CN203570933U - Electric automobile speed reducing device - Google Patents
Electric automobile speed reducing device Download PDFInfo
- Publication number
- CN203570933U CN203570933U CN201320624079.6U CN201320624079U CN203570933U CN 203570933 U CN203570933 U CN 203570933U CN 201320624079 U CN201320624079 U CN 201320624079U CN 203570933 U CN203570933 U CN 203570933U
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- Prior art keywords
- shaft
- output shaft
- input shaft
- gear
- speed reducer
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Abstract
The utility model discloses an electric automobile speed reducing device. The electric automobile speed reducing device comprises a box body, an input shaft, a middle shaft and an output shaft, wherein the input shaft, the middle shaft and the output shaft are arranged in the box body. The input shaft is sleeved with an input shaft gear. The output shaft is sleeved with the output shaft gear. The middle shaft is sleeved with a middle shaft driving gear meshed with the input shaft gear and a middle shaft driven gear meshed with the output shaft gear. All the gears are spur gears. All the shafts are connected with the box body in a rotating mode through cylindrical roller bearings. A bearing supporting base is arranged between the input shaft and the output shaft. The electric automobile speed reducing device is compact in structure, small in occupied space, good in transmission stability and high in transmission accuracy, the temperature of the box body is prevented from being too high, power storage is increased, bearing cavity is greatly improved, and the strength of the input shaft and the strength of the output shaft are enhanced.
Description
Technical field
The utility model relates to gear reduction technical field, more particularly, relates to a kind of secondary gear speed reducer being applied on electric vehicle.
Background technique
Electric vehicle is the current environmental pollution a kind of traffic tool less with respect to orthodox car, it adopts vehicle power as power, to motor, provide electric energy, motor is converted to mechanical energy by the electric energy of power supply, by transmission device or direct drive of wheel, travel, in process of production, can adopt the motor that rotating speed is low, also can adopt high-speed electric expreess locomotive, the motor volume that rotating speed is low is large, Heavy Weight, price is high, very inconvenient while installing like this, take up room large, and be subject to spatial constraints, integral vehicle cost is high simultaneously, Heavy Weight, high-speed electric expreess locomotive rotating speed is high, volume is little, lightweight, price is low, easy for installation, integral vehicle cost is low, lightweight, therefore be subject to most of users' favor, but it also has the shortcoming that moment of torsion is little, and the speed of high-speed electric expreess locomotive is too high, the travelling speed that can not mate vehicle, therefore after speed reducer need to being installed, drive again wheel to travel.
In prior art, the general secondary gear speed reducer that adopts, input shaft generally be arranged in parallel with output shaft or vertical setting, the space taking is like this large, cause the volume of whole speed reducer large, space can not rationally utilize, and this speed reducer all adopts cylindric spiral gear, axial force for the generation of balance helical gear, jack shaft, tapered roller bearing is all installed on input shaft and output shaft, simultaneously, between input shaft and output shaft, adopt deep trench ball bearing or needle bearing, such speed reducer exists spin manifold temperature high, the margin of power is little, the shortcomings such as bearing capacity is low, and the bearing between input shaft and output shaft is without supporting point, transmission stability is poor, transmission process is not steady, input shaft and output shaft easily produce skew, cause transmission accuracy low, easily break down, the intensity of input shaft and output shaft is low, therefore need to do to improve further to its structure.
Model utility content
The purpose of this utility model is the problem of mentioning in above-mentioned background technology in order to solve, a kind of electric vehicle speed reducer is provided, this speed reducer compact structure, take up room little, avoided spin manifold temperature too high, increased the margin of power, bearing capacity improves greatly, strengthened the intensity of input shaft and output shaft, transmission stability is good, and transmission accuracy is high.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of electric vehicle speed reducer, comprise casing and be located at the input shaft in described casing, jack shaft and output shaft, on described input shaft, be arranged with input shaft gear, on described output shaft, be arranged with output shaft gear, on described jack shaft, be arranged with respectively jackshaft drive pinion and jack shaft driven gear, described input shaft gear is meshed with described jackshaft drive pinion, described output shaft gear is meshed with described jack shaft driven gear, described input shaft is all parallel with described jack shaft with described output shaft, described input shaft and described output shaft are on same axis, described input shaft gear, jackshaft drive pinion, jack shaft driven gear and output shaft gear are spur gear wheel, described input shaft, jack shaft and output shaft are all rotationally connected by roller bearing and described casing, between described input shaft and described output shaft, be provided with bearing block.
Further, described jack shaft two ends are arranged with roller bearing, described input shaft one end is arranged with after roller bearing, the other end are rotationally connected by roller bearing and described casing and reaches outside described casing, and one end that described output shaft is relative with described input shaft is arranged with after roller bearing, the other end are rotationally connected by roller bearing and described casing and reaches outside described casing.
Further, the diameter of described input shaft gear is less than the diameter of described jackshaft drive pinion, and the diameter of described output shaft gear is greater than the diameter of described jack shaft driven gear.
Further, described bearing block is set in two roller bearings peripheries of positioned opposite on described input shaft and described output shaft.
Further, described bearing block and described cabinet wall are connected as a single entity.
Further, described speed reducer also comprises respectively high-speed electric expreess locomotive and the rear axle assy being in transmission connection with described input shaft and described output shaft.
Further, the side that described input shaft stretches out described casing is provided with flange, and described flange is fixedly connected with described high-speed electric expreess locomotive shell with described casing by bolt respectively.
Further, described output shaft end is arranged with output flange, and the projection of described output flange and described rear axle assy is connected.
Further, the side that described output shaft stretches out described casing is provided with described output flange is fixed on to the lock nut on described output shaft.
Compared with prior art, the beneficial effects of the utility model are as follows:
1, the speed reducer compact structure that the utility model provides, takes up room little, has avoided spin manifold temperature too high, has increased the margin of power, and bearing capacity improves greatly, has strengthened the intensity of input shaft and output shaft, and transmission stability is good, and transmission accuracy is high.
2, the speed reducer that the utility model provides, input shaft and output shaft on same axis, compact structure, take up room little, adopt high-speed electric expreess locomotive simultaneously, reduced integral vehicle cost, alleviate weight, reduced volume, rationally utilized the space between vehicle crossbeam.
3, the speed reducer that the utility model provides, input shaft gear, jackshaft drive pinion, jack shaft driven gear and output shaft gear all adopt spur gear wheel, eliminated the axial force that bearing is produced, reduced the frictional force in transmission process, thereby reduced temperature rise, and improved the bearing capacity of bearing.
4, the speed reducer that the utility model provides, input shaft, jack shaft and output shaft are all rotationally connected by roller bearing and casing, have improved the bearing capacity of bearing than tapered roller bearing of the prior art, and have reduced temperature rise.
5, the speed reducer that the utility model provides, bearing block is set in two roller bearings peripheries of positioned opposite on input shaft and output shaft, input shaft and output shaft support with roller bearing respectively, by bearing block, support this two roller bearings again, bearing block and cabinet wall are connected as a single entity simultaneously, make it have a supporting point, thereby make whole transmission process more steady, stress equalization, can bear larger rotating speed and moment of torsion, increased the margin of power, strengthened the intensity of input shaft and output shaft, transmission process good stability, transmission accuracy is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment's technological scheme, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is principle schematic of the present utility model;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the A-A generalized section of Fig. 2.
Reference character: 1-casing, 2-high-speed electric expreess locomotive, 3-input shaft, 4-input shaft gear, 5-jackshaft drive pinion, 6-jack shaft, 7-jack shaft driven gear, 8-output shaft gear, 9-output shaft, 10-output flange, 11-roller bearing, 12-rear axle propeller shaft, 13-bearing block, 14-flange, 15-bolt, 16-lock nut.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
With reference to Fig. 1, Fig. 2, Fig. 3 is known, a kind of electric vehicle speed reducer, comprise casing 1 and be located at the input shaft 3 in casing 1, jack shaft 6 and output shaft 9, on input shaft 3, be arranged with input shaft gear 4, on output shaft 9, be arranged with output shaft gear 8, on jack shaft 6, be arranged with respectively jackshaft drive pinion 5 and jack shaft driven gear 7, input shaft gear 4 is meshed with jackshaft drive pinion 5, output shaft gear 8 is meshed with jack shaft driven gear 7, input shaft 3 is all parallel with jack shaft 6 with output shaft 9, input shaft 3 and output shaft 9 are on same axis, input shaft gear 4, jackshaft drive pinion 5, jack shaft driven gear 7 and output shaft gear 8 are spur gear wheel, input shaft 3, jack shaft 6 and output shaft 9 are all rotationally connected by roller bearing 11 and casing 1, between input shaft 3 and output shaft 6, be provided with bearing block 13.
In said structure, casing 1 horizontal arrangement, input shaft 3 and output shaft 9 on same axis, compact structure, take up room little, adopt high-speed electric expreess locomotive 2 simultaneously, reduced integral vehicle cost, alleviate weight, reduced volume, rationally utilized the space between vehicle crossbeam.
In the present embodiment, jack shaft 6 two ends are arranged with roller bearing 11, input shaft 3 one end are arranged with after roller bearing 11, the other end are rotationally connected by roller bearing 11 and casing 1 and reach outside casing 1, and one end that output shaft 9 is relative with input shaft 3 is arranged with after roller bearing 11, the other end are rotationally connected by roller bearing 11 and casing 1 and reaches outside casing 1.
In the present embodiment, the diameter of input shaft gear 4 is less than the diameter of jackshaft drive pinion 5, the diameter of output shaft gear 8 is greater than the diameter of jack shaft driven gear 7, the number of teeth of input shaft gear 4 is less than the number of teeth of jackshaft drive pinion 5, the number of teeth of output shaft gear 8 is more than the number of teeth of jack shaft driven gear 7, preferably, the diameter of input shaft gear 4 is consistent with the diameter of jack shaft driven gear 7, the diameter of output shaft gear 8 is consistent with the diameter of jackshaft drive pinion 5, symmetry properties is good, make transmission process more steady, improved transmission efficiency.
In the present embodiment, input shaft gear 4, jackshaft drive pinion 5, jack shaft driven gear 7 and output shaft gear 8 all adopt spur gear wheel, have eliminated the axial force that bearing is produced, and have reduced the frictional force in transmission process, thereby reduced temperature rise, and improved the bearing capacity of bearing.
In the present embodiment, input shaft 3, jack shaft 6 and output shaft 9 are all rotationally connected by roller bearing 11 and casing 1, improved the bearing capacity of bearing, and reduced temperature rise than tapered roller bearing of the prior art.
In the present embodiment, bearing block 13 is set in two roller bearing 11 peripheries of positioned opposite on input shaft 3 and output shaft 9, input shaft 3 and output shaft 9 are respectively with roller bearing 11 supportings, by bearing block 13, support these two roller bearings 11 again, bearing block 13 is connected as a single entity with casing 1 inwall simultaneously, make it have a supporting point, thereby make whole transmission process more steady, stress equalization, can bear larger rotating speed and moment of torsion, increased the margin of power, strengthened the intensity of input shaft 3 and output shaft 9, transmission process good stability, transmission accuracy is high.
