Continuously variable transmission with a swashplate pump

Details Continuously variable transmission with a swashplate pump Continuously variable transmission with a swashplate pump

F - Mech Eng,Light,Heat,Weapons

16

H

138/42.15

F16H 39/10 (2006.01) F16H 39/14 (2006.01) F16H 61/42 (2006.01)

Patent

CA 1293670

70488-4D ABSTRACT OF THE DISCLOSURE A static hydraulic pressure type continuously variable transmission formed with a hydraulic closed circuit between a swashplate type hydraulic pump and a swashplate type hydraulic motor, the hydraulic motor being constructed such that its motor cylinder is integrally connected to an output shaft which extends through a motor swashplate and a swashplate holder for supporting the back surface of the motor swashplate, a swashplate anchor for supporting the back surface of the swashplate holder being axially immovably connected to the output shaft through a thrust bearing, and that the swashplate anchor is unrotatably connected to a casing which rotatably supports the output shaft. The motor cylinder and a pump cylinder of the hydraulic pump are provided coaxially with the hydraulic closed circuit interposed therebetween. The hydraulic closed circuit is provided with a distribu- tion valve for bringing low and high pressure oil passages, which are in communication with cylinder bores of the pump cylinder, into selective communication with cylinder bores of the motor cylinder, and a clutch valve for con- trolling communication between the low and high pressure oil passages. Where the swashplate type hydraulic motor is of a variable capacity type, means is provided which adjusts an angle of inclination of the motor swashplate to effect speed change control.

615886

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