30results about How to "Optimized gear ratio" patented technology

The invention relates to a drive device for a windshield wiper device for moving an output shaft (32), having an input shaft (12) which can be driven through a motor (10) and which is connected to a linear motion element (20) in a rotationally fixed manner, wherein the linear motion element (20) is connected to the output shaft (32) through exactly one coupler (24) and exactly one rocker (28), wherein the coupler (24) is supported between the linear motion element (20) and the rocker (28) in an articulated manner and the rocker (28) is connected to the output shaft (32) in a rotationally fixed manner. In said manner, large forces can be transmitted using self-locking in a small design.

A cycloid planetary transmission gear based on line-surface conjugation relates to a cycloid planetary transmission gear which comprises a cycloid pin wheel planetary transmission meshed pair. A smooth curve G(2) is selected on a gear surface of a gear in the meshed pair, the main normal vector direction of the curve G(2) is consistent with the normal direction of the gear surface, and the curve G(2) and the gear surface of another gear in the meshed pair form line-surface conjugation mesh. The gear surface of the gear is a tubular meshed surface which is a sphere family enveloping surface S(3) of which the sphere center moves along an equidistant line G(3), the equidistant line G(3) is a smooth curve which has a distance r from the curve G(2) along the main normal vector direction thereof, the spherical radius of spheres in the sphere family is the distance r between the equidistant line G(3) and the smooth curve G(2), and the r is smaller than the minimum curvature radius of the meshed section of the original gear surface. According to the present invention, through changing the cycloid pin wheel planetary transmission into the line-surface conjugation meshed pair, the meshed process is in the mode of point contact; therefore, the transmission ratio is great, the rigidity is good, the structure is compact, and the transmission accuracy is high. In this way, the mesh approximates pure rolling, so that the sliding ratio can be largely reduced, thereby greatly improving the efficiency, prolonging the service life, simplifying the manufacturing process, and achieving high accuracy.

The invention relates to the field of electronic-control automatic transmissions for vehicles, in particular to an automatic transmission capable of transmitting power by the aid of a shaft and plungers. The automatic transmission is characterized in that semicircular pits are uniformly machined on the radius circumferential surface of the shaft and are matched with the plungers corresponding to the semicircular pits, and the plungers are integrally connected with the shaft under the action of external pressure, so that the power can be transmitted. The automatic transmission with the structure has the advantages that the automatic transmission is simple in structure as compared with the traditional gear transmission, automatic gear shifting can be implemented without cutting off the power, the driving smoothness and the dynamic performance of a vehicle are improved, the economical efficiency is enhanced, and the automatic transmission not only can be used in limousines and light vehicles, but also can be conveniently popularized in trucks and heavy vehicles.

The invention discloses a variable-input and constant-output device adopting hydraulic and servo motor double regulation. The variable-input and constant-output device comprises a primary differential gear train, a secondary differential gear train, a hydraulic system, a servo motor, a rotating speed sensor, an ordinary gear train step transmission box and a reversing system. Hydraulic and mechanical double power flow transmission is adopted, and output power is large. In a double constant speed regulating scheme, the hydraulic system is used as a main executing system of constant-speed regulation to finish the regulation of large-range rotating speed variation caused by sudden load change, and the small-power servo motor is used as an auxiliary regulation executing system of constant-speed output to rapidly regulate small-range rotating speed fluctuation. In a single constant-speed regulating scheme, the small-power servo motor is used as an executing system of constant-speed regulation to rapidly regulate small-range fluctuating rotating speed. The three functions of constant speed output, stepless transmission and step transmission are creatively combined by the device to meet the requirements of different organizations and different work condition environments on a transmission device.

The invention discloses a multistage automatic transmission for a vehicle. The transmission comprises two or three power transmission mechanisms in the front, two planet rows and five or six gear shifting elements; the third rotary component of the second planet row is connected with an output; the first rotary components of the first and second planet rows are interconnected; the first and second gear shifting elements are connected in series between the second rotary component of the second planet row and the second and third rotary components of the first planet row in turn; the third gearshifting element is connected in series on the route of transmitting an input power to the third rotary component of the first planet row from the first power transmission mechanism; the fifth and sixth gear shifting elements are connected in series on the route of transmitting the input power to the first and second rotary components of the first planet row through the second power transmission mechanism or the second and third power transmission mechanisms in turn; and the fourth gear shifting element can selectively brake the third rotary component of the first planet row. The transmissionis provided with five or eight forward gears, each gear is combined with three gear shifting elements, and the gears can be arranged on split shafts so that the length of the gears is shortened and the gears are suitable for driving the vehicle forwards.