CN103899716A - Double-intermediate-shaft bevel-toothed two-speed automatic transmission for new energy vehicles - Google Patents
Double-intermediate-shaft bevel-toothed two-speed automatic transmission for new energy vehicles Download PDFInfo
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- CN103899716A CN103899716A CN201410120641.0A CN201410120641A CN103899716A CN 103899716 A CN103899716 A CN 103899716A CN 201410120641 A CN201410120641 A CN 201410120641A CN 103899716 A CN103899716 A CN 103899716A
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
- F16H3/097—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts the input and output shafts being aligned on the same axis
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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
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0037—Special features of coaxial shafts, e.g. relative support thereof
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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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H57/0412—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
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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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
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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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02091—Measures for reducing weight of gearbox
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2064—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes using at least one positive clutch, e.g. dog clutch
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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 double-intermediate-shaft bevel-toothed two-speed automatic transmission for new energy vehicles. The front end of a spindle is connected with a bearing hole in the rear end of an input shaft through a tapered roller bearing. An input end cover covers the input shaft and is fixed to a case. The middle of the input shaft is supported on the case through an input shaft main bearing. The rear end of the spindle is supported to a case cover and an output end cover respectively through a spindle main bearing and a spindle auxiliary bearing. Two intermediate shaft sub-assemblies are symmetrically disposed on two sides of the spindle. Center lines of the intermediate shaft sub-assemblies and a center line of the spindle are coplanar and inclined to the horizontal plane. A top cover at the top of the case is provided with an oil baffle, a vent plug holder and a vent plug. The oil baffle and the top wall of the case form an incompletely-closed space. The sidewall of the vent plug holder is provided with a plurality of air holes, so that leakage caused by lubricating oil splashing to an opening of the vent plug can be prevented. A shift fork shaft is further disposed between the spindle and the top cover and provided with a rack; the shift fork shaft is connected with a sector; the sector is driven to shift gears.
Description
Technical field
The present invention relates to a kind of electric vehicle drive technology field, relate in particular to a kind of two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile.
Background technique
In existing new-energy automobile drive technology, vehicle still needs to mate suitable gearbox could realize the maximization of power assembly power character and Economy.Because drive motor is compared internal combustion engine type motor and is had more wide in range efficient operation scope (the efficient district in mapping characteristics), the required gear number of its gearbox mating can be still less, and drive motor can be realized reverse travel by reversion, so the gearbox of its coupling can be cancelled reverse gear mechanism, further simplified structure.On the other hand, compare traditional combustion engine formula automobile, new-energy automobile has the special operating mode such as feedback braking, mixed power drive pattern, and the highest input speed of drive motor is high, and new-energy automobile gearbox must be able to meet the requirement of these conditions.In addition,, due to compact structure, the heat radiation of new-energy automobile gearbox and sealing problem also need more concerns.
Existing integral new-energy passenger heavy duty gearbox is the second gear or the three class gear box that are come by minimizing gear number, simplified structure evolution by traditional triple axle gearbox mostly.Consider occupant's travelling comfort, integral new-energy passenger is city bus especially, mostly adopts the setting type of rearmounted rear-guard.This axial dimension to power assembly proposes high requirement, especially for series hybrid electric vehicle type, due to coaxially tandem arrangement of motor, motor, gearbox, requires the axial dimension of gearbox short as far as possible.Three-axle speed variator axial dimension is relatively long, is difficult to meet the demands.Use more low-floor vehicle for city bus, the height dimension that three-axle speed variator is larger, the also more difficult requirement that meets vehicle clearance.If adopt horizontal arrangement three-axle speed variator, although can meet vehicle ground clearance requirement, the relative vehicle power transmission of transmission countershaft axis bias, affects car load durability and travelling comfort.
It is short that the gearbox of two intermediate shaft structures has axial dimension, compact structure, and the advantage such as input torque is large, can overcome the problem that three-axle speed variator runs in applying on integral new-energy passenger.But existing pair of intermediate-shaft speed changing box is multiplex on heavy-duty freight car or off highway vehicle, and gear number is many, and complex structure adopts major-minor case structure more, and physical dimension is large, weight is large.Its design straight-tooth transmission, gearshift sliding sleeves of adopting are shifted gears to improve processability of product structure, are reduced costs more, and consider less to Gear-Box, shifting comfort etc.Existing pair of intermediate-shaft speed changing box patent also has the structural type that adopts helical teeth transmission, synchronizer gearshift, but the suffered axial force of its input shaft and main shaft is transmitted by jump ring, the axial force that can transmit is less, be only applicable to the little helical teeth transmission of helix angle, can not give full play to the advantage of helical teeth transmission.And main shaft axial positioning structure, all more complicated of synchronizer position structure, increased cost and weight, and the difficulty of I& M also strengthens.
