Planetary gear multi-way drive stepless speed variator

[0036] Embodiment 1: In conjunction with Figure 1, in the input stage planetary gear mechanism, an optional planet carrier [1] is used as the main input gear of the input stage planetary gear mechanism, which is connected to torque power, and the sun gear of the input stage planetary gear mechanism is used. ] And the ring gear [8] are used as the two output gears of the input stage; in the output stage planetary gear mechanism, the optional planet carrier [4] is used as the main output gear of the output stage planetary gear mechanism to drive the rear-stage transmission mechanism and use the output stage The sun gear [5] and the ring gear [7] of the planetary gear mechanism are used as the two input gears of the output stage. The output sun gear of the input stage planetary gear mechanism [10] and the input ring gear of the output stage planetary gear mechanism [7] are used to form the input stage sun gear and output stage ring gear transmission path [2] of torque transmission for high speed and low torque transmission Path; Use the output ring gear of the input stage planetary gear mechanism [8] and the input sun gear of the output stage planetary gear mechanism [5] to form the input stage ring gear and output stage sun gear transmission path of torque transmission [3], for low speed and high speed Torque transmission path. Assuming that the input torque rotates counterclockwise, the low-speed high-torque transmission path [3] and the high-speed low-torque transmission path [2] have a counterclockwise rotation trend driven by the input torque, and drive the main output gear [4] counterclockwise Turn in the clockwise direction. It is specifically geared in this way. When the resistance torque of the main output gear [4] of the planetary gear mechanism at the start or the output stage is greater than that of the low-speed and high-torque transmission path, the two transmission paths will be The torque distributed by the input stage planetary gear mechanism is transmitted to the main output gear of the output stage planetary gear mechanism [4], but at this time the low speed and high torque transmission path [3] transmission torque is greater than the high speed and low torque transmission path [2] transmission The torque of the main output gear [4] and the resistance torque of the subsequent transmission to the ring gear [7] is also greater than the torque of the high-speed and low-moment transmission path [2], and the high-speed and low-moment transmission path [2] ] Can’t overcome the drive of the low-speed and high-torque transmission path [3] and reverse, turning into a clockwise direction, and transfer the torque from the low-speed and high-torque transmission path [3] to the high-speed and low-torque transmission path [2] The difference of torque is transmitted back to the input stage planetary gear mechanism, and the main input gear of the input stage planetary gear mechanism [1] jointly drives the low-speed and high-torque transmission path [3], so that the speed and torque are increased at the same time. The high-speed and low-torque transmission path [2] works in conjunction with the main input gear [1] during the reverse (clockwise rotation) process to increase the torque and drive capability of the original low-speed and high-torque transmission path [3]. The torque obtained by the main output gear [4] of the output stage planetary gear mechanism increases, and the speed continues to increase. As the speed of the main output gear [4] continues to increase (that is, the acceleration continues to decrease), its rear-stage transmission resistance torque continues to decrease, and the transmission tasks that share the low-speed and high-torque transmission path [3] also increase, so The reversal speed of the high-speed and low-torque transmission path [2] decreases continuously until the reversal stops. When the rotation speed of the main output gear [4] is increased to a certain speed, the transmission torque of the high-speed and low-torque transmission path [2] is greater than the resistance torque distributed by the main output gear [4], and the high-speed and low-torque transmission path [2] will reverse Rotate in the clockwise direction to reduce the speed of the low-speed and high-torque transmission path [3] proportionally. The high-speed and low-torque transmission path [2] starts to drive the main output gear [4] in conjunction with the low-speed and high-torque transmission path [3] to make the main output gear [4] The speed is further increased. In this way, through the two-way rotation process of the high-speed and low-torque transmission path [2], when reverse rotation (clockwise rotation), it shares the speed of the main output gear [4] and transmits the reverse torque back to the input stage planetary gear mechanism. Drive the low-speed and high-torque transmission path [3] at the same time with the input torque, so that the torque of the low-speed and high-torque transmission path [3] is increased, and the drive capability is enhanced, so that the main output gear [4] can rotate at a low speed; forward rotation (counterclockwise rotation) ), it combines the input torque distributed by the input stage planetary gear mechanism with the low-speed and high-torque transmission path [3] to drive the main output gear of the output stage planetary gear mechanism [4], through the two changing speeds and rotation modes. The torque transmission path completes the infinitely variable speed task of torque transmission.

[0037] Embodiment 2: With reference to Figure 2, the optional ring gear [1] in the input stage planetary gear mechanism is used as the main input gear of the input stage planetary gear mechanism, which is connected to the torque power, and the sun gear of the input stage planetary gear mechanism is used. ] And the planet carrier [3] are used as the two output gears of the input stage; in the output stage planetary gear mechanism, the optional ring gear [5] is used as the main output gear of the output stage planetary gear mechanism to drive the rear-stage transmission mechanism and use the output stage The sun gear [7] and planet carrier [6] of the planetary gear mechanism are used as the two input gears of the output stage. Use the output sun gear of the input stage planetary gear mechanism [10] and the input planet carrier of the output stage planetary gear mechanism [6] to form a high-speed and low-torque transmission path of torque transmission [9]; use the output planet carrier of the input stage planetary gear mechanism [3] and the input sun gear of the output stage planetary gear mechanism [7] constitute the low-speed and high-torque transmission path of torque transmission [4]. Assuming that the input torque rotates counterclockwise, under the input torque drive, the low-speed and high-torque transmission path [4] has a counterclockwise rotation trend, and the high-speed and low-torque transmission path [9] has a clockwise rotation trend, and the two groups rotate The paths all drive the main output gear [5] to rotate clockwise. In the torque transmission process, the high-speed and low-torque transmission path automatically adjusts the rotation mode and speed according to the input torque and speed, resistance torque and speed, and changes in the working environment, so that the rotation speed of the low-speed and high-torque transmission path occurs Corresponding changes complete the task of continuously variable torque conversion.

[0038] Embodiment 3: With reference to Figure 3, it is based on embodiment 2 (or embodiment 1), adding a planetary gear mechanism as a driving stage before the input stage of the continuously variable transmission. Use the drive stage ring gear [17] as the input wheel to connect with the input torque, use the drive stage planet carrier [15] as the auxiliary wheel to drive the main input gear of the continuously variable transmission [1], and use the drive stage sun gear [14] ] The driving wheel is connected with the main output gear [5] via the clutch [11]. In a certain range, the speed change of the planet carrier [15] is coordinated and synchronized with the speed of the sun gear [14] after the torque is changed by the continuously variable transmission to complete the torque synthesis; when the resistance torque is small, the output gear [14] When the speed is high, the speed of the planet carrier [15] is reduced to the highest speed by the continuously variable transmission and is lower than the speed of the sun gear [14], or the torque of the main output gear [5] of the continuously variable transmission When the small impact on the driving wheel [14] is not significant, the clutch [11] is disconnected, and the main output gear [5] or planet carrier [15] is locked at the same time, preventing the planet carrier [15] from continuing to rotate, so that the torque is completely reduced Sun gear [14] output.