阅读说明：本技术 一种润滑结构及齿轮箱 (Lubricating structure and gear box ) 是由 段振中 张再利 徐莎 王伟康 汪星 于 2021-09-13 设计创作，主要内容包括：本发明的实施例提供了一种润滑结构及齿轮箱,涉及浮动润滑结构技术领域。本发明的实施例提供的润滑结构包括浮动行星架、分油环座、分油环和设置在分油环座和分油环之间的弹性件。分油环座上具有进油通道,同时进油通道一端与进油管连通。分油环具有与进油通道连通的导油通道,并通过导油通道向浮动行星架的润滑油道供油,同时在浮动行星架浮动时,分油环随浮动行星架同步浮动,保证分油环对浮动行星架的供油稳定性。分油环与分油环座之间设置的弹性件,在分油环浮动时发生弹性形变,以补偿浮动量,使进油通道与导油通道保持连通,如此实现了在浮动行星轮系浮动过程中的稳定供油润滑,润滑效果好。(The embodiment of the invention provides a lubricating structure and a gear box, and relates to the technical field of floating lubricating structures. The lubricating structure provided by the embodiment of the invention comprises a floating planet carrier, an oil separating ring seat, an oil separating ring and an elastic piece arranged between the oil separating ring seat and the oil separating ring. An oil inlet channel is arranged on the oil distributing ring seat, and one end of the oil inlet channel is communicated with the oil inlet pipe. The oil distribution ring is provided with an oil guide channel communicated with the oil inlet channel and supplies oil to the lubricating oil channel of the floating planet carrier through the oil guide channel, and simultaneously, when the floating planet carrier floats, the oil distribution ring synchronously floats along with the floating planet carrier, so that the stability of the oil supply of the oil distribution ring to the floating planet carrier is ensured. The elastic piece arranged between the oil distribution ring and the oil distribution ring seat generates elastic deformation when the oil distribution ring floats so as to compensate the floating amount, so that the oil inlet channel and the oil guide channel are communicated, stable oil supply lubrication in the floating process of the floating planetary gear train is realized, and the lubricating effect is good.)

1. A lubrication structure, characterized in that the lubrication structure (100) comprises:

a floating planet carrier (150), wherein the floating planet carrier (150) is provided with a lubricating oil channel (152) inside;

the oil distribution ring seat (110), the oil distribution ring seat (110) is provided with an oil inlet channel (111), and one end of the oil inlet channel (111) is used for being communicated with an oil inlet pipe (300);

an oil distribution ring (120), the oil distribution ring (120) having a friction end surface (125), the friction end surface (125) abutting against the floating planet carrier (150) to float with the floating planet carrier (150); the oil distribution ring (120) is provided with an oil guide channel (121) communicated with the oil inlet channel (111), and the oil guide channel (121) is communicated with the lubricating oil channel (152); and

an elastic member (130) disposed between the oil distribution ring seat (110) and the oil distribution ring (120), the elastic member (130) being configured to keep the oil inlet passage (111) in communication with the oil guide passage (121) in a case where the oil distribution ring (120) floats relative to the oil distribution ring seat (110).

2. The lubrication structure according to claim 1, wherein the oil distribution ring seat (110) includes a connecting portion (112), the connecting portion (112) is annular, and the oil distribution ring (120) is fitted around an outer periphery of the connecting portion (112);

the elastic piece (130) comprises a first sealing ring (131) and a second sealing ring (132) which are arranged on the periphery of the connecting portion (112) at intervals, a sealing oil cavity (133) is formed by the first sealing ring (131), the outer peripheral wall of the connecting portion (112), the second sealing ring (132) and the inner peripheral wall of the oil distribution ring (120) in a surrounding mode, and the oil inlet channel (111) is communicated with the oil guide channel (121) through the sealing oil cavity (133).

3. The lubrication structure according to claim 2, wherein an outer peripheral wall of the connecting portion (112) is provided with a first seal groove (113) and a second seal groove (114), the first seal ring (131) and the second seal ring (132) are respectively provided in the first seal groove (113) and the second seal groove (114), and an inner peripheral surface of the oil-distributing ring (120) presses a radially outer end of the first seal ring (131) and a radially outer end of the second seal ring (132) simultaneously.

