EP2067900A1 - Dispositif stabilisateur de machine - Google Patents

Dispositif stabilisateur de machine Download PDF

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Publication number
EP2067900A1
EP2067900A1 EP07122682A EP07122682A EP2067900A1 EP 2067900 A1 EP2067900 A1 EP 2067900A1 EP 07122682 A EP07122682 A EP 07122682A EP 07122682 A EP07122682 A EP 07122682A EP 2067900 A1 EP2067900 A1 EP 2067900A1
Authority
EP
European Patent Office
Prior art keywords
stabilizer
machine
cross member
legs
leg
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.)
Withdrawn
Application number
EP07122682A
Other languages
German (de)
English (en)
Inventor
Paul A. Sheehan
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.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Priority to EP07122682A priority Critical patent/EP2067900A1/fr
Publication of EP2067900A1 publication Critical patent/EP2067900A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs

Definitions

  • the current disclosure relates to stabilizer arrangements and in particular, but not exclusively, to machine stabilizer arrangements for stabilizing a machine on a surface.
  • Machines such as mobile construction machines may be provided with arrangements for stabilizing and/or leveling a machine.
  • a construction machine such as a backhoe loader is commonly equipped with two work arms for operations such as loading, lifting and digging.
  • a first work arm may be positioned at the front of the machine and tends to be used for operations wherein the machine is mobile such as digging and loading cycles where the machine digs up a material, which is then being driven to for example a lorry awaiting loading.
  • a second work arm may be fitted to the rear of the machine and tends to be used during operations in which the machine remains static such as for example trenching or precision excavation. During such static operations the machine is often supported by a stabilizer arrangement.
  • Stabilizers provided on the machine are then brought into contact with a support surface and the machine may be partially lifted. This may serve several purposes. For example, excavations may generate large downward forces on the machine tyres. To alleviate this the stabilizers may be employed such that the load on the tyres is partially or wholly relieved and transferred onto the stabilizer arrangement. Another example of how the stabilizers my be employed is to level the machine. the machine may not be on level ground which may for example result in an undesirable trench arrangement or an unsafe machine condition. By independently controlling one, two or more stabilizer legs, the machine may then be brought level to overcome the aforementioned issues.
  • One particular regulation may be the maximum width the machine may have whilst on the public road.
  • the machine width may have to be limited to for example a maximum of 2150 mm.
  • This disclosure is aimed at overcoming or alleviating at least some of the problems associated with the prior art.
  • a machine stabilizer arrangement for stabilizing a machine on a surface.
  • the arrangement includes laterally spaced apart first and second surface contact portions associated with first and second stabilizer legs respectively.
  • Each of the first and second stabilizer legs is configured such that the associated surface contact portion is linearly moveable from a first position to a second position such that the lateral spacing between the first and second surface contact portions is greater when both surface contact portions are in their second positions than when both surface contact portions are in their first positions.
  • a machine having a body, at least one stabilizer leg connected to the body for stabilizing said machine on a surface.
  • the stabilizer leg has an end portion for selectively contacting the surface and the stabilizer leg is configured to extend along a linear axis from a retracted position to an extended position thereby moving the end portion away from the body in a generally downward and laterally outwards direction.
  • a method of changing the width of a machine having a stabilizer leg includes positioning a machine having a first machine width on a rest surface and extending a stabilizer leg along a single linear extension axis in a direction of the rest surface and generally sideways relative to the machine thereby achieving a second machine width.
  • Fig. 1 is a schematical representation of an exemplary machine suitable for use in combination with an embodiment of the current disclosure.
  • Fig. 2 is a schematical representation of a rear view of the machine of Fig. 1 with the stabilizer legs extended.
  • Fig. 3 is similar to Fig. 2 except for the stabilizer legs being retracted.
  • the machine 10 may have a body 12.
  • the body 12 may be a single piece or may include a set of subassemblies and or components.
  • the body 10 may include a frame 14, an operator platform 16, a pair of front wheels 18 and a pair of rear wheels 20.
  • the body 12 may provide a first connection 21 for connecting a first work arm 22.
  • the first work arm 22 may be a front mounted loader arm provided with any suitable attachment 24 such as for example a work tool like a bucket.
  • the body 12 may further provide a second connection for connecting a second work arm 30.
  • the second work arm 30 may be rear mounted and may for example include a boom 32, a stick 34 and a linkage 36 for connecting to any suitable attachment 38 such as for example a work tool like a bucket.
  • a hydraulic arrangement 40 may include multiple hydraulic components such as for example a plurality of cylinders 42 and 44. The hydraulic cylinders 42 and 44 may be controlled by an operator from the operator platform 16 via any suitable arrangement so as to operate the attachments 24 and 38 in any desirable manner.
  • the machine 10 may further include a stabilizer arrangement 50.
  • the stabilizer arrangement may be used for leveling the machine 10.
  • the stabilizer arrangement 50 may form part of the body 12, the second work arm 30, be an independent subassembly or a combination of any thereof.
