Variable ph

 

(57) Abstract:

The invention relates to mechanical engineering and can be used in transmission vehicles. The variator includes mechanical and hydraulic control. The mechanical part consists of coaxially arranged input and output shafts is rigidly secured to them the master and the slave wheel, carrier and multi-gear, and is a leading sprocket with fewer teeth. Hydraulic control formed the conclusion of a pair of conjugate gears in ermetico chamber filled with liquid. Zones of low and high pressure is connected a by-pass channel with the installed managed choke. 3 Il.

The invention applies to many fields of engineering and, in particular, can be used in transmission vehicles.

Known friction multidisc changers made by the same kinematic patterns that gear and planetary gear. In such progressive change of the gear ratio by changing the calculation of the radius of the rolling disk.

However, the disadvantage of this type of variable-speed drives is limited to a load of spasti to the claimed solution is hydromechanical transmission, containing planetary gear, gear pump and hydraulic motor, hydraulically connected through a distribution device that changes the number of working zones of the motor, the working gear of the pump is made in the form satelite and a sun gear connected to the drive shaft, and the working gear of the motor is connected with the driven shaft [2].

The disadvantage of the hydromechanical transmission is the inability stepless change on the output shaft power and torque during constant power, due to the possible application of kinematic schemes.

The task of the invention is to provide a stepless regulation on the output shaft power and torque when power is constant.

This task is achieved by the fact that the variator includes a housing, input and output shafts, a leading and a follower wheel, and drove liquid.

The distinctive signs of significant, i.e., each of them necessary and together sufficient for solving the problem.

The variator fitted with a sealed chamber and block the gear mounted on a drive rod and being in engagement with the wheels, leading and follower gear fixed on the input and output is the Amer, zones of low and high pressure chambers are connected by a by-pass channel with the installed managed throttle, and drive wheel is less than that of the slave, the number of teeth.

In Fig. 1 shows a variator, a longitudinal section; Fig. 2 - the same, lateral view; Fig. 3 - section a-a in Fig. 2.

The variator includes a housing 1, which coaxially installed input 2 and output 3 shafts is rigidly fixed on them leading 4 and led 5 wheels being in engagement with the block-gear 6, which is installed in the driver 7. Carrier includes a fluid-filled chamber, covering a pair of conjugate gears, as well as the bypass channel 8 has mounted on a controllable throttle 9.

The variator works as follows.

Torque from the input shaft 2 through a driving wheel 4 is transmitted to the block-gear 6, simultaneously with the rotation of the transfer fluid in Mizuno space of the drive wheel 4 and are with her in the meshed gears.

When fully open the throttle 9 fluid circulates freely through the bypass channel 8 without creating resistance to rotation of the block-gear 6, which allows it to our teams on the stationary is otulana the flow of fluid, which provides resistance to rotation of the block-gear 6, the resulting torque on the driven wheel 5 and the output shaft 3.

With the throttle fully closed 9 circulation of fluid is stopped and the block-gear 6 is locked relative to the carrier 7, resulting in the input 2 to the output shaft 3 and the planet carrier 7 are rotated as one unit.

Control transmitted by the variator power enclosed in the interval from the full opening of the throttle degree of opening of the throttle, at which the angular velocity was taken to be zero, with further decrease the degree of opening of the throttle allows you to adjust on the output shaft only torque.

The variable-speed drive, comprising a housing, input and output shafts, a leading and a follower wheel, and drove liquid, characterized in that it is fitted with a sealed chamber and block the gear mounted on a drive rod and being in engagement with the wheels, leading and follower gear fixed on the input and output shafts, the liquid fills the sealed chamber, a pair of conjugate gears enclosed in a sealed chamber, zones of low and high pressure chambers are connected by a by-pass channel with the installed managed throttle, and

 

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