EP0356876A2 - Dispositif pour monter un outil de pelle sur un véhicule - Google Patents

Dispositif pour monter un outil de pelle sur un véhicule Download PDF

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Publication number
EP0356876A2
EP0356876A2 EP89115434A EP89115434A EP0356876A2 EP 0356876 A2 EP0356876 A2 EP 0356876A2 EP 89115434 A EP89115434 A EP 89115434A EP 89115434 A EP89115434 A EP 89115434A EP 0356876 A2 EP0356876 A2 EP 0356876A2
Authority
EP
European Patent Office
Prior art keywords
mast
loader
support
vehicle
front support
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
EP89115434A
Other languages
German (de)
English (en)
Other versions
EP0356876B1 (fr
EP0356876A3 (en
Inventor
Rory Rae
Henry Friesen
Nicholas Hamm
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of EP0356876A2 publication Critical patent/EP0356876A2/fr
Publication of EP0356876A3 publication Critical patent/EP0356876A3/de
Application granted granted Critical
Publication of EP0356876B1 publication Critical patent/EP0356876B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
    • E02F3/6273—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor using legs to support the beams or arms on the ground during the connecting process

Definitions

  • the invention relates to a device for releasably attaching a loader to a vehicle, in particular to a tractor, with at least one rear and at least one front support device attached to the vehicle for the respective reception of support elements of a loader mast, which carries a pivotable boom arrangement of the loader.
  • the suspension on the tractor is a hindrance and must be removed. This is necessary, for example, if the loader is dismantled in order to make the tractor available for normal operation or to add other attachments, such as front weights, after the loader has been removed from the Fasten tractor. Attaching and detaching suspensions to the tractor can be a time-consuming and arduous process.
  • DE-OS 31 51 279 has disclosed a detachable front loader that can be connected to a tractor.
  • the front loader can be supported by an attachment on assigned front and rear support elements of the vehicle frame.
  • the parking front loader with the attachment is to be brought into the attachment position.
  • the loader must obviously be lifted using suitable aids.
  • the object to be achieved with the invention is seen in specifying a device for releasably fastening a loader to a vehicle of the type mentioned at the outset, which allows the loader to be mounted and dismantled easily and quickly on the vehicle.
  • the problems described in known devices are to be overcome.
  • the device is intended to enable a reliable and firm connection between the vehicle frame and the loader. Separate fasteners such as screws or bolts should not be necessary.
  • the rear, formed from the support device and support member is formed as a substantially transverse pivot bearing about which the front support member can be pivoted by means of pivoting means on an arc between a lower storage position and an upper mounting position.
  • trough-shaped support structure which is open obliquely to the front and upwards on the vehicle frame and is suitable for opening a support element fastened to the rear lower loading mast area in this way take that the mast can be pivoted relative to the vehicle frame.
  • Hydraulic cylinders serve as pivoting means, which are moved together to lower the rear support element (pivot arrangement) into the rear support structure. If the pivot arrangement engages in the rear support structure, the mast is pivoted about this bearing point by moving the hydraulic cylinder further together, so that its front end lifts off the ground.
  • a cross tube attached to the lower front mast end slides into a downward opening of a support bearing screwed to the front of the vehicle.
  • a pawl pivotally attached to the front support structure swings under the cross tube and can be fixed by a locking part.
  • the locking part is adjustable via a cable pull that can be operated from the driver's seat.
  • the rear support element preferably contains an attachment part which projects beyond the pivot arrangement and interacts with a stop.
  • the stop is located in the lower area of the rear carrying device.
  • the attachment part engages the stop when the mast has reached its mounting position pivoted upwards.
  • the pivot arrangement is clamped in the trough-shaped rear support device and can no longer move out.
  • the front carrying device preferably contains means for attaching front weights, unless a front loader is mounted.
  • the attachment and detachment of the loader to the vehicle can be carried out by an operator from the vehicle cabin without having to leave the cabin.
  • the fastening device creates a close connection between the loader and the vehicle frame without Screws or other fasteners would be required. It automatically connects the loader mast to the vehicle frame when the mast is swiveled upwards into its mounting position.
  • the vehicle does not need to be moved during assembly, nor is it necessary to move the loader over an area of the vehicle frame or the support structure.
  • the support device does not need to be removed from the vehicle after dismantling the loader, since it does not interfere with the normal operation of the vehicle.
  • the front mounting assembly can remain on the vehicle after disassembly of the loader. It can be mounted on your front weights.
  • a tractor 10 which has a main frame 12 which is supported on front and rear wheels 14 and 16, which serve the movement over the ground.
  • the tractor 10 contains a cabin 18.
  • the tractor frame 12 carries a front loader 20 through bilateral rear support devices 22, which are attached to the sides of the frame 12, and through a front support device 24.
  • the loader 20 contains a mast 30, which has an upright rear mast stand 32 with forward mast arms 34.
  • the mast arms 34 are rigidly connected to the stands 32 in the vicinity of the central region thereof.
  • a boom 40 is articulated at 42 to the upper ends of the mast stand 32.
  • the boom 40 extends from the articulation point 42 downward toward the front to a bucket receiving end 44 which carries a conventional loader bucket 46 or other attachments which can be fastened to the boom 40.
  • boom actuating cylinders 48 are fastened.
  • the cylinders 48 can be extended and retracted by a conventional hydraulic circuit, not shown, which can be connected to the hydraulic system of the tractor, in order to pivot the boom 40 up and down about the articulation point 42 and around the mast 30 during assembly and disassembly to rotate about the axis of the support devices 22.
  • Each of the rear supports 22 includes a suspension 52 (FIG. 8) which is connected to the frame 12 by screws 54.
  • a horizontal support frame 56 is welded to the suspension 52 and carries a trough-shaped support structure which is open at the top and at the front and which is designated as a whole by the reference number 58.
  • the support structure 58 contains two parallel sheets, welded to the horizontal support frame 56, which stand upright and have cutouts and which are connected to one another by a rear wall 66 and a front wall 68. As can be seen from FIG. 8, the cutouts in the sheets 62 and 64 are open at the top and at the front and narrow downward. End shields 72 and 74 are attached to the upper and lower surfaces of the recesses, adjacent to the lower region of the recesses.
  • a locking block 78 is between the front ends of the sheets 62 and 64 and adjacent to the off savings attached with a screw 82 which extends through the wall 68 and is screwed into the locking block 78. If necessary, spacer plates 84 are inserted between the locking block 78 and the wall 68 in order to adjust the longitudinal orientation of the locking block 78.
  • Funnel-shaped metal sheets 92 and 94 are welded to the metal sheets 62 and 64 and protrude from the outside thereof. The funnel-shaped sheets 92 and 94 serve as a guide for the lower end of the mast stand 32 during its assembly, which will be explained in more detail.
  • each mast stand 32 includes a pivot assembly 102 which is preferably in the form of a circular shaft which extends through and is welded to the opposite side walls of the mast stand.
  • a clamping stop or extension 106 is welded to the lower region of the pivot arrangement 102 between the side walls of the mast stand 32 and protrudes downward over the side walls of the mast stand 32.
  • the extension part 106 is aligned essentially parallel to the rear wall of the mast stand 32 lying between the side walls. It can be seen from FIGS.
  • the clamping stop 106 rotates forward until it rests on the blocking block 78 (FIG. 11).
  • the clamping stop 106 is pressed against the blocking block 78, the pivot arrangement 102 being firmly clamped between the end shields 72 and 74 and the lower end of the mast stand 32 being prevented from moving further forward.
