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CN115182988A - A kind of hybrid transmission bearing lubrication structure - Google Patents

A kind of hybrid transmission bearing lubrication structure Download PDF

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Publication number
CN115182988A
CN115182988A CN202210786889.5A CN202210786889A CN115182988A CN 115182988 A CN115182988 A CN 115182988A CN 202210786889 A CN202210786889 A CN 202210786889A CN 115182988 A CN115182988 A CN 115182988A
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China
Prior art keywords
bearing
motor rotor
rotor shaft
gear shaft
shaft
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Pending
Application number
CN202210786889.5A
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Chinese (zh)
Inventor
秦运德
黄勇
沈小波
刘星
蓝余永
许英豪
李梦喆
孙洁
卓惟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liuzhou Saike Technology Development Co Ltd
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Liuzhou Saike Technology Development Co Ltd
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Priority to CN202210786889.5A priority Critical patent/CN115182988A/en
Publication of CN115182988A publication Critical patent/CN115182988A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0417—Heat exchangers adapted or integrated in the gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0426—Means for guiding lubricant into an axial channel of a shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions

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

Abstract

The invention discloses a mixed-action transmission bearing lubricating structure, which is arranged between a front shell and a rear shell and comprises: the motor comprises a first bearing, a gear shaft, a motor rotor shaft and a second bearing; the outer ring of the first bearing is in clearance fit with the front shell, and the inner ring of the first bearing is in interference fit with the first end of the gear shaft; the second end of the gear shaft is in interference fit with the first end of the motor rotor shaft; the second end of the motor rotor shaft is in interference fit with the inner ring of the second bearing; the outer ring of the second bearing is in clearance fit with the rear shell; the gear shaft and the motor rotor shaft are both hollow, and the motor rotor shaft, the gear shaft and the roller of the first bearing are communicated in sequence from the oil delivery duct of the rear shell and the roller of the second bearing. The invention can realize the technical effect that the motor bearing and the motor rotor share one cooling oil duct.

Description

一种混动变速器轴承润滑结构A kind of hybrid transmission bearing lubrication structure

技术领域technical field

本发明涉及轴承润滑技术领域，更具体地说是涉及一种混动变速器轴承润滑结构。The invention relates to the technical field of bearing lubrication, and more particularly to a bearing lubrication structure of a hybrid transmission.

背景技术Background technique

变速器是机械传动系中最主要的部件之一，它的输入轴通过离合器与发动机连接，从发动机获得动力，再通过挂挡机构和齿轮传动系统改变其输出轴和输入轴的传动比，由输出轴带动差速器运动。为了减轻变速器内的运动零件接触表面的磨损，带走摩擦面上的杂质和热量，从而保证变速器的正常工作，提高变速器的使用寿命，在变速器壳体内放润滑油，而在输入轴或输出轴上套装有油封，可以避免润滑油从转轴和变速器壳体的之间的缝隙向外泄漏，并且可防止外界灰尘进入变速器壳体内。The transmission is one of the most important components in the mechanical drive train. Its input shaft is connected to the engine through a clutch, obtains power from the engine, and then changes the transmission ratio between the output shaft and the input shaft through the shifting mechanism and the gear transmission system. The axle drives the differential movement. In order to reduce the wear of the contact surfaces of the moving parts in the transmission, take away the impurities and heat on the friction surface, so as to ensure the normal operation of the transmission and improve the service life of the transmission, the lubricating oil is put in the transmission housing, and the input shaft or output shaft The upper sleeve is provided with an oil seal, which can prevent the lubricating oil from leaking out from the gap between the rotating shaft and the transmission casing, and can prevent external dust from entering the transmission casing.

但是在现有技术中，混合动力变速器的两电机轴承处于总成的最上方，电机转子轴为实心结构，车辆车速低时，齿轮不能把冷却油带到轴承位置，需要设计专用油道对轴承润滑。油道长度较长，不能铸造成型，需要专用刀具机加工，加工节拍长，且机加工成型的油道无表面压铸致密层，其容易造成油液泄漏。However, in the prior art, the bearings of the two motors of the hybrid transmission are located at the top of the assembly, and the rotor shaft of the motor is a solid structure. When the vehicle speed is low, the gear cannot bring the cooling oil to the bearing position, so it is necessary to design a special oil passage for the bearing. lubricating. The length of the oil channel is too long, so it cannot be cast and formed. It needs special tool machining, and the processing cycle is long. Moreover, the machined oil channel has no surface die-casting dense layer, which is easy to cause oil leakage.

因此，如何提供混动变速器电机轴承润滑油，取消壳体专用油道的混动变速器电机轴承润滑结构，是本领域亟需解决的技术问题之一。Therefore, how to provide lubricating oil for the motor bearing of the hybrid transmission and remove the lubricating structure of the motor bearing of the hybrid transmission with the dedicated oil passage for the housing is one of the technical problems that need to be solved urgently in the art.

发明内容SUMMARY OF THE INVENTION

有鉴于此，本发明提供了一种混动变速器轴承润滑结构。目的就是为了解决上述之不足而提供。In view of this, the present invention provides a bearing lubrication structure of a hybrid transmission. The purpose is to provide to solve the above shortcomings.

为解决上述技术问题，本发明采取了如下技术方案：In order to solve the above-mentioned technical problems, the present invention has adopted the following technical solutions:

一种混动变速器轴承润滑结构，该结构设置于前壳体与后壳体之间，该结构包括：第一轴承、齿轮轴、电机转子轴以及第二轴承；所述第一轴承的外圈与前壳体间隙配合，所述第一轴承的内圈与所述齿轮轴的第一端过盈配合；所述齿轮轴的第二端与所述电机转子轴的第一端抵触配合；所述电机转子轴的第二端与所述第二轴承的内圈过盈配合；所述第二轴承的外圈与所述后壳体间隙配合；所述齿轮轴和所述电机转子轴内部均空心，且从所述后壳体的输油油道、所述第二轴承的滚子，所述电机转子轴、所述齿轮轴以及所述第一轴承的滚子依次连通。A bearing lubrication structure of a hybrid transmission, the structure is arranged between a front casing and a rear casing, the structure comprises: a first bearing, a gear shaft, a motor rotor shaft and a second bearing; an outer ring of the first bearing Clearly fit with the front housing, the inner ring of the first bearing is in interference fit with the first end of the gear shaft; the second end of the gear shaft is in interference fit with the first end of the motor rotor shaft; The second end of the rotor shaft of the motor is in interference fit with the inner ring of the second bearing; the outer ring of the second bearing is in clearance fit with the rear housing; the gear shaft and the motor rotor shaft are internally It is hollow and communicates sequentially from the oil passage of the rear casing, the roller of the second bearing, the motor rotor shaft, the gear shaft and the roller of the first bearing.

优选地，所述后壳体的输油油道进油口连通所述后壳体的润滑油道，所述后壳体的输油油道出油口与所述第二轴承的滚子连通。Preferably, the oil inlet of the oil passage of the rear casing communicates with the lubricating oil passage of the rear casing, and the oil outlet of the oil passage of the rear casing communicates with the rollers of the second bearing .

优选地，所述后壳体的输油油道与所述电机转子轴连通。Preferably, the oil passage of the rear casing communicates with the rotor shaft of the motor.

优选地，所述电机转子轴与所述齿轮轴连通。Preferably, the motor rotor shaft communicates with the gear shaft.

优选地，所述齿轮轴与所述第一轴承的滚子连通。Preferably, the gear shaft communicates with the rollers of the first bearing.

优选地，所述齿轮轴通过花键与所述电机转子轴传动连接。Preferably, the gear shaft is drivingly connected with the motor rotor shaft through splines.

本发明相对于现有技术取得了以下技术效果：The present invention has achieved the following technical effects with respect to the prior art:

通过所述齿轮轴和所述电机转子轴内部均设置为空心，且从所述后壳体的输油油道、所述第二轴承的滚子、所述电机转子轴、所述齿轮轴以及所述第一轴承的滚子依次连通，可实现电机轴承与电机转子共用一条冷却油道，取消壳体专用油道。The gear shaft and the motor rotor shaft are both hollow inside, and the oil passages of the rear housing, the rollers of the second bearing, the motor rotor shaft, the gear shaft and The rollers of the first bearing are connected in sequence, so that the motor bearing and the motor rotor can share a cooling oil passage, and the special oil passage for the casing is eliminated.

附图说明Description of drawings

图1为本发明一种混动变速器轴承润滑结构的结构示意图；1 is a schematic structural diagram of a bearing lubrication structure of a hybrid transmission according to the present invention;

图中：1-前壳体；2-后壳体；3-第一轴承；4-齿轮轴；5-电机转子轴；6-第二轴承；7-花键。In the figure: 1-front housing; 2-rear housing; 3-first bearing; 4-gear shaft; 5-motor rotor shaft; 6-second bearing; 7-spline.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

实施例Example

参照图1所示一种混动变速器轴承润滑结构，该结构设置于前壳体1与后壳体2之间，该结构包括：第一轴承3、齿轮轴4、电机转子轴5以及第二轴承6。其中，第一轴承3的外圈与前壳体1间隙配合，第一轴承3的内圈与齿轮轴4的第一端过盈配合，齿轮轴4的第二端与电机转子轴5的第一端抵触配合，电机转子轴5的第二端与第二轴承6的内圈过盈配合，第二轴承6的外圈与后壳体2间隙配合。Referring to a bearing lubrication structure of a hybrid transmission shown in FIG. 1 , the structure is arranged between the front housing 1 and the rear housing 2 , and the structure includes: a first bearing 3 , a gear shaft 4 , a motor rotor shaft 5 and a second Bearing 6. The outer ring of the first bearing 3 is in clearance fit with the front housing 1 , the inner ring of the first bearing 3 is in interference fit with the first end of the gear shaft 4 , and the second end of the gear shaft 4 is in interference fit with the first end of the motor rotor shaft 5 . One end is in interference fit, the second end of the motor rotor shaft 5 is in interference fit with the inner ring of the second bearing 6 , and the outer ring of the second bearing 6 is in clearance fit with the rear housing 2 .

本实施例中，齿轮轴4和电机转子轴5内部均空心，且从后壳体2的输油油道、第二轴承6的滚子、电机转子轴5、齿轮轴4以及第一轴承3的滚子依次连通，且后壳体2输油油道进油口连通后壳体2润滑油道，后壳体2输油油道出油口与第二轴承6的滚子连通。后壳体2输油油道进油口注入油后，油从后壳体2的出油口依次流入第二轴承6的滚子、电机转子轴5、齿轮轴4以及第一轴承3的滚子，最终实现第一轴承3和电机转子轴5的润滑。In this embodiment, both the gear shaft 4 and the motor rotor shaft 5 are hollow inside, and are connected from the oil passage of the rear housing 2 , the rollers of the second bearing 6 , the motor rotor shaft 5 , the gear shaft 4 and the first bearing 3 The rollers of the rear casing 2 are connected in sequence, and the oil inlet of the oil passage of the rear casing 2 is connected to the lubricating oil passage of the rear casing 2 , and the oil outlet of the oil passage of the rear casing 2 is communicated with the rollers of the second bearing 6 . After the oil is injected into the oil inlet of the oil passage of the rear casing 2, the oil flows into the rollers of the second bearing 6, the motor rotor shaft 5, the gear shaft 4 and the rollers of the first bearing 3 in sequence from the oil outlet of the rear casing 2. Finally, the lubrication of the first bearing 3 and the rotor shaft 5 of the motor is realized.

本实施例中，后壳体2的输油油道出油口与第二轴承6的滚子连通。In this embodiment, the oil outlet of the oil passage of the rear housing 2 is communicated with the rollers of the second bearing 6 .

本实施例中，后壳体2的输油油道与电机转子轴5连通。In this embodiment, the oil passage of the rear casing 2 is communicated with the rotor shaft 5 of the motor.

本实施例中，电机转子轴5与齿轮轴4连通。In this embodiment, the motor rotor shaft 5 communicates with the gear shaft 4 .

本实施例中，齿轮轴4与第一轴承3的滚子连通。In this embodiment, the gear shaft 4 communicates with the rollers of the first bearing 3 .

本实施例中，齿轮轴4通过花键7与电机转子轴5传动连接。In this embodiment, the gear shaft 4 is drive-connected with the motor rotor shaft 5 through the splines 7 .

以上所述，仅是本发明较佳实施例而已，并非对本发明的技术范围作任何限制，故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、等同变化与修饰，均仍属于本发明技术方案的范围内。The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the scope of the present invention. within the scope of the technical solution of the present invention.

Claims (6)

1. A hybrid transmission bearing lubrication structure provided between a front case (1) and a rear case (2), characterized by comprising: the motor comprises a first bearing (3), a gear shaft (4), a motor rotor shaft (5) and a second bearing (6);
the outer ring of the first bearing (3) is in clearance fit with the front shell (1), and the inner ring of the first bearing (3) is in interference fit with the first end of the gear shaft (4);
the second end of the gear shaft (4) is in interference fit with the first end of the motor rotor shaft (5);
the second end of the motor rotor shaft (5) is in interference fit with the inner ring of the second bearing (6);
the outer ring of the second bearing (6) is in clearance fit with the rear shell (2);
the gear shaft (4) and the motor rotor shaft (5) are both hollow, and the oil conveying channel of the rear shell (2), the roller of the second bearing (6), the motor rotor shaft (5), the gear shaft (4) and the roller of the first bearing (3) are communicated in sequence.
2. The hybrid transmission bearing lubrication structure according to claim 1, wherein an oil gallery inlet of the rear housing (2) communicates with an oil gallery of the rear housing (2), and an oil gallery outlet of the rear housing (2) communicates with a roller of the second bearing (6).
3. A hybrid transmission bearing lubrication structure according to claim 2, wherein the oil delivery passage of the rear housing (2) communicates with the motor rotor shaft (5).
4. A hybrid transmission bearing lubrication structure according to claim 3, wherein said motor rotor shaft (5) communicates with said gear shaft (4).
5. Hybrid transmission bearing lubrication arrangement according to claim 4, characterized in that the gear shaft (4) communicates with the rollers of the first bearing (3).
6. Hybrid transmission bearing lubrication arrangement according to claim 5, characterised in that the gear shaft (4) is in driving connection with the motor rotor shaft (5) by means of splines (7).
CN202210786889.5A 2022-07-04 2022-07-04 A kind of hybrid transmission bearing lubrication structure Pending CN115182988A (en)

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