CN214667675U - Electric bicycle brake detection system - Google Patents
Electric bicycle brake detection system Download PDFInfo
- Publication number
- CN214667675U CN214667675U CN202120772055.XU CN202120772055U CN214667675U CN 214667675 U CN214667675 U CN 214667675U CN 202120772055 U CN202120772055 U CN 202120772055U CN 214667675 U CN214667675 U CN 214667675U
- Authority
- CN
- China
- Prior art keywords
- brake drum
- electric bicycle
- brake
- detected
- driving mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to an electric bicycle braking detecting system relates to electric bicycle technical field to solve the lower problem of electric bicycle braking detection convenience degree among the correlation technique, include: the device comprises a guide rail, a driving mechanism, a hub rotating table and a rotating speed detection sensor; the guide rail comprises a connecting part, the hub platform comprises a plurality of brake drums with different friction coefficients, and the connecting part and the brake drums are arranged in a one-to-one correspondence manner; the plurality of brake drums are connected with the guide rail through connecting parts; the driving mechanism is connected with the connecting part and can drive the connecting part to move along the guide rail so as to switch the plurality of brake drums with different friction coefficients on the hub table and drive the brake drums to rotate; the hub rotating table is used for bearing the electric bicycle to be detected, and the brake drum is contacted with the wheel of the electric bicycle to be detected; the rotating speed detection sensor is used for counting the number of rotating turns of the brake drum in the process of detecting the braking of the electric bicycle to be detected.
Description
Technical Field
The disclosure relates to the technical field of electric bicycles, in particular to an electric bicycle brake detection system.
Background
The electric bicycle is a vehicle which is provided with a motor, a storage battery, a controller and an instrument panel on the basis of the structure of the bicycle and takes the storage battery as a power source of the motor. The braking performance of an electric bicycle is very important not only for the riding safety of the rider riding the electric bicycle, but also for the safety of other road participants such as pedestrians and other electric bicycle riders.
In the related art, a tester usually rides the electric bicycle to be tested for braking detection, specifically rides the electric bicycle to be tested for braking operation at different speeds, so as to determine a braking distance, and determines the braking performance of the electric bicycle according to the braking distance. However, the method of detecting the riding is not only influenced by road conditions, such as other road participants, but also influenced by weather, and thus the convenience of detecting the braking of the electric bicycle is low.
SUMMERY OF THE UTILITY MODEL
The purpose of the present disclosure is to provide an electric bicycle brake detection system, need not the measurement personnel and ride electric bicycle and carry out the brake detection to do not receive the restriction of road condition in electric bicycle's brake detection process, also not influenced by weather, improved the convenience that electric bicycle braked and detected.
The present disclosure provides an electric bicycle brake detection system, the system (100) comprising: the device comprises a guide rail, a driving mechanism, a hub rotating table and a rotating speed detection sensor;
the guide rail comprises a connecting part, the hub platform comprises a plurality of brake drums with different friction coefficients, and the connecting part and the brake drums are arranged in a one-to-one correspondence manner;
the plurality of brake drums are connected with the guide rail through the connecting parts on the guide rail;
the driving mechanism is connected with the connecting part, can drive the connecting part to move along the guide rail so as to switch the plurality of brake drums with different friction coefficients on the hub table, and can drive the brake drums to rotate;
the hub rotating table is used for bearing an electric bicycle to be detected, the brake drum is in contact with wheels of the electric bicycle to be detected so as to provide wheel rotating power for the electric bicycle to be detected in the acceleration process of the electric bicycle to be detected and provide wheel braking friction force for the electric bicycle to be detected in the brake detection process of the electric bicycle to be detected;
the rotating speed detection sensor is used for counting the number of rotating turns of the brake drum in the brake detection process of the electric bicycle to be detected.
