CN214092989U - Planetary gear lubricating system, gearbox assembly and automobile - Google Patents
Planetary gear lubricating system, gearbox assembly and automobile Download PDFInfo
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- CN214092989U CN214092989U CN202022444796.3U CN202022444796U CN214092989U CN 214092989 U CN214092989 U CN 214092989U CN 202022444796 U CN202022444796 U CN 202022444796U CN 214092989 U CN214092989 U CN 214092989U
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Abstract
The utility model discloses a planetary gear lubricating system, gearbox assembly and car. The planetary gear lubricating system comprises an input shaft, a sun gear, a planet carrier, a planetary gear shaft, a planetary gear, a needle bearing and a planetary gear ring; the oil pump also comprises an adapter plate sleeved on the input shaft, and a first oil storage cavity is formed among the adapter plate, the sun gear and the input shaft; the input shaft is provided with an oil passage and a first oil hole, and the first oil hole is communicated with the oil passage and a first oil storage cavity; the sun gear is provided with a second oil hole communicated with the first oil storage cavity; the planet carrier and the planet gear shaft are matched to form a second oil storage cavity; an oil inlet hole and an oil outlet hole are formed in the planet gear shaft; the planet carrier is provided with a planet oil duct for communicating the second oil hole with the oil inlet hole; the planetary gear is provided with a third oil hole which is opposite to the oil outlet hole. The system can make the oil passage layout of the lubricating oil more compact and the structure simpler, and realize the integrated design with shorter axial length; other components are not required to be added, the device is simplified, and the cost is lower.
Description
Technical Field
The utility model relates to the field of automotive technology, especially, relate to a planetary gear lubricating system, gearbox assembly and car.
Background
The conventional automobile power system generally comprises a plurality of power sources such as a motor and an engine, and is coordinated and combined by mechanisms such as a planetary gear set and a clutch to form a plurality of working modes. The planet row is composed of a planet gear ring, a sun gear, a planet gear and a planet gear shaft, and according to the motion relation of the planet gear ring, the sun gear and the planet gear, the functions of separating the input shaft from the output shaft from a rigid transmission relation, realizing the homodromous or reverse transmission of the input shaft and the output shaft, changing the transmission ratio of the input shaft and the output shaft and the like can be realized. Due to the complexity of the structure and the working state of the planet row, the phenomena of gear tooth fatigue pitting, tooth root cracks, gear tooth fracture failure and the like are easy to occur, and the running precision, the transmission efficiency and the service life of an automobile power system are influenced. Therefore, the planet row must be ensured to be well lubricated so as to timely and effectively take away the heat energy generated on the surface of the friction pair and ensure that the surface temperature of the friction pair is in the normal working range, thereby avoiding the phenomena of performance reduction and even failure of the planet gear and the needle roller bearing of the planet gear due to ablation caused by high-temperature accumulation.
The planetary gear lubrication system realizes the lubrication and cooling of friction pairs such as a sun gear, a planetary gear ring, a planetary gear shaft, a needle bearing, the planetary gear and the like by axially installing a lubrication oil injection pipe on the gearbox. The design of the planetary gear lubrication system needs to arrange a lubrication oil injection pipe in the axial direction of the gearbox, increases the axial size arrangement, has strict requirements on the quantity of lubrication oil, and enables the lubrication oil not to be efficiently utilized, so that the structure is complex, the installation requirement is higher, and the cost is not low.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a planetary gear lubricating system, gearbox assembly and car to solve the big and with high costs problem of current planetary gear lubricating system assembly space.
