Balancing test bench and method based on lightweight aluminum alloy pull-tab of new energy vehicle

Abstract

The application discloses a balancing test bench and method based on a lightweight aluminum alloy pull-off block of a new energy vehicle, and relates to the technical field of pull-off block testing of new energy vehicles. The balancing test bench and method based on the lightweight aluminum alloy pull-off block of the new energy vehicle can place the lightweight aluminum alloy pull-off block of the new energy vehicle to be tested on the balancing test frame mechanism in advance through the cooperation of the bearing disc mechanism, the test driving mechanism and the balancing test frame mechanism. When the first servo motor drives the balancing test frame mechanism to rotate to the last end, the first servo motor stops working, the test driving mechanism drives the pull-off block to rotate, the balancing test frame mechanism can quickly and accurately detect the vibration signal of the pull-off block in the rotating state, and the detected signal is transmitted to the central processing unit. The vibration signal is analyzed to quickly determine the size and position of the unbalance of the pull-off block, continuous testing of multiple pull-off blocks is realized, and the balancing test efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle pull-out block testing technology, specifically to a balance test bench and method based on lightweight aluminum alloy pull-out blocks for new energy vehicles. Background Technology

[0002] With the continuous development of my country's new energy vehicle industry, new energy vehicles represented by plug-in hybrid, pure electric, and fuel cell vehicles have placed higher demands on the manufacturing standards of related components. Especially in collision safety scenarios, lightweight aluminum alloy pull-out blocks on the steering column achieve crumple within an appropriate distance through partial fracture, effectively reducing the injury of the steering wheel to the driver. However, under the trend of lightweighting, aluminum alloy pull-out blocks need to ensure mechanical balance and performance stability while reducing weight. At present, there is a lack of professional testing methods for their balance performance. Therefore, the development of a "balance test bench based on lightweight aluminum alloy pull-out blocks for new energy vehicles" has become a key requirement for improving the quality and safety performance of components.

[0003] The automobile balance weight pull-off test bench disclosed in the patent application with reference announcement number CN203432788U can realize the measurement of various balance weight pull-off forces, including the axial pull-off force test of clamp-type balance weights, the tangential pull-off force test of adhesive balance weights, and the tangential push-off force test of clamp-type balance weights. It has a simple and novel structure, and can test both the inner and outer edges of the wheel rim. It has high measurement accuracy, convenient operation, high degree of intelligence, low equipment price, and strong practicality.

[0004] A comprehensive analysis of the above-mentioned patents reveals the following drawbacks: Existing balancing test benches and methods based on lightweight aluminum alloy pull-out blocks for new energy vehicles typically involve placing the pull-out block onto a placement shaft and driving the shaft to rotate the block. Due to uneven mass distribution, the center of gravity of the rotating object deviates from the axis of rotation, generating centrifugal force and causing vibration. The magnitude and location of the imbalance of the pull-out block are determined by measuring the vibration signal. However, it is difficult to continuously test multiple pull-out blocks during the test, and it is also difficult to quickly and precisely align the rotation axis of the pull-out block with the rotation axis of the placement shaft. The fixing accuracy of the pull-out block is insufficient, resulting in low accuracy of the balancing test. Therefore, it is necessary to provide a balancing test bench and method based on lightweight aluminum alloy pull-out blocks for new energy vehicles to solve the above technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a balancing test bench and method based on lightweight aluminum alloy pull-out blocks for new energy vehicles. This solves the problems of difficulty in continuously testing multiple pull-out blocks during the test, difficulty in quickly and strictly aligning the rotation axis of the pull-out blocks with the rotation axis of the placement shaft, insufficient fixing accuracy of the pull-out blocks, and resulting in low balancing test accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a balancing test bench based on a lightweight aluminum alloy pull-out block for new energy vehicles, comprising: A testing chamber is placed on the ground. A worktable is fixedly installed between the side walls of the inner cavity of the testing chamber. A bearing disk mechanism is rotatably installed on the top of the worktable. A first servo motor is fixedly installed in the middle of the bottom of the worktable. The output shaft of the first servo motor rotatably passes through the top of the worktable and is fixedly connected to the middle of the bottom of the bearing disk mechanism. An upper sealing door is rotatably installed on the upper front of the testing chamber. A lower sealing door is rotatably installed on the lower front of the testing chamber. A control panel is fixedly installed on the upper right side of the testing chamber. A central processing unit is fixedly installed at the bottom of the inner cavity of the testing chamber. Several balancing test frame mechanisms are used to place the lightweight aluminum alloy pull-out blocks of new energy vehicles to be tested, and to analyze the vibration signals of the pull-out blocks in the rotating state, thereby determining the magnitude and position of the unbalance of the pull-out blocks. Several of the balancing test frame mechanisms are evenly arranged around the top of the bearing disc mechanism. The test drive mechanism is used to drive the lightweight aluminum alloy pull-out block for new energy vehicles on the balance test frame mechanism to rotate. The test drive mechanism is fixedly installed at the top rear end of the workbench and runs through the interior of the bearing disc mechanism.

[0007] Preferably, the bearing disc mechanism includes an inner bearing disc, a short shaft is fixedly disposed at the bottom center of the inner bearing disc, the bottom of the short shaft is rotatably connected to the top of the worktable, the output shaft of the first servo motor rotatably passes through the top of the worktable and is fixedly connected to the bottom of the short shaft, a plurality of U-shaped connecting frames are evenly fixedly disposed around the top of the inner bearing disc, and an outer bearing ring is fixedly disposed between the bottom ends of the plurality of U-shaped connecting frames that are far apart from each other.

[0008] Preferably, each of the balance test frame mechanisms includes a first side support assembly and a second side support assembly. The bottom of the first side support assembly is fixedly connected to the top of the inner bearing disk, and the bottom of the second side support assembly is fixedly connected to the top of the outer bearing ring. The first side support assembly and the second side support assembly have the same structure and are symmetrically arranged. A placement shaft assembly is provided between the first side support assembly and the second side support assembly. The placement shaft assembly is used to position the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested.

[0009] Preferably, the first side support assembly includes a side plate, the bottom of which is fixedly connected to the top of the inner bearing disk. A placement card seat is fixedly provided on the upper part of the side plate near the second side support assembly. A top plate is fixedly provided on the side wall of the side plate, located directly above the placement card seat. A T-shaped insert rod slides through the interior of the top plate.

[0010] Preferably, a U-shaped rod is fixedly provided at the bottom of the T-shaped insert, and U-shaped wheel frames are fixedly provided at both ends of the bottom of the U-shaped rod. A pressure wheel is rotatably provided between the inner sidewalls of each U-shaped wheel frame. A baffle plate located between the U-shaped rod and the top plate is fixedly sleeved on the outside of the T-shaped insert, and a telescopic spring is sleeved on the outside of the T-shaped insert.

[0011] Preferably, the telescopic spring is located between the top plate and the baffle, and a protruding plate located directly below the card holder is fixedly installed on the side wall of the side plate. A vibration sensor is fixedly installed on the top of the protruding plate, and an arc-shaped contact block is fixedly installed on the top of the vibration sensor.

[0012] Preferably, the placement shaft assembly includes a new energy vehicle pull-out block limiting shaft. The outer wall of the new energy vehicle pull-out block limiting shaft is evenly provided with a plurality of guide grooves. Two clamping plates are slidably sleeved on the outside of the new energy vehicle pull-out block limiting shaft. A plurality of triangular plug plates are fixedly provided on the side of the two clamping plates that are close to each other. The plurality of triangular plug plates slide through the corresponding guide grooves respectively.

[0013] Preferably, each of the two clamping plates is rotatably provided with an internally threaded positioning sleeve on the side away from each other. The internally threaded positioning sleeve is threaded onto the outside of the new energy vehicle pull-out block limiting shaft. The middle surface of the new energy vehicle pull-out block limiting shaft is evenly provided with several scale marking lines. One end of the new energy vehicle pull-out block limiting shaft is located in the placement bracket, and the other end of the new energy vehicle pull-out block limiting shaft is located in the placement bracket in the second side bracket assembly.

[0014] Preferably, the test drive mechanism includes a vertical plate, the bottom of which is fixedly connected to the top rear end of the workbench. The vertical plate is located between the inner bearing disk and the outer bearing ring. A second servo motor is fixedly installed at the lower front end of the vertical plate. The second servo motor is located above the inner bearing disk. The output shaft of the second servo motor rotates through the rear wall of the vertical plate and is fixedly installed with a drive pulley. Driven pulleys are rotatably installed on both the left and right sides of the upper rear end of the vertical plate. A belt is sleeved between the drive pulley and the two driven pulleys.

[0015] This invention also provides a balancing test method based on a lightweight aluminum alloy pull-out block for new energy vehicles, using a balancing test bench based on the lightweight aluminum alloy pull-out block for new energy vehicles. The specific method includes the following steps: Step 1: Open the upper sealing door and place the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested on the front balance test frame mechanism. The first servo motor drives the bearing disk mechanism to rotate, and the balance test frame mechanism and the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested rotate accordingly. Step 2: When the balancing test frame mechanism rotates to the last end, the first servo motor stops working. At this time, the balancing test frame mechanism contacts the test drive mechanism, and the test drive mechanism works to drive the new energy vehicle lightweight aluminum alloy pull-out block on the balancing test frame mechanism to rotate. Step 3: During the rotation of the pull-out block, the balancing test frame mechanism detects and analyzes the vibration signal of the pull-out block in the rotation state, thereby determining the magnitude and location of the unbalance of the pull-out block, and finally completing the balance test of the lightweight aluminum alloy pull-out block on the new energy vehicle.

[0016] Beneficial effects This invention provides a balancing test bench and method based on lightweight aluminum alloy pull-out blocks for new energy vehicles. Compared with existing technologies, it has the following advantages: 1. A balancing test bench and method based on lightweight aluminum alloy pull-out blocks for new energy vehicles: Through the cooperation of a bearing disc mechanism, a first servo motor, a test drive mechanism, and several balancing test frame mechanisms, the lightweight aluminum alloy pull-out blocks to be tested for new energy vehicles can be placed on the balancing test frame mechanism in advance. When the first servo motor drives the balancing test frame mechanism to rotate to the last end, the first servo motor stops working, and the test drive mechanism drives the pull-out blocks to rotate. During this process, the balancing test frame mechanism can quickly and accurately detect the vibration signal of the pull-out blocks in the rotating state, and transmit the detected signal to the central processor for vibration signal analysis to quickly determine the magnitude and location of the imbalance of the pull-out blocks. Continuous testing of multiple pull-out blocks can be achieved, greatly improving the efficiency of balancing tests.

[0017] 2. A balancing test bench and method based on lightweight aluminum alloy pull-out blocks for new energy vehicles. Through the cooperation between the placement bracket, the pressure roller, the vibration sensor, the arc-shaped contact block, the second side bracket assembly, and the placement shaft assembly, the stable rotation of the placement shaft assembly can be ensured. Furthermore, due to the symmetrical design of the two arc-shaped contact blocks contacting the two ends of the placement shaft assembly respectively, the vibration sensors on the first and second side bracket assemblies can synchronously capture rotational vibration signals from two points. Through bidirectional data comparison, the random errors of single-point detection can be effectively eliminated, and the reliability of vibration signal acquisition can be improved.

[0018] 3. A balancing test bench and method based on lightweight aluminum alloy pull-out blocks for new energy vehicles. Through the interaction of the pull-out block's limiting shaft, clamping plates, triangular connectors, and internal threaded positioning sleeves, one of the internal threaded positioning sleeves is screwed down to remove the corresponding clamping plate from the pull-out block's limiting shaft. The lightweight aluminum alloy pull-out block to be tested is then placed on the limiting shaft. The removed internal threaded positioning sleeve is then screwed back onto the limiting shaft, bringing the two clamping plates close together until they cannot be screwed down further. At this point, the triangular connectors on both clamping plates are in close contact with the inner hole of the pull-out block, firmly clamping and fixing the pull-out block in place. This quickly ensures that the rotation axis of the pull-out block is strictly aligned with the rotation axis of the limiting shaft, guaranteeing the accuracy of subsequent tests. Furthermore, the triangular connectors can position pull-out blocks with different inner hole sizes, broadening its applicability.