Preferably, the system further comprises: a switching mechanism;
the switching mechanism is used for switching the driving state of the driving mechanism;
wherein the driving states include a first driving state and a second driving state;
under the condition that the driving mechanism is in the first driving state, the driving mechanism is connected with the connecting part, so that the driving mechanism can drive the connecting part to move along the guide rail;
and under the condition that the driving mechanism is in the second driving state, the driving mechanism is connected with the brake drum, so that the brake drum can drive the wheels of the electric bicycle to be detected to rotate under the driving of the driving mechanism.
Preferably, said plurality of brake drums comprises a plurality of brake drum sets, each said brake drum set comprising a front brake drum and a rear brake drum;
the friction forces of the front brake drum and the rear brake drum in the same brake drum group are the same, and accordingly, the friction coefficients of the brake drum groups are different.
Preferably, the system further comprises: the adjusting mechanism is arranged corresponding to the brake drum set;
the adjusting mechanism is used for adjusting the distance between the front brake drum and the rear brake drum in the same brake drum group, so that the distance between the front brake drum and the rear brake drum is equal to the distance between the front wheel and the rear wheel of the electric bicycle to be detected.
Preferably, the system further comprises: the detection controller is connected with the rotating speed detection sensor;
the detection controller is used for counting the number of rotation turns of the brake drum through the rotating speed detection sensor in the process of detecting the braking of the electric bicycle to be detected.
Preferably, the system further comprises: the display screen is connected with the rotating speed detection sensor;
the display screen is used for receiving the counting of the rotation turns of the brake drum by the rotation speed detection sensor in the brake detection process of the electric bicycle to be detected and displaying the rotation turns.
Preferably, the system further comprises: the brake caliper is separated from the brake drum in the acceleration process of the electric bicycle to be detected, and is in contact with the brake drum in the brake detection process of the electric bicycle to be detected, so that the brake drum stops rotating in a braking mode.
Preferably, the system further comprises: a speed controller connected with the drive mechanism.
Preferably, the speed controller includes a first speed controller for controlling a moving speed of the brake drum along the guide rail during switching of the brake drums on the hub table, which have different friction coefficients.
Preferably, the speed controller comprises a second speed controller for controlling the rotation speed of the brake drum during acceleration of the electric bicycle to be detected.
Through the technical scheme, the following technical effects can be at least achieved:
(1) the braking detection process of the electric bicycle is characterized in that the braking detection is carried out on the electric bicycle without detection personnel, the braking detection is not limited by road conditions and is not influenced by weather, and the convenience of the braking detection of the electric bicycle is improved.
(2) The brake drum can simulate different road friction conditions based on different friction forces on the hub rotating table, so that the brake distance of the electric bicycle during running on different roads can be simulated. And drive the brake drum through actuating mechanism, drive electric bicycle's wheel rotation, do not need electric bicycle's battery to have sufficient storage electric quantity, avoid among the testing process because of the battery electric quantity is not enough, lead to the braking to detect and break, also can improve the convenience that electric bicycle braking detected.
(3) The brake drum set can provide braking force for the front wheel and the rear wheel of the electric bicycle at the same time, multiple detection is avoided, and the time cost of brake detection of the electric bicycle is saved. And the speed of the drum brake ring is displayed through a detection controller or a display screen, so that the braking distance of the electric bicycle is convenient to determine, and the braking performance of electric execution is convenient to determine.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic diagram of an electric bicycle brake detection system according to an exemplary illustration.
FIG. 2 is a schematic view of another electric bicycle brake detection system according to an exemplary illustration.
Reference numerals
The electric bicycle brake detection system comprises an electric bicycle brake detection system-100, a guide rail-101, a connecting part-1011, a driving mechanism-102, a hub platform-103, a brake drum-1031, a rotating speed detection sensor-104, a switching mechanism-105, an adjusting mechanism-106, a detection controller-107, a display screen-108, a brake caliper-109, a speed controller-110, a first speed controller-1101, a second speed controller-1102
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
It should be noted that in the present disclosure, the terms "first", "second", and the like in the description and in the claims, as well as in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Fig. 1 is a block diagram of an electric bicycle brake detection system according to an exemplary illustration, and referring to fig. 1, the system 100 includes: a guide rail 101, a drive mechanism 102, a hub table 103, and a rotation speed detection sensor 104;
the guide rail 101 comprises a connecting part 1011, the hub platform 103 comprises a plurality of brake drums 1031 with different friction coefficients, and the connecting parts 1011 and the brake drums 1031 are arranged in a one-to-one correspondence manner;
the plurality of brake drums 1031 are connected to the rail 101 via the connection portions 1011 on the rail 101;
the driving mechanism 102 is connected to the connecting portion 1011, the driving mechanism 102 can drive the connecting portion 1011 to move along the guide rail 101 so as to switch the plurality of brake drums 1031 with different friction coefficients on the hub platform 103, and the driving mechanism 102 can drive the brake drums 1031 to rotate;
the hub rotating table 103 is used for bearing an electric bicycle to be detected, the brake drum 1031 is in contact with the wheel of the electric bicycle to be detected so as to provide wheel rotation power for the electric bicycle to be detected in the acceleration process of the electric bicycle to be detected and provide wheel braking friction force for the electric bicycle to be detected in the brake detection process of the electric bicycle to be detected;
the rotation speed detection sensor 104 is configured to count the number of rotations of the brake drum 1031 in the process of detecting the braking of the electric bicycle to be detected.
In a specific implementation, the connection portion 1011 may be buckled on the guide rail 101, and the space between the connection portion 1011 and the guide rail 101 is filled with balls so as to slide on the guide rail by the balls.
During the acceleration of the electric bicycle to be detected, the driving mechanism 102 is connected with the brake drum 1031 on the hub platform 103 to provide the brake drum 1031 with rotational power; during the switching of the brake drum 1031, the brake drum on the hub table 103 is switched out of the hub table 103, and the brake drum 1031 that is not on the hub table 103 is switched to the hub table 103.
In one embodiment, the electric bicycle brake detection includes a front wheel brake detection and a rear wheel brake detection. In the front wheel brake detection process, the brake drum 1031 contacts with the front wheel of the electric bicycle to be detected, provides wheel rotation power for the front wheel of the electric bicycle to be detected in the acceleration process of the electric bicycle to be detected, and provides wheel brake friction force for the front wheel of the electric bicycle to be detected in the brake detection process of the electric bicycle to be detected.
In the rear wheel brake detection process, the brake drum 1031 contacts with the rear wheel of the electric bicycle to be detected, provides wheel rotation power for the rear wheel of the electric bicycle to be detected in the acceleration process of the electric bicycle to be detected, and provides wheel brake friction force for the rear wheel of the electric bicycle to be detected in the brake detection process of the electric bicycle to be detected. Thus, the front wheel braking performance and the rear wheel braking performance of the electric bicycle can be independently detected.
In a specific implementation, the bearings of the brake drum 1031 are connected to the motor of the drive mechanism 102 by a chain or belt to convert the kinetic energy of the motor to the kinetic energy of the brake drum 1031.
Further, the rotation speed detecting sensor 104 may be two magnetic components, one of which is disposed on the brake drum 1031, the other of which is fixedly disposed on the hub platform 103, and the two magnetic components are correspondingly disposed, and when the magnetic component disposed on the brake drum 1031 passes through the magnetic component fixedly disposed on the hub platform 103, it represents that the brake drum 1031 rotates once.
Further, a calculation controller may be provided to calculate the braking distance of the electric bicycle based on the circumference and the number of rotations of the brake drum 1031.
In one embodiment, the system further comprises a water sprayer for spraying water onto the surface of the brake drum 1031 on the hub platform 103 to simulate a brake surface in rainy weather.
The system has the advantages that in the brake detection process of the electric bicycle, a detector is not required to ride the electric bicycle for brake detection, the brake detection is not limited by road conditions and is not influenced by weather, and the brake detection convenience of the electric bicycle is improved. Based on a plurality of brake drums with different friction forces on the hub rotating table, different road friction conditions can be simulated so as to simulate the braking distance of the electric bicycle when the electric bicycle runs on different roads. And drive the brake drum through actuating mechanism, drive electric bicycle's wheel rotation, do not need electric bicycle's battery to have sufficient storage electric quantity, avoid among the testing process because of the battery electric quantity is not enough, lead to the braking to detect and break, also can improve the convenience that electric bicycle braking detected.
