IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0933982
(2009-03-05)
|
등록번호 |
US-8701397
(2014-04-22)
|
우선권정보 |
JP-2008-078236 (2008-03-25) |
국제출원번호 |
PCT/JP2009/054214
(2009-03-05)
|
§371/§102 date |
20100922
(20100922)
|
국제공개번호 |
WO2009/119277
(2009-10-01)
|
발명자
/ 주소 |
- Tanaka, Satoshi
- Mizoguchi, Norihide
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
12 |
초록
▼
A hydraulic oil supply device includes: a work equipment pump that supplies a hydraulic oil to a hydraulic actuator that drives a work equipment; a fan pump that supplies the hydraulic oil to a hydraulic motor that drives a cooling fan; and a circuit switching valve provided on a hydraulic circuit b
A hydraulic oil supply device includes: a work equipment pump that supplies a hydraulic oil to a hydraulic actuator that drives a work equipment; a fan pump that supplies the hydraulic oil to a hydraulic motor that drives a cooling fan; and a circuit switching valve provided on a hydraulic circuit being branched from a hydraulic circuit connecting the hydraulic actuator with the work equipment pump to be connected to the fan pump, the circuit switching valve selectively connecting a discharge portion of the fan pump to the hydraulic actuator and the hydraulic motor.
대표청구항
▼
1. A hydraulic oil supply device installed in a construction machine to supply hydraulic oil, the hydraulic oil supply device comprising: a work equipment pump that supplies the hydraulic oil to a hydraulic actuator that drives the work equipment;a fan pump that supplies the hydraulic oil to one of
1. A hydraulic oil supply device installed in a construction machine to supply hydraulic oil, the hydraulic oil supply device comprising: a work equipment pump that supplies the hydraulic oil to a hydraulic actuator that drives the work equipment;a fan pump that supplies the hydraulic oil to one of the hydraulic actuator and a hydraulic motor that drives a cooling fan;a control valve that controls a supply of the hydraulic oil from the work equipment pump to the hydraulic actuator;a circuit switching valve that selectively connects a discharge portion of the fan pump to the hydraulic actuator and the hydraulic motor;a control body for operating a movement of the control valve, the control body being configured to generate an operation signal output based upon being operated by a user to control the work equipment;a movement position detector for detecting a movement position of the work equipment, the movement position detector being configured to output a detection signal based upon detecting the movement position of the work equipment; anda controller configured to receive the operation signal output from the control body and the detection signal from the movement position detector and configured to switch the circuit switching valve based on the operation signal output and the detection signal, wherein based on receiving the operation signal output and the detection signal, the controller switches the circuit switching valve, and the hydraulic actuator receives hydraulic oil discharged from the fan pump in addition to receiving hydraulic oil discharged from the work equipment pump. 2. The hydraulic oil supply device according to claim 1, wherein the controller switches the circuit switching valve after minimizing a pump displacement of the fan pump. 3. The hydraulic oil supply device according to claim 1, further comprising a temperature sensor that detects at least one of temperatures of the hydraulic oil and a cooling water,wherein the controller prohibits switching of the circuit switching valve based on a detection signal of the temperature sensor and the detection signal of the movement position detector. 4. The hydraulic oil supply device according to claim 2, further comprising a temperature sensor that detects at least one of temperatures of the hydraulic oil and a cooling water,wherein the controller prohibits switching of the circuit switching valve based on a detection signal of the temperature sensor and the detection signal of the movement position detector. 5. The hydraulic oil supply device according to claim 1, further comprising an accelerator pedal angle sensor that detects an accelerator pedal angle for operating an output of an engine,wherein the controller switches the circuit switching valve based on the operation signal of the control body, the detection signal of the movement position detector, and a detection signal of the accelerator pedal angle sensor. 6. The hydraulic oil supply device according to claim 1, further comprising an engine speed sensor that detects an engine speed, whereinthe controller switches the circuit switching valve based on the operation signal of the control body, the detection signal of the movement position detector, and a detection signal of the engine speed sensor. 7. The hydraulic oil supply device according to claim 1, wherein the movement position detector includes means for detecting the movement position of the work equipment. 