EP0437557A1 - Pelle tranchante. - Google Patents

Pelle tranchante.

Info

Publication number
EP0437557A1
EP0437557A1 EP90909678A EP90909678A EP0437557A1 EP 0437557 A1 EP0437557 A1 EP 0437557A1 EP 90909678 A EP90909678 A EP 90909678A EP 90909678 A EP90909678 A EP 90909678A EP 0437557 A1 EP0437557 A1 EP 0437557A1
Authority
EP
European Patent Office
Prior art keywords
blade
guide
bucket
shield
shovel
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
Application number
EP90909678A
Other languages
German (de)
English (en)
Other versions
EP0437557B1 (fr
Inventor
Heinz Langhorst
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
Publication of EP0437557A1 publication Critical patent/EP0437557A1/fr
Application granted granted Critical
Publication of EP0437557B1 publication Critical patent/EP0437557B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/15—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials for laying-down uncoated stone or similar materials, or for striking-off or spreading same without compacting, e.g. for crushed rock base courses, sand cushions for paving
    • 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
    • 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
    • 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
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements

Definitions

  • the invention relates to a bucket, in particular a leveling bucket, for arrangement on a vehicle (wheel loader, caterpillar, etc.) according to the preamble of claim 1.
  • planum When creating a paving, a flat (sand) surface must be created after the soil has been compacted - the so-called planum.
  • the paving stones used to form the paving are laid on this. While the latter is now generally done by hand, the planus, which represents a considerable cost factor in the paving, is preferably produced by machine.
  • a leveling blade which enables the formation of the formation to be pulled off when the vehicle is moving back is known from DE-OS 36 26 454.
  • the blade blade is pivotably mounted on a fixed blade body. The bucket blade can therefore be moved backwards or forwards depending on the
  • the invention is based on the object of creating a shovel, in particular a leveling shovel, which is not susceptible to wear and enables the creation of an exact (clean) formation.
  • the blade according to the invention has the features of claim 1. Due to the arrangement of the guide points in the upper region of the blade side parts, namely approximately in the middle thereof, the lower half of the blade shield, which mainly comes into contact with sand, is free from any sliding parts that are subject to wear. Thus, despite the guide points set higher than in the prior art, sliding along the underside of the blade shield at approximately the same distance from the blade base in all
  • the guide points are expediently arranged on opposite side surfaces of the blade shield. They are therefore outside of the sand-moving surfaces of the blade shield.
  • a guide lever is preferably assigned to each guide point, which is pivotally mounted at one end on a pin connected to the respective side face of the blade and is rotatably assigned to a fixed pivot point on the corresponding blade side wall at the other end.
  • the distance between the pins on the blade shield and the fulcrums on the blade side walls is chosen such that the guide points travel along a circular arc along a circular arc during the pivoting of the blade shield and thus the lower edge of the blade shield always on the flat blade base is moved along.
  • the upper, vertically displaceable bearing points of the blade shield on the blade side walls are provided with rotatable sliding pieces which slide up and down on the side surfaces between parallel, upright sliding surfaces on the blade.
  • the sliders can be made of materials
  • REPLACEMENT LEAF with good emergency running properties for example polytetrafluoroethylene. These run easily and reliably even without lubrication.
  • the separate sliding pieces which usually consist of a material that is more easily worn than the sliding surfaces attached to the blade side walls, can be easily replaced in the event of wear.
  • the blade has an implement carrier with which the blade body is connected to the blade shield in a tiltable manner.
  • the blade body with the blade shield can expediently be tilted with respect to an upright or inclined transverse plane relative to the implement carrier about a vertical (central) axis of rotation of the transverse plane.
  • the shovel body with the shovel shield can be tilted in such a way that the shovel base can be pivoted transversely to the aiming direction with respect to the vehicle (wheel loader, caterpillar, etc.) to form an oblique formation against the ground to be removed.
