CN109682612B - Multipurpose testing device for wading test of electric drive small-sized vehicle - Google Patents
Multipurpose testing device for wading test of electric drive small-sized vehicle Download PDFInfo
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- CN109682612B CN109682612B CN201910064273.5A CN201910064273A CN109682612B CN 109682612 B CN109682612 B CN 109682612B CN 201910064273 A CN201910064273 A CN 201910064273A CN 109682612 B CN109682612 B CN 109682612B
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Abstract
The application discloses a multipurpose testing device for wading test of an electrically-driven small-sized vehicle. The application discloses a multipurpose testing device which comprises a water tank main body, a front roller group, a rear roller group, a water wheel transmission assembly and a water flow driving assembly, wherein the front roller group and the rear roller group are arranged on the water tank main body; the water flow drive is used for providing power; the water tank main body is of a ship-shaped structure with two pointed ends, one end of the water tank main body is provided with a water inlet, and the other end is provided with a water outlet; the water tank main body comprises a water inlet water tank section, a horizontal arrangement water tank section, a test area and a backwater water tank section; the water inlet water tank section and the horizontal arrangement water tank section are used for arranging inlet water, providing stable water flow for the test area, and the water return section is used for avoiding water outlet from affecting stable water flow; the front roller group and the rear roller group respectively comprise a main roller and a secondary roller with adjustable spacing, and the spacing between the front roller group and the rear roller group is also adjustable; the hydro-drive assembly is used to power the main roller of the front or rear roller set. The multipurpose testing device can meet the wading road testing requirements of various electric driving small vehicles; the water flow in the test area is stable, and the accuracy of the test is ensured.
Description
Technical Field
The application relates to the field of wading test of electric small-sized vehicles, in particular to a multipurpose test device for wading test of an electric drive small-sized vehicle.
Background
For 2016 years, electric balance cars have become more popular, corresponding safety test standards have been released more and more, UL2272 is available before, and corresponding national standards such as GB/T34667 and GB/T34668 are available; wading tests are mentioned in all three standards. In the conventional electric personal vehicle, an electric bicycle, a method of wading road driving test is proposed in GB17761 standard of 2018. The wading running test method proposed by the method is as follows: the electric bicycle is ridden by a tester in a water pool with a depth of 100mm at a speed of 15km/h for 500 meters, and if the runway is not long enough, the electric bicycle can travel back and forth for a period of not less than 10 minutes. Currently, electric balance vehicles, electric bicycles, scooter and other electric drive small vehicles are all methods which follow the GB17761 standard.
The GB17761 standard method requires a pool runway of at least 50 meters in length, taking into account that a round-trip bicycle or other electrically driven small vehicle needs a certain distance to accelerate to a specified speed. And, because of the distance and time required for round trip acceleration, the shorter the pool runway, the longer the test time. In addition, the tire and the pool are greatly reduced in low friction when running at the speed of 15km/h in the water depth of 100mm, and the accident of turning over and falling easily occurs, so that personal injury is caused to the testers.
Therefore, there is a need to develop a safe and reliable wading test solution suitable for various electrically driven small vehicles.
Disclosure of Invention
The application aims to provide a novel multipurpose testing device for wading test of an electrically-driven small-sized vehicle.
The application adopts the following technical scheme:
the application discloses a multipurpose testing device for wading test of an electrically-driven small-sized vehicle, which comprises a water tank main body, a front roller group, a rear roller group, a water wheel transmission assembly and a water flow driving assembly, wherein the water tank main body is provided with a water inlet; the water tank main body is of a ship-shaped structure with two pointed ends, one end of the water tank main body is a water inlet, and the other end of the water tank main body is a water outlet; the water tank main body is sequentially divided into a water inlet water tank section, a horizontal arrangement water tank section, a test area and a backwater water tank section according to functions from a water inlet to a water outlet; the water flow driving assembly is used for providing power for water flow, so that the water flow enters the water inlet and passes through the test area at a set flow rate; the water inlet water tank section is in a pyramid shape, the water inlet is arranged at the small opening end of the pyramid-shaped water inlet water tank section, the water inlet is taken as a starting point, and a plurality of vertical water inlet water flow guide plates which are arranged in a fan shape are arranged in the water inlet water tank section and are used for dividing water into a plurality of small strands of water flow; the bottom of the horizontal arrangement water tank section is provided with a fixed horizontal water flow guide plate, the top of the horizontal arrangement water tank section is provided with a movable horizontal water flow guide plate, the fixed horizontal water flow guide plate and the movable horizontal water flow guide plate are horizontally arranged and are folded towards the center at one end of the test area, the water flow is horizontally guided to the test area, and the water inlet is pressed to the horizontal plane by adjusting the movable horizontal water flow guide plate; the test area is used for placing an electrically-driven small-sized vehicle to be tested, the bottom of the test area is provided with a plurality of water flow baffles capable of moving up and down, and the water flow baffles support the bottom of a water body and are used for adjusting the water flow section and the depth of water flow; the water return water tank section is in a pyramid shape, the water outlet is arranged at the small opening end of the pyramid-shaped water return water tank section, the water outlet is taken as a starting point, a plurality of vertical water return water flow guide plates which are arranged in a fan shape are arranged in the water return water tank section and are used for dividing water flow into a plurality of small strands and converging at the water outlet; the front roller group comprises a front main roller and a front auxiliary roller which are parallel to each other, the front main roller has rough surface, the front auxiliary roller can move relative to the front main roller, and the distance between the front main roller and the front auxiliary roller is adjusted to adapt to different tyre sizes of electric-driven small vehicles to be tested; similarly, the rear roller group comprises a rear main roller and a rear auxiliary roller which are parallel to each other, the surface of the rear main roller is rough, the rear auxiliary roller can move relative to the rear main roller, and the distance between the rear main roller and the rear auxiliary roller is adjusted to adapt to the sizes of tires of different electric-driven small vehicles to be tested; the front roller group can be integrally and movably fixedly arranged at one end of the test area close to the water inlet, and the corresponding rear roller group can be integrally and movably fixedly arranged at one end of the test area close to the water outlet; during testing, the water flow moves along the length direction of the water tank main body, the front roller group and the rear roller group are parallel to each other, and the two roller groups are arranged in the vertical direction of the water flow; the water wheel transmission assembly comprises a water wheel and an even number of transmission gears, the output gears of the transmission gears are meshed with the main rollers of the front roller group or the rear roller group, when the water wheel transmission assembly is used, blades of the water wheel penetrate into water flow in a test area, the water wheel is driven to rotate through the water flow, and the main rollers of the front roller group or the rear roller group are driven to rotate through the transmission gears.
The electrically driven small-sized vehicle of the present application is particularly a small-sized wheeled vehicle driven by various electric power such as an electric balance car, an electric bicycle, a scooter, etc. According to the multipurpose testing device, the vertical water inlet flow guide plates are designed on the water inlet tank section, so that the impact force of inlet water can be resolved, and water flow is stably guided to a testing area through the two horizontal water flow guide plates of the horizontal water inlet tank section, so that turbulence caused by the impact force of inlet water is prevented from affecting the accuracy of a testing result; likewise, the backwater water flow guide plate designed on the backwater water tank section has the function of preventing the water flow disturbance at the water outlet from affecting the test result of the adjacent roller group. It can be understood that the multipurpose testing device has a smaller structure, and compared with the existing pool runway of about 10-50 meters, the water tank main body of the multipurpose testing device is only 3-4 meters long, so that the front roller group and the rear roller group for placing the electric-driven small-sized vehicle to be tested are very close to the water inlet and the water outlet, and in order to avoid the turbulence of water inlet and outlet from influencing the testing result, the multipurpose testing device is particularly designed with the structures of a water inlet flow guide plate, a horizontal arrangement water tank section, a backwater flow guide plate and the like.
According to the application, the bottom of the test area is provided with the water flow baffles which can move up and down, the water flow baffles are spliced to form a complete bottom, a water body is supported, and the water flow section can be changed by moving the water flow baffles up and down, namely, the depth of water flow is changed. The structural design can meet the test requirements of different electric drive small vehicles on different wading depths on one hand; on the other hand, the water flow speed can be changed by adjusting the water flow section under the condition of not changing the power of the water flow driving component of the multipurpose testing device; it will be appreciated that with the same water flow driving force, the smaller the water flow cross section the corresponding flow rate will increase. Thus, the set flow rate of the water flow in the test zone depends on two factors, namely the power of the water flow drive assembly and the water flow cross section.
The distance between the front roller group and the rear roller group of the multipurpose testing device is adjustable, so that the multipurpose testing device can meet the testing of electric driving small vehicles with different wheelbases, for example, the multipurpose testing device can be used for testing electric bicycles with different sizes, and certainly, for an electric balance car, only one of the front roller group or the rear roller group is required to be used for testing; meanwhile, in the front roller group and the rear roller group, the distance between the main roller and the auxiliary roller is also adjustable, so that the test of electric drive small vehicles with different tire sizes can be met. Therefore, the device disclosed by the application can be used for wading road tests of various electric driving small vehicles such as various electric balance vehicles, electric bicycles, scooters and the like.
It should be noted that, the multipurpose testing device of the application is provided with a water wheel transmission assembly on the main roller of the front roller group or the rear roller group, the water wheel is driven by water flow to rotate, and then the power is transmitted to the main roller by an even number of transmission gears. Wherein the even number of transmission gears comprise an input gear coaxial with the water wheel and a roller gear coaxial with the main roller, and the roller gear is actually an external gear arranged on the circumference of one end of the main roller. The structural design is used for providing power for the front roller group or the rear roller group so as to simulate the actual running condition of the electric drive small-sized vehicle; for example, for an electric bicycle, the drive of the electric bicycle is usually on the rear wheel, when the multipurpose testing device is adopted for testing, the rear wheel of the electric bicycle is placed on the rear roller group and can rotate freely, and the front wheel is not driven and cannot rotate; in consideration of the situation, the front roller group is provided with the water wheel transmission assembly, and the main rollers of the front roller group are driven to rotate by water flow, so that the front wheels of the electric bicycle are driven to rotate, and the normal running of the electric bicycle is simulated. Therefore, the hydraulic transmission assembly is mounted on the main roller of the roller group corresponding to the tire which is not driven, and is generally mounted on the main roller of the front roller group.
Preferably, a front main roller rotation counter is mounted on the front main roller of the front roller group for counting the rotation speed of the front main roller; the rear main roller rotation counter is arranged on the rear main roller of the rear roller group and is used for counting the rotation speed of the rear main roller.
It should be noted that the function of the front and rear main roller rotation counters is to calculate the rotation speeds of the two main rollers, and in principle, the rotation speeds of the two main rollers are consistent with the rotation speeds of the front and rear wheels of the electrically driven small-sized vehicle to be tested, and the normal running process can be better coordinated and simulated by calculating the rotation speeds of the two main rollers.
Preferably, an electric push rod is further installed at an end of the main roller driven by the water wheel for applying pressure to the corresponding main roller to reduce the rotational speed of the main roller.
It should be noted that, in the multipurpose testing device of the present application, the water wheel is driven to rotate by using the water flow as the power, the water wheel transmits the power to the main roller through the gear set composed of even number of independent gears, in one implementation mode of the present application, the diameter of the water wheel input gear is designed to be far larger than the diameter of the gear on the outer surface of the end part of the main roller, thus the rotating speed of the water flow can be obtained, and the rotating speed is obtained to be far larger than the required rotating speed, therefore, an electric push rod is designed in a further improvement scheme, the function of which is equivalent to a brake, and the main roller is decelerated; the braking force is controlled by controlling the extending degree of the electric push rod, so that the front main roller rotary counter and the rear main roller rotary counter are kept consistent, and the electric push rod and the two main roller rotary counters realize closed-loop control so as to ensure that the steering and the actual running of the front wheels of the vehicle are consistent; wherein the steering of the front wheels is determined by an even number of transmission gears.