The utility model also comprises respectively high-speed electric expreess locomotive 2 and the rear axle assy being in transmission connection with input shaft 3 and output shaft 9, wherein, the side that input shaft 3 stretches out casing 1 is provided with flange 14, flange 14 is fixedly connected with high-speed electric expreess locomotive 2 shells with casing 1 by bolt 15 respectively, high-speed electric expreess locomotive 2 and casing 1 are coupled together, can be better fixing input shaft 3, high-speed electric expreess locomotive 2 is in transmission connection by motor output shaft and input shaft 3, by transmission of power to input shaft 3, in addition, output shaft 9 ends are arranged with output flange 10, output flange 10 is connected with the projection of rear axle assy, the power of output shaft 9 passes to the bead of rear axle assy by output flange 10, pass to again the rear axle propeller shaft 12 in rear axle assy, simultaneously, the side that output shaft 9 stretches out casing 1 is provided with output flange 10 is fixed on to the lock nut 16 on output shaft 9, simultaneously can be better fixing output shaft 9, like this in transmission process, input shaft 3 and output shaft 9 can not be offset, transmission process is more steady.
In the present embodiment, spur gear wheel has increased modulus and transverse tooth thickness than cylindric spiral gear of the prior art, further improved bearing capacity, and can select flexibly according to actual needs modulus and transverse tooth thickness, the present embodiment has been reserved the position of lubricating oil cooling system simultaneously, to tackle southern summer high temperature weather.
Specific works process is as follows: power passes to input shaft 3 by high-speed electric expreess locomotive 2, input shaft 3 drives by input shaft gear 4 jackshaft drive pinion 5 being meshed with it, jackshaft drive pinion 5 drives jack shaft 6 to rotate, thereby drive the jack shaft driven gear 7 being arranged side by side with jackshaft drive pinion 5 on jack shaft 6 to rotate, jack shaft driven gear 7 so by the output shaft gear 8 that is meshed with it by transmission of power to output shaft 9, output shaft 9 by output flange 10 by transmission of power to rear axle propeller shaft 12, again by transmission of power to wheel, complete the transmission of power to wheel by high-speed electric expreess locomotive 2, realized being in transmission connection of speed reducer and high-speed electric expreess locomotive 2 and rear axle assy, reach needed velocity ratio.
The utility model compact structure, take up room little, avoided casing 1 excess Temperature, increased the margin of power, bearing capacity improves greatly, strengthened the intensity of input shaft 3 and output shaft 9, transmission stability is good, transmission accuracy is high, it is applied to electric vehicle, reduced the volume of electric vehicle, alleviated weight, increased moment of torsion, reduced integral vehicle cost, be conducive to improve the transmission efficiency of power assembly, reduced noise, the travelling speed that high-speed electric expreess locomotive 2 can mate vehicle after speed reducer slows down, rationally utilized the width between vehicle crossbeam, bearing capacity is strong, meet speed ratio, the requirements such as moment of torsion, preferably, when high-speed electric expreess locomotive 2 rotating speeds are 7000 revs/min, reduction speed ratio is 2.78.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. an electric vehicle speed reducer, comprise casing and be located at the input shaft in described casing, jack shaft and output shaft, on described input shaft, be arranged with input shaft gear, on described output shaft, be arranged with output shaft gear, on described jack shaft, be arranged with respectively jackshaft drive pinion and jack shaft driven gear, described input shaft gear is meshed with described jackshaft drive pinion, described output shaft gear is meshed with described jack shaft driven gear, it is characterized in that, described input shaft is all parallel with described jack shaft with described output shaft, described input shaft and described output shaft are on same axis, described input shaft gear, jackshaft drive pinion, jack shaft driven gear and output shaft gear are spur gear wheel, described input shaft, jack shaft and output shaft are all rotationally connected by roller bearing and described casing, between described input shaft and described output shaft, be provided with bearing block.
2. a kind of electric vehicle speed reducer as claimed in claim 1, it is characterized in that, described jack shaft two ends are arranged with roller bearing, described input shaft one end is arranged with after roller bearing, the other end are rotationally connected by roller bearing and described casing and reaches outside described casing, and one end that described output shaft is relative with described input shaft is arranged with after roller bearing, the other end are rotationally connected by roller bearing and described casing and reaches outside described casing.
