CN106515435A - Drive system for undergraduate offroad racing - Google Patents
Drive system for undergraduate offroad racing Download PDFInfo
- Publication number
- CN106515435A CN106515435A CN201610999306.1A CN201610999306A CN106515435A CN 106515435 A CN106515435 A CN 106515435A CN 201610999306 A CN201610999306 A CN 201610999306A CN 106515435 A CN106515435 A CN 106515435A
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- Prior art keywords
- jackshaft
- output shaft
- power
- power output
- shaft
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to a drive system of an undergraduate offroad racing. The drive system comprises a CVT (continuously variable transmission), a double reduction box, an inner constant velocity joint and a drive half shaft, wherein an upper belt pulley on the CVT is in matched connection with an output shaft of an engine through a flat key shaft hole; the upper belt pulley is connected with a lower belt pulley through a drive belt, and transmits the power to the lower belt pulley through the drive belt; the lower belt pulley is connected with a power input shaft in the double reduction box; a power output shaft in the double reduction box is connected with the inner constant velocity joint; and the inner constant velocity joint is connected with the drive half shaft. The drive system disclosed by the invention is compact in structure, lightweighting, matched with the output of the engine, linear in torque output, and good in breakout capacity and offroad performance on adverse road conditions.
Description
Technical field
The present invention relates to vehicle transmission field of mechanisms, and in particular to a kind of university students' offroad racing drive system.
Background technology
Chinese automobile Engineering society bar breathes out contest Baja SAE China（Abbreviation BSC contests）It is by Chinese automobile engineering
Meeting（SAE China, vapour association in abbreviation）Sponsor, the miniature cross-country racecar design carried out between each universities and colleges and make contest.This
Item race originates from the U.S., and contest includes various static and dynamic items tests, and static state items include that check-up, racing car set
Meter, cost and manufacture, trade marketing etc., dynamic item includes pull strength, around stake, linear accelerating, handling, endurance competition etc..
2015 Nian8Yue26 Chinese automobiles Engineering societys have successfully held first bar in Weifang City of Shandong Province and have breathed out contest,
Become the 6th country for holding the match of bar Kazakhstan in the world.
Racing car can be in rugged safe on-road travel, including rock, sand dune, log, abrupt slope, miriness and shallow water
Various sections；Rainfall, all kinds of weather conditions such as snow, freeze, and racing track can arbitrarily or global combinatorial.Wherein, dynamic race
700 points of total score, accounts for most of proportion of total score, will in order to meet the aspects such as dynamic match linear accelerating, climbing traction, durability
Ask, it is ensured that the dynamic property of offroad racing, fuel economy, manipulate stability, a set of suitable drive mechanism is requisite.
As the electromotor of racing car is unified offer, therefore, the dynamic property quality of different racing cars is just embodied in power train
System is matched with electromotor, and the structural advantages of drive system itself.
Existing offroad vehicle drive system structure is complicated, is tied using speed-changing gear box, power transmission shaft, differential lock and drive axle more
Structure, quality weight, volume are big, it is impossible to be applied in such miniature cross-country racing car.Simultaneously as gear manual transmission speed change mistake
Journey is loaded down with trivial details, is also easy to produce shock between speed-change process middle gear, and noise is big, and fuel economy is poor, and it is durable during the games,
Easily make driver produce fatigue, in prior art, miniature cross-country match can be applied directly still without a complete power train system
Che Shang.
Therefore, it is necessary to a kind of small volume is developed, and compact conformation, light-weighted drive system so as to can get over small-sized
Directly use in wild racing car, fill the domestic gaps.
The content of the invention
It is an object of the invention to provide a kind of compact conformation, lightweight and electromotor output matching, torque output line
Property, there is the good drive system of ability, cross-country ability of getting rid of poverty in severe road conditions.
For achieving the above object, technical scheme of the present invention is realized in：The drive system includes the stepless changes of CVT
Fast device, secondary speed reduction box, internal spherical cage and jackshaft；Wherein, the upper belt pulley on the CVT bunchers is defeated with electromotor
Shaft is connected using flat key shaft hole matching, and upper belt pulley is connected with bottom pulley by transmission belt, is passed power by transmission belt
Pass bottom pulley；The bottom pulley is connected with the power input shaft in secondary speed reduction box, and the power in secondary speed reduction box is defeated
Shaft is connected with internal spherical cage, and the internal spherical cage is connected with jackshaft.
