EP0798261A3 - Safety device for lifting trucks - Google Patents

Safety device for lifting trucks Download PDF

Info

Publication number
EP0798261A3
EP0798261A3 EP97850048A EP97850048A EP0798261A3 EP 0798261 A3 EP0798261 A3 EP 0798261A3 EP 97850048 A EP97850048 A EP 97850048A EP 97850048 A EP97850048 A EP 97850048A EP 0798261 A3 EP0798261 A3 EP 0798261A3
Authority
EP
European Patent Office
Prior art keywords
weight
current
values
order
safety 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.)
Granted
Application number
EP97850048A
Other languages
German (de)
French (fr)
Other versions
EP0798261B1 (en
EP0798261A2 (en
Inventor
Lars Eriksson
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.)
BT Industries AB
Original Assignee
BT Industries AB
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 BT Industries AB filed Critical BT Industries AB
Publication of EP0798261A2 publication Critical patent/EP0798261A2/en
Publication of EP0798261A3 publication Critical patent/EP0798261A3/en
Application granted granted Critical
Publication of EP0798261B1 publication Critical patent/EP0798261B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, 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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks

Abstract

In order to increase security at lifting work with in particular high lifting trucks the inventions suggest the use of a weight indication for the driver so that he know how heavy loads he is handling. This weight indication is obtained by measuring the current to the motor of the hydraulic pump. In order to eliminate the risk that momentary variations result in a faulty measurement preferably a mean value of the current is taken for a certain time or this is added during a fixed time interval. Obtained values are them multiplied with a conversion factor so that the weight in for instance kilograms is obtained and delivered to a suitable presentation device. Obtained values may also be used for alarm with suitable sound or light signals if the load should exceed the maximum allowed values.
EP97850048A 1996-03-28 1997-03-26 Safety device for lifting trucks Expired - Lifetime EP0798261B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9601185 1996-03-28
SE9601185A SE505605C2 (en) 1996-03-28 1996-03-28 Method and apparatus for indicating the weight of the lifted load for lift trucks

Publications (3)

Publication Number Publication Date
EP0798261A2 EP0798261A2 (en) 1997-10-01
EP0798261A3 true EP0798261A3 (en) 1998-12-23
EP0798261B1 EP0798261B1 (en) 2003-02-26

Family

ID=20401979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97850048A Expired - Lifetime EP0798261B1 (en) 1996-03-28 1997-03-26 Safety device for lifting trucks

Country Status (3)

Country Link
EP (1) EP0798261B1 (en)
DE (1) DE69719232T2 (en)
SE (1) SE505605C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE455671T1 (en) 2005-09-20 2010-02-15 Atlet Ab IMPROVED CONTROL SYSTEM FOR A INDUSTRIAL HANDLING VEHICLE

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758830A (en) * 1945-11-19 1956-08-14 Bentley Desmond Mulock Weighing the output of lifting and lowering machines
US4053742A (en) * 1976-12-20 1977-10-11 Youngstown Sheet And Tube Company Energy measuring systems adapted for use in conjunction with load moving and weight indicating devices
EP0236804A1 (en) * 1986-03-05 1987-09-16 Feldmühle Aktiengesellschaft Method of signalling load and overload
DE4207072A1 (en) * 1992-03-06 1993-09-09 Heidelberger Druckmasch Ag METHOD AND DEVICE FOR DETERMINING THE WEIGHT OF A MOVABLE OBJECT
US5393939A (en) * 1992-11-20 1995-02-28 Westinghouse Electric Corp. Apparatus and method for weighing moving objects
DE19511591A1 (en) * 1995-03-29 1996-10-17 Jungheinrich Ag Determining load of forklift truck and stacking vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758830A (en) * 1945-11-19 1956-08-14 Bentley Desmond Mulock Weighing the output of lifting and lowering machines
US4053742A (en) * 1976-12-20 1977-10-11 Youngstown Sheet And Tube Company Energy measuring systems adapted for use in conjunction with load moving and weight indicating devices
EP0236804A1 (en) * 1986-03-05 1987-09-16 Feldmühle Aktiengesellschaft Method of signalling load and overload
DE4207072A1 (en) * 1992-03-06 1993-09-09 Heidelberger Druckmasch Ag METHOD AND DEVICE FOR DETERMINING THE WEIGHT OF A MOVABLE OBJECT
US5393939A (en) * 1992-11-20 1995-02-28 Westinghouse Electric Corp. Apparatus and method for weighing moving objects
DE19511591A1 (en) * 1995-03-29 1996-10-17 Jungheinrich Ag Determining load of forklift truck and stacking vehicle

Also Published As

Publication number Publication date
EP0798261B1 (en) 2003-02-26
SE9601185D0 (en) 1996-03-28
EP0798261A2 (en) 1997-10-01
SE9601185L (en) 1997-09-22
DE69719232T2 (en) 2003-12-11
DE69719232D1 (en) 2003-04-03
SE505605C2 (en) 1997-09-22

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