Container quayside crane
Note: Line contact steel wire rope, surface contact steel wire rope, or surface contact plastic filled steel wire rope with core are preferred for the lifting, spoke changing, and traction mechanisms of the shore bridge.
The widely used structural forms include:
6X36WS+IWRC, 6X29F+IWRC, 6X31WS+IWRC, 8X26WS+IWRC or corresponding compacted strand ropes, oiled using port machinery
Special grease.
Note: Some docks also use compacted strand steel wire ropes corresponding to the above mechanisms.
Note: The operating frequency, load condition, lubrication condition, selection of steel wire rope, and the ratio of pulley diameter to steel wire rope diameter of the ship unloader are the main factors that affect the service life of the steel wire rope on the ship unloader. Attention should be paid to the matching between the steel wire rope and the ship unloader based on the working environment and equipment performance, the failure form of the steel wire rope, and the selection of the ship unloader. The steel core wire contact wire rope generally adopts structures such as 6x36WS+IWRC, 6x29F+IWRC, and 8X36WS+IWRC/8XK36WS+IWRC, which is the main wire rope structure used for domestic ship unloaders. Refer to the above for the structural diagram of the steel wire rope.
The contact state between the wire rope and the strand, as well as the hardness of the pulley groove, should be selected for unloading
Selection,Installation,and Maintenance of Steel Wire Rope
1.Selection of Wire Rope
Refer to GB8918-2006"Steel wire ropes for important purposes"and GB/T20018-2006"Steel wire ropes for general purposes"on how to select from different constructions of wire rope.Please also refer to this section of our product catalogue in selecting wire rope.We suggest choosing equal lay
steel wire rope,Compacted wire rope for general usage.The technical parameters such as lifting load,safety coefficient,and the lifting capacity of the lifting eauipment should be taken into conside ration when selecting the strenath class of wire rope.Do not blindly choose hiah strenath and high breaking force wire rope,this may compromise results.
2.Installation of Wire Rope
Unwinding: Put a piece of iron tube through the reel or coil of wire rope,then install the reel onto a dedicated carrier.Keep the wire rope parallel to the ground and turn to unwind.
The arrangement of wire rope on the reel:The winding direction of wire rope on the reel Should depend on the lay direction of wire rope from left to right for right-lay wire rope,from right to left for left-lay wire rope. Wind the wire rope neatly onto the reel without the wire rope overlapping each other.
Cutting: For wire rope with relatively high residual stress,use a soft iron wire to tie the rope 10-20mm from the cutting point.The length of the soft iron wire should be 1-4 times that of rope diameter.Then cut with cutting tool.
3.Maintenance and Inspection of Steel Wire Rope
Operarion: In operation, the wire rope should be in steady speed,never overload,and never shock load a wire rope.
Maintenance: Lubricant is applied to the wires and strands of a wire rope when manufactured.This lubricant is depleted when the rope is in service.And various nocuous matters will stick to the surface of the rope.These will cause abrasion between wire rope and the block,and rusting of the rope.lt is important to clean and replace lubricant to the wire rope periodically.
Record of inspection: wire rope should be inspected regularly,and all the records should be kept carefully.Other than cleaning and adding lubricant,the inspection should include checking the following: abrasion of wire rope,condition of broken wires,and corrosion.Also check the condition of metal parts such as pulley groove,loading ring,hook,etc.Pay special attention and check for external and internal broken wires in the fixed end of wire rope,and the section of wire rope that passes through pulley blocks and drums.
4.Contact between Wire Rope and Pulley Groove
The appropriate contact between pulley groove and wire rope is indicated in (figure 1).If the pulley groove is too wide(figure 2),the wire rope and its metal core are subiect to more broken wires owing to fatigue. lf the pulley groove is too narrowf(igure 3),the wire rope will be worn seriously. The ratio between the radius of pulley groove and that of the wre rope should be:R/d=0.525~0.550.
Why Us
Jiangsu Langshan Wire Rope Co.,Ltd.is a company changed over from the former Nantong Wire Rope(Group)Co.,Ltd.that is a large-scale state-run enterprise.It is one of the earliest enterprises in our country specialized in steel wire rope and steel wire manufacture with an annual output of 250,000tons in 2019,among which the annual output of steel wire rope is 180,000tons.
With 60 years' experiences in production,marketing and management,it has developed and owned a system of mature crafts, and is well equipped with the advanced technology and a complete set of measuring and testing means.The products have been widely applied in different industries such as port,marine,ocean project,metallurgymining,petroleum,telecommunication, lift &hoist,machinery,transportation,coal,forestry,ocean fishery,electric power etc. Meanwhile, the product manufacture can be organized according to those worldwide known standards such as GB,DIN,JIS,ASTM,RR-W-410,API,ISO and so on,with the"Langshan"brand as the registered trade mark.It has already passed the quality system verification of API,ISO 9001,also passed through the factory approval by classification society of CCS,Lloyds,ABS,BV,DNV etc.In 2006,the product was awarded as the"National Inspection-Free Product"and in 2007,the title of"China Top Brand Product"was granted.
The company have always attached great importance to the product quality and its reputation.The products have been sold to more than 30 provinces in domestic markets and exported to more than 20 countries & areas of America,Europe,Asia,Africa &Australia.The products are well accepted by the customers both at home and abroad.
The Company warmly and sincerely welcome the customers both at home and abroad to our company for business negotiation and all-around economic &technological cooperation,and top quality service will be provided for you in all aspects.
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