Test bench for endurance test of air spring dust cover

Abstract

The utility model relates to the technical field of automobile part tests, in particular to a test bed for an endurance test of an air spring dust cover, which comprises a fixing assembly for fixing the air spring dust cover and a compression assembly for compressing the air spring dust cover, the fixing assembly is arranged at one end of the air spring dust cover, and the compression assembly is movably arranged at the other end of the air spring dust cover. When the air spring dust cover is arranged on the fixing assembly, the compression assembly moves towards the direction of the fixing assembly so as to compress the air spring dust cover. According to the utility model, the compression and extension circulation of the air spring dust cover under the actual working condition can be simulated, and the wear condition of the air spring dust cover after long-time use can be detected, thereby verifying whether the air spring dust cover can meet the expected service life or not.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component testing, in particular to a test bench for durability testing of air spring dust covers. Background Art

[0002] With the booming automotive industry, demands for improved ride comfort and handling stability are increasing. To meet these demands, air suspension systems are increasingly being used in passenger cars. Air springs, a key component of air suspension systems, are closely tied to their development. Air springs operate by filling a sealed container with compressed air, leveraging the compressibility of the gas to achieve their unique elastic properties. Compared to traditional coil springs, air springs exhibit more ideal nonlinear elastic properties, automatically adjusting vehicle height based on changes in load, thereby maintaining vehicle stability and comfort.

[0003] During use, the above-mentioned air springs are subject to erosion from various environmental factors, such as dust, sand, and moisture. These external factors not only affect the performance and life of the air springs, but may also pose a potential threat to the safety and stability of the vehicle. To address these issues, passenger car air spring dust covers have emerged. The dust cover not only protects the air spring from the external environment, but also reduces the risk of leakage caused by environmental factors, thereby ensuring the normal operation and performance of the air spring. The invention patent with publication number CN118008981A discloses an air spring dust cover and an air spring, comprising a dust cover body and ribs. The dust cover body forms a folding surface in a compressed state, and a cavity isolated from the interior of the dust cover body is formed between adjacent folding surfaces; the ribs are arranged on the inner surface of the dust cover body and are located on the folding surface of the dust cover body; wherein the ribs allow the cavity formed between adjacent folding surfaces to be connected to the interior of the dust cover body, or the ribs support the cavity formed between adjacent folding surfaces so that the cavity is not deformed by compression.

[0004] Because air spring dust covers wear out during use, durability testing is required before automotive products are released to the market to verify their performance under simulated operating conditions. However, existing technologies lack test benches capable of simulating the movement of air spring dust covers under actual operating conditions, hindering the evaluation of performance indicators such as the expected service life of air spring dust covers. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a test bench for durability testing of air spring dust covers, which can simulate the compression and extension cycle of the air spring dust cover under actual working conditions. By checking the wear of the air spring dust cover after long-term use, the purpose of testing the durability performance indicators of the dust cover can be achieved.

[0006] The technical solution to the problem solved by the utility model is to provide a test bench for durability testing of air spring dust covers, comprising a fixing assembly for fixing the air spring dust cover and a compression assembly for compressing the air spring dust cover, wherein the fixing assembly is arranged at one end of the air spring dust cover, and the compression assembly is movably arranged at the other end of the air spring dust cover; when the air spring dust cover is arranged on the fixing assembly, the compression assembly moves toward the fixing assembly to compress the air spring dust cover.

[0007] Furthermore, the test bench for the durability test of the air spring dust cover provided by the present invention may also have the following feature: it also includes a drive assembly for driving the compression assembly to move.

[0008] Furthermore, the test bench for the durability test of the air spring dust cover provided by the present invention may also have the following characteristics: the driving assembly includes an actuator, and the actuator is connected to the compression assembly.

[0009] Furthermore, the test bench for the durability test of the air spring dust cover provided by the present invention may also have the following characteristics: the driving assembly includes a hydraulic servo system, and the hydraulic cylinder of the hydraulic servo system forms the actuator.

[0010] Furthermore, the test bench for the durability test of the air spring dust cover provided by the present invention may also have the following characteristics: the drive assembly is installed through an installation assembly, the installation assembly includes two mutually parallel columns, and a connecting beam arranged between the columns, the actuator passes through the connecting beam and is connected to the compression assembly.

[0011] Furthermore, the test bench for the durability test of the air spring dust cover provided by the utility model may also have the following characteristics: the fixed component and the compression component are connected by a movable guide; the movable guide includes a guide rod and a linear bearing, one end of the guide rod is connected to the compression component, and the other end is connected to the fixed component through the linear bearing.

[0012] Furthermore, the test bench for durability testing of air spring dust covers provided by the present invention may also have the following feature: the fixing assembly includes at least one fixing member to fix at least one air spring dust cover.

[0013] Furthermore, the test bench for durability testing of air spring dust covers provided by the present invention may also have the following characteristics: the compression assembly includes at least one compression member, and the number and positions of the compression members correspond to the fixing members.