The secondary speed reduction box includes power input shaft, jackshaft, power output shaft, reducer shell end plate, covering bag
Coaming plate；Wherein, described power input shaft one end is machined with external screw thread, and the other end is machined with the first minor sprocket, on the external screw thread
There is nut；Described jackshaft one end is machined with flange, and the other end is machined with the second minor sprocket, and the first big sprocket wheel passes through spiral shell with flange
Bolt is connected, so that the first big sprocket wheel is fixed on jackshaft；The power output shaft includes left power output shaft and the right side
Power output shaft, is machined with first flange, is machined with second flange on the right power output shaft on the left power output shaft,
The second big sprocket wheel is fixed with first flange and second flange by bolt, so that the second big sprocket wheel is fixed on described moving
The centre position of power output shaft；Pretightning force between external screw thread and nut of the power input shaft by end, produces and hypodermis
Frictional force between belt wheel end face, makes power input shaft synchronous with bottom pulley, so as to the power of bottom pulley is passed to power
The first minor sprocket on input shaft, first minor sprocket by the first driving-chain be connected with the first big sprocket wheel on jackshaft into
Action edge is transmitted, and the second minor sprocket on jackshaft is connected with the second big sprocket wheel on power output shaft by the second driving-chain,
So as to power is continued to transmit；It is equipped with clutch shaft bearing group, second bearing on the reducer shell end plate from left to right successively
Group, 3rd bearing group, and it is interference fit；The power input shaft, jackshaft, power output shaft two ends respectively with decelerator
Clutch shaft bearing group, second bearing group, 3rd bearing group interference fit on housing end plate, sets covering outside the secondary speed reduction box
Plate is surrounded, is played a protective role.
Used as the preferred of the present invention, described internal spherical cage one end is machined with external splines, by external splines and left power output shaft
Coordinate with the internal spline on right power output shaft, end is spacing by circlip again, makes internal spherical cage be fixed on power output shaft
Two ends, so as to power to be passed to the internal spherical cage at two ends, the internal spherical cage other end and jackshaft by power output shaft
Connection, internal spherical cage constitute offset ball-cage constant velocity universal section, the offset ball-cage constant velocity universal section with jackshaft connection end
Inside is made up of steel ball, nonconcentric cage, inner race, by by the external splines of jackshaft end and nonconcentric cage
Spline fitted, realizes that power is transmitted.
Lightening recesses can be also machined with inside reducer shell end plate of the present invention, further mitigate drive system entirety
Weight；It is hollow-core construction that the power input shaft, jackshaft are in the middle of gear shaft, and power input shaft.
Description of the drawings
Fig. 1 is the rearview of drive system of the present invention.
Fig. 2 is the side view of drive system of the present invention.
Fig. 3 is the side view of secondary speed reduction box in drive system of the present invention.
Fig. 4 is the top view of secondary speed reduction box in drive system of the present invention.
Fig. 5 is secondary speed reduction box power input shaft of the present invention and sprocket wheel end view.
Fig. 6 is secondary speed reduction box power input shaft of the present invention and sprocket wheel axial view.
Fig. 7 is secondary speed reduction box jackshaft of the present invention and sprocket wheel end face view.
Fig. 8 is secondary speed reduction box jackshaft of the present invention and sprocket wheel axial view.
Fig. 9 is secondary speed reduction box jackshaft of the present invention and sprocket wheel other end view.
Figure 10 is secondary speed reduction box power output shaft of the present invention and sprocket wheel end view.
Figure 11 is secondary speed reduction box power output shaft of the present invention and sprocket wheel axial view.
Figure 12 is internal spherical cage axial view of the present invention.
Figure 13 is that internal spherical cage of the present invention coordinates figure with power output shaft.
Figure 14 is offset ball-cage constant velocity universal section expanded view of the present invention.
Advantages of the present invention and good effect：
1st, drive system of the present invention is differed greatly with traditional offroad vehicle drive system structure, is reduced unnecessary structure, is passed through
Using secondary speed reduction box, in the case of same speed reducing ratio, it is obviously reduced reduction box overall volume, structure is compacter, weight
Measure gentlier, speed reducing ratio and electromotor matched well, increasing torsion of slowing down, there is provided enough power, and fuel economy also get a promotion.
2nd, drive system of the present invention adopts CVT mechanical stepless transmissions, and under bad working environments, driver is without the need for changing manually
Gear, driver only need to control accelerator open degree size, you can linear control gear ratio, and then regulation speed, reduce driver and drive
Operating procedure during sailing, mitigates driving fatigue sense, and then enables driver to select more preferable traffic route, improve dynamic into
Achievement.
3rd, drive system internal spherical cage of the present invention and jackshaft connection end constitute offset ball-cage constant velocity universal section, work as transmission
When semiaxis swings, the length change that tire bump travel causes semiaxis is can compensate for it, save the free-sliding spline on traditional semiaxis.
4th, on miniature cross-country car, cross-country road conditions are with strong points for drive system specialized application of the present invention, can make which big
There is outstanding dynamic performance in the match of student's offroad racing, be conducive to racing car to obtain marvelous results.
Specific embodiment
In order to make, those skilled in the art are clearer, understand technical scheme of the present invention and its advantages and features, below
The present invention is described in detail with reference to accompanying drawing.
Refering to Fig. 1, drive system of the present invention include CVT bunchers I, secondary speed reduction box II, internal spherical cage 17 and
Jackshaft 18；Wherein, the upper belt pulley 1 on the CVT bunchers I adopts flat key shaft hole matching with engine output shaft
Connection, upper belt pulley 1 are connected with bottom pulley 3 by transmission belt 2, impart power to bottom pulley 3 by transmission belt 2；Institute
State bottom pulley 3 to be connected with the power input shaft in secondary speed reduction box II, the power output shaft and internal spherical cage in secondary speed reduction box
17 connections, the internal spherical cage 17 are connected with jackshaft 18.
Refering to Fig. 1 to Figure 11, the secondary speed reduction box II includes power input shaft 4, jackshaft 6, power output shaft 10, subtracts
Plate 16 is surrounded in fast device housing end plate 12, covering；Wherein, 4 one end of the power input shaft is machined with external screw thread 4-1, and the other end adds
Work has the first minor sprocket 5, has nut 4-2 on the external screw thread 4-1；6 one end of the jackshaft is machined with flange 6-1, the other end
The second minor sprocket 6-2 is machined with, the first big sprocket wheel 7 is bolted fixation with flange 6-1, so that the first big sprocket wheel 7 is solid
It is scheduled on jackshaft 6；The power output shaft 10 includes left power output shaft 10-1 and right power output shaft 10-2, described left dynamic
First flange 10-1-1 is machined with power output shaft 10-1, is machined with second flange 10-2- on the right power output shaft 10-2
1, the second big sprocket wheel 11 and first flange 10-1-1 and second flange 10-2-1 are fixed by bolt, so that second largest
Sprocket wheel 11 is fixed on the centre position of the power output shaft 10；External screw thread 4-1 and spiral shell of the power input shaft 4 by end
Pretightning force between female 4-2, produces frictional force with 3 end face of bottom pulley, makes power input shaft 4 synchronous with bottom pulley 3, so as to incite somebody to action
The power of bottom pulley 3 passes to the first minor sprocket 5 on power input shaft 4, and first minor sprocket 5 passes through the first driving-chain
8 are connected with the first big sprocket wheel 7 on jackshaft 6 into action edge transmission, and the second minor sprocket 6-2 on jackshaft 6 is passed by second
Dynamic chain 9 is connected with the second big sprocket wheel 11 on power output shaft 10, so as to continue to transmit power；The reducer shell end plate
It is equipped with clutch shaft bearing group 13, second bearing group 14,3rd bearing group 15 on 12 from left to right successively, and is interference fit；
The power input shaft 4, jackshaft 6,10 two ends of power output shaft respectively with reducer shell end plate 12 on clutch shaft bearing group
13rd, second bearing group 14,15 interference fit of 3rd bearing group, set covering and surround plate, play protection outside the secondary speed reduction box
Effect.
Lightening recesses can be also machined with inside the reducer shell end plate 12, are further mitigated drive system and are integrally weighed
Amount.
It is hollow-core construction that the power input shaft 4, jackshaft 6 are in the middle of gear shaft, and power input shaft 4.
