Load simulation test bench for EPS steering controller

Abstract

This application specifically relates to a load simulation test bench for an EPS steering controller. A first clamping assembly and a second clamping assembly are arranged opposite each other on the top of the test bench. At least one of the first and second clamping assemblies is equipped with a correction mechanism. Multiple correction components of the correction mechanism are spaced apart around the central axis of a rotation shaft. A fixing plate of the correction component is connected to the second clamping assembly. A clamping plate and a fixing plate are correspondingly arranged, radially along the rotation shaft, with the clamping plate positioned inside the fixing plate. One end of a telescopic rod is connected to the fixing plate, and the other end is connected to the clamping plate. A sliding plate is slidably connected to the end of the clamping plate radially along the rotation shaft. A guide plate is connected to the end of the sliding plate facing away from the clamping plate, and the guide plate is inclined relative to the central axis of the rotation shaft. This application can achieve correction of the axial position of the rotation shaft, avoiding the technical problem of test errors in the EPS steering controller caused by the offset of the clamping position of the rotation shaft.

Description

Technical Field

[0001] This application belongs to the field of automotive parts auxiliary tooling technology, specifically relating to a load simulation test bench for an EPS steering controller. Background Technology

[0002] The main function of the EPS steering controller is to connect the various components within the steering system, enabling it to smoothly complete operations that change or maintain the direction of the vehicle's movement, whether driving or reversing.

[0003] Before the steering controller is taken off the production line, the load of the EPS steering controller needs to be simulated using a test bench to determine whether there are any abnormalities in the corresponding steering controller.

[0004] In the process of developing this application, the applicant discovered at least the following shortcomings in the relevant technology: In related technologies, when the rotating shaft of the EPS steering controller is clamped on a test bench, there is a situation where the rotating shaft deviates from the design axis, which leads to distortion of the rotational resistance test data and is not conducive to the abnormal judgment of the steering controller. Summary of the Invention

[0005] Based on the above-mentioned technical problems, this application provides a load simulation test bench for EPS steering controller, which aims to at least improve the situation where the rotation axis of the steering controller deviates from the design axis to avoid distortion of rotational resistance test data and the technical problem of abnormal judgment of steering controller.

[0006] This application is achieved through the following technical solution: A load simulation test bench for an EPS steering controller is provided for applying a load to the rotating shaft of the EPS steering controller. The test bench includes: a test bench; a first clamping assembly and a second clamping assembly, arranged opposite each other on the top of the test bench, one end of the rotating shaft rotatably passing through the first clamping assembly, and the other end of the rotating shaft rotatably passing through the second clamping assembly; and a correction mechanism, wherein at least one of the first clamping assembly and the second clamping assembly is equipped with the correction mechanism, and the correction mechanism includes a plurality of correction components, the plurality of correction components revolving around the center of the rotating shaft. The correction assembly, with axial spacing, includes: a fixed plate connected to the second clamping assembly; a clamping plate corresponding to the fixed plate, wherein the clamping plate and the corresponding fixed plate are arranged radially along the rotation axis, and the clamping plate is disposed inside the fixed plate; a telescopic rod that extends and retracts radially along the rotation axis, one end of the telescopic rod being connected to the fixed plate and the other end being connected to the clamping plate; a sliding plate that slides radially along the rotation axis to the end of the clamping plate; and a guide plate connected to the end of the sliding plate facing away from the clamping plate, wherein the guide plate is inclined to the central axis of the rotation axis.

[0007] In some implementations, the telescopic rod has a built-in first spring.

[0008] In some embodiments, the correction component further includes a limiting block connected to the end of the clamping plate and located radially outside the slide plate along the axis of rotation to limit the sliding position of the slide plate.

[0009] In some embodiments, the correction assembly further includes a guide block connected to the outside of the slider, and at least a portion of the limiting block is slidably disposed in the guide block.

[0010] In some implementations, a second spring is provided between the limiting block and the guide block.

[0011] In some embodiments, the end of the slide away from the clamping plate is provided with a first inclined surface, the first inclined surface being inclined to the axial direction of the rotation axis, one side of the first inclined surface being connected to the inner wall of the slide, and the other side of the first inclined surface being connected to the guide plate.

[0012] In some embodiments, the corrective component further includes a magnetic slider that slides through the slide plate.

[0013] In some embodiments, the slide plate has a through receiving groove, at least one side wall of the receiving groove is provided with a second guide groove, the slider is adapted to pass through the receiving groove, a guide protrusion is provided on one side of the slider in the width direction, the guide protrusion reciprocates in the second guide groove, and a third spring is provided between the guide protrusion and both sides of the second guide groove.

[0014] In some embodiments, the correction assembly further includes: a position sensor connected to the clamping block for confirming the position of the slider within the slide plate; and / or: a display layer coated on the outer surface of the slider.

[0015] In some embodiments, the inner side of the clamping plate is connected to a roller, the central axis of the roller is parallel to the central axis of the rotation axis, and the end of the roller facing the slide plate and the inner wall of the slide plate are connected by a second inclined surface.

[0016] Before the rotating shaft of the EPS steering controller is assembled onto the decorative frame, the guide plates of the multiple correction components of this application form a frustoconical assembly channel coaxial with the first and second through holes. The maximum diameter of this assembly channel is greater than the outer diameter of the rotating shaft, and the minimum diameter of the assembly channel is less than the outer diameter of the rotating shaft. When the rotating shaft of the EPS steering controller is assembled onto the decorative frame, one end of the rotating shaft first contacts the guide plates of the multiple clamping components. Since the guide plates are inclined relative to the central axis of the rotating shaft, the multiple guide plates expand radially outward along the rotating shaft as the rotating shaft continues to advance. Because the guide plates are connected to the sliding plate, the guide plates are pushed by the rotating shaft simultaneously... The corresponding sliding plate slides at the end of the clamping block, causing multiple sliding plates to expand outward until they are flush with the inner side of the clamping plate. One end of the rotating shaft continuously pushes the guide plate to the sliding plate, and through the sliding plate, the corresponding clamping block expands outward synchronously until the rotating shaft is completely embedded in the inner wall of the multiple clamping blocks. Thus, the rotating shaft is wrapped by the clamping blocks and the sliding plate, and the clamping blocks and the sliding plate are in contact with the outer wall of the rotating shaft. When the rotating shaft is inserted into the first clamping component and / or the second clamping component, the support of the rotating shaft by the multiple clamping blocks is used to correct the axial position of the rotating shaft, avoiding the technical problem of test error of the EPS steering controller caused by the offset of the clamping position of the rotating shaft. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the load simulation test bench for an EPS steering controller according to one or more embodiments of this application is shown. Figure 2 It shows Figure 1 A structural diagram showing the removal of the EPS steering controller and correction mechanism; Figure 3 It shows Figure 2 Another perspective structural diagram; Figure 4 A schematic diagram of the alignment mechanism and the rotating shaft assembly is shown. Figure 5 A schematic diagram of the correction mechanism is shown; Figure 6 It shows Figure 5 A schematic diagram of the corrective components in the diagram; Figure 7 An assembly diagram of the guide block and the limiting block is shown; Figure 8 An assembly diagram of the skateboard and guide plate is shown; Figure 9 It shows Figure 8 Another structural diagram from a different perspective; Figure 10 An assembly diagram of the skateboard and slider is shown; Figure 11 It shows Figure 6 Another structural diagram from a different perspective; Explanation of reference numerals in the attached figures: 10. Test bench; 100. Test bench; 200, First clamping assembly; 210, First support; 220, First through hole; 230, First bearing; 300. Second clamping assembly; 310. Second support; 311. First base; 312. Second base; 313. Locking screw; 320. Second through hole; 330. Second bearing; 400. Correction mechanism; 410. Correction assembly; 411. Fixing plate; 412. Clamping plate; 4121. Web plate; 4122. Wing plate; 4123. Roller; 4124. Second inclined plane; 413. Telescopic rod; 414. Slide plate; 4141. First inclined plane; 4142. Receiving groove; 4143. Second guide groove; 415. Guide plate; 416. Limiting block; 417. Guide block; 4171. First guide groove; 4172. Second spring; 419. Slider; 4191. Guide protrusion; 4192. Third spring; 4193. Display layer; 4110. Position sensor; 500. Drive assembly; 510. Motor mount; 520. Drive motor; 530. Drive wheel; 540. Third support; 550. Drive shaft; 560. Drive wheel; 570. Drive belt; 20. EPS steering controller; 20a. Rotary shaft. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Figure 1 A schematic diagram of the load simulation test bench 10 for the EPS steering controller 20 in one or more embodiments of this application is shown. (In conjunction with...) Figure 1The test bench 10 provided in this application is mainly used to apply a load to the rotating shaft 20a of the EPS steering controller 20. The test bench 10 includes a test table 100, a first clamping assembly 200 and a second clamping assembly 300. The first clamping assembly 200 and the second clamping assembly 300 are arranged opposite to each other on the top of the test table 100. One end of the rotating shaft 20a is rotatably inserted through the first clamping assembly 200, and the other end of the rotating shaft 20a is rotatably inserted through the second clamping assembly 300. The second clamping assembly 300 and the second clamping assembly 300 ensure that the axis of the rotating shaft 20a is in a predetermined direction. By controlling the rotation of the rotating shaft 20a relative to the second clamping assembly 300 and the second clamping assembly 300, a load can be applied to the rotating shaft 20a to simulate the load condition of the EPS steering controller 20.

