Stepless closed planetary hydromechanical variable

 

(57) Abstract:

Stepless closed planetary hydromechanical variable is intended to extend the control range of rotation of the driven shaft from zero to direct and includes two planetary range and the torque Converter. Epicycle gear of the first planetary series of rigidly connected with the driven shaft. Shaft sun gear of the same number is rigidly connected to the turbine wheel of the torque Converter. Drove the first row has dvuhventsovye satellites. The sun gear of the second planetary series of rigidly connected with the pump wheel of the torque Converter. Epicycle gear is made integral with the Central gear of the first planetary series. Drove with paired satellites rigidly connected with the driven shaft. Drive shaft rigidly connected to the housing of the torque Converter, the reactor of the torque Converter and the planet carrier of the first planetary series. 1 Il.

The invention relates to mechanical engineering and can be used in cars instead of the transmission.

Known hydromechanical transmission having a planetary range, epicycle gear which is rigidly connected with the pump wheel of the torque Converter the Disadvantage of this hydromechanical transmission is low efficiency, in which only a small portion of the engine power is transmitted to the driven shaft, bypassing the hydraulic transmission, but the hydraulic element in the whole working area is only working brake.

Closest to the invention is a continuously variable closed planetary hydromechanical variable that contains the driving and driven shafts, a torque Converter and two planetary series, the first of which includes rigidly connected with the driven shaft epicycle gear, Sunny and Central gear and drove with dvuhventsovye satellites. Second planarity range includes epicycle gear made integral with the Central gear of the first planetary series, the sun gear and rigidly connected with the driven shaft drove with paired satellites [2]. This option is semipotochnaya. In it the main part of the power of the engine passes through the mechanical parts of the device, and seven power flow are summarized on the driven shaft. For direct transmission, the torque Converter operates as a fluid coupling.

Object of the invention is the extension of the control range of rotation of the driven shaft from zero to direct transmission with low range transformation of the torque Converter, efficiency and the mind is hydrated variable contains the driving and driven shafts, torque Converter and two planetary series, the first of which - with dvuhventsovye satellites, and the second with a pair of satellite speakers. Epicycle gear of the first planetary series of rigidly connected with the driven shaft. Central toothed gear of the first planetary series is in toothed engagement with small crowns dvuhventsovye satellites and made integral with epicycle gear of the second planetary series. Shaft sun gear of the first planetary series is rigidly connected to the turbine wheel of the torque Converter. Carrier of the second planetary series of rigidly connected with the driven shaft, a sun gear of the second planetary series of rigidly connected with the pump wheel of the torque Converter, and a drive shaft rigidly connected to the housing of the torque Converter, the reactor of the torque Converter and the planet carrier of the first planetary series.

The drawing shows a kinematic diagram of the device.

Stepless closed planetary hydromechanical variable contains a leading 1 and slave 2 shafts, torque Converter 3 and two planetary series 4 and 5, the first of which - with dvuhventsovye satellites 6 and the second pair of satellites 7. Drove 8 of the first planetary series of rigidly connected with the enjoyment of the first planetary series of rigidly connected with the driven shaft 2. Central toothed gear 12, which is in toothed engagement with small crowns 13 dvuhventsovye satellites 6 made integral with epicycle gear 14 of the second planetary number 5. Drove 15 of the second planetary number 5 is rigidly connected with the driven shaft 2 and the sun gear 16 of the second planetary series is rigidly connected to the shaft 17 with the pump wheel 18 of the torque Converter. The sun gear 19 of the first planetary series, which is in toothed engagement with large crowns 20 dvuhventsovye satellites, also connected to the shaft 21 with the turbine wheel 22 of the torque Converter 3.

Hydromechanical variable is vosmipolosnoy transmission works in conjunction with a single-stage torque Converter, built sequentially in a mud branch, providing a self-tuning to the desired mode of operation, changing smoothly torque on the driven shaft in a wide range, the angular velocity which varies from zero to direct transmission. The engine from dvuhventsovye satellites 6 is divided into two streams, one stream on the epicycle gear 11 and the driven shaft 2, the second stream from the Central toothed gear 12 on the epicycle gear 14, through which the steam SATELEC departs from the sun gear 16 through the shaft 17 to the pump wheel 18, the reactor 9, and then the turbine wheel 22 through the shaft 21 to the sun gear 19. Then a third thread with the increased torque passes through the circuit to the epicycle gear 14 and again divided into two streams. The third stream on the driven shaft 2, and a fourth stream, circulating with the increased torque, again passes through the circuit on the driven shaft 2. The fifth flow engine power from the reactor 9 of the torque Converter 3 having a positive sign action closes on the drive rod of the drive shaft 1, from which the flow of power is also split along the same paths, increasing their number to eight threads. All power flows are summarized on the driven shaft 2 with the appropriate torque. The range of the transformation of the torque Converter 1,5 ensures normal operation of the device when changing the angular velocity of the driven shaft from zero to direct transmission. In the work prevails portable movement of all shafts and gear wheels, which increases the efficiency of the device. For the direct transmission of the entire device rotates as a unit, without mechanical friction losses.

The sources of information.

1. Prokofiev Century. N. Fundamentals of theory of hydromechanical transmission.- M: mechanical engineering, 1968, S. 391, Fig. the definition variable, contains the driving and driven shafts, a torque Converter and two planetary series, the first of which includes rigidly connected with the driven shaft epicycle gear, Sunny and Central sestren and drove with dvuhventsovye satellites, the second planetary range includes epicycle gear made integral with the Central gear of the first planetary series, the sun gear and rigidly connected with the driven shaft drove with a pair of satellites, wherein a sun gear of the second planetary series of rigidly connected with the pump wheel of the torque Converter, the shaft sun gear of the first planetary series is rigidly connected to the turbine wheel of the torque Converter, and drive shaft rigidly connected to the housing of the torque Converter, the reactor of the torque Converter and the planet carrier of the first planetary series.

 

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