Three-gear variable-speed planetary transmission

Abstract

The invention relates to the technical field of transmissions, in particular to a three-gear variable-speed planetary transmission. Comprising a gearbox provided with a rotating shaft; the plugging shell is fixedly connected to the gearbox, and the rotating shaft penetrates through the plugging shell; the plugging piece is rotationally connected to the plugging shell, and the plugging piece is in contact with the rotating shaft; and the first cleaning piece is connected to the plugging shell in a sliding mode, and the first cleaning piece is used for cleaning the plugging piece. When impurities are accumulated between the rotating shaft and the plugging piece, the friction force between the rotating shaft and the plugging piece is increased, so that the rotating shaft drives the plugging piece to rotate, the first cleaning piece scrapes the impurities on the plugging piece, the impurities between the rotating shaft and the plugging piece are reduced, and the friction between the rotating shaft and the plugging piece is reduced; therefore, the service life of the rotating shaft and the plugging piece is prolonged, the probability of oil leakage is reduced, and transmission loss and heat generation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of transmissions, and particularly to a three-speed planetary transmission. Background Art

[0002] A three-speed planetary transmission usually consists of two planetary rows, two shift brakes and one shift clutch. Different gear shifts are realized through these components. In the composition of the transmission, the oil seal is also an indispensable part. The oil seal is installed at the input shaft and output shaft of the gearbox and plays a sealing role in the planetary transmission to prevent lubricating oil from leaking and ensure the lubrication effect inside the transmission.

[0003] During the use of the transmission oil seal, there is mutual friction between the rotating shaft of the transmission and the oil seal. As the use time increases, impurities such as sludge and metal chips will accumulate between the rotating shaft and the oil seal, resulting in an increase in the friction force between the rotating shaft and the oil seal. In this way, the wear of the oil seal and the rotating shaft will increase, accelerating damage. If the oil seal is damaged or aged, it will cause lubricating oil to leak, affecting the performance of the transmission, and even causing increased wear of internal parts and affecting the service life of the transmission. Summary of the Invention

[0004] In order to overcome the disadvantages mentioned in the above 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, the gearbox is provided with a rotating shaft;

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

[0008] A sealing member, rotatably connected to the sealing housing, and the sealing member contacts the rotating shaft;

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

[0010] Further, the first cleaning member is provided with a cavity and an opening for collecting impurities, and a slope is provided on the side of the first cleaning member close to the sealing member to improve the cleaning ability of the first cleaning member.

[0011] Further, it further comprises:

[0012] An internal gear ring, fixedly connected to the sealing member;

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

[0014] The external gear ring is rotatably connected to the plugging housing. The external gear ring meshes with the second gear, and the external gear ring is fixedly connected to the first cleaning member.

[0015] Furthermore, it further includes:

[0016] The limiting post. The plugging housing is provided with a first sliding groove. The limiting post is slidably connected to the first sliding groove. A spring is arranged between the limiting post and the plugging housing. The plugging member is provided with grooves evenly distributed in the circumferential direction. The limiting post is inserted into the adjacent grooves on the plugging member to limit it.

[0017] Furthermore, it further includes:

[0018] The plugging plate is slidably connected to the first cleaning member. The plugging plate is used to plug the opening of the first cleaning member.

[0019] Furthermore, it further includes:

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

[0021] The sliding member is slidably connected to the first fixed shell. The sliding member is fixedly connected to the plugging plate;

[0022] The rotating shell. The plugging housing is provided with a second sliding groove. The rotating shell is rotatably connected to the second sliding groove. The second sliding groove communicates with the first sliding groove. The first fixed shell communicates with the rotating shell. The rotating shell is fixedly connected to the first cleaning member.

[0023] Furthermore, it further includes:

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

[0025] Furthermore, one side of the second cleaning member close to the rotating shaft is provided with an inclined surface.

[0026] Furthermore, the plane where the inclined surface on the first cleaning member is located and the plane where the inclined surface on the second cleaning member is located both pass through the opening of the first cleaning member, so as to guide the impurities into the first cleaning member.

[0027] Furthermore, it further includes:

[0028] The second fixed shell is fixedly connected to the first cleaning member. The second fixed shell communicates with the rotating shell;

[0029] The sliding rod is slidably connected to the second fixed shell. The sliding rod is fixedly connected to the second cleaning member.

[0030] Advantages of the present invention: When impurities accumulate between the rotating shaft and the plugging member, the frictional force between the two increases, causing the rotating shaft to drive the plugging member to rotate. As a result, the first cleaning member scrapes the impurities on the plugging member to reduce the impurities between the rotating shaft and the plugging member, thereby reducing the friction between the two, extending the service life of the rotating shaft and the plugging member, reducing the probability of oil leakage, and reducing transmission loss and heat generation.

[0031] When the first cleaning member cleans the plugging member, the plugging plate releases the plugging of the opening of the first cleaning member, allowing impurities to enter the first cleaning member. When the cleaning is completed, the plugging plate seals the opening of the first cleaning member, storing the impurities in the first cleaning member to reduce the probability of secondary pollution caused by the impurities reaching between the rotating shaft and the plugging member again.

[0032] The second cleaning member cleans the impurities on the rotating shaft to further improve the cleaning effect. When not in use, the second cleaning member is separated from the rotating shaft to avoid additional resistance and friction when the rotating shaft rotates. Description of the Drawings

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

[0034] Figure 2 It is a three-dimensional structural schematic diagram of the plugging housing and the plugging member of the present invention;

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

[0036] Figure 4 It is a three-dimensional structural sectional view of the first cleaning member and the rotating housing of the present invention;

[0037] Figure 5 It is a three-dimensional structural sectional view of the plugging plate and the first fixing housing of the present invention;

[0038] Figure 6 It is a three-dimensional structural schematic diagram of the second fixing housing and the sliding rod of the present invention.

[0039] Reference numerals in the drawings: 1 - transmission, 2 - rotating shaft, 3 - plugging housing, 301 - first chute, 302 - second chute, 4 - plugging member, 5 - first cleaning member, 6 - internal gear ring, 7 - rotating shaft, 8 - first gear, 9 - second gear, 10 - external gear ring, 11 - limiting post, 12 - plugging plate, 13 - first fixing housing, 14 - sliding member, 15 - rotating housing, 16 - second cleaning member, 17 - second fixing housing, 18 - sliding rod. Detailed Embodiments

[0040] The following describes in detail a three-speed planetary transmission provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0041] A three-speed planetary transmission, as Figures 1 - 5 shown, includes a gearbox 1 provided with a rotating shaft 2; a sealing housing 3 fixedly connected to the gearbox 1, and the rotating shaft 2 passes through the sealing housing 3; a sealing member 4 rotatably connected to the sealing housing 3, and the sealing member 4 contacts the rotating shaft 2; a first cleaning member 5 slidably connected to the sealing housing 3, and the first cleaning member 5 is used to clean the sealing member 4. The first cleaning member 5 is provided with a cavity and an opening for collecting impurities. A slope is provided on the side of the first cleaning member 5 close to the sealing member 4 to improve the cleaning ability of the first cleaning member 5.

[0042] In the above solution, it is intended to clean the impurities on the sealing member 4, thereby reducing the friction caused by the impurities and prolonging its service life. The gearbox 1 is a three-speed planetary transmission, and the rotating shaft 2 can be its input shaft or output shaft. A sealing member is provided between the sealing housing 3 and the gearbox 1. The part of the sealing member 4 in contact with the rotating shaft 2 is made of an elastic material for sealing. The rest of the sealing member 4 is made of a hard material. A sealing member is provided between the sealing member 4 and the sealing housing 3 to prevent oil leakage. The opening of the first cleaning member 5 is used to allow impurities to enter, the cavity of the first cleaning member 5 is used to collect impurities, and the slope of the first cleaning member 5 is used to scrape the impurities on the sealing member 4.

[0043] Furthermore, as Figure 2 and Figure 3 shown, it further includes: an internal gear ring 6 fixedly connected to the sealing member 4; a rotating shaft 7 rotatably connected to the sealing housing 3, and a first gear 8 and a second gear 9 are fixedly connected to the rotating shaft 7. The first gear 8 meshes with the internal gear ring 6; an external gear ring 10 rotatably connected to the sealing housing 3, the external gear ring 10 meshes with the second gear 9, and the external gear ring 10 is fixedly connected to the first cleaning member 5.

[0044] In the above solution, it is aimed to make the first cleaning member 5 clean the plugging member 4 more comprehensively. Through the settings of the internal gear ring 6, the rotating shaft 7, the first gear 8, the second gear 9 and the external gear ring 10, the plugging member 4 and the first cleaning member 5 rotate in opposite directions, and every time the plugging member 4 rotates once, it will drive the first cleaning member 5 to rotate at least one circle. Taking the example that the plugging member 4 in the figure is provided with four grooves evenly distributed in the circumferential direction, that is, every time the plugging member 4 rotates 90°, the first cleaning member 5 will rotate in the opposite direction for one circle, so that the first cleaning member 5 can rotate more than one week relative to the plugging member 4 to ensure the integrity of the cleaning of the plugging member 4 by the first cleaning member 5.

[0045] Further, as Figure 2 and Figure 3 shown, it further includes: a limit post 11. The plugging housing 3 is provided with a first sliding groove 301. The limit post 11 is slidably connected to the first sliding groove 301. A spring is provided between the limit post 11 and the plugging housing 3. The plugging member 4 is provided with grooves evenly distributed in the circumferential direction. The limit post 11 is inserted into adjacent grooves on the plugging member 4 to limit it.

[0046] In the above solution, it is aimed to limit the plugging member 4. The limit post 11 is composed of a cylinder and a hemisphere. The depth of the groove on the plugging member 4 is less than the radius of the hemisphere on the limit post 11, so that the limit post 11 can be extruded from the groove when the plugging member 4 rotates.

[0047] Further, as Figures 3 - 5 shown, it further includes: a plugging plate 12, which is slidably connected to the first cleaning member 5. The plugging plate 12 is used to plug the opening of the first cleaning member 5.

[0048] In the above solution, it is aimed to store impurities by using the first cleaning member 5. The plugging plate 12 is located at the opening of the first cleaning member 5 and is used to plug the opening of the first cleaning member 5.

[0049] Further, as Figures 2 - 5 shown, it further includes: a first fixed shell 13, which is fixedly connected to the inside of the first cleaning member 5; a sliding member 14, which is slidably connected to the first fixed shell 13. The sliding member 14 is fixedly connected to the plugging plate 12; a rotating shell 15. The plugging housing 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 is communicated with the first sliding groove 301. The first fixed shell 13 is communicated with the rotating shell 15. The rotating shell 15 is fixedly connected to the first cleaning member 5.

[0050] In the above solution, it is aimed to drive the plugging plate 12 to move to control the opening and closing of the opening of the first cleaning member 5. The first chute 301 and the second chute 302 are connected through a pipeline, and the first fixed shell 13 and the rotating shell 15 are also connected through a pipeline. The first chute 301, the second chute 302, the pipeline between them, the first fixed shell 13 and its adjacent pipeline are all filled with liquid for transmission. Seals are provided between the sliding member 14 and the first fixed shell 13, between the rotating shell 15 and the plugging housing 3, and between the limiting column 11 and the first chute 301.

