US3623617A - Cargo-handling device having a tilt-adjusting system - Google Patents

Cargo-handling device having a tilt-adjusting system Download PDF

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Publication number
US3623617A
US3623617A US29964A US3623617DA US3623617A US 3623617 A US3623617 A US 3623617A US 29964 A US29964 A US 29964A US 3623617D A US3623617D A US 3623617DA US 3623617 A US3623617 A US 3623617A
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US
United States
Prior art keywords
cam
bed
base
tilt
cam surface
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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.)
Expired - Lifetime
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US29964A
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English (en)
Inventor
Laszlo Nemessanyi
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.)
Tridair Industries Inc
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Tridair Industries Inc
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    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
    • B60P1/30—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element in combination with another movement of the element
    • B60P1/34—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element in combination with another movement of the element the other movement being raising or lowering
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B66F7/0683—Scissor linkage plus tilting action

Definitions

  • cargo unitization which can be in the form of loaded pallets and containers. These pallets and containers have been maximized dimensionally to minimize the total number of shipping units that are handled.
  • the increased dimensions of the shipping units reduce door opening clearances so that loading and off-loading requires an increased amount of time to accurately position the shipping unit so that neither the door frame nor the unit is damaged as the unit moves through the door opening. Therefore, a cargohandling device must accurately position the shipping unit relative to the door opening or to the plane of an adjacent load-bearing surface where there is no door opening.
  • the cargo-handling device must also adjust to the plane surface of the floor when the floor shifts about the roll axis of the airplane during loading and offloading of cargo.
  • a cargo-handling device having a load-supporting bed carried by a base and movable by an elevating means from a first position where the bed and base are parallel to a second position where the bed and base are parallel but spaced apart.
  • a tilt-adjusting system selectively changes the tilt of the bed to a third, nonparallel position and automatically changes the bed to the second parallel position when the elevating means moves the bed from the third nonparallel position to the first parallel position.
  • FIG. I is an elevation view of one form of cargo-handling device, wherein the invention finds particular use, in a first position.
  • FIG. 2 is an elevation view of the cargo-handling device of FIG. 1 in a second position.
  • FIG. 3 is a plan view of the tilt-adjusting system of the inventron.
  • FIG. 4 is an elevation view of the tilt-adjusting system of FIG. 3.
  • FIG. 5 is an elevation view of the cargo-handling device of FIG. I in a third position developed by the tilt-adjusting system of FIG. 3.
  • FIG. 6 is a schematic view of a cargo-handling device such as the device of FIG. 1 in an operating location adjacent a vehicle having a roll characteristic.
  • FIG. 7 is an enlarged elevation view of the tilt-adjusting system of FIG. 3 in one operating position to adjust the tilt of the cargo-handling device of FIG. 6.
  • FIG. 8 is an enlarged elevation view of the tilt-adjusting system of FIG. 3 in another operating position to adjust the tilt of the cargo-handling device of FIG. 6.
  • FIG. 9 is an enlarged elevation view of the tilt-adjusting system of FIG. 3 as the device moves into the first position of FIG. 1.
  • FIG. 1 one form of cargo-handling device 10 is shown wherein the tilt-adjusting system 12 of the present invention can find particular use.
  • the cargo-handling device 10 has a base 14 and a load-supporting bed 16 interconnected by an elevating means such as the crossed scissors legs 18 and 20 which are paired with similar scissors legs (not shown).
  • the scissors legs 18 and 20 are pivotally connected at 22.
  • a linear actuator such as a hydraulic ram 24 acts upon the crossed scissors legs 18 and 20 to lift or move the load-supporting bed 16 from the adjacent position as shown by FIG. I to a spaced apart second position as shown by FIG. 2.
  • Scissors leg 18 is pivotally connected to the load-supporting bed 16 at pivot connection 26 with a suitable roller 28 at the other end adapted to roll in a complementary track on the base 14.
  • Scissors leg 20 is pivotally connected to the base 14 at pivot connection 30 and has a cam follower roller 32 described hereinafter in greater detail.
  • the load-supporting bed 16 In the adjacent or stored position as shown by FIG. I, the load-supporting bed 16 defines a plane which is substantially parallel with a similar plane defined by base 14. Similarly, in the spaced apart or elevated position as shown by FIG. 2, the load-supporting bed 16 again defines a plane which is substantially parallel with the plane defined by the base 14.
  • the tilt-adjusting system 12 has a cam 36 suitably formed into a dogleg configuration such as is shown by FIG. 3 so that the cam develops a predetermined cam surface profile.
  • the cam follower roller 32 engages the cam surface profile of cam 36 and transverses the cam as the scissors legs I8 and 20 are adjusted by the hydraulic ram 24.
