New energy automobile bottom scraping test device

Abstract

The invention relates to the technical field of automobile testing, and discloses a new energy automobile bottom scraping testing device which comprises a testing base and an obstacle for simulating bottom scraping, a connecting column is connected to the bottom of the obstacle, a lifting sliding groove is formed in the top of the testing base, and the connecting column is in sliding connection with the lifting sliding groove. A connecting column is arranged on the top of the testing base, a lifting assembly for driving the connecting column to move up and down is arranged in the testing base, a measuring part for measuring the height of the obstacle is further arranged on the top of the testing base, and the measuring part is detachably connected with the testing base. And the height of the obstacle can be known before the test is started or after the test is finished, and the height of the obstacle can be adjusted to the height meeting the test value according to the wear degree of the top surface of the obstacle.

Description

Technical Field

[0001] This invention relates to an automotive testing device, and more particularly to a device for testing the undercarriage scraping of new energy vehicles. Background Technology

[0002] The undercarriage scraping test for new energy vehicles simulates a collision scenario where the vehicle's underside encounters a protruding obstacle (such as a rock or curb) while driving, focusing on evaluating the safety of the battery pack and chassis structure. Most existing testing methods use a solid metal hemisphere to simulate the protruding obstacle, fixed to the ground. The car drives towards the hemisphere at a specified speed, and the quality of the undercarriage is judged by observing the condition of the undercarriage after the scrape.

[0003] The test regulations require that the vertical overlap between the highest point of the raised obstacle and the bottom of the base plate be 30mm to 36mm. The existing raised obstacles themselves cannot be directly adjusted in height, so various sizes of obstacles need to be provided on site, and then suitable obstacles are selected for testing according to the chassis height of the vehicle under test.

[0004] During the test, the contact surface between the obstacle and the car chassis will experience severe scraping and friction. After multiple tests, the height of the obstacle will change and may not reach the originally recorded height. Due to the high precision requirement of the unit of overlap, the tester may not be able to observe the actual height of the obstacle with the naked eye, which may result in the overlap being lower than the test requirements, leading to inaccurate test results.

[0005] Therefore, there is a need for a new energy vehicle undercarriage scraping test device that can quickly measure the actual height of obstacles and adjust the height of obstacles. Summary of the Invention

[0006] Therefore, the present invention provides a new energy vehicle bottom scraping test device to solve the above-mentioned technical problems.

[0007] The technical solution of this invention is implemented as follows: This invention provides a new energy vehicle undercarriage scraping test device, including a test base and an obstacle for simulating undercarriage scraping. The bottom of the obstacle is connected to a connecting column, and the top of the test base is provided with a lifting slide groove. The connecting column is slidably connected to the lifting slide groove. The test base is provided with a lifting component that drives the connecting column to move up and down. The top of the test base is also provided with a measuring component for measuring the height of the obstacle. The measuring component is detachably connected to the test base.

[0008] Preferably, the lifting assembly includes a drive screw and a drive pulley. The test base has an adjustment cavity inside, and the lifting slide communicates with the adjustment cavity. The drive screw is located inside the adjustment cavity, and the bottom end of the drive screw is rotatably connected to the inner wall of the adjustment cavity. The bottom center of the connecting column has a threaded groove, and the connecting column is threadedly connected to the drive screw through the threaded groove. The drive pulley is located below the connecting column and is fixedly sleeved on the outer circumferential wall of the drive screw. The adjustment cavity also has a power component that drives the drive pulley to rotate.

[0009] Preferably, the power component includes a drive pulley, a drive shaft, and a power mechanism for driving the drive shaft to rotate. The bottom end of the drive shaft is rotatably connected to the inner wall of the adjustment cavity. The drive pulley is fixedly sleeved on the outer circumferential wall of the drive shaft. The drive pulley is connected to the drive pulley via a transmission belt. The drive shaft is connected to the power mechanism.

[0010] Preferably, the power mechanism includes a drive motor and a battery. The drive motor is installed at the top inside the adjustment cavity, and the output shaft of the drive motor is coaxially connected to the drive shaft. The battery is installed inside the adjustment cavity and is electrically connected to the drive motor.

[0011] Preferably, the measuring component includes a measuring plate and several guide slide rods. The tail of the guide slide rod is provided with an external thread. The top of the test base is provided with a threaded groove that is threadedly connected to the guide slide rod. The measuring plate is provided with a sliding groove that is slidably connected to the guide slide rod. The measuring plate is slidably sleeved on the guide slide rod. The bottom of the measuring plate abuts against the top of the obstacle. The circumferential sidewall of the guide slide rod is provided with a scale bar that displays the height.

[0012] Preferably, the power mechanism includes an operating lever, the top of the test base has a groove communicating with the inside of the adjustment cavity, the top of the drive shaft has a insertion slot that engages with the operating lever, the operating lever passes through the groove and engages with the insertion slot, and the drive shaft is rotated by rotating the operating lever.

