CN101844513A - Duplex bearing power switching device - Google Patents
Duplex bearing power switching device Download PDFInfo
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- CN101844513A CN101844513A CN201010181814A CN201010181814A CN101844513A CN 101844513 A CN101844513 A CN 101844513A CN 201010181814 A CN201010181814 A CN 201010181814A CN 201010181814 A CN201010181814 A CN 201010181814A CN 101844513 A CN101844513 A CN 101844513A
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- bearing
- transition apparatus
- shaft
- switching device
- motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
A duplex bearing power switching device of the invention comprises a switching device housing (1), a switching device bearing seat (2), a first ball bearing (3) with a dustproof cover, a second ball bearing (4) with a dustproof cover, a shaft end fixing device (5) and the like. The duplex bearing power switching device has rational stress and stable work state, can bear an additional load generated by the self weight of a flywheel and effectively transfer the motor torque to a gear box, and is integrated and convenient to assemble and disassemble.
Description
Technical field
The present invention relates to a kind of mechanical power transition apparatus, relate in particular to the coupling of electric drive system and traditional truck chassis transmission system.
Background technology
The current whole world is faced with the energy starved crisis, and atmospheric contamination also is a difficult problem anxious to be solved.This two large problems is directly threatening conventional vehicles---the sustainable development of internal-combustion engines vehicle.And be that the new-energy automobile of representative is the human main path that solves this crisis with the electronlmobil.Under this situation, substantial contribution exploitation electronlmobil has been dropped in the Automobile manufacturing commercial city of countries in the world, and has produced a collection of sample car.
Prior motor power switching mode has: 1, for the vehicle that need not shift gears, motor output end is directly connected on the reducing gear.2, for the dilly of need gearshift, motor output end holds castellated shaft by a single shaft and is connected on the flywheel, and transferring power is to transmission system then.
For light, in, the heavy wrecker truck electric chassis, realize gearshift because need the flywheel of big quality and power-transfer clutch, if only hold fixedly transferring power again behind the flywheel of castellated shaft with a single shaft, the motor output end bearing will bear the additional load that the flywheel deadweight produces, can reduce the life-span of drive motor, therefore need new power switching device of design.
Summary of the invention
For the power with motor steadily is delivered to change speed gear box reliably, need a cover power switching device.This device should be able to transmit Motor torque efficiently, and can support flywheel and clutch assembly, thereby avoids motor to bear additional load.The invention provides power switching device with These characteristics.
Native system is not single to be suitable for electronlmobil, has adopted the vehicle of drive motor all to be suitable for to all power systems.In order to transmit Motor torque efficiently, transition apparatus adopts the transmission shaft in the ball-bearing casing supporting transition apparatus.
Act on for fear of the additional load that produces because of the deadweight of flywheel and power-transfer clutch on the parts such as transmission shaft in the transition apparatus, motor output shaft, motor bearings, the transition apparatus intermediate solid drive shaft adopts the support pattern of duplex bearing.
Shift fork acts on the axial force on the power-transfer clutch when shifting gears in order to bear, and does not make axial force transmission to motor shaft simultaneously, considers the size of shift fork separating force, and selection can be born the ball-bearing casing of certain bi-directional axial load.
For the axial constraint of the separating force, disconnection and the motor shaft that make can the separate support heavier flywheel of transition apparatus, opposing disengaging yoke, pass through on the structure axle head anchor fitting with the transmission shaft in the transition apparatus and two fulcrum ball bearing fixing in the transition apparatus bearing seat.
Can be when power-transfer clutch is worked because of friction produce dust, clutch outer member communicates with atmosphere and also has dust and enter simultaneously, in order to prevent that dust from entering bearing and influencing the life-span, the employing ball bearing with side plate.