[0019] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional perspective view of the present invention; Figure 3 This is an assembly drawing of the workbench, the bearing disk mechanism, the balancing test frame mechanism, and the test drive mechanism of the present invention; Figure 4 This is an exploded view of the disk-supporting mechanism, the first servo motor, and the balance test frame mechanism of the present invention; Figure 5 This is an assembly drawing of the balancing test frame mechanism and the test drive mechanism of the present invention; Figure 6 This is a perspective view of the balancing test frame mechanism of the present invention; Figure 7 This is an exploded view of the balancing test frame mechanism of the present invention; Figure 8 This is a perspective view of the shaft assembly of the present invention; Figure 9 This is a perspective view of the first side support assembly of the present invention; Figure 10 This is a perspective view of the test drive mechanism of the present invention.

[0021] In the diagram: 1. Test chamber; 2. Workbench; 3. Bearing disc mechanism; 31. Inner bearing disc; 32. U-shaped connecting frame; 33. Outer bearing ring; 4. First servo motor; 5. Balance test frame mechanism; 51. First side support assembly; 511. Side plate; 512. Placement slot; 513. Top plate; 514. T-shaped insert; 515. U-shaped rod; 516. U-shaped wheel frame; 517. Lower pressure wheel; 518. Baffle plate; 519. Telescopic spring; 5110. Convex plate; 5111. Vibration sensor; 5112, arc-shaped contact block; 52, second side bracket assembly; 53, placement shaft assembly; 531, new energy vehicle pull-out block limiting shaft; 532, guide groove; 533, clamping plate; 534, triangular plug plate; 535, internal thread positioning sleeve; 536, scale marking line; 6, test drive mechanism; 61, vertical plate; 62, second servo motor; 63, driving pulley; 64, driven pulley; 65, belt; 7, upper sealing door; 8, lower sealing door; 9, control panel. Detailed Implementation

[0022] 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.

[0023] This invention provides two technical solutions: like Figures 1 to 3 The first embodiment is shown: a balancing test bench based on lightweight aluminum alloy pull-out blocks for new energy vehicles, comprising: The test chamber 1 is placed on the ground. A workbench 2 is fixedly installed between the side walls of the middle part of the inner cavity of the test chamber 1. A bearing disc mechanism 3 is rotatably installed on the top of the workbench 2. A first servo motor 4 is fixedly installed in the middle of the bottom of the workbench 2. The output shaft of the first servo motor 4 rotatably passes through the top of the workbench 2 and is fixedly connected to the middle of the bottom of the bearing disc mechanism 3. An upper sealing door 7 is rotatably installed on the upper front part of the test chamber 1. A lower sealing door 8 is rotatably installed on the lower front part of the test chamber 1. A control panel 9 is fixedly installed on the upper right side of the test chamber 1. A central processing unit is fixedly installed at the bottom of the inner cavity of the test chamber 1. Several balancing test frame mechanisms 5 are used to place the lightweight aluminum alloy pull-out blocks of new energy vehicles to be tested, and to analyze the vibration signals of the pull-out blocks in the rotating state, so as to determine the magnitude and position of the unbalance of the pull-out blocks. Several balancing test frame mechanisms 5 are evenly arranged in a circle on the top of the bearing disc mechanism 3. The test drive mechanism 6 is used to drive the lightweight aluminum alloy pull-out block of new energy vehicles on the balance test frame mechanism 5 to rotate. The test drive mechanism 6 is fixedly set at the top rear end of the workbench 2 and runs through the interior of the bearing disc mechanism 3.

[0024] Through the cooperation of the bearing disc mechanism 3, the first servo motor 4, the test drive mechanism 6, and several balancing test frame mechanisms 5, the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested can be placed on the balancing test frame mechanism 5 in advance. When the first servo motor 4 drives the balancing test frame mechanism 5 to rotate to the last end, the first servo motor 4 stops working, and the test drive mechanism 6 drives the pull-out block to rotate. During the process, the balancing test frame mechanism 5 can quickly and accurately detect the vibration signal of the pull-out block in the rotating state, and transmit the detected signal to the central processor for vibration signal analysis in order to quickly determine the magnitude and position of the imbalance of the pull-out block. This allows for continuous testing of multiple pull-out blocks, greatly improving the efficiency of balancing tests.

[0025] like Figures 4 to 10The second embodiment is shown, and its main difference from the first embodiment is that: the balance test bench based on the lightweight aluminum alloy pull-out block of new energy vehicles includes an inner bearing disk mechanism 3, a short shaft is fixedly installed at the bottom center of the inner bearing disk 31, the bottom of the short shaft is rotatably connected to the top of the workbench 2, the output shaft of the first servo motor 4 rotates through the top of the workbench 2 and is fixedly connected to the bottom of the short shaft, a number of U-shaped connecting frames 32 are evenly fixedly installed around the top of the inner bearing disk 31, and an outer bearing ring 33 is fixedly installed between the bottoms of the opposite ends of the number of U-shaped connecting frames 32, and each balance test bench mechanism 5 includes a first side support assembly 51 and a second side support assembly 52, the first side support assembly 5... The bottom of the first side support assembly 51 is fixedly connected to the top of the inner bearing disk 31, and the bottom of the second side support assembly 52 is fixedly connected to the top of the outer bearing ring 33. The first side support assembly 51 and the second side support assembly 52 have the same structure and are symmetrically arranged. A placement shaft assembly 53 is provided between the first side support assembly 51 and the second side support assembly 52. ​​The placement shaft assembly 53 is used to position the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested. The first side support assembly 51 includes a side plate 511. The bottom of the side plate 511 is fixedly connected to the top of the inner bearing disk 31. A placement card seat 512 is fixedly provided on the upper part of the side plate 511 near the second side support assembly 52. ​​A placement card seat 512 is fixedly provided on the side wall of the side plate 511. A top plate 513 directly above seat 512 has a T-shaped insert rod 514 slidingly passing through its interior. A U-shaped rod 515 is fixedly installed at the bottom of the T-shaped insert rod 514. U-shaped wheel frames 516 are fixedly installed at both ends of the bottom of the U-shaped rod 515. A downward pressure wheel 517 is rotatably installed between the inner side walls of each U-shaped wheel frame 516. A baffle 518 is fixedly sleeved on the outside of the T-shaped insert rod 514 between the U-shaped rod 515 and the top plate 513. A telescopic spring 519 is also sleeved on the outside of the T-shaped insert rod 514 between the top plate 513 and the baffle 518. A protruding plate 5110 is fixedly installed on the side wall of the side plate 511, directly below the card holder 512. A vibrating device is fixedly installed on the top of the protruding plate 5110. The top of the motion sensor 5111 and vibration sensor 5111 is fixedly equipped with an arc-shaped contact block 5112. The shaft assembly 53 includes a new energy vehicle pull-out block limiting shaft 531. The outer wall of the new energy vehicle pull-out block limiting shaft 531 is evenly provided with several guide grooves 532. Two clamping plates 533 are slidably sleeved on the outside of the new energy vehicle pull-out block limiting shaft 531. Several triangular plug-in plates 534 are fixedly provided on the side of the two clamping plates 533 that are close to each other. The triangular plug-in plates 534 slide through the corresponding guide grooves 532. On the side of the two clamping plates 533 that are far from each other, an internal threaded positioning sleeve 535 is rotatably provided. The internal threaded positioning sleeve 535 is threadedly sleeved on the outside of the new energy vehicle pull-out block limiting shaft 531.The middle surface of the new energy vehicle pull-out block limiting shaft 531 is evenly provided with several scale marking lines 536. One end of the new energy vehicle pull-out block limiting shaft 531 is located in the placement bracket 512, and the other end is located in the placement bracket 512 in the second side bracket assembly 52. ​​The test drive mechanism 6 includes a vertical plate 61. The bottom of the vertical plate 61 is fixedly connected to the top rear end of the workbench 2. The vertical plate 61 is located between the inner bearing disk 31 and the outer bearing ring 33. A second servo motor 62 is fixedly installed at the lower front end of the vertical plate 61. The second servo motor 62 is located above the inner bearing disk 31. The output shaft of the second servo motor 62 rotates through the rear wall of the vertical plate 61 and is fixedly provided with a drive pulley 63. Driven pulleys 64 are rotatably installed on both the left and right sides of the upper rear end of the vertical plate 61. A belt 65 is sleeved between the drive pulley 63 and the two driven pulleys 64.

[0026] Through the cooperation between the placement bracket 512, the pressure roller 517, the vibration sensor 5111, the arc-shaped contact block 5112, the second side bracket assembly 52, and the placement shaft assembly 53, the stable rotation of the placement shaft assembly 53 can be ensured. Furthermore, due to the symmetrical design of the two arc-shaped contact blocks 5112 contacting both ends of the placement shaft assembly 53, the vibration sensors 5111 on the first side bracket assembly 51 and the second side bracket assembly 52 can synchronously capture rotational vibration signals from two points. Through bidirectional data comparison, the random errors of single-point detection can be effectively eliminated, improving the reliability of vibration signal acquisition. Through the cooperation between the new energy vehicle pull-out block limiting shaft 531, the clamping plate 533, the triangular connector plate 534, and the internal thread positioning sleeve 535, one of the internal thread positioning sleeves 53 is screwed on. 5. Remove the corresponding clamping plate 533 from the new energy vehicle pull-out block limiting shaft 531, then put the new energy vehicle lightweight aluminum alloy pull-out block to be tested onto the new energy vehicle pull-out block limiting shaft 531, and then screw the removed internal thread positioning sleeve 535 back onto the new energy vehicle pull-out block limiting shaft 531, so that the two clamping plates 533 are close to each other until they cannot be screwed. At this time, the triangular plug plates 534 on the two clamping plates 533 are in close contact with the inner hole of the pull-out block, tightly clamping and fixing the pull-out block in place, ensuring that the rotation axis of the pull-out block and the rotation axis of the new energy vehicle pull-out block limiting shaft 531 can be strictly coincided, ensuring the accuracy of subsequent tests, and under the action of the triangular plug plate 534, it is possible to position pull-out blocks with different inner hole sizes, making the application range wider.

[0027] This invention also provides a balancing test method based on a lightweight aluminum alloy pull-out block for new energy vehicles. The method employs a balancing test bench based on the lightweight aluminum alloy pull-out block for new energy vehicles, and includes the following steps: Step 1: Open the upper sealing door 7 and place the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested on the front balance test frame mechanism 5. During the process, pull the T-shaped insert 514 upward, compress the telescopic spring 519, and move the lower pressure wheel 517 upward. Then, remove the placement shaft assembly 53 from between the first side bracket assembly 51 and the second side bracket assembly 52. ​​Next, screw on one of the internal thread positioning sleeves 535 to remove the internal thread positioning sleeve 535 from the limit shaft 531 of the new energy vehicle pull-out block. Unscrew it, and the corresponding clamping plate 533 is removed. Then, the lightweight aluminum alloy pull-out block for new energy vehicles to be tested is placed on the pull-out block limiting shaft 531. Next, the removed internal threaded positioning sleeve 535 is screwed back onto the pull-out block limiting shaft 531, bringing the two clamping plates 533 closer together until they cannot be screwed down further. At this point, the triangular insert plates 534 on both clamping plates 533 are in close contact with the inner hole of the pull-out block, firmly clamping the pull-out block and aligning its rotation axis with the inner hole of the pull-out block. The rotation axes of the new energy vehicle pull-out block limiting shaft 531 are strictly aligned to ensure the accuracy of subsequent tests. Next, the T-shaped insert 514 is pulled upwards, placing one end of the new energy vehicle pull-out block limiting shaft 531 on the placement bracket 512, and the other end on the placement bracket 512 in the second side bracket assembly 52. ​​The pull on the T-shaped insert 514 is released, and under the elastic action of the telescopic spring 519, the lower pressure roller 517 moves downwards. The bottom of 7 contacts the outer wall of the new energy vehicle pull-out block limiting shaft 531, limiting the new energy vehicle pull-out block limiting shaft 531. At this time, the outer wall of the new energy vehicle pull-out block limiting shaft 531 contacts the inner wall of the arc-shaped contact block 5112. Then the first servo motor 4 works to drive the bearing disc mechanism 3 to rotate. The balance test frame mechanism 5 and the new energy vehicle lightweight aluminum alloy pull-out block to be tested rotate accordingly. During the process, the test drive mechanism 6 will not interfere with the rotation of the U-shaped connecting frame 32. Step 2: When the balance test frame mechanism 5 rotates to the last end, the first servo motor 4 stops working. At this time, the bottom of the new energy vehicle pull-out block limiting shaft 531 contacts the top middle of the belt 65. Then, the second servo motor 62 drives the active pulley 63 to rotate. Under the interaction of the active pulley 63, the driven pulley 64 and the belt 65, the belt 65 moves synchronously with the active pulley 63 through friction, so that the belt 65 drives the new energy vehicle pull-out block limiting shaft 531 to rotate through friction, and the pull-out block rotates accordingly. Step 3: During the rotation of the pull-out block, since the outer wall of the limit shaft 531 of the new energy vehicle pull-out block is always in contact with the inner wall of the arc-shaped contact block 5112, the vibration sensor 5111 detects the vibration signal of the arc-shaped contact block 5112, that is, it detects the vibration signal of the pull-out block in the rotating state, and transmits the detected signal to the central processing unit. The central processing unit analyzes the vibration signal to determine the magnitude and position of the imbalance of the pull-out block, and completes the balance test of the pull-out block. After the pull-out block is tested, the second servo motor 62 stops working, the first servo motor 4 starts again, and drives the bearing disc mechanism 3 to continue to rotate clockwise, rotating the next balance test frame mechanism 5 to the last end, and performing a balance test on the pull-out block to be tested on this balance test frame mechanism 5.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A balancing test bench based on lightweight aluminum alloy pull-out blocks for new energy vehicles, characterized in that, include: A testing chamber is placed on the ground. A worktable is fixedly installed between the side walls of the inner cavity of the testing chamber. A bearing disk mechanism is rotatably installed on the top of the worktable. A first servo motor is fixedly installed in the middle of the bottom of the worktable. The output shaft of the first servo motor rotatably passes through the top of the worktable and is fixedly connected to the middle of the bottom of the bearing disk mechanism. An upper sealing door is rotatably installed on the upper front of the testing chamber. A lower sealing door is rotatably installed on the lower front of the testing chamber. A control panel is fixedly installed on the upper right side of the testing chamber. A central processing unit is fixedly installed at the bottom of the inner cavity of the testing chamber. Several balancing test frame mechanisms are used to place the lightweight aluminum alloy pull-out blocks of new energy vehicles to be tested, and to analyze the vibration signals of the pull-out blocks in the rotating state, thereby determining the magnitude and position of the unbalance of the pull-out blocks. Several of the balancing test frame mechanisms are evenly arranged around the top of the bearing disc mechanism. The test drive mechanism is used to drive the lightweight aluminum alloy pull-out block for new energy vehicles on the balance test frame mechanism to rotate. The test drive mechanism is fixedly installed at the top rear end of the workbench and passes through the interior of the bearing disc mechanism. The bearing disk mechanism includes an inner bearing disk, a short shaft is fixedly installed at the bottom center of the inner bearing disk, the bottom of the short shaft is rotatably connected to the top of the worktable, the output shaft of the first servo motor rotatably passes through the top of the worktable and is fixedly connected to the bottom of the short shaft, and a number of U-shaped connecting frames are evenly fixedly installed around the top of the inner bearing disk, and an outer bearing ring is fixedly installed between the bottom ends of the number of U-shaped connecting frames that are far apart from each other. Each of the aforementioned balance test frame mechanisms includes a first side support assembly and a second side support assembly. The bottom of the first side support assembly is fixedly connected to the top of the inner bearing disk, and the bottom of the second side support assembly is fixedly connected to the top of the outer bearing ring. The first side support assembly and the second side support assembly have the same structure and are symmetrically arranged. A placement shaft assembly is provided between the first side support assembly and the second side support assembly. The placement shaft assembly is used to position the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested. The first side support assembly includes a side plate, the bottom of which is fixedly connected to the top of the inner bearing disk. A placement card seat is fixedly provided on the upper part of the side plate near the second side support assembly. A top plate located directly above the placement card seat is fixedly provided on the side wall of the side plate. A T-shaped insert rod slides through the interior of the top plate. The placement shaft assembly includes a new energy vehicle pull-out block limiting shaft. A plurality of guide grooves are evenly opened around the outer wall of the new energy vehicle pull-out block limiting shaft. Two clamping plates are slidably sleeved on the outside of the new energy vehicle pull-out block limiting shaft. A plurality of triangular plug plates are fixedly installed on the side of the two clamping plates that are close to each other. The plurality of triangular plug plates slide through the corresponding guide grooves respectively. Both clamping plates are rotatably provided with internal threaded positioning sleeves on opposite sides. The internal threaded positioning sleeves are threaded onto the outside of the new energy vehicle pull-out block limiting shaft. The middle surface of the new energy vehicle pull-out block limiting shaft is evenly provided with several scale marking lines. One end of the new energy vehicle pull-out block limiting shaft is located in the placement bracket, and the other end of the new energy vehicle pull-out block limiting shaft is located in the placement bracket in the second side bracket assembly.

2. The balancing test bench based on lightweight aluminum alloy pull-out blocks for new energy vehicles according to claim 1, characterized in that: A U-shaped rod is fixedly installed at the bottom of the T-shaped rod, and U-shaped wheel frames are fixedly installed at both ends of the bottom of the U-shaped rod. A downward pressure wheel is rotatably installed between the inner side walls of each U-shaped wheel frame. A baffle plate located between the U-shaped rod and the top plate is fixedly sleeved on the outside of the T-shaped rod, and a telescopic spring is sleeved on the outside of the T-shaped rod.

3. The balancing test bench based on lightweight aluminum alloy pull-out blocks for new energy vehicles according to claim 2, characterized in that: The telescopic spring is located between the top plate and the baffle. A protruding plate is fixedly installed on the side wall of the side plate, located directly below the card holder. A vibration sensor is fixedly installed on the top of the protruding plate, and an arc-shaped contact block is fixedly installed on the top of the vibration sensor.

4. The balancing test bench based on lightweight aluminum alloy pull-out blocks for new energy vehicles according to claim 1, characterized in that: The test drive mechanism includes a vertical plate, the bottom of which is fixedly connected to the top rear end of the workbench. The vertical plate is located between the inner bearing disk and the outer bearing ring. A second servo motor is fixedly installed at the lower front end of the vertical plate. The second servo motor is located above the inner bearing disk. The output shaft of the second servo motor rotates through the rear wall of the vertical plate and is fixedly installed with a drive pulley. Driven pulleys are rotatably installed on both the left and right sides of the upper rear end of the vertical plate. A belt is sleeved between the drive pulley and the two driven pulleys.

5. A balancing test method based on lightweight aluminum alloy pull-out blocks for new energy vehicles, characterized in that: Using the balancing test bench based on the lightweight aluminum alloy pull-out block for new energy vehicles as described in any one of claims 1-4, the method includes the following steps: Step 1: Open the upper sealing door and place the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested on the front balance test frame mechanism. The first servo motor drives the bearing disk mechanism to rotate, and the balance test frame mechanism and the lightweight aluminum alloy pull-out block of the new energy vehicle to be tested rotate accordingly. Step 2: When the balancing test frame mechanism rotates to the last end, the first servo motor stops working. At this time, the balancing test frame mechanism contacts the test drive mechanism, and the test drive mechanism works to drive the new energy vehicle lightweight aluminum alloy pull-out block on the balancing test frame mechanism to rotate. Step 3: During the rotation of the pull-out block, the balancing test frame mechanism detects and analyzes the vibration signal of the pull-out block in the rotation state, thereby determining the magnitude and location of the unbalance of the pull-out block, and finally completing the balance test of the lightweight aluminum alloy pull-out block on the new energy vehicle.

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