Planetary gear set structure

Abstract

The utility model belongs to the technical field of planetary gears, and particularly relates to a planetary gear set structure which comprises a planetary gear mechanism, a circulating mechanism and a transmission mechanism, the planetary gear mechanism comprises a shell, a planetary gear set, a first transmission shaft, a second transmission shaft and a pipe opening, and the planetary gear set is arranged in the shell. The upper end of the planetary gear set is connected with a first transmission shaft, the lower end of the planetary gear set is connected with a second transmission shaft, and pipe openings are formed in the two sides of the top of the shell. The circulating mechanism is connected with the pipe opening, the circulating mechanism comprises a lubricating oil tank, a conveying pipeline and a vertical pipe, the circulating mechanism is communicated with the shell, lubricating oil circulates in the lubricating oil tank and the shell through the conveying pipeline, the gears are lubricated, meanwhile, heat generated by friction between the gears is taken away, and the situation that the service life of the gears is affected by too high temperature is avoided.

Description

Technical Field

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

[0002] Planetary gears are gear systems that can rotate around their own axes like fixed-axis gears, but their axes can also rotate around the axes of other gears along with the planet carrier. Rotation around their own axes is called "rotation", and rotation around the axes of other gears is called "revolution", just like the planets in the solar system, hence the name.

[0003] Compared with ordinary gear transmission, planetary gear transmission has many unique advantages. The most notable feature is that power can be split when transmitting power, and the input shaft and output shaft are on the same horizontal line. Therefore, planetary gear transmission has been widely used in reducers, speed increasers and speed change devices in various mechanical transmission systems. In particular, it has been widely used in aircraft and vehicles (especially heavy vehicles) because of its "high load and large transmission ratio" characteristics. Planetary gears also play a big role in the torque transmission of the engine. Since the speed and torque of the engine are very different from the driving requirements of the road, the above characteristics of the planetary gear can be used to convert the engine power to the drive wheels appropriately. The automatic transmission in the car also uses these characteristics of the planetary gear to change the relative motion relationship of each component through the clutch and brake to obtain different transmission ratios.

[0004] When the planetary gears are working, friction is generated when the gears mesh with each other. When the gears rotate at high speed, heat accumulates continuously, which will cause the temperature to be too high and affect the service life of the gears. For this reason, the present application proposes a planetary gear set structure. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above problems and / or problems existing in the existing planetary gear set structure, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a planetary gear set structure, in which a circulation mechanism is connected to the housing, and lubricating oil flows through the lubricating oil tank and the inside of the housing through a delivery pipeline, lubricating the gears while taking away the heat generated by the friction between the gears to prevent the gears from being overheated and affecting their service life. In order to solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solutions:

[0008] A planetary gear set structure, comprising:

[0009] A planetary gear mechanism, comprising a housing, a planetary gear set, a first transmission shaft, a second transmission shaft and a pipe opening, wherein the housing is provided with a planetary gear set, the upper end of the planetary gear set is connected to the first transmission shaft, the lower end of the planetary gear set is connected to the second transmission shaft, and pipe openings are provided on both sides of the top of the housing;

[0010] A circulation mechanism connected to the pipe orifice, the circulation mechanism comprising a lubricating oil tank, a delivery pipeline and a vertical pipe, a delivery pipeline connected to the pipe orifice is arranged on the side of the lubricating oil tank, and a vertical pipe is arranged on one side of the delivery pipeline;

[0011] The transmission mechanism is arranged on the vertical pipe.

[0012] As a preferred scheme of a planetary gear set structure described in the utility model, wherein: the transmission mechanism includes a rotating shaft, blades, a driven gear and a driving gear, the rotating shaft is rotatably connected to the vertical tube, the blades are arranged at the lower end of the rotating shaft, the driven gear is arranged at the upper end of the rotating shaft, and the driving gear meshing with the driven gear is arranged on the first transmission shaft.

[0013] As a preferred solution of the planetary gear set structure described in the utility model, a rotating hole is opened on the top of the vertical tube, and a first oil seal is arranged at the connection position between the rotating shaft and the rotating hole.

[0014] As a preferred solution of the planetary gear set structure described in the utility model, the lubricating oil tank adopts a transparent box body, and a liquid level identification scale is arranged on the outside of the lubricating oil tank.

[0015] As a preferred solution of the planetary gear set structure described in the utility model, wherein: a refrigeration component is provided on the side wall of the lubricating oil tank, and the refrigeration component adopts a semiconductor refrigeration sheet.

[0016] As a preferred solution of the planetary gear set structure described in the utility model, a second oil seal is provided between the housing and the first transmission shaft, and between the housing and the second transmission shaft.

[0017] As a preferred solution of the planetary gear set structure described in the utility model, the delivery pipeline is a transparent pipeline.

[0018] Compared with the prior art: the utility model connects the circulation mechanism on the shell, and the lubricating oil flows between the lubricating oil tank and the shell through the delivery pipeline. While lubricating the gears, it takes away the heat generated by the friction between the gears to avoid excessive temperature affecting the service life of the gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the external structure of the planetary gear mechanism of the utility model;

[0023] Figure 4 This is a schematic diagram of the circulation mechanism structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the transmission mechanism structure of the utility model.

[0025] In the figure: 100 planetary gear mechanism, 110 housing, 120 planetary gear set, 130 first transmission shaft, 140 second transmission shaft, 150 pipe mouth, 200 circulation mechanism, 210 lubricating oil tank, 220 delivery pipeline, 230 vertical pipe, 240 refrigeration component, 300 transmission mechanism, 310 rotating shaft, 320 blades, 330 driven gear, 340 driving gear. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The utility model provides a planetary gear set structure, which is connected to a circulation mechanism on the housing. The lubricating oil flows through the lubricating oil tank and the inside of the housing through a delivery pipeline, lubricating the gears while taking away the heat generated by the friction between the gears to avoid excessive temperature affecting the service life of the gears. Please refer to Figure 1-Figure 5 , including: a planetary gear mechanism 100, a circulation mechanism 200 and a transmission mechanism 300.

[0031] The planetary gear mechanism 100 includes a housing 110, a planetary gear set 120, a first transmission shaft 130, a second transmission shaft 140 and a nozzle 150. The housing 110 is provided with the planetary gear set 120. The upper end of the planetary gear set 120 is connected to the first transmission shaft 130, and the lower end of the planetary gear set 120 is connected to the second transmission shaft 140. The nozzles 150 are provided on both sides of the top of the housing 110.

[0032] Among them, the planetary gear set 120 adopts a conventional planetary gear reducer structure, the first transmission shaft 130 and the second transmission shaft 140 are used to transmit rotational power, the shell 110 seals the mechanism, and lubricating oil is added into the shell 110 through the pipe mouth 150 to lubricate the planetary gear set 120.

[0033] The circulation mechanism 200 is connected to the nozzle 150, and the circulation mechanism 200 includes a lubricating oil tank 210, a delivery pipeline 220 and a vertical pipe 230. The delivery pipeline 220 connected to the nozzle 150 is arranged on the side of the lubricating oil tank 210, and a vertical pipe 230 is arranged on one side of the delivery pipeline 220;

[0034] The delivery pipeline 220 is a transparent pipeline, which is convenient for observing the oil flow status. The lubricating oil tank 210 is filled with lubricating oil, and the lubricating oil flows through the delivery pipeline 220 .

[0035] The transmission mechanism 300 is disposed on the vertical pipe 230 , and the transmission mechanism 300 drives the lubricating oil to circulate, so that the lubricating oil circulates in the housing 110 and the lubricating oil tank 210 through the delivery pipeline 220 .

[0036] Specifically, the transmission mechanism 300 includes a rotating shaft 310, a blade 320, a driven gear 330 and a driving gear 340. The rotating shaft 310 is rotatably connected to the vertical pipe 230. The blade 320 is arranged at the lower end of the rotating shaft 310, and the driven gear 330 is arranged at the upper end of the rotating shaft 310. The driving gear 340 meshing with the driven gear 330 is arranged on the first transmission shaft 130.

[0037] Among them, the blades 320 are evenly distributed fan blades, the first transmission shaft 130 synchronously drives the driving gear 340 to rotate, the driving gear 340 drives the driven gear 330 to rotate, the driven gear 330 synchronously drives the rotating shaft 310 to rotate, and the rotating shaft 310 drives the blades 320 to rotate.

[0038] Since the rotating shaft 310 is rotatably connected to the vertical pipe 230, a rotating hole is opened on the top of the vertical pipe 230 to provide a connection space, and a first oil seal is provided at the connection position between the rotating shaft 310 and the rotating hole to avoid oil leakage.

[0039] In order to facilitate observation of the remaining lubricating oil, the lubricating oil tank 210 adopts a transparent box body, and a liquid level identification scale is arranged on the outside of the lubricating oil tank 210, so that the remaining lubricating oil can be observed through the lubricating oil tank 210 and the liquid level identification scale.

[0040] Since long-term use will cause the temperature of the lubricating oil in the lubricating oil tank 210 to continue to rise, a refrigeration component 240 is provided on the side wall of the lubricating oil tank 210. The refrigeration component 240 adopts a semiconductor refrigeration plate. The refrigeration end of the semiconductor refrigeration plate faces the inner cavity of the lubricating oil tank 210 and contacts the lubricating oil to cool the lubricating oil and ensure the cooling effect.

[0041] Since the housing 110 is an assembled housing, in order to avoid oil leakage at the connection gap of the housing 110, a second oil seal is provided between the housing 110 and the first transmission shaft 130 and between the housing 110 and the second transmission shaft 140 to avoid oil leakage.

[0042] During specific use, the first transmission shaft 130 is connected to an external power source to drive the first transmission shaft 130 to rotate. After the planetary gear set 120 changes speed, the power is output through the second transmission shaft 140. During operation, the first transmission shaft 130 synchronously drives the driving gear 340 to rotate, the driving gear 340 drives the driven gear 330 to rotate, the driven gear 330 synchronously drives the rotating shaft 310 to rotate, the rotating shaft 310 drives the blades 320 to rotate, and the blades 320 drive the lubricating oil in the vertical pipe 230 to circulate, providing liquid flow power, so that the lubricating oil circulates in the housing 110 and the lubricating oil tank 210 through the delivery pipeline 220, lubricating the gears while taking away the heat generated by the friction of the gears to avoid excessive temperature affecting the service life of the gears. The refrigeration component 240 cools the lubricating oil to ensure the cooling effect.

[0043] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A planetary gear set structure, characterized in that: include: A planetary gear mechanism (100) comprises a housing (110), a planetary gear set (120), a first transmission shaft (130), a second transmission shaft (140) and a nozzle (150); the housing (110) is provided with a planetary gear set (120); the upper end of the planetary gear set (120) is connected to the first transmission shaft (130); the lower end of the planetary gear set (120) is connected to the second transmission shaft (140); and nozzles (150) are provided on both sides of the top of the housing (110); A circulation mechanism (200) is connected to the pipe opening (150), the circulation mechanism (200) comprising a lubricating oil tank (210), a delivery pipeline (220) and a vertical pipe (230), a delivery pipeline (220) in communication with the pipe opening (150) being arranged on a side of the lubricating oil tank (210), and a vertical pipe (230) being arranged on one side of the delivery pipeline (220); The transmission mechanism (300) is arranged on the vertical pipe (230).

2. A planetary gear set structure according to claim 1, characterized in that: The transmission mechanism (300) comprises a rotating shaft (310), a blade (320), a driven gear (330) and a driving gear (340); the rotating shaft (310) is rotatably connected to the vertical pipe (230); the blade (320) is arranged at the lower end of the rotating shaft (310); the driven gear (330) is arranged at the upper end of the rotating shaft (310); and the driving gear (340) meshing with the driven gear (330) is arranged on the first transmission shaft (130).

3. A planetary gear set structure according to claim 2, characterized in that: A rotating hole is provided at the top of the vertical pipe (230), and a first oil seal is provided at the connection position between the rotating shaft (310) and the rotating hole.

4. A planetary gear set structure according to claim 1, characterized in that: The lubricating oil tank (210) adopts a transparent box body, and a liquid level identification scale is arranged on the outside of the lubricating oil tank (210).

5. A planetary gear set structure according to claim 1, characterized in that: The side wall of the lubricating oil tank (210) is provided with a refrigeration component (240), and the refrigeration component (240) adopts a semiconductor refrigeration sheet.

6. A planetary gear set structure according to claim 1, characterized in that: A second oil seal is provided between the housing (110) and the first transmission shaft (130), and between the housing (110) and the second transmission shaft (140).

7. A planetary gear set structure according to claim 1, characterized in that: The delivery pipeline (220) is a transparent pipeline.

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