the inserting part 12 of the adaptor 1.
  • the slot 51 of the bucket teeth 5 is mounted on the inserting part 12.
  • the part of the stopping posts 3 next to the inner edge of the slot 51 of the bucket teeth 5 first urges against the inner front edge of the slot 51 of the bucket teeth 5.
  • the slot 51 of the bucket teeth 5 is directly mounted onto the inserting part 12 of the adaptor 1.
  • the two stopping posts 3 correspond to the stopping walls 54 of the second through holes 52 on both sides of the bucket teeth 5.
  • the elastic urging force of the elastic element 4 pushes and goes into the stopping walls 54 of the corresponding second through holes 52, thereby positioning the bucket teeth 5 on the adaptor 1.
  • each of the stopping posts 3 is mounted with a stopping ring 31, alien objects can be blocked so that no pebbles or metal objects will fall between the stopping posts 3 and the second through holes 52 of the bucket teeth 5. This ensures that the two stopping posts 3 encounter no resistance while sliding.
  • the invention has many other embodiments that differ from the current one only in minor bucket teeth. Please refer to FIG. 6 for a second embodiment of the invention.
  • the elastic element 4A is urethane that also achieves the same urging effect as in the first embodiment.
  • the engaging unit 7 consists of two stopping posts 3A, each of which is a magnet.
  • the facing ends of the two stopping posts 3A in the first through hole 121 are of the same polarity.
  • the elastic element 4 in the first embodiment is replaced by the magnetic property of the stopping posts 3. Since the stopping posts 3A are made of a metal, they can become magnets through magnetization. As shown in FIG. 7 , the end of each of the stopping posts 3A inside the first through hole 121 is the S pole. After the two stopping posts 3A retract into the first through hole 121, they can automatically spring out due to the repulsive force between them. They can also adhere onto the stopping walls 54 and stop at the grooves 53. So they stop between the first through hole 121 of the adaptor 1 and the second through holes 52 of the bucket teeth 5. Therefore, they still achieve the same urging and positioning effects as the elastic element 4 and the stopping posts 3 in the first embodiment.
  • the bucket teeth 5 has an inner guiding angle 55 on the side that the second through holes 52 open towards the slot 51.
  • the end of each of the stopping posts 3 protruding from the first through hole 121 has an outer guiding angle 33 towards the fixing part 11.
  • the outer guiding angle 33 attaches the bucket teeth 5 to the inner guiding angle 55 of the second through hole 52.
  • the depth of the outer guiding angle 33 is smaller than the inner guiding angle 55. This keeps a gap so that the adaptor 1 and the bucket teeth 5 do not have collisions.
  • FIG. 9 shows that the outer guiding angle 33 of the two stopping posts 33 initially urges against the inner guiding angle 55 of the bucket teeth 5 when the bucket teeth 5 is mounted on the adaptor 1. As shown in the drawing, the adaptor 1 and the bucket teeth 5 are urged by the two stopping posts 3. Therefore, there is no sliding gap.
  • the two stopping posts 3 push outwards.
  • the inner guiding angle 33 attaches to the outer guiding angle 53 to stop the bucket teeth 5. Therefore, there is no sliding gap between the bucket teeth 5 and the adaptor 1. There is then no buffer space for the adaptor 1 and the bucket teeth 5 to hit against each other. This prevents them from damages due to collisions.
  • the bucket teeth 5 does not hit the stopping posts 3 and break them. Therefore, the disclosed bucket teeth have a very safe structure.
  • Each of the stopping posts 4 protrudes from one end of the first through hole 121.
  • the other side of the outer guiding angle 33 has another corresponding outer guiding angle 33.

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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)
EP09005321A 2009-04-14 2009-04-14 Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie Withdrawn EP2241683A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09005321A EP2241683A1 (fr) 2009-04-14 2009-04-14 Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie
EP10158557A EP2248953A1 (fr) 2009-04-14 2009-04-14 Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09005321A EP2241683A1 (fr) 2009-04-14 2009-04-14 Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10158557.8 Division-Into 2010-03-31

Publications (1)

Publication Number Publication Date
EP2241683A1 true EP2241683A1 (fr) 2010-10-20

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EP10158557A Withdrawn EP2248953A1 (fr) 2009-04-14 2009-04-14 Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie
EP09005321A Withdrawn EP2241683A1 (fr) 2009-04-14 2009-04-14 Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie

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EP10158557A Withdrawn EP2248953A1 (fr) 2009-04-14 2009-04-14 Dispositif de remplacement et d'impulsion pour les dents de creusement d'une machine de construction d'ingénierie

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013059612A3 (fr) * 2011-10-20 2013-07-04 Trinity Industries, Inc. Ensemble dent pour appareil d'excavation avec matériau des terres rares
WO2016089669A1 (fr) * 2014-12-03 2016-06-09 Caterpillar Inc. Outil d'attaque du sol
WO2016135360A1 (fr) * 2015-02-23 2016-09-01 Metalogenia Research & Technologies S.L. Dispositif de fixation d'un élément d'usure ou de protection sur une pelle d'une machine de terrassement, et procédé de fixation et système d'usure ou de protection correspondants
CN107002392A (zh) * 2014-12-03 2017-08-01 卡特彼勒公司 地面接合工具
US9976287B2 (en) 2014-12-03 2018-05-22 Caterpillar Inc. Ground engaging tool
CN108915001A (zh) * 2018-07-09 2018-11-30 成都工合科技有限公司 一种装载机前缘锁紧机构及装载机前缘

