Combined planetary gear transmission

Abstract

The utility model relates to the technical field of planetary gears, and discloses a combined type planetary gear transmission which comprises a small sun gear, a first hollow shaft installed in the middle of the small sun gear, a first rotating handle installed at the tail end of the first hollow shaft, a first planetary gear installed outside the small sun gear in a surrounding mode, and a first rotating rod installed in the middle of the first planetary gear. A second rotating handle is mounted at the tail end of the second hollow shaft; a second rotating rod is mounted on the inner wall of the first hollow shaft; a large sun gear is mounted at one end of the second rotating rod; a third rotating handle is mounted at the other end of the second rotating rod; a second planetary gear is installed outside the large sun gear in a surrounding mode, and a gear ring is installed outside the second planetary gear. According to the planetary gear transmission, all the gears can rotate independently, and due to the independent rotation and free combination of all the gears, the planetary gear transmission has high flexibility and adjustability.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gears, in particular to a combined planetary gear transmission. Background Art

[0002] Planetary gear transmission is a type of gearbox, which consists of a planetary ring gear, a sun gear, a planetary gear (also known as a satellite gear) and a gear axle. According to the motion relationship between the ring gear, sun gear and planetary gear, it can realize the input shaft and the output shaft to be separated from the rigid transmission relationship, the input shaft and the output shaft to drive in the same or reverse direction and the input and output shaft transmission ratio to change. It is widely used in land, sea, aviation and other transportation vehicles.

[0003] According to the search, Chinese patent document, announcement number: CN208651595U, discloses a combined planetary carrier and planetary gear transmission. The first side plate assembly and the second side plate assembly are independently processed and manufactured, and the planetary shaft and the fixed shaft are both arranged on the first side plate, and a support platform and a fixing hole matched with the fixed shaft are arranged on the second side plate, which can enhance the structural strength, improve the pressure resistance, better maintain the mutual position relationship between the first side plate and the second side plate, and reduce the difficulty of assembly. The combined first planetary carrier and the second planetary carrier adopted by the planetary gear transmission reduce the difficulty of assembly, enhance the structural strength, and work more stably and reliably. However, this combined planetary carrier and planetary gear transmission simply adopts a single planetary gear, and each gear cannot rotate independently, so there are fewer gear combinations that can be rotated during use, which leads to a limited scope of application. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a combined planetary gear transmission, which has the advantages of simple installation, convenient operation, good performance, low cost, flexible combination of various gears, and a wide range of applications, thereby solving the above technical problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a combined planetary gear transmission, comprising a small sun gear, a first hollow shaft is installed in the middle of the small sun gear, a first rotating handle is installed at the end of the first hollow shaft, a first planetary gear is installed around the outside of the small sun gear, a first rotating rod is installed in the middle of the first planetary gear, a first planetary carrier is installed at the top of the first rotating rod, a second hollow shaft is installed in the middle of the first planetary carrier, a second rotating handle is installed at the end of the second hollow shaft, a second rotating rod is installed on the inner wall of the first hollow shaft, a large sun gear is installed at one end of the second rotating rod, a third rotating handle is installed at the other end of the second rotating rod, a second planetary gear is installed around the outside of the large sun gear, and a gear ring is installed on the outside of the second planetary gear.

[0008] Preferably, the second planetary gear, the large sun gear, the first planetary gear and the ring gear are meshed.

[0009] Through the above technical solution, the number of teeth and module of the gears are accurately calculated to ensure that the meshing between the gears can produce the expected rotation direction, which enables the speed combination system to accurately transmit power and rotation direction as required, and by adjusting the meshing position of the first planetary gear and the ring gear, different speeds and torque outputs can be achieved, so that the speed combination system has adjustable output characteristics and provides different speeds and torque outputs according to requirements.

[0010] Preferably, a fixing rod is installed in the middle of the second planetary gear, a second planetary carrier is installed at the end of the fixing rod, an output rod is installed on the surface of the second planetary carrier, and the second planetary carrier is connected to the first planetary gear and the second planetary gear through screw threads.

