EP0859089A1 - Dispositif de verrouillage ou de déverrouillage d'un outil sur un cadre de support d'outils d'un chargeur compact - Google Patents

Dispositif de verrouillage ou de déverrouillage d'un outil sur un cadre de support d'outils d'un chargeur compact Download PDF

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Publication number
EP0859089A1
EP0859089A1 EP98102313A EP98102313A EP0859089A1 EP 0859089 A1 EP0859089 A1 EP 0859089A1 EP 98102313 A EP98102313 A EP 98102313A EP 98102313 A EP98102313 A EP 98102313A EP 0859089 A1 EP0859089 A1 EP 0859089A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
skid steer
steer loader
locking bolt
locking
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
EP98102313A
Other languages
German (de)
English (en)
Other versions
EP0859089B1 (fr
Inventor
Jürgen Warthold
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.)
WARTHOLD, JUERGEN
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 EP0859089A1 publication Critical patent/EP0859089A1/fr
Application granted granted Critical
Publication of EP0859089B1 publication Critical patent/EP0859089B1/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
    • E02F3/28—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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Definitions

  • the invention relates to a skid steer loader with two hydraulically raised and lowered lifting arms, at the front ends of which they are received a tool by means of swivel bolts a tool holder frame is articulated, the means for holding the tool used as well Has locking bolt for locking or unlocking.
  • Skid steer loaders are small wheel loaders that are located in the front area at the end of the Lift arms an essentially vertical tool holder frame have, which is pivotable about horizontal pivot pin to this articulated, can be pivoted using a hydraulic cylinder can.
  • Various tools such as., Can be attached to the mounting frame Gripping tongs, pallet or pitchfork, gravel shovel, etc., attached and with the help of locking bolts in aligned holes of the tool holder frame and the corresponding extension of the tool are used, locked.
  • the lifting arms which can be raised and lowered hydraulically, are from the rear Area along the side of the driver's cab, which entails considerable dangers for the driver, the ones to be cut Force safety precautions:
  • the driver's cab is mostly covered by a wire mesh on the side, a seat switch and other devices ensure that the skid steer including hydraulics and lifting equipment is shut down if the driver rises from his driver's seat.
  • the locking bolts must be set and released by hand, the driver must Change or pick up a tool the skid steer leave, put the locking bolts and back onto the skid steer the seat switch sets the hydraulics quiet. This activity is therefore time consuming and is due to the necessary descent and ascent also associated with dangers. target the invention is therefore to develop the generic device so that a quick and safe setting down, changing or Picking up the tool is possible.
  • the locking bolts are by means of a pressure cylinder Hydraulic fluid branched on-board hydraulics can be actuated.
  • mechanical coupled locking bolt is enough for a pressure cylinder a coupled group; is missing the mechanical coupling, is for everyone Locking bolt provided a pressure cylinder.
  • the hydraulic cylinder (s) the hydraulic fluid is drilled through holes the pivot pin that links the tool holder frame to the lifting arms fed; this allows permanently installed connections outdoors; Swiveling movements can occur within the tool holder frame be compensated via hose connectors; are advantageous here rotary connections.
  • Skid steer loader taken into account: those for the connection of the pressure cylinder (s) necessary hydraulic connection lines can not to be damaged; an impairment of the driver's view not applicable.
  • Fig. 1 shows schematically a on the front area of a (not shown) Compact loader arranged lifting device 10 with two hydraulically lifting and lowering lifting arms 11 and 12, of which Fig. 1st shows the right lifting arm 12 in the direction of travel with details; of the left in the direction of travel has broken out.
  • a tool holding frame 15 At the ends of the two Lifting arms 11 and 12 are provided with a tool holding frame 15, the one with a horizontally arranged transverse to the direction of travel Swivel pin 18 is articulated to the lifting arms 11 and 12.
  • the tool holder frame 15 is by means of a (only indicated) Hydraulic cylinder 13, with its piston rod 14 a crossbar 17 of the tool holder frame 15 engages to the Swivel pin 18 swiveling so that it is both in the receiving or Settling position can also be brought into the working position.
  • the tool holder frame 15 has a wedge shape in its upper region trained receptacles 32 for the tool 16 that with an extension piece 30, which the wedge-shaped receptacles 32 of the tool holder frame 15 engages with its holder hook 31, provided is.
