Steel wire rope service life monitoring method

Abstract

The invention relates to the technical field of steel wire rope life monitoring, and particularly discloses a steel wire rope life monitoring method, which comprises the following steps: acquiring basic state data of a steel wire rope, and calculating to obtain a steel wire rope length change ratio total value; comparing with a steel wire rope length change ratio threshold value to obtain a steel wire rope total length monitoring signal; calculating to obtain the change performance value of the steel wire rope at the current monitoring moment; comparing with a steel wire rope change expression extreme value; obtaining a steel wire rope change stable signal; obtaining the maximum monofilament fracture ratio of the steel wire rope at the previous monitoring moment; comparing with a steel wire rope fracture extreme value ratio to obtain a whole-section monitoring signal; calculating to obtain the fracture expression rate of the whole-section monofilament; comparing with a whole-section monofilament fracture performance threshold value; a steel wire rope early warning signal or a steel wire rope risk signal is obtained, the stability of the steel wire rope in the using process is guaranteed, use is prevented from being affected by breakage of the steel wire rope, and potential safety hazards caused by breakage of the steel wire rope in the using process can be avoided.

Description

Technical Field

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

[0002] As a load-bearing and transportation component for people or objects, wire ropes are widely used in elevators, suspension bridges, cableways, cranes, mines and other fields, and are the "lifeline" of the industrial field. During use, wire ropes may become fatigued, rusted, worn, broken or even fractured, resulting in a decrease in their load-bearing capacity and reliability, which is directly related to the safety of people's lives and property. Therefore, it is very important to conduct non-destructive testing and life prediction of wire ropes. Ensuring the operation of wire ropes is a prerequisite for the sustainable development of related industries.

[0003] The inspection cycle of wire ropes in most industrial equipment is fixed, and during the monitoring process of the wire rope, it is not possible to conduct comprehensive monitoring based on the overall condition of the wire rope, and it is impossible to give accurate monitoring suggestions, which leads to safety problems and conditions. 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 object 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 and obtain the wire rope length change performance value SBX at the current monitoring time e e ;

[0011] A2: Get the wire rope cross-sectional diameter value 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 performance 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 time e e Compare with the extreme value ZTBBy of the wire rope change performance; obtain the stable signal of the wire rope change;

[0014] Based on the stable signal of wire rope change, the maximum single wire breakage ratio SLBmax of 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 performance rate SBL is calculated e ; and compare it with the threshold value SBLy of the whole single wire breakage; obtain the wire rope early warning signal or 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 wire 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, wherein 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 time 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 Less than or equal to the wire rope length change ratio threshold LBy, generating a wire rope total length stability signal;

[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 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 the 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; where, 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 value of the wire rope cross-sectional diameter on each unit length of 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) They are compared 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 standard value JMCZ of the cross-sectional difference of segment i at the current monitoring time e e ;

[0034] 024: Pass Calculate the abnormal cross-sectional 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 time e e .

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

[0037] If the wire rope changes the performance value ZTBB e If it is greater than or equal to the extreme value ZTBBy of the wire rope change, an abnormal wire rope change signal is generated;

[0038] If the wire rope changes the performance value ZTBB e When it is smaller than the extreme value ZTBBy of the wire rope variation, a stable wire rope variation 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 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) ;

[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 previous monitoring time e, 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 single fiber breakage ratio is the maximum SLBmax e Greater than or equal to the wire rope break extreme value ratio SLBJ, generating a break signal;

[0045] If the single fiber breakage ratio is the maximum SLBmax e When the wire rope breakage limit ratio SLBJ is smaller 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 breaking 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 value of the single-filament breakage ratio SLJ is denoted as m;

[0048] Then pass Calculate the single-filament 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 performance threshold SBLy;

[0050] If the whole segment single fiber breakage rate SBL e When the wire rope 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 When the value is greater than the threshold value SBLy for the breakage 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 can be determined whether there is a large abnormality in a certain unit length of the wire rope during use. Then, 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 its 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 in conjunction with 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are 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 the basic status data of the wire rope, including the wire rope cross-sectional diameter value JD, the wire rope total length value LZ and the wire rope single wire number value SD; divide the wire rope into distance points according to the unit length L, and mark each unit length as i in sequence, where i is 1, 2, 3...;

[0060] Take unit time T as monitoring period and obtain the real-time value DJD of the wire rope length at the current monitoring time 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 time, 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: Set 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 changes the performance value ZTBB e If the value is greater than or equal to the extreme value ZTBBy of the wire rope change, a wire rope change abnormality signal is generated; at this time, it means 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 changes the performance value ZTBB e When the value is less than the extreme value ZTBBy of the wire rope change, a stable wire rope change signal is generated; this indicates that the length and cross-section of the wire rope do not change much and are in a relatively stable state. At this time, it is necessary to further monitor the single wire of the wire rope;

[0069] Step 4: Based on the stable signal of the wire rope change, obtain the number of single-wire breaks of each wire rope at the current monitoring time e, and mark the number of single-wire breaks of each 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 previous monitoring time e, 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 single fiber breakage ratio is the maximum SLBmax e When 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 broken and the wire rope is unusable;

[0074] If the single fiber breakage ratio is the maximum SLBmax e If the wire rope fracture extreme value ratio SLBJ is smaller than that, a full-segment monitoring signal is generated; that is, the number of single-wire fractures per unit length of the wire rope is small, and the fracture situation of the entire wire rope 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 value of the single-filament breakage ratio SLJ is denoted as m;

[0076] Then pass Calculate the single-filament 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 performance threshold SBLy;

[0078] 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; this indicates that the change of the wire rope and the fracture of the wire rope are in a usable state, but due to the change of the overall length and the fracture of the single wire in the wire rope, the wire rope needs to be maintained and repaired. 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 risk signal for the wire rope is generated. This can remind the staff that the overall condition of the wire rope is poor and it is recommended to replace it in advance.

[0080] By monitoring the overall length of the wire rope and then precisely monitoring each unit length of the wire rope, it can be determined whether there is a large abnormality in a certain unit length of the wire rope during use. Then, 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 its use and causes losses, and at the same time, avoid safety hazards caused by wire rope breakage during use.

[0081] Embodiment 2

[0082] Reference Figure 2 As shown, based on the above embodiment, the wire rope change performance value ZTBB at the current monitoring time e in this embodiment is 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 and obtain 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 the 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 ; 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;

[0090] By monitoring and calculating the changes of each section of the 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 wire rope cross-sectional diameter value 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 performance value JMY of the wire rope cross section e ;

[0092] It should be noted that the wire rope cross-sectional diameter value is marked as DJD (e，i) The minimum value of the cross-sectional diameter of the steel wire rope on each unit length of the steel wire rope 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) They are compared 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 standard value JMCZ of the cross-sectional difference of segment i at the current monitoring time e e ;

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

[0100] Monitor the cross-sectional diameter of each unit length of the wire rope, and further obtain the abnormal cross-sectional change performance value of the wire rope. The smaller the abnormal cross-sectional 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 time e e .

[0103] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation 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 and obtain the wire rope length change performance value SBX at the current monitoring time e e ; A2: Get the wire rope cross-sectional diameter value 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 performance value JMY of the wire rope cross section 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 ; By ZTBB e =SBX e +JMY e Calculate the wire rope change performance value ZTBB at the current monitoring time e e ; The wire rope change performance value ZTBB at the current monitoring time e e Compare with the extreme value ZTBBy of the wire rope change performance; obtain the stable signal of the wire rope change; Based on the stable signal of wire rope change, the maximum single wire breakage ratio SLBmax of 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 performance rate SBL is calculated e ; and compare it with the threshold value SBLy of the whole single wire breakage; obtain the wire rope early warning signal or 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 steel wire rope total length value LZ and the steel wire rope single wire number value 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, ...; Take unit time T as monitoring period and obtain the real-time value DJD of the wire rope length at the current monitoring time 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 Less than or equal to the wire rope length change ratio threshold LBy, generating a wire rope total length stability signal; 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 length variation performance value SBX e The calculation method is: 011: Pass Calculate the unit length change rate BDB of each section of the 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 ; 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.

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

6. A wire rope life monitoring method according to claim 1, characterized in that: 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) They are compared 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: 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) ; 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 standard value JMCZ of the cross-sectional difference of segment i at the current monitoring time e e ; 024: Pass Calculate the abnormal cross-sectional change performance value JMY of the wire rope at the current monitoring time e e .

7. A wire rope life monitoring method according to claim 1, characterized in that: 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; If the wire rope changes the performance value ZTBB e If it is greater than or equal to the extreme value ZTBBy of the wire rope change, an abnormal wire rope change signal is generated; If the wire rope changes the performance value ZTBB e When it is smaller than the extreme value ZTBBy of the wire rope variation, a stable wire rope variation signal is generated.

8. 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 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) ; 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 previous monitoring time e, recorded as SLBmax e ; The maximum single-filament breakage ratio SLBmax e Compared with the wire rope breakage extreme value ratio SLBJ: If the single fiber breakage ratio is the maximum SLBmax e Greater than or equal to the wire rope break extreme value ratio SLBJ, generating a break signal; If the single fiber breakage ratio is the maximum SLBmax e When the wire rope breakage limit ratio SLBJ is smaller than that, a full-section monitoring signal is generated.

9. A wire rope life monitoring method according to claim 1, characterized in that: The whole-segment single-filament breakage performance rate SBL e The calculation method is: Get the single wire breaking 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 value of the single-filament breakage ratio SLJ is denoted as m; Then pass Calculate the single-filament breakage rate SBL of the entire wire rope e .

10. A wire rope life monitoring method according to claim 9, characterized in that: The whole-segment single-filament breakage rate SBL e Compared with the whole-segment single-filament breakage performance threshold SBLy; If the whole segment single fiber breakage rate SBL e When the wire rope 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 When the value is greater than the threshold value SBLy for the breakage of the entire single wire, a wire rope risk signal is generated.

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