CN210890028U - Transmission with lubricating structure - Google Patents
Transmission with lubricating structure Download PDFInfo
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- CN210890028U CN210890028U CN201921450135.2U CN201921450135U CN210890028U CN 210890028 U CN210890028 U CN 210890028U CN 201921450135 U CN201921450135 U CN 201921450135U CN 210890028 U CN210890028 U CN 210890028U
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- shaft
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- input shaft
- lubricating oil
- transmission
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Abstract
The application provides a derailleur with lubricating structure, the derailleur includes casing and transmission shaft, and the transmission shaft includes coaxial input shaft and the output shaft that sets up, and the jackshaft is located the below of output shaft. In the shell, a bearing outside the intermediate shaft is immersed in lubricating oil, the lubricating oil is driven to splash to a rib plate arranged in the first cavity in the process of high-speed operation, and the lubricating oil enters the second cavity through the first through hole, so that a rear end bearing of the input shaft and a front end bearing of the output shaft are lubricated; lubricating oil in the second cavity enters the input shaft with a hollow structure, and under the high-speed operation of the input shaft, the lubricating oil enters the third cavity through the second through hole to lubricate a front end bearing of the input shaft; in addition, part of the splashed lubricating oil enters the rear end bearing of the output shaft through the third through hole to lubricate the rear end bearing of the output shaft. Therefore, in the transmission provided by the application, each bearing can obtain a better lubricating effect, so that the service life of each bearing in the transmission is prolonged.
Description
Technical Field
The application relates to the technical field of transmission structures, in particular to a transmission with a lubricating structure.
Background
At present, with the rapid development of electric vehicles, the design of an AMT (automated mechanical transmission) transmission is more and more emphasized by people, and the requirement for the service life of the transmission is more and more high. The service life of the transmission is limited by the service life of wearing parts in the transmission, so that the service life of the wearing parts needs to be prolonged to prolong the service life of the transmission. The bearing is taken as one of the wearing parts, and the key factor influencing the service life of the bearing is whether the lubrication condition of the bearing is good or not.
The lubrication mode of the bearing in the speed changer mainly comprises splash lubrication, forced lubrication and immersion lubrication. The light-duty pure electric commercial automobile of operation in the existing market mostly adopts the mode of the lubrication that splashes, relies on the high-speed operation of gear, stirs lubricating oil, splashes to lubricated position under the effect of centrifugal force, but at the actual vehicle operation in-process, adopts this kind of lubrication mode, has partial bearing and can not reach good lubricated effect, and the bearing damages easily, influences the life of derailleur. And the forced lubrication mode is adopted, although the lubricating oil can be sprayed into the part to be lubricated by external equipment at a certain pressure, so that the lubrication effect is enhanced, the lubrication mode has high cost and is difficult to be widely applied. In addition, the immersion lubrication requires the bearing to be soaked in lubricating oil for a long time, and under the condition of considering the transmission efficiency of the transmission, part of the bearing in the transmission can adopt the lubrication mode, namely, part of the bearing is not immersed in the lubricating oil, and the part of the bearing is easy to damage due to poor lubrication effect. Therefore, there is a need to develop a transmission having a good lubricating effect.
SUMMERY OF THE UTILITY MODEL
The application provides a derailleur with lubricating structure to solve the problem that some axle bearings among the current derailleur damaged because the lubricated effect is not good.
The present application provides a transmission having a lubricating structure, including: a housing and a drive shaft disposed within the housing, wherein,
the surface of the transmission shaft is provided with a plurality of gears, each gear is sleeved on the outer surface of a bearing, each bearing is sleeved on the outer surface of the transmission shaft, and the bearings are used for supporting the transmission shaft and driving the gears to rotate;
the transmission shaft comprises an input shaft, an output shaft and an intermediate shaft, the input shaft and the output shaft are coaxial, the intermediate shaft is positioned below the output shaft, and the input shaft controls the rotating speed of the output shaft through the intermediate shaft;
the middle shaft is immersed in lubricating oil, the liquid level of the lubricating oil is at least immersed into the central axis of the middle shaft, and the lubricating oil is driven to flow into the bearings outside the middle shaft in the process of high-speed rotation of the bearings sleeved on the outer surface of the middle shaft;
the output shaft and the intermediate shaft are both arranged in a first cavity, a second cavity is formed in a gap between the input shaft and the output shaft, the first cavity is communicated with the second cavity through a first through hole, a rib plate is horizontally arranged at the top of the first cavity, the tail end of the rib plate corresponds to the first through hole in the vertical direction, the rib plate is used for receiving lubricating oil splashed in the high-speed rotation process of the intermediate shaft, and the lubricating oil on the surface of the rib plate passes through the first through hole along the tail end of the rib plate and flows into the second cavity, so that a rear end bearing of the input shaft and a front end bearing of the output shaft are lubricated;
a third cavity is formed between the front end bearing of the input shaft and the shell, the input shaft is of a hollow structure, the rear end of the input shaft is communicated with the second cavity, the interior of the input shaft is communicated with the third cavity through a second through hole, and lubricating oil in the second cavity flows to the third cavity through the second through hole along the interior of the input shaft, so that the front end bearing of the input shaft is lubricated;
the rear end bearing of the output shaft is communicated with the first cavity through a third through hole, and the third through hole is used for receiving lubricating oil splashed in the high-speed rotating process of the intermediate shaft so as to lubricate the rear end bearing of the output shaft.