The utility model provides a planetary gear lubrication system, which comprises an input shaft, a sun gear and a planet carrier sleeved on the input shaft, a planet gear shaft assembled on the planet carrier, a planet gear sleeved on the planet gear shaft and meshed with the sun gear, a needle bearing arranged between the planet gear shaft and the planet gear, and a planet gear ring arranged at the periphery of the planet gear and meshed with the planet gear; the oil pump also comprises an adapter plate sleeved on the input shaft, and a first oil storage cavity is formed among the adapter plate, the sun gear and the input shaft;
an oil passage and a first oil hole are formed in the input shaft, and the first oil hole is communicated with the oil passage and the first oil storage cavity;
the sun gear is provided with a second oil hole communicated with the first oil storage cavity;
the planet carrier and the planet gear shaft are matched to form a second oil storage cavity; the planetary gear shaft is provided with an oil inlet hole and an oil outlet hole; the planet carrier is provided with a planet oil duct for communicating the second oil hole with the oil inlet hole;
and a third oil hole which is opposite to the oil outlet hole is formed in the planetary gear.
Preferably, the planetary gear lubrication system further comprises a rotating shaft sleeve sleeved on the input shaft and the adapter plate, and a third oil storage cavity is formed among the rotating shaft sleeve, the input shaft and the adapter plate;
the first oil hole is formed in the input shaft corresponding to the third oil storage cavity;
an oil flowing gap is formed between the rotating shaft sleeve and the adapter plate;
the planet carrier and the sun gear are fitted on the rotating shaft sleeve.
Preferably, the rotary sleeve includes a first annular portion, a second annular portion extending from the first annular portion in an axial direction;
the inner wall of the first annular part is fixedly connected with the input shaft through a spline, and the outer wall of the first annular part is fixedly connected with the planet carrier through a spline;
and an oil flowing gap is formed between the inner wall of the second annular part and the adapter plate, and the outer wall of the second annular part is fixedly connected with the sun gear through a spline.
Preferably, the adapter plate comprises an annular connecting portion, and an adapter baffle portion extending from the annular connecting portion in a radial direction;
the inner wall of the annular connecting part is fixedly connected with the input shaft through a spline, and the outer wall of the annular connecting part is matched with the second annular part to form the oil flowing gap;
the switching baffle part is far away from the tail end of the annular connecting part and is fixedly connected with the sun gear through a clamp spring structure.
Preferably, a distance from an inner wall of the first annular portion to an axial center of the input shaft is smaller than a distance from an inner wall of the second annular portion to an axial center of the input shaft.
Preferably, the planet carrier comprises a first supporting plate and a second supporting plate which are arranged oppositely, and a connecting plate for connecting the first supporting plate and the second supporting plate, wherein the first supporting plate is fixedly connected with the rotating shaft sleeve through a spline;
the first supporting plate is provided with a first mounting hole, the second supporting plate is provided with a second mounting hole matched with the first mounting hole, and the planet gear shaft is assembled in the first mounting hole and the second mounting hole;
an oil storage groove is formed in the planet gear shaft, and the opening end of the oil storage groove is arranged on the second mounting hole;
the planet carrier is further provided with a gasket, the gasket is opposite to the opening end of the oil storage groove and is in sealing connection with the planet gear shaft to form the second oil storage cavity.
Preferably, the planetary oil passage is an annular oil passage provided in the second support plate; the oil inlet hole and the oil outlet hole are arranged on the planet gear shaft along the radial direction.
Preferably, the planetary gear lubrication system further includes two retainer rings disposed between the planetary gear shaft and the planetary gear, and the needle bearing is disposed between the two retainer rings.
The utility model also provides a gearbox assembly, including above-mentioned planetary gear lubricating system.
The utility model also provides an automobile, including above-mentioned gearbox assembly.
The embodiment of the utility model provides a planetary gear lubricating system, gearbox assembly and car adopts input shaft and cover to establish the keysets on the input shaft with sun gear cooperation forms first oil storage chamber, utilizes the planet carrier and assembles the planet pinion cooperation on the planet carrier and form second oil storage chamber, is equipped with the planet oil duct that is used for communicateing first oil storage chamber with second oil storage chamber on the planet carrier, makes the oil duct overall arrangement of lubricating oil compacter, the structure is simpler, can make the derailleur assembly realize the shorter integral type integrated design of axial; and need not to increase other components or spout oil pipe and carry out the oil circuit and constitute, the device is more simplified, and cost economy is lower.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a cross-sectional view of a planetary gear lubrication system in an embodiment of the present invention;
fig. 2 is a schematic view of a planet carrier according to an embodiment of the present invention.
