CN118532471B - An oil spray ring and planetary gear lubrication system - Google Patents
An oil spray ring and planetary gear lubrication system Download PDFInfo
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- CN118532471B CN118532471B CN202411011408.9A CN202411011408A CN118532471B CN 118532471 B CN118532471 B CN 118532471B CN 202411011408 A CN202411011408 A CN 202411011408A CN 118532471 B CN118532471 B CN 118532471B
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- planet
- oil receiving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0479—Gears or bearings on planet carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H2057/085—Bearings for orbital gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The utility model provides an connect oily spray ring and planet row gear lubrication system, including inside hollow oil receiving ring, oil receiving ring contains outer lane and inner circle, the inner circle is open-type, the round hole diameter of the outside lateral wall center department of oil receiving ring is greater than the round hole diameter of the inboard lateral wall center department, be convenient for accept lubricating oil, be equipped with a plurality of shower along the annular interval on the outer lane, the inside of shower is linked together with the inside of oil receiving ring, and be equipped with a plurality of radial oilholes along its axial interval on the shower, the shower direct cartridge is on the planet carrier, can utilize the shower to spray the lubricating oil that oil receiving ring accepted to sun gear, planet wheel and outer ring department, in order to realize the lubrication of each gear structure, need not to set up complicated oil duct on the planet carrier, the processing degree of difficulty has been reduced.
Description
Technical Field
The invention relates to the technical field of planetary reduction, in particular to an oil receiving spray ring and a planetary gear lubricating system.
Background
The motor is high-speed, the system is high-efficient is the main development trend in the vehicle electric drive field, is favorable for reducing the motor size, reduces the whole vehicle energy consumption, and the dry oil tank lubrication is an effective measure for realizing the electric drive is high-efficient, and achieves the effect of reducing the oil stirring loss by reducing the oil stirring quantity of gears.
In the specific implementation mode of lubrication of the dry oil pool, as in the prior art such as publication number CN110081150A, CN105705836A, an oil duct and an oil hole are generally arranged on a planet carrier and a planet wheel shaft so as to play a role in guiding lubricating oil, and further lubrication and supplement of support bearing parts such as a planet wheel support bearing and a planet carrier support bearing are realized.
However, the existing lubrication mode is mainly aimed at lubrication of the support bearing, but no targeted lubrication supplementary measures are adopted for lubrication of the gears, the conventional lubrication mode is generally to arrange an oil spraying port at a position of the planetary frame and a position of the housing adjacent to the meshing position of the gears, the lubrication mode is only applicable to gears meshed in a parallel shaft mode with simple structure and simple matching mode, and for a stepped planetary gear system with an external gear ring and a stepped planetary gear, due to the complexity of the integral structure and the matching mode, the internal open space of the housing is narrow and compact, the arrangement of the oil spraying port and an oil duct is difficult, lubricating oil cannot be uniformly sprayed to the surfaces of all units of the planetary gear, and all gear structures cannot be lubricated.
Disclosure of Invention
In order to solve the technical problems that the prior stepped planetary gear system in the background art does not adopt a targeted lubrication supplement measure for gears, an oil duct is complex and difficult to process, and a sun gear, a planet gear and an outer gear are difficult to lubricate, the invention provides an oil receiving spray ring and a planetary gear lubricating system.
The technical scheme of the invention is as follows:
The invention provides an oil receiving spray ring, which comprises an inner hollow oil receiving ring, wherein the oil receiving ring comprises an outer ring and an inner ring, one side of the outer ring, which is close to a planet carrier, is fixedly provided with an inner side wall, the other side of the outer ring is fixedly provided with an outer side wall, the inner ring is in an open type, the diameter of a round hole in the center of the outer side wall is larger than that of a round hole in the center of the inner side wall so as to receive lubricating oil, the lubricating oil enters the oil receiving ring, a plurality of spray pipes used for being inserted on the planet carrier are fixedly arranged on the outer ring at intervals along the circumferential direction, the axis of each spray pipe is parallel to the axis of the oil receiving ring, the inner part of each spray pipe is communicated with the inner part of the oil receiving ring, a plurality of radial oil holes are formed in the spray pipe at intervals along the axial direction, the radial oil holes are formed in one side, close to a sun wheel, of each spray pipe is not smaller than the axial length of a planet wheel, the spray pipe is directly inserted on the planet carrier, a complex oil passage is not required to be formed, the processing difficulty is reduced, and the lubricating oil received by the spray pipes of the oil receiving the oil ring can be sprayed to the sun wheel, the planet wheel and the outer ring.
Preferably, the outside of the inner side wall of the oil receiving ring is fixedly provided with a lip, the lip is positioned on the peripheral side of the round hole on the inner side wall, and the lip inclines towards the axial direction close to the oil receiving ring so as to improve the fit degree and sealing capability between the oil receiving ring and the planet carrier, and further, leakage does not occur and more lubricating oil can be received.
Preferably, the diameter of the radial oil hole on the spray pipe, which is close to the oil receiving ring, is smaller than that of the radial oil hole far away from the oil receiving ring, so that the radial oil hole far away from the oil receiving ring can have the same oil quantity as that of the radial oil hole close to the oil receiving ring, and the uniformity of oil distribution to the planet gear is ensured.
Preferably, the end of the spray pipe far away from the oil receiving ring is open, so that lubricating oil is conveniently discharged outwards.
Preferably, one end of the spray pipe far away from the oil collecting ring is closed, so that lubricating oil is discharged through the radial oil holes completely, and uniform spraying of the lubricating oil is facilitated.
The invention provides a planet gear lubricating system, which comprises a planet gear mechanism and an oil receiving spray ring, wherein the planet gear mechanism comprises a sun gear, a planet gear and an outer gear ring which are sequentially meshed in a shell, the sun gear is fixedly arranged on an input shaft, the planet gear is rotationally arranged in a planet carrier assembly, the gear ring of the planet gear is outwards exposed out of the planet carrier assembly, the planet gear drives an output shaft to rotate through the planet carrier assembly, the planet carrier assembly is rotationally connected with the shell through a planet carrier support bearing, an oil receiving spray ring is inserted into the side wall of one side, close to the output shaft, of the planet carrier assembly, a spray pipe is alternately arranged with the planet gear, a lip edge is attached to the outer wall of the adjacent planet carrier assembly, the planet carrier support bearing is positioned in an area surrounded by the lip edge, an axial oil hole is arranged in the output shaft, a radial oil hole is formed in the position, close to the planet carrier support bearing, lubricating oil is thrown to the planet carrier support bearing through the axial oil hole in the output shaft, so as to lubricate the planet carrier support bearing, the periphery of the planet carrier support bearing is provided with the oil receiving spray ring, the lubricating oil after the planet carrier support bearing enters the oil receiving ring under the side of the planet carrier support bearing, thus the oil receiving ring is blocked, the oil is required to be processed, and the cost of the planet gear is reduced, and the oil is not required to be processed by the sun gear and the oil carrying structure.
Preferably, the axial oil hole is formed in the input shaft, the radial oil hole is formed in the position, close to the support bearing of the planet carrier, of the input shaft, the axial oil hole in the input shaft is communicated with the axial oil hole in the output shaft through an oil pipe, and an oil receiving spray ring is inserted into the side wall, close to the input shaft, of the planet carrier assembly, so that each support bearing at the input shaft can be lubricated.
Preferably, the planet wheel is fixedly connected with the planet carrier assembly through a hollow wheel shaft, a bearing is arranged between the planet wheel and the wheel shaft, an oil drain hole is formed in the side wall of the wheel shaft, a spray pipe is inserted into the wheel shaft, the wheel shaft receives lubricating oil of the planet carrier support bearing at the input shaft through an oil receiving ring, the oil receiving ring can receive the lubricating oil of the support bearing at the input shaft and guide the lubricating oil into the wheel shaft so as to be used for lubricating the planet wheel support bearing, lubrication of all moving parts of the planet row gear and each support bearing is realized, a complex oil duct and a lubricating structure are not required to be arranged in a planet row gear system, the structure is simple, and the processing cost is reduced.
Preferably, the oil pipe is in clearance fit with the input shaft, the oil pipe is in clearance fit with the output shaft, and direct transmission of force between the input shaft and the output shaft is avoided.