  • FIG. 1 is a perspective view of one half of the first embodiment of the blade
  • FIG. 2 shows a side view of the blade according to FIG. 1,
  • FIGS. 1 and 2 are partially sectioned rear views of the blade according to FIGS. 1 and 2,
  • Fig. 4 shows a second embodiment of the blade in a partial perspective view corresponding to Fig. 1, and
  • REPLACEMENT LEAF 5 shows a side view of the blade according to FIG. 4.
  • the buckets shown here are leveling buckets for attachment to a construction vehicle, not shown, for example a wheel loader, a caterpillar, a forklift or the like.
  • the shovels are particularly suitable for pulling off a level for paving, but can also be used for normal earthmoving, loading and similar work like normal leveling shovels.
  • the leveling blades are composed of a device carrier 10 which can be coupled to corresponding lifting arms of the construction vehicle, a blade plate 16 and a blade body.
  • the latter has a flat scoop base 11 and two upright scoop side walls 12 which are arranged on opposite narrow sides thereof and protrude upward relative to the scoop base 11.
  • the blade base 11 is accordingly formed on the underside 13 in a planar manner.
  • the upper, free edge regions 14 of the two blade side walls 12 are connected by a cross member 15 running parallel to the blade base 11.
  • the blade body has a frame-like basic shape.
  • the blade shield 16 is mounted about an axis of rotation 17 located at the top and running parallel to the cross member 15.
  • the bucket blade 16 is mounted between the two bucket side walls 12 at two pivot points 18, which are assigned to the axis of rotation 17, and two guide points 19 located underneath.
  • the pivot points 18 and the guide points 19 are distributed over the opposite side surfaces 20 of the blade shield 16 (FIG. 3).
  • the two guide points 19 are arranged somewhat above an (imaginary) horizontal central axis of the blade plate 16.
  • the two pivot points 18 of the same design are each formed on the one hand by an approximately cuboid-shaped slide piece 21 made of plastic, in particular polytetrafluoroethylene, which can be rotated about a (cylindrical) pin 22 projecting laterally opposite the corresponding side face 20 of the blade shield 16 and on the other hand two corresponding upright sliding surfaces 23, which are connected to the blade shield 16, on opposite upright sides of the sliding piece 21.
  • the sliding surfaces 23 are connected to one another at their lower edges by a transverse web 24 (FIG. 5).
  • the arrangement of the sliding surfaces 23 and the corresponding web 24 is such that they are connected to the outside of the respective blade side wall 12 by surrounding a corresponding rectangular cutout 25 in the blade side wall 12 and in this (Upright) frame, the respective slide 21 can be moved up and down with the blade plate 16.
  • the guide points 19 move when the blade shield 16 is pivoted from the front edge 25 of the blade base 11 to the rear edge 26 of the same on a curved path, namely a circular path (FIG. 2).
  • a further pin 27 is connected to each side surface 20 of the blade plate 16 at a distance below the pin 22 for the pivot points 18.
  • One end of an elongated guide lever 28 is rotatably mounted on each pin 27.
  • the end of the guide lever 28 opposite the pin 27 is rotatably connected to a fixed bearing point, namely a further pin 29 which is fastened to the outside of the respective blade side wall 12.
  • the guide lever 28 (FIG. 2), which is also oriented vertically, is pivoted in the opposite direction to the blade shield 16, as a result of which the vertical distance between the pins 27 and 29 is shortened compared to that in the vertical position of the guide lever 28 is and by this amount the axis of rotation 17 with the sliders 21 in the pivot points 18 moves downward (position indicated by dash-dotted lines in FIG. 2).
  • the amount of this vertical offset corresponds to the shortening of the vertical distance between the axis of rotation 17 and the lower edge 30 of the blade plate 16 in the pivoted state thereof.
  • the lower edge 30 of the blade shield 16 is guided parallel to the flat blade base 11 over the entire swivel range, with a slight distance from the same or a slight bearing thereon.
  • the kinematics described above at the guide points 19 is achieved by a certain length of the two guide levers 28 of the same design.
  • the distance between the pins 27 to form the guide points 19 and the pins 29 fixedly arranged on the blade side walls 12 is in fact selected such that the guide points 19 move along a circular arc path shown in dashed lines in FIG. 2, whereby the bottom ⁇ edge 30 of the blade shield 16 slides along the straight blade base 11 or has an almost constant, small distance from the blade base 11.
  • the guide levers 28 are located outside the blade body, namely they are assigned to the outer sides of the blade side walls 12 (FIG. 3). Accordingly, the pins 27 used to form the guide points 19 protrude on the side faces 20 of the blade shield 16 through a corresponding clearance 31 in the blade side wall 12 assigned to them, so that they - like the pins 29 fastened thereon - against the outer sides of the blade side walls 12 protrude through the leadership
  • the clearances 31 are designed here as curved elongated holes, the radius of which corresponds approximately to the distance between the pins 27 and the pins 29.
  • the dimensions of the frankings are 31
  • the pivoting of the blade shield 16 with respect to the blade body takes place by means of two pressure medium elements, namely double-acting hydraulic cylinders 32.
  • a hydraulic cylinder 32 is assigned to a blade wall 12 from the inside.
  • a free end of each piston rod 33 is connected at a fixed articulation point 34 to a corresponding blade side wall 12, namely an end region thereof on the rear side of the blade shield 16 pointing towards the equipment carrier 10 0.
  • the ends of the cylinders 36 are at a pivot point 37 with the Back of the blade shield 16 connected approximately at the level of the guide points 19.
  • the device carrier 10 in turn is pivotally connected to the blade body by the ends of its parallel cross members 38 and 39, which are connected to one another by several transverse webs 40, in slide guides 41 and 42 on the opposite blade side walls 12 5 on the one hand and the On the other hand, cross bar 15 for connecting the upper edge regions of the blade side walls 12 are displaceably mounted.
  • the slide guides 41 and 42 each consist of parallel, upright guide cheeks
  • REPLACEMENT LEAF ⁇ 43 which are firmly connected to the blade side walls 12 and the cross member 15 of the blade body. In between, the end regions of the cross bars 38 and 39 of the device carrier 10 are mounted so that they can be moved up and down, with the purpose of forming
  • the pivoting of the blade body with the blade shield 16 relative to the implement carrier 10 is again carried out by two pressure medium members, namely hydraulic cylinders 46. These are approximately upright with a parallel distance 0 on the one hand with the long cross member 38 of the implement carrier 10 and on the other hand with the transverse member 15 on the bucket body ⁇ bound. This is done in such a way that the ends of the cylinders 47 are articulated 5 to the end regions of the (long) cross bar 38 projecting above the (short) cross bars 39, while the ends of the piston rods 48 are also articulated with those opposite the (short) cross bars 39 projecting end regions of the cross member 15 are connected between the blade side walls 12 (FIG. 1). In this way, by actuating the hydraulic cylinders 46 uniformly but in opposite directions, the blade body with the blade shield 16 can be rotated about the central axis 45 relative to the implement carrier 10.
  • the second exemplary embodiment of the leveling blade differs from the one described above in that it has guide points 49 of different design (FIGS. 4 and 5). Otherwise, the leveling bucket of this embodiment corresponds to that of the first embodiment, see above
  • the guide points 49 are also arranged in the area above the center of the blade shield 16. They also have pins 50 which protrude from the side surfaces 20 of the blade shield 16, but which are not guided on guide levers, but rather only on a corresponding circular arc-shaped slot 51 in the respective blade side wall 12.
  • the circular oblong holes 51 are dimensioned in width corresponding to the diameter of the pins 50, so that they can slide along therein with slight play.
  • the convex sides of the circular oblong holes 51 are arranged in the blade side walls 12 with their convex sides directed towards the pivot points 18.
  • the radii of the same length of the slot 52 in the middle of both slots 51 are selected so that in any pivot position of the blade plate 16, its lower edge 30 is at a constant distance from the blade base 11 or slides along the inside thereof (FIGS. 4 and 5).
  • the leveling blades of both exemplary embodiments can be provided on their lower edge with an exchangeable slide rail which, guided by the guide points 19, slides along the inside of the blade base 11 with a constant, small distance or when it is pivoted, when the blade shield 16 is pivoted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Shovels (AREA)
  • Soil Working Implements (AREA)
  • Centrifugal Separators (AREA)
  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)

Abstract

Les pelles tranchantes de nivellement mécanique d'une plate-forme de chaussée à des fins de pavage requièrent un fond plat (11) et une lame niveleuse pivotante (16), de sorte que la pelle puisse recueillir l'excédent de sable et niveler la plateforme de chaussée lorsque le véhicule couplé à la lame tranchante fait marche arrière. Dans une pelle tranchante connue de ce type, les guidages du pivotement de la lame niveleuse (16) par rapport au corps de la pelle (fond 11; parois latérales 12) se situent dans la région où le sable s'accumule dans la pelle tranchante et sont ainsi exposés à une usure accrue. L'invention a pour objet de créer une pelle tranchante moins exposée à l'usure. La pelle tranchante décrite comprend des guidages (points de guidage 19) décalés en hauteur par rapport au fond (11) de la pelle, en arc de cercle afin de permettre à la lame niveleuse (16) de pivoter, avec un écartement (réduit) approximativement identique entre le bord inférieur (30) et le fond (11) de la pelle.
EP90909678A 1989-06-07 1990-06-05 Pelle tranchante Expired - Lifetime EP0437557B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3918600 1989-06-07
DE3918600A DE3918600A1 (de) 1989-06-07 1989-06-07 Schaufel, insbesondere planierschaufel
PCT/EP1990/000884 WO1990015196A1 (fr) 1989-06-07 1990-06-05 Pelle, notamment pelle tranchante

Publications (2)

Publication Number Publication Date
EP0437557A1 true EP0437557A1 (fr) 1991-07-24
EP0437557B1 EP0437557B1 (fr) 1994-05-18

Family

ID=6382282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90909678A Expired - Lifetime EP0437557B1 (fr) 1989-06-07 1990-06-05 Pelle tranchante

Country Status (8)

Country Link
EP (1) EP0437557B1 (fr)
AT (1) ATE105892T1 (fr)
AU (1) AU5923990A (fr)
CA (1) CA1331091C (fr)
DD (1) DD294991A5 (fr)
DE (2) DE3918600A1 (fr)
DK (1) DK0437557T3 (fr)
WO (1) WO1990015196A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9404750U1 (de) * 1994-03-21 1994-06-01 Hydromak Lehnen Gmbh & Co. Kg, 26203 Wardenburg Vorrichtung zur Herstellung eines Planums, insbesondere für die Verlegung von Pflastersteinen
NL2011518C2 (nl) * 2013-09-27 2015-03-30 Bos Konstruktie En Machb B V Grondbewerkingsinrichting voor een voertuig.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2209269A1 (de) * 1972-02-26 1973-09-06 Erhard Lauster Entwicklungen G Baggerschaufel
US3837516A (en) * 1972-06-09 1974-09-24 Stumpf I Loader bucket with ejector
US4044843A (en) * 1976-04-22 1977-08-30 Arnold Emeral Holub Tractor-mounted scraper
FR2448002A1 (fr) * 1979-02-02 1980-08-29 Dorliat Claude Perfectionnements aux pelles hydrauliques dont le godet est pourvu d'une palette d'ejection articulee
DE3626454A1 (de) * 1986-03-19 1987-09-24 Heinz Langhorst Sand-boden planierschaufel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9015196A1 *

Also Published As

Publication number Publication date
AU5923990A (en) 1991-01-07
ATE105892T1 (de) 1994-06-15
CA1331091C (fr) 1994-08-02
EP0437557B1 (fr) 1994-05-18
WO1990015196A1 (fr) 1990-12-13
DD294991A5 (de) 1991-10-17
DE59005745D1 (de) 1994-06-23
DK0437557T3 (da) 1994-09-19
DE3918600A1 (de) 1990-12-13

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