Preferably, the specific mode of the electric push rod for reducing the rotation speed of the corresponding main roller is that a speed regulating wheel with a circular rubber outer layer is fixedly arranged at the end part of the main roller driven by the water wheel, and the speed regulating wheel does not rotate together with the main roller; the front part of the movable rod of the electric push rod is of a smooth semicircular structure matched with the outer circular rubber of the speed regulating wheel; when the speed regulating device is used, the electric push rod stretches out to provide pressure for the speed regulating wheel, so that the friction force between the speed regulating wheel and the main roller is enhanced, and speed reduction is realized.
Preferably, a water flow speed sensor is also installed in the test area of the water tank body and used for testing the water flow speed.
Preferably, in the multipurpose testing device, the water inlet and the water outlet are communicated outside the water tank body through pipelines, so that water circulation is realized.
The purpose of the water flow circulation is to save water, and the water simulation wading test is realized by adopting as little water as possible; it is understood that the water inlet and the water outlet can be directly communicated through a pipeline, and a water storage tank can be arranged between the water inlet and the water outlet, and the water storage tank are respectively communicated with the water storage tank. The water storage tank is arranged, so that on one hand, impact force of water inlet and water outlet can be avoided; on the other hand, the amount of water may be increased as needed, but of course, the water may be directly replenished into the tank main body as far as the amount of water is increased alone.
The application has the beneficial effects that:
the multipurpose testing device for wading test of the electric driven small-sized vehicles can meet the wading road testing requirements of various electric driven small-sized vehicles such as electric balance cars, electric bicycles, scooters and the like; and through structural designs such as intake rivers deflector, horizontal arrangement water tank section and return water rivers deflector for the rivers in water tank main part test area are more steady, thereby have ensured the accuracy of test.
Drawings
FIG. 1 is a schematic diagram of a multi-purpose testing device according to an embodiment of the present application;
fig. 2 is a schematic structural view of a water tank body of the multipurpose test device according to the embodiment of the present application;
FIG. 3 is a schematic view showing the structure of the inside of a tank body of the multipurpose test device according to the embodiment of the present application;
FIG. 4 is a schematic view of the structure of the front roller set and the rear roller set of the multipurpose test apparatus according to the embodiment of the present application;
FIG. 5 is a schematic view of a hydraulic transmission assembly of a multi-purpose testing device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electric push rod of the multipurpose test device according to an embodiment of the present application.
Detailed Description
The application is further illustrated by the following examples. The following examples are merely illustrative of the present application and should not be construed as limiting the application.
Examples
The multipurpose testing device for wading test of the electric-driven small-sized vehicle comprises a water tank main body 1, a front roller group 2, a rear roller group 3, a water wheel transmission assembly 4 and a water flow driving assembly 01 as shown in fig. 1 to 3; the water tank main body 1 is of a ship-shaped structure with two pointed ends, wherein one end is provided with a water inlet 5, and the other end is provided with a water outlet 6.
The water flow driving assembly 01 is used for providing power for water flow, so that the water flow enters the water inlet 5 and passes through the test area 13 of the water tank body 1 at a set flow rate, and the water pump is specifically adopted for driving. In the improvement of the embodiment, the water inlet 5 and the water outlet 6 are communicated outside the water tank main body 1 through pipelines, so that water circulation is realized, as shown in fig. 1. In fig. 1, the direction indicated by the arrow is the water flow direction.
The water tank main body 1 of the embodiment is sequentially divided into a water inlet water tank section 11, a horizontal arrangement water tank section 12, a test area 13 and a backwater water tank section 14 from a water inlet 5 to a water outlet 6 according to functions; the tank body 1 is integrally fixedly mounted on the base 15 as shown in fig. 2. The water inlet water tank section 11 is the frustum of a pyramid, and the water inlet 5 sets up in the little mouth end of frustum of a pyramid water inlet water tank section 11, uses water inlet 5 as the starting point, is provided with a plurality of and is the upright inflow rivers deflector 111 that fan-shaped was arranged in water inlet water tank section 11 for cut apart into a plurality of little stream of rivers of intaking to reduce the impact force of intaking, as shown in fig. 3.
The bottom of the horizontal finishing water tank section 12 is provided with a fixed horizontal water flow guide plate 121, the top is provided with a movable horizontal water flow guide plate 122, the fixed horizontal water flow guide plate 121 and the movable horizontal water flow guide plate 122 are horizontally arranged and are folded towards the center at one end towards the test area 13, the water flow is horizontally guided to the test area 13, and the water inlet is pressed towards the horizontal plane by adjusting the movable horizontal water flow guide plate 122. In this embodiment, the movable horizontal water flow guide plate 122 is fixed towards one end of the water inlet tank section 11, and the whole movable horizontal water flow guide plate can rotate up and down around the fixed end, and when rotating downwards, the movable horizontal water flow guide plate presses water flow to the water surface, so that the water body and the water surface flowing out of the horizontal water arrangement tank section are more stable; while turning upwards can accommodate levels of different heights as shown in fig. 3.
The test area 13 is used for placing an electrically driven small vehicle to be tested, as shown in fig. 2 and 3, which show a schematic diagram of a test of the electrodynamic balance car 00. The bottom of the test area 13 is provided with a plurality of water flow baffles 131 which can move up and down, and the water flow baffles 131 support the bottom of the water body and are used for adjusting the water flow cross section and the depth of the water flow, as shown in fig. 3. In the improvement of the embodiment, a water flow speed sensor 8 is also arranged in the test area 13 of the water tank body 1 and is used for testing the water flow speed.
The backwater water tank section 14 is in a pyramid shape, the water outlet 6 is arranged at the small opening end of the pyramid shape backwater water tank section 14, the water outlet 6 is taken as a starting point, a plurality of vertical backwater water flow guide plates 141 which are arranged in a fan shape are arranged in the backwater water tank section 14 and are used for dividing water flow into a plurality of small strands and converging the small strands at the water outlet 6, as shown in fig. 3.
The front roller set and the rear roller set are shown in fig. 4, wherein the front roller set 2 comprises a front main roller 21 and a front auxiliary roller 22, which are parallel to each other, the front main roller 21 has a rough surface, the front auxiliary roller 22 can move relative to the front main roller 21, and the distance between the front main roller 21 and the front auxiliary roller 22 is adjusted to adapt to different tyre sizes of electric-driven small vehicles to be tested; similarly, the rear roller group 3 includes a rear main roller 31 and a rear sub roller 32, which are parallel to each other, the rear main roller 31 has a rough surface, the rear sub roller 32 can move relative to the rear main roller 31, and the distance between the two rollers is adjusted to adapt to the tire size of different electrically-driven small vehicles to be tested.
The main roller and the auxiliary roller of the front roller group 2 are arranged on the side plate 24 of the front roller group and are fixedly arranged at one end of the testing area 13 of the water tank main body 1, which is close to the water inlet 5, and can move as a whole; the corresponding main roller and auxiliary roller of the rear roller group 3 are arranged on the side plate 34 of the rear roller group and are integrally and movably fixedly arranged at one end of the test area 13 of the water tank main body 1, which is close to the water outlet 6; during testing, the water flow moves along the length direction of the water tank main body 1, the front roller group 2 and the rear roller group 3 are parallel to each other, and the two roller groups are arranged in the vertical direction of the water flow; as shown in fig. 2 and 3. When the device is used, for a sample to be detected of the front wheel and the rear wheel, the distance between the front roller group and the rear roller group is adjusted to adapt to the distance between the front wheel and the rear wheel; and then the distance between the main roller and the auxiliary roller in the front roller group and the rear roller group is adjusted to adapt to the sizes of different tires.