Preferably, a connecting hole is formed in one side, close to the output shaft, of the planet carrier assembly, and tooth grooves matched with the output shaft are formed in the inner wall of the connecting hole, so that the output shaft can synchronously move with the planet carrier assembly under the driving of the planet carrier assembly.
According to the technical scheme, the invention has the advantages that:
1. The oil receiving spray ring is used for being inserted on the planet carrier, the oil receiving ring of the oil receiving spray ring is opened, the diameter of a round hole in the center of the outer side wall is larger than that of a round hole in the center of the inner side wall, lubricating oil is convenient to receive, a plurality of spray pipes are fixedly arranged on the outer ring along the annular interval, the inner parts of the spray pipes are communicated with the inner parts of the oil receiving rings, a plurality of radial oil holes are formed in the spray pipes along the axial interval, the spray pipes are directly inserted on the planet carrier, the lubricating oil received by the oil receiving rings can be sprayed to the sun gear, the planet gears and the outer ring by utilizing the spray pipes, so that lubrication of each gear structure is realized, a complex oil duct does not need to be formed on the planet carrier, and the processing difficulty is reduced.
2. The outside of the side wall of the inner side of the oil receiving ring is fixedly provided with a lip edge, so that the fit degree and sealing capability between the oil receiving ring and the planet carrier can be improved, and the diameter of a radial oil hole on the spray pipe, which is close to the oil receiving ring, is smaller than that of a radial oil hole far away from the oil receiving ring, so that the radial oil hole far away from the oil receiving ring can have the same oil quantity as the radial oil hole close to the oil receiving ring, and the uniformity of oil distribution to the planet gear is ensured.
3. The oil receiving spray rings are inserted into two sides of the planet carrier assembly (namely, the positions of the input shaft and the output shaft), lubricating oil for lubricating the planet carrier support bearing can be received through the oil receiving spray rings, and then the lubricating oil is conveyed and sprayed to the planet gears, the sun gear, the outer gear ring and the planet gear support bearing, lubrication of all moving parts of the planet row gears and all the support bearings is realized based on a single oil source, a structural basis is provided for realizing lubrication of a dry oil tank, a complex oil duct and a lubricating structure are not required to be arranged in a planet row gear system, the structure is simple, and the processing cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an oil receiving spray ring according to one or more embodiments of the present disclosure;
FIG. 2 is a schematic cross-sectional view of an oil receiving spray ring according to one or more embodiments of the present disclosure;
FIG. 3 is a schematic cross-sectional view of another oil receiving spray ring according to one or more embodiments of the present invention;
FIG. 4 is a schematic oil circuit diagram of a planetary gear lubrication system according to one or more embodiments of the present invention;
FIG. 5 is a schematic oil circuit diagram of another planetary gear lubrication system according to one or more embodiments of the present invention;
FIG. 6 is a schematic view of a partial cross-sectional structure of a planet carrier according to one or more embodiments of the invention;
FIG. 7 is a schematic diagram of a planet according to one or more embodiments of the present disclosure;
FIG. 8 is a schematic oil circuit diagram of a planetary gear lubrication system according to one or more embodiments of the present invention from a perspective;
FIG. 9 is a schematic perspective view of a planetary gear lubrication system according to one or more embodiments of the present invention;
FIG. 10 is a schematic side view of a planetary gear lubrication system according to one or more embodiments of the present invention;
The components represented by the reference numerals in the figures are:
1. Oil receiving ring 101, outer side wall 102, outer ring 103, inner side wall 104, lip edge 2, spray pipe 201, first axial oil hole 202, first radial oil hole 203, second radial oil hole 204, seal plate 11, output shaft 1101, second axial oil hole 1102, third radial oil hole 12, first planet carrier 1201, first jack 1202, first mounting hole 13, planet carrier support bearing 14, oil receiving spray ring 15, second planet carrier 1501, second jack 1502, second mounting hole 16, outer ring 17, shell 1701, oil hole 18, planet wheel 19, sun gear.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.