According to duplex bearing power switching device of the present invention, comprise: the transition apparatus shell, be the hollow cylindrical structure, captive joint with the shell of motor in its left side, and captive joint with the shell of driving system in the right side; The transition apparatus bearing seat, the middle part that it is positioned at the transition apparatus shell comprises the inner space, accommodates the bearing of transmission shaft, duplex bearing power switching device of driving system and axle head anchor fitting etc. in the inner space of described transition apparatus bearing seat; It is characterized in that, described bearing comprises the clutch shaft bearing and second bearing, both are used for motion simultaneously and connect transmission shaft and transition apparatus bearing seat, the external diameter of the described clutch shaft bearing and second bearing and transition apparatus bearing seat interference fit, maintain static in working order, internal diameter is right after the external diameter of transmission shaft, by being synchronized with the movement of interference fit maintenance and transmission shaft, synchronous supporting by the clutch shaft bearing and second bearing, steady supporting drive shaft, transmit Motor torque efficiently, and can avoid acting on transmission shaft in the transition apparatus because of additional load that the deadweight of flywheel and power-transfer clutch produces, motor output shaft, on the parts such as motor bearings; The inner space of described transition apparatus bearing seat is not the identical cylindrical hollow of diameter, section is provided with the inwardly protruding shaft shoulder therein, outer radius portion with the difference location and installation clutch shaft bearing and second bearing, because stopping of the protruding shaft shoulder, clutch shaft bearing can not move to motor side, and second bearing can not be to the driving system lateral movement; Described axle head anchor fitting is installed in the inner space of transition apparatus bearing seat the side near motor, its can be in the axial direction with transmission shaft and described clutch shaft bearing and second bearing fixing in the transition apparatus bearing seat.
According to duplex bearing power switching device of the present invention on the other hand, described transition apparatus shell is conical, truncated cone-shaped or cylindrical, and size of its right and left and shape can be according to motor size, transmission device change in size.
According to duplex bearing power switching device of the present invention on the other hand, the wherein said clutch shaft bearing and second bearing are the ball-bearing casing that has cover of dust, described clutch shaft bearing with the second bearing size, specification can be different.
According to duplex bearing power switching device of the present invention on the other hand, wherein said axle head anchor fitting is the hollow round table structure, it unifies the external diameter of side greater than close transmission system near the external diameter of motor one side, path one side is used to stop bearing inner ring, by described axle head anchor fitting, described clutch shaft bearing and second bearing and transmission shaft are fixed in the protruding shaft shoulder in the transition apparatus bearing seat, the transmission shaft independent stationary is in bearing seat, can bear certain twin shaft to application force, prevent axial motion, described axle head anchor fitting is by being bolted on the transmission shaft.
According to duplex bearing power switching device of the present invention on the other hand, wherein said axle head anchor fitting can have certain displacement to regulate when assembling vertically, can make the correctly assembling in described transition apparatus bearing seat of the clutch shaft bearing and second bearing, prevent in the fitting process that clutch shaft bearing and second bearing produce extra axial force because of interference assembling and the fastening effect of fastener to bearing, destroy the normality working load direction of the clutch shaft bearing and second bearing.
Duplex bearing power switching device of the present invention is stressed, and rationally mode of operation is steady, can bear the additional load that the flywheel deadweight produces, and can efficiently Motor torque be delivered to change speed gear box.Duplex bearing power switching device has a style of one's own, easy accessibility.As long as the corresponding spline form of change just can be applicable to various dissimilar motors, has very strong compatibility.
Description of drawings
Fig. 1 is the structural representation of duplex bearing power switching device.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
With reference to Fig. 1, be a specific embodiment of duplex bearing power switching device of the present invention.This duplex bearing power switching device comprises transition apparatus shell 1, transition apparatus bearing seat 2, first ball-bearing casing 3 of band cover of dust, second ball-bearing casing 4 of band cover of dust and axle head anchor fitting 5 etc.
The duplex bearing power switching device of present embodiment can be used for various elec. vehicles, is example with electronic light-duty truck chassis here.In working order, transition apparatus shell 1 is captiveed joint with the shell of motor 7 on the left side shown in Figure 1 by existing connection means, on the right with the driving system shell captive joint of (comprising change-speed box etc., not shown).Transition apparatus shell 1 can be taper shape, truncated cone-shaped or cylindrical or other hollow cylindrical, and size of its right and left and shape can be according to motor size, transmission device change in size.
At transition apparatus shell 1 middle part, for comprising the transition apparatus bearing seat 2 of inner space.The inner space of described transition apparatus bearing seat 2 is used to hold transmission shaft 6, first ball-bearing casing 3 and second ball-bearing casing 4 and the axle head anchor fitting 5 etc. of driving system.The inner space of described transition apparatus bearing seat 2 is not the identical cylindrical hollow of diameter, and section is provided with the inwardly protruding shaft shoulder therein, with the outer radius portion of difference location and installation first ball-bearing casing 3 and second ball-bearing casing 4.In the face of direction shown in Figure 1 and since the protruding shaft shoulder stop that first ball-bearing casing 3 can not move to the left, second ball-bearing casing 4 can not move to the right.
First ball-bearing casing 3 and second ball-bearing casing 4 are gauge member, and its external diameter and transition apparatus bearing seat 2 interference fit maintain static in working order; Internal diameter is right after the external diameter of transmission shaft 6, by being synchronized with the movement of interference fit maintenance and transmission shaft.Therefore, utilize two supporting members, first ball-bearing casing 3 and second ball-bearing casing 4, steadily supporting drive shaft 6, transmit Motor torque efficiently, and can avoid acting on the parts such as transmission shaft in the transition apparatus, motor output shaft, motor bearings because of additional load that the deadweight of flywheel and power-transfer clutch produces.
In general, shift fork acts on the axial force on the power-transfer clutch when shifting gears in order to bear, simultaneously do not make axial force transmission to motor shaft, consider the size of shift fork separating force, first ball-bearing casing 3 and second ball-bearing casing 4 are selected to bear the ball-bearing casing of certain bi-directional axial load.In addition, first ball-bearing casing 3 and second ball-bearing casing 4 also can adopt the bearing of other types.In the present embodiment, because can produce dust because of friction during power-transfer clutch work, simultaneously clutch outer member communicates with atmosphere and also has dust and enter, in order to prevent that dust from entering bearing and influencing the life-span, first ball-bearing casing 3 and second ball-bearing casing, 4 employing ball bearing with side plates.In the present embodiment, first ball-bearing casing 3 and second ball-bearing casing, 4 sizes, specification are identical, in some modification, can also select the bearing of different size for use.
The duplex bearing power switching device of present embodiment also comprises axle head anchor fitting 5, and it can make the axial constraint of separating force, disconnection and the motor shaft of can the separate support heavier flywheel of transition apparatus, opposing disengaging yoke.Described axle head anchor fitting 5 is installed in the inner space left end of transition apparatus bearing seat 2, and it can be captive joint form arbitrarily, if can be in the axial direction with transmission shaft and two fulcrum ball bearing fixing in the transition apparatus bearing seat.The axle head anchor fitting 5 of present embodiment is the hollow round table structure, the left side external diameter is greater than the right side external diameter, its right side external diameter is less than or equal to the internal diameter of second ball-bearing casing 4 simultaneously, withstand second ball-bearing casing 4 by its right side, prevent axial motion, this axle head anchor fitting 5 is by being bolted on the transmission shaft 6, simultaneously, the axle head anchor fitting can have certain displacement regulating action vertically when assembling, can make bearing and axle carry correct assembling in the bearing seat, prevent that the fitting process centre bearer from producing extra axial force because of interference assembling and the fastening effect of fastener to bearing, destroys the normality working load direction of ball-bearing casing.
Those skilled in the art can make replacement or modification to structures more of the present invention according to content disclosed by the invention and the art technology of being grasped; but these replacements or modification should not be considered as breaking away from the present invention's design, and these replacements or modification are all in the claimed interest field of the present invention.
Claims (5)
1. the duplex bearing power switching device of an elec. vehicle is used to connect motor and driving system, comprises:
The transition apparatus shell is the hollow cylindrical structure, captives joint with the shell of motor in its left side, captives joint with the shell of driving system in the right side;
The transition apparatus bearing seat, the middle part that it is positioned at the transition apparatus shell comprises the inner space, accommodates the bearing of transmission shaft, duplex bearing power switching device of driving system and axle head anchor fitting etc. in the inner space of described transition apparatus bearing seat;
It is characterized in that, described bearing comprises the clutch shaft bearing and second bearing, both are used for motion simultaneously and connect transmission shaft and transition apparatus bearing seat, the external diameter of the described clutch shaft bearing and second bearing and transition apparatus bearing seat interference fit, maintain static in working order, internal diameter is right after the external diameter of transmission shaft, by being synchronized with the movement of interference fit maintenance and transmission shaft, synchronous supporting by the clutch shaft bearing and second bearing, steady supporting drive shaft, transmit Motor torque efficiently, and can avoid acting on transmission shaft in the transition apparatus because of additional load that the deadweight of flywheel and power-transfer clutch produces, motor output shaft, on the parts such as motor bearings;
The inner space of described transition apparatus bearing seat is not the identical cylindrical hollow of diameter, section is provided with the inwardly protruding shaft shoulder therein, outer radius portion with the difference location and installation clutch shaft bearing and second bearing, because stopping of the protruding shaft shoulder, clutch shaft bearing can not move to motor side, and second bearing can not be to the driving system lateral movement;
Described axle head anchor fitting is installed in the inner space of transition apparatus bearing seat the side near motor, its can be in the axial direction with transmission shaft and described clutch shaft bearing and second bearing fixing in the transition apparatus bearing seat.
2. according to the described duplex bearing power switching device of claim 1, wherein said transition apparatus shell is conical, truncated cone-shaped or cylindrical, and size of its right and left and shape can be according to motor size, transmission device change in size.
3. any described duplex bearing power switching device in requiring according to aforesaid right, the wherein said clutch shaft bearing and second bearing are the ball-bearing casing that has cover of dust, described clutch shaft bearing with the second bearing size, specification can be different.
4. any described duplex bearing power switching device in requiring according to aforesaid right, wherein said axle head anchor fitting is the hollow round table structure, it unifies the external diameter of side greater than close transmission system near the external diameter of motor one side, path one side is used to stop bearing inner ring, by described axle head anchor fitting, described clutch shaft bearing and second bearing and transmission shaft are fixed in the protruding shaft shoulder in the transition apparatus bearing seat, the transmission shaft independent stationary is in bearing seat, can bear certain twin shaft to application force, prevent axial motion, described axle head anchor fitting is by being bolted on the transmission shaft.
5. any described duplex bearing power switching device in requiring according to aforesaid right, wherein said axle head anchor fitting can have certain displacement to regulate when assembling vertically, can make the correctly assembling in described transition apparatus bearing seat of the clutch shaft bearing and second bearing, prevent in the fitting process that clutch shaft bearing and second bearing produce extra axial force because of interference assembling and the fastening effect of fastener to bearing, destroy the normality working load direction of the clutch shaft bearing and second bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010181814A CN101844513A (en) | 2010-05-25 | 2010-05-25 | Duplex bearing power switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010181814A CN101844513A (en) | 2010-05-25 | 2010-05-25 | Duplex bearing power switching device |
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| Publication Number | Publication Date |
|---|---|
| CN101844513A true CN101844513A (en) | 2010-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010181814A Pending CN101844513A (en) | 2010-05-25 | 2010-05-25 | Duplex bearing power switching device |
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| CN (1) | CN101844513A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013757A (en) * | 2010-12-13 | 2011-04-13 | 力帆实业(集团)股份有限公司 | Connecting structure of electric vehicle power assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441570A (en) * | 1980-12-22 | 1984-04-10 | Mannesmann Ag | Connecting a hub to the drive of a traction chain vehicle, or the like |
| CN2850115Y (en) * | 2005-12-05 | 2006-12-20 | 马力 | Direct driven screw pump motor |
| JP2007126065A (en) * | 2005-11-07 | 2007-05-24 | Motor Jidosha Kk | Bearing device for motor rotary shaft in hybrid prime mover |
| CN200941577Y (en) * | 2006-08-09 | 2007-08-29 | 六逸科技股份有限公司 | Radiatable closed motor |
-
2010
- 2010-05-25 CN CN201010181814A patent/CN101844513A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441570A (en) * | 1980-12-22 | 1984-04-10 | Mannesmann Ag | Connecting a hub to the drive of a traction chain vehicle, or the like |
| JP2007126065A (en) * | 2005-11-07 | 2007-05-24 | Motor Jidosha Kk | Bearing device for motor rotary shaft in hybrid prime mover |
| CN2850115Y (en) * | 2005-12-05 | 2006-12-20 | 马力 | Direct driven screw pump motor |
| CN200941577Y (en) * | 2006-08-09 | 2007-08-29 | 六逸科技股份有限公司 | Radiatable closed motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013757A (en) * | 2010-12-13 | 2011-04-13 | 力帆实业(集团)股份有限公司 | Connecting structure of electric vehicle power assembly |
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Application publication date: 20100929 |