Yongmao STT113, Operation & Service Manual

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STT113 TOWER CRANE OPERATION AND SERVICE MANUAL
10B-1
CHAPTER FIXING AND TESTING RULES FOR WIRE ROPE
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I. Explanation
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II. Fitting wire rope ························································· 10B-2
1.
Fitting new wire rope
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III. Maintenance ····························································· 10B-4
IV. Inspection
1
. Daily observation ····················································· 10B-4
2.
Periodical inspection by person in charge
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V. Inspection Places
1. General Inspecting places ············································ 10B-5
2. Inspecting places on drum ··········································· 10B-5
3.Checking places around crown block and fixed-points ········· 10B-6
4. Internal Checking on wire rope ····································· 10B-7
5. Inspecting places at the end of wire rope ·························· 10B-7
VI. The discard as useless standard of rope
1.The quality and quantity of broken rope ···························· 10B-8
2. Rope end broken wire ················································ 10B-9
3. Broken wire part collection ·········································· 10B-9
4. Broken wire increase rate ············································ 10B-9
5. Wire of rope breaking down ········································· 10B-9
6.Rope diameter decrease due to the core of rope break down. ··· 10B-9
7. Flexibility decrease ··················································· 10B-10
8. Outside and inside attrition ·········································· 10B-10
9. Outside and inside corrosion ········································ 10B-11
10. distortion ······························································ 10B-11
11.The vitiate resulting by heat or electric arc effect ················ 10B-11
VII. Equipment condition for Relevant rope ························ 10B-12
APPENDIX: COMMON WIRE ROPE DEFECTS