CN109538745A - The connection spline lubricating structure of electric commercial vehicle motor and gearbox - Google Patents

The connection spline lubricating structure of electric commercial vehicle motor and gearbox Download PDF

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Publication number
CN109538745A
CN109538745A CN201811601204.5A CN201811601204A CN109538745A CN 109538745 A CN109538745 A CN 109538745A CN 201811601204 A CN201811601204 A CN 201811601204A CN 109538745 A CN109538745 A CN 109538745A
Authority
CN
China
Prior art keywords
oil pump
gearbox
oil
output shaft
motor output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811601204.5A
Other languages
Chinese (zh)
Inventor
李占江
高超
蒋元广
赵志专
陆超
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.)
Nanjing Yuebo Power System Co Ltd
Original Assignee
Nanjing Yuebo Power System Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Yuebo Power System Co Ltd filed Critical Nanjing Yuebo Power System Co Ltd
Priority to CN201811601204.5A priority Critical patent/CN109538745A/en
Publication of CN109538745A publication Critical patent/CN109538745A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/0434Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436Pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/042Guidance of lubricant
    • F16H57/043Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts

Abstract

This application discloses the connection spline lubricating structure of a kind of electric commercial vehicle motor and gearbox, including motor output shaft and transmission input shaft, the motor output shaft protrudes into the transmission input shaft and is cooperated by connection spline and the transmission input shaft;The motor output shaft is equipped with oil pump, and the power source of the oil pump is the motor output shaft;The outlet of the oil pump connects spline described in the oil circuit connection of the motor output shaft by being set to.The present invention uses oil pump forced feed lubrication, increases lubricant passage way, so that lubricating oil inside gearbox is lubricated connection spline, takes away the heat for the middle generation that runs at high speed, can effectively extend the service life of connection spline, reduces maintenance cost.

Description

The connection spline lubricating structure of electric commercial vehicle motor and gearbox
Technical field
The invention belongs to transmission lubrication technical fields, and in particular to a kind of connection flower of electric commercial vehicle motor and gearbox Key lubrication system.
Background technique
Currently, most of new energy electric motor vehicle all uses the gearbox of two gear of motor connection or more gears, with tradition Unlike vehicle, motor with gearbox is directly connected to by spline, eliminates the clutch system in traditional vehicle.Traditional vehicle In, clutch system needs are periodically safeguarded and are replaced, while being also required to that connection spline is cleared up and safeguarded, and new energy Clutch system is eliminated in the automobile of source, eliminates the maintenance to clutch system, and the connection spline of motor and gearbox exists It cannot safeguard under high revolving speed, be run in the state of high temperature, high speed for a long time for a long time, connection spline is caused to be easily damaged.Separately Outside, gradually popularizing with electric car, attention of the noise and lubrication problem of power assembly increasingly by each vehicle producer, Many vehicle producers require that high-revolving motor matches corresponding gearbox, and the application of high-revolving motor can be brought naturally More noises and lubrication problem.
A kind of driving motor such as is provided application No. is the utility model patent of CN201721214334.4 and gearbox joins Lubrication system, including transmission input shaft and drive motor shaft are connect, the transmission input shaft is axially arranged with through-hole, the change Fast case input shaft is socketed in the drive motor shaft by the through-hole, the transmission input shaft and the drive motor shaft Between be provided with lubricating arrangement.In one embodiment, the lubricating arrangement includes sealing device and lubricant medium, the lubrication Medium is packaged in the sealing device.The program between transmission input shaft and drive motor shaft by being arranged lubrication dress It sets, substantially reduces the rubbing action of motor Yu retarder connection place, under the premise of guaranteeing power transmission reliability, make to be driven Spline obtains long-acting lubrication;However the sealing device and lubricant medium in the program need periodic maintenance, and the program is not yet The lubrication needs being able to satisfy under high-speed state.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide the companies of a kind of electric commercial vehicle motor and gearbox Spline lubricating structure is connect, by adding oil circuit on motor output shaft, enhances the whole lubricant effect of gearbox.
The technical solution that the present invention solves the problems, such as is: a kind of connection spline lubrication knot of electric commercial vehicle motor and gearbox Structure, including motor output shaft and transmission input shaft, which is characterized in that the motor output shaft protrudes into the transmission input shaft It is interior and by connection spline and the transmission input shaft cooperate;The motor output shaft is equipped with oil pump, and the oil pump moves Power source is the motor output shaft;It is spent by being set to connect described in the oil circuit connection of the motor output shaft outlet of the oil pump Key.
Preferably, the oil circuit includes along the axial motor output shaft oil duct for being set to the motor output shaft, the motor It exports slinger and connects the connection spline.
Preferably, the transmission input shaft is connected with transmission main shaft, and the oil circuit includes being set to the electricity along axial Output slinger in machine output shaft, the output slinger have the oilhole for leading to the connection spline, the output shafting oil Road is connected at the transmission main shaft oil duct in the transmission main shaft by oil pipe.
Preferably, the transmission main shaft is mounted on inside the transmission input shaft by first bearing, the oil pipe On be provided with hole, lubricating oil can through hole lubricate the first bearing.
Preferably, the first bearing is RN cone bearing.
Preferably, the oil pump is located on motor output shaft by oil pump end cap, and the oil pump end cap is equipped with oil sealing;Institute Oil pump is stated to be connected by straight pin with motor output shaft.
Preferably, the oil pump is equipped with oil pump fixing bolt, and the oil pump fixing bolt is used for the stator and oil of oil pump The shell of pump links together;The oil pump end cap is equipped with groove, and end and the groove of the oil pump fixing bolt are matched It closes, to prevent the stator rotation of oil pump.
Preferably, the transmission input shaft is mounted in gearbox by second bearing, and the oil circuit can lubricate institute State second bearing.
Preferably, the bearing is conical bearing, and adjustment axial gap is equipped between the conical bearing and gearbox Adjust gasket.
Preferably, the oil pump is involute gear pump.
Compared with the existing technology, the beneficial effects of the present invention are: 1, so that motor output shaft is protruded into the transmission input shaft Inside keeps overall structure more compact, and easy to maintenance, maintenance cost is lower.2, equipped with the corresponding oil circuit for lubrication, so that The connection spline of motor and gearbox is adequately lubricated, influence of the bring high temperature that avoids running at high speed to connection spline and It destroys.3, using motor output shaft as the power source of oil pump, the revolving speed of oil pump is identical with motor output shaft, the flow of oil pump with The raising of revolving speed and increase, preferably meet the lubricating requirement of the gearbox under running at high speed.
Detailed description of the invention
Fig. 1 is the structural representation of one embodiment of the connection spline lubricating structure of electric commercial vehicle motor and gearbox Figure.
Description of symbols: 1- motor output shaft;2- oil pump end cap;3- oil sealing;4- oil pump fixing bolt;5- oil pump;6- Adjust gasket;7- second bearing;8- transmission input shaft;9- oil pipe;10- transmission main shaft;11- first bearing;12- oil circuit; 13- oilhole;The hole 14-;15- connection spline;16- motor output shaft oil duct;17- transmission main shaft oil duct;18- straight pin.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is further illustrated.
As shown in Figure 1, the connection spline lubricating structure of a kind of electric commercial vehicle motor and gearbox, including motor output shaft 1 and transmission input shaft 8;Motor output shaft 1 protrudes into 8 inside of transmission input shaft and is inputted by connection spline 15 and gearbox Axis 8 cooperates, and keeps overall structure more compact;Motor output shaft 1 is equipped with oil pump 5, and the outlet of oil pump 5 is exported by being set to motor The oil circuit 12 of axis 1 is connected with spline 15 is connect;Oil circuit 12 includes along the axial motor output shaft oil being set in motor output shaft 1 Road 16, motor output shaft oil duct 16 are connected with spline 15 is connect.
Transmission input shaft 8 is connected with transmission main shaft 10, and motor output shaft oil duct 16 is connected to by oil pipe 9 and is set to Transmission main shaft oil duct 17 in transmission main shaft 10.Transmission main shaft 10 is mounted on transmission input shaft by first bearing 11 8 inside;First bearing 11 is RN cone bearing, can be played a supporting role, and the deflection of transmission main shaft 10 is reduced.Oil pipe 9 connects Motor output shaft oil duct 16 and transmission main shaft oil duct 17 are connect, lubricating oil can be made to smoothly enter transmission main shaft 10, is lubricated The gear and bearing (not shown) of rear end;Hole 14 is provided on oil pipe 9, the lubricating oil leaked out from hole 14 can lubricate first axle Hold 11;The installation of oil pipe 9 is so that the lubricant effect of the lubricating oil in entire gearbox is more preferable, and assignment of traffic is more evenly.
Oil pump 5 is power source with motor output shaft 1, and the revolving speed and motor output shaft 1 of oil pump 5 are identical, the flow of oil pump 5 with The raising of revolving speed and increase, preferably meet the lubricating requirement of the gearbox under running at high speed.Oil pump 5 passes through oil pump end cap 2 are located on motor output shaft 1, and oil sealing 3 is equipped at oil pump end cap 2;Oil pump fixing bolt 4 is by the stator of oil pump, the shell of oil pump Body assembling parts are together;Oil pump end cap 2 is equipped with groove, and there are holes for the groove of the end of oil pump fixing bolt 4 and oil pump end cap 2 Axis cooperation, it is radially fixed so as to the stator progress to oil pump, prevent the stator rotation of oil pump 5;Oil pump 5 passes through straight pin 18 It is connected with motor output shaft 1;Radial positioning of the straight pin 18 for the rotor of oil pump 5, can prevent the rotor rotation of oil pump 5; As motor output shaft 1 rotates, oil pump 5 sucks the lubricating oil in transmission housing body.
Transmission input shaft 8 is mounted in gearbox by second bearing 7, and oil circuit 12 is equipped with the oilhole towards bearing 7 13, so that lubricating oil is lubricated bearing;The adjustment gasket 6 of adjustment axial gap is equipped between second bearing 7 and gearbox.
Further, second bearing 7 is conical bearing.
Further, oil pump 5 is involute gear pump.
Present invention is not limited to the embodiments described above, without departing substantially from substantive content of the present invention, art technology Any deformation, improvement, the replacement that personnel are contemplated that each fall within protection scope of the present invention.

Claims (10)

1. the connection spline lubricating structure of a kind of electric commercial vehicle motor and gearbox, including motor output shaft and gearbox input Axis, it is characterised in that: the motor output shaft protrudes into the transmission input shaft and by connection spline and the gearbox Input shaft cooperation;The motor output shaft is equipped with oil pump, and the power source of the oil pump is the motor output shaft;The oil pump Outlet by be set to the motor output shaft oil circuit connection described in connect spline.
2. the connection spline lubricating structure of electric commercial vehicle motor according to claim 1 and gearbox, it is characterised in that: The oil circuit includes along the axial motor output shaft oil duct for being set to the motor output shaft, and the motor output shaft oil duct connects institute State connection spline.
3. the connection spline lubricating structure of electric commercial vehicle motor according to claim 1 and gearbox, it is characterised in that: The transmission input shaft is connected with transmission main shaft, and the oil circuit includes along the axial output being set in the motor output shaft Slinger, the output slinger have the oilhole for leading to the connection spline, and the output slinger is set by oil pipe connection In the transmission main shaft oil duct in the transmission main shaft.
4. the connection spline lubricating structure of electric commercial vehicle motor according to claim 3 and gearbox, it is characterised in that: The transmission main shaft is mounted on inside the transmission input shaft by first bearing, and hole, lubricating oil are provided on the oil pipe It being capable of the through hole lubrication first bearing.
5. the connection spline lubricating structure of electric commercial vehicle motor according to claim 4 and gearbox, it is characterised in that: The first bearing is RN cone bearing.
6. the connection spline lubricating structure of electric commercial vehicle motor according to claim 1 and gearbox, it is characterised in that: The oil pump is located on motor output shaft by oil pump end cap, and the oil pump end cap is equipped with oil sealing;The oil pump passes through cylinder Pin is connected with motor output shaft.
7. the connection spline lubricating structure of electric commercial vehicle motor according to claim 6 and gearbox, it is characterised in that: The oil pump is equipped with oil pump fixing bolt, and the oil pump fixing bolt is used to the shell of the stator of oil pump and oil pump being connected to one It rises;The oil pump end cap is equipped with groove, and the end of the oil pump fixing bolt and the groove cooperate, to prevent oil pump Stator rotation.
8. the connection spline lubricating structure of electric commercial vehicle motor according to claim 1 and gearbox, it is characterised in that: The transmission input shaft is mounted in gearbox by second bearing, and the oil circuit can lubricate the second bearing.
9. the connection spline lubricating structure of electric commercial vehicle motor according to claim 8 and gearbox, it is characterised in that: The bearing is conical bearing, and the adjustment gasket of adjustment axial gap is equipped between the conical bearing and gearbox.
10. the connection spline lubricating structure of electric commercial vehicle motor according to claim 1 and gearbox, feature exist In: the oil pump is involute gear pump.
CN201811601204.5A 2018-12-26 2018-12-26 The connection spline lubricating structure of electric commercial vehicle motor and gearbox Pending CN109538745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811601204.5A CN109538745A (en) 2018-12-26 2018-12-26 The connection spline lubricating structure of electric commercial vehicle motor and gearbox

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811601204.5A CN109538745A (en) 2018-12-26 2018-12-26 The connection spline lubricating structure of electric commercial vehicle motor and gearbox

Publications (1)

Publication Number Publication Date
CN109538745A true CN109538745A (en) 2019-03-29

Family

ID=65858223

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811601204.5A Pending CN109538745A (en) 2018-12-26 2018-12-26 The connection spline lubricating structure of electric commercial vehicle motor and gearbox

Country Status (1)

Country Link
CN (1) CN109538745A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113530991A (en) * 2021-06-30 2021-10-22 东风汽车零部件(集团)有限公司刃量具分公司 Structure for shortening butt joint axial size of transfer case

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113530991A (en) * 2021-06-30 2021-10-22 东风汽车零部件(集团)有限公司刃量具分公司 Structure for shortening butt joint axial size of transfer case

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