CN203479542U - Loading mechanism of electric automobile regenerative braking inertia test stand - Google Patents
Loading mechanism of electric automobile regenerative braking inertia test stand Download PDFInfo
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- CN203479542U CN203479542U CN201320582929.0U CN201320582929U CN203479542U CN 203479542 U CN203479542 U CN 203479542U CN 201320582929 U CN201320582929 U CN 201320582929U CN 203479542 U CN203479542 U CN 203479542U
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- regenerative braking
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Abstract
The utility model relates to a loading mechanism of an electric automobile regenerative braking inertia test stand, in particular to a mechanical device which can simulate vertical load changes of front and rear vehicle wheels in the actual automobile road braking process. The loading mechanism of the electric automobile regenerative braking inertia test stand comprises a driving system, loaded vehicle wheels, pair rollers, a rack and a loading mechanism arranged on the rack, wherein the driving system is connected with the loaded vehicle wheels through a drive half-axle, and the pair rollers are positioned at the lower part of the loaded vehicle wheels and rolled oppositely to the loaded vehicle wheels; the loading mechanism is hinged with the rack, and is connected with the drive half-axle through a loading bearing seat; and the loaded vehicle wheels are further provided with a brake. Through adjusting relative height of a lever hinge plane and a contact plane of the vehicle wheels and the pair rollers, the loading mechanism provided by the utility model accurately simulates the pitching moment of the ground braking force to the mass center of the whole vehicle during the actual automobile road braking process according to wheel bases and mass center height parameters of different simulation object vehicles, and has the advantages of good test repeatability and consistency, low cost, good safety, simple operation, and the like.
Description
Technical field
The present invention relates to a kind of electric automobile regenerative braking inertial test table load maintainer, be specifically related to a kind of mechanical hook-up that can simulate front and back wheel vertical load variation in real vehicle road braking procedure.
Background technology
Brake system is an important system of automobile, in order to ensure that the safe ，Ge state of automobile all spends the plenty of time and studies its structure and performance in the brake system of automobile.In actual braking procedure, ground damping force can produce pitching moment to car load barycenter, and while making to brake, automobile front-axle vertical load increases, and rear axle vertical load reduces.Braking system of electric car comprises hydraulic braking and electric braking, and in braking procedure, electrical brake system can convert the kinetic energy of electric automobile to electric energy recycling, has effectively improved the continual mileage of capacity usage ratio and electric automobile.In electric automobile braking procedure, also need rationally to regulate electric braking force and hydraulic braking force, can meet the requirement of automobile braking safety.In braking system of electric car performance history, utilize the automobile brake test bed simulation that can realize Braking, repeatability and the consistance of test are better than vehicle road test, and cost is low, and security is better.To the automobile brake test bed simulation to wheel vertical load, be generally vertical direction point of fixity and load at present, such load mode can not be simulated the load transfer situation of antero posterior axis in real vehicle road braking procedure.
Summary of the invention
The object of the invention is to overcome the defect that prior art exists, provide a kind of by the relative height of adjustment (adjusting) lever hinge plane and wheel and pair roller contact plane, can accurately simulate the electric automobile regenerative braking inertial test table load maintainer of ground damping force to the pitching moment of car load barycenter in real vehicle road braking procedure.
The technical scheme that realizes the object of the invention is: a kind of electric automobile regenerative braking inertial test table load maintainer, comprises drive system, stand under load wheel, pair roller, frame and be arranged on the load maintainer in frame; Described drive system is connected with stand under load wheel by jack shaft, described pair roller be positioned at stand under load wheel bottom and with stand under load wheel to rolling; Described load maintainer and frame are hinged, and are connected with jack shaft by load bearings seat; On described stand under load wheel, detent is also housed.
Technique scheme, described stand under load wheel comprises stand under load front-wheel and stand under load trailing wheel, and described stand under load front-wheel and stand under load trailing wheel are fixed on jack shaft by ring flange, and described drive system is connected with stand under load front-wheel by jack shaft; Described pair roller comprises front-wheel pair roller and trailing wheel pair roller, and described front-wheel pair roller and trailing wheel pair roller are fixedly connected on axle by ring flange, and described axle is connected with frame by bearing seat.
Technique scheme, described load maintainer comprises load bearings seat, loads lever, lever hinge and add loads; Described load bearings seat is fixedly installed on the jack shaft of stand under load wheel, and described load bearings seat is connected by bolt tightening with loading lever middle part; Described loading lever one end is connected with frame by lever hinge, and the other end is hung with and adds loads.
Technique scheme, described load bearings seat vertical direction is provided with and regulates the guide groove that loads lever link position.
Technique scheme, described frame inner side is vertically provided with loading lever junction the guide groove that regulates regulations and parameters chain connection position.
