Wheel impact test device for electric vehicle
By introducing a mechanical anti-fall and warning mechanism into the electric vehicle wheel impact testing device, the problem of uncontrolled hammer fall was solved, and the accuracy and safety of the test data were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- WUXI JINMING TECH CO LTD
- Filing Date
- 2026-03-04
- Publication Date
- 2026-05-12
Smart Images
Figure CN122016348A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vehicle testing technology, specifically to a wheel impact testing device for electric vehicles. Background Technology
[0002] The wheel impact test device for electric vehicles is a test device specifically designed to simulate and evaluate the structural integrity and safety of wheels when subjected to road impacts. It uses a pendulum or drop hammer with a specific mass to impact the wheel assembly mounted on a simulated suspension vertically or at a certain angle from a predetermined height with a specified impact energy, in order to reproduce the instantaneous impact load under extreme working conditions. By monitoring the wheel deformation, crack formation, tire detachment from the rim, air pressure loss, or structural failure in real time, it verifies whether the wheel's impact fatigue performance, material strength, and manufacturing process meet safety standards and durability requirements.
[0003] The impact hammer, precisely mounted on a simulated bracket with the same suspension geometry as the vehicle, is lifted to a predetermined position and locked via a hydraulic or electric system. The system then releases the impact hammer, allowing it to fall or swing freely along the guide rail, striking the edge of the wheel rim at a high speed at a standard angle. This simulates the transient and violent impact when a vehicle passes an obstacle at high speed. After the impact, the system automatically resets, and the operator immediately checks the wheel for failure modes such as rim breakage, tire leakage, or bead detachment to determine whether the impact resistance of the electric vehicle wheel meets safety regulations and design requirements.
[0004] In traditional designs, the lifting weight relies entirely on the reliability of the electric, hydraulic, or mechanical lifting mechanism itself during the lifting process. If transmission failure or connection failure occurs, such as a sudden loss of power to the electric suction device, fatigue fracture of components, or sudden change in load, the weight will lose its restraint and fall out of control, thus causing a secondary impact on the wheel rim below. This will affect the test data and pose a safety hazard to the observers. Summary of the Invention
[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a wheel impact testing device for electric vehicles, solving the problems mentioned in the background section.
[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a wheel impact testing device for electric vehicles, comprising a base plate, a top plate above the base plate, two fixed side plates symmetrically fixedly connected between the base plate and the top plate, two guide sliding shafts symmetrically arranged on both sides of the upper surface of the base plate, an impact plate slidably connected to the surface of the guide sliding shafts, an impact block fixedly connected to the lower surface of the impact plate, a support frame fixedly connected to the upper surface of the base plate, and a test wheel rotatably connected to the surface of the support frame; Above the impact plate is a drive mechanism that provides power to the impact mechanism. The surface of the fixed side plate is provided with a fall protection mechanism. Inside the fixed side plate is an adjustment mechanism for adjusting the position of the fall protection mechanism. Inside the fall protection mechanism is a warning mechanism.
[0007] Preferably, the driving mechanism includes a power slide plate slidably connected to the surface of the guide shaft, an electric wire feeding machine is fixedly connected to the upper surface of the top plate, one end of the electric wire feeding machine's connecting line is connected to the power slide plate's hanging ring, an electric suction cup is fixedly connected to the lower surface of the power slide plate, a top frame is fixedly connected to the upper surface of the impact plate, a contact iron block is fixedly connected to the upper surface of the top frame, and the contact iron block is electromagnetically connected to the electric suction cup.
[0008] Preferably, the adjustment mechanism includes two transverse guide grooves symmetrically opened on the surface of the fixed side plate near the test wheel. A transverse guide block is slidably connected inside the transverse guide groove. A connecting slider is fixedly connected to the transverse guide block near the test wheel. A contact spring is fixedly connected to the inner wall of the transverse guide groove. The contact spring is fixedly connected to the adjacent transverse guide block.
