Loading implement and process for loading implement
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B66F-009/065
F15B-011/00
출원번호
US-0516148
(2006-09-06)
등록번호
US-7430953
(2008-10-07)
우선권정보
DE-10 2005 043 447(2005-09-13)
발명자
/ 주소
Bitter,Marcus
출원인 / 주소
Deere & Company
인용정보
피인용 횟수 :
2인용 특허 :
3
초록▼
A loading implement and method of operating a loading implement for the adjustment of a floating condition of a boom of the loading implement. The loading implement includes a hydraulic arrangement for the lifting and lowering of the boom, a hydraulic conveying device, a hydraulic fluid tank, a hyd
A loading implement and method of operating a loading implement for the adjustment of a floating condition of a boom of the loading implement. The loading implement includes a hydraulic arrangement for the lifting and lowering of the boom, a hydraulic conveying device, a hydraulic fluid tank, a hydraulic cylinder, a control implement connected to hydraulic supply lines for the control of the hydraulic cylinder, a first and a second hydraulic line connecting the hydraulic cylinder with the fluid tank and equipped with a first and a second selector valve, a lifting side load holding valve and a control unit for switching of the selector valves. In order to permit the activation of a floating condition without the boom being lowered uncontrollably, a sensor signals the position of the boom or the hydraulic cylinder to the control unit, which is configured to cause lowering of the boom and/or the switching into the floating condition as a function of the signal delivered by the sensor.
대표청구항▼
The invention claimed is: 1. A loading implement with hydraulic arrangement for lifting and lowering a boom, the hydraulic arrangement comprising: at least one hydraulic conveying device; a hydraulic fluid tank; a hydraulic cylinder with a lifting side hydraulic supply line and a lowering side hydr
The invention claimed is: 1. A loading implement with hydraulic arrangement for lifting and lowering a boom, the hydraulic arrangement comprising: at least one hydraulic conveying device; a hydraulic fluid tank; a hydraulic cylinder with a lifting side hydraulic supply line and a lowering side hydraulic supply line; a control implement connected to the lifting and lowering lines for the control of the hydraulic cylinder; a first hydraulic line connecting the hydraulic cylinder on the lowering side with the hydraulic fluid tank and equipped with a first selector valve; a second hydraulic line connecting the hydraulic cylinder on the lifting side with the hydraulic fluid tank or with the lowering side supply line and equipped with a second selector valve; a lifting side load holding valve arrangement and a control unit for the switching of the selector valves; a sensor adapted to signal at least one position of the boom or the hydraulic cylinder; activation devices for shifting into a floating condition for the hydraulic cylinder; and controllable control devices for the lowering of the boom, wherein the control unit is configured in such a way that the lowering of the boom and/or the shifting into the floating condition takes place as a function of the signal delivered by the sensor. 2. The loading implement according to claim 1, wherein the first hydraulic line is connected with the hydraulic fluid tank by one of directly or over the control implement. 3. The loading implement according to claim 1, wherein the controllable control devices for the lowering of the boom include a controllable pressure limiting arrangement. 4. The loading implement according to claim 3, wherein the controllable limiting arrangement is one of a throttle and a pressure limiting valve. 5. The loading implement according to claim 3, wherein the controllable pressure limiting arrangement is arranged such that when the first and second selector valves are opened a flow of hydraulic fluid can be regulated or controlled. 6. The loading implement according to claim 1, wherein the controllable control devices for the lowering of the boom include a proportionally controllable control of the control implement. 7. The loading implement according to claim 1, wherein the sensor is a one of a position sensor and an angle sensor. 8. The loading implement according to claim 1, wherein the sensor is a pressure sensor whereby at least one position of the boom or the hydraulic cylinder can be signaled as a function of the pressure. 9. The loading implement according to claim 1, wherein the activation devices are one of switches and a joystick. 10. A process for the adjustment of a floating condition of a loading implement, where the loading implement includes a hydraulic arrangement, at least one hydraulic conveying device, a hydraulic fluid tank, a hydraulic cylinder with a lifting side and a lowering side supply line, a control implement connected with the supply line, a control implement connected with the supply lines for the control of the hydraulic cylinder, a first hydraulic line connecting the hydraulic cylinder on the lowering side with the hydraulic fluid tank and equipped with a first selector valve, a second hydraulic line connecting the hydraulic cylinder on the lifting side with the hydraulic fluid tank or with the lowering side supply line and equipped with a second selector valve, a lowering side load holding valve arrangement and a control unit for the control of the selector valves, the process comprising the steps of: signaling by means of a sensor at least one position of the boom or the hydraulic cylinder, controllably bringing the boom into a lowered position as a function of a signal delivered by the sensor by means of the control unit, and after an activation by activation devices, before and thereafter switching the selector valves into a position representing a floating condition for the hydraulic cylinder. 11. The process according to claim 10 further comprising the step of moving an actuation device to initiate the floating condition. 12. The process according to claim 10, wherein the first hydraulic line is connected with the hydraulic fluid tank directly to or over the control implement. 13. The process according to claim 10, wherein the step of bringing the boom into a lowered position is performed by means of a pressure limiting arrangement that can be controlled by the control unit. 14. The process according to claim 13, wherein the pressure limiting arrangement is one of a pressure limiting valve and a throttle. 15. The process according to claim 10 further comprising the step of, when the first and the second selector valves are opened, regulating a lifting side flow of hydraulic fluid tank. 16. The process according to claim 10, wherein the step of bringing the boom into a lowered position is performed by means of a proportionally controlled control of the control implement by the control unit. 17. The process according to claim 10, wherein the sensor is one of a position sensor and an angle sensor. 18. The process according to claim 10 further comprising the step of signaling at least one position of the boom or hydraulic cylinder as a function of pressure. 19. The process according to claim 11, wherein the activation device is configured as at least one of a switch and a joystick.
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이 특허에 인용된 특허 (3)
Heinrich Dueckinghaus DE; Dirk Schlichting DE, Hydraulic piston-cylinder unit for agricultural machines.
Hughes, IV, Edward C.; Williamson, Christopher Alan; Zimmerman, Joshua D.; Ivantysynova, Monika Marianne, System and method for enabling floating of earthmoving implements.
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