EP1170654A2 - Abdeckung zum Umschliessen einer Steuervorrichtung - Google Patents

Abdeckung zum Umschliessen einer Steuervorrichtung Download PDF

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Publication number
EP1170654A2
EP1170654A2 EP01115262A EP01115262A EP1170654A2 EP 1170654 A2 EP1170654 A2 EP 1170654A2 EP 01115262 A EP01115262 A EP 01115262A EP 01115262 A EP01115262 A EP 01115262A EP 1170654 A2 EP1170654 A2 EP 1170654A2
Authority
EP
European Patent Office
Prior art keywords
control
shield
shielding
control lever
spring
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Withdrawn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
EP01115262A
Other languages
English (en)
French (fr)
Other versions
EP1170654A3 (de
Inventor
James Christopher Dunn
Ryan Matthew Lutze
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 EP1170654A2 publication Critical patent/EP1170654A2/de
Publication of EP1170654A3 publication Critical patent/EP1170654A3/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G25/00—Other details or appurtenances of control mechanisms, e.g. supporting intermediate members elastically
    • G05G25/04—Sealing against entry of dust, weather or the like

Definitions

  • the present invention is directed to a shielding for enclosing a control aperture in a control console, a moveable control lever extends through the aperture.
  • the present invention is further directed to a control console for a work vehicle comprising a shielding and to a work vehicle comprising a control console with a shielding.
  • the operator controls a plurality of work operations through manipulating various control levers that control the positioning of hydraulic control valves.
  • the hydraulic control valves in turn regulate the flow of hydraulic fluid to hydraulic cylinders that manipulate the work implement.
  • the operator controls the backhoe by operating two control levers.
  • fore-and-aft movement of the left hand control lever lowers and raises the boom.
  • Side-to-side movement of the left hand control lever moves the boom side-to-side.
  • Fore-and-aft movement of the right hand control lever pivots the dipperstick relative to the boom.
  • Side-to-side movement of the right hand control lever curls and uncurls the bucket relative to the dipperstick.
  • control levers extend upwardly through a control console located in the rear of the operators cab.
  • Each control lever is operatively coupled to a control linkage that manipulates a hydraulic control valve in response to movement of the control lever.
  • each control lever controls two hydraulic control valves.
  • the control console is provided with control apertures through which the control levers pass. These apertures are larger than the diameter of the control lever to allow for pivotal movement of the control lever. To prevent dust, dirt and debris from entering the control console, the control aperture may be covered by a rubber boot that engages the control lever and the edge of the control aperture. In another application steel discs can be welded to the control levers. These steel discs are designed to be located below the control apertures. They are not in contact with the interior wall of the console, as this would restrict the free movement of the control lever.
  • the operation of a work implement is typically controlled by a control lever extending out from a control console.
  • the control console itself comprises a housing having a control aperture through which the control lever extends.
  • the housing has enclosing walls defining an interior that typically houses a portion of the control linkage.
  • the enclosing walls have an interior surface and an exterior surface.
  • a rigid shield having an opening is slidably mounted on the control lever.
  • the rigid shield is provided with a top side that is in free floating contact with the interior surface of the control console housing and a bottom side that faces the control linkage.
  • the free floating contact is maintained by a spring that extends between the control linkage and the bottom side of the shield. The spring biases the shield upwardly so that the top side of the shield is in contact with the interior surface of the housing thereby providing a free floating shield that prevents dust, dirt and debris from entering the console through the control aperture.
  • the shield comprises a circular plastic having a central opening.
  • the spring comprises a coil spring defining an internal cylinder that is aligned with the central opening and through which the control lever extends.
  • the work vehicle 10 illustrated in Figure 1 is a loader backhoe.
  • the work vehicle 10 is provided with a supporting structure 12 and ground engaging means 14 comprising wheels which support and propel the supporting structure 12.
  • ground engaging means 14 of the illustrated embodiment are wheels, the present invention could also be used on tracked work vehicles having steel or rubber tracks.
  • the supporting structure 12 is provided with two work implements, a backhoe 16 and a loader 18.
  • the loader 18 is mounted to the front of the supporting structure 12 and comprises lift arms 20, only one shown, and a bucket 22.
  • the lift arms 20 are provided with lift arm hydraulic cylinders 24, only one shown, for lifting the arms 20 relative to the supporting structure 12.
  • the bucket 22 is pivotally mounted to the end of the lift arms 20.
  • Bucket 22 is provided with a bucket-tilt hydraulic cylinder 26 for tilting the bucket 22 relative to the lift arms 20.
  • the backhoe 16 is mounted to the rear of the supporting structure 12 and comprises a swing frame 21, a boom 23, a dipperstick 25 and a bucket 27.
  • the swing frame 21 is pivotally mounted to the supporting structure 12 about a vertical pivot axis.
  • Swing frame hydraulic cylinders 29 swing the swing frame 21.
  • the boom 23 is pivotally coupled to the swing frame about a horizontal pivot and is raised and lowered by a hydraulic cylinder internally mounted in the boom 23.