Optionally, one end of the rib plate is fixedly connected with the inner wall of the first cavity, and the upper surface of the rib plate is inclined towards the bottom of the first cavity from the joint of the rib plate and the first cavity to the tail end of the rib plate.
Optionally, the surface inclination angle of the rib plate is 5-10 °.
Optionally, the number of the second through holes is at least four, and the second through holes are uniformly distributed in a direction perpendicular to the central axis of the input shaft.
In view of the above technical solutions, the present application provides a transmission with a lubricating structure, the transmission includes a housing and a transmission shaft, the transmission shaft includes an input shaft and an output shaft that are coaxially disposed, and an intermediate shaft is located below the output shaft and is used for transmitting power of the input shaft to the output shaft. In the shell, a bearing outside the intermediate shaft is lubricated in a dip lubrication mode, a gear outside the intermediate shaft drives lubricating oil to splash to a rib plate arranged in the first cavity in the process of high-speed operation, and the lubricating oil enters the second cavity through the first through hole, so that a rear end bearing of the input shaft and a front end bearing of the output shaft are lubricated; lubricating oil in the second cavity is gradually increased in an accumulated state, so that the increased lubricating oil enters the input shaft with a hollow structure, the lubricating oil entering the input shaft enters the third cavity through the second through hole under the high-speed operation of the input shaft, and a front end bearing of the input shaft is arranged in the third cavity, so that the front end bearing of the input shaft is lubricated; the lubricating oil that splashes that the jackshaft formed when rotating at a high speed, partly can get into the rear end bearing of output shaft through the third through-hole for the rear end bearing of output shaft can lubricate. Therefore, in the transmission with the lubricating structure provided by the application, each bearing can obtain a better lubricating effect, so that the service life of each bearing in the transmission can be prolonged.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a transmission having a lubrication feature according to an embodiment of the present application;
fig. 2 is an enlarged schematic view of a portion in fig. 1 according to an embodiment of the present application.
Illustration of the drawings: 1-a shell; 2-a transmission shaft; 3-a gear; 4-a bearing; 5-a first cavity; 6-a second cavity; 7-rib plate; 8-a third cavity; 21-an input shaft; 22-an output shaft; 23-intermediate shaft; 51-a third via; 61-a first via; 81-second through hole.
Detailed Description
The present application will be described in detail below.
In the description of the present application, the terms "first", "second", and the like indicate components having moving functions described based on embodiments, and are only for convenience of description and simplification of the description, and do not imply or indicate that the components referred to must be named and thus cannot be construed as limitations of the present application.
Referring to the schematic structural diagram shown in fig. 1, the present application provides a transmission having a lubricating structure, including: a housing 1 and a transmission shaft 2 arranged inside the housing 1. The surface of transmission shaft 2 is provided with a plurality of gears 3, each the surface of bearing 4 is all located to gear 3 cover, each bearing 4 cover is located the surface of transmission shaft 2, bearing 4 is used for supporting transmission shaft 2, and drives gear 3 rotates.
The transmission shaft 2 comprises an input shaft 21, an output shaft 22 and an intermediate shaft 23, wherein the input shaft 21 is coaxial with the output shaft 22, the intermediate shaft 23 is positioned below the output shaft 22, and the input shaft 21 controls the rotation speed of the output shaft 22 through the intermediate shaft 23.
In the present application, the words indicating the orientation such as "upper", "lower", "front", "rear", etc. are described based on the structural diagram shown in fig. 1 or based on the transmission in a normal use state, and the words indicating the orientation are only for simplifying the description, and thus should not be construed as limiting the present application. In addition, "front end" and "rear end" described in the present application are simplified descriptions with respect to the direction of power conduction.
The application provides a derailleur with lubricating structure includes input shaft 21, output shaft 22 and countershaft 23, and the gear that is located countershaft 23 front end meshes with the gear of input shaft 21 front end mutually for input shaft 21 can drive countershaft 23 and rotate, and the rear end of countershaft 23 and the middle gear of middle meshes with the middle gear of output shaft 22 mutually, and in practical application, because the difference of gear, the position of gear engagement is different. Based on the design of input shaft, output shaft and countershaft, the casing of derailleur that this application provided adopts the structure of procapsid + middle casing + back casing, compares with the structure of traditional procapsid + back casing, and the derailleur reliability that this application provided is better, can alleviate the rotational speed that the jackshaft front end bearing bore, and the highest input rotational speed of the derailleur that this application provided is 12000 rpm.
The addition of an intermediate housing makes the input shaft 21 spaced apart from the output shaft 22, i.e. the input shaft 21 and the output shaft 22 are not inside the same cavity, and makes the gap between said input shaft 21 and said output shaft 22 form the second cavity 6.
The lubrication system and the lubrication method adopt a combined mode of dipping lubrication and splash lubrication to provide lubrication for each bearing in the transmission. The intermediate shaft 23 is immersed in the lubricating oil, the liquid level of the lubricating oil is at least immersed in the central axis of the intermediate shaft 23, and the lubricating oil is driven to flow into the bearings 4 outside the intermediate shaft 23 in the process of high-speed rotation of the bearings 4 sleeved on the outer surface of the intermediate shaft 23, so that the bearings 4 outside the intermediate shaft 23 are lubricated. That is, the bearings outside the intermediate shaft 23 are lubricated by immersion lubrication.
The output shaft 22 and the intermediate shaft 23 are both arranged in a first cavity 5, a second cavity 6 is formed in a gap between the input shaft 21 and the output shaft 22, the first cavity 5 and the second cavity 6 are communicated through a first through hole 61, a rib plate 7 is horizontally arranged at the top of the first cavity 5, the tail end of the rib plate 7 corresponds to the first through hole 61 in the vertical direction, the rib plate 7 is used for receiving lubricating oil splashed in the high-speed rotation process of the intermediate shaft 23, and the lubricating oil on the surface of the rib plate 7 passes through the first through hole 61 along the tail end of the rib plate 7 and flows into the second cavity 6, so that a rear end bearing of the input shaft 21 and a front end bearing of the output shaft 22 are lubricated.
Optionally, one end of the rib plate 7 is fixedly connected with the inner wall of the first cavity 5, and the upper surface of the rib plate 7 inclines towards the bottom of the first cavity 5 from the connection position of the rib plate 7 and the first cavity 5 to the tail end direction of the rib plate 7.
Optionally, the surface of the rib plate 7 is inclined at an angle of 5-10 °.
Referring to the schematic diagram shown in fig. 2, a third cavity 8 is formed between the front end bearing of the input shaft 21 and the housing 1, the input shaft 21 is of a hollow structure, the rear end of the input shaft is communicated with the second cavity 6, the interior of the input shaft 21 is communicated with the third cavity 8 through a second through hole 81, and the lubricating oil in the interior of the second cavity 6 flows to the third cavity 8 through the second through hole 81 along the interior of the input shaft 21, so that the front end bearing of the input shaft 21 is lubricated.
Optionally, the number of the second through holes 81 is at least four, and the second through holes 81 are uniformly distributed in a direction perpendicular to the central axis of the input shaft 21.
The rear end bearing of the output shaft 22 is communicated with the first cavity 5 through a third through hole 51, and the third through hole 51 is used for receiving lubricating oil splashed in the high-speed rotation process of the intermediate shaft 23 so as to lubricate the rear end bearing of the output shaft 22. In this application, the third through hole 51 is opened in the bearing seat of the output shaft rear end bearing. The gear on jackshaft 23 surface is at high-speed moving in-process, and partial lubricating oil is got rid of on the inner wall of first cavity 5 to flow to inside the third through-hole 51 along the inner wall of first cavity 5, the third through-hole 51 communicates with the rear end bearing of output shaft, makes lubricating oil get into inside the bearing frame of back casing through third through-hole 51, and then the rear end bearing of lubricated output shaft.
