CN115077943A - Testing device and testing method for central electric power-assisted bicycle - Google Patents
Testing device and testing method for central electric power-assisted bicycle Download PDFInfo
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- CN115077943A CN115077943A CN202210791938.4A CN202210791938A CN115077943A CN 115077943 A CN115077943 A CN 115077943A CN 202210791938 A CN202210791938 A CN 202210791938A CN 115077943 A CN115077943 A CN 115077943A
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 239000006247 magnetic powder Substances 0.000 claims abstract description 23
- 230000001360 synchronised effect Effects 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims 4
- 230000037396 body weight Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 229910052799 carbon Inorganic materials 0.000 description 1
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
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Abstract
The invention discloses a testing device and a testing method for a central electric power-assisted bicycle, which comprises a device frame, a power distribution cabinet, a front wheel lifting table, a driving force simulation device, a magnetic powder dynamometer, a flywheel, a rear wheel roller, a synchronous belt, a front wheel roller and a counterweight device.
Description
Technical Field
The invention relates to the technical field of testing devices of electric power-assisted bicycles, in particular to a testing device and a testing method of a central electric power-assisted bicycle.
Background
In recent years, green low-carbon travel is advocated as a mainstream, and the electric power-assisted bicycle is popular among people all over the world due to the characteristics of being green, convenient and the like. The electric power-assisted bicycle is provided with a torque detection device and an intelligent power-assisted control algorithm, and has great research and mining potential. The electric power-assisted bicycle is a manpower and motor-assisted bicycle, and is mainly different from the traditional electric bicycle in that the electric power-assisted bicycle is not required to be controlled by a throttle to control the power output by a motor to obtain power, and is provided with an intelligent power-assisted control system, the pedaling force of a rider is detected by a torque detection device, and the output power of the motor is controlled by an intelligent control algorithm to output power assistance. The appearance of the bicycle is kept, a rider can commute and achieve the effect of body building, and the bicycle is not like a car at the peak time of going to work and going to work.
The electric power-assisted bicycle mainly comprises a power-assisted driving system, an energy supply module, an instrument, a bicycle body and other parts. The driving system has three arrangement modes of a front-mounted type, a rear-mounted type and a middle-mounted type.
1. The driving system is installed on the front fork of the vehicle body by the front-mounted scheme, the power output axis of the driving system is coincided with the axis of the front wheel rotating shaft, and the original structure of the vehicle body is not required to be modified by the scheme, so that the whole vehicle structure is simple, and the production and assembly are simple and convenient. However, the traction force of the whole vehicle and the traction force of a rider are provided by the front fork, and the driving system is connected with the front wheel rotating shaft, so that the driving system is easy to impact under a bumpy road condition, and the service life is shortened. Meanwhile, the front-mounted scheme has the defects of poor gravity center and poor traction force easily caused by the fact that the gravity center is deviated from the front. On an uphill slope, if the pressure applied to the front wheels is insufficient, a slip phenomenon may result, thereby causing a danger.
2. The rear-mounted scheme is characterized in that the driving system is arranged on a rear wheel middle shaft of the vehicle body, the power output shaft center of the driving system is superposed with the rear wheel rotating shaft center, and the vehicle body structure does not need to be modified like the front-mounted scheme, so that the whole vehicle structure is simpler. The arrangement mode is most common in common electric vehicles, and the rear-mounted arrangement of the hub motor is adopted, so that the whole vehicle is heavy. The gravity center of the whole vehicle is deviated from the back, the problem of insufficient traction force caused by the gravity center of the front-mounted type does not exist, but the rear wheel of the whole vehicle has a chain and more routing wires, so that the whole vehicle is difficult to disassemble and inconvenient to maintain. Meanwhile, the rear wheel can impact a driving system under bumpy road conditions, and parts are easily damaged.
3. The central arrangement scheme integrates a driving system at a central shaft of the whole vehicle, and an output shaft of the driving system is superposed with a pedal central shaft. The scheme is that a motor, a sensor, a control circuit, a reduction gear and the like are integrated into a module and are installed at the position of a middle shaft of the whole vehicle. The installation mode enables the centers of gravity of the human body, the vehicle and the power assisting system to be on the same straight line, and as shown in figure 3, the installation mode accords with human engineering and is a reasonable component layout mode. Meanwhile, the arrangement of the position of the middle shaft reduces the possibility of damage to a driving system caused by vibration, and the structural strength and the shock-absorbing performance are better than those of the front shaft and the rear shaft.
At present, experimental devices for testing the comprehensive performance of the whole electric power-assisted bicycle at home and abroad are fewer, most of the existing experimental devices are mostly performance testing devices for the traditional electric bicycle, and the experimental devices cannot be suitable for the test requirements of the power-assisted bicycle. How to truly simulate the road condition of riding on the spot is the key of the design of the performance experimental device by outputting power-assisted parameters according to the road condition. The current testing device can not quantitatively simulate the stress state of the whole bicycle, such as friction resistance, weight of people and the whole bicycle, wind resistance, riding treading moment and the like, so that the boosting performance of the electric power-assisted bicycle under different resistances can not be quantitatively tested.
Therefore, it is necessary to design a testing device for a central electric bicycle, which reflects the real riding stress of the testing device, and is used for verifying the performance of the power-assisted system of the electric bicycle.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a testing device and a testing method for a central electric power-assisted bicycle, which can truly simulate riding stress conditions and automatically detect and verify the performance of a power-assisted system of the central electric power-assisted bicycle.
In order to achieve the purpose, the invention adopts the technical scheme that: a testing device of a central electric power-assisted bicycle comprises a device frame, a power distribution cabinet, a front wheel lifting platform, a driving force simulation device, a magnetic powder dynamometer, a flywheel, a rear wheel roller, a synchronous belt, a front wheel roller, a state display screen and a counterweight device,
the central electric power-assisted bicycle comprises a bicycle body, a front wheel rotatably arranged on the front side of the bicycle body, a rear wheel rotatably arranged on the rear side of the bicycle body and a central motor fixed in the middle of the bicycle body, wherein the central motor is provided with a central motor shaft;
the front wheel lifting platform is arranged on the first side of the device frame, and is provided with a lifting mechanism for adjusting the height of the front wheel and a front wheel roller for movably abutting against the wheel surface of the front wheel, the front wheel roller is rotatably arranged on the upper part of the lifting mechanism, and the wheel surface of the front wheel roller is provided with a rubber layer;
the driving force simulation device is arranged in the middle of the device frame and is provided with a servo motor and a servo motor XYZ axis adjusting mechanism, the servo motor XYZ axis adjusting mechanism is fixed in the middle of the device frame, the servo motor is fixed in the servo motor XYZ axis adjusting mechanism, a rotating shaft of the servo motor is in transmission connection with a middle-placed motor shaft, and the rotating shaft and the middle-placed motor shaft are coaxially arranged and used for simulating the treading torque of a human;
the magnetic powder dynamometer is arranged on the second side of the device frame, is provided with a load torque applying part and a rear wheel roller which is arranged on the load torque applying part and is used for movably abutting against the wheel surface of the rear wheel, the wheel surface of the rear wheel roller is provided with a rubber layer,
the synchronous belt is connected with the front wheel roller and the rear wheel roller in a transmission way, the flywheel and the rear wheel roller are coaxially arranged, and the rear wheel roller is connected with the flywheel in a transmission way;
the counterweight device is arranged at the upper part of the device frame and is provided with a push rod which is used for propping against the body and is used for simulating the weights of different riders;
the power distribution cabinet is provided with a power supply device and a detection circuit, the power supply device is respectively and electrically connected with a detection electrode, a middle-placed motor, a lifting mechanism, a servo motor XYZ axis adjusting mechanism and a magnetic powder dynamometer, and the detection electrode is respectively and electrically connected with the middle-placed motor, the lifting mechanism, the servo motor XYZ axis adjusting mechanism and the magnetic powder dynamometer and is used for reflecting the real riding stress condition of the middle-placed electric power-assisted bicycle and verifying the performance of a power-assisted system.
