Hydraulic loading shovels
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IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0408017
(1982-08-13)
|
우선권정보 |
FR-0020658 (1976-07-06) |
발명자
/ 주소 |
- Morizur Jean Y. H. (Compiegne FRX) Yeou Victor (Meau FRX)
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출원인 / 주소 |
- Poclain (Le Plesses Belleville FRX 03)
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인용정보 |
피인용 횟수 :
8 인용 특허 :
1 |
초록
▼
The present invention relates to a device for controlling two fluid-controlled drive members, one of which is double-acting, wherein a communication conduit connects the supply conduits of said double-acting drive member, a non-return valve being disposed in said communication conduit and allowing t
The present invention relates to a device for controlling two fluid-controlled drive members, one of which is double-acting, wherein a communication conduit connects the supply conduits of said double-acting drive member, a non-return valve being disposed in said communication conduit and allowing the passage of the fluid solely from the small chamber towards the large chamber of said double-acting drive member, while another conduit is adapted to connect the large chamber of the double-acting drive member to the chamber of the second drive member. The result of the invention is the elimination of lift of a hydraulic loading shovel when digging.
대표청구항
▼
A device for controlling at least first and second fluid-controlled drive members wherein the first drive member is double-acting and has separate small and large chambers of unequal useful sections, including: first and second main distributors respectively associated with said first and second dri
A device for controlling at least first and second fluid-controlled drive members wherein the first drive member is double-acting and has separate small and large chambers of unequal useful sections, including: first and second main distributors respectively associated with said first and second drive members, first and second supply conduits each respectively connecting one of said small and large chambers of the first drive member to the first main distributor, at least one main source of pressurized fluid, a plurality of conduits connecting said main source to each distributor, said first distributor being movable to first, second, and third positions, in which in said first position the small chamber of the first drive member communicates with the main source associated therewith, in the second position the two chambers of said first drive member are isolated, and in the third position the large chamber communicates with said main source, said second drive member having at least one chamber, a supply conduit connecting said one chamber to the second main distributor, said second main distributor being movable to at least first and second positions respectively placing said chamber of the second drive member in communication with said main source and isolating that chamber from said main source, a communication conduit connecting the first and second supply conduits of the first drive member and non-return valve means disposed in said communication conduit for allowing the passage through the communication conduit of fluid only from the small chamber towards the large chamber of this first drive member in response to extremely low pressure differentials, and preventing passage of fluid from the large chamber towards the small chamber of the first drive member through the communication conduit, a two-position selector disposed in said communication conduit and which, in a first position ensures the continuity of this communication conduit, and in a second position obturates said communication conduit to flow of fluid in either direction therein, and a two-way distributor disposed in the supply conduit of the large chamber of the first drive member and connected, via a by-pass conduit to the supply conduit of said chamber of the second drive member, said two-way distributor being movable between first and second positions and interrupting, in its first position, said supply conduit of the large chamber of the first drive member, placing that part of the supply conduit connected to said large chamber in communication with the by-pass conduit and ensuring, in its second position, the continuity of the supply conduit of the large chamber of the first drive member; said two-way distributor including means for adjusting its position combined with means for adjusting the position of the first and second main distributors, whereby, when the first and second main distributors are placed in their first position, or in their second position, the two-way distributor is correspondingly placed in its first or in its second position, respectively.
이 특허에 인용된 특허 (1)
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Schexnayder Lawrence F. (Joliet IL), Hydraulic circuit.
이 특허를 인용한 특허 (8)
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Mauch,Adam R.; Shelbourn,William C.; St. Aubin,Joseph A.; Brock,Knute K.; Kaczmarski,Wally L., Fluid circuit with multiple flows from a series valve.
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Kondo Masami,JPX, Hydraulic circuit for turning excavator.
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Gage Douglas M. (Dubuque IA) Neagle Stuart L. (Dubuque IA), Hydraulic system for a work vehicle.
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Gage Douglas M. (Dubuque IA) Neagle Stuart L. (Dubuque IA), Hydraulic system for a work vehicle.
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Hartiala Eero (Kangasala FIX) Kuusento Jaakko (Tampere FIX) Paasonen Hannu (Nokia FIX), Method of and device for adjusting the feed movement of a drill rod for drilling a rock.
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Duppong Gerald J. ; Brock Knute K. ; Sagaser Thomas M., Multifunction valve stack.
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Link,Todd Allen; Harber,Neil Vincent, Series hydraulic circuit for controlling operation of multiple cutting decks of a tractor.
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Duppong Gerald J. ; Brock Knute K. ; Sagaser Thomas M., Valve stack in a mini-excavator directing fluid under pressure from multiple pumps to actuable elements.
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