GB 9075-1988 Specification for inspection and scrapping of steel wire ropes for aerial ropeways
Some standard content:
National Standard of the People's Republic of China
Wire rope for aerial ropeways-Code for examination and discard1 Subject content and scope of application
1.1 This code specifies the installation, inspection, maintenance and discarding standards for wire ropes for aerial ropeways. UDC 677.72.004.72
：622.625.5
GB9075—88
1.2 This code applies to wire ropes for single-line circulating, double-line circulating and reciprocating passenger and freight aerial ropeways, and does not apply to wire ropes for temporary freight ropeways and forestry ropeways
1.3 The working life of the wire rope varies with the working conditions and uses of the aerial ropeway, and its design selection should comply with relevant national standards. 1.4 In the provisions of this specification, if "freight ropeway" or "passenger ropeway" is not specifically specified, it is applicable to both. If it is not specifically stated as "load-bearing rope", "load-bearing traction rope", "traction rope", "balance rope" or "tension rope", it is applicable to all five types of wire ropes. 2 Reference standards
GB1102 Round strand wire rope
GB1200 Galvanized steel strand
GB5972 Practical specification for inspection and scrapping of wire ropes for cranes 3 Wire ropes
3.1 Condition before installation
3.1.1 After the arrival of the wire rope and during the installation process, the user shall inspect and accept it according to the technical standards of the wire rope or the relevant matters in the contract. The diameter, structure, surface and twisting of the wire rope, as well as the quality of the rope core and packaging, shall be checked. The steel wire should not have broken wires, staggered, bent, rusted or cut; the rope strands should not have defects such as uneven tightness, collapse and bulge, and the fiber core should not be dry or rotten. 3.1.2 The replacement wire rope should be of the same type and specification as the original installed wire rope. If a different type of wire rope is used, the user should ensure that the performance of the replacement wire rope is not lower than the original wire rope and is compatible with the gripper jaws, rope grooves and other related elements. 3.1.3 If the required wire rope is cut from a longer wire rope, the cut should be prevented from being loose. 3.1.4 Product quality certificates and inspection records must be properly kept. 3.2 Installation
3.2.1 During the installation process, the wire rope should be prevented from being looped, tangled, bent, and stuck with debris and rubbed on hard objects. It is strictly forbidden to soak it in water.
3.2.2 The load-bearing rope of the passenger ropeway is not allowed to have an intermediate joint. 3.2.3 The joint braiding length of the traction rope and load-bearing traction rope of the passenger ropeway shall not be less than 1200d (d-wire rope diameter), and the diameter increase shall not exceed 5%d.
3.2.4 The length of the joints of the traction rope and the load-bearing traction rope of the freight ropeway shall not be less than 1000d, and the increase in diameter shall not exceed 6%d.
Approved by the State Machinery Industry Commission on March 31, 1988
Implemented on January 1, 1989
3.3 Inspection
3.3.1 Inspection cycle
3.3.1.1 Daily inspection
GB 9075--88
Observe the visible parts of the wire rope every working day to detect damage and deformation in time. 3.3.1.2 Monthly inspection
Visual inspection of the wire rope shall be carried out at least once a month. In case of special circumstances (such as lightning strike, rope skipping and strong tension), visual inspection shall be carried out immediately. In case of fatigue fracture and other abnormal conditions, additional inspection shall be carried out. If the cause is clear, the inspection cycle can be shortened according to the inspection results.
3.3.2 Monthly Inspection
3.3.2.1 Visual inspection is carried out during the day, and observation is made from both sides of the wire rope at the same time. The speed during visual inspection shall not exceed 0.5m/s. The inspection results shall be recorded and kept properly.
