CN215861676U - Speed reducer lubricating system - Google Patents
Speed reducer lubricating system Download PDFInfo
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- CN215861676U CN215861676U CN202122022884.9U CN202122022884U CN215861676U CN 215861676 U CN215861676 U CN 215861676U CN 202122022884 U CN202122022884 U CN 202122022884U CN 215861676 U CN215861676 U CN 215861676U
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- intermediate shaft
- speed reducer
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Abstract
The utility model discloses a lubricating system of a speed reducer, wherein the speed reducer comprises a shell, and a main speed reducer and a differential mechanism which are arranged in the shell, the main speed reducer comprises an input shaft and an intermediate shaft, the lubricating system comprises an oil pump and a lubricating oil circulating pipeline, the lubricating oil circulating pipeline comprises an oil conveying pipe connected with the oil pump, the oil conveying pipe is connected with a main oil duct arranged on the shell, and lubricating oil enters an input shaft bearing and an intermediate shaft bearing through the oil conveying pipe and the main oil duct; the oil delivery pipe is also provided with an oil injection port, and the oil injection port faces to the meshing part of the input shaft gear and the intermediate shaft large gear. The utility model ensures that the whole speed reducer lubricating system is more reliable and has higher efficiency by optimizing the layout structure of active lubrication and splash lubrication.
Description
Technical Field
The utility model relates to the technical field of automobile speed reducer manufacturing, in particular to a speed reducer lubricating system.
Background
The speed reducer assembly usually consists of a main speed reducer and a differential mechanism which are of an integrated structure, and a speed reducer lubricating system is used for lubricating gears, bearings and the like in the whole operation process of the speed reducer assembly and preventing the phenomena of overheating, ablation and the like of an operation part due to lack of lubrication; the traditional speed reducer lubrication mostly adopts splash lubrication, an input shaft is used as a high point of the position of the speed reducer, the rotating speed is highest, the lubrication is limited frequently, and the input center and the output center of the speed reducer are high and narrow. The patent document with publication number CN111197649A, 5.26.2020 discloses a shell structure of a speed reducer and an electric vehicle, wherein the shell structure comprises a shell, a bearing is arranged on the shell, an oil guide plate is arranged on the inner side of the shell in the circumferential direction, the oil guide plate surrounds the periphery of the bearing and forms a lubricating loop, and the lubricating loop extends into the bearing so as to lubricate the bearing; so as to achieve the purposes of reducing friction, reducing abrasion and realizing lubrication and cooling; however, the oil passing holes are formed in the bearing chambers of the input bearing, the intermediate bearing and the differential bearing of the speed reducer shell in a slotting mode, splash lubrication is adopted to meet the assembly lubrication requirement, but the structure greatly weakens the rigidity of the bearing chambers, reduces the structural strength of the bearing chambers, and influences the change of the center distance of the assembly to finally cause the NVH (noise, vibration and harshness) to be poor. The publication date is 2018, 6 and 5, and the patent document with the publication number of CN207454732U discloses a speed reducer lubricating system, which comprises a speed reducer, an oil pump, a filtering device and a controller, wherein the speed reducer comprises a shell and a power input shaft, a lubricating oil circulation pipeline is arranged between the oil pump and the speed reducer, the lubricating oil circulation pipeline comprises an oil inlet pipe and an oil return pipe, the oil pump takes out lubricating oil in the speed reducer through the oil inlet pipe and sprays the taken-out lubricating oil to a kinematic pair in the shell through the oil return pipe, the oil pump is an electric oil pump, the filtering device is arranged to filter the lubricating oil in the lubricating oil circulation pipeline, and the controller is connected with the oil pump and used for controlling the start and stop of the oil pump. The lubricating system of the speed reducer can increase the circulating liquid amount of lubricating oil in the speed reducer, thereby improving the lubricating performance of the speed reducer, reducing the damage to the gear caused by the impact of impurities in the lubricating liquid on the gear, and improving the working reliability of the speed reducer. But the lubricating system of the speed reducer has larger oil stirring loss, and the efficiency of the speed reducer assembly is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of a speed reducer lubricating system in the prior art, and provides a speed reducer lubricating system, which is more reliable and has higher efficiency by optimizing the layout structure of active lubrication and splash lubrication.
