Testing tool

Abstract

The utility model discloses a test tool. The testing tool comprises a supporting structure, a mounting structure, a control module and an adjusting assembly, wherein the adjusting assembly comprises a guide column, an elastic piece and an adjusting piece; the guide column is fixed on the supporting structure, the mounting structure is arranged on the guide column, an accommodating space is formed between the mounting structure and the supporting structure and is used for placing a to-be-tested product, and the control module is used for controlling the to-be-tested product; the elastic piece is arranged on the guide column and located on the side, away from the supporting structure, of the installation structure, the adjusting piece is movably assembled on the guide column in the axial direction of the guide column and used for pressing or loosening the elastic piece, and the axial direction of the guide column is the first direction. When the test tool provided by the utility model is applied to the steering wheel, different load performance tests of the steering wheel can be realized, and the test difficulty is reduced.

Description

Technical Field

[0001] This application belongs to the field of testing equipment technology, specifically relating to a testing fixture. Background Technology

[0002] The steering wheel is an electromechanical integrated product that combines two sets of electric drive wheel mechanisms and a steering feedback unit. It can achieve movement in any direction within a two-dimensional plane, including zero turning radius, lateral movement, straight movement, and lateral movement. After the steering wheel is assembled, it needs to be functionally tested. Existing testing fixtures typically use load blocks of different weights to test the load performance of the steering wheel, which makes the test relatively complex and involves many test components. Utility Model Content

[0003] This application aims to provide a testing fixture that addresses at least one of the problems in the background art.

[0004] According to a first aspect of this application, a test fixture is provided, comprising:

[0005] The system includes a support structure, an installation structure, a control module, and an adjustment assembly, wherein the adjustment assembly includes a guide post, an elastic element, and an adjustment element.

[0006] The guide post is fixed to the support structure, the mounting structure is disposed on the guide post and forms a receiving space between the guide post and the support structure, the receiving space is used to place the test sample, and the control module is used to control the test sample;

[0007] The elastic element is disposed on the guide post and located on the side of the mounting structure away from the support structure. The adjusting element is movably assembled on the guide post along the axial direction of the guide post and is used to tighten or loosen the elastic element. The axial direction of the guide post is a first direction.

[0008] Optionally, the adjustment assembly further includes a linear bearing, and the mounting structure is movably mounted on the guide post along the first direction via the linear bearing.

[0009] Optionally, the adjustment assembly further includes a transition sleeve, which is movably sleeved on the guide post along the first direction and sandwiched between the elastic member and the mounting structure.

[0010] Optionally, the guide post includes a threaded section and a smooth axis section, the adjusting member and the elastic member are respectively located in the threaded section, and the transition sleeve is located at the junction of the threaded section and the smooth axis section.

[0011] Optionally, the adjustment assembly further includes an anti-loosening element, which is movably mounted on the guide post along the first direction to restrict the axial movement of the adjustment element on the guide post.

[0012] Optionally, the adjustment assembly further includes a base, the base being provided with mounting holes, and the guide post being fixed in the mounting holes by fasteners;

[0013] The support structure is provided with an assembly groove, the base is fixed to the support structure, and part of the structure is embedded in the assembly groove.

[0014] Optionally, the support structure is a support plate, and the support plate is provided with a plurality of first mounting holes spaced at a predetermined interval, the plurality of first mounting holes being used to assemble obstacle blocks.

[0015] Optionally, the multiple first mounting holes are divided into multiple groups, with the first mounting holes in each group arranged at equal angles and spacings, for mounting different types of obstacle blocks.

[0016] Optionally, the mounting structure is a mounting plate, which is provided with a plurality of second mounting holes spaced at a predetermined interval, the plurality of second mounting holes being used to fix the test sample.

[0017] Optionally, the test fixture further includes a load-bearing frame, the support structure is fixed to the load-bearing frame, and a shock-absorbing structure is provided on the side of the load-bearing frame away from the support structure.

[0018] Optionally, the control module is located on the side of the mounting structure away from the supporting structure.

