US3741346A - Shock-proof fork support for fork lift trucks - Google Patents

Shock-proof fork support for fork lift trucks Download PDF

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Publication number
US3741346A
US3741346A US00187426A US3741346DA US3741346A US 3741346 A US3741346 A US 3741346A US 00187426 A US00187426 A US 00187426A US 3741346D A US3741346D A US 3741346DA US 3741346 A US3741346 A US 3741346A
Authority
US
United States
Prior art keywords
mast
supporting plate
supporting
base frame
fork
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
US00187426A
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English (en)
Inventor
B Herdemann
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.)
CNH Industrial Baumaschinen GmbH
Original Assignee
O&K Orenstein and Koppel GmbH
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 O&K Orenstein and Koppel GmbH filed Critical O&K Orenstein and Koppel GmbH
Application granted granted Critical
Publication of US3741346A publication Critical patent/US3741346A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • ABSTRACT A telescopic mast with stand mast and drive mast for fork lift trucks, which includes a fork support vertically movable in the drive mast and also includes load pickup and supporting elements connected to said fork sup- I port by means of a supporting plate, which latter is in horizontal direction elastically supported by the base frame of the lift carriage.
  • the present invention concerns a shock-proof fork support for fork lifts and, more specifically, concerns a telescope mast with stand and driving mast for fork lifts with a fork support vertically movable in the driving mast and with supporting elements connected to said fork support by means of a supporting plate.
  • the supporting plate is connected to the rollers which directly receive the lateral jaws.
  • Such an arrangement has the drawback that in view of the shock energy occurring during the pickup of the load in view of the dynamic driving load, is directly conveyed to the supporting rollers arranged on the lifting mast and is also conveyed to the running path of the mast so that these parts are frequently damaged or destroyed.
  • an object of the present invention to provide an arrangement to equalize the shock stresses, especially the high loads which occur during a fast pickup of load and which bring about a premature wear of the guiding path for the lifting carriage, the rollers,
  • FIG. 1 is an isometric view of a fork lifter according to the invention, with shock-proof fork support.
  • FIG. 3 shows a side view of the lifting carriage with supporting plate and supporting fork and also shows a partial section through the elastic connection.
  • the arrangement according to the present invention is characterized primarily in that the supporting plate serving for holding the supporting elements is, in horizontal direction, elastically supported by the base frame.
  • the elastic support of the supporting plates with regard to the base frame is mounted by means of dish springs on threaded bushings with the collar of the threaded bushings engaging a recess of the supporting plate while the threaded bushing in its'turn is secured against accidentally dropping out by cheese head screws mounted in a recess of the transverse beam of the base frame of the lifting carriage.
  • the lifting stroke of the dish springs is limited by abutment means which are connected to the back side of the supporting plate, said abutment means resting against the stand mast.
  • the fork lift 1 is movable on four wheels 2 with rubber tires and is equipped with a drive of its own while being able to be steered by means of the steering wheel 3.
  • the stand mast 4 is pivotally arranged inasmuch as the inner or driving mast 5 is adapted to telescopically slide -on guiding means, which will be described further below, as soon as the inner or driving mast 5 is actuated upon by lifting cylinder 7 through the intervention of lifting chains 6.
  • the lifting carriage 8 is displaceably mounted at the lower end of the stand mast 4 and inner mast 5.
  • the said lifting carriage 8 comprises a supporting plate 9 and a supporting fork 10.

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)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US00187426A 1970-10-08 1971-10-07 Shock-proof fork support for fork lift trucks Expired - Lifetime US3741346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2049414A DE2049414C3 (de) 1970-10-08 1970-10-08 Stoßdämpfende Federung eines Hubschlittens für Hublader

Publications (1)

Publication Number Publication Date
US3741346A true US3741346A (en) 1973-06-26

Family

ID=5784538

Family Applications (1)

Application Number Title Priority Date Filing Date
US00187426A Expired - Lifetime US3741346A (en) 1970-10-08 1971-10-07 Shock-proof fork support for fork lift trucks

Country Status (14)

