A driveshaft testing system and method

Abstract

The present application relates to the technical field of bearing test, in particular to a kind of transmission shaft test system and method.Transmission shaft test system includes extrusion assembly, test component, positioning assembly.Extrusion assembly includes drive unit, extrusion module;The extrusion module includes first extrusion part, second extrusion part, connecting part.Test component includes pipe unit, sheet unit;The pipe unit includes tube, avoidance module;The avoidance module is through the sidewall of the tube;The sheet unit includes arc sheet body, first protrusion, second protrusion;The arc sheet body is fixed by welding with the tube through the first protrusion, the second protrusion;The test state of the transmission shaft test system includes: the drive unit drives the extrusion module to pass through the avoidance module and load to the arc sheet body The arc sheet body is separated from the tube.Such that it has solved the problem that the balance sheet firmness test result is not accurate.

Description

Technical Field

[0001] This invention relates to the field of bearing testing technology, and more specifically, to a transmission shaft testing system and method. Background Technology

[0002] In the production and assembly of drive shafts, to ensure stable dynamic balance during actual operation, balance plates need to be welded onto the drive shaft, and their firmness needs to be tested. During testing, a test tube simulates the drive shaft's structure, and the balance plates are welded and fixed to their corresponding positions within the test tube, thus creating a testing foundation similar to the actual drive shaft structure. During testing, an external force is applied to the welded balance plates using a pressing assembly, with the applied load gradually increasing until the balance plates detach from the surface of the test tube. The load value required for the balance plates to detach is recorded. Finally, the firmness of the balance plates is determined based on this recorded load value, thus assessing the weld strength of the balance plates.

[0003] However, in actual implementation, when the extrusion assembly applies a load to the balance plate, the balance plate itself will undergo corresponding deformation. This deformation process will directly absorb part of the load applied by the extrusion assembly, resulting in the load not being able to fully act on the welded joint between the balance plate and the test tube. This causes the recorded detachment load value to be inaccurate and cannot truly reflect the actual firmness of the balance plate. Summary of the Invention

[0004] To address the problem of inaccurate results in balance plate stability tests, this invention provides a transmission shaft testing system and method.

[0005] In a first aspect, the drive shaft testing system provided by the present invention includes:

[0006] An extrusion assembly includes a drive unit and an extrusion module; the extrusion module includes a first extrusion section, a second extrusion section, and a connecting section; the first extrusion section, the second extrusion section, and the connecting section are respectively drivenly connected to the drive unit; the first extrusion section and the second extrusion section are distributed on opposite sides of the connecting section;

[0007] The test assembly includes a tube unit and a sheet unit; the tube unit includes a tube body and an avoidance module; the avoidance module penetrates the side wall of the tube body; the sheet unit includes an arc sheet body, a first protrusion, and a second protrusion; the first protrusion and the second protrusion are respectively connected to the same side of the arc sheet body; the arc sheet body is welded and fixed to the tube body through the first protrusion and the second protrusion; the projections of the first protrusion and the second protrusion along the radial direction of the tube body are respectively located on opposite sides of the avoidance module;

[0008] Positioning components;

[0009] The test states of the transmission shaft test system include: the outer wall of the tube abuts against the positioning component; the driving unit drives the extrusion module to pass through the avoidance module and apply a load to the arc plate body until the arc plate body detaches from the tube body; the first extrusion part is located on the side of the connecting part near the first protrusion; the second extrusion part is located on the side of the connecting part near the second protrusion; f1 > f, f2 > f; where f1 is the load applied to the arc plate body by the first extrusion part, f2 is the load applied to the arc plate body by the second extrusion part, and f is the load applied to the arc plate body by the connecting part.

[0010] Optionally, the surface on which the first extrusion part applies load to the arc plate body is arranged along the circumference of the first protrusion.

[0011] Optionally, the surface on which the second extrusion part applies load to the arc plate body is arranged along the circumference of the second protrusion.

[0012] Optionally, the pipe unit further includes a second guide hole, which penetrates the side wall of the pipe body and is disposed opposite to the avoidance module;

[0013] The test state also includes: the driving unit drives the extrusion module to pass through the second guide hole and the avoidance module in sequence to apply a load to the arc plate body.

[0014] Optionally, the positioning component includes a positioning unit and a guiding unit; the positioning unit includes a positioning seat and a clearance groove; the guiding unit includes a guide seat and a first guide hole; the clearance groove is recessed on the surface of the positioning seat; the guide seat is connected to the positioning seat; the first guide hole penetrates the guide seat;

[0015] The test state also includes: the outer wall of the tube abuts against the positioning seat, at least part of the arc plate is located in the clearance groove, and the extrusion module applies load to the arc plate by passing through the first guide hole, the second guide hole and the clearance module in sequence.

[0016] Optionally, the positioning unit further includes a positioning arc portion; the positioning arc portion is formed by a recess on the surface of the positioning seat.

[0017] The test state also includes: the outer wall of the tube abutting against the positioning arc.

[0018] Optionally, the positioning component further includes a limiting unit; the limiting unit includes a hole limiting module, the hole limiting module includes a limiting shaft and a limiting plate; the limiting plate is connected to one end of the limiting shaft; the number of the first guide holes is multiple; the number of the second guide holes is multiple;

[0019] The test state also includes: the limiting shaft passing through one first guide hole and one second guide hole in sequence, the limiting plate abutting against the outer wall of the tube body, the extrusion module passing through another first guide hole and another second guide hole in sequence, and the avoidance module applying a load to the arc plate body; wherein, the limiting unit is spaced apart from the extrusion module.

[0020] Optionally, in the test state: a < b; where a is the maximum distance between the limiting shaft and the wall of the first guide hole, and b is the maximum distance between the limiting shaft and the wall of the second guide hole.

[0021] Optionally, c > d; where c is the outer diameter of the limiting shaft within the area surrounded by the first guide hole in the test state, and d is the outer diameter of the limiting shaft within the area surrounded by the second guide hole in the test state.

[0022] Optionally, the avoidance module includes a first side through hole, a second side through hole, and a central through hole; the first side through hole and the second side through hole are distributed on opposite sides of the central through hole;

[0023] The shape of the first extrusion part is adapted to the shape of the first side through hole; the shape of the second extrusion part is adapted to the shape of the second side through hole; the shape of the connecting part is adapted to the shape of the central through hole;

[0024] The test state also includes: the driving unit drives the extrusion module to apply a load to the arc plate body by passing the first extrusion part through the first side through hole, while the second extrusion part applies a load to the arc plate body by passing through the second side through hole.

[0025] Secondly, the drive shaft testing method provided by the present invention is used in any of the drive shaft testing systems described in the first aspect, and the drive shaft testing method includes:

[0026] The arc plate is welded and fixed to the tube body through the first protrusion and the second protrusion to form a test assembly;

[0027] The test component is positioned when the positioning component reaches the positioning state; wherein, the positioning state includes the outer wall of the tube abutting against the positioning component;

[0028] The drive unit drives the extrusion module through the avoidance module to abut against the arc plate body;

[0029] The driving unit causes the extrusion module to apply a gradually increasing load to the arc plate until the arc plate separates from the tube, and the test data is recorded.

[0030] Optionally, the step involves the driving unit causing the extrusion module to apply a gradually increasing load to the arc-shaped plate until the arc-shaped plate separates from the tube, and recording the test data.

[0031] The extrusion module applies a gradually increasing load to the arc plate body. The first extrusion part and the second extrusion part apply gradually increasing loads to the arc plate body respectively, and the connecting part is spaced apart from the arc plate body.

[0032] To address the problem of inaccurate results in balance plate stability tests, this invention offers the following advantages:

[0033] An extrusion assembly comprising a drive unit, an extrusion module with a first extrusion section, a second extrusion section, and a connecting section; a test assembly comprising a tube unit with a tube body and a clearance module, a plate unit with an arc plate body, a first protrusion, and a second protrusion; and a positioning assembly constitutes a drive shaft test system. The outer wall of the tube body abuts against the positioning assembly. The drive unit drives the extrusion module through the clearance module to apply a load to the arc plate body. The first and second extrusion sections are respectively positioned on the connecting section near the first and second protrusions, and the loads applied by the first and second extrusion sections to the arc plate body are both greater than the load applied by the connecting section to the arc plate body. This ensures that the load applied by the extrusion module is precisely applied to the arc plate body and the tube body. The welding of the first and second protrusions prevents loads from being applied to the main body of the arc plate between them, reducing the absorption of loads by the deformation of the main body of the arc plate under stress. This allows the applied load to directly reflect the strength of the weld joint. At the same time, the positioning component restricts the displacement and shaking of the tube under stress, ensuring the stability of the tube position during the test. This eliminates the interference of arc plate deformation on the test results, ultimately solving the problem in traditional drive shaft balance plate weld strength testing where the load value of the detached plate is deviated due to the load absorption by the balance plate deformation, and cannot truly reflect the actual strength of the balance plate. This improves the authenticity of the drive shaft balance plate weld strength test data and the reliability of the test results. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a drive shaft testing system according to one embodiment;

[0035] Figure 2 for Figure 1 A schematic diagram of the positioning component and the testing component;

[0036] Figure 3 for Figure 2 Schematic diagram of the structure of the extrusion module and the sheet unit;

[0037] Figure 4 for Figure 2 Schematic diagram of the structure of the middle limit unit and the test assembly;

[0038] Figure 5 for Figure 2 A schematic diagram of the positioning unit in the middle;

[0039] Figure 6 for Figure 2 Schematic diagram of the central hole limiting module;

[0040] Figure 7 for Figure 2 Schematic diagram of the middle tube unit;

[0041] Figure 8 for Figure 3 Schematic diagram of the middle-section unit;

[0042] Figure 9 for Figure 7 Enlarged view of part A in the middle;

[0043] Figure 10 for Figure 3 A schematic diagram of the structure of the extrusion module;

[0044] Figure 11 This is a flowchart of a transmission shaft testing method according to one embodiment.

[0045] Figure label:

[0046] 10. Extrusion assembly; 11. Base unit; 12. Drive unit; 13. Extrusion unit; 131. First force transmission rod; 132. Second force transmission rod; 133. Extrusion module; 1331. First extrusion section; 1332. Second extrusion section; 1333. Connecting part; 20. Positioning assembly; 21. Positioning unit; 211. Positioning seat; 212. Positioning arc; 213. Clearance groove; 22. Limiting unit; 221. Side limiting part; 222. Hole limiter Position module; 2221, limiting shaft; 2222, limiting plate; 23, guide unit; 231, guide seat; 232, first guide hole; 30, test assembly; 31, tube unit; 311, tube body; 312, avoidance module; 3121, central through hole; 3122, first side through hole; 3123, second side through hole; 313, second guide hole; 32, plate unit; 321, arc plate body; 322, first protrusion; 323, second protrusion. Detailed Implementation

[0047] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0048] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0049] During the testing of the welded fixing structure between the arc plate and the tube by the transmission shaft testing system, when the extrusion component applies a load to the arc plate to detach it from the tube, the arc plate will undergo corresponding deformation. This deformation process will directly absorb part of the load applied by the extrusion component, resulting in the load applied by the extrusion component not being able to fully act on the welded joint between the arc plate and the tube. Consequently, the recorded load value required for the arc plate to detach from the tube will be inaccurate, failing to truly reflect the actual weld strength between the arc plate and the tube, and making it difficult to accurately determine whether the weld strength between the arc plate and the tube meets the corresponding testing standards.

[0050] Example 1:

[0051] This embodiment proposes a transmission shaft testing system, such as... Figure 1As shown, the drive shaft testing system includes an extrusion assembly 10, a testing assembly 30, and a positioning assembly 20.

[0052] like Figure 1 and Figure 10 As shown, the extrusion assembly 10 includes a drive unit 12 and an extrusion module 133. The extrusion module 133 includes a first extrusion part 1331, a second extrusion part 1332, and a connecting part 1333. The first extrusion part 1331, the second extrusion part 1332, and the connecting part 1333 are respectively drivenly connected to the drive unit 12. The first extrusion part 1331 and the second extrusion part 1332 are distributed on opposite sides of the connecting part 1333. The drive unit 12 can provide a stable driving force to the extrusion module 133, ensuring the stability of the testing process.

[0053] like Figure 4 As shown, the test assembly 30 includes a tube unit 31 and a chip unit 32; as Figure 7 As shown, the pipe unit 31 includes a pipe body 311 and an obstacle avoidance module 312; the obstacle avoidance module 312 penetrates the side wall of the pipe body 311; as Figure 8 As shown, the plate unit 32 includes an arc plate body 321, a first protrusion 322, and a second protrusion 323; the first protrusion 322 and the second protrusion 323 are respectively connected to the same side of the arc plate body 321; the arc plate body 321 is welded and fixed to the tube body 311 through the first protrusion 322 and the second protrusion 323. Welding the arc plate body to the tube body in this way can simulate the welding and fixing of the balance plate to the drive shaft, and subsequent tests can truly reflect the firmness of the balance plate welding and fixing to the drive shaft.

[0054] The projections of the first protrusion 322 and the second protrusion 323 along the radial direction of the tube body 311 are located on opposite sides of the avoidance module 312. When the load applied by the extrusion module 133 acts on the position between the first protrusion 322 and the second protrusion 323 on the arc plate body 321, the arc plate body 321 is prone to deformation. The first extrusion section 1331 and the second extrusion section 1332 are spaced apart and correspond to the first protrusion 322 and the second protrusion 323 of the test component 30, respectively. The plate unit 32 is welded and fixed to the tube body 311 by the first protrusion 322 and the second protrusion 323. This ensures that the load applied by the extrusion module 133 can be accurately applied to the first protrusion 322 and the second protrusion 323 that are welded and fixed to the tube body 311. This ensures that the load applied by the extrusion module 133 is mainly used to separate the arc plate body 321 from the tube unit 31, and avoids the load applied by the extrusion module 133 from acting on the position between the first protrusion 322 and the second protrusion 323 on the arc plate body 321. This reduces or even avoids the deformation of the arc plate body 321 due to force, which absorbs the load. This allows the applied load to directly reflect the strength of the welded joint, eliminates the interference of the deformation of the arc plate body 321 on the test results, and ensures that the test data is true and accurate.

[0055] The positioning component 20 can be used to abut against the outer wall of the tube body 311 to fix the tube body 311 in the test state, prevent the tube body 311 from being displaced or shaking under force, ensure the stability of the position of the tube body 311 when the extrusion component 10 applies load, and improve the reliability of the test results.

[0056] The test state of the transmission shaft test system includes: the outer wall of the tube 311 abuts against the positioning component 20, the drive unit 12 drives the extrusion module 133 to pass through the avoidance module 312 to apply a load to the arc plate body 321 until the arc plate body 321 detaches from the tube 311, the first extrusion part 1331 is located on the side of the connecting part 1333 near the first protrusion 322, the second extrusion part 1332 is located on the side of the connecting part 1333 near the second protrusion 323, f1>f, f2>f; where f1 is the load applied by the first extrusion part 1331 to the arc plate body 321, f2 is the load applied by the second extrusion part 1332 to the arc plate body 321, and f is the load applied by the connecting part 1333 to the arc plate body 321. The load relationship f1>f and f2>f ensures that the main load applied by the extrusion module 133 is concentrated at the welding points of the first protrusion 322 and the second protrusion 323, reducing the load interference generated by the connection part 1333. This allows the load applied by the extrusion module 133 to truly reflect the welding strength between the arc plate body 321 and the tube body 311, avoiding test result distortion caused by the deformation of the balance plate, and improving test accuracy and reliability.

[0057] Furthermore, such as Figure 3 As shown, the surface on which the first extrusion part 1331 applies load to the arc plate body 321 is arranged along the circumference of the first protrusion 322. This ensures that the action surface of the first extrusion part 1331 matches the circumferential contour of the first protrusion 322, and the load applied by the first extrusion part 1331 is evenly distributed along the circumference of the first protrusion 322. This ensures that the load applied by the first extrusion part 1331 can act evenly and stably on the welding joint area between the first protrusion 322 and the tube body 311, making the load transfer more direct and reliable. This avoids uneven load transfer that could lead to local deformation of the arc plate body 321, thus ensuring the stability of the test results.

[0058] Furthermore, the surface on which the second extrusion part 1332 applies load to the arc plate body 321 is arranged along the circumference of the second protrusion 323. This ensures that the action surface of the second extrusion part 1332 is adapted to the circumferential contour of the second protrusion 323, and the load applied by the second extrusion part 1332 is evenly distributed along the circumference of the second protrusion 323. This guarantees that the load applied by the second extrusion part 1332 can act evenly and stably on the welding joint area between the second protrusion 323 and the tube body 311, making the load transfer more direct and reliable. This avoids uneven load transfer that could lead to local deformation of the arc plate body 321, thus ensuring the stability of the test results.

[0059] In other embodiments, the surface on which the first extrusion portion 1331 applies load to the arc plate body 321 is arranged along the circumference of the first protrusion 322, and the surface on which the second extrusion portion 1332 applies load to the arc plate body 321 is arranged along the circumference of the second protrusion 323.

[0060] Furthermore, such as Figure 7 As shown, the pipe unit 31 also includes a second guide hole 313, which penetrates the side wall of the pipe body 311 and is disposed opposite to the avoidance module 312.

[0061] The test state also includes: the drive unit 12 drives the extrusion module 133 to pass through the second guide hole 313 and the avoidance module 312 in sequence, applying a load to the arc plate body 321. The second guide hole 313 can provide pre-guidance and avoidance space for the extrusion module 133, so that the movement trajectory of the extrusion module 133 is limited before entering the avoidance module 312, avoiding the extrusion module 133 from deflecting, shaking or interfering with the inner wall of the tube body 311 during the process of passing through the tube body 311. Moreover, the guiding constraint formed by the second guide hole 313 and the avoidance module 312 can ensure that the extrusion module 133 always moves stably in the set direction, ensuring that the welding areas of the first extrusion part 1331, the second extrusion part 1332 and the first protrusion 322 and the second protrusion 323 are accurately aligned, the loading direction and the position of action are more stable and reliable, further reducing the test error caused by structural offset, and improving the stability and accuracy of the transmission shaft balance plate firmness test.

[0062] Furthermore, such as Figure 2 As shown, the positioning component 20 includes a positioning unit 21 and a guiding unit 23; the positioning unit 21 includes a positioning seat 211 and a clearance groove 213; the guiding unit 23 includes a guide seat 231 and a first guide hole 232; the clearance groove 213 is recessed on the surface of the positioning seat 211; the guide seat 231 is connected to the positioning seat 211; the first guide hole 232 penetrates the guide seat 231.

[0063] The test conditions also include: the outer wall of the tube 311 abuts against the positioning seat 211, at least part of the arc plate 321 is located within the clearance groove 213, and the extrusion module 133 applies a load to the arc plate 321 by sequentially passing through the first guide hole 232, the second guide hole 313, and the clearance module 312. When the positioning seat 211 abuts against the outer wall of the tube 311, it can achieve radial positioning of the tube 311, preventing the tube 311 from shaking or shifting under load. The clearance groove 213 is recessed on the surface of the positioning seat 211, which can provide a receiving space for the arc plate 321, avoiding structural interference between the positioning seat 211 and the arc plate 321, while not affecting the action path of the extrusion module 133 applying load to the arc plate 321.

[0064] Furthermore, such as Figure 5As shown, the positioning unit 21 also includes a positioning arc portion 212; the positioning seat 211 has a recessed surface to form the positioning arc portion 212.

[0065] The test conditions also include: the outer wall of the tube body 311 abutting against the positioning arc 212.

[0066] The shape of the positioning arc 212 can be adapted to the arc structure of the outer wall of the tube 311, so that the outer wall of the tube 311 and the positioning arc 212 can contact and abut against each other in the test state. Compared with planar positioning, the contact area between the positioning seat 211 and the tube 311 can be increased, further improving the stability and firmness of the positioning of the tube 311, and indirectly improving the accuracy of the test results.

[0067] Furthermore, such as Figure 2 As shown, the positioning component 20 also includes a limiting unit 22; the limiting unit 22 includes a hole limiting module 222, such as... Figure 6 As shown, the hole limiting module 222 includes a limiting shaft 2221 and a limiting plate 2222; the limiting plate 2222 is connected to one end of the limiting shaft 2221; there are multiple first guide holes 232; there are multiple second guide holes 313;

[0068] The test state also includes: the limiting shaft 2221 passes through a first guide hole 232 and a second guide hole 313 in sequence, the limiting plate 2222 abuts against the outer wall of the tube body 311, the extrusion module 133 passes through another first guide hole 232 and another second guide hole 313 in sequence, and the avoidance module 312 applies a load to the arc plate body 321; wherein, the limiting unit 22 and the extrusion module 133 are spaced apart.

[0069] The limiting unit 22, through the limiting shaft 2221, sequentially passes through the corresponding first guide hole 232 and second guide hole 313. In conjunction with the limiting plate 2222, it abuts against the outer wall of the tube body 311, thus providing axial limiting and radial locking of the tube body 311. Based on the positioning arc 212, this further restricts axial movement, radial displacement, and circumferential rotation of the tube body 311, significantly improving the positioning rigidity and stability of the tube body 311 under test conditions. Furthermore, the multiple first guide holes 232 and multiple second guide holes 313 allow the limiting shaft 2221 to pass through and the extrusion module 133 to pass through, respectively. These are independent and spaced apart, ensuring that the movement and action paths of the limiting unit 22 and the extrusion module 133 do not interfere with each other. This further ensures stable load transmission applied by the extrusion module 133 and improves the accuracy of the test results.

[0070] Furthermore, such as Figure 4As shown, in the test state: a < b; where a is the maximum distance between the limiting shaft 2221 and the wall of the first guide hole 232, and b is the maximum distance between the limiting shaft 2221 and the wall of the second guide hole 313. This distance difference provides a certain space for the rotation of the tube body 311 relative to the positioning component 20. When the tube body 311 rotates relative to the positioning component 20, the effect of the tube body 311 on the limiting shaft 2221 can be reduced, thereby avoiding excessive force on the limiting shaft 2221, which may cause bending or deformation and damage. This can protect the structural strength of the limiting module and improve its service life.

[0071] Furthermore, such as Figure 4 As shown, c > d; where c is the outer diameter of the limiting shaft 2221 within the area surrounded by the first guide hole 232 in the test state, and d is the outer diameter of the limiting shaft 2221 within the area surrounded by the second guide hole 313 in the test state.

[0072] The dimensional difference c > d can create a spacing difference a < b, thus preventing the limiting shaft 2221 from bending or deforming due to excessive force, which could lead to damage. This protects the structural strength of the limiting module and extends its service life. Furthermore, this method achieves a precise fit between the limiting shaft 2221 and the first guide hole 232, and a clearance fit with the second guide hole 313, without needing to reduce the diameter of the first guide hole 232. This increases the diameter of the segment of the limiting shaft 2221 corresponding to the first guide hole 232, improving the structural strength, bending resistance, and deformation resistance of the limiting shaft 2221, and ultimately enhancing the service life and reliability of the limiting unit 22.

[0073] Furthermore, such as Figure 7 and Figure 9 As shown, the avoidance module 312 includes a first side through hole 3122, a second side through hole 3123, and a central through hole 3121; the first side through hole 3122 and the second side through hole 3123 are distributed on opposite sides of the central through hole 3121;

[0074] The shape of the first extrusion part 1331 is adapted to the shape of the first side through hole 3122; the shape of the second extrusion part 1332 is adapted to the shape of the second side through hole 3123; the shape of the connecting part 1333 is adapted to the shape of the central through hole 3121;

[0075] The test state also includes: the drive unit 12 drives the extrusion module 133 to cause the first extrusion part 1331 to pass through the first side through hole 3122 to apply a load to the arc plate body 321, while the second extrusion part 1332 passes through the second side through hole 3123 to apply a load to the arc plate body 321. In the test state, the first extrusion part 1331 and the second extrusion part 1332 can synchronously pass through the corresponding first side through hole 3122 and second side through hole 3123 to apply a load to the arc plate body 321. At the same time, the first side through hole 3122 and the second side through hole 3123 can guide the movement of the first extrusion part 1331 and the second extrusion part 1332 to ensure that the load is applied synchronously and evenly to the corresponding area on the arc plate body 321. Furthermore, the central through hole 3121 is located between the first side through hole 3122 and the second side through hole 3123, so that the central through hole 3121 can accommodate the connecting part 1333. This can prevent the load generated by the connecting part 1333 abutting against the arc plate body 321 from causing the arc plate body 321 to deform and affect the test results.

[0076] In other embodiments, the extrusion assembly 10 includes a base unit 11 and an extrusion unit 13; the extrusion unit 13 includes a first force transmission rod 131 and a second force transmission rod 132; the drive unit 12 is connected to the base unit 11. One end of the second force transmission rod 132 is connected to the first force transmission rod 131, and the other end is connected to the extrusion module 133; the end of the first force transmission rod 131 away from the second force transmission rod 132 is connected to the drive unit 12.

[0077] In other embodiments, the limiting unit 22 includes a side limiting part 221; the side limiting part 221 is connected to the positioning seat 211. The test state also includes: one axial end of the tube 311 abutting against the side limiting part 221. Thus, during testing, the side limiting part 221 limits the axial movement of the tube 311, preventing axial displacement of the test assembly 30 under load and ensuring the stability of the test process.

[0078] Example 2:

[0079] This embodiment also proposes a driveshaft testing method, which can be applied to any of the driveshaft testing systems described in Embodiment 1, such as... Figure 11 As shown, the transmission shaft testing method includes steps S10, S20, S30, and S40; steps S10, S20, S30, and S40 are executed sequentially.

[0080] Step S10: The arc plate body 321 is welded and fixed to the tube body 311 via the first protrusion 322 and the second protrusion 323 to form the test assembly 30. The arc plate body 321 and the tube body 311 are welded together to form a test assembly 30 that is consistent with the actual drive shaft and balance plate assembly structure, thus restoring the real welding conditions and stress structure, providing a test basis for subsequent firmness tests, and ensuring that the test results have reference value.

[0081] Step S20: Position the test component 30 in the positioning component 20 until it reaches the positioning state. The positioning state includes the outer wall of the tube 311 abutting against the positioning component 20. This fixes the tube 311 in the test state, preventing displacement or shaking under force, ensuring the stability of the tube 311's position when the extrusion component 10 applies a load, and improving the reliability of the test results.

[0082] Step S30: The drive unit 12 drives the extrusion module 133 to pass through the avoidance module 312 and abut against the arc plate body 321. The avoidance module 312 provides a through channel for the extrusion module 133, avoiding interference from the tube body 311 structure with the extrusion module 133, and laying the loading foundation for accurate detection of the weld strength.

[0083] Step S40: The extrusion module 133 applies a gradually increasing load to the arc plate body 321 via the drive unit 12 until the arc plate body 321 detaches from the tube body 311, and the test data is recorded. The test data includes the critical load at which the arc plate body 321 detaches from the tube body 311, which accurately reflects the strength of the balance plate welding. This method of gradually increasing the load ensures a stable and accurate acquisition of the load at which the arc plate body 321 detaches from the tube body 311, guaranteeing the accuracy of the test data.

[0084] Furthermore, the extrusion assembly 10 includes a drive unit 12 and an extrusion module 133; the extrusion module 133 includes a first extrusion part 1331, a second extrusion part 1332, and a connecting part 1333; the first extrusion part 1331, the second extrusion part 1332, and the connecting part 1333 are respectively drivenly connected to the drive unit 12; the first extrusion part 1331 and the second extrusion part 1332 are distributed on opposite sides of the connecting part 1333.

[0085] The test component 30 includes a tube unit 31 and a sheet unit 32. The tube unit 31 includes a tube body 311 and an avoidance module 312. The avoidance module 312 penetrates the side wall of the tube body 311. The sheet unit 32 includes an arc sheet body 321, a first protrusion 322, and a second protrusion 323. The first protrusion 322 and the second protrusion 323 are respectively connected to the same side of the arc sheet body 321. The arc sheet body 321 is welded and fixed to the tube body 311 through the first protrusion 322 and the second protrusion 323. The projections of the first protrusion 322 and the second protrusion 323 along the radial direction of the tube body 311 are respectively located on opposite sides of the avoidance module 312.

[0086] In step S40:

[0087] The extrusion module 133 applies gradually increasing loads to the arc plate body 321. The first extrusion part 1331 and the second extrusion part 1332 apply gradually increasing loads to the arc plate body 321 respectively, and the connecting part 1333 is spaced apart from the arc plate body 321. In this way, only the weld-related area bears the test load, which can avoid the connecting part 1333 from contacting the arc plate body 321 and generating an extrusion effect. This completely avoids the main body of the arc plate body 321 from deforming due to force and absorbing the load due to the load applied by the extrusion assembly 10, and ensures that the load applied by the extrusion assembly 10 is transmitted without loss. This allows the finally recorded load data to accurately reflect the strength of the weld of the arc plate body 321 and improve the accuracy of the test results.

[0088] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A transmission shaft testing system, characterized in that, The drive shaft testing system includes: An extrusion assembly includes a drive unit and an extrusion module; the extrusion module includes a first extrusion section, a second extrusion section, and a connecting section; the first extrusion section, the second extrusion section, and the connecting section are respectively drivenly connected to the drive unit; the first extrusion section and the second extrusion section are distributed on opposite sides of the connecting section; The test assembly includes a tube unit and a sheet unit; the tube unit includes a tube body and an avoidance module; the avoidance module penetrates the side wall of the tube body; the sheet unit includes an arc sheet body, a first protrusion, and a second protrusion; the first protrusion and the second protrusion are respectively connected to the same side of the arc sheet body; the arc sheet body is welded and fixed to the tube body through the first protrusion and the second protrusion; the projections of the first protrusion and the second protrusion along the radial direction of the tube body are respectively located on opposite sides of the avoidance module; Positioning components; The test states of the drive shaft test system include: the outer wall of the tube abuts against the positioning component; the drive unit drives the extrusion module to pass through the avoidance module and apply a load to the arc plate body until the arc plate body detaches from the tube body; the first extrusion part is located on the side of the connecting part near the first protrusion; the second extrusion part is located on the side of the connecting part near the second protrusion; f1 > f, f2 > f; where f1 is the load applied by the first extrusion part to the arc plate body, f2 is the load applied by the second extrusion part to the arc plate body, and f is the load applied by the connecting part to the arc plate body. The avoidance module includes a first side through hole, a second side through hole, and a central through hole; the first side through hole and the second side through hole are distributed on opposite sides of the central through hole; The shape of the first extrusion part is adapted to the shape of the first side through hole; the shape of the second extrusion part is adapted to the shape of the second side through hole; the shape of the connecting part is adapted to the shape of the central through hole; The test state also includes: the driving unit drives the extrusion module to apply a load to the arc plate body by passing the first extrusion part through the first side through hole, while the second extrusion part applies a load to the arc plate body by passing through the second side through hole.

2. The transmission shaft testing system according to claim 1, characterized in that, The surface on which the first extrusion part applies load to the arc plate body is arranged along the circumference of the first protrusion.

3. The transmission shaft testing system according to claim 2, characterized in that, The surface on which the second extrusion part applies load to the arc plate is arranged along the circumference of the second protrusion.

4. The transmission shaft testing system according to claim 3, characterized in that, The pipe unit also includes a second guide hole, which penetrates the side wall of the pipe body and is disposed opposite to the avoidance module. The test state also includes: the driving unit drives the extrusion module to pass through the second guide hole and the avoidance module in sequence to apply a load to the arc plate body.

5. The transmission shaft testing system according to claim 4, characterized in that, The positioning component includes a positioning unit and a guiding unit; the positioning unit includes a positioning seat and a clearance groove; the guiding unit includes a guide seat and a first guide hole; the clearance groove is recessed on the surface of the positioning seat; the guide seat is connected to the positioning seat; the first guide hole penetrates the guide seat; The test state also includes: the outer wall of the tube abuts against the positioning seat, at least part of the arc plate is located in the clearance groove, and the extrusion module applies load to the arc plate by passing through the first guide hole, the second guide hole and the clearance module in sequence.

6. The transmission shaft testing system according to claim 5, characterized in that, The positioning unit further includes a positioning arc portion; the positioning seat has a recessed surface forming the positioning arc portion; The test state also includes: the outer wall of the tube abutting against the positioning arc.

7. The transmission shaft testing system according to claim 5, characterized in that, The positioning component further includes a limiting unit; the limiting unit includes a hole limiting module, the hole limiting module includes a limiting shaft and a limiting plate; the limiting plate is connected to one end of the limiting shaft; the number of the first guide holes is multiple; the number of the second guide holes is multiple; The test state also includes: the limiting shaft passing through one first guide hole and one second guide hole in sequence, the limiting plate abutting against the outer wall of the tube body, the extrusion module passing through another first guide hole and another second guide hole in sequence, and the avoidance module applying a load to the arc plate body; wherein, the limiting unit is spaced apart from the extrusion module.

8. The transmission shaft testing system according to claim 7, characterized in that, In the test state: a < b; where a is the maximum distance between the limiting shaft and the wall of the first guide hole, and b is the maximum distance between the limiting shaft and the wall of the second guide hole.

9. A transmission shaft testing system according to claim 8, characterized in that, c > d; where c is the outer diameter of the limiting shaft within the area surrounded by the first guide hole in the test state, and d is the outer diameter of the limiting shaft within the area surrounded by the second guide hole in the test state.

10. A method for testing a drive shaft, characterized in that, The drive shaft testing system described in any one of claims 1-9 is used; The drive shaft testing method includes: The arc plate is welded and fixed to the tube body through the first protrusion and the second protrusion to form a test assembly; The test component is positioned when the positioning component reaches the positioning state; wherein, the positioning state includes the outer wall of the tube abutting against the positioning component; The drive unit drives the extrusion module through the avoidance module to abut against the arc plate body; The driving unit causes the extrusion module to apply a gradually increasing load to the arc plate until the arc plate separates from the tube, and the test data is recorded.

11. A method for testing a transmission shaft according to claim 10, characterized in that, The process involves the driving unit causing the extrusion module to apply a gradually increasing load to the arc-shaped plate until it detaches from the tube body, and the test data is recorded. The extrusion module applies a gradually increasing load to the arc plate body. The first extrusion part and the second extrusion part apply gradually increasing loads to the arc plate body respectively, and the connecting part is spaced apart from the arc plate body.

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