Technique scheme, described load maintainer comprises the front-wheel load maintainer that is positioned at stand under load front-wheel one side, comprises that front-wheel load bearings seat, front-wheel load regulations and parameters, front regulations and parameters hinge and front-wheel and add loads; And be positioned at the trailing wheel load maintainer of stand under load trailing wheel one side, comprise trailing wheel load bearings seat,, trailing wheel loads regulations and parameters, rear regulations and parameters hinge and trailing wheel and adds loads.
Technique scheme, described detent comprises front brake and rear brake, described front brake is bolted on front-wheel load bearings seat; Described rear brake is bolted on trailing wheel load bearings seat.
Technique scheme, described front-wheel loads lever and trailing wheel loading lever is towards the opposite.
Technique scheme, at least two of the guide grooves on described load bearings seat, described frame upper rail has one.
Technique scheme, described in to add loads be counterweight.
Adopt after technique scheme, the present invention has following positive effect: the present invention is according to the wheelbase of different simulated object cars and height of center of mass parameter, by the relative height of adjustment (adjusting) lever hinge plane and wheel and pair roller contact plane, accurately simulate the pitching moment of ground damping force to car load barycenter in real vehicle road braking procedure, have that test repeatability and consistance are good, cost is low, security is good, simple operation and other advantages, in order to produce braking safety, good electric automobile provides important leverage.
Accompanying drawing explanation
For content of the present invention is more easily expressly understood, according to instantiation also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein below
Fig. 1 is scheme of erection of the present invention;
Fig. 2 is real vehicle road braking force analysis figure;
Fig. 3 is front-wheel force analysis figure of the present invention;
Fig. 4 is trailing wheel force analysis figure of the present invention;
In figure 1, stand under load wheel; 11, stand under load front-wheel; 12, stand under load trailing wheel; 2, pair roller; 21, front-wheel pair roller; 22, trailing wheel pair roller; 3, frame; 4, load bearings seat; 41, front-wheel load bearings seat; 42, trailing wheel load bearings seat; 5, detent; 51, front brake; 52, rear brake; 6, axle; 61, bearing seat; 7, load lever; 71, front-wheel loads lever; 72, trailing wheel loads lever; 8, lever hinge; 81, front lever hinge; 82, rear lever hinge; 9, add loads; 91, front-wheel adds loads; 92, trailing wheel adds loads.
Embodiment
(example 1)
See Fig. 1, the present invention has drive system, stand under load wheel 1, pair roller 2, frame 3 and be arranged on the load maintainer in frame 3; Drive system is connected with stand under load wheel 1 by jack shaft, and pair roller 2 is positioned at stand under load wheel 1 bottom and rolls with 1 pair of stand under load wheel; Load maintainer and frame 3 are hinged, and are connected with jack shaft by load bearings seat 4; Detent 5 is also housed on stand under load wheel 1.Stand under load wheel 1 comprises stand under load front-wheel 11 and stand under load trailing wheel 12, and stand under load front-wheel 11 and stand under load trailing wheel 12 are fixed on jack shaft by ring flange, and drive system is connected with stand under load front-wheel 11 by jack shaft; Roller 2 comprises front-wheel pair roller 21 and trailing wheel pair roller 22, and front-wheel pair roller 21 and trailing wheel pair roller 22 are fixedly connected on axle 6 by ring flange, and axle 6 is connected with frame 3 by bearing seat 61.Front-wheel pair roller 21 drives 11 rotations of stand under load front-wheel, and trailing wheel pair roller 22 drives 12 rotations of stand under load trailing wheel, and front-wheel pair roller 21 and trailing wheel pair roller 22 play simulation front and back wheel and roll on road surface.
Load maintainer of the present invention comprises load bearings seat 4, loads lever 7, lever hinge 8 and add loads 9; Load bearings seat 4 is fixedly installed on the jack shaft of stand under load wheel 1, and load bearings seat 4 is connected by bolt tightening with loading lever 7 middle parts; Load lever 7 one end and be connected with frame 3 by lever hinge 8, the other end is hung with and adds loads 9.
Preferably, load maintainer of the present invention comprises again the front-wheel load maintainer that is positioned at stand under load front-wheel 11 1 sides, comprises that front-wheel load bearings seat 41, front-wheel load regulations and parameters 71, front regulations and parameters hinge 81 and front-wheel and add loads 91; And be positioned at the trailing wheel load maintainer of stand under load trailing wheel 12 1 sides, comprise that trailing wheel load bearings seat 42, trailing wheel load regulations and parameters 72, rear regulations and parameters hinge 82 and trailing wheel and add loads 92.
