CN112964477A - Dynamometer for motor vehicle - Google Patents
Dynamometer for motor vehicle Download PDFInfo
- Publication number
- CN112964477A CN112964477A CN202110161603.XA CN202110161603A CN112964477A CN 112964477 A CN112964477 A CN 112964477A CN 202110161603 A CN202110161603 A CN 202110161603A CN 112964477 A CN112964477 A CN 112964477A
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- China
- Prior art keywords
- dynamometer
- roller
- rollers
- crawler belt
- wheels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
- G01M17/0074—Details, e.g. roller construction, vehicle restraining devices
Abstract
The invention discloses a motor vehicle dynamometer, which relates to the technical field of motor vehicle detection and comprises the following components: the motor vehicle dynamometer provided by the invention is suitable for four-wheel drive motor vehicles with different wheel bases and simplifies the vehicle inspection process.
Description
Technical Field
The invention relates to the technical field of motor vehicle detection, in particular to a motor vehicle dynamometer.
Background
In order to reduce the pollution of the tail gas of the motor vehicle to the environment, improve the air quality of the environment, and make pollution prevention, attack and hardness battle, each ministry of China commissions a series of regulations, plans and technical policies, and puts forward higher requirements on the emission control of the motor vehicle. On 28 th 10 th 2019, the customs service issues an ad 168 of 2019, an announcement about further standardization of inspection of environmental protection projects for imported motor vehicles. The bulletin stipulates that the imported motor vehicles need to be subjected to appearance inspection, vehicle-mounted diagnosis system inspection and exhaust pollutant detection according to GB 18285-2018 and GB 3847-2018, and the gasoline vehicles are required to be subjected to emission detection by a simple transient working condition method and the diesel vehicles are required to be subjected to a loading deceleration method; at present, a chassis dynamometer of an emission detection mechanism mostly adopts a two-shaft four-roller mode to carry out emission detection of a two-drive working condition method, although a four-drive motor vehicle detection table also exists, one detection table only can detect motor vehicles with the same shaft distance, and more customers purchasing the four-drive motor vehicles at present have diversified shaft distances, so that the invention provides the detection table suitable for the emission test of the four-drive motor vehicles with different shaft distances, which is a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a motor vehicle dynamometer, which aims to solve the problems in the prior art, is suitable for four-wheel drive motor vehicles with different wheelbases and simplifies the vehicle inspection process.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a motor vehicle dynamometer, comprising: the four-wheel drive motor vehicle comprises a roller dynamometer and a track dynamometer which are sequentially arranged, wherein a single station for placing front wheels or rear wheels of the four-wheel drive motor vehicle is arranged on the roller dynamometer, a continuous station for placing the rear wheels or the front wheels of the four-wheel drive motor vehicle is arranged on the track dynamometer, and the roller dynamometer is at least provided with two rollers.
Preferably, the roller dynamometer comprises two symmetrically arranged roller groups, each roller group comprises two rollers, each roller is rotatably connected to a roller frame, the two rollers in each roller group are parallel and oppositely arranged to form a single station, and the two single stations are respectively used for placing two front wheels or two rear wheels of a four-wheel drive motor vehicle; two rollers in one group of roller group are respectively connected with two rollers in the other group of roller group through two first couplers, and the axes of the two rollers connected on the same first coupler are collinear.
Preferably, two rollers in each roller group are synchronously connected through a transmission device in a transmission manner;
the roller dynamometer further comprises a tensioning device used for adjusting the tensioning force of the transmission device, and the tensioning device is fixedly arranged on the roller rack.
Preferably, the crawler dynamometer comprises two crawler groups which are symmetrically arranged; the crawler belt group comprises an annular crawler belt and two chain wheels for supporting the crawler belt to move, the two chain wheels in one crawler belt group are respectively connected to the two chain wheels in the other crawler belt group through two second couplers, the axes of the two chain wheels connected to the same second coupler are collinear, the crawler belt can move freely, and the two continuous stations are formed on the upper surfaces of the two crawler belts.
