Method and device for testing bending fatigue of intelligent vehicle roller steel wire rope

Abstract

The invention discloses an intelligent vehicle roller steel wire rope bending fatigue test method and device, the device comprises a packaging plate, a steel wire rope clamping assembly arranged on the packaging plate, and a shooting assembly arranged on the opposite surface of the packaging plate, and the steel wire rope clamping assembly is used for abutting against the center point of the steel wire rope so as to keep the center point of the steel wire rope unchanged; steel wire rope bending driving assemblies are arranged above and below the steel wire rope clamping assemblies on a back plate of the container plate and used for fixing the upper end and the lower end of a steel wire rope and driving the upper end and the lower end of the steel wire rope to swing with the center point of the steel wire rope as the circle center. The shooting assembly is used for shooting images of the central point of the steel wire rope when the upper and lower ends of the steel wire rope swing around the central point of the steel wire rope; the shooting assembly is connected with a processing system; the processing system tests the bending fatigue of the steel wire rope based on the image change of the central point of the steel wire rope; according to the invention, the image change of the central point of the steel wire rope can be quickly and accurately identified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel wire rope bending fatigue test, in particular to a bending fatigue test method and device for steel wire rope of an intelligent vehicle drum. BACKGROUND

[0002] Steel wire rope plays an important role in automobiles, mainly used for traction, braking, suspension and load bearing, etc. For example, steel wire rope is used in the braking system of an automobile to transmit brake force; in the suspension system, steel wire rope is used to connect the vehicle body and the tires to support and dampen; in the traction system, steel wire rope is used to tow the trailer, and the quality of the steel wire rope directly affects the safety of the automobile. Low-quality steel wire rope is prone to breakage or wear, affecting the normal operation of the braking and suspension systems, and thus affecting the safety of the automobile.

[0003] Therefore, during automobile production, the bending test needs to be performed on the steel wire rope used each time to determine whether the quality of the steel wire rope meets the requirements.

[0004] In the prior art, one end of the steel wire rope is fixed, and the other end is driven by a driving assembly to approach or move away from the fixed end, so that the steel wire rope undergoes repeated bending-straightening-bending tests, and the bending fatigue of the steel wire rope is tested by observing the image changes of the center point of the steel wire rope. However, when testing the bending fatigue of the steel wire rope in this way, the position of the center point of the steel wire rope changes constantly, so it is not convenient to track and photograph the image changes of the center point of the steel wire rope, and the accuracy of the bending fatigue test results is poor. SUMMARY

[0005] The present application aims to provide a bending fatigue test method and device for steel wire rope of an intelligent vehicle drum to solve the technical problem that it is not convenient to track and photograph the image changes of the center point of the steel wire rope, and the accuracy of the bending fatigue test results is poor.

[0006] To solve the above technical problems, the present application specifically provides the following technical solutions:

[0007] A bending fatigue test device for steel wire rope of an intelligent vehicle drum, comprising:

[0008] a pallet, a steel wire rope clamping assembly arranged on the pallet, and a photographing assembly arranged on the opposite side of the pallet, the steel wire rope clamping assembly being used to abut against the center point of the steel wire rope so that the center point of the steel wire rope remains unchanged;

[0009] The backboard of the container board is provided with a steel wire rope bending driving assembly above and below the steel wire rope clamping assembly, the steel wire rope bending driving assembly is used for fixing the upper and lower ends of the steel wire rope and driving the upper and lower ends of the steel wire rope to swing around the center point of the steel wire rope, and the shooting assembly is used for shooting the image of the center point of the steel wire rope when the upper and lower ends of the steel wire rope swing around the center point of the steel wire rope.

[0010] The shooting assembly is connected with a processing system, the processing system tests the bending fatigue degree of the steel wire rope based on the image change of the center point of the steel wire rope.

[0011] As a preferred scheme of the present application, the steel wire rope clamping assembly comprises a lifting driving assembly installed on the backboard of the container board and a stepped plate used for placing the steel wire rope, the lifting driving assembly clamps and releases the steel wire rope by moving up and down;

[0012] The lifting driving assembly comprises a lifting plate and a through hole groove penetrating the lifting plate, a servo motor is installed on the backboard of the container board, a lead screw sleeve is installed on the working shaft of the servo motor, the lead screw sleeve is fixedly installed in the through hole groove, an arc extrusion plate is arranged on the side surface upper end of the lifting plate, an arc extrusion plate is also arranged on the end of the stepped plate on the opposite surface of the lifting plate, and the lifting plate is driven to descend to realize the fixation of the steel wire rope when the two arc extrusion plates are aligned.

[0013] As a preferred scheme of the present application, a compression spring wrapped outside the working shaft of the servo motor is arranged between the bottom of the lifting plate and the backboard of the container board.

[0014] A cutting groove is arranged on the side surface of the stepped plate facing the lifting plate, and the arc extrusion plate on the side surface upper end of the lifting plate is lifted along the cutting groove to clamp and release the steel wire rope.

[0015] As a preferred scheme of the present application, the steel wire rope bending driving assembly comprises a swing driving mechanism and a rope end fixing mechanism arranged on the upper end of the swing driving mechanism.

[0016] The rope end fixing mechanism is used for fixing the two ends of the steel wire rope, the swing driving mechanism is used for driving the steel wire rope segments above and below the steel wire rope clamping assembly to synchronously reciprocate around the swing circle point, so as to drive the steel wire rope to bend around the swing circle point for fatigue test.

[0017] As a preferred scheme of the present application, the bottom of the step plate and the back plate of the container plate have a redundant space, the swing driving mechanism comprises a swing plate installed in the redundant space, and a first linear hole slot formed at the lower end of the swing plate, the back plate of the container plate is installed with a driving motor, a connecting rod is installed on the driving shaft of the driving motor, and the connecting rod is installed in the first linear hole slot to drive the swing plate to swing around the center point of the steel wire rope;

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

[0019] As a preferred scheme of the present application, the back plate of the container plate is provided with a reinforcing assembly above the driving motor, the reinforcing assembly comprises a joint plate arranged on the back plate of the container plate, and a second linear hole slot arranged at the upper end of the swing plate, a I-shaped clamping plate is installed in the joint plate, and the joint plate and the swing plate are combined together by the I-shaped clamping plate.

[0020] The side surface of the swing plate is in the same plane as the side surface of the step plate, and the side surface of the swing plate is provided with a plurality of fixing members for clamping the steel wire rope.

[0021] As a preferred scheme of the present application, the rope end fixing mechanism comprises a clamping member, and a hanging buckle arranged behind the clamping member, a through hole for passing through the steel wire rope is formed at the center position of the clamping member, the hanging buckle 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 hanging buckle comprises a pneumatic cylinder and a hook arranged on the telescopic shaft of the pneumatic cylinder, the telescopic shaft of the pneumatic cylinder can pass through the through hole at the center position of the clamping member, the hook hooks the rope end of the steel wire rope and pulls the steel wire rope to move into the through hole after the rope end is hooked, and the rope end of the steel wire rope is fixed by the clamping member.

[0023] As a preferred scheme of the present application, the clamping member comprises an outer through sleeve fixedly installed on the swing plate, and an inner rotating block arranged in the inner cavity of the outer through sleeve, the inner rotating block rotates forward and backward under the rotation driving assembly, the center positions of the outer through sleeve and the inner rotating block are provided with a through hole, and the clamping assembly is installed in the sunken groove;

[0024] The side surface of the inner rotating block is provided with a plurality of inner tangent grooves which are uniformly distributed and in an inclined state, a fixed included angle is formed between the outer end of each inner tangent groove and the outer tangent line of the inner rotating block, and the same side surface of the outer through sleeve is provided with a limiting groove, a clamping rod is installed in the limiting groove, and the lower surface of the clamping rod is provided with a clamping seat which is in the inner tangent groove, and the inner rotating block drives the clamping rod to move synchronously inwards and outwards when rotating in the forward and reverse directions.

[0025] As a preferred scheme of the present application, the rotating driving assembly comprises a cylindrical curved surface plate arranged on the other side surface of the inner rotating block, and an oblique tooth groove arranged on the side curved surface of the cylindrical curved surface plate.

[0026] The same side surface of the outer through sleeve is provided with an oblique gear which is engaged with the oblique tooth groove, and the side curved surface of the outer through sleeve is provided with a working motor which is connected with the oblique gear.

[0027] The working motor drives the oblique gear to engage with the oblique tooth groove, so as to drive the inner rotating block to rotate in the forward and reverse directions, and the inner rotating block drives the clamping rod to move inwards and outwards when rotating in the forward and reverse directions, so as to clamp and fix the steel wire rope in the through hole or release the steel wire rope.

[0028] In addition, the present application also provides a method for testing the bending fatigue degree of the steel wire rope of the intelligent vehicle drum, which comprises the following steps:

[0029] The steel wire rope clamping assembly is used to resist the center point of the fixed steel wire rope, and the surface of the steel wire rope is always exposed to the shooting assembly, and the steel wire rope is divided into an upper segment and a lower segment at the installation position of the steel wire rope clamping assembly;

[0030] The end of the steel wire rope is fixed, and the steel wire rope is taut to a proper tension;

[0031] The upper segment and the lower segment of the steel wire rope are driven to reciprocatingly bend and swing around the center position, and the center point image of the steel wire rope is shot at the same time;

[0032] Based on the comparison result of the center point image of the steel wire rope, whether the state of the steel wire rope changes is observed, so as to test the bending fatigue degree of the steel wire rope.

[0033] Compared with the prior art, the present application has the following beneficial effects:

[0034] When the bending fatigue degree of the steel wire rope is measured, the center point of the steel wire rope is always kept unchanged, so when the center point image of the steel wire rope is shot by the shooting assembly, the image will not have the problem of residual image due to the swinging of the steel wire rope, the image state is stable, and the image change of the center point of the steel wire rope can be quickly and accurately recognized. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0036] Figure 1 A top view of a bending fatigue testing device according to an embodiment of the present application;

[0037] Figure 2 A left bending structure of a steel wire rope according to an embodiment of the present application;

[0038] Figure 3 A right bending structure of a steel wire rope according to an embodiment of the present application;

[0039] Figure 4 A whole structure of a steel wire rope clamping assembly according to an embodiment of the present application;

[0040] Figure 5 A structure of a steel wire rope bending driving assembly according to an embodiment of the present application;

[0041] Figure 6 A whole structure of a rope end fixing mechanism according to an embodiment of the present application;

[0042] Figure 7 A bottom structure of a clamping piece according to an embodiment of the present application;

[0043] Figure 8 A structure of a clamping piece in a released state according to an embodiment of the present application;

[0044] Figure 9 A structure of a clamping piece in a clamped state according to an embodiment of the present application.

[0045] The reference signs in the drawings represent the following respectively:

[0046] 1 - pallet; 2 - steel wire rope clamping assembly; 3 - shooting assembly; 4 - steel wire rope bending driving assembly; 6 - clamping piece; 7 - hanging buckle;

[0047] 21 - lifting driving assembly; 22 - step plate; 23 - cutting groove;

[0048] 211 - lifting plate; 212 - through hole groove; 213 - servo motor; 214 - screw shaft sleeve; 215 - cambered extrusion plate; 216 - compression spring;

[0049] 41 - swinging driving mechanism; 42 - rope end fixing mechanism;

[0050] 411-oscillating plate; 412-first linear hole groove; 413-driving motor; 414-connecting rod; 415-plate with equal seam; 416-second linear hole groove; 417-I-shaped clamping plate;

[0051] 61-outer through sleeve; 62-inner rotating block; 63-perforation; 64-inner cutting groove; 65-limiting groove; 66-clamping rod; 67-clamping seat; 68-rotary driving assembly;

[0052] 681-cylindrical curved surface plate; 682-oblique tooth groove; 683-oblique gear; 684-servo motor.

[0053] 71-pneumatic cylinder; 72-hook. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

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

[0056] The center point of the steel wire rope is clamped by a steel wire rope clamping assembly, and the surface of the steel wire rope is always exposed to the shooting assembly, and the steel wire rope is divided into an upper segment and a lower segment at the installation position of the steel wire rope clamping assembly;

[0057] The end of the steel wire rope is fixed, and the steel wire rope is tightened to a proper tension;

[0058] The upper segment and the lower segment of the steel wire rope are simultaneously reciprocatingly bent and swung around the center position, and the image of the center point of the steel wire rope is simultaneously shot;

[0059] Based on the comparison result of the image of the center point of the steel wire rope, whether the state of the steel wire rope changes is observed to test the bending fatigue degree of the steel wire rope.

[0060] The center point of the steel wire rope always remains unchanged, so when the image of the center point of the steel wire rope is shot by the shooting assembly, the image will not have the problem of ghosting due to the swinging of the steel wire rope, and the state of the shot image is stable, so that the image change of the center point of the steel wire rope can be quickly and accurately identified.

[0061] The present embodiment also provides a device for testing the bending fatigue degree of a steel wire rope of an intelligent vehicle drum, as shown in Figures 1 to 3As shown, it comprises: a loading plate 1, a steel wire rope clamping assembly 2 arranged on the loading plate 1, and a shooting assembly 3 arranged on opposite sides of the loading plate 1, the steel wire rope clamping assembly 2 is used to resist the center point of the steel wire rope, so that the center point of the steel wire rope remains unchanged.

[0062] The back plate of the loading plate 1 is provided with a steel wire rope bending driving assembly 4 above and below the steel wire rope clamping assembly 2, the steel wire rope bending driving assembly 4 is used to fix the upper and lower ends of the steel wire rope, and drive the upper and lower ends of the steel wire rope to swing around the center point of the steel wire rope, and the shooting assembly 3 is used to shoot the image of the center point of the steel wire rope when the upper and lower ends of the steel wire rope swing around the center point of the steel wire rope.

[0063] The shooting assembly 3 is connected with a processing system, which tests the bending fatigue degree of the steel wire rope based on the image change of the center point of the steel wire rope.

[0064] The steel wire rope bending fatigue test provided by the embodiment is specific: the center point of the steel wire rope is fixed, the two ends of the steel wire rope are driven to reciprocatingly swing around the center point of the steel wire rope, the image of the center point of the steel wire rope is shot to identify the state change of the center point of the steel wire rope, the bending fatigue change of the steel wire rope is analyzed based on the state change of the center point of the steel wire rope, when the center point of the steel wire rope starts to crack, it means that the current steel wire rope has bending fatigue, and the bending fatigue degree of the steel wire rope is represented based on the reciprocating swing times corresponding to when the center point of the steel wire rope starts to crack, the greater the reciprocating swing times, the lower the bending fatigue degree, and the less the reciprocating swing times, the higher the bending fatigue degree.

[0065] The center point of the steel wire rope remains unchanged, so when the shooting assembly 3 shoots the image of the center point of the steel wire rope, the image will not have the problem of ghosting due to the swing of the steel wire rope, and the state of the shot image is stable, so that the image change of the center point of the steel wire rope can be quickly and accurately identified.

[0066] Specifically, in order to realize the fixed clamping of the center point of the steel wire rope, the steel wire rope clamping assembly 2 comprises a lifting driving assembly 21 mounted on the back plate of the loading plate 1, and a stepped plate 22 for placing the steel wire rope, the lifting driving assembly 21 clamps and releases the steel wire rope by moving up and down.

[0067] As Figure 4As shown, the lifting driving assembly 21 comprises a lifting plate 211, and a through hole groove 212 penetrating the lifting plate 211, a servo motor 213 is installed on the back plate of the container plate 1, a screw shaft sleeve 214 is installed on the working shaft of the servo motor 213, and the screw shaft sleeve 214 is fixedly installed in the through hole groove 212, a compression spring 216 wrapped outside the working shaft of the servo motor 213 is arranged between the bottom of the lifting plate 211 and the back plate of the container plate 1, an arc extrusion plate 215 is arranged on the side surface upper end of the lifting plate 211, and an arc extrusion plate 215 is also arranged on the opposite side of the end of the step plate 22, and the lifting plate 211 is driven to descend to align the two arc extrusion plates 215 to fix the steel wire rope.

[0068] The side surface of the step plate 22 towards the lifting plate 211 is provided with a cutting groove 24, and the arc extrusion plate 215 on the side surface upper end of the lifting plate 211 is lifted along the cutting groove 24 to clamp and release the steel wire rope.

[0069] The working shaft of the servo motor 213 is provided with the screw shaft sleeve 214, when the servo motor 213 is reversed, the whole lifting plate 211 can be driven to move up and down, when the lifting plate 211 moves down, the arc extrusion plate 215 along the cutting groove 24 descends to clamp and fix the steel wire rope, when the lifting plate 211 moves up, the arc extrusion plate 215 along the cutting groove 24 ascends to release the steel wire rope.

[0070] In the embodiment, after the steel wire rope is placed on the end surface of the step plate 22, the servo motor 213 is driven to rotate forward to drive the whole lifting plate 211 to descend until the center position of the arc extrusion plate 215 on the side of the lifting plate 211 towards the steel wire rope descends to the position of the steel wire rope, and the two arc extrusion plates 215 are aligned to fix the steel wire rope.

[0071] The servo motor 213 is driven to rotate reversely to drive the whole lifting plate 211 to ascend until the center position of the arc extrusion plate 215 on the side of the lifting plate 211 towards the steel wire rope ascends to be separated from the steel wire rope, and the two arc extrusion plates 215 are misaligned to release the steel wire rope.

[0072] After the center point of the steel wire rope is fixed, the upper and lower ends of the steel wire rope are fixed by using the steel wire rope bending driving assembly 4, and the lower and upper sections of the steel wire rope are driven to synchronously reciprocating swing, so that the whole steel wire rope swings around the center point, and the image change of the center point of the steel wire rope is combined to test the bending fatigue degree.

[0073] As shown in the figure, Figure 5 The steel wire rope bending driving assembly 4 comprises a swing driving mechanism 41, and a rope end fixing mechanism 42 arranged on the upper end of the swing driving 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 component 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 component 6 is installed in the sinking groove 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 bevel gear 683 to engage with the bevel tooth groove 682 to drive the inner rotating block 62 to rotate forward and backward, and the inner rotating block 62 drives the clamping rod 66 to move in and out to clamp and fix the steel wire in the through hole 63 or release the steel wire.

[0083] In the embodiment, the clamping rod 66 is installed in the inner cut groove 64 of the inner rotating block 62 through the clamping seat 67 and can move along the inner cut groove 64, so when the servo motor 684 drives the inner rotating block 62 to rotate forward through the engagement of the bevel gear 683 and the bevel tooth groove 682, the clamping rod 66 moves to the through hole 63 under the drive of the inner cut groove 64 to clamp and fix the steel wire in the through hole 63.

[0084] When the servo motor 684 drives the inner rotating block 62 to rotate backward through the engagement of the bevel gear 683 and the bevel tooth groove 682, the clamping rod 66 moves outward under the drive of the inner cut groove 64 to release the steel wire in the through hole 63.

[0085] In the embodiment, when the number of clamping rods 66 is sufficient, multi-point clamping and fixing of the steel wire can be achieved to ensure the clamping stability of the steel wire.

[0086] After the ends of the steel wire are fixed, if it is needed to drive the upper and lower sections of the steel wire to reciprocatingly swing around the center point of the steel wire by the swinging driving mechanism 41, the bending fatigue of the steel wire can be tested.

[0087] The bottom of the step plate 22 and the back plate of the container plate 1 have a redundant space, the swinging driving mechanism 41 includes a swinging plate 411 installed in the redundant space and a first linear hole 412 formed at the lower end of the swinging plate 411, and the back plate of the container plate 1 is installed with a driving motor 413, the driving shaft of the driving motor 413 is installed with a connecting rod 414, and the connecting rod 414 is installed in the first linear hole 412 to drive the swinging plate 411 to swing around the center point of the steel wire.

[0088] The rope end fixing mechanism 42 is installed at the upper end of the swinging plate 411 to fix the two ends of the steel wire.

[0089] When the driving motor 413 rotates and works, the end of the connecting rod 414 moves up and down in the first linear hole 412 to drive the swinging plate 411 to swing around the bottom of the swinging plate 411, that is, to drive the upper and lower sections of the steel wire to swing around the center point.

[0090] Since the bottom of the step plate 22 and the back plate of the container plate 1 have a redundant space, the bottom of the swinging plate 411 is installed on the rod body at the center position of the step plate 22, so when the swinging plate 411 swings, it specifically drives the upper and lower sections of the steel wire to swing around the center point to test the bending fatigue of the steel wire.

[0091] In order to ensure the stability of the swing of the swing plate 411 around the center point of the steel wire rope, the back plate of the container plate 1 is provided with a reinforcing assembly above the driving motor 413, as shown in the figure. Figure 5 The reinforcing assembly includes a joint plate 415 arranged on the back plate of the container plate 1, and a second linear hole groove 416 arranged at the upper end of the swing plate 411, and an I-shaped clamping plate 417 is arranged in the joint plate 415, which combines the joint plate 415 and the swing plate 411.

[0092] The side surface of the swing plate 411 is in 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 members for clamping the steel wire rope.

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

[0094] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. A device for testing the bending fatigue degree of a steel wire rope of a smart vehicle drum, characterized by, The device comprises a loading plate (1), a steel wire rope clamping assembly (2) arranged on the loading plate (1), and a shooting assembly (3) arranged on opposite surfaces of the loading plate (1), wherein the steel wire rope clamping assembly (2) is used to resist the center point of the steel wire rope so that the center point of the steel wire rope remains unchanged. The back plate of the loading plate (1) is provided with a steel wire rope bending driving assembly (4) above and below the steel wire rope clamping assembly (2), the steel wire rope bending driving assembly (4) is used to fix the upper and lower ends of the steel wire rope and drive the upper and lower ends of the steel wire rope to swing around the center point of the steel wire rope, and the shooting assembly (3) is used to shoot the image of the center point of the steel wire rope when the upper and lower ends of the steel wire rope swing around the center point of the steel wire rope. The shooting assembly (3) is connected with a processing system, and the processing system tests the bending fatigue degree of the steel wire rope based on the image change of the center point of the steel wire rope.

2. The device according to claim 1, wherein the steel wire rope clamping assembly (2) comprises a lifting driving assembly (21) mounted on the back plate of the loading plate (1), and a stepped plate (22) used for placing the steel wire rope, and the lifting driving assembly (21) clamps and releases the steel wire rope by moving up and down. The lifting driving assembly (21) comprises a lifting plate (211) and a through hole slot (212) penetrating through the lifting plate (211), a servo motor (213) is mounted on the back plate of the loading plate (1), a lead screw sleeve (214) is mounted on the working shaft of the servo motor (213), and the lead screw sleeve (214) is fixedly installed in the through hole slot (212), an arc extrusion plate (215) is arranged on the side surface upper end of the lifting plate (211) facing the steel wire rope, and the end of the stepped plate (22) is also provided with an arc extrusion plate (215) on the opposite surface of the lifting plate (211), and the lifting plate (211) is driven to descend to the position where the two arc extrusion plates (215) are aligned, so that the steel wire rope is fixed.

3. The device according to claim 2, wherein a compression spring (216) wrapped outside the working shaft of the servo motor (213) is arranged between the bottom of the lifting plate (211) and the back plate of the loading plate (1). A cutting groove (23) is arranged on the side of the stepped plate (22) facing the lifting plate (211), and the arc extrusion plate (215) on the upper end of the side surface of the lifting plate (211) is lifted along the cutting groove (23) to clamp and release the steel wire rope.

4. The device according to claim 3, wherein the steel wire rope bending driving assembly (4) comprises a swing driving mechanism (41) and a rope end fixing mechanism (42) arranged on the upper end of the swing driving mechanism (41). ​ ​ ​ ​ The rope end fixing mechanism (42) is used to fix the two ends of the steel wire rope, and the swing driving mechanism (41) is used to drive the steel wire rope segments above and below the steel wire rope clamping assembly (2) to swing synchronously around the swing point, so as to drive the steel wire rope to bend around the swing point for bending fatigue test.

5. The bending fatigue test device for the steel wire rope of the intelligent vehicle roller according to claim 4, characterized in that, The bottom of the stepped plate (22) and the back plate of the container plate (1) have a redundant space, the swing driving mechanism (41) comprises a swing plate (411) installed in the redundant space, and a first linear hole (412) is formed in the lower end of the swing plate (411), the back plate of the container plate (1) is provided with a driving motor (413), a connecting rod (414) is installed on the driving shaft of the driving motor (413), and the connecting rod (414) is installed in the first linear hole (412) to drive the swing plate (411) to swing around the center point of the steel wire rope; The rope end fixing mechanism (42) is installed on the upper end of the swing plate (411) to fix the two ends of the steel wire rope.

6. The bending fatigue test device for the steel wire rope of the intelligent vehicle roller according to claim 5, characterized in that, The back plate of the container plate (1) is provided with a reinforcing assembly above the driving motor (413), the reinforcing assembly comprises a joint plate (415) arranged on the back plate of the container plate (1), and a second linear hole (416) arranged on the upper end of the swing plate (411), a I-shaped clamping plate (417) is installed in the joint plate (415), and the joint plate (415) and the swing plate (411) are combined together by the I-shaped clamping plate (417); The side surface of the swing plate (411) is in the same plane as the side surface of the stepped plate (22), and the side surface of the swing plate (411) is provided with a plurality of fixing members for clamping the steel wire rope.

7. The bending fatigue test device for the steel wire rope of the intelligent vehicle roller according to claim 5, characterized in that, The rope end fixing mechanism (42) comprises a clamping member (6) and a hanging buckle member (7) arranged behind the clamping member (6), a through hole (63) for passing through the steel wire rope is formed at the center position of the clamping member (6), the hanging buckle member (7) is used to fix the rope end of the steel wire rope and move the rope end of the steel wire rope into the through hole (63); The hanging buckle member (7) comprises a pneumatic cylinder (71) and a hook (72) arranged 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 position of the clamping member (6), the hook (72) hooks the rope end of the steel wire rope and pulls the steel wire rope to move into the through hole (63), and the rope end of the steel wire rope is fixed by the clamping member (6). 8.The device of claim 7, wherein the clamping member (6) comprises an outer through sleeve (61) fixedly installed on the swing plate (411) and an inner rotating block (62) arranged in the inner cavity of the outer through sleeve (61), the inner rotating block (62) rotates in the forward and reverse directions under the rotation driving assembly (68), the outer through sleeve (61) and the inner rotating block (62) are provided with a through hole (63) at the center position, and the clamping assembly (6) is installed in the sinking groove (42). The side surface of the inner rotating block (62) is provided with a plurality of inner tangent grooves (64) which are uniformly distributed and in an inclined state, a fixed clamping angle is formed between the outer end of each inner tangent groove (64) and the outer tangent line of the inner rotating block (62), and the same side surface of the outer through sleeve (61) is provided with a limiting groove (65), the clamping rod (66) is installed in the limiting groove (65), and the lower surface of the clamping rod (66) is provided with a clamping seat (67) in the inner tangent groove (64), and the inner rotating block (62) drives the clamping rod (66) to move synchronously in and out when rotating in the forward and reverse directions. 9.The device of claim 8, wherein the rotation driving assembly (68) comprises a cylindrical curved surface plate (681) arranged on the other side surface of the inner rotating block (62) and an oblique tooth groove (682) arranged on the side curved surface of the cylindrical curved surface plate (681). The same side surface of the outer through sleeve (61) is provided with an oblique gear (683) engaged with the oblique tooth groove (682), and the side curved surface of the outer through sleeve (61) is provided with a working motor (684) connected with the oblique gear (683). The working motor (684) drives the oblique gear (683) to engage with the oblique tooth groove (682) to drive the inner rotating block (62) to rotate in the forward and reverse directions, and the inner rotating block (62) drives the clamping rod (66) to move in and out when rotating in the forward and reverse directions, so as to clamp the steel wire in the through hole (63) or release the steel wire. The device of any one of claims 1-9 comprises the following steps: The steel wire clamping assembly is used to resist the center point of the fixed steel wire, and the surface of the steel wire always faces the shooting assembly, and the steel wire is divided into an upper segment and a lower segment at the installation position of the steel wire clamping assembly; 10. A method of testing the bending fatigue of a steel cord for an intelligent vehicle roller, characterized in that, The end of the steel wire is fixed, and the steel wire is taut to a suitable tension; The upper segment and the lower segment of the steel wire are driven to reciprocatingly bend and swing around the center position at the same time, and the image of the center point of the steel wire is shot at the same time; Based on the comparison result of the image of the center point of the steel wire, whether the state of the steel wire changes is observed to test the bending fatigue degree of the steel wire. ​ ​

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