EP1409792B1 - Hubeinrichtung - Google Patents

Hubeinrichtung Download PDF

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Publication number
EP1409792B1
EP1409792B1 EP02790170A EP02790170A EP1409792B1 EP 1409792 B1 EP1409792 B1 EP 1409792B1 EP 02790170 A EP02790170 A EP 02790170A EP 02790170 A EP02790170 A EP 02790170A EP 1409792 B1 EP1409792 B1 EP 1409792B1
Authority
EP
European Patent Office
Prior art keywords
clamping
accordance
pressure
lifting apparatus
cylinder
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
EP02790170A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1409792A1 (de
Inventor
Erich Wirzberger
Stephen George Hopper
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.)
Posford Haskoning Ltd
Bosch Rexroth AG
Original Assignee
Bosch Rexroth AG
Posford Haskoning Ltd
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
Priority claimed from DE10163691A external-priority patent/DE10163691B4/de
Application filed by Bosch Rexroth AG, Posford Haskoning Ltd filed Critical Bosch Rexroth AG
Publication of EP1409792A1 publication Critical patent/EP1409792A1/de
Application granted granted Critical
Publication of EP1409792B1 publication Critical patent/EP1409792B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/24—Bridges or similar structures, based on land or on a fixed structure and designed to give access to ships or other floating structures
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/262—Locking mechanisms using friction, e.g. brake pads
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B2015/268—Fluid supply for locking or release independent of actuator pressurisation