The utility model adopts the technical scheme that the lubricating system of the speed reducer comprises a shell, and a main speed reducer and a differential mechanism which are arranged in the shell, wherein the main speed reducer comprises an input shaft and an intermediate shaft, the input shaft is provided with an input shaft gear, the intermediate shaft is provided with an intermediate shaft large gear and an intermediate shaft small gear, the intermediate shaft large gear is meshed with the input shaft gear, the intermediate shaft small gear is meshed with the differential mechanism large gear, the lubricating system comprises an oil pump and a lubricating oil circulating pipeline, the lubricating oil circulating pipeline comprises an oil pipeline connected with the oil pump, the oil pipeline is connected with a main oil duct arranged on the shell, and lubricating oil enters an input shaft bearing and an intermediate shaft bearing through the oil pipeline and the main oil duct; the oil delivery pipe is also provided with an oil injection port, and the oil injection port faces to the meshing part of the input shaft gear and the intermediate shaft large gear. According to the utility model, through the oil pump, the oil delivery pipe and the main oil duct arranged on the shell, lubricating oil is directly delivered into the input shaft bearing and the intermediate shaft bearing, and the input shaft bearing and the intermediate shaft bearing are actively lubricated; meanwhile, active lubrication is provided for the first-stage reduction gear through an oil injection port arranged on the oil conveying pipe; and for the places needing lubrication at the lower part of the speed reducer, such as a differential bearing and the like, the oil stirring at the lower part of the large gear of the differential is utilized to carry out the splash lubrication at the places needing lubrication at the lower part of the speed reducer, namely, the corresponding lubrication requirement is still met by mainly adopting the splash lubrication. Therefore, the utility model solves the problems that the input shaft is used as the high point of the position of the speed reducer, the rotating speed is highest, and the lubrication is limited, so that the input center and the output center of the speed reducer are high and the range is narrow in the splash lubrication mode adopted by the traditional speed reducer.
Preferably, the casing includes procapsid and back casing, the main oil gallery including set up the preceding main oil gallery in the procapsid and set up the back main oil gallery in the back casing, preceding main oil gallery set up on the upper portion of procapsid and be connected with defeated oil pipe, back main oil gallery be the L shape of invering, the horizontal segment of back main oil gallery sets up on the upper portion of back casing and links to each other with preceding main oil gallery. The front section of the main oil duct is located on the upper portion of the shell, lubricating oil conveyed by the oil pump firstly reaches the highest position of the shell, so that an input shaft located at the high point of the speed reducer can be lubricated conveniently, and then the main oil duct is inverted L-shaped, so that the lubricating oil can be conveyed to the intermediate shaft bearing conveniently.
Preferably, an input shaft oil guide pipe communicated with the rear main oil gallery is arranged in the input shaft, the input shaft bearing comprises an input shaft front bearing and an input shaft rear bearing, an input shaft front oil distributing passage is formed between the front end side of the input shaft and the front shell, and the front end of the input shaft oil guide pipe is connected with the input shaft front bearing through the input shaft front oil distributing passage; an input shaft rear oil distributing channel is formed between the rear end side of the input shaft and the rear shell, and the rear main oil channel is connected with an input shaft rear bearing through the input shaft rear oil distributing channel. The input shaft oil guide pipe is arranged in the input shaft, so that lubricating oil can be conveniently conveyed to two ends of the input shaft, and the input shaft front bearing and the input shaft rear bearing can be conveniently lubricated through the oil distributing passages arranged on the front end side and the rear end side of the input shaft.
Preferably, an intermediate shaft oil distributing passage is formed between the rear end side of the intermediate shaft and the rear shell, the intermediate shaft oil distributing passage is communicated with the lower end of the vertical section of the rear main oil passage, the intermediate shaft bearing comprises an intermediate shaft front bearing and an intermediate shaft rear bearing, and the rear main oil passage is connected with the intermediate shaft rear bearing through the intermediate shaft oil distributing passage. The middle shaft oil distributing channel is arranged on the rear end side of the middle shaft, and the lower end of the vertical section of the rear main oil channel is communicated with the middle shaft oil distributing channel, so that good lubrication can be provided for a rear bearing of the middle shaft.
Preferably, the outer peripheral wall of the differential bearing chamber is provided with an inclined hole, and the inclined hole forms an oil inlet channel for lubricating oil. The utility model adopts the inclined round holes to replace the oil passing holes arranged in the slotting mode in the prior art, so that the structural integrity of the outer peripheral wall of the differential bearing chamber can be ensured, lubricating oil can enter the bearing chamber, the structural strength of the bearing chamber can be ensured, and the NVH (noise vibration and harshness) deterioration caused by the fact that the slotting of the outer peripheral wall of the differential bearing chamber influences the change of the center distance of the assembly is avoided.
Preferably, an oil guide groove of a full-wrapping structure is arranged at the oil stirring position of the large gear of the differential. The oil guide groove is arranged at the oil stirring position of the large gear of the differential mechanism, so that the oil stirring loss of the large gear of the differential mechanism can be greatly reduced, and the efficiency of the speed reducer assembly is improved.
Preferably, a filter device is arranged on the lubricating oil circulation pipeline, and a filter element is arranged in the filter device. The filtering device can remove impurities in the lubricating oil, avoid the impurities from damaging the gear, and improve the reliability and the service life of the speed reducer.
The utility model has the beneficial effects that: 1. the input shaft bearing, the intermediate shaft bearing and the first-stage reduction gear are actively lubricated, and the input center and the output center of the speed reducer are high and wide in range; 2. each bearing chamber is of a full-circle structure, and the integral rigidity of the bearing chambers and the shell is high; 3. oil guide grooves are formed in the oil stirring positions of the large gear of the differential, so that oil stirring loss is greatly reduced, and the efficiency of the speed reducer assembly is increased.
Drawings
FIG. 1 is a cross-sectional view of a retarder lubrication system of the present invention;
FIG. 2 is a schematic view of an internal structure of the lubrication system of the speed reducer of the present invention;
FIG. 3 is a schematic view of a portion of the rear housing of the lubrication system of the speed reducer of the present invention.
In the figure: 1. the oil injection device comprises an input shaft, 2 intermediate shafts, 3 input shaft gears, 4 intermediate shaft large gears, 5 intermediate shaft small gears, 6 differential large gears, 7 oil delivery pipes, 8 oil injection ports, 9 front housings, 10 rear housings, 11 front main oil ducts, 12 rear main oil ducts, 13 input shaft oil guide pipes, 14 input shaft front bearings, 15 input shaft rear bearings, 16 input shaft front oil ducts, 17 input shaft rear oil ducts, 18 intermediate shaft oil ducts, 19 intermediate shaft front bearings, 20 intermediate shaft rear bearings, 21 inclined holes, 22 oil guide grooves, 23 differential front bearings, 24 differential rear bearings and 25 differentials.
Detailed Description
The following provides a further description of embodiments of the present invention by way of examples and with reference to the accompanying drawings.
Example 1
In the embodiment 1 shown in fig. 1 and 2, a reducer lubrication system comprises a housing and a main reducer and a differential 25 arranged in the housing, wherein the housing is formed by oppositely combining a front housing 9 and a rear housing 10; the main reducer is including the jackshaft 2 that is located input shaft 1 and the casing middle part on casing upper portion, is equipped with input shaft gear 3 on the input shaft, is equipped with jackshaft gear wheel 4 and jackshaft pinion 5 on the jackshaft, jackshaft gear wheel and input shaft gear engagement, jackshaft pinion and the differential gear big gear 6 meshing that is located the casing lower part, the oil is stirred to the lower part of differential gear big gear wheel, carries out splash lubrication to differential gear front bearing 23, differential gear rear bearing 24 of reduction gear lower part. An oil guiding groove 22 (a small arrow in fig. 2 indicates a flowing direction of lubricating oil, and a large arrow below indicates an oil stirring direction) of a full-wrapping structure is arranged at an oil stirring position of the large gear of the differential mechanism and used for reducing oil stirring loss of the large gear of the differential mechanism, so that the efficiency of the speed reducer assembly is improved. The peripheral wall of the bearing housing of the differential is provided with an inclined hole 21 (see fig. 3) which forms an oil inlet passage for lubricating oil. Therefore, the structural integrity of the peripheral wall outside the differential bearing chamber can be ensured, the splashed lubricating oil can enter the bearing chambers of the front bearing and the rear bearing of the differential, and the structural strength of the bearing chambers can be ensured.
The lubricating system comprises an oil pump (not shown in the figure) and a lubricating oil circulating pipeline (arrows in figure 1 indicate the flowing direction of lubricating oil), the lubricating oil circulating pipeline comprises an oil conveying pipe 7 connected with the oil pump, the oil conveying pipe is connected with a main oil duct arranged on the shell, and lubricating oil enters the input shaft bearing and the intermediate shaft bearing through the oil conveying pipe and the main oil duct and is used for actively lubricating the input shaft bearing and the intermediate shaft bearing; the oil delivery pipe is also provided with an oil injection port 8, and the oil injection port faces to the meshing part of the input shaft gear and the middle shaft gear wheel and is used for actively lubricating a first-stage reduction gear of the speed reducer. The lubricating oil circulation pipeline is also provided with a filtering device (not shown in the figure), and a filter element is arranged in the filtering device.
The main oil gallery comprises a front main oil gallery 11 arranged in the front shell and a rear main oil gallery 12 arranged in the rear shell, the front main oil gallery is arranged on the upper portion of the front shell and is connected with the oil conveying pipe, the rear main oil gallery is inverted L-shaped, and the horizontal section of the rear main oil gallery is arranged on the upper portion of the rear shell and is connected with the front main oil gallery. An input shaft oil guide pipe 13 communicated with the rear main oil gallery is arranged in the input shaft, the input shaft bearing comprises an input shaft front bearing 14 and an input shaft rear bearing 15, an input shaft front oil distributing passage 16 is formed between the front end side of the input shaft and the front shell, and the front end of the input shaft oil guide pipe is connected with the input shaft front bearing through the input shaft front oil distributing passage; an input shaft rear oil distributing channel 17 is formed between the rear end side of the input shaft and the rear shell, and the rear main oil channel is connected with an input shaft rear bearing through the input shaft rear oil distributing channel. An intermediate shaft branch oil duct 18 is formed between the rear end side of the intermediate shaft and the rear shell, the intermediate shaft branch oil duct is communicated with the lower end of the vertical section of the rear main oil duct, the intermediate shaft bearing comprises an intermediate shaft front bearing 19 and an intermediate shaft rear bearing 20, and the rear main oil duct is connected with the intermediate shaft rear bearing through the intermediate shaft branch oil duct.
According to the utility model, through the oil pump, the oil delivery pipe and the main oil duct arranged on the shell, lubricating oil is directly delivered into the input shaft bearing and the intermediate shaft bearing, and the input shaft bearing and the intermediate shaft bearing are actively lubricated; meanwhile, active lubrication is provided for the first-stage reduction gear through an oil injection port arranged on the oil conveying pipe; and for the places needing lubrication at the lower part of the speed reducer, such as a differential bearing and the like, the oil stirring at the lower part of the large gear of the differential is utilized to carry out splash lubrication on the places needing lubrication at the lower part of the speed reducer, and meanwhile, the peripheral wall outside the bearing chamber of the differential is provided with an incline, so that the structural integrity of the peripheral wall outside the bearing chamber of the differential can be ensured, the splashed lubricating oil can enter the bearing chamber, and the structural strength of the bearing chamber can be ensured. And the oil mixing position of the large gear of the differential is provided with an oil guide groove of a full-wrapping structure, so that the oil mixing loss of the large gear of the differential can be reduced, and the efficiency of the speed reducer assembly is improved.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention. .
Claims (7)
1. A lubricating system of a speed reducer comprises a shell, and a main speed reducer and a differential mechanism which are arranged in the shell, and is characterized in that the main speed reducer comprises an input shaft (1) and an intermediate shaft (2), the input shaft is provided with an input shaft gear (3), the intermediate shaft is provided with an intermediate shaft large gear (4) and an intermediate shaft small gear (5), the intermediate shaft large gear is meshed with the input shaft gear, the intermediate shaft small gear is meshed with a differential mechanism large gear (6), the lubricating system comprises an oil pump and a lubricating oil circulating pipeline, the lubricating oil circulating pipeline comprises an oil conveying pipe (7) connected with the oil pump, the oil conveying pipe is connected with a main oil duct arranged on the shell, and lubricating oil enters an input shaft bearing and an intermediate shaft bearing through the oil conveying pipe and the main oil duct; the oil conveying pipe is also provided with an oil injection port (8), and the oil injection port faces to the meshing part of the input shaft gear and the intermediate shaft gear wheel.
2. The lubrication system of the speed reducer according to claim 1, wherein the housing comprises a front housing (9) and a rear housing (10), the main oil gallery comprises a front main oil gallery (11) arranged in the front housing and a rear main oil gallery (12) arranged in the rear housing, the front main oil gallery is arranged at the upper part of the front housing and is connected with the oil delivery pipe, the rear main oil gallery is in an inverted L shape, and the horizontal section of the rear main oil gallery is arranged at the upper part of the rear housing and is connected with the front main oil gallery.
3. The lubrication system of the speed reducer according to claim 2, wherein an input shaft oil conduit (13) communicated with the rear main oil gallery is arranged in the input shaft, the input shaft bearing comprises an input shaft front bearing (14) and an input shaft rear bearing (15), an input shaft front oil distributing passage (16) is formed between the front end side of the input shaft and the front shell, and the front end of the input shaft oil conduit is connected with the input shaft front bearing through the input shaft front oil distributing passage; an input shaft rear oil distributing channel (17) is formed between the rear end side of the input shaft and the rear shell, and the rear main oil channel is connected with an input shaft rear bearing through the input shaft rear oil distributing channel.
4. The lubrication system of the speed reducer according to claim 2, wherein an intermediate shaft branch oil gallery (18) is formed between the rear end side of the intermediate shaft and the rear housing, the intermediate shaft branch oil gallery communicating with the lower end of the vertical section of the rear main oil gallery, the intermediate shaft bearing including an intermediate shaft front bearing (19) and an intermediate shaft rear bearing (20), and the rear main oil gallery being connected to the intermediate shaft rear bearing through the intermediate shaft branch oil gallery.
5. Reducer lubrication system according to claim 1, characterised in that the peripheral wall of the bearing housing of the differential is provided with inclined holes (21) which constitute the inlet ducts for the lubricating oil.
6. Reducer lubrication system according to claim 1, characterised in that the oil mixing of the large gear wheel of the differential is provided with oil guiding grooves (22) of full-wrap construction.
7. The retarder lubrication system according to claim 1, wherein said lube oil circulation line is provided with a filter means, said filter means having a filter element disposed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122022884.9U CN215861676U (en) | 2021-08-25 | 2021-08-25 | Speed reducer lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122022884.9U CN215861676U (en) | 2021-08-25 | 2021-08-25 | Speed reducer lubricating system |
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| CN215861676U true CN215861676U (en) | 2022-02-18 |
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| CN202122022884.9U Active CN215861676U (en) | 2021-08-25 | 2021-08-25 | Speed reducer lubricating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055631A1 (en) * | 2022-09-16 | 2024-03-21 | 浙江凌昇动力科技有限公司 | Electric drive transmission system and vehicle |
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2021
- 2021-08-25 CN CN202122022884.9U patent/CN215861676U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055631A1 (en) * | 2022-09-16 | 2024-03-21 | 浙江凌昇动力科技有限公司 | Electric drive transmission system and vehicle |
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