Oil seepage prevention speed increasing box

Abstract

The utility model discloses an anti-oil-leakage speed-increasing gearbox which comprises a speed-increasing gearbox body, a gear speed-increasing mechanism and an anti-oil-leakage mechanism, the gear speed-increasing mechanism is installed in the speed-increasing gearbox body, and the anti-oil-leakage mechanism comprises an exhaust hole formed in the speed-increasing gearbox body and an oil groove formed in the gear speed-increasing mechanism. According to the oil seepage prevention speed increasing box, heat dissipation and oil guide in the speed increasing box are achieved through the exhaust holes and the oil grooves, air pressure increase caused by high-speed transmission in the speed increasing box is avoided, and the problem that lubricating oil and grease seep out due to high pressure is solved.

Description

Technical Field

[0001] The utility model relates to the field of speed increasers, in particular to an oil leakage prevention speed increaser. Background Art

[0002] A speed increaser is a common speed increasing device and is widely used in household cookers, soybean milk machines, juice machines, wall breakers, etc. When the speed increaser is working, due to its large speed ratio, the gear transmission speed is high, the internal heat generation is relatively serious, the internal air pressure of the speed increaser increases, which may cause the lubricating oil or grease to be extruded out, resulting in oil leakage of the speed increaser, affecting the cleanliness of the speed increaser. More importantly, the reduction of lubricating oil and grease in the speed increaser leads to an increase in the friction force during gear meshing transmission, affecting the normal operation of the gearbox, increasing the gear meshing transmission noise, and reducing the service life of the gearbox. Summary of the Utility Model

[0003] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides an oil leakage prevention speed increaser, which realizes heat dissipation and oil guiding in the speed increaser by setting exhaust holes and oil grooves, avoids the increase of air pressure in the speed increaser due to high-speed transmission, and further avoids the problem of high-pressure seepage of lubricating oil and grease.

[0004] The technical solution adopted by the utility model to solve its problems is as follows:

[0005] An oil leakage prevention speed increaser includes a speed increaser body, a gear speed increasing mechanism, and an oil leakage prevention mechanism. The gear speed increasing mechanism is installed in the speed increaser body. The oil leakage prevention mechanism includes an exhaust hole provided on the speed increaser body and an oil groove provided on the gear speed increasing mechanism.

[0006] Further: The gear speed increasing mechanism includes an input shaft, an output shaft, a double gear, a power input gear fixedly installed on the input shaft, and a power output gear fixedly installed on the output shaft; the power input gear and the power output gear are both meshed with the double gear, the transmission ratio of the power input gear to the double gear is less than 1, and the transmission ratio of the double gear to the power output gear is less than 1;

[0007] The oil groove is provided on the double gear.

[0008] Further: The double gear includes a first gear and a second gear. The first gear and the second gear are coaxially fixedly connected. The first gear and the second gear are respectively meshed with the power input gear and the power output gear;

[0009] The oil groove is provided on the inner hole inner walls of the first gear and the second gear.

[0010] Furthermore: the oil groove arranged on the first gear is communicated with the oil groove arranged on the second gear.

[0011] Furthermore: both the first gear and the second gear are helical gears, and the first gear and the second gear have opposite rotation directions.

[0012] Further: when the anti-seepage oil speed increaser is working, the first gear is located on the upper part of the second gear, and the first gear is a right-handed gear and rotates in a clockwise direction, and the second gear is a left-handed gear and rotates in a clockwise direction; or, the first gear is a left-handed gear and rotates in a counterclockwise direction, and the second gear is a right-handed gear and rotates in a counterclockwise direction.

[0013] Furthermore, when the anti-oil-seepage speed increasing box is working, the exhaust hole is located at the top of the speed increasing box body.

[0014] Furthermore: an oil baffle ring is connected to the exhaust hole, the oil baffle ring is arranged inside the speed increaser body and is integrally connected to the top surface of the speed increaser body, and the exhaust hole is arranged on the top surface of the speed increaser and is located inside the oil baffle ring, and the end of the oil baffle ring away from the exhaust hole is an opening.

[0015] Furthermore: the input shaft and the output shaft are coaxially arranged.

[0016] Furthermore: the double gears are arranged in a plurality of groups and are evenly distributed around the outside of the output shaft.

[0017] In summary, the anti-seepage oil speed increasing box provided by the utility model has the following technical effects:

[0018] 1. The heat dissipation of the speed increaser can be achieved by setting the exhaust holes; the oil groove can be set to guide the oil when the gears are in high-speed transmission to lubricate the tooth surface meshing; the oil groove and the exhaust holes are combined to exhaust and cool the speed increaser when the gears are in high-speed transmission, ensuring the normal oil guidance and lubrication of the lubricating oil and grease in the speed increaser, avoiding the increase of air pressure in the speed increaser, and avoiding the leakage of lubricating oil and grease.

[0019] 2. In the double gears, the first gear and the second gear are both helical gears, and they rotate in opposite directions but in the same direction, so that when the first gear and the second gear are in meshing transmission, the lubricating oil on their wheel surfaces moves to the connection position of the first gear and the second gear, that is, the helical teeth circulate up and down. The speed increaser does not need to be fully filled with oil, but only half filled with oil to prevent the gear oil from leaking out of the exhaust hole when the speed increaser is placed flat.

[0020] 3. An oil-blocking ring is set, that is, an oil-blocking structure is formed outside the exhaust hole to prevent the lubricating oil and grease in the speed increaser from leaking out of the exhaust hole.

[0021] 4. There are several sets of double gears, which are evenly distributed around the outer part of the output shaft to ensure the smoothness of the output shaft during transmission and stable output of

[0022] power, while improving the load-bearing capacity of the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an embodiment of an anti-seepage oil speed increasing box of the present utility model;

[0024] Figure 2 For Figure 1 the internal structure diagram of the speed increasing box in

[0025] Figure 3 For Figure 2 the structural schematic diagram from another perspective of

[0026] Figure 4 It is a structural schematic diagram of the oil blocking ring and the exhaust hole.

[0027] Figure 5 It is a structural schematic diagram of the gear speed increasing mechanism.

[0028] Figure 6 For Figure 5 the explosion diagram of

[0029] Among them, the meanings of the reference numerals are as follows:

[0030] 100, gear speed increasing mechanism; 200, speed increasing box body; 201, positioning surface; 300, anti-seepage oil speed increasing box;

[0031] 10, first bearing; 1, input shaft; 11, power input gear; 111, mounting hole; 12, second bearing; 2, output shaft; 21, power output gear; 22, third bearing; 3, double gear; 31, first gear; 32, second gear; 33, fixed column; 3a, double gear two;

[0032] 5, anti-seepage oil mechanism; 51, oil groove; 52, exhaust hole; 53, oil blocking ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0036] Refer to Figure 1 and Figure 2 , the present utility model discloses an anti-seepage oil speed increaser 300.

[0037] An anti-seepage oil speed increaser 300 includes a speed increaser body 200, a gear speed increasing mechanism 100, and an anti-seepage oil mechanism 5.

[0038] The gear speed increasing mechanism 100 is installed inside the speed increaser body 200. The anti-seepage oil mechanism 5 includes an exhaust hole 52 provided on the speed increaser body 200 and an oil groove 51 provided on the gear speed increasing mechanism 100.

[0039] Based on the above solution, by providing the exhaust hole 52, exhaust and heat dissipation of the inside of the speed increaser body 200 are realized. When the gear speed increasing mechanism 100 in the speed increaser body 200 works, the gears mesh and transmit power at a high speed, generating heat between the gears, resulting in heat generation inside the speed increaser body 200. At the same time, the air pressure inside the speed increaser body 200 increases. At this time, through the exhaust hole 52, the heat inside the speed increaser body 200 is discharged, reducing the accumulation of heat inside the speed increaser body, and maintaining the air pressure inside the speed increaser body 200 within a relatively low or reasonable range, avoiding excessive increase in the air pressure inside the speed increaser body 200, and thus avoiding the problem of the lubricating grease being squeezed out by the air pressure inside the speed increaser body 200.

[0040] Based on the above solution, by providing an oil groove 51 on the gear speed increasing mechanism 100, the oil groove 51 is used to guide the lubricating grease, so that when the gear speed increasing mechanism 100 works, the lubricating grease can enter the meshing gears and between the gears through the oil groove 51, lubricate the tooth surfaces of the meshing gears, reduce the friction of the meshing transmission of the gears, avoid excessive heating of the meshing transmission of the gears, avoid excessive heating inside the speed increaser body 200, ensure the normal operation of the anti-seepage oil speed increaser 300, and extend the service life of the anti-seepage oil speed increaser 300.