  • On its underside is the extension piece 30 with oblique struts 33 provided, which are also inclined against the Place lower edges 35 of the tool holder frame 15.
  • Tool holder frame 15 and extension 30 are with the help of at least two arranged laterally on the tool holder frame Locking bolt 34 locked or unlocked.
  • the locking bolt 34 via pressure cylinder 40, the via the hydraulic connecting lines connected to the pivot bolts 18 55 and for actuating the locking bolts 34 suitable control switches 58 in the driver's cabin with the on-board hydraulics (see Fig. 7) are connected, operable.
  • the locking bolts 34 (see FIG. 1) for reasons of space near the front area of the tool holder frame 15 arranged; they are therefore using a Force deflection device 38 out of the locking position moved into the unlocked position and vice versa.
  • the pivot pin 18 is on one side through a bore 20 in one the lifting arms (here lifting arm 12 - the same applies to lifting arm 14) and one further hole in the side wall of the tool holder frame 15 guided; the end of the tool holder frame 15 assigned Swivel pin is conical (Fig. 2a) and corresponding in the conically shaped bore 22 in the tool holder frame 15 lockable.
  • An outer, with (indicated) screws 19.1 fixed locking plate 19 engages over the reduced diameter lifting arm end of the pivot pin 18 and secures its position.
  • the receiving side assigned to the tool holding frame 15 End of the pivot pin 18 emerges from this.
  • the pivot pin 18 is provided with a through axial bore 52 in the lifting arm side End of a screw connection 18.1 for the hydraulics forms.
  • the end on the receiving frame side has an output 18.2 for a hydraulic coupling.
  • the pivot pin 18 is cylindrical Insert body formed (Fig. 2b). One with screws 19.1 fixed plate 19 holds it in position.
  • the inner end of the Swivel pin 18 is rotatably mounted in a bushing 25 and by means of a seal 25.1 sealed against the escape of grease; this inner end is further with a hydraulic fitting 18.2 provided to which a (not shown) hose is connected, via which the hydraulic fluid to the pressure cylinder 40 is forwarded.
  • pivot shaft 50 Provided pivot shaft 50, the ends of which form the pivot bolts 18 through the bores 20 and 21 of the lifting arms 11 and 12 as well of the side walls of the tool holder frame 30 and - because the through cylindrical bolt holes - on both sides with the the reduced-diameter ends of the pivot pins on the lifting arm side 18 overlapping and fixed with (indicated) screws 19.1 Locking plates 19 are fixed. With these pivot bolts 18th the tool holder frame is articulated on the lifting arms 11 and 12.
  • the hydraulic supply is analogous: if the pressure cylinder 40 is single-acting, an axial bore 52 is sufficient; however it is double acting, a pair of opposing axial bores 52 provided, it being understood that the Hydraulic output from the pivot shaft 50 set up accordingly is.
  • the output connections are 18.2 directly at the mouths of the radial bores 63 on the Shell of the pivot shaft 50 placed.
  • a rotatable one is advantageous Removal sleeve 60, the continuous pivot shaft 50 in the area which covers radial bores 53 opening into the grooves 53.1, and which decouples the pivoting movement.
  • This Removal sleeve 60 can correspond to the annular grooves 53.1 of the pivot shaft 50
  • Have annular grooves 61 which with radial bores 62 the hydraulic outlet screw connections placed on the outer surface of the removal sleeve 60 18.2 are connected.
  • Inner ring seals 64 ensure that the grooves 53.1 / 61 both against each other as well as sealed from the outside.
  • Arranged locking disks 65 secure the position of the removal sleeve 60.
  • a mechanical linkage in the form of a V-shaped yoke is used (Fig. 4), a U-shaped yoke (Fig. 5) or a seesaw with one Lever used (Fig. 6 shows only a one-armed lever, Two-armed levers are to be arranged accordingly - without restriction thereon).
  • the locking device 38 with locking bolts 34 has a fixed to the tool holder frame 15 and supported, hydraulically operated (initially as single-acting assumed) pressure cylinder 40 on the hydraulic connecting lines 56 and 55 connected to the on-board hydraulics of the skid steer loader is.
  • the Axis of the pressure cylinder 40 parallel to that of the locking bolt 34 offset, which is actuated via a power transmission device 38 becomes.
  • Both the hydraulic lines 56 supplying the pressure cylinders 40 are to synchronize the movement of the locking bolts 34 from a hydraulic distributor connected downstream of the hydraulic outlet 18.2 57 derived.
  • the unlocking movement is controlled by pressure and the locking movement from a tensioned during the locking movement
  • Return spring causes, this spring also arranged in the pressure cylinder can be.
  • the power transmission device 38 is transfer the movement of the pressure cylinder 40 to a V-shaped yoke, to which the piston rod 40.1 of the pressure cylinder 40 is connected is.
