CN114857251A - Lubricating structure of transmission shaft assembly - Google Patents

Lubricating structure of transmission shaft assembly Download PDF

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Publication number
CN114857251A
CN114857251A CN202210610063.3A CN202210610063A CN114857251A CN 114857251 A CN114857251 A CN 114857251A CN 202210610063 A CN202210610063 A CN 202210610063A CN 114857251 A CN114857251 A CN 114857251A
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CN
China
Prior art keywords
oil
hole
bearing
shaft
main
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Pending
Application number
CN202210610063.3A
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Chinese (zh)
Inventor
胡敏
雷欢
罗朝阳
李小粉
陈洪
唐云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Tsingshan Industrial Co Ltd
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Chongqing Tsingshan Industrial Co Ltd
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Filing date
Publication date
Application filed by Chongqing Tsingshan Industrial Co Ltd filed Critical Chongqing Tsingshan Industrial Co Ltd
Priority to CN202210610063.3A priority Critical patent/CN114857251A/en
Publication of CN114857251A publication Critical patent/CN114857251A/en
Pending legal-status Critical Current

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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
    • 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
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • 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
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention discloses a lubricating structure of a transmission shaft assembly, which comprises a box body and a main shaft, wherein the main shaft is provided with a main oil hole, a first radial oil hole, a second radial oil hole and a third radial oil hole, and further comprises a first bearing assembly, a second bearing assembly and a third bearing assembly, and a first oil chamber, a second oil chamber, a third oil chamber, a fourth oil chamber, a fifth oil chamber and a sixth oil chamber which are formed by the first bearing assembly, the second bearing assembly and the third bearing assembly. The invention can make the quantity distribution of the lubricating oil more uniform, thereby improving the lubricating quality of the speed changer, ensuring the service life of parts and the working stability of the speed changer and prolonging the service life of the speed changer.

Description

Lubricating structure of transmission shaft assembly
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to a lubricating structure of a transmission shaft assembly.
Background
Known transmissions are: an oil passage is arranged on a box body of the transmission, lubricating oil is provided for a shaft rotating in the transmission, and the lubricating oil is distributed to gears on the shaft through a plurality of oil holes arranged on the shaft.
CN211525504U discloses a transmission lubricating structure, which includes an oil inlet and a throttling hole arranged on a shaft, and a U-shaped groove on the end face of a gear. The pressure of the whole lubricating system and the lubricating oil distribution of the point are ensured by designing a throttling pore channel on the shaft; by processing the U-shaped groove at the end part of the gear, part of the lubricating oil entering the gap between the gear and the shaft shoulder can be collected, the contact area between the lubricating oil and the part is ensured,
CN211259597U discloses a transmission lubricating structure. The oil-collecting device comprises an input shaft, an output shaft and an oil collecting impeller, wherein an input shaft main oil duct is arranged in the input shaft, a plurality of through holes communicated with the input shaft main oil duct are formed in the input shaft through the wall thickness of the input shaft, the through holes are sequentially formed in the input shaft along the length direction of the input shaft, the input shaft is connected with the output shaft through a needle bearing, an output shaft main oil duct is arranged in the output shaft, the output shaft main oil duct is communicated with the input shaft main oil duct, an output shaft oil inlet communicated with the output shaft main oil duct is formed in one end, away from the input shaft, of the output shaft through the wall thickness of the output shaft, and the oil collecting impeller is sleeved on the outer side of the output shaft oil inlet. The oil collecting impeller is driven by the output shaft to rotate, so that lubricating oil is forcibly sucked into the main oil duct of the output shaft to perform forced lubrication on the needle roller bearing.
CN210034362U discloses an oil guide device for lubricating an automotive transmission inner shaft system, wherein a supporting seat which is positioned in a bearing chamber and integrally formed with a transmission shell is arranged in the transmission shell, an oil guide component which is integrally formed with the transmission shell is arranged on the inner wall surface of the transmission shell, the oil guide component is positioned in the bearing chamber, and the supporting seat is surrounded on the periphery of the oil guide component.
Although the transmission with the above structure lubricates gears of each gear through the lubricating oil holes, the distribution amount of the lubricating oil is uniform in the whole length range of the shaft, the oil amount of the lubricating oil is required to be large, and the dangerous section with a small shaft neck is provided, so that the friction force between the needle bearing and the mating piece is large, and the service life of each part in the transmission is shortened.
Disclosure of Invention
The invention provides a lubricating structure of a transmission shaft assembly, which can reduce the friction force between a needle bearing and a mating piece through active lubrication while bearing corresponding load.
The technical scheme for solving the technical problems is as follows:
a lubricating structure of a transmission shaft assembly comprises a box body, a main shaft, a first bearing assembly, a second bearing assembly and a third bearing assembly, wherein the main shaft is rotatably arranged on the box body, an axial main oil hole is formed in the main shaft, a first radial oil hole, a second radial oil hole and a third radial oil hole which are communicated with the main oil hole are formed in the peripheral surface of the main shaft, the second bearing assembly is matched with the main shaft and corresponds to the second radial oil hole, and the third bearing assembly is matched with the main shaft and corresponds to the third radial oil hole;
the bearing comprises a shaft sleeve, a first bearing assembly, a second bearing assembly and a main shaft, wherein the first bearing assembly is sleeved on the circumferential surface of the shaft sleeve, an inner hole of the shaft sleeve consists of a first hole and a second hole, the inner diameter of the first hole is smaller than that of the second hole, a step is formed between the first hole and the second hole, after the main shaft is matched with the wall surface of the first hole, a first annular oil duct is formed between the second hole and the main shaft, a first oil guide hole and a second oil guide hole which are radial are arranged on the circumferential surface of the shaft sleeve, a first oil guide groove which is axial is arranged along the step and the inner wall surface of the first hole, and the first oil guide hole is communicated with the second oil guide hole;
the first oil guide groove and the second oil guide hole respectively correspond to the first bearing assembly to provide the lubricating oil from the first annular oil passage to the first bearing assembly.
The first gear hub is sleeved on the main shaft and is circumferentially fixed with the main shaft, a first axial end face of the first gear hub is matched with the first bearing assembly, a second axial end face of the first gear hub is matched with the second bearing assembly, and the first axial end face of the first gear hub is also matched with the first axial end face of the shaft sleeve;
and a second oil guide groove is formed in the inner wall surface of the first gear hub, corresponds to the first radial oil hole in the main shaft and is communicated with the first annular oil passage.
The spindle is characterized by further comprising a locking part and a rotary supporting assembly, wherein the rotary supporting assembly is arranged at the end of the spindle, one end of the rotary supporting assembly abuts against the second axial end face of the spindle sleeve, one end of the locking part abuts against the other end of the rotary supporting assembly, the other end of the locking part extends into the main oil hole and is fixed with the spindle, the locking part is provided with an axial first oil hole, and the first oil hole is communicated with the main oil hole in the spindle.
The locking part comprises a connecting part and a limiting part fixed with the connecting part, the first oil hole penetrates through the connecting part and the limiting part, threads are arranged on the peripheral surface of the connecting part, the connecting part is located in the main oil hole and is in threaded connection with the main oil hole, and the limiting part is exposed outside the main oil hole and abuts against the rotary supporting assembly.
The oil guide plate is used for guiding lubricating oil, one part of one end of the oil guide plate is abutted against the inner wall of the box body, a first oil cavity is formed between the oil guide plate and the box body, the other end of the oil guide plate is matched with the other end of the rotary supporting assembly, and a second oil cavity is formed between the oil guide plate, the rotary supporting assembly and the locking component;
the oil guide plate is provided with a first guide hole for guiding lubricating oil to the main oil hole;
and a second guide hole for guiding the lubricating oil to the second oil cavity is formed in the oil guide plate.
The rotary supporting assembly comprises a bearing shaft sleeve and a conical bearing, the bearing shaft sleeve is matched with the main shaft, the conical bearing is sleeved on the bearing shaft sleeve, and the bearing shaft sleeve abuts against the locking component.
In the invention, lubricating oil is conveyed to the first oil cavity through the lubricating oil spray pipe, then a small part of lubricating oil is distributed to the second oil cavity, and most of the lubricating oil is conveyed to the main oil channel of the main shaft through the oil guide plate and then conveyed to the first bearing assembly, the second bearing assembly and the third bearing assembly through a plurality of radial oil holes on the main shaft, so that the lubricating oil can be lubricated; in this case, by changing the structure of some parts, the flow direction of the lubricating oil is wider, so that the components on the main shaft can be lubricated to a relative degree.