[0014] Furthermore, the test bench for durability testing of air spring dust covers provided by the present invention may also have the following characteristics: a first positioning groove is provided on the fixing member, a second positioning groove corresponding thereto is provided on the compression member, and one end of the air spring dust cover is clamped in the first positioning groove and the other end is clamped in the second positioning groove.

[0015] Furthermore, the test bench for the durability test of the air spring dust cover provided by the present invention may also have the following feature: the fixing assembly is provided with a plurality of air holes for exhaust.

[0016] The beneficial effects of the utility model are:

[0017] 1. In this application, the air spring dust cover is compressed by controlling the movement of the compression assembly toward the fixed assembly, simulating the compression and extension cycle of the dust cover as it moves with the air spring in actual working conditions. By testing the wear of the air spring dust cover after long-term use, it is verified whether it can meet the expected service life. Furthermore, by analyzing problems encountered during the durability test, potential design defects or manufacturing issues can be discovered, leading to product improvements and optimization.

[0018] 2. In this application, a movable guide is further provided between the compression assembly and the fixed assembly to ensure that the compression assembly remains aligned on the same axis during movement, thereby improving the accuracy of the test results. Furthermore, because the movable guide ensures that the compression assembly remains in the correct position for movement, it can suppress relative axial movement of the air spring dust cover during testing.

[0019] 3. In this application, by providing a single or multiple fixing parts, and a single or multiple compression parts corresponding thereto, it is possible to support simultaneous testing of one or more groups of air spring dust covers as required, thereby ensuring test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the compression assembly and the fixing assembly of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a fixing assembly provided with an air spring dust cover according to the present invention.

[0024] In the picture:

[0025] 1. Fixing assembly; 11. Fixing part; 12. First positioning groove; 13. Air hole; 2. Compression assembly; 21. Compression part; 3. Driving assembly; 31. Actuator; 4. Mounting assembly; 41. Column; 42. Connecting beam; 5. Base; 6. Moving guide; 61. Guide rod; 62. Linear bearing; 7. Air spring dust cover. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] The utility model provides a test bench for durability testing of air spring dust covers, the specific structure of which is as follows:

[0028] The test bench for the durability test of the air spring dust cover includes a fixing assembly 1 for fixing the air spring dust cover 7 and a compression assembly 2 for compressing the air spring dust cover 7. The fixing assembly 1 is arranged at one end of the air spring dust cover 7, and the compression assembly 2 is movably arranged at the other end of the air spring dust cover 7. When the air spring dust cover 7 is arranged on the fixing assembly 1, the compression assembly 2 moves toward the fixing assembly 1 to compress the air spring dust cover 7. When conducting the durability test of the air spring dust cover, the air spring dust cover 7 is located between the compression assembly 2 and the fixing assembly 1. The movement of the compression assembly 2 can compress the air spring dust cover 7, thereby simulating the compression and extension cycle of the dust cover when it moves with the air spring in an actual working environment. By detecting the wear of the air spring dust cover 7 after long-term use, it is verified whether it can meet the expected service life. In addition, by analyzing the problems encountered during the durability test, potential design defects or manufacturing problems can be discovered, and the product can be improved and optimized.

[0029] To achieve precise control of the compression assembly 2, the test bench for the air spring dust cover durability test also includes a drive assembly 3 for driving the movement of the compression assembly 2. The drive assembly 3 includes an actuator 31, which is connected to the compression assembly 2. The connection between the actuator 31 and the compression assembly 2 is preferably detachable via bolts to accommodate component replacement requirements. To provide high-precision control over the movement of the compression assembly 2, enabling it to reciprocate according to preset parameters (such as speed, displacement, etc.) to accurately simulate the dynamic stress conditions of the air spring dust cover 7 in actual use, the drive assembly 3 preferably includes a hydraulic servo system, with the hydraulic cylinder of the hydraulic servo system forming the actuator 31. During use, the hydraulic servo system controls the piston of the hydraulic cylinder to move according to the preset parameters, thereby driving the movement of the compression assembly 2 connected to the piston of the hydraulic cylinder, thereby applying a compressive force to the air spring dust cover 7.

[0030] The driving assembly 3 is installed through the mounting assembly 4. The mounting assembly 4 includes two parallel columns 41 and a connecting beam 42 provided between the columns 41. The actuator 31 passes through the connecting beam 42 and is connected to the compression assembly 2. The columns 41 and the connecting beam 42 are preferably detachably connected by bolts. The two parallel columns 41 and the connecting beam 42 together form a rigid frame. Such a design can ensure the structural stability of the entire test bench and reduce possible shaking or deformation during the test. In addition, the connecting beam 42 serves as a supporting structure for the actuator 31, which can fix the position of the actuator 31, ensure that the starting and ending points of each test are consistent, and improve the repeatability of the test results.

[0031] In this embodiment, the test bench for air spring dust cover durability testing also includes a base 5, on which the fixing assembly 1 and the uprights 41 are mounted. The base 5 provides basic support for the entire test bench, ensuring a stable platform for all mounted components, effectively reducing displacement or shaking of the test bench during testing. To ensure easy assembly and disassembly of various components, the fixing assembly 1 and the uprights 41 are detachably connected to the base 5 via bolts.

[0032] The fixed component 1 and the compression component 2 are connected via a movable guide 6; the movable guide 6 includes a guide rod 61 and a linear bearing 62, one end of the guide rod 61 is connected to the compression component 2, and the other end is connected to the fixed component 1 via the linear bearing 62. By using the guide rod 61 and the linear bearing 62 in conjunction with each other, it can be ensured that the compression component 2 always remains on the same axis during the movement, thereby improving the accuracy of the test results. In addition, since the movable guide 6 ensures that the compression component 2 remains in the correct position to move, it can suppress the relative movement of the air spring dust cover 7 in its axial direction during the test. The linear bearing 62 is preferably a flange linear motion bearing, which has a high structural strength and can withstand a large load, thereby extending the service life of the entire movable guide 6.

[0033] The fixing assembly 1 includes at least one fixing member 11 to secure at least one air spring dust cover 7. Furthermore, the compression assembly 2 includes at least one compression member 21. The number and position of the compression members 21 correspond to the fixing members 11 to ensure the accuracy of the compression force applied by the compression assembly 2. The number of fixing members 11 can be set to one or more as required. In this embodiment, to support the simultaneous testing of multiple sets of air spring dust covers 7, the number of fixing members 11 is preferably three, and accordingly, the number of compression members 21 is also preferably three.

[0034] In order to stably fix the air spring dust cover 7 and prevent it from shifting or shaking when subjected to the pressure of the compression assembly 2, a first positioning groove 12 is provided on the fixing member 11, and a corresponding second positioning groove is provided on the compression member 21. One end of the air spring dust cover 7 is clamped in the first positioning groove 12 and the other end is clamped in the second positioning groove.

[0035] The fixing assembly 1 is provided with a plurality of air holes 13 for exhausting air. The plurality of air holes 13 are preferably evenly spaced and distributed on the fixing member 11 to prevent the risk of explosion of the dust cover and protect the test bench equipment.

[0036] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the scope of protection of the present invention.

[0037] In the description of the invention, it should be noted that relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0038] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "front," "back," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "several" means two or more.

[0039] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific embodiments of the present invention are not limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A test bench for durability testing of air spring dust covers, characterized in that: The invention comprises a fixing assembly (1) for fixing the air spring dust cover (7) and a compression assembly (2) for compressing the air spring dust cover (7), wherein the fixing assembly (1) is arranged at one end of the air spring dust cover (7), and the compression assembly (2) is movably arranged at the other end of the air spring dust cover (7); when the air spring dust cover (7) is arranged on the fixing assembly (1), the compression assembly (2) moves toward the fixing assembly (1) to compress the air spring dust cover (7).

2. The test bench for durability test of air spring dust cover according to claim 1, characterized in that: It also includes a driving component (3) for driving the compression component (2) to move.

3. The test bench for durability testing of air spring dust covers according to claim 2, characterized in that: The driving assembly (3) comprises an actuator (31), and the actuator (31) is connected to the compression assembly (2).

4. The test bench for durability testing of air spring dust covers according to claim 3, characterized in that: The drive assembly (3) comprises a hydraulic servo system, wherein a hydraulic cylinder of the hydraulic servo system forms the actuator (31).

5. The test bench for durability testing of air spring dust covers according to claim 3, characterized in that: The drive assembly (3) is installed via a mounting assembly (4), wherein the mounting assembly (4) comprises two mutually parallel columns (41) and a connecting beam (42) disposed between the columns (41), and the actuator (31) passes through the connecting beam (42) and is connected to the compression assembly (2).

6. The test bench for durability testing of air spring dust covers according to claim 1, characterized in that: The fixed assembly (1) and the compression assembly (2) are connected via a movable guide (6); the movable guide (6) comprises a guide rod (61) and a linear bearing (62); one end of the guide rod (61) is connected to the compression assembly (2), and the other end is connected to the fixed assembly (1) via the linear bearing (62).

7. The test bench for air spring dust cover durability test according to claim 1, characterized in that: The fixing assembly (1) comprises at least one fixing member (11) for fixing at least one air spring dust cover (7).

8. The test bench for durability testing of air spring dust covers according to claim 7, characterized in that: The compression assembly (2) comprises at least one compression member (21), and the number and positions of the compression members (21) correspond to those of the fixing member (11).

9. The test bench for durability testing of air spring dust covers according to claim 8, characterized in that: The fixing member (11) is provided with a first positioning groove (12), the compression member (21) is provided with a second positioning groove corresponding thereto, and one end of the air spring dust cover (7) is clamped in the first positioning groove (12) and the other end is clamped in the second positioning groove.

10. The test bench for durability testing of air spring dust covers according to claim 1, characterized in that: The fixing assembly (1) is provided with a plurality of air holes (13) for exhausting air.

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