  • Figs. 2 and 3 show a schematic simplified view of the rear end of the machine 10. All components of the work arm 30 have been omitted for clarity.
  • the stabilizer arrangement 50 is also simplified for clarity and may have a frame arrangement generally designated with the numeral 52.
  • the frame arrangement may include an upper cross member 54 and a lower cross member 56. Additional cross members may be provided if preferred.
  • One function of the cross members 54 and 56 may be to carry the second work arm 30.
  • the second work arm 30 may be connected to the cross members 54 and 56 via a so-called side-shift arrangement so as to enable the second work arm 30 to selectively slide over the cross members 54 and 56.
  • An operator can select a suitable position of the second work arm 30 relative to the cross members 54 and 56 to match the requirements of the job.
  • the sliding movement of the second work arm 30 relative to the cross members 54 and 56 may for example be achieved by activation of hydraulic cylinders (not shown) coupled between the second work arm 30 and a component of the stabilizer arrangement 50 or the body 12.
  • the stabilizer arrangement 50 may include at least one stabilizer leg 60.
  • two stabilizer legs 60 are used, which may be spaced apart and located at, or adjacent to, opposite lateral ends 62 and 64 of the frame arrangement 52.
  • Each stabilizer leg 60 may have an outer portion 66 and an inner portion 68 that can slide relative to one another along a linear axis 70.
  • the outer portion 66 may be fixed to the cross members 54 and 56 whilst the inner portion 68 may be slideably engaged with the outer portion 66.
  • An actuator such as a hydraulic cylinder may provide the force for moving the inner portion 68 so as to extend and retract its associated stabilizer leg 60. It is to be understood that the terms extending and retracting encompasses partially extending and partially retracting respectively.
  • Each inner portion 68 may have and end portion 69 that may include a surface contact portion 71 for contacting the rest surface 72. It is to be understood that the inner and outer portions 68, 66 may be reversed such that the inner portion is fixed relative to the cross member 54 and 56.
  • At least one of the stabilizer legs 60 may be angled such that the stabilizer leg 60 and hence the axis of the stabilizer leg 60 is pointing in a direction downwards and laterally outwards away from said body.
  • the stabilizer leg extends simultaneously in a generally downwards and sideways direction.
  • the stabilizer leg retracts simultaneously in a generally upwards and inwards direction.
  • the stabilizer legs 60 and the cross members 54 and 56 form a generally trapezoidal shape whereby the cross members 54 and 56 run substantially parallel to one another and the stabilizer legs 60 are angled such that the lateral distance between the stabilizer legs 60 is greater at the height of the lower cross member 56 than it is at the height of the upper cross member 54.
  • at least one stabilizer leg 60 may be angled relative to at least one of the cross members, for example the lower cross member 56, such that an angle ⁇ between the associated linear axis 70 and the lower cross member 56 is different from 90°.
  • the angle ⁇ between the associated linear axis 70 and the lower cross member 56 is substantially different from 90°.
  • the angle ⁇ may be between 3° and 20° In one embodiment the angle may for example be 7°. It is to be understood that the angle ⁇ between the linear axis 70 and the surface 72 may substantially correspond to the angle ⁇ when the respective cross member and the rest surface 72 are substantially parallel to one another.
  • the stabilizer arrangement 50 for a machine such as machine 10 may be used for changing the overall width of the machine 10 depending on the prevailing conditions.
  • roading conditions may for example be governed by road regulations, limiting the maximum allowable width of the machine 10.
  • work operations such as digging the conditions may depend more on stability requirements thereby utilizing a greater machine width than that allowed during roading.
  • the machine 10 may travel to a job site over the public roads.
  • the operator may select to position the stabilizer leg 60, or as the case may be, stabilizer legs 60, in a first position which may be an at least partially retracted position, the machine thereby having a first machine width.
  • the operator may position the machine on the rest surface 72 whilst the machine 10 still has the first machine width.
  • the operator may desire to at least partially extend the stabilizer leg or legs 60 to a second position so as to stabilize the machine 10, for example, by at least partially lift or level the machine 10 and/or take load of the tyres 20.
  • the stabilizer leg 60 Due to the linear axis 70 being angled, extending the stabilizer leg 60 along the single linear extension axis 70 results in the stabilizer leg 60 and in particular the relevant end portion 69 and surface contact portion 71 traveling in a direction generally towards the rest surface 72 and generally sideways away from the machine 10.
  • the sideways travel component results in achieving a greater machine width, and where two stabilizer legs 60 are provided, in a greater lateral distance between the surface contact portions 71 as compared to when the stabilizer legs 60 are in their first position.
  • the stabilizer legs 60 may be moved back from their second position to their first position thereby once again reducing overall machine width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
EP07122682A 2007-12-07 2007-12-07 Dispositif stabilisateur de machine Withdrawn EP2067900A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07122682A EP2067900A1 (fr) 2007-12-07 2007-12-07 Dispositif stabilisateur de machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07122682A EP2067900A1 (fr) 2007-12-07 2007-12-07 Dispositif stabilisateur de machine

Publications (1)

Publication Number Publication Date
EP2067900A1 true EP2067900A1 (fr) 2009-06-10

Family

ID=39204835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07122682A Withdrawn EP2067900A1 (fr) 2007-12-07 2007-12-07 Dispositif stabilisateur de machine

Country Status (1)

Country Link
EP (1) EP2067900A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2559582A (en) * 2017-02-09 2018-08-15 Edwards Farm Machinery Ltd Side-shift attachment for tractor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033380A (en) 1959-08-03 1962-05-08 Young Spring & Wire Corp Material handling apparatus
US3495727A (en) 1968-01-19 1970-02-17 Long Mfg Co Inc Backhoe
GB1305378A (fr) 1969-02-11 1973-01-31
US3825280A (en) * 1973-08-27 1974-07-23 Caterpillar Tractor Co Adjustable stabilizer support for vehicles
WO1999065726A2 (fr) 1998-06-19 1999-12-23 Dennis Schaenzer Appareil de montage d'outil
US20060104785A1 (en) 2004-09-20 2006-05-18 Roger Vachon Backhoe for all-terrain vehicles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033380A (en) 1959-08-03 1962-05-08 Young Spring & Wire Corp Material handling apparatus
US3495727A (en) 1968-01-19 1970-02-17 Long Mfg Co Inc Backhoe
GB1305378A (fr) 1969-02-11 1973-01-31
US3825280A (en) * 1973-08-27 1974-07-23 Caterpillar Tractor Co Adjustable stabilizer support for vehicles
WO1999065726A2 (fr) 1998-06-19 1999-12-23 Dennis Schaenzer Appareil de montage d'outil
US20060104785A1 (en) 2004-09-20 2006-05-18 Roger Vachon Backhoe for all-terrain vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2559582A (en) * 2017-02-09 2018-08-15 Edwards Farm Machinery Ltd Side-shift attachment for tractor

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