DE112020007544T5 - Belt, method of manufacture and winding thereof - Google Patents

Abstract

A belt is provided having a plurality of cable bodies and a cable sheath body. The plurality of cord bodies are arranged to be spaced apart from each other in a width direction when viewed in cross section perpendicular to a longitudinal direction of the belt. The wire covering body covers the plurality of wire bodies. The plurality of cable bodies each have core cables. Each of the core ropes has a core fiber bundle and a plurality of core wire members made of steel. The core fiber bundle is formed of a high-strength fiber bundle or a plurality of twisted high-strength fiber bundles. The plurality of core wire members are provided on an outer periphery of the core fiber bundle.

Description

technical field

This disclosure relates to a belt, a method of making the same, and an elevator.

background

A related type rope for an elevator has a load-bearing part and a polymer layer. An outer periphery of the load bearing portion is covered with the polymer layer. The load bearing part is made of a composite material. The composite contains a multitude of reinforcing fibers and a polymer matrix. The plurality of reinforcing fibers are aligned in a direction parallel to a longitudinal direction of the cord. Further, the plurality of reinforcing fibers are bonded together via the polymer matrix (e.g. see Patent Literature 1).

Also, a related type belt for an elevator system has a plurality of tension members. Each of the tensile members includes a core member, a plurality of sheath members, and a sheath material. The core member is formed of a plurality of load-bearing fibers (see Patent Literature 2, for example).

citation list

patent literature

• [PTL 1] JP 5713682B
• [PTL 2] JP 2018-177535 A

Presentation of the invention

Technical task

The outer periphery of the load-bearing part of the rope-related type described in Patent Literature 1 is covered with only the polymer layer, and there is no confining force acting between the reinforcing fibers in the rope. Thus, when the load-bearing part has a large diameter, a load is less likely to be transmitted to the vicinity of a center of the load-bearing part. Accordingly, it is difficult to uniformly distribute the load to all the reinforcing fibers.

The belt described in Patent Literature 2 has the plurality of wrapping members provided on an outer periphery of the core member. However, a method of manufacturing the core member is the same as that described in Patent Literature 1. Thus, as in the case of the rope described in Patent Literature 1, it is difficult to uniformly distribute the load to all the reinforcing fibers.

This disclosure has been made to achieve the above-described objects and aims to provide a belt that enables a load to be more uniformly distributed to a high-strength fiber bundle, a method of manufacturing the same, and an elevator.

solution of the task

According to this disclosure, there is provided a belt including: a plurality of cord bodies arranged to be spaced apart from each other in a width direction when viewed in cross section perpendicular to a longitudinal direction; and a rope sheath body configured to sheath the plurality of rope bodies, the plurality of rope bodies each having core ropes, and wherein each of the core ropes comprises: a core fiber bundle formed of a high-strength fiber bundle or a plurality of twisted high-strength fiber bundles; and a plurality of steel-made core wire members provided on an outer periphery of the core fiber bundle.

Advantageous Effects of the Invention

The belt according to this disclosure allows for a more uniform distribution of load on the high strength fiber bundle.

character list

• 1 14 is a perspective view of an elevator according to a first embodiment.
• 2 is a sectional view of an in 1 belt shown.
• 3 is a sectional view of an area where an in 1 shown traction sheave and the belt touch each other.
• 4 Fig. 13 is a sectional view showing a modification example of a Fig 3 illustrated crown.
• 5 12 is a sectional view of a belt according to a second embodiment.
• 6 is an enlarged sectional view of a 5 shown rope body.
• 7 12 is a sectional view of a belt according to a third embodiment.
• 8th is an enlarged sectional view of a 7 shown rope body.
• 9 12 is a sectional view of a belt according to a fourth embodiment.
• 10 is an enlarged sectional view of a 9 shown rope body.
• 11 12 is a sectional view of a belt according to a fifth embodiment.
• 12 12 is a sectional view of a belt according to a sixth embodiment.
• 13 12 is a sectional view of a belt according to a seventh embodiment.
• 14 is an enlarged sectional view of a 13 shown rope body.
• 15 12 is a sectional view of a belt according to an eighth embodiment.
• 16 12 is a sectional view of a belt according to a ninth embodiment.
• 17 12 is a sectional view of a belt according to a tenth embodiment.
• 18 12 is an enlarged sectional view of a cord body of a belt according to an eleventh embodiment.
• 19 12 is an enlarged sectional view of a cord body of a belt according to a twelfth embodiment.
• 20 is a side view illustrating the in 19 illustrated rope body in a plurality of layers such that each of the layers is exposed.
• 21 Fig. 12 is a side view showing a first example of a 20 illustrated thread.
• 22 Fig. 14 is a side view showing a second example of Fig 20 illustrated thread.
• 23 13 is an enlarged sectional view of a cord body of a belt according to a thirteenth embodiment.
• 24 is a side view illustrating the in 23 illustrated rope body in a plurality of layers such that each of the layers is exposed.
• 25 14 is an enlarged sectional view of a cord body of a belt according to a fourteenth embodiment.
• 26 14 is an enlarged sectional view of a cord body of a belt according to a fifteenth embodiment.
• 27 14 is an enlarged sectional view of a cord body of a belt according to a sixteenth embodiment.
• 28 14 is an enlarged sectional view of a cord body of a belt according to a seventeenth embodiment.
• 29 12 is a sectional view of a belt according to an eighteenth embodiment.
• 30 12 is a sectional view of a belt according to a nineteenth embodiment.

Description of the embodiments

Embodiments will now be described with reference to the drawings.

First embodiment

1 14 is a perspective view of an elevator according to a first embodiment. As in 1 As shown, a machine room 2 is provided above a shaft 1. An elevator 3 and a deflection sheave 6 are installed in the machine room 2 .

The elevator 3 has an elevator main body 4 and a cylindrical traction sheave 5 . The elevator main body 4 has an elevator motor (not shown) and an elevator brake (not shown). The elevator motor rotates the traction sheave 5. The elevator brake keeps the traction sheave 5 in a stationary state. In addition, the elevator brake brakes the rotation of the traction sheave 5.

The traction sheave 5 rotates around a rotary shaft extending in a horizontal direction. Two or more belts 7 are wrapped around the traction sheave 5 and the deflection sheave 6 . However, it is only a strap 7 in 1 shown. The two or more belts 7 are arranged to be spaced apart from each other in an axial direction of the traction sheave 5 .

A cab 8 is connected to first end portions of the belts 7 in a longitudinal direction of the belts 7 . A counterweight 9 is connected to second end portions of the belts 7 in the longitudinal direction of the belts 7 . The car 8 and the counterweight 9 are supported by the belts 7 in the shaft 1. Specifically, the straps 7 function as supporting bodies. When the traction sheave 5 is rotated, the car 8 and the counterweight 9 in the shaft 1 are raised and lowered.

A first car guide rail 10a, a second car guide rail 10b, a first counterweight guide rail (not shown), and a second counterweight guide rail (not shown) are installed in the hoistway 1. As shown in FIG. The first car guide rail 10a and the second car guide rail 10b guide the raising and lowering of the car 8. The first counterweight guide rail and the second Counterweight guide rails guide the raising and lowering of the counterweight 9.

A balance body 11 is provided between the cab 8 and the counterweight 9 and is suspended from a lower part of the cab 8 and a lower part of the counterweight 9 . The balancing body 11 compensates for an influence of a change in the weight balance of the belts 7 caused by the movement of the car 8 . A cable-like member having flexibility, such as a rope or a chain, is used as the balancing body 11 .

2 is a sectional view of the in 1 illustrated belt, which is perpendicular to the longitudinal direction of the belt 7. A dimension of the belt 7 in a thickness direction is smaller than a dimension of the belt 7 in a width direction. The thickness direction of the belt 7 is parallel to an x-axis of the 2 . The width direction of the belt 7 is parallel to a y-axis of the 2 . The longitudinal direction of the belt 7 is parallel to a z-axis of the 2 .

When viewed in cross section perpendicular to the longitudinal direction of the belt 7, the belt 7 has a plurality of cord bodies 21 and a cord covering body 22 made of a resin. In 2 ten cable bodies 21 are shown. The plurality of cord bodies 21 are arranged in the width direction of the belt 7 at equal intervals. The multiplicity of cable bodies 21 function as strength elements.

The cable covering body 22 covers a group of all the cable bodies 21. Specifically, the plurality of cable bodies 21 are bound by the cable covering body 22. FIG.

As a material for the wire covering body 22, an elastomer is used. Further, an ether-based thermoplastic polyurethane elastomer is preferred as the elastomer in view of its high friction properties, wear resistance and resistance to hydrolysis. The rope covering body 22 may contain a flame retardant. Accordingly, the flame retardant provides the rope covering body 22 with flame resistance.

The plurality of cord bodies 21 are arranged in the longitudinal direction of the belt 7 . Specifically, a longitudinal direction of each of the cord bodies 21 corresponds to the longitudinal direction of the belt 7 . Each of the wire bodies 21 according to the first embodiment is formed of only the core wire 23 .

The core rope 23 has a core fiber bundle 24 and a plurality of core wire elements 25 . The core wire members 25 are made of steel. A cross section of the core fiber bundle 24, which is perpendicular to the longitudinal direction of the cord body 21, has a circular shape.

The core fiber bundle 24 is formed from a high strength fiber bundle or a plurality of twisted high strength fiber bundles. Each of the high strength fiber bundles is formed by twisting a plurality of high strength fiber filaments.

One or more fibers selected from the group consisting of a carbon fiber, a glass fiber, a polypara-phenylene-benzo-bis-oxazole (PBO) fiber, an aramid fiber, a polyarylate fiber, and a basalt fiber are used as a material of the high-strength fiber bundle.

The plurality of core wire members 25 are arranged on an outer periphery of the core fiber bundle 24 . Further, the plurality of core wire members 25 are twisted together around the outer periphery of the core fiber bundle 24 . In 2 twelve core wire elements 25 are used. A steel-made element wire, specifically, a steel wire is used as each of the element core wires 25 . A diameter of each of the core wire members 25 is smaller than a diameter of the core fiber bundle 24.

3 is a sectional view of an area where the in 1 shown drive pulley 5 and the belt 7 are in contact with each other. Two or more belts 7 are wound around an outer periphery of the traction sheave 5 so as to be spaced from each other in the axial direction of the traction sheave 5 . The axial direction of the traction sheave 5 corresponds to a right-left direction 3 . However, it is only a strap 7 in 3 shown. Further, an illustration of an internal structure of the belt 7 is shown in FIG 3 omitted.

The traction sheave 5 has the same number of belt grooves 5 a as the number of belts 7 , and the belt grooves 5 a are formed in the outer periphery of the traction sheave 5 . Each of the belts 7 is fitted in a corresponding one of the belt grooves 5a.

A diameter of a part of the traction sheave 5 with which the belt 7 is in contact differs from another part of the traction sheave 5 in such a manner that a center portion of the belt 7 in the width direction is outward in a radial direction of the traction sheave 5 with respect to both End portions of the belt 7 protrudes in the width direction. Specifically, one bottom surface of the belt groove 5a has a crown 5b. The radial direction of the traction sheave 5 corresponds to a top-bottom direction 3 .

4 12 is a sectional view showing a modification example of FIG 3 illustrated crown 5b. In 3 a surface of the crown 5b has a slightly arcuate curved profile in cross section. Meanwhile, a surface of the crown 5b has a 4 exhibits a trapezoidal profile in cross section, specifically a profile of a combination of three straight lines.

When a load is applied to the belt 7 mentioned above, the core fiber bundle 24 is confined in the radial direction by the plurality of core wire members 25 . Thus, in the belt 7 and an elevator using the belt 7, the load can be more uniformly distributed to the high-strength fiber bundle for forming the core fiber bundle 24.

Further, each of the core fiber bundles 24 is formed of the high-strength fiber bundle. Thus, the belt 7 can be reduced in weight and increased in strength. As a result, the belt 7 has a large strength-to-weight ratio.

Accordingly, the belt 7 according to the first embodiment is applicable to an elevator having a travel distance of 75 meters or more for the car 8 .

Further, the belt 7 can be bent more easily than a related type wire rope having the same strength. A diameter of the traction sheave 5 can thus be reduced. For example, the diameter of the traction sheave 5 can be forty times or less the largest diameter of the plurality of cable bodies 21 . The plurality of cord bodies 21 have the same diameter in the first embodiment, and thus the diameter of each cord body 21 corresponds to the largest diameter.

The belt 7 has a high strength-to-mass ratio and a high coefficient of friction against the traction sheave 5 . A mass of the compensating body 11 can thus be reduced. For example, the mass of the compensating body 11 can be reduced to half or less of the total weight of all the belts 7 . Furthermore, the balancing body 11 can be omitted entirely, depending on the travel distance of the car 8.

Further, each of the element core wire 25 is formed of an element wire. Thus, the belt 7 can be made easier.

Furthermore, the lower surface of each of the belt grooves 5a has the crown 5b. Thus, a positional displacement of each of the belts 7 in the axial direction of the traction sheave 5 can be suppressed.

A method of manufacturing the belt 7 according to the first embodiment includes a step of continuously covering all the wire bodies 21 with the wire cover body 22 in a state where a uniform tension is applied to all the wire bodies 21 . As a result, when a load is applied to the belt 7, the load is distributed to all the rope bodies 21 substantially uniformly. Thus, premature damage of at least one of the cable bodies 21 is suppressed.

Second embodiment

Next is 5 14 is a sectional view of a belt 7 according to a second embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. Each core rope 23 according to the second embodiment has a core fiber bundle 24 and a plurality of core strands 26 made of steel. The plurality of core strands 26 correspond to a plurality of core wire members.

The plurality of core strands 26 are arranged on an outer periphery of the core fiber bundle 24 . The plurality of core strands 26 are twisted together about the outer periphery of the core fiber bundle 24 . In 5 twelve core strands 26 are used. A diameter of each of the core strands 26 is smaller than a diameter of the core fiber bundle 24.

6 is an enlarged sectional view of a 5 shown rope body 21. Each of the core strands 26 has a plurality of steel-made core member wires 27 twisted together. More specifically, each of the core strings 26 includes a center core member wire and six outer peripheral core member wires.

The center core member wire corresponds to a core member wire 27 arranged at a center of the core strand 26 . The outer circumference core element wires correspond to core element wires 27 twisted together around an outer circumference of the center core element wire. All core element wires 27 have the same diameter.

A configuration of the belt 7 is the same as that of the belt 7 according to the first embodiment except that the plurality of core strands 26 are used instead of the plurality of core wire members 25 . Furthermore, a method of manufacturing the belt 7 and a configuration of an elevator is the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those obtained in the first embodiment.

Using the plurality of core strands 26 instead of the plurality of core wire members 25 can further increase the flexibility of the belt 7 .

Both of the core wire members 25 according to the first embodiment and the core strands 26 according to the second embodiment may be arranged on the outer periphery of the same core fiber bundle 24 .

Third embodiment

Next is 7 14 is a sectional view of a belt 7 according to a third embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. Each rope body 21 according to the third embodiment has a core rope 23 , a first outer peripheral fiber layer 28 and a first strand layer 29 .

The core rope 23 according to the third embodiment has a core fiber bundle 24 and six core strands 26 . The six core strands 26 are twisted together around an outer periphery of the core fiber bundle 24 . A diameter of each of the core strands 26 is the same or substantially the same as a diameter of the core fiber bundle 24.

The first outer peripheral fiber layer 28 is provided on an outer periphery of the core rope 23 . The first outer peripheral fiber layer 28 is formed of a high strength fiber bundle similar to the core fiber bundles 24 . A cross section of the first outer peripheral fiber layer 28, which is perpendicular to a longitudinal direction of the cord body 21, has an annular shape.

The first strand layer 29 is provided on an outer periphery of the first outer peripheral fiber layer 28 . The first strand layer 29 includes a plurality of first skin layer strands 30 . The plurality of first skin layer strands 30 are twisted together about the outer perimeter of the first outer perimeter fibrous layer 28 . In 7 twenty first skin strands 30 are provided. Specifically, the number of first skin strands 30 is greater than the number of core strands 26.

8th is an enlarged cross-sectional view of the in 7 illustrated cable body 21. Each of the first skin layer strands 30 has a plurality of first skin member wires 31 on. The plurality of first skin member wires 31 are made of steel and are twisted together. More specifically, each of the first skin layer strands 30 has a first center panel wire and six first outer panel members wires.

The first center panel wire corresponds to a first skin panel wire 31 arranged in a center of the first skin layer strand 30 . The first outer peripheral member wires correspond to first outer layer member wires 31 twisted together around an outer periphery of the first center member wire. All of the first skin member wires 31 have the same diameter.

Each of the first skin member wires 31 has the same diameter as a diameter of each core member wire 27 . Further, each of the first skin strands 30 has the same diameter as a diameter of each of the core strands 26 . Specifically, in this embodiment, the same steel-made strand as the core strand 26 is used as each of the first skin strands 30 .

A configuration of the belt 7 is the same as that of the belt 7 according to the second embodiment except that the first outer peripheral fiber layer 28 and the first strand layer 29 are provided on an outside of the core rope 23 . Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the second embodiment.

When a load is applied to the belt 7, the core fiber bundle 24 is sandwiched by the plurality of core strands 26 in the radial direction. Further, the first outer peripheral fiber layer 28 is sandwiched in the radial direction by the plurality of first outer layer strands 30 . Thus, when each of the rope bodies 21 has a large diameter, a load can be more uniformly distributed to the high-strength strands of the rope body 21 .

Fourth embodiment

Next is 9 14 is a sectional view of a belt 7 according to a fourth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. Each rope body 21 according to the fourth embodiment has a core rope 23 , a first outer peripheral fiber layer 28 , a first strand layer 29 , a second outer peripheral fiber layer 32 and a second strand layer 33 .

The second outer peripheral fiber layer 32 is provided on an outer periphery of the first strand layer 29 . The second outer peripheral fiber layer 32 is formed of a high-strength fiber bundle similar to the core fiber bundle 24 . A cross section of the second outer peripheral fiber layer 32, which is perpendicular to a longitudinal direction of the cord body 21, has an annular shape.

The second strand layer 33 is provided on an outer periphery of the second outer peripheral fiber layer 32 . The second strand layer 33 includes a plurality of second skin layer strands 34 . The plurality of second skin layer strands 34 are twisted together about the outer perimeter of the second outer perimeter fibrous layer 32 . In 9 Thirty-two second skin layer strands 34 are provided. Specifically, the number of second outer layer strands 34 is greater than the number of first outer layer strands 30.

10 is an enlarged cross-sectional view of the in 9 illustrated cable body 21. Each of the second skin layer strands 34 has a plurality of second skin member wires 35 on. The plurality of second skin member wires 35 are made of steel and twisted together. More specifically, each of the second skin layer strands 34 has a second center member wire and six second outer member wires.

The second center panel wire corresponds to a second skin panel wire 35 arranged at a center of the second skin panel strand 34 . The second outer peripheral member wires correspond to second outer layer member wires 35 twisted together around an outer periphery of the second center member wire. All of the second skin member wires 35 have the same diameter.

Each of the second skin member wires 35 has the same diameter as a diameter of each core member wire 27 and also a diameter of each first skin member wire 31 . Each of the second skin layer strands 34 has the same diameter as a diameter of each core strand 26 and also a diameter of each first skin layer strand 30 . Specifically, in this example, the same steel-made strand as each of the core strands 26 and the first skin strands 30 is used as each of the second skin strands 34 .

A configuration of the belt 7 is the same as that of the belt 7 according to the third embodiment except that the second outer peripheral fiber layer 32 and the second cord layer 33 are provided on an outside of the first cord layer 29 . Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the third embodiment.

Further, when a load is applied to the belt 7 , the second outer peripheral fiber layer 32 is sandwiched in the radial direction by the plurality of second skin layer strands 34 . Accordingly, even if the rope body 21 has a larger diameter, the load can be more uniformly distributed to the high-strength fiber bundles of the rope body 21 .

Steel-made strands having various structures and various diameters may be used as the core strand 26, the first skin strand 30, and the second skin strand 34.

Further, three or more layers of high-strength fiber bundles and three or more strand layers may be provided on an outside of the cord body 23 .

Fifth embodiment

Next is 11 14 is a sectional view of a belt 7 according to a fifth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. A center wire member 36 made of steel is provided at a center of each core fiber bundle 24 . A steel-made element wire, specifically, a steel wire is used as each of the center wire elements 36 . Each of the center wire members 36 is arranged to extend continuously in a longitudinal direction of a wire body 21 .

Each core rope 23 according to the fifth embodiment has the core fiber bundle 24 , a plurality of core wire members 25 and the center wire member 36 . In this example, the the same steel wire as each of the core wire members 25 is used as the center wire member 36 .

A configuration of the belt 7 is the same as that of the belt 7 according to the first embodiment except that the center wire member 36 is provided at the center of each of the core fiber bundles 24 . Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the first embodiment.

Further, the core wire member 36 is provided in the center of each of the core fiber bundles 24 . Thus, when the core fiber bundle 24 is to be formed, the core fiber bundle 24 is arranged around the core wire member 36 . As a result, the core fiber bundle 24 having a circular sectional shape can be easily obtained. Accordingly, the wire body 21 having a circular sectional shape can be easily obtained.

The member core wire 36 may be a steel wire having a different diameter from a diameter of each of the member core wires 25 .

Sixth embodiment

Next is 12 14 is a sectional view of a belt according to a sixth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. The belt 7 according to the sixth embodiment is the same as the belt 7 according to the second embodiment except that a core wire member 36 is provided at a center of each core fiber bundle 24 . The center wire member 36 is the same as the center wire member 36 according to the fifth embodiment. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the fifth embodiment.

Furthermore, the use of a plurality of core strands 26 can further increase the flexibility of the belt 7 .

Seventh embodiment

Next is in 13 14 is a sectional view of a belt 7 according to a seventh embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. A center strand 37 made of steel, which corresponds to a center wire member, is provided at a center of each core fiber bundle 24 according to the seventh embodiment. Each of the center strands 37 is arranged to extend continuously in a longitudinal direction of a cord body 21 .

14 is an enlarged sectional view of FIG 13 shown rope body 21. The center strand 37 has a plurality of center strand element wires 38. The plurality of center strand member wires 38 are made of steel and twisted together. More specifically, the center strand 37 has a third center member wire and six third outer peripheral member wires.

The third center element wire corresponds to a center strand element wire 38 disposed at a center of the center strand 37 . The third outer peripheral member wires correspond to center strand member wires 38 twisted together around an outer periphery of the third center member wire. All center strand member wires 38 are of the same diameter.

Each of the center strand element wires 38 has the same diameter as a diameter of each core element wire 27 . Each of the center strands 37 has the same diameter as a diameter of each core strand 26 . Specifically, the same steel-made strand as the core strand 26 is used as each of the center strands 37 in this example.

The belt 7 according to the seventh embodiment is the same as the belt 7 according to the sixth embodiment except that the center strand 37 is provided at the center of each of the core fiber bundles 24 . Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those obtained in the sixth embodiment.

Further, using the center cord 37 instead of the center wire member 36 made of a steel wire can further increase the flexibility of the belt 7 .

Eighth embodiment

Next is 15 14 is a sectional view of a belt 7 according to the eighth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. Each cord body 21 according to the eighth embodiment has the same center strand 37 as that provided in the seventh embodiment. The center strand 37 is provided at a center of a core fiber bundle 24 according to the third embodiment. Each of the center strands 37 is arranged to extend continuously in a longitudinal direction of the wire body 21 .

Furthermore, according to the eighth embodiment, each core cable 23 has twelve core strands 26 . Furthermore, a first strand layer 29 according to the eighth embodiment has twenty-four first skin layer strands 30 .

A configuration of the belt 7 is the same as that of the belt 7 according to the third embodiment except that the center strand 37 is provided in the center of each of the core fiber bundles 24, the number of core strands 26 and the number of first skin layer strands 30. Further, a Method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the third embodiment.

When the core fiber bundle 24 is to be formed, the core fiber bundle 24 may be arranged around the center strand 37 . Thus, the core fiber bundle 24 having a circular sectional shape can be easily obtained. Accordingly, the wire body 21 having a circular sectional shape can be easily obtained.

Using the center strand 37 as the center wire member can further increase the flexibility of the belt 7 .

Ninth embodiment

Next is 16 14 is a sectional view of a belt 7 according to a ninth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. Each cable body 21 according to the ninth embodiment has the same central strand 37 as that provided in the seventh embodiment. The center strand 37 is provided at a center of a core fiber bundle 24 according to the fourth embodiment. Each of the center strands 37 is arranged to extend continuously in a longitudinal direction of the wire body 21 .

Furthermore, according to the ninth embodiment, each core cable 23 has eight core strands 26 . Furthermore, a second strand layer 33 according to the ninth embodiment has twenty-eight second skin layer strands 34 .

A configuration of the belt 7 is the same as that of the belt 7 according to the fourth embodiment except that the center strand 37 is provided in the middle of each of the core fiber bundles 24, the number of core strands 26 and the number of second skin layer strands 34. Further, a Method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the fourth embodiment.

When the core fiber bundle 24 is to be formed, the core fiber bundle 24 may be arranged around the center strand 37 . Thus, the core fiber bundle 24 having a circular sectional shape can be easily obtained. Accordingly, the wire body 21 having a circular sectional shape can be easily obtained.

Using the center strand 37 as the core wire member can further increase the flexibility of the belt 7 .

Three or more layers of high-strength fiber bundles and three or more strand layers may be provided on an outer side of the core rope 23 .

Tenth embodiment

Next is 17 14 is a sectional view of a belt 7 according to a tenth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. Each rope body 21 according to the tenth embodiment has a core fiber bundle 24 , a plurality of core wire members 25 and a core resin layer 39 . The core resin layer 39 is provided between the core fiber bundle 24 and one layer of the plurality of core wire members 25 .

As a material of the core resin layer 39, a resin having high wear resistance and low friction properties, such as polyethylene or polypropylene, is used.

A configuration of the belt 7 is the same as that of the belt 7 according to the first embodiment except that the core resin layer 39 is provided on an outer periphery of the core fiber bundle 24 . Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those obtained in the first embodiment.

The core resin layer 39 provided at a boundary between the core fiber bundle 24 and the layer of the plurality of core wire members 25 can suppress wear of the core fiber bundle 24 that may be caused by contact with the plurality of core wire members 25 .

In the second to ninth embodiments, the core resin layer 39 may be provided on an outer periphery of the core fiber bundle 24 .

Further, in the third, fourth, eighth, and ninth embodiments, a first outer peripheral resin layer similar to the core resin layer 39 may be provided on an outer periphery of the first outer peripheral fiber layer 28 .

Furthermore, in the fourth and ninth embodiments, a second outer peripheral resin layer similar to the core resin layer 39 may be provided on an outer periphery of the second outer peripheral fiber layer 32 .

Eleventh embodiment

Next is 18 12 is an enlarged sectional view of a rope body 21 of a belt 7 according to an eleventh embodiment. An overall cross section of the belt 7 is the same as that shown in FIG 13 is shown.

A center strand 37 according to the eleventh embodiment has a center fiber core 40 arranged at a center. Each core strand 26 has a strand fiber core 41 arranged at a center. Each of the center fiber cores 40 and the strand fiber cores 41 is formed of a high-strength fiber bundle similar to the core fiber bundle 24 .

The center strand 37 has the center fiber cores 40 and six center strand element wires 38 . The six center strand element wires 38 are twisted together around an outer periphery of the center fiber core 40 .

Each of the core strands 26 has the strand fiber core 41 and six core element wires 27 . The six core element wires 27 are twisted together around an outer periphery of the strand fiber core 41 .

A configuration of the belt 7 is the same as that of the belt 7 according to the seventh embodiment except for the configuration of the center strand 37 and the configuration of the core strand 26. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the seventh embodiment.

Furthermore, the center strand 37 has the center fiber core 40 arranged in the center. Further, the core strand 26 has the strand fiber core 41 arranged in the middle. Accordingly, a reduction in the weight of the belt 7 can be achieved. Furthermore, a strength-to-mass ratio can be improved.

Not all core strands 26 need to have the strand fiber core 41 . Specifically, at least one of the core strands 26 must have the strand fiber core 41 .

Further, in the second to fourth, sixth, eighth, and ninth embodiments, at least one of the core strands 26 may have the strand fiber core 41 disposed at the center.

Furthermore, in the third, fourth, eighth, and ninth embodiments, at least one of the first skin layer strands 30 may include a first skin layer fiber core. The first skin layer fiber core is formed of a shatterproof fiber bundle and is located at a center.

Furthermore, in the fourth and ninth embodiments, at least one of the second skin strands 34 may include a second skin fiber core. The second skin layer fiber core is formed of a high-strength fiber bundle and is located at a center.

Furthermore, in the eighth and ninth embodiments, the center strand 37 may have the center fiber core 40 arranged at the center.

Furthermore, when a strand has a fiber core arranged at a center, a core resin layer similar to the core resin layer 39 according to the tenth embodiment may be provided between a resin layer and a layer of a plurality of element wires provided around the resin layer. With this configuration, the core resin layer can suppress abrasion of the fiber core.

Twelfth embodiment

Next is in 19 12 is an enlarged sectional view of a cord body 21 of a belt 7 according to the twelfth embodiment. An overall cross section of the belt 7 is substantially the same as that shown in FIG 7 is shown.

Each core cable 23 according to the twelfth embodiment has twelve core strands 26 . Each first strand layer 39 has eight first skin layer strands 30 . A diameter of each of the core strands 26 is smaller than a diameter of each of the first skin strands 30. The number of core strands 26 is greater than the number of first skin strands 30.

Each of the first skin strands 30 has nineteen first skin member wires 31 . More specifically, each of the first skin layer strands 30 has a first center panel wire, nine first intermediate panel wires, and nine first outer peripheral panel wires.

The first center panel wire corresponds to a first skin panel wire 31 arranged in a center of the first skin layer strand 30 . The first intermediate member wires correspond to the first outer layer member wires 31 twisted together around an outer periphery of the first center member wire. The first outer peripheral member wires correspond to first outer layer member wires 31 twisted together around an outer periphery of a layer of the nine first intermediate member wires.

A diameter of each of the first intermediate member wires is smaller than a diameter of the first center member wire and is smaller than a diameter of each of the first outer peripheral member wires. Each core member wire 27 has a smaller diameter than a diameter of any one of the first skin member wires 31.

Each of a high-strength fiber bundle for forming the core fiber bundle 24 and a high-strength fiber bundle for forming a first outer peripheral fiber layer 28 is formed by bundling a plurality of threads 50 . Each of the filaments 50 is approximately 1 mm in diameter.

20 is a side view illustrating the in 19 shown rope body 21 in a plurality of layers so that each of the layers is exposed. The plurality of threads 50 are arranged in parallel so as to extend in a longitudinal direction of the cord body 21 .

21 Fig. 13 is a side view showing a first example of Fig 20 illustrated thread 50. 22 Fig. 14 is a side view showing a second example of Fig 20 thread 50 shown. Each of the threads 50 is formed by bundling a plurality of high-strength fiber filaments 51 . The high-strength fiber filament 51 is the smallest unit of thread for high-strength fibers. The high-strength fiber filament 51 has a diameter ranging from several µm to several tens µm.

In the first example, a plurality of high-tenacity fiber filaments 51 are arranged in parallel so as to extend in a longitudinal direction of the cord body 21 . In the second example, a plurality of high-tenacity fiber filaments 51 are twisted together.

A configuration of the strap 7 is the same as that of the strap 7 according to the third embodiment except for the sectional structure of FIG 19 rope body 21 illustrated. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the third embodiment.

Further, the high-strength fiber bundle is formed by bundling a plurality of filaments 50 . Thus, the core fiber bundle 24 and a first outer peripheral fiber layer 28 can be formed more easily than in a case where a plurality of high-strength fiber filaments 51 in an unbundled state are used as the thread 50 .

Furthermore, the plurality of threads 50 are arranged in parallel so as to extend in the longitudinal direction of the cord body 21 . With this arrangement, a modulus of elasticity of the belt 7 as a whole in the longitudinal direction is increased, thereby being able to suppress the elongation of the belt 7 .

However, when the belt 7 is bent, a compressive stress is applied to the filaments 50 on an inner side in a bending direction rather than those at the center of the cord body 21 when viewed in cross section. As a result is a burden not uniformly applied to the whole high strength fiber bundles. Thus, the belt 7 according to the twelfth embodiment is effective when the cord bodies 21 are comparatively thin. Further, the belt 7 according to the twelfth embodiment is desired to be used for an elevator having a large ratio of a diameter D of the traction sheave 5 to a diameter “d” of the rope body 21, specifically, a large bending radius ratio D/d.

Further, when the plurality of high-strength fiber filaments 51 are arranged in parallel so as to extend in the longitudinal direction of the cord body 21 as in the first example, the plurality of high-strength fiber filaments 51 is more effective as a high-strength fiber bundle.

Meanwhile, when the plurality of high-tenacity fiber filaments are twisted together as in the second example, the plurality of high-tenacity fiber filaments 51 need not have the same length. Thus, the thread 50 can be formed more simply.

Thirteenth embodiment

Next is 23 12 is an enlarged sectional view of a rope body 21 of a belt 7 according to a thirteenth embodiment. 24 is a side view illustrating the in 23 illustrated rope body 21 in a plurality of layers so that each of the layers is exposed. In the thirteenth embodiment, a plurality of threads 50 are twisted together.

Each of the core fiber bundles 24 and a first outer perimeter fiber layer 28 includes a plurality of high strength fiber strands 52 . Each of the high strength fiber strands 52 is formed by twisting the plurality of fibers 50 together.

In 23 the first outer perimeter fiber layer 28 has eight high strength fiber strands 52 . Furthermore, the core fiber bundle 24 is formed from a high-strength fiber strand 52 .

A configuration of the belt 7 is the same as that of the belt 7 according to the third embodiment except that the high-strength fiber bundle is formed by bundling the plurality of threads 50 and that the plurality of threads 50 are twisted together. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the third embodiment.

Further, the high-strength fiber bundle formed by bundling the plurality of filaments 50 enables easy formation of the core fiber bundle 24 and the first outer peripheral fiber layer 28.

When the plurality of filaments 50 are twisted, compressive stress that may be generated in the high-strength fiber bundle can be reduced. As a result, even if a material comparatively not resistant to compression is used as a material for the high-strength fiber bundle, damage to the high-strength fiber filaments 51 can be suppressed.

Further, the high strength fiber bundle includes a plurality of high strength fiber strands 52 to form each of the core fiber bundle 24 and the first outer peripheral fiber layer 28 . As described above, a load may be distributed throughout the high strength fiber strand 52 when the plurality of filaments 50 are twisted together.

Further, even if the high-strength fiber strand 52 has a seam between the filaments 50 in a longitudinal direction of the high-strength fiber strand 52, the strength of the rope body 21 as a whole can be secured by using the plurality of filaments 50 twisted together. Thus the thread 50 does not have to extend continuously over the entire length of the cable body 21 . As a result, the manufacturing cost of the filaments 50 can be reduced. Specifically, each of the high-tenacity fiber strands 52 may have a plurality of seams between the filaments 50 adjacent to one another in the longitudinal direction of the high-tenacity fiber strand 52 .

Further, in the twelfth and thirteenth embodiments, it is considered that each of the filaments 50 is formed using a filament resin. Accordingly, the threads 50 can be handled easily.

Examples of a method of forming the thread with a thread resin include a method of impregnating a bundle of a plurality of high-strength fiber filaments 51 with a thread resin and forming the bundle into a thread having a circular cross section. The examples also include a method of covering an outer periphery of a bundle of a plurality of high-tenacity fiber filaments 51 with a thread resin and forming the bundle into a thread having a circular cross section.

It is considered that a flexible resin is used as the thread resin so that the flexibility of the rope bodies 21 and the flexibility of the belt 7 as a whole are secured. It is possible to use an epoxy resin or a urethane resin as the flexible resin. These flexible resins do not break but can easily bend when subjected to an external force.

The epoxy resin used as the thread resin is a solid formed by curing a mixture of a liquid main substance and an additive. The principal is selected from the group consisting of an epoxy blend and epoxidized polybutadiene. The epoxy mixture has one or more linkages selected from the group consisting of a polyoxyalkylene linkage and a urethane linkage and two or more epoxy groups in molecules. The epoxidized polybutadiene has two or more epoxy groups in molecules.

When the urethane resin is used as the thread resin, it is considered to use an ether-based urethane resin in view of resistance to hydrolysis. Examples of the ether-based urethane resin include those obtained by curing ether-based polyol with various polyisocyanate mixtures. As the ether-based polyol, polytetramethylene ether glycol, polypropylene glycol or the like is used.

The use of the epoxy resin or urethane resin described above enables the filament 50 having a circular shape to be easily formed. Furthermore, the use of the above-mentioned resins enables closer contact between the high-strength fiber filaments 51. In addition, sufficient flexibility after curing can be secured.

Furthermore, all of the plurality of filaments 50 need not be formed with the filament resin. Specifically, at least one filament 50 must be formed with the filament resin.

Fourteenth embodiment

Next is 25 12 is an enlarged sectional view of a rope body 21 of a belt 7 according to a fourteenth embodiment. In the fourteenth embodiment, an outer periphery of each high-strength fiber strand 52 is covered with a strand covering body 53 made of resin. As a material for the strand covering body 53, a resin having high wear resistance and low friction properties, such as polyethylene or polypropylene, is used.

A configuration of the belt 7 is the same as that of the belt 7 according to the thirteenth embodiment except that the outer periphery of each of the high-strength fiber strands 52 is covered with the strand covering body 53 made of resin. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the thirteenth embodiment.

Further, the outer periphery of each of the high-strength fiber strands 52 is covered with the strand covering body 53 made of a resin. Thus, abrasion of the high-strength fiber strands 52 can be suppressed.

Not all of the plurality of high strength fiber strands need be covered with the strand covering bodies 53 . Specifically, at least one high-strength fiber strand 52 must be sheathed with the strand sheathing body 53 .

Fifteenth embodiment

Next is 26 12 is an enlarged sectional view of a rope body 21 of a belt 7 according to a fifteenth embodiment. In the fifteenth embodiment, a densification process is performed on an outer periphery of each high-strength fiber strand 52 . As a result of the compression process, a cross section of the high-strength fiber strand 52, which is perpendicular to a longitudinal direction of the high-strength fiber strand 52, has a circular shape.

A plurality of high strength fiber strands 52 to form a first outer peripheral fiber layer 28 are collectively covered with a strand covering body 42 . A high-strength fiber strand 52 for forming a core fiber bundle 24 is not covered with a strand covering body 53 .

A configuration of the belt 7 is the same as that of the belt 7 according to the fourteenth embodiment except for the sectional structure of FIG 26 rope body 21 illustrated. Further, a method for manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the fourteenth embodiment.

Further, the high-strength fiber strand 52 having a circular sectional shape formed by the compaction process is used. Thus, a density of the high-strength fibers can be improved.

Not all of the plurality of high tenacity fiber strands 52 need have a circular sectional shape formed by the densification process. Specifically, at least one high-strength fiber strand 52 must have a circular cross-section formed by the densification process.

Sixteenth embodiment

Next is 27 12 is an enlarged sectional view of a cord body 21 of a belt 7 according to a sixteenth embodiment. In the sixteenth embodiment, a compacting process is performed on an outer periphery of each first skin strand. As a result of the compression process, a cross section of each of the first skin layer strands 30, which is perpendicular to a longitudinal direction of the first skin layer strand 30, has a circular shape.

Each core rope 23 according to the sixteenth embodiment has twelve core strands 26 . Each first strand layer 29 has twenty first skin layer strands 30 . Each of the core strands 26 has a smaller diameter than a diameter of each of the first skin strands 30 .

Similar to the first skin layer strands 30 according to the twelfth embodiment, each of the first skin layer strands 30 has nineteen first skin layer member wires 31 . More specifically, each of the first skin layer strands 30 has a first center panel wire, nine first intermediate panel wires, and nine first outer peripheral panel wires.

A configuration of the strap 7 is the same as that of the strap 7 according to the third embodiment except for a sectional structure of FIG 27 rope body 21 illustrated. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the third embodiment.

Further, each of the first skin layer strands 30 has a circular sectional shape formed by the compression process. Thus, a contact surface pressure of each of the first skin layer strands 30 on the first outer peripheral fiber layer 28 is reduced. As a result, damage to the first outer peripheral fiber layer 28 can be suppressed.

Not all of the plurality of first skin strands 30 need have a circular sectional shape formed by the densification process. Specifically, at least a first skin strand 30 must have a circular cross-section formed by the compaction process.

Further, in the embodiments in which the plurality of first skin layer strands 30 are provided, that is, the embodiments other than the third embodiment, at least one first skin layer strand 30 may have a circular sectional shape formed by the compaction process.

Seventeenth embodiment

Next is in 28 12 is an enlarged sectional view of a cord body 21 of a belt 7 according to the seventeenth embodiment. In the seventeenth embodiment, a densification process is performed on an outer periphery of each core strand 26 . As a result of the compaction process, a cross section of each of the core strands 26, which is perpendicular to a longitudinal direction of the core strand 26, has a circular shape.

A configuration of the belt 7 is the same as that of the belt 7 according to the sixteenth embodiment except for a sectional structure of FIG 28 rope body 21 illustrated. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the sixteenth embodiment.

Further, each of the core strands 26 has a circular sectional shape formed by the compaction process. Thus, a contact surface pressure of each of the core strands 26 on a first outer peripheral fiber layer 28 is reduced. Fer ner, a contact surface pressure of each of the core strands 26 on a core fiber bundle 24 is reduced. As a result, damage to the first outer peripheral fiber layer 28 and the core fiber bundle 24 can be suppressed.

Not all of the plurality of core strands 26 need have a circular sectional shape formed by the compaction process. Specifically, at least one core string 26 must have a circular cross-section formed by the compaction process.

Further, in the embodiments in which the plurality of core strings 26 are provided, that is, the embodiments other than the sixteenth embodiment, at least one core string 26 may have a circular sectional shape formed by the compaction process.

Further, in the embodiments in which the plurality of second skin strands 37 are provided, at least one second skin strand 34 may have a circular sectional shape formed by the compaction process.

Further, in the embodiments in which the plurality of center strands 37 are provided, at least one center strand 37 may have a circular sectional shape formed by the compaction process.

Eighteenth embodiment

Next is 29 14 is a sectional view of a belt 7 according to an eighteenth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. The belt 7 according to the eighteenth embodiment has a plurality of cord bodies 21 . The plurality of wire bodies 21 includes two or more types of wire bodies 21 having different cross sections. The term "different cross-sections" refers to at least one of different diameters of the cross-sections and different sectional structures. In this example, the plurality of wire bodies 21 includes two types of wire bodies 21 with different diameters.

More specifically, each of the four cord bodies 21 arranged at both ends of the belt 7 in a width direction of the belt 7 has a smaller diameter than a diameter of each of the six cord bodies 21 arranged at a center of the belt 7 in the width direction are.

A configuration of the belt 7 is the same as that of the belt 7 according to the eleventh embodiment except that two kinds of cord bodies 21 having different diameters are provided. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the eleventh embodiment.

Furthermore, as in 3 and 4 As illustrated, when the belt 7 is wound around the traction sheave 5 with the crown 5b, different tensions are applied to the plurality of rope bodies 21 depending on the positions of the rope bodies 21 in the belt 7 width direction. In this case, wire bodies 21 having different cross sections may be arranged depending on the positions of the wire bodies 21 in the width direction of the belt 7 . Accordingly, a load can be uniformly distributed to the wire bodies 21 .

The plurality of wire bodies 21 may include three or more types of wire bodies 21 with different diameters.

Further, a plurality of types of wire bodies 21 selected from the wire bodies 21 according to the first to seventeenth embodiments may be combined and arranged in the same belt 7 .

Nineteenth embodiment

Next is 30 14 is a sectional view of a belt 7 according to a nineteenth embodiment, which is perpendicular to a longitudinal direction of the belt 7. FIG. The belt 7 according to the nineteenth embodiment has eight cord bodies 21 .

The eight wire bodies 21 are defined as a first wire body, a second wire body, and so on. to an eighth cord body from one end to the other end of the belt 7 in a width direction of the belt 7 . In this case, each of a distance between the second cable body and the third cable body and a distance between the sixth cable body and the seventh cable body is greater than each of the distances between the adjacent ones of the other cable bodies 21. Specifically, the distances between the adjacent cable bodies 21 in the width direction of the belt 7 has two different distances.

When the belt 7 has three or more cord bodies as described above, the distances between the cord bodies 21 adjacent to each other may have a variety of mutually different distances.

A configuration of the belt 7 is the same as that of the belt 7 according to the eleventh embodiment except that the pitches between the cord bodies 21 adjacent to each other have different pitches. Further, a method of manufacturing the belt 7 and a configuration of an elevator are the same as those according to the first embodiment.

The belt 7 mentioned above and an elevator using the same offer the same effects as those achieved in the eleventh embodiment.

When the belt 7 has different pitches between the adjacent rope bodies 21 and is wound around the traction sheave 5 with the crown 5b, a load can be distributed to the rope bodies 21 uniformly.

The distances between the adjacent cable bodies 21 can include three or more different distances.

Further, a plurality of kinds of cord bodies 21 having different cross sections may be combined and arranged in the same belt 7, and the distances between the cord bodies 21 adjacent to each other may be different from each other. Specifically, the eighteenth embodiment and the nineteenth embodiment can be implemented in combination.

Furthermore, in the first to nineteenth embodiments, at least one steel-made member included in the plurality of wire bodies 21 may be plated. For example, the core wire members 25 may be plated. Further, the element wires for forming the core strands 26, the first skin layer strands 30, the second skin layer strands 34, and the center strand 37 may be clad. By means of plating, corrosion of steel-made members can be suppressed.

Further, the high-strength fiber bundle formed by bundling a plurality of threads 50 as described in the twelfth to fifteenth embodiments may be used as the high-strength fiber bundles according to the first to eleventh and sixteenth to nineteenth embodiments.

In the embodiments, the number of the cord bodies 21 is not limited to a specific number. Furthermore, in the embodiments, the amount of high-strength fibers, the number of element core wires, the number of strands, and the number of element wires to form one strand are not limited to any specific amount or numbers.

Further, the belt 7 may have a strength member different from the rope bodies 21 described in the first to nineteenth embodiments.

One type of elevator is not on the in 1 illustrated limited. For example, the elevator can be a 2:1 traction elevator.

Further, the elevator may be, for example, a machine-room-less elevator, a double-decker elevator, and a single-shaft multi-car system elevator. The one-shaft multi-car system is a system in which an upper car and a lower car located directly below the upper car are vertically moved in the common elevator shaft independently.

Further, in the first to nineteenth embodiments, the belt 7 is used as a supporting body for supporting the car 8 of the elevator. However, the belt 7 is not limited to being used as a supporting body. For example, the belt 7 can also be used as a governor rope or a balance body of an elevator. Furthermore, the belt 7 can also be used for a device other than an elevator, for example a crane system.

Reference List

3

elevator,

5

traction sheave,

7

Belt,

8th

Cabin,

9

counterweight,

11

compensating body,

21

rope body,

22

rope sheath body,

23

core rope,

24

core fiber bundle,

25

core wire element,

26

core strand (core wire element),

27

core element wire,

28

first outer perimeter fiber layer,

29

first strand layer,

30

first outer layer strand,

31

first outer layer element wire,

32

second outer perimeter fiber layer,

33

second strand layer,

34

second outer layer strand,

35

second outer layer element wire,

36

center wire element,

37

middle strand (middle wire element),

38

center strand element wire,

39

core resin layer,

40

center fiber core,

41

strand fiber core,

50

Thread,

52

high strength fiber strand,

53

strand sheathing body.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• JP 5713682 B [0003]
• JP2018177535A [0003]

Claims (36)

Straps comprising: a plurality of cord bodies arranged to be spaced apart from each other in a width direction when viewed in cross section perpendicular to a longitudinal direction; and a cable covering body configured to cover the plurality of cable bodies, wherein the plurality of cord bodies each comprise core cords, and each of the core ropes comprising: a core fiber bundle formed of one high-strength fiber bundle or a plurality of twisted high-strength fiber bundles; and a plurality of steel-made core wire members provided on an outer periphery of the core fiber bundle. straps after claim 1 wherein at least one of the plurality of element core wires is a core strand, and wherein the core strand comprises a plurality of steel-made core element wires twisted together. straps after claim 2 wherein the at least one core strand comprises a strand fiber core formed of a high-strength fiber bundle provided at a center of the core strand. straps after claim 2 or 3 wherein a cross section of the at least one core strand, which is perpendicular to the longitudinal direction, has a circular shape formed by a pre-process. belt after one of the Claims 1 until 4 wherein at least one of the cord bodies comprises: a first outer peripheral fiber layer provided on an outer circumference of the core cord and formed of a high-strength fiber bundle; and a first strand layer provided on an outer periphery of the first outer peripheral fiber layer, the first strand layer having a plurality of first skin strands, and each of the first skin strands having a plurality of first skin member wires made of steel twisted together. straps after claim 5 wherein a cross section of at least one of the first skin layer strands, which is perpendicular to the longitudinal direction, has a circular shape formed by a pre-process. straps after claim 5 or 6 wherein at least one of the rope bodies comprises: a second outer peripheral fiber layer provided on an outer periphery of the first strand layer and formed of a high-strength fiber bundle; and a second strand layer provided on an outer periphery of the second outer peripheral fiber layer, the second strand layer having a plurality of second skin strands, and each of the second skin strands having a plurality of second skin member wires made of steel twisted together. straps after claim 7 wherein a cross section of at least one of the second skin layer strands, which is perpendicular to the longitudinal direction, has a circular shape formed by a pre-process. belt after one of the Claims 1 until 8th wherein each of the core cords further includes a steel-made center wire member provided at a center of the core fiber bundle. straps after claim 9 wherein the center wire member is a center strand, and wherein the center strand includes a plurality of center strand member wires made of steel twisted together. straps after claim 10 wherein the center strand has a center fiber core formed of a high-strength fiber bundle provided at a center. belt after one of the Claims 1 until 11 wherein each of the core cords further includes a core resin layer provided between the core fiber bundle and the plurality of core wire members. belt after one of the Claims 1 until 12 , in which the high-strength fiber bundle is formed by bundling a plurality of threads. straps after Claim 13 wherein the plurality of threads are arranged in parallel to extend in a longitudinal direction of the cord body. straps after Claim 13 , in which the plurality of threads are twisted together. strap after one Claims 1 until 12 , in which the high-strength fiber bundle is formed from a plurality of high-strength fiber strands, and in which each of the high-strength fiber strands passes through Twisting together a plurality of threads is formed. straps after Claim 16 wherein each of the high-strength fiber strands has a plurality of seams between the filaments adjacent to each other in a longitudinal direction of the high-strength fiber strand. straps after Claim 16 or 17 wherein at least one of the high-strength fiber strands has an outer periphery covered with a strand covering body made of resin. belt after one of the Claims 16 until 18 wherein a cross section of at least one of the high-strength fiber strands, which is perpendicular to the longitudinal direction, has a circular shape formed by a preliminary process. belt after one of the Claims 13 until 19 wherein at least one of the filaments is formed using a filament resin. straps after claim 20 in which a flexible resin is used as the thread resin, and in which an epoxy resin or a urethane resin is used as the flexible resin. straps after claim 20 wherein an epoxy resin is used as the filament resin, the epoxy resin being a solid formed by curing a mixture of a liquid principal and an additive, the principal being selected from the group consisting of an epoxy mixture and epoxidized polybutadiene, wherein the epoxy mixture has one or more linkages selected from the group consisting of a polyoxyalkylene linkage and a urethane linkage and has two or more epoxy groups in molecules, and wherein the epoxidized polybutadiene has two or more epoxy groups in molecules. belt after one of the Claims 1 until 22 wherein one or more fibers selected from the group consisting of a carbon fiber, a glass fiber, a polypara-phenylene-benzo-bis-oxazole fiber, an aramid fiber, a polyarylate fiber and a basalt fiber are used as a material of the high-strength fiber bundle. belt after one of the Claims 1 until 23 , in which the cable covering body is made of an elastomer. straps after Claim 24 , in which the rope covering body contains a flame retardant. belt after one of the Claims 1 until 25 wherein at least one of the steel-made members included in the plurality of cord bodies is plated. belt after one of the Claims 1 until 26 wherein the plurality of wire bodies includes two or more types of wire bodies having different cross sections. belt after one of the Claims 1 until 27 wherein the plurality of cord bodies comprises three or more cord bodies, and wherein distances between the cord bodies adjacent to each other include a plurality of distances different from each other. A method of manufacturing the belt according to any one of Claims 1 until 28 wherein the method comprises continuously covering the plurality of cable bodies with the cable covering body in a state where tension is uniformly applied to the plurality of cable bodies. Elevator comprising: a car; and the strap after one of the Claims 1 until 28 . elevator after Claim 30 , in which the cabin is supported by the belt. elevator after Claim 31 , further comprising an elevator having a traction sheave, wherein the belt has two or more belts, and the two or more belts are wound around an outer periphery of the traction sheave to be spaced from each other in an axial direction of the traction sheave. elevator after Claim 32 in which each of portions of the traction sheave, the portions being in contact with the belts, have such a diameter that a center portion of each of the belts in the width direction outwards in a radial direction of the traction sheave with respect to both end portions of each of the belts in the width direction protrudes. elevator after Claim 32 or 33 wherein the traction sheave has a diameter that is forty times or less a largest of the diameters of the plurality of cable bodies. Elevator after one of Claims 32 until 34 , further comprising: a counterweight carried by the belts; and one between the cab and the counterweight carried balancing body, wherein a total weight of the balancing body is half or less of a total weight of all belts. Elevator after one of Claims 31 until 35 , with the cabin moving a distance of 75 meters or more.

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