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Today's Maintenance Knowledge Points↓↓↓
Steel wire rope magnification conversion step

But it's all hard knowledge.，Suggest that you“Thumbs up、Collection”Oh！

Wire RopeIt is one of the important accessories of the crane.，According to the different requirements of the load when winding the wire rope，According to the rated lifting capacity tableSelect the appropriate wire rope magnification。Excessively small magnificationWill lead toSingle rope tension overload，Excessive magnificationWill lead toThe hook cannot be lowered to the groundFace，At the same time only lowerLifting speed of heavy objects。（Notice：Main hoisting wire rope、The auxiliary lifting wire rope must be wound according to the threading diagram.。Other winding methods may damage the equipment.。）
As a car-loving driver,，How to change the magnification of the wire rope?？Without further ado.，Let's start with today's.“Draw the key points”A trip：

The detailed steps are as follows：
01Set up the outriggers.First, set up the outriggers.，The boom is fully retracted and turned to the side or rear area,Lower the lifting hook to the ground after lowering the boom.。02Remove the rope stopper at the boom head.。（As shown in the figure）

  

03UnloadOverwinding protection heavy hammer，RemoveConnecting bolt，Take it offHeavy Hammer。

  

04Replace the magnification

The rope sling does not need to be removed from the boom head when changing the multiplying factor，Just do as shown.，Place the limit pin shaft on the rope slingUnload，Remove the wire rope from the rope slingPull out，BypassSheave on the corresponding boom head and hook，After replacing with the required magnification，Install the wire rope into the rope sling，Install the stop pin and clip on the rope sling。

  

05Pull out the wire rope

Pull out the wire rope，Open and remove the rope-retaining shaft installed on the top section arm head，Withdraw the wire rope from the pulley groove of the lifting hook.。Carry out hook lowering operation on one sides，Pull out the wire rope by hand。

Hanging friends should pay attention here.：Wear protective gloves properly during operation，Avoid scratches.。

 

  
06Multiplier as required，Re-rewind the wire rope

Put a rope sling on the end of the wire rope，And locked with a rope clamp。Attention should be paid here，Before the rope sling is put on the end of the wire rope，The over-winding protection hammer shall be covered first.。

Installation position of overwind protection weight，Vary according to the parity of the number of multiples。When it is even，Install the heavy hammer on the branch with the rope sling；When odd，Install the heavy hammer on the adjacent branch with rope sling。As shown in the figure below：

 

07Depending on the parity of the number of multiples，Fix the rope sling on the lifting hook or the main boom。

When the multiplying factor is even, the rope sling is fixed on the boom；When the multiplying factor is odd, the rope sling is fixed on the hook.。As shown in the figure below：

 

Of course，The wire rope end must be firmly placed in the pocket joint.，And the joint and the fixing pin shaft of the pulley block are fixed by a spring clip.！The crane driver must verify that the reeving process has been completed correctly，And the torque limiter has been set correctly，Before action can be carried out。

 

  

Finally，Add more hints：Select the appropriate number of multiples to ensure efficient operation，Boom length shall be considered、Load weight、Lifting speed and other factors。The multiplying factor shall be as specified in the product installation manual“Rated lifting capacity table of main jib”And“Table of Rated Lifting Capacity of Auxiliary Jib”Carry out。