EP0038633A2 - Antrieb mit Energiespeicherung, insbesondere für Lade- und Fahrbewegungen von Portalkranen - Google Patents

Antrieb mit Energiespeicherung, insbesondere für Lade- und Fahrbewegungen von Portalkranen Download PDF

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Publication number
EP0038633A2
EP0038633A2 EP81301366A EP81301366A EP0038633A2 EP 0038633 A2 EP0038633 A2 EP 0038633A2 EP 81301366 A EP81301366 A EP 81301366A EP 81301366 A EP81301366 A EP 81301366A EP 0038633 A2 EP0038633 A2 EP 0038633A2
Authority
EP
European Patent Office
Prior art keywords
energy
hydraulic
unit
energy storing
driving mechanism
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.)
Withdrawn
Application number
EP81301366A
Other languages
English (en)
French (fr)
Other versions
EP0038633A3 (de
Inventor
Andor Heller
Janos Pancsovai
Gyorgy Lipkovics
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.)
GANZ DANUBIUS Hajo- es Darugyar
Magyar Hajo es Darugyar
Original Assignee
GANZ DANUBIUS Hajo- es Darugyar
Magyar Hajo es Darugyar
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 GANZ DANUBIUS Hajo- es Darugyar, Magyar Hajo es Darugyar filed Critical GANZ DANUBIUS Hajo- es Darugyar
Publication of EP0038633A2 publication Critical patent/EP0038633A2/de
Publication of EP0038633A3 publication Critical patent/EP0038633A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices

Definitions

  • the invention relates to a driving mechanism with energy storing feed system, suitable to carry out loading-travelling motions of portal cranes with extremely favourable energy requirements, and by means of which these tasks can be carried out at a considerably reduced energy utilization as compared with known mechanisms.
  • the rotary quay cranes have characteristically four main motions, such as: lifting-lowering, rotary, derricking and travelling motions.
  • the lifting-lowering and the rotary motions function regularly in each work cycle, the derricking motion not always, while the travelling motion is occasional, the demand for which is determined by the existing loading technology characteristics of portal cranes.
  • the parameters of the described loading and travelling activities are connected with and characterized in that the accelerating motion, the motion of constant velocity and the decelerating motion occur nearly for the same length of time in each phase of movement.
  • the rotary and derricking motions of the crane usually do not even reach the rated velocity, the acceleration motion-phase passing directly into the braking phase of motion.
  • determination of the capacity requirement and dimension are considered in relation to accelerating and braking in order that these may be achieved within a short time.
  • the motors and brakes of the driving mechanisms are much more powerful and require much more energy, than they would be if only constant velocity were the objective.
  • the invention has for its object to provide a driving mechanism with which, in given and known conditions, the energy demand of a crane is less than that in known mechanisms.
  • operation can be ensured with significant saving of electric power, and the material handling capacity of the cranes and/or goodsreceiving terminals can be increased without new network development and without the demand for extra energy.
  • a further object is to allow operation of larger cranes at the same cost level.
  • a further object is to provide a simpler and finer speed control in the operation of a crane, to reduce the weight of the structural elements, and to improve significantly the value of cos .
  • the system is also to'be structurally simplified.
  • a drive mechanism with energy storing feed system particularly for carrying out loading and travelling motions of portal cranes, characterized in that the driving mechanism has a hydraulic supply unit (2) arranged to drive a hydraulic motor (3) in driving connection with an element (1) to be driven, the hydraulic supply unit (2) being arranged to drive the hydraulic motor in synchronous operation with a hydraulic reversing unit (4), which is also in driving connection with the element (1) to be driven, and an energy storing unit (5) provided with a charger (6) in functional connection with the hydraulic reversing unit (4).
  • the invention is thus based on the recognition that the described advantages and objectives can be realized with such a system which is capable of storing the braking energy adequately during the braking phase, and to feed back the same energy in the following acceleration phase, with at negligible loss, into the system to assist such acceleration.
  • the recognition was based also on the fact, that several such stable structural masses can be found in the crane which may serve as means for storing the energy.
  • a hydraulic motor 3 is shown in functional connection with a hydraulic supply unit 2.
  • the motor 3 is drivingly connected with a element 1 to be driven.
  • An energy storiny unit 5 provided, with a charger 6. This is in functional connection with a stationary counterweight block 7 and/or an oil-air cataract type storage tank 8.
  • the structural units of the driving mechanism according to Figure 1 are connected to each other in such a way, that when brought into motion with the driven element 1, the hydraulic supply unit 2 starts the hydraulic motor 3, which is in driving connection with the element 1 to be driven. At the same time the reversing unit 4 starts and the energy for which is supplied by the energy storing unit 5.
  • the driven element 1 receives starting power from two sides, partly from the hydraulic motor 3 and partly from the reversing unit 4.
  • the reversing unit 4 functions, during bracing not as a driving unit, but as a braking motor transmitting. the energy into the energy storing unit, while making use of the braking energy transmitted into the energy storing unit 5, for instance to shift the counterweight block 7, the opposite movement of which is capable of providing the extra energy, through the reversing unit 4, necessary for acceleration, as described.
  • the charger 6 built into the energy storing unit supplies the first charge and renews the loss during operation.
  • the driving mechanism may consist of one or several hydraulic supply units 2, one or several hydraulic motors 3, one or several reversing units 4, which are in functional connection with the element 1 to be driven.
  • Switching the mechanism on and off can be carried cut by conventional automatic means.
  • an overload inhibiting device 9 shown in Figure 4 sensing the force capability may be provided.
  • Such a means may sense the force acting on the cable of the lifting mechanism to switch on or off, for acceleration or deceleration, the hydraulic motors 3 and reversing units 4.
  • an economic apparatus can be developed-in the lifting mechanism of a crane, where various load bearings and pertaining speed demands exist.
  • the energy storing unit 5 may be for instance a hydraulic storing cylinder.
  • the weight 7 carried on it may also be the stabilizing counterweight of the crane.
  • it may be the rotary part of the crane itself, provided that, in this case, the hydraulic cylinder is built in between the thrust bearing of the crane and its tower.
  • One arrangement of rotating mechanism is shown in Figure 2.
  • Figure 3 shows the arrangement as applied to the lifting mechanism of a crane and Figure 4 shows a similar system in a multiple load bearing portal crane.
  • This figure also shows an oil-air cataract type storage tank 8 serving as the energy storing unit. It is possible to employ such a storage tank arrangement with a counterweight arrangement in combination, to serve as the energy storing unit. unit.
  • the energy storing unit 5 and hydraulic supply unit 2 are not necessarily arranged on the rotary part of the crane.
  • they can be arranged on the floating bridge, if in this way, the height of the centre of gravity of the floating crane can be favourably improved,
  • hydraulic conduits may be conducted through the centre of the thrust bearing with hydraulic connections ensuring the conventional degree of rotational freedom.
  • the floating crane is of non-rotary typs and the principle is applied to the lifting mechanism or to the jib motion.
  • the driving mechanism thus described is suitable for realization of the objectives and is capable of meeting known development requirements by ensuring energy saving with so far unknown efficiency compared with the solutions existing up to now.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)
EP81301366A 1980-04-18 1981-03-30 Antrieb mit Energiespeicherung, insbesondere für Lade- und Fahrbewegungen von Portalkranen Withdrawn EP0038633A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HUMA000941 1980-04-18
HU94180A HU184741B (en) 1980-04-18 1980-04-18 Drive mechanism with power-storage supply system particularly for loading-advancing motions of portal cranes

