US3927865A - Apparatus for lifting of heavy loads - Google Patents

Apparatus for lifting of heavy loads Download PDF

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Publication number
US3927865A
US3927865A US435818A US43581874A US3927865A US 3927865 A US3927865 A US 3927865A US 435818 A US435818 A US 435818A US 43581874 A US43581874 A US 43581874A US 3927865 A US3927865 A US 3927865A
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US
United States
Prior art keywords
climbing
frame
load
mast
support
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
US435818A
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English (en)
Inventor
Carl-Heinrich Teod Blankenburg
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.)
WIKSTROM INTERNATIONAL AB
WILKSTROM INTERNATIONAL AB
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WILKSTROM INTERNATIONAL AB
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 WILKSTROM INTERNATIONAL AB filed Critical WILKSTROM INTERNATIONAL AB
Application granted granted Critical
Publication of US3927865A publication Critical patent/US3927865A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
    • E02B17/0836—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks
    • E02B17/0881—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks with following nuts

Definitions

  • This invention relates to apparatus for stagewise lifting and/or lowering of heavy loads with the aid of one or several preferably mountable or dismountable climbing masts, for example with the load placed be tween two or more climbing masts, which apparatus features climbing members each and every one of which interacts with a climbing rod passing through the respective climbing member.
  • Climbing masts with hydraulic jacks are used as lifting means for lifting of heavy loads to high height.
  • the climbing jacks work on pressed rods and the climbing masts serve as buckle-relieving elements for the climbing rods.
  • the climbing rods then have the same height extent as the climbing masts and since the climbing rods must be generously dimensioned in relation to the load which is to be lifted or lowered they will be very heavy.
  • Climbing masts are also used when the climbing jacks are placed on the top of the mast or the tops of the masts and in such cases the load is raised with pulled rods or steel ropes.
  • the advantage of the climbing jacks working on the pressed rods is that the mast or masts are loaded in pace with the lifting of the load and the necessary bracing can thus take place successively at a lower level than that at which the load at the time is located.
  • the disadvantages of this system are the weight of the climbing rods and the large quantities needed of these expensive rods.
  • the present invention relates to apparatus by means of which the weight load on the climbing masts is always exerted successively in pace with the vertical travel of the load, whereby the bracing can take place successively in pace with the vertical travel of the load but under the load. Moreover, use is made in the apparatus according to the invention of the relation to the height of the climbing masts only short climbing rods exposed mostly to pulling, which gives a substantial saving, since such climbing rods are expensive.
  • FIG. I shows a part of two climbing masts with a heavy load placed between them
  • FIGS. 2 and 3 show examples of the cross-sectional appearance of different climbing masts
  • FIG. 4 shows the cleats of the bearing frames and the support cleats of the climbing masts
  • FIG. 5 shows a climbing jack viewed from the front
  • FIG. 6 shows the jack according to FIG. 5 viewed from the side and FIG. 7 shows the climbing jack viewed in the direction indicated by the arrows VII-VII in FIG. 5.
  • the climbing masts I0, 10' which are often chosen to work in pairs with the load placed between them, consist preferably of mountable and dismountable sections, the length of which in the present case has been chosen as 3 meters.
  • the said mast sections are each provided with support cleats designated 31 in mast section 1, which support cleats preferably are attached at alike distances between them and once per mast section. These support cleats serve as supports for three bearing frames designated load frame 5, climbing frame 4 and stage frame/stage support 8 respectively.
  • climbers 2 On the climbing frame 4, one or a plurality of climbers 2 are placed and attached, which climbers in the embodiment now being described consist of lifting jacks 2.
  • the jacks 2 each consists of preferably of two co-operating jacks 2a, 2b, which are placed between an upper yoke 12 and a lower yoke 13 and which have a suitable stroke length and are doubleacting.
  • Placed by the yokes 12, 13 for the hydraulic jacks are nuts 9, 9', in which the threaded climbing rods 6 work.
  • the load frame 5 is supported via pull joints by the climbing rods 6 and through these interacts with the climbing frame 4, which in its turn interacts with the stage frame 8, which by means of both pull and push joints is connected with the climbing rods 6.
  • the stage frame 8 is preferably of a lighter construction than the climbing frame 4 and the load frame 5.
  • the load frame 5 is preferably by means of a girder structure 7 connected with the load I5 or a part thereof, for instance via a ball joint 1.
  • the bearing frames are located in the sequence, viewed in the vertical direction of the climbing masts with the load frame 5 lowermost, above this the climbing frame 4 and uppermost the stage frame 8, which arrangement can be seen for example from FIG. I.
  • the load frame 5 is placed for example on support cleat 31 of the lowermost section designated section 41 of the climbing mast with the aid of other cleats 3!, attached to the load frame 5, which cleats 31, 3t are made to interact with each other by means of a movable connector 11 which is selectively engageable and disengageable between pairs of said cleats.
  • the climbing frame 4 with its climbers 2 is placed on support cleat 33 (not shown) in mast section 43 with the aid of other cleats 33' (not shown) via a switchable connector ll (not shown), and the stage frame 8 is erected on the cleats 34 (not shown) in mast section 44 via a switchable connector II, (not shown) with the aid of other cleats 34' (not shown), which other cleats 31', 33, 34' are all located on the respective bearing frame.
  • the parts not shown in the drawings comprise logical counterparts to the parts which are 3 shown in the drawings.
  • Lifting takes place in such a manner that the climbers 2 lift the load frame 5 through a plurality of strokelength movements of the climbers to support cleats 32 (not shown) in stage 42 where the climbing rods 6 are relieved in that the load frame 5 via its cleats 31' and connector 11 is placed on the support cleats 32 in this mast section.
  • the stage frame 8 has been pushed up by the upper part of the climbing rods 6 to support cleats 35 (not shown) in mast section 45 and has been placed on these via its cleats 33' and connector 11
  • the climbing frame 4 will then be lifted to mast section 44, the procedure being somewhat different depending upon which climbing system is utilized.
  • a lowering of a load is carried out by lowering the load step by step from mast section to mast section.
  • the climbing masts can be dismounted as the climber system is moved downwards upon completion of the lifting operation.
  • each climbing member (2) cooperating with a respective climbing rod (6) for lifting and/or lowering said climbing frame (4) relative to said at least one climbing mast (10,]0'
  • a load frame carrying at least a part of the load and being coupled to and below said climbing frame (4);
  • stage support (8) cooperatively coupled via respective climbing rods (6) with said climbing frame (4);
  • At least one support cleat (31) mounted to said at least one climbing mast ([0,10');
  • Apparatus according to claim 1 including a ball joint means coupling said load frame (5) to said load l5).
  • each section of said at least one climbing mast is provided with respective support cleats; and wherein the respective frames (4,5) and stage support (8) are each provided with other respective cleats and with respective connecting means for selectively engaging said other respective cleats with said mast support cleats at least on some occasion during a complete lifting period of said load (15).
  • said climbing frame (4) comprises two double'acting jacks (2a,2b) which interact with each other via two yokes (12,13).
  • Apparatus according to claim 1 comprising two climbing masts (10,10'); a plurality of climbing rods (6) mounted to each of said climbing masts; a climbing frame (4) and associated climbing members (2) mounted to each climbing mast and associated with respective climbing rods; a load frame (5) mounted to each climbing mast and coupled to an associated climbing frame; a stage support (8) mounted to each climbing mast and coupled to an associated climbing frame (4); each climbing mast including at least one support cleat (31); and means (7) interconnecting the load frames (5) of at least two climbing masts for supporting said load (15) thereon.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
US435818A 1973-01-29 1974-01-23 Apparatus for lifting of heavy loads Expired - Lifetime US3927865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7301208A SE367612B (xx) 1973-01-29 1973-01-29