[0051] Working process: When using this device, install this device at the working position, then connect the rotating shaft 2 to other devices. After starting to work, the rotating shaft 2 rotates, and the plugging member 4 fits with the rotating shaft 2, thereby preventing the lubricating oil from leaking. As the usage time increases, impurities such as sludge and metal chips accumulate between the plugging member 4 and the rotating shaft 2, resulting in an increase in friction and resistance between them. When the resistance between them reaches a certain level, the rotating shaft 2 drives the plugging member 4 to rotate through friction. When the plugging member 4 rotates, it squeezes the limiting column 11, causing the limiting column 11 to move and compress the adjacent spring. At the same time, the limiting column 11 presses the liquid in the first chute 301 into the second chute 302 through the pipeline, then enters the rotating shell 15 through the second chute 302, and then enters the first fixed shell 13 through the pipeline. The liquid in the first fixed shell 13 increases, and the pressure increases, pushing the sliding member 14 to move. The sliding member 14 drives the plugging plate 12 to move, thereby opening the opening of the first cleaning member 5. While the plugging member 4 rotates, the plugging 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. The first cleaning member 5 drives the rotating shell 15 to rotate. At this time, the first cleaning member 5 and the plugging member 4 rotate in opposite directions. When the plugging member 4 rotates 90°, the first cleaning member 5 rotates one week, so that the first cleaning member 5 can comprehensively clean the plugging member 4.

[0052] After the first cleaning member 5 scrapes off the impurities on the plugging member 4, the impurities enter the first cleaning member 5. After the plugging member 4 rotates 90°, the limiting column 11 aligns with the groove on the plugging member 4. At this time, since the first cleaning member 5 has cleaned the plugging member 4, the resistance between the plugging member 4 and the rotating shaft 2 decreases. Therefore, the limiting column 11 is inserted into the groove on the plugging member 4 under the action of the adjacent spring to fix it. While the limiting column 11 resets, the liquid drives the sliding member 14 to reset in the reverse flow mode mentioned above. The sliding member 14 drives the plugging plate 12 to close, thereby collecting the impurities into the first cleaning member 5. When the impurities accumulate again until the plugging member 4 rotates, the above process starts again. When the plugging member 4 and the rotating shaft 2 are worn out and cannot be used anymore or the first cleaning member 5 is full of impurities, disassemble the device, replace the plugging member 4 and the rotating shaft 2, clean the impurities in the first cleaning member 5, and then it can be used continuously.

[0053] Further, as Figure 3 、 Figure 4 and Figure 6 shown, it further includes: a second cleaning member 16, slidably connected to the first cleaning member 5, and the second cleaning member 16 is used to clean the impurities on the rotating shaft 2. A slope is provided on one side of the second cleaning member 16 close to the rotating shaft 2. The plane where the slope is located on the first cleaning member 5 and the plane where the slope is located on the second cleaning member 16 both pass through the opening of the first cleaning member 5 for guiding the impurities into the first cleaning member 5.

[0054] In the above solution, it aims to clean the impurities on the rotating shaft 2, so as to clean the impurities more comprehensively and extend the interval time for cleaning impurities each time. The second cleaning member 16 abuts against the rotating shaft 2 and scrapes off the impurities on it. The part of the second cleaning member 16 in contact with the rotating shaft 2 is made of an elastic material to reduce the damage to the rotating shaft 2 during cleaning.

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

[0056] In the above solution, it aims to adjust the position of the second cleaning member 16. When the rotating shaft 2 is not being cleaned, the second cleaning member 16 is separated from the rotating shaft 2 to reduce the wear between the two. The second fixed shell 17 and the rotating shell 15 are connected by a pipeline, and the second fixed shell 17 and the adjacent pipeline are both filled with liquid for transmission. A seal is provided between the sliding rod 18 and the second fixed shell 17.

[0057] Working process: When the plugging member 4 squeezes the limiting column 11 to move, the limiting column 11 presses the liquid in the first sliding groove 301 into the second sliding groove 302 through a pipeline, and then the liquid enters the rotating shell 15 from the second sliding groove 302. Then, a part of the liquid enters the first fixed shell 13 through a pipeline, and another part of the liquid enters the second fixed shell 17 through a pipeline. The liquid in the second fixed shell 17 increases, and the pressure increases, pushing the sliding rod 18 to move. The sliding rod 18 drives the second cleaning member 16 to move, so that the second cleaning member 16 contacts the rotating shaft 2, thereby enabling the second cleaning member 16 to clean the impurities on the rotating shaft 2 and making the impurities enter the first cleaning member 5. When the limiting column 11 resets, the limiting column 11 drives the second cleaning member 16 to separate from the rotating shaft 2, thereby reducing the friction suffered by the rotating shaft 2 during rotation, prolonging the service life of the rotating shaft 2 and reducing the transmission loss.

[0058] The present invention provides an idea and method. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by using the prior art.

Claims

1. A three-speed planetary transmission, characterized in that: Included are: A gearbox (1), wherein the gearbox (1) is provided with a rotating shaft (2); A blocking shell (3) is fixedly connected to the gearbox (1), and the rotating shaft (2) passes through the blocking shell (3); A blocking member (4) is rotatably connected to the blocking shell (3), and the blocking member (4) is in contact with the rotating shaft (2); The first cleaning member (5) is slidably connected to the blocking shell (3), and the first cleaning member (5) is used to clean the blocking member (4).

2. A three-speed planetary transmission according to claim 1, characterized in that: The first cleaning member (5) is provided with a cavity and an opening for collecting impurities, and a slope is provided on a side of the first cleaning member (5) close to the blocking member (4) for improving the cleaning ability of the first cleaning member (5).

3. A three-speed planetary transmission according to claim 2, characterized in that: It also includes: an inner gear ring (6) fixedly connected to the blocking member (4); A rotating shaft (7) is rotatably connected to the blocking shell (3); the rotating shaft (7) is fixedly connected with a first gear (8) and a second gear (9); the first gear (8) is meshed with the inner gear ring (6); an outer gear ring (10) is rotatably connected to the blocking shell (3); the outer gear ring (10) is meshed with the second gear (9); and the outer gear ring (10) is fixedly connected to the first cleaning member (5).

4. A three-speed planetary transmission according to claim 3, characterized in that: It also includes: a limiting column (11), the blocking shell (3) is provided with a first slide groove (301), the limiting column (11) is slidably connected to the first slide groove (301), a spring is provided between the limiting column (11) and the blocking shell (3), the blocking member (4) is provided with grooves evenly distributed in the circumferential direction, and the limiting column (11) is inserted into the adjacent grooves on the blocking member (4) to limit it.

5. A three-speed planetary transmission according to claim 4, characterized in that: It also includes a blocking plate (12) which is slidably connected to the first cleaning member (5), and the blocking plate (12) is used to block the opening of the first cleaning member (5).

6. A three-speed planetary transmission according to claim 5, characterized in that: It also includes: a first fixed shell (13) fixedly connected to the first cleaning member (5); A sliding member (14) is slidably connected to the first fixed shell (13), and the sliding member (14) is fixedly connected to the blocking plate (12); The sealing shell (3) is provided with a second slide groove (302), the rotating shell (15) is rotatably connected to the second slide groove (302), the second slide groove (302) is communicated with the first slide groove (301), the first fixed shell (13) is communicated with the rotating shell (15), and the rotating shell (15) is fixedly connected with the first cleaning member (5).

7. A three-speed planetary transmission according to claim 6, characterized in that: It also includes: a second cleaning member (16) slidably connected to the first cleaning member (5), and the second cleaning member (16) is used to clean impurities on the rotating shaft (2).

8. A three-speed planetary transmission according to claim 7, characterized in that: A slope is provided on one side of the second cleaning member (16) close to the rotating shaft (2).

9. A three-speed planetary transmission according to claim 8, characterized in that: The plane where the upper inclined surface of the first cleaning member (5) is located and the plane where the upper inclined surface of the second cleaning member (16) is located both pass through the opening of the first cleaning member (5) and are used to guide impurities into the first cleaning member (5).

10. A three-speed planetary transmission according to claim 9, characterized in that: It also includes: a second fixed shell (17) fixedly connected to the first cleaning member (5), the second fixed shell (17) being in communication with the rotating shell (15); A sliding rod (18) is slidably connected to the second fixed shell (17), and the sliding rod (18) is fixedly connected to the second cleaning member (16).

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