Preferably, moving device 5 comprises front brake 51 and rear brake 52, and front brake 51 is bolted on front-wheel load bearings seat 41; Rear brake 52 is bolted on trailing wheel load bearings seat 42.
As shown in Figure 2,
,
be respectively ground to the normal reaction of front and back wheel;
,
for ground damping force;
for automobile gravity;
for height of center of mass;
for the distance of barycenter to front axle center line;
for the distance of barycenter to rear shaft center's line; L is wheelbase.According to principle of moment balance, when severity of braking is
time front and back wheel ground normal reaction be respectively:
,
.Wherein
the part of front and back wheel load transfer in real vehicle road braking procedure.
In the front-wheel load maintainer shown in Fig. 3,
for front-wheel and pair roller surface of contact are to front-wheel rotation center distance;
for front-wheel and pair roller surface of contact load lever hinge axial line distance to front-wheel;
for front-wheel loads lever hinge axis to front-wheel rotation center distance;
for front-wheel rotation center adds loads hitch point distance to front-wheel.
for in front wheel brake process to roll wheel to front-wheel the acting force along surface of contact tangential direction;
for the normal reaction of pair roller to front-wheel, the size of this power with
equate.According to front-wheel equalising torque relation, have
1., in formula
for the total moment of inertia on front-wheel,
for braking deceleration.According to whole load maintainer equalising torque relation, have
2., convolution 1. 2., and will
substitution can obtain
.Again according to energy conservation:
,
therefore above formula abbreviation is
.From
expression formula can find out, specific vehicle for simulation, as long as regulate loading lever hinge center to the distance of front-wheel and pair roller surface of contact according to real vehicle height of center of mass and wheelbase parameter, just can accurately simulate the situation that in real vehicle road braking procedure, front axle vertical load increases.
As the preferred embodiment of the present invention, front-wheel loads between lever 71 and front-wheel load bearings seat 41 and is bolted, 41 vertical direction working channels of front-wheel load bearings, adjustable front-wheel loads the link position of lever 71, guide groove is at least set to two, can improve the verticality of strength of joint, stability and loading direction between the two, make experimental data more meet real vehicle road braking procedure; Front-wheel loads lever 71 and is connected with frame 3 by front lever hinge 81, frame 3 vertical direction working channels, adjustable front lever hinge 81 link positions.According to real vehicle calculation of parameter, go out
numerical value, then regulate the two bolted positions of place's guide groove to change the position that front-wheel loads the vertical direction of lever 7 simultaneously, just can accurately simulate the front-wheel stressing conditions in real vehicle road braking procedure.
In the trailing wheel load maintainer shown in Fig. 4,
for trailing wheel and pair roller surface of contact are to trailing wheel rotation center distance;
for trailing wheel and pair roller surface of contact load lever hinge axial line distance to trailing wheel;
for trailing wheel loads lever hinge axis to trailing wheel rotation center distance;
for trailing wheel rotation center adds loads hitch point distance to trailing wheel.
for in trailing wheel braking procedure to roll wheel to trailing wheel the acting force along surface of contact tangential direction;
for the normal reaction of pair roller to trailing wheel, the size of this power with
equate.According to trailing wheel equalising torque relation, have
1., in formula
for the total moment of inertia on trailing wheel,
for braking deceleration.According to whole load maintainer equalising torque relation, have
2., convolution 1. 2., and will
substitution can obtain
.Again according to energy conservation:
,
therefore above formula abbreviation is
.From
expression formula can find out, specific vehicle for simulation, as long as regulate loading lever hinge center to the distance of trailing wheel and pair roller surface of contact according to real vehicle height of center of mass and wheelbase parameter, just can accurately simulate the situation that in real vehicle road braking procedure, rear axle load increases.
As the preferred embodiment of the present invention, trailing wheel loads between lever 72 and trailing wheel load bearings seat 42 and is bolted, and trailing wheel load bearings seat 72 vertical directions are processed with guide groove, and adjustable trailing wheel loads lever 72 link positions; Trailing wheel loads lever 72 and is connected with frame 3 by rear lever hinge 82, frame 3 vertical direction working channels, the link position of adjustable rear lever hinge 82.According to real vehicle calculation of parameter, go out
numerical value, then regulate the two bolted positions of place's guide groove to change the upright position that trailing wheel loads lever 72 simultaneously, just can accurately simulate the trailing wheel stressing conditions in real vehicle road braking procedure.
Above-described instantiation; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only instantiation of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an electric automobile regenerative braking inertial test table load maintainer, is characterized in that: comprise drive system, stand under load wheel (1), pair roller (2), frame (3) and be arranged on the load maintainer in frame (3); Described drive system is connected with stand under load wheel (1) by jack shaft, described pair roller (2) be positioned at stand under load wheel (1) bottom and with stand under load wheel (1) to rolling; Described load maintainer and frame (3) are hinged, and are connected with jack shaft by load bearings seat (4); Detent (5) is also housed on described stand under load wheel (1).
