Deep-sea exploration steel wire rope bending friction fatigue test device and method

Abstract

The invention relates to the technical field of steel wire rope detection, in particular to a deep sea exploration steel wire rope bending friction fatigue test device and method, a steering wheel is located at the upper end of a gap between a long wheel belt and an inner rail, a steel wire rope is attached to the arc outer wall of the steering wheel to smoothly extend, and a detection box is filled with seawater with the liquid level not higher than the lower end face of a cross beam; the long wheel belt and the inner rail are respectively provided with a wire groove, the outer diameter of the wire groove is larger than that of the steel wire rope, and a coral rock simulation layer or a rubber water belt is arranged in the wire groove. Friction is simulated through contact between the steel wire rope and the coral rock, and then bending and friction tests of the steel wire rope in a deep sea environment are simulated through reciprocating traction of the steel wire rope, so that the accuracy of simulation detection is improved, and the use safety of the steel wire rope is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of wire rope detection, and specifically to a bending friction fatigue test device and method for deep-sea exploration wire ropes. Background Technique

[0002] A wire rope is composed of steel wires, a rope core, and lubricating grease. The wire rope is first formed by twisting multiple layers of steel wires into strands, and then, with the rope core as the center, a certain number of strands are twisted into a spiral-shaped rope. In material handling machinery, it is used for lifting, traction, tensioning, and load-bearing. The wire rope has high strength, light self-weight, stable operation, and is not prone to sudden breakage of the whole root, and is reliable in work.

[0003] In the prior art, a wire rope fatigue testing machine is usually used to detect the performance of wire ropes. However, the existing detections all simulate the bending fatigue performance of wire ropes in a normal environment, which cannot meet the usage environment of wire ropes in the deep-sea environment, and cannot detect the friction performance of wire ropes.

[0004] The simulation of wire ropes in the deep-sea environment requires simulating factors such as seawater immersion, water pressure extrusion, and friction with underwater coral rocks. Therefore, the existing testing machines cannot meet the performance detection of wire ropes required for deep-sea exploration. Summary of the Invention

[0005] The purpose of the present invention is to provide a bending friction fatigue test device and method for deep-sea exploration wire ropes to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A bending friction fatigue test device for deep-sea exploration wire ropes includes a detection box. A cross beam is horizontally arranged at the upper end port of the detection box, and an upper frame is arranged on the cross beam. A side frame elastically connecting one end of the wire rope is arranged on one side of the detection box. A driving component for reciprocally pulling the other end of the wire rope is arranged on the upper frame. A pair of inner rails are symmetrically arranged on the lower inner wall of the detection box. A turning wheel fixedly installed through a mounting frame is vertically arranged in the middle of the lower end of the cross beam. An image collector is arranged on the mounting frame facing the upper arc outer wall of the turning wheel. On both sides of the turning wheel on the cross beam, long wheel belts whose height can be adjusted through an adjusting component are symmetrically arranged. The lower end of the long wheel belt faces the inner rail. The middle section of the wire rope extends into the interior of the detection box, and the wire rope extends through the gap between the long wheel belt and the inner rail. The turning wheel is located at the upper end of the gap between the long wheel belt and the inner rail, and the wire rope smoothly extends along the arc outer wall of the turning wheel in a fitting manner. Seawater with a liquid level not higher than the lower end face of the cross beam is filled in the detection box. Groove lines with an outer diameter larger than that of the wire rope are arranged on both the long wheel belt and the inner rail. A coral rock simulation layer or a rubber water belt is arranged in the groove line.

[0008] Preferably, the steel wire rope reciprocates on the detection box through a roller assembly. Both ends of the steel wire rope are fixedly tied to the end clamping assembly. A first spring is sleeved on one end of the steel wire rope close to the side frame. The first spring is pressed between the end clamping assembly and the side frame. The roller assembly includes a first guide wheel on both sides of the upper end port of the detection box, a pair of fourth guide wheels facing the inner rail, a third guide wheel on the outer wall of the detection box away from the side frame, and a second guide wheel on the upper frame. The middle section of the steel wire rope smoothly enters and extends out of the inner cavity of the detection box through a pair of symmetrically distributed first guide wheels. The steel wire rope extends parallel to the gap between the long wheel belt and the inner rail through a pair of fourth guide wheels. The steel wire rope extends to the drive assembly through the second guide wheel and the third guide wheel.

[0009] Preferably, the drive assembly includes a rotating arm, a swinging arm, and a turntable. A connecting rod is arranged on the upper frame. One end of the rotating arm is provided with a collar rotatably sleeved on the connecting rod. The other end of the rotating arm is provided with a snap ring connected to the end of the steel wire rope. An ear seat is arranged at the lower end of the rotating arm close to the snap ring. The upper end of the swinging arm is rotatably installed on the ear seat. A turntable driven by a motor is arranged on the upper frame. A sleeve column is vertically arranged on the front end face of the turntable. The lower end of the swinging arm is sleeved on the sleeve column.

[0010] Preferably, the end clamping assembly includes a pair of semi-cylindrical clamping plates symmetrically distributed. The end of the steel wire rope is clamped between the pair of semi-cylindrical clamping plates. The pair of semi-cylindrical clamping plates are fastened by bolts. A screw tube cooperatively sleeved with the snap ring is arranged at the upper end of the end clamping assembly. A locking nut pressed on the snap ring is rotatably threaded on the screw tube.

[0011] Preferably, the adjusting assembly includes a three-channel inner cavity, an upper piston rod, and a lower piston rod. The long wheel belt is installed on the outer frame. A pair of gears are rotatably installed at both ends of the outer frame through bearings. Tooth grooves meshing with the gears are arranged on the inner side of the long wheel belt. The lower piston rod is vertically connected to the upper end of the outer frame. A pair of three-channel inner cavities are arranged on the cross beam. The upper end of the lower piston rod is slidably inserted into the lower port of the three-channel inner cavity in a piston manner. The upper piston rod is slidably inserted into the upper port of the three-channel inner cavity. Extension frames corresponding to the upper and lower ports of the three-channel inner cavity are arranged on the cross beam. Retaining rings are fixed on the outer walls of the upper piston rod and the lower piston rod. Second springs are sleeved on the upper piston rod and the lower piston rod. The second springs are pressed between the retaining rings and the extension frames. The outer diameter of the retaining ring is larger than the inner diameter of the upper and lower ports of the three-channel inner cavity. A pressure gauge connected to the upper piston rod is arranged on the extension frame at the upper end of the cross beam. The middle port of the three-channel inner cavity extends to the cross beam and is connected to a control valve of an external air pump at the port.

[0012] A method implemented according to the deep-sea exploration steel wire rope bending friction fatigue test device, the method includes the following steps:

[0013] First, one end of the steel wire rope is elastically installed on the side frame, the other end of the steel wire rope is connected to the driving assembly, the middle section of the steel wire rope extends into the detection box and passes through the gap between the long wheel belt and the inner rail. Coral rock simulation layers and rubber water hoses are respectively placed in the wire grooves of the two long wheel belts, and the height of the long wheel belt is adjusted so that it presses downward and presses the steel wire rope into the inner rail. The driving device reciprocally pulls the steel wire rope, and the image collector is used to collect the state of the steel wire rope in real time.

[0014] Preferably, when the driving assembly reciprocally pulls one end of the steel wire rope, the middle section of the steel wire rope smoothly bends and moves under the limitation of the roller skating assembly, and the other end of the steel wire rope makes a telescopic movement under the action of the first spring.

[0015] Preferably, when it is necessary to reciprocally pull the steel wire rope, the motor drives the turntable to rotate, and then one end of the swing arm is driven to swing up and down eccentrically with the turntable, synchronously driving the swing arm to rotate up and down, thereby pulling one end of the steel wire rope to reciprocally move up and down.

[0016] Preferably, before the test, both ends of the steel wire rope are tied to the end clamping assembly, and the mutual clamping force of the symmetrically distributed semi-cylindrical clamping plates is used to stably clamp the end of the steel wire rope to prevent it from falling off.

[0017] Preferably, the upper piston rod and the lower piston rod are supported by the extension frame and the second spring, and the internal pressure of the three-flow channel cavity is adjusted by the control valve of the external air pump, so that under the action of the internal pressure, the extension lengths of the upper piston rod and the lower piston rod are driven, and then the height of the long wheel belt is adjusted to achieve the effect of controlling the pressure on the steel wire rope. The mutual action between the upper piston rod and the pressure gauge is used to judge the internal pressure value of the three-flow channel cavity, which is convenient for data collection.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] By setting the detection box to simulate the working state of seawater immersion, using the long wheel belt with adjustable height to simulate the water pressure extrusion on the steel wire rope, and setting the contact between the steel wire rope and the coral rock to simulate friction, and then through the reciprocal pulling of the steel wire rope, the test of simulating the bending and friction of the steel wire rope in the deep-sea environment is achieved, improving the accuracy of the simulation detection and ensuring the safety of the use of the steel wire rope. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the simulation detection of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the lifting adjustment and installation of the upper and lower piston rods of the present invention;

[0022] Figure 3 It is a three-dimensional structural diagram of the driving assembly of the present invention;

[0023] Figure 4 Schematic three-dimensional structure diagram of the connection between the swing arm and the end clamping assembly of the present invention;

[0024] Figure 5 Schematic three-dimensional structure diagram of the connection between the equipment and the swing arm of the present invention;

[0025] Figure 6 Schematic three-dimensional structure diagram of the swing arm of the present invention;

[0026] Figure 7 Schematic three-dimensional structure diagram of the installation of the long wheel belt of the present invention;

[0027] Figure 8 Schematic three-dimensional structure diagram of the steering wheel of the present invention.

[0028] In the figure: 1, detection box; 2, upper frame; 3, side frame; 4, inner rail; 5, cross beam; 6, first guide wheel; 7, connecting rod; 8, steel wire rope; 9, second guide wheel; 10, third guide wheel; 11, fourth guide wheel; 12, long wheel belt; 13, end clamping assembly; 14, first spring; 15, control valve; 16, outer frame; 17, steering wheel; 18, swing arm; 19, swing arm; 20, snap ring; 21, turntable; 22, ear seat; 23, collar; 24, sleeve column; 25, locking nut; 26, screw pipe; 27, three-way channel inner cavity; 28, extension frame; 29, lower piston rod; 30, upper piston rod; 31, pressure gauge; 32, second spring; 33, retaining ring; 34, image collector; 35, wire groove; 36, tooth groove; 37, gear; 38, mounting frame. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 to 8 , the present invention provides a technical solution:

[0031] Embodiment 1: A deep-sea exploration steel wire rope bending friction fatigue test device, including a detection box 1, a cross beam 5 is horizontally arranged at the upper end port of the detection box 1, an upper frame 2 is arranged on the cross beam 5, a side frame 3 elastically connecting one end of the steel wire rope 8 is arranged on one side of the detection box 1, the steel wire rope 8 reciprocates on the detection box 1 through a roller skating assembly, both ends of the steel wire rope 8 are fixedly tied to the end clamping assembly 13, and a first spring 14 is sleeved on one end of the steel wire rope 8 close to the side frame 3, and the first spring 14 is pressed between the end clamping assembly 13 and the side frame 3.

[0032] By setting the side frame 3 and the end clamping assembly 13, one end of the wire rope 8 is installed on the side frame 3, and cooperates with the first spring 14 to achieve its elastic installation, and then under the traction of the driving assembly, the elastic expansion and contraction of the end of the wire rope 8 is achieved.

[0033] A driving assembly for the other end of the reciprocating traction wire rope 8 is provided on the upper frame 2, and the driving assembly includes a rotating arm 18, a swing arm 19 and a turntable 21. A connecting rod 7 is provided on the upper frame 2. A ring 23 rotatably sleeved on the connecting rod 7 is provided at one end of the rotating arm 18, and a clamping ring 20 connected to the end of the wire rope 8 is provided at the other end of the rotating arm 18. An ear seat 22 is provided at the lower end of the rotating arm 18 close to one end of the clamping ring 20, and the upper end of the swing arm 19 is rotatably mounted on the ear seat 22. A turntable 21 driven by a motor is provided on the upper frame 2, and a sleeve column 24 is vertically provided on the front end surface of the turntable 21, and the lower end of the swing arm 19 is sleeved on the sleeve column 24.

[0034] The motor-driven turntable 21 is provided to drive the swing arm 19 to move up and down, thereby driving the rotating arm 18 to rotate up and down, thereby achieving the purpose of reciprocatingly pulling the end of the wire rope 8.

[0035] A pair of inner rails 4 are symmetrically arranged on the inner wall of the lower end of the detection box 1, and a long wheel belt 12 for realizing height adjustment through an adjusting assembly is symmetrically arranged on both sides of the crossbeam 5 located on the steering wheel 17, the lower end of the long wheel belt 12 is directly opposite to the inner rail 4, the middle section of the wire rope 8 extends to the interior of the detection box 1, and the wire rope 8 extends through the gap between the long wheel belt 12 and the inner rail 4, the steering wheel 17 is located at the upper end of the gap between the long wheel belt 12 and the inner rail 4, the wheel pulley assembly includes a first guide wheel 6 located on both sides of the upper end port of the detection box 1, a pair of fourth guide wheels 11 located directly opposite to the inner rail 4, a third guide wheel 10 located on the outer wall of the detection box 1 away from the side frame 3, and a second guide wheel 9 located on the upper frame 2, the middle section of the wire rope 8 smoothly enters and extends out of the inner cavity of the detection box 1 through a pair of symmetrically distributed first guide wheels 6, the wire rope 8 extends parallel to the gap between the long wheel belt 12 and the inner rail 4 through a pair of fourth guide wheels 11, and the wire rope 8 extends to the drive assembly through the second guide wheel 9 and the third guide wheel 10.

[0036] The first guide wheel 6 enables the steel wire rope 8 to smoothly enter and exit the inner cavity of the detection box 1 , and the fourth guide wheel 11 enables the steel wire rope 8 to extend parallel to the gap between the long wheel belt 12 and the inner rail 4 .

[0037] A steering wheel 17 is vertically arranged in the middle of the lower end of the crossbeam 5 and fixedly installed by a mounting frame 38. An image collector 34 facing the arc outer wall of the upper end of the steering wheel 17 is arranged on the mounting frame 38, and the wire rope 8 smoothly extends along the arc outer wall of the steering wheel 17.

[0038] By setting the steering wheel 17, it is convenient to collect images of the steel wire rope 8, and the state of the steel wire rope 8 after the action of the two-side long wheel belts 12 can be collected synchronously.

[0039] The detection box 1 is filled with seawater whose liquid level is not higher than the lower end face of the cross beam 5. The long wheel belts 12 and the inner rail 4 are both provided with wire grooves 35 whose outer diameter is larger than that of the steel wire rope 8. A coral rock simulation layer or a rubber water belt is arranged in the wire groove 35.

[0040] By setting the wire groove 35, the extension direction of the steel wire rope 8 is limited to prevent deviation. By filling seawater, the environment of seawater immersion in deep-sea exploration is simulated. The water pressure received by the steel wire rope 8 in the deep-sea environment is utilized by the rubber water belt and the long wheel belt 12. The rubber water belt is a hollow water belt made of rubber and adapted to the contour of the wire groove 35, and the rubber water belt is filled with seawater. The steel wire rope 8 is extruded by the cooperation of the coral rock simulation layer and the long wheel belt 12, so that the reciprocating steel wire rope 8 simulates the state of being rubbed underwater.

[0041] Working principle: Before the test, one end of the steel wire rope 8 is elastically installed on the side frame 3 first, the other end of the steel wire rope 8 is connected to the driving component, the middle section of the steel wire rope 8 extends into the detection box 1 and passes through the gap between the long wheel belt 12 and the inner rail 4. A coral rock simulation layer and a rubber water belt are respectively placed in the wire grooves 35 of the two-side long wheel belts 12, and the height of the long wheel belt 12 is adjusted so that it presses downward and presses the steel wire rope 8 into the inner rail 4. By filling seawater, the environment of seawater immersion in deep-sea exploration is simulated. The water pressure received by the steel wire rope 8 in the deep-sea environment is utilized by the rubber water belt and the long wheel belt 12. The rubber water belt is a hollow water belt made of rubber and adapted to the contour of the wire groove 35, and the rubber water belt is filled with seawater. The steel wire rope 8 is extruded by the cooperation of the coral rock simulation layer and the long wheel belt 12, so that the reciprocating steel wire rope 8 simulates the state of being rubbed underwater. The driving device reciprocally pulls the steel wire rope 8, and the state of the steel wire rope 8 is collected in real time by the image collector 34, and the detected data is recorded.

[0042] Embodiment 2: On the basis of Embodiment 1, the end clamping component 13 includes a pair of semi-cylindrical clamping plates symmetrically distributed. The end of the steel wire rope 8 is clamped between the pair of semi-cylindrical clamping plates, and the pair of semi-cylindrical clamping plates are fastened by bolts. A screw tube 26 that is cooperatively sleeved with the snap ring 20 is arranged at the upper end of the end clamping component 13, and a locking nut 25 that is pressed on the snap ring 20 is threadedly rotated on the screw tube 26.

[0043] By setting the end clamping component 13, stable support and limitation for the end of the steel wire rope 8 are realized.

[0044] The adjusting component includes a three-channel inner cavity 27, an upper piston rod 30 and a lower piston rod 29. The long belt 12 is installed on the outer frame 16. At both ends of the outer frame 16, a pair of gears 37 are rotatably installed by bearings. On the inner side of the long belt 12, there is a tooth groove 36 meshing with the gear 37. Vertically connected to the upper end of the outer frame 16 is the lower piston rod 29. On the cross beam 5, there are a pair of three-channel inner cavities 27. The upper end piston of the lower piston rod 29 is slidably inserted into the lower port of the three-channel inner cavity 27. The upper piston rod 30 is slidably inserted into the upper port of the three-channel inner cavity 27. On the cross beam 5, there is an extension frame 28 corresponding to the upper and lower ports of the three-channel inner cavity 27. On the outer walls of the upper piston rod 30 and the lower piston rod 29, retaining rings 33 are fixed. On the upper piston rod 30 and the lower piston rod 29, a second spring 32 is sleeved. The second spring 32 is pressed between the retaining ring 33 and the extension frame 28. The outer diameter of the retaining ring 33 is greater than the inner diameter of the upper and lower ports of the three-channel inner cavity 27. On the extension frame 28 at the upper end of the cross beam 5, there is a pressure gauge 31 connected to the upper piston rod 30. The middle port of the three-channel inner cavity 27 extends to the cross beam 5, and the port is connected to a control valve 15 of an external air pump.

[0045] By setting the control valve 15 of the external air pump, the internal pressure of the three-channel inner cavity 27 is adjusted, so as to drive the upper piston rod 30 and the lower piston rod 29 to extrude outward. As the lower piston rod 29 extends, the pressure of the long belt 12 on the steel wire rope 8 is adjusted. By setting the extrusion of the upper piston cross bar 30 on the pressure gauge 30, the internal pressure of the three-channel inner cavity 27 is reflected, which is convenient for data acquisition.

[0046] A method implemented according to a deep-sea exploration steel wire rope bending friction fatigue test device, the method includes the following steps:

[0047] First, one end of the steel wire rope 8 is elastically installed on the side frame 3. The other end of the steel wire rope 8 is connected to the driving component. The middle section of the steel wire rope 8 extends into the detection box 1 and passes through the gap between the long belt 12 and the inner rail 4. Coral rock simulation layers and rubber water belts are respectively placed in the wire grooves 35 of the two long belts 12. The height of the long belt 12 is adjusted so that it presses downward and presses the steel wire rope 8 into the inner rail 4. The driving device reciprocally pulls the steel wire rope 8, and the image collector 34 is used to collect the state of the steel wire rope 8 in real time.

[0048] When the driving assembly reciprocates and pulls one end of the wire rope 8, the middle section of the wire rope 8 is smoothly bent and moved under the limit of the roller skate assembly, and the other end of the wire rope 8 performs telescopic movement under the action of the first spring 4; when the wire rope 8 needs to be reciprocated and pulled, the turntable 22 is driven to rotate by the motor, and then one end of the traction swing arm 19 swings up and down eccentrically with the turntable 22, synchronously driving the rotating arm 18 to rotate up and down, so that one end of the traction wire rope 8 reciprocates and moves up and down; before the test, the two ends of the wire rope 8 are tied to the end clamping assembly 13, and the symmetrically distributed semi-cylindrical clamps are used to form a relative rotation. The mutual clamping force realizes stable clamping of the end of the wire rope 8 to prevent it from falling off; the upper piston rod 30 and the lower piston rod 29 are supported by the extension frame 28 and the second spring 32, and the internal pressure of the three-channel inner cavity 27 is adjusted by the control valve 15 of the external air pump, so that the upper piston rod 30 and the lower piston rod 29 are driven to extend their lengths under the action of the internal pressure, thereby realizing the adjustment of the height of the long wheel belt 12, so as to control the pressure on the wire rope 8, and the interaction between the upper piston rod 30 and the pressure gauge 31 is used to judge the internal pressure value of the three-channel inner cavity 27, which is convenient for data collection.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep-sea exploration wire rope bending friction fatigue test device, comprising a test box (1), a crossbeam (5) is transversely arranged at the upper end of the test box (1), an upper frame (2) is arranged on the crossbeam (5), a side frame (3) elastically connected to one end of the wire rope (8) is arranged on one side of the test box (1), and a driving component for reciprocatingly pulling the other end of the wire rope (8) is arranged on the upper frame (2), characterized in that: A pair of inner rails (4) are symmetrically arranged on the inner wall of the lower end of the detection box (1); a steering wheel (17) fixedly mounted by a mounting frame (38) is vertically arranged in the middle of the lower end of the crossbeam (5); an image collector (34) facing the arc outer wall of the upper end of the steering wheel (17) is arranged on the mounting frame (38); long wheel belts (12) that can be adjusted in height by adjusting components are symmetrically arranged on both sides of the crossbeam (5) on the steering wheel (17); the lower end of the long wheel belt (12) faces the inner rail (4); the middle section of the steel wire rope (8) extends to the detection box (11); The detection box (1) is provided with a wire rope (8) extending through the gap between the long wheel belt (12) and the inner rail (4), the steering wheel (17) is located at the upper end of the gap between the long wheel belt (12) and the inner rail (4), and the wire rope (8) smoothly extends in accordance with the arc outer wall of the steering wheel (17), the detection box (1) is filled with seawater with a liquid level not higher than the lower end surface of the cross beam (5), the long wheel belt (12) and the inner rail (4) are both provided with a wire groove (35) with an outer diameter greater than that of the wire rope (8), and a coral rock simulation layer or a rubber water hose is provided in the wire groove (35).

2. A deep sea exploration wire rope bending friction fatigue test device according to claim 1, characterized in that: The steel wire rope (8) reciprocates on the detection box (1) through the wheel pulley assembly. Both ends of the steel wire rope (8) are fixedly tied to the end clamping assembly (13). The end of the steel wire rope (8) close to the side frame (3) is sleeved with a first spring (14). The first spring (14) is pressed between the end clamping assembly (13) and the side frame (3). The wheel pulley assembly includes a first guide wheel (6) located on both sides of the upper end port of the detection box (1), a pair of fourth guide wheels (11) located opposite to the inner rail (4), and a first spring (14) located at the end of the steel wire rope (8) close to the side frame (3). A third guide wheel (10) is provided on the outer wall of the detection box (1) away from the side frame (3) and a second guide wheel (9) is provided on the upper frame (2). The middle section of the wire rope (8) smoothly enters and extends out of the inner cavity of the detection box (1) through a pair of symmetrically distributed first guide wheels (6). The wire rope (8) extends parallel to the gap between the long wheel belt (12) and the inner rail (4) through a pair of fourth guide wheels (11). The wire rope (8) extends to the drive assembly through the second guide wheel (9) and the third guide wheel (10).

3. A deep sea exploration wire rope bending friction fatigue test device according to claim 2, characterized in that: The driving assembly comprises a rotating arm (18), a swing arm (19) and a rotating disk (21); a connecting rod (7) is arranged on the upper frame (2); a sleeve (23) rotatably sleeved on the connecting rod (7) is arranged at one end of the rotating arm (18); a clamping ring (20) connected to the end of the wire rope (8) is arranged at the other end of the rotating arm (18); an ear seat (22) is arranged at the lower end of the rotating arm (18) close to one end of the clamping ring (20); the upper end of the swing arm (19) is rotatably mounted on the ear seat (22); a rotating disk (21) driven by a motor is arranged on the upper frame (2); a sleeve column (24) is vertically arranged on the front end surface of the rotating disk (21); and the lower end of the swing arm (19) is sleeved on the sleeve column (24).

4. A deep sea exploration wire rope bending friction fatigue test device according to claim 3, characterized in that: The end clamping assembly (13) comprises a pair of symmetrically distributed semi-cylindrical clamping plates, the end of the wire rope (8) is clamped between the pair of semi-cylindrical clamping plates, and the pair of semi-cylindrical clamping plates are fastened by bolts. The upper end of the end clamping assembly (13) is provided with a screw tube (26) that is sleeved with a clamping ring (20), and a locking nut (25) is threadedly rotated on the screw tube (26) and pressed on the clamping ring (20).

5. The deep sea exploration wire rope bending friction fatigue test device according to claim 1, characterized in that: The regulating assembly comprises a three-channel inner cavity (27), an upper piston rod (30) and a lower piston rod (29); the long wheel belt (12) is mounted on an outer frame (16); a pair of gears (37) are rotatably mounted on bearings at both ends of the outer frame (16); a tooth groove (36) meshing with the gear (37) is arranged on the inner side of the long wheel belt (12); the upper end of the outer frame (16) is vertically connected with the lower piston rod (29); a pair of three-channel inner cavities (27) is arranged on the cross beam (5); the upper end piston of the lower piston rod (29) is slidably inserted in the lower end port of the three-channel inner cavity (27); the upper piston rod (30) is slidably inserted in the upper end port of the three-channel inner cavity (27); the cross beam (5) is provided with a An extension frame (28) is arranged corresponding to the upper and lower ports of the three-channel inner cavity (27); a retaining ring (33) is fixed on the outer wall of the upper piston rod (30) and the lower piston rod (29); a second spring (32) is sleeved on the upper piston rod (30) and the lower piston rod (29); the second spring (32) is pressed between the retaining ring (33) and the extension frame (28); the outer diameter of the retaining ring (33) is larger than the inner diameter of the upper and lower ports of the three-channel inner cavity (27); a pressure gauge (31) connected to the upper piston rod (30) is arranged on the extension frame (28) at the upper end of the crossbeam (5); the middle port of the three-channel inner cavity (27) extends to the crossbeam (5), and the port is connected to a control valve (15) of an external air pump.

6. A method implemented according to the deep-sea exploration wire rope bending friction fatigue test device according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: First, one end of the steel wire rope (8) is elastically mounted on the side frame (3), and the other end of the steel wire rope (8) is connected to the driving assembly. The middle section of the steel wire rope (8) extends into the detection box (1) and passes through the gap between the long wheel belt (12) and the inner rail (4). A coral rock simulation layer and a rubber water hose are placed in the wire grooves (35) of the long wheel belts (12) on both sides, respectively. The height of the long wheel belt (12) is adjusted so that it squeezes downward and presses the steel wire rope (8) into the inner rail (4). The driving device reciprocates to pull the steel wire rope (8), and uses an image collector (34) to collect the state of the steel wire rope (8) in real time.

7. A deep sea exploration wire rope bending friction fatigue test method according to claim 6, characterized in that: When the driving assembly reciprocates to pull one end of the steel wire rope (8), the middle section of the steel wire rope (8) is smoothly bent and moved under the limit of the wheel pulley assembly, and the other end of the steel wire rope (8) performs telescopic movement under the action of the first spring (4).

8. A deep sea exploration wire rope bending friction fatigue test method according to claim 6, characterized in that: When the steel wire rope (8) needs to be pulled back and forth, the motor drives the turntable (22) to rotate, and then one end of the traction swing arm (19) swings up and down eccentrically with the turntable (22), synchronously driving the rotating arm (18) to rotate up and down, so that one end of the traction steel wire rope (8) moves back and forth up and down.

9. A deep-sea exploration wire rope bending friction fatigue test method according to claim 6, characterized in that: Before the test, the two ends of the steel wire rope (8) are tied to the end clamping assembly (13), and the mutual clamping force of the symmetrically distributed semi-cylindrical clamping plates is used to stably clamp the ends of the steel wire rope (8) to prevent them from falling off.

10. A deep sea exploration wire rope bending friction fatigue test method according to claim 6, characterized in that: The upper piston rod (30) and the lower piston rod (29) are supported by an extension frame (28) and a second spring (32), and the internal pressure of the three-channel inner cavity (27) is adjusted by a control valve (15) of an external air pump, so that the upper piston rod (30) and the lower piston rod (29) are driven to extend their lengths under the action of the internal pressure, thereby adjusting the height of the long wheel belt (12) to control the pressure of the wire rope (8). The interaction between the upper piston rod (30) and the pressure gauge (31) is used to determine the internal pressure value of the three-channel inner cavity (27), thereby facilitating data collection.

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