Construction crane main components and wearing parts scrap standards;
(1) The main force-carrying parts of the electric hanging basket: suspension mechanism and suspension platform shall be scrapped when the following conditions occur.
1, can not be repaired after the overall instability.
2. When permanent deformation occurs and it cannot be repaired.
(3) When some components are permanently deformed and cannot be repaired and the surface corrosion or wear depth exceeds 10% of the original component, the corresponding components should be scrapped.
4. When there are cracks in structural parts and their welds, they may be repaired or reinforced before they can meet the original design requirements after repairs or reinforcement measures, depending on the stress conditions and cracks. Otherwise, they should be used. scrapped.
(2) The relevant standards for the retirement of steel wire ropes GB5972-86 "Practical Codes for Inspection and Disposal of Wire Ropes Used in Hoisting Machinery" shall be implemented, and shall be scrapped when the following circumstances occur.
1. The steel wire rope used in the construction basket must be scrapped when it breaks three wires within 5 centimeters or breaks six wires within 25 centimeters. If the wire rope is of sufficient length, it must be cut off before it can be re-installed.
2. When the wire rope wear amount reaches 7%, it must be scrapped.
3, steel wire rope loosening, kink, bending, local distortion, some strands or wire extrusion, etc., should be immediately scrapped.
4. Wire ropes are subjected to arcing and should be scrapped when a recognizable colour appears on the surface. Basket rental
(3) When the rubber sleeve of the cable is seriously damaged and has directly affected the strength and insulation safety, it shall be scrapped.
(4) When the abrasion loss of the friction plate of the electromagnetic clutch in the hoist reaches 2.5 mm, it shall be discarded when it is scrapped or unevenly worn and cannot be repaired.
(five construction baskets) The manual landing of the suspension platform exceeds 14 m/min. The brake block assembly of the centrifugal limiter on the motor end of the hoist shall be scrapped.
(1) The main force-carrying parts of the electric hanging basket: suspension mechanism and suspension platform shall be scrapped when the following conditions occur.
1, can not be repaired after the overall instability.
2. When permanent deformation occurs and it cannot be repaired.
(3) When some components are permanently deformed and cannot be repaired and the surface corrosion or wear depth exceeds 10% of the original component, the corresponding components should be scrapped.
4. When there are cracks in structural parts and their welds, they may be repaired or reinforced before they can meet the original design requirements after repairs or reinforcement measures, depending on the stress conditions and cracks. Otherwise, they should be used. scrapped.
(2) The relevant standards for the retirement of steel wire ropes GB5972-86 "Practical Codes for Inspection and Disposal of Wire Ropes Used in Hoisting Machinery" shall be implemented, and shall be scrapped when the following circumstances occur.
1. The steel wire rope used in the construction basket must be scrapped when it breaks three wires within 5 centimeters or breaks six wires within 25 centimeters. If the wire rope is of sufficient length, it must be cut off before it can be re-installed.
2. When the wire rope wear amount reaches 7%, it must be scrapped.
3, steel wire rope loosening, kink, bending, local distortion, some strands or wire extrusion, etc., should be immediately scrapped.
4. Wire ropes are subjected to arcing and should be scrapped when a recognizable colour appears on the surface. Basket rental
(3) When the rubber sleeve of the cable is seriously damaged and has directly affected the strength and insulation safety, it shall be scrapped.
(4) When the abrasion loss of the friction plate of the electromagnetic clutch in the hoist reaches 2.5 mm, it shall be discarded when it is scrapped or unevenly worn and cannot be repaired.
(five construction baskets) The manual landing of the suspension platform exceeds 14 m/min. The brake block assembly of the centrifugal limiter on the motor end of the hoist shall be scrapped.
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