Fig. 3 is a schematic view of a planetary gear according to an embodiment of the present invention.
In the figure: 11. an input shaft; 111. an oil road channel; 112. a first oil hole; 12. a sun gear; 121. a second oil hole; 13. a planet carrier; 131. a planetary oil passage; 132. a first support plate; 133. a second support plate; 134. a connecting plate; 135. a first mounting hole; 136. a second mounting hole; 14. a planetary gear shaft; 141. an oil inlet hole; 142. an oil outlet hole; 15. a planetary gear; 151. a third oil hole; 16. a needle bearing; 17. a planetary gear ring; 18. an adapter plate; 181. an annular connecting portion; 182. a transfer baffle portion; 19. rotating the shaft sleeve; 191. a first annular portion; 192. a second annular portion; 21. a first oil storage chamber; 22. a second oil storage chamber; 23. a third oil storage chamber; 31. a clamp spring structure; 32. a gasket; 33. a limit ring.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment of the utility model provides a planetary gear lubricating system, this planetary gear lubricating system assembles on the gearbox assembly. As shown in fig. 1, the planetary gear lubrication system includes an input shaft 11, a sun gear 12 and a planet carrier 13 fitted over the input shaft 11, a planetary gear shaft 14 assembled to the planet carrier 13, a planetary gear 15 fitted over the planetary gear shaft 14 and engaged with the sun gear 12, a needle bearing 16 disposed between the planetary gear shaft 14 and the planetary gear 15, and a planetary ring gear 17 disposed at the periphery of the planetary gear 15 and engaged with the planetary gear 15; the oil pump also comprises an adapter plate 18 sleeved on the input shaft 11, and a first oil storage cavity 21 is formed among the adapter plate 18, the sun gear 12 and the input shaft 11; the input shaft 11 is provided with an oil passage 111 and a first oil hole 112, and the first oil hole 112 is communicated with the oil passage 111 and the first oil storage cavity 21; the sun gear 12 is provided with a second oil hole 121 communicated with the first oil storage chamber 21; the planet carrier 13 and the planet gear shaft 14 are matched to form a second oil storage cavity 22; an oil inlet hole 141 and an oil outlet hole 142 are formed in the planet pinion 14; the planet carrier 13 is provided with a planet oil passage 131 for communicating the second oil hole 121 and the oil inlet hole 141; the planetary gear 15 is provided with a third oil hole 151 (shown in fig. 3) disposed opposite to the oil outlet hole 142.
Understandably, when the planetary gear lubrication system works, lubricating oil on the oil passage 111 of the input shaft 11 can enter the adapter plate 18, the sun gear 12 and the input shaft 11 through the first oil hole 112 on the input shaft 11 to form a first oil storage cavity 21; in the process that the input shaft 11 drives the adapter plate 18 and the sun gear 12 to rotate, the lubricating oil contained in the first oil storage cavity 21 enters the planetary oil passage 131 in the planet carrier 13 through the second oil hole 121 on the sun gear 12 under the action of centrifugal force; then enters the planet carrier 13 through an oil inlet hole 141 communicated with the planet oil duct 131 and is matched with the planet gear shaft 14 to form a second oil storage cavity 22; in the process that the input shaft 11 drives the planet carrier 13 to rotate, the lubricating oil contained in the second oil storage cavity 22 enters the needle roller bearings 16 arranged between the planet gear shafts 14 and the planet gears 15 through the oil outlet holes 142 on the planet gear shafts 14 under the action of centrifugal force to lubricate the needle roller bearings 16; and then enters the third oil holes 151 of the planet gears 15 through the needle roller bearings 16, and enters the meshing surface between the planet gears 15 and the planet ring gear 17 and the meshing surface between the planet gears 15 and the sun gear 12, so that the lubricating and cooling of friction pairs such as the sun gear 12 and the planet gears 15, the planet gears 15 and the planet ring gear 17, the planet gear shafts 14 and the needle roller bearings 16, and the needle roller bearings 16 and the planet gears 15 are realized.