  • the cam 36 is rotatably supported at end 40 in a suitable bearing 42. End 44 of cam 36 is connected to one end of a connecting link 46 that is connected to a stub shaft 48. Shaft 48 is rotatably positioned by similar bearings 50, preferably with the longitudinal axis of the stub shaft 48 positioned concentrically with the rotational axis of the cam 36. The rotational axis of the cam 36 extends longitudinally through a first cam portion 52 which is journaled at end 40 in the bearing 42.
  • An actuating rod 54 connected to and extending outwardly from the stub shaft 48 is connected to a yoke 58 that extends from a suitable actuator 60 which is considered to be conventional.
  • the link 46, stub shaft 48, and rod 54 are generally arranged to function mechanically as a bell crank arrangement 56.
  • a second cam portion 62 of cam 36 develops the major portion of the dogleg configuration of the cam. When the cam 36 is rotated about the longitudinal cam axis by the bell crank arrangement, the second cam portion 62 generates an imaginary warped surface.
  • the tilt-adjusting system 12 of the cargo-handling device 10 has been rotated to adjust the tilt or pitch of the load-supporting bed 16 so that the plane defined by the bed is no longer substantially parallel with the plane defined by the base 14.
  • the bell crank arrangement rotates the cam 36 about its longitudinal cam axis and drives the roller or cam follower 32 along the cam surface profile until a desired tilt of the loadsupporting bed 16 is reached.
  • the cargo-handling device 10 with the tilt-adjusting system 12 of the present invention adjusts the tilt of a load-supporting bed when loading or off-loading cargo into or from an adjacent plane surface such as the cargo compartment floor of an airplane as schematically shown by FIG. 6.
  • Airplane has a longitudinally extending roll axis 72 about which the airplane may roll or shift as cargo is loaded or off-loaded.
  • the plane surface defined by the cargo compartment fioor of the airplane is coextensive with the plane surface defined by the load-supporting bed; this coextensive plane is represented by line 74 in FIG. 6.
  • the plane of the floor is tilted.
  • the tilt or pitch of the load-supporting bed 16 is adjusted by the tilt-adjusting system 12 so that the plane of the bed is coextensive with the floor as represented by line 76 in FIG. 6 when the tilt-adjusting system 12 is positioned as shown by FIG. 7.
  • the load-supporting bed 16 in the nonparallel relationship with base 14 as shown by FIG. is automatically returned to the parallel collapsed or stored position as shown by FIG. 1 where the bed 16 is adjacent to the base 14 without the further adjustment of the tilt-adjusting system 12, i.e. rotation of the cam 36 by the bell crank arrangement 56.
  • the load-supporting bed [6 is returned by the elevating system from the third position as shown by FIG. 5 to the first position as shown by FIG.
  • the roller or cam follower 32 traverses the cam surface profile of cam 36 until the cam follower reaches the first cam portion 52 which lays coextensively along and generally concentric with the longitudinal cam axis. Since the first cam portion is substantially parallel with not only the bed 16 but also the base 14, the load-supporting bed 16 is automatically returned to its parallel relationship with the base so that the bed can be collapsed and stored with the base without adjustment of the bell crank arrangement 56 and cor respondingly the cam 36.
  • a cargo-handling device comprising:
  • a lift means adapted to move said bed relative to said base from a first position to a selected second position
  • tilt-adjusting means independent of said lift means for moving said bed from said second position to a predetermined third position so the slope of said bed relative to said base is adjusted
  • said tilt-adjusting means further moving said bed from the slope said third position to the slope of said second position continuously as said lift means moves said bed from said third position through said second position to said first position.
  • said tilt-adjusting means includes:
  • a rotatable cam means defining a longitudinal cam axis and having a predetermined cam surface profile comprismg:
  • first cam surface portion generally concentric with the longitudinal cam axis
  • second cam surface portion generally transverse to said first cam surface portion and rotatable about the cam axis so that an imaginary warped surface is generated as said first and second cam surface portions are rotated
  • actuator means selectively rotating said cam means so that the cam follower engages a predetermined one of said first and second cam surface portions of said cam means and is driven to alter the tilt orientation of said bed relative to said base.
  • support means connected to a selected one of said base and bed to rotatably position said cam means for driven rotation about the cam axis.
  • said lift means is a scissors linkage having at least first and second paired members pivotally and movably positioned between and in selective engagement with said base and said bed.
  • a rotatable cam means connected to a selected one of the bed and base, said cam means having a predetermined cam surface profile including:
  • an actuator means selectively rotating said cam means so that the cam follower engages a predetermined one of said first and second cam surface portions of said cam means and alters the orientation of the bed relative to the base.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Loading Or Unloading Of Vehicles (AREA)
  • Handcart (AREA)
US29964A 1970-04-20 1970-04-20 Cargo-handling device having a tilt-adjusting system Expired - Lifetime US3623617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2996470A 1970-04-20 1970-04-20