[0021] Figure 2 It shows Figure 1 A structural diagram excluding the EPS steering controller and correction mechanism, combined with... Figure 2 In some embodiments, the first clamping assembly 200 includes a first support 210, which is fixedly connected to the top surface of the test bench 100. The first support 210 is provided with a first through hole 220 through which the rotating shaft 20a moves. A first bearing 230 is provided in the first through hole 220 to ensure that the rotating shaft 20a rotates smoothly in the first through hole 220.

[0022] Combination Figure 2 In some embodiments, the second clamping assembly 300 includes a second support 310, which is fixedly connected to the top surface of the test bench 100. The second support 310 is provided with a second through hole 320 through which the rotating shaft 20a moves. A second bearing 330 is provided in the second through hole 320 to ensure that the rotating shaft 20a rotates smoothly in the second through hole 320.

[0023] In some embodiments, one of the first support 210 of the first clamping assembly 200 and the second support 310 of the second clamping assembly 300 is a split structure to facilitate adjustment of the position of the axis of the corresponding through hole, thereby adjusting the axial position of the rotating shaft 20a during testing. Figure 2 For example, the second support 310 of the second clamping assembly 300 includes a first base 311 and a second base 312. The first base 311 is disposed above the second base 312. The opposite sides of the first base 311 and the second base 312 enclose the aforementioned second through hole 320. One side of the bottom surface of the first base 311 is rotatably connected to the second base 312. The other side of the bottom surface of the first base 311 can be locked to the second base 312 by a locking screw 313. By controlling the locking stroke of the locking screw 313, the position of the axis of the second through hole 320 can be adjusted, thereby adjusting the axial position of the rotating shaft 20a during testing.

[0024] Combination Figure 1 as well as Figure 2 In some embodiments, the test bench 10 further includes a drive assembly 500 connected to the test bench 100 to increase the power supply for rotating the rotary shaft 20a. Figure 3 It shows Figure 2 Another perspective structural diagram, combined with Figure 3 Specifically, the drive assembly 500 includes a motor base 510, a drive motor 520, a drive wheel 530, a third support 540, a drive shaft 550, a drive wheel 560, and a drive belt 570. The motor base 510 is connected inside the test bench 100. The drive motor 520 is mounted on the motor base 510. The drive wheel 530 is connected to the output shaft of the drive motor 520. The third support 540 is connected to the top surface of the test bench 100. The drive shaft 550 is rotatably connected to the third support 540. The drive wheel 560 is sleeved on the drive shaft 550. The drive wheel 560 and the drive wheel 530 are connected by the drive belt 570. The drive shaft 550 can be connected to one end of the rotating shaft 20a via a coupling. When the drive motor 520 is started, it drives the drive shaft 550 to rotate via the drive wheel 530, the drive belt 570, and the drive wheel 560, which in turn drives the rotating shaft 20a to rotate synchronously via the coupling. Specifically, the third support 540 is located on the side of the first support 210 away from the second support 310. That is, the third support 540, the first support 210, and the second support 310 are arranged alternately in the horizontal direction. The third support 540 and the first support 210 can be integrated together. A bearing is provided on the part of the third support 540 that supports the drive shaft 550 to ensure that the drive shaft 550 can rotate smoothly. In use, the drive assembly 500 drives the rotating shaft 20a to rotate at different speeds to test the rotational obstruction of the rotating shaft 20a.

[0025] In actual implementation, during the assembly of the rotating shaft 20a to the first clamping assembly and the second clamping assembly, assembly errors may cause the rotating shaft 20a to deviate from the design axis, which in turn leads to distortion of the rotational resistance test data and is not conducive to the abnormal judgment of the steering controller.

[0026] Combination Figure 1 To address the aforementioned issues, the test bench 10 provided in this application further includes a correction mechanism 400. At least one of the first clamping assembly 200 and the second clamping assembly 300 is equipped with the correction mechanism 400. The correction mechanism 400 ensures that the axis of the rotating shaft 20a is in a predetermined position during installation and testing, thereby ensuring the accuracy of the rotational resistance test data and facilitating the judgment of abnormalities in the steering controller.

[0027] Figure 4A schematic diagram of the alignment mechanism and the rotating shaft assembly is shown. Figure 5 A schematic diagram of the corrective mechanism is shown, combined with Figure 4 as well as Figure 5 The correction mechanism 400 includes a plurality of correction components 410, which are spaced apart around the central axis of the rotation axis 20a. Figure 6 It shows Figure 5 A schematic diagram of the corrective components in the diagram, combined with Figure 6 The correction assembly 410 includes a fixed plate 411, a clamping plate 412, a telescopic rod 413, a sliding plate 414, and a guide plate 415. The fixed plate 411 is connected to the second clamping assembly 300. The clamping plate 412 and the fixed plate 411 are correspondingly arranged. The clamping plate 412 and the corresponding fixed plate 411 are arranged radially along the rotation axis 20a. The clamping plate 412 is located inside the fixed plate 411. The telescopic rod 413 extends and retracts radially along the rotation axis 20a. One end of the telescopic rod 413 is connected to the fixed plate 411, and the other end of the telescopic rod 413 is connected to the clamping plate 412. The sliding plate 414 is slidably connected to the end of the clamping plate 412 radially along the rotation axis 20a. The guide plate 415 is connected to the end of the sliding plate 414 facing away from the clamping plate 412. The guide plate 415 is inclined to the central axis of the rotation axis 20a.

[0028] Before the rotating shaft 20a of the EPS steering controller 20 is assembled onto the decorative frame, the guide plates 415 of the multiple straightening components 410 form a frustoconical assembly channel coaxial with the first through hole 220 and the second through hole 320. The maximum diameter of this assembly channel is greater than the outer diameter of the rotating shaft 20a, and the minimum diameter of the assembly channel is less than the outer diameter of the rotating shaft 20a. When the rotating shaft 20a of the EPS steering controller 20 is assembled onto the decorative frame, one end of the rotating shaft 20a first contacts the guide plates 415 of the multiple clamping components. Since the guide plates 415 are inclined to the central axis of the rotating shaft 20a, the multiple guide plates 415 expand radially outward along the rotating shaft 20a as the rotating shaft 20a continues to advance. Since the guide plates 415 are connected to the sliding plate 414, the guide plates 415 are pushed by the rotating shaft 20a simultaneously... The corresponding sliding plate 414 slides at the end of the clamping block, that is, multiple sliding plates 414 expand outward until the sliding plate 414 is flush with the inner side of the clamping plate 412. One end of the rotating shaft 20a continuously pushes the guide plate 415 to the sliding plate 414, and through the sliding plate 414 drives the corresponding clamping block to expand outward synchronously until the rotating shaft 20a is completely embedded in the inner wall of multiple clamping blocks, so that the rotating shaft 20a is wrapped by the clamping block and the sliding plate 414, and the clamping block and the sliding plate 414 are in contact with the outer wall of the rotating shaft 20a. When the rotating shaft 20a is inserted into the first clamping component 200 or / and the second clamping component 300, the support of multiple clamping blocks on the rotating shaft 20a is used to correct the axial position of the rotating shaft 20a, avoiding the technical problem of test error of EPS steering controller 20 caused by the clamping position deviation of the rotating shaft 20a.

[0029] In some embodiments, the corrective mechanism 400 is connected to the first clamping component 200, that is, the first clamping component 200 is equipped with the corrective mechanism 400, while the second clamping component 300 is not equipped with the corrective mechanism 400, and the corrective mechanism 400 is connected to the side of the first clamping component 200 facing the second clamping component 300. In other embodiments, the second clamping component 300 may be equipped with the corrective mechanism 400, while the first clamping component 200 may not be equipped with the corrective mechanism 400. In this case, the corrective mechanism 400 is connected to the side of the second clamping component 300 facing away from the second clamping component 300; or, both the first clamping component 200 and the second clamping component 300 may be equipped with the corrective mechanism 400. In this case, one corrective mechanism 400 is connected to the side of the first clamping component 200 facing the second clamping component 300, and the other corrective mechanism 400 is connected to the side of the second clamping component 300 facing away from the second clamping component 300. The first clamping assembly 200 is now configured with a correction mechanism 400, and the specific details of the correction mechanism 400 are further described in conjunction with the accompanying drawings.

[0030] Combination Figures 4-6In some embodiments, the fixing plate 411 of the correction component 410 is connected to the side of the first support 210 facing the second support 310. The fixing plate 411 is arc-shaped and can be connected to the first support 210 by integral molding or screw connection. This application does not limit this.

[0031] In some embodiments, the telescopic rod 413 includes two relatively telescopic rods, one rod being connected to the inner side of the fixing plate 411 and the other rod being connected to the outer side of the clamping plate 412, and the two rods being able to extend and retract relative to each other. When the clamping plate 412 moves outward, the two rods extend and retract synchronously, so that the clamping plate 412 can only reciprocate radially along the rotation axis 20a.

[0032] In some embodiments, the telescopic rod 413 has a built-in first spring (not shown), that is, a first spring is provided between the two rods. In the initial state before the rotating shaft 20a is assembled, the first spring is in a state of natural deformation, and the telescopic rod 413 is at its longest length. During the assembly of the rotating shaft 20a, the continuous pushing of the rotating shaft 20a drives multiple clamping plates 412 to move outward synchronously. The first spring is compressed and deformed, and the first spring also applies a force to the second rod 4132, so that the clamping rod is always in contact with the circumferential surface of the rotating shaft 20a to ensure the axial position of the rotating shaft 20a.

[0033] In conjunction with 6, in some embodiments, the clamping plate 412 includes a web plate 4121 and a wing plate 4122. The web plate 4121 is arc-shaped and adapted to the outer diameter of the rotating shaft 20a to be assembled, so as to ensure that the web plate 4121 can contact and fit with the circumferential surface of the rotating shaft 20a. The second rod 4132 of the telescopic rod 413 is connected to the web plate 4121. Two wing plates 4122 are provided, and the two wing plates 4122 are arranged opposite to each other on both sides of the web plate 4121 to improve the strength of the clamping plate 412 itself.

[0034] Combination Figure 4 as well as Figure 5 In some embodiments, the correction assembly 410 further includes a limiting block 416, which is connected to the end of the clamping plate 412 and located radially along the rotation axis 20a outside the slide plate 414 to limit the sliding position of the slide plate 414. During the outward expansion of the slide plate 414, when the slide plate 414 moves to the inside of the limiting block 416, the limiting block 416 and the slide plate 414 are fixed together due to the restriction of the limiting block 416, thereby causing the slide plate 414 to move outward together with the clamping block.

[0035] Combination Figures 4-6In some embodiments, the correction component 410 further includes a guide block 417 connected to the outside of the slider 419, and at least a portion of the limiting block 416 is slidably disposed in the guide block 417. This arrangement allows the limiting block 416 to slide within a limiting sleeve as the slider 419 expands outward, ensuring the direction of movement of the slider 419.

[0036] Figure 7 An assembly diagram of the guide block and the limit block is shown, combined with... Figure 7 In specific implementation, the slider 419 is arc-shaped and matches the outer diameter of the rotating shaft 20a to be assembled, so as to ensure that the slider 419 can contact and fit with the circumferential surface of the rotating shaft 20a. The guide block 417 can be integrally formed and connected to the outer side of the slider 419. The guide block 417 is provided with a first guide groove 4171 with an outer opening. The limiting block 416 can be integrally formed and connected to the end of the web plate 4121 and is inserted into the first guide groove 4171 of the guide block 417.

[0037] Combination Figure 7 In some embodiments, a second spring 4172 is provided between the limiting block 416 and the guide block 417. In the initial state before the rotating shaft 20a is assembled, the second spring 4172 is in a state of natural deformation, and the distance between the limiting block 416 and the guide block 417 is at its maximum. During the assembly of the rotating shaft 20a, the continuous pushing of the rotating shaft 20a drives multiple slide plates 414 to move outward step by step. The second spring 4172 is compressed and deformed, and the second spring 4172 also applies a force to the slide plate 414, so that the slide plate 414 is always in contact with the circumferential surface of the rotating shaft 20a, thereby ensuring the axial position of the rotating shaft 20a. Exemplarily, a first guide groove 4171 is provided on the outer side of the guide block 417, at least a portion of the limiting block 416 is adapted to slide within the first guide groove 4171, and the second spring 4172 is disposed between the limiting block 416 and the bottom of the first guide groove 4171.

[0038] It should be noted that during the load simulation of the steering controller, if the clamping position of at least one of the first clamping component 200 and the second clamping component 300 shifts, causing the rotation of the rotating shaft 20a to be off-center, the rotating shaft 20a will not be visible under the clamping of the first clamping component 200 and the second clamping component 300. In this case, by wrapping the clamping block and the sliding plate 414 that clamp the rotating shaft 20a, it can be clearly determined whether there is a problem of misalignment of the clamping of the rotating shaft 20a. That is, when there is a misalignment of the axis of the rotating shaft 20a, the fit between the clamping block and the sliding plate 414 and the outer wall of the rotating shaft 20a will be uneven. This will cause the clamping block and the sliding plate 414, which should be tightly fitted to the outer wall of the rotating shaft 20a, to become a state of fit with gaps. At this time, the operator can intuitively judge the clamping deviation and adjust the clamping direction and force of the first clamping component 200 and / or the second clamping component 300 in time, thereby ensuring the accuracy and repeatability of the test data.

[0039] Figure 8 An assembly diagram of the skateboard and guide plate is shown. (Combined) Figure 8 In some embodiments, a first inclined surface 4141 is provided at the end of the slide plate 414 away from the clamping plate 412. The first inclined surface 4141 is inclined to the axial direction of the rotation shaft 20a. One side of the first inclined surface 4141 is connected to the inner wall of the slide plate 414, and the other side of the first inclined surface 4141 is connected to the guide plate 415. That is, the guide plate 415 and the inner wall of the slide plate 414 are transitioned through the first inclined surface 4141, so that the rotation shaft 20a can smoothly enter the multiple slide plates 414 through the multiple guide plates 415. In specific implementation, two guide plates 415 are provided at the end of each slide plate 414 facing away from the clamping block. The two guide plates 415 can be integrally formed with the slide plate 414. In addition, the included angle between the guide plate 415 and the central axis of the slider 419 can be 30°-60°, and the inclination angle of the first inclined surface 4141 can be consistent with the inclination angle of the guide plate 415, so that the rotation shaft 20a can be smoothly introduced from the multiple guide plates 415 into the multiple slide plates 414. Of course, in other embodiments, each skateboard 414 may also be configured with only one guide plate 415 or more guide plates 415, and this application does not limit this.

[0040] In the above implementation method, although the axial position of the rotating shaft 20a can be detected, there is a lack of intuitive detection means. The staff cannot quickly identify the axial deviation of the rotating shaft 20a. Based on this technical problem, the applicant further improved the correction component 410 so that the staff can quickly identify the axial deviation of the rotating shaft 20a.

[0041] Figure 9 It shows Figure 8 Another structural diagram from a different perspective, combined with Figure 8 as well as Figure 9 In some embodiments, the correction component 410 further includes a magnetic slider 419 that slides through the slide plate 414 and can be attracted by the rotating shaft 20a. When the axis of the rotating shaft 20a is not offset, the outer walls of the slider 419 and the slide plate 414 are flush. When the axis of the rotating shaft 20a is misaligned, a misaligned gap appears between the rotating shaft 20a and the slide plate 414, and the slider 419 slides within the slide plate 414 under the attraction of the rotating shaft 20a. When the rotating shaft 20a is misaligned, the slider 419 is pulled by the magnetic force to shift towards the gap side and embeds itself into the slide plate 414, thus creating a step difference between the outer walls of the slider 419 and the slide plate 414. The operator can confirm the misalignment of the axis of the rotating shaft 20a through this step difference, which allows the operator to quickly and intuitively identify the misalignment of the axis of the rotating shaft 20a, making it highly practical.

