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1. (WO1997016372) METHOD IN A PRESSURE MEDIUM SYSTEM FOR EMPLOYING AND CONTROLLING A LIFTING BOOM UNIT PARTICULARLY IN CONNECTION WITH A WORK MACHINE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016372 International Application No.: PCT/FI1996/000559
Publication Date: 09.05.1997 International Filing Date: 22.10.1996
Chapter 2 Demand Filed: 21.05.1997
IPC:
B66C 13/18 (2006.01) ,F15B 11/16 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
66
HOISTING; LIFTING; HAULING
C
CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
13
Other constructional features or details
18
Control systems or devices
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
16
with two or more servomotors
Applicants:
PINOMÄKI, Sakari [FI/FI]; FI
Inventors:
PINOMÄKI, Sakari; FI
Agent:
KAHILAINEN, Hannu ; Tampereen Patenttitoimisto Oy Hermiankatu 6 FIN-33720 Tampere, FI
Priority Data:
95517230.10.1995FI
Title (EN) METHOD IN A PRESSURE MEDIUM SYSTEM FOR EMPLOYING AND CONTROLLING A LIFTING BOOM UNIT PARTICULARLY IN CONNECTION WITH A WORK MACHINE
(FR) PROCEDE PERMETTANT, DANS UN SYSTEME A FLUIDE DE PRESSION, D'EMPLOYER ET DE COMMANDER UNE FLECHE DE LEVAGE, EN PARTICULIER EN COMBINAISON AVEC UN ENGIN DE CHANTIER
Abstract:
(EN) The invention relates to a method in a system using pressurized medium for employing and controlling a hoisting boom assembly particularly in combination with a working machine, the system comprising at least two cylinder-piston mechanisms (1, 2) using pressurized medium, a pressure unit (P) for pressurizing the medium, and a control unit (V) comprising two operating valves (4, 5) and using said cylinder-piston mechanisms (1, 2) by leading pressurized medium to their respective pressure chambers to be filled at a time and, in a corresponding manner, by removing pressurized medium from their respective pressure chambers to be emptied at a time. The method is applied particularly during simultaneous use of the cylinder-piston mechanisms (1, 2) by connecting the cylinder-piston mechanisms (1, 2) to operate in a series so that pressurized medium is conveyed from the pressure chamber of one cylinder-piston mechanism (1 or 2) to be emptied to the pressure chamber of the other cylinder-piston mechanism (2 or 1) to be filled up. The pressurized medium is returned to the control unit (V) from the pressure chamber of the other cylinder-piston mechanism (2 or 1) to be emptied.
(FR) Procédé employé dans un système utilisant un fluide pressurisé pour exploiter et commander un ensemble flèche de levage, notamment en combinaison avec un engin de chantier, ce système étant constitué d'au moins deux mécanismes cylindre-piston (1, 2) utilisant le fluide pressurisé, d'une unité de compression (P) permettant de pressuriser le fluide et d'une unité de commande (V) constituée de deux vannes de fonctionnement (4, 5). Les mécanismes cylindre-piston (1, 2), amènent le fluide pressurisé jusqu'à leur chambre de compression respective à remplir à un moment donné, et, inversement, évacuent le fluide pressurisé de leur chambre de compression respective à vider à un moment donné. Le procédé est appliqué notamment lors de l'utilisation simultanée des mécanismes cylindre-piston (1, 2) par le raccordement des mécanismes cylindre-piston (1, 2) afin que ceux-ci fonctionnent en série, de telle sorte que le fluide pressurisé est acheminé depuis la chambre de compression d'un mécanisme cylindre-piston (1 ou 2) pour être évacué dans la chambre de compression de l'autre mécanisme cylindre-piston (2 ou 1) à remplir. Le fluide pressurisé est renvoyé à l'unité de commande (V) à partir de la chambre de compression de l'autre mécanisme cylindre-piston (2 ou 1) à vider.
Designated States: CA, DE, FI, SE, US
Publication Language: English (EN)
Filing Language: Finnish (FI)
Also published as:
FI980558SE98012909CA2231498