US3075665A - Adjustable load engaging means for lift truck - Google Patents

Adjustable load engaging means for lift truck Download PDF

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Publication number
US3075665A
US3075665A US73718A US7371860A US3075665A US 3075665 A US3075665 A US 3075665A US 73718 A US73718 A US 73718A US 7371860 A US7371860 A US 7371860A US 3075665 A US3075665 A US 3075665A
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US
United States
Prior art keywords
load
pair
engaging means
transversely
pivot member
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.)
Expired - Lifetime
Application number
US73718A
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English (en)
Inventor
Edward P Repke
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.)
Doosan Bobcat North America Inc
Original Assignee
Clark Equipment 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 Clark Equipment Co filed Critical Clark Equipment Co
Priority to US73718A priority Critical patent/US3075665A/en
Priority to FR877138A priority patent/FR1304539A/fr
Priority to BE609794A priority patent/BE609794A/fr
Application granted granted Critical
Publication of US3075665A publication Critical patent/US3075665A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • 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
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other

Definitions

  • the fork tines be fully adjustable transversely of the truck, as well as being pivotable about a transverse horizontal axis. It is known to mount such fork tines for pivotable movement as aforesaid and to provide limited lateral adjustment therefor, but to my knowledge no prior mounting construction of the type contemplated provides for full lateral adjustment of pivoted fork tines.
  • Another object of the invention is to provide an irnproved fork tine mounting construction associated with the lifting carriage of a lift truck in which separate means are provided for the support of and for the pivot suspension of the fork tines.
  • Another object of the invention is to provide a generally improved mounting construction for fork tines or other load engaging means of lift trucks.
  • a lifting carriage which is associated with a mast construction of a lift truck in known manner and which provides a transverse load supporting beam, a transverse pivot shaft adjacent the beam, transversely movable load supporting bracket means connecting the beam and pivot shaft, and a pair of fork tines suspended from the pivot shaft and movable transversely with the bracket means from a position adjacent one side of the carriage to a position adjacent the opposite side thereof.
  • FGURE 1 is a partial view in perspective of the forward end of a lift truck having the mounting construction of the present invention associated with the lifting carriage thereof;
  • FIGURE. 2 is a side view in partial section of the lifting mast and fork mounting construction shown in PEG- URE l.
  • a telescoping lifting mast construction of a lift truck is illustrated at numeral and is pivotally supported from and forwardly of a drive axle, not shown, and intermediate a pair of drive wheels 12 which are mounted at opposite ends of the drive axle.
  • a pair of laterally spaced tilt cylinders 14 are connected to the truck and to the lifting mast for pivoting the mast about the drive axle.
  • a portion of the body construction of the lift truck is shown at numeral 16.
  • the mast construction may be like that which is de scribed in detail in copending continuation application Serial No. 111,076, tiled May 18, 1961, in the names of Hastings and Backofen (common assignee). As illustrated herein it comprises a pair of transversely spaced inwardly opening fixed channel members i8 supported, as aforesaid, upon the drive axle of the truck, a pair of partially nested transversely spaced and elevatable l-beam sections Z0 mounted for telescoping vertical movement relative to the fixed beams 1S and offset forwardly thereof so that the forward flanges of the I-beams overlap the forward iianges of channel beams 13, and an upright hydraulically actuated cylinder motor hoist 22 intermediate of I-beams 2t).
  • Hoist motor 22 is pivotally mounted at its lower end upon a transverse pin 24 which is supported in a pair of transversely spaced plates 26, one of which is shown in FiGURE 2. Plates 26 are supported upon a horizontal plate member 23 which connects the lower ends of the beams 1S. In the interest of clarity, only the base end of hoist motor 22 is illustrated in FIG- URE 2, and guide roller members which are connected between beam members 2d' and 18 for supporting the telescoping l-beams in channel members 18 are not shown in FiGURE 2.
  • a carriage and fork mounting assembly 3d which is supported from the I-beams 20 for vertical movement along mast it), being connected to hoist motor 22 in conventional manner by means of a pair of lifting chains 32 which are secured to the carriage construction at the one ends thereof by a pair of bracket members 34 and to a fixed portion of the mast at the other ends thereof.
  • Chains 32 extend over rotatable sprockets, not shown, which are connected to the upper end of the piston rod of hoist motor 22.
  • the carriage assembly comprises a pair of laterally spaced and vertically extending end frame members 36 interconnected by a pair of vertically spaced and transversely extending beams 38 and 40 and a pivot shaft 42 spaced slightly forwardly of and beneath beam 40.
  • Shaft 4Z is preferably mounted at its opposite ends in resilient support rings d3 located in end members 36.
  • Intermediate end members 36 is located a pair of transversely spaced and rearwardly extending carriage support plates dd which are securely connected to transverse beams 3S and 4t).
  • each support plate 44 Secured to the rearward outer portion of each support plate 44 is a pair of vertically spaced rollers 46- which are mounted for registry with the inner-facing channel portions of I-beams Ztl for supporting the carriage assembly in the mast assembly 10 for vertical guided movement with respect thereto.
  • Support plates 44 are connected intermediate the upper and lower ends thereof by a pair of vertically spaced and transversely extending plate members 48, which are in turn connected together by a vertically extending beam located centrally between plates 44 and secured at the lower end to beam 38.
