High performance elevator wire rope and method of manufacture

Abstract

The application provides a high-performance elevator steel wire rope and a manufacturing method thereof, and comprises a core layer, an inner layer strand layer, an outer layer strand layer and a protective layer; the core of the core layer is twisted by polyester fiber core, carbon fiber rope and aramid fiber rope in a special arrangement mode, and is filled with reinforcing steel wires, so that the softness and the internal oil content of the core are ensured, the tensile property, the corrosion resistance and the breaking tension of the core are enhanced, and the overall performance of the steel wire rope is improved; meanwhile, a second polyethylene fiber layer is arranged outside the inner layer strand, the tensile property and the strength of the steel wire rope are further improved through the arrangement of the first polyethylene fiber layer and the second polyethylene fiber layer; and the internal grease loss and rust of the steel wire rope are prevented through the protective layer, the wear resistance and the corrosion resistance of the tempered rope are improved, the strength of the steel wire rope is enhanced, and the overall performance of the steel wire rope is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel wire rope, in particular to a high-performance elevator steel wire rope and a manufacturing method thereof. BACKGROUND

[0002] The steel wire rope is one of the most important components of the elevator. During the normal operation of the elevator, the steel wire rope needs to bear a huge hoisting pressure. Therefore, during the use of the elevator steel wire rope, the following problems are prone to occur: (1) the diameter of the steel wire rope becomes smaller; (2) the steel wire rope is corroded; and (3) the steel wire rope is broken.

[0003] Once the above problems occur, the load-bearing performance of the steel wire rope will be seriously affected or even damaged to the extent that it cannot be used, which seriously affects the safety of the elevator during operation. Therefore, the elevator steel wire rope has strict requirements on the tensile resistance, corrosion resistance and breaking strength of the steel wire rope during selection.

[0004] Therefore, it is necessary to provide a high-performance elevator steel wire rope with good tensile resistance, corrosion resistance and breaking strength. SUMMARY

[0005] In view of the problem that the elevator steel wire rope has strict requirements on the tensile resistance, corrosion resistance and breaking strength in the prior art, the present application provides a high-performance elevator steel wire rope and a manufacturing method thereof, which meet the selection requirements of the elevator steel wire rope.

[0006] The high-performance elevator steel wire rope comprises a core layer, an inner layer strand layer, an outer layer strand layer and a protective layer. The core layer comprises a core and a first polyethylene fiber layer arranged outside the core. The core comprises a center strand and an oil storage strand. The center strand comprises a polyester fiber core and a plurality of carbon fiber ropes and aramid fiber ropes which are staggered and spirally twisted outside the outer layer of the polyester fiber core. The oil storage strand comprises a plurality of polyester fiber ropes spirally twisted on the center strand. The outer gaps between adjacent aramid fiber ropes and carbon fiber ropes and the outer gaps between adjacent polyester fiber ropes are filled with reinforcing steel wires. The twisting directions of the center strand and the oil storage strand are opposite. The inner layer strand layer comprises nine inner layer strands which are spirally twisted in line contact outside the core layer, and a second polyethylene fiber layer is arranged on the surface of the inner layer strand layer. The second polyethylene fiber layer and the outer layer strand layer are filled with glass fiber filaments. The outer layer strand layer comprises twelve outer layer strands which are spirally twisted in line contact on the inner layer strand layer. The protective layer is arranged on the surface of the outer layer strand layer.

[0007] Preferably, an anti-skid groove is arranged on the protective layer.

[0008] Preferably, the protective layer comprises a ceramic fiber layer and a polyurethane resin layer. The ceramic fiber layer uniformly wraps the surface of the outer layer strand layer, and the polyurethane resin layer is arranged on the ceramic fiber layer.

[0009] Preferably, the outer layer strand layer is filled with water-blocking yarn between the ceramic fiber layer.

[0010] Preferably, the inner layer strand includes one core steel wire and six inner layer strand steel wires which are twisted around the core steel wire in a line contact manner.

[0011] Preferably, the outer layer strand is divided into three layers, including a polyester fiber rope core, six inner layer steel wires and nine outer layer steel wires; the six inner layer steel wires are twisted around the polyester fiber rope core in a line contact manner, and the nine outer layer steel wires are symmetrically twisted on the outermost side.

[0012] Preferably, the twist direction of the inner layer strand is opposite to that of the outer layer strand.

[0013] The application further provides a manufacturing method of the high-performance elevator steel wire rope, which is used for manufacturing the high-performance elevator steel wire rope and comprises the following steps: Step 1: material selection: selecting a plurality of steel wires coated with manganese phosphating coating, a plurality of polyester fiber ropes with different diameters, aramid fiber ropes, carbon fiber ropes, glass fiber filaments, ceramic fiber layers and polyurethane resins; Step 2: wire drawing: drawing the steel wires by using a wire drawing machine to obtain steel wires with different diameters required for preparing the reinforcing steel wires, the inner layer strands and the outer layer strands; Step 3: preparation of the rope core: selecting polyester fiber ropes, aramid fiber ropes, carbon fiber ropes and steel wires with corresponding specifications; drying the polyester fiber ropes, the aramid fiber ropes and the carbon fiber ropes, compacting the ropes by using a machine, heating and pressurizing the ropes to be cured and formed, taking a plurality of aramid fiber ropes and carbon fiber ropes to be arranged and spirally twisted around a polyester fiber rope to obtain a center strand, taking steel wires with corresponding specifications as reinforcing steel wires to be evenly arranged at outer gaps between adjacent aramid fiber ropes and carbon fiber ropes, and taking a plurality of polyester fiber ropes to be arranged and spirally twisted around the center strand and to fill the reinforcing steel wires in outer gaps between adjacent polyester fiber ropes to obtain the rope core, wherein the twist directions of the center strand and the oil storage strands are opposite, and the twist pitches are both 6.0-6.5; Step 4: preparation of the rope core layer: coating an adhesive on the outer surface of the rope core, wrapping a polyethylene fiber layer and then curing and forming the rope core layer by hot pressing at a temperature of 120-135 DEG C and a pressure of 30 MPa to obtain a first polyethylene fiber layer fixed on the outer surface of the rope core and then obtain the rope core layer; and then putting the rope core layer into an oil tank, immersing the rope core layer in oil at a temperature of 100-110 DEG C for 40-60 min to obtain the rope core layer containing oil; Step 5: preparation of the inner layer strands and the outer layer strands: taking steel wires with corresponding specifications as the strand core steel wires, the inner layer strand steel wires, the inner layer steel wires and the outer layer steel wires, and taking the polyester oil storage strand core cured and formed in Step 3 as the polyester oil storage strand core, arranging the strand core steel wires and the inner layer strand steel wires according to corresponding structures so that the inner layer strand steel wires are spirally twisted around the strand core steel wires in a line contact manner to obtain the inner layer strands, and arranging the polyester oil storage strand core, the inner layer steel wires and the outer layer steel wires according to corresponding structures so that the inner layer steel wires are spirally twisted around the polyester oil storage strand core in a line contact manner and the outer layer steel wires are symmetrically twisted on the outermost side to obtain the outer layer strands; and performing stress relief treatment on the prepared inner layer strands and outer layer strands; wherein the twist direction of the inner layer strands is left alternating twist, the twist direction of the outer layer strands is right alternating twist, and the twist pitch is 8.2-8.5 times; and Step 6: rope strand oiling: immersing the twisted inner layer strands and outer layer strands in oil at a temperature of 100-110 DEG C for 1-1.5h;Step seven: rope combination: 9 inner layer strands are spirally twisted on the outer surface of the core layer to form an inner layer strand layer, the inner layer strand layer is preheated, adhesive is coated on the outer surface of the inner layer strand layer, and a polyethylene fiber layer is wrapped and formed by hot pressing and curing after solidification, the hot pressing temperature is 120-135 DEG C, the hot pressing strength is 30 MPa, a second polyethylene fiber layer fixed on the outer surface of the inner layer strand layer is obtained, a layer of grease is sprayed on the outer surface after cooling, a layer of glass fiber is adhered by the viscosity of the grease, 12 outer layer strands are spirally twisted on the outer side of the inner layer strand layer after compaction to form an outer layer strand layer, and then stress relief treatment is performed;Step eight: preparation of the protective layer: the steel wire rope without the protective layer obtained in step seven is preheated, adhesive is coated on the outer surface of the inner layer strand layer, and a ceramic fiber layer is wrapped and formed by hot pressing and curing after solidification, the hot pressing temperature is 180-200 DEG C, the hot pressing strength is 40 MPa, the ceramic fiber layer is fixed on the outer surface of the outer layer strand layer, and the polyurethane resin layer is formed after baking after coating the polyurethane resin on the ceramic fiber layer after cooling, and the high-performance elevator steel wire rope is obtained.

[0014] Preferably, the ceramic fiber layer in step one is made of a mixture of quartz fiber, alumina fiber and silicon carbide fiber.

[0015] Preferably, the deformation rate of each strand is controlled at 84% to 90% and the deformation rate deviation is less than 8% during the rope combination in step six.

[0016] The present application has the following advantages: the present application provides a high-performance elevator steel wire rope, which comprises a core layer, an inner layer strand layer, an outer layer strand layer and a protective layer;The core layer comprises a core and a first polyethylene fiber layer, the core is twisted by polyester fiber core, carbon fiber rope and aramid fiber rope in a special arrangement, which ensures the softness of the core and the oil content in the core, enhances the tensile strength, corrosion resistance and strength of the core, and makes the core structure more solid and compact by filling the steel wire, enhances the breaking tensile strength of the core and improves the overall performance of the steel wire rope;Meanwhile, the second polyethylene fiber layer is arranged outside the inner layer strand, the first and second polyethylene fiber layers are arranged to further improve the tensile strength of the steel wire rope;Finally, the glass fiber is filled between the second polyethylene fiber layer and the outer layer strand layer, which makes the inner layer strand layer and the outer layer strand layer more compact and reduces the influence of external temperature on the first and second polyethylene fiber layers by using the heat insulation performance of the glass fiber, ensures the stability of the performance of the first and second polyethylene fiber layers, and makes the overall performance of the steel wire rope more superior.

[0017] The present application also provides a method for manufacturing a high-performance steel wire rope, which twists the core by combining a plurality of artificial fibers, and fills the core with reinforced steel wire, to obtain a high-performance core with good tensile strength, corrosion resistance and strength, and effectively improves the tensile strength of the steel wire rope by arranging the first and second polyethylene fiber layers. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure schematic diagram of a high-performance elevator steel wire rope according to the present application;

[0019] Figure 2 A structure schematic diagram of a core layer according to the present application;

[0020] Figure 3 A structure schematic diagram of an inner layer strand according to the present application;

[0021] Figure 4 A structure schematic diagram of an outer layer strand according to the present application;

[0022] Figure 5 A flowchart schematic diagram of a manufacturing method of a high-performance elevator steel wire rope according to the present application.

[0023] IDENTIFICATION OF DRAWINGS

[0024] 1, core layer; 11, core; 111, polyester fiber core; 112, carbon fiber rope; 113, aramid fiber rope; 114, polyester fiber rope; 115, reinforcing steel wire; 12, first polyethylene fiber layer; 2, inner layer strand layer; 21, inner layer strand; 211, strand core steel wire; 212, inner layer strand steel wire; 3, outer layer strand layer; 31, outer layer strand; 311, polyester oil storage strand core; 312, middle layer steel wire; 313, outer layer steel wire; 4, protective layer; 41, ceramic fiber layer; 42, polyurethane resin layer; 5, second polyethylene fiber layer; 6, glass fiber; 7, anti-skid groove; 8, water-blocking yarn. DETAILED DESCRIPTION

[0025] The embodiments described below are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0026] REFERENCE Figure 1 As shown, the present application provides a high-performance elevator steel wire rope, which comprises a core layer 1, an inner layer strand layer 2, an outer layer strand layer 3 and a protective layer 4.

[0027] In particular, as shown in Figure 1 and Figure 2 , the core layer 1 comprises a core 11 and a first polyethylene fiber layer 12 arranged outside the core 11. The polyethylene fiber layer has high tensile strength, elongation and moisture resistance, and has stable chemical properties, which can adapt to the complex use environment of the elevator, can effectively improve the tensile strength and tear resistance of the core 11, and can reduce the friction between the core layer 1 and the inner layer strand layer 2.

[0028] The fiber is used as the main raw material of the rope core 11 because the elevator steel wire rope has certain requirements for the softness of the steel wire rope. Considering the complexity of the elevator environment and the shortening of the length of the plant fiber core in a humid environment, the synthetic fiber is used. Therefore, the rope core 11 includes a center strand (not marked in the figure) and an oil storage strand (not marked in the figure); the center strand includes a polyester fiber rope core 111 and a plurality of carbon fiber ropes 112 and aramid fiber ropes 113 that are interlaced and twisted on the outer layer of the polyester fiber rope core 111, and the oil storage strand includes a plurality of polyester fiber ropes 114 that are twisted on the center strand.

[0029] The aramid fiber has excellent properties such as super-high strength, high temperature resistance, acid and alkali resistance, light weight, and long life cycle, which can effectively improve the strength of the rope core 11; the carbon fiber has high tensile strength, high temperature resistance, corrosion resistance, and good anti-seismic performance, which can effectively improve the tensile performance of the rope core 11; the polyester fiber has the characteristics of not easy to deform, good oil absorption and oil storage, which can further improve the oil absorption and oil storage performance of the rope core 11. Therefore, by combining the advantages of aramid fiber, carbon fiber and polyester fiber, the rope core 11 is twisted in a special arrangement, and a high-performance rope core 11 with good oil storage, high strength and excellent tensile capacity is obtained.

[0030] The outer gap between the adjacent aramid fiber ropes 113 and the carbon fiber ropes 112 and the outer gap between the adjacent polyester fiber ropes 114 are both filled with reinforcing steel wires 115; by filling, the reinforcing steel wires 115 fill the gap between the center strand and the oil storage strand on the outside, increase the density of the rope core 11, and make the overall structure of the rope core 11 more solid and firm, anti-pressure, improve the breaking tension strength of the rope core 11, reduce the deflection phenomenon between the strands of the rope core 11, ensure that the rope core 11 has enough support in use, and enhance the extrusion resistance of the rope core 11.

[0031] The twisting directions of the center strand and the oil storage strand are opposite, so that the rope core 11 has excellent rotation resistance and can prevent the rope core layer 1 from loosening to a certain extent.

[0032] When the rope core layer 1 is used in the steel wire rope, the bending or stretching of the steel wire rope can cause the oil in the rope core to be squeezed out and flow into the outer strand layer 3 and the inner strand layer 2, lubricating the overall steel wire rope, reducing the friction between the strands, preventing rusting of the strands, improving the corrosion resistance of the steel wire rope, and prolonging the service life of the steel wire rope.

[0033] Reference Figure 1 and Figure 3As shown, the inner layer strand layer 2 includes 9 inner layer strands 21 spirally wrapped outside the core layer 1 in line contact, and the surface is provided with a second polyethylene fiber layer 5. Through the arrangement of the second polyethylene fiber layer 5, the overall tensile strength of the inner layer strand layer 2 after being spirally wrapped outside the surface of the core layer 1 can be further improved, and the friction between the inner layer strand layer 2 and the outer layer strand layer 3 can be reduced.

[0034] The inner layer strand 21 includes a core steel wire 211 and 6 inner layer strand steel wires 212 spirally wrapped outside the core steel wire 211 in line contact.

[0035] Although the polyethylene fiber has good wet heat resistance, its heat resistance is relatively poor, and high temperature will affect the stability of its performance, so glass fiber filaments 6 are filled between the second polyethylene fiber layer 5 and the outer layer strand layer 3; the glass fiber has high elastic coefficient and good heat resistance, and can play a good heat insulation role. Through the arrangement of the glass fiber filaments 6, on the one hand, the structure of the inner layer strand layer 2 and the outer layer strand layer 3 is more compact, and the breaking tension strength of the steel wire rope is enhanced to a certain extent, and on the other hand, the acid and alkali corrosion resistance of the steel wire rope is enhanced, and the heat insulation effect is achieved, which can reduce the influence of the external temperature on the first polyethylene fiber layer 12 and the second polyethylene fiber layer 5, and ensure the stability of the performance of the first polyethylene fiber layer 12 and the second polyethylene fiber layer 5.

[0036] Reference Figure 1 and Figure 4 As shown, the outer layer strand layer 3 includes 12 outer layer strands spirally wrapped on the inner layer strand layer 2 in line contact.

[0037] The outer layer strand 3 is divided into three layers, including a polyester fiber core 31, 6 inner layer steel wires 32, and 9 outer layer steel wires 33; the 6 inner layer steel wires 32 are spirally wrapped around the polyester fiber core 31 in line contact, and the 9 outer layer steel wires 33 are symmetrically wrapped on the outermost side. By utilizing the oil absorption and storage characteristics of the polyester fiber core 31, the polyester fiber core 31 can extrude the stored oil when the steel wire rope is used, and the oil can be immersed in each steel wire layer of the outer layer strand 3 to lubricate the outer layer strand 3 and prevent rusting of each steel wire of the outer layer strand 3, thereby prolonging the service life; at the same time, the polyester fiber core 31 can absorb the excess oil extruded from the core layer 1 for storage.

[0038] The outer layer strand layer 3 and the inner layer strand layer 2 have opposite twist directions, which is beneficial to reducing the contact stress between the strands and improving the rotation resistance of the steel wire rope to prevent the steel wire rope from loosening.

[0039] The grease on the surface of the elevator steel wire is easy to stick with dust in the air to generate elevator steel wire surface grease stain, which not only causes waste of lubricating grease, but also causes corrosion to the steel wire, so the protective layer 4 is arranged. The protective layer 4 is arranged on the surface of the outer layer strand 3 layer, and the anti-skid groove 7 is arranged on the protective layer 4, so that the friction of the outer surface of the steel wire can be improved.

[0040] The protective layer 4 comprises a ceramic fiber layer 41 and a polyurethane resin layer 42, the ceramic fiber layer 41 uniformly wraps the surface of the outer layer strand layer 3, and the polyurethane resin layer 42 is arranged on the ceramic fiber layer 41.

[0041] The ceramic fiber has the advantages of high temperature resistance, corrosion resistance, heat insulation, good thermal stability, uniformity, continuity, density, good flexibility and other mechanical properties, can enhance the acid and alkali corrosion resistance and mechanical properties of the steel wire, and also plays a role of heat insulation, which can further reduce the influence of external temperature on the first polyethylene fiber layer and the second polyethylene fiber layer. The polyurethane resin layer 4 has strong wear resistance, which can effectively improve the wear resistance of the steel wire, and can also reduce the contact area of the steel wire with the external air and the loss of internal grease, prevent the grease from forming grease stain and adhering to the surface of the steel wire, and corrode the steel wire.

[0042] Preferably, the outer layer strand layer 3 and the ceramic fiber layer 41 are filled with water-blocking yarn 8. The water-blocking yarn 8 expands after absorbing water, fills the gap between the steel wires, and can effectively prevent water from entering the steel wire to cause rusting of the steel wire.

[0043] Reference Figure 1 and Figure 5 As shown in FIGS. 1 to 4, the application also provides a manufacturing method of a high-performance elevator steel wire, which is used for manufacturing the high-performance elevator steel wire as described above, and comprises the following steps:

[0044] Step 1: material selection: select a plurality of steel wires plated with manganese-based phosphating coating, a plurality of polyester fiber ropes with different diameters, aramid fiber ropes, carbon fiber ropes, polyethylene fiber layers, glass fiber filaments, ceramic fiber layers and polyurethane resins;

[0045] The wire drawing machine draws the steel wires to obtain steel wires with different diameters required for preparing the reinforcing steel wires 115, the inner layer strands 21 and the outer layer strands 31;

[0046] Step three: preparation of the core 11: select the corresponding specification of polyester fiber rope, aramid fiber rope 113, carbon fiber rope 112 and steel wire; the polyester fiber rope, aramid fiber rope 113, carbon fiber rope 112 is dried, and after compaction by machine, it is heated and pressurized to solidify and form. Then, a plurality of aramid fiber ropes 113 and carbon fiber ropes 112 are wound around a polyester fiber rope 111 as a polyester fiber rope core 111 and spirally twisted around the polyester fiber rope to obtain a center strand. Then, the corresponding specification of steel wire is used as a reinforcing steel wire 115, which is uniformly arranged in the outer gap between adjacent aramid fiber ropes 113 and carbon fiber ropes 112. Then, a plurality of polyester fiber ropes 114 are wound around the center strand and spirally twisted around the center strand, and the reinforcing steel wire 115 is filled in the outer gap between adjacent polyester fiber ropes 114 to obtain the core 11. The twist directions of the center strand and the oil storage strand are opposite, and the twist pitches are both 6.0-6.5;

[0047] Step four: preparation of the core layer 1: coat the adhesive on the outer surface of the core 11, and wrap the polyethylene fiber layer, and then solidify and form by hot pressing at a temperature of 120-135℃ and a pressure of 30MPa to obtain the first polyethylene fiber layer 12 fixed on the outer surface of the core 11, and then obtain the core layer 1. Then, the core layer 1 is put into an oil tank and immersed in oil at a temperature of 100-110℃ for 40-60min to obtain the oil-containing core layer 1.

[0048] Step five: preparation of the inner layer strand 21 and the outer layer strand 31: use the corresponding specification of steel wire as the core steel wire 211, the inner layer strand steel wire 212, the inner layer steel wire 312 and the outer layer steel wire 321, and use the polyester fiber rope solidified and formed in step three as the polyester oil storage core 311. Arrange the core steel wire 211 and the inner layer strand steel wire 212 according to the corresponding structure, so that the inner layer strand steel wire 212 is spirally twisted around the core steel wire 211 in a line contact manner to obtain the inner layer strand 21. Arrange the polyester oil storage core 311, the inner layer steel wire 312 and the outer layer steel wire 313 according to the corresponding structure, so that the inner layer steel wire 312 is spirally twisted around the polyester oil storage core 311 in a line contact manner, and the outer layer steel wire 313 is symmetrically twisted on the outermost side to obtain the outer layer strand 31. The prepared inner layer strand 21 and the outer layer strand 31 are subjected to stress relief treatment. The twist direction of the inner layer strand 21 is left alternating twist, and the twist direction of the outer layer strand 31 is right alternating twist, and the twist pitch is 8.2-8.5 times.

[0049] Step six: rope strand oiling: the twisted inner layer strand 21 and the outer layer strand 31 are put into oil at a temperature of 100-110℃ for 1-1.5h.

[0050] Step seven: rope combination: 9 inner layer strands 21 are spirally wrapped on the outer surface of the core layer 1 to form the inner layer strand layer 2. After preheating the inner layer strand layer 2, an adhesive is coated on the outer surface of the inner layer strand layer 2, and a polyethylene fiber layer is wrapped and then cured by hot pressing to form a second polyethylene fiber layer 5 fixed on the outer surface of the inner layer strand layer. After cooling, a layer of grease is sprayed on the outer surface of the second polyethylene fiber layer 5, and a layer of glass fiber silk 6 is adhered by the viscosity of the grease. After compaction, 12 outer layer strands 31 are spirally wrapped on the outer side of the inner layer strand layer 2 to form the outer layer strand layer 3, and then stress relief treatment is performed.

[0051] Step eight: preparation of the protective layer 4: the steel wire rope without the protective layer 4 obtained in step seven is preheated, an adhesive is coated on the outer surface of the inner layer strand layer 2, and a ceramic fiber layer 41 is wrapped and then cured by hot pressing to form the ceramic fiber layer 41 fixed on the outer surface of the outer layer strand layer. After cooling, the polyurethane resin layer 42 is formed by coating the polyurethane resin on the ceramic fiber layer 41 and baking, and the high-performance elevator steel wire rope is obtained.

[0052] Preferably, the ceramic fiber layer 41 of step one is made of a mixture of quartz fiber, alumina fiber and silicon carbide fiber. The deformation rate of each strand during step six rope combination is controlled at 84% to 90%, and the deformation rate deviation is less than 8%.

[0053] The high-performance elevator steel wire rope manufacturing method provided by the application can ensure the grease content and tensile strength of the core 11 by twisting the core 11 from a plurality of artificial fibers according to a specific arrangement, thereby improving the tensile performance of the steel wire rope, enabling it to self-lubricate for a long time, improving the corrosion resistance of the steel wire rope, and filling the core gap with reinforcing steel wires to make the core 11 structure more solid and compact, ensuring the softness of the core 11 while improving the support of the core 11, and improving the mechanical properties and breaking tension of the core 11. The polyethylene fiber layer 12 is arranged on the outer layer of the core 11, and the second polyethylene fiber layer 5 is arranged on the outer layer of the inner layer strand layer 2, which further improves the tensile performance and breaking tension of the steel wire rope as a whole, so that the steel wire rope is not easy to break during stretching. The glass fiber silk 6 is filled between the second polyethylene fiber layer 5 and the outer layer strand layer 3 to ensure the stability of the performance of the polyethylene fiber during use by using its heat insulation performance. The protective layer 4 is arranged to enhance the corrosion resistance and wear resistance of the steel wire rope, thereby improving the service life of the steel wire rope, so that a high-performance elevator steel wire rope with good tensile performance, strong corrosion resistance and high breaking tension is obtained.

[0054] The above descriptions are only the preferable embodiments of the present application, and cannot limit the scope of the present application. Any equivalent changes made in the scope of the patent application of the present application shall be covered by the present application.

Claims

1. A high-performance elevator wire rope, comprising a core layer, an inner strand layer, an outer strand layer, and a protective layer, characterized in that, The core layer includes a core and a first polyethylene fiber layer disposed outside the core. The core includes a central strand and an oil-retaining strand. The central strand includes a polyester fiber core and several carbon fiber ropes and aramid fiber ropes interlaced and spirally twisted on the outer layer of the polyester fiber core. The oil-retaining strand includes several polyester fiber ropes spirally twisted on the central strand. The outer gaps between adjacent aramid fiber ropes and carbon fiber ropes and the outer gaps between adjacent polyester fiber ropes are filled with reinforcing steel wires. The central strand and the oil-retaining strand have opposite twist directions. The inner layer comprises nine inner strands spirally twisted around the core layer in a line-contact manner, and its surface is provided with a second polyethylene fiber layer; glass fiber filaments are filled between the second polyethylene fiber layer and the outer layer. The outer layer comprises 12 outer strands spirally twisted onto the inner layer in a line-contact manner. The protective layer is disposed on the surface of the outer strand layer; wherein... This high-performance elevator wire rope is manufactured by the following steps: Step 1: Material selection: Select several steel wires coated with manganese phosphate, several polyester fiber ropes of different diameters, aramid fiber ropes, carbon fiber ropes, polyethylene fiber layers, glass fiber filaments, ceramic fiber layers and polyurethane resin. Step 2: Wire drawing: The steel wire is drawn using a wire drawing machine to obtain steel wires of different diameters required for preparing reinforcing steel wires, inner strands, and outer strands; Step 3: Rope Core Preparation: Select polyester fiber rope, aramid fiber rope, carbon fiber rope, and steel wire of appropriate specifications; dry the polyester fiber rope, aramid fiber rope, and carbon fiber rope, compact them with a machine, and then heat and pressurize them to form a solid shape. Take several aramid fiber ropes and carbon fiber ropes and arrange them alternately around a polyester fiber rope and spirally twist the polyester fiber rope to obtain the central strand; then take steel wire of appropriate specifications as reinforcing steel wires and evenly place them in the outer gaps between adjacent aramid fiber ropes and carbon fiber ropes; take several polyester fiber ropes and arrange them around the central strand and spirally twist the central strand, and fill the outer gaps between adjacent polyester fiber ropes with reinforcing steel wires to obtain the rope core. The central strand and the oil storage strand have opposite twist directions, and the twist pitch is 6.0-6.

5. Step 4: Preparation of the rope core layer: Apply an adhesive to the outer surface of the rope core, wrap it with a polyethylene fiber layer, and then cure it by hot pressing. The hot pressing temperature is 120-135℃ and the hot pressing strength is 20MPa. This results in the first polyethylene fiber layer fixed on the outer surface of the rope core, which is then the rope core layer. The rope core layer is then immersed in an oil bath and soaked in grease at a temperature of 100-110℃ for 40-60 minutes to form an oil-containing rope core layer. Step 5: Preparation of inner and outer strands: Steel wires of appropriate specifications are used as the core wire, inner strand wire, and outer strand wire, respectively. The polyester fiber rope cured in Step 3 is used as the polyester oil storage core. The core wire and inner strand wire are arranged according to their respective structures, so that the inner strand wire is spirally twisted around the core wire in a line-contact manner, thus obtaining the inner strand. The polyester oil storage core, inner strand wire, and outer strand wire are arranged according to their respective structures, so that the inner strand wire is twisted around the polyester oil storage core in a line-contact manner, and the outer strand wire is symmetrically twisted on the outermost side, thus obtaining the outer strand. The prepared inner and outer strands undergo stress-relief treatment. The inner strand has a left-handed alternating twist, and the outer strand has a right-handed alternating twist, with a twist length of 8.2-8.5 times. Step 6: Oiling the rope strands: Immerse the twisted inner and outer strands in grease at 100-110℃ for 1-1.5 hours. Step 7: Rope Assembly: The 9 inner strands are spirally twisted around the outer surface of the rope core layer to form the inner strand layer. After preheating the inner strand layer, an adhesive is applied to the outer surface of the inner strand layer, and a polyethylene fiber layer is wrapped around it. The layer is then cured by hot pressing at a temperature of 120-135℃ and a pressing strength of 30MPa to obtain a second polyethylene fiber layer fixed on the outer surface of the inner strand layer. After cooling, a layer of grease is sprayed onto the outer surface to adhere a layer of glass fiber filaments using the grease's adhesiveness. After compaction, the 12 outer strands are spirally twisted around the outer side of the inner strand layer to form the outer strand layer. Then, stress relief treatment is performed. Step 8: Preparation of the protective layer: After preheating the steel wire rope without the protective layer obtained in Step 7, an adhesive is applied to the outer surface of the inner strand layer, and a ceramic fiber layer is wrapped around it. Then, it is cured by hot pressing at a temperature of 180-200℃ and a pressing strength of 40MPa. The ceramic fiber layer is fixed on the outer surface of the outer strand layer. After cooling, polyurethane resin is coated on the ceramic fiber layer and then baked to cure and form a polyurethane resin layer, thus obtaining the high-performance elevator steel wire rope.

2. The high-performance elevator wire rope according to claim 1, characterized in that, The protective layer is provided with anti-slip grooves.

3. The high-performance elevator wire rope according to claim 1, characterized in that, The protective layer includes a ceramic fiber layer and a polyurethane resin layer. The ceramic fiber layer is uniformly wrapped around the surface of the outer layer, and the polyurethane resin layer is disposed on the ceramic fiber layer.

4. The high-performance elevator wire rope according to claim 1, characterized in that, Water-resistant yarn is filled between the outer strand layer and the ceramic fiber layer.

5. The high-performance elevator wire rope according to claim 1, characterized in that, The inner strands include a core steel wire and six inner strands of steel wire twisted around the core steel wire in a line-contact manner.

6. The high-performance elevator wire rope according to claim 1, characterized in that, The outer strand is divided into 3 layers, including a polyester fiber rope core, 6 inner steel wires, and 9 outer steel wires; the 6 inner steel wires are twisted around the polyester fiber rope core in a line contact manner, and the 9 outer steel wires are symmetrically twisted around the outermost layer.

7. The high-performance elevator wire rope according to claim 1, characterized in that, The inner and outer strands have opposite twist directions.

8. A method for manufacturing a high-performance elevator wire rope, used to manufacture the high-performance elevator wire rope as described in claim 1, characterized in that, The ceramic fiber layer in step one is made of a mixture of quartz fiber, alumina fiber and silicon carbide fiber.

9. A method for manufacturing a high-performance elevator wire rope according to claim 8, characterized in that, When assembling the rope in step six, the deformation rate of each strand should be controlled between 84% and 90%, with a deformation rate deviation of less than 8%.

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