Novel steel wire rope for port machinery
By adopting a new type of port machinery wire rope with a 7×36WS:IWRC structure, the problems of low bending fatigue life and poor wear resistance of existing wire ropes have been solved, achieving higher bending fatigue performance and wear resistance, and extending service life.
Patent Information
- Application Number
- CN202422967365.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing steel wire ropes for port machinery have low bending fatigue life, are prone to breakage, and have poor wear resistance, making them unsuitable for use in complex environments.
The new type of port machinery wire rope adopts the 7×36WS:IWRC structure, which includes an outer rope and a steel core. The outer rope is composed of several outer strands of wire rope, and the steel core is composed of several inner strands of steel core and a central strand. The outer strands of wire rope and the inner strands of steel core are in line contact, evenly distributed and spirally wound, with the same twisting direction, which improves the flexibility and wear resistance of the wire rope.
It improves the bending fatigue performance and wear resistance of the wire rope while maintaining its breaking strength, resulting in a more stable structure and extended service life.
Smart Images
Figure CN223593120U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to steel wire rope technical field, more particularly to novel port machine with steel wire rope. BACKGROUND
[0002] Port machine with steel wire rope is a crucial component in port machinery equipment, and its performance directly relates to the safety and efficiency of the equipment. With the continuous development of global trade and the increase of port throughput, the requirements for port machines and their key components, steel wire ropes, are becoming increasingly stringent. Steel wire rope is a composite structural material made of multiple high-strength steel wires twisted together. Under normal circumstances, steel wire rope is composed of an inner core (usually a fiber or steel wire core), an outer layer of steel wire, and possibly an intermediate layer. The inner core provides the flexibility of the steel wire rope, while the outer layer of steel wire provides the necessary strength and wear resistance. Depending on different application requirements, steel wire rope can be designed in different structural forms, such as 6×19, 6×37, 8×19, etc., with the numbers representing the number of strands and the number of steel wires in each strand. In order to meet the use requirements of port machines in various complex environments, the material selection of steel wire rope is crucial. Generally, high-quality alloy steel with high tensile strength and strong corrosion resistance is chosen as the raw material. In addition, advanced pre-deformation technology and surface treatment methods, such as galvanizing and oiling, are used in the manufacturing process to improve the service life and fatigue resistance of steel wire rope. These processes not only enhance the mechanical properties of steel wire rope, but also effectively reduce the risk of damage caused by environmental factors. The application scenarios of port machine with steel wire rope are extremely wide, including but not limited to container cranes, bulk cargo handling machines, gantry cranes, etc. Due to the characteristics of heavy load, frequent start-stop, long-time continuous work, etc. in port operations, higher requirements are put forward for steel wire rope. For example, in adverse weather conditions such as strong winds, heavy rains, sea fog, etc., steel wire rope needs to maintain good stability and reliability; in high-temperature or low-temperature environments, it should have sufficient heat resistance and cold resistance to ensure that its performance is not affected by temperature changes. With the progress of science and technology, port machine with steel wire rope is also evolving. The application of new materials, more efficient production processes, and the introduction of intelligent monitoring systems are gradually changing the face of traditional steel wire rope. In the future, we can expect more durable, lightweight, and easy-to-manage steel wire rope products to appear, which will bring higher efficiency and lower cost to port operations. Port machine with steel wire rope not only serves as a bridge connecting the lifting device and the cargo, but also is a key link to ensure the efficient and safe operation of the port.
[0003] At present, the hoisting steel wire rope commonly used in port machines is 6-strand or 8-strand line contact / compacted strand steel wire rope. During use, the steel wire rope frequently passes through pulleys, runs at a high speed, and often accompanies with sudden stop and sudden lifting, so the impact load of the steel wire rope is relatively frequent, and the main failure mode is fatigue and wear. The steel wire rope has high requirements for fatigue performance, wear resistance and impact resistance. In use, the 6-strand or 8-strand steel wire rope has low bending fatigue life or poor wear resistance, so that the steel wire rope is broken early, and the service life cannot meet the user's demand. Content of the utility model
[0004] The utility model discloses a novel steel wire rope for port machine, which solves the problems of low bending fatigue life and early breakage of the steel wire rope in the prior art.
[0005] The utility model discloses a novel steel wire rope for port machine, which solves the problems of low bending fatigue life and early breakage of the steel wire rope in the prior art.
[0006] The utility model discloses a novel steel wire rope for port machine, which solves the problems of low bending fatigue life and early breakage of the steel wire rope in the prior art.
[0007] The steel core comprises a plurality of inner-layer strands and a central strand, and the plurality of inner-layer strands are uniformly distributed along the circumferential direction, and the central strand is located at the center of the plurality of inner-layer strands.
[0008] The central strand and the plurality of inner-layer strands are both made of seven steel wires, and the arrangement of the steel wires from inside to outside is 1-6.
[0009] The outer-layer wires of the plurality of outer-layer strands are in line contact with the outer-layer wires of the inner-layer strands of the steel core.
[0010] The number of the inner-layer strands is seven, and the inner-layer strands are spirally wound on the outer wall of the central strand.
[0011] The number of the outer-layer strands is seven, and the outer-layer strands are spirally wound on the outer side of the steel core.
[0012] The outer-layer strands are made of thirty-six steel wires, and the arrangement of the steel wires from inside to outside is 1-7-7 / 7-14.
[0013] The structure of the outer-layer rope is 7x36WS:IWRC.
[0014] Compared with the prior art, the utility model has the beneficial effects that:
[0015] (1) The novel steel wire rope for port machine is different from the traditional 6x36WS and 8x36 structure steel wire rope, and the 7x36WS steel wire rope has better wear resistance and softness, so that the single-layer strand steel wire rope not only improves the bending fatigue performance, but also meets the wear resistance requirement.
[0016] (2) The novel steel wire rope for port machinery provided by the utility model meets the bending fatigue performance and wear resistance, and the breaking tension of the steel wire rope is not reduced.
[0017] (3) The novel steel wire rope for port machinery provided by the utility model has a more stable 7x36WS type steel wire rope structure. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a structural schematic view of the novel steel wire rope for port machinery of the utility model;
[0019] Figure 2 is a structural schematic view of a steel core of the utility model;
[0020] Figure 3 is a structural schematic view of an outer layer strand of the steel wire rope of the utility model;
[0021] Figure 4 is a structural schematic view of an inner layer strand of the steel core of the utility model.
[0022] In the figure, 1 is an outer layer strand of the steel wire rope, 2 is a steel core, 3 is a center strand of the steel core, and 4 is an inner layer strand of the steel core. DETAILED DESCRIPTION
[0023] The utility model will be described in detail below in combination with the drawings and specific embodiments.
[0024] The utility model provides a novel steel wire rope for port machinery, like Figure 1 as shown, which comprises an outer layer rope and a steel core 2, the outer layer rope is composed of a plurality of outer layer strands 1 of steel wire rope, the plurality of outer layer strands 1 of steel wire rope is uniformly distributed along the circumferential direction, and the steel core 2 is located at the center surrounded by the plurality of outer layer strands 1 of steel wire rope. Figure 2 As shown, the steel core 2 comprises a plurality of inner layer strands 4 of steel core and a center strand 3 of steel core, the plurality of inner layer strands 4 of steel core is uniformly distributed along the circumferential direction, and the center strand 3 of steel core is located at the center surrounded by the plurality of inner layer strands 4 of steel core. The outer and inner layer ropes are twisted twice, the twisting directions are the same, the steel wire rope is alternately twisted, and the steel core is twisted in the same direction. The steel core is first produced on a rope combining machine, and then the steel wire rope is produced, so that the 7x36WS:IWRC steel wire rope is produced, and the steel wire strength is 1770MPa~2160MPa.
[0025] Among them, like Figure 1 and Figure 3As shown in the figure, the steel wire rope includes several outer layer strands 1 and a steel core 2, and the structure is 7x36 WS:IWRC. The outer layer rope is twisted by several strands, which are spirally wound outside the steel core 2. During the rope twisting, the steel core 2 is taken as the center, and the outer layer strands 1 are spirally and tightly wound on the steel core 2 according to certain twisting parameters, and are twisted once to ensure that the outer layer wires of the outer layer strands and the outer layer wires of the inner layer strands of the steel core are in line contact. The outer layer strands 1 are twisted once by thirty-six steel wires, and the arrangement of the steel wires from inside to outside is 1-7-7 / 7-14.
[0026] As shown in the figure, Figure 2 and Figure 4 As shown in the figure, the steel core includes a core center strand 3 and several inner layer strands 4, and the structure is 7x7-WSC. The several inner layer strands 4 are uniformly distributed on the same circumference. During the rope twisting, the core center strand 3 is taken as the center, and the inner layer strands 4 are spirally and tightly wound on the core center strand 3 according to certain twisting parameters, and are twisted once. The twisting direction is the same as that of the outer layer rope. The core center strand 3 and the several inner layer strands 4 are both twisted once by seven steel wires, and the arrangement of the steel wires from inside to outside is 1-6. The number of the inner layer strands 4 is the same as that of the outer layer strands 1 of the steel wire rope, which can increase the contact area between the steel core 2 and the outer layer strands 1 of the steel wire rope and reduce the contact stress.
[0027] Example 1
[0028] This embodiment provides a new type of steel wire rope for port machinery, which, as shown in the figure, Figure 1 includes an outer layer rope and a steel core 2. The outer layer rope is composed of several outer layer strands 1, and the several outer layer strands 1 are uniformly distributed along the circumferential direction. The steel core 2 is located in the center surrounded by the several outer layer strands 1.
[0029] Example 2
[0030] This embodiment provides a new type of steel wire rope for port machinery, which, as shown in the figure, Figures 1-2 includes an outer layer rope and a steel core 2. The outer layer rope is composed of several outer layer strands 1, and the several outer layer strands 1 are uniformly distributed along the circumferential direction. The steel core 2 is located in the center surrounded by the several outer layer strands 1. The steel core 2 includes several inner layer strands 4 and a core center strand 3. The several inner layer strands 4 are uniformly distributed along the circumferential direction, and the core center strand 3 is located in the center surrounded by the several inner layer strands 4.
[0031] Example 3
[0032] This embodiment provides a new type of steel wire rope for port machinery, which, as shown in the figure, Figures 1-2As shown, it comprises an outer rope and a steel core 2, the outer rope is composed of a plurality of outer strands 1, the plurality of outer strands 1 are evenly distributed in the circumferential direction, the steel core 2 is located in the center surrounded by the plurality of outer strands 1, the steel core 2 comprises a plurality of inner strands 4 and a core strand 3, the plurality of inner strands 4 are evenly distributed in the circumferential direction, the core strand 3 is located in the center surrounded by the plurality of inner strands 4, the core strand 3 and the plurality of inner strands 4 are each made of seven steel wires once twisted, the arrangement of the steel wires from inside to outside is 1-6, the outer wires of the plurality of outer strands 1 and the outer wires of the plurality of inner strands 4 are in line contact.
[0033] Example 4
[0034] The present embodiment provides a new type of steel wire rope for port machinery, which comprises an outer rope and a steel core 2, the outer rope is composed of a plurality of outer strands 1, the plurality of outer strands 1 are evenly distributed in the circumferential direction, the steel core 2 is located in the center surrounded by the plurality of outer strands 1, the steel core 2 comprises a plurality of inner strands 4 and a core strand 3, the plurality of inner strands 4 are evenly distributed in the circumferential direction, the core strand 3 is located in the center surrounded by the plurality of inner strands 4, the core strand 3 and the plurality of inner strands 4 are each made of seven steel wires once twisted, the arrangement of the steel wires from inside to outside is 1-6, the outer wires of the plurality of outer strands 1 and the outer wires of the plurality of inner strands 4 are in line contact. Figures 1-4 Example 5
[0035] The present embodiment provides a new type of steel wire rope for port machinery, which comprises an outer rope and a steel core 2, the outer rope is composed of a plurality of outer strands 1, the plurality of outer strands 1 are evenly distributed in the circumferential direction, the steel core 2 is located in the center surrounded by the plurality of outer strands 1, the steel core 2 comprises a plurality of inner strands 4 and a core strand 3, the plurality of inner strands 4 are evenly distributed in the circumferential direction, the core strand 3 is located in the center surrounded by the plurality of inner strands 4, the core strand 3 and the plurality of inner strands 4 are each made of seven steel wires once twisted, the arrangement of the steel wires from inside to outside is 1-6, the outer wires of the plurality of outer strands 1 and the outer wires of the plurality of inner strands 4 are in line contact.
[0036] Figures 1-4 Example 6
[0037] The present embodiment provides a new type of steel wire rope for port machinery, which comprises an outer rope and a steel core 2, the outer rope is composed of a plurality of outer strands 1, the plurality of outer strands 1 are evenly distributed in the circumferential direction, the steel core 2 is located in the center surrounded by the plurality of outer strands 1, the steel core 2 comprises a plurality of inner strands 4 and a core strand 3, the plurality of inner strands 4 are evenly distributed in the circumferential direction, the core strand 3 is located in the center surrounded by the plurality of inner strands 4, the core strand 3 and the plurality of inner strands 4 are each made of seven steel wires once twisted, the arrangement of the steel wires from inside to outside is 1-6, the outer wires of the plurality of outer strands 1 and the outer wires of the plurality of inner strands 4 are in line contact.
[0038] The present embodiment provides a new type of steel wire rope for port machinery, which comprises an outer rope and a steel core 2, the outer rope is composed of a plurality of outer strands 1, the plurality of outer strands 1 are evenly distributed in the circumferential direction, the steel core 2 is located in the center surrounded by the plurality of outer strands 1, the steel core 2 comprises a plurality of inner strands 4 and a core strand 3, the plurality of inner strands 4 are evenly distributed in the circumferential direction, the core strand 3 is located in the center surrounded by the plurality of inner strands 4, the core strand 3 and the plurality of inner strands 4 are each made of seven steel wires once twisted, the arrangement of the steel wires from inside to outside is 1-6, the outer wires of the plurality of outer strands 1 and the outer wires of the plurality of inner strands 4 are in line contact. Figures 1-4 As shown, the structure includes an outer rope and a steel core 2. The outer rope is composed of several outer strands 1 of steel wire rope, which are evenly distributed along the circumference. The steel core 2 is located at the center surrounded by the outer strands 1. The steel core 2 includes several inner strands 4 and a central strand 3. The inner strands 4 are evenly distributed along the circumference, and the central strand 3 is located at the center surrounded by the inner strands 4. Both the central strand 3 and the inner strands 4 consist of seven steel wire ropes. The wires are twisted together in one go. The steel wires are arranged in a 1-6 pattern from the inside out. The outer strands of several outer strands 1 of the steel rope are in line contact with the outer strands of the inner strands 4 of the steel core. There are 7 strands of inner strand 4 of the steel core, which are spirally wound around the outer wall of the central strand 3 of the steel core. There are 7 strands of outer strand 1 of the steel rope, which are spirally wound around the outside of the steel core 2. Each outer strand 1 of the steel rope is made of 36 steel wires twisted together in one go. The steel wires are arranged in a 1-7-7 / 7-14 pattern from the inside out.
[0039] Example 7
[0040] This embodiment provides a new type of steel wire rope for port machinery, such as... Figures 1-4 As shown, it includes an outer rope and a steel core 2. The outer rope is composed of several outer strands 1 of steel wire rope, which are evenly distributed along the circumference. The steel core 2 is located at the center surrounded by the outer strands 1. The steel core 2 includes several inner strands 4 and a central strand 3. The inner strands 4 are evenly distributed along the circumference, and the central strand 3 is located at the center surrounded by the inner strands 4. Both the central strand 3 and the inner strands 4 are made by twisting seven steel wires together in one operation. The wires are arranged in a 1-6 pattern from the inside out. The outer wires of several outer strands 1 of the wire rope are in line contact with the outer wires of the inner strands 4 of the steel core. There are 7 strands of inner strand 4 of the steel core, which are spirally wound around the outer wall of the central strand 3 of the steel core. There are 7 outer strands 1 of the wire rope, which are spirally wound around the outside of the steel core 2. Each outer strand 1 of the wire rope is made of 36 wires twisted together at one time. The wires are arranged in a 1-7-7 / 7-14 pattern from the inside out. The outer rope structure is 7×36WS:IWRC.
[0041] Example 8
[0042] like Figure 1 As shown, it includes an outer rope and a steel core 2. The outer rope consists of 7 outer strands 1 of steel wire rope, which are evenly distributed along the circumference. The steel core 2 is located at the center surrounded by the outer strands 1. Figure 2As shown in the drawings, the steel core 2 includes 7 steel core inner layer strands 4 and a steel core center strand 3, the 7 steel core inner layer strands 4 are uniformly distributed in the circumferential direction, and the steel core center strand 3 is located in the center surrounded by the several steel core inner layer strands 4. Figure 1 and Figure 3 As shown in the drawings, the steel wire rope includes 7 outer layer strands and a steel core 2, and the structure is 7x36WS:IWRC, the steel wire rope outer layer strand 1 is twisted by 7 strands, and is spirally wound outside the steel core 2; during rope combining, the steel core 2 serves as the center, and the steel wire rope outer layer strand 1 is tightly wound on the steel core 2 in a spiral shape according to certain twisting parameters, and is twisted once to ensure that the outer layer wires of the steel wire rope outer layer strand and the outer layer wires of the steel core inner layer strand are in linear contact; the steel wire rope outer layer strand 1 is twisted once by thirty-six steel wires, and the arrangement of the steel wires from inside to outside is 1-7-7 / 7-14.
[0043] As shown in the drawings, Figure 2 and Figure 4 As shown in the drawings, the steel core 2 includes a steel core center strand 3 and 7 steel core inner layer strands 4, and the structure is 7x7-WSC; the 7 steel core inner layer strands 4 are uniformly distributed on the same circle. During rope combining, the steel core center strand 3 serves as the center, and the steel core inner layer strands 4 are tightly wound on the center strand 3 in a spiral shape according to certain twisting parameters, and are twisted once; the twisting direction is the same as that of the outer layer rope; the steel core center strand 3 and the 7 steel core inner layer strands 4 are both twisted once by seven steel wires, and the arrangement of the steel wires from inside to outside is 1-6; the number of the steel core inner layer strands 4 is the same as that of the steel wire rope outer layer strand 1, which can increase the contact area of the steel core 2 and the steel wire rope outer layer strand 1 and reduce the contact stress.
[0044] The novel port machine steel wire rope is different from the traditional single-layer strand 6x36WS type and 8x36 type structure steel wire rope, the 7x36WS type steel wire rope is more flexible and has better wear resistance, so that the single-layer strand steel wire rope not only improves the bending fatigue performance, but also meets the wear resistance requirement.
Claims
1. A new type of steel wire rope for port machinery, characterized by, The utility model provides a kind of steel wire rope, including outer layer rope and steel core (2), the outer layer rope is made of several steel wire rope outer layer strands (1), several steel wire rope outer layer strands (1) are evenly distributed along the circumferential direction, the steel core (2) is located in the center surrounded by several steel wire rope outer layer strands (1);The steel core (2) includes several steel core inner layer strands (4) and a steel core center strand (3), several steel core inner layer strands (4) are evenly distributed along the circumferential direction, the steel core center strand (3) is located in the center surrounded by several steel core inner layer strands (4);The steel core center strand (3) and several steel core inner layer strands (4) are made of seven steel wires once, and the arrangement of steel wire from inside to outside is 1-6;The outer layer silk of several steel wire rope outer layer strands (1) and the outer layer silk of steel core inner layer strand (4) are in line contact;The number of steel core inner layer strand (4) is 7, and it is spirally wound on the outer wall of steel core center strand (3);The number of steel wire rope outer layer strand (1) is 7, and it is spirally wound on the outside of steel core (2);Each steel wire rope outer layer strand (1) is made of thirty-six steel wires once, and the arrangement of steel wire from inside to outside is 1-7-7 / 7-14;The structure of outer layer rope is 7×36WS:IWRC.