CA2663881A1 - Wear assembly for an excavating bucket - Google Patents
Wear assembly for an excavating bucket Download PDFInfo
- Publication number
- CA2663881A1 CA2663881A1 CA002663881A CA2663881A CA2663881A1 CA 2663881 A1 CA2663881 A1 CA 2663881A1 CA 002663881 A CA002663881 A CA 002663881A CA 2663881 A CA2663881 A CA 2663881A CA 2663881 A1 CA2663881 A1 CA 2663881A1
- Authority
- CA
- Canada
- Prior art keywords
- wedge
- bucket
- leg
- accordance
- wear member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
-
- 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
- E02F9/2883—Wear elements for buckets or implements in general
Abstract
A wear assembly for protecting the digging edge of a bucket which includes a wear member having a lock-receiving hole in one ieg and an upstanding rib along the other leg. The rib extends axially along the leg to be received into a slot in a base fixed to the lip of the bucket. The rib has a rear end that engages the base to hold the rear end of the rib between the base and the lip. The wear member further includes an interior surface that has a front portion formed with a curve to wrap around the digging edge and a plurality of stabilizing surfaces. The lock has a latch and a threaded wedge received into the passage to move the latch to its holding position to maintain the lock in the assembly during use.
Claims (43)
1. A wear member for an excavating bucket comprising a front working end, a first leg and a second leg, each said leg extending rearwardly and having an inner surface facing toward the other leg, the legs defining a gap between the inner surfaces which is open laterally to receive a digging edge of an excavating bucket, the first leg including a hole for receiving a lock to secure the wear member to the bucket, and the second leg including a rib upstanding on the inner surface of the second leg that extends axially rearward along most of the second leg to be slidingly received into a slot of a base fixed to the bucket for support.
2. A wear member in accordance with claim 1 wherein the rib includes rails each with a holding surface that generally faces toward the inner surface of the second leg to engage complementary holding surfaces along the slot of the base.
3. A wear member in accordance with claim 2 wherein a rear end of the rib projects rearward of the second leg to engage a support surface of the base which holds the rear end of the rib between the support surface and the bucket for support of the wear member under load.
4. A wear member in accordance with claim 3 which includes an inner corner surface interconnecting the inner surfaces of the two legs to collectively define an interior surface of the wear member that is adapted to overlie the bucket, wherein the interior surface has a generally uniform curvature along the inner corner surface and a plurality of spaced apart stabilizing surfaces proximate the uniform curvature wherein each said stabilizing surface extends generally parallel to the inner surface of the second leg.
5. A wear member in accordance with claim 4 in which the inner corner surface includes a central portion and opposite side portions, wherein the central portion is recessed relative to the side portions and thereby defines sidewalls to oppose and contact side surfaces of the base for lateral support.
6. A wear member in accordance with claim 5 wherein one said stabilizing surface is formed along the central portion proximate each said side portion and proximate each said leg.
7. A wear member in accordance with claim 1 wherein a rear end of the rib projects rearward of the second leg to engage a support surface of a base fixed to the bucket which holds the rear end of the rib between the support surface and the bucket for support of the wear member under load.
8. A wear member in accordance with claim 1 which includes an inner corner surface interconnecting the inner surfaces of the two legs to collectively define an interior surface of the wear member that is adapted to overlie the bucket, wherein the interior surface has a generally uniform curvature along the inner corner surface and a plurality of spaced apart stabilizing surfaces proximate the uniform curvature, wherein each stabilizing surface extends generally parallel to the inner surface of the second leg.
9. A wear member for an excavating bucket comprising:
a front working end;
a pair of rearwardly extending legs defining a gap adapted to straddle the bucket along a digging edge, each said leg including an inner surface facing generally toward the other leg;
a hole for receiving a lock to secure the wear member to the bucket; and an axial rib upstanding on an inner surface of one of the legs, the rib having a rear end with a support surface free of the leg and facing away from the other leg to engage a holding surface of a base fixed to the bucket that holds the rear end of the rib between the holding surface and the bucket for support.
a front working end;
a pair of rearwardly extending legs defining a gap adapted to straddle the bucket along a digging edge, each said leg including an inner surface facing generally toward the other leg;
a hole for receiving a lock to secure the wear member to the bucket; and an axial rib upstanding on an inner surface of one of the legs, the rib having a rear end with a support surface free of the leg and facing away from the other leg to engage a holding surface of a base fixed to the bucket that holds the rear end of the rib between the holding surface and the bucket for support.
10. A wear member in accordance with claim 9 wherein the rear end of the rib extends rearward of the leg to which the rib is attached.
11. A wear member in accordance with claim 9 wherein the rib includes rails each with a holding surface that generally faces toward the inner surface of the leg from which the rib extends to engage complementary holding surfaces on a base fixed to the bucket facing in an opposite direction.
12. A wear member in accordance with claim 9 which includes an inner corner surface interconnecting the inner surfaces of the two legs to collectively define an interior surface adapted to overlie the bucket, wherein the interior surface has a generally uniform curvature along the inner corner surface and a plurality of spaced apart stabilizing surfaces proximate the uniform curvature, wherein each said stabilizing surface extends generally parallel to the inner surface of the leg with the rib.
13. A wear member for an excavating bucket comprising:
a front working end;
a pair of rearwardly extending legs defining a gap adapted to straddle the bucket along a digging edge;
a hole for receiving a lock to secure the wear member to the bucket; and an interior surface adapted to face and overlie the bucket, the interior surface including a front portion having a generally uniform curvature to wrap around the digging edge of the bucket and a plurality of spaced apart stabilizing surfaces wherein each stabilizing surface extends generally parallel to an outer side surface of the bucket along the digging edge received into the gap.
a front working end;
a pair of rearwardly extending legs defining a gap adapted to straddle the bucket along a digging edge;
a hole for receiving a lock to secure the wear member to the bucket; and an interior surface adapted to face and overlie the bucket, the interior surface including a front portion having a generally uniform curvature to wrap around the digging edge of the bucket and a plurality of spaced apart stabilizing surfaces wherein each stabilizing surface extends generally parallel to an outer side surface of the bucket along the digging edge received into the gap.
14. A wear member in accordance with claim 13 in which the front portion of the interior surface includes a central portion and opposite side portions, wherein the central portion is recessed relative to the side portions to thereby define sidewalls to oppose and contact side surfaces of the base for lateral support.
15. A wear member in accordance with claim 14 wherein one said stabilizing surface is formed along the central portion proximate each said side portion.
16. A wear assembly for an excavating bucket comprising:
a base fixed to the bucket, the base including a front surface and an axial slot having an inlet end that opens in the front surface;
a wear member including a front working end, a first leg and a second leg, each said leg extending rearwardly and having an inner surface facing toward the other leg, the legs defining a gap between the inner surfaces adapted to receive a digging edge of the bucket, the first leg including a hole and the second leg including a rib upstanding on the inner surface of the second leg that extends axially rearward along most of the second leg and is slidingly received into the slot on the base through the open inlet end; and a lock received in the hole in the wear member to secure the wear member to the bucket.
a base fixed to the bucket, the base including a front surface and an axial slot having an inlet end that opens in the front surface;
a wear member including a front working end, a first leg and a second leg, each said leg extending rearwardly and having an inner surface facing toward the other leg, the legs defining a gap between the inner surfaces adapted to receive a digging edge of the bucket, the first leg including a hole and the second leg including a rib upstanding on the inner surface of the second leg that extends axially rearward along most of the second leg and is slidingly received into the slot on the base through the open inlet end; and a lock received in the hole in the wear member to secure the wear member to the bucket.
17. A wear assembly in accordance with claim 16 in which the rib and the slot each includes rails that engage each other such that the rails of the slot hold the rib between the base and the bucket.
18. A wear assembly in accordance with claim 17 wherein the base includes a support surface facing toward the bucket, and the rib includes a rear end that projects rearward of the second leg to engage the support surface which holds the rear end of the rib between the support surface and the bucket for support of the wear member under load.
19. A wear assembly in accordance with claim 16 wherein a rear end of the rib projects rearward of the second leg to engage a support surface of a base fixed to the bucket to hold the rear end of the rib between the support surface and the bucket for support of the wear member under load.
20. A wear assembly in accordance with claim 16 which includes an inner corner surface interconnecting the inner surfaces of the two legs to collectively define an interior surface adapted to overlie the bucket, wherein the interior surface has a generally uniform curvature along the inner corner surface and a plurality of spaced apart stabilizing surfaces proximate the uniform curvature, wherein each said stabilizing surfaces extends generally parallel to the inner surface of the second leg.
21. A wear assembly for an excavating bucket comprising:
a base fixed to the bucket, the base including a front surface having a generally uniform curved shape and a plurality of stabilizing surfaces;
a wear member including (i) a front working end, (ii) a pair of rearwardly extending legs defining a gap adapted to straddle the bucket along a digging edge, (iii) a hole, and (iv) an interior surface adapted to face and overlie the bucket, the interior surface including a front surface having a generally uniform curvature to wrap around the digging edge of the bucket and bear against the front surface of the base, and a plurality of spaced apart stabilizing surfaces, wherein each stabilizing surface of the wear member and the base extends generally parallel to an outer side surface of the bucket along the digging edge received into the gap; and a lock received in the hole in the wear member to secure the wear member to the bucket.
a base fixed to the bucket, the base including a front surface having a generally uniform curved shape and a plurality of stabilizing surfaces;
a wear member including (i) a front working end, (ii) a pair of rearwardly extending legs defining a gap adapted to straddle the bucket along a digging edge, (iii) a hole, and (iv) an interior surface adapted to face and overlie the bucket, the interior surface including a front surface having a generally uniform curvature to wrap around the digging edge of the bucket and bear against the front surface of the base, and a plurality of spaced apart stabilizing surfaces, wherein each stabilizing surface of the wear member and the base extends generally parallel to an outer side surface of the bucket along the digging edge received into the gap; and a lock received in the hole in the wear member to secure the wear member to the bucket.
22. A wear assembly in accordance with claim 21 in which the front portion of the interior surface includes a central portion and opposite side portions, wherein the central portion is recessed relative to the side portions to thereby define sidewalls to oppose and contact side surfaces of the base for lateral support.
23. A wear assembly in accordance with claim 22 wherein one said stabilizing surface is formed along the central portion proximate each said side portion.
24. A wear assembly for a lip of an excavating bucket comprising a base fixed to the lip and including a first bearing surface a wear member including a front working portion and a rear mounting portion, the rear mounting portion including a second bearing surface and a lock to be received between the first and second bearing surfaces to secure the wear member to the lip, the lock including a body having a passage with an open inlet end, a latch attached to the body for movement between a holding position and a release position, and a wedge having a leading end and a trailing end, the wedge tapering toward the leading end and being movably received into the passage of the body through the inlet end, the wedge engaging the latch to move the latch from the release position to the holding position as the leading end of the wedge is moved farther into the passage away from the inlet end.
25. A wear assembly in accordance with claim 24 wherein the passage in the body includes a first thread formation and the wedge includes a second thread formation that engages the first thread formation, wherein the wedge is rotated to move the wedge in the passage.
26. A wear assembly in accordance with claim 25 wherein the second thread formation is formed by a helical groove on the wedge.
27. A wear assembly in accordance with claim 26 wherein a resilient material is provided within the helical groove to engage the first thread formation and resist loosening of the wedge.
28. A wear assembly in accordance with claim 24 wherein the trailing end of the wedge includes a tool-engaging formation for engaging a tool to rotate the wedge.
29. A wear assembly in accordance with claim 24 wherein the latch is pivotally secured to the body.
30. A wear assembly in accordance with claim 29 wherein the latch includes a resilient retainer that engages the wedge to resist loosening of the wedge.
31. A lock for securing a wear member to excavating equipment comprising a body including a passage with an open inlet end, a latch attached to the body for movement between a holding position and a release position, and a wedge having a leading end and a trailing end, the wedge tapering toward the leading end and being movably received into the passage of the body through the inlet end, the wedge engaging the latch to move the latch from the release position to the holding position as the leading end of the wedge is moved farther into the passage away from the inlet end.
32. A lock in accordance with claim 31 wherein the passage includes a first thread formation and the wedge includes a second thread formation that engages the first thread formation, and wherein the wedge is rotated to move the wedge in the passage.
33. A lock in accordance with claim 32 wherein the second thread formation is formed by a helical groove on the wedge.
34. A lock in accordance with claim 33 wherein a resilient material is provided within the helical groove to engage the first thread formation and resist loosening of the wedge.
35. A lock in accordance with claim 31 wherein the trailing end of the wedge includes a tool-engaging formation for engaging a tool to rotate the wedge.
36. A lock in accordance with claim 31 wherein the latch is pivotally secured to the body.
37. A lock in accordance with claim 36 wherein the latch includes a resilient retainer that engages the wedge to resist loosening of the wedge.
38. A lock for securing a wear member to excavating equipment comprising:
a body including a passage with an open inlet end and at least one helical ridge segment;
a wedge axially received into the passage of the body through the inlet end, the wedge having (i) a leading end and a trailing end and tapering toward the leading end, (ii) a helical groove engaging the helical ridge segment in the passage, and (iii) a tool-engaging formation for rotating the wedge in the passage to axially move the wedge in the passage by the engagement of the groove and the ridge; and a latch pivotally attached to the body for movement between a holding position and a release position, the latch having a front surface with a projection for engaging a stop on the wear member to hold the lock in place during use and a rear surface to engage the wedge and be pressed by the wedge into the holding position.
a body including a passage with an open inlet end and at least one helical ridge segment;
a wedge axially received into the passage of the body through the inlet end, the wedge having (i) a leading end and a trailing end and tapering toward the leading end, (ii) a helical groove engaging the helical ridge segment in the passage, and (iii) a tool-engaging formation for rotating the wedge in the passage to axially move the wedge in the passage by the engagement of the groove and the ridge; and a latch pivotally attached to the body for movement between a holding position and a release position, the latch having a front surface with a projection for engaging a stop on the wear member to hold the lock in place during use and a rear surface to engage the wedge and be pressed by the wedge into the holding position.
39. A lock in accordance with claim 38 wherein the wedge further includes a resilient material in the helical groove to engage the helical ridge segment and resist loosening of the wedge.
40. A lock in accordance with claim 38 wherein the latch includes a resilient retainer that engages the wedge to resist loosening of the wedge.
41. A lock in accordance with claim 38 wherein the rear surface of the latch includes a recess into which the wedge is received.
42. A wedge comprising a leading end and a trailing end and tapering toward the leading end, a rounded exterior surface provided with a helical groove that encircles the wedge to define a thread formation, a resilient material fixed within the helical groove, and a tool-engaging formation for rotating the wedge.
43. A wedge in accordance with claim 42 wherein the resilient material is a strip extending along substantially the entire length of the groove.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85390806P | 2006-10-24 | 2006-10-24 | |
| US60/853,908 | 2006-10-24 | ||
| PCT/US2007/082218 WO2008051966A2 (en) | 2006-10-24 | 2007-10-23 | Wear assembly for an excavating bucket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2663881A1 true CA2663881A1 (en) | 2008-05-02 |
| CA2663881C CA2663881C (en) | 2012-08-07 |
Family
ID=39325334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2663881A Expired - Fee Related CA2663881C (en) | 2006-10-24 | 2007-10-23 | Wear assembly for an excavating bucket |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP2076633B1 (en) |
| CN (1) | CN101529023B (en) |
| AU (1) | AU2007309015B2 (en) |
| BR (1) | BRPI0717340B1 (en) |
| CA (1) | CA2663881C (en) |
| CL (1) | CL2007003063A1 (en) |
| ES (1) | ES2611991T3 (en) |
| HK (1) | HK1131647A1 (en) |
| NZ (1) | NZ575959A (en) |
| PE (1) | PE20081127A1 (en) |
| PL (1) | PL2076633T3 (en) |
| PT (1) | PT2076633T (en) |
| WO (1) | WO2008051966A2 (en) |
| ZA (1) | ZA200902334B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102686810B (en) * | 2009-10-30 | 2015-07-08 | 爱斯科公司 | Wear assembly for excavating equipment |
| EP2783052B1 (en) * | 2011-11-23 | 2021-01-06 | ESCO Group LLC | Wear assembly |
| PE20141852A1 (en) * | 2012-02-17 | 2014-12-08 | Esco Corp | WEAR SET |
| US8819967B2 (en) * | 2012-03-21 | 2014-09-02 | Hensley Industries, Inc. | Adapter stabilization structure for bucket lip |
| US9903101B2 (en) * | 2014-12-05 | 2018-02-27 | Caterpillar Inc. | Replaceable shroud for work implement |
| USD769945S1 (en) | 2014-12-05 | 2016-10-25 | Caterpillar Inc. | Sidebar protector |
| US9493926B2 (en) * | 2015-02-02 | 2016-11-15 | Caterpillar Inc. | Pin assembly for work implement coupling assembly having float and lock positions |
| WO2016130135A1 (en) | 2015-02-13 | 2016-08-18 | Black Cat Blades Ltd. | Wear members for excavation implements |
| USD788826S1 (en) | 2016-02-09 | 2017-06-06 | Caterpillar Inc. | Sidebar protector |
| SI3452664T1 (en) * | 2016-05-05 | 2022-04-29 | Esco Group Llc | A wear part for earth working equipment |
| US10480162B2 (en) * | 2016-12-15 | 2019-11-19 | Caterpillar Inc. | Implement ground engaging tip assembly having tip with tapered retention channel |
| CN107386348B (en) * | 2017-08-22 | 2020-05-19 | 瑞安市佰德装饰工程有限公司 | Excavator bucket driven by arc-shaped rail and capable of adjusting soil excavation direction |
| USD882646S1 (en) | 2018-11-09 | 2020-04-28 | Caterpillar Inc. | Bucket shroud |
| BR112023025976A2 (en) * | 2021-06-09 | 2024-02-27 | Bradken Resources Pty Ltd | WEAR ASSEMBLY |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2395288A (en) * | 1943-06-30 | 1946-02-19 | Frank W Thomas | Inserted blade cutter |
| US2435287A (en) * | 1944-05-12 | 1948-02-03 | Robert W Thomas | Cutting tool |
| US4570365A (en) | 1983-11-23 | 1986-02-18 | Bierwith Robert S | Digging tooth and bucket lip construction |
| US5088214A (en) | 1991-01-17 | 1992-02-18 | Esco Corporation | Excavator wear edge |
| US5311681A (en) * | 1992-04-08 | 1994-05-17 | Gh Hensley Industries, Inc. | Retaining mechanism |
| CN2286204Y (en) * | 1997-01-21 | 1998-07-15 | 湘潭电气设备制造有限责任公司 | Protector for rotating mechanism of dredger |
| AUPO657997A0 (en) * | 1997-05-02 | 1997-05-29 | Hedweld Engineering Pty. Ltd. | A tooth wedge assembly |
| AUPO842697A0 (en) * | 1997-08-06 | 1997-08-28 | Cutting Edges Replacement Parts Pty Ltd | Connection pin assembly |
| US6108950A (en) * | 1999-03-08 | 2000-08-29 | Gh Hensley Industries, Inc. | Self-adjusting tooth/adapter connection system for material displacement apparatus |
| US6729052B2 (en) * | 2001-11-09 | 2004-05-04 | Esco Corporation | Assembly for securing an excavating tooth |
| US7171771B2 (en) * | 2003-04-30 | 2007-02-06 | Esco Corporation | Releasable coupling assembly |
| US7080470B2 (en) * | 2003-04-30 | 2006-07-25 | Esco Corporation | Wear assembly for excavator digging edge |
-
2007
- 2007-10-23 ES ES07854338.6T patent/ES2611991T3/en active Active
- 2007-10-23 CN CN200780039098XA patent/CN101529023B/en not_active Expired - Fee Related
- 2007-10-23 PE PE2007001434A patent/PE20081127A1/en active IP Right Grant
- 2007-10-23 WO PCT/US2007/082218 patent/WO2008051966A2/en active Application Filing
- 2007-10-23 NZ NZ575959A patent/NZ575959A/en not_active IP Right Cessation
- 2007-10-23 AU AU2007309015A patent/AU2007309015B2/en not_active Ceased
- 2007-10-23 PL PL07854338T patent/PL2076633T3/en unknown
- 2007-10-23 EP EP07854338.6A patent/EP2076633B1/en active Active
- 2007-10-23 BR BRPI0717340-7A patent/BRPI0717340B1/en not_active IP Right Cessation
- 2007-10-23 CA CA2663881A patent/CA2663881C/en not_active Expired - Fee Related
- 2007-10-23 PT PT78543386T patent/PT2076633T/en unknown
- 2007-10-24 CL CL200703063A patent/CL2007003063A1/en unknown
-
2009
- 2009-04-03 ZA ZA200902334A patent/ZA200902334B/en unknown
- 2009-11-30 HK HK09111191.5A patent/HK1131647A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0717340A2 (en) | 2013-12-10 |
| EP2076633B1 (en) | 2016-12-07 |
| NZ575959A (en) | 2011-06-30 |
| ZA200902334B (en) | 2010-04-28 |
| WO2008051966A2 (en) | 2008-05-02 |
| PL2076633T3 (en) | 2017-06-30 |
| EP2076633A4 (en) | 2014-05-07 |
| BRPI0717340B1 (en) | 2017-12-19 |
| ES2611991T3 (en) | 2017-05-11 |
| CN101529023A (en) | 2009-09-09 |
| PE20081127A1 (en) | 2008-08-15 |
| EP2076633A2 (en) | 2009-07-08 |
| AU2007309015A1 (en) | 2008-05-02 |
| PT2076633T (en) | 2017-01-31 |
| CL2007003063A1 (en) | 2008-05-16 |
| CA2663881C (en) | 2012-08-07 |
| WO2008051966A3 (en) | 2008-11-06 |
| AU2007309015B2 (en) | 2010-12-16 |
| CN101529023B (en) | 2012-03-07 |
| HK1131647A1 (en) | 2010-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20211025 |