IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0477995
(2002-05-08)
|
우선권정보 |
SE-0101839(2001-05-22) |
국제출원번호 |
PCT/SE02/000880
(2002-05-08)
|
§371/§102 date |
20031117
(20031117)
|
국제공개번호 |
WO02/095243
(2002-11-28)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Pillsbury Winthrop Shaw Pittman LLP
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
4 |
초록
▼
The present invention relates to a mobile handling arrangement with hydraulic circuit, forming part of which hydraulic part of which hydraulic circuit (L) is a lifting cylinder (1) arranged in a lifting arrangement (100) made for handling a variable load together with an accumulator arrangement (6)
The present invention relates to a mobile handling arrangement with hydraulic circuit, forming part of which hydraulic part of which hydraulic circuit (L) is a 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, 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), characterized in that the hydraulic circuit (L) comprises a temperature sensor (95) in connection with a gaseous phase part (68B) 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 in the said accumulator arrangement (6) is adjusted as a function of the temperature in the said gaseous phase part (68B).
대표청구항
▼
What is claimed is: 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 r
What is claimed is: 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 (68B) 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). 2. Mobile handing arrangement according to claim 1, characterised in that the said accumulator arrangement (6) comprises at least two vessels (68, 66A), one of the said vessels (66A) being connected solely to the gaseous phase part ( 68B). 3. Mobile handing arrangement according to claim 2, characterised in that the said further vessel (66A) comprises a standard container for top-up gas, the maximum pressure level for the said vessel exceeding 200 bar. 4. Mobile handing arrangement according to claim 2, characterised by a shut-off element (67) in a line between the said two vessels (68, 66A). 5. Mobile handing arrangement according to claim 2, characterised by a connection (64A) in order to permit the connection of a top-up cylinder (69) to the gaseous phase part ( 68B). 6. Mobile handing arrangement according to claim 1, characterised by at least one pressure sensor (91), which detects the pressure in the said accumulator arrangement (6). 7. Mobile handling arrangement with hydraulic circuit, which hydraulic circuit (L) comprises 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, and 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 temperature in a gaseous phase part (68 B) of the accumulator (6) is registered by means of a temperature sensor (95), that the said registered temperature level is processed by a feedback and control unit (94), which actuates the hydraulic pump (71) in order to fill the accumulator (6) with a charging pressure that varies as a function of the registered temperature. 8. Mobile handing arrangement according to claim 7, characterised in that the pressure inside the gaseous phase part ( 68B) is registered by means of a pressure sensor (91), and with the accumulator arrangement (6) filled is set by the feedback and control unit (94) so that it is 5-20% greater than the maximum hydraulic pressure of the hydraulic circuit (L). 9. Mobile handing arrangement according to claim 7, characterised in that at least one further vessel (66A) is arranged in connection with the gaseous phase part (68B) in a main accumulator of the said accumulator arrangement (6). 10. Mobile handing arrangement according to claim 9, characterised in that the connection between the said gas cylinder ( 66A) and the said main accumulator (68) is designed with a shut-off element (67), and that the main accumulator (68) is designed with a connection (64A), by way of which a top-up cylinder (69) is connected up and that the said accumulator ( 6) is topped up with gas from the said gas cylinder (69) by first filling the gaseous part (68B) in the main accumulator ( 68) with gas from the gas cylinder (69), with the shut-off element (67) closed, and then opening the shut-off element ( 67) and using the hydraulic pump (71) to force the quantity of gas inside the main accumulator (68) into the said gas cylinder (66A), and repeating the said process in order to obtain the desired quantity of gas inside the accumulator arrangement (6).
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