The hydro-wheel transmission assembly 4 includes a hydro-wheel 41 and an even number of transmission gears 42, as shown in fig. 5, wherein the even number of transmission gears 42 includes a hydro-wheel input gear 421 coaxial with the hydro-wheel and a roller gear coaxial with the main roller, the roller gear being actually an external gear disposed on the circumference of one end of the main roller; in this example, the water wheel input gear 421 is meshed with the external gear on the front main roller 21 of the front roller group 2 through two transmission gears, as shown in fig. 2, 3 and 5. When the device is used, the blades of the water wheel 41 are deeply penetrated into water flow in the test area, the water wheel 41 is driven to rotate by the water flow, and then the main rollers of the front roller group 2 are rotated by the transmission gear 42. In the improvement of the present embodiment, an electric push rod 7 is further installed at the end of the main roller driven by the water wheel 41, as shown in fig. 5 and 6, for applying pressure to the corresponding main roller to reduce the rotation speed of the main roller; specifically, a flywheel 71 with a circular rubber outer layer is fixedly arranged at the end part of the main roller of the front roller group 2, and the flywheel 71 does not rotate together with the main roller; the front part of the movable rod of the electric push rod 7 is a smooth semicircular structure 72 matched with the outer circular rubber of the speed regulating wheel 71; in use, the electric push rod 7 extends out to provide pressure to the flywheel 71 through the semicircular structure 72, so that the friction force between the flywheel 71 and the main roller is enhanced, and the speed reduction is realized, as shown in fig. 6.
It should be noted that, taking fig. 1 as an example, when the multipurpose test device of this example is adopted to test an electric bicycle, only the rear wheel of the electric bicycle is driven, the front wheel is not driven, the rear wheel rotates anticlockwise during the test, water flows from left to right to drive the water wheel to rotate, and then the front wheel is driven by an even number of transmission gears to rotate anticlockwise, and the speed of the front wheel is controlled by the electric push rod through the main roller rotary counter of the front roller group and the rear roller group, so that the speed of the front wheel is consistent with that of the rear wheel. The two problems need to be paid attention to, and the diameter of the gear coaxial with the water wheel is larger than that of the gear coaxial with the main roller, so that the rotating speed of the front wheel is ensured to be larger than the water flow speed, and the speed of the front wheel and the speed of the rear wheel are conveniently coordinated through the electric push rod for deceleration; second, the transmission gears need to be even in number, so that the front wheel is guaranteed to rotate counterclockwise, and normal running of the electric bicycle is simulated.
As shown in fig. 4, the multipurpose test device of the present embodiment is provided with a front main roller rotation counter 23 mounted on the front main roller 21 of the front roller group 2 for counting the rotation speed of the front main roller 21; a rear main roller rotation counter 33 for counting the rotation speed of the rear main roller 31 is mounted on the rear main roller 31 of the rear roller group 3. During front and rear wheel test, the rotation speed of the front and rear roller sets is consistent through the coordinated control of the two rotation counters and the electric push rod, so that the normal running process of an electric bicycle is simulated.
The multipurpose testing device of the embodiment can be used for wading road tests of various electric drive small vehicles such as electric balance cars, electric bicycles, scooters and the like, and the testing process is very simple. Taking an electrodynamic balance car as an example, the test process is as follows:
1. the center distance between the main roller and the auxiliary roller of the roller group is adjusted to adapt to the size of the wheels of the tested sample;
2. injecting water of a required depth into the water tank body;
3. the test electrodynamic balance car is put into a pool, wheels are clamped between the main roller and the auxiliary roller of any roller group, the front face of the test electrodynamic balance car faces water flow, and the running of the electrodynamic balance car is controlled in a mode of controlling riding of personnel or other automatic riding devices;
4. the electric balance car is controlled to accelerate to a specified speed, and the control system automatically adjusts the power of the water pump to synchronize the water flow speed with the car speed;
5. the control system measures the driving distance by a rotary counter arranged on the movable roller;
6. and (5) finishing the test after the vehicle runs to the specified distance, and checking whether the balance car/electric vehicle is qualified according to the relevant standard.
The synchronous water flow speed and the vehicle speed are used for simulating the forward running condition of the electric balance vehicle in still water, and in the test of the example, the electric balance vehicle is stationary and only the tire of the electric balance vehicle rotates, so that water flows, and the relative movement of the electric balance vehicle and the water is realized; in order to better simulate the normal running of the electric balance car, it is necessary to ensure that the speed of water flow is consistent with the car speed, and when the electric balance car runs normally, as illustrated in fig. 1, water flow flows from left to right. The control system is a computer system and an electric power system for coordinately controlling all components according to real-time data of two main roller rotation counters and a water flow speed sensor; for example, when the water flow speed and the vehicle speed are controlled in a coordinated manner, the speed of the electric balance vehicle is calculated according to the main roller rotation counter of the roller group where the electric balance vehicle is located, and then the speed of the electric balance vehicle is compared with the water flow speed obtained by the water flow speed sensor, so that the power of the water pump is adjusted, and the water flow speed is consistent with the electric balance vehicle speed.
If the electric bicycle is tested, the water flow speed can be ensured to be consistent with the rotating speed of the rear wheel of the electric bicycle through the control method, and at the moment, the electric push rod is also required to be controlled in a coordinated manner, so that the rotating speed of the front wheel is ensured to be consistent with the rotating speed of the rear wheel; specifically, when the water flow speed is consistent with the rear wheel speed, the rotating speed of the front wheel is slightly higher than the water flow speed, namely, the rotating speed of the rear wheel according to the structural design of the transmission gear; therefore, the electric push rod needs to be controlled to brake the front wheel, so that the front wheel and the rear wheel rotate at the same speed, the braking force of the electric push rod is determined according to the main roller rotation counters of the roller groups where the front wheel and the rear wheel are positioned, and finally, the two main roller rotation counters are enabled to be consistent.
The multipurpose testing device of the example can provide stable testing water flow, although the water flow is used for simulating the advance of an electric-driven small-sized vehicle; however, the provided water flow is stable, the static water body is simulated to the greatest extent, and the small-sized vehicle is driven to move forwards by electricity, so that the test is more accurate.
The foregoing is a further detailed description of the application in connection with specific embodiments, and it is not intended that the application be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the application.
Claims (6)
1. A multipurpose testing arrangement for electric drive small-size vehicle wading test, its characterized in that: comprises a water tank main body (1), a front roller group (2), a rear roller group (3), a water wheel transmission component (4) and a water flow driving component (01);
the water tank main body (1) is of a ship-shaped structure with two pointed ends, one end of the water tank main body is provided with a water inlet (5), and the other end of the water tank main body is provided with a water outlet (6); the water tank main body (1) is sequentially divided into a water inlet water tank section (11), a horizontal arrangement water tank section (12), a test area (13) and a backwater water tank section (14) from a water inlet (5) to a water outlet (6) according to functions;
the water flow driving assembly (01) is used for providing power for water flow, so that the water flow enters the water inlet (5) and passes through the test area (13) at a set flow rate;
the water inlet water tank section (11) is in a pyramid shape, the water inlet (5) is arranged at the small opening end of the pyramid-shaped water inlet water tank section (11), the water inlet (5) is taken as a starting point, and a plurality of vertical water inlet water flow guide plates (111) which are arranged in a fan shape are arranged in the water inlet water tank section (11) and are used for dividing water inlet into a plurality of small strands of water flow;
the bottom of the horizontal arrangement water tank section (12) is provided with a fixed horizontal water flow guide plate (121), the top of the horizontal arrangement water tank section is provided with a movable horizontal water flow guide plate (122), the fixed horizontal water flow guide plate (121) and the movable horizontal water flow guide plate (122) are horizontally arranged, the fixed horizontal water flow guide plate and the movable horizontal water flow guide plate (122) are folded towards the center at one end of the test area (13), the water flow is horizontally guided to the test area (13), and inflow water is pressed to the horizontal plane by adjusting the movable horizontal water flow guide plate (122);
the testing area (13) is used for placing an electrically-driven small-sized vehicle to be tested, a plurality of water flow baffles (131) capable of moving up and down are arranged at the bottom of the testing area (13), and the water flow baffles (131) support the bottom of a water body and are used for adjusting the water flow section and the water flow depth;
the water return water tank section (14) is in a pyramid shape, the water outlet (6) is arranged at the small opening end of the pyramid-shaped water return water tank section (14), a plurality of upright water return water flow guide plates (141) which are arranged in a fan shape are arranged in the water return water tank section (14) by taking the water outlet (6) as a starting point, and the water return water flow guide plates are used for dividing water flow into a plurality of small strands and converging the small strands at the water outlet (6);
the front roller group (2) comprises a front main roller (21) and a front auxiliary roller (22), the front main roller (21) and the front auxiliary roller (22) are parallel to each other, the front main roller (21) has a rough surface, the front auxiliary roller (22) can move relative to the front main roller (21), and the distance between the front main roller and the front auxiliary roller is adjusted to adapt to different tyre sizes of electric-driven small vehicles to be tested;
likewise, the rear roller group (3) comprises a rear main roller (31) and a rear auxiliary roller (32), the rear main roller (31) and the rear auxiliary roller are parallel to each other, the surface of the rear main roller (31) is rough, the rear auxiliary roller (32) can move relative to the rear main roller (31), and the distance between the rear main roller and the rear auxiliary roller is adjusted to adapt to different tyre sizes of electric-driven small vehicles to be tested;
the front roller group (2) is fixedly arranged at one end of the test area (13) close to the water inlet (5) in an integrally movable manner, and the corresponding rear roller group (3) is fixedly arranged at one end of the test area (13) close to the water outlet (6) in an integrally movable manner; during testing, the water flow moves along the length direction of the water tank main body (1), the front roller group (2) and the rear roller group (3) are parallel to each other, and the two roller groups are arranged in the vertical direction of the water flow;
the water wheel transmission assembly (4) comprises a water wheel (41) and an even number of transmission gears (42), an output gear of the transmission gears (42) is meshed with a main roller of the front roller group (2) or the rear roller group (3), when the water wheel transmission assembly is used, blades of the water wheel (41) penetrate into water flow in a test area, the water wheel (41) is driven to rotate through the water flow, and the main roller of the front roller group (2) or the rear roller group (3) is driven to rotate through the transmission gears (42).
2. The multi-purpose testing device of claim 1, wherein: a front main roller rotation counter (23) is arranged on the front main roller (21) of the front roller group (2) and is used for counting the rotation speed of the front main roller (21); a rear main roller rotation counter (33) is mounted on the rear main roller (31) of the rear roller group (3) and is used for counting the rotation speed of the rear main roller (31).
3. The multi-purpose testing device of claim 2, wherein: the diameter of the water wheel input gear (421) coaxial with the water wheel (41) is larger than that of the gear on the outer surface of the end part of the main roller; an electric push rod (7) is also mounted at the end of the main roller driven by the water wheel (41) for applying pressure to the corresponding main roller to reduce the rotational speed of the main roller.
4. A multi-purpose testing device according to claim 3, wherein: the specific mode of the electric push rod (7) for reducing the rotation speed of the corresponding main roller is that a speed regulating wheel (71) with circular rubber on the outer layer is fixedly arranged at the end part of the main roller driven by the water wheel (41), and the speed regulating wheel (71) does not rotate together with the main roller; the front part of the movable rod of the electric push rod (7) is of a smooth semicircular structure matched with the outer circular rubber of the speed regulating wheel (71); when in use, the electric push rod (7) stretches out to provide pressure for the speed regulating wheel (71), so that the friction force between the speed regulating wheel (71) and the main roller is enhanced, and the speed reduction is realized.
5. The multipurpose test device of any one of claims 1-4, wherein: a water flow speed sensor (8) is also arranged in the test area (13) of the water tank main body (1) and is used for testing the water flow speed.
6. The multipurpose test device of any one of claims 1-4, wherein: the water inlet (5) and the water outlet (6) are communicated outside the water tank main body (1) through pipelines, so that water circulation is realized.
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| CN114264849B (en) * | 2021-12-22 | 2023-06-16 | 上海临港电力电子研究有限公司 | Adjustable testing device of power module and application method thereof |
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