WO2003078745A1 - Bucket - Google Patents
Bucket Download PDFInfo
- Publication number
- WO2003078745A1 WO2003078745A1 PCT/SE2003/000412 SE0300412W WO03078745A1 WO 2003078745 A1 WO2003078745 A1 WO 2003078745A1 SE 0300412 W SE0300412 W SE 0300412W WO 03078745 A1 WO03078745 A1 WO 03078745A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bucket
- connector
- roof
- per
- sidewalls
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 14
- 210000002105 tongue Anatomy 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000000969 carrier Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
Definitions
- the present invention is based on a design feature for an excavator bucket or earth mover bucket (these and all other such buckets being hereinafter referred to as bucket), i.e. a piece of equipment that, mounted on an excavator, earth mover or similar (hereinafter referred to as carrier), is used for excavating and/or moving a range of materials, e.g. soil, clay, gravel, stones, etc. (hereinafter referred to as excavated material).
- carrier a design feature for an excavator bucket or earth mover bucket
- carrier i.e. a piece of equipment that, mounted on an excavator, earth mover or similar
- excavated material e.g. soil, clay, gravel, stones, etc.
- Carriers with the type of bucket here envisaged can be found in sizes of from less than one ton up to several hundred tons (machine weight).
- buckets are available in a range of formats and sizes.
- This box structure has to be strong enough to fulfil its purpose without mechanical failure. It must be resilient, i.e. in each work cycle it must be able to accept deformation and then return to its original shape without cracking or breaking. This applies especially to the bucket opening's two upper corners formed where the bucket attaches to its carrier (i.e. the roof) and the bucket's vertical sides. At the same time, because unnecessary weight leads to a reciprocal reduction in carrier capacity, the bucket should be as light as possible.
- a further criterion common to all these buckets is that they should offer the greatest possible resistance to the wear occasioned by use.
- various high-strength and wear- resistant steels are used, their individual properties being matched to the intended use.
- Detachable or welded-in components of cast steel, or welded-in components of other materials may be used where the structure is subjected to the greatest wear.
- Buckets should also be easy to fill and empty.
- no excavated material should remain in the bucket after emptying. This is achieved by giving the structure as smooth an interior as possible. Edges or pockets that could prevent material leaving the bucket must be avoided whenever possible.
- bucket design is critical not only for bucket function but also for carrier efficiency.
- Figure 1 - a typical, present-day bucket
- FIG. 1 shows a typical, present-day bucket with internal stiffeners.
- the roof (2) incorporates a beam-like element.
- a prefabricated steel tube is used as the beam element.
- This tubular beam (5) is welded to the roof (2), the sides of the structure (3) and the side cutters (4). The latter are, in their turn, welded to the bucket bottom (6) and the cutter (7).
- this design has a weakness in the corners (8) between the beam and the sides. The weakness is that the welds between the inelastic beam element, the tubular beam (5), and the relatively thin side cutters (4) tend to crack if there is internal movement in the design.
- stiffeners (9) can be welded internally in the bucket corners (8) between the beam element (5) and the side cutters (4). These measures overcome the cracking problem.
- thicker side cutters increase bucket weight and reduce penetration in the material being excavated.
- internal stiffeners (9) present prominent edges and pockets to the excavated material. This inhibits loading and creates even more severe problems when unloading. The latter are particularly marked with moist excavated material, but even blasted rock can adhere to, or get jammed in, the bucket.
- Figure 2 shows a bucket of the same type as in figure 1 , but constructed with external beam stiffeners as per the present invention.
- the roof (10) incorporates a beam-like element.
- a prefabricated steel tube is used as the beam element.
- This tubular beam (13) is welded to the roof (10), the sides of the structure (11 ) and the side cutters (12). The latter are, in their turn, welded to the bucket bottom (14) and the cutter (15).
- the beam stiffeners (1 ) which are located on the outside of the bucket, are welded to the side cutters (12) and the tubular beam (13).
- the tubular beam passes through, and is encircled by, the beam stiffeners (1 ).
- the tongue- shaped part (1 a) of each beam stiffener (1 ) is welded fast and points downwards to the bucket bottom.
- the invention ensures a controlled transmission of stresses and movement between the beam and the bucket sides. This is achieved by the tongues of the beam stiffeners allowing resilience in the structure and progressively taking up the lateral movements hinted at above. This reduces the stresses on the welds in the bucket corners (16) to a safe level.
- the external beam stiffener solution gives a bucket interior completely free of any projections. Excavated material is thus given minimum opportunity to lodge in the bucket at loading and unloading.
- the external placement of the beam stiffeners eliminates, as far as is possible, harmful wear and/or deformation of said stiffeners.
- the invention enables improved use of modern, high-strength steels. By avoiding over-dimensioning, the weight and penetration (when excavating) of any given bucket can be, respectively, decreased and improved without negatively affecting strength.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT03708788T ATE480673T1 (en) | 2002-03-18 | 2003-03-13 | BUCKET FOR EXCAVATOR |
AU2003212759A AU2003212759A1 (en) | 2002-03-18 | 2003-03-13 | Bucket |
CA002479001A CA2479001A1 (en) | 2002-03-18 | 2003-03-13 | Bucket |
EP03708788A EP1495192B1 (en) | 2002-03-18 | 2003-03-13 | Excavator bucket |
DE60334088T DE60334088D1 (en) | 2002-03-18 | 2003-03-13 | BUCKET FOR BAGGER |
NO20043966A NO20043966L (en) | 2002-03-18 | 2004-09-22 | drawer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0200830A SE525518C2 (en) | 2002-03-18 | 2002-03-18 | Beam reinforcement on excavator bucket |
SE0200830-8 | 2002-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003078745A1 true WO2003078745A1 (en) | 2003-09-25 |
Family
ID=20287316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2003/000412 WO2003078745A1 (en) | 2002-03-18 | 2003-03-13 | Bucket |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1495192B1 (en) |
AT (1) | ATE480673T1 (en) |
AU (1) | AU2003212759A1 (en) |
CA (1) | CA2479001A1 (en) |
DE (1) | DE60334088D1 (en) |
NO (1) | NO20043966L (en) |
SE (1) | SE525518C2 (en) |
WO (1) | WO2003078745A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2636801A1 (en) * | 2012-03-08 | 2013-09-11 | EJ Romac | Bucket for power shovel |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1209995A (en) * | 1967-06-22 | 1970-10-28 | Caterpillar Tractor Co | A tractor-mounted bucket loader |
GB1593452A (en) * | 1977-01-21 | 1981-07-15 | Ardennes Equip | Mechanical shovel bucket |
US4890400A (en) * | 1988-10-27 | 1990-01-02 | Long Jeffrey D | Bucket attachment for tractor blade |
-
2002
- 2002-03-18 SE SE0200830A patent/SE525518C2/en not_active IP Right Cessation
-
2003
- 2003-03-13 CA CA002479001A patent/CA2479001A1/en not_active Abandoned
- 2003-03-13 AT AT03708788T patent/ATE480673T1/en not_active IP Right Cessation
- 2003-03-13 WO PCT/SE2003/000412 patent/WO2003078745A1/en not_active Application Discontinuation
- 2003-03-13 EP EP03708788A patent/EP1495192B1/en not_active Expired - Lifetime
- 2003-03-13 DE DE60334088T patent/DE60334088D1/en not_active Expired - Lifetime
- 2003-03-13 AU AU2003212759A patent/AU2003212759A1/en not_active Abandoned
-
2004
- 2004-09-22 NO NO20043966A patent/NO20043966L/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1209995A (en) * | 1967-06-22 | 1970-10-28 | Caterpillar Tractor Co | A tractor-mounted bucket loader |
GB1593452A (en) * | 1977-01-21 | 1981-07-15 | Ardennes Equip | Mechanical shovel bucket |
US4890400A (en) * | 1988-10-27 | 1990-01-02 | Long Jeffrey D | Bucket attachment for tractor blade |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2636801A1 (en) * | 2012-03-08 | 2013-09-11 | EJ Romac | Bucket for power shovel |
Also Published As
Publication number | Publication date |
---|---|
DE60334088D1 (en) | 2010-10-21 |
CA2479001A1 (en) | 2003-09-25 |
EP1495192B1 (en) | 2010-09-08 |
AU2003212759A1 (en) | 2003-09-29 |
NO20043966L (en) | 2004-09-22 |
EP1495192A1 (en) | 2005-01-12 |
SE0200830L (en) | 2003-09-19 |
ATE480673T1 (en) | 2010-09-15 |
SE0200830D0 (en) | 2002-03-18 |
SE525518C2 (en) | 2005-03-01 |
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