US3570813A - Lifting equipment for the assemblage in vertical direction of building constructions machines and plants - Google Patents

Lifting equipment for the assemblage in vertical direction of building constructions machines and plants Download PDF

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Publication number
US3570813A
US3570813A US759424A US3570813DA US3570813A US 3570813 A US3570813 A US 3570813A US 759424 A US759424 A US 759424A US 3570813D A US3570813D A US 3570813DA US 3570813 A US3570813 A US 3570813A
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US
United States
Prior art keywords
switch means
devices
hoisting
jack
pump
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
US759424A
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English (en)
Inventor
Hristo Ivanov Gretchenliev
Atanas Gueorguiev Radev
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.)
NAUTCHNO IZSLEDOVATELSKI STR I
NAUTCHNO-IZSLEDOVATELSKI STROITELEN INSTITUT
Original Assignee
NAUTCHNO IZSLEDOVATELSKI STR I
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Publication date
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Publication of US3570813A publication Critical patent/US3570813A/en
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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
    • B66F1/00—Devices, e.g. jacks, for lifting loads in predetermined steps
    • B66F1/02—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts
    • B66F1/04—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed
    • B66F1/08—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed and the devices being operated by fluid pressure
    • 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
    • E02B17/0827—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with screws and nuts mechanism
    • 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

  • the present invention relates to lifting equipment for the assembly in vertical direction of buildings, machines, plants and the like wherein the hoisting is achieved by the reciprocating movement of a plurality of electrohydro mechanically actuated hoisting devices.
  • Lifting equipment wherein the hoisting devices are actuated by hydraulic or electrohydraulic means, and the synchronizing system securing the hoisting conveyance is operated on hydraulic principles.
  • the feeding of the lifting apparatus is achieved by means of separate armored rubber tubes through a high-delivery pumping set with an average pressure of 50-150 atm.
  • the synchronization of the hoisting velocity of all of the hoisting devices is accomplished via a hand-operated central control panel by regulation of the feeding hydraulic fluid of each hoisting device.
  • the utilization of a plurality of armored rubber tubes for each hoisting device requires a considerable number of rubber tubes, having a limited durability.
  • the hydraulic system securing the'hoisting conveyance requires a central pump with a high delivery and respectively an increased electrical power.
  • the net weight of the single hoisting device is very high (at a carrying capacity of 60 tons it is 320 to 400 kg).
  • lifting equipment which are only mechanically actuated, wherein the hoisting conveyance is secured by means of supporting nuts, screwed through a ratchet mechanism. The latter is actuated by means of a central hoist through a continuous cable.
  • Such lifting equipment is notable for its restricted carrying capacity (up to 2025 tons) of the individual hoisting device and for the rapid wear of the supporting spindles, the nuts and the axial bearings.
  • the hoisting devices of the lifting apparatus in accordance with the present invention are operated in accordance with electrohydro mechanical principles: with their own high pres sure charging pump up to 500 atm. individually driven by an electric motor and a mechanically or otherwise actuated synchronizing system securing the hoisting conveyance.
  • the automatic synchronization of the hoisting velocity of the hoisting devices included in this lifting equipment is ensured through a central control panel, supplied with information units, information processing elements, controls and other elements monitoring the hoisting process, all the elements of the panel being completely electrically operated.
  • FIG. l is a front elevation of a hoisting device in schematical representation
  • FIG. 2 is a side elevation of a hoisting device in schematical representation
  • FIG. 3 is a circuit diagram of the control panel
  • FIG. 4 is a diagram of the hoisting device operating mode:
  • FIG. 5 is a diagram of the hoisting device during the workingtstroke of the hydraulic jack.
  • FIG. 6 is a diagram of the hoisting device showing the return movement of the hydraulic jack.
  • the lifting equipment in accordance with the present invent'ion comprises a plurality of hoisting devices, a control panel and a plurality of connecting cables.
  • the hoisting devices represent a hauling up appliance (machine) with a carrying capacity in accordance with the requirements of the assembly procedure, e.g. 40 to 100 tons.
  • the hoisting devices (FIGS. 1 and 2) secure the hoisting conveyance by the reciprocating movement (FIG. 4, 5 and 6) of a built-in hydraulic jack 3, operated by means of a separate variable-stroke high pressure pump 5, driven by an electric motor.
  • the hoisting conveyance is achieved by means of supporting nuts 14 and 18, screwed through an automatically operated mechanism or an electrically driven system with a hydraulic clutch being synchronized with the movement of the jack 3.
  • Each hoisting device comprises the supporting spindles 13, with the upper supporting nuts 14 and the lower supporting nuts 18, an upper and a lower transverse bridge 1 and 2, a hydraulic jack 3, a synchronizing system including gears and a multilead spindle with a nut 7, a hydraulic unit including a distribution valve, a safety valve, a throttle and a manometer, an electric motor 4, a multipiston adjustable high pressure petroleum pump 5, a level indicator 8, interlocking contacts 10, electromagnets 9 for the control of the pump and a distribution'valve.
  • the control panel for the automatic synchronization is an electrically operated relay system, ensuring the synchronization of the hoisting velocity of a limitless number of hoisting devices, i.g. 24, 30, 36 and more, through the geometrical (in accordance the reference level) and the power (in accordance with the fluid pressure) levelling of the single hoisting devices and by the control of the supporting nuts.
  • the control panel for the automatic synchronization comprises a relay unit for the processing of the information supplied from each individual hoisting device, an illuminated'indicator panel with a fixed number of reference levels for the visual monitoring of the hoisting operations and the synchronization, a panel for the manual control of each individual hoisting device, a terminal panel, a current distribution panel and a plurality of connecting cables with couplings.
  • the lifting equipment operates in the following manner.
  • a determined number of hoisting devices are mounted on service supports (columns) 20 (FIG. 4) erected on the spots defined in the assembly project.
  • each individual hoisting device is fastened to the structure to be lifted.
  • every hoisting device is connected with the. central control panel, whereof it is supplied with electric power and through information signals about the position of the single hoisting devices the control panel performs the control operations, securing the synchronization of the complete hoisting equipment.
  • the hoisting operation begins at all suspension points simultaneously.
  • respective the level indicator 8 on one of the supporting spindles of each hoisting device
  • switches over on the next in turn second reference level spacing whereby its individual relay N releases the armature and closes the circuit of the luminous signal with diminished luminosity, an indication that the respective hoisting device is in an awaiting position.
  • the circuit of the electromagnet 9, controlling the pump of the respective hoisting device is opened when the allowable pressure is exceeded, thus securing the control of the lifting equipment in accordance with the geometrical level as well as with the fluid pressure.
  • the relay C and the group relay A (FIG. 3) of the first reference level spacing are disconnected, the group relay B (FIG. 3) of the second reference level spacing is switched on, the indicator lamps of the control panel illuminate with full luminosity, the relay C is energized and the hoisting operation goes on in the second reference level spacing.
  • the working stroke of the hoisting devices is accomplished, i.e. a hoisting conveyance up to a determined height (a reference levei spacing of 0.05 mm. and more, usually 2 to 4 mm.).
  • the levels are repeated periodically.
  • the hoisting conveyance of the supporting spindles is secured through the lower supporting nuts 18 (FIG. 1 the latter being closely screwed on the lower transverse bridge of the hoisting device.
  • the lifting equipment is secured against overloading, speedup or other breakdowns in each individual hoisting device in such a manner, that the control panel steps all the operation of the equipment automatically and signaiizes for the occurred incorrect operation.
  • every hoisting device is provided with a hydraulic safety valve, which can be adjusted on a determined pressure, a throttle for the damping of the mechanical stroke during the change over the return path and with electric interlocking contacts, the latter controlling the normal screwing operation of the supporting nuts.
  • control panel For the processing of the information, supplied by the different safety means, the control panel is provided with the respective safety interlocking circuits.
  • a system for elevating a body comprising a plurality of lifting devices spaced along said body and eachincluding an upper and a lower member, at least one threaded rod anchored to said body and extending through said members, a hydraulic jack coupling said members for separating same, an electromotor-driven pump connected to the respective jack for hydraulically energizing same, and mechanism on each of said members including a nut threadedly engaging the respective rod and operable to clamp said members along the rod; and synchronizing means for controlling said devices, said synchronizing means including first switch means individual to each of said devices for energizing the respective pump, second switch means common to ail said devices for energizing said first switch rneans upon the establishment of a predetermined elevation level at each said device, and third switch means individual to each said device and including a plurality of contacts representing a plurality of such levels and a wiper engaging the successive contacts of each third switch means upon the attainment of the corresponding
  • each of said devices is provided with a hydraulic network connecting the respective pump and jack and further comprising a reservoir, distribution valve means connecting said jack and said pump selectively with the reservoir, and damping means for restricting the contraction of said jack.
  • said first switch means includes a first relay connected in circuit with the respective pump on each said device, said second switch means inciudes a pair of relays associated with each of said levels for at least three such levels, and the contacts of said third switch means are connected in parallel with one relay of each of said pair assigned to the respective level.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Control And Safety Of Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US759424A 1967-09-20 1968-09-12 Lifting equipment for the assemblage in vertical direction of building constructions machines and plants Expired - Lifetime US3570813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG132367 1967-09-20

Publications (1)

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US3570813A true US3570813A (en) 1971-03-16

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Application Number Title Priority Date Filing Date
US759424A Expired - Lifetime US3570813A (en) 1967-09-20 1968-09-12 Lifting equipment for the assemblage in vertical direction of building constructions machines and plants

Country Status (6)

Country Link
US (1) US3570813A (de)
AT (1) AT306967B (de)
BE (1) BE718068A (de)
DE (1) DE1781280C3 (de)
NL (1) NL6813391A (de)
SE (1) SE358869B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764110A (en) * 1972-02-24 1973-10-09 Stirling Homex Corp Jacking means for raising buildings of modular construction
US20250207386A1 (en) * 2023-12-26 2025-06-26 PRAK Energy Inc. Construction system for erecting high-rise load-bearing frame structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3201088A (en) * 1961-11-13 1965-08-17 Internat Lift Slab Corp System for elevating building components
US3230784A (en) * 1961-12-11 1966-01-25 Heidenstam Erik Johan Von Jack and lifting equipment
US3244014A (en) * 1963-08-23 1966-04-05 John D Hamaker Mechanical thrust transmitting devices
US3278158A (en) * 1964-08-06 1966-10-11 Saldana Juan Angel Lifting mechanism, actuating means therefor and slab anchoring means therefor
US3389890A (en) * 1966-07-01 1968-06-25 Offshore Co Jacking apparatus and controls

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3201088A (en) * 1961-11-13 1965-08-17 Internat Lift Slab Corp System for elevating building components
US3230784A (en) * 1961-12-11 1966-01-25 Heidenstam Erik Johan Von Jack and lifting equipment
US3244014A (en) * 1963-08-23 1966-04-05 John D Hamaker Mechanical thrust transmitting devices
US3278158A (en) * 1964-08-06 1966-10-11 Saldana Juan Angel Lifting mechanism, actuating means therefor and slab anchoring means therefor
US3389890A (en) * 1966-07-01 1968-06-25 Offshore Co Jacking apparatus and controls

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764110A (en) * 1972-02-24 1973-10-09 Stirling Homex Corp Jacking means for raising buildings of modular construction
US20250207386A1 (en) * 2023-12-26 2025-06-26 PRAK Energy Inc. Construction system for erecting high-rise load-bearing frame structure

Also Published As

Publication number Publication date
DE1781280B2 (de) 1980-02-28
DE1781280A1 (de) 1970-12-10
NL6813391A (de) 1969-03-24
DE1781280C3 (de) 1980-10-16
AT306967B (de) 1973-05-10
BE718068A (de) 1968-12-16
SE358869B (de) 1973-08-13

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