The invention is particularly suitable for lubricating the shaft assembly of the transmission, and the lubricating parts of lubricating oil are wider and the oil quantity at each part is more uniform by arranging a plurality of oil ways, thereby improving the lubricating quality of the transmission, ensuring the service life of parts and the working stability of the transmission and prolonging the service life of the transmission.
When the bearing of corresponding load is met, friction force between the needle bearing and a matching piece is reduced through active lubrication, heat dissipation is promoted, the service life of parts is prolonged, shaft strength is improved, the bearing capacity of the transmission is improved, and the service life of the transmission is prolonged.
Drawings
FIG. 1 is a sectional view of the main structure of the present invention;
FIG. 2 is a schematic view of an oil chamber of the present invention;
FIG. 3 is an enlarged view of the bushing of the present invention;
FIG. 4 is an enlarged view of the oil deflection plate of the present invention;
FIG. 5 is an enlarged view of the first hub of the present invention;
FIG. 6 is an enlarged view of the locking element of the present invention;
FIG. 7 is a schematic view of the lubricant nozzle and the housing of the present invention.
Reference numbers in the drawings:
a box body 1, an oil guide plate 2, a first guide hole 2-2, a second guide hole 2-3, a locking part 3, a connecting part 3-2, a limiting part 3-3, a first oil hole 3-1, a main shaft 4, a main oil hole 4-1, a first radial oil hole 4-2, a second radial oil hole 4-3, a third radial oil hole 4-4, a bearing sleeve 5, a taper bearing 6, a sleeve 7, a first hole 7-1, a second hole 7-2, a first oil guide hole 7-3, a second oil guide hole 7-4, a step 7-5, a first oil guide groove 7-6, a first thrust bearing 8, a first right gasket 9, a first gear 10, a first left gasket 11, a second thrust bearing 12, a first gasket 13, a first gear hub 14, a second oil guide groove 14-1, a second gear 15, a third gear 16, the lubricating oil spraying device comprises a lubricating oil spraying pipe 17, a first needle bearing 18, a second needle bearing 19, a third needle bearing 20, a first limiting ring 30, a first oil cavity A, a second oil cavity B, a third oil cavity H, a fourth oil cavity C, a fifth oil cavity F, a sixth oil cavity G and a first annular oil channel D.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 7, the lubricating structure of the transmission shaft assembly comprises a box body 1, a main shaft 4, a first bearing assembly, a second bearing assembly and a third bearing assembly, wherein the main shaft 4 is rotatably arranged on the box body 1, the main shaft 4 is provided with an axial main oil hole 4-1, the peripheral surface of the main shaft 4 is provided with a first radial oil hole 4-2, a second radial oil hole 4-3 and a third radial oil hole 4-4 which are communicated with the main oil hole, the second bearing assembly is matched with the main shaft 4 and corresponds to the second radial oil hole 4-3, and the third bearing assembly is matched with the main shaft 4 and corresponds to the third radial oil hole 4-4;
the bearing comprises a shaft sleeve 7, a first bearing assembly is sleeved on the circumferential surface of the shaft sleeve 7, an inner hole of the shaft sleeve 7 consists of a first hole 7-1 and a second hole 7-2, wherein the inner diameter of the first hole 7-1 is smaller than that of the second hole 7-2, a step 7-5 is formed between the first hole 7-1 and the second hole 7-2, a first annular oil passage D is formed between the second hole 7-2 and the main shaft 4 after the main shaft 4 is matched with the wall surface of the first hole 7-1, a first oil guide hole 7-3 and a second oil guide hole 7-4 which are radial are arranged on the circumferential surface of the shaft sleeve 7, a first oil guide groove 7-6 which is axial is arranged along the step 7-5 and the inner wall surface of the first hole 7-1, and the first oil guide hole 7-3 is communicated with the second oil guide hole 7-4;
the first oil guide groove 7-6 and the second oil guide hole 7-4 correspond to the first bearing assembly, respectively, and supply the lubricating oil from the first annular oil passage D to the first bearing assembly.
In this embodiment, the first bearing assembly comprises a first thrust bearing 8, a second thrust bearing 12, a first needle bearing 18, the second bearing assembly comprises a second needle bearing 19, and the third bearing assembly comprises a third needle bearing 20; based on the structure and the illustration of fig. 2, a first oil chamber a is formed between the box body 1 and the oil guide plate 2, and the lubricating oil firstly enters the first oil chamber a and then is redistributed to other parts of the invention.
In summary, in the present embodiment, first, the main shaft 4 is provided with the first radial oil hole 4-2, the second radial oil hole 4-3, the third radial oil hole 4-4 and the main oil gallery 4-1 at the axial center position of the main shaft 4, and when lubricating oil is to lubricate components on the main shaft 4, the lubricating oil must pass through the main oil gallery 4-1 to be delivered, and then delivered to each radial oil hole, in the present embodiment, the radial oil hole of the main shaft 4 only shows the first radial oil hole 4-2, the second radial oil hole 4-3 and the third radial oil hole 4-4, and more or fewer radial oil holes can be provided according to the bearing component on the main shaft 4; in this embodiment, after the sleeve 7 is sleeved on the main shaft 4, the first annular oil passage D is formed between the second hole 7-2 and the main shaft 4, and after the lubricating oil reaches the first annular oil passage D through the first radial oil hole 4-2, a part of the lubricating oil flows out along the first oil guide groove 7-6, the first oil guide hole 7-3 and the second oil guide hole 7-4 of the sleeve 7 to lubricate the first bearing assembly.
As shown in fig. 1, 2 and 5, the shaft sleeve further comprises a first hub gear 14, the first hub gear 14 is sleeved on the main shaft 4 and fixed with the main shaft 4 in the circumferential direction, a first axial end face of the first hub gear 14 is matched with a first bearing assembly, a second axial end face of the first hub gear 14 is matched with a second bearing assembly 19, and the first axial end face of the first hub gear 14 is also matched with a first axial end face of the shaft sleeve 7;
and a second oil guide groove 14-1 is formed in the inner wall surface of the first gear hub 14, the second oil guide groove 14-1 corresponds to the first radial oil hole 4-2 in the main shaft 4, and the second oil guide groove 14-1 is communicated with the first annular oil passage D.
In the present embodiment, the first hub gear 14 is circumferentially fixed to the main shaft 4 and located between the first bearing assembly and the second bearing assembly, and after the lubricating oil flows into the first hub gear 14 through the first radial oil hole 4-2, the lubricating oil is distributed into the first annular oil passage D by the second oil guide groove 14-1.
As shown in fig. 1 and 2, the oil-saving device further comprises a locking part 3 and a rotary supporting assembly, wherein the rotary supporting assembly is arranged at the end part of the main shaft 4, one end of the rotary supporting assembly abuts against the second axial end surface of the shaft sleeve 7, one end of the locking part 3 abuts against the other end of the rotary supporting assembly, the other end of the locking part 3 extends into the main oil hole 4-1 and is fixed with the main shaft 4, the locking part 3 is provided with an axial first oil hole 3-1, and the first oil hole 3-1 is communicated with the main oil hole 4-1 on the main shaft 4.
The locking part 3 comprises a connecting part 3-2 and a limiting part 3-3 fixed with the connecting part 3-2, the first oil hole 3-1 penetrates through the connecting part 3-2 and the limiting part 3-3, the outer peripheral surface of the connecting part 3-2 is provided with threads, the connecting part 3-2 is positioned in the main oil hole 4-1 and is in threaded connection with the main oil hole 4-1, and the limiting part 3-3 is exposed outside the main oil hole 4-1 and abuts against the rotary supporting component.
The rotary supporting component comprises a bearing shaft sleeve 5 and a conical bearing 6, the bearing shaft sleeve 5 is matched with the main shaft 4, the conical bearing 6 is sleeved on the bearing shaft sleeve 5, and the bearing shaft sleeve 5 abuts against the locking component 3.
In this embodiment, a bearing sleeve 5 is sleeved on a main shaft 4 to axially limit a sleeve 7, a conical bearing 6 is sleeved on the bearing sleeve 5, the other end of the bearing sleeve 5 is limited by a limiting part 3-3 of a locking part 3 (as shown in fig. 6), the other end of the locking part 3 extends into a main oil hole 4-1 of the main shaft 4 and is fixed inside, wherein the locking part 3 and the main oil hole 4-1 form a fourth oil cavity C, lubricating oil passes through the first oil cavity a and then enters the fourth oil cavity C, and an oil guide plate 2 is further arranged between the locking part 3 and a box body 1.