Country Link
US (1) US3741346A (xx)
JP (1) JPS5229494B1 (xx)
AT (1) AT315739B (xx)
BE (1) BE773693A (xx)
BG (1) BG28042A3 (xx)
CH (1) CH525153A (xx)
DE (1) DE2049414C3 (xx)
DK (1) DK124743B (xx)
FR (1) FR2110291B1 (xx)
GB (1) GB1366693A (xx)
IT (1) IT940944B (xx)
NL (1) NL151039B (xx)
NO (1) NO131926C (xx)
SE (1) SE366720B (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234057A (en) * 1977-09-13 1980-11-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Lift truck having a load lifting assembly
US4503935A (en) * 1982-03-15 1985-03-12 Towmotor Corporation Lift jack retention bracket
US5174710A (en) * 1991-03-27 1992-12-29 George Dragos Merchandise protector
US5984050A (en) * 1997-05-29 1999-11-16 The Raymond Corporation Carriage suspension for lift truck
US6454034B1 (en) * 1998-10-28 2002-09-24 Linde Aktiengesellschaft Fork lift truck
US20060055132A1 (en) * 2004-08-20 2006-03-16 Michael Schonauer Industrial truck having a fork damper
US20080116013A1 (en) * 2004-06-18 2008-05-22 Vandewinckel Stephen C High Lift Truck
KR200449203Y1 (ko) * 2008-02-28 2010-06-24 황득상 지게차용 클램프 장치
US20140262625A1 (en) * 2013-03-15 2014-09-18 Geoffrey R. Sharp Movable load backrest for a lift truck
US20150016937A1 (en) * 2013-06-04 2015-01-15 Roche Diagnostics Operations, Inc. Transport device
CN108910779A (zh) * 2018-08-10 2018-11-30 肥东万安工程机械有限公司 一种可视角度大的叉车门架
CN111732034A (zh) * 2019-03-25 2020-10-02 三菱重工业株式会社 叉车及其叉构件

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318388C2 (de) * 1983-05-20 1985-04-04 Carl Falkenroth Söhne GmbH & Co KG, 5885 Schalksmühle Traggabel für insbesondere Hubstapler
AT392255B (de) * 1988-04-19 1991-02-25 Austria Metall Heb- und stapelbares verladegestell fuer einen hubstapler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA738826A (en) * 1966-07-19 Darimont Maurice Fork lift truck
US3314559A (en) * 1964-04-30 1967-04-18 Eaton Yale & Towne Vacuum attachment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA738826A (en) * 1966-07-19 Darimont Maurice Fork lift truck
US3314559A (en) * 1964-04-30 1967-04-18 Eaton Yale & Towne Vacuum attachment

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234057A (en) * 1977-09-13 1980-11-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Lift truck having a load lifting assembly
US4503935A (en) * 1982-03-15 1985-03-12 Towmotor Corporation Lift jack retention bracket
US5174710A (en) * 1991-03-27 1992-12-29 George Dragos Merchandise protector
US5984050A (en) * 1997-05-29 1999-11-16 The Raymond Corporation Carriage suspension for lift truck
US6454034B1 (en) * 1998-10-28 2002-09-24 Linde Aktiengesellschaft Fork lift truck
US20080116013A1 (en) * 2004-06-18 2008-05-22 Vandewinckel Stephen C High Lift Truck
US20060055132A1 (en) * 2004-08-20 2006-03-16 Michael Schonauer Industrial truck having a fork damper
KR200449203Y1 (ko) * 2008-02-28 2010-06-24 황득상 지게차용 클램프 장치
US20140262625A1 (en) * 2013-03-15 2014-09-18 Geoffrey R. Sharp Movable load backrest for a lift truck
US20150016937A1 (en) * 2013-06-04 2015-01-15 Roche Diagnostics Operations, Inc. Transport device
CN108910779A (zh) * 2018-08-10 2018-11-30 肥东万安工程机械有限公司 一种可视角度大的叉车门架
CN111732034A (zh) * 2019-03-25 2020-10-02 三菱重工业株式会社 叉车及其叉构件
US11136228B2 (en) * 2019-03-25 2021-10-05 Mitsubishi Heavy Industries, Ltd. Forklift and fork member of the same

Also Published As

Publication number Publication date
FR2110291B1 (xx) 1975-11-21
IT940944B (it) 1973-02-20
NO131926B (xx) 1975-05-20
DE2049414B2 (de) 1974-02-07
NL151039B (nl) 1976-10-15
FR2110291A1 (xx) 1972-06-02
BG28042A3 (en) 1980-02-25
BE773693A (fr) 1972-01-31
AT315739B (de) 1974-06-10
GB1366693A (en) 1974-09-11
JPS5229494B1 (xx) 1977-08-02
DE2049414C3 (de) 1974-08-29
DE2049414A1 (de) 1972-04-13
NO131926C (xx) 1975-09-03
CH525153A (de) 1972-07-15
DK124743B (da) 1972-11-20
SE366720B (xx) 1974-05-06
NL7113464A (xx) 1972-04-11

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