[0009] Preferably, two abutment shafts are symmetrically fixedly connected to both sides of the power slide plate, and the upper end of the connecting slider is set as an inclined surface on the side away from the center line of the fixed side plate, and the inclined surface of the connecting slider is located on the sliding path of the abutment shaft.
[0010] Preferably, the fall protection mechanism includes symmetrically arranged contraction grooves on both sides of the impact plate. An extension block is slidably connected inside the contraction groove. A contraction spring is fixedly connected to the inner wall of the contraction groove. The contraction spring is fixedly connected to the extension block. A vertical guide groove is provided on the side of the connecting slider near the center line of the fixed side plate. A vertical guide block is slidably connected inside the vertical guide groove. A vertical spring is fixedly connected to the inner wall of the vertical guide groove. The vertical guide block is fixedly connected to the vertical spring. A central slider is fixedly connected on the side of the vertical guide block near the center line of the fixed side plate. Multiple blocking blocks are arranged in a linear array on the side of the central slider near the impact plate. An inclined surface is provided on the upper side of the extension block away from the impact plate. A guide mechanism is provided below the central slider. A power mechanism is provided above the vertical guide groove.
[0011] Preferably, the guiding mechanism includes two bottom slide grooves symmetrically opened on both sides of the upper surface of the base plate. An extension slot is opened on the inner wall of the bottom slide groove near the center line of the base plate. An abutment shaft is fixedly connected to the lower surface of the central slider, and the abutment shaft extends into the interior of the adjacent bottom slide groove.
[0012] Preferably, the power mechanism includes a transmission groove formed on the inner wall above the vertical guide groove, a power rack slidably connected inside the transmission groove, the power rack being fixedly connected to the vertical guide block, a power gear being rotatably connected inside the transmission groove via a rotating shaft, the power gear meshing with the tooth blocks on the surface of the power rack, and a connecting gear being rotatably connected inside the transmission groove via a rotating shaft, the connecting gear meshing with the power gear.
[0013] Preferably, the warning mechanism includes a lifting groove formed on the inner wall of the transmission groove away from the test wheel. A swing rod is rotatably connected inside the lifting groove via a rotating shaft. A striking hammer is provided at the upper end of the swing rod. An adjustment slot is formed on the surface of the swing rod. A central locking shaft is fixedly connected to the connecting gear on the side away from the test wheel. The central locking shaft extends into the interior of the adjustment slot. A bell is fixedly connected to the inner wall above the lifting groove. The bell is located on the rotation path of the striking hammer.
[0014] Beneficial effects The wheel impact testing device for electric vehicles provided by this invention has the following beneficial effects: 1. A mechanical anti-fall mechanism is set up during the re-rise of the impact block. This mechanism can limit the impact plate in case of accidents such as failure of the electric suction connection or sudden load disturbance, thereby preventing it from falling out of control. This eliminates the fatal risk of falling immediately upon power failure caused by relying on a single lifting mechanism in traditional designs, and provides crucial mechanical redundancy protection for the impact test of the test wheel.
[0015] 2. When the impact plate falls, an alarm is immediately issued through a purely mechanical warning mechanism, realizing fault visualization and transforming safety accidents from passive handling to proactive early warning. The alarm is triggered by the impact of the fall, providing clear and unambiguous danger signals to on-site personnel at the moment of the accident. This not only immediately warns personnel to stay away from the danger zone, but also quickly guides maintenance personnel to investigate the problem. The proactive early warning mechanism significantly improves the level of human-machine interaction safety and risk prevention capabilities. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the present invention; Figure 3This is a schematic diagram of the impact plate connection structure of the present invention; Figure 4 This is a schematic diagram of the contact axis position structure of the present invention; Figure 5 This is a schematic diagram of the extended card block position structure of the present invention; Figure 6 This is a schematic diagram of the connecting slider connection structure of the present invention; Figure 7 For the present invention Figure 6 A magnified view of part A in the image; Figure 8 For the present invention Figure 6 A magnified view of part B in the image; Figure 9 This is a schematic diagram of the internal structure of the lifting groove of the present invention; Figure 10 This is a schematic diagram of the power gear connection structure of the present invention; Figure 11 This is a schematic diagram of the swing rod connection structure of the present invention.
[0017] The labels in the diagram represent: 1. Base plate; 11. Fixed side plate; 12. Top plate; 13. Guide slide shaft; 14. Impact plate; 15. Impact block; 16. Support frame; 17. Test wheel; 2. Power slide plate; 21. Electric wire feeding machine; 22. Top frame; 23. Electric suction cup; 24. Contact block; 3. Abutment shaft; 31. Lateral guide groove; 32. Lateral guide block; 33. Contact spring; 34. Connecting slider; 4. Retraction 41. Extension block; 42. Retraction spring; 43. Vertical guide groove; 44. Vertical spring; 45. Vertical guide block; 46. Center slider; 47. Sealing block; 5. Bottom slide groove; 51. Abutting shaft; 52. Extension groove; 6. Transmission groove; 61. Power gear; 62. Power rack; 63. Connecting gear; 7. Lifting groove; 71. Swing rod; 72. Adjusting groove; 73. Center shaft; 74. Bell. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] refer to Figures 1 to 11According to a preferred embodiment of the present invention, a wheel impact testing device for electric vehicles will be described in detail below, including a base plate 1, a top plate 12 disposed above the base plate 1, two fixed side plates 11 symmetrically fixedly connected between the base plate 1 and the top plate 12, two guide sliding shafts 13 symmetrically disposed on both sides of the upper surface of the base plate 1, an impact plate 14 slidably connected to the surface of the guide sliding shaft 13, a counterweight block bolted to the upper surface of the impact plate 14 to adjust the impact force of the impact plate 14 as it descends, an impact block 15 fixedly connected to the lower surface of the impact plate 14, a support frame 16 fixedly connected to the upper surface of the base plate 1, a test wheel 17 rotatably connected to the surface of the support frame 16, the test wheel 17 being located on the sliding path of the impact block 15 to ensure that the impact block 15 can accurately impact the test wheel 17; A drive mechanism is provided above the impact plate 14 to provide power to the impact mechanism. The position of the impact plate 14 is adjusted by the drive mechanism to realize the impact test of the impact plate 14 on the test wheel 17 each time. The surface of the fixed side plate 11 is provided with an anti-fall mechanism. The inside of the fixed side plate 11 is provided with an adjustment mechanism to adjust the position of the anti-fall mechanism. The position of the anti-fall mechanism is controlled by the adjustment mechanism to avoid the anti-fall mechanism from blocking the impact plate 14. When the drive mechanism drives the impact plate 14 to rise, it can effectively prevent the impact plate 14 from falling. The anti-fall mechanism is provided with a warning mechanism to alert the operator that the impact plate 14 may fall.
[0020] like Figure 1 and Figure 2 In the drive mechanism, there is a power slide plate 2 slidably connected to the surface of the guide slide shaft 13. An electric wire feeding machine 21 is fixedly connected to the upper surface of the top plate 12. One end of the electric wire feeding machine 21 is connected to the lifting ring of the power slide plate 2. The height of the power slide plate 2 is controlled by the wire feeding length of the electric wire feeding machine 21. An electric suction cup 23 is fixedly connected to the lower surface of the power slide plate 2. A top frame 22 is fixedly connected to the upper surface of the impact plate 14. A contact iron block 24 is fixedly connected to the upper surface of the top frame 22. The contact iron block 24 is electromagnetically connected to the electric suction cup 23. Initially, the power slide plate 2 is located at the upper end of the guide slide shaft 13. At this time, the contact iron block 24 and the electric suction cup 23 are connected, and the impact plate 14 located above is fixed by a mechanical pin.