[0011] Through the above technical solution, due to the existence of the output rod, the planetary gear transmission can be easily connected to other equipment. The output rod can provide a standard interface or connection method, so that the transmission can be connected to the transmission system, mechanical device or other power equipment, providing more flexibility and adaptability. Through the output rod, the reverse gear function can also be realized, and the power can be transmitted in reverse to the output end, so that the vehicle or equipment can move backward, providing more operating options and convenience.

[0012] Preferably, the large sun gear, the small sun gear, the first planetary gear and the second planetary gear can all rotate independently.

[0013] Through the above technical solution, since each gear can rotate independently and can be freely combined, more gear options can be provided. By selecting a suitable gear combination, a variety of different speed ratios can be achieved to meet different driving needs and working conditions. Due to the independent rotation and free combination of each gear, the planetary gear transmission has high flexibility and adjustability, and the gear combination can be adjusted according to actual needs and driving conditions to obtain the best transmission effect and performance.

[0014] Preferably, a one-way clutch is installed on the inner wall of the second hollow shaft, and the one-way clutch is connected to the outside of the first hollow shaft.

[0015] Through the above technical solution, the presence of the one-way clutch can provide a new combination gear, so that the small sun gear installed at one end of the first hollow shaft and the first planetary gear installed at one end of the second hollow shaft can control their rotation, and different transmission paths and speed ratios can be selected according to needs to provide more speed change options. By controlling the one-way clutch, different transmission modes and functions can be achieved, and the input power can be transmitted to the small sun gear and the first planetary gear, or the output power can be transmitted to the second hollow shaft through the first planetary gear. This flexibility and versatility allows the transmission to adapt to different working conditions and requirements.

[0016] Preferably, the first planet carrier is connected to the first planetary gear and the second planetary gear via screw threads.

[0017] Through the above technical solution, the screw threaded connection allows the first planetary carrier, the second planetary carrier and the first planetary gear and the second planetary gear to be relatively easy to disassemble and reassemble. Due to the existence of the screw threaded connection, the planetary carrier and the planetary gear can be relatively easily replaced to achieve different transmission ratios, and the screw threaded connection provides a flexibility, so that different planetary carrier and planetary gear combinations can be used to meet specific transmission requirements.

[0018] Compared with the prior art, the utility model provides a combined planetary gear transmission, which has the following beneficial effects:

[0019] 1. The utility model can provide more gear options by allowing each gear to rotate independently and be freely combined. By selecting a suitable gear combination, a variety of different speed ratios can be achieved to meet different driving needs and working conditions. Due to the independent rotation and free combination of each gear, the planetary gear transmission has high flexibility and adjustability. The gear combination can be adjusted according to actual needs and driving conditions to obtain the best transmission effect and performance.

[0020] 2. The utility model can provide a new combined gear position through the presence of a one-way clutch, so that the small sun gear installed at one end of the first hollow shaft and the first planetary gear installed at one end of the second hollow shaft can control their rotation, and different transmission paths and speed ratios can be selected according to needs, providing more speed change options. By controlling the one-way clutch, different transmission modes and functions can be achieved, and the input power can be transmitted to the small sun gear and the first planetary gear, or the output power can be transmitted to the second hollow shaft through the first planetary gear. This flexibility and versatility allows the transmission to adapt to different working conditions and requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model from above;

[0023] Figure 3 It is a schematic diagram of the small sun gear, the first planet carrier and other components of the utility model structure.

