A torque-changing planetary gear crankshaft device

Abstract

A torque-changing planetary gear crankshaft device comprises an inner gear ring on a crankcase, a double planetary gear and an output sun gear, wherein the double planetary gear is installed on the outer side of the crankshaft output end journal and meshes with the inner gear ring, and the output sun gear is meshed inside and outside. The output sun gear serves as the crankshaft power terminal output wheel (shaft). This torque-changing planetary crankshaft adopts planetary gears as the leading components to transmit torque according to the characteristics of planetary gears and mechanical principles, thereby increasing the crankshaft speed, increasing the torque, and significantly improving the output efficiency. The form is novel and unique, the structure is simple and reasonable and irreplaceable, the transmission performance is stable and reliable, and it is widely used. The application of technology will effectively reduce energy consumption and better meet the urgent needs of energy conservation, carbon reduction, and environmental improvement.

Description

[0001] Background technology: At present, because the planetary gear does not transmit motion, there is no planetary gear involved in the work of the traditional crankshaft, and the output efficiency cannot be greatly improved.

[0002] Invention content: In order to change the current technical situation, the present invention provides a planetary gear crankshaft device which uses planetary gears as the leading transmission component, according to the characteristics of planetary gears and mechanical principles, through the change of the radius of the planetary gears and the setting of the instantaneous fulcrum, the selection of the force point, the adjustment of the input and output angular speeds and linear speeds, increases the crankshaft speed, increases the torque, saves the original input force, and greatly improves the transmission efficiency.

[0003] The technical solution adopted by the present invention to solve the technical problem is: comprising a crankcase 1 and an inner gear ring 2, a crank 3, a double planetary gear 4, an output sun gear 5, and a crankshaft main journal 6. The double planetary gear 4 is installed on the crank 3 outside the connecting rod journal at the output end of the crankshaft, the large wheel in the double planetary gear 3 is meshed with the inner gear ring 2, and the small wheel is meshed with the output sun gear 4 outside. The output sun gear 4 is the terminal output wheel of the crankshaft power, and the axis of the output sun gear 5 and the axis of the crankshaft main journal 6 are on the same geometric axis; the crank 3 passes through the crankshaft main journal 6 and is installed with a double planetary gear with the same structure as the double planetary gear 4. The large and small wheels of the double planetary gear are separately meshed with the fixed and movable shaft sun gears, so as to adjust the speed ratio of the original crankshaft and the output sun gear, increase the active torque, increase the torque, and achieve the purpose of improving the output efficiency.

[0004] The beneficial effects of the present invention are: novel and unique form, simple and reasonable structure and irreplaceable, stable and reliable transmission performance, and experiments have proved that the basic transmission efficiency is increased by more than 11%. It better meets the urgent needs of energy conservation, emission reduction and environmental improvement. Description of the drawings:

[0005] The present invention will be further described below in conjunction with the accompanying drawings.

[0006] Figure 1 This is the main view of the present invention

[0007] Figure 2 It is the left view of the present invention

[0008] Figure 1 Among them, 1. crankcase, 2. inner ring gear (fixed axis sun gear), 3. crank, 4. double planetary gear, 5. output sun gear. Figure 2 Middle, 6 crankshaft main journals. Specific implementation method:

[0009] exist Figure 1In the specific embodiment shown, an inner gear ring 2 (fixed axis sun gear) is installed in the crankcase 1, and a double planetary gear 4 is installed on the outer side of the connecting rod journal. The large wheel of the double planetary gear 4 meshes with the inner gear ring 2, and the small wheel meshes with the outer (inner) output sun gear 5. The output sun gear 5 is the terminal output wheel (shaft) of the torque-changing planetary crankshaft. When the crank 3 rotates, the double planetary gear 4 is driven to rotate around its own axis on the one hand, and to revolve around the axis of the crankshaft journal 6 on the other hand and drive the output sun gear 5 to rotate. The small wheel of the double planetary gear 4 drives the output sun gear 5 to rotate and output power.

[0010] In the double planetary gear 4, the axis is the original working force input point, the meshing point with the inner gear ring 2 is the fulcrum, the distance (radius) from the fulcrum to the axis is the input swing arm, and the distance from the fulcrum to the meshing point with the small wheel (radius of the double planetary gear 4 + radius of the small wheel) is the output swing arm. Although the output swing arm is larger than the input swing arm, according to the transmission ratio law of the planetary gear system, the speed increase of the output sun gear 5 is always greater than the speed of the crank 2. Therefore, the input torque is increased, the input force is saved, and the transmission efficiency is improved. Figure 2 In the embodiment shown, the crank 3 passes through the crankshaft journal 6 and a double planetary gear 4 with the same structure is installed at the other end. In order to ensure uniform force and balanced rotation, the crank 3 can also be arranged in multiple pieces evenly. Since they have the same structure and the same force conditions, they are not marked in the figure.

Claims

1. A torque-changing planetary gear crankshaft device, comprising a crankcase (1), an inner gear ring (2), a crank (3), a double planetary gear (4), an output sun gear (5), and a crankshaft main journal (6), wherein: The double planetary gear (4) is installed on the crank (3) outside the connecting rod journal (7) at the output end of the crankshaft. The large gear in the double planetary gear (3) is internally meshed with the inner gear ring (2), and the small gear is externally meshed with the output sun gear (4). The output sun gear (4) is the terminal gear of the crankshaft power. The axis of the output sun gear (5) and the axis of the crankshaft main journal (6) are on the same geometric axis.

2. The torque-variable planetary crankshaft according to claim 1 is characterized in that: The crank (3) passes through the crankshaft main journal (6) and is mounted with a double-linked planetary gear having the same structure as the double-linked planetary gear (4).

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