JPH0356754A - Mechanical and hydraulic transmission gear and control method therefor - Google Patents

Mechanical and hydraulic transmission gear and control method therefor

Info

Publication number
JPH0356754A
JPH0356754A JP8979791A JP7979189A JPH0356754A JP H0356754 A JPH0356754 A JP H0356754A JP 8979791 A JP8979791 A JP 8979791A JP 7979189 A JP7979189 A JP 7979189A JP H0356754 A JPH0356754 A JP H0356754A
Authority
JP
Japan
Prior art keywords
transmission gear
clutch
mechanical
output shaft
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8979791A
Other languages
Japanese (ja)
Inventor
Noboru Kanayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP8979791A priority Critical patent/JPH0356754A/en
Priority to EP89906463A priority patent/EP0417283B1/en
Priority to US07/613,706 priority patent/US5193416A/en
Priority to PCT/JP1989/000547 priority patent/WO1989012188A1/en
Publication of JPH0356754A publication Critical patent/JPH0356754A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify a structure by connecting clutch of a mechanical transmission gear and disconnecting a clutch of a hydraulic transmission gear in a range where the rotating speed of an output shaft is higher than a designated value, and minimizing the absorption power of a pump.
CONSTITUTION: The power transmission of a mechanical hydraulic transmission gears is such that clutch pressure control valves 45, 46 controlled by a control portion 41 are provided to connect a clutch 51 o a mechanical transmission gear 50 fixed to an input shaft 2 and disconnect a clutch 33 of a hydraulic transmission gear 10 in a range where the rotating speed of an output shaft 35 is higher than a designated value. Further, the discharge capacity of a variable-capacity hydraulic pump 21 is minimized, and power from a power source 1 is transmitted to the output shaft 35 through the mechanical transmission gear 50 having good transmission efficiency. On the other hand, when the rotating speed of the output shaft 35 is lower than a designated value, the clutch 51 of the mechanical transmission gear 50 is disconnected, to transmit power to the output shaft 35 through the hydraulic transmission gear 10. Thus, the structure can be simplified, and the power transmission efficiency can be improved.
COPYRIGHT: (C)1991,JPO&Japio
JP8979791A 1988-05-31 1989-03-30 Mechanical and hydraulic transmission gear and control method therefor Pending JPH0356754A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8979791A JPH0356754A (en) 1989-03-30 1989-03-30 Mechanical and hydraulic transmission gear and control method therefor
EP89906463A EP0417283B1 (en) 1988-05-31 1989-05-31 Mechanical-hydraulic transmission gear and method of controlling same
US07/613,706 US5193416A (en) 1988-05-31 1989-05-31 Mechanical-hydraulic transmission gear system and method of controlling power transmission using the system
PCT/JP1989/000547 WO1989012188A1 (en) 1988-05-31 1989-05-31 Mechanical-hydraulic transmission gear and method of controlling same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8979791A JPH0356754A (en) 1989-03-30 1989-03-30 Mechanical and hydraulic transmission gear and control method therefor

Publications (1)

Publication Number Publication Date
JPH0356754A true JPH0356754A (en) 1991-03-12

Family

ID=13700038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8979791A Pending JPH0356754A (en) 1988-05-31 1989-03-30 Mechanical and hydraulic transmission gear and control method therefor

Country Status (1)

Country Link
JP (1) JPH0356754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0533861A (en) * 1991-07-29 1993-02-09 Komatsu Ltd Speed change control device for hydrostatic-mechanical transmitting machine
US5809846A (en) * 1994-03-31 1998-09-22 Komatsu Ltd. Method of power transmission in mechanical/hydraulic type transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0533861A (en) * 1991-07-29 1993-02-09 Komatsu Ltd Speed change control device for hydrostatic-mechanical transmitting machine
US5809846A (en) * 1994-03-31 1998-09-22 Komatsu Ltd. Method of power transmission in mechanical/hydraulic type transmission system

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