[0013] Preferably, the bottom center of the operating lever is provided with a square connector, and the connector slot is a square slot that matches the connector. The operating lever is engaged with the drive shaft through the connector and the connector slot.

[0014] Preferably, the operating lever is a cylindrical lever, the groove is a cylindrical slot that matches the operating lever, and the horizontal cross-sectional area of ​​the connector is smaller than the horizontal cross-sectional area of ​​the operating lever.

[0015] Preferably, an operating handwheel is also installed on the top of the operating lever.

[0016] Preferably, the top of the test base is also provided with a dust cover to cover the groove, and one end of the dust cover is hinged to the test base.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a new energy vehicle undercarriage scraping test device. Before the test, the lifting component moves the obstacle vertically up and down in the lifting chute. The measuring component can visually show the current vertical height of the obstacle. Combined with the chassis height of the vehicle under test, the obstacle is adjusted to a height that meets the test value. Then, the measuring component is removed from the test base, leaving only the obstacle part on the top of the test base to ensure that the obstacle can contact the vehicle chassis. This test device can not only adjust the height of the obstacle for vehicles with different chassis heights, but also know the height of the obstacle before or after the test and adjust it to a height that meets the test value according to the wear degree of the top surface of the obstacle. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the test base in Embodiment 1 of the present invention; Figure 2 This is a side sectional view of the test base in Embodiment 1 of the present invention; Figure 3 This is a side sectional view of the test base after the obstacle height adjustment is completed in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the test base in Embodiment 2 of the present invention; Figure 5 This is a side sectional view of the test base in Embodiment 2 of the present invention; Figure 6 This is a partial cross-sectional view of the adjustment cavity in Embodiment 2 of the present invention; Figure 7 This is a side sectional view of the test base after the obstacle height adjustment is completed in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the power component in Embodiment 2 of the present invention.

[0020] In the diagram, 1. Test lane; 2. Test base; 3. Obstacle; 4. Connecting column; 5. Lifting slide; 6. Drive screw; 7. Drive pulley; 8. Adjustment chamber; 9. Active pulley; 10. Drive shaft; 11. Drive motor; 13. Measuring plate; 14. Guide slide; 15. Threaded groove; 16. Scale bar; 17. Operating lever; 18. Groove; 19. Plug slot; 20. Plug connector; 21. Operating handwheel; 22. Dust cover. Detailed Implementation

[0021] To better understand the technical content of this invention, specific embodiments are provided below, and the invention will be further described in conjunction with the accompanying drawings.

[0022] Example 1 See Figures 1 to 3 This invention provides a new energy vehicle undercarriage scraping test device, including a test base 2 fixed in a test lane 1 and a hemispherical obstacle 3 for simulating undercarriage scraping. The bottom of the obstacle 3 is connected to a connecting column 4, and the top of the test base 2 is provided with a lifting slide 5. The connecting column 4 is slidably connected to the lifting slide 5. The test base 2 is provided with a lifting component inside to drive the connecting column 4 to move up and down. The top of the test base 2 is also provided with a measuring component for measuring the height of the obstacle 3. The measuring component is detachably connected to the test base 2.

[0023] Before testing, the test base 2, which includes the entire test component, is fixed in the test lane 1. The top of the test base 2 is flush with the lane surface. The obstacle 3 is vertically raised and lowered within the lifting chute 5 by the lifting component. The measuring component is placed against the top of the obstacle 3, allowing a direct view of its current vertical height. Combined with the chassis height of the vehicle under test, the obstacle 3 is adjusted to a height that meets the test values. The measuring component is then removed from the test base 2, leaving only the obstacle 3 portion on top of the test base 2. This ensures that the obstacle 3 can contact the vehicle chassis. The length of the test base 2 can be set to be less than the distance between the left and right wheels of the vehicle, so that during the test, the tires do not press on the test base 2; only the chassis contacts the obstacle 3 on the test base 2. This can, to some extent, improve the service life of the test base 2.

[0024] This testing device can not only adjust the height of obstacle 3 for vehicles with different chassis heights, but also know the height of obstacle 3 before or after the test, and adjust it to a height that meets the test value according to the wear degree of the top surface of obstacle 3.

[0025] The lifting assembly includes a drive screw 6 and a drive pulley 7. The test base 2 has an adjustment cavity 8 inside. The lifting slide 5 communicates with the adjustment cavity 8. The drive screw 6 is located inside the adjustment cavity 8. The bottom end of the drive screw 6 is rotatably connected to the inner wall of the adjustment cavity 8. The bottom center of the connecting column 4 has a threaded groove 15. The connecting column 4 is threadedly connected to the drive screw 6 through the threaded groove 15. The drive pulley 7 is located below the connecting column 4. The drive pulley 7 is fixedly sleeved on the outer circumference of the drive screw 6. The adjustment cavity 8 also has a power component that drives the drive pulley 7 to rotate.

[0026] The power component includes a drive pulley 9, a drive shaft 10, and a power mechanism that drives the drive shaft 10 to rotate. The bottom end of the drive shaft 10 is rotatably connected to the inner wall of the adjustment cavity 8. The drive pulley 9 is fixedly sleeved on the outer circumference of the drive shaft 10. The drive pulley 9 is connected to the drive pulley 7 via a transmission belt. The drive shaft 10 is connected to the power mechanism.

[0027] The power mechanism includes a drive motor 11 and a battery. The drive motor 11 is installed at the top inside the adjustment cavity 8. The output shaft of the drive motor 11 is coaxially connected to the drive shaft 10. The battery is installed inside the adjustment cavity 8 and is electrically connected to the drive motor 11. The charging port of the battery can be opened on the side wall or top of the test base 2. There is no need to remove the battery. The test base 2 can be removed from the test lane 1 and the battery can be charged by connecting the charging line to the charging port.

[0028] When the height of obstacle 3 needs to be adjusted, the drive motor 11 is started to drive the drive shaft 10 and the drive pulley 9 to rotate coaxially. The drive pulley 9 drives the drive pulley 7 to rotate synchronously through the transmission belt. The drive pulley 7 drives the drive screw 6 to rotate. Under the action of the threaded connection, the connecting column 4 moves up or down along the lifting slide 5. Compared with the structure of simple threaded rotation and lifting, when obstacle 3 scrapes against the car chassis, there may be external force that causes obstacle 3 to rotate, which will cause the height of obstacle 3 to change during the test and affect the test results. The horizontal cross-section of the connecting column 4 and the lifting slide 5 of this application is rectangular. The lifting of the connecting column 4 can only be driven by the rotation of the lifting screw, so that when the car scrapes against obstacle 3 during the test, the height of obstacle 3 will not change, thus improving the accuracy of the test data.

[0029] At the same time, the scraping will exert a large downward pressure on the obstacle 3. In this application, the drive motor 11 is located on one side of the drive screw 6. The drive screw 6 is driven by the active pulley 9 and the drive pulley 7. The pressure exerted by the obstacle 3 on the drive screw 6 will not be applied to the drive motor 11, which greatly reduces the wear of the drive motor 11 and extends the service life of the drive motor 11.

[0030] The measuring component includes a measuring plate 13 and several guide slide rods 14. The tail of the guide slide rod 14 is provided with an external thread. The top of the test base 2 is provided with a threaded groove 15 that is threadedly connected to the guide slide rod 14. The measuring plate 13 is provided with a sliding groove that is slidably connected to the guide slide rod 14. The measuring plate 13 is slidably sleeved on the guide slide rod 14. The bottom of the measuring plate 13 abuts against the top of the obstacle 3. The circumferential sidewall of the guide slide rod 14 is provided with a scale bar 16 for displaying height. The 0 mark line of the scale bar 16 is flush with the top surface of the test lane 1.

[0031] The guide slide rods 14 can be configured in two sets, one on the left and one on the right, installed on the top of the test base 2, and also located on the left and right sides of the obstacle 3. After the measuring plate 13 is placed on the guide slide rods 14, the measuring plate 13 will slide downwards under the action of gravity until the bottom of the measuring plate 13 abuts against the top of the obstacle 3. By using the bottom edge of the measuring plate 13 in conjunction with the scale strip 16 on the side wall of the guide slide rod 14, the current height of the obstacle 3 above the ground can be clearly determined. Similarly, the guide slide rods 14 can also be configured in four sets, distributed in a U-shape.

[0032] Example 2 See Figures 4 to 8 The difference between this embodiment and Embodiment 1 is that the power mechanism includes an operating lever 17, the top of the test base 2 has a groove 18 communicating with the inside of the adjustment cavity 8, and the top of the drive shaft 10 has a insertion slot 19 that engages with the operating lever 17. The operating lever 17 passes through the groove 18 and engages with the insertion slot 19. By rotating the operating lever 17, the drive shaft 10 is driven to rotate.

[0033] The bottom center of the operating lever 17 is provided with a square connector 20, and the connector groove 19 is a square groove that matches the connector 20. The operating lever 17 is engaged with the drive shaft 10 through the connector 20 and the connector groove 19.

[0034] This embodiment employs a purely mechanical power mechanism without electrical components, reducing the probability of failure and eliminating the need to consider the power source. In use, the operator first inserts the operating lever 17 into the groove 18, ensuring the bottom end of the lever 17 abuts against the top of the drive shaft 10. By rotating the operating lever 17, the connector 20 aligns with the insertion slot 19. Further rotation of the operating lever 17 will then drive the drive shaft 10 to rotate, thereby adjusting the height of the obstacle 3. After adjustment, the operating lever 17 is removed, and the car undercarriage scraping test can begin.

[0035] The operating lever 17 is a cylindrical lever, and the groove 18 is a cylindrical groove that matches the operating lever 17. The contact surface between the groove 18 and the operating lever 17 is a smooth wall surface. The cylindrical groove guides the operating lever 17, allowing it to more quickly abut against the top of the drive shaft 10. The horizontal cross-sectional area of ​​the connector 20 is smaller than that of the operating lever 17. By rotating the operating lever 17, the orientation of the connector 20 can be adjusted, allowing the connector 20 to quickly align with the connector groove 19.

[0036] The top of the operating lever 17 is also equipped with an operating handwheel 21, which facilitates the rotation of the operating lever 17.

[0037] The top of the test base 2 is also provided with a dust cover 22 to cover the groove 18. One end of the dust cover 22 is hinged to the test base 2. The dust cover 22 can be set as a horizontal rotating hinge or a vertical flip-top hinge. The dust cover 22 provides a certain degree of protection for the groove 18 and prevents foreign objects from entering the adjustment cavity 8.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A new energy vehicle bottom scraping test device, characterized in that, The test base includes a test base and an obstacle for simulating scraping the bottom. The bottom of the obstacle is connected to a connecting column, and the top of the test base has a lifting groove. The connecting column is slidably connected to the lifting groove. The test base has a lifting assembly inside that drives the connecting column to move up and down. The top of the test base also has a measuring component for measuring the height of the obstacle. The measuring component is detachably connected to the test base.

2. The new energy vehicle bottom scraping test device according to claim 1, characterized in that, The lifting assembly includes a drive screw and a drive pulley. The test base has an adjustment cavity inside, and the lifting slide communicates with the adjustment cavity. The drive screw is located inside the adjustment cavity, and the bottom end of the drive screw is rotatably connected to the inner wall of the adjustment cavity. The bottom center of the connecting column has a threaded groove, and the connecting column is threadedly connected to the drive screw through the threaded groove. The drive pulley is located below the connecting column and is fixedly sleeved on the outer circumferential wall of the drive screw. The adjustment cavity also has a power component that drives the drive pulley to rotate.

3. The new energy vehicle bottom scraping test device according to claim 2, characterized in that, The power component includes a drive pulley, a drive shaft, and a power mechanism that drives the drive shaft to rotate. The bottom end of the drive shaft is rotatably connected to the inner wall of the adjustment cavity. The drive pulley is fixedly sleeved on the outer circumference of the drive shaft. The drive pulley is connected to the drive pulley via a transmission belt. The drive shaft is connected to the power mechanism.

4. The new energy vehicle bottom scraping test device according to claim 3, characterized in that, The power mechanism includes a drive motor and a battery. The drive motor is installed at the top inside the adjustment cavity, and the output shaft of the drive motor is coaxially connected to the drive shaft. The battery is installed inside the adjustment cavity and is electrically connected to the drive motor.

5. The new energy vehicle bottom scraping test device according to claim 1, characterized in that, The measuring component includes a measuring plate and several guide slide rods. The tail of the guide slide rod is provided with an external thread. The top of the test base is provided with a threaded groove that is threadedly connected to the guide slide rod. The measuring plate is provided with a sliding groove that is slidably connected to the guide slide rod. The measuring plate is slidably sleeved on the guide slide rod. The bottom of the measuring plate abuts against the top of the obstacle. The circumferential sidewall of the guide slide rod is provided with a scale bar that displays the height.

6. The new energy vehicle bottom scraping test device according to claim 3, characterized in that, The power mechanism includes an operating lever. The top of the test base has a groove that communicates with the inside of the adjustment cavity. The top of the drive shaft has a insertion slot that engages with the operating lever. The operating lever passes through the groove and engages with the insertion slot. Rotating the operating lever drives the drive shaft to rotate.

7. The new energy vehicle bottom scraping test device according to claim 6, characterized in that, The bottom center of the operating lever is provided with a square connector, and the connector slot is a square slot that matches the connector. The operating lever is engaged with the drive shaft through the connector and the connector slot.

8. The new energy vehicle bottom scraping test device according to claim 7, characterized in that, The operating lever is a cylindrical lever, the groove is a cylindrical slot that matches the operating lever, and the horizontal cross-sectional area of ​​the connector is smaller than the horizontal cross-sectional area of ​​the operating lever.

9. A new energy vehicle bottom scraping test device according to claim 8, characterized in that, An operating handwheel is also installed on the top of the operating lever.

10. A new energy vehicle bottom scraping test device according to claim 1, characterized in that, The test base is also provided with a dust cover on top to cover the groove, and one end of the dust cover is hinged to the test base.

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