JPS5779352A - Control valve for speed change clutch - Google Patents

Control valve for speed change clutch

Info

Publication number
JPS5779352A
JPS5779352A JP15624780A JP15624780A JPS5779352A JP S5779352 A JPS5779352 A JP S5779352A JP 15624780 A JP15624780 A JP 15624780A JP 15624780 A JP15624780 A JP 15624780A JP S5779352 A JPS5779352 A JP S5779352A
Authority
JP
Japan
Prior art keywords
speed change
control valve
ports
oil
firstwthird
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
JP15624780A
Other languages
Japanese (ja)
Inventor
Mikio Umeda
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP15624780A priority Critical patent/JPS5779352A/en
Publication of JPS5779352A publication Critical patent/JPS5779352A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

PURPOSE: To reduce the number of pressurized oil supply ports in a forward/ reverse six step power shift speed change gear, by performing the feed and exhaust of oil through a central oil path in two parallel spools while enabling the parallel arrangement of each connecting port in the speed change clutch.
CONSTITUTION: A power shift speed change gear having six steps for forward and reverse provided in such as a wheel loader is equipped with a speed change clutch control valve 1 wher the first and second spools 5, 6 are arranged in parallel. Said control valve 1 is equipped with the connecting ports 8, 9 for the first and second sub speed change clutches 57, 58 and a connecting port 19 for the first and second directional exchange clutches 55, 56. Here the fourthW sixth connecting ports 21W23 for the firstWthird main speed change clutches 51W53 are formed in the second spool hole 4 while the firstWthird connecting ports 10W12 for conducting through firstWthird oil paths 26W28 to said ports 21W23 are formed in the first spool hole 3. Furthermore fourth-seventh oil paths 34W37, eighthWtenth oil paths 42W44 are formed in each spools 5, 6.
COPYRIGHT: (C)1982,JPO&Japio
JP15624780A 1980-11-06 1980-11-06 Control valve for speed change clutch Pending JPS5779352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15624780A JPS5779352A (en) 1980-11-06 1980-11-06 Control valve for speed change clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15624780A JPS5779352A (en) 1980-11-06 1980-11-06 Control valve for speed change clutch

Publications (1)

Publication Number Publication Date
JPS5779352A true JPS5779352A (en) 1982-05-18

Family

ID=15623591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15624780A Pending JPS5779352A (en) 1980-11-06 1980-11-06 Control valve for speed change clutch

Country Status (1)

Country Link
JP (1) JPS5779352A (en)

Similar Documents

Publication Publication Date Title
CA1143966A (en) Multi-speed change-speed-gear changeable under load
JPS57949A (en) Servo-valve
US4555964A (en) Hydraulic control system for automatic transmission with shockless 4-3 shifting as well as shockless 2-3 shifting
JPS5631554A (en) Lock-up clutch controller of torque converter in automatic transmission
JPS5779352A (en) Control valve for speed change clutch
CA1151975A (en) Selector valve
JPS54105681A (en) Speed change operation structure for speed change gear
JPS60220246A (en) Controller of actuator group
CN107804163A (en) A kind of full power gearshift and commutation gear box of tractor
JPS5496659A (en) Automatic transmission gear
CN207549956U (en) A kind of full power gearshift and commutation gear box of tractor
JPS5560747A (en) Controller for automatic speed change gear
JPS5582865A (en) Change over valve
JPS57134052A (en) Speed change system for use in range shift type transmission
JPH0328621B2 (en)
JPH0740780Y2 (en) Multiple selector valve
JPS5769149A (en) Hydraulic controller for automatic speed change gear
JPS5370282A (en) Multi-step oil hydraulic servo valve
GB873619A (en) Improvements in pressure fluid control units
JPS5652605A (en) Pressure fluid circuit
JPS566832A (en) Hydraulic circuit for hydraulic shovel
JPS5444155A (en) Oil pressure control device for automatic transmission
JPS6252250A (en) Hydraulic structure for shifting
JPH0524862Y2 (en)
GB670756A (en) Improvements in rotary distributing valves