2. electric automobile regenerative braking inertial test table load maintainer according to claim 1, it is characterized in that: described stand under load wheel (1) comprises stand under load front-wheel (11) and stand under load trailing wheel (12), described stand under load front-wheel (11) and stand under load trailing wheel (12) are fixed on jack shaft by ring flange, and described drive system is connected with stand under load front-wheel (11) by jack shaft; Described pair roller (2) comprises front-wheel pair roller (21) and trailing wheel pair roller (22), it is upper that described front-wheel pair roller (21) and trailing wheel pair roller (22) are fixedly connected on axle (6) by ring flange, and described axle (6) is connected with frame (3) by bearing seat (61).
3. electric automobile regenerative braking inertial test table load maintainer according to claim 2, is characterized in that: described load maintainer comprises load bearings seat (4), loads lever (7), lever hinge (8) and add loads (9); Described load bearings seat (4) is fixedly installed on the jack shaft of stand under load wheel (1), and described load bearings seat (4) is connected by bolt tightening with loading lever (7) middle part; Described loading lever (7) one end is connected with frame (3) by lever hinge (8), and the other end is hung with and adds loads (9).
4. electric automobile regenerative braking inertial test table load maintainer according to claim 3, is characterized in that: described load bearings seat (4) vertical direction is provided with and regulates the guide groove that loads lever (7) link position.
5. electric automobile regenerative braking inertial test table load maintainer according to claim 4, is characterized in that: described frame (3) inner side is vertically provided with loading lever (7) junction the guide groove that regulates regulations and parameters hinge (8) link position.
6. according to the electric automobile regenerative braking inertial test table load maintainer described in claim 3 ~ 5 any one claim, it is characterized in that: described load maintainer comprises the front-wheel load maintainer that is positioned at stand under load front-wheel (11) one sides, comprise that front-wheel load bearings seat (41), front-wheel load regulations and parameters (71), front regulations and parameters hinge (81) and front-wheel and add loads (91); And be positioned at the trailing wheel load maintainer of stand under load trailing wheel (12) one sides, comprise that trailing wheel load bearings seat (42), trailing wheel load regulations and parameters (72), rear regulations and parameters hinge (82) and trailing wheel and add loads (92).
7. electric automobile regenerative braking inertial test table load maintainer according to claim 6, it is characterized in that: described detent (5) comprises front brake (51) and rear brake (52), described front brake (51) is bolted on front-wheel load bearings seat (41); Described rear brake (52) is bolted on trailing wheel load bearings seat (42).
8. electric automobile regenerative braking inertial test table load maintainer according to claim 6, is characterized in that: described front-wheel loads lever (71) and trailing wheel loading lever (72) is towards the opposite.
9. electric automobile regenerative braking inertial test table load maintainer according to claim 5, is characterized in that: at least two of the guide grooves on described load bearings seat (4), described frame (3) upper rail has one.
10. electric automobile regenerative braking inertial test table load maintainer according to claim 6, is characterized in that: described in to add loads (9) be counterweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582929.0U CN203479542U (en) | 2013-09-22 | 2013-09-22 | Loading mechanism of electric automobile regenerative braking inertia test stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582929.0U CN203479542U (en) | 2013-09-22 | 2013-09-22 | Loading mechanism of electric automobile regenerative braking inertia test stand |
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| Publication Number | Publication Date |
|---|---|
| CN203479542U true CN203479542U (en) | 2014-03-12 |
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|---|---|---|---|
| CN201320582929.0U Withdrawn - After Issue CN203479542U (en) | 2013-09-22 | 2013-09-22 | Loading mechanism of electric automobile regenerative braking inertia test stand |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487263A (en) * | 2013-09-22 | 2014-01-01 | 江苏大学 | Electric car regenerative braking inertia test stand loading mechanism |
| CN109115514A (en) * | 2018-07-16 | 2019-01-01 | 江苏大学 | A kind of adjustable-angle road imitation tester and method for testing electric car |
-
2013
- 2013-09-22 CN CN201320582929.0U patent/CN203479542U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487263A (en) * | 2013-09-22 | 2014-01-01 | 江苏大学 | Electric car regenerative braking inertia test stand loading mechanism |
| CN103487263B (en) * | 2013-09-22 | 2015-11-18 | 江苏大学 | A kind of electric automobile regenerative braking inertial test table load maintainer |
| CN109115514A (en) * | 2018-07-16 | 2019-01-01 | 江苏大学 | A kind of adjustable-angle road imitation tester and method for testing electric car |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151118 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151118 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |