JPS5618155A - Self-traveling tractor - Google Patents
Self-traveling tractorInfo
- Publication number
- JPS5618155A JPS5618155A JP9274679A JP9274679A JPS5618155A JP S5618155 A JPS5618155 A JP S5618155A JP 9274679 A JP9274679 A JP 9274679A JP 9274679 A JP9274679 A JP 9274679A JP S5618155 A JPS5618155 A JP S5618155A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic motors
- change
- motors
- hydraulic motor
- 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
Links
- 239000013256 coordination polymer Substances 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
Landscapes
- Motor Power Transmission Devices (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
PURPOSE: To make it possible to perform normal or reverse stepless speed change in a wide range by forming a closed circuit between at least three hydraulic motors of travel driving hydraulic motor and operating machine driving hydraulic motor, which are in connected state, and a hydraulic pump.
CONSTITUTION: Hydraulic motors RM and LM are directly connected to left and right rear wheels, and a hydraulic motor PM is directly connected to a PTO shaft. Respective hydraulic motors are connected in series with each other and there is formed the closed circuit CC in which pressurized oil between respective hydraulic motors and the constant capacitance type hydraulic pump driven by an engine successively passes through the hydraulic motors PM, RM and LM and refluxes to the hydraulic pump P. The control of supply or interruption of pressurized oil with respect to each hydraulic motor and the control of the supply direction are performed by change-over valves V1WV3. Any of change-over valves is a 4-port, 3-position change-over valve, and controlled by a control circuit CTR. A charge pump CP for supplying pressurized oil is provided on an oil path connecting oil ports of respective hydraulic motors.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9274679A JPS5618155A (en) | 1979-07-19 | 1979-07-19 | Self-traveling tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9274679A JPS5618155A (en) | 1979-07-19 | 1979-07-19 | Self-traveling tractor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5618155A true JPS5618155A (en) | 1981-02-20 |
Family
ID=14062971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9274679A Pending JPS5618155A (en) | 1979-07-19 | 1979-07-19 | Self-traveling tractor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5618155A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63125509A (en) * | 1986-11-14 | 1988-05-28 | Okura Ind Co Ltd | Photocurable, anaerobically curable composition |
JPS63172724U (en) * | 1987-04-30 | 1988-11-09 | ||
JPH0393227U (en) * | 1990-01-12 | 1991-09-24 | ||
WO2013118356A1 (en) * | 2012-02-06 | 2013-08-15 | 住友重機械工業株式会社 | Hydraulic closed circuit system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5013906A (en) * | 1973-06-08 | 1975-02-13 | ||
JPS50138271A (en) * | 1974-04-22 | 1975-11-04 |
-
1979
- 1979-07-19 JP JP9274679A patent/JPS5618155A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5013906A (en) * | 1973-06-08 | 1975-02-13 | ||
JPS50138271A (en) * | 1974-04-22 | 1975-11-04 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63125509A (en) * | 1986-11-14 | 1988-05-28 | Okura Ind Co Ltd | Photocurable, anaerobically curable composition |
JPS63172724U (en) * | 1987-04-30 | 1988-11-09 | ||
JPH0393227U (en) * | 1990-01-12 | 1991-09-24 | ||
WO2013118356A1 (en) * | 2012-02-06 | 2013-08-15 | 住友重機械工業株式会社 | Hydraulic closed circuit system |
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