  • the support structure 58 thus prevents movement of the lower end of the mast stand 32 backwards, upwards and to the side and provides a very tight fit between the mast 30 and the tractor frame 12.
  • spacer plates can be used 84 may be added or removed to ensure that the lower portion of the mast stand 32 is held firmly in the rear bracket 22.
  • the front support device 24 (FIGS. 3 to 7) contains an inverted support arrangement 114 which is screwed to the front end of the tractor frame 12.
  • a transverse round cross tube 116 is connected to the mast arms 34 via supporting parts 118, 120 between the lower, front ends thereof (FIG. 4).
  • the cross tube 116 moves on an arc, the center of which is the axis of the pivot assembly 102 until it is received by the support assembly 114.
  • a locking arrangement which can be actuated by pull cable 188 and which is identified overall by the reference symbol 122 is activated in order to hold the cross tube 116 in the support arrangement 114, after which the loader 20 is ready for operation.
  • the front support device 24 is connected to the foremost part of the frame 12 by screws 126 which extend through a rear plate 128.
  • Transversely spaced side panels 132, 134 extend forward from the outermost edge of rear panel 128 and are recessed at 136 and 138, or are trough open, to accommodate cross tube 116 as it moves on the arc.
  • the lower area of the openings 136, 138 widens downward in order to insert the cross tube 116 into the upper areas of the cutouts 136, 138, which basically have the shape of the tube 116.
  • a front plate 142 is welded to the front edges of the side plates 132, 134 and the front edges of an upper plate 144, which essentially closes the support arrangement 114 from above.
  • locking parts 146, 148 are rotatably fastened, the axes of rotation 152, 154 of which in each case lie near the upper ends of the locking parts 146, 148.
  • the locking parts 146, 148 are essentially C-shaped and can lie between an open position (FIG. 6) and a locked position (FIG. 5), in which the locking parts 146, 148 close around the cross tube 116, provided that the latter is closed located in the recesses 136, 138 are pivoted.
  • the lower region of the C-shaped locking parts 146, 148 extends under the tube 116.
  • the weight of the locking parts 146, 148 basically presses them into their closed position about their axis of rotation 152, 154.
  • the lower, forward-facing end faces, which are provided with the reference numerals 162, 164, are angled such that when the cross tube 116 is inserted into the support arrangement 114, the cross tube 116 presses the locking parts 146, 148 into their open position.
  • the locking parts 146, 148 swing back into their closed position.
  • the latch assembly 122 includes a transversely extending latch abutment 172 which is slidably disposed near the rear panel 128 and is vertically movable by a vertical bolt or screw 174 screwed into the central region of the abutment 172. If the locking abutment 172 is in its lower locking position, its front side rests on the rear side of the locking parts 146, 148 and thus prevents the locking parts from moving out of their locking position. In order to unlock the locking parts 146, 148 from their position clasping the cross tube 116, the abutment 172 is raised (FIGS. 6 and 7), so that the locking parts 146, 148 can be pivoted backwards into their open position and the cross tube 116 out of the position Support arrangement 24 released.
  • the bolt 174 includes an eye 178 at the upper end which is pivotally connected to one end of a lever 182.
  • the opposite end of the lever 182 is non-rotatably connected to one end of a second lever 184 and is mounted on a joint 186 which is supported by a vertical plate 187.
  • the other end of the second lever 184 is pivotally connected to one end of a push-pull cable 188 or other mechanical linkage which is connected to a control handle or other handle 192 (FIG. 1) located in the tractor cabin 18.
  • a pressure exerted on the cable 188 rotates the levers 182 and 184 counterclockwise as shown in FIG. 7 and pushes the locking abutment 172 down into the locking position.
  • the levers 182 and 184 are rotated clockwise and raise the locking abutment 172 to its unlocked position (FIG. 6).
  • the abutment 172 slides over vertical guide parts 196, which guide the abutment 172 exactly in the longitudinal direction and provide stable support for the abutment 172 when they hold the locking parts 146, 148 in the locking position according to FIG. 5.
  • a protective shield 202 is screwed tightly over the locking device 122 in order to protect the arrangement against contamination.
  • the outer dimensions of the support arrangement 114 are adapted to the recess of a conventional tractor front weight 206 (FIG. 5) in such a way that the arrangement 114 at the front end of the tractor 10 can serve as a front weight carrier when the loader 20 has been removed.
  • a rail 208 with a circular cross-section is welded across the front upper edge of assembly 114 to receive the corresponding groove in the front weights.
  • a U-shaped support 212 (FIG. 4) is screwed to the lower ends of the support members 118 and 120 and supports the loader 20 above the ground when the loader 20 has been removed from the tractor 10.
  • the loader 20 can be stored in an erected position, as shown in FIG. 2. However, cylinders 48 may also be contracted so that loader 20 is stored in a collapsed position.
  • the tractor 10 In order to mount the loader 20, the tractor 10 is moved between the mast arms 34, which according to FIG. 2 are in their erected position, until the tubes 102 of the pivot arrangement assume a position above the corresponding rear support devices 22.
  • the hydraulic lines of the loader are connected to those of the tractor and the boom cylinders 48 are extended so that the tubes 102 are lowered onto the support structures 58 and inserted from the funnel-shaped plates 92, 94.
  • the loader 20 rests on the support 212 and tilts around it. But when, As shown in FIG. 10, the tubes 102 attached to the lower end of the mast stands 32 are inserted into the rear supports 22, the tubes 102 form the fulcrum for the loader assembly.
  • the mast arms 34 are pivoted about the tubes 102, whereby the front end of the mast arms 34 is raised until the cross tube 116 engages and is supported on the front support arrangement 114 (FIG. 5).
  • the cross tube 116 engages in the support arrangement 114 the locking parts 146 and 148 are pivoted out of the insertion path (the locking abutment 172 can be released beforehand by pulling the control handle 192 in the cabin 18).
  • each clamping stop 106 which extend downward from each tube 102, move out a first position, in which the entry of the lower region of the mast stands 32 into the support structures 58 is facilitated, into a second stop position, which is shown in FIG. 11.
  • each clamping stop 106 lies closely against the associated blocking block 78, which prevents the lower ends of the mast stands 32 from moving in the forward direction.
  • the support structures 58 hold back the lower parts of the mast stand 32 in the direction now taken.
  • the arrangement of the locking blocks 78 and clamping stops 106 ensures that a substantial part of the load is taken up by areas of the support structures 58 other than that of the stops 78 and 106.
  • the stop arrangement described furthermore requires that the mast stand 32 must be rotated almost into its upright assembly end position (FIG. 11) before the mast arrangement is fixed in the support structures. This arrangement facilitates easy insertion of the lower portion of the mast stands into the support structures during assembly and easy removal of the lower ends of the mast stands from the support structures 58 during disassembly. It can be seen that in the arrangement described, apart from attaching and detaching the hydraulic hoses, the whole assembly and disassembly can be carried out from the driver's seat. No separate tools or aids are required for this.
  • Cross tube 106 moves in an arc around tubes 102 directly into or out of front support assembly 114 without the loader having to be pulled over the tractor frame or attachment assembly.
  • the tractor also does not have to be moved forwards or backwards during assembly or disassembly of the loader.
  • the front support device 24 does not need to be removed from the tractor when the loader is dismantled and front weights are to be installed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Agricultural Machines (AREA)
EP89115434A 1988-08-26 1989-08-22 Dispositif pour monter un outil de pelle sur un véhicule Expired - Lifetime EP0356876B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/236,803 US4936737A (en) 1988-08-26 1988-08-26 Loader mounting system
US236803 1988-08-26

Publications (3)

Publication Number Publication Date
EP0356876A2 true EP0356876A2 (fr) 1990-03-07
EP0356876A3 EP0356876A3 (en) 1990-03-28
EP0356876B1 EP0356876B1 (fr) 1992-10-28

Family

ID=22891034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115434A Expired - Lifetime EP0356876B1 (fr) 1988-08-26 1989-08-22 Dispositif pour monter un outil de pelle sur un véhicule

Country Status (6)

Country Link
US (1) US4936737A (fr)
EP (1) EP0356876B1 (fr)
AU (1) AU610428B2 (fr)
CA (1) CA1308072C (fr)
DE (1) DE58902548D1 (fr)
ZA (1) ZA896511B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689536A1 (fr) * 1992-04-07 1993-10-08 Kubota Kk Appareil d'accouplement de dispositif de chargement frontal.

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135347A (en) * 1990-03-30 1992-08-04 Kaczmarczyk Edward T Loader mounting
US5387076A (en) * 1993-08-23 1995-02-07 Deere & Company Structure for attaching a loader to a tractor
US5388950A (en) * 1993-08-23 1995-02-14 Deere & Company Bumper quick-attach for tractor front-end loaders
JP2750264B2 (ja) * 1993-08-27 1998-05-13 株式会社クボタ 作業機の装着装置
US5542814A (en) * 1994-11-22 1996-08-06 New Holland North America, Inc. Method of lifting a skid steer loader bucket
US5620297A (en) * 1996-02-14 1997-04-15 Mahaney; F. Allen Tractor loader mounting structure
US6386821B1 (en) 1999-12-16 2002-05-14 Bush Hog, L.L.C. Mounting system for mid-mount front end loaders
US20080063503A1 (en) * 2006-09-11 2008-03-13 Joseph Lee Garrett Bale lifting device for the handling of bales of fibrous material
US8220560B1 (en) 2011-01-13 2012-07-17 James Laudenklos Tractor-mounted plow blade
CN103052753B (zh) * 2011-08-08 2014-05-21 株式会社小松制作所 轮式装载机
US8672048B2 (en) * 2012-07-30 2014-03-18 Eugene CRUMPLER, JR. Tractor pull bar mounting bracket assembly
US10036138B1 (en) 2017-12-27 2018-07-31 Kubota Corporation Front loader and working machine with left and right wires
US10753063B2 (en) 2017-12-27 2020-08-25 Kubota Corporation Front loader

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554396A (en) * 1968-04-11 1971-01-12 Eugene Demkiw Front end loader
US3610450A (en) * 1969-12-29 1971-10-05 Eugene Demkiw Front end loader and method of forming same
GB2133379A (en) * 1983-01-11 1984-07-25 Sanyo Kiki Kk Device for coupling and uncoupling front loader to agricultural tractor
EP0273299A1 (fr) * 1986-12-23 1988-07-06 Deere & Company Tracteur et chargeur frontal

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US3991890A (en) * 1972-06-07 1976-11-16 F & W Company, Inc. Tractor mounted implement device
US3939997A (en) * 1972-06-07 1976-02-24 F & W Company Inc. Tractor mounted implement device
US4033469A (en) * 1972-06-07 1977-07-05 F & W Company, Inc. Front end loader and method of mounting same on tractor
DE2512721A1 (de) * 1975-03-22 1976-09-23 Kloeckner Humboldt Deutz Ag Ballastgewicht, insbesondere scheibenfoermiges ballastgewicht fuer landund/oder bauwirtschaftlich nutzbare kraftfahrzeuge
JPS52101801A (en) * 1976-02-24 1977-08-26 Caterpillar Mitsubishi Ltd Quick coupler
US4217075A (en) * 1978-02-02 1980-08-12 Frank Eldon M Loader device and method of mounting
DE3151279A1 (de) * 1981-12-24 1983-07-07 Wilhelm Stoll Maschinenfabrik Gmbh, 3325 Lengede "an einen schlepper loesbar anschliessbarer abstellfrontlader"
US4436477A (en) * 1982-03-25 1984-03-13 Farmhand, Inc. Quick attachment carrier assembly
JPS5947757U (ja) * 1982-09-21 1984-03-29 株式会社クボタ 前装作業機の装着装置
AT374857B (de) * 1982-12-06 1984-06-12 Hauer Franz Einrichtung zur loesbaren halterung eines frontladegeraetes an einem fahrzeug
US4637772A (en) * 1984-09-12 1987-01-20 Du-Al Manufacturing Company Loader mount

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554396A (en) * 1968-04-11 1971-01-12 Eugene Demkiw Front end loader
US3610450A (en) * 1969-12-29 1971-10-05 Eugene Demkiw Front end loader and method of forming same
GB2133379A (en) * 1983-01-11 1984-07-25 Sanyo Kiki Kk Device for coupling and uncoupling front loader to agricultural tractor
EP0273299A1 (fr) * 1986-12-23 1988-07-06 Deere & Company Tracteur et chargeur frontal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689536A1 (fr) * 1992-04-07 1993-10-08 Kubota Kk Appareil d'accouplement de dispositif de chargement frontal.

Also Published As

Publication number Publication date
ZA896511B (en) 1991-04-24
DE58902548D1 (de) 1992-12-03
US4936737A (en) 1990-06-26
AU3959489A (en) 1990-03-01
AU610428B2 (en) 1991-05-16
CA1308072C (fr) 1992-09-29
EP0356876B1 (fr) 1992-10-28
EP0356876A3 (en) 1990-03-28

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