A three-gear variable planetary transmission

Abstract

The present application relates to the technical field of transmission, and especially relates to a three-gear planetary transmission. The three-gear planetary transmission comprises a transmission case, a shaft, a blocking shell, a blocking piece and a first cleaning piece. The transmission case is provided with the shaft. The blocking shell is fixed to the transmission case, and the shaft penetrates through the blocking shell. The blocking piece is rotatably connected to the blocking shell, and the blocking piece is in contact with the shaft. The first cleaning piece is slidably connected to the blocking shell, and the first cleaning piece is used for cleaning the blocking piece. When impurities accumulate between the shaft and the blocking piece, the friction between the shaft and the blocking piece increases, so that the shaft drives the blocking piece to rotate, and then the first cleaning piece scrapes off the impurities on the blocking piece, so as to reduce the impurities between the shaft and the blocking piece, reduce the friction between the shaft and the blocking piece, prolong the service life of the shaft and the blocking piece, reduce the probability of oil leakage, and reduce transmission loss and heat generation.

Description

Technical Field

[0001] This invention relates to the field of transmission technology, and more particularly to a three-speed planetary transmission. Background Technology

[0002] A three-speed planetary transmission typically consists of two planetary gear sets, two shift brakes, and a shift clutch. These components enable the switching between different gears. Oil seals are also an indispensable part of the transmission. They are installed at the input and output shafts of the transmission and serve to seal the gearbox, preventing lubricant leakage and ensuring proper lubrication inside the transmission.

[0003] During the use of transmission oil seals, there is mutual friction between the transmission shaft and the oil seal. As the usage time increases, impurities such as sludge and metal shavings will accumulate between the shaft and the oil seal, leading to increased friction between the shaft and the oil seal. This will increase the wear of the oil seal and the shaft, accelerating damage. If the oil seal is damaged or aged, it will cause lubricating oil leakage, affecting the performance of the transmission and even causing accelerated wear of internal parts, thus affecting the service life of the transmission. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a three-speed planetary transmission.

[0005] The technical solution is: a three-speed planetary transmission, comprising:

[0006] A gearbox, wherein the gearbox is provided with a rotating shaft;

[0007] A sealing housing is fixedly connected to the gearbox, and the rotating shaft passes through the sealing housing;

[0008] A sealing element is rotatably connected to the sealing housing, and the sealing element is in contact with the rotating shaft;

[0009] The first cleaning component is slidably connected to the sealing housing, and the first cleaning component is used to clean the sealing component.

[0010] Furthermore, the first cleaning component is provided with a cavity and an opening for collecting impurities, and the side of the first cleaning component near the sealing component is provided with an inclined surface to improve the cleaning ability of the first cleaning component.

[0011] Furthermore, it also includes:

[0012] An internal gear ring is fixedly connected to the sealing component;

[0013] A rotating shaft is rotatably connected to the sealing housing. The rotating shaft is fixedly connected to a first gear and a second gear. The first gear meshes with the internal gear ring.

[0014] An external gear ring is rotatably connected to the sealing housing, the external gear ring meshes with the second gear, and the external gear ring is fixedly connected to the first cleaning component.

[0015] Furthermore, it also includes:

[0016] The sealing housing is provided with a first sliding groove, the limiting post is slidably connected to the first sliding groove, a spring is provided between the limiting post and the sealing housing, the sealing member is provided with circumferentially evenly distributed grooves, and the limiting post is inserted into an adjacent groove on the sealing member to limit its movement.

[0017] Furthermore, it also includes:

[0018] A sealing plate is slidably connected to the first cleaning component, and the sealing plate is used to block the opening of the first cleaning component.

[0019] Furthermore, it also includes:

[0020] The first fixed shell is fixedly connected inside the first cleaning component;

[0021] A sliding member is slidably connected to the first fixed shell, and the sliding member is fixedly connected to the sealing plate;

[0022] The rotating shell is provided with a second sliding groove, the rotating shell is rotatably connected to the second sliding groove, the second sliding groove is connected to the first sliding groove, the first fixed shell is connected to the rotating shell, and the rotating shell is fixedly connected to the first cleaning component.

[0023] Furthermore, it also includes:

[0024] The second cleaning component is slidably connected to the first cleaning component, and the second cleaning component is used to clean impurities on the rotating shaft.

[0025] Furthermore, the second cleaning component has an inclined surface on the side near the rotating shaft.

[0026] Furthermore, the plane containing the inclined surface of the first cleaning component and the plane containing the inclined surface of the second cleaning component both pass through the opening of the first cleaning component, which is used to guide impurities into the first cleaning component.

[0027] Furthermore, it also includes:

[0028] The second fixed shell is fixedly connected to the first cleaning component, and the second fixed shell is in communication with the rotating shell;

[0029] A sliding rod is slidably connected to the second fixed housing, and the sliding rod is fixedly connected to the second cleaning component.

[0030] The beneficial effects of the present invention are as follows: When impurities accumulate between the shaft and the sealing component, the friction between them increases, causing the shaft to drive the sealing component to rotate. This allows the first cleaning component to scrape away the impurities on the sealing component, thereby reducing the amount of impurities between the shaft and the sealing component and reducing the friction between them. This extends the service life of the shaft and the sealing component, reduces the probability of oil leakage, and reduces transmission losses and heat generation.

[0031] When the first cleaning component cleans the sealing component, the sealing plate releases the seal on the opening of the first cleaning component, allowing impurities to enter the first cleaning component. When the cleaning is complete, the sealing plate seals the opening of the first cleaning component, thus storing the impurities inside the first cleaning component. This reduces the probability of impurities re-entering the area between the shaft and the sealing component, causing secondary contamination.

[0032] The second cleaning component cleans impurities on the shaft, further improving the cleaning effect. When not cleaning, the second cleaning component separates from the shaft, thus avoiding additional resistance and friction when the shaft rotates. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the sealing shell and sealing element of the present invention;

[0035] Figure 3 This is a three-dimensional structural diagram of the internal gear ring and rotating shaft of the present invention;

[0036] Figure 4 This is a three-dimensional structural cross-sectional view of the first cleaning component and the rotating shell of the present invention;

[0037] Figure 5 This is a three-dimensional structural cross-sectional view of the sealing plate and the first fixing shell of the present invention;

[0038] Figure 6 This is a three-dimensional structural diagram of the second fixed shell and sliding rod of the present invention.

[0039] Reference numerals: 1-Gearbox, 2-Rotating shaft, 3-Sealing housing, 301-First slide groove, 302-Second slide groove, 4-Sealing component, 5-First cleaning component, 6-Internal gear ring, 7-Rotating shaft, 8-First gear, 9-Second gear, 10-External gear ring, 11-Limiting post, 12-Sealing plate, 13-First fixed housing, 14-Sliding component, 15-Rotating housing, 16-Second cleaning component, 17-Second fixed housing, 18-Sliding rod. Detailed Implementation

[0040] The present invention provides a three-speed planetary transmission with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0041] A three-speed planetary transmission, such as Figures 1-5 As shown, the device includes a gearbox 1 with a rotating shaft 2; a sealing housing 3 fixedly connected to the gearbox 1, through which the rotating shaft 2 passes; a sealing element 4 rotatably connected to the sealing housing 3 and in contact with the rotating shaft 2; and a first cleaning element 5 slidably connected to the sealing housing 3 for cleaning the sealing element 4. The first cleaning element 5 has a cavity and an opening for collecting impurities, and an inclined surface on the side of the first cleaning element 5 near the sealing element 4 to improve its cleaning ability.

[0042] In the above scheme, the aim is to clean impurities on the sealing component 4, thereby reducing friction caused by impurities and extending its service life. The gearbox 1 is a three-speed planetary gearbox, and the rotating shaft 2 can be its input shaft or output shaft. A seal is provided between the sealing housing 3 and the gearbox 1. The part of the sealing component 4 that contacts the rotating shaft 2 is made of elastic material to achieve a seal, while the rest of the sealing component 4 is made of hard material. A seal is provided between the sealing component 4 and the sealing housing 3 to prevent oil leakage. The opening of the first cleaning component 5 is used to allow impurities to enter, the cavity of the first cleaning component 5 is used to collect impurities, and the inclined surface of the first cleaning component 5 is used to scrape off impurities on the sealing component 4.