Publications (1)

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US3623617A true US3623617A (en) 1971-11-30

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US29964A Expired - Lifetime US3623617A (en) 1970-04-20 1970-04-20 Cargo-handling device having a tilt-adjusting system

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US (1) US3623617A (enExample)
JP (1) JPS5148347B1 (enExample)
CA (1) CA945984A (enExample)
GB (1) GB1332987A (enExample)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917076A (en) * 1972-12-01 1975-11-04 Duncan Islay Campbell Trolleys
US4417841A (en) * 1980-07-30 1983-11-29 Hydraulics & Fabrications Pty. Ltd. Loader and transporter
DE3816382A1 (de) * 1988-05-13 1989-11-23 Hydro Geraetebau Gmbh & Co Kg Hilfsgeraet fuer eine be- und entladevorrichtung fuer flugzeuge
EP0378034A1 (fr) * 1989-01-10 1990-07-18 Jige Lohr Wreckers, S.A. Dispositif de basculement d'un plateau de chargement
US5018931A (en) * 1989-07-26 1991-05-28 Children's Hospital Of Eastern Ontario Method and apparatus for handling infant transport incubators
US5160237A (en) * 1991-03-11 1992-11-03 Lutz David W Apparatus for loading and unloading objects
US5174711A (en) * 1990-02-16 1992-12-29 Mercedes-Benz Ag Tilting and lifting apparatus for vehicle bodies
US5328320A (en) * 1991-11-22 1994-07-12 J. Thomas Farrow Apparatus for lifting a heavy load with respect to the bed of a truck
US5460460A (en) * 1994-03-01 1995-10-24 The Serco Corporation Scissors lift dock leveler
US5542806A (en) * 1995-03-31 1996-08-06 The Champion Company Fluid actuated lifting and tilting device
US6010296A (en) * 1997-12-02 2000-01-04 Enders; Bruce G. Seat stowage cart for a removable vehicle seat
US6390278B1 (en) 2000-08-29 2002-05-21 Edmund W. Brown Transfer mechanism for multiple level conveyor
US20040115034A1 (en) * 2002-11-08 2004-06-17 Seppo Arijoki Apparatus and method for loading and unloading aircraft cargo
US20070057477A1 (en) * 2005-09-09 2007-03-15 Topper Industrial, Inc. Tugger cart with tiltable platform
US20080109084A1 (en) * 2006-11-02 2008-05-08 University Of South Florida Confirming Artificial Finger Mechanism
US20110142583A1 (en) * 2008-08-19 2011-06-16 Patrick Quirion Cargo loader for an aircraft with adjusting mechanism
CN105078503A (zh) * 2014-05-13 2015-11-25 西门子公司 可倾斜的患者支承装置和用于倾斜患者支承装置的方法
US9724833B1 (en) * 2015-05-15 2017-08-08 Nutech Ventures Shape-adaptive mechanism for robotic grasping
CN108045288A (zh) * 2017-12-27 2018-05-18 朱宗华 一种装卸车液压升降装置
US20190070052A1 (en) * 2017-09-07 2019-03-07 Todd Humbert Lift And Tilt Support Apparatus
CN116768120A (zh) * 2023-06-25 2023-09-19 浙江中信检测有限公司 一种可进行防撞警示的智能登高车及其使用方法
US12071059B2 (en) * 2020-03-06 2024-08-27 Howe & Howe Inc. Controlling attachment of equipment to a vehicle deck
US12240743B2 (en) 2023-03-22 2025-03-04 SAFE Structure Designs, LLC Cargo loader
US20250143655A1 (en) * 2023-11-02 2025-05-08 Fujifilm Corporation Bed apparatus and medical diagnostic system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5619186A (en) * 1985-04-17 1986-10-23 Wright, H.S. A lifting platform
GB2404369B (en) * 2003-07-31 2005-12-07 Proto Magic Innovations Ltd Low profile mattress elevator
CN106938830B (zh) * 2017-01-22 2023-06-06 广西大学 货物运载装置
CN109911806B (zh) * 2019-03-29 2024-01-23 成都立航科技股份有限公司 一种垂直举升俯仰调节一体举升机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1003239A (en) * 1963-06-19 1965-09-02 British Cellophane Ltd Apparatus for transporting and handling articles
US3361409A (en) * 1966-12-12 1968-01-02 Myron R. Stahl Hydraulic jack having lifting beam forces applied by rollers to provide for horizontal movement
US3382988A (en) * 1967-03-06 1968-05-14 Noel A. O'reilly Portable panel hoist

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1003239A (en) * 1963-06-19 1965-09-02 British Cellophane Ltd Apparatus for transporting and handling articles
US3361409A (en) * 1966-12-12 1968-01-02 Myron R. Stahl Hydraulic jack having lifting beam forces applied by rollers to provide for horizontal movement
US3382988A (en) * 1967-03-06 1968-05-14 Noel A. O'reilly Portable panel hoist

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917076A (en) * 1972-12-01 1975-11-04 Duncan Islay Campbell Trolleys
US4417841A (en) * 1980-07-30 1983-11-29 Hydraulics & Fabrications Pty. Ltd. Loader and transporter
DE3816382A1 (de) * 1988-05-13 1989-11-23 Hydro Geraetebau Gmbh & Co Kg Hilfsgeraet fuer eine be- und entladevorrichtung fuer flugzeuge
EP0378034A1 (fr) * 1989-01-10 1990-07-18 Jige Lohr Wreckers, S.A. Dispositif de basculement d'un plateau de chargement
US5018931A (en) * 1989-07-26 1991-05-28 Children's Hospital Of Eastern Ontario Method and apparatus for handling infant transport incubators
US5174711A (en) * 1990-02-16 1992-12-29 Mercedes-Benz Ag Tilting and lifting apparatus for vehicle bodies
US5160237A (en) * 1991-03-11 1992-11-03 Lutz David W Apparatus for loading and unloading objects
US5328320A (en) * 1991-11-22 1994-07-12 J. Thomas Farrow Apparatus for lifting a heavy load with respect to the bed of a truck
US5460460A (en) * 1994-03-01 1995-10-24 The Serco Corporation Scissors lift dock leveler
US5542806A (en) * 1995-03-31 1996-08-06 The Champion Company Fluid actuated lifting and tilting device
US6010296A (en) * 1997-12-02 2000-01-04 Enders; Bruce G. Seat stowage cart for a removable vehicle seat
US6390278B1 (en) 2000-08-29 2002-05-21 Edmund W. Brown Transfer mechanism for multiple level conveyor
US20060289278A1 (en) * 2000-08-29 2006-12-28 Brown Edmund W Transfer mechanism incorporating dampening cylinder
US20040115034A1 (en) * 2002-11-08 2004-06-17 Seppo Arijoki Apparatus and method for loading and unloading aircraft cargo
US20070057477A1 (en) * 2005-09-09 2007-03-15 Topper Industrial, Inc. Tugger cart with tiltable platform
US7497448B2 (en) 2005-09-09 2009-03-03 Brown Edmund W Tugger cart with tiltable platform
US7614673B2 (en) * 2006-11-02 2009-11-10 University Of South Florida Conforming artificial finger mechanism
US20080109084A1 (en) * 2006-11-02 2008-05-08 University Of South Florida Confirming Artificial Finger Mechanism
US20110142583A1 (en) * 2008-08-19 2011-06-16 Patrick Quirion Cargo loader for an aircraft with adjusting mechanism
US8425174B2 (en) * 2008-08-19 2013-04-23 Tld (Canada) Inc. Cargo loader for an aircraft with adjusting mechanism
US10813815B2 (en) 2014-05-13 2020-10-27 Siemens Healthcare Gmbh Tiltable patient-supporting apparatus and method of tilting a patient-supporting apparatus
CN105078503A (zh) * 2014-05-13 2015-11-25 西门子公司 可倾斜的患者支承装置和用于倾斜患者支承装置的方法
CN105078503B (zh) * 2014-05-13 2018-01-05 西门子公司 可倾斜的患者支承装置和用于倾斜患者支承装置的方法
US9724833B1 (en) * 2015-05-15 2017-08-08 Nutech Ventures Shape-adaptive mechanism for robotic grasping
US20190070052A1 (en) * 2017-09-07 2019-03-07 Todd Humbert Lift And Tilt Support Apparatus
US10667971B2 (en) * 2017-09-07 2020-06-02 Todd Humbert Lift and tilt support apparatus
CN108045288A (zh) * 2017-12-27 2018-05-18 朱宗华 一种装卸车液压升降装置
US12071059B2 (en) * 2020-03-06 2024-08-27 Howe & Howe Inc. Controlling attachment of equipment to a vehicle deck
US12240743B2 (en) 2023-03-22 2025-03-04 SAFE Structure Designs, LLC Cargo loader
CN116768120A (zh) * 2023-06-25 2023-09-19 浙江中信检测有限公司 一种可进行防撞警示的智能登高车及其使用方法
US20250143655A1 (en) * 2023-11-02 2025-05-08 Fujifilm Corporation Bed apparatus and medical diagnostic system

Also Published As

Publication number Publication date
CA945984A (en) 1974-04-23
GB1332987A (en) 1973-10-10
JPS5148347B1 (enExample) 1976-12-20

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