  • An additional transversely extending plate member 52 connects support plates 44 adjacent the upper ends thereof.
  • An additional pair of mounting plate members 54 are secured along inner edges thereof to the forward outer surface portion of support plates 44, and extend transversely outwardly thereof for receiving vertically spaced pairs of side thrust rollers 56 which are mounted for rolling engagement with the overlapping outer edge portions of the forward flanges of I-beams 20.
  • each support plate 44 terminates in a downwardly diagonally extending surface 64, and main transverse support beam member 4t), which is shown of rectangular cross-section, is secured rigidly to each surface 64, as by welding, on the lower long side of the section. Beam 4t) is also secured at its opposite ends to carriage frame members 36.
  • a pair of generally U-shaped brackets 66 including a hook portion 69 embrace the four surfaces of beam 4t), as shown, and register with pivot shaft 42 intermediate the bifurcated upper end portions 62 of each fork tine in an opening 57 formed in an enlarged boss section 68 of each bracket.
  • the lower portions of the vertical legs of the fork tines normally rest against the forward surface of beam 38, which resists the rearward thrust of a load on the fork tines tending to rotate same in a clockwise direction as viewed in FIGURE 2.
  • Assembly notches 70 arecut out. of the rear Surface portion of beam Mlwfand are of slightlygreater width thantthey width of brackets 66.
  • brackets 66 are threaded on the beam from opposite ends thereof a distance sutcient to permit forkends ,62,tobe aligned with openings67 for receiving shaft 42.V Then,y with shaft 42 in vposition in resilient supports43 of end bars 36, brackets 66 cannot be,moved,transversely outwardly a suflicient distance to drop into assembly notches 70 and become unintentional- -ly unhooked from ,beam 40 without removal of shaft 42.
  • Resilient supports 43 are preferably of sufficient rmness to ,support in position elements 42, 60 anddwhen.
  • transverse otjthe carriage assembly -along the entirelengthpf pivot shaft 442so that any .combinationof l relative ,transverse position ofthe pair of fork ⁇ tines may ⁇ bcleifected within the space provided between vertical ⁇ frame members 36.
  • pivot ⁇ shaft 142 nced not be-of appreciable cross-section, as would be sufficient tosupport a relatively heavy load intermediatethe ends thereof, inasmuchas the load is supported from transverse beamv40, the pivot shaft providing meansy for permittingfpivotallmovement of the fork4 tintes in a Counterdockwise ,direction Such; 21Sv is ⁇ desirable during. rearwardnmovement of the llift truck' over uneven Vterrain.,V
  • AL load supporting ,carriageV assembly for use with lift trucks comprisingla pair of ⁇ transverselyspaced verticall'y extending frameV members, a pairsof vertically4 spaced transversely extendingbeams connected to said:
  • a load supporting. carriage. assembly for use with lift trucks having ⁇ aliftingmast construction mounted at one end yof the truck comprising a transversely extending beam, a pair of laterally spaced carriage support means secured to said beam and mounted in opposite sides ofthe lifting mast for supporting said beam forwardly of the lifting mast, a transversely extending pivot -member mounted adjacent said beam, a pair of transversely spaced load engaging means depending from said pivot member, apair of members supporting said pivot member from said beam, saidl latter supporting members being connected to said pivot member adjacent-the connection thereto of said load engaging means and being adjustable with saidl load engaging-means transversely of said pivot member and said beam, andl yielding ⁇ means' supporting said pivot :member for limited movement relative to said beam such that said supporting members-are adapted to moveinto full load supporting-abutment with said beam When-said load engaging Vmeans lis subjected to a load.
  • each load engaging means is pivotable outwardly of the carriage assembly and is adjustable from a position adjacentrone end of the pivot member to a position adjacent the opposite end thereof, said upper beam having notched reduced end portions of lesser width than theV Width of said brackets so that the brackets may be readily threaded on the upper beam from the ends thereof but cannot drop into said notchedend portions following assembly of the carriage.
  • each load engaging means and associated bracket are mounted uponithe ⁇ pivot member in-interlocking relation such that the weight of the load engaging means and any load carried thereby is supported from the upper beam, and vyielding means supporting the ends of said pivot member for limited movement reiative to said upper beam whereby to assure continuous support of the load engaging means and load from said upper beam.
  • A-.load supporting carriage assembly for use with lift trucks having an upright mast construction located at one end of the truck comprising a beam member of substantially-rectangular cross-sectionsupported from and forwardly of the mast construction-for vertical movement relative thereto, said beam lmember extending transversely of the mast construction and being located in a biased plane which extends downwardly and ⁇ forwardly from the plane of the mast construction, a pair of transversely spaced generally U-shaped bracket support members. embracing said beam and movable lengthwise-thereof, each said support bracket havingA a downwardly extending portion, a transversely extending vpivot shaft in registry with 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
US73718A 1960-12-05 1960-12-05 Adjustable load engaging means for lift truck Expired - Lifetime US3075665A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US73718A US3075665A (en) 1960-12-05 1960-12-05 Adjustable load engaging means for lift truck
FR877138A FR1304539A (fr) 1960-12-05 1961-10-26 Dispositif réglable saisissant la charge d'un chariot de levée
BE609794A BE609794A (fr) 1960-12-05 1961-10-31 Dispositif réglable saisissant la charge d'un chariot de levée.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73718A US3075665A (en) 1960-12-05 1960-12-05 Adjustable load engaging means for lift truck