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325926A (en) * 1964-03-09 1967-06-20 Mid Continent Steel Casting Co Digger tooth and assembly for an excavating apparatus
US4848013A (en) * 1988-10-24 1989-07-18 Caterpillar Inc. Two pin fastening assembly with interconnecting and retaining means
US6439796B1 (en) * 2000-08-02 2002-08-27 Gh Hensley Industries, Inc. Connector pin apparatus and associated methods
US20080000114A1 (en) * 2006-06-28 2008-01-03 Amsco Cast Products (Canada) Inc. Tooth and adaptor assembly
US20090044435A1 (en) * 2007-08-14 2009-02-19 Amsco Cast Products (Canada) Inc. Retainer Pin and Tooth for Tooth and Adaptor Assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987838A (en) * 1957-08-05 1961-06-13 Elton Stratton Excavating tooth
US4087928A (en) * 1977-04-07 1978-05-09 International Harvester Company Multi-sectional resilient retainer for excavating tooth

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325926A (en) * 1964-03-09 1967-06-20 Mid Continent Steel Casting Co Digger tooth and assembly for an excavating apparatus
US4848013A (en) * 1988-10-24 1989-07-18 Caterpillar Inc. Two pin fastening assembly with interconnecting and retaining means
US6439796B1 (en) * 2000-08-02 2002-08-27 Gh Hensley Industries, Inc. Connector pin apparatus and associated methods
US20080000114A1 (en) * 2006-06-28 2008-01-03 Amsco Cast Products (Canada) Inc. Tooth and adaptor assembly
US20090044435A1 (en) * 2007-08-14 2009-02-19 Amsco Cast Products (Canada) Inc. Retainer Pin and Tooth for Tooth and Adaptor Assembly

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2615194C2 (ru) * 2011-10-20 2017-04-04 Тринити Индастриз, Инк. Сборный зуб для землеройного устройства, содержащий компоненты из редкоземельных материалов
CN103890283A (zh) * 2011-10-20 2014-06-25 特里尼蒂工业有限公司 用于挖掘设备并具有稀土材料的齿组件
KR20140103917A (ko) * 2011-10-20 2014-08-27 트리티니인더스트리이즈인코포레이티드 희토류 재료를 갖춘 굴착 장치용 치형 조립체
US8938895B2 (en) 2011-10-20 2015-01-27 Trinity Industries, Inc. Tooth assembly for excavating apparatus with rare earth material
AU2012325934B2 (en) * 2011-10-20 2016-02-04 Arcosa, Inc. Tooth assembly for excavating apparatus with rare earth material
CN103890283B (zh) * 2011-10-20 2016-04-13 特里尼蒂工业有限公司 用于挖掘设备并具有稀土材料的齿组件
WO2013059612A3 (fr) * 2011-10-20 2013-07-04 Trinity Industries, Inc. Ensemble dent pour appareil d'excavation avec matériau des terres rares
CN107002392A (zh) * 2014-12-03 2017-08-01 卡特彼勒公司 地面接合工具
US9976287B2 (en) 2014-12-03 2018-05-22 Caterpillar Inc. Ground engaging tool
WO2016089669A1 (fr) * 2014-12-03 2016-06-09 Caterpillar Inc. Outil d'attaque du sol
RU2698928C2 (ru) * 2014-12-03 2019-09-02 Кейтерпиллар Инк. Орудие для земляных работ
AU2015355305B2 (en) * 2014-12-03 2020-10-29 Caterpillar Inc. Ground engaging tool
WO2016135360A1 (fr) * 2015-02-23 2016-09-01 Metalogenia Research & Technologies S.L. Dispositif de fixation d'un élément d'usure ou de protection sur une pelle d'une machine de terrassement, et procédé de fixation et système d'usure ou de protection correspondants
RU2660825C1 (ru) * 2015-02-23 2018-07-10 Металохения Рисерч Энд Текнолоджиз С.Л. Устройство крепления изнашиваемого или защитного элемента к ковшу землеройной машины, соответствующий способ крепления и изнашиваемая или защитная система
US10246856B2 (en) 2015-02-23 2019-04-02 Metalogenia Research & Technologies S.L. Fixing device for fixing a wear or protection element on a bucket of an earth moving machine and corresponding fixing method and wear or protection system
CN108915001A (zh) * 2018-07-09 2018-11-30 成都工合科技有限公司 一种装载机前缘锁紧机构及装载机前缘
CN108915001B (zh) * 2018-07-09 2021-10-15 成都工合科技有限公司 一种装载机前缘锁紧机构及装载机前缘

Also Published As

Publication number Publication date
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