Refering to Figure 12 to Figure 14,17 one end of the internal spherical cage is machined with external splines, by external splines and left power output shaft
Internal spline on 10-1 and right power output shaft 10-2 coordinates, and end is spacing by circlip again, is fixed on internal spherical cage 17
The two ends of power output shaft 10, so as to power to be passed to the internal spherical cage 17 at two ends, the internal spherical cage by power output shaft 10
17 other ends are connected with jackshaft 18, and internal spherical cage 17 constitutes offset ball-cage constant velocity universal section with 18 connection end of jackshaft,
Jackshaft 18 is imparted power to by offset ball-cage constant velocity universal section, wheel is ultimately transferred to.Offset ball-cage constant velocity
It is made up of steel ball 17-1, nonconcentric cage 17-2, inner race 17-3 inside universal joint, by by the outer flower of 18 end of jackshaft
Key is coordinated with the internal spline in nonconcentric cage 17-2, realizes that power is transmitted.Can compensate for that tire bump travel causes with it half
Shaft length changes, and saves the free-sliding spline on traditional semiaxis, and structure is advanced, compact, stable working.
The operation principle of drive system of the present invention：Power is directly output to CVT infinitely variable speeds by engine output shaft
The upper belt pulley 1 of device, imparts power to bottom pulley 3 by transmission belt 2, as bottom pulley 3 is passed through with power input shaft 4
Threaded pre-tightening force constraint is fixed, so power passes to bottom pulley 3 the first minor sprocket 5 on power input shaft 4 again, first
Minor sprocket 5 imparts power to the first big sprocket wheel 7 by the first driving-chain 8, and then passes to jackshaft 6, by jackshaft 6
Gear ratio between big minor sprocket, reaches the effect that increasing of slowing down is turned round, and in the same manner, power is led to by the second minor sprocket 6-2 on jackshaft 6
Cross the second driving-chain 9 and pass to the second big sprocket wheel 11, will eventually through left power output shaft 10-1 and right power output shaft 10-2
Internal spherical cage 17 of the power output to two ends, then jackshaft 18 is imparted power to by offset ball-cage constant velocity universal section, most
Wheel is passed to eventually.
Claims (4)
1. a kind of university students' offroad racing drive system, it is characterised in that：The drive system include CVT bunchers, two grades
Reduction box, internal spherical cage and jackshaft；Upper belt pulley on the CVT bunchers is connected with engine output shaft, epithelium
Belt wheel is connected with bottom pulley by transmission belt, imparts power to bottom pulley by transmission belt；The double reduction case and bag
Include power input shaft, jackshaft, power output shaft, reducer shell end plate, covering encirclement plate；Wherein, the reducer shell
Clutch shaft bearing group, second bearing group, 3rd bearing group is equipped with end plate；The power input shaft, jackshaft, power output shaft
Two ends respectively with reducer shell end plate on clutch shaft bearing group, second bearing group, 3rd bearing group interference fit, described two grades
Covering is set outside reduction box surrounds plate；Described power input shaft one end is machined with external screw thread, and the other end is machined with the first minor sprocket,
There is nut on the external screw thread；Described jackshaft one end is machined with flange, and the other end is machined with the second minor sprocket, the first big sprocket wheel
It is connected with flange, so that the first big sprocket wheel is fixed on jackshaft；The power output shaft includes left power output shaft
And right power output shaft, first flange is machined with the left power output shaft, is machined with second on the right power output shaft
Flange, the second big sprocket wheel is bolted with first flange and second flange so that the second big sprocket wheel be fixed on it is described
The centre position of power output shaft；Pretightning force between external screw thread and nut of the power input shaft by end, produces with
Frictional force between belt pulley end face, makes power input shaft synchronous with bottom pulley, dynamic so as to the power of bottom pulley is passed to
The first minor sprocket on power input shaft, first minor sprocket are connected with the first big sprocket wheel on jackshaft by the first driving-chain
Enter action edge transmission, the second minor sprocket on jackshaft is connected with the second big sprocket wheel on power output shaft by the second driving-chain
Connect, so as to continue to transmit power, the power output shaft is connected with internal spherical cage, and the internal spherical cage is connected with jackshaft, is led to
Cross jackshaft and finally impart power to wheel.