[0019] Optionally, multiple sets of the adjustment components are provided, and the multiple sets of adjustment components are distributed at intervals around the periphery of the mounting structure.

[0020] The test fixture provided in this application places the test sample in the accommodating space formed between the support structure and the mounting structure. Then, by setting adjustment components on the support structure and the mounting structure, the adjustment components can tighten or loosen the elastic element to subject the test sample to different loads. When the test fixture is applied to the steering wheel, it can test different loads on the steering wheel by combining with the control module. The performance testing method is simple and has few parts.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the test fixture provided in this application;

[0024] Figure 2 This is an assembly diagram of the adjustment components;

[0025] Figure 3 This is a cross-sectional view of the adjustment component;

[0026] Figure 4 This is a test diagram of the differential steering wheel.

[0027] Figure label:

[0028] 1. Support structure; 11. Assembly slot; 12. First mounting hole; 2. Mounting structure; 21. Second mounting hole; 3. Control module; 4. Adjustment component; 41. Guide post; 411. Threaded section; 412. Optical shaft section; 42. Elastic element; 43. Adjusting element; 44. Linear bearing; 45. Transition sleeve; 46. Anti-loosening element; 47. Base; 471. Assembly hole; 48. Fastener; 5. Bearing frame; 6. Vibration damping structure; 7. Test sample; 8. Obstacle block. Detailed Implementation

[0029] Embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application are within the scope of protection of this application.

[0030] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] like Figures 1 to 4 As shown, this application provides a testing fixture, including a support structure 1, an installation structure 2, a control module 3, and an adjustment component 4. The adjustment component 4 includes a guide post 41, an elastic element 42, and an adjustment element 43. The guide post 41 is fixed to the support structure 1, the installation structure 2 is disposed on the guide post 41, and a receiving space is formed between the installation structure 2 and the support structure 1. The receiving space is used to place the test sample 7, and the control module 3 is used to control the test sample 7. The elastic element 42 is disposed on the guide post 41 and is located on the side of the installation structure 2 away from the support structure 1. The adjustment element 43 is movably assembled on the guide post 41 along the axial direction of the guide post 41 and is used to tighten or loosen the elastic element 42. The axial direction of the guide post 41 is a first direction (the X direction in the figure).

[0034] Specifically, the testing fixture provided in this application can be applied to steering wheels, with a differential steering wheel as an example of the test product in this application. The testing fixture includes a support structure 1 capable of supporting the test product 7, a mounting structure 2 for mounting the test product 7, an adjustment component 4 for adjusting the load applied to the mounting structure 2 and the test product 7, and a control module 3 for controlling the working state of the test product. This allows the testing fixture, when applied to the testing of differential steering wheels, to achieve the purpose of testing the steering wheel's performance under different loads by adjusting the load, such as testing the tire life and steering performance of the differential steering wheel under different loads.

[0035] In the above structure, the load size adjustment is achieved in the following way: The test sample 7 is placed in the receiving space formed between the support structure 1 and the mounting structure 2, and is fixedly mounted on the mounting structure 2, so that the load applied to the mounting structure 2 can be transmitted to the test sample 7. The adjustment component 4 passes through the mounting structure 2 and is fixed to the support structure 1, so that when the adjustment component 43 moves towards the side closer to the mounting structure 2 in the first direction, the load applied to the mounting structure 2 can be increased by pressing the elastic component 42, and when the adjustment component 43 moves away from the mounting structure 2 in the first direction, the load applied to the mounting structure 2 can be decreased by loosening the elastic component 42. This achieves the purpose of pressing or loosening the load applied to the test sample 7 connected to the mounting structure 2, and thus testing the load-bearing capacity of the test sample 7.

[0036] The elastic element 42 can be a spring, and the specific load can be calculated by the spring compression: compression × spring Hooke's constant × n = pressure, where n is the number of spring sets. The specific design is matched to the number of sets in the adjustment assembly 4, and no limitation is imposed here. Adjusting the load by the spring compression simplifies the structure and number of parts in the testing fixture, reduces testing difficulty, and improves testing accuracy and reliability.

