SE9000187L - TELESCOPE BOOM FOR PELARKRAN - Google Patents

TELESCOPE BOOM FOR PELARKRAN

Info

Publication number
SE9000187L
SE9000187L SE9000187A SE9000187A SE9000187L SE 9000187 L SE9000187 L SE 9000187L SE 9000187 A SE9000187 A SE 9000187A SE 9000187 A SE9000187 A SE 9000187A SE 9000187 L SE9000187 L SE 9000187L
Authority
SE
Sweden
Prior art keywords
lifting
pelarkran
extensions
telescope boom
lifting beam
Prior art date
Application number
SE9000187A
Other languages
Swedish (sv)
Other versions
SE9000187D0 (en
SE508024C2 (en
Inventor
Pekka Syrjae
Original Assignee
Pekka Syrjae
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 Pekka Syrjae filed Critical Pekka Syrjae
Publication of SE9000187D0 publication Critical patent/SE9000187D0/en
Publication of SE9000187L publication Critical patent/SE9000187L/en
Publication of SE508024C2 publication Critical patent/SE508024C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/04—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs the effective length of which is variable in operation, e.g. longitudinally displaceable, extensible

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The invention relates to a timber crane 1, comprising a column 2 which is rotatable about its vertical axis and to the upper end of which a lifting beam 3, 11 has been connected by means of a joint 12. In lifting cranes of this kind, pressure-medium-driven cylinders have been used to set in motion the extensions 3a, 3b of the lifting beam 3. In the lifting crane according to the invention, the extensions 3a, 3b are extended by gravitational force and retracted with the aid of a flexible pull member 4. <IMAGE>
SE9000187A 1989-01-24 1990-01-19 Timber crane with wired telescopic boom SE508024C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI890352A FI82230C (en) 1989-01-24 1989-01-24 wood Crane

Publications (3)

Publication Number Publication Date
SE9000187D0 SE9000187D0 (en) 1990-01-19
SE9000187L true SE9000187L (en) 1990-07-25
SE508024C2 SE508024C2 (en) 1998-08-10

Family

ID=8527776

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000187A SE508024C2 (en) 1989-01-24 1990-01-19 Timber crane with wired telescopic boom

Country Status (2)

Country Link
FI (1) FI82230C (en)
SE (1) SE508024C2 (en)

Also Published As

Publication number Publication date
FI82230C (en) 1991-02-11
SE9000187D0 (en) 1990-01-19
FI82230B (en) 1990-10-31
FI890352A (en) 1990-07-25
SE508024C2 (en) 1998-08-10
FI890352A0 (en) 1989-01-24

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