[0024] Among them: 1. small sun gear; 2. first hollow shaft; 3. first rotating handle; 4. first planetary gear; 5. first rotating rod; 6. first planetary carrier; 7. second hollow shaft; 8. second rotating handle; 9. second rotating rod; 10. large sun gear; 11. third rotating handle; 12. second planetary gear; 13. ring gear; 14. fixed rod; 15. second planetary carrier; 16. output rod; 17. one-way clutch. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3A combined planetary gear transmission comprises a small sun gear 1, a first hollow shaft 2 is installed in the middle of the small sun gear 1, a first rotating handle 3 is installed at the end of the first hollow shaft 2, a first planetary gear 4 is installed around the outside of the small sun gear 1, a first rotating rod 5 is installed in the middle of the first planetary gear 4, a first planetary carrier 6 is installed at the top of the first rotating rod 5, a second hollow shaft 7 is installed in the middle of the first planetary carrier 6, a second rotating handle 8 is installed at the end of the second hollow shaft 7, a second rotating rod 9 is installed on the inner wall of the first hollow shaft 2, a large sun gear 10 is installed at one end of the second rotating rod 9, a third rotating handle 11 is installed at the other end of the second rotating rod 9, a second planetary gear 12 is installed around the outside of the large sun gear 10, and a gear ring 13 is installed on the outside of the second planetary gear 12.

[0027] Specifically, the second planetary gear 12, the large sun gear 10, the first planetary gear 4 and the ring gear 13 are meshed. The advantage is that the number of teeth and the module of the gears are accurately calculated to ensure that the meshing between the gears can produce the expected rotation direction, which enables the speed combination system to accurately transmit power and rotation direction as required, and by adjusting the meshing position of the first planetary gear 4 and the ring gear 13, different speeds and torque outputs can be achieved, so that the speed combination system has adjustable output characteristics and provides different speeds and torque outputs according to requirements.

[0028] Specifically, a fixing rod 14 is installed in the middle of the second planetary gear 12, a second planetary carrier 15 is installed at the end of the fixing rod 14, and an output rod 16 is installed on the surface of the second planetary carrier 15. The advantage is that due to the existence of the output rod 16, the planetary gear transmission can be easily connected with other devices, and the output rod 16 can provide a standard interface or connection method, so that the transmission can be connected with a transmission system, a mechanical device or other power equipment, providing more flexibility and adaptability, and through the output rod 16, the reverse gear function can also be realized, and the power can be reversely transmitted to the output end, so that the vehicle or equipment can move backward, providing more operation options and convenience.

[0029] Specifically, the large sun gear 10, the small sun gear 1, the first planetary gear 4 and the second planetary gear 12 can all rotate independently. The advantage is that since each gear can rotate independently and can be freely combined, more gear options can be provided. By selecting a suitable gear combination, a variety of different speed ratios can be achieved to meet different driving needs and working conditions. Due to the independent rotation and free combination of each gear, the planetary gear transmission has high flexibility and adjustability, and the gear combination can be adjusted according to actual needs and driving conditions to obtain the best transmission effect and performance.

[0030] Specifically, a one-way clutch 17 is installed on the inner wall of the second hollow shaft 7, and the one-way clutch 17 is connected to the outside of the first hollow shaft 2. The advantage is that the existence of the one-way clutch 17 can provide a new combined gear, so that the small sun gear 1 installed at one end of the first hollow shaft 2 and the first planetary gear 4 installed at one end of the second hollow shaft 7 can control their rotation, and different transmission paths and speed ratios can be selected according to needs, providing more speed change options. By controlling the one-way clutch 17, different transmission modes and functions can be achieved, and the input power can be transmitted to the small sun gear 1 and the first planetary gear 4, or the output power can be transmitted to the second hollow shaft 7 through the first planetary gear 4. This flexibility and versatility allow the transmission to adapt to different working conditions and requirements.

[0031] Specifically, the first planet carrier 6, the second planet carrier 15, the first planet gear 4, and the second planet gear 12 are all connected by screw threads. The advantage is that the screw thread connection allows the first planet carrier 6, the second planet carrier 15, the first planet gear 4, and the second planet gear 12 to be relatively easy to disassemble and reassemble. Due to the existence of the screw thread connection, the planet carrier and the planet gear can be relatively easily replaced to achieve different transmission ratios, and the screw thread connection provides a flexibility, so that different planet carrier and planet gear combinations can be used to meet specific transmission requirements.

[0032] When in use, the second rotating rod 9 installed on the upper surface of the large sun gear 10 passes through the first hollow shaft 2 installed in the middle of the small sun gear 1, and then the second hollow shaft 7 is sleeved on the outside of the first hollow shaft 2, and the one-way clutch 17 is installed on the inner wall of the second hollow shaft 7, and the second rotating rod 9, the first hollow shaft 2 and the end of the second hollow shaft 7 are installed with a rotating handle, and then the first planetary carrier 6 is threadedly connected to one end of the second hollow shaft 7, and the first planetary gear 4 is installed at the bottom of the first planetary carrier 6, and then the second planetary gear 12 is installed on the outside of the first planetary gear 4 and the large sun gear 10 and meshed with them, and the ring gear 13 is installed on the outside of the second planetary gear 12 to mesh with the second planetary gear 12, and finally the fixing rod 14 is installed in the middle of the second planetary gear 12, and the second planetary carrier 15 is threadedly connected to the end of the fixing rod 14. That is, and through this combination, the planetary gear transmission has multiple adjustable gears. In the first gear, the engine drives the torque converter to drive the small sun gear 1 to rotate, and the first planetary gear 4 group is controlled by the one-way clutch 17 to lock it, and the ring gear 13 is used as the output to provide driving force to the wheel; in the second gear, the first planetary gear 4 can rotate freely, the large sun gear 10 is prohibited from moving, and the small sun gear 1 is used as the input to drive the ring gear 13 to rotate; in the third gear, the gear ratio is one, the small sun gear 1, the first planetary gear 4 and the second planetary gear 12 are locked as a whole and rotate as a whole; in the fourth gear, the first planetary carrier 6 is used as the input, and the large sun gear 10 remains stationary, and the ring gear 13 is still used as the output to drive the wheel; in the fifth gear, the fifth gear is the reverse gear, and the second planetary carrier 15 is used as the input to reversely transmit the power to the output ring gear 13.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined planetary gear transmission, comprising a small sun gear (1), characterized in that: A first hollow shaft (2) is installed in the middle of the small sun gear (1), a first rotating handle (3) is installed at the end of the first hollow shaft (2), a first planetary gear (4) is installed around the outside of the small sun gear (1), a first rotating rod (5) is installed in the middle of the first planetary gear (4), a first planet carrier (6) is installed at the top of the first rotating rod (5), a second hollow shaft (7) is installed in the middle of the first planet carrier (6), a second rotating handle (8) is installed at the end of the second hollow shaft (7), a second rotating rod (9) is installed on the inner wall of the first hollow shaft (2), a large sun gear (10) is installed at one end of the second rotating rod (9), a third rotating handle (11) is installed at the other end of the second rotating rod (9), a second planetary gear (12) is installed around the outside of the large sun gear (10), and a gear ring (13) is installed on the outside of the second planetary gear (12).

2. A combined planetary gear transmission according to claim 1, characterized in that: The second planetary gear (12), the large sun gear (10), the first planetary gear (4) and the ring gear (13) are meshed.

3. A combined planetary gear transmission according to claim 1, characterized in that: A fixing rod (14) is installed in the middle of the second planetary gear (12), a second planetary carrier (15) is installed at the end of the fixing rod (14), an output rod (16) is installed on the surface of the second planetary carrier (15), and the second planetary carrier (15) is connected to the first planetary gear (4) and the second planetary gear (12) through screw threads.

4. A combined planetary gear transmission according to claim 1, characterized in that: The large sun gear (10), the small sun gear (1), the first planetary gear (4) and the second planetary gear (12) can all rotate independently.

5. A combined planetary gear transmission according to claim 1, characterized in that: A one-way clutch (17) is installed on the inner wall of the second hollow shaft (7), and the one-way clutch (17) is connected to the outside of the first hollow shaft (2).

6. A combined planetary gear transmission according to claim 1, characterized in that: The first planet carrier (6) is connected to the first planet gear (4) and the second planet gear (12) via screw threads.

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