4. The lubrication structure as recited in claim 2, wherein the oil guide passage (121) is plural in number, plural oil guide passages (121) are distributed along a circumferential direction of the oil-distributing ring (120), and each of the plural oil guide passages (121) communicates with the oil feed passage (111) through the seal oil chamber (133).

5. The lubrication structure as recited in claim 2, wherein the oil guide passage (121) includes an oil inlet groove (122) and an oil outlet hole (123) that communicate with each other, the oil inlet groove (122) is a bar-shaped structure that extends in a circumferential direction of the oil distribution ring (120), and the oil inlet groove (122) communicates with the seal oil chamber (133); the oil outlet hole (123) extends in the axial direction of the oil distribution ring (120) and penetrates the friction end face (125).

6. The lubrication structure according to claim 2, wherein the elastic member (130) further comprises a spring (134);

the oil distribution ring seat (110) further comprises a seat body part (115) arranged on one side, away from the friction end face (125), of the connecting part (112), a first spring mounting hole (116) is formed in the seat body part (115), and a second spring mounting hole (126) is formed in one end, away from the friction end face (125), of the oil distribution ring (120); both ends of the spring (134) are respectively mounted to the first spring mounting hole (116) and the second spring mounting hole (126).

7. The lubrication structure as claimed in any one of claims 1 to 6, wherein a plurality of wedge grooves (124) are formed in the friction end surface (125), the plurality of wedge grooves (124) are distributed along the circumferential direction of the oil distribution ring (120), and at least some of the plurality of wedge grooves (124) are communicated with the oil guide passage (121).

8. The lubrication structure as recited in claim 7, characterized in that the wedge groove (124) is a bar-shaped structure extending in a radial direction of the oil distribution ring (120).

9. The lubrication structure as recited in claim 7, wherein the side walls of the wedge-shaped groove (124) are beveled.

10. The lubrication structure according to claim 7, wherein said lubrication structure (100) further comprises a guide pin (141); the oil distribution ring seat (110) is provided with a first guide pin hole (117), one end of the oil distribution ring (120) far away from the friction end face (125) is provided with a second guide pin hole, one end of the guide pin (141) is in clearance fit with the first guide pin hole (117), and the other end of the guide pin (141) is in interference fit with the second guide pin hole.

11. The lubrication structure according to any one of claims 1 to 6, wherein the floating planet carrier (150) has a mating surface (153) that mates with the friction end surface (125), an annular oil groove (151) is opened on the mating surface (153), and the oil passage (152) of the floating planet carrier (150) communicates with the annular oil groove (151).

12. The lubrication structure according to claim 11, wherein the lubrication structure (100) further comprises an oil injection pipe (160), both ends of the oil injection pipe (160) are respectively connected with the floating planet carrier (150), and the oil injection pipe (160) is communicated with the oil passage (152) of the floating planet carrier (150); and the oil injection pipe (160) is provided with an oil injection hole (162).

13. A gearbox, characterized in that it comprises a gearbox housing and a lubricating structure (100) according to any one of claims 1-12; the lubricating structure (100) is arranged in the gear box body, and an oil distributing ring seat (110) of the lubricating structure (100) is fixedly connected with the gear box body.

Technical Field

The invention relates to the technical field of floating lubricating structures, in particular to a lubricating structure and a gear box.

Background

In planetary transmission structures, lubrication of floating planetary gear trains has been a difficult problem. In the operation process, due to the eccentricity and the swing caused by the floating of the floating planet carrier, the problem that a stable oil path is difficult to establish, and forced lubrication is difficult to be carried out on bearing parts such as gears, bearings and the like in a wheel system is caused.

In the case of forced lubrication, it is common practice to change the planetary gear train to non-floating, i.e. the two ends of the floating planet carrier are supported by bearings, and the floating planet carrier is rotated around the fixed shaft, so that the end surface of the floating planet carrier is parallel to the stationary member, and oil guiding and oil distributing are completed by rotating seals such as oil injection rings and piston rings. Thus, although the forced lubrication is realized, the planetary gear train is changed into a non-floating fixed shaft structure, the load balancing capacity of the gear train is reduced, and the transmission efficiency is reduced.

Disclosure of Invention

The object of the present invention includes, for example, providing a lubricating structure capable of performing good lubrication of a floating planetary gear train.

The object of the invention is also to provide a gearbox which is capable of providing good lubrication to a floating planetary gear train.