In a further technical scheme, the counter weight device is including scurrying formula counter weight mechanism from top to bottom, and the formula of scurrying from top to bottom includes along vertical direction slidable mounting in the device frame the push rod and a plurality of weights that supply the option to use, scurrying on the push rod and being equipped with a plurality of weights.
In a further technical scheme, the counterweight device comprises a cylinder type counterweight mechanism, and the cylinder type counterweight mechanism comprises a cylinder and the push rod arranged on the cylinder.
A testing method of a central electric power-assisted bicycle uses a testing device of the central electric power-assisted bicycle to simulate and reflect the real riding stress condition of the central electric power-assisted bicycle, automatically detects and verifies the performance of a power-assisted system of the central electric power-assisted bicycle through a detection circuit,
the stress analysis of the whole vehicle is carried out on the central electric power-assisted bicycle which is driven on the road, and the main driving force in the riding process comprises the human tread force F man And motor assistance F of middle-arranged motor a The resistance in the riding process comprises wind resistance F in the riding process W Component F of gravity in the direction of the slope G Rolling friction force F between front and rear tires and the ground f ，
The middle-mounted electric power-assisted bicycle is arranged inside a device frame of a testing device of the middle-mounted electric power-assisted bicycle, the wheel surface of a front wheel is abutted against a front wheel roller of a front wheel lifting table, the height and the direction of the front wheel roller are adjusted through the front wheel lifting table and a lifting mechanism, the height of the front wheel is further adjusted, different slope road conditions are simulated,
the shaft of the middle motor is connected with the rotating shaft of the servo motor, the rotating shaft and the shaft of the middle motor are coaxially arranged, so that the additional bending moment interference caused by non-concentricity is avoided, the simulation device is used for simulating the treading torque of a human,
the wheel surface of the rear wheel is abutted against a rear wheel roller of the magnetic powder dynamometer, the rear wheel is loaded with torque through the magnetic powder dynamometer to serve as rear wheel load, and wind resistance F in the riding process of the whole vehicle is simulated W Rolling friction force F between front and rear tires and the ground f ；
The front wheel roller and the rear wheel roller are connected through synchronous belt transmission, so that the front wheel roller and the rear wheel roller are in same-frequency transmission and used for simulating the synchronous transmission of the front wheel and the rear wheel, so that the friction coefficient of real road conditions is simulated, and the wind resistance F in the riding process of the whole bicycle is simulated W And rolling friction force F between front and rear tires and the ground f ，
The push rod of the counterweight device is abutted against the vehicle body, and a thrust force for simulating the weight of a rider is applied to the vehicle body through the push rod of the counterweight device.
Compared with the prior art, the invention has the advantages that: according to the working principle of the central electric power-assisted bicycle, the riding stress condition is truly simulated, and the performance of the power-assisted system of the central electric power-assisted bicycle is automatically detected and verified through the detection circuit.
Drawings
Fig. 1 is a stress analysis diagram of the whole vehicle of the central electric power-assisted bicycle.
Fig. 2 is a schematic structural diagram of a testing device of a central electric bicycle according to the present invention.
Fig. 3 is a rear view of the testing apparatus of the center-mounted electric bicycle of the present invention.
In the figure:
1. front wheel lifting platform
2. Servo motor
3. Servo motor XYZ-axis adjusting mechanism
4. Magnetic powder dynamometer
5. Flywheel wheel
6. Rear wheel roller
7. Middle motor
8. Synchronous belt
9. Front wheel roller
10. Power distribution cabinet
11. Status display screen
12. Vehicle body
13. Counterweight device
14. A device frame.
Detailed Description
A testing device of a central electric power-assisted bicycle is shown in figures 1 to 3 and comprises a front wheel lifting platform 1, a driving force simulation device, a magnetic powder dynamometer 4, a flywheel 5, a rear wheel roller 6, a synchronous belt 8, a front wheel roller 9, a counterweight device 13 and a device frame 14 for mounting the components, wherein the device frame 14 is further provided with a state display screen 11 and a power distribution cabinet 10.
The central electric power-assisted bicycle comprises a bicycle body 12, a front wheel rotatably arranged on the front side of the bicycle body 12, a rear wheel rotatably arranged on the rear side of the bicycle body 12 and a central motor 7 fixed in the middle of the bicycle body 12, wherein the central motor 7 is provided with a central motor shaft;
the front wheel lifting platform 1 is arranged on a first side of the device frame 14, and is provided with a lifting mechanism for adjusting the height of a front wheel and a front wheel roller 9 for movably abutting against the wheel surface of the front wheel, the front wheel roller 9 is rotatably arranged on the upper part of the lifting mechanism, the front wheel roller 9 is larger than the front wheel, the width of the wheel surface of the front wheel roller 9 is 2-10 times of the width of the wheel surface of the front wheel, and the wheel surface of the front wheel roller 9 is provided with a rubber layer;
the driving force simulation device is arranged in the middle of the device frame 14 and is provided with a servo motor 2 and a servo motor XYZ axis adjusting mechanism 3, the servo motor XYZ axis adjusting mechanism 3 is fixed in the middle of the device frame 14, the servo motor 2 is fixed in the servo motor XYZ axis adjusting mechanism 3, a rotating shaft of the servo motor 2 is in transmission connection with a middle-placed motor shaft, and the rotating shaft and the middle-placed motor shaft are coaxially arranged and used for simulating the treading torque of a human;
the magnetic powder dynamometer 4 is arranged on the second side of the device frame 14, is provided with a load torque applying part and a rear wheel roller 6 which is arranged on the load torque applying part and is used for movably abutting against the wheel surface of the rear wheel, the rear wheel roller 6 is larger than the rear wheel, the width of the wheel surface of the rear wheel roller 6 is 2-10 times of the width of the wheel surface of the rear wheel, the wheel surface of the rear wheel roller 6 is provided with a rubber layer,
the synchronous belt 8 is connected with the front wheel roller 9 and the rear wheel roller 6 in a transmission way, the flywheel 5 and the rear wheel roller 6 are coaxially arranged, and the rear wheel roller 6 is connected with the flywheel 5 in a transmission way;
the counterweight device 13 is mounted on the upper portion of the device frame 14, and the counterweight device 13 is provided with a push rod for abutting against the vehicle body 12 for simulating the body weights of different riders.
The counter weight device 13 can be selected from an up-down movement type counter weight mechanism, under the condition that the body weight of a real rider is simulated, the counter weight device 13 which can be selected from an up-down movement type counter weight mechanism is selected, and the problem that the gravity is larger due to the traditional compression type is avoided. The up-down play type includes a push rod slidably mounted in the device frame 14 in the vertical direction and a plurality of weights for optional use, and the push rod is provided with a plurality of weights in an upward play manner.
The counterweight device 13 may also be a cylinder counterweight mechanism, which includes a cylinder and a push rod mounted on the cylinder.
The power distribution cabinet 10 is provided with a power supply device and a detection circuit, the power supply device is respectively and electrically connected with detection electricity, the middle-placed motor 7, the lifting mechanism, the servo motor 2, the servo motor XYZ axis adjusting mechanism 3 and the magnetic powder dynamometer 4, the detection electricity is respectively and electrically connected with the middle-placed motor 7, the lifting mechanism, the servo motor 2, the servo motor XYZ axis adjusting mechanism 3 and the magnetic powder dynamometer 4, and the power distribution cabinet is used for reflecting the stress condition of real riding of the middle-placed electric power-assisted bicycle and verifying the performance of a power-assisted system.
The invention can truly simulate riding stress conditions according to the working principle of the central electric power-assisted bicycle, and automatically detect and verify the performance of the power-assisted system of the central electric power-assisted bicycle through the detection circuit.
A testing method of a central electric power-assisted bicycle uses the testing device of the central electric power-assisted bicycle to simulate and reflect the real riding stress condition of the central electric power-assisted bicycle, automatically detects and verifies the performance of a power-assisted system of the central electric power-assisted bicycle through a detection circuit,
the stress analysis of the whole bicycle is carried out on the centrally-mounted electric power-assisted bicycle which runs on the road, and the main driving force in the riding process comprises the human treading force F man And a motor assisting force F of the middle motor 7 a The resistance in the riding process comprises wind resistance F in the riding process W Component F of gravity in the direction of the slope G Rolling friction force F between front and rear tires and the ground f ，
The middle-mounted electric power-assisted bicycle is arranged inside a device frame 14 of a testing device of the middle-mounted electric power-assisted bicycle, the wheel surface of a front wheel is abutted against a front wheel roller 9 of a front wheel lifting platform 1, the height and the direction of the front wheel roller 9 are adjusted through the front wheel lifting platform 1 and a lifting mechanism, the height of the front wheel is further adjusted, different slope road conditions are simulated,
the shaft of the middle motor is connected with the rotating shaft of the servo motor 2, the rotating shaft and the shaft of the middle motor are coaxially arranged, so that the additional bending moment interference caused by non-concentricity is avoided, the simulation device is used for simulating the treading torque of a human,
the wheel surface of the rear wheel is abutted against a rear wheel roller 6 of the magnetic powder dynamometer 4, the rear wheel is loaded with torque through the magnetic powder dynamometer 4 to serve as rear wheel load, and wind resistance F in the riding process of the whole vehicle is simulated W Rolling friction force F between front and rear tires and the ground f ；
The front wheel roller 9 and the rear wheel roller 6 are connected through synchronous belt transmission, so that the front wheel roller 9 and the rear wheel roller 6 are in same-frequency transmission and used for simulating the synchronous transmission of the front wheel and the rear wheel, so that the friction coefficient of the real road condition is simulated, and the wind resistance F in the riding process in the whole riding process is simulated W And rolling friction force F between front and rear tires and the ground f ，
The push rod of the counterweight device 13 is pressed against the vehicle body 12, and a thrust force for simulating the weight of the rider is applied to the vehicle body 12 through the push rod of the counterweight device 13.
The above description is only a preferred embodiment of the present invention, and it should not be understood that the present invention is limited to the details of the embodiment and the range of applications, which can be changed by those skilled in the art according to the spirit of the present invention.
Claims (5)
1. The utility model provides a testing arrangement of central formula electric bicycle that helps which characterized in that: comprises a device frame (14), a power distribution cabinet (10), a front wheel lifting platform (1), a driving force simulation device, a magnetic powder dynamometer (4), a flywheel (5), a rear wheel roller (6), a synchronous belt (8), a front wheel roller (9) and a counterweight device (13),
the central electric power-assisted bicycle comprises a bicycle body (12), a front wheel rotatably mounted on the front side of the bicycle body (12), a rear wheel rotatably mounted on the rear side of the bicycle body (12) and a central motor (7) fixed in the middle of the bicycle body (12), wherein the central motor (7) is provided with a central motor shaft;
the front wheel lifting platform (1) is arranged on the first side of the device frame (14), and is provided with a lifting mechanism for adjusting the height of the front wheel and a front wheel roller (9) for movably abutting against the wheel surface of the front wheel, the front wheel roller (9) is rotatably arranged on the upper part of the lifting mechanism, and the wheel surface of the front wheel roller (9) is provided with a rubber layer;
the driving force simulation device is arranged in the middle of the device frame (14) and is provided with a servo motor (2) and a servo motor XYZ axis adjusting mechanism (3), the servo motor XYZ axis adjusting mechanism (3) is fixed in the middle of the device frame (14), the servo motor (2) is fixed on the servo motor XYZ axis adjusting mechanism (3), a rotating shaft of the servo motor (2) is in transmission connection with a middle-placed motor shaft, and the rotating shaft and the middle-placed motor shaft are coaxially arranged and used for simulating the treading torque of a person;
the magnetic powder dynamometer (4) is arranged on the second side of the device frame (14), is provided with a load torque applying part and a rear wheel roller (6) which is arranged on the load torque applying part and is used for movably abutting against the wheel surface of the rear wheel, the wheel surface of the rear wheel roller (6) is provided with a rubber layer,
the synchronous belt (8) is in transmission connection with the front wheel roller (9) and the rear wheel roller (6), the flywheel (5) and the rear wheel roller (6) are coaxially arranged, and the rear wheel roller (6) is in transmission connection with the flywheel (5);
the counterweight device (13) is arranged at the upper part of the device frame (14), and the counterweight device (13) is provided with a push rod which is used for propping against the body (12) and is used for simulating the weights of different riders;
switch board (10) are provided with power supply unit and detection circuitry, power supply unit electricity respectively connects detection electricity, put motor (7), elevating system, servo motor (2), servo motor XYZ axle adjustment mechanism (3) and magnetic powder dynamometer (4), detect electricity and connect respectively and put motor (7), elevating system, servo motor (2), servo motor XYZ axle adjustment mechanism (3) and magnetic powder dynamometer (4) in the electricity for the atress condition and the helping hand system performance that reflect the true of riding of putting formula electric bicycle in the middle verify.
2. The testing device for the mid-mounted electric bicycle according to claim 1, wherein: the counterweight device (13) comprises an up-and-down shifting type counterweight mechanism, the up-and-down shifting type counterweight mechanism comprises a push rod and a plurality of weights for selective use, which are slidably mounted on the device frame (14) along the vertical direction, and the push rod is provided with a plurality of weights in a shifting manner.
3. The testing device for the mid-mounted electric bicycle according to claim 1, wherein: the counterweight device (13) comprises a cylinder type counterweight mechanism, and the cylinder type counterweight mechanism comprises a cylinder and the push rod arranged on the cylinder.
4. A testing method of a central electric power-assisted bicycle is characterized in that: the testing device of the central electric bicycle of claim 1 is used for simulating and reflecting the stress condition of the central electric bicycle during real riding, the performance of the power assisting system of the central electric bicycle is automatically detected and verified through the detection circuit,
the central electric power-assisted bicycle comprises a bicycle body (12), a front wheel rotatably mounted on the front side of the bicycle body (12), a rear wheel rotatably mounted on the rear side of the bicycle body (12) and a central motor (7) fixed in the middle of the bicycle body (12), wherein the central motor (7) is provided with a central motor shaft;
the stress analysis of the whole vehicle is carried out on the central electric power-assisted bicycle which is driven on the road, and the main driving force in the riding process comprises the human tread force F man And a motor assisting force F of the middle motor (7) a The resistance in the riding process comprises wind resistance F in the riding process W Component F of gravity in the direction of the slope G Rolling friction force F between front and rear tires and the ground f ，
The middle-mounted electric power-assisted bicycle is arranged in a device frame (14) of a testing device of the middle-mounted electric power-assisted bicycle, the wheel surface of a front wheel is abutted against a front wheel roller (9) of a front wheel lifting platform (1), the height and the direction of the front wheel roller (9) are adjusted through the front wheel lifting platform (1) and a lifting mechanism, the height of the front wheel is further adjusted, different slope road conditions are simulated,
the shaft of the middle motor is connected with the rotating shaft of the servo motor (2), the rotating shaft and the shaft of the middle motor are coaxially arranged, so that the additional bending moment interference caused by non-concentricity is avoided, the simulation device is used for simulating the treading torque of a human,
the wheel surface of the rear wheel is abutted against a rear wheel roller (6) of the magnetic powder dynamometer (4), and the rear wheel is loaded with torque through the magnetic powder dynamometer (4) to be used asRear wheel load, wind resistance F in riding process of simulating whole riding W Rolling friction force F between front and rear tires and the ground f ；
The front wheel roller (9) and the rear wheel roller (6) are connected through synchronous belt transmission, so that the front wheel roller (9) and the rear wheel roller (6) are in same-frequency transmission and used for simulating the front wheel and the rear wheel in synchronous transmission, so that the friction coefficient of a real road condition is simulated, and the wind resistance F in the riding process of the whole riding process is simulated W And rolling friction force F between front and rear tires and the ground f ，
The push rod of the counterweight device (13) is abutted against the vehicle body (12), and a thrust force for simulating the weight of a rider is applied to the vehicle body (12) through the push rod of the counterweight device (13).
5. The method for testing a mid-mounted electric bicycle according to claim 4, wherein the method comprises the following steps: a testing device of a central electric power-assisted bicycle comprises a power distribution cabinet (10), a driving force simulation device, a flywheel (5), a front wheel roller (9) and a counterweight device (13),
the front wheel lifting platform (1) is arranged on the first side of the device frame (14), and is provided with a lifting mechanism for adjusting the height of the front wheel and a front wheel roller (9) for movably abutting against the wheel surface of the front wheel, the front wheel roller (9) is rotatably arranged on the upper part of the lifting mechanism, and the wheel surface of the front wheel roller (9) is provided with a rubber layer;
the driving force simulation device is arranged in the middle of the device frame (14) and is provided with a servo motor (2) and a servo motor XYZ axis adjusting mechanism (3), the servo motor XYZ axis adjusting mechanism (3) is fixed in the middle of the device frame (14), the servo motor (2) is fixed to the servo motor XYZ axis adjusting mechanism (3), a rotating shaft of the servo motor (2) is in transmission connection with the middle motor shaft, and the rotating shaft and the middle motor shaft are coaxially arranged and used for simulating the treading torque of a human;
the magnetic powder dynamometer (4) is arranged on the second side of the device frame (14), is provided with a load torque applying part and a rear wheel roller (6) which is arranged on the load torque applying part and is used for movably abutting against the wheel surface of the rear wheel, the wheel surface of the rear wheel roller (6) is provided with a rubber layer,
the synchronous belt (8) is in transmission connection with the front wheel roller (9) and the rear wheel roller (6), the flywheel (5) and the rear wheel roller (6) are coaxially arranged, and the rear wheel roller (6) is in transmission connection with the flywheel (5);
the counterweight device (13) is arranged at the upper part of the device frame (14), and the counterweight device (13) is provided with a push rod which is used for propping against the body (12) and is used for simulating the weights of different riders;
switch board (10) are provided with power supply unit and detection circuitry, power supply unit electricity respectively connects detection electricity, put motor (7), elevating system, servo motor (2), servo motor XYZ axle adjustment mechanism (3) and magnetic powder dynamometer (4), detect electricity and connect respectively and put motor (7), elevating system, servo motor (2), servo motor XYZ axle adjustment mechanism (3) and magnetic powder dynamometer (4) in the electricity for the atress condition and the helping hand system performance that reflect the true of riding of putting formula electric bicycle in the middle verify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210791938.4A CN115077943A (en) | 2022-07-07 | 2022-07-07 | Testing device and testing method for central electric power-assisted bicycle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210791938.4A CN115077943A (en) | 2022-07-07 | 2022-07-07 | Testing device and testing method for central electric power-assisted bicycle |
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| CN115077943A true CN115077943A (en) | 2022-09-20 |
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| CN202210791938.4A Withdrawn CN115077943A (en) | 2022-07-07 | 2022-07-07 | Testing device and testing method for central electric power-assisted bicycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330326A (en) * | 2023-09-25 | 2024-01-02 | 珠海市钧兴机电有限公司 | Dynamic testing device and testing method for transmission system |
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2022
- 2022-07-07 CN CN202210791938.4A patent/CN115077943A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330326A (en) * | 2023-09-25 | 2024-01-02 | 珠海市钧兴机电有限公司 | Dynamic testing device and testing method for transmission system |
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Application publication date: 20220920 |