What are the general inspection methods for steel wire rope?

I. Inspection position

（1） Full length part

1. the starting end of the steel wire rope, the rope section close to the connecting device, is the frequent dragging point of the hook head.

2. the end of the steel wire rope, at the intersection of no movement and movement on the drum, is the frequent braking point.

3. bypass the rope section of pulley or crown wheel.

4. rope section at fixed pulley position.

5. rope sections that are prone to corrosion due to heavy watering.

6. middle section of steel wire rope.

（2） Hook head

1. check the fixed end of the connecting device, which is prone to fatigue, broken wire and corrosion.

2. check the connecting device itself to see whether the rope clamp is fastened and whether the distance reaches 6-8 times the diameter of the steel wire rope.

3. generally, there are 4 wire rope clamps, and the last wire rope is reserved with a safety ring. If the safety ring is straightened, it indicates that the wire rope clamp is loose.

Wire rope inspection

II. Inspection cycle

The general inspection cycle shall be divided into daily inspection, weekly inspection and monthly inspection.

Daily inspection means that the operator and the wire rope inspector shall inspect the wire rope once a day during shift handover to check the damage of the wire rope.

The weekly inspection is a detailed inspection conducted by the technicians of the affiliated team and wire rope inspectors every week to comprehensively analyze the daily inspection records within a week and focus on troubleshooting the hidden dangers of wire rope.

Monthly inspection means that the technical director of the competent department organizes the business personnel of the Department, the technical director of the team level, the steel wire rope inspector and the operation driver to conduct a detailed and comprehensive inspection every month, analyze the operation and inspection contents of the steel wire rope in a month, analyze the hidden dangers and develop rectification measures.

III. Inspection contents

1. check the wear degree and measure the diameter of steel wire rope at each wear part.

2. check the broken wires, the number of broken wires and the distribution of broken wires.

3. check the degree of corrosion and whether there is corrosion on the surface and inside.

4. check the lubrication and grease loss of steel wire rope,

5. check the loose twisting degree and position of the rope strands, and measure the lay distance at the loose twisting position.

6. check the deformation position, such as the twisting trace, flattened concave, outer strand, exposed rope core, etc.

IV. Measurement method

1. the steel wire rope inspector uses an oil standard caliper to measure the diameter of the steel wire rope. The measurement method is to measure the outer diameter of two strands of the steel wire rope. The middle section should be a measuring point every 100m, and two measuring points should be measured at the front and rear 1m respectively. The minimum diameter should be recorded and compared with the factory measured diameter of the new steel wire rope. The measuring points should be replaced every month to achieve monthly fixation and comparative analysis.

2. compare the measured value of the lay distance in the steel wire rope strand with the factory measured lay distance of the new steel wire rope to determine the degree of loose lay.

V. Special provisions

When the steel wire rope is subjected to strong tension such as tank jamming and sudden stop during operation, it shall be stopped immediately for inspection.

Vi. Job requirements

1. the technicians of each team to which the steel wire rope belongs shall formulate the steel wire rope management system for different purposes, which shall be reviewed by the relevant leaders of the team and submitted to the leader of the competent department for approval.

2. the daily inspection, weekly inspection and monthly inspection shall be compared with the scrap standard to determine whether the inspection results are qualified, which shall be reviewed by the team leader, team technician and section level person in charge respectively.

3. the subordinate team shall summarize the inspection of steel wire rope every month and report it to the competent leader of the company.