[0043] Furthermore, such as Figure 2 and Figure 3 As shown, it also includes: an internal gear ring 6, fixedly connected to the sealing component 4; a rotating shaft 7, rotatably connected to the sealing housing 3, with a first gear 8 and a second gear 9 fixedly connected to the rotating shaft 7, the first gear 8 meshing with the internal gear ring 6; and an external gear ring 10, rotatably connected to the sealing housing 3, the external gear ring 10 meshing with the second gear 9, and the external gear ring 10 fixedly connected to the first cleaning component 5.

[0044] In the above scheme, the aim is to enable the first cleaning component 5 to perform a more comprehensive cleaning of the sealing component 4. Through the arrangement of the internal gear ring 6, rotating shaft 7, first gear 8, second gear 9, and external gear ring 10, the sealing component 4 and the first cleaning component 5 rotate in opposite directions. Each rotation of the sealing component 4 causes the first cleaning component 5 to rotate at least one revolution. Taking the sealing component 4 as an example where four circumferentially evenly distributed grooves are provided, that is, for every 90° rotation of the sealing component 4, the first cleaning component 5 will rotate one revolution in the opposite direction. This allows the first cleaning component 5 to complete more than one revolution relative to the sealing component 4, ensuring the completeness of the cleaning of the sealing component 4 by the first cleaning component 5.

[0045] Furthermore, such as Figure 2 and Figure 3 As shown, it also includes: a limiting post 11, a first sliding groove 301 provided on the sealing housing 3, the limiting post 11 being slidably connected to the first sliding groove 301, a spring provided between the limiting post 11 and the sealing housing 3, and a circumferentially evenly distributed groove provided on the sealing member 4, the limiting post 11 being inserted into the adjacent groove on the sealing member 4 to limit its movement.

[0046] In the above scheme, the purpose is to limit the sealing component 4. The limiting post 11 consists of a cylinder and a hemisphere. The depth of the groove on the sealing component 4 is less than the radius of the upper hemisphere of the limiting post 11, so that the limiting post 11 can be squeezed out of the groove when the sealing component 4 rotates.

[0047] Furthermore, such as Figures 3-5 As shown, it also includes: a sealing plate 12, which is slidably connected to the first cleaning member 5, and the sealing plate 12 is used to seal the opening of the first cleaning member 5.

[0048] In the above scheme, the purpose is to use the first cleaning component 5 to store impurities. The sealing plate 12 is located at the opening of the first cleaning component 5 and is used to seal the opening of the first cleaning component 5.

[0049] Furthermore, such as Figures 2-5 As shown, it also includes: a first fixed shell 13, fixedly connected to the first cleaning member 5; a sliding member 14, slidably connected to the first fixed shell 13, and fixedly connected to the sealing plate 12; a rotating shell 15, the sealing shell 3 is provided with a second sliding groove 302, the rotating shell 15 is rotatably connected to the second sliding groove 302, the second sliding groove 302 communicates with the first sliding groove 301, the first fixed shell 13 communicates with the rotating shell 15, and the rotating shell 15 is fixedly connected to the first cleaning member 5.

[0050] In the above scheme, the purpose is to drive the sealing plate 12 to move in order to control the opening and closing of the opening of the first cleaning member 5. The first slide 301 and the second slide 302, as well as the first fixed shell 13 and the rotating shell 15, are all connected by pipes. The first slide 301, the second slide 302, and the pipes between them, as well as the first fixed shell 13 and its adjacent pipes, are all filled with a fluid for transmission. A seal is provided between the sliding member 14 and the first fixed shell 13, between the rotating shell 15 and the sealing shell 3, and between the limiting post 11 and the first slide 301.