[0041] Based on the above solution, by combining the oil sump 51 and the exhaust hole 52, the purpose of reducing the temperature inside the gear speed increasing box body 200 is achieved, avoiding the increase in air pressure inside the gear speed increasing box body 200 due to excessive temperature inside the gear speed increasing box body 200, avoiding the overflow of lubricating grease inside the gear speed increasing box body 200, and ensuring the normal and efficient operation of the gear speed increasing mechanism 100 inside the gear speed increasing box body 200.

[0042] In this technical solution, the gear speed increasing mechanism 100 includes an input shaft 1, an output shaft 2, a double gear 3, a power input gear 11 fixedly installed on the input shaft 1, and a power output gear 21 fixedly installed on the output shaft 2.

[0043] Both the power input gear 11 and the power output gear 21 are meshed with the double gear 3. The transmission ratio of the power input gear 11 to the double gear 3 is less than 1, and the transmission ratio of the double gear 3 to the power output gear 21 is less than 1, achieving the purpose of speed increasing transmission and realizing two-stage speed increasing transmission, so that the output shaft 2 obtains a better output speed.

[0044] The oil sump 51 is arranged on the double gear 3. When the double gear 3 meshes and transmits with the power input gear 11 and the power output gear 21, it can lubricate the power input gear 11 and the power output gear 21, especially the meshing surfaces between the double gear 3 and the power input gear 11 and the power output gear 21.

[0045] During the assembly of the gear speed increasing mechanism 100, the power input gear 11 and the power output gear 21 are respectively fixedly assembled with the input shaft and the output shaft. In order not to affect the fixed assembly of the power input gear 11 and the power output gear 21 with the input shaft and the output shaft respectively, the oil sump 51 is arranged on the double gear 3, which is convenient for the setting and oil injection of the oil sump, and at the same time ensures the strength of the power input gear 11 and the power output gear 21, and ensures the reliable assembly between the power input gear 11 and the power output gear 21 and the input shaft and the output shaft respectively.

[0046] In this technical solution, the double gear 3 includes a first gear 31 and a second gear 32, and the first gear 31 and the second gear 32 are coaxially and fixedly connected. The first gear 31 and the second gear 32 are respectively meshed with the power input gear 11 and the power output gear 21. The oil sump 51 is arranged on the inner hole inner walls of the first gear 31 and the second gear 32.

[0047] Based on the above technical solution, the oil groove 51 is arranged on the inner hole inner walls of the first gear 31 and the second gear 32. During the meshing transmission of the first gear 31 and the second gear 32 with the power input gear 11 and the power output gear 21 respectively, the lubricating grease will overflow from both ends of the oil groove and enter the tooth surfaces of the first gear and the second gear, realizing the lubrication of the double gear, realizing the lubrication of the meshing surfaces of the first gear 31 and the second gear 32 with the power input gear 11 and the power output gear 21 respectively, ensuring the normal meshing transmission of the tooth surfaces in the meshing transmission, and avoiding the serious problem of overheating during the tooth surface transmission.

[0048] During the assembly of the double gear, the double gear 3 is installed on the fixed column 33. One end of the fixed column 33 is fixedly installed with the speed increasing box body 200. The first gear and the second gear have the same rotation speed and rotate around the fixed column 33. The oil groove 51 is arranged on the inner hole inner walls of the first gear 31 and the second gear 32, realizing that there are sufficient channels between the inner hole inner walls of the first gear and the second gear and the fixed column 33 for the lubricating grease to pass through. In addition, when the lubricating grease passes through the oil groove 51, it can also play a lubricating role between the inner wall of the lubricated double gear and the outer wall of the fixed column, reducing the friction between the double gear and the fixed column 33, and at the same time reducing the heat generation of the gear speed increasing mechanism 100 and reducing the temperature in the speed increasing box body 200.

[0049] In this technical solution, the oil groove 51 arranged on the first gear 31 is communicated with the oil groove 51 arranged on the second gear 32, so that the lubricating grease can pass through the oil groove 51 smoothly.

[0050] In the above solution, three oil grooves are evenly arranged on the inner hole inner walls of the first gear and the second gear, and the central axes of the three oil grooves are parallel to the axis of the double gear 3, ensuring the overflow effect of the lubricating grease.

[0051] In this technical solution, both the first gear 31 and the second gear 32 are helical gears, and the helix directions of the first gear 31 and the second gear 32 are opposite. By using helical gears, when the first gear and the second gear are in meshing transmission, the lubricating oil on their tooth surfaces moves towards the connection position of the first gear and the second gear, that is, using the up and down circulation of the helical teeth, it is not necessary to fully fill the oil in this speed increasing box, and semi-fill the oil can be used to prevent the gear oil from leaking out of the exhaust hole when the speed increasing box is placed flat.

[0052] In the above technical solution, both the first gear 31 and the second gear 32 are helical gears. When filling the oil for the gears, it is not necessary to fully fill the oil, and only semi-fill the oil is needed to avoid the problem that the lubricating grease overflows from the exhaust hole when the anti-seepage oil speed increasing box 300 is placed flat. In addition, by using helical gears for the first gear 31 and the second gear 32, it can also ensure that the lubricating grease in the semi-filled state can provide sufficient lubrication for the gear speed increasing mechanism 100.

[0053] In this technical solution, when the anti-seepage oil speed increasing gearbox 300 is working, the first gear 31 is located above the second gear 32. The first gear 31 is a right-handed gear and rotates in the clockwise direction, and the second gear 32 is a left-handed gear and rotates in the clockwise direction; or the first gear 31 is a left-handed gear and rotates in the counterclockwise direction, and the second gear 32 is a right-handed gear and rotates in the counterclockwise direction.

[0054] Based on the above solution, the first gear and the second gear are respectively subjected to downward and upward axial forces, so that the first gear and the second gear both have downward and upward movement tendencies. In this way, the lubricating oil on the first gear and the second gear flows upward or downward respectively, or has downward and upward flow tendencies, so that the lubricating grease can be kept on the double gear 3, realizing the lubrication of the meshing surface of the double gear.

[0055] In addition, in the above solution, when the first gear and the second gear are respectively in meshing transmission, they are respectively subjected to downward and upward axial forces, so that the double gear 3 is kept in a centered or relatively centered position, avoiding or reducing the friction of the double gear against the positioning surfaces 201 at both ends of the fixed column 33. On the one hand, it reduces the wear of the double gear and the positioning surface 201, and on the other hand, it reduces the heat generated by the wear, which also further reduces the heat inside the speed increasing gearbox body 200.

[0056] In this technical solution, when the anti-seepage oil speed increasing gearbox 300 is working, the exhaust hole 52 is located at the top of the speed increasing gearbox body 200. Setting the exhaust hole 52 at the top of the speed increasing gearbox body 200 is convenient for the exhaust hole 52 to discharge the heat inside the speed increasing gearbox body 200 and discharge the high-pressure gas inside the speed increasing gearbox body 200. On the other hand, it avoids the overflow of the lubricating grease inside the speed increasing gearbox body 200 from the position of the exhaust hole 52, especially when the anti-seepage oil speed increasing gearbox 300 is working, it avoids the overflow of the lubricating grease inside the anti-seepage oil speed increasing gearbox 300.

[0057] In this technical solution, to further avoid the overflow of the lubricating grease from the position of the exhaust hole 52, an oil blocking ring 53 is connected to the exhaust hole 52. The oil blocking ring 53 is arranged inside the speed increasing gearbox body 200 and is integrally connected to the inner top surface of the speed increasing gearbox body 200. The exhaust hole 52 is arranged on the inner top surface of the speed increasing gearbox and is located inside the oil blocking ring 53. One end of the oil blocking ring 53 away from the exhaust hole 52 is open.

[0058] The setting of the oil-blocking ring 53 will not, on the one hand, impede or affect the discharge of heat and high-pressure gas in the speed increasing box body 200, and on the other hand, it can prevent the lubricating grease in the speed increasing box body 200 from overflowing. Especially when the gear speed increasing mechanism 100 is working at high speed, the grease will encounter the outer wall of the oil-blocking ring 53 during the overflow process and be blocked by the outer wall of the oil-blocking ring 53, effectively avoiding the overflow of lubricating grease from the position of the exhaust hole 52. Further, the setting of the oil-blocking ring 53 can avoid the problem of lubricating grease overflowing from the exhaust hole when the speed increasing box body 200 is placed horizontally or upside down.