8. A construction machine comprising: a hydraulic actuator that drives a work equipment of the construction machine;a hydraulic motor that drives a cooling fan; anda hydraulic oil supply device installed in the construction machine to supply hydraulic oil, the hydraulic oil supply device comprising: a work equipment pump that supplies the hydraulic oil to the hydraulic actuator that drives the work equipment;a fan pump that supplies the hydraulic oil to one of the hydraulic actuator and the hydraulic motor that drives the cooling fan;a control valve that controls a supply of the hydraulic oil from the work equipment pump to the hydraulic actuator;a circuit switching valve that selectively connects a discharge portion of the fan pump to the hydraulic actuator and the hydraulic motor;a control body for operating a movement of the control valve, the control body being configured to generate an operation signal output based upon being operated by a user to control the work equipment;a movement position detector for detecting a movement position of the work equipment, the movement position detector being configured to output a detection signal based upon detecting the movement position of the work equipment; anda controller configured to receive the operation signal output from the control body and the detection signal from the movement position detector and configured to switch the circuit switching valve based on the operation signal output and the detection signal, wherein based on receiving the operation signal output and the detection signal, the controller switches the circuit switching valve, and the hydraulic actuator receives hydraulic oil discharged from the fan pump in addition to receiving hydraulic oil discharged from the work equipment pump. 9. The construction machine according to claim 8, wherein the hydraulic oil supply device further includes: an accelerator pedal angle sensor that detects an accelerator pedal angle for operating an output of an engine,wherein the controller switches the circuit switching valve based on the operation signal of the control body, the detection signal of the movement position detector, and a detection signal of the accelerator pedal angle sensor. 10. The construction machine according to claim 8, wherein the hydraulic oil supply device further includes: an engine speed sensor that detects an engine speed, whereinthe controller switches the circuit switching valve based on the operation signal of the control body, the detection signal of the movement position detector, and a detection signal of the engine speed sensor. 11. The construction machine according to claim 8, wherein the movement position detector includes means for detecting the movement position of the work equipment. 12. A hydraulic oil supply device installed in a construction machine to supply hydraulic oil, the hydraulic oil supply device comprising: a work equipment pump that supplies the hydraulic oil to a hydraulic actuator that drives the work equipment;a fan pump that supplies the hydraulic oil to one of the hydraulic actuator and a hydraulic motor that drives a cooling fan;a control valve that controls a supply of the hydraulic oil from the work equipment pump to the hydraulic actuator;a circuit switching means for selectively connecting a discharge portion of the fan pump to the hydraulic actuator and the hydraulic motor;a control body for operating a movement of the control valve, the control body being configured to generate an operation signal output based upon being operated by a user to control the work equipment;a movement position detector for detecting a movement position of the work equipment, the movement position detector being configured to output a detection signal based upon detecting the movement position of the work equipment; anda controller configured to receive the operation signal output from the control body and the detection signal from the movement position detector and configured to switch the circuit switching means based on the operation signal output and the detection signal, wherein based on receiving the operation signal output and the detection signal, the controller switches the circuit switching means, and the hydraulic actuator receives hydraulic oil discharged from the fan pump in addition to receiving hydraulic oil discharged from the work equipment pump. 13. The hydraulic oil supply device according to claim 12, wherein the controller switches the circuit switching means after minimizing a pump displacement of the fan pump. 14. The hydraulic oil supply device according to claim 13, further comprising a temperature sensor that detects at least one of temperatures of the hydraulic oil and a cooling water,wherein the controller prohibits switching of the circuit switching means based on a detection signal of the temperature sensor and the detection signal of the movement position detector. 15. The hydraulic oil supply device according to claim 12, further comprising a temperature sensor that detects at least one of temperatures of the hydraulic oil and a cooling water,wherein the controller prohibits switching of the circuit switching means based on a detection signal of the temperature sensor and the detection signal of the movement position detector. 16. The hydraulic oil supply device according to claim 12, further comprising an accelerator pedal angle sensor that detects an accelerator pedal angle for operating an output of an engine,wherein the controller switches the circuit switching means based on the operation signal of the control body, the detection signal of the movement position detector, and a detection signal of the accelerator pedal angle sensor. 17. The hydraulic oil supply device according to claim 12, further comprising an engine speed sensor that detects an engine speed, whereinthe controller switches the circuit switching means based on the operation signal of the control body, the detection signal of the movement position detector, and a detection signal of the engine speed sensor. 18. The hydraulic oil supply device according to claim 12, wherein the movement position detector includes means for detecting the movement position of the work equipment.
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