JPS57116956A - Oil pressure control for hydraulic clutch type speed change gear - Google Patents

Oil pressure control for hydraulic clutch type speed change gear

Info

Publication number
JPS57116956A
JPS57116956A JP223781A JP223781A JPS57116956A JP S57116956 A JPS57116956 A JP S57116956A JP 223781 A JP223781 A JP 223781A JP 223781 A JP223781 A JP 223781A JP S57116956 A JPS57116956 A JP S57116956A
Authority
JP
Japan
Prior art keywords
oil pressure
unloading
valve
hydraulic
hydraulic circuit
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.)
Granted
Application number
JP223781A
Other languages
Japanese (ja)
Other versions
JPS6137498B2 (en
Inventor
Hideaki Okada
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.)
KAMIZAKI KOKYU KOKI SEISAKUSHO KK
Kanzaki Kokyukoki Manufacturing Co Ltd
Original Assignee
KAMIZAKI KOKYU KOKI SEISAKUSHO KK
Kanzaki Kokyukoki Manufacturing Co 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 KAMIZAKI KOKYU KOKI SEISAKUSHO KK, Kanzaki Kokyukoki Manufacturing Co Ltd filed Critical KAMIZAKI KOKYU KOKI SEISAKUSHO KK
Priority to JP223781A priority Critical patent/JPS57116956A/en
Publication of JPS57116956A publication Critical patent/JPS57116956A/en
Publication of JPS6137498B2 publication Critical patent/JPS6137498B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Gear-Shifting Mechanisms (AREA)

Abstract

PURPOSE: To make the pressure regulating valve to return precisely to its initial condition to assure smooth and accurate speed changing operations by providing two types of hydraulic unloading valve connected to the clutch hydraulic circuit.
CONSTITUTION: No.2 hydraulic unloading valve 21, accompanying the movement of the switch valve 6, unloads the oil pressure in the hydraulic circuit 4. No.1 hydraulic unloading valve 20 tends to move in the nonoperative direction by the oil pressure in the hydraulic circuit 4 and spring 22 and also tends to move in the operative direction by the oil pressure behind the control piston 9 for the pressure regulating valve 7. No.1 unloading valve 20 is brought into the unloading position by the action of No.2 unloading valve 21 and after the unloading action it continues unloading the oil pressure in the hydraulic circuit 4 until the pressure regulating valve 7 returns to its initial condition.
COPYRIGHT: (C)1982,JPO&Japio
JP223781A 1981-01-09 1981-01-09 Oil pressure control for hydraulic clutch type speed change gear Granted JPS57116956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP223781A JPS57116956A (en) 1981-01-09 1981-01-09 Oil pressure control for hydraulic clutch type speed change gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP223781A JPS57116956A (en) 1981-01-09 1981-01-09 Oil pressure control for hydraulic clutch type speed change gear

Publications (2)

Publication Number Publication Date
JPS57116956A true JPS57116956A (en) 1982-07-21
JPS6137498B2 JPS6137498B2 (en) 1986-08-23

Family

ID=11523740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP223781A Granted JPS57116956A (en) 1981-01-09 1981-01-09 Oil pressure control for hydraulic clutch type speed change gear

Country Status (1)

Country Link
JP (1) JPS57116956A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184420A (en) * 1984-10-03 1986-04-30 Komatsu Ltd Clutch hydraulic control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184420A (en) * 1984-10-03 1986-04-30 Komatsu Ltd Clutch hydraulic control device

Also Published As

Publication number Publication date
JPS6137498B2 (en) 1986-08-23

Similar Documents

Publication Publication Date Title
JPS57116956A (en) Oil pressure control for hydraulic clutch type speed change gear
JPS5380628A (en) Inching valve of hydraulic pressure control device for clutch
JPS53134175A (en) Fluid pressure control valve for two brake systems
JPS53136235A (en) Device for controlling steering of moving agricultural machine
JPS5229570A (en) Oil pressure control device of automatic change gear for vehicles
JPS5214174A (en) Oil pressure control device of automatic reduction gear
JPS53139011A (en) Valve mechanism of internal combustion engine
JPS5222689A (en) Pilot servo valve device
JPS52103006A (en) Hydraulic system of piston pump for pressure feeding of liquid
JPS53141874A (en) Automatic oscilation control device for fluid pressure cylinder
JPS535379A (en) Driving unit
JPS5547040A (en) Regulator valve for automatic speed change gear
JPS5341678A (en) Mult-stage actuator
JPS5410862A (en) Transmission automatic controller
JPS52156271A (en) Automatic speed change controller
JPS56109957A (en) Ball valve
JPS52131054A (en) Fluid pressure control device in frictional clutch
JPS5285618A (en) Automatic valve clearance adjustor
JPS52148786A (en) Multispeed control circuit
JPS527052A (en) Expansion valve
JPS57134053A (en) Hydraulic control for automatic speed change gear
JPS5430379A (en) Fluid controller
JPS5597548A (en) Controller for automatic change gear
JPS52135966A (en) Pressurized fluid control device of automatic change gear for automobile
JPS5266163A (en) Torque actuator