[0059] In this technical solution, in the gear speed increasing mechanism 100, the input shaft 1 and the output shaft 2 are arranged coaxially. The transmission ratio of the power input gear to the first gear is equal to the transmission ratio of the second gear to the power output gear, ensuring two-stage transmission from the input shaft to the output shaft, and the two-stage transmission ratios are equal, ensuring coaxial transmission of the input shaft and the output shaft. The module and number of teeth of the power input gear and the second gear are equal, and the module and number of teeth of the first gear and the power output gear are equal, further ensuring coaxial transmission of the input shaft and the output shaft. The coaxial transmission of the input shaft and the output shaft makes the power transmission more direct, with less energy loss during transmission, improving the transmission efficiency. At the same time, it also makes the power transmission more stable, reducing vibration and noise during transmission, and reducing the unbalanced force caused by non-coaxiality.

[0060] In the above solution, the input shaft and the output shaft are coaxially arranged and transmit power coaxially. The coaxial arrangement of the input shaft and the output shaft makes the structure of the speed increasing mechanism more compact, saving the space of the speed increasing mechanism and reducing the volume of the speed increasing box using this speed increasing mechanism, realizing the miniaturization and light weight of the speed increasing box.

[0061] In the above solution, the input shaft and the output shaft are coaxially arranged and transmit power coaxially, simplifying the structural design of the speed increasing mechanism, making the installation and maintenance of the speed increasing mechanism simpler and more convenient. The input shaft and the output shaft are on the same axis, making it easy to align and adjust the input shaft and the output shaft.

[0062] The power input gear 11 is coaxially and fixedly installed on the input shaft. An installation hole 111 is provided on the power input gear 11, and a first bearing 10 is fixedly installed in the installation hole 111. One end of the output shaft is fixedly connected to the first bearing, realizing the coaxial fixed transmission of the input shaft and the output shaft.

[0063] The mounting hole 111 on the specific power input gear 11 is fixedly assembled with the gear outer ring of the first bearing 10, and the output shaft is fixedly assembled with the gear inner ring of the first bearing 10, realizing the coaxial connection and transmission of the input shaft and the output shaft. During the transmission of the gear speed increasing mechanism 100, since both the first gear 31 and the second gear 32 are helical gears and the helix directions of the first gear 31 and the second gear 32 are opposite and the selected directions are the same. At the same time, when the oil-proof speed increasing box is working, the first gear is located above the second gear, and the first gear is a right-handed gear and rotates in the clockwise direction, and the second gear is a left-handed gear and rotates in the clockwise direction; or the first gear is a left-handed gear and rotates in the counterclockwise direction, and the second gear is a right-handed gear and rotates in the counterclockwise direction. Therefore, the input shaft and the output shaft have the same rotation direction, so the rotation directions of the bearing inner ring and the bearing outer ring of the first bearing are the same, reducing the relative rotation speed between the bearing inner ring and the bearing outer ring of the first bearing, reducing the wear between the bearing inner ring and the bearing outer ring of the first bearing, and the heat generated when the first bearing is working, and reducing the heat in the speed increasing box body 200.

[0064] In addition, the setting of the first bearing, on the one hand, realizes the installation of the input shaft and the output shaft, avoiding the cantilever transmission state of the input shaft and the output shaft, on the other hand, simplifies the installation structure of the input shaft and the output shaft, and at the same time makes the connection structure of the input shaft and the output shaft compact, avoiding the alignment operation when the input shaft and the output shaft are coaxially installed, reducing and even eliminating the error of the coaxial installation of the input shaft and the output shaft. Furthermore, by connecting both the input shaft and the output shaft to the first bearing, combined with the transmission and speed increase of the double gear 3, the transmission of the output shaft is stable, reducing the jitter of the output shaft and making the power output of the output shaft stable.

[0065] A mounting hole 111 for installing the first bearing is provided on the power input gear 11, eliminating a fixing bracket and another bearing originally required in the speed increasing mechanism for installing the input shaft or the output shaft, and at the same time shortening the overall height of the speed increasing mechanism, reducing the height of the speed increasing box, making the speed increasing box at least reduce about 20 mm in height, saving costs, optimizing the assembly difficulty, and optimizing the coaxial assembly accuracy of the input shaft and the output shaft.