Publications (1)

Publication Number Publication Date
US3927865A true US3927865A (en) 1975-12-23

Family

ID=20316461

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Application Number Title Priority Date Filing Date
US435818A Expired - Lifetime US3927865A (en) 1973-01-29 1974-01-23 Apparatus for lifting of heavy loads

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US (1) US3927865A (xx)
DE (1) DE2403412A1 (xx)
GB (1) GB1455623A (xx)
SE (1) SE367612B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8757593B2 (en) 2012-05-10 2014-06-24 Commonwealth Dynamics, Inc. Ratchet pawl system, device and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106638532B (zh) * 2015-10-30 2019-05-28 中石化石油工程技术服务有限公司 双排主油缸连续升降装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2822670A (en) * 1953-09-02 1958-02-11 Delong Corp Perforated caisson jack assembly
US3028143A (en) * 1959-03-30 1962-04-03 David B Cheskin Lifting apparatus
US3053015A (en) * 1959-06-26 1962-09-11 George T Graham Method of building construction
US3522931A (en) * 1963-11-08 1970-08-04 Erik Johan Von Heidenstam Apparatus for erecting multistorey buildings
US3793702A (en) * 1971-04-29 1974-02-26 N Ahlgren Method of dismantling framework structures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2822670A (en) * 1953-09-02 1958-02-11 Delong Corp Perforated caisson jack assembly
US3028143A (en) * 1959-03-30 1962-04-03 David B Cheskin Lifting apparatus
US3053015A (en) * 1959-06-26 1962-09-11 George T Graham Method of building construction
US3522931A (en) * 1963-11-08 1970-08-04 Erik Johan Von Heidenstam Apparatus for erecting multistorey buildings
US3793702A (en) * 1971-04-29 1974-02-26 N Ahlgren Method of dismantling framework structures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8757593B2 (en) 2012-05-10 2014-06-24 Commonwealth Dynamics, Inc. Ratchet pawl system, device and method

Also Published As

Publication number Publication date
GB1455623A (en) 1976-11-17
SE367612B (xx) 1974-06-04
DE2403412A1 (de) 1974-08-01

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