EP0256304A1 - Maschine für Erdarbeiten - Google Patents

Maschine für Erdarbeiten Download PDF

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Publication number
EP0256304A1
EP0256304A1 EP87110040A EP87110040A EP0256304A1 EP 0256304 A1 EP0256304 A1 EP 0256304A1 EP 87110040 A EP87110040 A EP 87110040A EP 87110040 A EP87110040 A EP 87110040A EP 0256304 A1 EP0256304 A1 EP 0256304A1
Authority
EP
European Patent Office
Prior art keywords
articulated
jaw
fixed
axis
earth
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
EP87110040A
Other languages
English (en)
French (fr)
Other versions
EP0256304B1 (de
Inventor
Serge Vuistiner
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
Priority to AT87110040T priority Critical patent/ATE50748T1/de
Publication of EP0256304A1 publication Critical patent/EP0256304A1/de
Application granted granted Critical
Publication of EP0256304B1 publication Critical patent/EP0256304B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
    • 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
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device

Definitions

  • the present invention relates to an earthmoving machine comprising two jaws articulated on a chassis.
  • This multipurpose machine is intended to be mounted on a truck, a crane, or any other mobile or stationary machine.
  • Known earthmoving machines of the aforementioned type are generally provided with jaws each articulated around a single axis, or possibly two axes fixed relative to each other.
  • the use of such devices is of course limited according to the possible movements of the jaws, as well as the shape of these.
  • the holder has already described a machine of this type, in which each jaw is pivotally mounted on two axes of rotation moving laterally relative to the chassis, during the opening and closing movements. closing said jaw, each on a substantially planar surface, so that the free edge of the jaw also moves on a substantially planar surface.
  • the object of this invention therefore consists in providing a versatile and improved earthmoving machine, the jaws of which can be actuated by a single jack, and which can be used both for digging, scraping, leveling, excavating, etc., as well as handling device for loading and unloading of various materials, moving heavy loads such as stone blocks for riprap, etc.
  • the earth-moving machine, object of the present invention and aimed at achieving the above-mentioned object has the characteristics set out in claim l.
  • the earthmoving machine comprises a frame 1 provided with fixing and connecting members 2 intended to cooperate in the service position with a control arm (not shown).
  • This control arm supporting and guiding the earthmoving machine, is itself mounted on a truck, a crane or on any other mobile or fixed machine.
  • each jaw 3 is articulated at "a" at the end of main arms 4 welded to a transverse tube 5, itself connected to the chassis by fittings 6 and 6 ⁇ , pivotally mounted on the latter, more particularly on pivot axes 7 transverse and fixed relative to the chassis l.
  • each jaw 3 is provided with secondary arms 8 articulated by one of their ends at "b" on said jaw 3 and by their other end on a transverse axis constituted by a tube 9.
  • This tube 9 is held at a fixed distance from the chassis l, two connecting rods l0 being articulated on the one hand on said tube 9 and on the other part on the fixed transverse axis 7.
  • Two straight rods ll are also pivotally mounted by one of their ends on the transverse axis 9 on which the secondary arms 8 are articulated and by their other end on another transverse axis l2 ; at the ends of the latter are articulated by one of their ends two other straight rods 13, the other end of these being articulated along a transverse axis 13 ⁇ on the fittings 6 ⁇ secured to the fixed pivot axis 7 and welded on the tube 5.
  • each jaw 3 has the possibility of pivoting on the one hand around a transverse axis 7 secured to the chassis l, and on the other hand on itself, and more particularly on the articulation "a" of the main arms 4 , this articulation "a” being movable on an arc of a circle, the center of which corresponds to said pivot axis 7.
  • the main arms 4 of the two jaws 3 are mechanically connected to each other by a connecting rod 16, articulated on each side on the fittings 6 ⁇ more particularly above the pivot axis 7 d ' one side and below this axis on the other side.
  • This connecting rod 16 is intended to control the relative movement of the jaws 3 around the respective pivot axes 7, such so that the jaws 3 are arranged symmetrically with respect to the chassis l in the closed position and in the fully open position, but that the opening and closing movement respectively of these jaws can be made in a non-symmetrical manner with respect to the chassis l.
  • a spring or hydraulic cylinder device 17 is provided between the pivot axis 7 and the sets of rods ll, l3 secured to the secondary arms 8, this device being mounted so that it resists elastically the opening of the jaw 3 by pivoting on the joints “a” and “b” and thus tends to maintain the rounded portion 18 of said jaw 3 against the tube 5 secured to the main arms 4 (see FIGS. 1 and 2), especially when opening the jaws 3.
  • the spring or hydraulic cylinder device can be positioned externally between the transverse tube 5 and the hinge pin 9, the effect of this device being the same as in the embodiment illustrated in the accompanying drawing .
  • the control thereof can also be linked to that of the main hydraulic cylinder 14.
  • Figures l and 2 show the earthmoving machine in its two extreme positions, respectively closed and open.
  • the distance between the two pivot axes l2 of the two jaws 3 is maximum, that is to say that the rod l5 of the jack 14 is practically extended from its maximum stroke.
  • the angle between the links ll and l3 is substantially straight, with the axis of articulation l2 of the links ll, l3 located longitudinally between the hinge axis 9 of the secondary arms 8 and the hinge axis l3 ⁇ of the rods l3, and such that the rods l3 form with the plane of the chassis l an angle ⁇ .
  • This angle ⁇ determines an equilibrium or pivot point 0 between the jaws 3 located approximately 1/8 of the lower end thereof in the closed position, this position having proved in practice to be the most favorable for gripping. . If an object is placed between the jaws 3 at the point 0, the edges of these then remain vertical, parallel to each other.
  • Figures 3 and 4 illustrate a first open gripping position, in which the two jaws 3 are positioned practically symmetrically with respect to the frame l.
  • FIG 5 it illustrates another gripping position in which the two jaws, enclosing between them a block of stone l9 for example, are not positioned symmetrically with respect to the frame l.
  • the two jaws 3 can therefore work with a certain independence from one another, in particular according to the shape and the positioning of the block 19.
  • the angle between the two links 11 and 13 is more open in the case of the right jaw than in that of the left.
  • pivot point which was located approximately 1/8 of the lower end of the jaws 3 in the closed position ( Figure 1), is moved up (0 ⁇ ) in the case of the right jaw where the angle ⁇ of the rod l3 has become negative with respect to the plane parallel to the chassis passing through the axis of articulation l2; the pivot point 0 ⁇ of the left jaw is moved downwards, near the lower end, the angle ⁇ of the rod 13 being greater than the angle ⁇ of the closed position ( Figure l).
  • the spring or hydraulic cylinder devices 17 allow the jaws 3 to pivot in the other direction on themselves to return to their normal position once they no longer meet resistance, the block l9 having for example been released.
  • the earthmoving machine according to the invention makes it possible on the one hand to open the jaws by pivoting on a fixed axis secured to the chassis, and on the other hand and simultaneously with the rotation on itself of each jaw, it therefore makes possible many movements of these jaws which are not with known devices and has an advantageous versatile character.
  • the machine according to the invention makes it possible to carry out, without modifying its design or the shape of its jaws, many works of very different natures: - it makes it possible to dig, excavate, drill a well, etc., even in very hard soils, this with a minimum of necessary pressure on the machine, the angle of the jaws being favorable for penetration into the soil in all positions between the open and closed positions; - thanks to the fact that the free edge of its jaws moves during the opening and closing movements on an approximately flat surface, the machine is able to dig a well or an excavation with a substantially flat bottom, even below '' a smaller diameter opening, and does not require subsequent manual intervention; in addition, it also allows the stripping and leveling of a surface, for example of a surface to be turfed; - The efficiency of the machine is higher, due to the possibility of working on a plane in the two directions of respectively opening and closing of the jaws; - the point of attachment of the machine to a machine being located a short distance from the jaws, the center
  • FIG. 6 differs from this by the presence of a hydraulic cylinder 20, mounted integral with the hinge pin 9 and rigidly connected to the transverse tube 5 by a connecting rod angled 2l and a double triangular intermediate element 22. More particularly, the end of the rod 20 ⁇ of the jack 20 is articulated on one of the vertices of the element 22, a second vertex 23 being welded to the transverse tube 5, while the bent connecting rod 2l is fixed on one side to the third apex 24 of the triangular element 22 and on the other in a removable manner, for example by means of a key, on an ear 25 also welded on the transverse tube 5.
  • the role of the hydraulic cylinder 20 is the same as that of the spring device l7 shown in FIGS. 1 to 5. If the hydraulic cylinder 20 is a double-acting cylinder, then this cylinder can control either the opening and the closing of the upper part 18 of the jaws 3.
  • connecting rod l6 of the embodiment of Figures l to 5 is replaced by two half-rods l6 ⁇ connected to each other by a connecting rod l6 ⁇ pivoted in its center.
  • the earthmoving machine according to the invention is removably provided with an accessory consisting of a scraping device.
  • This scraping device comprises a scraper 26, the width of which roughly corresponds to that of the jaw 3, and which is carried by two lateral arms 27 coming in the service position to be detachably hooked on pins 28 integral with the internal walls side of the jaw 3.
  • the scraper 26 also has a central arm 29, which is fixed in the service position and removably on the end 29 of the angled link 2l, previously detached from the ear 25 welded to the tube transverse 5.
  • the advantage of the scraper device as described above is that it is removable and does not require an additional actuating member, since this accessory can be actuated by the same hydraulic cylinder and the same stem stroke thereof, as that used for controlling the upper part of the jaw (pivoting about the axis "a".)