As can be seen from the above technical solutions, the present application provides a transmission with a lubricating structure, the transmission includes a housing 1 and a transmission shaft 2, the transmission shaft 2 includes an input shaft 21 and an output shaft 22 which are coaxially arranged, and an intermediate shaft 23 is located below the output shaft 22 and is used for transmitting power of the input shaft 21 to the output shaft 22. In the shell 1, a bearing outside the intermediate shaft 23 is lubricated in a dip lubrication mode, a gear outside the intermediate shaft 23 drives lubricating oil to splash to a rib plate arranged in the first cavity 5 in the process of high-speed operation, and the lubricating oil on the surface of the rib plate enters the second cavity 6 through the first through hole 61, so that a rear end bearing of the input shaft 21 and a front end bearing of the output shaft 22 are lubricated; the lubricating oil in the second cavity 6 is gradually increased in an accumulated state, so that the increased lubricating oil enters the input shaft 21 with a hollow structure, the lubricating oil entering the input shaft 21 enters the third cavity 8 through the second through hole 81 under the high-speed operation of the input shaft, and the front end bearing of the input shaft 21 is arranged in the third cavity 8, so that the front end bearing of the input shaft 21 is lubricated; a part of the splashed lubricating oil formed when the intermediate shaft 23 rotates at a high speed enters the rear end bearing of the output shaft 22 through the third through hole 51, so that the rear end bearing of the output shaft 22 is lubricated. Therefore, in the transmission with the lubricating structure provided by the application, each bearing can obtain a better lubricating effect, so that the service life of each bearing in the transmission can be prolonged.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (4)
1. A transmission having a lubricating structure, characterized by comprising: a housing (1) and a transmission shaft (2) arranged inside the housing (1), wherein,
the surface of the transmission shaft (2) is provided with a plurality of gears (3), each gear (3) is sleeved on the outer surface of a bearing (4), each bearing (4) is sleeved on the outer surface of the transmission shaft (2), and the bearings (4) are used for supporting the transmission shaft (2) and driving the gears (3) to rotate;
the transmission shaft (2) comprises an input shaft (21), an output shaft (22) and an intermediate shaft (23), the input shaft (21) is coaxial with the output shaft (22), the intermediate shaft (23) is positioned below the output shaft (22), and the input shaft (21) controls the rotating speed of the output shaft (22) through the intermediate shaft (23);
the middle shaft (23) is immersed in lubricating oil, the liquid level of the lubricating oil is at least immersed into the central axis of the middle shaft (23), and the lubricating oil is driven to flow into the bearings (4) outside the middle shaft (23) in the process that the bearings (4) sleeved on the outer surface of the middle shaft (23) rotate at high speed;
the output shaft (22) and the intermediate shaft (23) are both arranged inside the first cavity (5), the gap between the input shaft (21) and the output shaft (22) forms a second cavity (6), the first cavity (5) and the second cavity (6) are communicated through a first through hole (61), a rib plate (7) is horizontally arranged at the top of the first cavity (5), the tail end of the rib plate (7) corresponds to the first through hole (61) in the vertical direction, the rib plate (7) is used for bearing lubricating oil splashed in the high-speed rotation process of the intermediate shaft (23), lubricating oil on the surface of the rib plate (7) flows to the interior of the second cavity (6) along the tail end of the rib plate (7) through the first through hole (61), thereby lubricating a rear end bearing of the input shaft (21) and a front end bearing of the output shaft (22);
a third cavity (8) is formed between the front end bearing of the input shaft (21) and the shell (1), the input shaft (21) is of a hollow structure, the rear end of the input shaft is communicated with the second cavity (6), the interior of the input shaft (21) is communicated with the third cavity (8) through a second through hole (81), and lubricating oil in the second cavity (6) flows to the third cavity (8) along the interior of the input shaft (21) through the second through hole (81), so that the front end bearing of the input shaft (21) is lubricated;
the rear end bearing of the output shaft (22) is communicated with the first cavity (5) through a third through hole (51), and the third through hole (51) is used for receiving lubricating oil splashed in the high-speed rotation process of the intermediate shaft (23) so as to lubricate the rear end bearing of the output shaft (22).
2. The transmission according to claim 1, characterized in that one end of the rib (7) is fixedly connected with the inner wall of the first cavity (5), and the upper surface of the rib (7) is inclined towards the bottom of the first cavity (5) from the connection position of the rib (7) and the first cavity (5) to the tail end direction of the rib (7).
3. The transmission according to claim 2, characterized in that the surface of the rib (7) is inclined at an angle of 5-10 °.
4. Transmission according to claim 1, characterized in that the number of second through holes (81) is at least four, the second through holes (81) being evenly distributed in a direction perpendicular to the central axis of the input shaft (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921450135.2U CN210890028U (en) | 2019-09-03 | 2019-09-03 | Transmission with lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921450135.2U CN210890028U (en) | 2019-09-03 | 2019-09-03 | Transmission with lubricating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210890028U true CN210890028U (en) | 2020-06-30 |
Family
ID=71329885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921450135.2U Expired - Fee Related CN210890028U (en) | 2019-09-03 | 2019-09-03 | Transmission with lubricating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210890028U (en) |
-
2019
- 2019-09-03 CN CN201921450135.2U patent/CN210890028U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |