JP7613475B2 - Ropes, rope structures - Google Patents

Description

The present disclosure relates to high-strength fiber assemblies, ropes, and rope structures.

Patent document 1 discloses an elevator rope. The rope has a core material that can reduce the gaps between multiple high-strength fiber filaments.

Japanese Patent No. 6452839

However, in the rope described in Patent Document 1, the multiple high-strength fiber filaments are not constrained to each other. Therefore, if the amount of high-strength fiber filling is increased, when a load is applied to the rope, the load is not transmitted to the high-strength fiber filaments close to the center of the rope. As a result, the strength of the rope cannot be increased.

The present disclosure has been made to solve the above-mentioned problems. The purpose of the present disclosure is to provide a high-strength fiber assembly, rope, and rope structure that can further increase strength.

The rope according to the present disclosure comprises a high-strength fiber assembly having a plurality of high-strength fiber filaments, each of which is a fibrous monofilament, the plurality of high-strength fiber filaments being maintained in a bundled state with their longitudinal directions aligned with each other, and the cross-sectional shape of the plurality of high-strength fiber filaments in the bundled state is a shape having sides facing in a radial direction perpendicular to the longitudinal direction , and is a sector shape or a shape in which a more central sector shape is removed from a sector shape of a preset size .

The rope structure according to the present disclosure comprises a plurality of linear structures each formed from the rope, and a covering structure that covers the plurality of linear structures with the linear structures aligned horizontally with their longitudinal directions aligned.

According to the present disclosure, multiple high-strength fiber filaments are maintained in a bundled state. The multiple high-strength fiber filaments are processed into a profile. This can further increase the strength of the high-strength fiber assembly.

FIG. 2 is an example of a configuration diagram of an elevator to which the rope in the first embodiment is applied. FIG. 2 is a cross-sectional view of the rope in the first embodiment. FIG. 2 is a side view of a high-strength fiber assembly of the rope in the first embodiment. FIG. 2 is an enlarged cross-sectional view of a high-strength fiber aggregate of the rope in the first embodiment. FIG. 11 is a side view of a first modified example of a high-strength fiber assembly of the rope in the first embodiment. FIG. 11 is a side view of a second modified example of the high-strength fiber assembly of the rope in the first embodiment. FIG. 11 is a side view of a high-strength fiber assembly of a rope in a second embodiment. FIG. 11 is a side view of a modified example of the high-strength fiber assembly of the rope in the second embodiment. FIG. 11 is a side view of a high-strength fiber assembly of a rope in embodiment 3. FIG. 13 is a side view of a modified example of the high-strength fiber assembly of the rope in embodiment 3. FIG. 13 is a cross-sectional view of a rope in embodiment 4. FIG. 13 is a cross-sectional view of a modified example of the rope in embodiment 4. A cross-sectional view of a rope in embodiment 5. A cross-sectional view of a modified example of the rope in embodiment 5. A cross-sectional view of a rope in embodiment 6. A cross-sectional view of a rope in embodiment 7. A cross-sectional view of a modified example of the rope in embodiment 7. FIG. 23 is a cross-sectional view of a rope in embodiment 8. A cross-sectional view of a rope in embodiment 9. A cross-sectional view of a rope in embodiment 10. A cross-sectional view of a rope in embodiment 11. A cross-sectional view of a rope in embodiment 12. A cross-sectional view of a rope in embodiment 13. A cross-sectional view of a rope in embodiment 14. A cross-sectional view of a modified example of the rope in embodiment 14. A cross-sectional view of a rope in embodiment 15. A cross-sectional view of a rope structure in embodiment 16. A cross-sectional view of a modified example of a rope structure in embodiment 16.

The embodiments will be described with reference to the attached drawings. In each drawing, the same or corresponding parts are given the same reference numerals. Duplicate explanations of the parts will be appropriately simplified or omitted.

Embodiment 1.
FIG. 1 is a diagram showing an example of the configuration of an elevator to which a rope according to the first embodiment is applied.

In the elevator of Figure 1, the hoistway 1 runs through each floor of the building. The machine room 2 is located directly above the hoistway 1.

The hoisting machine 3 is provided in the machine room 2. The sheave 4 is attached to the rotating shaft of the hoisting machine 3. A plurality of ropes 5 are wound in a line around the outer circumferential surface of the sheave 4 as a plurality of hoisting ropes.

The car 6 is provided inside the hoistway 1. The car 6 is supported on one side of the multiple ropes 5. The counterweight 7 is provided inside the hoistway 1. The counterweight 7 is supported on the other side of the multiple ropes 5.

The hoist 3 is driven based on commands from a control device (not shown). The sheave 4 rotates following the drive of the hoist 3. The rope 5 moves following the rotation of the sheave 4. The cage 6 and counterweight 7 rise and fall in opposite directions following the movement of the rope 5.

Next, the rope 5 will be described with reference to FIG.
FIG. 2 is a cross-sectional view of the rope in the first embodiment.

As shown in Figure 2, the rope 5 comprises a core material 8 and a plurality of first steel materials 9.

The core material 8 is a high-strength fiber assembly. The core material 8 is processed into a special shape.

For example, each of the multiple first steel materials 9 is a steel wire strand. The multiple first steel materials 9 are each arranged on the outer periphery of the core material 8. For example, the multiple first steel materials 9 are twisted together with the core material 8 at the center.

The core material 8 and the multiple first steel materials 9 share the load in the tensile direction of the rope 5.

Next, the high-strength fiber assembly will be described with reference to FIG. 3 and FIG.
Fig. 3 is a side view of the high-strength fiber aggregate of the rope in embodiment 1. Fig. 4 is an enlarged cross-sectional view of the high-strength fiber aggregate of the rope in embodiment 1.

3, the high-strength fiber assembly includes a plurality of high-strength fiber filaments 10. For example, the number of the high-strength fiber filaments 10 is several hundred to tens of thousands. For example, the number of the high-strength fiber filaments 10 is tens of thousands. For example, the outer diameter of the high-strength fiber filaments 10 is several μm to tens of μm.

The multiple high-strength fiber filaments 10 are maintained in a bundled state. For example, the multiple high-strength fiber filaments 10 are maintained in a state in which their longitudinal directions are aligned with each other. In FIG. 3, the orientation of the high-strength fiber filaments 10 is indicated by solid lines. In this state, the multiple high-strength fiber filaments 10 are deformed so that their cross sections have a preset shape. For example, the multiple high-strength fiber filaments 10 are deformed so that their cross sections have a circular shape.

As shown in FIG. 4, multiple high-strength fiber filaments 10 are maintained in a filled state inside the matrix resin 11.

When the cross section of the long high-strength fiber aggregate is to be formed into a preset shape, first, the multiple high-strength fiber filaments 10 are impregnated with a liquid matrix resin 11 before curing. Then, the multiple high-strength fiber filaments 10 are aligned inside a metal mold having a preset shape. Then, the multiple high-strength fiber filaments 10 are pulled out of the metal mold. Inside the metal mold, the multiple high-strength fiber filaments 10 are continuously heated. At this time, the matrix resin 11 in the multiple high-strength fiber filaments 10 is cured by heating.

According to the first embodiment described above, the multiple high-strength fiber filaments 10 are maintained in a bundled state. For example, the multiple high-strength fiber filaments 10 are maintained in a state in which their longitudinal directions are aligned with each other. The multiple high-strength fiber filaments 10 are processed into a deformed shape. This allows the multiple high-strength fiber filaments 10 to be maintained in a state in which their density is increased. As a result, the strength of the high-strength fiber aggregate can be further increased.

Specifically, the multiple high-strength fiber filaments 10 are maintained in a state filled inside the matrix resin 11. Therefore, the multiple high-strength fiber filaments 10 can be easily maintained in a bundled state. As a result, the rope 5 can be easily and inexpensively manufactured without the multiple high-strength fiber filaments 10 losing their shape.

The flexible resin may be used as the matrix resin 11. Specifically, the matrix resin 11 may be a resin that is flexible and bends without easily breaking when subjected to an external force. In this case, the flexibility of the rope 5 can be ensured. As a result, the flexibility of the rope 5 can be ensured.

For example, a thermosetting epoxy resin or a thermosetting urethane resin may be used as the flexible resin.

For example, in the case of a thermosetting epoxy resin, a liquid base material containing one or more of polyoxyalkylene bonds, urethane bonds, and butadiene rubber in the molecule and two or more epoxy groups in the molecule can be used. The base material and a curing agent can be mixed and then heated to cure the epoxy resin.

For example, from the viewpoint of hydrolysis resistance, an ether-based urethane may be used as a thermosetting urethane resin. For example, an ether-based polyol such as polytetramethylene ether glycol or polypropylene glycol may be cured with various polyisocyanate compounds.

These resins make it easy to maintain the high-strength fiber aggregate in a preset shape. This ensures adhesion between the multiple high-strength fiber filaments 10. As a result, the flexibility of the rope 5 can be ensured after the resin has hardened.

In addition, if there are no manufacturing issues, thermoplastic resin may be used as the flexible resin.

Next, a first modified example of the high-strength fiber aggregate will be described with reference to FIG.
FIG. 5 is a side view of a first modified example of the high-strength fiber assembly of the rope in the first embodiment.

As shown in Figure 5, the high-strength fiber aggregate is a high-strength fiber yarn 12. In the high-strength fiber yarn 12, multiple high-strength fiber filaments 10 are maintained in a state of being twisted together. In Figure 5, the orientation of the high-strength fiber filaments 10 is shown by solid lines. In this state, the multiple high-strength fiber filaments 10 are processed into a profile.

For example, when the cross section of a long high-strength fiber aggregate is to be made circular, first, the high-strength fiber yarn 12 is impregnated with the liquid matrix resin 11 before hardening. The high-strength fiber yarn 12 is then squeezed. As a result, excess matrix resin 11 is removed. In this state, the high-strength fiber yarn 12 is continuously heated. As a result, the matrix resin 11 hardens in the high-strength fiber yarn 12. At this time, the cross section of the high-strength fiber aggregate naturally becomes circular. In this case, the fiber content of the high-strength fiber yarn 12 is higher than the fiber content of the high-strength fiber aggregate in FIG. 4. The mass specific strength of the high-strength fiber yarn 12 is higher than the mass specific strength of the high-strength fiber aggregate in FIG. 4.

For example, when the cross section of a long high-strength fiber aggregate is to be formed into a shape other than a circle, the high-strength fiber yarn 12 is first impregnated with liquid matrix resin 11 before hardening. The high-strength fiber yarn 12 is then fed into a mold of a preset shape. At this time, the high-strength fiber yarn 12 is continuously heated inside the mold. As a result, the matrix resin 11 hardens in the high-strength fiber yarn 12.

According to the first modified example described above, the multiple high-strength fiber filaments 10 are maintained in a twisted state. This makes it possible to easily and inexpensively manufacture a high-strength fiber aggregate that is more flexible.

In this case, when the high-strength fiber aggregate is bent, localized stress due to compression or tension is unlikely to occur in the multiple high-strength fiber filaments 10. This makes it possible to prevent the high-strength fiber aggregate from buckling. As a result, the fatigue durability of the high-strength fiber aggregate can be improved. Furthermore, the increased fatigue durability of the high-strength fiber aggregate can improve the fatigue durability of the rope 5.

In addition, by subjecting the high-strength fiber yarn 12 to deformed processing, the multiple high-strength fiber filaments 10 share the load more evenly. This allows the high-strength fiber assembly to support a larger load.

Next, a second modified example of the high-strength fiber aggregate will be described with reference to FIG.
FIG. 6 is a side view of a second modified example of the high-strength fiber assembly of the rope in the first embodiment.

As shown in FIG. 6, the high-strength fiber assembly is a high-strength fiber strand 13. In the high-strength fiber strand 13, multiple high-strength fiber yarns 12 are twisted together. For example, in FIG. 6, six high-strength fiber yarns 12 are twisted together around one high-strength fiber yarn 12. Although not shown in FIG. 6, multiple high-strength fiber filaments 10 are twisted together in the high-strength fiber yarn 12. In this state, the high-strength fiber strand 13 is processed into a profile.

In FIG. 6, the boundaries between adjacent high-strength fiber yarns 12 are shown by solid lines. In reality, such boundaries are often not visible.

According to the second modified example described above, multiple high-strength fiber yarns 12 are twisted together. This allows the load to be shared across the entire high-strength fiber strand 13.

In addition, by twisting together multiple high-strength fiber yarns 12 to form the high-strength fiber strand 13, the overall strength of the high-strength fiber strand 13 or rope 5 is ensured even if there are joints in the high-strength fiber yarns 12. For this reason, the high-strength fiber yarns 12 do not need to be connected seamlessly over the entire length of the rope 5. In this case, there is no need to prepare high-strength fiber filaments 10 with a length corresponding to the length of the rope 5. As a result, the manufacturing cost of the high-strength fiber yarns 12 can be reduced.

Embodiment 2.
7 is a side view of a high-strength fiber assembly of a rope in embodiment 2. Note that the same or corresponding parts as those in embodiment 1 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 7, the high-strength fiber assembly includes a plurality of high-strength fiber yarns 12. Although not shown in FIG. 7, in each of the plurality of high-strength fiber yarns 12, the plurality of high-strength fiber filaments 10 are maintained in a state twisted together. For example, the plurality of high-strength fiber filaments 10 are maintained in a state twisted together with a first matrix resin. In this state, the plurality of high-strength fiber yarns 12 are each deformed so that their cross sections are circular.

The multiple high-strength fiber yarns 12 are maintained in a bundled state. Specifically, the multiple high-strength fiber yarns 12 are maintained in a state in which their longitudinal directions are aligned with each other. For example, the multiple high-strength fiber yarns 12 are maintained in a state in which their longitudinal directions are aligned with each other by the second matrix resin. The multiple high-strength fiber yarns 12 are deformed. For example, the multiple high-strength fiber yarns 12 are deformed so that their cross sections have a trapezoidal shape. Specifically, the cross-sectional shape is a shape in which the central sector is removed from a sector of a preset size.

For example, when the cross section of a long high-strength fiber assembly is to be formed into a preset shape, the multiple high-strength fiber yarns 12 are each formed in the same manner as in the modified example of the first embodiment. The multiple high-strength fiber yarns 12 are then wound onto multiple bobbins or the like. The multiple high-strength fiber yarns 12 are then pulled out from the multiple bobbins or the like. The multiple high-strength fiber yarns 12 are then impregnated with a second matrix resin. The multiple high-strength fiber yarns 12 are then bundled together with their longitudinal directions aligned. The multiple high-strength fiber yarns 12 are then drawn into a mold having a preset shape. The multiple high-strength fibers are then wound onto multiple bobbins or the like.
The yarns 12 are continuously heated within the mold, so that the second matrix resin hardens in the plurality of high strength fiber yarns 12.

For example, when the second matrix resin is a thermoplastic resin, the multiple high-strength fiber yarns 12 are drawn into the mold with their longitudinal directions aligned with each other. In this state, the multiple high-strength fiber yarns 12 are impregnated with the molten second matrix resin. The multiple high-strength fiber yarns 12 are then pulled out of the mold. The multiple high-strength fiber yarns 12 are then cooled. As a result, the second matrix resin hardens in the multiple high-strength fiber yarns 12.

According to the second embodiment described above, the multiple high-strength fiber yarns 12 are maintained in a bundled state. Specifically, the multiple high-strength fiber yarns 12 are maintained in a state in which their longitudinal directions are aligned with each other. This allows the high-strength fiber assembly to support a larger load.

The first matrix resin and the second matrix resin are appropriately selected. For example, the first matrix resin may be the same as the matrix resin 11 in FIG. 3.

The first matrix resin needs to be impregnated into the high-strength fiber filaments 10, each of which has an outer diameter of several μm to several tens of μm. Therefore, the first matrix resin needs to have a low viscosity before curing. In contrast, the second matrix resin only needs to be impregnated into multiple high-strength fiber yarns 12. Therefore, the second matrix resin needs to have a higher viscosity than the first matrix resin before curing.

Next, a modified example of the high-strength fiber aggregate will be described with reference to FIG.
FIG. 8 is a side view of a modified example of the high-strength fiber assembly of the rope in the second embodiment.

As shown in FIG. 8, the multiple high strength fiber yarns 12 are maintained in a twisted state with each other. The multiple high strength fiber yarns 12 are profiled.

For example, when the cross section of the long high-strength fiber body is to be formed into a preset shape, the high-strength fiber yarns 12 are each formed in the same manner as in the modified example of the first embodiment. Then, the high-strength fiber yarns 12 are each wound around a plurality of bobbins or the like. Then, the high-strength fiber yarns 12 are each pulled out from the plurality of bobbins or the like. Then, the high-strength fiber yarns 12 are twisted together. Then, the high-strength fiber yarns 12 are impregnated with a second matrix resin. Then, the high-strength fiber yarns 12 are drawn into a mold having a preset shape. At this time, the high-strength fiber yarns 12 are continuously heated inside the mold. As a result, the second resin hardens in the high-strength fiber yarns 12.

For example, when the second matrix resin is a thermoplastic resin, the multiple high-strength fiber yarns 12 are pulled into the mold while twisted together. In this state, the multiple high-strength fiber yarns 12 are impregnated with the molten second matrix resin. The multiple high-strength fiber yarns 12 are then pulled out of the mold. The multiple high-strength fiber yarns 12 are then cooled. As a result, the second matrix resin hardens in the multiple high-strength fiber yarns 12.

According to the modified example described above, the multiple high-strength fiber yarns 12 are maintained in a twisted state. This prevents the high-strength fiber aggregate from losing its shape during its manufacture. Furthermore, even if the rope 5 is repeatedly bent, the high-strength fiber aggregate can be prevented from losing its shape.

Embodiment 3.
9 is a side view of a high-strength fiber assembly of a rope in embodiment 3. Note that the same or corresponding parts as those in embodiment 1 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 9, the high-strength fiber assembly includes a plurality of high-strength fiber strands 13. In each of the plurality of high-strength fiber strands 13, a plurality of high-strength fiber yarns 12 are twisted together. In each of the plurality of high-strength fiber yarns 12, a plurality of high-strength fiber filaments 10 are twisted together.

The multiple high-strength fiber strands 13 are maintained in a state in which their longitudinal directions are aligned with each other. The multiple high-strength fiber strands 13 are deformed. For example, the multiple high-strength fiber strands 13 are deformed with a matrix resin 11. In Figure 9, seven high-strength fiber strands 13 are deformed so that the overall cross section is trapezoidal.

In Figure 9, the boundaries between adjacent high-strength fiber strands 13 are shown by solid lines. In reality, such boundaries are often not visible.

According to the third embodiment described above, the multiple high-strength fiber strands 13 are maintained in a state in which their longitudinal directions are aligned with each other. The multiple high-strength fiber strands 13 are processed into a deformed shape. This allows the outer diameter of the high-strength fiber assembly to be made larger. As a result, the outer diameter of the rope 5 can be made larger. The breaking strength of the rope 5 can be increased.

Next, a modified example of the high-strength fiber aggregate will be described with reference to FIG.
FIG. 10 is a side view of a modified example of the high-strength fiber assembly of the rope in the third embodiment.

As shown in FIG. 10, the multiple high-strength fiber strands 13 are maintained in a twisted state. The multiple high-strength fiber strands 13 are deformed. For example, the multiple high-strength fiber strands 13 are deformed with a matrix resin 11. In FIG. 10, six high-strength fiber strands 13 are twisted with one high-strength fiber strand 13 at the center. Seven high-strength fiber strands 13 are deformed so that the overall cross section is trapezoidal.

In FIG. 10, the boundaries between adjacent high-strength fiber strands 13 are shown by solid lines. In reality, such boundaries are often not visible.

According to the modified example described above, the multiple high-strength fiber strands 13 are maintained in a twisted state. The multiple high-strength fiber strands 13 are deformed. This makes it possible to prevent the high-strength fiber aggregate from losing its shape after the multiple high-strength fiber strands 13 are deformed. Furthermore, the load can be shared more evenly among the multiple high-strength fiber strands 13 than in the case where the multiple high-strength fiber strands 13 are deformed with their longitudinal directions aligned with each other.

Embodiment 4.
Fig. 11 is a cross-sectional view of a rope in embodiment 4. Note that the same or corresponding parts as those in embodiment 1 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in Figure 11, the core material 8 is deformed by twisting together linear bodies each formed from a plurality of high-strength fiber assemblies. In Figure 11, six high-strength fiber assemblies are formed by twisting together high-strength fiber assemblies with one high-strength fiber aggregate at the center. The central high-strength fiber aggregate has a circular cross section. The surrounding six high-strength fiber assemblies each have a trapezoidal cross section. In this state, the core material 8 is deformed.

According to the fourth embodiment described above, the core material 8 is formed by twisting together multiple linear bodies each made of a high-strength fiber aggregate to form a deformed shape. This increases the flexibility of the rope 5.

Next, a modified example of the rope 5 will be described with reference to FIG.
FIG. 12 is a cross-sectional view of a modified example of the rope in the fourth embodiment.

In Figure 12, the core material 8 is formed by twisting together six high-strength fiber aggregates that have been deformed into a fan shape. In this state, the core material 8 is deformed.

According to the modified example described above, the core material 8 is formed by twisting together six high-strength fiber aggregates that have been processed into a fan shape. In this case, the flexibility of the rope 5 can be increased without requiring multiple types of high-strength fiber aggregates.

Embodiment 5.
Fig. 13 is a cross-sectional view of a rope in embodiment 5. Note that the same or corresponding parts as those in the modified example of embodiment 4 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 13, the rope 5 comprises a plurality of first fiber aggregates 16 and a plurality of second steel materials 17.

The first fiber aggregates 16 are each formed by twisting together a plurality of high-strength fiber aggregates. The first fiber aggregates 16 are each arranged on the outside of the first steel materials 9.

Each of the plurality of second steel materials 17 is a steel wire strand. The plurality of second steel materials 17 are arranged on the outside of the plurality of first fiber aggregates 16, respectively.

According to the fifth embodiment described above, layers of high-strength fiber aggregate and layers of steel are alternately provided from the center of the cross section of the rope 5 toward the outside. This allows the outer diameter of the rope 5 to be increased without increasing the outer diameter of the high-strength fiber aggregate and the outer diameter of the steel. As a result, the breaking strength of the rope 5 can be increased without sacrificing the flexibility of the rope 5.

Next, a modified example will be described with reference to FIG.
FIG. 14 is a cross-sectional view of a modified example of the rope in the fifth embodiment.

In the core material 8 of Fig. 14, the multiple high-strength fiber assemblies are each formed of an assembly equivalent to the high-strength fiber assemblies shown in Fig. 7 or 8. For example, in the core material 8, the multiple high-strength fiber assemblies each have a sector-like cross section. For example, the multiple first fiber assemblies 16 each have a trapezoidal cross section.

According to the modified example described above, layers of high-strength fiber aggregate and layers of steel are alternately arranged from the center of the cross section of the rope 5 toward the outside. This allows the outer diameter of the rope 5 to be increased without increasing the outer diameter of the high-strength fiber aggregate and the outer diameter of the steel. As a result, the breaking strength of the rope 5 can be increased without sacrificing the flexibility of the rope 5.

Embodiment 6.
Fig. 15 is a cross-sectional view of a rope in embodiment 6. Note that the same or corresponding parts as those in embodiment 5 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 15, the rope 5 comprises a plurality of second fiber aggregates 18 and a plurality of third steel materials 19.

The second fiber aggregates 18 are each formed by twisting together a plurality of high-strength fiber aggregates. The second fiber aggregates 18 are each arranged on the outside of the second steel materials 17.

Each of the multiple third steel materials 19 is a steel wire strand. The multiple third steel materials 19 are arranged on the outside of the multiple first fiber aggregates 16, respectively.

According to the sixth embodiment described above, layers of high-strength fiber aggregate and layers of steel are alternately provided from the center of the cross section of the rope 5 toward the outside. This allows the outer diameter of the rope 5 to be increased without increasing the outer diameter of the high-strength fiber aggregate and the outer diameter of the steel. As a result, the breaking strength of the rope 5 can be increased without sacrificing the flexibility of the rope 5.

It is also possible to alternate between more layers of high-strength fiber composite material and more layers of steel material.

Embodiment 7.
Fig. 16 is a cross-sectional view of a rope in embodiment 7. Note that the same or corresponding parts as those in embodiment 1 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 16, the rope 5 comprises a core material 8, a plurality of first fiber aggregates 16, and a plurality of first steel materials 9.

The core material 8 is formed of steel. For example, the core material 8 is formed of steel wire.

Each of the first fiber aggregates 16 is made of a high-strength fiber aggregate. Each of the first fiber aggregates 16 is arranged on the outer periphery of the core material 8.

The first steel materials 9 are each formed of a steel wire strand. The first steel materials 9 are each arranged outside the first fiber aggregates 16.

According to the seventh embodiment described above, the core material 8 is formed of steel. This allows the rope 5 to be easily shaped to be close to a perfect circle. Furthermore, even if a load is applied in the radial direction of the rope 5, the rope 5 is less likely to lose its shape.

Next, a modified example of the rope 5 will be described with reference to FIG.
FIG. 17 is a cross-sectional view of a modified example of the rope in the seventh embodiment.

In Figure 17, the core material 8 is formed from a steel wire strand.

According to the modified example described above, the core material 8 is formed of steel wire strands. This allows the flexibility of the rope 5 to be further increased.

Embodiment 8.
Fig. 18 is a cross-sectional view of a rope in embodiment 8. Note that the same or corresponding parts as those in embodiment 7 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 18, the rope 5 comprises a plurality of second fiber aggregates 18 and a plurality of second steel materials 17.

The second fiber aggregates 18 are each formed by twisting together a plurality of high-strength fiber aggregates. The second fiber aggregates 18 are each disposed on the outside of the first steel materials 9.

Each of the multiple third steel materials 19 is a steel wire strand. The multiple third steel materials 19 are arranged on the outside of the multiple second fiber aggregates 18, respectively.

According to the eighth embodiment described above, layers of steel material and layers of high-strength fiber aggregate are alternately provided from the center of the cross section of the rope 5 toward the outside. This allows the outer diameter of the rope 5 to be increased without increasing the outer diameter of the steel material layers and the outer diameter of the high-strength fiber aggregate. As a result, the breaking strength of the rope 5 can be increased without sacrificing the flexibility of the rope 5.

Embodiment 9.
Fig. 19 is a cross-sectional view of a rope in embodiment 9. Note that the same or corresponding parts as those in embodiment 8 are denoted by the same reference numerals. Explanation of these parts will be omitted.

As shown in FIG. 19, the rope 5 comprises a plurality of third fiber aggregates 20 and a plurality of third steel materials 19.

The third fiber aggregates 20 are each formed by twisting together a plurality of high-strength fiber aggregates. The third fiber aggregates 20 are each arranged on the outside of the second steel materials 17.

Each of the multiple third steel materials 19 is a steel wire strand. The multiple third steel materials 19 are arranged on the outside of the multiple third fiber aggregates 20, respectively.

According to the ninth embodiment described above, layers of steel material and layers of high-strength fiber aggregate are alternately provided from the center of the cross section of the rope 5 toward the outside. This allows the outer diameter of the rope 5 to be increased without increasing the outer diameter of the steel material layers and the outer diameter of the high-strength fiber aggregate. As a result, the breaking strength of the rope 5 can be increased without sacrificing the flexibility of the rope 5.

Embodiment 10.
Fig. 20 is a cross-sectional view of a rope in embodiment 10. Note that the same or corresponding parts as those in embodiment 1 and the like are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 20, the rope 5 has a first resin layer 22, a second resin layer 23 and a third resin layer 24.

The first resin layer 22 forms a layer between the core material 8 and the multiple first steel materials 9. The second resin layer 23 forms a layer between the multiple first steel materials 9 and the multiple first fiber aggregates 16. The third resin layer 24 forms a layer between the multiple first fiber aggregates 16 and the multiple second steel materials 17.

According to the tenth embodiment described above, the resin layer is formed between the high-strength fiber aggregate and the steel material. This makes it possible to suppress wear of the high-strength fiber filaments 10 in the high-strength fiber aggregate due to contact between the high-strength fiber aggregate and the steel material.

The first resin layer 22, the second resin layer 23, and the third resin layer 24 may be formed from polyethylene and polypropylene. In this case, the first resin layer 22, the second resin layer 23, and the third resin layer 24 can have both high abrasion resistance and low friction.

Embodiment 11.
Fig. 21 is a cross-sectional view of a rope in embodiment 11. Note that the same or corresponding parts as those in embodiment 1 and the like are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 21, the rope 5 has a plurality of second resin bodies 25.

The second resin bodies 25 are each formed of resin. The second resin bodies 25 each cover the first steel materials 9.

According to the eleventh embodiment described above, the second resin body 25 covers the first steel material 9. This makes it possible to suppress abrasion of the high-strength fiber filaments 10 in the high-strength fiber aggregate caused by contact between the high-strength fiber aggregate and the steel material.

The second resin body 25 may be made of polyethylene or polypropylene, which makes it possible to achieve both wear resistance and low friction of the resin body .

Embodiment 12.
Fig. 22 is a cross-sectional view of a rope in embodiment 12. Note that the same or corresponding parts as those in embodiment 1 and the like are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 22, the rope 5 has a first resin body 26 and a plurality of third resin bodies 27.

The first resin body 26 is formed of resin. The first resin body 26 covers the core material 8.

The third resin bodies 27 are each formed of resin. The third resin bodies 27 each cover the first fiber aggregates 16.

According to the twelfth embodiment described above, the first resin body 26 covers the core material 8. This makes it possible to suppress abrasion of the high-strength fiber filaments 10 in the high-strength fiber aggregate caused by contact of the high-strength fiber aggregate with the steel material.

In addition, the multiple third resin bodies 27 each cover the multiple first fiber aggregates 16. This prevents the high-strength fiber filaments 10 from being worn down due to rubbing between adjacent first fiber aggregates 16.

Embodiment 13.
Fig. 23 is a cross-sectional view of a rope in embodiment 13. Note that the same or corresponding parts as those in embodiment 1 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 23, the first steel material 9 has a first central portion 9a and a plurality of first steel portions 9b.

The first central portion 9a is formed from a high-strength fiber assembly.

Each of the first steel portions 9b is formed of a steel wire. The first steel portions 9b are each arranged on the outer periphery of the first central portion 9a.

As shown in FIG. 23, the second steel material 17 has a second central portion 17a and a plurality of second steel portions 17b.

The second central portion 17a is formed from a high-strength fiber assembly.

The second steel portions 17b are each formed of steel. The second steel portions 17b are each arranged on the outer periphery of the second central portion 17a.

According to the thirteenth embodiment described above, in the first steel material 9, the first central portion 9a is formed of a high-strength fiber aggregate. In the second steel material 17, the second central portion 17a is formed of a high-strength fiber aggregate. This not only makes the rope 5 lighter, but also increases the strength to mass ratio of the rope 5.

In the first steel material 9, a resin layer may be provided between the first central portion 9a and the plurality of first steel portions 9b. In this case, wear of the high-strength fiber filaments 10 in the first central portion 9a can be suppressed by contact between the first central portion 9a and the first steel portions 9b.

In the second steel material 17, a resin layer may be provided between the second central portion 17a and the plurality of second steel portions 17b. In this case, the second central portion 17a comes into contact with the second steel portions 17b, thereby suppressing wear of the high-strength fiber filaments 10 in the second central portion 17a.

Embodiment 14.
Fig. 24 is a cross-sectional view of a rope in embodiment 14. Note that the same or corresponding parts as those in embodiment 1 and the like are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in Figure 24, the second steel material 17 is deformed so that its cross section is circular.

According to the above-described embodiment 14, the second steel material 17 is deformed so that the cross section is circular. This reduces the surface pressure when the second steel material 17 comes into contact with the first fiber aggregate 16. As a result, wear of the high-strength fiber filaments 10 in the first fiber aggregate 16 can be suppressed.

In addition, when the multiple second steel materials 17 are the outermost strands, the surface pressure when the rope 5 comes into contact with the sheave 4 can be reduced. As a result, the fatigue resistance of the steel wire in the second steel material 17 can be improved.

Next, a modified example will be described with reference to FIG.
FIG. 25 is a cross-sectional view of a modified example of the rope in the fourteenth embodiment.

As shown in Figure 25, the first steel material 9 is deformed so that its cross section is circular.

According to the modified example described above, the first steel material 9 is deformed so that the cross section is circular. This makes it possible to reduce the surface pressure when the first steel material 9 comes into contact with the core material 8 and the surface pressure when the first steel material 9 comes into contact with the first fiber aggregate 16. As a result, wear of the high-strength fiber filaments 10 in the core material 8 and wear of the high-strength fiber filaments 10 in the first fiber aggregate 16 can be suppressed.

In the ropes 5 in Fig. 11 of embodiment 4 to Fig. 25 of embodiment 14, the outermost layer is a steel wire strand. When these ropes 5 are used in elevators, the steel wires of the outermost layer are damaged before the high-strength fiber filaments 10. This makes it possible to eliminate the need for a device to detect damage to the high-strength fiber filaments 10. As a result, the ropes 5 can be maintained using conventional maintenance techniques.

In addition, in the ropes 5 shown in Fig. 11 of embodiment 4 to Fig. 25 of embodiment 14, the outermost steel wire strands may be impregnated with rope oil. In this case, the coefficient of friction between the rope 5 and the sheave 4 becomes approximately the same as in the conventional case. Therefore, equipment to which the conventional rope 5 is applied can be used as is.

Embodiment 15.
Fig. 26 is a cross-sectional view of a rope in embodiment 15. Note that the same or corresponding parts as those in embodiment 14 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 26, the rope 5 has an outer layer 28.

The outer layer 28 is formed of a resin. For example, the outer layer 28 is formed of a thermoplastic polyurethane elastomer. For example, the outer layer 28 is formed of an ether-based thermoplastic polyurethane elastomer. The outer layer 28 forms a layer on the outside of the multiple second steel materials 17.

According to the fifteenth embodiment described above, the outer layer 28 is formed of resin. The outer layer 28 forms a layer on the outside of the plurality of second steel materials 17. This allows the coefficient of friction between the rope 5 and the sheave 4 to be increased. As a result, the compensating rope or chain can be made lighter or eliminated even in elevators with long ascending and descending distances.

Embodiment 16.
Fig. 27 is a cross-sectional view of a rope structure in embodiment 16. Note that the same or corresponding parts as those in embodiment 1 and the like are denoted by the same reference numerals, and the description of these parts is omitted.

27 , the rope structure is formed in a belt shape. The rope structure includes a plurality of linear structures 29 and a covering structure 30.

Each of the linear structures 29 is formed to be equivalent to the rope 5. In Fig. 27 , the rope 5 is equivalent to the rope 5 in Fig. 11 .

The covering structure 30 is formed of a resin. For example, the covering structure 30 is formed of an ether-based thermoplastic polyurethane elastomer. The covering structure 30 covers the multiple linear structures 29 with the multiple linear structures 29 aligned horizontally with their longitudinal directions aligned.

According to the embodiment 16 described above, the rope structure is formed in a belt shape. Therefore, the rope 5 using the high-strength fiber assembly can be applied to a sheave 4 with a small radius.

As the high-strength fiber aggregate filament, carbon fiber, glass fiber, polyparaphenylene benzoxazole fiber, aramid fiber, polyarylate fiber, basalt fiber, etc. can be used. In this case, the mass-specific strength of the high-strength fiber aggregate can be increased.

Next, a modified example will be described with reference to FIG.
FIG. 28 is a cross-sectional view of a modified example of the rope structure according to the sixteenth embodiment.

The rope 5 is equivalent to the rope 5 in Figure 13. However, the core material 8 is formed from a single high-strength fiber assembly.

According to the modified example described above, the rope 5 is equivalent to the rope 5 in Figure 13. This makes it possible to further increase the breaking strength of the rope structure.

Note that any of the long bodies of the ropes 5 in FIG. 11 of embodiment 4 to FIG. 26 of embodiment 15 and the rope structures in FIG. 27 and FIG. 28 of embodiment 16 may be applied to elevators other than that of FIG. 1. For example, any of these ropes 5 and rope structures may be applied to a machine room-less elevator. For example, any of these ropes 5 and rope structures may be applied to an elevator using a 2:1 roping system. For example, any of these ropes 5 and rope structures may be applied to a double deck elevator.

In addition, any of these ropes 5 and rope structures may be applied to an elevator governor.

In addition, any of these ropes 5 and rope structures may be applied to high-rise elevators with a hoisting height of more than 75 meters. In this case, the higher the hoisting height, the greater the effect of reducing the total weight of the ropes 5 compared to conventional ropes 5.

In addition, if the outermost layer of the rope 5 or rope structure is made of resin, the friction coefficient of the rope 5 or rope structure becomes larger. This allows the compensating rope or compensating chain to be made lighter or eliminated.

As described above, the rope disclosed herein can be used in elevators.

1 Hoistway, 2 Machine room, 3 Hoist, 4 Sheave, 5 Rope, 6 Cage, 7 Counterweight, 8 Core, 9 First steel material, 9a First central portion, 9b First steel portion, 10 High strength fiber filament, 11 Matrix resin, 12 High strength fiber yarn, 13 High strength fiber strand, 16 First fiber aggregate, 17 Second steel material, 17a Second central portion, 17b Second steel portion, 18 Second fiber aggregate, 19 Third steel material, 20 Third fiber aggregate, 21 Fourth steel material, 22 First resin layer, 23 Second resin layer, 24 Third resin layer, 25 Second resin body, 26 First resin body, 27 Third resin body, 28 Outer layer, 29 Linear structure, 30 Covering structure

Claims (32)

A high-strength fiber assembly comprising a plurality of high-strength fiber filaments, each of which is a fibrous monofilament;
The plurality of high strength fiber filaments are maintained in a bundle in longitudinal alignment with one another;
The cross-sectional shape of the plurality of high-strength fiber filaments in a bundled state is a shape having sides facing a radial direction perpendicular to the longitudinal direction, and is a fan shape or a shape obtained by removing a central fan shape from a fan shape of a preset size.
rope. The rope according to claim 1, wherein the multiple high-strength fiber filaments are maintained in a filled state inside the matrix resin. The rope according to claim 2, wherein the matrix resin is a flexible resin. The rope according to claim 3, wherein the matrix resin is an epoxy resin or a urethane resin. The rope according to claim 3, wherein the matrix resin is an epoxy resin that is hardened by mixing a liquid base material containing one or more of polyoxyalkylene bonds, urethane bonds, and butadiene rubber in its molecule and two or more epoxy groups in its molecule with a hardener. The rope according to any one of claims 1 to 5, wherein each of the plurality of high-strength fiber filaments is a filament formed of carbon fiber, glass fiber, polyparaphenylene benzoxazole fiber, aramid fiber, polyarylate fiber, or basalt fiber. A core material formed from the high-strength fiber aggregate;
A plurality of first steel materials each arranged on an outer periphery of the core material;
The rope according to any one of claims 1 to 6, comprising: a core material formed by twisting together a plurality of linear bodies each formed of the high-strength fiber aggregate;
A plurality of first steel materials each arranged on an outer periphery of the core material;
The rope according to any one of claims 1 to 6, comprising: a first resin layer formed of resin and disposed between the core material and the first steel materials;
The rope according to claim 7 or 8, comprising: A core material formed of steel;
A plurality of first fiber assemblies each formed of the high-strength fiber aggregate and each disposed on an outer periphery of the core material;
A plurality of first steel materials each arranged outside the plurality of first fiber aggregates;
The rope according to any one of claims 1 to 6, comprising: The rope according to claim 10, wherein the core material is formed from steel wire strands. a basic resin layer formed of a resin and disposed between the core material and the first fiber aggregates;
The rope according to claim 10 or 11, comprising: a first resin layer formed of resin and disposed between the plurality of first fiber aggregates and the plurality of first steel materials;
The rope according to any one of claims 10 to 12, comprising: a first resin body formed of resin and covering the core material;
The rope according to any one of claims 7 to 13, comprising: Each of the plurality of first steel materials is
a first center portion formed of the high-strength fiber aggregate;
a plurality of first steel portions each formed of steel and each disposed on an outer periphery of the first central portion;
The rope according to any one of claims 7 to 14, comprising: An outer layer formed of resin and forming a layer on the outer side of the plurality of first steel materials;
The rope according to any one of claims 7 to 14, comprising: A plurality of first fiber aggregates each formed of the high-strength fiber aggregate and each arranged on the outer side of the plurality of first steel materials;
A plurality of second steel materials each arranged outside the plurality of first fiber aggregates;
The rope according to any one of claims 7 to 14, comprising: a second resin layer formed of resin and disposed between the first steel materials and the first fiber aggregates;
18. The rope of claim 17, comprising: a third resin layer formed between the plurality of first fiber aggregates and the plurality of second steel materials;
The rope according to claim 17 or 18, comprising: A plurality of second resin bodies each formed of resin and covering the plurality of first steel materials,
20. The rope according to any one of claims 15 to 19, comprising: a plurality of third resin bodies each formed of a resin and covering the plurality of first fiber aggregates,
20. The rope according to any one of claims 17 to 19, comprising: Each of the plurality of second steel materials is
A second center portion formed of the high-strength fiber aggregate;
A plurality of second steel portions each disposed on an outer periphery of the second central portion;
The rope according to any one of claims 17 to 19 and 21, comprising: An outer layer formed of resin and forming a layer on the outer side of the plurality of second steel materials;
The rope according to any one of claims 17 to 19 and claims 21 to 22, comprising: A plurality of second fiber aggregates each formed of the high-strength fiber aggregate and each arranged on the outer side of the plurality of second steel materials;
A plurality of third steel materials respectively arranged on the outer sides of the plurality of second fiber aggregates;
The rope according to any one of claims 17 to 19 and claims 21 to 23, comprising: a third resin layer formed of resin and disposed between the plurality of second steel materials and the plurality of second fiber aggregates;
25. The rope of claim 24, comprising: a fourth resin layer formed between the plurality of second fiber aggregates and the plurality of third steel materials;
26. The rope according to claim 24 or claim 25, comprising: a plurality of fourth resin bodies each formed of resin and covering the plurality of second steel materials,
27. The rope according to any one of claims 24 to 26, comprising: a plurality of fifth resin bodies each formed of a resin and covering the plurality of second fiber aggregates,
28. The rope according to any one of claims 24 to 27, comprising: Each of the plurality of third steel materials is
a third center portion formed of the high-strength fiber aggregate;
A plurality of third steel parts each arranged on an outer periphery of the third center part;
29. The rope according to any one of claims 24 to 28, comprising: The rope according to any one of claims 24 to 29, wherein each of the plurality of first steel materials, each of the plurality of second steel materials, and each of the plurality of third steel materials is processed to have a circular cross section. An outer layer formed of resin and forming a layer on the outer side of the plurality of third steel materials;
31. The rope according to any one of claims 24 to 30, comprising: A plurality of linear structures each formed of the rope according to any one of claims 7 to 15, claims 17 to 22, and claims 24 to 30;
a covering structure that covers the plurality of linear structures in a state in which the plurality of linear structures are aligned in a horizontal direction with their longitudinal directions aligned;
A rope structure comprising:

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