JPS57180508A - Expansion fork - Google Patents

Expansion fork

Info

Publication number
JPS57180508A
JPS57180508A JP6361881A JP6361881A JPS57180508A JP S57180508 A JPS57180508 A JP S57180508A JP 6361881 A JP6361881 A JP 6361881A JP 6361881 A JP6361881 A JP 6361881A JP S57180508 A JPS57180508 A JP S57180508A
Authority
JP
Japan
Prior art keywords
fork
roller
rotary shaft
cam
sliding
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.)
Pending
Application number
JP6361881A
Other languages
Japanese (ja)
Inventor
Katsuhiro Nagabori
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.)
ISHIKAWAJIMA YUSOKI KK
ISHIKAWAJIMA YUSOUKI KK
IHI Corp
Original Assignee
ISHIKAWAJIMA YUSOKI KK
ISHIKAWAJIMA YUSOUKI KK
IHI Corp
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 ISHIKAWAJIMA YUSOKI KK, ISHIKAWAJIMA YUSOUKI KK, IHI Corp filed Critical ISHIKAWAJIMA YUSOKI KK
Priority to JP6361881A priority Critical patent/JPS57180508A/en
Publication of JPS57180508A publication Critical patent/JPS57180508A/en
Pending 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
    • B66F9/12—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
    • B66F9/141—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements with shuttle-type movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Warehouses Or Storage Devices (AREA)

Abstract

PURPOSE:To smoothly accelerate and decelerate an expansion fork at a high speed and obtain a good stop accuracy by providing a roller which is brought into pressure contact with each rotary shaft of a fixed fork and an end fork and which can rotate around an axis crossing at right angles with the axis of the rotary shafts. CONSTITUTION:When an electric motor 4 is started, a rotary shaft 3 of a fixed fork 2 is rotated by a V-belt 6, and a roller 11 of an intermediate fork 7 is rotated by the rotary shaft 3 to rotate a rotary shaft 19 of an end fork 18 by the roller 11. Since the roller 11 is placed at a very small angle, the intermediate fork 7 starts sliding in the longitudinal direction, and the end fork 18 starts sliding in the same direction as the intermediate fork 7, too. Subsequently, a cam roller 13 is moved along an oblique side of a cam plate 17a, so that the angle alpha of the roller 11 becomes larger and the sliding speed of the intermediate fork 7 and the end fork 18 gradually becomes higher. When the cam roller 13 separates from the oblique side of the cam plate 17a, the sliding speed of the intermediate fork 7 and the end fork 18 becomes constant.
JP6361881A 1981-04-27 1981-04-27 Expansion fork Pending JPS57180508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6361881A JPS57180508A (en) 1981-04-27 1981-04-27 Expansion fork

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6361881A JPS57180508A (en) 1981-04-27 1981-04-27 Expansion fork

Publications (1)

Publication Number Publication Date
JPS57180508A true JPS57180508A (en) 1982-11-06

Family

ID=13234477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6361881A Pending JPS57180508A (en) 1981-04-27 1981-04-27 Expansion fork

Country Status (1)

Country Link
JP (1) JPS57180508A (en)

Similar Documents

Publication Publication Date Title
JPS57180508A (en) Expansion fork
JPS57180509A (en) Expansion fork
JPS5710788A (en) Roller pump
JPS57171155A (en) Pressure applying device of movable pulley in stepless speed changer
JPS57138573A (en) Barrel grinding method and grinding machine therefor
JPS575589A (en) Machining method and its device for rotor in screw fluidic machine
JPS5540334A (en) Gear change device
FR2262753A1 (en) Alternating drive for a mowing machine - uses bent rotary shaft with output bearing centre on main shaft axis
JPS5548427A (en) Pipe bending device
JPS5245201A (en) Tunning setting device
JPS55120976A (en) Cylinder-grinding method for longish substance
JPS57132935A (en) Turn table mechanism
JPS5779357A (en) Linear reciprocal motion device
JPS55156665A (en) Edge working method in pipe bias cutting and its edge working device
JPS51129586A (en) A fluid apparatus
JPS5440965A (en) Belt-clutch apparatus equipped with reversing mechanism
JPS5514373A (en) Power transmission
JPS55139549A (en) Reciprocation device
IT1075762B (en) Variable conversion ratio gear - has arc:formed surface pick=up lugs between drive and driven parts
JPS5655751A (en) Stroke length regulating device
JPS5578850A (en) Rolling contact mechanism
JPS5756130A (en) Correction of misalignment of valve rod material and simultaneous rolling method and work
JPS56102416A (en) Pipe cutting apparatus
JPS56109945A (en) Stepless speed changing device
JPS5686259A (en) Reciprocating rotation apparatus