[0042] Figure 10 An assembly diagram of the skateboard and slider is shown, combined with... Figure 10 In specific implementation, the slide plate 414 has a through receiving groove 4142. At least one side wall of the receiving groove 4142 is provided with a second guide groove 4143. The slider 419 is adapted to pass through the receiving groove 4142. A guide protrusion 4191 is provided on one side of the slider 419 in the width direction. The guide protrusion 4191 reciprocates within the second guide groove 4143. A third spring 4192 is provided between both sides of the guide protrusion 4191 and the second guide groove 4143. The reciprocating movement of the guide protrusion 4191 within the second guide groove 4143 restricts the movement position of the slider 419 within the receiving groove 4142, preventing the slider 419 from being attracted and detached from the slide plate 414 by the rotating shaft 20a. The third spring 4192 is provided (the function of the third spring 4192). For example, the two side walls of the receiving groove 4142 are provided with second guide grooves 4143, and correspondingly, two guide protrusions 4191 are also provided, which reciprocate within the corresponding second guide grooves 4143. Of course, in other configurations, the second guide groove 4143 may only be provided on one side of the receiving groove 4142, and this application does not limit this.

[0043] Combination Figure 10 In some embodiments, the outer surface of the slider 419 is coated with a display layer 4193. This display layer 4193 is a different color from the outer wall of the clamping block, allowing operators to more intuitively determine the position of the slider 419 relative to the clamping block. Furthermore, the slider 419 may be provided with scale markings, which indicate a reference system formed with the inner wall of the receiving groove 4142. Operators can read the offset value visually, thereby accurately adjusting its clamping amount in real time.

[0044] Combination Figure 4 as well as Figure 5 In some embodiments, the correction assembly 410 further includes a position sensor 4110 connected to the clamping plate 412. The position sensor 4110 is used to confirm the position of the slider 419 within the slide plate 414. When the position sensor 4110 confirms that the slider 419 is not within a set range, it can control an alarm connected to the position sensor to sound an alarm, alerting the operator to the axial misalignment of the rotating shaft 20a. This method is more intelligent and can be used in conjunction with the aforementioned slider 419 having a display layer 4193 and scale markings. For example, the position sensor 4110 is located at the end of the web 4121 of the clamping plate 412 facing the slide plate 414 to detect the relative position of the slider 419 within the slide plate 414 in real time, thereby determining whether there is axial misalignment of the rotating shaft 20a. The position sensor 4110 can be a visual intelligent sensor, such as a high-definition intelligent camera with communication function, to capture the relative position information of the slider 419 on the skateboard 414 in real time and send the captured position information to a remote terminal. The remote terminal then confirms whether the position of the slider 419 in the skateboard 414 is within the set range by comparison.

[0045] It should be noted that the display layer 4193 of the position sensor 4110 and the slider 419 can be set simultaneously, or only one of them can be set. This application does not impose any restrictions on this.

[0046] Figure 11 It shows Figure 6 Another structural diagram from a different perspective, combined with Figure 11 In some embodiments, rollers 4123 are rotatably connected to the inner side of the clamping plate 412. The central axis of the rollers 4123 is parallel to the central axis of the rotating shaft 20a. The end of the rollers 4123 facing the slide plate 414 and the inner wall of the slide plate 414 are connected by a second inclined surface 4124. After the rotating shaft 20a pushes open the multiple clamping blocks, they simultaneously enter the space between the rollers 4123 through the second inclined surface 4124. When the rotating shaft 20a is driven to rotate, it rotates on the rollers 4123 inside the clamping blocks, simultaneously driving the rollers 4123 to roll and rotate synchronously relative to the clamping blocks. This results in a pure rolling contact without slippage between the rotating shaft 20a and the rollers 4123, greatly reducing the frictional heat and surface wear of the clamping blocks and improving their service life. For example, each clamping block is configured with a roller 4123, and the inner wall of the clamping block is provided with a mounting groove. The roller 4123 rotates in the mounting groove in a matching manner, and a portion of the roller 4123 protrudes from the opening side of the mounting groove so as to roll in contact with the circumferential surface of the rotating shaft 20a.

