A noise testing device for automobile steering system assembly

Abstract

This utility model discloses a noise testing device for an automotive steering gear assembly, belonging to the field of noise detection technology. It includes: a test chamber and a support plate; a drive plate disposed within the test chamber, with a drive assembly at its bottom end, and support frames on both sides of the upper end of the support plate at the bottom end of the drive assembly; and a mounting ring disposed at the bottom end of the drive plate, located outside the drive assembly, with an internal toothed ring on its inner wall. This utility model enables the noise collection assembly to be precisely positioned in three-dimensional space according to test requirements, effectively expanding the acoustic signal acquisition coverage. It ensures that the noise generated by the steering gear assembly under different operating conditions can be completely captured, avoiding signal loss due to fixed acquisition positions. This significantly enhances the accuracy of the noise characteristic analysis of the steering gear assembly, providing a solid guarantee for the reliability of the test results, and thus optimizing the overall accuracy of the noise testing device.

Description

Technical Field

[0001] This utility model belongs to the field of noise detection technology, specifically relating to a noise testing device for an automotive steering gear assembly. Background Technology

[0002] The automotive steering gear assembly noise testing device is a comprehensive testing platform designed to evaluate the acoustic performance of steering systems. Its core function is to accurately measure and analyze the noise generated by the steering gear assembly and its components during dynamic steering by simulating real-vehicle operating conditions. Its working principle is based on acoustic and vibration theories. A high-precision rotary simulator drives the steering column, combined with a load mechanism to simulate steering resistance. Simultaneously, a soundproof enclosure isolates environmental noise interference. Acoustic sensors and vibration accelerometers are placed at key locations such as the steering gear rack meshing and worm gear transmission to simultaneously collect noise signals and vibration data. The automotive steering gear assembly noise testing device can quantify the noise level of the steering system, pinpoint the root cause of abnormal noise, and provide data support for optimizing gear rack clearance, improving lubrication structures, or adjusting motor control strategies.

[0003] Existing automotive steering assembly noise testing devices mainly rely on noise detection equipment to collect and analyze the acoustic signals generated by the steering assembly during operation. However, since the existing noise detection components are usually located in fixed positions, their sound field coverage is limited, making it difficult to fully capture the multi-dimensional noise characteristics generated by the steering assembly under different operating conditions. This results in the loss of the integrity of the noise signal, which leads to a lack of accuracy in the use of automotive steering assembly noise testing devices. Utility Model Content

[0004] This invention provides a noise testing device for automotive steering systems to address the problem of the difficulty in comprehensively detecting the noise generated by automotive steering system assemblies in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a noise testing device for an automotive steering gear assembly, comprising:

[0006] Test chamber and support plate;

[0007] A drive board is installed inside the test chamber. The bottom of the drive board is provided with a drive assembly, and the upper sides of the bearing plate located at the bottom of the drive assembly are provided with support frames.

[0008] A mounting ring is provided at the bottom end of the drive plate. The mounting ring is located on the outside of the drive assembly, and the inner wall of the mounting ring is provided with an internal toothed ring.

[0009] A noise collection component is disposed on one side of the bottom end of the mounting ring, and the noise collection component is located on one side of the support frame.

[0010] In a preferred embodiment, the test chamber is equipped with a cylinder at its upper end, and the output end of the cylinder is located at the upper end of the drive plate.

[0011] In a preferred embodiment, the test chamber is provided with multiple limiting sleeves at its upper end, and each of the multiple limiting sleeves is provided with a matching limiting rod, the bottom end of each of the multiple limiting rods being disposed at the upper end of the drive plate.

[0012] To further improve the comprehensiveness of noise collection from the automotive steering system assembly, a first motor is provided on one side of the upper end of the drive plate. The output end of the first motor passes through the drive plate and is provided with a drive wheel, which is meshed with an internal gear ring.

[0013] In a preferred embodiment, the upper end of the mounting ring is provided with a snap-fit ​​ring with a "T" shaped cross-section, and the bottom end of the drive plate is provided with a snap-fit ​​groove that matches the snap-fit ​​ring. The snap-fit ​​ring is located in the snap-fit ​​groove and is slidably connected to the side wall of the snap-fit ​​groove.

