JPS6444382A - Speed change steering device - Google Patents

Speed change steering device

Info

Publication number
JPS6444382A
JPS6444382A JP20081987A JP20081987A JPS6444382A JP S6444382 A JPS6444382 A JP S6444382A JP 20081987 A JP20081987 A JP 20081987A JP 20081987 A JP20081987 A JP 20081987A JP S6444382 A JPS6444382 A JP S6444382A
Authority
JP
Japan
Prior art keywords
backward movement
movement
speed change
clutch
engaged
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
JP20081987A
Other languages
Japanese (ja)
Inventor
Ryoichi Maruyama
Eiki Yamada
Tsutomu Ishino
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 JP20081987A priority Critical patent/JPS6444382A/en
Publication of JPS6444382A publication Critical patent/JPS6444382A/en
Pending legal-status Critical Current

Links

Landscapes

  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)

Abstract

PURPOSE:To obtain a broad range stepless speed change stage in both forward movement and backward movement by switching a forward/backward movement switching device to engage any of the first to third clutches of a single or double planetary gearing. CONSTITUTION:The rotation driving force from a input shaft 1 is transmitted to the second and third planetary gearings 9 and 10 through a forward/backward switching device 23 and the engagement with any of the first to third clutches 12-14 or to the first and fourth planetary gearings 8 and 11 through the hydraulic pumps 4 and 5 and hydraulic motors 6 and 7 of the right and left sides and also output from the output shafts 2 and 3 of the right and left sides. Now, if only the first clutch 12 is engaged, the forward/backward movement of the first speed stage is obtained, and if the second clutch 13 is engaged, the forward/ backward movement of the second speed stage, and if the third clutch is engaged, the forward/backward movement of the third speed stage is obtained. And the connection of the ring gears 8r and 11r of the first and fourth planetary gearings 8 and 11 through a main spindle 15 allows a car to go ahead and steer right and left. A broad range stepless speed change stage in both forward movement and backward movement can, thus, be obtained.
JP20081987A 1987-08-13 1987-08-13 Speed change steering device Pending JPS6444382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20081987A JPS6444382A (en) 1987-08-13 1987-08-13 Speed change steering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20081987A JPS6444382A (en) 1987-08-13 1987-08-13 Speed change steering device

Publications (1)

Publication Number Publication Date
JPS6444382A true JPS6444382A (en) 1989-02-16

Family

ID=16430728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20081987A Pending JPS6444382A (en) 1987-08-13 1987-08-13 Speed change steering device

Country Status (1)

Country Link
JP (1) JPS6444382A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63306573A (en) * 1987-06-05 1988-12-14 Sharp Corp Information recording disk reproducing device
WO1998051523A1 (en) * 1997-05-14 1998-11-19 Yanmar Agricultural Equipment Co., Ltd. Drive unit for crawler working vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63306573A (en) * 1987-06-05 1988-12-14 Sharp Corp Information recording disk reproducing device
WO1998051523A1 (en) * 1997-05-14 1998-11-19 Yanmar Agricultural Equipment Co., Ltd. Drive unit for crawler working vehicles
US6336886B1 (en) 1997-05-14 2002-01-08 Yanmar Agricultural Equipment Co. Drive unit for crawler working vehicles

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