IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0814001
(2001-03-22)
|
우선권정보 |
JP-0085447 (2000-03-24) |
발명자
/ 주소 |
- Ikari, Masanori
- Matsuyama, Nobuo
|
출원인 / 주소 |
|
대리인 / 주소 |
Armstrong, Westerman & Hattori, LLP.
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
2 |
초록
▼
An apparatus for controlling a plurality of hydraulic motors and a clutch is capable of reliably implementing a sequence for engaging and disengaging the clutch and for fixing and clearing a zero tilt rotation amounts of the hydraulic motors, thereby preventing a speed change shock or load slip in t
An apparatus for controlling a plurality of hydraulic motors and a clutch is capable of reliably implementing a sequence for engaging and disengaging the clutch and for fixing and clearing a zero tilt rotation amounts of the hydraulic motors, thereby preventing a speed change shock or load slip in the hydraulic motors. The apparatus includes zero tilt rotation fixing means (10A), a clutch (5), hydraulic vehicle speed detecting means (32A), and control valve means (30A) that releases an output command pressure to a return pressure connected to a tank (19) until a vehicle speed signal pressure to be received reaches a start pressure of a predetermined value, and begins to output the command pressure to the zero tilt rotation fixing means and the clutch when the vehicle speed signal pressure exceeds a predetermined value.
대표청구항
▼
1. An apparatus for controlling a plurality of hydraulic motors and a clutch in which a single driving shaft is driven by outputs of a plurality of hydraulic motors, and one of the plurality of hydraulic motors drives the driving shaft through the clutch, comprising: zero tilt rotation fixing mea
1. An apparatus for controlling a plurality of hydraulic motors and a clutch in which a single driving shaft is driven by outputs of a plurality of hydraulic motors, and one of the plurality of hydraulic motors drives the driving shaft through the clutch, comprising: zero tilt rotation fixing means for fixing the tilt rotation amount of a first hydraulic motor to zero when a zero fixing pressure, Pcs=Pf, of a predetermined value is input; a clutch that is disengaged when a release pressure, Pk, of a predetermined value that is larger than the zero fixing pressure, Pf, is input; hydraulic vehicle speed detecting means for detecting a vehicle speed by a vehicle speed signal pressure, Pv, based on a vehicle speed; and control valve means that releases an output command pressure, Pcs, to a return pressure, Pt, connected to a tank until a vehicle speed signal pressure, Pv, received from the hydraulic vehicle speed detecting means reaches a start pressure, Pb, of a predetermined value, and begins to output the commend pressure, Pcs, to a zero tilt rotation fixing means and the clutch when the vehicle speed signal pressure, Pv, exceeds a predetermined value. 2. An apparatus for controlling a plurality of hydraulic motors and a clutch in which a single driving shaft is driven by outputs of a plurality of hydraulic motors, and one of the plurality of hydraulic motors drives the driving shaft through the clutch, comprising: zero tilt rotation fixing means for fixing the tilt rotation amount of a first hydraulic motor to zero when a zero fixing pressure, Pcs=Pf, of a predetermined value is input; a clutch that is disengaged when a release pressure, Pk, of a predetermined value that is larger than the zero fixing pressure, Pf, is input; hydraulic vehicle speed detecting means for detecting a vehicle speed by a vehicle speed signal pressure, Pv, based on a vehicle speed; and control valve means that outputs an output command pressure, Pcs, to a zero tilt rotation fixing means and the clutch when the vehicle speed signal pressure, Pv, received from the hydraulic vehicle speed detecting means is larger than a predetermined value, Pb, while it begins to release the command pressure, Pcs, to a return pressure, Pt, connected to a tank when the vehicle speed signal pressure, Pv, becomes smaller than the predetermined value, Pb.
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