EP0254840B1 - Verfahren und Anlage zum Heben und Senken einer Last durch Hydraulik-Linearmotor - Google Patents

Verfahren und Anlage zum Heben und Senken einer Last durch Hydraulik-Linearmotor Download PDF

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Publication number
EP0254840B1
EP0254840B1 EP19870108004 EP87108004A EP0254840B1 EP 0254840 B1 EP0254840 B1 EP 0254840B1 EP 19870108004 EP19870108004 EP 19870108004 EP 87108004 A EP87108004 A EP 87108004A EP 0254840 B1 EP0254840 B1 EP 0254840B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic cylinder
hydraulic
piston
load
linear motor
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
EP19870108004
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German (de)
English (en)
French (fr)
Other versions
EP0254840A2 (de
EP0254840A3 (en
Inventor
Alex Karl Gebauer
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
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Inventio AG
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Publication date
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Publication of EP0254840A2 publication Critical patent/EP0254840A2/de
Publication of EP0254840A3 publication Critical patent/EP0254840A3/de
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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to a system for lifting and lowering a payload, the dead load-forming receiving means, the lifting device having a double-acting lifting and lowering hydraulic cylinder hydraulic linear motor, in which the hydraulic cylinder penetrating piston rods on both sides has a stationary holder for the Form pistons of the linear motor and are anchored at their two ends in locking the surroundings and the total load composed of dead load and payload is operatively connected to the hydraulic cylinder by means of a cable run over rollers.
  • the electric drive motor can start without load, can therefore be started with starting resistors or in a star-delta connection and therefore only requires 1.8 to 2.2 times the starting current. while the mechanical drive requires about 3.5 times the starting current.
  • a hydraulic elevator with indirectly acting drive in which a car, with the interposition of a 2: 1 deflected hoisting rope, is moved by a hydraulic piston-cylinder unit, the moving part, the Cylinder, a rope pulley and at the same time a counterweight are arranged.
  • This counterweight corresponds to twice the load of the car, increased by twice the value of half the payload.
  • the hoist rope connected to the car runs over two rope pulleys anchored to the top of the shaft and over the loose rope pulley arranged on the cylinder and is firmly anchored at the other end to the top of the shaft.
  • the fixed part of the piston-cylinder unit, the piston rod, is anchored at the top and bottom of the shaft and has connections for hydraulic lines at the top and bottom, which are connected to a hydraulic pump. Through these hydraulic lines, a pressure medium is pressed through the piston rod into the cylinder, the cylinder moving upwards or downwards and the car connected to the cylinder via the 2: 1 deflected hoisting rope simultaneously moving downwards or upwards at twice the speed of the cylinder.
  • a disadvantage of this device is that the balance weight has to be built up on the cylinder of the hydraulic piston-cylinder unit and is therefore difficult to implement in lifting systems which have a very large dead load compared to the payload.
  • the invention is therefore based on the object of proposing a hydraulic lifting device with low drive power for lifting and lowering large dead loads, in which the counterweight is indirectly connected to the moving part of the piston-cylinder unit.
  • An advantage of the invention is that the lifting device is also able to pull the car down if the counterweight is empty when the car is empty due to the compensation of the dead load and (partly) the payload.
  • full load balancing for example in the case of lock elevators, when the drive only has to overcome the friction of the various elements in both directions of travel.
  • the lifting device shown in FIG. 1 has a hydraulic linear motor 1, which is composed of a double-acting hydraulic cylinder 2, a piston 3 and two piston rods 4 fastened to the piston 3.
  • the piston rods 4 extend here on both sides through the end faces of the hydraulic cylinder 2.
  • the piston 3 and the two piston rods 4 are stationary, the ends 5 of the piston rods 4 at points 6, e.g. are anchored to the floor and ceiling of a shaft.
  • the piston rods 4 are hollow and have a longitudinal bore 7 which, as a supply line for the pressure medium, open into the two partial chambers 8, 9 of the hydraulic cylinder 2 formed by the piston 3.
  • a transmission element for example a roller 12, is attached to the upper end 10 of the hydraulic cylinder 2 and forms part of a cable pull 13 to which a car 14 which can be loaded with a payload is attached.
  • the Rope 17 of the cable pull 13 guided over rollers 15, 16 is fastened to a fixing point 18.
  • the cable pull 13 In the operative connection of the cable pull 13 with the hydraulic linear motor 1 shown in FIG. 1, the cable pull 13 has a 2: 1 ratio, i.e. the car 14 executes the double path of the hydraulic cylinder 2.
  • the operative connection between the cable 13 and the hydraulic cylinder 2 can be realized in a different way.
  • the hydraulic pump 21 draws in the pressure medium from a reservoir 22 via a line 24 provided with a filter 23 and conveys it through a pressure line 25 to a spring-loaded, magnetically actuated 4/3-way valve 26 with which the direction of movement of the hydraulic Linear motor 1 is selected.
  • Feed lines 34, 35 lead from the directional control valve 26 to the longitudinal bores 7 of the piston rods 4.
  • a return line 36 is controlled by two drain valves 27, 28.
  • an accumulator 32 is acted upon via branch lines 37, 38, while a further connection 39 leads from the pressure line 25 via a pressure reducing valve 31 to the accumulator 32.
  • Check valves 40 complete the control of the hydraulic linear motor 1.
  • An essential component of the lifting device according to FIG. 1 is a counterweight 41, with which the weight of the car 14, ie the dead load, is reduced completely and part of the payload, preferably half the payload, to reduce the drive line. be balanced.
  • the counterweight 41 is firmly connected to the hydraulic cylinder 2. According to the 2: 1 ratio of the cable 13, the counterweight 41 has twice the value of both the dead load and the partial payload.
  • the balance weight 41 is correspondingly large.
  • the attachment of the balance weight 41 to the hydraulic cylinder 2 can be dispensed with and the balance weight 41 'can be attached directly to the car 14 using a cable (shown in dashed lines).
  • the balance weight 41 'then becomes only half as large as the balance weight 41 on the hydraulic cylinder 2.
  • the hydraulic cylinder 2 must have a transmission means, for example a roller 12, on both sides at its ends 10, 11, so that it is able to pull the car 14 down, so that the (partial) payload compensation in the counterweight over the Cables can be moved upwards. If the payload is fully balanced, as can be the case with a lock elevator, for example, the drive only has to overcome the friction of the various elements.
  • FIG. 4 a lifting device is shown in which the transmission means arranged at the upper end 10 of the hydraulic cylinder 2, i.e. the rollers 12, two cables 13 are arranged symmetrically to the hydraulic linear motor 1, with the cables 13 achieving a space-saving suspension of the car 14, see FIG. 5.
  • the balance weight 41 is arranged in two parts on both sides of the hydraulic cylinder 2.
  • the two rollers 12 are attached to the balance weight 41 at an angle to one another, while the rollers 15 are arranged on both sides of the car 14.
  • the rollers 16 can be omitted here.
  • the ropes of the cable pulls 13 are attached to brackets 43 on both sides of the car. Rails 45 are used to guide the car 14 in the shaft 44.
  • the stationary arrangement of the piston rods 4 and the execution of the lifting movement by the hydraulic cylinder 2 ensure that the piston rods 4 are essentially only subjected to tension and therefore there are no buckling problems, even if counterweights 41, 41 'are used.
  • FIG. 1 A longitudinal section of a partially illustrated hydraulic linear motor 1 can be seen from FIG.
  • the hydraulic cylinder 2 essentially consists of two tubes 48, 49 provided with a cylinder head 46, 47, together, which are held together by a pipe coupling 50, which is composed of two half-shells 50 ', 50''which are placed over a sleeve 52 provided with sealing rings 51 and are held together by tensioning straps.
  • the hydraulic cylinder 2 can be made as long as required by additional pipe sections 48, 49 by pipe couplings 50.
  • the piston 3 has sealing means 53 and on both sides a hollow socket 54 with an internal thread, into which a coupling tube 55 is screwed.
  • a piston rod tube 56, 57 is screwed onto the other end of the coupling tube 55. Any number of such piston rod tubes can now be lined up with the help of coupling tubes 55.
  • a connecting pipe 58 is screwed, to which the feed lines 34, 35 open and which has a fastening means 59, e.g. a hook or an eyelet (not shown).

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Actuator (AREA)
EP19870108004 1986-06-11 1987-06-03 Verfahren und Anlage zum Heben und Senken einer Last durch Hydraulik-Linearmotor Expired - Lifetime EP0254840B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH236986A CH674641A5 (enrdf_load_stackoverflow) 1986-06-11 1986-06-11
CH2369/86 1986-06-11

Publications (3)

Publication Number Publication Date
EP0254840A2 EP0254840A2 (de) 1988-02-03
EP0254840A3 EP0254840A3 (en) 1990-05-30
EP0254840B1 true EP0254840B1 (de) 1993-05-05

Family

ID=4232162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870108004 Expired - Lifetime EP0254840B1 (de) 1986-06-11 1987-06-03 Verfahren und Anlage zum Heben und Senken einer Last durch Hydraulik-Linearmotor

Country Status (3)

Country Link
EP (1) EP0254840B1 (enrdf_load_stackoverflow)
CH (1) CH674641A5 (enrdf_load_stackoverflow)
DE (1) DE3785701D1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045321A1 (de) * 2007-09-21 2009-04-02 Siemens Ag Flugstromvergaser mit Kühlschirm und Wellrohrkompensator

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413165A1 (de) * 1994-04-15 1995-10-19 Rexroth Mannesmann Gmbh Hydraulische Hubeinrichtung zum Heben und Senken einer Last
US6513627B1 (en) 1998-09-04 2003-02-04 Rupert John Cruise Deep level mine shaft hybrid conveyance system
ATE246142T1 (de) * 1999-05-19 2003-08-15 Wittur Ag Hydraulischer aufzug
EP1208057B1 (de) 1999-08-25 2003-07-02 Bucher Hydraulics AG Hydraulischer aufzug mit einem als gegengewicht wirkenden druckspeicher und verfahren zum steuern und regeln eines solchen aufzugs
PT1365985E (pt) * 2001-02-13 2005-02-28 Delaney Machinerie Inc Sistema para levantar e mover objectos
CA2335897C (fr) 2001-02-13 2006-01-24 Delaney Machinerie Inc. Systeme pour soulever et deplacer une charge
WO2005082766A2 (de) * 2004-02-24 2005-09-09 Anna Widmann Hydraulischer antrieb mit feststehendem kolben für aufzüge
ITGE20080106A1 (it) * 2008-12-19 2010-06-20 Filippo Rolla S R L Ascensore idraulico
WO2017171597A1 (en) * 2016-03-31 2017-10-05 Saab Ab A counterweighted roped hydraulic lifting system
WO2019226084A1 (en) * 2018-05-22 2019-11-28 Saab Ab Vertical transportation system operated by hydraulic linear actuator arrangement
CN116374892B (zh) * 2023-06-05 2023-08-08 新乡中铁公路发展有限公司 一种适用不平整地面的自稳叉车

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2274543A1 (fr) * 1974-06-13 1976-01-09 Petit Georges Perfectionnements aux ponts elevateurs
DE3002577A1 (de) * 1980-01-25 1981-07-30 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Hydraulischer aufzug mit indirekt wirkendem antrieb
DE3465968D1 (en) * 1983-07-22 1987-10-15 Gebauer & Cie Sliding piston drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045321A1 (de) * 2007-09-21 2009-04-02 Siemens Ag Flugstromvergaser mit Kühlschirm und Wellrohrkompensator
DE102007045321B4 (de) * 2007-09-21 2009-07-02 Siemens Ag Flugstromvergaser mit Kühlschirm und Wellrohrkompensator

Also Published As

Publication number Publication date
EP0254840A2 (de) 1988-02-03
DE3785701D1 (de) 1993-06-09
EP0254840A3 (en) 1990-05-30
CH674641A5 (enrdf_load_stackoverflow) 1990-06-29

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