CN204556273U - Simulate the three rotary drum pick-up units on the straight road surface of different attachment coefficient - Google Patents
Simulate the three rotary drum pick-up units on the straight road surface of different attachment coefficient Download PDFInfo
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- CN204556273U CN204556273U CN201520278075.6U CN201520278075U CN204556273U CN 204556273 U CN204556273 U CN 204556273U CN 201520278075 U CN201520278075 U CN 201520278075U CN 204556273 U CN204556273 U CN 204556273U
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Abstract
The utility model discloses a kind of three rotary drum pick-up units of simulating the straight road surface of different attachment coefficient, comprise base, the middle part of base has groove, and base has been arranged side by side successively drive roll axle, back-up roller axle and follower rollers axle, back-up roller axle is positioned at the top of base central slot; The both ends of drive roll axle are respectively provided with a drive roll, and drive roll axle is wherein also connected with speed reduction unit and Electric Dynamometer in turn outside an end; The both ends of back-up roller axle are respectively provided with a back-up roller, and the below of back-up roller axle is provided with jacking system; The both ends of follower rollers axle are respectively connected with a follower rollers, and the below of follower rollers is provided with sliding system; Drive roll, back-up roller, follower rollers are all connected with a joggle by tooth with steel wire cog belt.The utility model pick-up unit can simulate the actual road surface that attachment coefficient scope is 0.2-0.8, than single cylinder and twin-roll measuring accuracy higher, Test Cycle is more, compact conformation, easy to use.
Description
Technical field
The utility model belongs to automotive inspection equipment technical field, is specifically related to a kind of three rotary drum pick-up units of simulating the straight road surface of different attachment coefficient.
Background technology
Drum dynamometer, also referred to as chassis dynamometer, is a kind of checkout equipment detecting chassis output and correlation parameter thereof.It is with the surface simulation road surface of rotary drum, applies load with the resistance of simulated automotive when actual travel by charger to rotary drum axle, provides automobile to head on traveling wind, thus realize the simulation of automobile road driving condition in indoor with the air feed system of adjustable wind speed.
Drum dynamometer is divided into single drum dynamometer and double rotating drum testing table according to rotary drum quantity.Single drum dynamometer is in order to the very large rotary drum of simulated roadway employing diameter, and diameter is generally between 1500mm to 2500mm.The manufacture of testing table and erected cost are comparatively large, and install positioning requirements strictly, wheel is more difficult with the centering of rotary drum, and measuring accuracy is higher, is mainly used in automobile manufacturing enterprise and R&D institution.
Double rotating drum testing table roller diameter is less, generally between 185mm to 400mm.Because rotary drum radius-of-curvature is little, tire is different with the pressurized situation on road with the situation that contacts of rotary drum, so test accuracy is lower.
Utility model content
The purpose of this utility model is to provide a kind of three rotary drum pick-up units of simulating the straight road surface of different attachment coefficient, can with the higher ruuning situation of precision analog automobile when advancing in straight road surface, and cost to compare single drum dynamometer cheaper.
The technical scheme that the utility model adopts is: the three rotary drum pick-up units of simulating the straight road surface of different attachment coefficient, comprise base, the middle part of base has groove, base has been arranged side by side successively drive roll axle, back-up roller axle and follower rollers axle, back-up roller axle is positioned at the top of base central slot; The both ends of drive roll axle are respectively provided with a drive roll, and drive roll axle is wherein also connected with speed reduction unit and Electric Dynamometer in turn outside an end; The both ends of back-up roller axle are respectively provided with a back-up roller, and the below of back-up roller axle is provided with jacking system; The both ends of follower rollers axle are respectively provided with a follower rollers, and the below of follower rollers is provided with sliding system; Drive roll, back-up roller, driven rolling all are connected with a joggle by tooth with steel wire cog belt.
Feature of the present utility model is also,
Jacking system comprises lifting table, lifting table is connected by four bearing seats with back-up roller axle, two sides of lifting table are connected by dovetail chute with the surface of base central slot, the lifting hydraulic cylinder that lifting table is moved up and down is provided with between lifting table and base, lifting hydraulic cylinder is provided with two, and two lifting hydraulic cylinders lay respectively at immediately below two back-up rollers.
Lifting table is also provided with displacement transducer.
Sliding system comprises slide unit, it is affixed that slide unit and follower rollers pass through four bearing seats, the bottom surface of slide unit is connected by dovetail chute with the upper surface of base, the push-and-pull hydraulic cylinder that slide unit is moved up and down is connected with between slide unit and base, push-and-pull hydraulic cylinder is provided with two, and two push-and-pull hydraulic cylinders lay respectively at immediately below two follower rollers.
Base is connected by four bearing seats with drive roll axle.
The housing of speed reduction unit is also provided with pressure transducer.
Follower rollers axle is also provided with force snesor.
Steel wire cog belt comprises inside and outside two-layer, and internal layer is the articulamentum made containing the polyurethane of steel wire, and the profile of tooth of the outside surface of the profile of tooth of internal layer inside surface and drive roll, back-up roller, follower rollers matches; The outer supercrust for being made up of compound substance, the profile of tooth of outer inside surface and the profile of tooth of inner layer outer surface match, and outer outside surface is the rough surface identical with actual coefficient of road adhesion.
The beneficial effects of the utility model are: utilize three cylinders and steel wire cog belt to realize the simulation on different attachment coefficient road surface, include the simulation on sinkage road surface; Three cylinders comprise drive roll, back-up roller and follower rollers, and the motion of drive roll is driven by motor, and the position adjustment of back-up roller and follower rollers is by HYDRAULIC CONTROL SYSTEM; Steel wire cog belt comprises inside and outside two-layer, and internal layer is articulamentum, and be made up of the polyurethane of the inside containing steel wire, internal layer inside surface is that large profile of tooth and three outer surface of cylinder profiles of tooth match, and inner layer outer surface is little profile of tooth.Skin is supercrust, is made up of compound substance, and outer inside surface is that little profile of tooth and inner layer outer surface match.Outside surface be can change cover the identical rough surface of the actual coefficients of road adhesion such as road surface with dry bituminous pavement, wet bituminous pavement, muddy covering road surface with thin snow deposit, factor of adhesion scope can be provided to be 0.2-0.8; Than single cylinder and twin-roll measuring accuracy higher, Test Cycle is more, compact conformation, easy to use.
Accompanying drawing explanation
Fig. 1 is the vertical view of the utility model three rotary drum pick-up unit;
Fig. 2 is the front view of the utility model three rotary drum pick-up unit;
Fig. 3 is A-A ＇ direction view in Fig. 2;
Fig. 4 is the front view of the utility model three rotary drum pick-up unit using state;
Fig. 5 is A-A ＇ direction using state view in Fig. 2.
In figure, 1. base, 2. drive roll axle, 3. speed reduction unit, 4. Electric Dynamometer, 5. bearing seat, 6. drive roll, 7. back-up roller, 8. follower rollers, 9. pressure transducer, 10. steel wire cog belt, 11. back-up roller axles, 12. lifting tables, 13. displacement transducers, 14. lifting hydraulic cylinders, 15. push-and-pull hydraulic cylinders, 16. slide units, 17. follower rollers axles, 18. force snesor, 19. driving wheels.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail.
The utility model provides a kind of three rotary drum pick-up units of simulating the straight road surface of different attachment coefficient, vertical view as shown in Figure 1, front view as shown in Figure 2, comprise base 1, the middle part of base 1 has groove, base 1 has been arranged side by side successively drive roll axle 2, back-up roller axle 11 and follower rollers axle 17, back-up roller axle 11 is positioned at the top of base 1 central slot.
Wherein, drive roll axle 2 is power input part, drive roll axle 2 is supported on base 1 by four bearing seats 5, the both ends of drive roll axle 2 are respectively connected with a drive roll 6 by spline, drive roll 6 and steel wire cog belt 10 are engaged by tooth and connect, for the input and output coordinating steel wire cog belt 10 to complete power.Drive roll axle 2 is wherein also connected with speed reduction unit 3 and Electric Dynamometer 4 in turn outside an end, speed reduction unit 3 is for regulating the rotating speed of Electric Dynamometer 4, meet the rotating speed of test demand, the housing of speed reduction unit 3 is also connected with pressure transducer, can be used for measuring the change in torque situation in process of the test.The rotor of Electric Dynamometer 4 and drive roll axle 2 are connected by shaft coupling and speed reduction unit 3, can survey the output power of cylinder, can survey again the driving power of cylinder.When measuring cylinder output power, cylinder mechanical energy, as load, is become electric energy by Electric Dynamometer 4, can show watt level.When measuring cylinder power input, require according to operating condition of test the power input that needs are provided.Utilize running resistance and the inertial force of electronically controlled Electric Dynamometer 4 energy simulated automotive simultaneously, expand the purposes of drum dynamometer.
Wherein, in Fig. 2, A-A ＇ direction view as shown in Figure 3, and the both ends of back-up roller axle 11 are respectively connected with a back-up roller 7 by spline, when supporting, back-up roller 7 and steel wire cog belt 10 are engaged by tooth and connect, for the input and output coordinating steel wire cog belt 10 to complete power.The below of back-up roller axle 11 is connected with lifting table 12, two sides of lifting table 12 are connected by dovetail chute with the surface of base 1 central slot, lifting hydraulic cylinder 14 is provided with between lifting table 12 and base 1, under the effect of lifting hydraulic cylinder 14, lifting table 12 can move up and down by the dovetail chute on two surfaces in the middle part of base 1, drives back-up roller 7 to rise or decline simultaneously.Lifting hydraulic cylinder 14 is provided with two, and two lifting hydraulic cylinders 14 lay respectively at immediately below two back-up rollers 7.Lifting table 12 is also connected with displacement transducer 13, for the height that measuring steel wire cog belt 10 upper surface rises.
Wherein, the both ends of follower rollers axle 17 are respectively connected with a follower rollers 8 by spline, follower rollers 8 and steel wire cog belt 10 are engaged by tooth and connect, the below of follower rollers 8 is connected with slide unit 16, follower rollers axle 17 is supported on slide unit 16 by four bearing seats 5, the bottom surface of slide unit 16 is connected by dovetail chute with the upper surface of base 1, push-and-pull hydraulic cylinder 15 is connected with between slide unit 16 and base 1, push-and-pull hydraulic cylinder 15 is provided with two, two push-and-pull hydraulic cylinders 15 lay respectively at immediately below two follower rollers 8, under the effect of hydraulic system, push-and-pull hydraulic cylinder 15 can make slide unit 16 move horizontally together with follower rollers 8 fixed thereon, the centre distance between follower rollers axle 17 and drive roll axle 2 can be changed, follower rollers axle 17 is also connected with force snesor 18, for surveying the tensile force on steel wire cog belt 10.
When the utility model uses, as shown in Figure 4,5, base 1 is fixed on the ground by foot bolt, then will the automobile of two driving wheels 19 be had to be placed on the utility model pick-up unit, two driving wheels 19 are wherein made to be in directly over two back-up rollers 7, and keep in touch in steel wire cog belt 10, if four driving wheels 19, then need two pick-up units of the present utility model jointly to complete detection.
Principle of work of the present utility model: the test of the three rotary drum pick-up units of simulating the straight road surface of different attachment coefficient conveniently automobile driving wheel 19, generally base 1 is fixed on below ground, height after fixing is advisable a little more than ground with steel wire cog belt 10 upper surface, the height of other support wheels can be adjusted by backing plate, the driving wheel 19 of automobile and other support wheel can be made like this to remain on horizontal level, make test findings more accurate.
Before carrying out the test such as vehicle dynamic quality and braking, by hydraulic system adjustment lifting hydraulic cylinder 14 and push-and-pull hydraulic cylinder 15, back-up roller axle 11 is declined, back-up roller 7 peak is lower than peak about the 15mm of other two cylinders, push-and-pull hydraulic cylinder 15 pulls slide unit 16 to move to middle part, tensile force now on steel wire cog belt 10 is eliminated, measured by tensile force sensor 18, (skin of steel wire cog belt 10 can be and dry bituminous pavement the skin of removal steel wire cog belt 10, wet bituminous pavement, muddy covering road surface covers the identical rough surface of the actual coefficients of road adhesion such as road surface with thin snow deposit).According to will the ground duty requirements tested be carried out, choose the skin of the steel wire cog belt 10 of corresponding attachment coefficient, the skin selected will be coupled on the inner layer outer surface of steel wire cog belt 10.Then, adjustment lifting hydraulic cylinder 14 and push-and-pull hydraulic cylinder 15 make to obtain specifying test height, and height size is measured by height displacement sensor 13, and now, tensile force is within the scope of 0-5N, and tensile force size is measured by tensile force sensor 18.Then automobile is started, automobile driving wheel 19 is reached steel wire cog belt 10 by the auxiliary steel plate ridden on steel wire cog belt 10, longitudinally adjustment makes automobile driving wheel 19 align up and down with the center of back-up roller 7, then use engaged wheel to fix or wire rope is fixing carries out longitudinal restraint to automobile, also can carry out lateral confinement as required.Adjust push-and-pull hydraulic cylinder 15 again, promote slide unit 16 outwards to move, increase tensile force, make tensile force be not less than 50N-100N scope, such object makes steel wire cog belt 10 upper surface to contact close to the tire tread of straight state with driving wheel 19, simulates straight road surface accurately.After test preliminary work completes, just can carry out the associated vehicle performance tests such as vehicle dynamic quality, fuel economy or automobile braking performance by Electric Dynamometer 4 and vehicle complete vehicle.
What illustrate is that the three rotary drum pick-up units of simulating the straight road surface of different attachment coefficient can also simulate the road surface that sandy soil etc. have sinkage, when simulating sandy soil etc. and having the road surface of sinkage, adjustment lifting hydraulic cylinder 14 declines, push-and-pull hydraulic cylinder 15 moves in the middle part of unit, according to the size of simulated roadway sinkage, steel wire cog belt 10 upper surface is made to drop to appointment test height representated by sinkage, height size is measured by height displacement sensor 13, then check and adjust driving wheel 19 and align up and down with the center of back-up roller 7, equally longitudinal restraint is carried out to automobile, also lateral confinement can be carried out as required, adjustment tensile force is being not less than 50N-100N scope, now can simulate and carry out vehicle dynamic quality on the road surface having sinkage, the associated vehicle such as fuel economy or automobile braking performance performance test.
After the test on the attachment coefficient selected by this representated by steel wire cog belt 10 is straight road surface completes.If no longer carry out other tests, Electric Dynamometer 4 or closing automobile engine can be stopped, adjust push-and-pull hydraulic cylinder 15 again, slide unit 16 is pulled to move to middle part, reduce tensile force, make tensile force be 0N, remove the vertical and horizontal constraint of automobile, again by the auxiliary steel plate ridden on steel wire cog belt 10, the driving wheel 19 of automobile is driven off from steel wire cog belt 10.If need the road surface changing other attachment coefficients, the skin of steel wire cog belt 10 is only needed to change, other do not change, and then carry out the associated vehicle performance tests such as vehicle dynamic quality, fuel economy or automobile braking performance according to same method above.
Claims (8)
1. simulate the three rotary drum pick-up units on the straight road surface of different attachment coefficient, it is characterized in that, comprise base (1), the middle part of base (1) has groove, base (1) has been arranged side by side successively drive roll axle (2), back-up roller axle (11) and follower rollers axle (17), back-up roller axle (11) is positioned at the top of base (1) central slot; The both ends of described drive roll axle (2) are respectively provided with a drive roll (6), and drive roll axle (2) is wherein also connected with speed reduction unit (3) and Electric Dynamometer (4) in turn outside an end; The both ends of described back-up roller axle (11) are respectively provided with a back-up roller (7), and the below of back-up roller axle (11) is provided with jacking system; The both ends of described follower rollers axle (17) are respectively connected with a follower rollers (8), and the below of follower rollers (8) is provided with sliding system; Described drive roll (6), back-up roller (7), follower rollers (8) are all connected with a joggle by tooth with steel wire cog belt (10).
2. the three rotary drum pick-up units on the straight road surface of the different attachment coefficient of simulation according to claim 1, it is characterized in that, described jacking system comprises lifting table (12), lifting table (12) is connected by four bearing seats (5) with described back-up roller axle (11), two sides of lifting table (12) are connected by dovetail chute with the surface of base (1) central slot, the lifting hydraulic cylinder (14) that lifting table (12) is moved up and down is provided with between lifting table (12) and base (1), lifting hydraulic cylinder (14) is provided with two, two lifting hydraulic cylinders (14) lay respectively at immediately below two back-up rollers (7).
3. the three rotary drum pick-up units on the straight road surface of the different attachment coefficient of simulation according to claim 2, is characterized in that, described lifting table (12) are also provided with displacement transducer (13).
4. the three rotary drum pick-up units on the straight road surface of the different attachment coefficient of simulation according to claim 1, it is characterized in that, described sliding system comprises slide unit (16), slide unit (16) is affixed by four bearing seats (5) with described follower rollers (8), the bottom surface of slide unit (16) is connected by dovetail chute with the upper surface of base (1), the push-and-pull hydraulic cylinder (15) that slide unit (16) is moved up and down is connected with between slide unit (16) and base (1), push-and-pull hydraulic cylinder (15) is provided with two, two push-and-pull hydraulic cylinders (15) lay respectively at immediately below two follower rollers (8).
5. the three rotary drum pick-up units on the straight road surface of the different attachment coefficient of simulation according to claim 1, is characterized in that, described base (1) is connected by four bearing seats (5) with described drive roll axle (2).
6. the three rotary drum pick-up units on the straight road surface of the different attachment coefficient of simulation according to claim 1, is characterized in that, the housing of described speed reduction unit (3) are also provided with pressure transducer (9).
7. the three rotary drum pick-up units on the straight road surface of the different attachment coefficient of simulation according to claim 1, is characterized in that, described follower rollers axle (17) is also provided with force snesor (18).
8. the three rotary drum pick-up units on the different straight road surface of attachment coefficient of the simulation according to claim 1-7 any one, it is characterized in that, described steel wire cog belt (10) comprises inside and outside two-layer, internal layer is the articulamentum made containing the polyurethane of steel wire, and the profile of tooth of the outside surface of the profile of tooth of internal layer inside surface and drive roll (6), back-up roller (7), follower rollers (8) matches; The outer supercrust for being made up of compound substance, the profile of tooth of outer inside surface and the profile of tooth of inner layer outer surface match, and outer outside surface is the rough surface identical with actual coefficient of road adhesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278075.6U CN204556273U (en) | 2015-04-30 | 2015-04-30 | Simulate the three rotary drum pick-up units on the straight road surface of different attachment coefficient |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520278075.6U CN204556273U (en) | 2015-04-30 | 2015-04-30 | Simulate the three rotary drum pick-up units on the straight road surface of different attachment coefficient |
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| CN204556273U true CN204556273U (en) | 2015-08-12 |
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| CN201520278075.6U Expired - Fee Related CN204556273U (en) | 2015-04-30 | 2015-04-30 | Simulate the three rotary drum pick-up units on the straight road surface of different attachment coefficient |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792548A (en) * | 2015-04-30 | 2015-07-22 | 陕西理工学院 | Three-drum detection device used for simulating straight pavements with different attachment coefficients |
| CN109470488A (en) * | 2018-09-29 | 2019-03-15 | 陕西理工大学 | A kind of simulator and Road quality simulation method on multi-state road surface |
| CN109470489A (en) * | 2018-09-29 | 2019-03-15 | 陕西理工大学 | A kind of the electrodynamic analogy device and Road quality simulation method on multi-state road surface |
| CN110487462A (en) * | 2019-08-20 | 2019-11-22 | 武汉市云竹机电新技术开发有限公司 | Steel band brake force caliberating device and method |
-
2015
- 2015-04-30 CN CN201520278075.6U patent/CN204556273U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792548A (en) * | 2015-04-30 | 2015-07-22 | 陕西理工学院 | Three-drum detection device used for simulating straight pavements with different attachment coefficients |
| CN104792548B (en) * | 2015-04-30 | 2017-12-29 | 陕西理工学院 | A kind of three rotary drum detection means for being used to simulate the different straight road surfaces of attachment coefficient |
| CN109470488A (en) * | 2018-09-29 | 2019-03-15 | 陕西理工大学 | A kind of simulator and Road quality simulation method on multi-state road surface |
| CN109470489A (en) * | 2018-09-29 | 2019-03-15 | 陕西理工大学 | A kind of the electrodynamic analogy device and Road quality simulation method on multi-state road surface |
| CN109470488B (en) * | 2018-09-29 | 2020-10-16 | 陕西理工大学 | Multi-condition road surface simulation device and road condition simulation method |
| CN110487462A (en) * | 2019-08-20 | 2019-11-22 | 武汉市云竹机电新技术开发有限公司 | Steel band brake force caliberating device and method |
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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: 20150812 Termination date: 20160430 |