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CN-122016348-A - Wheel impact test device for electric vehicle

CN122016348ACN 122016348 ACN122016348 ACN 122016348ACN-122016348-A

Abstract

The invention discloses a wheel impact test device for an electric vehicle, which relates to the technical field of vehicle tests and comprises a bottom plate, wherein a top plate is arranged above the bottom plate, two fixed side plates are symmetrically and fixedly connected between the bottom plate and the top plate, two guide sliding shafts are symmetrically arranged on two sides of the upper surface of the bottom plate, an impact plate is slidingly connected to the surface of the guide sliding shafts, an impact block is fixedly connected to the lower surface of the impact plate, a support frame is fixedly connected to the upper surface of the bottom plate, a test wheel is rotationally connected to the surface of the support frame, a mechanical anti-falling mechanism is arranged in the process of re-rising the impact block, and the limit is provided for the impact plate when unexpected occurrence of electric suction connection failure or sudden load disturbance and the like, so that the impact plate is prevented from falling out of control, the fatal risk of power failure, namely falling caused by reliance on a single lifting mechanism in the traditional design is eliminated, and vital mechanical protection is provided for the impact test process of the test wheel.

Inventors

  • CHEN LI

Assignees

  • 无锡晋明科技有限公司

Dates

Publication Date
20260512
Application Date
20260304

Claims (8)

  1. 1. The wheel impact test device for the electric vehicle comprises a bottom plate (1) and is characterized in that a top plate (12) is arranged above the bottom plate (1), two fixed side plates (11) are symmetrically and fixedly connected between the bottom plate (1) and the top plate (12), two guide sliding shafts (13) are symmetrically arranged on two sides of the upper surface of the bottom plate (1), an impact plate (14) is slidingly connected to the surface of the guide sliding shafts (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 bottom plate (1), and a test wheel (17) is rotatably connected to the surface of the support frame (16); The anti-falling device is characterized in that a driving mechanism for providing power for the impact mechanism is arranged above the impact plate (14), an anti-falling mechanism is arranged on the surface of the fixed side plate (11), an adjusting mechanism for adjusting the position of the anti-falling mechanism is arranged inside the fixed side plate (11), and a warning mechanism is arranged inside the anti-falling mechanism.
  2. 2. The wheel impact test device for the electric vehicle, according to claim 1, is characterized in that the driving mechanism comprises a power sliding plate (2) which is connected to the surface of a guide sliding shaft (13) in a sliding manner, an electric paying-off machine (21) is fixedly connected to the upper surface of the top plate (12), one end of a connecting wire of the electric paying-off machine (21) is connected with a lifting ring of the power sliding plate (2), an electric sucking disc (23) is fixedly connected to the lower surface of the power sliding 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 with the electric sucking disc (23).
  3. 3. The wheel impact test device for the electric vehicle, as set forth in claim 2, wherein the adjusting mechanism comprises two lateral guide grooves (31) symmetrically arranged on one side surface of the fixed side plate (11) close to the test wheel (17), the inside of the lateral guide groove (31) is slidably connected with a lateral guide block (32), one side of the lateral guide block (32) close to the test wheel (17) is fixedly connected with a connecting slide block (34), the inner wall of the lateral guide groove (31) is fixedly connected with a contact spring (33), and the contact spring (33) is fixedly connected with a similar lateral guide block (32).
  4. 4. The wheel impact test device for the electric vehicle, which is disclosed in claim 3, is characterized in that two sides of the power slide plate (2) are symmetrically and fixedly connected with two abutting shafts (3), one side, far away from the center line of the fixed side plate (11), of the upper end of the connecting slide block (34) is provided with an inclined plane, and the inclined plane of the connecting slide block (34) is positioned on the sliding path of the abutting shafts (3).
  5. 5. The wheel impact test device for the electric vehicle, according to claim 3, wherein the anti-falling mechanism comprises shrinkage grooves (4) symmetrically formed in two sides of the impact plate (14), extension clamping blocks (41) are slidably connected in the shrinkage grooves (4), shrinkage springs (42) are fixedly connected to the inner walls of the shrinkage grooves (4), the shrinkage springs (42) are fixedly connected with the extension clamping blocks (41), vertical guide grooves (43) are formed in one sides, close to the center line of the fixed side plate (11), of the connecting sliding blocks (34), vertical guide blocks (45) are slidably connected in the inner walls of the vertical guide grooves (43), vertical springs (44) are fixedly connected to the inner walls of the vertical guide grooves (43), central sliding blocks (46) are fixedly connected to one sides, close to the center line of the fixed side plate (11), of the central sliding blocks (46) are provided with a plurality of sealing blocks (47) in a linear array, vertical guide blocks (45) are fixedly connected to the inner walls of the vertical guide grooves (43), and a power mechanism (46) is arranged on one side, far from the upper side of the impact plate (14), and the power mechanism (46) is provided with a vertical guide groove.
  6. 6. The wheel impact test device for the electric vehicle according to claim 5, wherein the guiding mechanism comprises two bottom sliding grooves (5) symmetrically arranged on two sides of the upper surface of the bottom plate (1), an extension clamping groove (52) is formed in the inner wall of one side, close to the center line of the bottom plate (1), of the bottom sliding groove (5), an abutting shaft (51) is fixedly connected to the lower surface of the center sliding block (46), and the abutting shaft (51) extends to the inside of the similar bottom sliding groove (5).
  7. 7. The wheel impact test device for the electric vehicle according to claim 5, wherein the power mechanism comprises a transmission groove (6) formed in the inner wall above the vertical guide groove (43), a power toothed bar (62) is slidably connected in the transmission groove (6), the power toothed bar (62) is fixedly connected with the vertical guide block (45), a power gear (61) is rotatably connected in the transmission groove (6) through a rotating shaft, the power gear (61) is meshed with a toothed block on the surface of the power toothed bar (62), a connecting gear (63) is rotatably connected in the transmission groove (6) through the rotating shaft, and the connecting gear (63) is meshed with the power gear (61).
  8. 8. The wheel impact test device for the electric vehicle, according to claim 7, characterized in that the warning mechanism comprises a lifting groove (7) formed in the inner wall of one side of the transmission groove (6) far away from the test wheel (17), a swinging rod (71) is rotatably connected in the lifting groove (7) through a rotating shaft, a knocking hammer is arranged at the upper end of the swinging rod (71), an adjusting clamping groove (72) is formed in the surface of the swinging rod (71), a central clamping shaft (73) is fixedly connected to one side of the connecting gear (63) far away from the test wheel (17), the central clamping shaft (73) extends to the inner wall of the adjusting clamping groove (72), a bell (74) is fixedly connected to the inner wall above the lifting groove (7), and the bell (74) is located on the rotating path of the knocking hammer.

Description

Wheel impact test device for electric vehicle Technical Field The invention relates to the technical field of vehicle testing, in particular to a wheel impact test device for an electric vehicle. Background The wheel impact test device of the electric vehicle is specially designed for simulating and evaluating the structural integrity and safety of the wheel when the wheel is impacted by a road surface, a pendulum or drop hammer with specific mass is used for impacting a wheel assembly arranged on a simulated suspension from a preset height at a specified impact energy vertically or at a certain angle so as to reproduce the instantaneous impact load under extreme working conditions, and the conditions of deformation, crack generation, tire detachment from a rim, air pressure loss or structural failure and the like of the wheel are monitored in real time, so that whether the impact fatigue resistance, the material strength and the manufacturing process meet the safety standard and the durability requirement are verified. The fixture is accurately arranged on a simulation support consistent with the actual suspension geometric parameters of the vehicle, the impact hammer with set quality and height is lifted to a preset position and locked through a hydraulic or electric system, the impact hammer is released by the system to enable the impact hammer to freely fall or swing along a guide rail, the impact hammer impacts the rim edge area of the wheel at a standard included angle at a high speed, transient violent impact is simulated when the vehicle passes through an obstacle at a high speed, after the impact is finished, the system is automatically reset, and an operator immediately checks whether failure modes such as rim breakage, tire leakage, tire bead detachment and the like occur to the wheel so as to judge whether the impact resistance of the wheel of the electric vehicle meets the safety regulations and design requirements. In traditional design, the weight relies on the reliability of electronic, hydraulic pressure or mechanical hoist mechanism itself completely in the promotion in-process, in case transmission failure, disconnection appear, like electricity inhale suddenly lose electricity, part fatigue fracture or load sudden change, the weight will lose the restraint and fall out of control to carry out secondary to the below rim and strike, thereby influence test data, and can cause the hidden danger to observer safety. Disclosure of Invention Technical problem to be solved Aiming at the defects of the prior art, the invention provides a wheel impact test device for an electric vehicle, which solves the problems in the prior art. Technical proposal The wheel impact test device for the electric vehicle comprises a bottom plate, wherein a top plate is arranged above the bottom plate, two fixed side plates are symmetrically and fixedly connected between the bottom plate and the top plate, two guide sliding shafts are symmetrically arranged on two sides of the upper surface of the bottom plate, an impact plate is slidingly connected to the surface of the guide sliding shafts, an impact block is fixedly connected to the lower surface of the impact plate, a support frame is fixedly connected to the upper surface of the bottom plate, and a test wheel is rotatably connected to the surface of the support frame; The upper side of the impact plate is provided with a driving mechanism for providing power for the impact mechanism, the surface of the fixed side plate is provided with an anti-falling mechanism, the inside of the fixed side plate is provided with an adjusting mechanism for adjusting the position of the anti-falling mechanism, and the inside of the anti-falling mechanism is provided with a warning mechanism. Preferably, the driving mechanism comprises a power slide plate which is connected to the surface of the guide slide shaft in a sliding manner, an electric paying-off machine is fixedly connected to the upper surface of the top plate, one end of a connecting wire of the electric paying-off machine is connected with a lifting ring of the power slide plate, an electric sucking disc 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 in electromagnetic connection with the electric sucking disc. Preferably, the adjusting mechanism comprises two transverse guide grooves symmetrically formed in the surface of one side of the fixed side plate, which is close to the test wheel, the inside of each transverse guide groove is slidably connected with a transverse guide block, one side of each transverse guide block, which is close to the test wheel, is fixedly connected with a connecting sliding block, the inner wall of each transverse guide groove is fixedly connected with a contact spring, and the contact