Publications (1)

Publication Number Publication Date
US3075665A true US3075665A (en) 1963-01-29

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US73718A Expired - Lifetime US3075665A (en) 1960-12-05 1960-12-05 Adjustable load engaging means for lift truck

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US (1) US3075665A (fr)
BE (1) BE609794A (fr)
FR (1) FR1304539A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223251A (en) * 1962-04-11 1965-12-14 Ver Flugtechnische Werke Displaceable jack for automotive vehicles
US3312361A (en) * 1965-05-06 1967-04-04 William E Foster Converter unit
US3532239A (en) * 1965-08-18 1970-10-06 Pierluigi May Device for fork inclination in lifting trucks
US3974927A (en) * 1974-07-15 1976-08-17 Little Giant Products, Inc. Side shifter assembly for lift trucks
EP0042835A4 (fr) * 1980-01-07 1981-11-11 Towmotor Corp Chariot reglable a fourches a deplacement lateral.
US4395189A (en) * 1981-02-02 1983-07-26 Munten Gerard H Dual mast lift truck for unbalanced loads and the like
WO1983003817A1 (fr) * 1982-04-22 1983-11-10 Towmotor Corporation Dispositif de retenue de la position d'une fourche
EP0126927A3 (en) * 1983-05-20 1986-01-29 Carl Falkenroth Sohne Gmbh & Co. Kg Supporting fork, especially for a stacker truck
IT201900000607A1 (it) * 2019-01-15 2020-07-15 Manitou Italia Srl Attrezzatura perfezionata.
RU2787523C2 (ru) * 2019-01-15 2023-01-10 МАНИТОУ ИТАЛИА С.р.л. Устройство для удержания инструмента самоходной рабочей машины и приспособление с инструментом для самоходной рабочей машины

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596747A (en) * 1949-09-27 1952-05-13 Ward Robert Mechanical handling truck
US2904203A (en) * 1956-12-24 1959-09-15 Clark Equipment Co Lift truck

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596747A (en) * 1949-09-27 1952-05-13 Ward Robert Mechanical handling truck
US2904203A (en) * 1956-12-24 1959-09-15 Clark Equipment Co Lift truck

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223251A (en) * 1962-04-11 1965-12-14 Ver Flugtechnische Werke Displaceable jack for automotive vehicles
US3312361A (en) * 1965-05-06 1967-04-04 William E Foster Converter unit
US3532239A (en) * 1965-08-18 1970-10-06 Pierluigi May Device for fork inclination in lifting trucks
US3974927A (en) * 1974-07-15 1976-08-17 Little Giant Products, Inc. Side shifter assembly for lift trucks
EP0042835A4 (fr) * 1980-01-07 1981-11-11 Towmotor Corp Chariot reglable a fourches a deplacement lateral.
US4395189A (en) * 1981-02-02 1983-07-26 Munten Gerard H Dual mast lift truck for unbalanced loads and the like
WO1983003817A1 (fr) * 1982-04-22 1983-11-10 Towmotor Corporation Dispositif de retenue de la position d'une fourche
EP0126927A3 (en) * 1983-05-20 1986-01-29 Carl Falkenroth Sohne Gmbh & Co. Kg Supporting fork, especially for a stacker truck
IT201900000607A1 (it) * 2019-01-15 2020-07-15 Manitou Italia Srl Attrezzatura perfezionata.
CN111434602A (zh) * 2019-01-15 2020-07-21 马尼托意大利有限责任公司 用于自驱动地操作的机器的设备和包括该设备的附件
EP3683184A1 (fr) * 2019-01-15 2020-07-22 Manitou Italia S.r.l. Appareil pour machine d'exploitation automotrice
US11440781B2 (en) 2019-01-15 2022-09-13 Manitou Italia S.R.L. Apparatus
RU2787523C2 (ru) * 2019-01-15 2023-01-10 МАНИТОУ ИТАЛИА С.р.л. Устройство для удержания инструмента самоходной рабочей машины и приспособление с инструментом для самоходной рабочей машины
CN111434602B (zh) * 2019-01-15 2023-08-18 马尼托意大利有限责任公司 用于自驱动地操作的机器的设备和包括该设备的附件
AU2020200140B2 (en) * 2019-01-15 2025-10-09 Manitou Italia S.R.L. Improved apparatus

Also Published As

Publication number Publication date
BE609794A (fr) 1962-02-15
FR1304539A (fr) 1962-09-21

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