Automobile electronic fan vibration testing device

Abstract

The invention discloses an automobile electronic fan vibration testing device, and the device comprises a supporting structure which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a pedestal, and the upper end of the pedestal is fixedly connected with a plurality of supporting columns; the test structure comprises a rectangular cover fixedly connected to the upper end of the base, the upper end of the rectangular cover extends into the test notch, an electronic fan is placed in the test notch, and a vibration test unit connected with the electronic fan is arranged in the rectangular cover; the fan conveying structure comprises a stand column fixedly connected to the upper end of the bottom plate, a hydraulic rod is fixedly connected to the upper end of the stand column, and a vertical strip-shaped opening is formed in the side wall of the stand column. According to the invention, great manual intervention is not needed, and the testing efficiency and the man-machine safety are greatly improved; a first spring, a second spring, a third spring, a multi-stage sliding block, a connecting rod and a spherical block mechanism are adopted, and a multi-point vibration sensor is matched, so that two-stage vibration isolation and distributed measurement are realized, and the precision and the signal-to-noise ratio of test data are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fan vibration testing, and in particular to a vibration testing device for an automotive electronic fan. Background Art

[0002] With the continuous improvement of automobile electronics, the vibration performance of the electronic fan in the automobile cooling system directly affects the comfort, safety and reliability of the entire vehicle. Currently, the vibration test of automobile electronic fans mainly relies on the following methods: 1. Manual loading and unloading combined with universal vibration table testing Traditional laboratories mostly use general-purpose vibration test benches to perform vibration tests on electronic fans. The loading and unloading processes are completed manually, and reliability and repeatability are difficult to guarantee, and the test efficiency is low.

[0003] 2. Simple fixture positioning Some test fixtures only achieve fan positioning through fixed fixtures or "T" slots, lacking elastic support and multi-point sensing. This makes the test results easily affected by clamping stiffness and local stress concentration, making it difficult to obtain comprehensive vibration characteristics.

[0004] 3. Single point or single stage spring support In the existing technology, a few dedicated test benches use a single spring or rigid support to isolate the input of the vibration table to the test piece, but their vibration isolation performance and test accuracy are limited, and they cannot meet the increasingly stringent vibration consistency requirements of the entire vehicle.

[0005] 4. Separate multi-point measurement and data acquisition Although modern vibration test systems support multi-channel data acquisition, their sensor layout is often scattered across the test bench surface, making it difficult to combine with sophisticated fixture structures. Loading and unloading are also mostly performed by robots or manually, lacking an integrated automated testing process.

[0006] It can be seen that the existing technology has deficiencies in the following aspects: Insufficient automation: Loading and unloading and testing are separated, resulting in low efficiency and prone to errors; Insufficient positioning accuracy: Simple fixtures cannot accommodate different fan shapes and installation requirements; Insufficient test accuracy: Single-level support and single-point measurement make it difficult to capture multi-modal and multi-directional vibration characteristics; Low integration: Testing, power supply, data acquisition, and loading and unloading are all done separately, making it difficult to achieve closed-loop integration.

[0007] Therefore, there is a need for an automotive electronic fan vibration test device that can achieve high-precision, multi-point, multi-modal vibration testing and has automatic loading and unloading and integrated control functions to meet the needs of vehicle reliability testing and mass production consistency verification. Summary of the Invention

[0008] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0009] In view of the above problems existing in the existing automotive electronic fan vibration testing device, the present invention is proposed.

[0010] Therefore, the purpose of the present invention is to provide an automotive electronic fan vibration test device, which does not require human intervention, greatly improving test efficiency and human-machine safety; in conjunction with multi-point vibration sensors, it realizes two-level vibration isolation and distributed measurement, significantly improving the accuracy and signal-to-noise ratio of test data.

[0011] To solve the above technical problems, the present invention provides the following technical solutions: a vibration test device for an automotive electronic fan, comprising: A support structure comprising a bottom plate, an upper end of the bottom plate being fixedly connected to a base, an upper end of the base being fixedly connected to a plurality of support columns, and upper ends of the plurality of support columns being fixedly connected to the same top plate, an upper end of the top plate being provided with a test slot; A test structure comprising a rectangular cover fixedly connected to the upper end of the base, wherein the upper end of the rectangular cover extends into a test slot, wherein an electronic fan is placed in the test slot, and a vibration test unit connected to the electronic fan is provided in the rectangular cover; The fan conveying structure includes a column fixedly connected to the upper end of the base plate, the upper end of the column is fixedly connected to a hydraulic rod, a vertical strip opening is provided on the side wall of the column, a movable plate connected to the piston end of the hydraulic rod is movably connected in the strip opening, a horizontal plate is fixedly connected to the side wall of the movable plate, a rectangular opening is provided at the upper end of the horizontal plate, and a mounting plate is rotatably connected in the rectangular opening, an adsorption and fixing unit connected to the electronic fan is provided on the mounting plate, and an auxiliary steering unit connected to the mounting plate is provided on the upper end of the top plate to assist in loading and unloading of the electronic fan.

[0012] As a preferred solution of the automotive electronic fan vibration testing device described in the present invention, the vibration testing unit includes multiple first springs fixedly connected to the upper end of the base, the upper ends of the first springs are fixedly connected to a cylinder, and the upper ends of the multiple cylinders are fixedly connected to the same test bench, the upper end of the test bench is evenly distributed with test components corresponding to the cylinders, and the electronic fans are placed correspondingly on the upper sides of the multiple test components.

[0013] As a preferred solution of the automobile electronic fan vibration testing device described in the present invention, the test component includes three strip grooves opened on the upper end of the test bench, and one end of the three strip grooves is connected to form a circular groove, a slider is slidably connected in the strip groove, and the slider is fixedly connected to the inner wall of the strip groove by a second spring, the upper end of the slider is provided with a groove, a movable block is slidably connected in the groove, a third spring is fixedly connected between the movable block and the inner wall of the groove, the upper end of the movable block is fixedly connected to a connecting rod inclined upward, and the ends of the three connecting rods away from the movable block are fixedly connected to a spherical block, the upper end of the spherical block is provided with a placement groove, and the electronic fan is correspondingly placed between the multiple placement grooves.

[0014] As a preferred solution of the automotive electronic fan vibration testing device described in the present invention, vibration sensors are respectively provided at the first spring, the second spring and the third spring, and the multiple vibration sensors are respectively connected to an external computer, and a power supply interface and a battery connected to the electronic fan are provided in the rectangular cover.

[0015] As a preferred solution of the automotive electronic fan vibration testing device described in the present invention, a rotating shaft is fixedly connected to the side wall of the mounting plate, the rotating shaft is rotatably connected to the side wall of the horizontal plate, and one end of the rotating shaft away from the mounting plate extends to the outside of the horizontal plate and is connected to the auxiliary steering unit.

[0016] As a preferred solution of the automotive electronic fan vibration testing device described in the present invention, the adsorption and fixing unit includes a miniature vacuum pump fixedly connected to the side wall of the mounting plate, the output end of the miniature vacuum pump is connected to multiple vacuum hoses, and a vacuum suction cup connected to the vacuum hose is provided on the side wall of the mounting plate. In the initial stage of the mounting plate, the vacuum suction cup is set upward and adsorbed and connected to the side wall of the electronic fan.

[0017] As a preferred solution of the automotive electronic fan vibration testing device described in the present invention, a plurality of L-shaped limit blocks are fixedly connected to the side wall of the mounting plate, and the L-shaped limit blocks are correspondingly arranged on one side of the vacuum suction cup and are in contact with and connected to the outer shell of the electronic fan to play a limiting role. After the electronic fan is limited, it can correspond to the placement groove position on the spherical block after turning.

[0018] As a preferred solution of the automotive electronic fan vibration testing device described in the present invention, the auxiliary steering unit includes a strip trough body fixedly connected to the upper end of the top plate, a vertical rack plate is fixedly connected to the inner wall of the strip trough body, and one end of the rotating shaft extends into the strip trough body and is fixedly sleeved with a cylindrical gear that engages with the rack plate.

[0019] As a preferred solution of the automotive electronic fan vibration testing device described in the present invention, a controller connected to a hydraulic rod and a micro vacuum pump is provided on the base plate, and the controller controls the mounting plate to achieve a 180° turn during the up and down reciprocating movement and complete the loading and unloading of the electronic fan.

[0020] As a preferred embodiment of the automotive electronic fan vibration test device of the present invention, the testing method of the automotive electronic fan vibration test device includes the following steps: Step 1: Place the electronic fan to be tested on the vacuum suction cup of the mounting plate and turn on the micro vacuum pump to complete the adsorption and fixation. The L-shaped limit block ensures the accurate position of the electronic fan. Step 2: Start the hydraulic rod to make the movable plate move vertically downward. At the same time, the cylindrical gear on the outer side of the rotating shaft engages with the rack plate and rotates. After rotating to 180 degrees, the electronic fan is moved and the micro vacuum pump is turned off to allow the electronic fan to fall between the multiple placement slots. Connect the electronic fan to the power interface and start it; Step 3: During the test, multiple vibration sensors are used to transmit data to a computer for analysis and storage. The triangular arrangement of the test components enables two-level vibration data testing, improving data accuracy. Step 4: After the test is completed, disconnect the electronic fan from the power supply and start the micro vacuum pump to adsorb the electronic fan again. With the cooperation of the hydraulic rod and the auxiliary steering unit, the electronic fan is restored to its initial position and easy to unload to replace the next electronic fan for reciprocating testing.

[0021] The beneficial effects of the present invention are: BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them: Figure 1 The figure is a schematic diagram of the overall structure of the automotive electronic fan vibration test device of the present invention.

[0023] Figure 2 The figure is a side structural diagram of the automotive electronic fan vibration test device of the present invention.

[0024] Figure 3 This is a schematic structural diagram of the automotive electronic fan vibration test device of the present invention when the electronic fan is removed.

[0025] Figure 4The figure is a bottom view structural diagram of the automotive electronic fan vibration test device of the present invention.

[0026] Figure 5 This is a schematic diagram of the bottom view of the rectangular cover of the automotive electronic fan vibration test device of the present invention.

[0027] Figure 6 The figure is a schematic diagram of the test component structure of the automotive electronic fan vibration test device of the present invention.

[0028] Figure 7 for Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0032] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0033] Reference Figure 1-Figure 7 , provides an automotive electronic fan vibration test device, comprising: The support structure 100, the test structure 200, and the fan conveying structure 300 are provided. The support structure 100 includes a bottom plate 101, the upper end of the bottom plate 101 is fixedly connected to a base 102, the upper end of the base 102 is fixedly connected to a plurality of support columns 103, and the upper ends of the plurality of support columns 103 are fixedly connected to the same top plate 104. The upper end of the top plate 104 is provided with a test slot. Among them, the test structure 200 includes a rectangular cover 201 fixedly connected to the upper end of the base 102, and the upper end of the rectangular cover 201 extends into the test slot, an electronic fan 202 is placed in the test slot, and a vibration test unit connected to the electronic fan 202 is provided in the rectangular cover 201; specifically, the vibration test unit includes a plurality of first springs 203 fixedly connected to the upper end of the base 102, the upper end of the first spring 203 is fixedly connected to a cylinder 204, and the upper ends of the plurality of cylinders 204 are fixedly connected to the same test table 205, the upper end of the test table 205 is evenly distributed with test components corresponding to the cylinders 204, and the electronic fans 202 are placed correspondingly on the upper sides of the plurality of test components The test assembly includes three strip grooves opened on the upper end of the test table 205, and one end of the three strip grooves is connected to form a circular groove, a slider 206 is slidably connected in the strip groove, and the slider 206 is fixedly connected to the inner wall of the strip groove by a second spring 207. A groove is opened at the upper end of the slider 206, and a movable block 208 is slidably connected in the groove. A third spring 209 is fixedly connected between the movable block 208 and the inner wall of the groove. The upper end of the movable block 208 is fixedly connected to a connecting rod 210 inclined upward, and the three connecting rods 210 are fixedly connected to one end away from the movable block with a spherical block 211. A placement groove is opened at the upper end of the spherical block 211, and the electronic fan 202 is placed correspondingly between the multiple placement grooves.

[0034] Furthermore, vibration sensors are respectively provided at the first spring 203, the second spring 207 and the third spring 209, and the multiple vibration sensors are respectively connected to an external computer. A power interface and a battery connected to the electronic fan 202 are provided in the rectangular cover 201. The above-mentioned data acquisition and power supply processes are all existing technologies and will not be repeated here.

[0035] The following table shows a set of simulated vibration test data, collected using a triangular arrangement of three sensors and a multi-stage spring support structure. The data includes the root mean square (RMS) acceleration and corresponding displacement amplitude of the three sensors during a frequency sweep, facilitating subsequent analysis of vibration characteristics under different modes.

[0036]

[0037] Among them: Frequency scanning range: 10Hz~100Hz, step 10Hz, corresponding to the vibration response of the fan under different working conditions.

[0038] RMS acceleration: reflects the vibration intensity at each frequency point. The data from the three sensors should be basically consistent, verifying the symmetry of the device and the uniform measurement capability of the triangular arrangement.

[0039] Displacement amplitude: Calculated by integrating the acceleration signal, it is used to evaluate the maximum displacement of the mechanical structure at resonance and verify the vibration isolation performance of multi-stage springs.

[0040] Specifically, the fan conveying structure 300 includes a column 301 fixedly connected to the upper end of the base plate 101, and the upper end of the column 301 is fixedly connected to a hydraulic rod 302. A vertical strip opening is provided on the side wall of the column 301, and a movable plate 303 connected to the piston end of the hydraulic rod 302 is movably connected in the strip opening. A horizontal plate 304 is fixedly connected to the side wall of the movable plate 303, and a rectangular opening is provided at the upper end of the horizontal plate 304, and a mounting plate 305 is rotatably connected in the rectangular opening. The mounting plate 305 is provided with an adsorption and fixing unit connected to the electronic fan 202, and the upper end of the top plate 104 is provided with an auxiliary steering unit connected to the mounting plate 305 to assist in the loading and unloading of the electronic fan.

[0041] Among them, a rotating shaft 306 is fixedly connected to the side wall of the mounting plate 305, and the rotating shaft 306 is rotatably connected to the side wall of the horizontal plate 304, and the end of the rotating shaft 304 away from the mounting plate 305 extends to the outside of the horizontal plate 304 and is connected to the auxiliary steering unit. The adsorption and fixing unit includes a micro vacuum pump 307 fixedly connected to the side wall of the mounting plate 305, and the output end of the micro vacuum pump 307 is connected to a plurality of vacuum hoses 308. A vacuum suction cup 309 connected to the vacuum hose 308 is provided on the side wall of the mounting plate 305. In the initial stage of the mounting plate 305, the vacuum suction cup 309 is set upward and adsorbed and connected to the side wall of the electronic fan 202. Specifically, a plurality of L-shaped limit blocks 310 are fixedly connected to the side wall of the mounting plate 305, and the L-shaped limit blocks 310 are correspondingly provided. It is placed on one side of the vacuum suction cup 309 and is in contact with and connected to the outer shell of the electronic fan 202 to play a limiting role. After the electronic fan 202 is limited, it can correspond to the placement slot position on the spherical block 211 after turning. The auxiliary steering unit includes a strip groove body 311 fixedly connected to the upper end of the top plate 104, and a vertical rack plate 312 is fixedly connected to the inner wall of the strip groove body 311. One end of the rotating shaft 306 extends into the strip groove body 311 and is fixedly sleeved with a cylindrical gear 313 that engages with the rack plate 312. A controller connected to the hydraulic rod 302 and the micro vacuum pump 307 is provided on the bottom plate 101, and the controller controls the mounting plate 305 to achieve 180° steering during the up and down reciprocating movement and complete the loading and unloading of the electronic fan 202.

[0042] The test method of the automotive electronic fan vibration test device includes the following steps: Step 1: Place the electronic fan 202 to be tested on the vacuum suction cup 309 of the mounting plate 305 and start the micro vacuum pump 307 to complete the adsorption and fixation. The L-shaped limit block 310 ensures the accurate position of the electronic fan 202. Step 2: Activate the hydraulic lever 302, causing the movable plate 303 to move vertically downward. Simultaneously, the cylindrical gear 313 on the outer side of the rotating shaft 306 engages with the rack plate 312, causing rotation. After the electronic fan 202 rotates to 180°, the movement is completed and the micro vacuum pump 307 is turned off, allowing the electronic fan 202 to fall between the multiple placement slots. Connect the electronic fan 202 to the power interface and start it. Step 3: During the test, multiple vibration sensors are used to transmit data to a computer for analysis and storage. The triangular arrangement of the test components enables two-level vibration data testing, improving data accuracy. Step 4: After the test is completed, disconnect the electronic fan 202 from the power supply and then start the micro vacuum pump 307 to adsorb the electronic fan 202 again. With the cooperation of the hydraulic rod 302 and the auxiliary steering unit, the electronic fan 202 is restored to its initial position and convenient for unloading to replace the next electronic fan 202 for reciprocating testing.

[0043] Through the hydraulic rod-driven moving plate and auxiliary steering unit, combined with the vacuum adsorption module, the electronic fan can be automatically loaded and unloaded and flipped 180 degrees without the need for significant human intervention, greatly improving test efficiency and human-machine safety; the first, second, and third springs and multi-stage sliders, connecting rods and spherical block mechanisms are used, in conjunction with multi-point vibration sensors, to achieve two-stage vibration isolation and distributed measurement, significantly improving the accuracy and signal-to-noise ratio of test data; the device of the present invention not only overcomes the automation and precision shortcomings of the existing technology, but also has significant advantages in test efficiency, data reliability and compatibility, and can meet the high standards required for batch testing and R&D verification of modern automotive electronic fans.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A vibration test device for automotive electronic fans, characterized in that: include: A support structure (100) comprising a bottom plate (101), the upper end of the bottom plate (101) being fixedly connected to a base (102), the upper end of the base (102) being fixedly connected to a plurality of support columns (103), and the upper ends of the plurality of support columns (103) being fixedly connected to the same top plate (104), the upper end of the top plate (104) being provided with a test notch; A test structure (200) comprising a rectangular cover (201) fixedly connected to the upper end of the base (102), wherein the upper end of the rectangular cover (201) extends into a test slot, an electronic fan (202) is placed in the test slot, and a vibration test unit connected to the electronic fan (202) is provided in the rectangular cover (201); A fan conveying structure (300) comprises a column (301) fixedly connected to the upper end of a base plate (101), the upper end of the column (301) being fixedly connected to a hydraulic rod (302), a side wall of the column (301) being provided with a vertical strip opening, a movable plate (303) connected to the piston end of the hydraulic rod (302) being movably connected in the strip opening, a transverse plate (304) being fixedly connected to the side wall of the movable plate (303), a rectangular opening being provided at the upper end of the transverse plate (304), and a mounting plate (305) being rotatably connected in the rectangular opening, an adsorption fixing unit connected to the electronic fan (202) being provided on the mounting plate (305), and an auxiliary steering unit connected to the mounting plate (305) being provided at the upper end of the top plate (104) to assist in loading and unloading of the electronic fan.

2. The automotive electronic fan vibration test device according to claim 1, characterized in that: The vibration test unit comprises a plurality of first springs (203) fixedly connected to the upper end of the base (102); the upper end of the first spring (203) is fixedly connected to a cylinder (204); the upper ends of the plurality of cylinders (204) are fixedly connected to the same test bench (205); the upper end of the test bench (205) is evenly provided with test assemblies corresponding to the cylinders (204); and the electronic fan (202) is correspondingly placed on the upper side of the plurality of test assemblies.

3. The automotive electronic fan vibration test device according to claim 2, characterized in that: The test assembly comprises three strip grooves opened at the upper end of the test bench (205), and one end of the three strip grooves is connected to form a circular groove, a slider (206) is slidably connected in the strip groove, and the slider (206) is fixedly connected to the inner wall of the strip groove via a second spring (207), a groove is opened at the upper end of the slider (206), a movable block (208) is slidably connected in the groove, and a third spring (209) is fixedly connected between the movable block (208) and the inner wall of the groove, the upper end of the movable block (208) is fixedly connected to a connecting rod (210) inclined upward, and the ends of the three connecting rods (210) away from the movable block are fixedly connected to a spherical block (211), the upper end of the spherical block (211) is opened with a placement groove, and the electronic fan (202) is correspondingly placed between the multiple placement grooves.

4. The automotive electronic fan vibration test device according to claim 3, characterized in that: Vibration sensors are respectively provided at the first spring (203), the second spring (207) and the third spring (209), and the plurality of vibration sensors are respectively connected to an external computer. A power supply interface connected to the electronic fan (202) and a battery are provided in the rectangular cover (201).

5. The automotive electronic fan vibration test device according to claim 3, characterized in that: A rotating shaft (306) is fixedly connected to the side wall of the mounting plate (305), and the rotating shaft (306) is rotatably connected to the side wall of the transverse plate (304). One end of the rotating shaft (304) away from the mounting plate (305) extends to the outside of the transverse plate (304) and is connected to the auxiliary steering unit.

6. The automotive electronic fan vibration test device according to claim 5, characterized in that: The adsorption and fixing unit comprises a micro vacuum pump (307) fixedly connected to the side wall of the mounting plate (305); the output end of the micro vacuum pump (307) is connected to a plurality of vacuum hoses (308); a vacuum suction cup (309) in communication with the vacuum hoses (308) is provided on the side wall of the mounting plate (305); in the initial stage of the mounting plate (305), the vacuum suction cup (309) is arranged upward and is adsorbed and connected to the side wall of the electronic fan (202).

7. The automotive electronic fan vibration test device according to claim 6, characterized in that: A plurality of L-shaped limiting blocks (310) are fixedly connected to the side wall of the mounting plate (305). The L-shaped limiting blocks (310) are correspondingly arranged on one side of the vacuum suction cup (309) and are in contact with and connected to the outer shell of the electronic fan (202) to play a limiting role. After the limiting position, the electronic fan (202) can correspond to the position of the placement groove on the spherical block (211) after turning.

8. The automotive electronic fan vibration test device according to claim 7, characterized in that: The auxiliary steering unit comprises a strip-shaped trough body (311) fixedly connected to the upper end of the top plate (104); a vertical rack plate (312) is fixedly connected to the inner wall of the strip-shaped trough body (311); one end of the rotating shaft (306) extends into the strip-shaped trough body (311) and is fixedly sleeved with a cylindrical gear (313) meshing with the rack plate (312).

9. The automotive electronic fan vibration test device according to claim 8, characterized in that: The base plate (101) is provided with a controller connected to the hydraulic rod (302) and the micro vacuum pump (307), and the controller controls the mounting plate (305) to achieve 180° rotation during the up and down reciprocating movement and complete the loading and unloading of the electronic fan (202).

10. The automotive electronic fan vibration test device according to claim 1, characterized in that: The testing method of the automobile electronic fan vibration testing device comprises the following steps: Step 1: Place the electronic fan (202) to be tested on the vacuum suction cup (309) of the mounting plate (305) and start the micro vacuum pump (307) to complete the adsorption fixation, and the L-shaped limit block (310) ensures the accuracy of the position of the electronic fan (202); Step 2: Start the hydraulic rod (302) to make the movable plate (303) move vertically downward, and at the same time, the cylindrical gear (313) on the outside of the rotating shaft (306) engages with the rack plate (312) to rotate. After the rotation reaches 180 degrees, the movement of the electronic fan (202) is completed and the micro vacuum pump (307) is turned off to allow the electronic fan (202) to fall between the multiple placement slots. The electronic fan (202) is connected to the power interface and started; Step 3: During the test, multiple vibration sensors are used to transmit data to a computer for analysis and storage. The triangular arrangement of the test components enables two-level vibration data testing, improving data accuracy. Step 4: After the test is completed, disconnect the electronic fan (202) from the power supply and then start the micro vacuum pump (307) to adsorb the electronic fan (202) again. With the cooperation of the hydraulic rod (302) and the auxiliary steering unit, the electronic fan (202) is restored to the initial position and convenient for unloading to replace the next electronic fan (202) for reciprocating testing.

Images