Influence Of Double Rope Multi-layer Winding Hoisting Drum And Wire Rope Deformation On Cumulative Rope Length And Tension Difference

Coal mine resources are China's main energy resources.With the development of the national economy,shallow coal mines are increasingly mined and consumed,making China's mineral resources gradually deepened.As an effective equipment for transporting coal mine resources,mine hoists not only need to have good operational capability,but also ensure sufficient safety and reliability.At this stage,the design and manufacturing technology of single-rope-wound and multi-rope friction hoists for shallow wells(within 1000m)has become more mature in China,and when the lifting depth exceeds 1500 m,if traditional lifting equipment is still used,it will The single-rope-wound hoist wire rope and reel have a large diameter,and the friction hoist wire rope has an excessively large alternating stress amplitude,reduced lifting efficiency and increased cost,so it is not suitable for ultra-deep well lifting.After research,the multi-rope winding hoist is the most effective lifting equipment to meet the ultra-deep mine heavy load(240t),high speed(18m / s),high efficiency and high safety.In this paper,the coupling deformation of the wire rope on the reel and the reel is studied.Considering the real-time change of the initial tension of the wire rope during the lifting process,the coupling deformation law between the wire rope and the reel is analyzed,and the length of the support of the different support of the web is discussed.The influence of the difference between the difference and the tension is optimized to optimize the support position of the web.The finite element method is used to analyze the deformation of the reel and the theoretical calculation results.The correctness of the previous numerical calculation results is verified,which provides a theoretical reference for practical engineering.The main contents of this paper are as follows:(1)For the specific rope-out mode,the mathematical model of the deformation of the drum and the deformation of the wire rope is established during the lifting process,and the mathematical calculation formula of the deformation of the drum and the wire rope is derived,and the wire rope is obtained when one layer and multiple layers are wound.The variation of the cumulative winding error and the amount of tension reduction.(2)For the real-time change of the initial tension of the wire rope during the lifting process,the mathematical calculation model of the coupling deformation of the reel considering the influence of the web support force is obtained,and the cumulative rope length difference between the two different tangled ropes in the whole lifting process is solved by Matlab numerical solution.And the law of the difference in tension.(3)By analyzing the symmetrical and asymmetrical support positions of the web,the variation of the rope length difference and the tension difference on the two ropewrapped areas is compared with the rope length difference and the tension difference as the index to obtain the best support area of the web.,to make a theoretical reference for the actual project.(4)Establish the finite element model of the experimental table reel,simulate the radial deformation law during the lifting process of the reel with the cyclic loading of each cycle,and calculate the deformation and the deformation of each rope groove of the reel by theoretical calculation.The values are compared to verify the correctness of the numerical results,thus proving that the previous theoretical research can provide a theoretical reference for practical engineering.