Embodiments of the invention may be implemented as follows:

an embodiment of the present invention provides a lubricating structure including: the floating planet carrier is internally provided with a lubricating oil channel; the oil distribution ring seat is provided with an oil inlet channel, and one end of the oil inlet channel is communicated with an oil inlet pipe; an oil distribution ring having a friction end surface abutting against the floating carrier to float with the floating carrier; the oil distribution ring is provided with an oil guide channel communicated with the oil inlet channel, and the oil guide channel is communicated with the lubricating oil channel; and an elastic member disposed between the oil distribution ring seat and the oil distribution ring to keep the oil inlet passage in communication with the oil guide passage in a case where the oil distribution ring floats relative to the oil distribution ring seat.

Optionally, the oil distribution ring seat comprises a connecting part, the connecting part is annular, and the oil distribution ring is sleeved on the periphery of the connecting part;

the elastic part comprises a first sealing ring and a second sealing ring which are arranged at the periphery of the connecting part at intervals, a sealing oil cavity is formed by the periphery wall of the connecting part, the second sealing ring and the inner periphery wall of the oil distributing ring in a surrounding mode, and the oil inlet channel is communicated with the oil guide channel through the sealing oil cavity.

Optionally, the outer peripheral wall of the connecting portion is provided with a first sealing groove and a second sealing groove, the first sealing ring and the second sealing ring are respectively arranged in the first sealing groove and the second sealing groove, and the inner peripheral surface of the oil distribution ring simultaneously compresses the radial outer end of the first sealing ring and the radial outer end of the second sealing ring.

Optionally, the number of the oil guide channels is multiple, the oil guide channels are distributed along the circumferential direction of the oil distribution ring, and the oil guide channels are communicated with the oil inlet channel through the sealed oil cavity.

Optionally, the oil guide channel includes an oil inlet groove and an oil outlet hole which are communicated with each other, the oil inlet groove is of a strip structure extending along the circumferential direction of the oil distribution ring, and the oil inlet groove is communicated with the sealing oil cavity; the oil outlet extends along the axial direction of the oil distribution ring and penetrates through the friction end face.

Optionally, the elastic member further comprises a spring; the oil distribution ring seat also comprises a seat body part arranged on one side of the connecting part far away from the friction end surface, a first spring mounting hole is formed in the seat body part, and a second spring mounting hole is formed in one end of the oil distribution ring far away from the friction end surface; and two ends of the spring are respectively arranged in the first spring mounting hole and the second spring mounting hole.

Optionally, a plurality of wedge-shaped grooves are formed in the friction end face, the wedge-shaped grooves are distributed along the circumferential direction of the oil distribution ring, and at least part of the wedge-shaped grooves is communicated with the oil guide channel.

Optionally, the wedge-shaped groove is in a strip-shaped structure extending along the radial direction of the oil distribution ring.

Optionally, the side wall of the wedge-shaped groove is an inclined surface.

Optionally, the lubricating structure further comprises a guide pin; the oil distribution ring seat is provided with a first guide pin hole, one end of the oil distribution ring, which is far away from the friction end face, is provided with a second guide pin hole, one end of the guide pin is in clearance fit with the first guide pin hole, and the other end of the guide pin is in interference fit with the second guide pin hole.

Optionally, the floating planet carrier has a fitting surface matched with the friction end surface, an annular oil groove is formed in the fitting surface, and the lubricating oil channel of the floating planet carrier is communicated with the annular oil groove.

Optionally, the lubricating structure further includes an oil injection pipe, two ends of the oil injection pipe are respectively connected with the floating planet carrier, and the oil injection pipe is communicated with a lubricating oil passage of the floating planet carrier; and the oil injection pipe is provided with an oil injection hole.

Embodiments of the present invention also provide a gearbox. The gear box comprises a gear box body and the lubricating structure; the lubricating structure is arranged in the gear box body, and an oil distributing ring seat of the lubricating structure is fixedly connected with the gear box body.