Example 1
In a typical embodiment of the invention, as shown in fig. 1-3, an oil receiving spray ring is provided, which comprises an oil receiving ring 1 and a plurality of spray pipes 2, wherein the spray pipes 2 are fixedly arranged on the oil receiving ring 1 at intervals along the circumferential direction, the inner part of each spray pipe 2 is communicated with the inner part of the oil receiving ring 1, and the length of each spray pipe 2 is not smaller than the axial length of each planet wheel 18, so that lubricating oil can be sprayed onto the planet wheels 18 through the spray pipes 2, and further the lubricating oil is smeared on a sun wheel 19 and an outer gear ring 16 in the meshing rotation process.
As shown in fig. 2 and 3, the oil-collecting ring 1 is a hollow annular structure with an opening towards the inner side, the inner ring of the oil-collecting ring 1 is an open type, the outer ring 102 of the oil-collecting ring 1 is a smooth arc surface, side walls are fixedly arranged on two sides of the outer ring 102, a round hole is formed in the center of each side wall on two sides of the outer ring 102, and the two round holes are coaxially arranged, wherein the diameter of a round hole of an outer side wall 101 of the oil-collecting ring 1 is larger than that of a round hole of an inner side wall 103 of the oil-collecting ring 1, the oil-collecting ring 1 can be arranged on a planet carrier assembly, the inner side wall 103 is adjacent to the planet carrier, and lubricating oil for lubricating a planet carrier supporting bearing 13 can be blocked and received.
The outside of the inner side wall 103 of the oil receiving ring 1 is fixedly provided with a lip 104, the lip 104 is positioned on the peripheral side of the round hole on the inner side wall 103, the lip 104 and the round hole on the inner side wall 103 are coaxially arranged, the lip 104 inclines towards the axis direction close to the oil receiving ring 1, and the lip 104 extends towards the direction far away from the outer side wall 101, so that the round hole of the inner side wall 103 of the oil receiving ring 1 is in line contact with an adjacent planet carrier, the fit degree and sealing capability between the oil receiving ring 1 and the planet carrier are improved, leakage does not occur, and more lubricating oil can be received.
One end of the spray pipe 2 is fixedly arranged on the outer ring 102 of the oil receiving ring 1, the spray pipe 2 extends towards a direction away from the inner side wall 103 of the oil receiving ring 1, the axis of the spray pipe 2 is parallel to the axis of the oil receiving ring 1, the spray pipe 2 is of a hollow structure, a first axial oil hole 201 is formed in the spray pipe 2 along the axial direction of the spray pipe, the first axial oil hole 201 is communicated with the inner part of the oil receiving ring 1, and lubricating oil received by the oil receiving ring 1 can be thrown to the inner wall of the outer ring 102 and enter the first axial oil hole 201 of the spray pipe 2 in the rotation process of the oil receiving ring 1.
The spraying pipe 2 is further provided with a plurality of radial oil holes at intervals along the axial direction, the radial oil holes are positioned on one side, close to the sun gear 19, of the spraying pipe 2, and the radial oil holes are communicated with the first axial oil holes 201 and are used for spraying lubricating oil in the spraying pipe 2 to the planet row gears and further used for lubricating the sun gear 19, the planet gears 18 and the outer gear rings 16, in the embodiment, the inner diameter of the spraying pipe 2 is 5-10mm, and the diameter of the radial oil holes is 1-5 mm.
The diameter of the radial oil hole on the spray pipe 2, which is close to the oil receiving ring 1, is smaller than that of the radial oil hole far away from the oil receiving ring 1, so that the radial oil hole far away from the oil receiving ring 1 can have the same oil quantity as that of the radial oil hole close to the oil receiving ring 1to ensure the uniformity of oil distribution to the planet gears, in this embodiment, the spray pipe 2 is provided with a first radial oil hole 202 and a second radial oil hole 203, the first radial oil hole 202 is close to the oil receiving ring 1, and the diameter of the first radial oil hole 202 is smaller than that of the second radial oil hole 203.
The spray pipe 2 is used for being inserted and penetrates through the planet carrier, the spray pipe 2 and the oil collecting ring 1 are arranged, an oil duct is not required to be arranged on the planet carrier and the shell, machining difficulty is reduced, and guiding conveying and spraying of lubricating oil are facilitated.
In order to ensure that the oil receiving spray ring 14 has excellent forming capability, oil resistance, structural strength characteristics and heat resistance characteristics, the oil receiving spray ring 14 can be used in a high-temperature rotation working condition, and the whole oil receiving spray ring 14 is made of glass fiber materials.
In this embodiment, one end of the spray pipe 2 far away from the oil-receiving ring 1 is open, and is inserted on the side wall of the planet carrier/into the axle of the planet wheel when in installation and use, and the side wall of the planet carrier/the axle of the planet wheel is utilized for plugging, in other embodiments, one end of the spray pipe 2 far away from the oil-receiving ring 1 is a closed end, and a sealing plate 204 is fixedly arranged at the moment so as to plug through the sealing plate 204, so that lubricating oil from the oil-receiving ring 1 is totally thrown out by the radial oil holes of the spray pipe 2, and does not leak outwards from the end part of the spray pipe 2.
It will be appreciated that the particular arrangement of the end of the shower pipe 2 remote from the oil slinger 1 may be determined according to practical design requirements and is not particularly limited herein.
Example 2
In another exemplary embodiment of the present invention, as shown in fig. 4-10, a planetary gear lubrication system is provided that includes the oil receiving spray ring 14 and the planetary gear mechanism mentioned in example 1.
The planetary gear mechanism includes an input shaft, an output shaft 11, a carrier assembly, an outer ring gear 16, a housing 17, planet gears 18, and a sun gear 19, all of which are mounted within the housing 17.
The input shaft and the output shaft 11 penetrate through the shell 17, the sun gear 19 is fixedly connected with the input shaft in a coupling or key connection mode and the like, external power is transmitted to the sun gear 19 by the input shaft, the sun gear 19 is located in the planet carrier assembly, a plurality of planet gears 18 are arranged in the planet carrier assembly, the planet gears 18 are fixedly connected with the planet carrier assembly through axles, the planet gears 18 are rotatably connected with the axles through bearings, the axles are of hollow structures, oil drain holes are formed in the side walls of the axles and used for lubricating the bearings, the planet gears 18 are arranged at intervals along the circumferential direction, all the planet gears 18 are meshed with the sun gear 19, when the sun gear 19 rotates, the planet gears 18 revolve around the sun gear 19 and rotate around the axis of the planet gears, as shown in fig. 7, the planet gears 18 in the embodiment are stepped planet gears and comprise a large-end gear ring gear and a small-end gear ring, the large-end gear ring is used for being meshed with the sun gear 19, and the small-end gear ring is used for being meshed with the outer gear 16.
The outer gear ring 16 is fixedly arranged in the shell 17 in a bolting mode and the like, and the small-end gear ring of the planet gear 18 is meshed with the outer gear ring 16, so that different transmission ratios can be realized, the planet gear 18 can move according to a preset track, the stability and reliability of the planetary gear train are improved, the outer gear ring 16 is used as a component for coaction, partial load can be borne, the load of other components is reduced, and the bearing capacity of the system is improved.
As shown in fig. 6, the planet carrier assembly comprises a first planet carrier 12 and a second planet carrier 15, the first planet carrier 12 and the second planet carrier 15 are abutted and fixed through bolting, welding and the like, a plurality of first jacks 1201 and a plurality of first mounting holes 1202 are formed on the first planet carrier 12 at intervals along the circumferential direction, the first jacks 1201 and the first mounting holes 1202 are alternately arranged on the first planet carrier 12 along the circumferential direction, a plurality of second jacks 1501 and a plurality of second mounting holes 1502 are formed on the second planet carrier 15 at intervals along the circumferential direction, the second jacks 1501 and the second mounting holes 1502 are alternately arranged along the circumferential direction of the second planet carrier 15, wherein the first jacks 1201 penetrate through the first planet carrier 12, the second jacks 1501 do not penetrate through the second planet carrier 15, the first jacks 1201 are in one-to-one correspondence with the second jacks 1501 for the insertion of the spray pipes 2, the first mounting holes 1202 are in one-to-one correspondence with the second mounting holes 1502 for the fixed mounting of the wheel shafts of the planet wheels 18, and openings are formed between the first planet carrier 12 and the second planet carrier 15 to allow the planet wheels 18 to be exposed outwards and meshed with the ring gear shafts 16.
Wherein, the central point of first planet carrier 12 puts and has seted up the connecting hole, and the inner wall of connecting hole is equipped with the tooth's socket with output shaft 11 matched with, drives the planet carrier subassembly and rotates when planet wheel 18 revolution, and then drives output shaft 11 around the axle through the planet carrier subassembly and rotate.
The planetary gear assembly is rotatably connected with the housing 17 through a planetary carrier support bearing 13, and the input shaft and the output shaft 11 are also rotatably connected with the housing 17 through support bearings.
Because the input shaft is connected with the motor, oil is required to enter the input shaft from circumferential direction, the processing difficulty is high, oil is conveyed through the output shaft 11, as shown in fig. 4, a second axial oil hole 1101 is formed in the output shaft 11 along the axial direction of the output shaft, a third radial oil hole 1102 is formed in the side wall of the output shaft 11 and close to the position of the planet carrier support bearing 13, the third radial oil hole 1102 is communicated with the second axial oil hole 1101, lubricating oil is conveyed through the second axial oil hole 1101, and oil is thrown to the position of the planet carrier support bearing 13 through the third radial oil hole 1102 so as to lubricate the planet carrier support bearing 13 and the support bearing of the output shaft 11.
The inside of input shaft has offered the axial oilhole equally, the radial oilhole has been offered in the position department that is close to planet carrier support bearing 13 on the outer wall of input shaft, the inside axial oilhole of input shaft communicates with the inside second axial oilhole 1101 of output shaft 11 through oil pipe, oil pipe and the inside axial oilhole 1101 interference fit of second axial oilhole, oil pipe and the inside axial oilhole clearance fit of input shaft, lubricating oil accessible oil pipe gets into in the input shaft and gets rid of to the support bearing department of planet carrier support bearing 13 and input shaft of second planet carrier 15 through radial oilhole for the lubrication of bearing, and oil pipe can not lead to the direct transmission of the power between input shaft and the output shaft 11.
The two sides of the planet carrier assembly are respectively inserted with an oil receiving spray ring 14, the embodiment describes with a first oil receiving spray ring and a second oil receiving spray ring, specifically, the inner side wall 103 of the first oil receiving spray ring is close to the first planet carrier 12 and is attached to the outer wall of the first planet carrier 12 through a lip 104, the planet carrier support bearing 13 is positioned in the area surrounded by the lip 104, lubricating oil after lubricating the planet carrier support bearing 13 enters the oil receiving ring 1 under the shielding of the lip 104, so that the bearing of the lubricating oil is realized, one end of a spray pipe 2 of the first oil receiving spray ring passes through a first insertion hole 1201 and then is inserted into a second insertion hole 1501, and the lubricating oil borne by the oil receiving ring 1 is thrown to the planet wheel 18, the sun wheel 19 and the outer gear ring 16 through a first axial oil hole 201 and a first radial oil hole 202 and a second radial oil hole 203 of the spray pipe 2, so that the lubricating of a planet gear is realized;
The inner side wall 103 of the second oil receiving spray ring is close to the second planet carrier 15 and is attached to the outer wall of the second planet carrier 15 through the lip 104, the planet carrier support bearing 13 is located in the area surrounded by the lip 104, lubricating oil after lubricating the planet carrier support bearing 13 enters the oil receiving ring 1 under the shielding of the lip 104, so that the bearing of the lubricating oil is achieved, the spray pipe 2 of the second oil receiving spray ring is inserted into the wheel shaft of the planet wheel 18 to convey the lubricating oil into the wheel shaft, and the lubricating oil is conveyed into the support bearing of the planet wheel through the oil hole on the wheel shaft to complete the lubrication of the support bearing of the planet wheel.
The lubrication of all moving parts of the planet row gears and each support bearing can be realized through the oil receiving spray ring 14, a structural basis is provided for realizing lubrication of a dry oil tank, a complex oil duct and a lubricating structure are not required to be arranged in a planet row gear system, the structure is simple, and the processing cost is reduced.
As shown in fig. 5, in other embodiments, an oil hole 1701 may be further formed in the housing 17, so that lubricating oil may be directly injected into the oil receiving ring 1 through the oil hole 1701, so as to realize active lubrication of all gears of the planet row.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A planetary gear lubrication system, comprising:
The planetary gear mechanism comprises a shell (17), a sun gear (19), a planet gear (18), an input shaft, an output shaft (11) and a planet carrier assembly, wherein the planet carrier assembly is rotationally connected with the shell (17) through a planet carrier support bearing (13), the sun gear (19) is fixedly arranged on the input shaft, an axial oil hole is formed in the input shaft, a radial oil hole is formed in the position, close to the planet carrier support bearing (13), of the input shaft, the planet gear (18) is meshed with the sun gear (19), the planet gear (18) is rotationally arranged in the planet carrier assembly through a hollow wheel shaft, a gear ring of the planet gear (18) is outwards exposed out of the planet carrier assembly and drives the output shaft (11) to rotate through the planet carrier assembly, an axial oil hole is formed in the output shaft (11), a radial oil hole is formed in the position, close to the planet carrier support bearing (13), and the axial oil hole of the input shaft is communicated with the axial oil hole of the output shaft (11) through an oil pipe;
The oil receiving spray ring (14) is provided with a hollow oil receiving ring (1), the oil receiving ring (1) comprises an inner ring and an outer ring (102), the inner ring is open, a plurality of spray pipes (2) used for being inserted on the planet carrier assembly are arranged on the outer ring (102) at intervals along the circumferential direction, the spray pipes (2) are communicated with the inside of the oil receiving ring (1), and a plurality of radial oil holes are arranged on the spray pipes (2) at intervals along the axial direction;
One side of the planet carrier component, which is close to the output shaft (11), is inserted with a first oil receiving spray ring for lubricating the gear ring, a spray pipe (2) of the first oil receiving spray ring is alternately arranged with the planet gears (18), one side of the planet carrier component, which is close to the input shaft, is inserted with a second oil receiving spray ring, the spray pipe (2) of the second oil receiving spray ring is inserted in the wheel shaft, and the second oil receiving spray ring is used for receiving the lubricating oil discharged by the input shaft and conveying the lubricating oil to a support bearing of the planet gears.
2. A planetary gear lubrication system according to claim 1, characterized in that the planet wheel (18) is fixedly connected with the planet carrier assembly through a hollow wheel shaft, a bearing is arranged between the planet wheel (18) and the wheel shaft, an oil drain hole is arranged on the side wall of the wheel shaft, and the wheel shaft receives lubricating oil of the planet carrier support bearing (13) at the input shaft through an oil receiving ring (1) of the second oil receiving spray ring.
3. A planetary gear lubrication system according to claim 1, wherein the oil pipe is in a clearance fit with the input shaft and the oil pipe is in an interference fit with the output shaft (11).
4. A planetary gear lubrication system according to claim 1, wherein the side of the planet carrier assembly close to the output shaft (11) is provided with a connecting hole, and the inner wall of the connecting hole is provided with tooth grooves matched with the output shaft (11).
5. The planet row gear lubricating system according to claim 1, characterized in that one side of the outer ring (102) close to the planet carrier of the planet carrier assembly is fixedly provided with an inner side wall (103), the other side is fixedly provided with an outer side wall (101), the diameter of a round hole in the center of the outer side wall (101) is larger than that of a round hole in the center of the inner side wall (103), the axis of the spray pipe (2) is parallel to the axis of the oil receiving ring (1), a plurality of radial oil holes are formed in the spray pipe (2) at intervals along the axial direction of the spray pipe, the radial oil holes are located on one side, close to the sun gear (19), of the spray pipe (2), and the length of the spray pipe (2) is not smaller than that of the planet gear (18).
6. The planetary gear lubrication system according to claim 5, wherein a lip (104) is fixedly arranged on the outer side of the inner side wall (103) of the oil receiving ring (1), the lip (104) is positioned on the periphery of the round hole on the inner side wall (103), the lip (104) is inclined towards the direction close to the axis of the oil receiving ring (1), the lip (104) is attached to the outer wall of the adjacent planet carrier assembly, and the planet carrier support bearing (13) is positioned in the area surrounded by the lip (104).
7. The planetary gear lubrication system according to claim 1, wherein the diameter of the radial oil hole on the spray pipe (2) near the oil receiving ring (1) is smaller than the diameter of the radial oil hole far from the oil receiving ring (1).
8. A planetary gear lubrication system according to claim 1, characterized in that the end of the shower pipe (2) remote from the oil receiving ring (1) is open.
9. A planetary gear lubrication system according to claim 1, characterized in that the end of the shower pipe (2) remote from the oil receiving ring (1) is closed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411011408.9A CN118532471B (en) | 2024-07-26 | 2024-07-26 | An oil spray ring and planetary gear lubrication system |
| PCT/CN2025/071954 WO2026020765A1 (en) | 2024-07-26 | 2025-01-13 | Oil receiving spray ring and planetary gear train gear lubrication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411011408.9A CN118532471B (en) | 2024-07-26 | 2024-07-26 | An oil spray ring and planetary gear lubrication system |
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| Publication Number | Publication Date |
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| CN118532471A CN118532471A (en) | 2024-08-23 |
| CN118532471B true CN118532471B (en) | 2025-01-21 |
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| CN202411011408.9A Active CN118532471B (en) | 2024-07-26 | 2024-07-26 | An oil spray ring and planetary gear lubrication system |
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| Country | Link |
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| CN (1) | CN118532471B (en) |
| WO (1) | WO2026020765A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12516725B2 (en) * | 2024-02-19 | 2026-01-06 | Toyota Motor Engineering & Manufacturing North America, Inc. | Planetary pinion oil delivery device |
| CN118532471B (en) * | 2024-07-26 | 2025-01-21 | 中国重汽集团济南动力有限公司 | An oil spray ring and planetary gear lubrication system |
Citations (4)
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|---|---|---|---|---|
| JP2004028291A (en) * | 2002-06-28 | 2004-01-29 | Aisin Aw Co Ltd | Automatic transmission |
| JP2005008143A (en) * | 2003-05-28 | 2005-01-13 | Toyota Motor Corp | Electric drive |
| FR3099220A1 (en) * | 2019-07-23 | 2021-01-29 | Safran Transmission Systems | Planetary gear reducer for a turbomachine |
| CN118532470A (en) * | 2024-07-26 | 2024-08-23 | 中国重汽集团济南动力有限公司 | A stepped planetary gear lubrication system and lubrication method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2813849B2 (en) * | 1992-11-12 | 1998-10-22 | アイシン・エィ・ダブリュ株式会社 | Transmission for vehicles |
| DE102005054084A1 (en) * | 2005-11-12 | 2007-07-12 | Schaeffler Kg | planet carrier |
| JP2007138975A (en) * | 2005-11-15 | 2007-06-07 | Toyota Motor Corp | Lubricating mechanism of planetary gear unit |
| FR3071293B1 (en) * | 2017-09-19 | 2021-01-22 | Safran Trans Systems | TURBOMACHINE PLANETARY OR EPICYCLOIDAL SPEED REDUCER |
| JP2021134902A (en) * | 2020-02-28 | 2021-09-13 | 本田技研工業株式会社 | Lubrication structure of power transmission device |
| CN221257612U (en) * | 2023-11-21 | 2024-07-02 | 南京高精齿轮集团有限公司 | Planetary package lubricating structure and planetary gear box |
| CN118532471B (en) * | 2024-07-26 | 2025-01-21 | 中国重汽集团济南动力有限公司 | An oil spray ring and planetary gear lubrication system |
-
2024
- 2024-07-26 CN CN202411011408.9A patent/CN118532471B/en active Active
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- 2025-01-13 WO PCT/CN2025/071954 patent/WO2026020765A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004028291A (en) * | 2002-06-28 | 2004-01-29 | Aisin Aw Co Ltd | Automatic transmission |
| JP2005008143A (en) * | 2003-05-28 | 2005-01-13 | Toyota Motor Corp | Electric drive |
| FR3099220A1 (en) * | 2019-07-23 | 2021-01-29 | Safran Transmission Systems | Planetary gear reducer for a turbomachine |
| CN118532470A (en) * | 2024-07-26 | 2024-08-23 | 中国重汽集团济南动力有限公司 | A stepped planetary gear lubrication system and lubrication method |
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| Publication number | Publication date |
|---|---|
| CN118532471A (en) | 2024-08-23 |
| WO2026020765A1 (en) | 2026-01-29 |
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