3.3.2.2 During inspection, only mechanical methods that do not damage the wire rope are allowed to remove grease and dirt on the surface of the wire rope. 3.3.2.3 Non-destructive testing can be used instead of visual inspection. Visual inspection is also required for parts with relatively large forces (saddles, rope wheels, etc.) or parts that have been damaged. 3.3.3 Non-destructive Testing
3.3.3.1 Non-destructive testing must be carried out for wire ropes used for passenger ropeways. The first inspection must be carried out within 18 months after the installation of the wire rope, and the inspection results shall serve as the basis for subsequent inspections. The second and subsequent inspection cycles shall be determined by the safety supervision department, and the inspection results shall be recorded and filed. 3.3.3.2 After the load-bearing rope of the passenger ropeway is swayed, non-destructive testing should be carried out. 3.3.3.3 For the load-bearing rope of the freight ropeway with a service life of more than 4 years and involving personal safety, non-destructive testing should be carried out. 3.3.4 Inspection parts
When inspecting the wire rope in full length, special attention should be paid to the following parts: load-bearing rope: inclined saddle, swing saddle, line sleeve, transition sleeve, terminal device, etc.; traction rope, load-bearing traction rope; joints, both ends of the fixed rope gripper, tension rope: alloy casting sleeve, guide wheel upper and lower running part; balance rope: guide wheel upper and lower running part. 3.3.5 Internal inspection
The method of internal inspection can be referred to Appendix A, and the inspection results should be recorded. 3.4 Maintenance
3.4.1 The maintenance of the wire rope should be determined according to the purpose of the aerial ropeway, the working environment and the type of wire rope. Where possible, especially the parts that are subjected to bending, they should be cleaned and lubricated with oil or grease in a timely manner (unless otherwise specified by the wire rope manufacturer). 3.4.2 The wire rope should be lubricated at least twice a year. 3.4.3 Before lubrication, remove the dirt on the surface of the wire rope. If there is dew and frost on the surface of the wire rope, lubrication can be carried out after the dew and frost are cleaned. It is not allowed to add too much grease during lubrication, and solvents are not allowed. 3.4.4 Sealed wire ropes are allowed to be repaired if they are damaged due to cracking of welding points, lightning strikes, etc.; if they are damaged due to fatigue, they are not allowed to be repaired. 3.4.5 The distance between the repair points must be greater than 3000d. When the number of steel wires to be repaired for sealed wire ropes is 1 to 3, the length of the replaced steel wire must be greater than 300d.
For load-bearing traction ropes, if the broken wires gather at the joints, they can be disconnected and reconnected if the rope length allows; if they gather elsewhere, they can be disconnected and reconnected, but the total number of braided joints shall not exceed two. For the traction rope and balance rope of reciprocating passenger ropeway, braided joints are usually not allowed. 3.4.6 When the external broken wires of the load-bearing rope of the freight ropeway exceed two within the rope length of 6d, it must be protected by a splint. 3.5 Scrap standard
The scrapping or partial replacement of the wire rope is determined by the following items: a. Reduction of the cross section;
Local accumulation of broken wires;
Breakage of rope strands;
d. Increase rate of broken wires.
GB9075-88
If the damage of the wire rope is caused by defects in the mechanism components, these defects should be eliminated before replacing the wire rope. 3.5.1 Reduction of section Within the relevant length L (multiples of d), the ratio of the reduction of the load-bearing section of the wire rope to the load-bearing section of the wire rope (expressed in percentage) shall not exceed the value in Table 1. When determining the reduction of section, the following should be considered: a. Wire rope Load-bearing rope Moving rope Tensioning rope Number of broken wires; Internal and external wear; Internal and external corrosion; Damage caused by other reasons.
Table 1 Allowable Sectional Reduction Values of Wire Ropes
Passenger Case Road
Wire Rope Structure
Sealed Steel Wire
Rope and Semi-closed
Sealed Steel Wire Rope
Strand-twisted Steel
Strand-twisted Steel
Freight Ropeway
Note: ①The values in column 1 of the table are applicable to uniform damage, the values in column 2 are applicable to local damage caused by normal operating loads: the values in column 3 are applicable to limited damage caused by abnormal influences. ②The values in the table are applicable to the same-direction-laid wire ropes. If the wire rope is an alternating-lay wire rope, the percentage values in the table are allowed to be increased by 50%. 3.5.1.1 Number of broken wires
The number of external broken wires allowed when the wire rope has no other defects can be determined based on the allowable reduction of the metal section and the external wire section
If a wire has multiple breaks within the relevant length, it will be counted as only one break; hair-like cracks in the wire due to local hardening (martensite formation) should also be considered as broken wires. 3.5.1.2 Internal and external wear
Internal wear and pitting: This damage is caused by the friction between the strands and wires in the wire rope. External wear: Under pressure, the wire rope contacts and rubs with the support (pressure) rope wheel, saddle, drive wheel, and guide wheel rope groove, causing the outer strands and wires of the wire rope to wear on the surface, making the outer wires grinded into a flat surface. Insufficient lubrication, or incorrect lubrication, as well as dust and sand particles will aggravate the wear.
Wear leads to a reduction in the cross-section and strength of the wire rope. The allowable value of cross-section reduction is shown in Table 1. 3.5.1.3 Internal and external corrosion
Internal corrosion is difficult to detect, but can be identified by the following phenomena: a.