The lubricating structure and the gearbox of the embodiment of the invention have the beneficial effects of, for example:

the lubricating structure provided by the embodiment of the invention comprises a floating planet carrier, an oil separating ring seat, an oil separating ring and an elastic piece arranged between the oil separating ring seat and the oil separating ring. The oil distributing ring seat is provided with an oil inlet channel, one end of the oil inlet channel is communicated with the oil inlet pipe, and when the oil distributing ring is used, the oil distributing ring keeps a static state, so that the oil distributing ring is ensured to be communicated with the oil inlet pipe, and the oil inlet stability is good. The oil distribution ring is provided with an oil guide channel communicated with the oil inlet channel, oil is supplied to the lubricating oil channel of the floating planet carrier through the oil guide channel, meanwhile, one end of the oil distribution ring is provided with a friction end face, the friction end face is used for being abutted against the floating planet carrier, so that when the floating planet carrier floats, the oil distribution ring synchronously floats along with the floating planet carrier, and the oil supply stability of the oil distribution ring to the floating planet carrier is ensured. The elastic piece arranged between the oil distribution ring and the oil distribution ring seat generates elastic deformation when the oil distribution ring floats so as to compensate the floating amount, so that the oil inlet channel and the oil guide channel are communicated, stable oil supply lubrication in the floating process of the floating planetary gear train is realized, and the lubricating effect is good.

The embodiment of the invention also provides a gear box which comprises the lubricating structure, so that the gear box also has the beneficial effects of stably supplying oil to the floating planetary gear train for lubrication and having a good lubricating effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a lubrication structure according to an embodiment of the present invention during normal operation;

FIG. 2 is a schematic diagram of a lubricating structure according to an embodiment of the present invention in floating operation;

FIG. 3 is an exploded view of a lubrication structure provided by an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of the structure at IV in FIG. 1;

FIG. 5 is a schematic cross-sectional view of an oil distribution ring seat in a lubrication structure according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an oil distribution ring seat in a sliding structure according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of the structure at VII in FIG. 1;

fig. 8 is a schematic structural view of an oil control ring in a lubricating structure according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of an oil control ring in a lubricating structure according to an embodiment of the present invention;

FIG. 10 is an enlarged view of a portion of the structure at X in FIG. 9;

fig. 11 is a schematic structural view of an oil spray pipe in the lubricating structure provided by the embodiment of the invention.

Icon: 100-a lubricating structure; 110-oil separating ring seat; 111-an oil inlet channel; 112-a connecting portion; 113-a first seal groove; 114-a second seal groove; 115-a seat body portion; 116-a first spring mounting hole; 117-first guide pin hole; 118-connecting holes; 120-oil separating ring; 121-oil guide channel; 122-an oil inlet tank; 123-oil outlet; 124-wedge-shaped groove; 125-friction end face; 126-second spring mounting hole; 130-an elastic member; 131-a first seal ring; 132-a second seal ring; 133-sealing the oil chamber; 134-a spring; 141-a guide pin; 150-floating planet carrier; 151-annular oil groove; 152-lubricating oil channel; 153-a mating face; 160-oil spray pipes; 161-pipe body; 162-oil spray holes; 163-a mounting plate; 200-a floating planetary gear train; 211-sun gear; 212-a planet wheel; 213-planet pins; 300-oil inlet pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Fig. 1 is a schematic structural view of the lubricating structure 100 provided in this embodiment during normal operation, fig. 2 is a schematic structural view of the lubricating structure 100 provided in this embodiment during floating operation, and fig. 3 is an exploded schematic view of the lubricating structure 100 provided in this embodiment, that is, an axis of the floating planet carrier 150 in fig. 2 is offset from an axis of the oil separating ring seat 110. Referring to fig. 1-3, the present embodiment provides a lubrication structure 100, and accordingly, a gearbox.

The gearbox comprises a lubrication structure 100, while the gearbox comprises a gearbox housing. The lubricating structure 100 is disposed in the gear box body, and the oil distributing ring seat 110 of the lubricating structure 100 is fixedly connected with the gear box body. Meanwhile, the gearbox also comprises other parts of the floating planetary gear train 200, such as the sun gear 211, the planet gears 212 and the like, and forms the complete floating planetary gear train 200 with the floating planetary gear train 150 in the lubricating structure 100, namely the floating planetary gear train 150 is a part of the floating planetary gear train 200.

It should be noted that "connected" herein should be understood in a broad sense, and may be a direct connection, such as the oil separating ring seat 110 being directly fixed in the gear housing by bolts, or an indirect connection, such as the oil separating ring seat 110 being fixedly connected to another component fixed relative to the gear housing.

