CN103033370A - Rotational-inertia-adjustable car braking detection platform flywheel - Google Patents
Rotational-inertia-adjustable car braking detection platform flywheel Download PDFInfo
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- CN103033370A CN103033370A CN2012105557737A CN201210555773A CN103033370A CN 103033370 A CN103033370 A CN 103033370A CN 2012105557737 A CN2012105557737 A CN 2012105557737A CN 201210555773 A CN201210555773 A CN 201210555773A CN 103033370 A CN103033370 A CN 103033370A
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Abstract
The invention discloses a rotational-inertia-adjustable car braking detection platform flywheel which comprises a wheel rim, a wheel hub, the wheel rim and the wheel hub are connected with each other through spoke cylinders, spokes are arranged inside the spoke cylinders, spoke planet gears are arranged at one ends of the spokes, the ends are inserted into the wheel hub, spoke blocks are arranged on the spokes, the spokes are assembled inside the spoke cylinders through spoke bearings, a reducer is arranged on one side of the wheel hub, a stepping motor and a gear drive pair are arranged inside the reducer, the stepping motor is meshed with a driving gear of the gear drive pair through worms and worm gears, a reducer output shaft is further arrange inside the reducer, a driven gear of a second gear drive pair is assembled on the reducer output shaft, a sun gear is arranged at the other end of the reducer output shaft, and the sun gear is meshed with the spoke planet gear. The rotational-inertia-adjustable car braking detection platform flywheel increases detection precision of a car performance detection platform and is capable of simulating real quality, inertia and energy of motion of a car which is under brake performance detection, so that a simulating device of the detection platform can better reflect a real braking situation.
Description
Technical field
The present invention relates to a kind of car brakeing checkout equipment, relate in particular to a kind of car brakeing check-out console flywheel of regulating moment of inertia.
Background technology
The develop rapidly of electronic technology makes its application at automotive field more and more, various new technologies occurred at automobile.Development along with society, the highway total kilometrage increases every year, highway pavement conditions at different levels are also become better and better, meanwhile, the speed of a motor vehicle of automobile is also in continuous improve, the traffic accident disaster of bringing thus is also of common occurrence, and the shared proportion of the traffic accident that wherein causes owing to vehicle braking performances is bad is sizable.What current car owner more paid attention to when buying car is the security performance of vehicle, and braking ability is most critical certainly, and good braking ability also is a large attraction of each vehicle, therefore the new technologies of a large amount of material resources energy research and development of the numerous and confused input of each auto vendor braking both at home and abroad.In today, the new technology successful Application of a lot of brakings aspect has been arranged to automobile, such as car brakeing anti-lock braking system (ABS), the new technologies such as vehicle electric braking force distribution system (EBD).But after using these new technologies, can produce which type of impact to the braking ability of automobile, perhaps whether produce an effect is obvious, all needs corresponding checkout equipment to verify.Common checkout equipment is exactly the anti-force type brake test bench at present, and the ABS service check platform that can be used for detecting is relatively less at home, EBD service check platform or even vacancy, because these check-out consoles want to record more accurately the braking ability of vehicle, with regard to the necessary better damped condition of simulating vehicle.The complete vehicle curb weight of the braking ability of vehicle and vehicle itself is undivided, so check-out console wants to record accurately data, the at first necessary preferably complete vehicle curb weight of simulated automotive.
The method that is applied at present the simulating vehicle quality on the car brakeing check-out console is exactly to realize by the moment of inertia that flywheel produces.In the prior art structure of flywheel as shown in Figure 6, one-piece construction may be summarized to be wheel rim, spoke and wheel hub three parts; The form of employing perforate on spoke forms the flywheel disc, and moment of inertia is definite value during its work, can't change, so applicable situation is specific, single.
Vehicle is different, and corresponding car mass is also different, and the method that present check-out console is often taked is exactly to prepare the flywheel of different quality, according to the quality of vehicle, comes corresponding with the quality of automobile by the quantity of plus-minus Flywheel disc.For different automobile types, this method need to be prepared the combination of various mass flywheels, and number is various, and needs artificial plus-minus Flywheel disc quantity, and complex operation is difficult to realize the accurate corresponding of moment of inertia and whole vehicle quality to be detected, makes and detects the error increase.In addition, because coiling quality, fix each of flywheel, so within the specific limits, the car mass that flywheel can be simulated is segmentation, discrete, can not accurately mate car mass, just strengthen thus the error that detects data, reduce detection accuracy.
Summary of the invention
For the deficiency that present braking ability check-out console exists, the invention provides a kind of car brakeing check-out console flywheel gear with the moving inertia function of self-regulating rotary, with the complete vehicle curb weight of simulating vehicle accurately, easily.
In order to realize above-mentioned technical assignment, the present invention adopts following technical scheme:
A kind of car brakeing check-out console flywheel of regulating moment of inertia, comprise wheel rim and wheel hub, described wheel rim is connected the spoke cylinder and connects with wheel hub, in the spoke cylinder, be provided with the spoke axle, the end that the spoke shaft extension enters wheel hub is equipped with a spoke axle planetary gear, at the spoke axle spoke piece is installed, the spoke axle is assemblied in the spoke cylinder by the spoke axle bearing; Side at wheel hub is provided with speed reduction unit, be provided with stepper motor and gear driving pair in the speed reduction unit, stepper motor meshes by the driving gear in worm and gear and the gear driving pair, also be provided with reducer output shaft in the described speed reduction unit, follower gear in the gear driving pair is assemblied on the reducer output shaft, the other end at reducer output shaft is equipped with a sun gear, sun gear and the engagement of described spoke axle planetary gear.
Described spoke axle adopts screw rod, and the helicla flute of this screw rod is processed into nonocclusive tubulose helicla flute, should be provided with the steel ball that can roll along helicla flute in helicla flute, and the diameter of steel ball is greater than the spiral fluted degree of depth; The spoke axle is assemblied in the spoke cylinder by the spoke axle bearing.
Described spoke piece adopts nut, and the helicla flute of this nut matches with the helicla flute of screw rod, and when making nut be assemblied on the screw rod, the helicla flute deepest point of nut contacts with steel ball; The spoke piece adopts the larger metal material of density to make.
One end of described reducer output shaft is assemblied in the wheel hub by hub bearing, and the other end of reducer output shaft is assemblied in the bearing saddle bore of speed reduction unit inside.
Described spoke axle bearing and hub bearing all adopt taper roll bearing.
Driving gear in the described gear driving pair, follower gear all adopt cylindric spiral gear; Described spoke axle planetary gear and sun gear all adopt cone gear.
The present invention has improved the accuracy that detects automobile ABS, EBD performance bench teat means, can simulate real quality, inertia and kinetic energy that braking ability detects vehicle, makes the analogue means of check-out console can better embody true brake condition; Therefore this device can realize that Rotary Inertia of Flywheel in very large range realizes the variation of nearly continuity because the spoke piece adopts the larger metal manufacturing of density, and therefore the complete vehicle quality with vehicle to be detected is corresponding one by one exactly, has greatly improved accuracy of detection.This device is not only applicable to various brake property test platforms, can make by simple and appropriate adjustment control module it be applied to the various occasions that need to change moment of inertia yet, and is applied widely.
Description of drawings
Fig. 1 is integral mechanical structure front view of the present invention;
Fig. 2 is integral mechanical structure left view of the present invention;
Fig. 3 is spoke axle and spoke block structured schematic diagram among the present invention;
Fig. 4 is spoke axle and spoke block structured cut-open view among the present invention;
Fig. 5 is the worm gear structure schematic diagram in the speed reduction unit of the present invention;
Fig. 6 is the structural representation of flywheel in the prior art;
The implication of number in the figure: 1-wheel rim, 2-spoke cylinder, 3-wheel hub, 4-spoke axle, 5-spoke piece, 6-spoke axle planetary gear, 7-spoke axle bearing, 8-speed reduction unit, 9-hub bearing, 10-reducer output shaft, 11-sun gear, 12-steel ball, 81-follower gear, 82-stepper motor, 83-worm screw, 84-worm gear, 85-driving gear, 86-intermediate shaft;
Below in conjunction with accompanying drawing the present invention is described in further detail.
Embodiment
In order more to clearly demonstrate the technical characterstic of this programme, below in conjunction with the drawings and specific embodiments this programme is set forth.
Defer to technique scheme, as depicted in figs. 1 and 2, a kind of car brakeing check-out console flywheel of regulating moment of inertia, comprise wheel rim 1 and wheel hub 3, described wheel rim 1 is connected with wheel hub by 2 connections of spoke cylinder, is provided with spoke axle 4 in spoke cylinder 2, and the end that spoke axle 4 stretches into wheel hub 3 is equipped with a spoke axle planetary gear 6, at spoke axle 4 spoke piece 5 is installed, spoke axle 4 is assemblied in the spoke cylinder 2 by spoke axle bearing 7; Side at wheel hub 3 is provided with speed reduction unit 8, be provided with stepper motor 82 and gear driving pair in the speed reduction unit 8, stepper motor 82 is by driving gear 85 engagements in worm and gear and the gear driving pair, also be provided with reducer output shaft 10 in the described speed reduction unit 8, follower gear 81 in the gear driving pair is assemblied on the reducer output shaft 10, the other end at reducer output shaft 10 is equipped with a sun gear 11, sun gear 11 and described spoke axle planetary gear 6 engagements.
In the present invention, flywheel does not adopt the web pattern form, but has adopted the version of spoke cylinder 2, makes the quality of himself more focus on the edge, has greatly improved the moment of inertia of device.
Described spoke axle 4 is screw rods, and spoke piece 5 is nuts, and spoke axle 4(is screw rod) rotation can to make spoke piece 5(be nut) radial motion.In order to reduce the frictional resistance between spoke axle 4 and the spoke piece 5, screw thread between the two with 12 generations of many steel balls of rolling along helicla flute it, make sliding friction become rolling friction.All process nonocclusive tubulose helicla flute on spoke axle 4 and the spoke piece 5, namely this spiral fluted xsect is the major arc greater than semicircle, as shown in Figure 3 and Figure 4, has been full of steel ball 12 in the groove, and steel ball 12 can roll along helicla flute; The spiral fluted degree of depth is less than the diameter of steel ball 12 and greater than the radius of steel ball 12, the spiral fluted width is slightly larger than the diameter of steel ball 12 on the screw rod, can make like this to slide in the helicla flute of steel ball 12 on screw rod and can not drop out; Spiral fluted is offered and should be matched with the helicla flute of screw rod on the nut, and when namely nut was assemblied on the screw rod, the helicla flute deepest point of nut contacted with steel ball 12, by the rolling of steel ball 12 in helicla flute, makes the nut can moving axially along screw rod.
Described spoke axle 4 two ends are assemblied in the spoke cylinder 2 by spoke axle bearing 7, because the flywheel rotation can produce outside centrifugal force, the radial force that produces during 6 engagement of spoke axle planetary gear and spoke piece 5 and spoke axle 4 have inside gravity from certain stage in rotary course, so spoke axle bearing 7 adopts taper roll bearing, can bear the power of different spoke axle 4 directions; The bearing that while hub bearing 9 and speed reduction unit 8 interior each turning axle are two sections all uses taper roll bearing, to bear the axial force of sense of rotation; Bearing in the speed reduction unit 8 all is supported in the seat hole of speed reduction unit 8 housings.
Described spoke piece 5 is made by the larger metal material of density, and each spoke piece 5 all has the quality of very heavy equalization, and spoke piece 5 can move to each position on the spoke axle 4 with very little friction force along spoke axle 4 axial directions under the drive of stepper motor 82.Owing to having adopted the structure of circulating ball type between spoke axle 4 and the spoke piece 5, make the friction between the two become rolling friction by sliding friction, significantly reduced the resistance of motion, reducing of the resistance of motion guaranteed that equally 82 of stepper motors need the motor of selection of small power namely can realize back and forth moving freely of spoke piece 5.
Described speed reduction unit 8 adopts the two-stage transmission, and the first order adopts worm and gear to slow down, and slant gear transmission is adopted in the second level.Adopt the first order transmission of worm and gear can realize very large ratio of gear, so the ratio of gear of speed reduction unit 8 integral body is very large, can amplifies enough multiples to the less moment of torsion that stepper motor 82 produces, move radially along flywheel to drive four spoke pieces 5.The forward efficiency of first order worm and gear 83 transmissions of speed reduction unit 8 is very high, and reverse efficiency is very low, namely has nonreversibility, the motion of spoke piece 5 can only rotarily driving by stepper motor 82, and the axial force that is produced by the engagement of spoke piece 5 centrifugal force and bevel gear and moment etc. all can not drag stepper motor 82 rotations, function with automatic locking does not need special lockable mechanism.Although 8 of speed reduction units adopt double reduction, but because the first order adopts Worm Wheel System to slow down, comparing other ordinary gears slows down, its advantage is, Worm Wheel System can be in the situation that reduced size be realized very large ratio of gear, and have that gear teeth bending strength is high, the advantage such as stable drive, noise are little.Because speed reduction unit 8 has very large ratio of gear, it is outstanding that its deceleration increases torsion effect, so power source can be selected lower-powered stepper motor 82.
The present invention adopts stepper motor 82 as power source, it is advantageous that accurately control step stroke of stepper motor 82, also just can control accurately the position of spoke piece 5, increase the position signalling that extra displacement transducer removes to obtain spoke piece 5 thereby saved, therefore also reduced the cost of monitor station.
The course of work of the present invention is as follows:
The car brakeing check-out console flywheel of regulating moment of inertia of the present invention is connected stepper motor 82 by driving circuit in use with computing machine in the monitor station control system; Be inserted with data collecting card in the computing machine in addition, only four road wheel load collecting sensor signals on the monitor station need to be got final product.
The ratio of gear of speed reduction unit 8 is known, and so just can convert when stepper motor 82 rotates a fixing turn obtains the rotation number of turns of spoke axle 4, and the spiral fluted pitch on the spoke axle 4 also is known, therefore just can learn the moving displacement of spoke piece 5.The signal that computing machine sends the accurately rotating cycle of control step motor 82 is the stepping stroke, reach spoke axle 4 by certain ratio of gear, the stepping stroke of motor is converted to the movement travel of spoke piece 5, that is, the linear funtcional relationship of moving displacement of the rotation number of turns of stepper motor 82 and spoke piece 5.Spoke piece 5 each moment of inertia when spoke axle 4 diverse location can obtain by testing tool, the moment of inertia of the correspondence of spoke piece 5 when each position is deposited in computing machine, the complete vehicle quality of vehicle to be detected and the moment of inertia of flywheel have certain funtcional relationship, also deposit simultaneously computing machine in, so just can be mapped the complete vehicle quality of the rotation number of turns of stepper motor 82 and detection vehicle one by one.
After vehicle reached monitor station and comes to a complete stop, monitor station was started working, and before the monitor station cylinder rotated, namely vehicle was under quiescent conditions, and the wheel load sensor on the monitor station can obtain the load of vehicle antero posterior axis, and this information is passed to computing machine.Computing machine fast processing and calculating wheel load signal, try to achieve the number of turns that stepper motor 82 will rotate, then send instruction, control step motor 82 rotates the corresponding number of turns, and record the at this moment position of spoke piece 5, and do not need special displacement transducer to obtain the position of spoke piece 5; Stepper motor 82 produces power and passes to spoke piece 5 through speed reduction unit 8, and after stepper motor 82 stalls, computing machine is controlled monitor station rolling rotation again, measures corresponding performance parameter.