3. a kind of electric vehicle speed reducer as claimed in claim 2, is characterized in that, the diameter of described input shaft gear is less than the diameter of described jackshaft drive pinion, and the diameter of described output shaft gear is greater than the diameter of described jack shaft driven gear.
4. a kind of electric vehicle speed reducer as claimed in claim 3, is characterized in that, described bearing block is set in two roller bearings peripheries of positioned opposite on described input shaft and described output shaft.
5. a kind of electric vehicle speed reducer as claimed in claim 4, is characterized in that, described bearing block and described cabinet wall are connected as a single entity.
6. a kind of electric vehicle speed reducer as claimed in claim 1, is characterized in that, described speed reducer also comprises respectively high-speed electric expreess locomotive and the rear axle assy being in transmission connection with described input shaft and described output shaft.
7. a kind of electric vehicle speed reducer as claimed in claim 6, is characterized in that, the side that described input shaft stretches out described casing is provided with flange, and described flange is fixedly connected with described high-speed electric expreess locomotive shell with described casing by bolt respectively.
8. a kind of electric vehicle speed reducer as claimed in claim 7, is characterized in that, described output shaft end is arranged with output flange, and the projection of described output flange and described rear axle assy is connected.
9. a kind of electric vehicle speed reducer as claimed in claim 8, is characterized in that, the side that described output shaft stretches out described casing is provided with described output flange is fixed on to the lock nut on described output shaft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320624079.6U CN203570933U (en) | 2013-10-10 | 2013-10-10 | Electric automobile speed reducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201320624079.6U CN203570933U (en) | 2013-10-10 | 2013-10-10 | Electric automobile speed reducing device |
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CN203570933U true CN203570933U (en) | 2014-04-30 |
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CN201320624079.6U Expired - Fee Related CN203570933U (en) | 2013-10-10 | 2013-10-10 | Electric automobile speed reducing device |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104514869A (en) * | 2014-12-25 | 2015-04-15 | 潍坊精科工贸有限公司 | Feed vehicle transmission |
CN105134879A (en) * | 2015-08-12 | 2015-12-09 | 武汉理工大学 | Main speed reducer of FSC (Formula Student China) racing car |
CN105240500A (en) * | 2015-10-21 | 2016-01-13 | 安徽星瑞齿轮传动有限公司 | Automobile speed reducer |
CN105508513A (en) * | 2015-12-16 | 2016-04-20 | 湖南机油泵股份有限公司 | Non-standard reducer for kiln |
CN106949194A (en) * | 2017-04-19 | 2017-07-14 | 江苏金长城减速机有限公司 | A kind of powder grinding machine deceleration device |
-
2013
- 2013-10-10 CN CN201320624079.6U patent/CN203570933U/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104514869A (en) * | 2014-12-25 | 2015-04-15 | 潍坊精科工贸有限公司 | Feed vehicle transmission |
CN104514869B (en) * | 2014-12-25 | 2023-05-26 | 山东精科智能传动设备股份有限公司 | Speed variator for breeding feeding cart |
CN105134879A (en) * | 2015-08-12 | 2015-12-09 | 武汉理工大学 | Main speed reducer of FSC (Formula Student China) racing car |
CN105240500A (en) * | 2015-10-21 | 2016-01-13 | 安徽星瑞齿轮传动有限公司 | Automobile speed reducer |
CN105508513A (en) * | 2015-12-16 | 2016-04-20 | 湖南机油泵股份有限公司 | Non-standard reducer for kiln |
CN106949194A (en) * | 2017-04-19 | 2017-07-14 | 江苏金长城减速机有限公司 | A kind of powder grinding machine deceleration device |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20171010 |
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CF01 | Termination of patent right due to non-payment of annual fee |