Definitions

  • the invention relates to a lifting device, as defined in the preamble of claim 1.
  • a lifting device is eg from the GB-A-1 442 983 known.
  • Such lifting devices are used for example in a quay installed at a quay, the platform or ramp (link span) is hinged with one end to the quay, while the other end portion is aligned via hydraulic cylinder with respect to the bottom of the hold of the ferry so that the vehicles into the ferry or out of the ferry can drive out.
  • two parallel hydraulic cylinders are used for pivoting and supporting the ramp. Malfunctions in the electrics, mechanics or hydraulics can cause a misalignment of the ferry jib, which in the worst case leads to the breakage of a drive side.
  • the invention is therefore based on the object to provide a lifting device, in particular a ferry dock, in which the risk of damage is reduced with minimal effort.
  • the lifting device has a platform which can be brought into a predetermined stroke position by means of a drive, for example a hydraulic cylinder.
  • a drive for example a hydraulic cylinder.
  • the drive is a safety gear assigned, which acts parallel to the hydraulic cylinders, so that even when breaking the drive reliable support is ensured.
  • the safety gear is designed with a catch rod, which via a clamping device - similar to that of the DE 38 11 225 A1 - connectable to the platform. That is, in an uneven running of the hydraulic cylinder or any other risk to the lifting device engages the clamping device, so that the platform - regardless of the drive - can be braked and fixed.
  • the clamping device has a penetrated by the catch rod clamping cylinder, are guided displaceably in the clamping body, which are hydraulically biased in a release position and can be brought into clamping engagement with the catch rod.
  • the reliability of the lifting device according to the invention can be further improved if the clamping body are accommodated in a clamping piston, which is received axially displaceably in the clamping cylinder.
  • the clamping piston is hydraulically biased into a basic position. At risk of lifting devices engages the clamping device and shifts against the hydraulic preload pressure. Over a defined braking distance, the kinetic energy of the lifting device is destroyed, without damaging the entire device.
  • This maximum pressure is preferably limited by a pressure relief valve, via which the cylinder chamber can be connected to a tank.
  • the clamping body of the clamping device are preferably biased hydraulically in its release position, wherein this biasing takes place via one or more actuating piston, which is guided in the clamping piston and the rear side is acted upon by a control pressure.
  • this setting pressure corresponds to that pressure which acts at the inlet of the pressure limiting valve.
  • the control of the clamping bodies i. the engagement of the clamping body takes place by switching over a switching valve, via which the rear side of the actuating piston can be acted upon for engagement with the tank pressure, so that the clamping body mechanically, for example by the force of a spring in its clamping position.
  • the safety gear is associated with a distance measuring system, via which the path and the speed can be detected, with which the clamping cylinder moves relative to the fishing rod. If the detected signals exceed predetermined limit values, then the safety gear is triggered, so that the clamping bodies engage and the platform is braked.
  • the pressure for the operational readiness of the safety gear is advantageously built up by means of a pump which is assigned a hydraulic accumulator in the system. This serves to avoid pressure peaks when the safety gear responds.
  • the above-described hydraulic components and / or a pressure medium tank are integrated into the housing of the Klemmyz Linders or flanged to this.
  • FIG. 1 the basic scheme of a conventional Fumbleranlegers 1 is shown.
  • This has a platform, hereinafter referred to as ramp 2, which is mounted on a dash-dotted lines indicated pivot joint 4 at a quay 6 of the ferry jetty 1.
  • ramp 2 At the end of the ramp 2 remote from the quay 2, two hydraulic cylinders 8, 10 engage, which are supported on an only indicated support frame 12.
  • the two hydraulic cylinders 8, 10 are arranged suspended, so that their piston rods 14 claimed to train are.
  • the ramp 2 can be pivoted and thus the front edge 16 can be aligned with respect to the level of a cargo space of a ferry, so that vehicles can get on the ramp 2 on the ferry.
  • the illustrated Fähranleger 1 corresponds to conventional solutions. If a fracture of one of the piston rods 14 now occurs due to a skew, the ramp 2 may crash uncontrollably or be severely damaged, at least by the torsion forces that occur.
  • the hydraulic cylinders 8, 10 associated with a safety gear 20, via which the platform 2 can be braked and supported independently of the action of the hydraulic cylinder 8, 10.
  • the safety gear 20 is formed by two interception rods 22, 24, which are supported on the bottom side and each enforce a clamping cylinder 26, 28, which can be brought into clamping engagement with the interception rods 22, 24.
  • This safety gear 20 is described below with reference to the Figures 2 and 3 explained in more detail, the catch rod 22 and the cooperating clamping cylinder 26 show.
  • the clamping cylinder 26 is connected via a connecting arm 30 by means of hinge with the ramp 2.
  • the clamping cylinder has a cylinder housing 32 which is penetrated by the fishing rod 22.
  • sliding guides and sealing means 34, 36 are arranged, via which the cylinder chamber 38 is sealed to the outside.
  • a clamping piston 40 is axially displaceably guided by the pressure in the in FIG. 2 overhead cylinder space 38 is biased in a lower stop position.
  • the clamping piston has a conical interior 42 in which a plurality of circumferentially distributed clamping body 44 are guided.
  • the conical interior 42 tapers toward the top.
  • the geometry of the clamping body 44 is correspondingly wedge-shaped (cross-section according to FIG FIG. 2 ).
  • the clamping body 44 are via engagement springs 46 in their engagement position upwards (left half in FIG.
  • the clamping bodies 44 are hydraulically brought against the force of the engagement springs 46 in a basic position in which between the inner friction surface 48 and the outer periphery of the Catching rod 22 an air gap S is present, so that no braking force is transmitted.