Although below by reference to the accompanying drawings embodiment of the present invention are described; but the present invention is not limited to above-mentioned specific embodiments; above-mentioned specific embodiments only is schematic, guiding; rather than restrictive, all equivalents of doing on present techniques scheme basis all fall into protection scope of the present invention.
Claims (6)
1. the car brakeing check-out console flywheel that can regulate moment of inertia, comprise wheel rim (1) and wheel hub (3), it is characterized in that, described wheel rim (1) is connected 3 with wheel hub) connect by spoke cylinder (2), in spoke cylinder (2), be provided with spoke axle (4), the end that spoke axle (4) stretches into wheel hub (3) is equipped with a spoke axle planetary gear (6), at spoke axle (4) spoke piece (5) is installed, and spoke axle (4) is assemblied in the spoke cylinder (2) by spoke axle bearing (7); Side at wheel hub (3) is provided with speed reduction unit (8), be provided with stepper motor (82) and gear driving pair in the speed reduction unit (8), stepper motor (82) meshes by the driving gear in worm and gear and the gear driving pair (85), also be provided with reducer output shaft (10) in the described speed reduction unit (8), follower gear (81) in the second level gear driving pair of speed reduction unit (8) is assemblied on the reducer output shaft (10), the other end at reducer output shaft (10) is equipped with a sun gear (11), sun gear (11) and described spoke axle planetary gear (6) engagement.
2. the car brakeing check-out console flywheel of regulating moment of inertia as claimed in claim 1, it is characterized in that, described spoke axle (4) adopts screw rod, the helicla flute of this screw rod is processed into nonocclusive tubulose helicla flute, in helicla flute, be provided with the steel ball (12) that can roll along helicla flute, and the diameter of steel ball (12) is greater than the spiral fluted degree of depth; Spoke axle (4) is assemblied in the spoke cylinder (2) by spoke axle bearing (7).
3. the car brakeing check-out console flywheel of regulating moment of inertia as claimed in claim 1, it is characterized in that, described spoke piece (5) adopts nut, the helicla flute of this nut matches with the helicla flute of described screw rod, when making nut be assemblied on the screw rod, the helicla flute deepest point of nut contacts with steel ball (12); Spoke piece (5) adopts the larger metal material of density to make.
4. the car brakeing check-out console flywheel of regulating moment of inertia as claimed in claim 1, it is characterized in that, one end of described reducer output shaft (10) is assemblied in the wheel hub (3) by hub bearing (9), and the other end of reducer output shaft (10) is assemblied in the inner bearing saddle bore of speed reduction unit (8).
5. the car brakeing check-out console flywheel of regulating moment of inertia as claimed in claim 1 is characterized in that, described spoke axle bearing (7) and hub bearing (9) all adopt taper roll bearing.
