Title:
POWER TRANSMISSION DEVICE FOR HYDRAULIC DRIVE TYPE CRAWLER VEHICLE
Document Type and Number:
Japanese Patent JP3217565
Kind Code:
B2
Abstract:
PURPOSE: To realize speed change in a broad range while having a continuously variable speed change function by arranging independently in right and left respectively a variable displacement type hydraulic pump, a variable displacement type hydraulic motor, and a final speed reducer having a speed-switching clutch for low and high speed stages.
CONSTITUTION: Two variable displacement type hydraulic pumps 3 are provided, which are driven via a transfer 2 by an input shaft 1 from a power generation device such as an engine, and the discharged oil of each pump is supplied to respective variable displacement type hydraulic motors 4 via respective separate oil parts to transmit the output rotation of the respective motors 4 to two speed-changeable final transmissions 15. The final transmission 15 has a mechanical reduction gear 6 to which a hydraulic motor output shaft 5 is to be connected, and the sun gear 8a and a rotation clutch 9 for a high speed stage of a first stage planetary gear 8 are connected to the output shaft 7 of the mechanical reduction gear 6. The carrier 8b of the first stage planetary gear 8 is connected to a service brake 10 and the sun gear 11a of a second stage planetary gear 11, and output shafts 13 and 14 are connected to the carrier 11b of the second stage planetary gear 11.
Inventors:
Masami Hirasawa
Yasuo Kuwahara
Yasuo Kuwahara
Application Number:
JP32225793A
Publication Date:
October 09, 2001
Filing Date:
December 21, 1993
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B60K17/10; F16H47/04; (IPC1-7): F16H47/04; B60K17/10
Domestic Patent References:
| JP3248918A | ||||
| JP7149160A | ||||
| JP539340B2 | ||||
| JP5138970B1 |
Attorney, Agent or Firm:
Koharu Fujita (3 outside)