  • the hydraulic components for driving the clamping cylinder 26 are substantially integrated in an additional housing 52 which is fixed to the cylinder housing 32 or formed in this.
  • the interception rods 22 are arranged upright. Since the clamping cylinder 26 is fixedly connected to the platform 2, the interception rods 22 must be supported by a support bearing 53 on the quay wall or on a dike so that the clamping cylinder 26 can be moved without clamping along the catching rod 22.
  • the hydraulic components of the clamping cylinder 26 are based on the FIG. 3 explained in more detail.
  • the clamping piston 40 has a control chamber 54, via which one or more actuating piston 56 can be acted upon with pressure medium.
  • the remote from the control room 54 end portions of the actuating piston 56 protrude into the clamping body 44 receiving the interior 42 of the piston 40 and are adjacent to the adjacent smaller end face portions 58 of the clamp body 44 or on.
  • the control room 54 is connected via a channel 60 with an annular groove 62 which is formed in the inner peripheral wall of the cylinder housing 32.
  • the annular groove 62 is connected via a connecting channel 64 to a connection of an electrically actuatable switching valve 66.
  • This switching valve 66 is connected to a controller 86 of the ferry feeder 1.
  • the clamping piston 40 is sealed by suitable sealing means in the cylinder housing 32, so that the cylinder chamber 38 hydraulically from which the engagement springs 46 receiving space is separated.
  • the connecting channel 64 is connected to a pressure channel 68, which leads to a hydraulic accumulator 70.
  • the solenoid is switched off, so that the switching valve 66 is brought by the force of a compression spring in its second switching position in which the connecting channel 64 is connected to the tank.
  • the hydraulic accumulator 70 can be charged via an electrically actuated pump 76, the pressure line 78 is connected via a check valve 80 to the pressure channel 68. Via the pump 76 pressure medium is sucked from a tank T. This can be integrated into the additional housing 52.
  • the pressure in the pressure channel 68 can be limited via a pressure limiting valve 82 to a predetermined maximum pressure. When this maximum pressure is exceeded, the pressure channel 68 is connected via the pressure limiting valve 82 to the tank T.
  • FIG. 3 shows, in the cylinder housing 32, a displacement measuring system 84 is integrated, via which the position of the clamping cylinder 32 with respect to the piston rod 22 and the relative speed can be detected.
  • a displacement measuring system 84 is integrated, via which the position of the clamping cylinder 32 with respect to the piston rod 22 and the relative speed can be detected.
  • Such Absolutwegmesssystem is for example in the EP 0 618 373 B1 described, so that further explanations are unnecessary.
  • the controller 86 is arranged, in which processes the output signals of the displacement measuring system 84 and the above-described hydraulic components, in particular the switching valve 66 are driven.
  • the switching valve 66 In a normal operation of the ferry landing, for example when retracting the hydraulic cylinder 8, 10 for lifting the ramp 2, the switching valve 66 is in its in FIG. 3 illustrated basic position, so that the clamping body 44 are biased by the effective pressure in the control room 54 against the force of the engagement springs 46 in their disengaged position - the fishing rod 22 can move freely.
  • the pressure in the control room 54 is also on the line 72 and the port 74 in the cylinder chamber 38 at.
  • This biasing pressure is advantageously about as high that the maximum possible static load of the ramp (including the load thereon) can be immediately absorbed when the safety gear engages, ie this pressure is chosen so high that the clamping piston 40 in a quasi static Engagement of the safety gear remains in its illustrated lower stop position.
  • the limit pressure set at the pressure limiting valve 82 is approximately 1.1 to 1.3 times the preload pressure.
  • a displacement measuring system 84 is integrated in each of the clamping cylinders 26, 28, different position and speed signals are delivered via the two displacement measuring systems 84 of the clamping cylinder 26.
  • a control signal to the switching valve 66 so that it is switched by the force of its compression spring in the other switching position in which the connecting channel 64 is connected to the tank T. That is, the pressure in the control room 54 is reduced to the tank T out; the clamp bodies 44 can then be moved into their engagement position (left in FIG. 1) by the force of the engagement springs 46 FIG. 3 ) are shifted, so that the catch rod 22 (24) with the associated clamping cylinder 26 (28) is frictionally connected - the platform is braked and reliably held.
  • the pressure in the cylinder chamber 38 is limited via the pressure relief valve 82 to a maximum pressure. When this pressure is exceeded, the pressure medium in the cylinder chamber 38 is relaxed towards the tank.
  • the hydraulic accumulator 70 is designed with a comparatively large volume, so that pressure peaks can be damped during the deceleration process.
  • the system is designed so that the maximum braking force can be applied within about 100 milliseconds.
  • a quick reaction of the pressure relief valve 82 is required.
  • the pressure-limiting valve 82 completely opens the connection to the tank T within approximately 25 milliseconds.
  • the safety gear 20 with two interception rods 22, 24 and two clamping cylinders 26, 28 is formed.
  • the safety gear 20 with two interception rods 22, 24 and two clamping cylinders 26, 28 is formed.
  • hydraulic cylinders 8, 10 are used for pivoting the platform 2.
  • hydraulic cylinders 8, 10 are used for pivoting the platform 2.
  • other drives such as winches, spindles, etc., can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Types And Forms Of Lifts (AREA)
EP02790170A 2001-07-25 2002-07-04 Hubeinrichtung Expired - Lifetime EP1409792B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10136284 2001-07-25
DE10136284 2001-07-25
DE10163691 2001-12-21
DE10163691A DE10163691B4 (de) 2001-07-25 2001-12-21 Hubeinrichtung
PCT/EP2002/007437 WO2003010387A1 (de) 2001-07-25 2002-07-04 Hubeinrichtung

Publications (2)

Publication Number Publication Date
EP1409792A1 EP1409792A1 (de) 2004-04-21
EP1409792B1 true EP1409792B1 (de) 2010-04-07

Family

ID=26009778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02790170A Expired - Lifetime EP1409792B1 (de) 2001-07-25 2002-07-04 Hubeinrichtung

Country Status (6)

Country Link
US (1) US7509701B2 (no)
EP (1) EP1409792B1 (no)
CA (1) CA2454908C (no)
NO (1) NO333147B1 (no)
PL (1) PL366941A1 (no)
WO (1) WO2003010387A1 (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039341A1 (de) * 2009-08-29 2011-03-03 Robert Bosch Gmbh Nachführeinrichtung
US8096401B2 (en) * 2009-09-16 2012-01-17 Bae Industries, Inc. Mechanical pallet lift incorporated into an assembly line process
JP5982251B2 (ja) * 2012-10-18 2016-08-31 藤倉ゴム工業株式会社 落下防止機構を備えたエアシリンダ装置
TWM477459U (zh) * 2013-12-20 2014-05-01 zhen-xin Lin 階梯升降機

Family Cites Families (26)

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Publication number Priority date Publication date Assignee Title
US2886228A (en) * 1954-11-22 1959-05-12 William V H Susikari Gangway for ships
GB1442983A (en) 1972-07-19 1976-07-21 Arcubos Ltd Bridge for connecting two piers which are relatively variable in elevation
US4474186A (en) * 1979-07-17 1984-10-02 Georgetown University Computerized electro-oculographic (CEOG) system with feedback control of stimuli
US4531248A (en) * 1982-09-07 1985-07-30 Rite-Hite Corporation Dockboard assembly
DE3344123A1 (de) 1983-12-07 1985-06-20 Otto Wöhr GmbH, 7015 Korntal-Münchingen Vorrichtung zum abstellen von kraftfahrzeugen
DE3710109C1 (no) * 1987-03-27 1988-04-07 Kurt 3015 Wennigsen De Alten
DE3730363C1 (en) 1987-09-10 1988-12-08 Gfa Antriebstechnik Gmbh Catch device
DE3811225C2 (de) 1988-04-02 1996-07-11 Sitema Hydraulische Stützvorrichtung für Fahrzeuge
CA1261637A (en) * 1988-08-24 1989-09-26 Leonard W. Westwell Combination deck support leg holder and rub strip
DE3840096A1 (de) 1988-11-28 1990-05-31 Wiederaufarbeitung Von Kernbre Absturzsichere hubeinrichtung
US5088810A (en) * 1989-01-23 1992-02-18 Galanter Stephen M Vision training method and apparatus
DE3915304A1 (de) 1989-05-10 1990-11-15 Schwoererhaus Gmbh & Co Fangeinrichtung fuer einen aufzugskorb
US5378082A (en) * 1990-03-27 1995-01-03 Hiller; Manfred Ship lifting installation
US5176147A (en) * 1990-04-29 1993-01-05 Bodis Wollner Ivan G Method and apparatus for detecting optic neuropathy
US5206671A (en) * 1990-06-29 1993-04-27 Eydelman Malvina B Testing and treating of visual dysfunctions
US5184914A (en) * 1992-02-21 1993-02-09 Basta Samuel T Lift for watercraft
NO922502D0 (no) * 1992-06-24 1992-06-24 Vigbjorn Matre Kombinert trapp og personheis
US5377100A (en) * 1993-03-08 1994-12-27 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method of encouraging attention by correlating video game difficulty with attention level
US5440772A (en) * 1993-07-23 1995-08-15 Rite-Hite Corporation Vehicle-activated safety leg control system for a dock leveler assembly
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Also Published As

Publication number Publication date
CA2454908C (en) 2011-03-22
PL366941A1 (en) 2005-02-07
US7509701B2 (en) 2009-03-31
US20050029053A1 (en) 2005-02-10
EP1409792A1 (de) 2004-04-21
CA2454908A1 (en) 2003-02-06
WO2003010387A1 (de) 2003-02-06
NO333147B1 (no) 2013-03-18
NO20040318L (no) 2004-03-22

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