[0021] When the test wheel 17 is subjected to an impact test, the test wheel 17 is placed on the surface of the support frame 16. When the test wheel 17 is impacted, the electric suction cup 23 releases the electromagnetic connection to the contact iron block 24, thereby releasing the restriction on the impact plate 14. At this time, the impact plate 14 falls down along the guide slide shaft 13 under its own weight, and drives the impact block 15 to slide down synchronously, thereby impacting the test wheel 17. When the test wheel 17 completes one impact test and a second impact test is required, the electric wire feeding machine 21 starts feeding wire, and the power slide plate 2 slides down synchronously with the wire length, which in turn drives the electric suction cup 23 to slide down synchronously until the electric suction cup 23 contacts the contact iron block 24. At this time, the electric suction cup 23 starts working again, which restores the connection between the contact iron block 24 and the electric suction cup 23. When the contact block 24 and the electric suction cup 23 are reconnected, the electric wire feeder 21 begins to reel in the wire, thereby driving the impact plate 14 to slide upward synchronously through the electric suction cup 23 until the power slide plate 2 slides to the top of the guide slide shaft 13, and the position of the impact plate 14 is re-restricted by the mechanical pin, thus facilitating subsequent impact testing.
[0022] like Figure 4 and Figure 5 The adjustment mechanism includes two symmetrically arranged transverse guide grooves 31 on the surface of the fixed side plate 11 near the test wheel 17. A transverse guide block 32 is slidably connected inside the transverse guide groove 31. A connecting slider 34 is fixedly connected to the side of the transverse guide block 32 near the test wheel 17. The transverse guide block 32 slides inside the transverse guide groove 31, thereby driving the connecting slider 34 to slide stably back and forth along the direction of the transverse guide groove 31. A contact spring 33 is fixedly connected to the inner wall of the transverse guide groove 31. The contact spring 33 is fixedly connected to the adjacent transverse guide block 32. The contact spring 33 is located on the side of the transverse guide block 32 near the center line of the fixed side plate 11, and the contact spring 33 applies elastic force to the transverse guide block 32. Initially, the transverse guide block 32 is located inside the side of the transverse guide groove 31 away from the center line of the fixed side plate 11, and the contact spring 33 is in its normal state.
[0023] like Figure 4 In the middle, two abutment shafts 3 are symmetrically fixedly connected to both sides of the power slide plate 2. The upper end of the connecting slider 34 is set as an inclined surface on the side away from the center line of the fixed side plate 11. The inclined surface of the connecting slider 34 is located on the sliding path of the abutment shaft 3. Initially, the abutment shaft 3 is located above the connecting slider 34, and the abutment shaft 3 does not contact the connecting slider 34.
[0024] When the electric wire feeding machine 21 starts feeding wire, the power slide plate 2 slides down synchronously with the wire feeding length. The abutment shaft 3 slides down synchronously under the drive of the power slide plate 2, and the abutment shaft 3 gives a push force to the inclined surface of the connecting slider 34, thereby pushing the two connecting sliders 34 located on the same side to move closer to each other. like Figure 5 and Figure 7In the middle, the fall protection mechanism includes symmetrically arranged contraction grooves 4 on both sides of the impact plate 14. An extension block 41 is slidably connected inside the contraction groove 4. A contraction spring 42 is fixedly connected to the inner wall of the contraction groove 4. The contraction spring 42 is fixedly connected to the extension block 41. Vertical guide grooves 43 are opened on the side of the connecting slider 34 near the center line of the fixed side plate 11. Vertical guide blocks 45 are slidably connected inside the vertical guide grooves 43. A vertical spring 44 is fixedly connected to the inner wall of the vertical guide grooves 43. The vertical guide blocks 45 are fixedly connected to the vertical springs 44. The vertical springs 44 are located below the vertical guide blocks 45, and the vertical springs 44 apply elastic force to the vertical guide blocks 45. A central slider 46 is fixedly connected to the side of the vertical guide block 45 near the center line of the fixed side plate 11. The vertical guide block 45 slides inside the vertical guide groove 43, thereby driving the central slider 46 to slide up and down synchronously along the vertical guide groove 43. Multiple blocking blocks 47 are arranged in a linear array on the side of the central slider 46 near the impact plate 14. An inclined surface is provided on the upper side of the extension block 41 away from the impact plate 14. A guide mechanism is provided below the central slider 46, and a power mechanism is provided above the vertical guide groove 43. Initially, the blocking blocks 47 are not located on the sliding path of the extension block 41, and the blocking blocks 47 are located on both sides of the extension block 41.
[0025] The guiding mechanism includes two bottom slide grooves 5 symmetrically opened on both sides of the upper surface of the base plate 1. An extension slot 52 is opened on the inner wall of the bottom slide groove 5 near the center line of the base plate 1. The lower surface of the center slider 46 is fixedly connected to an abutment shaft 51. The abutment shaft 51 extends into the interior of the adjacent bottom slide groove 5. The position of the center slider 46 is restricted by the bottom slide groove 5 and the extension slot 52. Initially, the abutment shaft 51 is located inside the bottom slide groove 5 on the side away from the center line of the base plate 1. When the two connecting sliders 34 come closer to each other, they drive the two central sliders 46 to slide synchronously, which in turn drives the blocking block 47 to slide onto the sliding path of the extension block 41. When the contact block 24 and the electric suction cup 23 are reconnected, the electric wire feeding machine 21 begins to reel in the wire. As the impact plate 14 slides upward with the power slide plate 2, the impact plate 14 drives the extension block 41 to slide upward. During the upward sliding of the extension block 41, the inclined surface of the extension block 41 contacts the blocking block 47. Under the restriction of the blocking block 47, the extension block 41 retracts into the inside of the shrinking groove 4. At this time, the shrinking spring 42 is compressed under the push of the extension block 41. When the gap between the extension block 41 and the adjacent blocking block 47 is aligned, the extension block 41 extends into the gap between the adjacent blocking blocks 47 under the push of the shrinking spring 42. As the impact plate 14 continues to slide upward, the extension block 41 will repeat the shrinking process. When the power slide plate 2 drives the impact plate 14 to slide smoothly to the top via the electric suction cup 23, the impact plate 14 stops sliding, effectively extending the locking block 41 out of the sealing block 47, and the position of the impact plate 14 is re-restricted by the mechanical pin. When the power slide plate 2 drives the impact plate 14 to slide upward via the electric suction cup 23, and the electric suction cup 23 experiences a circuit failure, the connection between the contact block 24 and the electric suction cup 23 fails, the blocking block 47 will provide a block for the extension block 41, and the impact plate 14 will push the center slider 46 to slide downward synchronously by giving the blocking block 47 a push. At this time, the vertical spring 44 provides a buffer for the center slider 46, and the vertical spring 44 is compressed under the push of the vertical guide block 45. At this time, the abutment shaft 51 slides downward along the extension slot 52 under the push of the center slider 46, thereby limiting the position of the center slider 46. A mechanical anti-fall mechanism is set up during the re-rise of the impact block 15. This mechanism can limit the impact plate 14 in case of accidents such as failure of the electric suction connection or sudden load disturbance, thereby preventing it from falling out of control. This eliminates the fatal risk of falling immediately upon power failure caused by relying on a single lifting mechanism in traditional designs, and provides crucial mechanical redundancy protection for the impact test process of the test wheel 17.
[0026] like Figure 7 In this structure, the power mechanism includes a transmission groove 6 located on the inner wall above the vertical guide groove 43. A power rack 62 is slidably connected inside the transmission groove 6 and is fixedly connected to the vertical guide block 45. A power gear 61 is rotatably connected inside the transmission groove 6 via a rotating shaft. The power gear 61 meshes with the toothed blocks on the surface of the power rack 62. A connecting gear 63 is rotatably connected inside the transmission groove 6 via a rotating shaft. The connecting gear 63 meshes with the power gear 61. The radius of the connecting gear 63 is smaller than the radius of the power gear 61. One rotation of the power gear 61 drives the connecting gear 63 to rotate multiple times, thereby providing sufficient power to the warning mechanism.
[0027] like Figure 10 and Figure 11 In the process, the warning mechanism includes a lifting groove 7 opened on the inner wall of the transmission groove 6 away from the test wheel 17. The inside of the lifting groove 7 is rotatably connected to a swing rod 71 via a rotating shaft. A striking hammer is provided at the upper end of the swing rod 71. An adjustment slot 72 is opened on the surface of the swing rod 71. A central locking shaft 73 is fixedly connected to the connecting gear 63 on the side away from the test wheel 17. The central locking shaft 73 extends into the inside of the adjustment slot 72. A bell 74 is fixedly connected to the upper inner wall of the lifting groove 7. The bell 74 is located on the rotation path of the striking hammer. Initially, the central locking shaft 73 is located inside the upper end of the adjustment slot 72. At this time, the swing rod 71 is in a vertical state. As the vertical guide block 45 slides downwards following the central slider 46, it drives the power rack 62 to slide downwards synchronously. The surface tooth block drives the power gear 61 to rotate, which in turn drives the connecting gear 63 to rotate synchronously. During the rotation of the connecting gear 63, the central locking shaft 73 provides a thrust to the inner wall of the adjusting slot 72 away from the fixed side plate 11, thereby pushing the swing rod 71 closer to the bell 74 until the swing rod 71 collides with the bell 74, thus emitting an alarm sound. At this time, the central locking shaft 73 is located in the middle of the adjusting slot 72. As the connecting gear 63 continues to rotate, the central locking shaft 73 contacts the inner wall of the side closer to the adjusting slot 72, thus pushing the swing rod 71 back until the central locking shaft 73 reaches the upper end of the adjusting slot 72. At this time, the swing rod 71 becomes horizontal again. This process is repeated through the continuous rotation of the connecting gear 63. The swing rod 71 swings back and forth under the drive of the central locking shaft 73, thereby striking the bell 74 back and forth with the hammer, thus emitting an alarm. When the impact plate 14 falls, an alarm is immediately issued through a purely mechanical warning mechanism, realizing fault visualization and transforming the safety accident from passive handling to proactive early warning. The alarm is triggered by the falling impact, which can provide clear and unambiguous danger signals to the personnel on site at the moment the accident occurs. This can not only immediately warn personnel to stay away from the danger area, but also quickly guide maintenance personnel to investigate the problem. The proactive early warning mechanism significantly improves the level of human-machine interaction safety and risk prevention capabilities.
[0028] Working principle: When the electric wire feeding machine 21 starts feeding wire, the power slide 2 slides down synchronously with the wire feeding length. The abutment shaft 3 slides down synchronously under the drive of the power slide 2, and the abutment shaft 3 gives a thrust to the inclined surface of the connecting slider 34, thereby pushing the two connecting sliders 34 located on the same side to move closer to each other. When the two connecting sliders 34 come closer to each other, they drive the two central sliders 46 to slide synchronously, which in turn drives the blocking block 47 to slide onto the sliding path of the extension block 41. When the contact block 24 and the electric suction cup 23 are reconnected, the electric wire feeding machine 21 begins to reel in the wire. As the impact plate 14 slides upward with the power slide plate 2, the impact plate 14 drives the extension block 41 to slide upward. During the upward sliding of the extension block 41, the inclined surface of the extension block 41 contacts the blocking block 47. Under the restriction of the blocking block 47, the extension block 41 retracts into the inside of the shrinking groove 4. At this time, the shrinking spring 42 is compressed under the push of the extension block 41. When the gap between the extension block 41 and the adjacent blocking block 47 is aligned, the extension block 41 extends into the gap between the adjacent blocking blocks 47 under the push of the shrinking spring 42. As the impact plate 14 continues to slide upward, the extension block 41 will repeat the shrinking process. When the power slide plate 2 drives the impact plate 14 to slide smoothly to the top via the electric suction cup 23, the impact plate 14 stops sliding, effectively extending the locking block 41 out of the sealing block 47, and the position of the impact plate 14 is re-restricted by the mechanical pin. When the power slide plate 2 drives the impact plate 14 to slide upward via the electric suction cup 23, and the electric suction cup 23 experiences a circuit failure, the connection between the contact block 24 and the electric suction cup 23 fails, the blocking block 47 will provide a block for the extension block 41, and the impact plate 14 will push the center slider 46 to slide downward synchronously by giving the blocking block 47 a push. At this time, the vertical spring 44 provides a buffer for the center slider 46, and the vertical spring 44 is compressed under the push of the vertical guide block 45. At this time, the abutment shaft 51 slides downward along the extension slot 52 under the push of the center slider 46, thereby limiting the position of the center slider 46. A mechanical anti-fall mechanism is set up during the re-rise of the impact block 15. This mechanism can limit the impact plate 14 in case of accidents such as failure of the electric suction connection or sudden load disturbance, thereby preventing it from falling out of control. This eliminates the fatal risk of falling immediately upon power failure caused by relying on a single lifting mechanism in traditional designs, and provides crucial mechanical redundancy protection for the impact test process of the test wheel 17.
[0029] As the vertical guide block 45 slides downwards following the central slider 46, it drives the power rack 62 to slide downwards synchronously. The surface tooth block drives the power gear 61 to rotate, which in turn drives the connecting gear 63 to rotate synchronously. During the rotation of the connecting gear 63, the central locking shaft 73 provides a thrust to the inner wall of the adjusting slot 72 away from the fixed side plate 11, thereby pushing the swing rod 71 closer to the bell 74 until the swing rod 71 collides with the bell 74, thus emitting an alarm sound. At this time, the central locking shaft 73 is located in the middle of the adjusting slot 72. As the connecting gear 63 continues to rotate, the central locking shaft 73 contacts the inner wall of the side closer to the adjusting slot 72, thus pushing the swing rod 71 back until the central locking shaft 73 reaches the upper end of the adjusting slot 72. At this time, the swing rod 71 becomes horizontal again. This process is repeated through the continuous rotation of the connecting gear 63. The swing rod 71 swings back and forth under the drive of the central locking shaft 73, thereby striking the bell 74 back and forth with the hammer, thus emitting an alarm. When the impact plate 14 falls, an alarm is immediately issued through a purely mechanical warning mechanism, realizing fault visualization and transforming the safety accident from passive handling to proactive early warning. The alarm is triggered by the falling impact, which can provide clear and unambiguous danger signals to the personnel on site at the moment the accident occurs. This can not only immediately warn personnel to stay away from the danger area, but also quickly guide maintenance personnel to investigate the problem. The proactive early warning mechanism significantly improves the level of human-machine interaction safety and risk prevention capabilities.
Claims
1. A wheel impact testing device for electric vehicles, comprising a base plate (1), characterized in that: A top plate (12) is provided above the base plate (1). Two fixed side plates (11) are symmetrically fixed between the base plate (1) and the top plate (12). Two guide slide shafts (13) are symmetrically provided on both sides of the upper surface of the base plate (1). An impact plate (14) is slidably connected to the surface of the guide slide shaft (13). An impact block (15) is fixedly connected to the lower surface of the impact plate (14). A support frame (16) is fixedly connected to the upper surface of the base plate (1). A test wheel (17) is rotatably connected to the surface of the support frame (16). A drive mechanism that provides power to the impact mechanism is provided above the impact plate (14), a fall protection mechanism is provided on the surface of the fixed side plate (11), an adjustment mechanism for adjusting the position of the fall protection mechanism is provided inside the fixed side plate (11), and a warning mechanism is provided inside the fall protection mechanism.
2. The wheel impact testing device for electric vehicles according to claim 1, characterized in that: The driving mechanism includes a power slide plate (2) slidably connected to the surface of the guide slide shaft (13), an electric wire feeding machine (21) is fixedly connected to the upper surface of the top plate (12), one end of the electric wire feeding machine (21) is connected to the lifting ring of the power slide plate (2), an electric suction cup (23) is fixedly connected to the lower surface of the power slide plate (2), a top frame (22) is fixedly connected to the upper surface of the impact plate (14), a contact iron block (24) is fixedly connected to the upper surface of the top frame (22), and the contact iron block (24) is electromagnetically connected to the electric suction cup (23).
3. The wheel impact testing device for electric vehicles according to claim 2, characterized in that: The adjustment mechanism includes two transverse guide grooves (31) symmetrically opened on the surface of the fixed side plate (11) near the test wheel (17). A transverse guide block (32) is slidably connected inside the transverse guide groove (31). A connecting slider (34) is fixedly connected to the transverse guide block (32) near the test wheel (17). A contact spring (33) is fixedly connected to the inner wall of the transverse guide groove (31). The contact spring (33) is fixedly connected to the adjacent transverse guide block (32).
4. The wheel impact testing device for electric vehicles according to claim 3, characterized in that: The power slide (2) has two abutment shafts (3) symmetrically fixedly connected on both sides. The upper end of the connecting slider (34) away from the center line of the fixed side plate (11) is set as an inclined surface. The inclined surface of the connecting slider (34) is located on the sliding path of the abutment shaft (3).
5. The wheel impact testing device for electric vehicles according to claim 3, characterized in that: The fall arrestor includes symmetrically arranged contraction grooves (4) on both sides of the impact plate (14). An extension block (41) is slidably connected inside the contraction groove (4). A contraction spring (42) is fixedly connected to the inner wall of the contraction groove (4). The contraction spring (42) is fixedly connected to the extension block (41). A vertical guide groove (43) is provided on the side of the connecting slider (34) near the center line of the fixed side plate (11). A vertical guide block (45) is slidably connected inside the vertical guide groove (43). The inner wall of the vertical guide groove (43) is fixedly connected to the extension block (41). A vertical spring (44) is connected to the vertical guide block (45), which is fixedly connected to the vertical spring (44). A central slider (46) is fixedly connected to the side of the vertical guide block (45) near the center line of the fixed side plate (11). Multiple blocking blocks (47) are arranged in a linear array on the side of the central slider (46) near the impact plate (14). An inclined surface is provided on the upper side of the extension block (41) away from the impact plate (14). A guide mechanism is provided below the central slider (46), and a power mechanism is provided above the vertical guide groove (43).
6. The wheel impact testing device for electric vehicles according to claim 5, characterized in that: The guiding mechanism includes two bottom grooves (5) symmetrically opened on both sides of the upper surface of the base plate (1). The inner wall of the bottom groove (5) near the center line of the base plate (1) is provided with an extension slot (52). The lower surface of the central slider (46) is fixedly connected with an abutment shaft (51), which extends into the interior of the adjacent bottom groove (5).
7. The wheel impact testing device for electric vehicles according to claim 5, characterized in that: The power mechanism includes a transmission groove (6) formed on the inner wall above the vertical guide groove (43). A power rack (62) is slidably connected inside the transmission groove (6). The power rack (62) is fixedly connected to the vertical guide block (45). A power gear (61) is rotatably connected inside the transmission groove (6) via a rotating shaft. The power gear (61) meshes with the tooth blocks on the surface of the power rack (62). A connecting gear (63) is rotatably connected inside the transmission groove (6) via a rotating shaft. The connecting gear (63) meshes with the power gear (61).
8. The wheel impact testing device for electric vehicles according to claim 7, characterized in that: The warning mechanism includes a lifting groove (7) on the inner wall of the transmission groove (6) away from the test wheel (17). The inside of the lifting groove (7) is rotatably connected to a swing rod (71) via a rotating shaft. A striking hammer is provided at the upper end of the swing rod (71). An adjustment slot (72) is provided on the surface of the swing rod (71). A central locking shaft (73) is fixedly connected to the connecting gear (63) on the side away from the test wheel (17). The central locking shaft (73) extends into the interior of the adjustment slot (72). A bell (74) is fixedly connected to the inner wall above the lifting groove (7). The bell (74) is located on the rotation path of the striking hammer.