Patent ID: 6983592
Filing Date: 2006-01-10
Classification: F15B

Abstract:
1. Mobile handling arrangement with hydraulic circuit, forming part of which hydraulic circuit (L) is a double-acting lifting cylinder ( 1 ) arranged in a lifting arrangement ( 100 ) made for handling a variable load together with an accumulator arrangement ( 6 ) for recovering and reusing the lowered load energy, together with a hydraulic pump ( 71 ) for topping up the said accumulator arrangement ( 6 ) with oil, the hydraulic circuit also comprising a variable hydraulic machine ( 3 ) having two ports, ( 10 , 11 ), the said hydraulic machine being capable, by way of a drive unit (D), of delivering full system pressure in two directions of flow to the said ports, one port ( 11 ) being connected to the said accumulator arrangement ( 6 ) and the other port being connected to the said lifting cylinder ( 1 ), characterised in that the hydraulic circuit (L) comprises a temperature sensor ( 95 ) in connection with a gaseous phase part ( 68 B) of the said accumulator arrangement ( 6 ) and a control and feedback unit ( 94 ) in communication with the said temperature sensor ( 95 ), by means of which the filling level of gas in the said accumulator arrangement ( 6 ) is adjusted as a function of the temperature in the said gaseous phase part ( 68 B).