Summary of the invention
In view of this, the present invention proposes a kind of two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile, many to solve the gearbox-gear number of two intermediate shaft structures of above-mentioned prior art, complex structure, physical dimension is large, and weight is large, and Gear-Box is large, shifting comfort is poor, the problem of the little grade of axial force of transmission.
For achieving the above object, technological scheme of the present invention is achieved in that
A kind of two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile, comprise axle tooth system, shifting system and housing, described axle tooth system comprises input shaft, actuation gear, main shaft, shifting gear and middle roller assembly, described shifting system comprises double taper synchronizer, gear position sensor, gearshift drive motor and vehicle speed sensor, described housing comprises casing, case lid, input end cap, output end cap and top cover, wherein
Described front-end of spindle is connected with the bearing hole of described input shaft rear end by tapered roller bearing, described input end cap is sheathed on described input shaft outside, and be fixed on described casing, described input shaft stage casing is supported on described casing by input shaft main bearing, described rear-end of spindle is by main shaft main bearing and the auxiliary bearing of main shaft is supported in respectively described case lid and described output terminal covers, in the time that described input shaft and described main shaft are deviated from by axial force mutually, described input shaft can carry out axially locating by described input shaft main bearing, described main shaft can carry out axially locating by described main shaft main bearing, when described input shaft and described main shaft near time, can carry out axially locating to described input shaft and described main shaft by described tapered roller bearing,
Described double taper synchronizer is installed on described main shaft, and described shifting gear is supported in by needle bearing on the stage casing of described main shaft, and the back segment of described main shaft is installed speed of a motor vehicle signal teeth circle, and described output terminal covers vehicle speed sensor is installed;
Two described middle roller assemblies are symmetricly set in the both sides of described main shaft, and in the middle of described in two, the center line of roller assembly and the center line of described main shaft are coplanar and be obliquely installed with horizontal plane, in the middle of described, on roller assembly, the first driving gear and the second driving gear are installed, in the middle of described, roller assembly is supported in respectively on described case lid and described casing by clutch shaft bearing and the second bearing, described the first driving gear is connected with described shifting gear, described the second driving gear is connected with described actuation gear, described the first driving gear, described the second driving gear, described actuation gear and described shifting gear are angular gear, and the gear rotation direction of described actuation gear and described shifting gear is left-handed, when vehicle forward travel, can make axial force reach described housing by input shaft main bearing and main shaft main bearing,
The top cover at described casing top is provided with oil baffle, ventilation obturating plug and breather plug, described oil baffle and described casing top sidewall form the space of incomplete sealing, described ventilation obturating plug sidewall offers some vents, can prevent that lubricating oil splash from causing leakage to breather plug mouth;
Between described main shaft and described top cover, be also provided with declutch shift shaft, described declutch shift shaft is provided with tooth bar, and described declutch shift shaft is connected with a tooth fan, by driving described tooth to fan to realize gearshift;
Described bottom half is provided with some casing heat radiations water route, and described gearshift drive motor is installed on the outside of described casing, and described gearshift drive motor outside is also provided with described gear position sensor.
Above-mentioned two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile, wherein, described ventilation obturating plug is provided with interior threaded hole, described breather plug be provided with described ventilation obturating plug on the outside thread that matches of interior threaded hole.
Above-mentioned two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile, wherein, described top cover is fixed on described casing top by screw.
Above-mentioned two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile, wherein, described actuation gear and described input shaft are structure as a whole.
Above-mentioned two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile, wherein, the quantity in described casing heat radiation water route is four.
The present invention is owing to having adopted above-mentioned technology, and the good effect of generation is:
(1) the present invention adopts the structural measures such as tooth fan tooth bar by the two jack shaft transmissions of employing, oblique layout shifting system, gearshift transmission, effectively reduces the axial and height dimension of gearbox, alleviates structure weight, facilitates arrangement; By adopting Helical gear Transmission, synchronizer gearshift, automatically controlled gearshift, improve car load transmission stability, travelling comfort; Gearbox input shaft actuation gear, main shaft, shifting gear adopt the radially float design not of bearings, improve the reliability of gearbox.
(2) when vehicle forward travel of the present invention, the axial force of gearbox input shaft, main shaft is delivered to end cap by main bearing separately, and main bearing lubrication, cool condition are better, for a long time stable operation at a high speed, severe duty; And in the time of vehicle backing or feedback braking, gearbox input shaft, the suffered axial force of main shaft are offset by the tapered roller bearing transmission of two between centers; The axial positioning structure of input shaft, main shaft is simple, reliable.
(3) heat radiation water route is set on gear box of the present invention, can reaches by introducing the cooling water of power assembly the effect of cooling gearbox; The ventilation device of the anti-leakage proof of splashing of case lid top design, the sealing of assurance gearbox.
(4) adopt two middle shaft helical teeth two-shift automatic variable speed casees of the present invention program trial-production, by stand test and coupling mixed power city low-floor bus, verified that its arrangement convenience, noise are less, operate steadily reliably.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile of the present invention;
Fig. 2 is the side view of a kind of two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
Embodiment
Refer to Fig. 1 and Fig. 2, a kind of two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile of the present invention, comprise axle tooth system, shifting system and housing, axle tooth system comprises input shaft 10, actuation gear 9, main shaft 22, shifting gear 1 and middle roller assembly 5, shifting system comprises double taper synchronizer 14, gear position sensor 24, gearshift drive motor 25 and vehicle speed sensor 26, housing comprises casing 6, case lid 3, input end cap 11, output end cap 21 and top cover 30, it is characterized in that
Double taper synchronizer 14 is installed on main shaft 22, and shifting gear 1 is supported in by needle bearing 17 on the stage casing of main shaft 22, and the back segment of main shaft 22 is installed speed of a motor vehicle signal teeth circle 19, on output end cap 21, vehicle speed sensor 26 is installed;
In the middle of two, roller assembly 5 is symmetricly set in the both sides of main shaft 22, and the center lines of roller assembly 5 and the center line of main shaft 22 are coplanar and be obliquely installed with horizontal plane in the middle of two, on middle roller assembly 5, the first driving gear 4 and the second driving gear 7 are installed, middle roller assembly 5 is supported in respectively on case lid 3 and casing 6 by clutch shaft bearing 2 and the second bearing 8, the first driving gear 4 is connected with shifting gear 1, the second driving gear 7 is connected with actuation gear 9, the first driving gear 4, the second driving gear 7, actuation gear 9 and shifting gear 1 are angular gear, and actuation gear 9 is left-handed with the gear rotation direction of shifting gear 1, when vehicle forward travel, can make axial force reach housing by input shaft main bearing 12 and main shaft main bearing 18,
The top cover 30 at casing 6 tops is provided with oil baffle 27, ventilation obturating plug 28 and breather plug 29, oil baffle 27 and casing 6 top sidewalls form the space of incomplete sealing, ventilation obturating plug 28 sidewalls offer some vents, can prevent that lubricating oil splash from causing leakage to breather plug mouth;
Between main shaft 22 and top cover 30, be also provided with declutch shift shaft 16, declutch shift shaft 16 is provided with tooth bar, declutch shift shaft 16 is connected with a tooth fan 15, fan 15 to realize gearshift by driving gear, gearshift driving mechanism adopts tooth to fan 15 rack-drivings, tooth bar is arranged on declutch shift shaft 16, can further reduces structure height size.Gear position sensor 24 is arranged at gearshift drive motor 25 rear ends, easy access;
Casing 6 bottoms are provided with some casing heat radiations water route 23, and gearshift drive motor 25 is installed on the outside of casing 6, and gearshift drive motor 25 outsides are also provided with gear position sensor 24.
The present invention also has following mode of execution on the basis of the above, please continue referring to shown in Fig. 1 and Fig. 2,
In further embodiment of the present invention, ventilation obturating plug 28 is provided with interior threaded hole, and breather plug 29 is provided with the outside thread matching with the interior threaded hole of ventilating on obturating plug 28.
In further embodiment of the present invention, top cover 30 is fixed on casing 6 tops by screw.
In further embodiment of the present invention, actuation gear 9 is structure as a whole with input shaft 10.
In further embodiment of the present invention, the quantity in casing heat radiation water route 23 is four.
User can further be familiar with characteristic of the present invention and function according to following explanation,
Of the present invention pair of middle shaft helical teeth two-shift automatic variable speed case, comprises input shaft 10, with input shaft 10 Integral design actuation gears 9, main shaft 22, be supported in shifting gear 1 on main shaft 22, be symmetrically arranged in to dispose on the middle roller assembly 5 that two of main shaft 22 both sides are identical, middle roller assembly 5 on the first driving gear 4 and the second driving gear 7, main shaft 22 double taper synchronizer 14 is installed by needle bearing 17.Wherein actuation gear 9, driving gear 4, the second driving gear 7 and shifting gear 1 are all helical gears, and the rotation direction of actuation gear 9 and shifting gear 1 is left-handed, the first driving gear 4 and the second driving gear 7 helix angles meet certain relation, so that the axial force on two driving gears is offset, because input shaft 10 and main shaft 22 all can transmit axial force to bearing by the shaft shoulder or sleeve, the axial force of transmitting can be very large, so it is larger that oblique gear spiral angle can be obtained, the advantage operating steadily to give full play to helical gear.
Output is provided with vehicle speed sensor 26 on end cap 21, by surveying the rotating speed of the vehicle speed signal gear ring 19 of installing main shaft 22 rear ends, for Vehicle Driving Cycle and gearshift provide vehicle speed signal.In the middle of two, roller assembly 5 center lines and main shaft 22 center lines are coplanar, and this face is horizontal by being in tilted layout, so both can reduce gearbox height dimension, can guarantee again that gearbox width dimensions was unlikely excessive, and can increase oblique layout shifting system few in the situation that at height dimension.On motor vehicle driven by mixed power, may occur that gearbox input shaft does not rotate, and main shaft 22 is by the anti-situation of dragging High Rotation Speed of vehicle.So arrange, can realize synchronizer and get rid of oil, gear does not rotate, only relies on synchronizer to rotate and realizes splash lubrication, meets lubricated, the cooling requirement of each bearing on main shaft.Be provided with shifting system in main shaft 22 left side positions, gearshift drive motor 25 is arranged on casing 6 outsides, and gear position sensor 24 is arranged on gearshift drive motor 25 outsides.
On declutch shift shaft 16, be provided with tooth bar, fan 15 by tooth and drive realization gearshift.Bottom half is provided with casing heat radiation water route 23, in the time that input power is large or gearbox radiating condition is poor, can reach by introducing the cooling water of power assembly the effect of cooling gearbox.On gearbox top top cover 30, be provided with oil baffle 27, ventilation obturating plug 28, breather plug 29.The top sidewall of oil baffle 27 and casing 6 forms the space of incomplete sealing, can ventilate in this space, can prevent that lubricating oil splash from causing leakage to breather plug mouth.Ventilation obturating plug 28 sidewalls have several vents, and bottom has a spill port, can prevent from after breather plug mouth condenses, causing seepage after lubricating oil atomization.
When gearbox is during in direct gear, power is exported after input shaft 10, synchronizer 14 reach main shaft 22.When gearbox is during in low-grade location, power is through input shaft 10, be diverted to after the jack shaft of both sides by actuation gear 9, and at shifting gear, 1 place converges, then through synchronizer 14 to output after main shaft 22.
When vehicle forward travel, input shaft 10, the suffered axial force of main shaft 22 are delivered on input end cap 11 and output end cap 21 by input shaft main bearing 12 and output shaft main bearing 18 respectively.In the time of vehicle backing or feedback braking, input shaft 10, the suffered axial force of main shaft 22 are transmitted and are offset by tapered roller bearing 13.On motor vehicle driven by mixed power, when the long-time neutral of needs gearbox is counter while dragging main shaft 22, stir oil by synchronizer 14, realize the lubrication and cooling of tapered roller bearing 13, needle bearing 17, main shaft main bearing 18 and the auxiliary bearing 20 of main shaft.
In the time that vehicle need to be shifted gears, gearshift controller (not shown) is accepted the gear signal of gear position sensor 24, the vehicle speed signal of vehicle speed sensor 26 is in conjunction with the motor speed signal of drive motor controller (not shown), controlling gearshift drive motor 25 drives gearshift to pluck neutral, then regulate the rotating speed of input shaft 10 to target zone by drive motor (not shown), then change to gear after driving gearshift synchronous by double taper synchronizer 14 by gearshift drive motor 25.
In sum, the present invention adopts the structural measures such as tooth fan tooth bar by the two jack shaft transmissions of employing, oblique layout shifting system, gearshift transmission, effectively reduces the axial and height dimension of gearbox, alleviates structure weight, facilitates arrangement; By adopting Helical gear Transmission, synchronizer gearshift, automatically controlled gearshift, improve car load transmission stability, travelling comfort; Gearbox input shaft actuation gear, main shaft, shifting gear adopt the radially float design not of bearings, improve the reliability of gearbox.In the time of vehicle forward travel, the axial force of gearbox input shaft, main shaft is delivered to end cap by main bearing separately, and main bearing lubrication, cool condition are better, for a long time stable operation at a high speed, severe duty; And in the time of vehicle backing or feedback braking, gearbox input shaft, the suffered axial force of main shaft are offset by the tapered roller bearing transmission of two between centers; The axial positioning structure of input shaft, main shaft is simple, reliable.Heat radiation water route is set on gear box, can reaches by introducing the cooling water of power assembly the effect of cooling gearbox; The ventilation device of the anti-leakage proof of splashing of case lid top design, the sealing of assurance gearbox.Adopt two middle shaft helical teeth two-shift automatic variable speed casees of the present invention program trial-production, by stand test and coupling mixed power city low-floor bus, verified that its arrangement convenience, noise are less, operate steadily reliably.
The foregoing is only preferred embodiment of the present invention; not thereby limit embodiments of the present invention and protection domain; to those skilled in the art; the scheme that being equal to of should recognizing that all utilizations specification of the present invention and diagramatic content done replaces and apparent variation obtains, all should be included in protection scope of the present invention.
Claims (5)
1. the two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile, comprise axle tooth system, shifting system and housing, described axle tooth system comprises input shaft 10, actuation gear 9, main shaft 22, shifting gear 1 and middle roller assembly 5, described shifting system comprises double taper synchronizer 14, gear position sensor 24, gearshift drive motor 25 and vehicle speed sensor 26, described housing comprises casing 6, case lid 3, input end cap 11, output end cap 21 and top cover 30, it is characterized in that
Described main shaft 22 front ends are connected with the bearing hole of described input shaft 10 rear ends by tapered roller bearing 13, described input end cap 11 is sheathed on described input shaft 10 outsides, and be fixed on described casing 6, described input shaft 10 stage casings are supported on described casing 6 by input shaft main bearing 12, described main shaft 22 rear ends are supported in respectively on described case lid 3 and described output end cap 21 by main shaft main bearing 18 and the auxiliary bearing 20 of main shaft, in the time that described input shaft 10 and described main shaft 22 are deviated from by axial force mutually, described input shaft 10 can carry out axially locating by described input shaft main bearing 12, described main shaft 22 can carry out axially locating by described main shaft main bearing 18, when described input shaft 10 and described main shaft 22 near time, can carry out axially locating to described input shaft 10 and described main shaft 22 by described tapered roller bearing 13,
Described double taper synchronizer 14 is installed on described main shaft 22, described shifting gear 1 is supported in by needle bearing 17 on the stage casing of described main shaft 22, the back segment of described main shaft 22 is installed speed of a motor vehicle signal teeth circle 19, on described output end cap 21, vehicle speed sensor 26 is installed;
Two described middle roller assemblies 5 are symmetricly set in the both sides of described main shaft 22, and in the middle of described in two, the center line of roller assembly 5 and the center line of described main shaft 22 are coplanar and be obliquely installed with horizontal plane, in the middle of described, on roller assembly 5, the first driving gear 4 and the second driving gear 7 are installed, in the middle of described, roller assembly 5 is supported in respectively on described case lid 3 and described casing 6 by clutch shaft bearing 2 and the second bearing 8, described the first driving gear 4 is connected with described shifting gear 1, described the second driving gear 7 is connected with described actuation gear 9, described the first driving gear 4, described the second driving gear 7, described actuation gear 9 and described shifting gear 1 are angular gear, and described actuation gear 9 is left-handed with the gear rotation direction of described shifting gear 1, when vehicle forward travel, can make axial force reach described housing by input shaft main bearing 12 and main shaft main bearing 18,
The top cover 30 at described casing 6 tops is provided with oil baffle 27, ventilation obturating plug 28 and breather plug 29, described oil baffle 27 and described casing 6 top sidewalls form the space of incomplete sealing, described ventilation obturating plug 28 sidewalls offer some vents, can prevent that lubricating oil splash from causing leakage to breather plug mouth;
Between described main shaft 22 and described top cover 30, be also provided with declutch shift shaft 16, described declutch shift shaft 16 is provided with tooth bar, and described declutch shift shaft 16 is connected with a tooth fan 15, by driving described tooth fan 15 to realize gearshift;
Described casing 6 bottoms are provided with some casing heat radiations water route 23, and described gearshift drive motor 25 is installed on the outside of described casing 6, and described gearshift drive motor 25 outsides are also provided with described gear position sensor 24.
2. the two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile according to claim 1, it is characterized in that, described ventilation obturating plug 28 is provided with interior threaded hole, described breather plug 29 be provided with described ventilation obturating plug 28 on the outside thread that matches of interior threaded hole.
3. the two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile according to claim 1, is characterized in that, described top cover 30 is fixed on described casing 6 tops by screw.
4. the two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile according to claim 1, is characterized in that, described actuation gear 9 is structure as a whole with described input shaft 10.
5. the two middle shaft helical teeth two-shift automatic variable speed casees for new-energy automobile according to claim 1, is characterized in that, the quantity in described casing heat radiation water route 23 is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120641.0A CN103899716A (en) | 2014-03-27 | 2014-03-27 | Double-intermediate-shaft bevel-toothed two-speed automatic transmission for new energy vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120641.0A CN103899716A (en) | 2014-03-27 | 2014-03-27 | Double-intermediate-shaft bevel-toothed two-speed automatic transmission for new energy vehicles |
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| CN104930137A (en) * | 2015-05-29 | 2015-09-23 | 精进电动科技（北京）有限公司 | Automatic speed changer |
| CN105179649A (en) * | 2015-09-23 | 2015-12-23 | 杭州安驱汽车零部件有限公司 | Box of two-gear AMT for electric car |
| CN106763535A (en) * | 2016-12-28 | 2017-05-31 | 綦江齿轮传动有限公司 | A kind of automotive transmission |
| CN107906141A (en) * | 2017-12-12 | 2018-04-13 | 郑州科技学院 | Suitable for the lock ring type synchronized and speed changer of new-energy automobile |
| CN108167433A (en) * | 2017-12-25 | 2018-06-15 | 安徽农业大学 | A kind of tractor folk art term position can switch power output device in real time |
| CN109282019A (en) * | 2018-12-06 | 2019-01-29 | 苏州绿控传动科技股份有限公司 | Triple axle two-shift automatic variable speed device |
| CN109296711A (en) * | 2018-12-06 | 2019-02-01 | 苏州绿控传动科技股份有限公司 | A kind of triple axle two-shift automatic variable speed device |
| CN110360302A (en) * | 2019-06-10 | 2019-10-22 | 浙江吉利控股集团有限公司 | A kind of support construction of transmission shaft |
| CN113007283A (en) * | 2019-12-20 | 2021-06-22 | 现代坦迪斯株式会社 | Planetary gear device |
| CN113599204A (en) * | 2021-09-13 | 2021-11-05 | 林惠珍 | Training equipment for effectively improving naked eye vision and working method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104930137B (en) * | 2015-05-29 | 2018-07-27 | 精进电动科技股份有限公司 | Automatic transmission |
| CN104930137A (en) * | 2015-05-29 | 2015-09-23 | 精进电动科技（北京）有限公司 | Automatic speed changer |
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| CN105179649A (en) * | 2015-09-23 | 2015-12-23 | 杭州安驱汽车零部件有限公司 | Box of two-gear AMT for electric car |
| CN106763535A (en) * | 2016-12-28 | 2017-05-31 | 綦江齿轮传动有限公司 | A kind of automotive transmission |
| CN107906141A (en) * | 2017-12-12 | 2018-04-13 | 郑州科技学院 | Suitable for the lock ring type synchronized and speed changer of new-energy automobile |
| CN108167433A (en) * | 2017-12-25 | 2018-06-15 | 安徽农业大学 | A kind of tractor folk art term position can switch power output device in real time |
| CN109282019A (en) * | 2018-12-06 | 2019-01-29 | 苏州绿控传动科技股份有限公司 | Triple axle two-shift automatic variable speed device |
| CN109296711A (en) * | 2018-12-06 | 2019-02-01 | 苏州绿控传动科技股份有限公司 | A kind of triple axle two-shift automatic variable speed device |
| CN110360302A (en) * | 2019-06-10 | 2019-10-22 | 浙江吉利控股集团有限公司 | A kind of support construction of transmission shaft |
| CN113007283A (en) * | 2019-12-20 | 2021-06-22 | 现代坦迪斯株式会社 | Planetary gear device |
| CN113599204A (en) * | 2021-09-13 | 2021-11-05 | 林惠珍 | Training equipment for effectively improving naked eye vision and working method thereof |
| CN113599204B (en) * | 2021-09-13 | 2023-11-03 | 林惠珍 | Training equipment for naked eyes and working method thereof |
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Application publication date: 20140702 |