Speed-increasing gear box

Abstract

The utility model belongs to the technical field of gear boxes, and discloses a step-up gear box which comprises a box body, a multi-stage planetary system and an output planetary system. The multi-stage planetary system is arranged in the box body and comprises a middle sun gear rotationally connected to the box body, the output planetary system comprises an output rotating frame, an output gear ring, an output rotating wheel, an output sun gear and an output shaft, the output rotating frame is connected to the middle sun gear and the output gear ring, and the output rotating wheel is rotationally connected to the box body; the middle sun gear is connected to the output rotating stand and meshed with the output gear ring and the output sun gear, the output sun gear is connected to the output shaft, and the rotating axes of the middle sun gear, the output rotating stand, the output gear ring, the output sun gear and the output shaft are coaxially arranged. By means of the arrangement, the speed-increasing gearbox can achieve coaxial power output with the high rotating speed and the high speed ratio.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box technical field especially relates to a speed increasing gear box. BACKGROUND

[0002] Gear box, also known as gearbox or reduction gearbox, is an important component widely used in mechanical transmission system. It mainly transmits power through internal gear combination and changes speed and torque in the transmission process to meet the working requirements of different mechanical equipment.

[0003] With the continuous increase of fan single machine capacity and the continuous improvement of gear box power, the speed and speed ratio requirements of fan transmission chain for gear box are also continuously improved. The existing gear box cannot meet the development needs of fan transmission chain. Therefore, a coaxial output speed increasing gear box with high speed and high speed ratio is needed to solve the above technical problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a speed increasing gear box which can realize coaxial power output with high speed and high speed ratio.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A speed increasing gear box comprises:

[0007] A box body;

[0008] A multi-stage planetary system arranged in the box body, comprising an intermediate sun gear rotatably connected to the box body;

[0009] An output planetary system comprising an output carrier, an output ring gear, an output rotating gear, an output sun gear and an output shaft, the output carrier being connected to the intermediate sun gear and the output ring gear, the output rotating gear being rotatably connected to the box body and being meshingly connected to the output ring gear and the output sun gear, the output sun gear being connected to the output shaft, and the rotation axes of the intermediate sun gear, the output carrier, the output ring gear, the output sun gear and the output shaft being coaxially arranged.

[0010] Optionally, the multi-stage planetary system comprises a plurality of planetary systems connected in sequence and arranged coaxially, and the planetary system close to the output planetary system comprises the intermediate sun gear.

[0011] Optionally, the planetary system comprises a first-stage planetary system, a second-stage planetary system and a third-stage planetary system, and the third-stage planetary system is configured to be connected to the output carrier.

[0012] Optionally, the first planetary system comprises a first rotating frame, a first planetary gear, a first gear ring and a first sun gear, the first rotating frame is rotationally connected in the box body and connected to the first planetary gear, the first planetary gear is meshingly connected to the first gear ring and the first sun gear, and the first sun gear is configured to be connected to the second planetary system.

[0013] Optionally, the second planetary system comprises a second rotating frame, a second planetary gear, a second gear ring and a second sun gear, the second rotating frame is rotationally connected in the box body and connected to the first sun gear and the second planetary gear, the second planetary gear is meshingly connected to the second gear ring and the second sun gear, and the second sun gear is configured to be connected to the third planetary system.

[0014] Optionally, the third planetary system comprises a third rotating frame, a third planetary gear, a third gear ring and the intermediate sun gear, the third rotating frame is rotationally connected in the box body and connected to the second sun gear, and the third planetary gear is meshingly connected to the third gear ring and the intermediate sun gear.

[0015] Optionally, the output planetary system further comprises a plurality of fixed shafts fixedly connected to the box body, the plurality of fixed shafts are parallel to each other and arranged at intervals, and the output rotating wheel is provided with a plurality of output rotating wheels, and the plurality of output rotating wheels are rotationally connected to the plurality of fixed shafts in one-to-one correspondence.

[0016] Optionally, the output sun gear and the output shaft are connected through a spline.

[0017] Optionally, the box body is provided with a connecting port, and the inside of the box body is communicated with the outside through the connecting port.

[0018] Optionally, the output rotating frame is provided with a tooth portion arranged opposite to the connecting port, and the tooth portion is configured to be meshingly connected to an external gear shaft.

[0019] The utility model discloses the beneficial effect of the following:

[0020] The utility model provides a kind of speed increasing gear box, it includes box, multistage planetary system and output planetary system. Multistage planetary system is arranged in box, to realize the step-by-step speed increasing of power. By rotating the intermediate sun gear connected in box, drive output planetary system rotation. Output planetary system includes output trolley, output gear ring, output rotating wheel, output sun gear and output shaft, output trolley is connected to intermediate sun gear and output gear ring, and the power of intermediate sun gear is transmitted to output gear ring by output trolley, output rotating wheel is rotatably connected to box, and is engagedly connected to output gear ring and output sun gear, and then power is transmitted to output sun gear, by output sun gear is connected to output shaft, realizes the final output of power. The rotation axis of intermediate sun gear, output trolley, output gear ring, output sun gear and output shaft is coaxially arranged. By above-mentioned setting, the speed increasing gear box of the application can realize coaxial power output of high speed and high speed ratio. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the cross-sectional view of the speed increasing gear box provided by the utility model embodiment;

[0022] Figure 2 It is the cross-sectional view of the output planetary system provided by the utility model embodiment.

[0023] In the figure:

[0024] 1, box;11, connecting port;2, multistage planetary system;21, first stage planetary system;211, first stage trolley;212, first stage planetary wheel;213, first stage gear ring;214, first stage sun gear;22, second stage planetary system;221, second stage trolley;222, second stage planetary wheel;223, second stage gear ring;224, second stage sun gear;23, third stage planetary system;231, third stage trolley;232, third stage planetary wheel;233, third stage gear ring;234, intermediate sun gear;3, output planetary system;31, output trolley;32, output gear ring;33, output rotating wheel;34, output sun gear;35, output shaft;36, fixed shaft. DETAILED DESCRIPTION

[0025] The utility model is further explained in detail in connection with drawing and embodiment below. It can be understood that the specific embodiment described here is only used to explain the utility model, and is not limited to the utility model. In addition, it needs to be explained that, for convenient description, only part relevant to the utility model is shown in drawing, not all structures.

[0026] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two element's mutual action relation.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0027] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0028] In the description of the embodiment, the terms "on", "under", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0029] As Figure 1 And Figure 2 As shown in the utility model provides a kind of speed increasing gear box, it includes box 1, multistage planetary system 2 and output planetary system 3.Multistage planetary system 2 is arranged in box 1, including the intermediate sun gear 234 rotationally connected to box 1, and output planetary system 3 includes output trolley 31, output gear ring 32, output rotating wheel 33, output sun gear 34 and output shaft 35, output trolley 31 is connected to intermediate sun gear 234 and output gear ring 32, output rotating wheel 33 is rotationally connected to box 1, and is meshedly connected to output gear ring 32 and output sun gear 34, output sun gear 34 is connected to output shaft 35, and the rotation axis of intermediate sun gear 234, output trolley 31, output gear ring 32, output sun gear 34 and output shaft 35 is coaxially arranged.

[0030] In this embodiment, a multi-stage planetary gear system 2 is disposed within the housing 1 to achieve gradual acceleration of power. The output planetary gear system 3 is driven to rotate by rotating the intermediate sun gear 234 connected to the housing 1. The output planetary gear system 3 includes an output rotating frame 31, an output gear ring 32, an output rotating wheel 33, an output sun gear 34, and an output shaft 35. The output rotating frame 31 is connected to the intermediate sun gear 234 and the output gear ring 32, transmitting power from the intermediate sun gear 234 to the output gear ring 32. The output rotating wheel 33 is rotatably connected to the housing 1 and meshes with the output gear ring 32 and the output sun gear 34, thus transmitting power to the output sun gear 34. The output sun gear 34 is connected to the output shaft 35, achieving the final power output. The rotation axes of the intermediate sun gear 234, the output rotating frame 31, the output gear ring 32, the output sun gear 34, and the output shaft 35 are all coaxially arranged. Through the above arrangement, the speed-increasing gearbox of this embodiment can achieve coaxial power output with high speed and high speed ratio.

[0031] The specific structure of the speed-increasing gearbox is explained below:

[0032] Specifically, such as Figure 1 and Figure 2 As shown, the multi-level planetary system 2 comprises multiple planetary systems connected sequentially and coaxially, with the planetary system closest to the output planetary system 3 including a central sun gear 234. It can be understood that each level of the planetary system includes planetary gears, sun gears, and ring gears. Power is transmitted through the meshing of these planetary gears, sun gears, and ring gears, gradually increasing the speed of power transmission. Then, the power is transmitted to the output planetary system 3 via the central sun gear 234 in the planetary system closest to the output planetary system 3, achieving high-speed power output.

[0033] More specifically, in this embodiment, there are three planetary systems, which not only meet the requirements for effective power transmission and speed ratio, but also reduce the overall weight of the speed-increasing gearbox. In other embodiments, the multi-stage planetary system 2 includes four planetary systems; that is, as long as the above functions can be achieved, the specific number of planetary systems is not limited here.

[0034] Specifically, in this embodiment, the planetary system includes a primary planetary system 21, a secondary planetary system 22, and a tertiary planetary system 23. These three systems are sequentially connected and coaxially arranged. The tertiary planetary system 23 is configured to connect to the output rotor 31. The speed-increasing gearbox also includes an input shaft, with the primary planetary system 21 configured to connect to it. It can be understood that the input shaft, through the speed-increasing mechanisms of the primary planetary system 21, secondary planetary system 22, tertiary planetary system 23, and the output planetary system 3, achieves high-speed, high-ratio power output.

[0035] Specifically, the first planetary system 21 comprises a first carrier 211, a first planetary gear 212, a first ring gear 213 and a first sun gear 214, the first carrier 211 is rotationally connected in the box 1 and connected to the first planetary gear 212, the first planetary gear 212 is meshingly connected to the first ring gear 213 and the first sun gear 214, and the first sun gear 214 is configured to be connected to the second planetary system 22. Among them, the first carrier 211 is used to connect the input shaft. When the input shaft rotates, the first carrier 211 rotates with it. Since the first carrier 211 is connected to the first planetary gear 212, the rotation of the first carrier 211 drives the rotation of the first planetary gear 212, and simultaneously transmits power to the first ring gear 213 and the first sun gear 214. Since the first sun gear 214 is connected to the second planetary system 22, the power is transmitted to the second planetary system 22, so that the power is preliminarily speeded up during transmission.

[0036] More specifically, the second planetary system 22 comprises a second carrier 221, a second planetary gear 222, a second ring gear 223 and a second sun gear 224, the second carrier 221 is rotationally connected in the box 1 and connected to the first sun gear 214 and the second planetary gear 222, the second planetary gear 222 is meshingly connected to the second ring gear 223 and the second sun gear 224, and the second sun gear 224 is configured to be connected to the third planetary system 23. When the first sun gear 214 rotates, the second carrier 221 rotates with it. Since the second carrier 221 is connected to the second planetary gear 222, the rotation of the second carrier 221 drives the rotation of the second planetary gear 222, and simultaneously transmits power to the second ring gear 223 and the second sun gear 224, and then transmits power to the third planetary system 23 through the second sun gear 224, thereby further speeding up the power during transmission.

[0037] More specifically, the third planetary system 23 comprises a third carrier 231, a third planetary gear 232, a third ring gear 233 and an intermediate sun gear 234, the third carrier 231 is rotationally connected in the box 1 and connected to the second sun gear 224 and the third planetary gear 232, the third planetary gear 232 is meshingly connected to the third ring gear 233 and the intermediate sun gear 234. When the second sun gear 224 rotates, the third carrier 231 rotates with it. The rotation of the third carrier 231 drives the rotation of the third planetary gear 232, and simultaneously transmits power to the third ring gear 233 and the intermediate sun gear 234. Since the intermediate sun gear 234 is connected to the output carrier 31, the power of the intermediate sun gear 234 is transmitted to the output ring gear 32 through the output carrier 31. The output rotating wheel 33 is rotationally connected to the box 1 and meshingly connected to the output ring gear 32 and the output sun gear 34, thereby smoothly transmitting power to the output sun gear 34 through the output rotating wheel 33. The output sun gear 34 is connected to the output shaft 35, thereby ensuring the final output of the power, so as to realize the high rotation speed and high speed ratio output of the power.

[0038] Specifically, the output planetary system 3 further comprises a plurality of fixed shafts 36 fixedly connected to the box 1, thereby providing stable support for the output rotating wheels 33. The plurality of fixed shafts 36 are parallel and spaced apart from each other, and the output rotating wheels 33 are provided in plurality, and the plurality of output rotating wheels 33 are one-to-one rotatably connected to the plurality of fixed shafts 36, thereby reducing energy loss in the process of power transmission and improving transmission efficiency.

[0039] Specifically, the output sun gear 34 and the output shaft 35 are connected through the spline, which can ensure the floating of the output sun gear 34.

[0040] Specifically, the box 1 is provided with a connecting port 11, and the inside of the box 1 is communicated with the outside through the connecting port 11, so that the corresponding components inside the box 1 can be conveniently connected with external components, thereby enhancing the expansibility and flexibility of the speed increasing gear box.

[0041] More specifically, the output rotating frame 31 is provided with a tooth portion oppositely arranged to the connecting port 11, and the tooth portion is configured to be engagedly connected to an external gear shaft, and a mechanical pump gear or a disc gear can be externally connected.

[0042] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A speed increasing gearbox, characterized in that The utility model relates to a kind of multi-stage planetary gearboxes, including: Box (1); Multi-stage planetary system (2) is arranged in the box (1), including rotationally connected to the intermediate sun gear (234) of the box (1); Output planetary system (3) includes output swing frame (31), output ring gear (32), output rotating wheel (33), output sun gear (34) and output shaft (35), the output swing frame (31) is connected to the intermediate sun gear (234) and the output ring gear (32), the output rotating wheel (33) is rotationally connected to the box (1), and is meshedly connected to the output ring gear (32) and the output sun gear (34), the output sun gear (34) is connected to the output shaft (35), and the rotation axes of the intermediate sun gear (234), the output swing frame (31), the output ring gear (32), the output sun gear (34) and the output shaft (35) are coaxially arranged.

2. The speed increasing gearbox of claim 1, wherein, The multi-stage planetary system (2) includes a plurality of coaxially arranged planetary systems connected in sequence, and the planetary system close to the output planetary system (3) includes the intermediate sun gear (234).

3. The speed increasing gearbox of claim 2, wherein, The planetary system includes a first-stage planetary system (21), a second-stage planetary system (22) and a third-stage planetary system (23), and the third-stage planetary system (23) is configured to be connected to the output swing frame (31).

4. The speed increasing gearbox of claim 3, wherein, The first-stage planetary system (21) includes a first-stage swing frame (211), a first-stage planetary gear (212), a first-stage ring gear (213) and a first-stage sun gear (214), the first-stage swing frame (211) is rotationally connected in the box (1) and connected to the first-stage planetary gear (212), the first-stage planetary gear (212) is meshedly connected to the first-stage ring gear (213) and the first-stage sun gear (214), and the first-stage sun gear (214) is configured to be connected to the second-stage planetary system (22).

5. The speed increasing gearbox of claim 4, wherein, The second-stage planetary system (22) includes a second-stage swing frame (221), a second-stage planetary gear (222), a second-stage ring gear (223) and a second-stage sun gear (224), the second-stage swing frame (221) is rotationally connected in the box (1) and connected to the first-stage sun gear (214) and the second-stage planetary gear (222), the second-stage planetary gear (222) is meshedly connected to the second-stage ring gear (223) and the second-stage sun gear (224), and the second-stage sun gear (224) is configured to be connected to the third-stage planetary system (23).

6. The speed increasing gearbox of claim 5, wherein, The third-stage planetary system (23) includes a third-stage swing frame (231), a third-stage planetary gear (232), a third-stage ring gear (233) and the intermediate sun gear (234), the third-stage swing frame (231) is rotationally connected in the box (1) and connected to the second-stage sun gear (224), the third-stage planetary gear (232) is meshedly connected to the third-stage ring gear (233) and the intermediate sun gear (234).

7. The speed increasing gearbox of claim 1, wherein, The output planetary system (3) further comprises a plurality of fixed shafts (36) fixedly connected to the box (1), the plurality of fixed shafts (36) are parallel and spaced apart, and the output rotating wheels (33) are provided in plurality, and the plurality of output rotating wheels (33) are one-to-one rotatingly connected to the plurality of fixed shafts (36).

8. The speed increasing gearbox of claim 1, wherein, The output sun gear (34) and the output shaft (35) are connected through a spline.

9. A speed increasing gearbox according to any of claims 1-8, characterized in that The box (1) is provided with a connecting port (11), and the inside of the box (1) is communicated with the outside through the connecting port (11).

10. The speed increasing gearbox of claim 9, wherein, The output rotating frame (31) is provided with a tooth portion opposite to the connecting port (11), and the tooth portion is configured to be engagedly connected to an external gear shaft.

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