Publications (2)

Publication Number Publication Date
EP0038633A2 true EP0038633A2 (de) 1981-10-28
EP0038633A3 EP0038633A3 (de) 1982-03-10

Family

ID=10952131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301366A Withdrawn EP0038633A3 (de) 1980-04-18 1981-03-30 Antrieb mit Energiespeicherung, insbesondere für Lade- und Fahrbewegungen von Portalkranen

Country Status (2)

Country Link
EP (1) EP0038633A3 (de)
HU (1) HU184741B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007048A1 (de) * 1995-08-16 1997-02-27 Vulkan Kocks Gmbh Antriebssystem für hebezeuge mit energieausgleichseinrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE317649C (de) *
DE891503C (de) * 1951-12-30 1954-01-11 Daimler Benz Ag Antrieb von Fahrzeugen, insbesondere Omnibussen, unter Verwendung eines Schwungmassenkreisels
DD37833A1 (de) * 1965-04-05
US3294369A (en) * 1964-05-08 1966-12-27 Gen Electric Co Ltd Variable speed drives
US3903696A (en) * 1974-11-25 1975-09-09 Carman Vincent Earl Hydraulic energy storage transmission
DE2451021A1 (de) * 1974-10-26 1976-05-06 Maschf Augsburg Nuernberg Ag Speichervorrichtung zum einspeichern und wiederabgeben von bremsenergie
DE2841978A1 (de) * 1978-09-27 1980-04-10 Joerg Dipl Ing Lensing Bremsenergiespeicher

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE317649C (de) *
DD37833A1 (de) * 1965-04-05
DE891503C (de) * 1951-12-30 1954-01-11 Daimler Benz Ag Antrieb von Fahrzeugen, insbesondere Omnibussen, unter Verwendung eines Schwungmassenkreisels
US3294369A (en) * 1964-05-08 1966-12-27 Gen Electric Co Ltd Variable speed drives
DE2451021A1 (de) * 1974-10-26 1976-05-06 Maschf Augsburg Nuernberg Ag Speichervorrichtung zum einspeichern und wiederabgeben von bremsenergie
US3903696A (en) * 1974-11-25 1975-09-09 Carman Vincent Earl Hydraulic energy storage transmission
DE2841978A1 (de) * 1978-09-27 1980-04-10 Joerg Dipl Ing Lensing Bremsenergiespeicher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007048A1 (de) * 1995-08-16 1997-02-27 Vulkan Kocks Gmbh Antriebssystem für hebezeuge mit energieausgleichseinrichtung

Also Published As

Publication number Publication date
HU184741B (en) 1984-10-29
EP0038633A3 (de) 1982-03-10

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Inventor name: PANCSOVAI, JANOS

Inventor name: HELLER, ANDOR