[0047] In summary, this application, through the setting of the correction mechanism 400, can complete the correction of the center position of the rotating shaft 20a of the EPS steering controller 20, and can also monitor the center position of the rotating shaft 20a online, avoiding the test error problem caused by the axis deviation of the EPS steering controller 20 when rotating due to the clamping position deviation, and improving the accuracy of the evaluation of the EPS steering controller 20.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the second and second features, or contact between the second and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the second feature being directly above or diagonally above the second feature, or simply indicates that the second feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature includes the second feature being directly below or diagonally below the second feature, or simply indicates that the second feature is at a lower horizontal level than the second feature.

[0049] 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", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0050] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] Furthermore, the use of terms such as "second" or "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "second" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations 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 load simulation test bench of an EPS steering controller for applying a load to a rotation axis of the EPS steering controller, characterized in that, The test bench includes: Test bench; A first clamping assembly and a second clamping assembly are arranged opposite to each other on the top of the test bench. One end of the rotating shaft is rotatably inserted through the first clamping assembly, and the other end of the rotating shaft is rotatably inserted through the second clamping assembly. A corrective mechanism is provided, wherein at least one of the first clamping assembly and the second clamping assembly is equipped with the corrective mechanism, the corrective mechanism comprising a plurality of corrective components, the plurality of corrective components being spaced apart about the central axis of the rotation axis, the corrective components comprising: A fixing plate is connected to the second clamping assembly; A clamping plate is provided correspondingly to the fixing plate. The clamping plate and the corresponding fixing plate are arranged radially along the rotation axis, and the clamping plate is located inside the fixing plate. A telescopic rod extends and retracts radially along the rotation axis, with one end of the telescopic rod connected to the fixed plate and the other end connected to the clamping plate; The sliding plate is radially connected to the end of the clamping plate along the axis of rotation; A guide plate is connected to the end of the slide plate facing away from the clamping plate, and the guide plate is inclined to the central axis of the rotation shaft.

2. The load simulation test bench for EPS steering controller according to claim 1, wherein, The telescopic rod has a built-in first spring.

3. The load simulation test bench for an EPS steering controller according to claim 1, characterized in that, The corrective component also includes: A limiting block is connected to the end of the clamping plate and is located radially along the rotation axis on the outside of the slide plate to limit the sliding position of the slide plate.

4. The load simulation test bench for an EPS steering controller according to claim 3, characterized in that, The correction assembly further includes a guide block connected to the outside of the slider, and at least a portion of the limiting block is slidably disposed in the guide block.

5. The load simulation test bench for an EPS steering controller according to claim 3, characterized in that, A second spring is provided between the limiting block and the guide block.

6. The load simulation test bench for an EPS steering controller according to claim 1, characterized in that, The end of the slide away from the clamping plate is provided with a first inclined surface, which is inclined to the axial direction of the rotation axis. One side of the first inclined surface is connected to the inner wall of the slide, and the other side of the first inclined surface is connected to the guide plate.

7. A load simulation test bench for an EPS steering controller according to any one of claims 1-6, characterized in that, The correction component also includes a magnetic slider that slides through the slide plate.

8. The load simulation test bench for an EPS steering controller according to claim 7, characterized in that, The slide plate has a through receiving groove, and at least one side wall of the receiving groove is provided with a second guide groove. The slider is adapted to pass through the receiving groove. A guide protrusion is provided on one side of the slider in the width direction. The guide protrusion moves back and forth in the second guide groove. A third spring is provided between the guide protrusion and both sides of the second guide groove.

9. The load simulation test bench for an EPS steering controller according to claim 7, characterized in that, The corrective component also includes: A position sensor, connected to the clamping block, is used to confirm the position of the slider within the slide plate; or / and; The outer surface of the slider is coated with a display layer.

10. A load simulation test bench for an EPS steering controller according to any one of claims 1-6, characterized in that, The inner side of the clamping plate is connected to a roller, the central axis of the roller is parallel to the central axis of the rotating shaft, and the end of the roller facing the slide plate and the inner wall of the slide plate are connected by a second inclined surface.

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