EP1452650A1 - Lame nivelleuse orientable pour mini-excavateurs - Google Patents
Lame nivelleuse orientable pour mini-excavateurs Download PDFInfo
- Publication number
- EP1452650A1 EP1452650A1 EP03425125A EP03425125A EP1452650A1 EP 1452650 A1 EP1452650 A1 EP 1452650A1 EP 03425125 A EP03425125 A EP 03425125A EP 03425125 A EP03425125 A EP 03425125A EP 1452650 A1 EP1452650 A1 EP 1452650A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- holes
- support frame
- revolving
- side members
- 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
Images
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
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
- E02F3/8152—Attachments therefor, e.g. wear resisting parts, cutting edges
-
- 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
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7609—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers
- E02F3/7613—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers with the scraper blade adjustable relative to the pivoting arms about a vertical axis, e.g. angle dozers
Definitions
- the present invention relates to excavators - self-moving machines with wheels, tracks or articulated supports, provided with an upper structure or turret, normally apt to rotate by 360° and supporting an excavating boom, and mainly designed to excavate with a shovel or a bucket, while remaining stationary - and concerns, more particularly, a revolving blade for compact or small excavators (excavators with an operative mass below 6,000 Kg).
- scraper front stabilizing blade
- the functions carried out by the scraper are essentially two: the first (and most important) is to provide for a stabilizing action for the small excavator during excavation or load lifting (so as to avoid the problems deriving from its reduced size and reduced weight), the second function is its use in refilling and resetting actions by operating a double-acting cylinder.
- the high limit of conventional scrapers in small excavators is to have a fixed profile; thus, when having to close an excavation, the operator is forced to perform various maneuvers with the bottom car of the machine to successfully complete the operation, or else - when the excavation sites are close to roads - he is forced to close the excavation with the bucket, unless wishing to occupy the entire lane with the machine.
- the object of the present invention is to overcome or at least reduce such drawbacks in small excavators, while maintaining the characteristics of slenderness, maneuverability and simplicity typical of these machines, without making the construction more difficult and/or increasing the costs in a significant way.
- This purpose is achieved by equipping small excavators with a revolving blade of simple structure and easy to maneuver, which forms the object of the present invention.
- the revolving blade according to the present invention comprises a support frame and a blade unit, and is characterized in that the support frame consists of two side members and at least one cross member; in that the blade unit with the actual blade comprises a U-shaped support, on each of the arms of which a plurality of holes are formed, distributed along a circle arc, two similar holes being formed at the outer ends of the side members of the support frame; and in that the blade unit is apt to be connected to the support frame in a plurality of differently oriented positions, by inserting a couple of pins in said two holes of the frame side members and in holes of said U-shaped support, brought in alignment with the first ones.
- said holes in the side members of the support frame are formed in correspondence of said cross member.
- Figs. 1 and 2 are a side view and a top view of a small excavator equipped with a conventional fixed blade or scraper;
- Fig. 3 is a general perspective view of the revolving blade according to the present invention.
- Figs. 4 and 5 are, respectively, a top view and a side view, on a larger scale, of the revolving blade shown in fig. 3;
- Figs. 6 and 7 are two perspective views, a front view and respectively a rear view, with disassembled parts, of the revolving blade according to the invention shown in Figs. 3 to 5;
- Figs. 8 and 9 are a side view and a top view of a small excavator equipped with the revolving blade of Figs. 3 to 7, oriented with an inclination towards the right side of the machine;
- Fig. 10 is a top view, similar to that of Fig. 8, of a small excavator equipped with the revolving blade of Figs. 3 to 7, in which the blade is shown not inclined and with the extensions mounted on the inside.
- the small excavators of prior art provided with a turret T rotatably mounted on a bottom car S with tracks C, are equipped - as well as with an excavating boom BE ending with a bucket B, carried by the turret T - with a fixed blade or scraper R carried on the front of the bottom car S.
- the revolving blade L comprises a support frame 1, with two side members 2 and at least one cross member 3, and a blade unit 4, with an actual blade 5 and a U-shaped support 6 for said blade.
- the support frame 1 comprises, at the free ends of the side members 2, ears 2A for hingeing onto the bottom car S of the small excavator and usually includes a second cross member 3A for connection to a cylinder-piston unit of the small excavator, which controls the vertical movement of the frame itself and thus of the revolving blade L.
- the four arms 7 of the U-shaped support 6 each have three holes 8, formed along circle arcs whose center (Fig. 4) corresponds to the outermost hole 8 closer to the blade 5 of the opposite boom 7, while two holes 9 (Figs. 5 and 6) are provided at the outer ends of the side members 2 of the frame 1, where they connect to the cross member 3.
- Stout pins 10, equipped with comfortable gripping and operating handles 11, allow to connect the blade 5 to the frame 1 in different positions (see Fig. 4), after having aligned each hole 9 of the side members 2 with a pair - selected according to the orientation one wishes to give to the revolving blade L - of holes 8 of the arms 7 of the support 6, by inserting therein the pins 10.
- These pins 10 have the double function of fulcrum for the rotation to orient and block the support 6 in an angular position, or in a normal position.
- the revolving blade L according to the invention is completed by providing two extensions 12, apt to be mounted on both sides of said blade (or both on the same side, one next to the other), to allow the track of the small excavator, when the blade L is mounted, to keep away from the trench (and thus in safe working conditions) during the reclosing step.
- the two extensions 12, when not used, can be housed within the side-play of the central blade, as shown in Figure 10.
- the revolving blade L according to the present invention can be very easily oriented both towards the right and towards the left. To orient the blade towards the right (see Figs. 8 and 9) it is sufficient - starting from the normal, straight position of Fig. 4 - to remove the left pin 10, to rotate the blade in respect of the right pin 10 (left in its place) and to reset the left pin 10 in the wanted position. To orient the blade towards the left (not shown) one proceeds as above, but inverting the pins.