The lubricating structure 100 includes a floating carrier 150, an oil distribution ring holder 110, an oil distribution ring 120, and an elastic member 130 disposed between the oil distribution ring holder 110 and the oil distribution ring 120. The oil inlet channel 111 is formed in the oil distribution ring seat 110, one end of the oil inlet channel 111 is communicated with the oil inlet pipe 300, and when the oil distribution ring seat is used, the oil distribution ring seat 110 keeps a static state, so that the oil distribution ring seat is guaranteed to be communicated with the oil inlet pipe 300, and the oil inlet stability is good. The oil distribution ring 120 has an oil guide passage 121 communicated with the oil inlet passage 111, and supplies oil to the lubricating oil passage 152 of the floating planet carrier 150 through the oil guide passage 121, and meanwhile, one end of the oil distribution ring 120 has a friction end surface 125, and the friction end surface 125 is used for abutting against the floating planet carrier 150, so that when the floating planet carrier 150 floats, the oil distribution ring 120 synchronously floats along with the floating planet carrier 150, and the stability of oil supply of the oil distribution ring 120 to the floating planet carrier 150 is ensured. The elastic element 130 arranged between the oil distribution ring 120 and the oil distribution ring seat 110 is elastically deformed when the oil distribution ring 120 floats to compensate the floating amount, so that the oil inlet channel 111 and the oil guide channel 121 are communicated, stable oil supply and lubrication in the floating process of the floating planetary gear train 200 are realized, and the lubricating effect is good.

The lubricating structure 100 provided in the present embodiment is further explained below:

fig. 4 is an enlarged schematic view of a partial structure at iv in fig. 1, and fig. 5 is a schematic cross-sectional structure view of an oil distribution ring seat 110 in the lubricating structure 100 according to this embodiment. Referring to fig. 1 to fig. 5, in the present embodiment, the oil distribution ring seat 110 includes a connecting portion 112, the connecting portion 112 is annular, and the oil distribution ring 120 is sleeved on the outer periphery of the connecting portion 112. Meanwhile, the connecting part 112 is annular, and a through cavity is formed in the connecting part, so that the volume and weight of the oil distribution ring seat 110 can be reduced, the floating of the sun gear 211 in the floating planetary gear train 200 can be avoided, and the interference between the sun gear shaft and the oil distribution ring seat 110 in the floating process of the floating planetary gear train 200 is avoided.

Fig. 6 is a schematic structural diagram of the oil distribution ring seat 110 in the sliding structure according to this embodiment. Referring to fig. 1-6, the oil distribution ring seat 110 further includes a seat body portion 115 disposed at one end of the connecting portion 112, the seat body portion 115 is disc-shaped, and along the radial direction of the oil distribution ring seat 110, the seat body portion 115 protrudes out of the connecting portion 112, that is, the radial dimension of the seat body portion 115 is greater than the radial dimension of the connecting portion 112. The seat portion 115 has a plurality of connection holes 118 formed in an outer periphery thereof, and is connected and fixed to the gear housing by fasteners passing through the connection holes 118 during installation.

Further, the elastic member 130 includes a first sealing ring 131 and a second sealing ring 132 disposed at an interval on the outer periphery of the connecting portion 112, the first sealing ring 131, the outer peripheral wall of the connecting portion 112, the second sealing ring 132 and the inner peripheral wall of the oil distribution ring 120 define a sealing oil chamber 133, and the oil inlet passage 111 communicates with the oil guide passage 121 through the sealing oil chamber 133.

Specifically, one end of the oil inlet passage 111 penetrates through an end surface of the seat portion 115 at an end remote from the connection portion 112, and the end of the oil inlet passage 111 communicates with the oil inlet pipe 300. The other end of the oil inlet passage 111 extends in the radial direction of the connecting portion 112, and an opening is formed through the outer peripheral wall of the connecting portion 112. The outer peripheral wall of the connecting portion 112 is provided with a first seal groove 113 and a second seal groove 114, and an opening formed by the oil inlet passage 111 is located between the first seal groove 113 and the second seal groove 114. The first sealing ring 131 and the second sealing ring 132 are respectively installed in the first sealing groove 113 and the second sealing groove 114, meanwhile, the inner circumferential surface of the oil distribution ring 120 simultaneously presses the radial outer end of the first sealing ring 131 and the radial outer end of the second sealing ring 132, so that the oil inlet channel 111 is communicated with the formed sealing oil cavity 133, and when the lubricating structure 100 is in the position as shown in fig. 1 and 4, the first sealing ring 131 and the second sealing ring 132 are both in a compression state, so that when the oil distribution ring 120 floats relative to the oil distribution ring seat 110, the elastic deformation of the first sealing ring 131 and the second sealing ring 132 can compensate the floating amount, the sealing oil cavity 133 is always in a sealing state, the lubricating oil in the sealing oil cavity 133 can smoothly flow into the oil guide channel 121, and the lubrication of the floating planetary gear train 200 is ensured.

