GB1200148A - Improvements in or relating to load lifting apparatus - Google Patents

Improvements in or relating to load lifting apparatus

Info

Publication number
GB1200148A
GB1200148A GB51848/68A GB5184868A GB1200148A GB 1200148 A GB1200148 A GB 1200148A GB 51848/68 A GB51848/68 A GB 51848/68A GB 5184868 A GB5184868 A GB 5184868A GB 1200148 A GB1200148 A GB 1200148A
Authority
GB
United Kingdom
Prior art keywords
rollers
uprights
engage
lifting carriage
flange
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
Application number
GB51848/68A
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.)
Toyota Industries Corp
Original Assignee
Toyoda Automatic Loom Works Ltd
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
Priority claimed from JP7155567A external-priority patent/JPS491420B1/ja
Priority claimed from JP8022767A external-priority patent/JPS4832819B1/ja
Application filed by Toyoda Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Publication of GB1200148A publication Critical patent/GB1200148A/en
Expired legal-status Critical Current

Links

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
    • B66F9/08—Masts; Guides; Chains

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Looms (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

1,200,148. Masted lift trucks. TOYODA AUTOMATIC LOOM WORKS Ltd. 1 Nov., 1968 [7 Nov.. 1967; 14 Dec., 1967], No. 51848/68. Heading B8H. In a masted lift truck, the lifting carriage and movable mast section are each provided with pairs of upper, middle and lower guide rollers mounted for rotation about parallel areas and arranged to resist lateral thrust caused by eccentric loading. As shown, the lifting carriage 15, 17 is provided with guide rollers 21, 22, 23 engaging the movable mast uprights 7, and the channel of each upright 7 is formed by forward and rear flanges 7a, 7b, extending from a web. A curved rolling surface 7c is formed at the inside corner between the rearward flange 7b and the web and has the same radius of curvature as the periphery of the rollers. A supporting surface 7d is formed on the web in continuation of the surface 7c. The upper rollers are prevented from contacting the surfaces 7d by retaining rings 25, but the lower rollers 23 are adjusted laterally by shims 26 so that they contact the surfaces 7c. The middle rollers 22 are of smaller diameter than the upper rollers 21 so that they do not contact the forward flanges 7a until the upper rollers 21 are raised above the uprights 7. The surfaces 7c, 7d extend downwardly from a point a predetermined distance from the upper end of the uprights. Second curved surfaces and supporting surfaces 7d<SP>1</SP> are provided in the other upright inside corner and extend upwardly from the above point. In operation, when the lifting carriage is raised from its lowered position, the upper rollers 21 engage the forward flange 7a and the lower rollers 23 engage the rearward flange 7b, the curved surface 7c and the supporting surface 7d. The middle roller 22 on the side on which an eccentric load is supported, engages the surface 7d and rotates in the same direction as the lower rollers, and the other middle roller does not engage the adjacent upright. As the lifting carriage approaches its uppermost position, the middle roller passes from the surface 7d to the surface 7d<SP>1</SP> adjacent the forward flange and its direction of rotation is reversed. When the upper rollers 21 project above the uprights 7, the middle rollers 22 engage the forward flange 7a and adjacent curved surface. The fixed uprights are shaped similarly to the uprights 7 and are engaged by upper, middle and lower rollers mounted on the uprights 7, Figs. 12-14 (not shown).
GB51848/68A 1967-11-07 1968-11-01 Improvements in or relating to load lifting apparatus Expired GB1200148A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7155567A JPS491420B1 (en) 1967-11-07 1967-11-07
JP8022767A JPS4832819B1 (en) 1967-12-14 1967-12-14

Publications (1)

Publication Number Publication Date
GB1200148A true GB1200148A (en) 1970-07-29

Family

ID=26412659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51848/68A Expired GB1200148A (en) 1967-11-07 1968-11-01 Improvements in or relating to load lifting apparatus

Country Status (2)

Country Link
US (1) US3556247A (en)
GB (1) GB1200148A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171666B (en) * 1985-02-01 1989-06-07 Jungheinrich Kg Industrial masted lift truck
WO1997022546A1 (en) * 1995-12-19 1997-06-26 Ab Skf Lift mast roller assembly for a lift structure of a fork lift truck

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871494A (en) * 1970-07-15 1975-03-18 Jr Wilfred H Kelly Lift truck mast
US3768595A (en) * 1970-07-15 1973-10-30 White Equipment Co Lift truck mast
USRE30815E (en) * 1970-07-15 1981-12-08 White Farm Equipment Lift truck mast
US3851732A (en) * 1973-02-08 1974-12-03 Towmotor Corp Mast and carriage for a lift truck
US4124104A (en) * 1976-04-14 1978-11-07 Towmotor Corporation Lift mask carriage mounting arrangement
JPS5931674Y2 (en) * 1977-09-13 1984-09-06 株式会社豊田自動織機製作所 Lateral thrust support device for cargo handling equipment on forklift trucks
US4354579A (en) * 1980-06-30 1982-10-19 Low Leonard J Apparatus for guiding lift truck mast segments
JPS58501765A (en) * 1981-10-23 1983-10-20 トウモ−タ−　コ−ポレ−シヨン lift mast assembly
US5052881A (en) * 1990-11-28 1991-10-01 Caterpillar Industrial Inc. Bearing mounting arrangement for a lift mast
DE10002846B4 (en) * 2000-01-24 2014-06-05 Jungheinrich Aktiengesellschaft forklifts
EP2322465B1 (en) * 2009-11-13 2013-02-27 Atlet AB Load-lifting system
CN105439047A (en) * 2015-12-29 2016-03-30 合肥搬易通科技发展有限公司 Perpendicularity adjusting device for high-lift forklift gantry system
CN108689350B (en) * 2017-03-30 2021-06-08 雷蒙德股份有限公司 Extendable mast system and method for a materials handling vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1090567A (en) * 1965-06-01 1967-11-08 Lansing Bagnall Ltd Improvements in or relating to industrial lift trucks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171666B (en) * 1985-02-01 1989-06-07 Jungheinrich Kg Industrial masted lift truck
WO1997022546A1 (en) * 1995-12-19 1997-06-26 Ab Skf Lift mast roller assembly for a lift structure of a fork lift truck

Also Published As

Publication number Publication date
US3556247A (en) 1971-01-19
DE1807629A1 (en) 1969-06-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee