On-line detection device for steel wire rope of follow-up offshore oil platform drilling and workover rig

Abstract

The invention belongs to the technical field of steel wire rope detection, and discloses a follow-up offshore oil platform drilling and repairing machine steel wire rope online detection device capable of improving the accuracy and reliability of a steel wire rope detection result. Comprising a follow-up rack which comprises a fixed base connected with a fixed foundation, a longitudinal sliding assembly connected with the fixed base and a transverse sliding assembly connected with the longitudinal sliding assembly in a sliding mode; the force transmission device is connected with the transverse sliding assembly and used for enabling the steel wire rope to penetrate through the force transmission device in a contact mode and move in the force transmission device so as to transmit external force generated when the steel wire rope swings in the lifting or pulling-down process to the transverse sliding assembly. And the detection device is fixed on the force transmission device and is used for carding and detecting damage magnetic signals on the steel wire rope. External force generated by left-right swinging of the steel wire rope drives the force transmission device to move left and right on the transverse sliding assembly, external force generated by front-back swinging of the steel wire rope is transmitted to the force transmission device, and the force transmission device drives the transverse sliding assembly to move front and back on the longitudinal sliding assembly.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire rope detection, and in particular to an online steel wire rope detection device for a follow-up offshore oil platform drilling and repair machine. Background Art

[0002] Wire rope plays a vital role in the drilling and repair operations of offshore oil platforms. It is an important auxiliary tool for lifting, hoisting and handling operations. It is responsible for carrying the sky hook, derrick, pulley and other important accessories of the drilling rig, as well as for key tasks such as lifting and lowering the drill pipe and transporting drilling fluid. However, wire rope is also prone to failure, such as "twisting" and "rope collapse". These failures will not only increase wear and tear, increase the safety risks of lifting operations, but may also cause equipment damage and production losses.

[0003] In order to ensure the safe use of wire ropes, in addition to the need for corresponding maintenance and care of the wire ropes, including inspection of external damage to the wire ropes, sheath wear, cleaning of the wire ropes, lubrication and anti-corrosion work, etc., it is also necessary to use wire rope testing equipment to regularly perform flaw detection on the wire ropes.

[0004] However, the existing wire rope detection equipment generally has the following defects during use: during drilling and servicing operations, since the wire rope between the drum and the overhead crane is relatively long, generally almost equal to the height of the derrick, when the drum rotates at high speed to reel in the rope, the wire rope will shake violently under the combined influence of its own gravity, the traction of the drum and other factors (such as wind force). At the same time, since the running speed of the drilling and servicing wire rope is sometimes relatively high, it will move or shake significantly during the movement, causing the position between the wire rope and the wire rope detection equipment to continuously shift and change, thereby reducing the accuracy and reliability of the detection results. In addition, the wire rope and the wire rope detection equipment are prone to collision, causing the wire rope detection equipment to be easily damaged, thereby shortening the service life of the wire rope detection equipment. Summary of the invention

[0005] In order to improve the accuracy and reliability of the wire rope detection result and to increase the service life of the wire rope detection device, the present invention proposes a follow-up type offshore oil platform drilling and repair machine wire rope online detection device.

[0006] According to the present invention, the follow-up type offshore oil platform drilling and repair machine wire rope online detection device comprises: a follow-up type frame fixed on a fixed foundation, the follow-up type frame comprises a fixed base fixedly connected to the fixed foundation, a longitudinal sliding assembly connected to the fixed base, and a transverse sliding assembly slidably connected to the longitudinal sliding assembly; a force transmission device connected to the transverse sliding assembly, the force transmission device is used to enable the wire rope to pass through its interior in a contact manner and to be able to be lifted or pulled down inside it, so as to transmit the external force generated when the wire rope swings during the lifting or pulling process to the transverse sliding assembly; and a detection device fixed on the force transmission device, the detection device is used to comb and detect the damaged magnetic signal on the wire rope. Among them, the external force generated by the left and right swing of the wire rope drives the force transmission device to move left and right on the transverse sliding assembly, and at the same time, the external force generated by the forward and backward swing of the wire rope is transmitted to the force transmission device, so that the force transmission device drives the transverse sliding assembly to move forward and backward on the longitudinal sliding assembly.

[0007] Furthermore, the longitudinal sliding assembly includes a longitudinal fixing frame fixedly connected to the fixed base, a longitudinal sliding rod fixed on the longitudinal fixing frame, and a longitudinal sliding block slidably connected to the longitudinal sliding rod, and the transverse sliding assembly is connected to the longitudinal sliding block.

[0008] Furthermore, the transverse sliding assembly includes a transverse fixing frame connected to the longitudinal sliding block, a transverse sliding rod fixed on the transverse fixing frame, and a transverse sliding block slidably connected to the transverse sliding rod, and the transverse sliding block is connected to the force transmission device.

[0009] Furthermore, a strip through hole is formed on the transverse fixing frame, and the length direction of the strip through hole is parallel to the sliding direction of the transverse fixing frame. The transverse sliding rod passes through the strip through hole and is adjusted to an appropriate position along its length direction and then connected to the transverse fixing frame through a fixing piece.

[0010] Furthermore, the force transmission device includes a force transmission bracket, a first force transmission wheel group and a second force transmission wheel group connected at intervals in the length direction of the force transmission bracket, the wire rope is simultaneously passed through the first force transmission wheel group and the second force transmission wheel group in a contacting manner, and the detection device is fixed on the force transmission bracket in an area between the first force transmission wheel group and the second force transmission wheel group, wherein the structure of the first force transmission wheel group is the same as that of the second force transmission wheel group, the first force transmission wheel group includes a first limiting wheel, a second limiting wheel and a third limiting wheel that are simultaneously rotatably connected to the force transmission bracket, the first limiting wheel and the second limiting wheel are arranged along the length direction of the force transmission bracket, and the third limiting wheel is arranged on the outer side between the first limiting wheel and the second limiting wheel to form a passing channel for the wire rope to pass through in a contacting manner between the first limiting wheel, the second limiting wheel and the third limiting wheel.

[0011] Furthermore, the outer circumferences of the first limiting wheel, the second limiting wheel and the third limiting wheel are all provided with annular grooves, and the steel wire ropes are passed through the annular grooves.

[0012] Furthermore, the force transmission device also includes a third force transmission wheel group connected to the force transmission bracket and located in the area between the first force transmission wheel group and the second force transmission wheel group, and the detection device is located between the first force transmission wheel group and the third force transmission wheel group and between the second force transmission wheel group and the third force transmission wheel group, wherein the third force transmission wheel group includes a fourth limiting wheel and a fifth limiting wheel rotatably connected to the force transmission bracket, the fourth limiting wheel is colinear with the first limiting wheel and the second limiting wheel, and the fifth limiting wheel is arranged on the outside of the fourth limiting wheel to form a passage between the fourth limiting wheel and the fifth limiting wheel for contact-type passage of the wire rope.

[0013] Furthermore, an annular groove is arranged on the outer circumference of the fourth limiting wheel, and an annular groove is arranged on the outer circumference of the fifth limiting wheel. The steel wire rope is passed through the annular groove and the circumferential surface.

[0014] Furthermore, the detection device includes a magnetic loading probe and a magnetic detection probe which are connected at intervals in the length direction of the force transmission bracket. The magnetic loading probe is used to comb the damaged magnetic signal of the wire rope, and the magnetic detection probe is used to obtain the magnetic field information of the combed damaged magnetic signal. The magnetic field information is processed by a data processing device to obtain the damage data of the wire rope.

[0015] Furthermore, the follower frame also includes a fixed leg fixed between the longitudinal sliding assembly and the fixed base.

[0016] Compared with the prior art, the relative position between the online detection device for steel wire rope of the follow-up offshore oil platform drilling and repair machine of the present invention and the steel wire rope remains unchanged all the time, and the detection device can better perform detection operation on the entire steel wire rope, and is not prone to partial missed detection or incomplete detection of the steel wire rope, thereby greatly improving the accuracy and reliability of the detection result. At the same time, since the steel wire rope is contact-threaded in the force transmission device, mutual squeezing or collision between the steel wire rope and the online detection device for steel wire rope of the follow-up offshore oil platform drilling and repair machine is avoided, thereby greatly improving the service life of the online detection device for steel wire rope of the follow-up offshore oil platform drilling and repair machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an online detection device for a steel wire rope of a follow-up offshore oil platform drilling and repair machine according to an embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a follow-up frame of a follow-up offshore oil platform drilling and repair machine wire rope online detection device according to an embodiment of the present invention;

[0019] Figure 3 Schematic diagram of the structure of a force transmission device of a wire rope online detection device of a follow-up offshore oil platform drilling and repair machine according to an embodiment of the present invention;

[0020] Figure 4 for Figure 3 The schematic diagram of the structure of the power transmission device shown in FIG. 1 when the power transmission wheel groups are not installed;

[0021] Figure 5 for Figure 3 A schematic top view of the structure of the first power transmission wheel set shown;

[0022] Figure 6 for Figure 3 A schematic top view of the structure of the third power transmission wheel set is shown. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] Figure 1 FIG. 1 shows the structure of an on-line wire rope detection device 100 of a follow-up offshore oil platform drilling and repair machine according to an embodiment of the present invention. Figure 1 As shown, the follow-up offshore oil platform drilling and repair machine wire rope online detection device 100 may include: a fixed base 10 ( Figure 1 The figure shows a follower frame 2 on a rope arrangement device, the follower frame 2 includes a fixed base 23 fixedly connected to the fixed foundation 10, a longitudinal sliding assembly 21 connected to the fixed base 23, and a transverse sliding assembly 22 slidably connected to the longitudinal sliding assembly 21; a force transmission device 3 connected to the transverse sliding assembly 22, the force transmission device 3 is used to enable the steel wire rope 6 to pass through its interior in a contact manner and to be able to be lifted or pulled down inside it, so as to transmit the external force generated when the steel wire rope 6 swings during the lifting or pulling process to the transverse sliding assembly 22; and a detection device 4 fixed on the force transmission device 3, the detection device 4 is used to comb and detect the damaged magnetic signal on the steel wire rope 6. Among them, the external force generated by the left and right swing of the steel wire rope 6 drives the force transmission device 3 to move left and right on the transverse sliding assembly 22, and at the same time, the external force generated by the front and back swing of the steel wire rope 6 is transmitted to the force transmission device 3, so that the force transmission device 3 drives the transverse sliding assembly 22 to move back and forth on the longitudinal sliding assembly 21.

[0025] When the follow-up type offshore oil platform drilling and repair machine wire rope online detection device 100 of the embodiment of the present invention is in use, the wire rope 6 on the drum 5 is passed through the force transmission device 3, and the wire rope 6 can be lifted up or pulled down inside the force transmission device 3. As the wire rope 6 swings during the lifting or pulling process, the wire rope 6 will generate a force in any direction on the force transmission device 3. The force in any direction is simultaneously decomposed by the force transmission device 3 into a force that causes the force transmission device 3 to move left and right on the transverse sliding component 22 and a force that causes the force transmission device 3 to drive the transverse sliding component 22 to move forward and backward on the longitudinal sliding component 21, so that the force transmission device 3 and the transverse sliding component 22, as well as the detection device 4, can swing simultaneously with the swing of the wire rope 6. Therefore, even if the steel wire rope 6 moves or shakes greatly during the movement, the relative position between the steel wire rope 6 and the follow-up offshore oil platform drilling and repair machine steel wire rope online detection device 100 remains unchanged, and the detection device 4 can better detect the entire steel wire rope 6, and it is not easy to cause partial missed detection or incomplete detection of the steel wire rope 6, thereby greatly improving the accuracy and reliability of the detection result. At the same time, because the steel wire rope 6 is contact-threaded in the force transmission device 3, mutual squeezing or collision between the steel wire rope 6 and the follow-up offshore oil platform drilling and repair machine steel wire rope online detection device 100 is avoided, thereby greatly improving the service life of the follow-up offshore oil platform drilling and repair machine steel wire rope online detection device 100.

[0026] In such Figure 2 In the preferred embodiment shown, the longitudinal sliding assembly 21 may include a longitudinal fixing frame 211 fixedly connected to the fixing base 23, a longitudinal sliding rod 212 fixed to the longitudinal fixing frame 211, and a longitudinal sliding block 213 slidably connected to the longitudinal sliding rod 212, and the transverse sliding assembly 22 is connected to the longitudinal sliding block 213. In this embodiment, the fixing base 23 may be formed as Figure 2 The transverse beam shown, the longitudinal fixing frame 211 can be two longitudinal beams vertically connected to the two ends of the transverse beam, the two ends of the longitudinal beam can be connected to the fixing plates, and the longitudinal sliding rod 212 is connected between the two fixing plates.

[0027] Preferably, if Figure 2 As shown, in order to improve the stability of the connection between the longitudinal fixing frame 211 and the fixed foundation 10, a fixing leg 1 can be added between the longitudinal fixing frame 211 and the fixed foundation 10. Further, the fixing leg is specifically fixed between the longitudinal beam and the fixed foundation 10.

[0028] In such Figure 2In the preferred embodiment shown, the transverse sliding assembly 22 may include a transverse fixing frame 221 connected to the longitudinal slider 213, a transverse sliding rod 222 fixed to the transverse fixing frame 221, and a transverse slider 223 slidably connected to the transverse sliding rod 222, and the transverse slider 223 is connected to the force transmission device 3. In this embodiment, the transverse fixing frame 221 may include two vertical fixing plates respectively connected to the two longitudinal sliders 213, and the transverse sliding rod 222 is connected between the two vertical fixing plates.

[0029] In order to further improve the smooth movement of the force transmission device 3 driven by the transverse sliding block 223 on the transverse sliding rod 222, it is preferred to connect two transverse sliding rods 222 in parallel between the two vertical fixing plates.

[0030] Furthermore, if Figure 2 As shown, a strip-shaped through hole 224 is formed on the vertical fixing plate of the transverse fixing frame 22, and the length direction of the strip-shaped through hole 224 is parallel to the sliding direction of the transverse fixing frame 22. The transverse sliding rod 222 passes through the strip-shaped through hole 224 and is connected to the transverse fixing frame 22 through a fixing member 225 after being adjusted to a proper position along its length direction. This setting is used to adjust the angle of the force transmission device 3 so that the force transmission device 3 is substantially parallel to the steel wire rope 6.

[0031] In such Figure 3 In the preferred embodiment shown, the force transmission device 3 may include a force transmission bracket 31, a first force transmission wheel group 32 and a second force transmission wheel group 34 connected at intervals in the length direction of the force transmission bracket 31, and the wire rope 6 is simultaneously contact-entered through the first force transmission wheel group 32 and the second force transmission wheel group 34. The detection device 4 is fixed on the force transmission bracket 31 in an area between the first force transmission wheel group 32 and the second force transmission wheel group 34, wherein the structure of the first force transmission wheel group 32 is the same as that of the second force transmission wheel group 34, and the first force transmission wheel group 32 is connected to the first force transmission wheel group 32 and the second force transmission wheel group 34. The wheel set 32 ​​may include a first limiting wheel 321, a second limiting wheel 322 and a third limiting wheel 323 which are rotatably connected to the force transmission bracket 31 at the same time. The first limiting wheel 321 and the second limiting wheel 322 are arranged along the length direction of the force transmission bracket 31, and the third limiting wheel 323 is arranged on the outer side between the first limiting wheel 321 and the second limiting wheel 322, so as to form a threading channel 30 (such as a threading channel 30 for contact-type threading of the steel wire rope 6) between the first limiting wheel 321, the second limiting wheel 322 and the third limiting wheel 323. Figure 5 Combined with Figure 4 As shown, the first limiting wheel 321 , the second limiting wheel 322 and the third limiting wheel 323 can be rotatably connected to the first rotating bracket 324 at the same time, and the first rotating bracket 324 is fixedly connected to the force transmission bracket 31 .

[0032] Preferably, combined Figure 3 and Figure 5As shown, the outer circumferences of the first limiting wheel 321, the second limiting wheel 322 and the third limiting wheel 323 are all provided with an annular groove 35, and the steel wire rope 6 is passed through the annular groove 35. The provision of the annular groove 35 can provide a passing passage 30 for the steel wire rope 6 that is more conducive to its passage, and also helps to avoid wear on the steel wire rope 6.

[0033] In such Figure 3 In the preferred embodiment shown, the force transmission device 3 may also include a third force transmission wheel group 33 connected to the force transmission bracket 31 and located in the area between the first force transmission wheel group 32 and the second force transmission wheel group 34, and the detection device 4 may be located between the first force transmission wheel group 32 and the third force transmission wheel group 33 and between the second force transmission wheel group 34 and the third force transmission wheel group 33, wherein the third force transmission wheel group 33 may include a fourth limiting wheel 331 and a fifth limiting wheel 332 rotatably connected to the force transmission bracket 31, the fourth limiting wheel 331 is colinear with the first limiting wheel 321 and the second limiting wheel 322, and the fifth limiting wheel 332 is arranged on the outer side of the fourth limiting wheel 331 to form a threading channel 30 (such as a threading channel 30) for contact-type passage of the wire rope 6 between the fourth limiting wheel 331 and the fifth limiting wheel 332. Figure 6 Combined with Figure 4 As shown, the fourth limiting wheel 331 and the fifth limiting wheel 332 can be rotatably connected to the second rotating bracket 334 at the same time, and the second rotating bracket 334 is fixedly connected to the force transmission bracket 31. In this embodiment, the structure of the third force transmission wheel group 33 can provide more stable support for the passage of the wire rope 6, and can make the passage of the wire rope 6 in the first force transmission wheel group 32 and the second force transmission wheel group 34 more stable.

[0034] It should be noted that the structure of the third force transmission wheel group 33 can be the same as the structure of the first force transmission wheel group 32 and the second force transmission wheel group 34. The present invention sets the structure of the third force transmission wheel group 33 to the above-mentioned type in order to simplify the structure of the third force transmission wheel group 33, thereby helping to reduce costs while reducing the weight of the force transmission device 3.

[0035] Preferably, combined Figure 3 and Figure 6 As shown, the outer circumference of the fourth limiting wheel 331 is provided with an annular groove 35, the outer circumference of the fifth limiting wheel 332 is a circumferential surface, and the wire rope 6 is inserted between the annular groove 35 and the circumferential surface. The outer circumference of the fifth limiting wheel 332 is a circumferential surface, which helps to reduce the cost of the third force transmission wheel group 33 while providing a limiting effect on the wire rope 6.

[0036] In such Figure 3 and Figure 4In the preferred embodiment shown, the detection device 4 may include a magnetic loading probe 42 and a magnetic detection probe 41 connected at intervals in the length direction of the force transmission bracket 31, the magnetic loading probe 42 is used to comb the damage magnetic signal of the steel wire rope 6, and the magnetic detection probe 41 is used to obtain the magnetic field information of the combed damage magnetic signal, and the magnetic field information is processed by the data processing device to obtain the damage data of the steel wire rope 6. In this embodiment, the magnetic loading probe 42 can form a first working area for combing the damage magnetic signal of the steel wire rope 6, and the magnetic detection probe 41 can form a second working area for obtaining the magnetic field information of the combed damage magnetic signal. The steel wire rope 6 is simultaneously arranged in the first working area and the second working area, and moves relative to the magnetic loading probe 42 and the magnetic detection probe 41, so as to complete the detection work.

[0037] It should be noted that when the steel wire rope 6 is pulled up for detection, the magnetic loading probe 42 needs to be set between the second force transmission wheel group 33 and the third force transmission wheel group 34, and the magnetic detection probe 41 needs to be set between the first force transmission wheel group 32 and the third force transmission wheel group 33; and when the steel wire rope 6 is pulled down for detection, the magnetic loading probe 42 needs to be set between the first force transmission wheel group 32 and the third force transmission wheel group 33, and the magnetic detection probe 41 needs to be set between the second force transmission wheel group 33 and the third force transmission wheel group 34. Figure 3 and Figure 4 In the illustrated embodiment, the positions of the magnetic detection probe 41 and the magnetic loading probe 42 are suitable for detection when the wire rope 6 is lifted.

[0038] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the invention belongs.

[0039] In the description of the present application, it should be understood that the terms "horizontal", "longitudinal", "vertical", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A follow-up offshore oil platform drilling and repair machine wire rope online detection device, characterized in that: include: A follower frame fixed on a fixed foundation, the follower frame comprising a fixed base fixedly connected to the fixed foundation, a longitudinal sliding assembly connected to the fixed base, and a transverse sliding assembly slidably connected to the longitudinal sliding assembly; A force transmission device connected to the transverse sliding assembly, the force transmission device is used to allow the steel wire rope to pass through the interior thereof in a contact manner and to be lifted or pulled down inside the interior thereof, so as to transmit the external force generated when the steel wire rope swings during the lifting or pulling down process to the transverse sliding assembly; as well as A detection device fixed on the force transmission device, the detection device is used to comb and detect the damaged magnetic signal on the wire rope, Among them, the external force generated by the left and right swing of the steel wire rope drives the force transmission device to move left and right on the transverse sliding component, and at the same time, the external force generated by the forward and backward swing of the steel wire rope is transmitted to the force transmission device, so that the force transmission device drives the transverse sliding component to move forward and backward on the longitudinal sliding component.

2. The online detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to claim 1 is characterized in that: The longitudinal sliding assembly comprises a longitudinal fixing frame fixedly connected to the fixed base, a longitudinal sliding rod fixed to the longitudinal fixing frame, and a longitudinal sliding block slidably connected to the longitudinal sliding rod, and the transverse sliding assembly is connected to the longitudinal sliding block.

3. The online detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to claim 2 is characterized in that: The transverse sliding assembly includes a transverse fixing frame connected to the longitudinal sliding block, a transverse sliding rod fixed to the transverse fixing frame, and a transverse sliding block slidably connected to the transverse sliding rod, wherein the transverse sliding block is connected to the force transmission device.

4. The on-line detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to claim 3 is characterized in that: The transverse fixing frame is formed with a strip through hole, the length direction of which is parallel to the sliding direction of the transverse fixing frame. The transverse sliding rod passes through the strip through hole and is connected to the transverse fixing frame via a fixing member after being adjusted to a proper position along its length direction.

5. The online detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to any one of claims 1 to 4, characterized in that: The force transmission device includes a force transmission bracket, a first force transmission wheel group and a second force transmission wheel group connected at intervals in the length direction of the force transmission bracket, the steel wire rope is simultaneously passed through the first force transmission wheel group and the second force transmission wheel group in a contacting manner, the detection device is fixed on the force transmission bracket in an area between the first force transmission wheel group and the second force transmission wheel group, wherein the structure of the first force transmission wheel group is the same as that of the second force transmission wheel group, the first force transmission wheel group includes a first limiting wheel, a second limiting wheel and a third limiting wheel that are simultaneously rotatably connected to the force transmission bracket, the first limiting wheel and the second limiting wheel are arranged along the length direction of the force transmission bracket, and the third limiting wheel is arranged on the outer side between the first limiting wheel and the second limiting wheel to form a passing channel for the steel wire rope to pass through in a contacting manner between the first limiting wheel, the second limiting wheel and the third limiting wheel.

6. The on-line detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to claim 5 is characterized in that: The outer circumferences of the first limiting wheel, the second limiting wheel and the third limiting wheel are all provided with an annular groove, and the steel wire rope is passed through the annular groove.

7. The on-line detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to claim 5 is characterized in that: The force transmission device also includes a third force transmission wheel group connected to the force transmission bracket and located in the area between the first force transmission wheel group and the second force transmission wheel group, and the detection device is located between the first force transmission wheel group and the third force transmission wheel group and between the second force transmission wheel group and the third force transmission wheel group, wherein the third force transmission wheel group includes a fourth limiting wheel and a fifth limiting wheel rotatably connected to the force transmission bracket, the fourth limiting wheel is colinear with the first limiting wheel and the second limiting wheel, and the fifth limiting wheel is arranged on the outside of the fourth limiting wheel to form a passage between the fourth limiting wheel and the fifth limiting wheel for contact-type passage of the steel wire rope.

8. The on-line detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to claim 7 is characterized in that: The outer circumference of the fourth limiting wheel is provided with an annular groove, the outer circumference of the fifth limiting wheel is a circumferential surface, and the steel wire rope is passed through the annular groove and the circumferential surface.

9. The on-line detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to claim 5 is characterized in that: The detection device includes a magnetic loading probe and a magnetic detection probe which are connected at intervals in the length direction of the force transmission bracket. The magnetic loading probe is used to comb the damaged magnetic signal of the wire rope, and the magnetic detection probe is used to obtain the magnetic field information of the combed damaged magnetic signal. The magnetic field information is processed by a data processing device to obtain the damage data of the wire rope.

10. The online detection device for steel wire rope of a follow-up offshore oil platform drilling and repair machine according to any one of claims 1 to 4, characterized in that: The follower frame also includes a fixed leg fixed between the longitudinal sliding assembly and a fixed foundation.

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