EP0555635A1 - Procédé et dispositif de réduction de la puissance motrice d'un ascenseur hydraulique - Google Patents

Procédé et dispositif de réduction de la puissance motrice d'un ascenseur hydraulique Download PDF

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Publication number
EP0555635A1
EP0555635A1 EP93100258A EP93100258A EP0555635A1 EP 0555635 A1 EP0555635 A1 EP 0555635A1 EP 93100258 A EP93100258 A EP 93100258A EP 93100258 A EP93100258 A EP 93100258A EP 0555635 A1 EP0555635 A1 EP 0555635A1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder unit
cylinder
elevator car
counterweight
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Withdrawn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
EP93100258A
Other languages
German (de)
English (en)
Inventor
Heinz-Dieter Nagel
Jörg Christians
Gerald Lechler
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Publication of EP0555635A1 publication Critical patent/EP0555635A1/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Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration

Definitions

  • the invention relates to a method and a device for reducing the drive power for a hydraulic elevator, according to the preamble of main claims 1 and 3.
  • a hydraulic elevator in which a hydraulic piston-cylinder unit is arranged laterally next to the elevator car in the shaft.
  • the cylinder of the piston-cylinder unit is set up on a bracket in the shaft pit and has a rope pulley under the bracket.
  • two further rope pulleys are arranged at the upper end of the piston of the piston-cylinder unit.
  • One end of a hoisting rope is fixed to the shaft wall in the area of the console of the piston-cylinder unit, the other end on the opposite side in the upper area of the elevator shaft.
  • the hoist rope runs from the lower fixed point over the first deflection roller of the piston, over the lower deflection roller of the cylinder, then over the second deflection roller of the piston, over two lower deflection rollers arranged in the floor area of the elevator car to the upper fixed point in the shaft.
  • the elevator car thus hangs in the lower deflection pulleys of the elevator car in a loop of the hoisting rope pointing downwards. Due to the 4: 2 suspension of the hoisting rope, the elevator car moves at twice the piston speed when the piston is moved and executes twice the piston path. Without taking the friction losses into account, the compressive force on the piston of the piston-cylinder unit corresponds to twice the value of the weight of the elevator car and the lifted load.
  • DE-OS 38 36 212 is a method and a device for improving the performance of a motor-controlled hydraulic Elevator has become known in which the travel speed of the elevator car is controlled by changing the rotational speed of the electric motor driving the pump.
  • the improvement in performance and the reduction in the thermal load on the electric motor is achieved in that when the elevator is driven in the downward direction, the oil pressure in the main line is reduced to a predetermined, constant level with the aid of a lowering valve, the lowering valve providing one with the flow volume the lowering valve controlling the pressure compensation valve provided return to the main line.
  • a lower amount of electrical energy is thus required during the downward travel, which also reduces the thermal load on the electric motor.
  • the object of the invention is to reduce the drive power and the operating costs for a hydraulic elevator system to a minimum by an advantageous combination of different devices.
  • 1 and 2 1 denotes an elevator car.
  • the elevator car 1 is carried with deflection rollers 2 located below in a lower loop 4 of a hoisting rope 3 .
  • a first end 5 of the lifting cable 3 is fixed in the lower area 8 of a shaft 7
  • a second end 6 of the lifting cable 3 is fixed in the upper area 9 of the shaft 7 .
  • the cylinder 11 of a piston-cylinder unit 10 is set up on a bracket 12 .
  • a cable deflection roller 13 is rotatably mounted on the console 12 .
  • two rope deflection rollers 17, 18 are rotatably mounted.
  • the piston 14 has an annular pressure surface 19 on the side of the piston rod 15 and a circular pressure surface 20 on the opposite side.
  • the lifting rope 3 runs from the first fixed end 5 over the first rope deflection roller 17 at the head end 16 of the piston rod 15 , over the rope deflection roller 13 of the bracket 12 , over the second rope deflection roller 18 at the head end 16 of the piston rod 15 and over the two deflection rollers 2 arranged on the elevator car 1 to the second fixed end 6 in the upper region 9 of the shaft 7 .
  • a device 22 for receiving a counterweight 23 is fixed in a shaft head 21 of the shaft 7 .
  • the device 22 consists of a support beam 24 with two support points 25, 26 , two rope deflection rollers 27 , 28 and a fixed point 29 for the attachment of a counterweight cable 30 .
  • a third deflection roller 31 is arranged for the deflection of the counterweight cable 30 .
  • Fig. 3 the cabin is again designated 1 .
  • the cabin is guided by cabin guides 32 in guide rails 33 in the shaft 7 in the vertical direction and carried by the lifting rope 3 via the deflection rollers 2 .
  • the counterweight 23 is guided in the vertical direction by counterweight guides 34 in guide rails 35 and hangs on the counterweight cable 30 .
  • the piston-cylinder unit 10 is arranged laterally between the cabin 1 and a side wall of the shaft 7 and fixed on a bracket on the shaft base.
  • the two deflection rollers 17, 18 for the hoist rope 3 of the elevator car 1 and the third deflection roller 31 for the counterweight rope 30 are arranged.
  • An entrance opening 36 of the elevator car 1 is closed by a car door 37 and an access opening 38 to the shaft 7 is closed by a shaft door 39 .
  • 41 denotes a piston-cylinder unit.
  • the piston-cylinder unit 41 consists of a cylinder 42 , a piston 43 and a piston rod 44 .
  • a connection 45 opens into the cylinder 42 on the side of the piston rod 44 and a connection 46 on the side of the piston 43.
  • a line 45.1 connected to a flow control or lowering brake valve 47 connects.
  • connection 46 there is a line 46.1 connected to the outlet of a proportional directional control valve 48 .
  • the proportional directional control valve 48 has a central position and two working positions A and B.
  • the flow control valve 47 is connected to a line 47.1 is also directly to the output side of the proportional directional control valve 48 and connected via a spring-loaded check valve 49 together with a main line 50.1 and to the input side of the proportional directional control valve 48th
  • Another connecting line 48.1 connects the input side of the Proportional directional control valve 48 via a spring-loaded check valve 51 with an oil pan 52 .
  • a tachometer generator 53 is arranged on the elevator car, which determines the travel speed of the elevator car 1 and cooperates with a speed controller 54 of an elevator control 60 .
  • the speed controller 54 compares the actual speed with the desired value and operated by a first proportional amplifier 55, the proportional directional valve 48 and influenced by a second proportional amplifier 55 is a proportional pressure limiting valve 56 regulate to the required for a given running speed of the elevator car 1 in the hydraulic circuit pressure.
  • the proportional pressure relief valve 56 is connected on the inlet side to the main line 50.1 and on the outlet side to the oil pan 52 .
  • the main line 50.1 has a spring-loaded check valve 57 and connects the input side of the proportional directional control valve 48 to a pump unit 50 , which consists of a pump 58 and an electric motor 59 .
  • the counterweight 23 is designed such that it balances the entire weight of the elevator car 1 and, for example, half the load capacity of the elevator car 1 .
  • the force required on the piston rod 15 corresponds to the piston-cylinder unit 10: At no load: The full capacity of the elevator car in the upward direction; at full load: The full capacity of the elevator car in the downward direction.
  • the counterbalance 23 can be used to balance the weight so that the force exerted on the piston rod 15 is as small as possible with the most frequently occurring cabin loads.
  • a first volume flow flows from the pump 58 via the proportional directional control valve 48 actuated into position B to the connection 46 of the cylinder 42 and at the same time a second volume flow flows from the connection 45 of the cylinder 42 via the flow control valve 47 and via the spring-loaded check valve 49 into the main line 50.1 and also to the proportional directional control valve 48 in order to get into the cylinder 42 together with the first volume flow emanating from the pump 58 at the connection 46 on the piston 43 side.
  • the speed controller 54 and the proportional pressure limiting valve 56 have the task of continuously regulating the pressure required for a desired travel speed of the elevator car 1 in the hydraulic circuit.
  • the nominal speed of the elevator car 1 is directly depending on the volume flow rate, it can never be higher than the nominal speed resulting from the maximum possible pump volume flow.
  • the flow control valve 47 interrupts the volume flow from the piston-cylinder unit 41 without leakage. In the present example, the flow control valve 47 is only provided on the piston rod side because the elevator car 1 is normally empty during the waiting time between two elevator movements, so that the pressure on the piston rod side is present. An additional flow control valve 47 on the opposite side of the piston is useful, when the leakage of the proportional directional control valve 48 during the loading too large.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Elevator Control (AREA)
  • Fluid-Pressure Circuits (AREA)
EP93100258A 1992-02-10 1993-01-11 Procédé et dispositif de réduction de la puissance motrice d'un ascenseur hydraulique Withdrawn EP0555635A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH39092 1992-02-10
CH390/92 1992-02-10

Publications (1)

Publication Number Publication Date
EP0555635A1 true EP0555635A1 (fr) 1993-08-18

Family

ID=4185919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100258A Withdrawn EP0555635A1 (fr) 1992-02-10 1993-01-11 Procédé et dispositif de réduction de la puissance motrice d'un ascenseur hydraulique

Country Status (10)

Country Link
US (1) US5443140A (fr)
EP (1) EP0555635A1 (fr)
JP (1) JPH05254758A (fr)
AU (1) AU657834B2 (fr)
CA (1) CA2087422A1 (fr)
CZ (1) CZ3093A3 (fr)
FI (1) FI930545A7 (fr)
HU (1) HU214069B (fr)
NO (1) NO930437L (fr)
SK (1) SK1793A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19842052B4 (de) * 1997-09-17 2014-02-06 Otis Elevator Co. Aufzug mit verringertem Gegengewicht

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5901814A (en) * 1996-10-28 1999-05-11 Otis Elevator Company Hydraulic elevator having a counterweight
US6085872A (en) * 1998-03-25 2000-07-11 Thyssen Elevator Holding Corporation Roped hydraulic elevator
JP4131764B2 (ja) * 1998-09-01 2008-08-13 東芝エレベータ株式会社 エレベータ装置
US6659231B2 (en) * 2002-03-12 2003-12-09 Inventio Ag Self-balancing synchronization assembly for a hydraulic elevator
US7946391B2 (en) * 2005-07-19 2011-05-24 Bucher Hydraulics Ag Hydraulic elevator without machine room
US8210319B2 (en) * 2007-08-31 2012-07-03 John W. Boyd Hydraulic elevating platform assembly
DE102022105674A1 (de) 2022-03-10 2023-09-14 Tk Elevator Innovation And Operations Gmbh Aufzugsanlage zum Transport von Personen und/oder Transportgut

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735310A1 (de) * 1977-08-05 1979-02-15 Florian Prates Indirekter hydraulischer antrieb mit gegengewicht fuer einen aufzug
DE3002577A1 (de) * 1980-01-25 1981-07-30 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Hydraulischer aufzug mit indirekt wirkendem antrieb
DE3629032A1 (de) * 1986-08-27 1988-04-14 Haushahn C Gmbh Co Hebezeug, insbesondere aufzug
DE3836212A1 (de) * 1987-11-04 1989-05-24 Kone Elevator Gmbh Verfahren und vorrichtung zur leistungsverbesserung eines motorgesteuerten, hydraulischen aufzugs

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10017A (en) * 1853-09-13 Improved cutter-head for molding-machines
US551765A (en) * 1895-12-24 Hydraulic elevator
US482247A (en) * 1892-09-06 Elevator
BE795282A (fr) * 1972-02-24 1973-05-29 Poclain Sa Generateur de vibrations utilisant un verin a fluide
US3977497A (en) * 1975-02-26 1976-08-31 Armor Elevator Company, Inc. Hydraulic elevator drive system
JPS63180684U (fr) * 1987-05-14 1988-11-22
JPH03873A (ja) * 1989-05-30 1991-01-07 Sanyo Chem Ind Ltd 繊維用処理剤

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735310A1 (de) * 1977-08-05 1979-02-15 Florian Prates Indirekter hydraulischer antrieb mit gegengewicht fuer einen aufzug
DE3002577A1 (de) * 1980-01-25 1981-07-30 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Hydraulischer aufzug mit indirekt wirkendem antrieb
DE3629032A1 (de) * 1986-08-27 1988-04-14 Haushahn C Gmbh Co Hebezeug, insbesondere aufzug
DE3836212A1 (de) * 1987-11-04 1989-05-24 Kone Elevator Gmbh Verfahren und vorrichtung zur leistungsverbesserung eines motorgesteuerten, hydraulischen aufzugs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19842052B4 (de) * 1997-09-17 2014-02-06 Otis Elevator Co. Aufzug mit verringertem Gegengewicht

Also Published As

Publication number Publication date
CZ3093A3 (en) 1993-08-11
FI930545A0 (fi) 1993-02-09
HU214069B (en) 1997-12-29
HUT66352A (en) 1994-11-28
HU9300280D0 (en) 1993-04-28
CA2087422A1 (fr) 1993-08-11
SK1793A3 (en) 1993-09-08
FI930545A7 (fi) 1993-08-11
JPH05254758A (ja) 1993-10-05
NO930437L (no) 1993-08-11
US5443140A (en) 1995-08-22
AU3289293A (en) 1993-08-12
AU657834B2 (en) 1995-03-23
NO930437D0 (no) 1993-02-09

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