GB1217627A - Flexible means for powering a telescopic crane boom in extending and contracting directions - Google Patents

Flexible means for powering a telescopic crane boom in extending and contracting directions

Info

Publication number
GB1217627A
GB1217627A GB3667969A GB3667969A GB1217627A GB 1217627 A GB1217627 A GB 1217627A GB 3667969 A GB3667969 A GB 3667969A GB 3667969 A GB3667969 A GB 3667969A GB 1217627 A GB1217627 A GB 1217627A
Authority
GB
United Kingdom
Prior art keywords
section
extending
boom
crane boom
base
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
GB3667969A
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.)
Harnischfeger Corp
Original Assignee
Harnischfeger 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 Harnischfeger Corp filed Critical Harnischfeger Corp
Publication of GB1217627A publication Critical patent/GB1217627A/en
Expired legal-status Critical Current

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
    • B66C23/62—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
    • B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands

Landscapes

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

Abstract

1,217,627. Jib cranes. HARNISCHFEGER CORP. 22 July, 1969 [25 July, 1968], No .36679/69. Heading B8B. A crane boom B comprises telescopic base, intermediate, third and fourth sections 10, 12, 14, 16. The base section 10 is pivotally mounted for luffing and the boom B is supported by a cable system S extending between the boom tip 25 and a winch 5 as described in Specification 1,215,798. As shown in Fig. 2 a flat woven flexible belt 60 is anchored at 16a to the rear end of section 16 and also to the forward end of the section 12 at 12a, being trained around sheaves 62, 64 at the opposite ends of the section 14. A similar belt 70 is similarly connected between the section 10 and the section 14. This arrangement is such that moving the intermediate section 12 relative to the base section 10, as by a doubleacting hydraulic piston and cylinder 80, as shown in Fig. 1, results in simultaneous extending or contracting movements between the sections 10, 12, 14, 16. Fig. 2 shows an arrangement in which a fluid motor 83 drives a roller chain 85 attached at 86 to the section 12 and passing over sprockets 82, 84 on the section 10 provides the motive power.
GB3667969A 1968-07-25 1969-07-22 Flexible means for powering a telescopic crane boom in extending and contracting directions Expired GB1217627A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74767268A 1968-07-25 1968-07-25

Publications (1)

Publication Number Publication Date
GB1217627A true GB1217627A (en) 1970-12-31

Family

ID=25006146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3667969A Expired GB1217627A (en) 1968-07-25 1969-07-22 Flexible means for powering a telescopic crane boom in extending and contracting directions

Country Status (3)

Country Link
DE (1) DE1937275A1 (en)
FR (1) FR2013710A1 (en)
GB (1) GB1217627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136753A (en) * 1983-03-21 1984-09-26 Donald Lacey Smith Telescopic boom and conveyor apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030822A1 (en) * 1979-08-17 1981-03-26 Coles Cranes Ltd., Sunderland, Tyne and Wear CRANE WITH A TELESCOPIC BOOM
DE4445165C2 (en) * 1994-12-17 2000-02-17 Abb Patent Gmbh Method and stick tree for erecting lattice masts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136753A (en) * 1983-03-21 1984-09-26 Donald Lacey Smith Telescopic boom and conveyor apparatus

Also Published As

Publication number Publication date
DE1937275A1 (en) 1970-01-29
FR2013710A1 (en) 1970-04-03

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