[0037] In addition, in practical applications, the control module 3 is electrically connected to the differential steering wheel, enabling the control module 3 to control the two motors of the differential steering wheel to realize its steering function, thereby realizing the testing of the steering ability of the differential steering wheel under different loads. In addition, the control module 3 can also control the working status of the angle detection module in the differential steering wheel to detect the accuracy of the steering angle, thereby achieving the purpose of testing multiple performance aspects of the differential steering wheel.

[0038] Optionally, such as Figures 2 to 3 As shown, the adjustment assembly 4 also includes a linear bearing 44, and the mounting structure 2 is movably mounted on the guide post 41 along the first direction via the linear bearing 44.

[0039] Specifically, the linear bearing 44 is a mechanical component used to achieve linear motion, typically used in conjunction with a linear guide or shaft. It converts sliding friction into rolling friction by having rolling elements (such as steel balls or rollers) roll on the surface of the guide or shaft, thereby reducing motion resistance and achieving high-precision, low-friction linear motion. In this embodiment, the linear bearing 44, through its cooperation with the guide post 41 (shaft), allows the mounting structure 2 to move along the resulting axial direction (first direction). This enables the force applied when the adjusting member 43 tightens or loosens the elastic member 42 to be applied to the differential steering wheel via the mounting structure 2, thus achieving the purpose of adjusting the load.

[0040] Optionally, such as Figures 2 to 3 As shown, the adjustment assembly 4 also includes a transition sleeve 45, which is movably sleeved on the guide post 41 along the first direction and sandwiched between the elastic member 42 and the mounting structure 2.

[0041] Specifically, in practical applications, the size of differential steering wheels varies. Existing technologies require different testing fixtures to perform performance tests on differential steering wheels of different sizes. However, this application addresses this by providing a transition sleeve 45 between the elastic element 42 and the mounting structure 2, enabling adjustment of the accommodating space size. That is, by assembling transition sleeves of different heights at this location, the size of the accommodating space can be increased or decreased, improving the applicability of the testing fixture for performance testing of differential steering wheels of different sizes.

[0042] Optionally, such as Figure 3As shown, the guide post 41 includes a threaded section 411 and a smooth axis section 412. The adjusting member 43 and the elastic member 42 are located in the threaded section 411, and the transition sleeve 45 is located at the junction of the threaded section 411 and the smooth axis section 412.

[0043] Specifically, in one embodiment, the adjusting member 43 can be a nut, and the threaded section 411 is used to assemble the adjusting member 43, allowing the adjusting member 43 to be movably assembled onto the guide post 41 via the threaded section 411, thereby achieving the purpose of tightening or loosening the elastic member 42. The optical axis section 412 is used to facilitate the movable connection of the guide post 41 to the mounting structure 2 via a linear bearing 44 or other structural components, thereby achieving adjustment of the load. In this embodiment, the transition sleeve 45 is located at the junction of the threaded section 411 and the optical axis section 412, which avoids interference between the elastic member 42 and the optical axis section 412, ensuring the smoothness of the elastic member 42 during adjustment.

[0044] Optionally, such as Figures 2 to 3 As shown, the adjustment assembly 4 also includes an anti-loosening element 46, which is movably mounted on the guide post 41 along the first direction to limit the axial movement of the adjustment element 43 on the guide post 41.

[0045] Specifically, in this embodiment, the anti-loosening component 46 ensures that after the compression of the elastic component 42 is adjusted, the adjusting component 43 remains in its current position without moving, improving the working reliability of the adjusting component 43 and thus ensuring the accuracy of the test fixture. Both the adjusting component 43 and the anti-loosening component 46 can be implemented using nuts, and the guide post 41 is threaded at the assembly points with both the anti-loosening component 46 and the adjusting component 43. This simplifies the structure of the anti-loosening component 46 and the adjusting component 43 and facilitates the adjustment of the load.

[0046] Optionally, such as Figures 2 to 3 As shown, the adjustment component 4 also includes a base 47, which is provided with an assembly hole 471. The guide post 41 is fixed in the assembly hole 471 by a fastener 48. The support structure 1 is provided with an assembly groove 11, and the base 47 is fixed on the support structure 1, with part of the structure embedded in the assembly groove 11.

[0047] Specifically, in this embodiment, the base 47 facilitates the fixing of the guide post 41 to the support structure 1, and the mounting hole 471 on the base 47 improves the reliability and convenience of the connection between the guide post 41 and the base 47. That is, the bottom of the guide post 41 can be provided with a connection hole, allowing the guide post 41 and the base 47 to be connected together using fasteners 48, facilitating assembly and disassembly. Furthermore, the mounting groove 11 provided on the support structure 1 facilitates the positioning of the base 47, and the partial structure of the base 47 is embedded in the mounting groove 11, which also improves the reliability of the connection. The connection between the base 47 and the support structure 1 can also be fixed using fasteners 48.

[0048] Optionally, such as Figure 1 and Figure 4 As shown, the support structure 1 is a support plate, and the support plate is provided with a plurality of first mounting holes 12 at a predetermined interval. The plurality of first mounting holes 12 are used to assemble the obstacle block 8.

[0049] Specifically, in this embodiment, the multiple mounting holes 471 provided on the support plate can be used to mount the obstacle blocks 8. The specific thickness, size and setting position of the obstacle blocks 8 can be realized by the setting position and arrangement of the multiple first mounting holes 12, thereby realizing the installation and fixing of different obstacle blocks 8 to simulate the real use environment of the differential steering wheel. When the differential steering wheel is steering under the control of the control module 3, its tires can pass through one or more obstacle blocks 8, so that the service life of the differential steering wheel tires can be detected, further increasing the testing capability of the test fixture.

[0050] Optionally, such as Figure 1 and Figure 4 As shown, multiple first mounting holes 12 are divided into multiple groups, and the first mounting holes 12 in each group are arranged at equal angles and spacings for installing different types of obstacle blocks 8.

[0051] Specifically, in this embodiment, reference is made to... Figure 1 The distribution of the obstacle blocks 8, the spacing and angle of the first mounting holes 12, etc., can be adjusted according to actual needs. This is at the center and edge of the mounting plate, enabling the assembly of multiple obstacle blocks 8 with different positions, sizes, and thicknesses. This allows for flexible adjustment of the obstacle block 8 model to meet different testing requirements of the differential steering wheel and improves the testing capability of the testing fixture.

[0052] Optionally, such as Figure 1 and Figure 4 As shown, the mounting structure 2 is a mounting plate, which is provided with a plurality of second mounting holes 21 at predetermined intervals. The plurality of second mounting holes 21 are used to fix the test sample 7.

[0053] Specifically, in this embodiment, the mounting plate has multiple second mounting holes 21 for mounting the differential steering wheel, so that the load force applied to the mounting plate can be transmitted to the differential steering wheel, thereby realizing the differential steering wheel's load-bearing capacity for different loads. The second mounting holes 21 are typically connected to the outer or inner ring of the differential steering wheel's slewing bearing; therefore, the multiple second mounting holes 21 can be designed in a ring shape to improve installation reliability.

[0054] Optionally, such as Figure 1 and Figure 4As shown, the test fixture also includes a load-bearing frame 5, a support structure 1 fixed to the load-bearing frame 5, and a shock-absorbing structure 6 provided on the side of the load-bearing frame 5 away from the support structure 1.

[0055] Specifically, in practical applications, the test fixture generates significant vibration and noise. The support frame 5 ensures that the entire test fixture can be stably fixed in the test position, while the damping structure 6 reduces environmental noise and lowers the requirements for the test environment.

[0056] In one embodiment, the support structure is welded to the load-bearing frame 5, which is rectangular. The simulation structure uses four anti-vibration pads, which are respectively set at the four corners of the load-bearing frame 5 to improve the stability of the load and reduce noise.

[0057] Optionally, such as Figure 1 and Figure 4 As shown, the control module 3 is located on the side of the mounting structure 2 away from the support structure 1.

[0058] Specifically, in this embodiment, the control module 3 may include two drivers, which are respectively connected to the two motors of the differential steering wheel. The control module 3 is also connected to the angle detection module of the differential steering wheel. The control module 3 is set on the side of the mounting structure 2 away from the support structure 1, that is, on the top of the mounting structure 2, so that the tester can easily control the operation of the differential steering wheel and view the test results, etc., which improves the operational convenience of the test fixture.

[0059] Optionally, such as Figure 1 and Figure 4 As shown, multiple sets of adjustment components 4 are provided, and the multiple sets of adjustment components 4 are distributed at intervals around the periphery of the mounting structure 2.

[0060] Specifically, in practical applications, the adjustment component 4 can be set as one or more groups according to actual needs, and its setting position can be set according to actual needs. For example, when only one group of adjustment component 4 is set, it can pass through the mounting structure 2 and be set at the center of the mounting structure 2. When four groups of adjustment component 4 are set, they can be set at the four right-angle positions of the mounting structure 2, where the mounting structure 2 can be a rectangular mounting plate; and when the mounting structure 2 is a circular or other shaped mounting plate, multiple groups of adjustment component 4 can also be evenly distributed at intervals around the periphery of the mounting structure 2, improving the assembly flexibility of the test fixture.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A testing fixture, characterized in that, include: The system includes a support structure, an installation structure, a control module, and an adjustment assembly, wherein the adjustment assembly includes a guide post, an elastic element, and an adjustment element. The guide post is fixed to the support structure, the mounting structure is disposed on the guide post and forms a receiving space between the guide post and the support structure, the receiving space is used to place the test sample, and the control module is used to control the test sample; The elastic element is disposed on the guide post and located on the side of the mounting structure away from the support structure. The adjusting element is movably assembled on the guide post along the axial direction of the guide post and is used to tighten or loosen the elastic element. The axial direction of the guide post is a first direction.

2. The test fixture according to claim 1, characterized in that, The adjustment assembly also includes a linear bearing, and the mounting structure is movably mounted on the guide post along the first direction via the linear bearing.

3. The testing fixture according to claim 1, characterized in that, The adjustment assembly further includes a transition sleeve, which is movably sleeved on the guide post along the first direction and sandwiched between the elastic element and the mounting structure.

4. The testing fixture according to claim 3, characterized in that, The guide post includes a threaded section and a smooth axis section. The adjusting member and the elastic member are respectively located in the threaded section, and the transition sleeve is located at the junction of the threaded section and the smooth axis section.

5. The testing fixture according to claim 1, characterized in that, The adjustment assembly further includes an anti-loosening element, which is movably mounted on the guide post along the first direction to restrict the axial movement of the adjustment element on the guide post.

6. The test fixture according to claim 1, characterized in that, The adjustment assembly also includes a base, the base being provided with mounting holes, and the guide post being fixed in the mounting holes by fasteners; The support structure is provided with an assembly groove, the base is fixed to the support structure, and part of the structure is embedded in the assembly groove.

7. The test fixture according to claim 1, characterized in that, The support structure is a support plate, and the support plate is provided with a plurality of first mounting holes spaced at a predetermined interval. The plurality of first mounting holes are used to assemble obstacle blocks.

8. The test fixture according to claim 7, characterized in that, The first mounting holes are divided into multiple groups, and the first mounting holes in each group are arranged at equal angles and spacings for installing different types of obstacle blocks.

9. The test fixture according to claim 1, characterized in that, The mounting structure is a mounting plate, which has a plurality of second mounting holes spaced at predetermined intervals. The plurality of second mounting holes are used to fix the test sample.

10. The test fixture according to claim 1, characterized in that, It also includes a load-bearing frame, the support structure is fixed to the load-bearing frame, and a shock-absorbing structure is provided on the side of the load-bearing frame away from the support structure.

11. The test fixture according to claim 1, characterized in that, The control module is located on the side of the mounting structure away from the supporting structure.

12. The test fixture according to claim 1, characterized in that, Multiple sets of adjustment components are provided, and the multiple sets of adjustment components are distributed at intervals around the periphery of the mounting structure.

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