6. the car brakeing check-out console flywheel of regulating moment of inertia as claimed in claim 1 is characterized in that, the driving gear in the described gear driving pair (85) and follower gear all adopt cylindric spiral gear; Described spoke axle planetary gear (6) and sun gear (11) all adopt cone gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105557737A CN103033370A (en) | 2012-12-19 | 2012-12-19 | Rotational-inertia-adjustable car braking detection platform flywheel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105557737A CN103033370A (en) | 2012-12-19 | 2012-12-19 | Rotational-inertia-adjustable car braking detection platform flywheel |
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| CN103033370A true CN103033370A (en) | 2013-04-10 |
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| CN2012105557737A Pending CN103033370A (en) | 2012-12-19 | 2012-12-19 | Rotational-inertia-adjustable car braking detection platform flywheel |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674426A (en) * | 2013-11-26 | 2014-03-26 | 西北工业大学 | Stepless adjustable rotational inertia simulator |
| CN106248405A (en) * | 2016-07-19 | 2016-12-21 | 中国汽车工程研究院股份有限公司 | A kind of adjustable automobile steering wheel rotary inertia analog |
| CN106248382A (en) * | 2015-06-15 | 2016-12-21 | 北京富华惠航航空科技有限公司 | Starter testing stand |
| CN107966258A (en) * | 2016-10-20 | 2018-04-27 | 北京精密机电控制设备研究所 | A kind of qualitative attribute simulator |
| CN108340733A (en) * | 2018-04-24 | 2018-07-31 | 吉林大学 | A kind of built-in sprung-hub wheel |
| CN108444684A (en) * | 2018-03-08 | 2018-08-24 | 南京航空航天大学 | Rotary type driving wheel simulation load experiment porch |
| CN109141747A (en) * | 2018-07-04 | 2019-01-04 | 安徽江淮汽车集团股份有限公司 | Rotary inertia regulating mechanism |
| CN112798299A (en) * | 2021-02-02 | 2021-05-14 | 山东正能汽车检测装备有限公司 | Automobile emission and automobile comprehensive safety inspection method |
| CN113083649A (en) * | 2021-03-10 | 2021-07-09 | 同济大学 | Space cam type inertial container |
| CN113375947A (en) * | 2021-06-04 | 2021-09-10 | 浙江佳骏汽车零部件有限公司 | Detection device for automobile brake production |
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| US3248967A (en) * | 1964-01-06 | 1966-05-03 | Exxon Research Engineering Co | Variable inertia liquid flywheel |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674426A (en) * | 2013-11-26 | 2014-03-26 | 西北工业大学 | Stepless adjustable rotational inertia simulator |
| CN103674426B (en) * | 2013-11-26 | 2015-12-30 | 西北工业大学 | A kind of stepless adjustable moment of inertia analogue means |
| CN106248382A (en) * | 2015-06-15 | 2016-12-21 | 北京富华惠航航空科技有限公司 | Starter testing stand |
| CN106248405A (en) * | 2016-07-19 | 2016-12-21 | 中国汽车工程研究院股份有限公司 | A kind of adjustable automobile steering wheel rotary inertia analog |
| CN107966258B (en) * | 2016-10-20 | 2020-03-17 | 北京精密机电控制设备研究所 | Mass attribute simulation device |
| CN107966258A (en) * | 2016-10-20 | 2018-04-27 | 北京精密机电控制设备研究所 | A kind of qualitative attribute simulator |
| CN108444684A (en) * | 2018-03-08 | 2018-08-24 | 南京航空航天大学 | Rotary type driving wheel simulation load experiment porch |
| CN108340733A (en) * | 2018-04-24 | 2018-07-31 | 吉林大学 | A kind of built-in sprung-hub wheel |
| CN108340733B (en) * | 2018-04-24 | 2024-03-15 | 吉林大学 | Wheel with built-in suspension |
| CN109141747A (en) * | 2018-07-04 | 2019-01-04 | 安徽江淮汽车集团股份有限公司 | Rotary inertia regulating mechanism |
| CN109141747B (en) * | 2018-07-04 | 2019-08-06 | 安徽江淮汽车集团股份有限公司 | Rotary inertia regulating mechanism |
| CN112798299A (en) * | 2021-02-02 | 2021-05-14 | 山东正能汽车检测装备有限公司 | Automobile emission and automobile comprehensive safety inspection method |
| CN113083649A (en) * | 2021-03-10 | 2021-07-09 | 同济大学 | Space cam type inertial container |
| CN113375947A (en) * | 2021-06-04 | 2021-09-10 | 浙江佳骏汽车零部件有限公司 | Detection device for automobile brake production |
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Application publication date: 20130410 |