[0066] In this technical solution, a second bearing 12 and a third bearing 22 are respectively sleeved on the ends of the input shaft 1 and the output shaft 2 away from the first bearing 10. The second bearing 12 and the third bearing 22 respectively realize the installation of the input shaft and the output shaft at the separated ends, avoiding the problem of cantilever transmission of the input shaft and the output shaft, improving the rotational stability of the output shaft and the output shaft, especially ensuring the stable output of the rotational motion of the output shaft. Further, it reduces the friction between the input shaft and the output shaft and the speed increasing box body 200.

[0067] In this solution, several sets of double-gear 3 are provided and are evenly distributed around the output shaft 2. As Figure 6 shown, the speed increase is in the double-gear II 3a. The double-gear 3 and the double-gear II 3a are symmetrically distributed on the outer periphery of the power output gear 21, achieving a balancing effect on the output shaft, enabling the gear speed increasing mechanism 100 to operate smoothly and reducing the vibration in the gear speed increasing mechanism 100. The uniform winding of multiple sets of double-gears makes the transmission forces received by the power input gear 11 and the power output gear 21 balanced, the transmission between the power input gear 11 and the power output gear 21 is stable, and the power output of the output shaft is stable. In addition, the uniform winding of multiple sets of double-gears can also increase the bearing capacity of the output shaft and improve the output torque of the output shaft.

[0068] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions formed by any combination of the above technical features. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. An anti-seepage oil speed increasing box, characterized in that: It includes a speed increasing gearbox body, a gear speed increasing mechanism and an anti-oil leakage mechanism. The gear speed increasing mechanism is installed inside the speed increasing gearbox body. The anti-oil leakage mechanism includes an exhaust hole provided on the speed increasing gearbox body and an oil groove provided on the gear speed increasing mechanism.

2. The anti-seepage oil speed increasing gearbox according to claim 1, characterized in that: The gear speed increasing mechanism includes an input shaft, an output shaft, a double gear, a power input gear fixedly installed on the input shaft, and a power output gear fixedly installed on the output shaft. Both the power input gear and the power output gear are meshed with the double gear. The transmission ratio between the power input gear and the double gear is less than 1, and the transmission ratio between the double gear and the power output gear is less than 1. The oil groove is provided on the double gear.

3. The anti-oil leakage speed increasing gearbox according to claim 2, wherein: The double gear includes a first gear and a second gear. The first gear and the second gear are coaxially and fixedly connected. The first gear and the second gear are respectively meshed with the power input gear and the power output gear. The oil groove is provided on the inner hole inner walls of the first gear and the second gear.

4. The anti-seepage and speed-increasing gearbox according to claim 3, characterized in that: The oil groove provided on the first gear is communicated with the oil groove provided on the second gear.

5. The anti-seepage oil speed increasing gearbox according to claim 3 or 4, characterized in that: Both the first gear and the second gear are helical gears, and the helix directions of the first gear and the second gear are opposite.

6. The anti-seepage oil speed increasing gearbox according to claim 5, characterized in that: When the anti-oil leakage speed increasing gearbox works, the first gear is located above the second gear. The first gear is a right-handed gear and rotates in the clockwise direction, and the second gear is a left-handed gear and rotates in the clockwise direction. Or, the first gear is a left-handed gear and rotates in the counterclockwise direction, and the second gear is a right-handed gear and rotates in the counterclockwise direction.

7. The anti-seepage and oil-increasing speed reducer according to any one of claims 1 to 4, characterized in that: When the anti-oil leakage speed increasing gearbox works, the exhaust hole is located at the top of the speed increasing gearbox body.

8. The anti-oil-leakage speed increasing gearbox according to claim 7, wherein: An oil blocking ring is connected to the exhaust hole. The oil blocking ring is arranged inside the speed increasing gearbox body and is integrally connected to the inner top surface of the speed increasing gearbox body. The exhaust hole is arranged on the inner top surface of the speed increasing gearbox and is located inside the oil blocking ring. One end of the oil blocking ring away from the exhaust hole is open.

9. The anti-seepage and oil-increasing speed reducer according to claim 2, wherein: The input shaft and the output shaft are arranged coaxially.

10. The anti-seepage oil speed increasing gearbox according to claim 9, wherein: A plurality of groups of the double gears are provided and are evenly distributed around the outside of the output shaft.

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