The floating planet carrier 150 has a fitting surface 153 fitting with the friction end surface 125, an annular oil groove 151 is provided on the fitting surface 153, and a lubricating oil passage 152 communicating with the annular oil groove 151 is provided in the floating planet carrier 150, so that the lubricating oil entering the oil distribution ring seat 110 from the oil inlet pipe 300 sequentially enters the lubricating oil passage 152 along the oil inlet passage 111, the sealing oil chamber 133, the oil guide passage 121, and the annular oil groove 151, so that a lubricating oil flow path is formed. The lubricating oil entering the lubricating oil channel 152 supplies oil to all the positions of the floating planetary gear train 200 so as to meet the lubricating requirements of all the gear engagement positions and the bearings in the floating planetary gear train 200.

Specifically, fig. 7 is a schematic enlarged partial structure diagram at vii in fig. 1. The lubricating oil passage 152 of the floating carrier 150 communicates with an oil passage in the floating planetary gear train 200, so that the lubricating oil is introduced to the bearings of the planet gears 212 through the oil passages on the planet pins 213 to lubricate the bearings.

Fig. 8 is a schematic structural view of the oil control ring 120 in the lubricating structure 100 according to this embodiment, and fig. 9 is a schematic sectional structural view of the oil control ring 120 in the lubricating structure 100 according to this embodiment. Referring to fig. 1 to 9, in the present embodiment, the oil guiding passage 121 includes an oil inlet groove 122 and an oil outlet hole 123 that are communicated with each other, the oil inlet groove 122 is a strip structure extending along the circumferential direction of the oil distribution ring 120, and the oil inlet groove 122 is communicated with the sealing oil chamber 133. The oil outlet 123 extends in the circumferential direction of the oil distribution ring 120 and penetrates the friction end surface 125, so that the part of the lubricating oil flowing out of the oil guide passage 121 lubricates the relative movement between the friction end surface 125 and the floating carrier 150, and reduces wear.

Specifically, the oil inlet groove 122 is a strip-shaped groove formed by inwardly recessing the inner peripheral wall of the oil distribution ring 120, one end of which located at the inner peripheral wall of the oil distribution ring 120 communicates with the seal oil chamber 133, the other end communicates with the oil outlet hole 123 located in the oil distribution ring 120, and the oil outlet hole 123 is a hole extending in the radial direction of the oil distribution ring 120.

Further, the number of the oil guide channels 121 is multiple, and the multiple oil guide channels 121 are distributed along the circumferential direction of the oil distribution ring 120, so that the multiple oil guide channels 121 are simultaneously communicated with the oil inlet channel 111 through the sealing oil cavity 133, and the lubricating effect is ensured. Specifically, in the present embodiment, the number of oil guide passages 121 is three, and the three oil guide passages 121 are uniformly distributed along the circumferential direction of the oil distribution ring 120.

In this embodiment, the elastic member 130 further includes a spring 134. The seat body 115 of the oil distribution ring seat 110 is provided with a first spring mounting hole 116, and one end of the oil distribution ring 120 away from the friction end surface 125, that is, one end of the oil distribution ring 120 close to the seat body 115 is provided with a second spring mounting hole 126. Both ends of the spring 134 are respectively mounted to the first spring mounting hole 116 and the second spring mounting hole 126 to apply an elastic force away from the seat portion 115 to the oil control ring 120 through the spring 134, thereby pressing the oil control ring 120 against the mating surface 153 of the floating carrier 150, ensuring the reliability of the supply of the lubricating oil between the oil control ring 120 and the floating carrier 150.

Further, the number of the springs 134 is plural, and correspondingly, the number of the first spring mounting holes 116 and the second spring mounting holes 126 is also plural, the plural first spring mounting holes 116 and the plural second spring mounting holes 126 are in one-to-one correspondence to form a space for mounting the plural springs 134, the plural first spring mounting holes 116 are uniformly distributed along the circumferential direction of the oil distribution ring base 110, the plural second spring mounting holes 126 are uniformly distributed along the circumferential direction of the oil distribution ring base 110, the oil distribution ring base 110 is coaxially arranged with the oil distribution ring 120, the plural springs 134 thus mounted are uniformly distributed along the circumferential direction of the oil distribution ring 120, and it is ensured that the abutting force between each position of the oil distribution ring 120 and the floating carrier 150 is substantially the same. In the present embodiment, the number of the springs 134 is nine, and accordingly, the number of the first spring mounting holes 116 and the second spring mounting holes 126 is nine. It should be noted that, in other embodiments, the springs 134 and the number of the first spring mounting holes 116 and the second spring mounting holes 126 may be specifically set according to requirements.

Further, the lubrication structure 100 further includes a guide pin 141. The oil distribution ring seat 110 is provided with a first guide pin hole 117, one end of the oil distribution ring 120 away from the friction end surface 125 is provided with a second guide pin hole, one end of the guide pin 141 is in clearance fit with the first guide pin hole 117, and the other end of the guide pin 141 is in interference fit with the second guide pin hole. By providing the guide pin 141 between the oil distribution ring holder 110 and the oil distribution ring 120, it is possible to restrict the rotation of the oil distribution ring 120 relative to the oil distribution ring holder 110 and to guide the circumferential movement of the oil distribution ring 120 relative to the oil distribution ring holder 110. Meanwhile, since the guide pins 141 are in clearance fit with the first guide pin holes 117, a floating space of the oil distribution ring 120 with respect to the oil distribution ring seat 110 is secured.

Optionally, the number of the guide pins 141 is two, and accordingly, the number of the first guide pin holes 117 and the number of the second guide pin holes are two, and the two first guide pin holes 117 and the two second guide pin holes are arranged in one-to-one correspondence to form a space for installing the two guide pins 141. Meanwhile, the two guide pins 141 are symmetrically arranged with respect to the axis of the oil distribution ring 120, that is, a line connecting the centers of the two second guide pin holes passes through the center of the oil distribution ring 120. It is understood that in other embodiments, the number of the guide pins 141 may be set according to requirements, for example, the number of the guide pins 141 is set to one.

FIG. 10 is an enlarged view of a portion of the structure at X in FIG. 9. Referring to fig. 1 to 10, the structure shown in fig. 8 is a structure on the friction end surface 125 side of the oil distribution ring 120, in this embodiment, a plurality of wedge-shaped grooves 124 are formed on the friction end surface 125, the wedge-shaped grooves 124 are distributed along the circumferential direction of the oil distribution ring 120, and at least a portion of the wedge-shaped grooves 124 is communicated with the oil guide channel 121, so that after passing through the corresponding wedge-shaped groove 124, a portion of the lubricating oil flowing out of the oil guide channel 121 flows between the friction end surface 125 and the mating surface 153 to lubricate the relative movement between the friction end surface 125 and the mating surface 153, and another portion of the lubricating oil flows into the annular oil groove 151 and enters the floating planetary gear train 200 through the annular oil groove 151, thereby satisfying the lubricating requirements of each location.

By providing the wedge-shaped groove 124 on the friction end surface 125, when the floating planet carrier 150 and the oil distribution ring 120 rotate relatively, the lubricating oil can form an oil film on the matching surface 153 of the floating planet carrier 150, and the oil distribution ring 120 and the floating planet carrier 150 are separated by using the principle of a sliding bearing, so that the abrasion caused by the direct contact friction between the friction end surface 125 and the matching surface 153 is avoided.

It should be noted that, in the description of the present embodiment, the "wedge-shaped groove 124" is a groove structure in which the opening area of the groove in the direction close to the groove bottom (here, in the axial direction of the oil distribution ring 120 close to the oil distribution ring seat 110) is gradually reduced.

Optionally, the side wall of the wedge-shaped groove 124 is an inclined surface, that is, the side wall of the wedge-shaped groove 124 is disposed obliquely to the groove bottom surface, and an included angle between the side wall of the wedge-shaped groove 124 and the groove bottom surface is an obtuse angle. It will be appreciated that in other embodiments, the sidewalls of the wedge-shaped groove 124 may be curved to ensure that the groove structure is wedge-shaped.

