A side step endurance test device

Abstract

The utility model discloses a kind of side pedal endurance test devices, the test device includes support frame, swing arm, sole profiling and drive assembly, swing arm includes first connecting part, second connecting part and third connecting part, first connecting part, second connecting part and third connecting part are spaced apart along the length direction of swing arm, second connecting part is rotatably connected on support frame;Sole profiling is rotatably connected on first connecting part, sole profiling can be with preset pressure acting on side pedal;The driving end of drive assembly is connected with third connecting part, to drive first connecting part swing around second connecting part along the direction of approaching or away from side pedal. The test device provided in the application can avoid interference with the chassis, wheel brow and the like of the vehicle, thereby improving the authenticity and reliability of the test.

Description

Technical Field

[0001] This application relates to the field of testing equipment, and more particularly to a side pedal durability testing device. Background Technology

[0002] In the global automotive market, with the continuous upgrading of demand for vehicle versatility, the market share of sport utility vehicles (SUVs) and minivans (MPVs) continues to rise. These vehicles generally have a higher overall height, increasing the vertical drop between the passenger compartment floor and the ground by 35%-60% compared to traditional sedans. To effectively improve the convenience of getting in and out of the vehicle, an increasing number of these models are equipped with side steps.

[0003] As an important auxiliary component of a vehicle, the durability of the side steps directly affects the safety and service life of the vehicle. Therefore, it is crucial to conduct durability testing on the side steps during the vehicle production and R&D process.

[0004] Currently, existing side tread plate durability testing devices are bulky due to the inclusion of multiple large components and their redundant overall structure. In vehicle testing scenarios, they are difficult to adapt to the compact space, and their installation is prone to interference with vehicle chassis longitudinal beams, wheel arches, etc., which not only affects the normal conduct of the test but may also damage related vehicle components, compromising the authenticity of the test and making it impossible to reliably assess the durability performance of the side tread plate. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the prior art, this utility model provides a side pedal durability testing device that can avoid interference with the vehicle chassis, wheel arches, etc., thereby improving the authenticity and reliability of the test.

[0006] To solve the above-mentioned technical problems, this utility model provides a side tread durability testing device, comprising:

[0007] Support frame;

[0008] A swing arm, the swing arm including a first connecting part, a second connecting part and a third connecting part, the first connecting part, the second connecting part and the third connecting part being spaced apart along the length direction of the swing arm, and the second connecting part being rotatably connected to the support frame;

[0009] A foot-shaped component is rotatably connected to the first connecting part, and the foot-shaped component can apply a preset pressure to the side pedal.

[0010] A drive assembly, the drive end of which is connected to the third connecting part, so as to drive the first connecting part to reciprocate around the second connecting part in a direction close to or away from the side pedal.

[0011] In one possible implementation, the swing arm has a first end and a second end, a first connecting portion is disposed near the first end, a third connecting portion is disposed near the second end, and the second connecting portion is detachably connected to the support frame.

[0012] In one possible implementation, the side pedal durability testing device further includes a transition member detachably disposed at the second connecting portion of the swing arm, and the transition member is also rotatably connected to the support frame.

[0013] In one possible implementation, the support frame is provided with a plurality of rotating shafts, which are spaced apart in the vertical direction;

[0014] The transition piece is provided with a rotating hole, and the rotating hole is sleeved on one of the rotating shafts;

[0015] A limiting member is detachably provided on the rotating shaft, and the limiting member is used to prevent the transition member from disengaging from the rotating shaft on which it is fitted.

[0016] In one possible implementation, the length of the swing arm is adjustable along its length direction.

[0017] In one possible implementation, the swing arm includes a first rod and a second rod, the first rod having a receiving groove, and one end of the second rod being movably inserted into the receiving groove. The length of the swing arm can be adjusted by adjusting the position of one end of the second rod within the receiving groove.

[0018] In one possible implementation, the swing arm includes a first rod, a second rod, and a locking member. The first rod and the second rod are rotatably connected. When the second rod rotates relative to the first rod in a direction away from the first rod until both the first rod and the second rod are along the length direction of the swing arm, the swing arm is in an extended state. When the second rod rotates relative to the first rod in a direction close to the first rod until the second rod overlaps the first rod, the swing arm is in a folded state. The locking member can lock the second rod and the first rod when the swing arm is in the extended state, so as to fix the second rod relative to the first rod.

[0019] In one possible implementation, the drive assembly includes a telescopic cylinder whose extension and retraction direction is parallel to the vertical direction, and the extension and retraction end of the telescopic cylinder is connected to the third connecting portion.

[0020] In one possible implementation, the side pedal durability testing device further includes a connecting rod fixedly connected to the first connecting part, the connecting rod being connected to the foot contour member via a universal joint.

[0021] In one possible implementation, the side pedal durability testing device further includes a pressure sensor and / or a counter disposed on the foot contour member, wherein the pressure sensor is used to detect the pressure exerted by the foot contour member on the side pedal, and the counter is used to detect the number of times the foot contour member steps on the side pedal.

[0022] Compared with the prior art, this application has at least the following beneficial effects:

[0023] Compared to traditional side pedal durability testing devices with large and redundant components such as support frames and gantry frames, this embodiment adopts a simplified structure combining a support frame and a swing arm, significantly reducing the overall size. In vehicle testing scenarios, it can flexibly adapt to the compact space under the chassis, effectively avoiding rigid interference with vehicle chassis longitudinal beams, wheel arches, and other components, ensuring the safe and orderly conduct of the test process, and reducing the potential risk of damage to related vehicle components.

[0024] In addition, the foot-shaped component is rotatably connected to the first connecting part of the swing arm and can apply a preset pressure to the side pedal. Combined with the reciprocating swing of the swing arm around the second connecting part, it can accurately simulate the stepping action and force transmission of the driver and passengers when getting on and off the side pedal. This design can realistically reproduce the stress state of the side pedal in actual use, making the test results closer to the actual working conditions, thereby reliably evaluating the durability of the side pedal.

[0025] Furthermore, this testing device directly drives the swing arm to reciprocate through the drive assembly, resulting in a short transmission path and simple structure, reducing energy loss and potential failure points. Compared to the complex installation and debugging process of traditional testing devices, this solution's testing device is easier to deploy and operate quickly in a vehicle environment, effectively improving testing efficiency.

[0026] Furthermore, the rotatable connection design of the swing arm and the rotatable characteristics of the foot-shaped component allow it to adapt to the differences in installation angle and position of side pedals in different vehicle models. By adjusting the preset pressure and swing parameters, it can meet the durability testing requirements of side pedals of different specifications, demonstrating strong versatility and adaptability.

[0027] In summary, through structural innovation, this test device not only solves the problems of poor spatial adaptability and easy interference of traditional devices, but also improves the authenticity and reliability of the test, providing an effective guarantee for the accurate evaluation of the durability performance of the side pedal. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of the test device provided in the embodiment of this utility model;

[0030] Figure 2 A schematic diagram showing the connection between the support frame and the swing arm via a transition piece in the test apparatus provided in this embodiment of the utility model;

[0031] Figure 3 A partial exploded view of the transition piece and support frame provided in an embodiment of this utility model;

[0032] Figure 4 Side view of the support frame provided in an embodiment of this utility model;

[0033] Figure 5 A cross-sectional view of a swing arm provided for an embodiment of this utility model;

[0034] Figure 6 A schematic diagram of another swing arm provided in an embodiment of this utility model;

[0035] Figure 7 A schematic diagram of the structure of the test device provided in the embodiment of this utility model, which includes a pressure sensor.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10-Side pedals;

[0038] 100-Side pedal durability testing device;

[0039] 110 - Support frame; 111 - Rotating shaft; 112 - Limiting component;

[0040] 120 - Swing arm; 121 - First connecting part; 122 - Second connecting part; 123 - Third connecting part; 124 - First end; 125 - Second end; 120a - First rod; 120a1 - Receiving groove; 120b - Second rod; 120c - Locking element;

[0041] 130 - Foot-shaped component;

[0042] 140 - Drive components;

[0043] 150 - Transition piece; 151 - Rotation hole;

[0044] 160-Connecting rod;

[0045] 170 - Pressure sensor. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0048] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0049] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0050] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended 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.

[0051] As described in the background section of this application, in related technologies, side tread durability testing devices are bulky due to their inclusion of multiple large components and redundant overall structure. In vehicle testing scenarios, they are difficult to adapt to the compact space layout, and their installation easily interferes with the vehicle's chassis longitudinal beams, wheel arches, etc., not only affecting the normal conduct of the test but also potentially damaging related vehicle components, leading to inaccurate test results and an inability to reliably assess the side tread's durability. Therefore, this utility model provides a side tread durability testing device that solves the problem of interference with vehicle chassis, wheel arches, and other related components, which prevents the test from proceeding normally and affects the accuracy of the test results.

[0052] The present application will be described in detail below through specific embodiments:

[0053] See Figure 1 This application provides a side pedal durability testing device 100, which includes a support frame 110, a swing arm 120, a foot contouring component 130, and a drive assembly 140. The swing arm 120 includes a first connecting portion 121, a second connecting portion 122, and a third connecting portion 123, which are located along the length of the swing arm 120. Figure 1 (In the direction indicated by the X arrow) the second connecting part 122 is rotatably connected to the support frame 110; the foot contouring part 130 is rotatably connected to the first connecting part 121, and the foot contouring part 130 can apply a preset pressure to the side pedal 10; the driving end of the drive assembly 140 is connected to the third connecting part 123 to drive the first connecting part 121 to swing around the second connecting part 122 in a direction close to or away from the side pedal 10.

[0054] Therefore, compared to the large and redundant components such as the support frame and gantry of the traditional side pedal durability testing device 100, the simplified structure combining the support frame 110 and the swing arm 120 significantly reduces the overall size. In whole-vehicle testing scenarios, it can flexibly adapt to the compact space under the chassis, effectively avoiding rigid interference with vehicle chassis longitudinal beams, wheel arches, and other components, ensuring the safe and orderly conduct of the test process, and reducing the potential risk of damage to related vehicle components.

[0055] Furthermore, in this embodiment, the test device does not need to be assembled with the vehicle during the assembly process. It is only necessary to ensure that the foot-shaped component 130 can step on the side pedal. The drive component 140 can have a certain distance from the vehicle, which further avoids interference between the test device and vehicle components during assembly or testing.

[0056] In addition, the foot-shaped component 130 is rotatably connected to the first connecting part 121 of the swing arm 120 and can apply a preset pressure to the side pedal 10. Combined with the reciprocating swing of the swing arm 120 around the second connecting part 122, it can accurately simulate the stepping action and force transmission of the driver and passengers when getting on and off the side pedal 10. This design can realistically reproduce the stress state of the side pedal 10 in actual use, making the test results closer to the actual working conditions, thereby reliably evaluating the durability of the side pedal 10.

[0057] Furthermore, the test device directly drives the swing arm 120 to reciprocate via the drive component 140, resulting in a short transmission path and simple structure, reducing energy loss and potential failure points. Compared to the complex installation and debugging process of traditional test devices, this solution's test device is easier to deploy and operate quickly in a vehicle scenario, effectively improving testing efficiency.

[0058] Furthermore, the rotatable connection design of the swing arm 120 and the rotatable characteristics of the foot-shaped component 130 allow it to adapt to the differences in installation angle and position of the side pedal 10 in different vehicle models. By adjusting the preset pressure and swing parameters, the durability testing requirements of side pedals 10 of different specifications can be met, demonstrating strong versatility and adaptability.

[0059] In summary, through structural innovation, this test device not only solves the problems of poor spatial adaptability and easy interference of traditional devices, but also improves the authenticity and reliability of the test, providing an effective guarantee for the accurate evaluation of the durability performance of the side pedal 10.

[0060] It should be noted that the first connecting part 121 and the third connecting part 123 can be located at both ends of the swing arm 120 or near the end. The second connecting part 122 can be located in the middle of the swing arm 120 or at any position between the middle and the end.

[0061] Furthermore, the distances between the first connecting part 121 and the second connecting part 122, and between the second connecting part 122 and the third connecting part 123, can be equal or unequal, and those skilled in the art can design according to actual needs.

[0062] In some possible embodiments, see Figure 1 The swing arm 120 has a first end 124 and a second end 125. A first connecting part 121 is disposed near the first end 124, a third connecting part 123 is disposed near the second end 125, and a second connecting part 122 is detachably connected to the support frame 110.

[0063] In this embodiment, the second connecting part 122 serves as the rotation fulcrum of the swing arm 120. Its detachable design allows for flexible adjustment of the position of the rotation fulcrum between the first end 124 and the second end 125 according to the installation height, force point position, and test standards of the side pedal 10 of different vehicle models. Furthermore, by changing the position of the rotation fulcrum, the lever arm length of the swing arm 120 can be dynamically adjusted, so that the pressure, swing amplitude, and other parameters of the foot contouring part 130 on the side pedal 10 can be accurately matched to the actual pedaling conditions (such as the difference in pedaling force of drivers and passengers of different weights), significantly improving the adaptability of the device to diverse test scenarios.

[0064] Furthermore, the installation position and force characteristics of the side pedal 10 differ for vehicle models with different wheelbases and ground clearances. The detachable design of the second connecting part 122 allows the same swing arm 120 to be quickly adapted to the testing needs of different vehicle models by changing the fulcrum at different positions. This eliminates the need to design a dedicated swing arm 120 for each vehicle model, significantly reducing the manufacturing cost and inventory pressure of the equipment and improving the versatility of the testing device.

[0065] Furthermore, the second connecting part 122, as a core load-bearing component of the swing arm 120, is prone to wear during long-term, high-frequency swing tests. Its detachable design allows this component to be removed and replaced individually without replacing the entire swing arm 120, reducing maintenance costs and downtime. At the same time, if it is necessary to upgrade the swing parameters of the testing device (such as increasing the swing amplitude), only the installation position of the second connecting part 122 needs to be adjusted, without requiring large-scale modifications to the main structure of the device, thus extending the overall service life of the equipment.

[0066] Furthermore, by adjusting the position of the second connecting part 122, the motion trajectory of the swing arm 120 during the test can be optimized. Within the compact vehicle test space, the range of motion of the swing arm 120 can be reduced by shortening the unnecessary lever arm length, thus avoiding interference with other components of the vehicle chassis during reciprocating swing, further improving the spatial adaptability of the device in a vehicle scenario.

[0067] It should be noted that the second connecting part 122 can be located anywhere between the first end 124 and the second end 125.

[0068] In some possible embodiments, see Figure 2 The side pedal durability testing device 100 also includes a transition piece 150, which is detachably disposed on the second connecting part 122 of the swing arm 120, and the transition piece 150 is also rotatably connected to the support frame 110.

[0069] Therefore, the transition piece 150 is detachably mounted on the second connecting portion 122 of the swing arm 120, allowing for flexible adjustment of the connection parameters (such as connection spacing and angle deviation) between the swing arm 120 and the support frame 110 by replacing the transition piece 150 with different specifications (such as transition pieces 150 with different lengths, thicknesses, or connection hole positions). For different vehicle models with varying side pedal 10 installation heights, tilt angles, and chassis space differences, no overall modification of the swing arm 120 or support frame 110 is required. Simply replacing the transition piece 150 enables rapid adaptation of the device to different testing scenarios, significantly improving the device's versatility for multi-vehicle and multi-condition testing and reducing the development cost of specialized equipment.

[0070] Furthermore, the transition piece 150 and the support frame 110 are rotatably connected (e.g., through bearings, bushings, etc.), and the detachable design allows for flexible selection of suitable rotating pair types (e.g., sliding bearings, rolling bearings). This design reduces the frictional resistance when the swing arm 120 rotates around the support frame 110, making the swinging motion smoother and avoiding jamming caused by rigid connections or improper fit clearances. Simultaneously, the transition piece 150 can serve as a precision compensation component. By selecting transition pieces 150 with different tolerance levels, the position of the rotation axis 111 of the swing arm 120 can be adjusted, ensuring that the swing trajectory of the foot contour piece 130 closely matches the actual stepping path, improving the realism of the force simulation on the opposite pedal 10, and thus enhancing the reliability of the test results.

[0071] Furthermore, the detachable nature of the transition piece 150 allows for the selection of ultra-thin or irregularly shaped transition pieces 150 based on space constraints in the vehicle testing scenario (such as the clearance between the chassis longitudinal beams and wheel arches). Simultaneously, the rotatable connection between the transition piece 150 and the support frame 110 optimizes the motion envelope of the swing arm 120. By adjusting the installation angle of the transition piece 150, the maximum swing radius of the swing arm 120 during reciprocating motion is reduced, further lowering the risk of collision with vehicle components and ensuring the safety of the testing process.

[0072] It is evident that the transition piece 150, through its combination of detachable design and rotatable connection, enhances the versatility, testing accuracy, and spatial adaptability of the testing device while optimizing the ease of equipment maintenance.

[0073] In some possible embodiments, see Figure 3 and Figure 4 The support frame 110 is provided with multiple rotating shafts 111, which are arranged in the vertical direction. Figure 3 (In the direction indicated by the Y arrow) are spaced apart; a rotating hole 151 is provided on the transition piece 150, and the rotating hole 151 is sleeved on a rotating shaft 111; a limiting piece 112 is detachably provided on the rotating shaft 111, and the limiting piece 112 is used to prevent the transition piece 150 from disengaging from the rotating shaft 111 on which it is sleeved.

[0074] The aforementioned plurality of rotating shafts 111 refers to two or more rotating shafts 111.

[0075] In this embodiment, multiple rotating shafts 111 are spaced apart vertically, allowing the transition piece 150 to be installed on rotating shafts 111 of different heights, thus enabling rapid adjustment of the overall height. For example, when testing side pedals 10 with different ground clearances (180-300mm), there is no need to replace the support frame 110 or modify the main structure. Simply by fitting the rotating hole 151 of the transition piece 150 onto the rotating shaft 111 of the corresponding height, the foot contour piece 130 can be precisely aligned with the stepping area of ​​the side pedal 10. This design expands the height adjustment range of the testing device, effectively adapting to the differences in installation height of side pedals 10 for different vehicle models, and significantly improving the device's versatility for testing multiple vehicle models.

[0076] Furthermore, the engagement of the rotating hole 151 with the rotating shaft 111 enables a rotatable connection between the transition piece 150 and the support frame 110. Combined with the limiting component 112 (such as a shaft end retaining ring or locking nut) on the rotating shaft 111, this effectively prevents the transition piece 150 from axially disengaging from the rotating shaft 111 during swinging. This dual-constraint structure avoids the problem of component loosening due to vibration in traditional connections, ensuring the stability of the swing arm 120 during high-frequency reciprocating motion. Simultaneously, the detachable design of the limiting component 112 allows for adjustment of the locking force based on the thickness of the transition piece 150, preventing axial movement of the transition piece 150, ensuring the accuracy of pressure application from the foot contouring component 130 to the side pedal 10, and improving the reliability of test results.

[0077] In some other embodiments, the support frame 110 is provided with a fixed shaft, the middle part of the fixed shaft is provided with a first groove along the outer peripheral wall of the fixed shaft, the transition member 150 is provided with a second groove, the second groove is rotatably sleeved on the fixed shaft and located in the first groove.

[0078] In some possible embodiments, the length of the swing arm 120 is adjustable along its length.

[0079] Because the horizontal distance between the side pedal 10 and the mounting base (such as the support frame 110) varies significantly between different vehicle models (for example, the horizontal distance from the leading edge of the side pedal 10 to the wheel arch can differ by 150-200mm between a vehicle with a wheelbase of 3170mm and a vehicle with a wheelbase of 2700mm), the swing arm 120 is length-adjustable (e.g., through a telescopic section, a detachable extension section, etc.). By adjusting the distance between the first connecting part 121 (the connecting end of the foot contour piece 130) and the second connecting part 122 (the fulcrum), the foot contour piece 130 can be precisely aligned with the effective stepping area of ​​the side pedal 10 (usually the force point in the middle of the pedal). This eliminates the need for custom-designed swing arms 120 for different vehicle models, significantly improving the adaptability of the testing device to multiple vehicle types.

[0080] Furthermore, the length of the swing arm 120 is adjustable, allowing the radius of the swing trajectory of the foot contour member 130 to be adjusted by changing the lever arm length (the distance between the first connecting part 121 and the second connecting part 122). When the length of the swing arm 120 is shortened, the swing trajectory is smoother, suitable for simulating small-amplitude pedaling; when the length of the swing arm 120 is extended, the trajectory curvature increases, which can reproduce large-amplitude pedaling movements, making the testing process closer to actual usage conditions. Simultaneously, with preset pressure parameters, the magnitude of the pedaling force can be precisely controlled, enhancing the reference value of the test results.

[0081] Furthermore, in whole-vehicle testing scenarios, the side step 10 is often surrounded by components such as chassis guard plates and side skirts, limiting the available space for movement (for example, the horizontal gap between the side step 10 and the body is only 100-150mm in some models). The adjustable length of the swing arm 120 allows for flexible shortening of its overall length according to space constraints. For example, in tests on models with small gaps, the length can be shortened from 800mm to 600mm, reducing the maximum radius of motion of the swing arm 120 during swing and preventing collisions with body components. Simultaneously, the length adjustment can be combined with the height adjustment of the rotating shaft 111 to form a two-dimensional adjustment system for both length and height, enabling precise avoidance of interference in complex spatial layouts.

[0082] In some possible embodiments, see Figure 5 The swing arm 120 includes a first rod 120a and a second rod 120b. The first rod 120a is provided with a receiving groove 120a1. One end of the second rod 120b is movably inserted into the receiving groove 120a1. The length of the swing arm 120 is adjusted by adjusting the position of one end of the second rod 120b in the receiving groove 120a1.

[0083] The first rod 120a and the second rod 120b can be cylindrical, polygonal, or the like, and the extension direction of the receiving groove 120a1 is the same as the length direction of the first rod 120a.

[0084] In this embodiment, the receiving groove 120a1 of the first rod 120a and the insert-type engagement of the second rod 120b form a nested structure, which significantly enhances the overall rigidity of the swing arm 120 compared to spliced ​​designs such as detachable extension sections. For example, when the testing device applies a dynamic stepping force of 150-300N, the contact area of ​​the nested structure (the contact surface between the inner wall of the receiving groove 120a1 and the outer wall of the second rod 120b) is larger than that of a traditional pin connection, resulting in more uniform force transmission and avoiding localized stress concentration.

[0085] Furthermore, the second rod 120b can be fixed at any position within the receiving groove 120a1 (e.g., locked at any insertion depth by a locking bolt), enabling stepless length adjustment within a certain range compared to segmented adjustment (e.g., pre-set multiple adjustment holes). This continuous adjustment can precisely match the horizontal distance differences of the side pedals 10 of different vehicle models, achieving millimeter-level adaptation through fine-tuning without replacing parts. This avoids the problem of mismatch between adjustment gears and actual needs in traditional segmented adjustment, thereby improving the adaptation accuracy of the testing device.

[0086] In some possible embodiments, see Figure 6 The swing arm 120 includes a first rod 120a, a second rod 120b, and a locking member 120c. The first rod 120a and the second rod 120b are rotatably connected. When the second rod 120b rotates relative to the first rod 120a in a direction away from the first rod 120a until both the first rod 120a and the second rod 120b are along the length of the swing arm 120, the swing arm 120 is in an extended state. When the second rod 120b rotates relative to the first rod 120a in a direction close to the first rod 120a until the second rod 120b is stacked on top of the first rod 120a, the swing arm 120 is in a folded state. The locking member 120c can lock the second rod 120b and the first rod 120a when the swing arm 120 is in an extended state, so that the second rod 120b is fixed relative to the first rod 120a.

[0087] Therefore, with the second rod 120b stacked on top of the first rod 120a in the folded state, the overall length of the swing arm 120 can be shortened by 50% (for example, 800mm in the unfolded state, only 400mm after folding). This design significantly improves the space utilization of the equipment in non-testing scenarios: when stored in the laboratory, the number of devices that can be accommodated in the same area increases by more than 100%; when transported across sites (such as from the workshop to the vehicle testing ground), the folded device can be moved by a small forklift or freight elevator, avoiding the problem of requiring large lifting equipment for the traditional fixed-length swing arm 120, and reducing transportation costs.

[0088] In addition, the locking function of the locking component 120c in the unfolded state (such as by using an eccentric wheel for locking or bolt fastening) can ensure the collinearity accuracy of the first rod 120a and the second rod 120b, making the overall rigidity of the swing arm 120 close to that of a one-piece structure, thereby ensuring the testing accuracy and safety of the test device.

[0089] In some possible embodiments, see Figure 7 The drive assembly 140 includes a telescopic cylinder, the telescopic cylinder's telescopic direction is parallel to the vertical direction, and the telescopic end of the telescopic cylinder is connected to the third connecting part 123.

[0090] Therefore, the extension and retraction direction of the telescopic cylinder is parallel to the vertical direction, and its output force acts vertically on the third connecting part 123. Through the lever structure of the swing arm 120 (with the second connecting part 122 as the rotation fulcrum), it can be efficiently converted into the pedaling force of the first connecting part 121. Compared with the tilt drive method (force decomposed into vertical and horizontal components), the energy loss of the vertical drive force is reduced. At the same time, the vertical extension and retraction trajectory is stable, with no lateral force generated, avoiding the swing arm 120 from jamming during high-frequency swinging, and ensuring that the action remains consistent even after 100,000 durability tests.

[0091] Of course, in other embodiments, the drive assembly 140 also includes a servo motor and a ball screw, wherein the ball screw is helically connected to the third connecting portion 123.

[0092] In some possible embodiments, see Figure 7 The side pedal durability testing device 100 also includes a connecting rod 160 fixedly connected to the first connecting part 121, and the connecting rod 160 is connected to the foot contouring part 130 through a universal joint.

[0093] Therefore, the installation angle of the side pedal 10 varies significantly between different vehicle models (e.g., tilt angles of 3°-15°), and the pedal surface may have slight curvature (e.g., 0.5°-2° undulations caused by anti-slip stripes). The universal joint allows the foot contouring component 130 to rotate at multiple angles within a preset range, ensuring that it always maintains surface contact with the pedal surface rather than point contact. This avoids premature wear of the pedal due to localized stress concentration (e.g., breakage of anti-slip strips), thus affecting the accuracy of the test results.

[0094] In addition, during the test, the reciprocating motion of the swing arm 120 may cause a slight angle between the connecting rod 160 and the normal direction of the side pedal 10 due to installation errors. The universal joint compensates for this deviation through multi-directional rotation, so that the preset pressure is evenly distributed on the contact surface of the foot contour part 130, rather than concentrated on the edge, thereby effectively reducing the risk of pedal structure damage caused by the error of the test device itself.

[0095] In some possible embodiments, see Figure 7The side pedal durability testing device 100 also includes a pressure sensor 170 and / or a counter disposed on the foot contour member 130. The pressure sensor 170 is used to detect the pressure exerted by the foot contour member 130 on the side pedal 10, and the counter is used to detect the number of times the foot contour member 130 steps on the side pedal 10.