  • the dipperstick 25 is pivotally mounted to the boom about a horizontal axis and is pivoted relative to the boom by dipperstick hydraulic cylinder 31.
  • the bucket 27 is curled and uncurled relative to the dipperstick 25 by bucket hydraulic cylinder 33.
  • Hydraulic control valves control the extension and retraction of the hydraulic cylinders.
  • the hydraulic control valves are opened and closed by a mechanical control mechanism comprising control levers and control linkage located inside operators cab 30.
  • a control console 32 is located in the operators cab 30.
  • the control console 32 is provided with two control levers 34 and 36 extending upwardly from the console 32.
  • the left hand control lever 34 controls the positioning of the boom 23.
  • the right hand control lever 36 controls the positioning of the dipperstick 25 and bucket 27.
  • Each control lever 34 and 36 controls two functions by selectively positioning two hydraulic control valves.
  • the control levers 34 and 36 can be moved in two orthogonal directions or control arcs, fore-and-aft and side-to-side. For example, moving the left-hand control lever 34 fore-and-aft lowers and raises the boom 23 by extending and retracting the internally mounted hydraulic cylinder. Moving left-hand control lever 34 side-to-side pivots the swing frame 21 by extending and retracting swing frame hydraulic cylinders 29.
  • the control levers 34 and 36 extend upwardly from hydraulic control linkage 40.
  • the linkage 40 comprises a ball joint 42 that is mounted to the supporting structure 12 of the work vehicle 10.
  • a shelf extending outwardly from the supporting structure 12 is provided with a vertical post on which the ball joint 42 is mounted.
  • Plates 44 each having three downwardly depending tangs 46, 48 and 50 are welded to the bases of the control levers 34 and 36.
  • Tang 46 of the plate 44 is pivotally mounted to the ball joint 42 by bolts 52.
  • Tang 46 is also provided with a downwardly extending control link 54 for controlling a hydraulic control valve.
  • the control link 54 is coupled to the tang 46 by a ball joint 56.
  • tang 48 is coupled to a downwardly extending control link 58 having a ball joint 60 for controlling another hydraulic control valve.
  • Fore-and-aft movement of control levers 34 and 36 manipulates control link 54, whereas side-to-side movement of control lever manipulates control link 58.
  • the three ball joints 42, 56 and 60 define a control plane that is substantially perpendicular to the control levers 34 and 36.
  • Each of the control levers 34 and 36 control two hydraulic control valves, which in turn control two backhoe functions. Therefore it is necessary to restrain the twisting movement of the control lever.
  • tang 50 of the plate 44 is provided with an elongated slot 62.
  • This oblong slot 62 is provided with two side walls 64 and 66.
  • a concave top 68 and a concave bottom 70 link the side walls 64 and 66 to one another.
  • the ball joint 60 has a laterally extending stub shaft 72 that extends into this slot 62. If an operator attempts to twist the control levers 34 and 36 the cylindrical stub shaft 72 comes into contact with the side walls 64 and 66 which restrain this movement.
  • the side walls 64 and 66 are provided with a slider 74 formed of an anti-friction material in the form of a slippery urethane plastic.
  • the slider 74 is of a one-piece construction preformed into a U-shape.
  • the slider 74 has a concave top for engaging the concave top 68 of the elongated slot 62 and legs for engaging the side walls 64 and 66.
  • the slider 74 is provided with a channel that grips the side walls 64 and 66 and the concave top 68 of the elongated slot 62.
  • the slider 74 is further held in place by the cylindrical stub shaft 72. With this design only a cylindrical surface, the cylindrical stub shaft 72, comes into contact with the anti-friction slider 74 thereby preventing premature wear of the slider 74 by eliminating sharp edge contact with the anti-friction material.
  • the control levers 34 and 36 extend upwardly through control apertures 76 in the control console 32.
  • the control apertures 76 are circular and sized to permit pivoting movement of the respective control levers 34 and 36.
  • the control console 32 comprises a housing having an exterior surface 78 and an interior surface 80.
  • the control levers 34 and 36 are provided with a protective shield.
  • the protective shield comprising a rigid circular plastic disc 82 having central opening 84.
  • the rigid disc 82 is slidably mounted on the control levers 34 and 36.
  • the rigid disc 82 has a top side 86 and a bottom side 88.
  • the bottom side 88 is provided with a coil spring 90.
  • the coiled spring 90 defines an internal cylinder that is aligned with the central opening 84 and through which the control levers 34 and 36 extend.
  • the coiled spring 90 extends between the plates 44 of the control linkage 40 and the disc 82.
  • the control console 32 is placed over the control levers 34 and 36 by letting the control levers pass through the respective control apertures 76.
  • the interior surface 80 of the control console 32 comes into contact wit the top side 86 of the rigid disc 82 the coiled spring 90 is compressed downwardly.
  • the rigid disc 82 forming a seal with the interior surface 80 of the control console 32.
  • the rigid discs 82 are larger than the control apertures 76.
  • the discs 82 sized so that the control apertures 76 are sealed by the discs 82 even when the control levers 34 and 36 have been fully pivoted into their most extreme positions.
  • the rigid discs 82 and coiled springs 90 provide a simple shield that is self sealing with the console and also free-floating to conform to the console.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Operation Control Of Excavators (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
EP01115262A 2000-07-07 2001-06-23 Abdeckung zum Umschliessen einer Steuervorrichtung Withdrawn EP1170654A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US612051 1990-11-09
US61205100A 2000-07-07 2000-07-07

Publications (2)

Publication Number Publication Date
EP1170654A2 true EP1170654A2 (de) 2002-01-09
EP1170654A3 EP1170654A3 (de) 2003-04-16

Family

ID=24451506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01115262A Withdrawn EP1170654A3 (de) 2000-07-07 2001-06-23 Abdeckung zum Umschliessen einer Steuervorrichtung

Country Status (2)

Country Link
EP (1) EP1170654A3 (de)
BR (1) BR0102775A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013047558A (ja) * 2011-08-29 2013-03-07 Fuji Heavy Ind Ltd 仕切構造及び変速機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2174504A (en) * 1937-11-17 1939-09-26 Studebaker Corp Transmission
US3971564A (en) * 1974-05-24 1976-07-27 Caterpillar Tractor Co. Environmental seals for multidirectional control levers
EP0647801A1 (de) * 1993-10-08 1995-04-12 JSJ Corporation Schalthebelvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2174504A (en) * 1937-11-17 1939-09-26 Studebaker Corp Transmission
US3971564A (en) * 1974-05-24 1976-07-27 Caterpillar Tractor Co. Environmental seals for multidirectional control levers
EP0647801A1 (de) * 1993-10-08 1995-04-12 JSJ Corporation Schalthebelvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013047558A (ja) * 2011-08-29 2013-03-07 Fuji Heavy Ind Ltd 仕切構造及び変速機

Also Published As

Publication number Publication date
BR0102775A (pt) 2002-04-02
EP1170654A3 (de) 2003-04-16

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