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)
  • Soil Working Implements (AREA)
  • Earth Drilling (AREA)
  • Handcart (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP87110040A 1986-07-18 1987-07-11 Maschine für Erdarbeiten Expired - Lifetime EP0256304B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87110040T ATE50748T1 (de) 1986-07-18 1987-07-11 Maschine fuer erdarbeiten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2893/86 1986-07-18
CH2893/86A CH669002A5 (fr) 1986-07-18 1986-07-18 Engin de terrassement.

Publications (2)

Publication Number Publication Date
EP0256304A1 true EP0256304A1 (de) 1988-02-24
EP0256304B1 EP0256304B1 (de) 1990-03-07

Family

ID=4243966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110040A Expired - Lifetime EP0256304B1 (de) 1986-07-18 1987-07-11 Maschine für Erdarbeiten

Country Status (5)

Country Link
EP (1) EP0256304B1 (de)
AT (1) ATE50748T1 (de)
CH (1) CH669002A5 (de)
DE (2) DE3761816D1 (de)
ES (1) ES2001466B3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194193A1 (de) 2008-12-05 2010-06-09 Serge Vuistiner Baggergreifer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257610B (zh) * 2015-07-13 2017-03-01 南通港闸船舶制造有限公司 易操作的自航钢耙抓斗挖泥船液压***

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR919101A (fr) * 1945-12-18 1947-02-27 Benne-preneuse
DE1114623B (de) * 1957-01-14 1961-10-05 Wilhelm Ludowici Dr Ing Greifer
DE1123097B (de) * 1959-11-21 1962-02-01 Taylor & Sons Manchester Ltd F Kuebelgreifer mit hydraulischem Antrieb zum Verschwenken der beiden Kuebelhaelften
FR2111939A1 (de) * 1970-10-30 1972-06-09 Deere & Co
FR2300034A1 (fr) * 1975-02-10 1976-09-03 Yumbo Benne preneuse a commande hydraulique
US4023848A (en) * 1976-01-05 1977-05-17 J. I. Case Company Log grapple
CA1036047A (en) * 1976-04-27 1978-08-08 Logging Development Corporation Apparatus for accumulating trees during harvesting of the same
FR2378906A1 (fr) * 1977-01-27 1978-08-25 Nemag Bv Perfectionnements a une pelle mecanique
EP0054207A2 (de) * 1980-12-02 1982-06-23 Serge Vuistiner Hydraulische Vorrichtung für eine Bodenbewegungsmaschine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR919101A (fr) * 1945-12-18 1947-02-27 Benne-preneuse
DE1114623B (de) * 1957-01-14 1961-10-05 Wilhelm Ludowici Dr Ing Greifer
DE1123097B (de) * 1959-11-21 1962-02-01 Taylor & Sons Manchester Ltd F Kuebelgreifer mit hydraulischem Antrieb zum Verschwenken der beiden Kuebelhaelften
FR2111939A1 (de) * 1970-10-30 1972-06-09 Deere & Co
FR2300034A1 (fr) * 1975-02-10 1976-09-03 Yumbo Benne preneuse a commande hydraulique
US4023848A (en) * 1976-01-05 1977-05-17 J. I. Case Company Log grapple
CA1036047A (en) * 1976-04-27 1978-08-08 Logging Development Corporation Apparatus for accumulating trees during harvesting of the same
FR2378906A1 (fr) * 1977-01-27 1978-08-25 Nemag Bv Perfectionnements a une pelle mecanique
EP0054207A2 (de) * 1980-12-02 1982-06-23 Serge Vuistiner Hydraulische Vorrichtung für eine Bodenbewegungsmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194193A1 (de) 2008-12-05 2010-06-09 Serge Vuistiner Baggergreifer
WO2010064188A1 (fr) 2008-12-05 2010-06-10 Serge Vuistiner Benne de terrassement
JP2012511111A (ja) * 2008-12-05 2012-05-17 ビスティーヌ セルジュ 土工用バケット
US8607480B2 (en) 2008-12-05 2013-12-17 Serge Vuistiner Earth moving bucket

Also Published As

Publication number Publication date
DE3761816D1 (de) 1990-04-12
DE256304T1 (de) 1988-06-30
ES2001466A4 (es) 1988-06-01
EP0256304B1 (de) 1990-03-07
ES2001466B3 (es) 1990-05-16
ATE50748T1 (de) 1990-03-15
CH669002A5 (fr) 1989-02-15

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