In the planetary gear lubrication system provided by the embodiment, the input shaft 11, the adapter plate 18 sleeved on the input shaft 11 and the sun gear 12 are matched to form the first oil storage cavity 21, the planet carrier 13 and the planetary gear shaft 14 assembled on the planet carrier 13 are matched to form the second oil storage cavity 22, and the planet carrier 13 is provided with the planet oil duct 131 for communicating the first oil storage cavity 21 with the second oil storage cavity 22, so that the oil duct layout of lubricating oil is more compact, the structure is simpler, and the transmission assembly can realize an integrated design with shorter axial direction; and need not to increase other components or spout oil pipe and carry out the oil circuit and constitute, the device is more simplified, and cost economy is lower.
In one embodiment, the planetary gear lubrication system further comprises a rotating shaft sleeve 19 sleeved on the input shaft 11 and the adapter plate 18, and a third oil storage cavity 23 is formed among the rotating shaft sleeve 19, the input shaft 11 and the adapter plate 18; the first oil hole 112 is provided in the input shaft 11 corresponding to the third oil storage chamber 23; an oil flowing gap is formed between the rotating shaft sleeve 19 and the adapter plate 18; the carrier 13 and the sun gear 12 are mounted on a rotary sleeve 19.
The rotary sleeve 19 is a sleeve for connecting the carrier 13 and the sun gear 12 to the input shaft 11. Understandably, the rotating shaft sleeve 19 is sleeved on the input shaft 11 and is fixedly connected with the input shaft 11, and the planet carrier 13 and the sun gear 12 are sleeved on the periphery of the rotating shaft sleeve 19 and are fixedly connected with the rotating shaft sleeve 19, so that the planet carrier 13 and the sun gear 12 which are fixedly connected with the rotating shaft sleeve 19 can correspondingly rotate in the process that the input shaft 11 drives the rotating shaft sleeve 19 to rotate, and the basic function of the planet row is realized.
In this example, a third oil storage chamber 23 is formed among the rotary shaft sleeve 19, the input shaft 11 and the adapter plate 18, a first oil hole 112 is formed on the input shaft 11 corresponding to the third oil storage chamber 23, and an oil flowing gap is formed between the rotary shaft sleeve 19 and the adapter plate 18, so that the lubricating oil on the oil passage 111 of the input shaft 11, after entering the third oil storage chamber 23 through the first oil hole 112 of the input shaft 11, the oil enters the first oil storage chamber 21 through the oil flow gap formed between the rotating sleeve 19 and the adapter plate 18, then enters the second oil storage chamber 22 through the planetary oil passages 131 of the planet carrier 13, during the rotation of the planet carrier 13 driven by the input shaft 11, the lubricating oil contained in the second oil storage chamber 22 is subjected to the action of centrifugal force, the oil outlet hole 142 on the planet gear shaft 14 enters the needle roller bearing 16 arranged between the planet gear shaft 14 and the planet gear 15 to lubricate the needle roller bearing 16; and then enters the third oil holes 151 of the planet gears 15 through the needle roller bearings 16, and enters the meshing surface between the planet gears 15 and the planet ring gear 17 and the meshing surface between the planet gears 15 and the sun gear 12, so that the lubricating and cooling of friction pairs such as the sun gear 12 and the planet gears 15, the planet gears 15 and the planet ring gear 17, the planet gear shafts 14 and the needle roller bearings 16, and the needle roller bearings 16 and the planet gears 15 are realized. Understandably, the third oil storage cavity 23 and the oil flow gap are communicated with the first oil hole 112 and the first oil storage cavity 21 on the input shaft 11, so that the oil passage layout of the whole planetary gear lubrication system is more compact and the structure is simpler, and the gearbox assembly realizes an integrated design with shorter axial direction.
In one embodiment, the rotating sleeve 19 includes a first annular portion 191, a second annular portion 192 extending from the first annular portion 191 in an axial direction; the inner wall of the first annular part 191 is fixedly connected with the input shaft 11 through a spline, and the outer wall of the first annular part 191 is fixedly connected with the planet carrier 13 through a spline; an oil flowing gap is formed between the inner wall of the second annular portion 192 and the adapter plate 18, and the outer wall of the second annular portion 192 is fixedly connected with the sun gear 12 through a spline.
In this example, the rotating shaft sleeve 19 includes a first annular portion 191 and a second annular portion 192 that are integrally formed, that is, the rotating shaft sleeve 19 includes a first annular portion 191 and a second annular portion 192 that extends from the first annular portion 191 in an axial direction, and both the first annular portion 191 and the second annular portion 192 are fitted over the input shaft 11. In this example, the inner wall of the first annular portion 191 is fixedly connected with the input shaft 11 through a spline, the outer wall of the first annular portion 191 is fixedly connected with the planet carrier 13 through a spline, and the outer wall of the second annular portion 192 is fixedly connected with the sun gear 12 through a spline, so that the planet carrier 13 and the sun gear 12 form an integrated structure with the input shaft 11 through the rotating shaft sleeve 19, and can rotate under the driving of the input shaft 11, and the function of the planet row is ensured to be realized. Understandably, the oil flow gap formed between the inner wall of the second annular portion 192 and the adapter plate 18 is helpful to realize more compact oil passage layout and simpler structure of the whole planetary gear lubrication system, so that the transmission assembly realizes an integrated design with shorter axial length.
In one embodiment, the adapter plate 18 includes an annular connecting portion 181, an adapter baffle portion 182 extending in a radial direction from the annular connecting portion 181; the inner wall of the annular connecting part 181 is fixedly connected with the input shaft 11 through a spline, and the outer wall of the annular connecting part 181 is matched with the second annular part 192 to form an oil flowing gap; the end of the switching baffle portion 182, which is far away from the annular connecting portion 181, is fixedly connected to the sun gear 12 through the snap spring structure 31.
In this example, the adapter plate 18 includes an annular connecting portion 181 and an adapter baffle portion 182 that are integrally formed, that is, the adapter plate 18 includes the annular connecting portion 181 and the adapter baffle portion 182 extending from the annular connecting portion 181 in the radial direction, specifically, the annular connecting portion 181 and the adapter baffle portion 182 extending from the end of the annular connecting portion 181 in the radial direction at a predetermined angle. In this example, the predetermined angle of the cross-section of the annular connecting portion 181 and the transfer baffle portion 182 is an obtuse angle, and may be 145 degrees, for example.
In this example, the inner wall of the annular connecting portion 181 is fixedly connected to the input shaft 11 through a spline, so that the adapter plate 18 and the input shaft 11 form an integral structure and can be driven by the input shaft 11 to rotate; the adapter baffle portion 182 is far away from the end of the annular connecting portion 181, and is fixedly connected with the sun gear 12 through the snap spring structure 31, so that the adapter plate 18 and the sun gear 12 are sealed and fixedly connected, and the sealing performance of the first oil storage chamber 21 formed among the adapter plate 18, the sun gear 12 and the input shaft 11 is ensured. Because the annular connecting portion 181 of the adapter plate 18 is fixedly connected with the input shaft 11 through the spline, and the sun gear 12 is fixedly connected with the second annular portion 192 of the rotary shaft sleeve 19 through the spline, the first annular portion 191 of the rotary shaft sleeve 19 is fixedly connected with the input shaft 11 through the spline, so that the input shaft 11 can drive the adapter plate 18 and the sun gear 12 to rotate simultaneously, and the lubricating oil in the first oil storage cavity 21 formed among the adapter plate 18, the sun gear 12 and the input shaft 11 can enter the planet oil duct 131 of the planet carrier 13 through the second oil hole 121 on the sun gear 12 under the action of centrifugal force. Understandably, the outer wall of the annular connecting portion 181 is matched with the inner wall of the second annular portion 192 to form an oil flow gap, which is helpful for realizing more compact oil passage layout and simpler structure of the whole planetary gear lubrication system, thereby realizing the integrated design with shorter axial length of the transmission assembly.
In one embodiment, the distance from the inner wall of the first annular portion 191 to the axial center of the input shaft 11 is smaller than the distance from the inner wall of the second annular portion 192 to the axial center of the input shaft 11.
In this example, the rotary sleeve 19 includes a first annular portion 191 and a second annular portion 192 formed integrally, it is possible to arrange that the inner wall of the first annular portion 191 is not flush with the inner wall of the second annular portion 192, and the distance from the inner wall of the first annular portion 191 to the axial center of the input shaft 11 is smaller than the distance from the inner wall of the second annular portion 192 to the axial center of the input shaft 11, which is a design, the clearance formed between the inner wall of the second annular portion 192 and the outer wall of the input shaft 11 can be made larger than the clearance formed between the inner wall of the first annular portion 191 and the outer wall of the input shaft 11, facilitating the fitting of the adapter plate 18 in the clearance formed between the inner wall of the second annular portion 192 and the outer wall of the input shaft 11, the oil flow gap formed between the inner wall of the second annular portion 192 and the adapter plate 18 is beneficial to realizing more compact oil passage layout and simpler structure of the whole planetary gear lubrication system, so that the gearbox assembly realizes an integrated design with shorter axial length.
In an embodiment, as shown in fig. 2, the planet carrier 13 includes a first supporting plate 132 and a second supporting plate 133 which are oppositely arranged, and a connecting plate 134 for connecting the first supporting plate 132 and the second supporting plate 133, wherein the first supporting plate 132 is fixedly connected with the rotating shaft sleeve 19 through a spline; the first supporting plate 132 is provided with a first mounting hole 135, the second supporting plate 133 is provided with a second mounting hole 136 matched with the first mounting hole 135, and the planet pinion 14 is assembled in the first mounting hole 135 and the second mounting hole 136; an oil storage groove is formed in the planet pinion 14, and the opening end of the oil storage groove is arranged on the second mounting hole 136; the planet carrier 13 is further provided with a gasket 32, and the gasket 32 is arranged opposite to the open end of the oil storage groove and is connected with the planet gear shaft 14 in a sealing manner to form a second oil storage cavity 22.
In this example, the planet carrier 13 includes a first support plate 132 and a second support plate 133 that are disposed in parallel and opposite to each other, the first support plate 132 and the second support plate 133 are connected by a connecting plate 134, so that the planet carrier 13 forms an integrated structure, the first support plate 132 is fixedly connected with the rotating shaft sleeve 19 by a spline, so that the planet carrier 13 and the rotating shaft sleeve 19 form an integrated structure, and the input shaft 11 can drive the planet carrier 13 to rotate together by the rotating shaft sleeve 19.
In this example, the first support plate 132 is provided with a first mounting hole 135, the second support plate 133 is provided with a second mounting hole 136 matching with the first mounting hole 135, and the planet pinion 14 is assembled in the first mounting hole 135 and the second mounting hole 136, so that the fixed connection between the planet pinion 14 and the planet carrier 13 can be realized.
In this example, an oil storage groove is formed in the planet pinion 14, an opening end of the oil storage groove is formed in the second mounting hole 136, correspondingly, a gasket 32 is further formed in the planet carrier 13, the gasket 32 is arranged opposite to the opening end of the oil storage groove and is in sealing connection with the planet pinion 14, and the second oil storage cavity 22 is formed, so that the sealing performance of the second oil storage cavity 22 is guaranteed, and the lubricating oil contained in the second oil storage cavity 22 is prevented from leaking.
In one embodiment, the planetary oil passage 131 is an annular oil passage provided in the second support plate 133; the oil inlet hole 141 and the oil outlet hole 142 are provided in the radial direction on the pinion shaft 14.
In this example, the planetary oil passage 131 is an annular oil passage provided on the second support plate 133; and the planet pinion 14 is provided with the oil inlet 141 and the oil outlet 142 along the radial direction, compare in and set up oil inlet 141 and oil outlet 142 along the axial direction for the oil duct layout of lubricating oil is compacter, the structure is simpler, can make the transmission assembly realize the shorter integral type integrated design of axial. Understandably, the oil inlet hole 141 is provided at a radial position corresponding to the second mounting hole 136 of the second support plate 133 so that the oil inlet hole 141 of the pinion shaft 14 communicates with the annular oil passage of the second support plate 133.
In an embodiment, the planetary gear lubrication system further comprises two limit rings 33 arranged between the planet gear shafts 14 and the planet gears 15, the needle bearing 16 being arranged between the two limit rings 33.
In this example, two retainer rings 33 are provided between the pinion shaft 14 and the pinion gear 15, and the needle bearing 16 can be disposed between the two retainer rings 33, so that the needle bearing 16 can be prevented from falling off, and the lubricating oil that enters between the needle bearings 16 can be prevented from leaking, and the lubricating oil that enters the third oil hole 151 of the pinion gear 15 from the needle bearing 16 is reduced, thereby affecting the lubricating and cooling of the friction pairs such as the sun gear 12 and the pinion gear 15, the pinion gear 15 and the planetary ring gear 17, the pinion shaft 14 and the needle bearing 16, and the needle bearing 16 and the pinion gear 15, and ensuring the lubricating and cooling effects.
An embodiment of the utility model provides a gearbox assembly is still provided, gearbox assembly includes above-mentioned implementation routine planetary gear lubricating system. The planetary gear lubrication system adopts the input shaft 11, the adapter plate 18 sleeved on the input shaft 11 and the sun gear 12 to form a first oil storage cavity 21 in a matching way, the planet carrier 13 and the planetary gear shaft 14 assembled on the planet carrier 13 are matched to form a second oil storage cavity 22, and the planet carrier 13 is provided with a planet oil passage 131 for communicating the first oil storage cavity 21 and the second oil storage cavity 22, so that the oil passage layout of lubricating oil is more compact, the structure is simpler, and the transmission assembly can realize an integrated design with shorter axial direction; and need not to increase other components or spout oil pipe and carry out the oil circuit and constitute, the device is more simplified, and cost economy is lower.
Embodiments of the present invention further provide an automobile, wherein the automobile comprises the transmission assembly in the above embodiments, and the transmission assembly comprises the above implementation of the routine planetary gear lubrication system. The planetary gear lubrication system adopts the input shaft 11, the adapter plate 18 sleeved on the input shaft 11 and the sun gear 12 to form a first oil storage cavity 21 in a matching way, the planet carrier 13 and the planetary gear shaft 14 assembled on the planet carrier 13 are matched to form a second oil storage cavity 22, and the planet carrier 13 is provided with a planet oil passage 131 for communicating the first oil storage cavity 21 and the second oil storage cavity 22, so that the oil passage layout of lubricating oil is more compact, the structure is simpler, and the transmission assembly can realize an integrated design with shorter axial direction; and need not to increase other components or spout oil pipe and carry out the oil circuit and constitute, the device is more simplified, and cost economy is lower.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A planetary gear lubrication system comprises an input shaft, a sun gear and a planet carrier which are sleeved on the input shaft, a planetary gear shaft assembled on the planet carrier, a planetary gear which is sleeved on the planetary gear shaft and meshed with the sun gear, a needle bearing arranged between the planetary gear shaft and the planetary gear, and a planetary gear ring which is arranged at the periphery of the planetary gear and meshed with the planetary gear; the oil pump is characterized by further comprising an adapter plate sleeved on the input shaft, wherein a first oil storage cavity is formed among the adapter plate, the sun gear and the input shaft;
an oil passage and a first oil hole are formed in the input shaft, and the first oil hole is communicated with the oil passage and the first oil storage cavity;
the sun gear is provided with a second oil hole communicated with the first oil storage cavity;
the planet carrier and the planet gear shaft are matched to form a second oil storage cavity; the planetary gear shaft is provided with an oil inlet hole and an oil outlet hole; the planet carrier is provided with a planet oil duct for communicating the second oil hole with the oil inlet hole;
and a third oil hole which is opposite to the oil outlet hole is formed in the planetary gear.
