EP0829445A1 - Appareil de traction avec récupération d'énergie et dispositif de contrÔle pour la phase de descente d'un ascenseur électrohydraulique - Google Patents

Appareil de traction avec récupération d'énergie et dispositif de contrÔle pour la phase de descente d'un ascenseur électrohydraulique Download PDF

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Publication number
EP0829445A1
EP0829445A1 EP96120572A EP96120572A EP0829445A1 EP 0829445 A1 EP0829445 A1 EP 0829445A1 EP 96120572 A EP96120572 A EP 96120572A EP 96120572 A EP96120572 A EP 96120572A EP 0829445 A1 EP0829445 A1 EP 0829445A1
Authority
EP
European Patent Office
Prior art keywords
motor
ride
phases
valve
control device
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Withdrawn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
EP96120572A
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German (de)
English (en)
Inventor
Angelo Mr. Martini
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.)
Fidimult BV
Original Assignee
Fidimult BV
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 Fidimult BV filed Critical Fidimult BV
Publication of EP0829445A1 publication Critical patent/EP0829445A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means

Definitions

  • the invention relates to an energy recovery drive and control device for the down ride phase of conventional electrohydraulic operation lifts, whose motor is not controlled by specific electronic devices that allow or do not allow energy recovery, substantially constituted of a hydraulic unit comprising drive and control devices, connected with the feed pump that drives lifts, and an electric motor for said pump, which can be caused to rotate in one direction during the up ride phases and in the same or the opposite direction during the down ride phases, independently on the opening condition of the down ride valve.
  • the pump caused to rotate in the same pr the opposite direction corresponding to the fixed one and independent, to some extent, on the network load and frequency applied to the motor, a braking action is obtained on the outlet of the operating fluid, and a sustaining pressure is caused in the hydraulic circuit, with closing of the control valve.
  • Such action allows to control the down ride speed of the lift independently on the load by the motor pump unit which becomes electrogeneous, a possible energy giving back to the feed electric line and a contained temperature increase of the operating fluid.
  • the present conventional electrohydraulic working lifts meaning by this term motors that are not electronically controlled as said above, are generally driven, during the down ride phase, by drive electrovalves that realise specific throttlings which choke the flow of the operating fluid and limit, within pre-fixed values, the down ride speed of the elevator car.
  • drive electrovalves that realise specific throttlings which choke the flow of the operating fluid and limit, within pre-fixed values, the down ride speed of the elevator car.
  • said working involves the need of dissipating into heat the energy deriving from the car mass because of the fall height of the same during the down ride phases.
  • the invention solves the problem by means of an energy recovery drive and control device for the down ride of conventional hydraulic operation lifts, in the sense specified several times, through which the following results are obtained: the device as a whole is so configured as to manage the down ride function of the lift through the action of the motor-driven pump; the feed pump of the hydraulic circuit of up/down rides of lifts is provided with fluid regulation and control means; in the down ride, the pump and the electric motor are caused to rotate in the same or the opposite direction with respect to the usual up ride direction, at the same rated speed and network frequency; on such conditions, the possible excess energy derived from the free down ride of cars is transformed into electric energy than can be discharged onto the network or be re-utilisable for other possible users by the motor dragged by the pump and operating as a generator.
  • the advantages obtained by this invention consist essentially in that, with limited and economical interventions related to the application of drive and control mechanisms on the pump, and a maintenance or inversion controls of the rotatory direction of the motor-driven pump group, it is possible to recover the possible excess energy produced by the mass of cars because of the fall height of the same during the down ride phases, bringing it back directly to the network or exploiting it for the running of auxiliary apparatuses and/or other utilisations.
  • Another advantages lies in that the excess fluid that discharges into the tank after having produced the possible recoverable energy, undergoes a very limited heating, whose elimination takes place naturally, without the presence of cooling devices and/or time running schedules.
  • the apparatuses chosen, for instance, refer to the commonest configuration marketed; however, it is evident that other solutions, with pumps and/or motors of a different type and suitably adapted may be used within the scope of the invention, to obtain the same aim.
  • the motor-driven pump unit (1) is associated to a hydraulic piston (4) through a feed valve (5) and a control valve (6),
  • the sliding part (7) of the hydraulic piston (4) engages with a car (8) through conventional connecting means.
  • the system operates substantially in the conventional manner: through the control board (10) the user presses the up ride button, obtaining in this way the start of the electric motor (3), for instance producing the excitation with RTS contacts.
  • the operating fluid is pumped from tank (11) to piston (4), the sliding part (7) is upwards pushed and car (8) lifts.
  • the system involves the control valve (6), connected to the drive pump (2).
  • the pressing of the down ride button located on the control board causes the counter-rotation start of the motor-driven pump (1) independently on the opening conditions of the down ride valve (5).
  • the down ride button causes, compared with the up ride one, a contrary excitation, for instance with RTS contact.
  • motor (3) may be started directly or through a star-delta start circuit, or also through tension variation circuits, without affecting the movement condition of car (8).
  • the possible electric energy given back by the motor-generator may be given back to the feed network to be economically exploited during the up ride phases of car (8) or, alternatively, it may be utilised by other users.
  • FIG. 2 shows a different solution of the drive and control device for the down ride phases of electrohydraulic operation lifts, wherein the motor-driven pump (1) keeps the same rotation direction both in the up and the down drives.
  • Pump (2) is connected to exchange electrovalves (12, 13, 14), which, located according to the shown configuration, allow the controlled discharging of the fluid into tank (11), during the down ride phase of the lift, produced by the braking action of the motor-driven pump unit (1) which operates on the same conditions of rotation direction and network frequency adopted during the up ride phases.
  • valves (12, 13, 14) located as shown in Figure 2
  • the fluid passes from piston (4) to the central valve (15), then through duct (16) of valve (12) and discharges into the tank through valve (13), pump (2) which rotates, and valve (14).
  • said electrovalves reverse the position of their passage lights (they shift rightwards according to the diagram of Figure 2).
  • Valves (13) and (14) block the passage of the fluid while the passage light (17) of valve (12) connects the delivery of pump (2) with the feed duct (18) of the central valve (15), and therefore of piston (4), pushing the latter upwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Elevator Control (AREA)
  • Fluid-Pressure Circuits (AREA)
EP96120572A 1996-09-13 1996-12-20 Appareil de traction avec récupération d'énergie et dispositif de contrÔle pour la phase de descente d'un ascenseur électrohydraulique Withdrawn EP0829445A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI961898 1996-09-13
IT96MI001898A IT1288416B1 (it) 1996-09-13 1996-09-13 Dispositivo di comando e controllo, a recupero d'energia, per la fase di discesa d'ascensori a funzionamento elettroidraulico

Publications (1)

Publication Number Publication Date
EP0829445A1 true EP0829445A1 (fr) 1998-03-18

Family

ID=11374884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96120572A Withdrawn EP0829445A1 (fr) 1996-09-13 1996-12-20 Appareil de traction avec récupération d'énergie et dispositif de contrÔle pour la phase de descente d'un ascenseur électrohydraulique

Country Status (2)

Country Link
EP (1) EP0829445A1 (fr)
IT (1) IT1288416B1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003002877A1 (fr) * 2001-06-26 2003-01-09 Halloran John J Systeme de stockage d'energie potentielle
US6971481B2 (en) 2001-11-23 2005-12-06 Bucher Hydraulics Ag Hydraulic elevator with motor controlled hydraulic drive and method for controlling the hydraulic elevator
US7134528B2 (en) 2001-11-16 2006-11-14 Bucher Hydraulics Ag Hydraulic elevator with valve for preventing discharge of pressure accumulator and method of controlling same
ITNA20110041A1 (it) * 2011-09-21 2013-03-22 C E P A Euro Company Programs Afri Ca Srl Sistema di generazione di energia elettrica mediante lo sfruttamento dell'energia potenziale gravitazionale
ITMI20130651A1 (it) * 2013-04-21 2014-10-22 Sancta Sophia Indago Et Incrementum S R L Ascensore oleodinamico reversibile
JP2018193192A (ja) * 2017-05-18 2018-12-06 三菱電機ビルテクノサービス株式会社 油圧エレベータ制御用バルブの配管脱着作業治具、配管取り外し方法、及び配管結合方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723107A (en) * 1986-01-28 1988-02-02 Steinbock Gmbh Hydraulic lifting mechanism
DE3836212A1 (de) * 1987-11-04 1989-05-24 Kone Elevator Gmbh Verfahren und vorrichtung zur leistungsverbesserung eines motorgesteuerten, hydraulischen aufzugs
WO1994005583A1 (fr) * 1992-08-31 1994-03-17 Captine Pty. Ltd. Ensemble a plusieurs cylindres et systeme d'entrainement a recuperation pour un ascenseur hydraulique
DE4402653A1 (de) * 1994-01-29 1995-08-03 Jungheinrich Ag Hydraulische Hubvorrichtung über drehbetriebene Flurförderzeuge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723107A (en) * 1986-01-28 1988-02-02 Steinbock Gmbh Hydraulic lifting mechanism
DE3836212A1 (de) * 1987-11-04 1989-05-24 Kone Elevator Gmbh Verfahren und vorrichtung zur leistungsverbesserung eines motorgesteuerten, hydraulischen aufzugs
WO1994005583A1 (fr) * 1992-08-31 1994-03-17 Captine Pty. Ltd. Ensemble a plusieurs cylindres et systeme d'entrainement a recuperation pour un ascenseur hydraulique
DE4402653A1 (de) * 1994-01-29 1995-08-03 Jungheinrich Ag Hydraulische Hubvorrichtung über drehbetriebene Flurförderzeuge

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003002877A1 (fr) * 2001-06-26 2003-01-09 Halloran John J Systeme de stockage d'energie potentielle
US6860068B2 (en) 2001-06-26 2005-03-01 John J. Halloran Potential energy storage system
US6996937B2 (en) 2001-06-26 2006-02-14 Halloran John J Potential energy storage system
US7770331B2 (en) 2001-06-26 2010-08-10 Halloran John J Potential energy storage system
US7134528B2 (en) 2001-11-16 2006-11-14 Bucher Hydraulics Ag Hydraulic elevator with valve for preventing discharge of pressure accumulator and method of controlling same
US6971481B2 (en) 2001-11-23 2005-12-06 Bucher Hydraulics Ag Hydraulic elevator with motor controlled hydraulic drive and method for controlling the hydraulic elevator
ITNA20110041A1 (it) * 2011-09-21 2013-03-22 C E P A Euro Company Programs Afri Ca Srl Sistema di generazione di energia elettrica mediante lo sfruttamento dell'energia potenziale gravitazionale
ITMI20130651A1 (it) * 2013-04-21 2014-10-22 Sancta Sophia Indago Et Incrementum S R L Ascensore oleodinamico reversibile
JP2018193192A (ja) * 2017-05-18 2018-12-06 三菱電機ビルテクノサービス株式会社 油圧エレベータ制御用バルブの配管脱着作業治具、配管取り外し方法、及び配管結合方法

Also Published As

Publication number Publication date
ITMI961898A1 (it) 1998-03-13
IT1288416B1 (it) 1998-09-22

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