[0051] Working process: When using this device, install it in the working position, then connect the rotating shaft 2 to other devices. After starting work, the rotating shaft 2 rotates, and the sealing part 4 fits against the rotating shaft 2 to prevent lubricating oil leakage. As the usage time increases, sludge, metal shavings, and other impurities accumulate between the sealing part 4 and the rotating shaft 2, leading to increased friction and resistance. When the resistance between them reaches a certain level, the rotating shaft 2 drives the sealing part 4 to rotate through friction. When the sealing part 4 rotates, it squeezes the limiting post 11, causing the limiting post 11 to move and compress the adjacent spring. At the same time, the limiting post 11 forces the liquid in the first slide groove 301 into the second slide groove 302 through the pipeline, and then into the rotating housing 15 through the second slide groove 302, and then into the rotating housing 15 through the pipeline. As the liquid enters the first fixed shell 13, the liquid inside the first fixed shell 13 increases, and the pressure increases, pushing the sliding member 14 to move. The sliding member 14 drives the sealing plate 12 to move, thereby opening the opening of the first cleaning member 5. At the same time as the sealing member 4 rotates, the sealing member 4 drives the internal gear ring 6 to rotate, the internal gear ring 6 drives the first gear 8 to rotate, the first gear 8 drives the rotating shaft 7 to rotate, the rotating shaft 7 drives the second gear 9 to rotate, the second gear 9 drives the external gear ring 10 to rotate, the external gear ring 10 drives the first cleaning member 5 to rotate, and the first cleaning member 5 drives the rotating shell 15 to rotate. At this time, the first cleaning member 5 and the sealing member 4 rotate in opposite directions. When the sealing member 4 rotates 90°, the first cleaning member 5 rotates one revolution, so that the first cleaning member 5 can thoroughly clean the sealing member 4.

[0052] After the first cleaning component 5 scrapes off the impurities on the sealing component 4, the impurities enter the first cleaning component 5. After the sealing component 4 rotates 90°, the limiting post 11 aligns with the groove on the sealing component 4. At this time, because the first cleaning component 5 has cleaned the sealing component 4, the resistance between the sealing component 4 and the rotating shaft 2 is reduced. Therefore, the limiting post 11 is inserted into the groove on the sealing component 4 under the action of the adjacent spring to fix it. At the same time as the limiting post 11 resets, the liquid drives the sliding component 14 to reset in the reverse flow manner. The sliding component 14 drives the sealing plate 12 to close, thereby collecting the impurities into the first cleaning component 5. When the impurities accumulate again to the point that the sealing component 4 rotates, the above process starts again. When the sealing component 4 and the rotating shaft 2 are worn to the point that they can no longer be used or when the first cleaning component 5 is full of impurities, the device is disassembled, the sealing component 4 and the rotating shaft 2 are replaced, the impurities in the first cleaning component 5 are cleaned, and then it can be used again.

[0053] Furthermore, such as Figure 3 , Figure 4 and Figure 6 As shown, it also includes a second cleaning component 16, which is slidably connected to the first cleaning component 5. The second cleaning component 16 is used to clean impurities on the rotating shaft 2. The second cleaning component 16 has an inclined surface on the side near the rotating shaft 2. The plane containing the inclined surface on the first cleaning component 5 and the plane containing the inclined surface on the second cleaning component 16 both pass through the opening of the first cleaning component 5, and are used to guide impurities into the first cleaning component 5.

[0054] The above solution aims to clean impurities on the rotating shaft 2, thereby cleaning the impurities more thoroughly and extending the interval between each cleaning. The second cleaning component 16 presses against the rotating shaft 2 and scrapes off the impurities on it. The part of the second cleaning component 16 that contacts the rotating shaft 2 is made of elastic material to reduce damage to the rotating shaft 2 during cleaning.

[0055] Furthermore, such as Figure 4 and Figure 6 As shown, it also includes: a second fixed shell 17, which is fixedly connected to the first cleaning member 5 and is connected to the rotating shell 15; and a sliding rod 18, which is slidably connected to the second fixed shell 17 and is fixedly connected to the second cleaning member 16.

[0056] In the above scheme, the aim is to adjust the position of the second cleaning component 16 so that the second cleaning component 16 and the rotating shaft 2 are separated when the rotating shaft 2 is not being cleaned, thereby reducing wear on both. The second fixed housing 17 and the rotating housing 15 are connected by a pipe. The second fixed housing 17 and the adjacent pipe are filled with fluid for transmission. A seal is provided between the sliding rod 18 and the second fixed housing 17.

[0057] Workflow: When the sealing component 4 presses the limiting post 11 to move, the limiting post 11 forces the liquid in the first slide groove 301 into the second slide groove 302 through the pipe, and then into the rotating shell 15 from the second slide groove 302. Then, part of the liquid enters the first fixed shell 13 through the pipe, and the other part of the liquid enters the second fixed shell 17 through the pipe. The liquid in the second fixed shell 17 increases, the pressure increases, and pushes the sliding rod 18 to move. The sliding rod 18 drives the second cleaning component 16 to move, so that the second cleaning component 16 contacts the rotating shaft 2, thereby cleaning the impurities on the rotating shaft 2 and causing the impurities to enter the first cleaning component 5. When the limiting post 11 resets, the limiting post 11 drives the second cleaning component 16 to separate from the rotating shaft 2, thereby reducing the friction experienced by the rotating shaft 2 when rotating, extending the service life of the rotating shaft 2 and reducing transmission loss.

[0058] This invention provides a concept and method. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention. These improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A three-speed planetary transmission, Its characteristics include: A gearbox (1) is provided with a rotating shaft (2); A sealing housing (3) is fixed to the gearbox (1), and the rotating shaft (2) passes through the sealing housing (3). The sealing component (4) is rotatably connected to the sealing housing (3), and the sealing component (4) is in contact with the rotating shaft (2); The first cleaning component (5) is slidably connected to the sealing housing (3), and the first cleaning component (5) is used to clean the sealing component (4); Internal gear ring (6) is fixed to the sealing member (4); A rotating shaft (7) is rotatably connected to the sealing housing (3). The rotating shaft (7) is fixedly connected with a first gear (8) and a second gear (9). The first gear (8) meshes with the internal gear ring (6). An external gear ring (10) is rotatably connected to the sealing housing (3). The external gear ring (10) meshes with the second gear (9). The external gear ring (10) is fixedly connected to the first cleaning component (5). The limiting post (11) is provided with a first sliding groove (301) in the sealing housing (3). The limiting post (11) is slidably connected to the first sliding groove (301). A spring is provided between the limiting post (11) and the sealing housing (3). The sealing member (4) is provided with grooves evenly distributed in the circumference. The limiting post (11) is inserted into the adjacent groove on the sealing member (4) to limit its position. A sealing plate (12) is slidably connected to the first cleaning component (5), and the sealing plate (12) is used to block the opening of the first cleaning component (5); The first fixed shell (13) is fixedly connected to the first cleaning component (5); A sliding member (14) is slidably connected to the first fixed shell (13), and the sliding member (14) is fixedly connected to the sealing plate (12); The rotating shell (15) is provided with a second sliding groove (302). The rotating shell (15) is rotatably connected to the second sliding groove (302). The second sliding groove (302) is connected to the first sliding groove (301). The first fixed shell (13) is connected to the rotating shell (15). The rotating shell (15) is fixedly connected to the first cleaning component (5).

2. The three-speed planetary transmission according to claim 1, characterized in that, The first cleaning component (5) is provided with a cavity and an opening for collecting impurities. The first cleaning component (5) is provided with an inclined surface on the side near the sealing component (4) to improve the cleaning ability of the first cleaning component (5).

3. A three-speed planetary transmission according to claim 1, characterized in that, It also includes: The second cleaning component (16) is slidably connected to the first cleaning component (5), and the second cleaning component (16) is used to clean impurities on the rotating shaft (2).

4. A three-speed planetary transmission according to claim 3, characterized in that, The second cleaning component (16) has an inclined surface on the side near the rotating shaft (2).

5. A three-speed planetary transmission according to claim 4, characterized in that, The plane containing the inclined surface of the first cleaning component (5) and the plane containing the inclined surface of the second cleaning component (16) both pass through the opening of the first cleaning component (5) to guide impurities into the first cleaning component (5).

6. A three-speed planetary transmission according to claim 5, characterized in that, It also includes: The second fixed shell (17) is fixedly connected to the first cleaning member (5), and the second fixed shell (17) is in communication with the rotating shell (15); The sliding rod (18) is slidably connected to the second fixed shell (17), and the sliding rod (18) is fixedly connected to the second cleaning component (16).

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