2. A planetary gear lubrication system as in claim 1 further comprising a rotating sleeve disposed over said input shaft and said adapter plate, wherein a third oil reservoir is formed between said rotating sleeve, said input shaft and said adapter plate;
the first oil hole is formed in the input shaft corresponding to the third oil storage cavity;
an oil flowing gap is formed between the rotating shaft sleeve and the adapter plate;
the planet carrier and the sun gear are fitted on the rotating shaft sleeve.
3. A planetary gear lubrication system as in claim 2 wherein the rotating sleeve comprises a first annular portion, a second annular portion extending in an axial direction from the first annular portion;
the inner wall of the first annular part is fixedly connected with the input shaft through a spline, and the outer wall of the first annular part is fixedly connected with the planet carrier through a spline;
and an oil flowing gap is formed between the inner wall of the second annular part and the adapter plate, and the outer wall of the second annular part is fixedly connected with the sun gear through a spline.
4. A planetary gear lubrication system as in claim 3 wherein the adapter plate comprises an annular connection portion, an adapter baffle portion extending in a radial direction from the annular connection portion;
the inner wall of the annular connecting part is fixedly connected with the input shaft through a spline, and the outer wall of the annular connecting part is matched with the second annular part to form the oil flowing gap;
the switching baffle part is far away from the tail end of the annular connecting part and is fixedly connected with the sun gear through a clamp spring structure.
5. A planetary gear lubrication system as claimed in claim 3, wherein a distance from an inner wall of said first annular portion to an axial center of said input shaft is smaller than a distance from an inner wall of said second annular portion to an axial center of said input shaft.
6. The planetary gear lubrication system as claimed in claim 2, wherein said planet carrier comprises a first support plate and a second support plate which are oppositely arranged, a connecting plate for connecting said first support plate and said second support plate, said first support plate being fixedly connected with said rotary sleeve by a spline;
the first supporting plate is provided with a first mounting hole, the second supporting plate is provided with a second mounting hole matched with the first mounting hole, and the planet gear shaft is assembled in the first mounting hole and the second mounting hole;
an oil storage groove is formed in the planet gear shaft, and the opening end of the oil storage groove is arranged on the second mounting hole;
the planet carrier is further provided with a gasket, the gasket is opposite to the opening end of the oil storage groove and is in sealing connection with the planet gear shaft to form the second oil storage cavity.
7. The planetary gear lubrication system according to claim 6, wherein the planetary oil passage is an annular oil passage provided in the second support plate; the oil inlet hole and the oil outlet hole are arranged on the planet gear shaft along the radial direction.
8. The planetary gear lubrication system as in claim 1 further comprising two retaining rings disposed between the planet pinion and the planet gear, the needle bearing being disposed between the two retaining rings.
9. A gearbox assembly comprising a planetary gear lubrication system as claimed in any one of claims 1 to 8.
10. An automobile comprising a gearbox assembly according to any one of claims 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444796.3U CN214092989U (en) | 2020-10-28 | 2020-10-28 | Planetary gear lubricating system, gearbox assembly and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444796.3U CN214092989U (en) | 2020-10-28 | 2020-10-28 | Planetary gear lubricating system, gearbox assembly and automobile |
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| Publication Number | Publication Date |
|---|---|
| CN214092989U true CN214092989U (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022444796.3U Active CN214092989U (en) | 2020-10-28 | 2020-10-28 | Planetary gear lubricating system, gearbox assembly and automobile |
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| Country | Link |
|---|---|
| CN (1) | CN214092989U (en) |
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