[0014] In a preferred embodiment, an electric push rod is provided on one side of the bottom end of the mounting ring, and the output end of the electric push rod is located on the upper end of the noise collection component.

[0015] In order to adapt to automotive steering assemblies of different sizes and specifications, the drive plate is further provided with a threaded rod at the bottom end, the drive assembly is provided with a threaded hole that is adapted to the threaded rod, the threaded rod passes through the threaded hole and is threadedly connected to the side wall of the threaded hole, a second motor is provided on one side of the bottom end of the drive plate, and one end of the threaded rod is set on the output end of the second motor.

[0016] In a preferred embodiment, both support frames are provided with multiple fixing bolts at their bottom ends, and the upper end of the bearing plate is provided with multiple fixing holes adapted to the fixing bolts, with the multiple fixing bolts respectively located in the multiple fixing holes.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model, through a rotatable mounting ring set at the bottom of the drive plate and in conjunction with an electric push rod on one side of its bottom, realizes the dynamic adjustment function of the position and height of the noise collection component. This allows the noise collection component to be accurately positioned in three-dimensional space according to test requirements, effectively expanding the acoustic signal acquisition coverage range. It ensures that the noise generated by the steering gear assembly under different working conditions can be completely captured, avoiding the signal loss problem caused by fixed acquisition position. This significantly enhances the accuracy of the noise characteristic analysis of the steering gear assembly, provides a solid guarantee for the reliability of test results, and optimizes the use accuracy of the entire noise test device.

[0019] 2. This utility model, through the threaded rod set at the bottom of the drive plate and the movable support frame on both sides of the upper end of the bearing plate, can adjust the position of the drive component and the support frame in the horizontal direction according to different sizes and specifications of automotive steering gear assemblies. It can stably install automotive steering gear assemblies of different sizes and specifications, which significantly expands the application scope of the automotive steering gear assembly noise testing device, can meet diverse testing needs, greatly improves its applicability in the field of automotive steering gear assembly noise testing, and provides strong support for a more comprehensive and accurate evaluation of steering gear assembly noise performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main appearance of the structure of this utility model;

[0021] Figure 2 This is a schematic front cross-sectional view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram showing the connection of the mounting ring, noise collection component, and snap-fit ​​ring in the structure of this utility model.

[0023] Figure 4 This is a cross-sectional schematic diagram of the support plate of the present invention.

[0024] In the diagram: 1. Test chamber; 2. Bearing plate; 3. Drive plate; 4. Drive assembly; 5. Support frame; 6. Mounting ring; 7. Internal gear ring; 8. Noise collection assembly; 9. Cylinder; 10. Limiting sleeve; 11. Limiting rod; 12. First motor; 13. Drive wheel; 14. Snap ring; 15. Electric push rod; 16. Threaded rod; 17. Second motor; 18. Fixing bolt; 19. Fixing hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1:

[0027] Please see Figure 1-4 This utility model provides a noise testing device for an automotive steering gear assembly, comprising:

[0028] Test chamber 1 and bearing plate 2;

[0029] The drive plate 3 is set inside the test chamber 1. The bottom of the drive plate 3 is provided with a drive assembly 4. Support frames 5 are provided on both sides of the upper end of the bearing plate 2 located at the bottom of the drive assembly 4.

[0030] Mounting ring 6 is located at the bottom of drive plate 3. Mounting ring 6 is located on the outside of drive assembly 4. The inner wall of mounting ring 6 is provided with internal toothed ring 7.

[0031] The noise collection component 8 is located on one side of the bottom end of the mounting ring 6, and the noise collection component 8 is located on one side of the support frame 5.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, the test chamber 1 is equipped with a cylinder 9 at the top. The cylinder 9 is existing technology and will not be described in detail here. The output end of the cylinder 9 is located at the top of the drive plate 3. The output end of the cylinder 9 will drive the drive assembly 4 to move downward, so that it can be connected to the car steering assembly, thereby driving it to rotate.

[0033] Specifically, such as Figure 1 and Figure 2 As shown, the upper end of the test chamber 1 is provided with multiple limiting sleeves 10, and each of the multiple limiting sleeves 10 is provided with a matching limiting rod 11. The bottom ends of the multiple limiting rods 11 are all set on the upper end of the drive plate 3. The multiple limiting sleeves 10 and multiple limiting rods 11 can limit the up and down movement of the drive plate 3, ensuring its stability in the test of the automotive steering assembly.

[0034] Specifically, such as Figure 2 and Figure 3 As shown, a first motor 12 is provided on one side of the upper end of the drive plate 3. The first motor 12 is existing technology and will not be described in detail here. The output end of the first motor 12 passes through the drive plate 3 and is provided with a drive wheel 13. The drive wheel 13 is meshed with the internal gear ring 7.

[0035] Through its design, the output end of the first motor 12 drives the drive wheel 13 and the internal gear ring 7 to rotate. The internal gear ring 7 drives the mounting ring 6 and the noise collection component 8 to rotate, which increases the range of noise it can collect, thereby ensuring the accuracy of the automotive steering assembly noise test device. It also limits the first motor 12 to only drive the mounting ring 6 and the noise collection component 8 to rotate in a single turn, thus avoiding the entanglement of their wiring.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, the upper end of the mounting ring 6 is provided with a snap-fit ​​ring 14 with a cross-section of "T" shape, and the bottom end of the drive plate 3 is provided with a snap-fit ​​groove that is adapted to the snap-fit ​​ring 14. The snap-fit ​​ring 14 is located in the snap-fit ​​groove and is slidably connected to the side wall of the snap-fit ​​groove. The snap-fit ​​ring 14 and the snap-fit ​​groove with a cross-section of "T" shape can limit the position of the mounting ring 6 without affecting its rotation.

[0037] Specifically, such as Figure 2As shown, an electric push rod 15 is provided on one side of the bottom end of the mounting ring 6. The electric push rod 15 is existing technology and will not be described in detail here. The output end of the electric push rod 15 is located at the upper end of the noise collection component 8. The electric push rod 15 can adjust the height of the noise collection component 8, further expanding the range of noise it can collect, thereby ensuring the accuracy of its noise test on the automotive steering assembly.

[0038] Example 2:

[0039] Please see Figure 1-4 This utility model provides a noise testing device for an automotive steering gear assembly, comprising:

[0040] Test chamber 1 and bearing plate 2;

[0041] The drive plate 3 is set inside the test chamber 1. The bottom of the drive plate 3 is provided with a drive assembly 4. Support frames 5 are provided on both sides of the upper end of the bearing plate 2 located at the bottom of the drive assembly 4.

[0042] Mounting ring 6 is located at the bottom of drive plate 3. Mounting ring 6 is located on the outside of drive assembly 4. The inner wall of mounting ring 6 is provided with internal toothed ring 7.

[0043] The noise collection component 8 is located on one side of the bottom end of the mounting ring 6, and the noise collection component 8 is located on one side of the support frame 5.

[0044] Specifically, such as Figure 2 As shown, the bottom end of the drive plate 3 is provided with a threaded rod 16, and the drive assembly 4 is provided with a threaded hole adapted to the threaded rod 16. The threaded rod 16 passes through the threaded hole and is threadedly connected to the side wall of the threaded hole. A second motor 17 is provided on one side of the bottom end of the drive plate 3. The second motor 17 is existing technology and will not be described in detail here. One end of the threaded rod 16 is set on the output end of the second motor 17.

[0045] Through its design, the output end of the second motor 17 drives the threaded rod 16 to rotate, and the threaded rod 16 drives the drive assembly 4 to move, enabling it to drive the rotation of automotive steering gear assemblies of different sizes and specifications, thereby making the automotive steering gear assembly noise testing device more applicable.

[0046] Specifically, such as Figure 2 and Figure 4 As shown, both support frames 5 are provided with multiple fixing bolts 18 at their bottom ends, and the upper end of the bearing plate 2 is provided with multiple fixing holes 19 that are compatible with the fixing bolts 18. The multiple fixing bolts 18 are located in the multiple fixing holes 19 respectively. By installing the multiple fixing bolts 18 at the bottom ends of the two support frames 5 in different fixing holes 19, the position of the two support frames 5 can be flexibly adjusted so that they can be adapted to automotive steering gear assemblies of different sizes and specifications.

[0047] See Figure 1-4When using the automotive steering assembly noise testing device, the second motor 17 needs to be started first according to the size specifications of the automotive steering assembly. The output end of the second motor 17 will drive the threaded rod 16 to rotate, and the threaded rod 16 will drive the drive assembly 4 to move. Then, the multiple fixing bolts 18 at the bottom of the two support frames 5 are respectively installed into the corresponding fixing holes 19 at the top of the bearing plate 2. The position of the two support frames 5 can be flexibly adjusted to adapt to automotive steering assemblies of different sizes. When collecting noise, the cylinder 9 needs to be started. The output end of the cylinder 9 will drive the drive plate 3 to move, and the drive plate 3 will drive the drive assembly 4 to move downwards, connecting it to the automotive steering assembly. This allows the car steering assembly to rotate. The noise collection component 8 on one side of the bottom of the drive plate 3 can collect the noise generated by the rotation of the car steering assembly. During the collection process, the first motor 12 is started. The output end of the first motor 12 will drive the drive wheel 13 to rotate. The drive wheel 13 will drive the internal gear ring 7 to rotate. The internal gear ring 7 will drive the mounting ring 6 to rotate. The mounting ring 6 will drive the noise collection component 8 to rotate, expanding the range of noise it can collect. Then, the electric push rod 15 is started. The output end of the electric push rod 15 will drive the noise collection component 8 to move up and down, further improving the range of noise collection, thereby ensuring the accuracy of the car steering assembly noise test device.

[0048] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing noise of a steering gear assembly of an automobile, characterized by comprising: include: Test chamber (1) and bearing plate (2); A drive plate (3) is set inside the test chamber (1). The bottom end of the drive plate (3) is provided with a drive assembly (4). Support frames (5) are provided on both sides of the upper end of the bearing plate (2) located at the bottom end of the drive assembly (4). A mounting ring (6) is provided at the bottom of the drive plate (3). The mounting ring (6) is located outside the drive assembly (4). The inner wall of the mounting ring (6) is provided with an internal toothed ring (7). A noise collection component (8) is disposed on one side of the bottom end of the mounting ring (6), and the noise collection component (8) is located on one side of the support frame (5).

2. The noise test device for a steering gear assembly of an automobile according to claim 1, characterized in that: The test chamber (1) is equipped with a cylinder (9) at the upper end, and the output end of the cylinder (9) is located at the upper end of the drive plate (3).

3. The automotive steering gear assembly noise testing device according to claim 1, characterized in that: The test chamber (1) is provided with multiple limiting sleeves (10) at the upper end, and each of the multiple limiting sleeves (10) is provided with a matching limiting rod (11), and the bottom of each of the multiple limiting rods (11) is provided at the upper end of the drive plate (3).

4. The automotive steering gear assembly noise testing device according to claim 1, characterized in that: The drive plate (3) has a first motor (12) on one side of its upper end. The output end of the first motor (12) passes through the drive plate (3) and is provided with a drive wheel (13). The drive wheel (13) is meshed with the internal gear ring (7).

5. The automotive steering gear assembly noise testing device according to claim 1, characterized in that: The upper end of the mounting ring (6) is provided with a snap ring (14) with a cross-section in the shape of "T". The bottom end of the drive plate (3) is provided with a snap groove that is adapted to the snap ring (14). The snap ring (14) is located in the snap groove and is slidably connected to the side wall of the snap groove.

6. The automotive steering gear assembly noise testing device according to claim 1, characterized in that: An electric push rod (15) is provided on one side of the bottom end of the mounting ring (6), and the output end of the electric push rod (15) is located on the upper end of the noise collection assembly (8).

7. The automotive steering gear assembly noise testing device according to claim 1, characterized in that: The drive plate (3) has a threaded rod (16) at its bottom end. The drive assembly (4) has a threaded hole that is adapted to the threaded rod (16). The threaded rod (16) passes through the threaded hole and is threaded to the side wall of the threaded hole. A second motor (17) is provided on one side of the bottom end of the drive plate (3). One end of the threaded rod (16) is located on the output end of the second motor (17).

8. The automotive steering gear assembly noise testing device according to claim 1, characterized in that: Both of the support frames (5) are provided with multiple fixing bolts (18) at their bottom ends. The upper end of the bearing plate (2) is provided with multiple fixing holes (19) that are compatible with the fixing bolts (18). The multiple fixing bolts (18) are located in the multiple fixing holes (19).

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