[0096] Therefore, the pressure sensor 170 can detect the actual pressure exerted by the foot contouring component 130 on the side pedal 10 in real time and feed it back to the control system via an electrical signal. Combined with the closed-loop control of the drive component 140 (such as a telescopic cylinder), the pressure deviation can be dynamically corrected: when the detected value is lower than the preset value (such as 150N), the system automatically increases the cylinder pressure; when the pressure exceeds the threshold (such as 300N), the output is immediately reduced to avoid unnatural damage to the side pedal 10 due to overload.

[0097] The counter automatically records the number of pedal strokes (resolution 1) by recognizing the contact signal between the foot contouring component 130 and the side pedal 10 (such as the trigger threshold of the pressure sensor 170). In durability testing, a target number of strokes can be preset (such as 100,000 strokes, simulating a 5-year vehicle usage cycle). When the count reaches the threshold, the machine automatically stops to avoid unnecessary wear and tear on components caused by overtesting.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A side tread plate durability testing device, characterized in that, include: Support frame; A swing arm, the swing arm including a first connecting part, a second connecting part and a third connecting part, the first connecting part, the second connecting part and the third connecting part being spaced apart along the length direction of the swing arm, and the second connecting part being rotatably connected to the support frame; A foot-shaped component is rotatably connected to the first connecting part, and the foot-shaped component can apply a preset pressure to the side pedal. A drive assembly, the drive end of which is connected to the third connecting part, so as to drive the first connecting part to swing around the second connecting part in a direction close to or far from the side pedal.

2. The side tread durability testing device according to claim 1, characterized in that, The swing arm has a first end and a second end, the first connecting part is disposed near the first end, the third connecting part is disposed near the second end, and the second connecting part is detachably connected to the support frame.

3. The side tread durability testing device according to claim 2, characterized in that, The side pedal durability testing device also includes a transition piece, which is detachably disposed at the second connecting part of the swing arm, and the transition piece is also rotatably connected to the support frame.

4. The side tread durability testing device according to claim 3, characterized in that, The support frame is provided with multiple rotating shafts, which are spaced apart along the vertical direction; The transition piece is provided with a rotating hole, and the rotating hole is sleeved on one of the rotating shafts; A limiting member is detachably provided on the rotating shaft, and the limiting member is used to prevent the transition member from disengaging from the rotating shaft on which it is fitted.

5. The side tread durability testing device according to claim 1, characterized in that, The length of the swing arm is adjustable along its length direction.

6. The side tread durability testing device according to claim 5, characterized in that, The swing arm includes a first rod and a second rod. The first rod is provided with a receiving groove, and one end of the second rod is movably inserted into the receiving groove. The length of the swing arm can be adjusted by adjusting the position of one end of the second rod in the receiving groove.

7. The side tread durability testing device according to claim 5, characterized in that, The swing arm includes a first rod, a second rod, and a locking member. The first rod and the second rod are rotatably connected. When the second rod rotates relative to the first rod in a direction away from the first rod until both the first rod and the second rod are along the length direction of the swing arm, the swing arm is in an extended state. When the second rod rotates relative to the first rod in a direction close to the first rod until the second rod overlaps the first rod, the swing arm is in a folded state. The locking member can lock the second rod and the first rod when the swing arm is in the extended state, so as to fix the second rod relative to the first rod.

8. The side tread durability testing apparatus according to any one of claims 1-7, characterized in that, The drive assembly includes a telescopic cylinder, the telescopic cylinder's extension and retraction direction is parallel to the vertical direction, and the extension and retraction end of the telescopic cylinder is connected to the third connecting part.

9. The side tread durability testing apparatus according to any one of claims 1-7, characterized in that, The side pedal durability testing device also includes a connecting rod fixedly connected to the first connecting part, and the connecting rod is connected to the foot contouring part through a universal joint.

10. The side tread durability testing apparatus according to any one of claims 1-7, characterized in that, The side pedal durability testing device further includes a pressure sensor and / or a counter disposed on the foot contouring component. The pressure sensor is used to detect the pressure exerted by the foot contouring component on the side pedal, and the counter is used to detect the number of times the foot contouring component steps on the side pedal.

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