  • One leg 41 of the yoke goes into the locking bolt 34 over, during which other leg 42 one to Locking bolt 34 parallel guide rod 48 has to avoid edges or jamming in a guide 49 is performed.
  • the yoke is U-shaped. The apex of the U-bend 43 stands with the Piston rod 40.1 in connection and transmits its movement the locking bolt 34 and the guide rod 48.
  • the movement of the pressure cylinder 40 is transferred to a rocker 45:
  • the piston rod 40.1 acts on the short lever arm 46 of a lever (shown with one arm), the long lever arm 47 cooperates with the locking bolt 34.
  • the lever pivoting movement is the locking bolt 34 to the lever via the sliding block in slot 47.1 articulated, which takes into account the pivoting movement.
  • a short-stroke cylinder requires a short lever arm 46 while the locking pin 34 on the long lever arm 47 the longer way to unlock is possible, the higher force can be applied by hydraulic cylinders.
  • gear translations can adapt path and strength to local conditions with the axes of the impression cylinder 40 and the locking bolt 34 can also be at an angle to each other.
  • gear instead of an intermediate one Gear also provide a chain of several gears.
  • a guide 49 avoiding jamming is provided, in FIG the extension of the locking bolt to avoid jamming is led.
  • the force deflection device with a force accumulator is advantageous provided, which is tensioned when locking, and which in the event of failure the hydraulic lock bolt in the locked position transferred or detained. So an unintentional loosening of the prevented tool in the event of hydraulic failure and the Operational safety increased; such an energy store is, for example a spring 37.
  • piston rod 40.1 is retracted, it lifts the yoke with its leg 42 or with the U-bend 43 and thus the locking bolt 34 from the hole 36 in the extension 30 of the tool 16 is released.
  • the pressure cylinder 40 is a double-acting hydraulic cylinder formed, the piston of the pressure cylinder of hydraulic fluid is applied to both sides. In this Fall can be both unlocked by pulling the locking bolt 34 as described above, as well as locking Set the locking bolt 34 hydraulically.
  • springs 37 which are advantageously arranged externally and can thus be monitored are provided, supported on one side with an abutment 37.1, to a movable part of the force deflection device 38 Act.
  • the spring 37 is a compression spring that when unlocking is tensioned, and the relaxing when the pressure drops the yoke with the locking bolt 34 in the locking position presses.
  • the spring 37 is designed as a tension spring engages the arch 43 of the yoke and is tensioned when unlocking. In the event of pressure loss, this spring 37 shows the yoke with locking bolts 34 in the locked position.
  • FIG. 5 Spring 37 designed as a tension spring and with its fixed end on the Guide 49 supported while the free end with the extension 48 connected, the movement of which is taken along.
  • this Spring 37 visibly stretched and unlocked when unlocked.
  • the spring 37 is designed as a compression spring and with her fixed end supported on a frame-fixed abutment 37.1, while their free end from the head of the extension 48 of the locking bolt 34 is taken away.
  • the spring 37 can be seen here compressed when unlocking and so tense.
  • the tense Spring 37 pulls the guide rod in the event of hydraulic or pressure failure 48 and with it the locking bolt 34 in the locking position.
  • FIG. 7 finally shows a circuit diagram for the on-board hydraulics with connected pressure cylinder 40 for unlocking or locking the tool using the locking bolt 34.
  • Hydraulic fluid is stored in a memory by the hydraulic pump 59 of the on-board hydraulics 59.1 funded over several exits (only one is shown here) disposes.
  • the hydraulic cylinders 40 for unlocking and locking of a tool are controlled here with the 4/2 control valve 58.
  • the control valve 58 supplies the connecting line 55, via the hydraulic fluid under pressure through the axial bore 52 in the pivot pin 18 and the hydraulic connection line 56 and the hydraulic distributors 51, which split into two branches, the pressure cylinders 40 is supplied.
  • the pistons are moved and the piston rods 40.1 (according to Fig. 1) retracted or extended. Pressure relief by switching valve 58, the direction of movement is reversed (if necessary via internal springs) and leaves the piston in the starting position go back.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Manipulator (AREA)
  • Agricultural Machines (AREA)
  • Actuator (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP98102313A 1997-02-15 1998-02-11 Dispositif de verrouillage ou de déverrouillage d'un outil sur un cadre de support d'outils d'un chargeur compact Expired - Lifetime EP0859089B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29702648U DE29702648U1 (de) 1997-02-15 1997-02-15 Vorrichtung zur Ver- und Entriegelung eines Werkzeugs an einem Werkzeug-Aufnahmerahmen von Kompaktladern
DE29702648U 1997-02-15

Publications (2)

Publication Number Publication Date
EP0859089A1 true EP0859089A1 (fr) 1998-08-19
EP0859089B1 EP0859089B1 (fr) 1999-07-07

Family

ID=8035997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98102313A Expired - Lifetime EP0859089B1 (fr) 1997-02-15 1998-02-11 Dispositif de verrouillage ou de déverrouillage d'un outil sur un cadre de support d'outils d'un chargeur compact

Country Status (5)

Country Link
US (1) US5967738A (fr)
EP (1) EP0859089B1 (fr)
AT (1) ATE181979T1 (fr)
CA (1) CA2216299A1 (fr)
DE (3) DE29702648U1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6425730B1 (en) * 1999-02-11 2002-07-30 Clark Equipment Company Load bearing pivot assembly providing a fluid path
IT1310182B1 (it) * 1999-03-02 2002-02-11 Mantovanibenne S R L Dispositivo per il bloccaggio e lo sbloccaggio rapidi di attrezzi abracci operatori.
US6390765B1 (en) * 2000-04-10 2002-05-21 Dennis J Dick Power latched quick change attachment coupler for skid steer vehicles
US6866467B2 (en) 2000-11-29 2005-03-15 Caterpillar S.A.R.L. Hydraulically actuated quick coupling device
US6305106B1 (en) 2001-02-23 2001-10-23 Mclellan Robin S. Apparatus for releasably coupling an attachment to an excavator
US6604752B1 (en) 2002-04-05 2003-08-12 Ronald F. Gerres Front end hydraulic hitch attachment
JP4116369B2 (ja) * 2002-08-30 2008-07-09 株式会社小松製作所 ピン組立体及び作業機連結装置
US7152640B1 (en) 2003-10-15 2006-12-26 Williams Larry L Tree cutting attachment for a skid steerloader
FR2869054B1 (fr) * 2004-04-14 2006-07-07 Etude Et D Innovation Dans Le Dispositif de verrouillage d'un outil sur le cadre porte-outil d'un chargeur, notamment a usage agricole.
US7290977B2 (en) * 2005-03-09 2007-11-06 Clark Equipment Company Powered coupling of attachment hydraulics

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1417257A (fr) * 1964-09-28 1965-11-12 Poclain Sa Dispositif de verrouillage en position, utilisable notamment pour la fixation rapided'un outil de travail sur une pelle hydraulique
US3269570A (en) * 1964-03-14 1966-08-30 Kewacos Forsaljnings Aktiebola Device for fastening working tools on lifting levers of loading trucks
US3818551A (en) * 1973-02-27 1974-06-25 Rome Industries Quick hitch assembly
US4439938A (en) * 1980-11-17 1984-04-03 Envirotech Corporation Coupling mechanism
EP0273828A1 (fr) * 1986-12-26 1988-07-06 Ardennes Equipment S.A. Dispositif d'attache rapide pour équipements d'engins de génie civil et de manutention
US4850790A (en) * 1988-06-27 1989-07-25 J. I. Case Company Hydraulically actuated coupler for industrial, agricultural, or earth-moving vehicle
EP0474520A1 (fr) * 1990-09-07 1992-03-11 Huard S.A. Dispositif d'accrochage d'un outil à l'attelage trois points d'un tracteur
US5147173A (en) * 1991-06-03 1992-09-15 Caterpillar Inc. Coupling device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705656A (en) * 1971-02-18 1972-12-12 Deere & Co Quick-attach loader bucket
US5049027A (en) * 1990-02-21 1991-09-17 Komatsu Dresser Company Hydro-electric tool lock
US5403144A (en) * 1993-04-23 1995-04-04 Staben, Jr.; Frank P. Blade tilt assembly for a front end loader

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269570A (en) * 1964-03-14 1966-08-30 Kewacos Forsaljnings Aktiebola Device for fastening working tools on lifting levers of loading trucks
FR1417257A (fr) * 1964-09-28 1965-11-12 Poclain Sa Dispositif de verrouillage en position, utilisable notamment pour la fixation rapided'un outil de travail sur une pelle hydraulique
US3818551A (en) * 1973-02-27 1974-06-25 Rome Industries Quick hitch assembly
US4439938A (en) * 1980-11-17 1984-04-03 Envirotech Corporation Coupling mechanism
EP0273828A1 (fr) * 1986-12-26 1988-07-06 Ardennes Equipment S.A. Dispositif d'attache rapide pour équipements d'engins de génie civil et de manutention
US4850790A (en) * 1988-06-27 1989-07-25 J. I. Case Company Hydraulically actuated coupler for industrial, agricultural, or earth-moving vehicle
EP0474520A1 (fr) * 1990-09-07 1992-03-11 Huard S.A. Dispositif d'accrochage d'un outil à l'attelage trois points d'un tracteur
US5147173A (en) * 1991-06-03 1992-09-15 Caterpillar Inc. Coupling device

Also Published As

Publication number Publication date
ATE181979T1 (de) 1999-07-15
DE29716034U1 (de) 1998-03-26
CA2216299A1 (fr) 1998-08-15
DE29702648U1 (de) 1997-04-03
DE59800011D1 (de) 1999-08-12
EP0859089B1 (fr) 1999-07-07
US5967738A (en) 1999-10-19

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