US 2012/0058854 A1 · TRANSMISSION DEVICE FOR WORK VEHICLES

Abstract

Disclosed is a transmission device for work vehicles, said transmission device being capable of being used with high-horsepower engines, without an accompanying loss of power transmission efficiency or fuel economy. The transmission device is provided with: an input shaft (20) that transmits power from an engine (3); a continuously-variable transmission (40) that is disposed on the input shaft (20) and outputs power transmitted from the input shaft (20), steplessly converting the speed thereof; and a reversing clutch device (50) that outputs, either in a forward rotational direction or a reverse rotational direction, power outputted from the continuously-variable transmission (40). The reversing clutch device (50) can be selectively switched, and the gear ratio can be steplessly changed by the continuously-variable transmission (40).

Claims11

Dependent claims

(canceled)

A transmission device for work vehicles comprising:

an input shaft that transmits power from a drive source;
a continuously-variable transmission that is disposed on the input shaft and outputs power transmitted from the input shaft, steplessly converting the speed thereof;
a reversing clutch device that outputs, either in a forward rotational direction or a reverse rotational direction, power outputted from the continuously-variable transmission;
a combining clutch device that outputs power outputted from the continuously-variable transmission;
and
a planetary gear mechanism that combines power from the drive source and power outputted from the combining clutch device into combined power and outputs the combined power,
wherein the reversing clutch device and the combining clutch device are selectively switched, and the gear ratio is steplessly changed by the continuously-variable transmission so as to perform speed change operation.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/319,972Filed 27 Apr 2010

Priority

JP 2009-11603913 May 2009

Published

8 Mar 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16H 47/02
Combinations of mechanical gearing with fluid clutches or fluid gearing: the fluid gearing being of the volumetric type
F16H 47/04
The fluid gearing being of the volumetric type: the mechanical gearing being of the type with members having orbital motion
F16H 2037/0886
Power-split transmissions with summing differentials, with the input of the CVT connected or connectable to the input shaft: with switching means,…
F16H 2200/0004
Transmissions for multiple ratios: comprising a power take off shaft

Transmission device for work vehicles

Life of this patent

Transmission device for work vehicles

Life of this patent

Abstract

Claims11