EP1632453A3 - Device for emergency lowering of a load support on a fork lift - Google Patents

Device for emergency lowering of a load support on a fork lift Download PDF

Info

Publication number
EP1632453A3
EP1632453A3 EP05016958A EP05016958A EP1632453A3 EP 1632453 A3 EP1632453 A3 EP 1632453A3 EP 05016958 A EP05016958 A EP 05016958A EP 05016958 A EP05016958 A EP 05016958A EP 1632453 A3 EP1632453 A3 EP 1632453A3
Authority
EP
European Patent Office
Prior art keywords
bypass
valve block
load support
emergency lowering
fork lift
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.)
Granted
Application number
EP05016958A
Other languages
German (de)
French (fr)
Other versions
EP1632453B1 (en
EP1632453A2 (en
Inventor
Thomas Dipl.-Ing. Stolten
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.)
Jungheinrich AG
Original Assignee
Jungheinrich 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
Priority to DE200410042881 priority Critical patent/DE102004042881A1/en
Application filed by Jungheinrich AG filed Critical Jungheinrich AG
Publication of EP1632453A2 publication Critical patent/EP1632453A2/en
Publication of EP1632453A3 publication Critical patent/EP1632453A3/en
Application granted granted Critical
Publication of EP1632453B1 publication Critical patent/EP1632453B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/20Means for actuating or controlling masts, platforms, or forks
    • B66F9/22Hydraulic devices or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/002Electrical failure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004Fluid pressure supply failure

Abstract

Device for the emergency lowering of a load-bearing means in a forklift, in particular reach trucks, with a valve arrangement accommodated in a valve block (22), by means of which the inflow and outflow of a hydraulic means to and from a lifting cylinder (10) for the load support means is controlled by a bypass (42 ) between the lifting cylinder and a tank (28), a blocking element (50) in the bypass and a cable (52) containing operable by an operator actuating device (58) through which the blocking element can be brought into the open position, wherein the bypass of a Bypass branch is formed in the valve block, a screw-shaped locking element is screwed with an externally threaded portion in a threaded bore of the valve block and shuts off the bypass branch in the fully screwed position, a torque transmitting cable with one end rotatably connected to the locking element and the other hand, a handle for rotation of Rope is appropriate.
EP20050016958 2004-09-04 2005-08-04 Device for emergency lowering of a load support on a fork lift Active EP1632453B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410042881 DE102004042881A1 (en) 2004-09-04 2004-09-04 Device for emergency lowering of a load-bearing means in a forklift

Publications (3)

Publication Number Publication Date
EP1632453A2 EP1632453A2 (en) 2006-03-08
EP1632453A3 true EP1632453A3 (en) 2008-01-16
EP1632453B1 EP1632453B1 (en) 2010-07-21

Family

ID=35457795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050016958 Active EP1632453B1 (en) 2004-09-04 2005-08-04 Device for emergency lowering of a load support on a fork lift

Country Status (4)

Country Link
US (1) US7562616B2 (en)
EP (1) EP1632453B1 (en)
CN (1) CN100439231C (en)
DE (2) DE102004042881A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9902559B2 (en) * 2014-02-17 2018-02-27 The Curotto-Can, Llc Scale based load limiting mechanism for refuse vehicles with an intermediate container
US10183852B2 (en) 2015-07-30 2019-01-22 Danfoss Power Solutions Gmbh & Co Ohg Load dependent electronic valve actuator regulation and pressure compensation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598361A (en) * 1969-06-02 1971-08-10 Raymond W Crowe Apparatus for remotely operating drain valves
DE3120890A1 (en) * 1981-05-26 1983-01-05 Magenwirth Gmbh Co Gustav Remote control system for valves
DE19916056A1 (en) * 1998-04-10 1999-11-11 Toyoda Automatic Loom Works Oil pressure controller used in commercial vehicle e.g. fork lift truck
EP1046610A2 (en) * 1999-04-20 2000-10-25 BT Industries Aktiebolag Device and method for movement of a load carrier at an industrial truck
US20010006019A1 (en) * 1998-02-04 2001-07-05 Linde Aktiengesellschaft Control valve system for the hydraulic work system of a work vehicle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623698A (en) * 1970-01-30 1971-11-30 Ez Serve Inc Remote controlled oil and liquid drain valve
US4630629A (en) * 1986-03-07 1986-12-23 General Screw Products Company Valve with compressible valve stem and valve body seals
CN2058178U (en) * 1989-04-29 1990-06-13 彭昌宗 Static-hydraulic driving and eontrol system for fork lift truck
US5065983A (en) * 1990-04-03 1991-11-19 Safe-T-Jack, Inc. Hydraulic power unit for jack system
US5577876A (en) * 1994-02-22 1996-11-26 Clark Equipment Company Hydraulic interblock system
CN2218734Y (en) * 1994-11-04 1996-01-31 洪茂雄 Hydraulic jack with handle reset and stopper
US5975496A (en) * 1998-05-29 1999-11-02 Norco Industries, Inc. Multiple pump transmission jack
US6086047A (en) * 1999-07-07 2000-07-11 Lee; Steven Hydraulic jack
DE20208577U1 (en) * 2002-06-03 2003-12-11 Hawe Hydraulik Gmbh & Co. Kg Electro-hydraulic lift control device for industrial trucks
US6991216B1 (en) * 2003-06-12 2006-01-31 Inferno Manufacturing Corporation Valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598361A (en) * 1969-06-02 1971-08-10 Raymond W Crowe Apparatus for remotely operating drain valves
DE3120890A1 (en) * 1981-05-26 1983-01-05 Magenwirth Gmbh Co Gustav Remote control system for valves
US20010006019A1 (en) * 1998-02-04 2001-07-05 Linde Aktiengesellschaft Control valve system for the hydraulic work system of a work vehicle
DE19916056A1 (en) * 1998-04-10 1999-11-11 Toyoda Automatic Loom Works Oil pressure controller used in commercial vehicle e.g. fork lift truck
EP1046610A2 (en) * 1999-04-20 2000-10-25 BT Industries Aktiebolag Device and method for movement of a load carrier at an industrial truck

Also Published As

Publication number Publication date
CN1746102A (en) 2006-03-15
EP1632453A2 (en) 2006-03-08
CN100439231C (en) 2008-12-03
DE502005009936D1 (en) 2010-09-02
DE102004042881A1 (en) 2006-03-09
EP1632453B1 (en) 2010-07-21
US7562616B2 (en) 2009-07-21
US20060049688A1 (en) 2006-03-09

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