Double planetary gear transmission mechanism

Abstract

The utility model discloses a double-planetary gear transmission mechanism in which a sun gear and a planetary gear in a planetary gear can rotate in a gear ring in a planetary manner, and the sun gear is a fixed star and the planetary gear can rotate along with a planetary carrier. The sun gear drives the planet gear in a vertical mode so that the planet gear can achieve the effect of transmission in the three-dimensional direction in the planet gear set, and meanwhile the effect that the torque of the planet gear is increased is achieved. A double-planetary-gear transmission mechanism comprises a first planet gear, a second planet gear, a chain, a planet carrier and a gear ring. The first planet gear and the second planet gear are sequentially and rotatably assembled on the planet carrier, the first planet gear is rotatably assembled at the position, close to the circle center, of the planet carrier in the direction vertical to the gear ring, the second planet gear is rotatably assembled at the position, close to the gear ring, of the planet carrier, and the first planet gear is meshed with the second planet gear. One side of the second planet gear is meshed with the gear ring, the other side of the second planet gear is meshed with the first planet gear, the first planet gear and the second planet gear are further meshed through chain transmission or shaft transmission, the planet carrier and a gear ring circular shaft are fixedly connected into an integral structure, and a bearing is assembled at the position of the gear ring central circular shaft. According to the double-planetary-gear transmission mechanism, the operation track of a universe galaxis can be more visually felt when the double-planetary-gear transmission mechanism operates, and in order to meet the use requirement, the double-planetary-gear transmission mechanism achieves the effect of transmission in the three-dimensional direction in the planetary gear set and meanwhile has the effect of increasing the torque of the planetary gears.

Description

Technical Field

[0001] This utility model belongs to the technical field of mechanical transmission mechanisms, specifically relating to a gear transmission mechanism. Background Technology

[0002] Existing planetary gears typically consist of a sun gear, a row of planet gears, and a ring gear. Force transmission is limited to a single plane, failing to achieve three-dimensional transmission (like a cross-shaped axis). Furthermore, existing planetary gears treat the sun gear as a star, allowing it to rotate only on its own axis and not with the carrier. However, in reality, the sun is both a star for Earth and a planet for other galaxies, orbiting them. Integrating this characteristic—the sun being both a star and a planet, capable of orbiting other galaxies—into planetary gears better aligns with the logic of galactic motion, providing a more intuitive understanding of the cosmic orbital trajectory during operation. To meet these requirements, this invention provides a dual planetary gear transmission mechanism that achieves three-dimensional transmission within a planetary gear set, while also increasing torque. Summary of the Invention

[0003] This utility model discloses a double planetary gear transmission mechanism in which both the sun gear and planet gears are rotatable in a planetary manner within a gear ring. The sun gear is both a star and a planet gear, rotating with the planet carrier. The sun gear drives the planet gears in a vertical manner, enabling three-dimensional transmission within the planetary gear set. It also has the effect of increasing torque, similar to planetary gears. A double planetary gear transmission mechanism includes a first planet gear, a second planet gear, a chain, a planet carrier, and a gear ring. The first planetary gear and the second planetary gear are rotatably mounted on the planet carrier. The first planetary gear is rotatably mounted on the planet carrier near the gear ring shaft, with its orientation perpendicular to the gear ring surface. The second planetary gear is rotatably mounted on the planet carrier near the gear ring. The first planetary gear and the second planetary gear mesh and transmit power. One side of the second planetary gear meshes with the gear ring, and the other side meshes with the first planetary gear. The first planetary gear and the second planetary gear also include chain drive or shaft drive. The planet carrier and the gear ring shaft are fixedly connected as an integral structure. The central shaft of the gear ring is equipped with a bearing. In this invention, the double planetary gear transmission mechanism can be used as a galaxy model to more intuitively experience the trajectory of galaxy rotation. To meet the usage requirements, this invention provides a double planetary gear transmission mechanism that achieves three-dimensional transmission within the planetary gear set and also has the effect of increasing torque. Attached Figure Description

[0004] Figure 1 This is a structural diagram of an embodiment of the double planetary gear transmission mechanism of this utility model; wherein, 1, first planetary gear; 2, second planetary gear; 3, planetary carrier; 4, gear ring.

[0005] Figure 2This is a structural diagram of Embodiment 2 of the double planetary gear transmission mechanism of this utility model; wherein, 1, first planetary gear; 2, second planetary gear; 3, chain; 4, planetary carrier; 5, gear ring;

[0006] Figure 3 This is a structural diagram of Embodiment 3 of the double planetary gear transmission mechanism of this utility model; wherein, 1, first planetary gear; 2, second planetary gear; 3, chain; 4, planetary carrier; 5, gear ring; 6, transmission shaft;

[0007] Figure 4 This is a structural diagram of Embodiment 4 of the double planetary gear transmission mechanism in this utility model; wherein, 1, first planetary gear; 2, second planetary gear; 4, planetary carrier; 5, gear ring; 6, transmission shaft. Detailed Implementation

[0008] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The purpose of the present invention is to provide a double planetary gear transmission mechanism in which both the sun gear and planet gears are rotatable in a planetary manner within the gear ring, so as to achieve the effect of three-dimensional transmission within the planetary gear set, and at the same time have the effect of increasing torque of planetary gears. In order to make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0009] Example 1

[0010] like Figure 1 As shown, this utility model discloses a double planetary gear transmission mechanism, comprising: a first planetary gear 1; a second planetary gear 2; a planet carrier 3; and a ring gear 4. The first planetary gear 1 is rotatably connected to the planet carrier 3 via a first mounting shaft, with the first planetary gear 1 standing upright on the ring gear surface. The second planetary gear 2 is rotatably connected to the planet carrier 3 via a second mounting shaft. The first planetary gear 1 meshes with the second planetary gear 2, and the second planetary gear 2 meshes with the ring gear 4. In this embodiment, the first planetary gear 1 is the driving gear, the second planetary gear 2 is the driven gear, the ring gear 4 is fixed, and power is input from the first planetary gear 1 and output from the planet carrier 3.

[0011] Example 2

[0012] like Figure 2As shown, this utility model discloses a double planetary gear transmission mechanism, comprising: a first planetary gear 1; a second planetary gear 2; a chain 4; a planetary carrier; and a gear ring. The first planetary gear 1 is rotatably connected to the planetary carrier 4 via a first mounting shaft in a direction perpendicular to the gear ring surface. The second planetary gear 2 is rotatably connected to the planetary carrier 4 via a second mounting shaft. The first planetary gear is rotatably mounted near the circular shaft of the planetary carrier 4, and the second planetary gear 2 is rotatably mounted near the gear ring 5 of the planetary carrier. The first planetary gear and the second planetary gear are driven by a chain. One side of the second planetary gear meshes with the gear ring, and the other side meshes with the chain. The planetary carrier and the circular shaft of the gear ring are fixedly connected as an integral structure, and a bearing is also mounted at the circular shaft of the gear ring. In this embodiment, the first planetary gear 1 and the second planetary gear 2 have the same diameter, which is half the diameter of the gear ring. The first planetary gear 1 is the driving gear, and the second planetary gear 2 is the driven gear. The ring gear 4 is fixed. Power is input from the first planetary gear 1 and output from the planet carrier 4. The power is transmitted from the rotation of the planetary gear 1 to the planetary gear 2 through the chain 3. One side of the planetary gear 2 meshes with the ring gear 5, and the other side meshes with the chain. Since the ring gear 5 is fixed, the planetary gear 2 is axially rotated and connected to the planet carrier 4 for rotational motion. The torque output by the second planetary gear 2, which drives the planet carrier 4, should be 4 times the input torque (assuming no mechanical transmission losses, the transmission ratio is 2 times the power and 2 times the output radius of the planet carrier). Since the first and second planetary gears have the same diameter and are both fixed on the planet carrier, the first planetary gear, the second planetary gear, and the planet carrier will rotate synchronously around the axis as a whole. In this embodiment, the double planetary gear transmission mechanism can operate continuously. Embodiment 2 is an improvement on Embodiment 1. Its advantage over Embodiment 1 is that it increases the output radius of the planet carrier without changing the input radius of the driving gear.

[0013] Example 3

[0014] like Figure 3As shown, this utility model discloses a double planetary gear transmission mechanism, comprising: a first planetary gear 1; a second planetary gear 2; a chain 4; a planetary carrier 5; a gear ring 6; and a drive shaft 7. The first planetary gear 1 is rotatably connected to the planetary carrier 4 via a first mounting shaft in a direction perpendicular to the gear ring surface. The second planetary gear 2 is rotatably connected to the planetary carrier 4 via a second mounting shaft 8. The first planetary gear is rotatably mounted near the circular shaft of the planetary carrier 4, and the second planetary gear 2 is rotatably mounted near the gear ring 5. The first planetary gear drives the drive shaft 6 to rotate via a chain drive, and the drive shaft 6 then drives the planetary gear 2 to rotate along the gear ring. The planetary carrier and the gear ring circular shaft are fixedly connected as a single structure, and a bearing is also mounted at the gear ring circular shaft. In this embodiment, the first planetary gear 1 and the second planetary gear 2 have the same diameter. The first planetary gear 1 is the driving gear, and the second planetary gear 2 is the driven gear. The gear ring 4 is fixed. Power is input from the first planetary gear 1 and output from the planet carrier 4. Power from the planetary gear 1 drives the drive shaft 6 to rotate via a chain drive, and then the drive shaft 6 transmits the power to the planetary gear 2. The planetary gear 2 meshes with the gear ring 5. Since the gear ring 5 is fixed, the planetary gear 2 is forced to rotate axially and connects to the planet carrier 4 to rotate. The second planetary gear 2 is the driven gear, driving the planet carrier 4 to output power. Since the first planetary gear and the second planetary gear have the same diameter and are both fixed on the planet carrier, the first planetary gear, the second planetary gear, and the planet carrier will all rotate synchronously around the axis. In this embodiment, the double planetary gear transmission mechanism can operate continuously. Embodiment 3 is an improvement on Embodiment 2. Its advantage over Embodiment 2 is that it reduces the length of the chain by adding shaft transmission, resulting in a smaller overall structure.

[0015] Example 4

[0016] like Figure 4As shown, this utility model discloses a double planetary gear transmission mechanism, comprising: a first planetary gear 1; a second planetary gear 2; 4. a planetary carrier; 5. a gear ring; and 6. a transmission shaft. The first planetary gear 1 is rotatably connected to the planetary carrier 4 via a first mounting shaft in a direction perpendicular to the gear ring surface. The second planetary gear 2 is rotatably connected to the planetary carrier 4 via a second mounting shaft. The first planetary gear is rotatably mounted near the circular shaft of the planetary carrier 4, and the second planetary gear 2 is rotatably mounted near the gear ring 5 of the planetary carrier. The first planetary gear drives the transmission shaft 6 to rotate via direct meshing transmission, and the transmission shaft 6 then drives the planetary gear 2 to rotate along the gear ring. The planetary carrier and the gear ring circular shaft are fixedly connected as an integral structure, and a bearing is also mounted at the gear ring circular shaft. In this embodiment, the first planetary gear 1 and the second planetary gear 2 have the same diameter. The first planetary gear 1 is the driving gear, the second planetary gear 2 is the driven gear, and the ring gear 4 is fixed. Power is input from the first planetary gear 1 and output from the planet carrier 4. Power from the planetary gear 1 drives the transmission shaft 6 to rotate through meshing transmission, and then the transmission shaft 6 transmits the power to the planetary gear 2. The planetary gear 2 meshes with the ring gear 5. Since the ring gear 5 is fixed, the planetary gear 2 is forced to rotate axially and connects to the planet carrier 4 to rotate. The second planetary gear 2 is the driven gear, driving the planet carrier 4 to output power. Since the first planetary gear and the second planetary gear have the same diameter and are both fixed on the planet carrier, the first planetary gear, the second planetary gear, and the planet carrier will all rotate synchronously around the axis. In this embodiment, the double planetary gear transmission mechanism can operate continuously. Embodiment 4 is an improvement on Embodiment 3. Compared with Embodiment 3, its advantage is that it eliminates the chain drive through direct meshing transmission, making the overall structure smaller and the transmission efficiency higher.

[0017] The above is merely one embodiment of the present utility model and should not be construed as limiting it. The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double planetary gear transmission mechanism, comprising a first planetary gear, a second planetary gear, a planet carrier, and a gear ring; characterized in that, The first planetary gear and the second planetary gear are rotatably mounted on the planet carrier in sequence. The first planetary gear meshes with the second planetary gear, and one side of the second planetary gear meshes with the gear ring while the other side meshes with the first planetary gear.

2. The double planetary gear transmission mechanism as described in claim 1, characterized in that, The first planetary gear is rotatably mounted on the planet carrier near the circular shaft, with its orientation perpendicular to the gear ring surface, and the second planetary gear is rotatably mounted on the planet carrier near the gear ring.

3. The double planetary gear transmission mechanism as described in claim 2, characterized in that, The first planetary gear and the second planetary gear also include a chain drive where one side of the second planetary gear meshes with the gear ring and the other side meshes with the chain.

4. The double planetary gear transmission mechanism as described in claim 3, characterized in that, The first planetary gear and the second planetary gear are further described in that one side of the second planetary gear meshes with the gear ring, and the other side meshes with the first planetary gear through shaft transmission.

5. The double planetary gear transmission mechanism as described in claim 1, characterized in that, The planetary carrier and the central circular shaft of the gear ring are fixedly connected to form an integral planetary carrier structure.

6. The double planetary gear transmission mechanism as described in claim 5, characterized in that, The central circular shaft of the gear ring is also equipped with a bearing.

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