On the basis of the above embodiment, the system 100 further includes: a switching mechanism 105;
the switching mechanism 105 is used for switching the driving state of the driving mechanism 102;
wherein the driving states include a first driving state and a second driving state;
when the driving mechanism 102 is in the first driving state, the driving mechanism 102 is connected to the connecting portion 1011, so that the driving mechanism 102 can drive the connecting portion 1011 to move along the guide rail 101;
under the condition that the driving mechanism 102 is in the second driving state, the driving mechanism 102 is connected to the brake drum 1031, so that the brake drum 1031 can drive the wheel of the electric bicycle to be detected to rotate under the driving of the driving mechanism 102.
In specific implementation, the switching mechanism 105 may be based on an electric control or a manual control.
The switching mechanism 105 may switch the driving state of the driving mechanism 102 by a gear system, or may switch the driving state of the driving mechanism 102 by a belt system.
The system can switch the driving state of the driving mechanism through the switching mechanism, and can also improve the convenience of the brake detection of the electric bicycle.
On the basis of the above embodiment, the plurality of brake drums 1031 constitute a plurality of brake drum sets, each of which includes one front brake drum and one rear brake drum;
the friction forces of the front brake drum and the rear brake drum in the same brake drum group are the same, and accordingly, the friction coefficients of the brake drum groups are different.
In particular, the front and rear brake drums in the same brake drum set are connected by a belt, and the drive mechanism 102 is connected with the front brake drum, or the drive mechanism 102 is connected with the rear brake drum.
The system can provide braking force for the front wheel and the rear wheel of the electric bicycle simultaneously through the brake drum set, multiple detection is avoided, and the time cost of brake detection of the electric bicycle is saved.
On the basis of the above embodiment, the system 100 further includes: the adjusting mechanism 106 is arranged corresponding to the brake drum set;
the adjusting mechanism 106 is configured to adjust a distance between the front brake drum and the rear brake drum in the same brake drum set, so that the distance between the front brake drum and the rear brake drum is equal to a distance between a front wheel and a rear wheel of the electric bicycle to be detected.
In one embodiment, the adjusting mechanism 106 may be a mechanism with scale marks, for example, a brake drum mounting slot is fixed at one end of the adjusting mechanism 106, and a brake drum mounting slot capable of moving along the guide rail 101 is arranged at the other end of the adjusting mechanism 106.
On the basis of the above embodiment, the system 100 further includes: a detection controller 107, wherein the detection controller 107 is connected to the rotation speed detection sensor 104;
the detection controller 107 is configured to count the number of rotations of the brake drum 1031 by the rotation speed detection sensor 104 in the process of detecting the braking of the electric bicycle to be detected.
The system records the drum brake ring speed through the detection controller, so that the braking distance of the electric bicycle is convenient to determine, and the braking performance of electric execution is convenient to determine.
On the basis of the above embodiment, the system 100 further includes: a display screen 108, wherein the display screen 108 is connected with the rotation speed detection sensor 104;
the display screen 108 is configured to receive the count of the number of turns of the brake drum 1031 by the rotation speed detection sensor 104 and display the number of turns of the rotation in the process of detecting the braking of the electric bicycle to be detected.
The system is convenient to determine the braking distance of the electric bicycle by displaying the braking ring speed of the rotary drum, and further convenient to determine the braking performance of electric execution.
On the basis of the above embodiment, the system 100 further includes: the brake caliper 109 is separated from the brake drum 1031 in the acceleration process of the electric bicycle to be detected, and is in contact with the brake drum 1031 in the brake detection process of the electric bicycle to be detected, so that the brake drum 1031 stops rotating in a braking mode.
In particular implementations, the brake caliper 109 can be fixed to the hub platform 103 such that the brake drum 1031 is within the caliper opening of the brake caliper 109 when the brake drum 1031 is moved to the hub platform for electric bicycle brake detection. The brake caliper 109 may be based on either an electrically controlled or a mechanically based clamping.
On the basis of the above embodiment, the system 100 further includes: a speed controller 110, the speed controller 110 being connected to the drive mechanism 102.
On the basis of the above embodiment, the speed controller 110 includes a first speed controller 1101 for controlling the moving speed of the brake drum 1031 along the guide rail 101 during switching of the brake drum 1031 having different friction coefficients on the hub table 103.
Accordingly, in the case where the drive mechanism 102 conveys the drive connection portion 1011 by a belt, the first speed controller 1101 controls the conveying speed of the belt, and thus the moving speed of the brake drum 1031 along the guide rail 101.
By adopting the system, the brake drum can be conveniently replaced, and the moving speed of the brake drum along the guide rail can be controlled in the replacement process.
On the basis of the above embodiment, the speed controller 109 comprises a second speed controller 1102 for controlling the rotation speed of the brake drum 1031 during the acceleration of the electric bicycle to be detected.
In a specific implementation, the bearings of the brake drum 1031 are connected to the motor of the driving mechanism 102 by a chain or a belt, so as to drive the brake drum 1031 by the belt or the chain.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. An electric bicycle brake detection system, characterized in that the system (100) comprises: a guide rail (101), a drive mechanism (102), a hub table (103), and a rotational speed detection sensor (104);
the guide rail (101) comprises a connecting part (1011), the hub rotating table (103) comprises a plurality of brake drums (1031) with different friction coefficients, and the connecting part (1011) and the brake drums (1031) are arranged in a one-to-one correspondence manner;
the brake drums (1031) are connected to the guide rail (101) via the connecting portions (1011) on the guide rail (101);
the driving mechanism (102) is connected with the connecting part (1011), the driving mechanism (102) can drive the connecting part (1011) to move along the guide rail (101) so as to switch a plurality of brake drums (1031) with different friction coefficients on the hub platform (103), and the driving mechanism (102) can drive the brake drums (1031) to rotate;
the hub rotating table (103) is used for bearing an electric bicycle to be detected, the brake drum (1031) is in contact with the wheel of the electric bicycle to be detected so as to provide wheel rotation power for the electric bicycle to be detected in the acceleration process of the electric bicycle to be detected and provide wheel braking friction force for the electric bicycle to be detected in the brake detection process of the electric bicycle to be detected;
the rotating speed detection sensor (104) is used for counting the number of rotating turns of the brake drum (1031) in the brake detection process of the electric bicycle to be detected.
2. The system of claim 1, further comprising: a switching mechanism (105);
the switching mechanism (105) is used for switching the driving state of the driving mechanism (102);
wherein the driving states include a first driving state and a second driving state;
when the driving mechanism (102) is in the first driving state, the driving mechanism (102) is connected with the connecting part (1011), so that the driving mechanism (102) can drive the connecting part (1011) to move along the guide rail (101);
under the condition that the driving mechanism (102) is in the second driving state, the driving mechanism (102) is connected with the brake drum (1031), so that the brake drum (1031) can drive the wheels of the electric bicycle to be detected to rotate under the driving of the driving mechanism (102).
3. The system of claim 1, wherein said plurality of brake drums (1031) form a plurality of brake drum sets, each said brake drum set comprising one front brake drum and one rear brake drum;
the friction forces of the front brake drum and the rear brake drum in the same brake drum group are the same, and accordingly, the friction coefficients of the brake drum groups are different.
4. The system of claim 3, further comprising: the adjusting mechanism (106) is arranged corresponding to the brake drum set;
the adjusting mechanism (106) is used for adjusting the distance between the front brake drum and the rear brake drum in the same brake drum group, so that the distance between the front brake drum and the rear brake drum is equal to the distance between the front wheel and the rear wheel of the electric bicycle to be detected.
5. The system of claim 1, further comprising: a detection controller (107), wherein the detection controller (107) is connected with the rotating speed detection sensor (104);
the detection controller (107) is used for counting the rotation turns of the brake drum (1031) through the rotating speed detection sensor (104) in the process of detecting the braking of the electric bicycle to be detected.
6. The system of claim 1, further comprising: the display screen (108), the said display screen (108) is connected with said rotational speed detection sensor (104);
the display screen (108) is used for receiving the counting of the rotation turns of the brake drum (1031) by the rotation speed detection sensor (104) in the brake detection process of the electric bicycle to be detected and displaying the rotation turns.
7. The system of claim 1, further comprising: the brake caliper (109) is separated from the brake drum (1031) in the acceleration process of the electric bicycle to be detected, and is in contact with the brake drum (1031) in the brake detection process of the electric bicycle to be detected, so that the brake drum (1031) stops rotating in a braking mode.
8. The system according to any one of claims 1-7, further comprising: a speed controller (110), the speed controller (110) being connected to the drive mechanism (102).
9. A system according to claim 8, characterized in that the speed controller (110) comprises a first speed controller (1101) for controlling the speed of movement of the brake drum (1031) along the rail (101) during switching of the brake drum (1031) on the hub table (103) where the coefficients of friction are different.
10. The system according to claim 8, wherein the speed controller (110) comprises a second speed controller (1102) for controlling the rotational speed of the brake drum (1031) during acceleration of the electric bicycle to be detected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120772055.XU CN214667675U (en) | 2021-04-15 | 2021-04-15 | Electric bicycle brake detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120772055.XU CN214667675U (en) | 2021-04-15 | 2021-04-15 | Electric bicycle brake detection system |
Publications (1)
Publication Number | Publication Date |
---|---|
CN214667675U true CN214667675U (en) | 2021-11-09 |
Family
ID=78462545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202120772055.XU Active CN214667675U (en) | 2021-04-15 | 2021-04-15 | Electric bicycle brake detection system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN214667675U (en) |
-
2021
- 2021-04-15 CN CN202120772055.XU patent/CN214667675U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102589897B (en) | Development experimental platform for detecting and controlling automobile tire pressure ABS (Anti Lock Brake System)/ASR (Acceleration Slip Regulation) key part | |
CN111912630B (en) | ABS brake performance test in-loop simulation double-wheel test bed and test method | |
CN101979987B (en) | Vehicle brake detection table with acceleration simulation function | |
CN108535027B (en) | Static side-turning stability test bed for tractor | |
CN205691348U (en) | A kind of vehicle ABS brake tester carrying out multiple test | |
KR100873307B1 (en) | Chassis Dynamo System | |
CN108132155A (en) | A kind of 4 wheel driven Chassis dynamometer detecting system for being applicable in different wheelbases | |
CN106585404A (en) | Electric bicycle energy recovery system and method | |
CN214667675U (en) | Electric bicycle brake detection system | |
CN102507215A (en) | Test bench for electric vehicle drive assembly | |
CN106441922A (en) | Passenger car ABS brake test bench device | |
CN108303647A (en) | A kind of durable test machine of the direct current generator of new energy bicycle | |
CN103868699A (en) | Wheelchair brake detection device | |
CN109959393B (en) | Device and method for judging galloping state of electric inertial navigation turntable | |
CN111189647A (en) | Inertia type automobile brake test bed | |
CN202075075U (en) | Full-time four-wheel-drive or six-wheel-drive vehicle chassis dynamometer | |
CN106525451A (en) | Dynamometer testing stand for new energy vehicles | |
CN109855887A (en) | Flat rubber belting formula road simulator for automatic driving vehicle test | |
CN208006951U (en) | A kind of cableway carriage | |
CN209230963U (en) | A kind of electric automobile during traveling mile detection device | |
CN106525463A (en) | Balance vehicle test device | |
CN203758751U (en) | Detector for wheelchair brake | |
CN101701876B (en) | Performance detecting platform for motor vehicle | |
CN201903452U (en) | Automobile dynamic performance detection device | |
CN201955231U (en) | Detection line for speed reducing equipment of railway vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |