EP1984574A1 - Cantilever arm for a working machine - Google Patents
Cantilever arm for a working machineInfo
- Publication number
- EP1984574A1 EP1984574A1 EP06829677A EP06829677A EP1984574A1 EP 1984574 A1 EP1984574 A1 EP 1984574A1 EP 06829677 A EP06829677 A EP 06829677A EP 06829677 A EP06829677 A EP 06829677A EP 1984574 A1 EP1984574 A1 EP 1984574A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support arm
- plate
- shaped element
- arm according
- wall
- 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
- 238000005253 cladding Methods 0.000 claims abstract description 13
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000034 method Methods 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
- E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/301—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
-
- 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
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
Definitions
- the invention relates to a support arm for a work machine, such as boom or handle on the working equipment of an excavator, with at least one at least one plate-shaped element having wall.
- Support arms of different types, individually or in combination carry or move a working tool, a support or other components and with connect the work machine.
- These brackets of different length and shape are often hinged to each other, with the moving drives and connected to the machine, the working tool, the support or other components.
- the support arms are usually made of a box-like profile, which is formed by walls, such as upper and lower straps and side walls. On or in the walls receiving points for bolt bearings are welded, via which the support arms are connected to each other, the support arms with the drives, the support arms with the working machine and the support arms with the working tool, the support or other components.
- the walls are usually welded constructions, which are composed of sheets of homogeneous, but different thickness, with their contour along their length dimensioned adapted to the expected stresses.
- a welded profile for bucket and bucket equipment of an excavator in which the side walls having a uniform wall thickness are provided with upper and lower profile reinforced end portions forming the corner portions for the upper and lower belts disposed between the end portions , wherein the end regions are formed by separate metal sheets adapted to the respective contour of the equipment, which are connected by welding technology to the respective side walls which are thinner from the cross-section.
- the associated with the profile-reinforced end portions side walls are provided with bearings for receiving cylinder receiving points. Due to the necessity of the additional profile-reinforced end regions, such a profile is relatively expensive to manufacture.
- the object of the invention is to provide a support arm of the type described, which follows the expected component stresses to a high degree, has the lowest possible intrinsic mass and can be produced with the least possible effort.
- the at least one wall consists of a one-piece plate-shaped element, but in a further Embodiment, it is possible that the at least one wall comprises a plurality of plate-shaped elements which are welded together. It is preferred that the at least one plate-shaped element has a uniform wall thickness. In order to enable optimum adaptation to the expected component stresses, it is preferably provided that the respective plate-shaped element has a plurality of recesses, which can be freely designed depending on the expected load profile.
- a support arm is proposed with walls in the manner described above, which is adapted by the free formable (s) recess (s) to a large extent to the expected stress profile of the component.
- the recesses are accordingly provided in low stressed areas of the component. They can be easily incorporated into the plate-shaped element in a freely configurable form in terms of manufacturing technology. Due to the flat recesses, the net mass of the support arm is relatively low.
- the respective cladding element is circumferentially welded to the edge of the recess. Welding can be cost-effective and automated because the required weld size is small and each is a closed weld adapted to the contour of the recesses. Other joining techniques than welding are of course also possible.
- the at least one trim element can be arranged on the outside or inside of the plate-shaped element or else within the recess of the plate-shaped element.
- the support arm has a box-like profile with several walls, wherein at least one wall has a plate-shaped profile, which is made in the manner described above.
- the support arm can be part of a working equipment of a work machine and serve for the movement and for carrying a working tool.
- the support arm can also carry at least one support or other components.
- the support arm may be a boom or stick of an excavator, wherein the box-like profile of the support arm has a top flange, a bottom flange and side walls, and wherein at least one belt and / or at least one side wall has a plate-shaped element of the type described above.
- the contour of the side walls is dimensioned along its length in addition to the expected component stresses.
- the support arm may be arranged on the uppercarriage or undercarriage of the excavator.
- the upper and the lower flange are arranged between the side walls of the support arm.
- bearing points for cylinders and linkages are integrated into the side walls.
- FIG. 1 is a schematic diagram of a working machine in the form of an excavator
- FIG. 2 shows a perspective illustration of a support arm designed according to the invention and FIG Fig. 3 to 5 partial cross sections of the support arm of Figure 2 in different embodiments.
- FIG. 1 shows by way of example a working machine in the form of an excavator, generally designated 1 here.
- the inventive design of the support arm described below can generally be realized for any type of mobile or stationary machines; the excavator 1 shown in Figure 1 represents only one embodiment.
- the excavator 1 has an undercarriage 2 and a superstructure 3 and is provided with a trained as a spoon 4 working tool.
- This bucket 4 is connected to the excavator 1 via a work equipment consisting of a plurality of support arms 5, namely to the uppercarriage 3 thereof.
- Other support arms may be individually or in a plurality of course also connected to the undercarriage 2, which is not shown in detail.
- the individual support arms 5 of the working equipment of the excavator are connected by means of pin bearings 6 with each other and with these moving hydraulic cylinders 7 and with the superstructure 3 and with the spoon 4.
- the support arms 5 and thus the working tool, for example, the spoon 4 are brought into the respective desired working position.
- Each support arm 5 consists in these embodiments of a box-like profile with a top flange 8, a bottom flange 9 and two connected to the straps 8, 9 side 10. These side walls 10 are dimensioned from their outer contour along their length adapted to the expected component stresses.
- the respective side wall 10 consists of a plate-shaped element 11 having a uniform wall thickness, preferably a thick-walled plate, which has a plurality of planar recesses 12. These recesses 12 are different in shape, in such a way that their shape is adapted to the expected component stresses.
- the respective side wall 10 preferably consists of a one-piece plate-shaped element 11, but a division of the side wall 10 (with the same wall thickness) could be desirable for reasons of handling, but not because of adaptation to component stresses, if the length of the components becomes too large.
- the support arm 5 shown in Figure 2 represents only one embodiment, - the forms of the support arms 5 of course differ from each other, depending on the specific function of each support arm has (see different design of the support arms 5 in Figure 1).
- the walls consist of at least one plate-shaped element 11 with a uniform wall thickness having at least one recess 12, of which at least one recess is thin-walled with respect to the plate-shaped element 11.
- closed cladding sheet 14 (Fig. 3 to 5).
- the straps 8, 9 can consist of plate-shaped elements 11 with at least one recess 12 and at least one thin-walled lining panel 14.
- one or more of the recesses 12 are closed with a cladding element 14.
- This cladding element 14 preferably consists of a thin-walled metal sheet opposite the plate-shaped element 11 and can be adapted from its outer contour to the contour of the corresponding recesses 12 and preferably peripherally attached to the edge of the recesses 12, for example, welded.
- the cladding element 14 on the outside ( Figure 3), inside ( Figure 4) or within the contour of the recess ( Figure 5) can be arranged and fixed to the plate-shaped element 11.
- all recesses 12 may be provided with a cladding element 14 or only a few, at least one.
- These cladding elements 14 made of thin-walled sheet metal contribute only to a small extent to the load capacity of the support arm 5. They can be inexpensively and automatically fastened to the plate-shaped element 11 by means of thin, closed welds without complicated reworking.
- an inventive support arm 5 is not only suitable as part of Working equipment of an excavator, but basically for each arm of any machine. These brackets can be connected to any part of the machine and carry both tools, as well as supports or other components, even if they are not shown in the drawing. According to further embodiments of the invention, walls with plate-like elements of the type described above can also form a support arm without a box-like profile.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
- Body Structure For Vehicles (AREA)
- Jib Cranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006005892A DE102006005892A1 (en) | 2006-02-09 | 2006-02-09 | Support arm for a work machine |
PCT/EP2006/012150 WO2007090452A1 (en) | 2006-02-09 | 2006-12-16 | Cantilever arm for a working machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1984574A1 true EP1984574A1 (en) | 2008-10-29 |
EP1984574B1 EP1984574B1 (en) | 2016-03-23 |
Family
ID=37814186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06829677.1A Active EP1984574B1 (en) | 2006-02-09 | 2006-12-16 | Cantilever arm for a working machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090223093A1 (en) |
EP (1) | EP1984574B1 (en) |
JP (1) | JP5014354B2 (en) |
DE (1) | DE102006005892A1 (en) |
WO (1) | WO2007090452A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3336262A1 (en) * | 2016-12-16 | 2018-06-20 | J.C. Bamford Excavators Limited | Arm assembly |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202010003617U1 (en) * | 2009-06-19 | 2010-10-28 | Liebherr-Hydraulikbagger Gmbh | excavator boom |
JP5314625B2 (en) * | 2010-03-08 | 2013-10-16 | 日立建機株式会社 | Working arm for construction machinery |
JP5592994B2 (en) * | 2011-04-20 | 2014-09-17 | 日立建機株式会社 | Boom for construction machinery |
US9290363B2 (en) | 2011-07-21 | 2016-03-22 | Manitowoc Crane Companies, Llc | Tailor welded panel beam for construction machine and method of manufacturing |
US9200424B2 (en) * | 2011-09-20 | 2015-12-01 | Deere & Company | Boom apparatus with sandwiched knuckle body |
US9121163B2 (en) * | 2011-09-20 | 2015-09-01 | Deere & Company | Exoskeleton boom structure |
ITMI20120206A1 (en) * | 2012-02-14 | 2013-08-15 | Cifa Spa | SEGMENT OF AN ARTICULATED ARM AND ARTICULATED ARM INCLUDING THE SEGMENT |
CN102587669B (en) * | 2012-03-21 | 2015-02-18 | 中联重科股份有限公司 | Cantilever crane and pump truck |
US10362738B2 (en) * | 2015-09-10 | 2019-07-30 | Komatsu Ltd. | Work vehicle |
DE102016112748A1 (en) * | 2016-07-12 | 2018-01-18 | Schwing Gmbh | Large manipulator with weight-optimized articulated mast |
JP6917022B2 (en) * | 2017-01-31 | 2021-08-11 | 株式会社タグチ工業 | Construction machinery arm |
DE202017104032U1 (en) * | 2017-05-31 | 2018-09-18 | Liebherr-Werk Biberach Gmbh | Structure for a crane and similar machines, as well as a crane with such a structure |
Family Cites Families (27)
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US2048561A (en) * | 1936-07-21 | Dipper handle fob dredges | ||
US790478A (en) * | 1905-01-28 | 1905-05-23 | Vulcan Iron Works Company | Boom for excavators. |
US1688664A (en) * | 1926-08-18 | 1928-10-23 | Commw Steel | Dipper handle |
US1974458A (en) * | 1932-10-19 | 1934-09-25 | Gen Steel Castings Corp | Dipper handle |
US2446410A (en) * | 1943-11-27 | 1948-08-03 | Kibbey W Couse | Combination pry-and-boom structure |
US3055459A (en) * | 1956-01-23 | 1962-09-25 | Los Altos Engineering Co | Lifting equipment |
US3283464A (en) * | 1960-05-10 | 1966-11-08 | Litzka Franz | Honeycomb girders and method for making same |
US3493133A (en) * | 1967-11-15 | 1970-02-03 | Hydraulic Machinery Co Inc | Dipstick assembly |
US3572528A (en) * | 1969-05-14 | 1971-03-30 | Int Harvester Co | Uniform stress cantilever beam |
US3722864A (en) * | 1971-12-13 | 1973-03-27 | Caterpillar Tractor Co | Composite structural member |
US3890757A (en) * | 1974-02-28 | 1975-06-24 | Case Co J I | Boom members having stiffener elements for crane boom constructions |
US3902295A (en) * | 1974-05-28 | 1975-09-02 | Caterpillar Tractor Co | Boom construction and method for making same |
US4016688A (en) * | 1975-05-27 | 1977-04-12 | Fmc Corporation | Extensible crane boom structure |
US4003168A (en) * | 1975-06-27 | 1977-01-18 | Walter Kidde & Company, Inc. | Crane boom of trapezoidal boom sections having reinforcing rings |
US4147263A (en) * | 1977-01-06 | 1979-04-03 | Lull Engineering Company, Inc. | High lift loader with extended transfer |
US4111320A (en) * | 1977-03-23 | 1978-09-05 | The Warner & Swasey Company | Material handling apparatus having means for connecting material handling tool with a boom |
US4337601A (en) * | 1980-04-24 | 1982-07-06 | Harnischfeger Corporation | High-strength light-weight boom section for telescopic crane boom |
US5176491A (en) * | 1991-06-18 | 1993-01-05 | Case Corporation | Overcenter backhoe apparatus |
JP3109137B2 (en) * | 1991-06-26 | 2000-11-13 | 東レ株式会社 | Aromatic polyester composition |
JPH06220884A (en) * | 1993-01-21 | 1994-08-09 | Yanmar Diesel Engine Co Ltd | Boom structure for backhoe |
US5595471A (en) * | 1994-11-28 | 1997-01-21 | Caterpillar Inc. | Linkage arrangement |
US6106217A (en) * | 1998-08-14 | 2000-08-22 | Caterpillar Inc. | Lift arm arrangement of a construction machine |
JP3691750B2 (en) * | 2000-11-13 | 2005-09-07 | 株式会社クボタ | Swivel work machine |
DE10257041B3 (en) * | 2002-12-06 | 2004-08-19 | Terex Germany Gmbh & Co. Kg | Profile for backhoe bucket and bucket equipment of an excavator and method of manufacturing the same |
US6837446B1 (en) * | 2003-01-16 | 2005-01-04 | Sprayer Specialties, Inc. | Unitary boom structure |
JP4695355B2 (en) * | 2004-07-15 | 2011-06-08 | 新日本製鐵株式会社 | Boom / arm member for construction machine with excellent weld fatigue strength and method for manufacturing the same |
EP2118553A4 (en) * | 2007-02-09 | 2014-04-16 | Ind Origami Inc | Load-bearing three-dimensional structure |
-
2006
- 2006-02-09 DE DE102006005892A patent/DE102006005892A1/en not_active Withdrawn
- 2006-12-16 WO PCT/EP2006/012150 patent/WO2007090452A1/en active Application Filing
- 2006-12-16 JP JP2008553630A patent/JP5014354B2/en not_active Expired - Fee Related
- 2006-12-16 US US12/278,828 patent/US20090223093A1/en not_active Abandoned
- 2006-12-16 EP EP06829677.1A patent/EP1984574B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007090452A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3336262A1 (en) * | 2016-12-16 | 2018-06-20 | J.C. Bamford Excavators Limited | Arm assembly |
Also Published As
Publication number | Publication date |
---|---|
DE102006005892A1 (en) | 2007-08-23 |
WO2007090452A1 (en) | 2007-08-16 |
US20090223093A1 (en) | 2009-09-10 |
JP2009526148A (en) | 2009-07-16 |
EP1984574B1 (en) | 2016-03-23 |
JP5014354B2 (en) | 2012-08-29 |
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