Further, the wedge groove 124 is a strip-shaped structure extending along the radial direction of the oil distribution ring 120, so that a larger range of the friction end surface 125 of the oil distribution ring 120 can be covered by the circle of wedge groove 124, effective and reliable forming of an oil film is guaranteed, and abrasion of the friction end surface 125 in the operation process is reduced.

Fig. 11 is a schematic structural view of the oil spray pipe 160 in the lubricating structure 100 according to the present embodiment. Referring to fig. 1 to 11, in the present embodiment, the lubrication structure 100 further includes an oil injection pipe 160, two ends of the oil injection pipe 160 are respectively connected to the floating carrier 150, and the oil injection pipe 160 is communicated with the lubrication oil duct 152 of the floating carrier 150, so that a part of the lubrication oil entering the floating carrier 150 can flow into the oil injection pipe 160. Meanwhile, the oil injection pipe 160 is provided with a plurality of oil injection holes 162, and the oil injection holes 162 are used for injecting oil to the sun gear 211 of the floating planetary gear train 200, so that the meshing part of the sun gear 211 and the planetary gear 212 in the floating planetary gear train 200 is lubricated.

Specifically, oil spout pipe 160 includes body 161 and mounting panel 163, the one end of body 161 inserts in the floating planet carrier 150 and communicates with the lubricated oil duct 152 of floating planet carrier 150, floating planet carrier 150 is stretched out to the other end of body 161 to through mounting panel 163 fixed connection in the one side that floating planet carrier 150 kept away from fitting surface 153, so body 161 extends along the axial of floating planet carrier 150, and has seted up a plurality of nozzle 162 on the body 161, through nozzle 162 to sun gear 211 oil spout, in order to satisfy the lubricated demand of sun gear 211 with the planet gear 212 meshing department.

According to the lubricating structure 100 provided by the present embodiment, the operating principle of the lubricating structure 100 is as follows:

when the floating carrier 150 is in floating operation, the oil distribution ring 120 floats synchronously with the floating carrier 150, ensuring a stable lubricating oil supply path between the oil distribution ring 120 and the floating carrier 150. Moreover, a thrust sliding bearing structure is formed between the oil distribution ring 120 and the floating carrier 150, and when the floating carrier 150 rotates relative to the oil distribution ring 120, the friction end surface 125 of the oil distribution ring 120 does not directly contact with the matching surface 153 of the floating carrier 150, so that the abrasion is small. The oil distribution ring seat 110 is fixed relative to the oil inlet pipe 300, so that the oil inlet reliability is ensured, meanwhile, the elastic member 130 is arranged between the oil distribution ring seat 110 and the oil distribution ring 120, the floating amount of the oil distribution ring 120 relative to the oil distribution ring seat 110 is compensated through the elastic deformation of the elastic member 130, the oil inlet channel 111 of the oil distribution ring seat 110 is ensured to be communicated with the oil guide channel 121 of the oil distribution ring 120, and further, the effective lubrication of the floating planetary gear train 200 can be effectively realized.

The present embodiment provides a lubrication structure 100 with at least the following advantages:

in the lubricating structure 100 provided by the embodiment of the invention, the oil distribution ring seat 110 is arranged to realize stable communication with the oil inlet pipe 300, the oil distribution ring 120 is arranged to float synchronously with the floating planet carrier 150, so that stable communication of a lubricating oil passage between the oil distribution ring 120 and the floating planet carrier 150 is ensured, meanwhile, the elastic member 130 arranged between the oil distribution ring 120 and the oil distribution ring seat 110 can compensate floating amount through elastic deformation, and the communication stability between the oil distribution ring 120 and the oil distribution ring seat 110 is ensured, so that a stable oil path from the oil inlet pipe 300 to the floating planet carrier 150 is established, stable oil supply to the floating planet carrier 150 is ensured, and further stable lubrication of the floating planetary gear train 200 is ensured, and the lubricating effect is good.

The present embodiment also provides a gearbox including the lubrication structure 100 described above. Since the gearbox includes the lubrication structure 100 described above, there are also all the benefits of the lubrication structure 100.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.