The diameter of the wire rope usually decreases when it passes around the bend of the pulley; the gap between the outer strands decreases, and it is often accompanied by broken wires between the outer strands. GB 9075 --88
The corrosion of the external wire can be directly observed for pitting. Corrosion reduces the load-bearing cross-section of the wire rope. The allowable cross-section reduction value is shown in Table 1. 3.5.1.4 Damage caused by other reasons If the wire rope is damaged due to other reasons, the wire and rope strands become loose, the structure changes, and the performance of the wire rope is weakened, the cross-section reduction value should also be calculated. If it exceeds the value in Table 1, the passenger rope rope should be scrapped, and the freight rope rope can be partially replaced or scrapped. 3.5.2 Local aggregation of broken wires
If the broken wires are close together to form a local aggregation, and are located within the rope length of less than 6d or concentrated in one strand, the passenger rope rope should be scrapped, and the freight rope rope can be partially replaced or scrapped. 3.5.2.1 If there are two breaks in the adjacent special-shaped wires of the passenger ropeway sealed wire rope within a length of 18d, although the cross-section reduction does not exceed the value in the table, it should also be scrapped.
3.5.2.2 If the moving rope (traction rope, balance rope, load-bearing traction rope) of the passenger ropeway has more than 35% of the cross-section broken wire in a rope strand within a length of 6 days, it should be scrapped.
3.5.3 Rope strand breakage
If the entire rope strand breaks, the steel wire rope for passenger ropeway must be scrapped, and the steel wire rope for freight ropeway must be partially replaced or scrapped. 3.5.4 Increase rate of broken wires
In some use occasions, fatigue is the main cause of wire rope damage, and broken wires begin to appear after a period of use, but the number of broken wires gradually increases, and the time interval is getting shorter and shorter. In this case, in order to determine the increase rate of broken wires, the increase of broken wires should be carefully checked and recorded, and the law should be found out, and the date of scrapping or partial replacement of the steel wire rope should be determined based on this. 4 Processing of steel wire rope usage information
Based on the correct record of relevant information made by the inspector, the effective performance of a given type of steel wire rope on the aerial ropeway can be predicted. This information can be used to adjust maintenance procedures and control the inventory of spare wire ropes; however, such predictions cannot be used to relax inspections or extend the service life beyond the conditions specified in this specification. 5 Wire Rope Inspection Records
The user should make careful and detailed records of each periodic inspection. Typical examples of inspection records are shown in Appendix B. 6 Storage and Identification of Wire Ropes
6.1 Wire ropes should be stored in a ventilated and dry room, protected from direct sunlight and hot air, and the ground on which they are placed should be raised by more than 300mm. 6.2 When wire ropes are stacked outdoors, they are strictly prohibited from direct contact with the ground, and a shed and covering should be built for protection. 6.3 It is recommended that if the storage time is long, an appearance inspection should be carried out once a year. If the wire rope is found to be rusted, it should be unwound for inspection, rust removed, and rewound after oiling. If the situation is serious, it should be handled in a timely manner. 6.4 The storage period of non-metallic core wire ropes is 6 years. In principle, there is no storage period for metal core wire ropes. 6.5 The wire rope should be clearly identified based on the inspection records. 791
GB 9075-88
Appendix A
Internal inspection of wire rope
(Supplement)
Internal damage of wire rope is mainly caused by corrosion and normal fatigue. The extent of internal damage may not be found by normal external inspection, so internal inspection is necessary.
Internal inspection shall be carried out by competent personnel. A1 Scope of inspection
All types of stranded wire ropes can be fully loosened to assess their internal conditions. This is more difficult for thick wire ropes. However, internal inspection can be carried out as long as the tension of the wire rope for aerial ropeway is zero. A2 Inspection method
Securely clamp two clamps of appropriate size onto the wire rope at a certain distance apart. Apply a force to the clamps in the opposite direction of the wire rope lay, and the outer rope strands will spread out and separate from the rope core (see Figure A1). Do not let the clamps slip around the wire rope. The displacement of each strand should not be too large.
Figure A1 Internal inspection of a continuous wire rope (zero tension) When the wire rope is slightly unwound, a small probe can be used to remove grease or debris that hinders observation of the inside of the wire rope. The main contents to be observed are:
internal lubrication state;
b. corrosion degree;
wire indentation caused by extrusion or wear; d. presence of broken wires.
After the inspection, put some maintenance oil in the unwound part and turn the clamp with moderate force to properly reset the rope strands around the rope core. After removing the clamp, the outer surface of the wire rope should be coated with grease. A3 Inspection of wire rope section near the rope end
Inspection of the wire rope in this part only requires the use of a single clamp and a way to fix the end to carry out the inspection (see Figure A2). 792
A4 Inspection part
Refer to 3.3.4.
GB9075-88
Figure A2 Internal inspection of the tail of the wire rope near the rope end device (tension is zero) 793
Equipment name:
Structure:
Wire rope lay direction: right-handed/left-handed
Twist direction type: cross-twist/same-direction lay
Nominal diameter:
Nominal tensile strength:
Surface quality: non-galvanized/galvanized
Rope core type: steel/fiber/synthetic pre-formed:
Rope end fixing type:
Manufacturing number:
Quality certificate number:
Within 20d
Handling opinion:
Other observations:
Within 30d
Within 40d
GB 9075—88
Appendix B
Typical example of inspection record
(reference)
Purpose:
Wire rope data sheet
Scrap date:
Minimum breaking load:
Working load:
Measured true diameter:
After bearing
Load borne during measurement:
Rope making width
Minimum, %
Within 180d
Within 200d
Date:
Within 500d
Working hours:
Reason for scrapping:
Note: Users can add necessary items according to local actual conditions. Additional remarks:
This standard is under the jurisdiction of Beijing Hoisting and Conveying Machinery Research Institute. This standard was drafted by the Beijing Hoisting and Conveying Machinery Research Institute. 794
Damage and deformation
Measurement location
Signature:
Overall evaluation
Degree of damage3. Rope strand breakage
If the entire rope strand breaks, the steel wire rope for passenger ropeway must be scrapped, and the steel wire rope for freight ropeway must be partially replaced or scrapped. 3.5.4 Increase rate of broken wires
In some applications, fatigue is the main cause of wire rope damage, and broken wires begin to appear after a period of use, but the number of broken wires gradually increases, and the time interval is getting shorter and shorter. In this case, in order to determine the increase rate of broken wires, the increase of broken wires should be carefully checked and recorded to find out the rules, and the date of scrapping or partial replacement of the wire rope should be determined. 4. Processing of wire rope usage information
Based on the correct record of relevant information made by the inspector, the effective performance of a given type of wire rope on the aerial ropeway can be predicted. This information can be used to adjust the maintenance procedure and control the inventory of spare wire ropes; but the inspection cannot be relaxed or the service life extended beyond the conditions specified in this specification due to such prediction. 5 Inspection records of wire ropes
Users should make careful and detailed records of each regular inspection. Typical examples of inspection records are shown in Appendix B. 6 Storage and identification of wire ropes
6.1 Wire ropes should be stored in a ventilated and dry room to prevent direct sunlight and hot air from baking. The ground on which they are placed should be raised by more than 300mm. 6.2 When wire ropes are piled outdoors, they are strictly prohibited from direct contact with the ground, and a shed and covering materials should be built for protection. 6.3 It is recommended that if the storage time is long, an appearance inspection should be carried out once a year. If the wire rope is found to be rusted, it should be unwound for inspection, rust removal, oiling and rewinding. If the situation is serious, it should be handled in time. 6.4 The storage period of non-metallic core wire ropes is 6 years. In principle, there is no storage period for metal core wire ropes. 6.5 The wire rope should be clearly identified based on the inspection records. 791
GB 9075-88
Appendix A
Internal inspection of wire rope
(Supplement)
Internal damage of wire rope is mainly caused by corrosion and normal fatigue. The extent of internal damage may not be found by normal external inspection, so internal inspection is necessary.
Internal inspection shall be carried out by competent personnel. A1 Scope of inspection
All types of stranded wire ropes can be fully loosened to assess their internal conditions. This is more difficult for thick wire ropes. However, internal inspection can be carried out as long as the tension of the wire rope for aerial ropeway is zero. A2 Inspection method
Securely clamp two clamps of appropriate size onto the wire rope at a certain distance apart. Apply a force to the clamps in the opposite direction of the wire rope lay, and the outer rope strands will spread out and separate from the rope core (see Figure A1). Do not let the clamps slip around the wire rope. The displacement of each strand should not be too large.
Figure A1 Internal inspection of a continuous wire rope (zero tension) When the wire rope is slightly unwound, a small probe can be used to remove grease or debris that hinders observation of the inside of the wire rope. The main contents to be observed are:
internal lubrication state;
b. corrosion degree;
wire indentation caused by extrusion or wear; d. presence of broken wires.
After the inspection, put some maintenance oil in the unwound part and turn the clamp with moderate force to properly reset the rope strands around the rope core. After removing the clamp, the outer surface of the wire rope should be coated with grease. A3 Inspection of wire rope section near the rope end
Inspection of the wire rope in this part only requires the use of a single clamp and a way to fix the end to carry out the inspection (see Figure A2). 792
A4 Inspection part
Refer to 3.3.4.
GB9075-88
Figure A2 Internal inspection of the tail of the wire rope near the rope end device (tension is zero) 793
Equipment name:
Structure:
Wire rope lay direction: right-handed/left-handed
Twist direction type: cross-twist/same-direction lay
Nominal diameter:
Nominal tensile strength:
Surface quality: non-galvanized/galvanized
Rope core type: steel/fiber/synthetic pre-formed:
Rope end fixing type:
Manufacturing number:
Quality certificate number:
Within 20d
Handling opinion:
Other observations:
Within 30d
Within 40d
GB 9075—88
Appendix B
Typical example of inspection record
(reference)
Purpose:
Wire rope data sheet
Scrap date:
Minimum breaking load:
Working load:
Measured true diameter:
After bearing
Load borne during measurement:
Rope making width
Minimum, %
Within 180d
Within 200d
Date:
Within 500d
Working hours:
Reason for scrapping:
Note: Users can add necessary items according to local actual conditions. Additional remarks:
This standard is under the jurisdiction of Beijing Hoisting and Conveying Machinery Research Institute. This standard was drafted by the Beijing Hoisting and Conveying Machinery Research Institute. 794
Damage and deformation
Measurement location
Signature:
Overall evaluation
Degree of damage3. Rope strand breakage
If the entire rope strand breaks, the steel wire rope for passenger ropeway must be scrapped, and the steel wire rope for freight ropeway must be partially replaced or scrapped. 3.5.4 Increase rate of broken wires
In some applications, fatigue is the main cause of wire rope damage, and broken wires begin to appear after a period of use, but the number of broken wires gradually increases, and the time interval is getting shorter and shorter. In this case, in order to determine the increase rate of broken wires, the increase of broken wires should be carefully checked and recorded to find out the rules, and the date of scrapping or partial replacement of the wire rope should be determined. 4. Processing of wire rope usage information
Based on the correct record of relevant information made by the inspector, the effective performance of a given type of wire rope on the aerial ropeway can be predicted. This information can be used to adjust the maintenance procedure and control the inventory of spare wire ropes; but the inspection cannot be relaxed or the service life extended beyond the conditions specified in this specification due to such prediction. 5 Inspection records of wire ropes
Users should make careful and detailed records of each regular inspection. Typical examples of inspection records are shown in Appendix B. 6 Storage and identification of wire ropes
6.1 Wire ropes should be stored in a ventilated and dry room to prevent direct sunlight and hot air from baking. The ground on which they are placed should be raised by more than 300mm. 6.2 When wire ropes are piled outdoors, they are strictly prohibited from direct contact with the ground, and a shed and covering materials should be built for protection. 6.3 It is recommended that if the storage time is long, an appearance inspection should be carried out once a year. If the wire rope is found to be rusted, it should be unwound for inspection, rust removal, oiling and rewinding. If the situation is serious, it should be handled in time. 6.4 The storage period of non-metallic core wire ropes is 6 years. In principle, there is no storage period for metal core wire ropes. 6.5 The wire rope should be clearly identified based on the inspection records. 791
GB 9075-88
Appendix A
Internal inspection of wire rope
(Supplement)
Internal damage of wire rope is mainly caused by corrosion and normal fatigue. The extent of internal damage may not be found by normal external inspection, so internal inspection is necessary.
Internal inspection shall be carried out by competent personnel. A1 Scope of inspection
All types of stranded wire ropes can be fully loosened to assess their internal conditions. This is more difficult for thick wire ropes. However, internal inspection can be carried out as long as the tension of the wire rope for aerial ropeway is zero. A2 Inspection method
Securely clamp two clamps of appropriate size onto the wire rope at a certain distance apart. Apply a force to the clamps in the opposite direction of the wire rope lay, and the outer rope strands will spread out and separate from the rope core (see Figure A1). Do not let the clamps slip around the wire rope. The displacement of each strand should not be too large.
Figure A1 Internal inspection of a continuous wire rope (zero tension) When the wire rope is slightly unwound, a small probe can be used to remove grease or debris that hinders observation of the inside of the wire rope. The main contents to be observed are:
internal lubrication state;
b. corrosion degree;
wire indentation caused by extrusion or wear; d. presence of broken wires.
After the inspection, put some maintenance oil in the unwound part and turn the clamp with moderate force to properly reset the rope strands around the rope core. After removing the clamp, the outer surface of the wire rope should be coated with grease. A3 Inspection of wire rope section near the rope end
Inspection of the wire rope in this part only requires the use of a single clamp and a way to fix the end to carry out the inspection (see Figure A2). 792
A4 Inspection part
Refer to 3.3.4.
GB9075-88
Figure A2 Internal inspection of the tail of the wire rope near the rope end device (tension is zero) 793
Equipment name:
Structure:
Wire rope lay direction: right-handed/left-handed
Twist direction type: cross-twist/same-direction lay
Nominal diameter:
Nominal tensile strength:
Surface quality: non-galvanized/galvanized
Rope core type: steel/fiber/synthetic pre-formed:
Rope end fixing type:
Manufacturing number:
Quality certificate number:
Within 20d
Handling opinion:
Other observations:
Within 30d
Within 40d
GB 9075—88
Appendix B
Typical example of inspection record
(reference)
Purpose:
Wire rope data sheet
Scrap date:
Minimum breaking load:
Working load:
Measured true diameter:
After bearing
Load borne during measurement:
Rope making width
Minimum, %
Within 180d
Within 200d
Date:
Within 500d
Working hours:
Reason for scrapping:
Note: Users can add necessary items according to local actual conditions. Additional remarks:
This standard is under the jurisdiction of Beijing Hoisting and Conveying Machinery Research Institute. This standard was drafted by the Beijing Hoisting and Conveying Machinery Research Institute. 794
Damage and deformation
Measurement location
Signature:
Overall evaluation
Degree of damage4.
GB9075-88
Figure A2 Internal inspection of the tail of the wire rope near the rope end device (tension is zero) 793
Equipment name:
Structure:
Wire rope lay direction: right grab/left grab
Twist direction type: cross twist/same direction twist
Nominal diameter:
Nominal tensile strength:
Surface quality: non-galvanized/galvanized
Rope core type: steel/fiber/synthetic pre-formed:
Rope end fixing type:
Manufacturing number:
Quality certificate number:
Within 20d
Handling opinion:
Other observations:
Within 30d
Within 40d
GB 9075—88
Appendix B
Typical example of inspection record
(reference)
Purpose:
Wire rope data sheet
Scrap date:
Minimum breaking load:
Working load:
Measured true diameter:
After bearing
Load borne during measurement:
Rope making width
Minimum, %
Within 180d
Within 200d
Date:
Within 500d
Working hours:
Reason for scrapping:
Note: Users can add necessary items according to local actual conditions. Additional remarks:
This standard is under the jurisdiction of Beijing Hoisting and Conveying Machinery Research Institute. This standard was drafted by the Beijing Hoisting and Conveying Machinery Research Institute. 794
Damage and deformation
Measurement location
Signature:bzxz.net
Overall evaluation
Degree of damage4.
GB9075-88
Figure A2 Internal inspection of the tail of the wire rope near the rope end device (tension is zero) 793
Equipment name:
Structure:
Wire rope lay direction: right grab/left grab
Twist direction type: cross twist/same direction twist
Nominal diameter:
Nominal tensile strength:
Surface quality: non-galvanized/galvanized
Rope core type: steel/fiber/synthetic pre-formed:
Rope end fixing type:
Manufacturing number:
Quality certificate number:
Within 20d
Handling opinion:
Other observations:
Within 30d
Within 40d
GB 9075—88
Appendix B
Typical example of inspection record
(reference)
Purpose:
Wire rope data sheet
Scrap date:
Minimum breaking load:
Working load:
Measured true diameter:
After bearing
Load borne during measurement:
Rope making width
Minimum, %
Within 180d
Within 200d
Date:
Within 500d
Working hours:
Reason for scrapping:
Note: Users can add necessary items according to local actual conditions. Additional remarks:
This standard is under the jurisdiction of Beijing Hoisting and Conveying Machinery Research Institute. This standard was drafted by the Beijing Hoisting and Conveying Machinery Research Institute. 794
Damage and deformation
Measurement location
Signature:
Overall evaluation
Degree of damage
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