2. a kind of university students' offroad racing drive system according to claim 1, it is characterised in that：Described internal spherical cage one end
External splines is machined with, is coordinated with the internal spline on right power output shaft with left power output shaft by external splines, end passes through again
Circlip is spacing, makes internal spherical cage be fixed on the two ends of power output shaft, so as to power is passed to two by power output shaft
The internal spherical cage at end；The internal spherical cage other end is connected with jackshaft, and internal spherical cage constitutes offset ball with jackshaft connection end
Cage constant velocity universal section, imparts power to jackshaft by offset ball-cage constant velocity universal section.
3. a kind of university students' offroad racing drive system according to claim 1, it is characterised in that：The reducer shell
Lightening recesses are machined with inside end plate；It is hollow that the power input shaft, jackshaft are in the middle of gear shaft, and power input shaft
Structure.
4. a kind of university students' offroad racing drive system according to claim 2, it is characterised in that：The offset cage
It is made up of steel ball, nonconcentric cage, inner race inside constant velocity cardan joint, by the external splines of jackshaft end is protected with eccentric
The internal spline held in frame coordinates, and realizes that power is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999306.1A CN106515435A (en) | 2016-11-14 | 2016-11-14 | Drive system for undergraduate offroad racing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999306.1A CN106515435A (en) | 2016-11-14 | 2016-11-14 | Drive system for undergraduate offroad racing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106515435A true CN106515435A (en) | 2017-03-22 |
Family
ID=58352075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610999306.1A Pending CN106515435A (en) | 2016-11-14 | 2016-11-14 | Drive system for undergraduate offroad racing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106515435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196592A1 (en) * | 2018-04-09 | 2019-10-17 | 吴方平 | Vehicle transmission differential device |
| WO2023020147A1 (en) * | 2021-08-17 | 2023-02-23 | 马亮 | Transmission system |
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|---|---|---|---|---|
| EP0999381A2 (en) * | 1998-11-05 | 2000-05-10 | Fuji Jukogyo Kabushiki Kaisha | Drive system for vehicles |
| JP2001330095A (en) * | 2000-05-19 | 2001-11-30 | Daihatsu Motor Co Ltd | Continuously variable transmission |
| CN1868660A (en) * | 2005-05-27 | 2006-11-29 | 万向钱潮股份有限公司 | Internal Rzeppa assembling machine |
| CN201276394Y (en) * | 2008-09-18 | 2009-07-22 | 邓洪伟 | Reduction box of hoister |
| CN101956768A (en) * | 2010-09-01 | 2011-01-26 | 芜湖佳先传动轴有限公司 | Driving shaft for constant velocity universal joint |
| CN202923387U (en) * | 2012-11-02 | 2013-05-08 | 洛阳北方易初摩托车有限公司 | Driving transmission mechanism for small-sized low-speed scooters and trucks |
| CN104405835A (en) * | 2014-11-05 | 2015-03-11 | 芜湖富仕达机械有限公司 | Two-stage reducer transmission |
-
2016
- 2016-11-14 CN CN201610999306.1A patent/CN106515435A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0999381A2 (en) * | 1998-11-05 | 2000-05-10 | Fuji Jukogyo Kabushiki Kaisha | Drive system for vehicles |
| JP2001330095A (en) * | 2000-05-19 | 2001-11-30 | Daihatsu Motor Co Ltd | Continuously variable transmission |
| CN1868660A (en) * | 2005-05-27 | 2006-11-29 | 万向钱潮股份有限公司 | Internal Rzeppa assembling machine |
| CN201276394Y (en) * | 2008-09-18 | 2009-07-22 | 邓洪伟 | Reduction box of hoister |
| CN101956768A (en) * | 2010-09-01 | 2011-01-26 | 芜湖佳先传动轴有限公司 | Driving shaft for constant velocity universal joint |
| CN202923387U (en) * | 2012-11-02 | 2013-05-08 | 洛阳北方易初摩托车有限公司 | Driving transmission mechanism for small-sized low-speed scooters and trucks |
| CN104405835A (en) * | 2014-11-05 | 2015-03-11 | 芜湖富仕达机械有限公司 | Two-stage reducer transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196592A1 (en) * | 2018-04-09 | 2019-10-17 | 吴方平 | Vehicle transmission differential device |
| WO2023020147A1 (en) * | 2021-08-17 | 2023-02-23 | 马亮 | Transmission system |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170322 |