- the particular configuration of the revolving blade according to the present invention and its operating principle allow to maintain the same forward projection of the blade profile, without having to use a particularly large blade which would thus limit the excavating potential.
- the stabilizing function of the revolving blade according to the present invention remains unvaried in respect of the function of a conventional fixed blade since, with the blade in a lowered position, the rotation of the front blade unit occurs around pins perpendicular to the ground, allowing the lower profile of the blade to remain parallel to the soil, by resting on its entire length and thus ensuring steadiness.
- the revolving blade according to the present invention introduces, in respect of prior art, the considerable advantage of allowing small excavators to refill trenches, or to level soils and roadbeds, or to remove snow or debris from streets and squares, through the normal rectilinear translation of the excavator (i.e. without being forced to perform continuous back and forth maneuvers, as it happened up-to-date with these machines, making use of a conventional fixed blade).
- the invention also comprises small excavators equipped with a revolving blade as described and illustrated hereabove.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Road Repair (AREA)
- Operation Control Of Excavators (AREA)
- Shovels (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT03425125T ATE338171T1 (de) | 2003-02-27 | 2003-02-27 | Drehbares planierschild und aufhängung für minibagger |
DE60307977T DE60307977D1 (de) | 2003-02-27 | 2003-02-27 | Drehbares Planierschild und Aufhängung für Minibagger |
EP03425125A EP1452650B1 (fr) | 2003-02-27 | 2003-02-27 | Lame nivelleuse orientable et montage pour mini-excavateurs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03425125A EP1452650B1 (fr) | 2003-02-27 | 2003-02-27 | Lame nivelleuse orientable et montage pour mini-excavateurs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1452650A1 true EP1452650A1 (fr) | 2004-09-01 |
EP1452650B1 EP1452650B1 (fr) | 2006-08-30 |
Family
ID=32749051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03425125A Expired - Lifetime EP1452650B1 (fr) | 2003-02-27 | 2003-02-27 | Lame nivelleuse orientable et montage pour mini-excavateurs |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1452650B1 (fr) |
AT (1) | ATE338171T1 (fr) |
DE (1) | DE60307977D1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007064700A1 (fr) * | 2005-12-02 | 2007-06-07 | Clark Equipment Company | Interface d'outil pour excavateur compact |
DE202014102267U1 (de) | 2014-05-14 | 2014-06-06 | Buchen Umweltservice Gmbh | MHM-Drehmotor |
JP2020033749A (ja) * | 2018-08-29 | 2020-03-05 | 株式会社日立建機ティエラ | 建設機械の排土装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629946A (en) * | 1947-06-06 | 1953-03-03 | Mitchell H Ewers | Grading or dozing device |
US4081092A (en) * | 1975-10-17 | 1978-03-28 | Zimmerman Emil F | Tractor with lifting mechanism for mounting a bulldozer blade or the like |
US4479312A (en) * | 1983-04-11 | 1984-10-30 | Valley Engineering, Inc. | Foldable snow compactor with side wings pivotable behind central blade |
JPH07189286A (ja) * | 1993-12-28 | 1995-07-28 | Kubota Corp | ドーザ装置 |
JPH0849224A (ja) * | 1994-08-05 | 1996-02-20 | Kawasaki Heavy Ind Ltd | 除雪装置 |
WO1999050509A1 (fr) * | 1998-03-30 | 1999-10-07 | Shin Caterpillar Mitsubishi Ltd. | Pelle hydraulique |
-
2003
- 2003-02-27 DE DE60307977T patent/DE60307977D1/de not_active Expired - Lifetime
- 2003-02-27 AT AT03425125T patent/ATE338171T1/de not_active IP Right Cessation
- 2003-02-27 EP EP03425125A patent/EP1452650B1/fr not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629946A (en) * | 1947-06-06 | 1953-03-03 | Mitchell H Ewers | Grading or dozing device |
US4081092A (en) * | 1975-10-17 | 1978-03-28 | Zimmerman Emil F | Tractor with lifting mechanism for mounting a bulldozer blade or the like |
US4479312A (en) * | 1983-04-11 | 1984-10-30 | Valley Engineering, Inc. | Foldable snow compactor with side wings pivotable behind central blade |
JPH07189286A (ja) * | 1993-12-28 | 1995-07-28 | Kubota Corp | ドーザ装置 |
JPH0849224A (ja) * | 1994-08-05 | 1996-02-20 | Kawasaki Heavy Ind Ltd | 除雪装置 |
WO1999050509A1 (fr) * | 1998-03-30 | 1999-10-07 | Shin Caterpillar Mitsubishi Ltd. | Pelle hydraulique |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 10 30 November 1995 (1995-11-30) * |
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 06 28 June 1996 (1996-06-28) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007064700A1 (fr) * | 2005-12-02 | 2007-06-07 | Clark Equipment Company | Interface d'outil pour excavateur compact |
US8024875B2 (en) | 2005-12-02 | 2011-09-27 | Clark Equipment Company | Compact excavator implement interface |
DE202014102267U1 (de) | 2014-05-14 | 2014-06-06 | Buchen Umweltservice Gmbh | MHM-Drehmotor |
DE102015102838A1 (de) | 2014-05-14 | 2015-11-19 | Buchen Umweltservice Gmbh | Hochdruckreinigungsvorrichtung |
JP2020033749A (ja) * | 2018-08-29 | 2020-03-05 | 株式会社日立建機ティエラ | 建設機械の排土装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1452650B1 (fr) | 2006-08-30 |
DE60307977D1 (de) | 2006-10-12 |
ATE338171T1 (de) | 2006-09-15 |
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