A method for monitoring the life of a wire rope

Abstract

The present invention relates to the technical field of wire rope life monitoring, and specifically discloses a wire rope life monitoring method, comprising: obtaining basic status data of the wire rope, calculating and obtaining a total value of the wire rope length change ratio; comparing the total value with a wire rope length change ratio threshold value to obtain a wire rope total length monitoring signal; then calculating and obtaining a wire rope change performance value at the current monitoring moment; comparing the total value with a wire rope change performance extreme value; obtaining a wire rope change stability signal; obtaining a maximum value of a single-wire breakage ratio of the wire rope at the previous monitoring moment; comparing the total value with a wire rope breakage extreme value ratio to obtain a full-segment monitoring signal; then calculating and obtaining a full-segment single-wire breakage performance rate; comparing the total value with a full-segment single-wire breakage performance threshold value; obtaining a wire rope early warning signal or a wire rope risk signal, thereby ensuring the stability of the wire rope during use, avoiding the wire rope breakage that affects use, and avoiding safety hazards caused by the wire rope breakage during use.

Description

Technical Field

[0001] The present invention relates to the technical field of wire rope life monitoring, and in particular to a wire rope life monitoring method. Background Art

[0002] Wire ropes, as components for carrying and transporting people and objects, are widely used in elevators, suspension bridges, cableways, cranes, mines, and other fields, and are the "lifeline" of the industrial sector. During use, wire ropes can become fatigued, corroded, worn, broken, or even fractured, leading to a decrease in their carrying capacity and reliability, which directly affects the safety of people's lives and property. Therefore, non-destructive testing and life prediction of wire ropes are crucial. Ensuring the operation of wire ropes is a prerequisite for the sustainable development of related industries.

[0003] The wire rope inspection cycle in most industrial equipment is fixed, and during the monitoring process, the wire rope cannot be fully monitored based on the overall condition of the wire rope, and accurate monitoring suggestions cannot be given, leading to safety problems and situations. Therefore, we propose a wire rope life monitoring method that can effectively monitor and calculate based on the overall condition of the wire rope to ensure the safe use of the wire rope. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for monitoring the life of a steel wire rope to solve the above-mentioned problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for monitoring the life of a steel wire rope, comprising:

[0007] Obtain the basic status data of the wire rope and calculate the total value LB of the wire rope length change ratio e ;

[0008] The wire rope length change ratio LB e Compare with the wire rope length change ratio threshold LBy; obtain the wire rope total length monitoring signal;

[0009] Based on the wire rope total length monitoring signal, calculate the wire rope change performance value ZTBB at the current monitoring time e e ; Specifically include:

[0010] A1: Get the current unit length value of each unit length on the wire rope, marked as DL (e，i) Calculate the wire rope length change performance value SBX at the current monitoring time e e ;

[0011] A2: Get the cross-sectional diameter of each unit length of the wire rope at the current monitoring time e, marked as DJD(e，i) , calculate and obtain the abnormal change value JMY of the wire rope cross section e ;

[0012] A3: Based on the length change value SBX of the wire rope at the current monitoring time e e and cross-sectional abnormal change performance value JMY e ;

[0013] The wire rope change performance value ZTBB at the current monitoring moment e e Compare with the extreme value ZTBBy of the wire rope change performance; obtain the wire rope change stability signal;

[0014] Based on the stable signal of the wire rope change, the maximum single wire breakage ratio SLBmax of the wire rope at the previous monitoring moment e is obtained e ; Compare with the wire rope break extreme value ratio SLBJ: obtain the full section monitoring signal;

[0015] Based on the full-segment monitoring signal, the full-segment single-filament breakage rate SBL is calculated. e ; and compare it with the full-segment single-wire breakage performance threshold SBLy; obtain a wire rope early warning signal or a wire rope risk signal.

[0016] As a further solution of the present invention, the basic status data of the steel wire rope includes a steel wire rope cross-sectional diameter value JD, a steel wire rope total length value LZ, and a steel wire rope single filament number value SD; the steel wire rope is divided into distance points according to a unit length L, and each unit length is marked as i in sequence, where i is 1, 2, 3, ...;

[0017] Take unit time T as monitoring period and obtain the real-time value DJD of the wire rope length at the current monitoring moment e e ;

[0018] pass Calculate the total value of the wire rope length change ratio LB e .

[0019] As a further solution of the present invention: the wire rope length change ratio total value LB e Compare with the wire rope length change ratio threshold LBy;

[0020] If the length of the wire rope changes compared to the total value LB e When the wire rope length change ratio is less than or equal to the wire rope length change ratio threshold LBy, a wire rope total length stability signal is generated;

[0021] If the length of the wire rope changes compared to the total value LB e When the value is greater than the wire rope length change ratio threshold LBy, a wire rope total length monitoring signal is generated.

[0022] As a further solution of the present invention: the steel wire rope length change performance value SBX e The calculation method is:

[0023] 011: Pass Calculate the unit length change rate BDB of each section of wire rope at the current monitoring time e (e，i) ;

[0024] 012: Pass again Calculate the average rate of change of unit length of each section of wire rope at the current monitoring time e, BHJ (e，i) ;

[0025] 013: The average rate of change per unit length of each section of the wire rope at the current monitoring time e, BHJ (e，i) The standard deviation is calculated to obtain the standard deviation value BHBC of the unit length change rate of each section of wire rope at the current monitoring time e. e ;

[0026] 014: Pass Calculate the wire rope length change performance value SBX e ; Wherein, a is the performance coefficient of unit length change, and b is the standard coefficient of unit length change rate; wherein, a+b=1, and a>0, b>0.

[0027] As a further solution of the present invention: the cross-sectional diameter value of the steel wire rope is marked as DJD (e，i) It is the minimum cross-sectional diameter of the wire rope on each unit length of the wire rope at the current monitoring time e.

[0028] As a further solution of the present invention: the abnormal change performance value JMY of the cross section of the steel wire rope e The calculation method is:

[0029] 021: Pass Calculate the abnormal cross-sectional change rate JMB of each section of the wire rope at the current monitoring time e (e，i) ;

[0030] 022: The cross-sectional abnormal change rate JMB of each section of the wire rope at the current monitoring time e (e，i) Compare with the cross-section abnormal change rate threshold JMBy respectively;

[0031] Get the cross-section abnormal change rate JMB (e，i) The number of values greater than or equal to the cross-sectional abnormal change rate threshold JMBy is denoted as n;

[0032] 023: By JMCY (e，i) =DJD (e，i) -DJD (e，i-1)Calculate the cross-sectional difference value JMCY of each section of wire rope at the current monitoring time e (e，i) ;

[0033] Then the cross-sectional difference value JMCY of each section of wire rope at the current monitoring time e is calculated. (e，i) Calculate the standard deviation and obtain the cross-sectional difference standard value JMCZ of the i segment at the current monitoring time e e ;

[0034] 024: Pass Calculate the cross-sectional abnormal change performance value JMY of the wire rope at the current monitoring time e e .

[0035] As a further solution of the present invention: by ZTBB e =SBX e +JMY e Calculate the wire rope change performance value ZTBB at the current monitoring moment e e .

[0036] As a further solution of the present invention: the wire rope change performance value ZTBB at the current monitoring moment e is e Compare with the extreme value ZTBBy of the wire rope variation performance;

[0037] If the wire rope performance value ZTBB changes e If the value is greater than or equal to the extreme value ZTBBy of the wire rope variation, a wire rope variation abnormality signal is generated;

[0038] If the wire rope performance value ZTBB changes e When the value is less than the extreme value ZTBBy of the wire rope variation, a wire rope variation stability signal is generated.

[0039] As a further solution of the present invention: the maximum single-filament breakage ratio SLBmax e The way to obtain is:

[0040] Get the number of single-wire breaks in each section of wire rope at the current monitoring time e, and mark the number of single-wire breaks in each section of wire rope as SLL (e，i) ;

[0041] pass Calculate the single wire breakage ratio SLB of each section of wire rope at the current monitoring time e (e，i) ;

[0042] Get the maximum single wire breakage ratio of the wire rope at the monitoring time e before, recorded as SLBmax e ;

[0043] The maximum single-filament breakage ratio SLBmax eCompared with the wire rope breakage extreme value ratio SLBJ:

[0044] If the maximum single-filament breakage ratio SLBmax e If the wire rope breakage extreme value ratio SLBJ is greater than or equal to the wire rope breakage extreme value ratio SLBJ, a breakage signal is generated;

[0045] If the maximum single-filament breakage ratio SLBmax e When the wire rope breakage limit ratio SLBJ is less than that, a full-section monitoring signal is generated.

[0046] As a further solution of the present invention: the whole-segment single-filament breakage performance rate SBL e The calculation method is:

[0047] Get the single wire breakage ratio SLB of the wire rope (e，i) Compared with the mean single-filament breakage ratio SLJ, the single-filament breakage ratio SLB is obtained. (e，i) The number of values greater than or equal to the mean single-filament breakage ratio SLJ is denoted as m;

[0048] Then pass Calculate the single wire breakage rate SBL of the entire wire rope e ;

[0049] Then the whole segment single fiber breakage rate SBL e Compared with the whole-segment single-filament breakage threshold SBLy;

[0050] If the whole segment single fiber breakage rate SBL e When the value is less than or equal to the threshold value SBLy for the fracture of the entire single wire, a wire rope warning signal is generated;

[0051] If the whole segment single fiber breakage rate SBL e If the value is greater than the threshold value SBLy for the fracture of the entire single wire, a wire rope risk signal is generated.

[0052] Beneficial effects of the present invention:

[0053] By monitoring the overall length of the wire rope and then precisely monitoring each unit length of the wire rope, it is possible to determine whether there is a large abnormality in a certain unit length of the wire rope during use. By monitoring the changes and breakage of single wires in all unit lengths of the wire rope, the wire rope can be maintained, repaired and replaced in advance to ensure the stability of the wire rope during use, avoid wire rope breakage that affects use and causes losses, and at the same time, avoid safety hazards caused by wire rope breakage during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present invention will be further described below with reference to the accompanying drawings.

[0055] Figure 1 It is a schematic diagram of the process structure of the method of the present invention;

[0056] Figure 2 It is a flow chart of the method for calculating the changing performance value of the wire rope in the present invention. DETAILED DESCRIPTION

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0058] See also Figure 1 As shown, the present invention is a method for monitoring the life of a steel wire rope, comprising:

[0059] Step 1: Obtain basic wire rope status data, including wire rope cross-sectional diameter value JD, wire rope total length value LZ, and wire rope single filament number value SD; divide the wire rope into distance points based on unit length L, and mark each unit length as i, where i is 1, 2, 3, etc.;

[0060] Take unit time T as monitoring period and obtain the real-time value DJD of the wire rope length at the current monitoring moment e e ;

[0061] pass Calculate the total value of the wire rope length change ratio LB e ;

[0062] The wire rope length change ratio LB e Compare with the wire rope length change ratio threshold LBy;

[0063] If the length of the wire rope changes compared to the total value LB e When the wire rope length change ratio is less than or equal to the wire rope length change ratio threshold LBy, a wire rope total length stability signal is generated; this indicates that the total length of the wire rope has not changed significantly. At this time, the wire rope can be used normally and is in good overall condition.

[0064] If the length of the wire rope changes compared to the total value LB e If the value is greater than the wire rope length change ratio threshold LBy, a wire rope total length monitoring signal is generated; at this point, the wire rope needs to be monitored further;

[0065] Step 2: Based on the wire rope total length monitoring signal, calculate the wire rope change performance value ZTBB at the current monitoring time e e ;

[0066] Step 3: The wire rope change performance value ZTBB at the current monitoring time e e Compare with the extreme value ZTBBy of the wire rope variation performance;

[0067] If the wire rope performance value ZTBB changes e If the value is greater than or equal to the extreme value ZTBBy of the wire rope variation, a wire rope variation abnormality signal is generated. In this case, it indicates that the length and cross-section of the wire rope are abnormal and the wire rope cannot meet the requirements for continued use.

[0068] If the wire rope performance value ZTBB changes e If the value is less than the extreme value ZTBBy of the wire rope variation, a stable wire rope variation signal is generated. This indicates that the length and cross-section of the wire rope have not changed much and are in a relatively stable state. In this case, further monitoring of the single wire of the wire rope is required.

[0069] Step 4: Based on the stable signal of the wire rope change, obtain the number of single-wire breaks in each section of the wire rope at the current monitoring time e, and mark the number of single-wire breaks in each section of the wire rope as SLL (e，i) ;

[0070] pass Calculate the single wire breakage ratio SLB of each section of wire rope at the current monitoring time e (e，i) ;

[0071] Get the maximum single wire breakage ratio of the wire rope at the monitoring time e before, recorded as SLBmax e ;

[0072] The maximum single-filament breakage ratio SLBmax e Compared with the wire rope breakage extreme value ratio SLBJ:

[0073] If the maximum single-filament breakage ratio SLBmax e If the wire rope breakage extreme value ratio SLBJ is greater than or equal to the wire rope breakage extreme value ratio SLBJ, a breakage signal is generated. At this time, it means that the number of single wires in a certain unit length of the wire rope is too large to be broken and has reached a state where it cannot be used.

[0074] If the maximum single-filament breakage ratio SLBmax e If the value is less than the wire rope breakage extreme value ratio SLBJ, a full-section monitoring signal is generated; that is, the number of single-wire breakages per unit length of the wire rope is small, and the overall wire rope breakage situation needs to be judged.

[0075] Step 5: Based on the full-segment monitoring signal, obtain the single-wire breakage ratio SLB of the wire rope (e，i) Compared with the mean single-filament breakage ratio SLJ, the single-filament breakage ratio SLB is obtained. (e，i) The number of values greater than or equal to the mean single-filament breakage ratio SLJ is denoted as m;

[0076] Then pass Calculate the single wire breakage rate SBL of the entire wire rope e ;

[0077] Then the whole segment single fiber breakage rate SBL e Compared with the whole-segment single-filament breakage threshold SBLy;

[0078] If the whole segment single fiber breakage rate SBL e If the value is less than or equal to the threshold value SBLy for the fracture of a single wire in the entire section, a wire rope warning signal is generated. This indicates that the wire rope is in a usable state due to the change in its overall length and the fracture of a single wire in the wire rope. However, due to the change in the overall length and the fracture of a single wire in the wire rope, the wire rope needs maintenance and repair. The monitoring cycle can be shortened for better monitoring.

[0079] If the whole segment single fiber breakage rate SBL e When the value is greater than the threshold value SBLy for the fracture of the entire single wire, a wire rope risk signal is generated. This can remind the staff that the overall condition of the wire rope is poor and recommend early replacement.

[0080] By monitoring the overall length of the wire rope and then precisely monitoring each unit length of the wire rope, it is possible to determine whether there is a large abnormality in a certain unit length of the wire rope during use. By monitoring the changes and breakage of single wires in all unit lengths of the wire rope, the wire rope can be maintained, repaired and replaced in advance to ensure the stability of the wire rope during use, avoid wire rope breakage that affects use and causes losses, and at the same time, avoid safety hazards caused by wire rope breakage during use.

[0081] Example 2

[0082] Reference Figure 2 As shown, based on the above embodiment, the present embodiment is about the wire rope change performance value ZTBB at the current monitoring moment e e The following calculation methods are provided:

[0083] Specifically include:

[0084] A1: Get the current unit length value of each unit length on the wire rope, marked as DL (e，i) Calculate the wire rope length change performance value SBX at the current monitoring time e e ;

[0085] Among them, the wire rope length change performance value SBX e The calculation method is:

[0086] 011: Pass Calculate the unit length change rate BDB of each section of wire rope at the current monitoring time e (e，i) ;

[0087] 012: Pass again Calculate the average rate of change of unit length of each section of wire rope at the current monitoring time e, BHJ (e，i) ;

[0088] 013: The average rate of change per unit length of each section of the wire rope at the current monitoring time e, BHJ (e，i) The standard deviation is calculated to obtain the standard deviation value BHBC of the unit length change rate of each section of wire rope at the current monitoring time e. e ;

[0089] 014: Pass Calculate the wire rope length change performance value SBX e ; Wherein, a is the performance coefficient of unit length change, b is the standard coefficient of unit length change rate; where a+b=1, and a>0, b>0;

[0090] By monitoring and calculating the changes of each section of wire rope, the length change performance value of the wire rope is obtained. When the length change performance value is smaller, it means that the overall length change of the wire rope is kept in a relatively uniform state, and there is no significant change in the wire rope within a certain unit length.

[0091] A2: Get the cross-sectional diameter of each unit length of the wire rope at the current monitoring time e, marked as DJD (e，i) , calculate and obtain the abnormal change value JMY of the wire rope cross section e ;

[0092] It should be noted that the wire rope cross-section diameter value is marked as DJD (e，i) The minimum cross-sectional diameter of the wire rope per unit length at the current monitoring time e;

[0093] Abnormal change performance value of wire rope cross section JMY e The calculation method is:

[0094] 021: Pass Calculate the abnormal cross-sectional change rate JMB of each section of the wire rope at the current monitoring time e (e，i) ;

[0095] 022: The cross-sectional abnormal change rate JMB of each section of the wire rope at the current monitoring time e (e，i) Compare with the cross-section abnormal change rate threshold JMBy respectively;

[0096] Get the cross-section abnormal change rate JMB (e，i) The number of values greater than or equal to the cross-sectional abnormal change rate threshold JMBy is denoted as n;

[0097] 023: By JMCY (e，i) =DJD (e，i) -DJD (e，i-1) Calculate the cross-sectional difference value JMCY of each section of wire rope at the current monitoring time e (e，i) ;

[0098] Then the cross-sectional difference value JMCY of each section of wire rope at the current monitoring time e is calculated. (e，i) Calculate the standard deviation and obtain the cross-sectional difference standard value JMCZ of the i segment at the current monitoring time e e ;

[0099] 024: Pass Calculate the cross-sectional abnormal change performance value JMY of the wire rope at the current monitoring time e e ;

[0100] The cross-sectional diameter of each unit length of the wire rope is monitored to further obtain the cross-sectional abnormal change performance value of the wire rope. The smaller the cross-sectional abnormal change performance value of the wire rope, the smaller the cross-sectional change of the wire rope during use. The smaller the cross-sectional change, the better the condition of the wire rope.

[0101] A3: Based on the length change value SBX of the wire rope at the current monitoring time e e and cross-sectional abnormal change performance value JMY e ;

[0102] by ZTBB e =SBX e +JMY e Calculate the wire rope change performance value ZTBB at the current monitoring moment e e .

[0103] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for monitoring the life of a steel wire rope, characterized in that: include: Obtain the basic status data of the wire rope and calculate the total value LB of the wire rope length change ratio e ; The wire rope length change ratio LB e Compare with the wire rope length change ratio threshold LBy; obtain the wire rope total length monitoring signal; Based on the wire rope total length monitoring signal, calculate the wire rope change performance value ZTBB at the current monitoring time e e ; Specifically include: A1: Get the current unit length value of each unit length on the wire rope, marked as DL （e，i） Calculate the wire rope length change performance value SBX at the current monitoring time e e ; The wire rope length change performance value SBX e The calculation method is: 011: Pass Calculate the unit length change rate BDB of each section of wire rope at the current monitoring time e （e，i） ; 012: Pass again Calculate the average rate of change of unit length of each section of wire rope at the current monitoring time e, BHJ （e，i） ; 013: The average rate of change per unit length of each section of the wire rope at the current monitoring time e, BHJ （e，i） The standard deviation is calculated to obtain the standard deviation value BHBC of the unit length change rate of each section of wire rope at the current monitoring time e. e ; 014: Pass Calculate the wire rope length change performance value SBX e ; Where a is the performance coefficient of unit length change, b is the standard coefficient of unit length change rate; where a+b=1, and a>0, b>0; A2: Get the cross-sectional diameter of each unit length of the wire rope at the current monitoring time e, marked as DJD （e，i） , calculate and obtain the abnormal change value JMY of the wire rope cross section e ; The abnormal change performance value of the wire rope cross section JMY e The calculation method is: 021: Pass Calculate the abnormal cross-sectional change rate JMB of each section of the wire rope at the current monitoring time e （e，i） ; 022: The cross-sectional abnormal change rate JMB of each section of the wire rope at the current monitoring time e （e，i） Compare with the cross-section abnormal change rate threshold JMBy respectively; Get the cross-section abnormal change rate JMB （e，i） The number of values greater than or equal to the cross-sectional abnormal change rate threshold JMBy is denoted as n; 023: Pass Calculate the cross-sectional difference value JMCY of each section of wire rope at the current monitoring time e （e，i） ; Then the cross-sectional difference value JMCY of each section of wire rope at the current monitoring time e is calculated. （e，i） Calculate the standard deviation and obtain the cross-sectional difference standard value JMCZ of the i segment at the current monitoring time e e ; 024: Pass Calculate the cross-sectional abnormal change performance value JMY of the wire rope at the current monitoring time e e ; A3: Based on the length change value SBX of the wire rope at the current monitoring time e e and cross-sectional abnormal change performance value JMY e ; pass Calculate the wire rope change performance value ZTBB at the current monitoring moment e e ; The wire rope change performance value ZTBB at the current monitoring moment e e Compare with the extreme value ZTBBy of the wire rope change performance; obtain the wire rope change stability signal; Based on the stable signal of the wire rope change, the maximum single wire breakage ratio SLBmax of the wire rope at the previous monitoring moment e is obtained e ; Compare with the wire rope break extreme value ratio SLBJ: obtain the full section monitoring signal; Based on the full-segment monitoring signal, the full-segment single-filament breakage rate SBL is calculated. e ; and compare it with the full-segment single-wire breakage performance threshold SBLy; obtain a wire rope early warning signal or a wire rope risk signal.

2. A wire rope life monitoring method according to claim 1, characterized in that: The basic status data of the steel wire rope includes the steel wire rope cross-sectional diameter value JD, the total length value LZ of the steel wire rope and the number of single wires in the steel wire rope SD; the steel wire rope is divided into distance points according to the unit length L, and each unit length is marked as i in sequence, where i is 1, 2, 3, etc.; Take unit time T as monitoring period and obtain the real-time value DJD of the wire rope length at the current monitoring moment e e ; pass Calculate the total value of the wire rope length change ratio LB e .

3. A wire rope life monitoring method according to claim 1, characterized in that: The wire rope length change ratio LB e Compare with the wire rope length change ratio threshold LBy; If the length of the wire rope changes compared to the total value LB e When the wire rope length change ratio is less than or equal to the wire rope length change ratio threshold LBy, a wire rope total length stability signal is generated; If the length of the wire rope changes compared to the total value LB e When the value is greater than the wire rope length change ratio threshold LBy, a wire rope total length monitoring signal is generated.

4. A wire rope life monitoring method according to claim 1, characterized in that: The wire rope cross-sectional diameter value is marked as DJD （e，i） It is the minimum cross-sectional diameter of the wire rope on each unit length of the wire rope at the current monitoring time e.

5. A wire rope life monitoring method according to claim 1, characterized in that: The wire rope change performance value ZTBB at the current monitoring moment e e Compare with the extreme value ZTBBy of the wire rope variation performance; If the wire rope performance value ZTBB changes e If the value is greater than or equal to the extreme value ZTBBy of the wire rope variation, a wire rope variation abnormality signal is generated; If the wire rope performance value ZTBB changes e When the value is less than the extreme value ZTBBy of the wire rope variation, a wire rope variation stability signal is generated.

6. A wire rope life monitoring method according to claim 1, characterized in that: The maximum single-filament breakage ratio SLBmax e The way to obtain is: Get the number of single-wire breaks in each section of wire rope at the current monitoring time e, and mark the number of single-wire breaks in each section of wire rope as SLL （e，i） ; pass Calculate the single wire breakage ratio SLB of each section of wire rope at the current monitoring time e （e，i） ; Get the maximum single wire breakage ratio of the wire rope at the monitoring time e before, recorded as SLBmax e ; The maximum single-filament breakage ratio SLBmax e Compared with the wire rope breakage extreme value ratio SLBJ: If the maximum single-filament breakage ratio SLBmax e If the wire rope breakage extreme value ratio SLBJ is greater than or equal to the wire rope breakage extreme value ratio SLBJ, a breakage signal is generated; If the maximum single-filament breakage ratio SLBmax e When the wire rope breakage limit ratio SLBJ is less than that, a full-section monitoring signal is generated.

7. A wire rope life monitoring method according to claim 1, characterized in that: The whole segment single fiber breakage performance rate SBL e The calculation method is: Get the single wire breakage ratio SLB of the wire rope （e，i） Compared with the mean single-filament breakage ratio SLJ, the single-filament breakage ratio SLB is obtained. （e，i） The number of values greater than or equal to the mean single-filament breakage ratio SLJ is denoted as m; Then pass Calculate the single wire breakage rate SBL of the entire wire rope e .

8. A wire rope life monitoring method according to claim 7, characterized in that: The whole-segment single-filament breakage rate SBL e Compared with the whole-segment single-filament breakage threshold SBLy; If the whole segment single fiber breakage rate SBL e When the value is less than or equal to the threshold value SBLy for the fracture of the entire single wire, a wire rope warning signal is generated; If the whole segment single fiber breakage rate SBL e If the value is greater than the threshold value SBLy for the fracture of the entire single wire, a wire rope risk signal is generated.

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