Preferably, the track includes track body and two chains, the track body is the annular, two the chain set up in on the inner wall at track body both ends, the chain also is the annular, each the outer wall of chain all fixed set up in on the inner wall of track body, the chain with sprocket meshing and can carry out the transmission.
Preferably, the crawler belt group further comprises a supporting platform, the supporting platform is fixedly arranged on the crawler belt frame, and a supporting surface of the supporting platform is located right below the continuity station.
Preferably, each track group comprises a plurality of track blocking discs, and two ends of each chain wheel are fixedly provided with one track blocking disc.
Preferably, each roller group further comprises a lifting device and two locking discs, the lifting device is arranged between the two rollers, the two locking discs are arranged on two sides of the lifting device and are respectively located under the two rollers, a driving device in the lifting device drives the locking discs to ascend and descend, and the locking discs can be tightly pressed on the rollers and lock the rollers.
Preferably, the device also comprises two anti-dragging motors and two loading devices, wherein the two loading devices are respectively in transmission connection with the roller dynamometer and the crawler dynamometer, and the two anti-dragging motors are also respectively in transmission connection with the roller dynamometer and the crawler dynamometer.
Preferably, the automobile chassis further comprises two blocking wheels, a plurality of mounting holes are formed in the roller frame along the length direction of the rollers, the two blocking wheels can be detachably and fixedly arranged in the mounting holes, the two blocking wheels are respectively positioned above the two corresponding rollers in the two roller groups, and the two blocking wheels are used for limiting the automobile to move along the axial direction of the rollers.
Compared with the prior art, the invention has the following technical effects:
the invention provides a motor vehicle dynamometer, wherein a single station on a roller dynamometer is used for placing one group of wheels (namely front wheels or rear wheels) of a four-wheel drive motor vehicle, and the other group of wheels of the motor vehicle can be placed at any position on a continuity station on a crawler dynamometer, so that the dynamometer provided by the invention is suitable for four-wheel drive motor vehicles with different wheelbases; in addition, the roller dynamometer is a double-roller dynamometer, and a single station on the roller dynamometer has the effect of positioning wheels, so that when the device is used for detecting vehicles, the process of positioning the motor vehicles is not required to be additionally added, and the vehicle detection process is simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a motor vehicle dynamometer provided by the invention;
FIG. 2 is a schematic structural diagram of a roller dynamometer in a motor vehicle dynamometer provided by the present invention;
FIG. 3 is a schematic structural diagram of a track dynamometer in a motor vehicle dynamometer provided by the invention;
FIG. 4 is a schematic structural diagram of a track dynamometer in a motor vehicle dynamometer, which is not provided with a track blocking disc;
FIG. 5 is a right side view of FIG. 2;
FIG. 6 is a cross-sectional view of FIG. 2;
FIG. 7 is a half-sectional view of FIG. 3;
in the figure: the automatic hydraulic automatic track test system comprises a roller dynamometer 1, a track dynamometer 2, a single station 3, a continuous station 4, a roller 5, a tensioning device 6, a transmission device 7, a loading device 8, a reverse dragging motor 9, a first coupling 10, a roller frame 11, a track frame 12, a supporting platform 13, a chain wheel 14, a track body 15, a chain 16, a blocking wheel 17, a locking disc 18, a return spring 19, a lifting air bag 20, a lifting device body 21, a lifting device 22, a second coupling 23, a track blocking disc 24, a motor vehicle dynamometer 100, a roller group 200, a track 300 and a track group 400.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a motor vehicle dynamometer, which aims to solve the problems in the prior art, is suitable for four-wheel drive motor vehicles with different wheelbases and simplifies the vehicle inspection process.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a motor vehicle dynamometer 100, as shown in fig. 1 to 7, including: the four-wheel drive motor vehicle comprises a roller dynamometer 1 and a track dynamometer 2 which are sequentially arranged, wherein a single station 3 for placing front wheels or rear wheels of a four-wheel drive motor vehicle is arranged on the roller dynamometer 1, a continuous station 4 for placing rear wheels or front wheels of the four-wheel drive motor vehicle is arranged on the track dynamometer 2, and the roller dynamometer 1 is a double-roller dynamometer;
the single station 3 on the roller dynamometer 1 is used for placing one group of wheels (namely front wheels or rear wheels) of the four-wheel drive motor vehicle, and the other group of wheels of the motor vehicle can be placed at any position on the continuity station 4 on the crawler dynamometer 2, so that the dynamometer provided by the invention is suitable for the four-wheel drive motor vehicles with different wheelbases; in addition, the roller dynamometer 1 is a double-roller dynamometer, and the single station 3 on the double-roller dynamometer has the effect of positioning wheels, so that when the device is used for detecting vehicles, the process of additionally positioning motor vehicles is not required to be added, and the vehicle detection process is simplified.
Further, the roller dynamometer 1 comprises two groups of roller groups 200 which are symmetrically arranged, each roller group 200 comprises two rollers 5, each roller 5 is rotatably connected to the roller frame 11, the two rollers 5 in each roller group 200 are parallel and oppositely arranged to form a single station 3, and the two single stations 3 are respectively used for placing two front wheels or two rear wheels of the four-wheel drive motor vehicle; the two rollers 5 in one roller group 200 are respectively connected with the two rollers 5 in the other roller group 200 through two first couplings 10, and the axes of the two rollers 5 connected on the same first coupling 10 are collinear; the two rollers 5 in each roller group 200 are synchronously connected through a transmission device 7 in a transmission way, the transmission device 7 comprises a belt and two belt pulleys, the two belt pulleys are respectively coaxial and fixedly connected to the same side of the two rollers 5 in the same roller group 200, and the two belt pulleys are connected through the belt; the four rollers 5 are connected through the transmission device 7 and the first coupler 10, so that the four rollers 5 can synchronously rotate after being driven by friction force of tires, the stability of the roller dynamometer 1 is improved, the roller dynamometer 1 further comprises a tensioning device 6 used for adjusting the tensioning force of the transmission device 7, the tensioning device 6 is fixedly arranged on a roller frame 11, and the tensioning device 6 is arranged to prevent the phenomenon that the belt slips due to the fact that the tensioning force of the belt is too small.
Further, the crawler dynamometer 2 includes two crawler groups 400 symmetrically arranged; the crawler belt group 400 comprises an annular crawler belt 300 and two chain wheels 14 for supporting the crawler belt 300 to move, the chain wheels 14 are rotatably connected to the crawler belt frame 12, the two chain wheels 14 in one crawler belt group 400 are respectively connected to the two chain wheels 14 in the other crawler belt group 400 through two second couplers 23, the axes of the two chain wheels 14 connected to the same second coupler 23 are collinear, the crawler belt 300 can move freely, two continuity stations 4 are formed on the upper surfaces of the two crawler belts 300, the surface of the crawler belt 300 is roughened to increase the friction coefficient between the wheels and the crawler belt 300, when the wheels of the motor vehicle rotate on the crawler belt 300, the position of the motor vehicle is fixed, and the crawler belt 300 rotates under the action of the friction force of the wheels; the length of the crawler 300 is set according to actual conditions, and the longer the crawler 300, the larger the range of the wheel base that can be accommodated.
Further, track 300 includes track body 15 and two chains 16, track body 15 is the annular, two chains 16 set up on the inner wall at track body 15 both ends, chain 16 also is the annular, the outer wall of each chain 16 is all fixed to be set up on track body 15's inner wall, two chains 16 mesh with sprocket 14 and can transmit, chain 16's outer wall is provided with the joint piece, be provided with the joint groove on track body 15, joint piece and joint groove phase-match, the joint piece can the joint be fixed in the joint inslot in order to realize being connected between chain 16 and the track body 15.
Further, the crawler belt assembly 400 further includes a supporting platform 13, the supporting platform 13 is fixedly disposed on the crawler belt frame 12, a supporting surface of the supporting platform 13 is located right below the continuity station 4, the supporting platform 13 is used for supporting the crawler belt 300 to prevent the crawler belt 300 from being excessively compressed and collapsed, a gap is formed between the supporting platform 13 and the crawler belt 300, two ends of the supporting platform 13 along the axial direction of the chain wheel 14 protrude out of two ends of the crawler belt 300, and the supporting platforms 13 protruding out of two ends of the crawler belt 300 are fixed on the crawler belt frame 12 through bolts.
Further, the crawler frame 12 and the roller frame 11 are respectively and fixedly arranged in two foundation pits which are sequentially arranged.
Further, each track set 400 includes a plurality of track plates 24, and each sprocket 14 has a track plate 24 fixed to both ends thereof to prevent the track 300 from slipping during operation.
Further, each roller set 200 further comprises a lifting device 22 and two locking discs 18, the lifting device 22 is arranged between the two rollers 5, the two locking discs 18 are arranged on two sides of the lifting device 22 and located under the two rollers 5 respectively, the lifting device 22 comprises a lifting device body 21 and a lifting airbag 20, the lifting airbag 20 is used for driving the lifting device body 21 to move up and down to complete a lifting process, the locking discs 18 are fixedly arranged at lifting ends of the lifting airbag 20, therefore, the lifting airbag 20 can also drive the locking discs 18 to ascend and descend, and the locking discs 18 can be tightly pressed on the rollers 5 and lock the rollers 5.
Before the device is used for detecting the motor vehicle, firstly, the lifting device 22 positioned between the two rollers 5 needs to be lifted to be positioned on the same horizontal plane with the highest point of the rollers 5, meanwhile, the locking disc 18 is lifted to the lower surface of the rollers 5 and tightly abutted against the lower surface of the rollers 5, the rollers 5 are locked, then, front wheels and rear wheels of the vehicle respectively run to the lifting device 22 and the crawler 300, the vehicle stops, the lifting devices 22 simultaneously descend, the locking disc 18 also descends along with the lifting devices 22, the rollers 5 are unlocked, wheels positioned above the rollers 5 descend onto the rollers 5, the wheels positioned on the crawler 300 are always positioned on the crawler 300, and then, the detection is carried out according to the emission detection requirement;
the lifting device 22 selected by the invention is provided with a return spring 19 so as to be convenient for quick return after the lifting is finished.
Further, the device comprises two back-dragging motors 9 and two loading devices 8, wherein the two loading devices 8 are respectively in transmission connection with the roller dynamometer 1 and the crawler dynamometer 2, the two back-dragging motors 9 are also respectively in transmission connection with the roller dynamometer 1 and the crawler dynamometer 2, so that a back-dragging test system can conveniently perform back-dragging test on the motor vehicle, and the back-dragging test system can be used for testing the power consumed by the rotation of the automobile transmission system and the wheels on the rolling wheel 5, thereby accurately measuring the output power of the engine and truly evaluating the dynamic property of the automobile; the loading device 8 is used for simulating various resistances of the automobile when the automobile runs on a road, and the loading device 8 can adopt a hydraulic, electric or mechanical dynamometer; the loading device 8 of the invention adopts an electric eddy current dynamometer, and a force measuring sensor is arranged on the loading device 8 and is used for measuring a force signal transmitted by the surface of the roller 5, and the force signal is transmitted to the control unit after being processed.
Further, at least one roller 5 on the roller dynamometer 1 is provided with a rotating speed sensor for measuring the vehicle speed, and similarly, at least one chain wheel 14 on the crawler dynamometer 2 is provided with a rotating speed sensor for measuring the vehicle speed.
Further, still include two fender wheels 17, be provided with a plurality of mounting holes along the length direction of cylinder 5 on the cylinder frame 11, two fender wheels 17 all can be dismantled fixedly and set up in the mounting hole, two fender wheels 17 are located the top of two corresponding cylinders 5 in two cylinder groups 200 respectively, two fender wheels 17 are used for restricting the motor vehicle and move along the axis direction of cylinder, two fender wheels 17 are located the both sides of motor vehicle wheel respectively.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A motor vehicle dynamometer, characterized by: the method comprises the following steps: the four-wheel drive motor vehicle comprises a roller dynamometer and a track dynamometer which are sequentially arranged, wherein a single station for placing front wheels or rear wheels of the four-wheel drive motor vehicle is arranged on the roller dynamometer, a continuous station for placing the rear wheels or the front wheels of the four-wheel drive motor vehicle is arranged on the track dynamometer, and the roller dynamometer is at least provided with two rollers.
2. The automotive dynamometer machine of claim 1, wherein: the roller dynamometer comprises two groups of symmetrically arranged rollers, each roller group comprises two rollers, each roller is rotatably connected to a roller frame, the two rollers in each roller group are parallel and oppositely arranged to form a single station, and the two single stations are respectively used for placing two front wheels or two rear wheels of a four-wheel drive motor vehicle; two rollers in one group of roller group are respectively connected with two rollers in the other group of roller group through two first couplers, and the axes of the two rollers connected on the same first coupler are collinear.
3. The automotive dynamometer machine of claim 2, wherein: two rollers in each roller group are synchronously connected through a transmission device in a transmission way;
the roller dynamometer further comprises a tensioning device used for adjusting the tensioning force of the transmission device, and the tensioning device is fixedly arranged on the roller rack.
4. The automotive dynamometer machine of claim 1, wherein: the crawler dynamometer comprises two crawler groups which are symmetrically arranged; the crawler belt group comprises an annular crawler belt and two chain wheels for supporting the crawler belt to move, the two chain wheels in one crawler belt group are respectively connected to the two chain wheels in the other crawler belt group through two second couplers, the axes of the two chain wheels connected to the same second coupler are collinear, the crawler belt can move freely, and the two continuous stations are formed on the upper surfaces of the two crawler belts.
5. The automotive dynamometer machine of claim 4, wherein: the crawler belt comprises a crawler belt body and two chains, wherein the crawler belt body is annular, the two chains are arranged on the inner walls of two ends of the crawler belt body, the chains are also annular, the outer walls of the chains are fixedly arranged on the inner walls of the crawler belt body, and the chains are meshed with the chain wheels and can be driven.
6. The automotive dynamometer machine of claim 4, wherein: the crawler belt group further comprises a supporting platform, the supporting platform is fixedly arranged on the crawler belt frame, and a supporting surface of the supporting platform is located right below the continuity station.
7. The automotive dynamometer machine of claim 4, wherein: each group of the crawler belt groups comprises a plurality of crawler belt blocking discs, and two ends of each chain wheel are fixedly provided with one crawler belt blocking disc.
8. The automotive dynamometer machine of claim 2, wherein: each roller group also comprises a lifting device and two locking discs, the lifting device is arranged between the two rollers, the two locking discs are arranged on two sides of the lifting device and are respectively positioned under the two rollers, a driving device in the lifting device drives the locking discs to ascend and descend, and the locking discs can be tightly pressed on the rollers and lock the rollers.
9. The automotive dynamometer machine of claim 1, wherein: the device is characterized by further comprising two anti-dragging motors and two loading devices, wherein the two loading devices are respectively in transmission connection with the roller dynamometer and the crawler dynamometer, and the two anti-dragging motors are also respectively in transmission connection with the roller dynamometer and the crawler dynamometer.
10. The automotive dynamometer machine of claim 2, wherein: the automobile front-end collision prevention device is characterized by further comprising two blocking wheels, a plurality of mounting holes are formed in the roller frame along the length direction of the rollers, the two blocking wheels can be detachably and fixedly arranged in the mounting holes, the two blocking wheels are respectively located above the two corresponding rollers in the two roller groups, and the two blocking wheels are used for limiting the automobile to move along the axis direction of the rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110161603.XA CN112964477A (en) | 2021-02-05 | 2021-02-05 | Dynamometer for motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110161603.XA CN112964477A (en) | 2021-02-05 | 2021-02-05 | Dynamometer for motor vehicle |
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| CN112964477A true CN112964477A (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110161603.XA Pending CN112964477A (en) | 2021-02-05 | 2021-02-05 | Dynamometer for motor vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509201A (en) * | 2022-02-17 | 2022-05-17 | 山东交通学院 | Road resistance simulation effect analysis method for vehicle bench test detection |
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2021
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