As shown in fig. 1, 2 and 4, a part of one end of the oil guide plate 2 abuts against the inner wall of the box body 1, the other end of the oil guide plate 2 is matched with the other end of the rotation support assembly, and a second oil chamber B is formed between the oil guide plate 2 and the rotation support assembly as well as the locking component 3;
the oil guide plate 2 is provided with a first guide hole 2-3 for guiding lubricating oil to the main oil hole 4-1;
the oil guide plate 2 is provided with a second guide hole 2-2 for guiding the lubricating oil to the second oil chamber B.
In the present embodiment, after the lubricating oil reaches the first oil chamber a, a small portion of the lubricating oil enters the second oil chamber B from the second guide hole 2-2 of the oil guide plate 2 to lubricate the bearing sleeve 5 and the tapered bearing 6, and another large portion of the lubricating oil enters the fourth oil chamber C from the first guide hole 2-3 of the oil guide plate 2 to be distributed to the first radial oil hole 4-2, the second radial oil hole 4-3 and the third radial oil hole 4-4 on the main shaft 4.
As shown in fig. 1 and 2, the second needle bearing 19 is sleeved on the main shaft 4, the second gear 15 is sleeved on the second needle bearing 19, the first gear hub 14 abuts against the end surface 4-10 of the main shaft 4, a fifth oil chamber F is formed among the second needle bearing 19, the second gear 15, the first gear hub 14 and the main shaft 4, and when the lubricating oil enters the second radial oil hole 4-3 through the main oil gallery 4-1, the lubricating oil enters the fifth oil chamber F to lubricate the second needle bearing 19; the third needle bearing 20 is sleeved on the main shaft 4, the third gear 16 is sleeved on the third needle bearing 20, a sixth oil chamber G is formed among the main shaft 4, the third gear 16 and the third needle bearing 20, and after lubricating oil enters the third radial oil hole 4-4 through the main oil hole 4-1, the lubricating oil enters the sixth oil chamber G to lubricate the third needle bearing 20.
As shown in fig. 1, in this embodiment, a first gear 10 is further provided, a first left pad 11 is provided at the left end of the first gear 10, and a first right pad 9 is provided at the right end of the first gear 10, so as to limit the first gear 10; the right end of the first gear hub 14 is provided with a first gasket 13 for limiting the first gear hub 14 and the second thrust bearing 12, the left end of the first gear hub 14 is limited with the end surface 4-10 of the main shaft 4, and the limiting surface 4-10 is matched with the limiting part 3-3 to limit and stabilize the first bearing assembly and the second bearing assembly on the main shaft 4.
As shown in fig. 2, the casing 1 has a third oil chamber H, and all the lubricating oil flows into the third oil chamber H after lubricating the shaft assembly, and then the lubricating oil is delivered to the first oil chamber a by the lubricating oil spray pipe 17, so as to circulate and lubricate the transmission shaft assembly.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and not to limit the scope of the present invention; while the invention has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (6)

1. A lubricating structure of a transmission shaft assembly comprises a box body (1), a main shaft (4), a first bearing assembly, a second bearing assembly and a third bearing assembly, wherein the main shaft (4) is rotatably arranged on the box body (1), an axial main oil hole (4-1) is formed in the main shaft (4), a first radial oil hole (4-2), a second radial oil hole (4-3) and a third radial oil hole (4-4) which are communicated with the main oil hole (4-1) are formed in the peripheral surface of the main shaft (4), the second bearing assembly is matched with the main shaft (4) and corresponds to the second radial oil hole (4-3), and the third bearing assembly is matched with the main shaft (4) and corresponds to the third radial oil hole (4-4);
the bearing comprises a shaft sleeve (7), a first bearing assembly is sleeved on the circumferential surface of the shaft sleeve (7), an inner hole of the shaft sleeve (7) consists of a first hole (7-1) and a second hole (7-2), wherein the inner diameter of the first hole (7-1) is smaller than that of the second hole (7-2), a step (7-5) is formed between the first hole (7-1) and the second hole (7-2), after a main shaft (4) is matched with the wall surface of the first hole (7-1), a first annular oil channel (D) is formed between the second hole (7-2) and the main shaft (4), a first oil guide hole (7-3) and a second oil guide hole (7-4) in the radial direction are arranged on the circumferential surface of the shaft sleeve (7), and a first oil guide groove (7-6) in the axial direction is arranged along the inner wall surfaces of the step (7-5) and the first hole (7-1), the first oil guide hole (7-3) is communicated with the second oil guide hole (7-4);
the first oil guide groove (7-6) and the second oil guide hole (7-4) correspond to the first bearing assembly, respectively, to supply the lubricating oil from the first annular oil passage (D) to the first bearing assembly.
