A method and device for testing the bending fatigue degree of a steel wire rope of an intelligent vehicle roller

Abstract

This invention discloses a method and apparatus for testing the bending fatigue of a steel wire rope in a smart vehicle drum. The apparatus includes a container plate, a steel wire rope clamping assembly mounted on the container plate, and a camera assembly mounted on the opposite side of the container plate. The steel wire rope clamping assembly holds the center point of the steel wire rope to keep it constant. The back plate of the container plate has steel wire rope bending drive assemblies above and below the steel wire rope clamping assembly. These drive assemblies fix the upper and lower ends of the steel wire rope and drive them to swing around the center point. The camera assembly captures an image of the center point of the steel wire rope while the upper and lower ends swing around the center point. The camera assembly is connected to a processing system that tests the bending fatigue of the steel wire rope based on the image changes of its center point. This invention can quickly and accurately identify image changes in the center point of the steel wire rope.

Description

Technical Field

[0001] This invention relates to the field of wire rope bending fatigue testing technology, specifically to a method and apparatus for testing the bending fatigue of a smart vehicle drum wire rope. Background Technology

[0002] Steel cables play a vital role in automobiles, primarily for traction, braking, suspension, and load-bearing. For example, steel cables are used in the braking system to transmit braking force; in the suspension system, they connect the vehicle body and tires, providing support and shock absorption; and in the traction system, they are used for towing trailers. The quality of the steel cables directly affects the vehicle's safety. Low-quality steel cables are prone to breakage or wear, affecting the normal operation of the braking and suspension systems, thus impacting vehicle safety.

[0003] Therefore, during automobile production, it is necessary to conduct a bending test on each steel wire rope purchased and used to determine whether the quality of the steel wire rope meets the requirements.

[0004] Most existing bending tests involve fixing one end of a wire rope and using a drive assembly to move the other end of the wire rope closer to or further away from the fixed end. This results in a repetitive bending-straightening-bending test, where the bending fatigue of the wire rope is tested by observing changes in the image of the wire rope's center point. However, because the position of the wire rope's center point is constantly changing, it is inconvenient to track and capture images of these changes, leading to poor accuracy in the bending fatigue test results. Summary of the Invention

[0005] The purpose of this invention is to provide a method and apparatus for testing the bending fatigue of a steel wire rope in a smart vehicle, in order to solve the technical problem that the existing technology is inconvenient to track and capture images of the center point of the steel wire rope, resulting in poor accuracy of the bending fatigue test results.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] A bending fatigue testing device for a steel wire rope drum in an intelligent vehicle includes:

[0008] The container plate, the wire rope clamping assembly disposed on the container plate, and the shooting assembly disposed on the opposite side of the container plate, wherein the wire rope clamping assembly is used to hold the center point of the wire rope so that the center point of the wire rope remains unchanged.

[0009] The back plate of the container is provided with wire rope bending drive components above and below the wire rope clamping assembly. The wire rope bending drive components are used to fix the upper and lower ends of the wire rope and drive the upper and lower ends of the wire rope to swing around the center point of the wire rope. The shooting component is used to capture an image of the center point of the wire rope when the upper and lower ends of the wire rope swing around the center point of the wire rope.

[0010] The imaging component is connected to a processing system that tests the bending fatigue of the wire rope based on image changes at the center point of the wire rope.

[0011] As a preferred embodiment of the present invention, the wire rope clamping assembly includes a lifting drive assembly installed on the back plate of the container plate, and a step plate for placing the wire rope. The lifting drive assembly clamps and releases the wire rope by moving up and down.

[0012] The lifting drive assembly includes a lifting plate and a through hole groove passing through the lifting plate. A servo motor is installed on the back plate of the container plate. A lead screw bushing is installed on the working shaft of the servo motor, and the lead screw bushing is fixedly installed in the through hole groove. An arc-shaped extrusion plate is provided on the upper side of the lifting plate facing the wire rope. An arc-shaped extrusion plate is also provided on the opposite side of the lifting plate at the end of the step plate. When the lifting plate is driven to descend until the two arc-shaped extrusion plates are aligned, the wire rope is fixed.

[0013] As a preferred embodiment of the present invention, a compression spring wrapped around the working shaft of the servo motor is provided between the bottom of the lifting plate and the back plate of the container plate.

[0014] The step plate has a cutting groove on the side facing the lifting plate, and the arc-shaped extrusion plate at the upper end of the side of the lifting plate moves up and down along the cutting groove to clamp, fix and release the wire rope.

[0015] As a preferred embodiment of the present invention, the wire rope bending drive assembly includes a swing drive mechanism and a rope end fixing mechanism disposed at the upper end of the swing drive mechanism.

[0016] The rope end fixing mechanism is used to fix the two ends of the wire rope, and the swing drive mechanism is used to drive the wire rope segments located above and below the wire rope clamping assembly to swing synchronously around the swing point, so as to drive the wire rope to perform a bending fatigue test around the swing point.

[0017] As a preferred embodiment of the present invention, there is a redundant space between the bottom of the stepped plate and the back plate of the container plate. The swing drive mechanism includes a swing plate installed in the redundant space and a first linear slot formed at the lower end of the swing plate. A drive motor is installed on the back plate of the container plate. A connecting rod is installed on the drive shaft of the drive motor, and the connecting rod is installed in the first linear slot to drive the swing plate to swing around the center point of the wire rope.

[0018] The rope end fixing mechanism is installed at the upper end of the swing plate to fix both ends of the wire rope.

[0019] As a preferred embodiment of the present invention, the back plate of the container plate is provided with a reinforcing component above the drive motor. The reinforcing component includes a flush plate disposed on the back plate of the container plate and a second linear slot disposed on the upper end of the swing plate. An I-shaped clamping plate is installed in the flush plate, and the I-shaped clamping plate combines the flush plate and the swing plate together.

[0020] The side surface of the swing plate and the side surface of the step plate are on the same plane, and the side surface of the swing plate is provided with a plurality of fixing parts for securing the wire rope.

[0021] As a preferred embodiment of the present invention, the rope end fixing mechanism includes a clamping member and a hook member disposed behind the clamping member. A through hole for the steel wire rope to pass through is formed at the center of the clamping member. The hook member is used to fix the rope end of the steel wire rope and drive the rope end of the steel wire rope to move into the through hole.

[0022] The hook includes a pneumatic cylinder and a hook disposed on the telescopic shaft of the pneumatic cylinder. The telescopic shaft of the pneumatic cylinder can pass through a through hole at the center of the clamping member. After the hook hooks the end of the wire rope, it pulls the wire rope to move into the through hole and the end of the wire rope is fixed by the clamping member.

[0023] As a preferred embodiment of the present invention, the clamping member includes an outer through sleeve fixedly installed on the swing plate, and an inner rotating block disposed in the cavity inside the outer through sleeve. The inner rotating block rotates in both directions under the rotation drive assembly. A through hole is provided at the center of the outer through sleeve and the inner rotating block. The clamping member is installed in the rope end fixing mechanism.

[0024] The inner rotating block has multiple evenly distributed and inclined inner grooves on its side. The outer end of each inner groove forms a fixed angle with the outer tangent of the inner rotating block. The same side of the outer through sleeve has a limiting groove. A clamping rod is installed in the limiting groove, and a card seat located in the inner groove is installed on the lower surface of the clamping rod. When the inner rotating block rotates in both directions, it drives the clamping rod to move synchronously in and out.

[0025] As a preferred embodiment of the present invention, the rotary drive assembly includes a cylindrical curved panel disposed on the other side of the inner rotating block, and an oblique tooth groove disposed on the side curved surface of the cylindrical curved panel.

[0026] The same side of the outer through sleeve is provided with a helical gear that meshes with the oblique tooth groove, and the side curved surface of the outer through sleeve is provided with a working motor connected to the helical gear.

[0027] The working motor drives the helical gear to mesh with the helical tooth groove to drive the inner rotating block to rotate forward and backward. When the inner rotating block rotates forward and backward, it drives the clamping rod to move in and outward to clamp and fix the steel wire rope in the hole or release the steel wire rope.

[0028] In addition, the present invention also provides a method for testing the bending fatigue of a steel wire rope drum in an intelligent vehicle, comprising the following steps:

[0029] The wire rope clamping assembly is used to hold the center point of the fixed wire rope, and the surface of the wire rope facing the shooting assembly is always exposed. The wire rope is divided into an upper section and a lower section according to the installation position of the wire rope clamping assembly.

[0030] Secure the ends of the wire rope and tighten it to the appropriate tension;

[0031] The upper and lower sections of the driving wire rope simultaneously bend and swing back and forth around its center position, and an image of the center point of the wire rope is captured at the same time.

[0032] By comparing images of the center point of the wire rope, we can observe whether there are any changes in the state of the wire rope, and test the bending fatigue of the wire rope.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] When measuring the bending fatigue of a steel wire rope, the center point of the steel wire rope is kept constant. Therefore, when the imaging component captures an image of the center point of the steel wire rope, the image will not have a ghosting problem due to the swing of the steel wire rope. The captured image is stable, thus enabling quick and accurate identification of image changes in the center point of the steel wire rope. Attached Figure Description

[0035] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0036] Figure 1 This is a top view schematic diagram of the bending fatigue testing device according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the left-bending structure of the wire rope according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the right-bend structure of the wire rope according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the overall structure of the wire rope clamping assembly according to an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the steel wire rope bending drive assembly according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the overall structure of the rope end fixing mechanism according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the bottom structure of the clamping member according to an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the clamping member in the released state according to an embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the clamping member in a clamping state according to an embodiment of the present invention.

[0045] The labels in the diagram represent the following:

[0046] 1-Container plate; 2-Wire rope clamping assembly; 3-Shooting assembly; 4-Wire rope bending drive assembly; 6-Clamping component; 7-Hanging fastener;

[0047] 21-Lifting drive assembly; 22-Step plate; 23-Cutting groove;

[0048] 211-Lifting plate; 212-Guide hole groove; 213-Servo motor; 214-Lead screw bushing; 215-Arc-surface extrusion plate; 216-Compression spring;

[0049] 41-Swing drive mechanism; 42-Rope end fixing mechanism;

[0050] 411-Swing plate; 412-First linear slot; 413-Drive motor; 414-Connecting rod; 415-Flush plate; 416-Second linear slot; 417-I-shaped clamping plate;

[0051] 61-Outer through sleeve; 62-Inner rotating block; 63-Through hole; 64-Inner groove; 65-Limiting groove; 66-Clamping rod; 67-Card holder; 68-Rotation drive assembly;

[0052] 681 - Cylindrical curved panel; 682 - Angled toothed groove; 683 - Helical gear; 684 - Servo motor.

[0053] 71-Pneumatic cylinder; 72-Hook. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] like Figure 1 As shown, this invention provides a method for testing the bending fatigue of a steel wire rope drum in an intelligent vehicle, comprising the following steps:

[0056] The wire rope clamping assembly is used to hold the center point of the fixed wire rope, and the surface of the wire rope facing the shooting assembly is always exposed. The wire rope is divided into an upper section and a lower section according to the installation position of the wire rope clamping assembly.

[0057] Secure the ends of the wire rope and tighten it to the appropriate tension;

[0058] The upper and lower sections of the driving wire rope simultaneously bend and swing back and forth around its center position, and an image of the center point of the wire rope is captured at the same time.

[0059] By comparing images of the center point of the wire rope, we can observe whether there are any changes in the state of the wire rope, and test the bending fatigue of the wire rope.

[0060] The center point of the wire rope remains constant. Therefore, when the imaging component captures an image of the center point of the wire rope, the image will not have ghosting issues due to the swing of the wire rope. The captured image is stable, which allows for quick and accurate identification of changes in the center point of the wire rope.

[0061] This embodiment also provides a bending fatigue testing device for intelligent vehicle drum wire ropes, such as... Figures 1 to 3As shown, it includes: a container plate 1, a wire rope clamping assembly 2 disposed on the container plate 1, and a shooting assembly 3 disposed on the opposite side of the container plate 1. The wire rope clamping assembly 2 is used to hold the center point of the wire rope so that the center point of the wire rope remains unchanged.

[0062] The back plate of the container plate 1 is provided with wire rope bending drive components 4 above and below the wire rope clamping assembly 2. The wire rope bending drive components 4 are used to fix the upper and lower ends of the wire rope and drive the upper and lower ends of the wire rope to swing around the center point of the wire rope. The imaging component 3 is used to capture an image of the center point of the wire rope when the upper and lower ends of the wire rope swing around the center point of the wire rope.

[0063] The imaging component 3 is connected to a processing system, which tests the bending fatigue of the wire rope based on the image changes at the center point of the wire rope.

[0064] The wire rope bending fatigue test provided in this embodiment is specifically as follows: the center point of the wire rope is fixed, and both ends of the wire rope are driven to reciprocate in an arc shape around the center point. By taking an image of the center point of the wire rope, the state changes of the center point are identified. The bending fatigue changes of the wire rope are analyzed based on the state changes of the center point. When cracks begin to appear at the center point of the wire rope, it means that the wire rope is experiencing bending fatigue. The bending fatigue of the wire rope is characterized by the number of reciprocating arc swings corresponding to the appearance of cracks at the center point. The greater the number of reciprocating arc swings, the lower the bending fatigue; the fewer the number of reciprocating arc swings, the higher the bending fatigue.

[0065] Since the center point of the wire rope remains constant, when the imaging component 3 captures an image of the center point of the wire rope, the image will not have a ghosting problem due to the swing of the wire rope. The captured image is stable, thus enabling quick and accurate identification of image changes in the center point of the wire rope.

[0066] Specifically, in order to achieve fixed clamping of the center point of the wire rope, the wire rope clamping assembly 2 includes a lifting drive assembly 21 installed on the back plate of the container plate 1, and a step plate 22 for placing the wire rope. The lifting drive assembly 21 clamps and releases the wire rope by moving up and down.

[0067] like Figure 4As shown, the lifting drive assembly 21 includes a lifting plate 211 and a through hole groove 212 passing through the lifting plate 211. A servo motor 213 is installed on the back plate of the container plate 1. A lead screw bushing 214 is installed on the working shaft of the servo motor 213, and the lead screw bushing 214 is fixedly installed in the through hole groove 212. A compression spring 216 wrapped around the outside of the working shaft of the servo motor 213 is provided between the bottom of the lifting plate 211 and the back plate of the container plate 1. An arc-shaped extrusion plate 215 is provided on the upper side of the lifting plate 211 facing the wire rope. An arc-shaped extrusion plate 215 is also provided on the opposite side of the lifting plate 211 at the end of the step plate 22. The lifting plate 211 is driven down until the two arc-shaped extrusion plates 215 are aligned to fix the wire rope.

[0068] The side of the step plate 22 facing the lifting plate 211 is provided with a cutting groove 23. The arc-shaped extrusion plate 215 at the upper end of the side of the lifting plate 211 moves up and down along the cutting groove 23 to clamp, fix and release the wire rope.

[0069] The servo motor 213 has a lead screw bushing 214 installed on its working shaft. When the servo motor 213 rotates forward and backward, it can drive the entire lifting plate 211 to move up and down. When the lifting plate 211 moves down, the arc-shaped extrusion plate 215 descends along the cutting groove 24 to clamp and fix the wire rope. When the lifting plate 211 moves up, the arc-shaped extrusion plate 215 rises along the cutting groove 24 to release the wire rope.

[0070] In this embodiment, after the steel wire rope is placed on the end face of the step plate 22, the servo motor 213 is driven to rotate in the forward direction to drive the entire lifting plate 211 to descend until the center position of the arc-shaped extrusion plate 215 on the side of the steel wire rope is lowered to the position of the steel wire rope. When the two arc-shaped extrusion plates 215 are aligned, the steel wire rope is fixed.

[0071] The servo motor 213 is driven to rotate in the opposite direction to raise the entire lifting plate 211 until it rises toward the center of the arc-shaped extrusion plate 215 on the side of the wire rope and disengages from the wire rope. The wire rope is released when the two arc-shaped extrusion plates 215 are misaligned.

[0072] After fixing the center point of the wire rope, use the wire rope bending drive assembly 4 to fix the upper and lower ends of the wire rope and drive the lower and upper sections of the wire rope to reciprocate in a synchronous swinging motion, so that the wire rope as a whole bends and swings around its center point. Combine the image changes of the wire rope center point to test its bending fatigue.

[0073] like Figure 5 As shown, the wire rope bending drive assembly 4 includes a swing drive mechanism 41 and a rope end fixing mechanism 42 disposed on the upper end of the swing drive mechanism 41.

[0074] The rope end fixing mechanism 42 is used to fix the two ends of the wire rope, and the swing drive mechanism 41 is used to drive the wire rope segments located above and below the wire rope clamping assembly 2 to swing synchronously around the swing point, so as to drive the wire rope to perform a bending fatigue test around the swing point.

[0075] Specifically, such as Figures 6 to 9 As shown, the rope end fixing mechanism 42 includes a clamping member 6 and a hook member 7 disposed behind the clamping member 6. A through hole 63 for passing through the wire rope is formed at the center of the clamping member 6. The hook member 7 is used to fix the end of the wire rope and drive the end of the wire rope to move into the through hole 63.

[0076] The hook fastener 7 includes a pneumatic cylinder 71 and a hook 72 disposed on the telescopic shaft of the pneumatic cylinder 71. The telescopic shaft of the pneumatic cylinder 71 can pass through the through hole 63 at the center of the clamping member 6. After the hook 72 hooks the end of the wire rope, it pulls the wire rope to move into the through hole 63 and fixes the end of the wire rope through the clamping member 6.

[0077] Since the ends of the wire rope are folded in half and distributed in the through hole 63 at the center of the clamping member 6 under the action of the pneumatic cylinder 71, the wire rope is taut at this time. In order to ensure the stability of the wire rope during the reciprocating swing process, it is necessary to further reinforce the ends of the wire rope.

[0078] The clamping member 6 includes an outer through sleeve 61 fixedly mounted on the swing plate 411, and an inner rotating block 62 disposed in the cavity inside the outer through sleeve 61. The inner rotating block 62 rotates in both directions under the rotation drive assembly 68. A through hole 63 is provided at the center of the outer through sleeve 61 and the inner rotating block 62. The clamping member 6 is installed in the rope end fixing mechanism 42.

[0079] The inner rotating block 62 has multiple evenly distributed and inclined inner grooves 64 on its side. The outer end of each inner groove 64 forms a fixed angle with the outer tangent of the inner rotating block 62. The same side of the outer through sleeve 61 has a limiting groove 65. A clamping rod 66 is installed in the limiting groove 65. A card seat 67 located in the inner groove 64 is installed on the lower surface of the clamping rod 66. When the inner rotating block 62 rotates in both directions, it drives the clamping rod 66 to move synchronously in and out.

[0080] The rotary drive assembly 68 includes a cylindrical curved panel 681 disposed on the other side of the inner rotating block 62, and an oblique tooth groove 682 disposed on the side curved surface of the cylindrical curved panel 681.

[0081] The same side of the outer through sleeve 61 is provided with a helical gear 683 that meshes with the helical tooth groove 682, and the side curved surface of the outer through sleeve 61 is provided with a working motor 684 that is connected to the helical gear 683.

[0082] The working motor 684 drives the helical gear 683 to mesh with the helical tooth groove 682 to drive the inner rotating block 62 to rotate forward and backward. When the inner rotating block 62 rotates forward and backward, it drives the clamping rod 66 to move in and outward to clamp the wire rope in the fixed hole 63 or release the wire rope.

[0083] In this embodiment, the clamping rod 66 is installed in the inner groove 64 of the inner rotating block 62 via the card holder 67 and can move along the inner groove 64. Therefore, when the servo motor 684 drives the inner rotating block 62 to rotate forward through the engagement of the helical gear 683 and the inclined tooth groove 682, the clamping rod 66 moves toward the through hole 63 under the drive of the inner groove 64 to clamp and fix the wire rope in the through hole 63.

[0084] When the servo motor 684 drives the inner rotating block 62 to reverse through the meshing of the helical gear 683 and the helical tooth groove 682, the clamping rod 66 moves outward under the drive of the inner groove 64 to release the wire rope in the through hole 63.

[0085] In this embodiment, when there are enough clamping rods 66, multi-point clamping and fixing of the wire rope can be achieved, ensuring the clamping stability of the wire rope.

[0086] After the end of the wire rope is fixed, the upper and lower sections of the wire rope are driven by the swing drive mechanism 41 to swing synchronously around the center point of the wire rope, so as to test the bending fatigue of the wire rope.

[0087] There is a redundant space between the bottom of the step plate 22 and the back plate of the container plate 1. The swing drive mechanism 41 includes a swing plate 411 installed in the redundant space and a first linear slot 412 formed at the lower end of the swing plate 411. A drive motor 413 is installed on the back plate of the container plate 1. A connecting rod 414 is installed on the drive shaft of the drive motor 413 and the connecting rod 414 is installed in the first linear slot 412 to drive the swing plate 411 to swing around the center point of the wire rope.

[0088] The rope end fixing mechanism 42 is installed on the upper end of the swing plate 411 to fix both ends of the wire rope.

[0089] When the drive motor 413 rotates, it drives the end of the connecting rod 414 to move up and down in the first linear slot 412, thereby driving the swing plate 411 to swing around the bottom of the swing plate 411, that is, driving the upper end of the wire rope to swing around the bottom of the swing plate 411.

[0090] Since there is redundant space between the bottom of the step plate 22 and the back plate of the container plate 1, and the bottom of the swing plate 411 is installed on the rod at the center of the step plate 22, the swing plate 411 drives the upper and lower sections of the wire rope to bend and swing around its center point when it swings, thus testing the bending fatigue of the wire rope.

[0091] To ensure the stability of the swing plate 411 as it bends and swings around the center point of the wire rope, the back plate of the container plate 1 is equipped with a reinforcing component above the drive motor 413, such as... Figure 5 As shown, the reinforcement assembly includes a flush plate 415 disposed on the back plate of the container plate 1, and a second linear slot 416 disposed on the upper end of the swing plate 411. An I-shaped clamping plate 417 is installed in the flush plate 415, and the I-shaped clamping plate 417 combines the flush plate 415 and the swing plate 411 together.

[0092] The side surface of the swing plate 411 is on the same plane as the side surface of the step plate 22, and the side surface of the swing plate 411 is provided with a plurality of fixing parts for securing the wire rope.

[0093] When the swing plate 411 bends and swings around the center point of the wire rope, the I-shaped clamping plate 417 moves up and down in the second linear slot 416 and moves left and right along the through slot of the flush plate 415, thereby improving the stability of the swing plate 411 when it bends and swings.

[0094] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A device for testing the bending fatigue of a steel wire rope drum in an intelligent vehicle, characterized in that, include: The container plate (1), the wire rope clamping assembly (2) disposed on the container plate (1), and the shooting assembly (3) disposed on the opposite side of the container plate (1), wherein the wire rope clamping assembly (2) is used to hold the center point of the wire rope so that the center point of the wire rope remains unchanged. The back plate of the container plate (1) is provided with wire rope bending drive assembly (4) above and below the wire rope clamping assembly (2). The wire rope bending drive assembly (4) is used to fix the upper and lower ends of the wire rope and drive the upper and lower ends of the wire rope to swing around the center point of the wire rope. The shooting assembly (3) is used to capture an image of the center point of the wire rope when the upper and lower ends of the wire rope swing around the center point of the wire rope. The imaging component (3) is connected to a processing system, which tests the bending fatigue of the wire rope based on the image changes of the center point of the wire rope. The wire rope clamping assembly (2) includes a lifting drive assembly (21) mounted on the back plate of the container plate (1) and a step plate (22) for placing the wire rope. The lifting drive assembly (21) clamps and releases the wire rope by moving up and down. The lifting drive assembly (21) includes a lifting plate (211) and a through hole groove (212) through the lifting plate (211). A servo motor (213) is installed on the back plate of the container plate (1). A lead screw bushing (214) is installed on the working shaft of the servo motor (213), and the lead screw bushing (214) is fixedly installed in the through hole groove (212). The upper side of the lifting plate (211) facing the wire rope is provided with an arc-shaped extrusion plate (215). The end of the step plate (22) is also provided with an arc-shaped extrusion plate (215) on the opposite side of the lifting plate (211). When the lifting plate (211) is driven down to the point where the two arc-shaped extrusion plates (215) are aligned, the wire rope is fixed. The wire rope bending drive assembly (4) includes a swing drive mechanism (41) and a rope end fixing mechanism (42) disposed on the upper end of the swing drive mechanism (41). The rope end fixing mechanism (42) is used to fix the two ends of the wire rope, and the swing drive mechanism (41) is used to drive the wire rope segments located above and below the wire rope clamping assembly (2) to swing synchronously around the swing point, so as to drive the wire rope to perform a bending fatigue test around the swing point. There is a redundant space between the bottom of the step plate (22) and the back plate of the container plate (1). The swing drive mechanism (41) includes a swing plate (411) installed in the redundant space and a first linear slot (412) formed at the lower end of the swing plate (411). A drive motor (413) is installed on the back plate of the container plate (1). A connecting rod (414) is installed on the drive shaft of the drive motor (413), and the connecting rod (414) is installed in the first linear slot (412) to drive the swing plate (411) to swing around the center point of the wire rope. The rope end fixing mechanism (42) is installed on the upper end of the swing plate (411) to fix both ends of the wire rope; The rope end fixing mechanism (42) includes a clamping member (6) and a hook member (7) disposed behind the clamping member (6). The clamping member (6) has a through hole (63) for the steel wire rope to pass through at its center. The hook member (7) is used to fix the end of the steel wire rope and drive the end of the steel wire rope to move into the through hole (63). The hook fastener (7) includes a pneumatic cylinder (71) and a hook (72) provided on the telescopic shaft of the pneumatic cylinder (71). The telescopic shaft of the pneumatic cylinder (71) can pass through the through hole (63) at the center of the clamping member (6). After the hook (72) hooks the end of the wire rope, it pulls the wire rope to move into the through hole (63) and fixes the end of the wire rope through the clamping member (6).

2. The bending fatigue testing device for intelligent vehicle drum wire rope according to claim 1, characterized in that, A compression spring (216) is provided between the bottom of the lifting plate (211) and the back plate of the container plate (1), which is wrapped around the outside of the working shaft of the servo motor (213). The step plate (22) has a cutting groove (23) on the side facing the lifting plate (211). The arc-shaped extrusion plate (215) at the upper end of the side of the lifting plate (211) moves up and down along the cutting groove (23) to clamp, fix and release the wire rope.

3. The bending fatigue testing device for intelligent vehicle drum wire rope according to claim 1, characterized in that, The back plate of the container plate (1) is provided with a reinforcing component above the drive motor (413). The reinforcing component includes a flush plate (415) provided on the back plate of the container plate (1) and a second linear slot (416) provided on the upper end of the swing plate (411). An I-shaped clamping plate (417) is installed in the flush plate (415). The I-shaped clamping plate (417) combines the flush plate (415) and the swing plate (411) together. The side surface of the swing plate (411) and the side surface of the step plate (22) are on the same plane, and the side surface of the swing plate (411) is provided with a plurality of fixing parts for securing the wire rope.

4. The bending fatigue testing device for intelligent vehicle drum wire rope according to claim 1, characterized in that, The clamping member (6) includes an outer through sleeve (61) fixedly installed on the swing plate (411) and an inner rotating block (62) disposed in the cavity inside the outer through sleeve (61). The inner rotating block (62) rotates in both directions under the rotation drive assembly (68). A through hole (63) is provided at the center of the outer through sleeve (61) and the inner rotating block (62). The clamping member (6) is installed in the rope end fixing mechanism (42). The inner rotating block (62) has a plurality of evenly distributed and inclined inner grooves (64) on its side. The outer end of each inner groove (64) forms a fixed angle with the outer tangent of the inner rotating block (62). The outer through sleeve (61) has a limiting groove (65) on the same side. A clamping rod (66) is installed in the limiting groove (65). A card seat (67) in the inner groove (64) is installed on the lower surface of the clamping rod (66). When the inner rotating block (62) rotates in both directions, it drives the clamping rod (66) to move synchronously in and out.

5. The bending fatigue testing device for intelligent vehicle drum wire rope according to claim 4, characterized in that, The rotary drive assembly (68) includes a cylindrical curved panel (681) disposed on the other side of the inner rotating block (62), and an oblique tooth groove (682) disposed on the side curved surface of the cylindrical curved panel (681). The outer through sleeve (61) has a helical gear (683) that meshes with the helical tooth groove (682) on the same side, and a working motor (684) connected to the helical gear (683) is provided on the side curved surface of the outer through sleeve (61). The working motor (684) drives the helical gear (683) to mesh with the helical tooth groove (682) to drive the inner rotating block (62) to rotate forward and backward. When the inner rotating block (62) rotates forward and backward, it drives the clamping rod (66) to move inward and outward to clamp and fix the wire rope in the through hole (63) or release the wire rope.

6. A method for testing the bending fatigue of a steel wire rope drum in an intelligent vehicle, characterized in that, The bending fatigue testing device for a smart vehicle roller wire rope according to any one of claims 1-5 includes the following steps: The wire rope clamping assembly is used to hold the center point of the fixed wire rope, and the surface of the wire rope facing the shooting assembly is always exposed. The wire rope is divided into an upper section and a lower section according to the installation position of the wire rope clamping assembly. Secure the ends of the wire rope and tighten it to the appropriate tension; The upper and lower sections of the driving wire rope simultaneously bend and swing back and forth around its center position, and an image of the center point of the wire rope is captured at the same time. By comparing images of the center point of the wire rope, we can observe whether there are any changes in the state of the wire rope, and test the bending fatigue of the wire rope.

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