2. The lubrication structure of a transmission shaft assembly according to claim 1, further comprising a first hub gear (14), wherein the first hub gear (14) is sleeved on the main shaft (4) and fixed with the main shaft (4) in a circumferential direction, a first axial end face of the first hub gear (14) is matched with the first bearing assembly, a second axial end face of the first hub gear (14) is matched with the second bearing assembly, and a first axial end face of the first hub gear (14) is also matched with a first axial end face of the shaft sleeve (7);
a second oil guide groove (14-1) is formed in the inner wall face of the first gear hub (14), the second oil guide groove (14-1) corresponds to a first radial oil hole (4-2) in the main shaft (4), and the second oil guide groove (14-1) is communicated with the first annular oil passage (D).
3. The lubricating structure of the transmission shaft assembly according to claim 1, further comprising a locking component (3) and a rotary supporting component, wherein the rotary supporting component is arranged at the end of the main shaft (4), one end of the rotary supporting component abuts against the second axial end face of the shaft sleeve (7), one end of the locking component (3) abuts against the other end of the rotary supporting component, the other end of the locking component (3) extends into the main oil hole (4-1) to be fixed with the main shaft (4), the locking component (3) is provided with an axial first oil hole (3-1), and the first oil hole (3-1) is communicated with the main oil hole (4-1) in the main shaft (4).
4. The lubrication structure of a transmission shaft assembly according to claim 3, wherein the locking member (3) includes a connection portion (3-2) and a stopper portion (3-3) fixed to the connection portion (3-2), the first oil hole (3-1) penetrates the connection portion (3-2) and the stopper portion (3-3), the outer circumferential surface of the connection portion (3-2) is provided with threads, the connection portion (3-2) is located in the main oil hole (4-1) and is in threaded connection with the main oil hole (4-1), and the stopper portion (3-3) is exposed to the outside of the main oil hole (4-1) and abuts against the rotation support assembly.
5. The lubricating structure of a transmission shaft assembly according to claim 3, further comprising an oil guide plate (2) that guides the lubricating oil, a part of one end of the oil guide plate (2) abutting against an inner wall of the case (1), a first oil chamber (A) being formed between the oil guide plate (2) and the case (1), the other end of the oil guide plate (2) being fitted with the other end of the rotation support assembly, and a second oil chamber (B) being formed between the oil guide plate (2) and the rotation support assembly and the locking member (3);
the oil guide plate (2) is provided with a first guide hole (2-3) for guiding lubricating oil to the main oil hole (4-1);
and a second guide hole (2-2) for guiding the lubricating oil to the second oil cavity (B) is formed in the oil guide plate (2).
6. The lubrication structure of the transmission shaft assembly according to claim 3, wherein the rotation support assembly comprises a bearing shaft sleeve (5) and a conical bearing (6), the bearing shaft sleeve (5) is matched with the main shaft (4), the conical bearing (6) is sleeved on the bearing shaft sleeve (5), and the bearing shaft sleeve (5) abuts against the locking component (3).
CN202210610063.3A 2022-05-31 2022-05-31 Lubricating structure of transmission shaft assembly Pending CN114857251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210610063.3A CN114857251A (en) 2022-05-31 2022-05-31 Lubricating structure of transmission shaft assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210610063.3A CN114857251A (en) 2022-05-31 2022-05-31 Lubricating structure of transmission shaft assembly

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Publication Number Publication Date
CN114857251A true CN114857251A (en) 2022-08-05

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Application Number Title Priority Date Filing Date
CN202210610063.3A Pending CN114857251A (en) 2022-05-31 2022-05-31 Lubricating structure of transmission shaft assembly

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116816906A (en) * 2023-08-29 2023-09-29 无锡华盛力通电驱动系统有限公司 Bearing lubricating structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116816906A (en) * 2023-08-29 2023-09-29 无锡华盛力通电驱动系统有限公司 Bearing lubricating structure

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