WO2006038254A1

WO2006038254A1 - Elevator apparatus

Info

Publication number: WO2006038254A1
Application number: PCT/JP2004/014337
Authority: WO
Inventors: Atsushi Mitsui
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-09-30
Filing date: 2004-09-30
Publication date: 2006-04-13
Also published as: JPWO2006038254A1; CN1886321A; EP1795483A4; EP1795483A1

Abstract

In an elevator apparatus, an elevator car is suspended in an elevator shaft by a main rope. The car is provided with a car guide device engaging with a car guide rail. A speed regulator sheave is provided at the upper part of the elevator shaft. A speed regulator rope is passed over the speed regulator sheave. The speed regulator rope is circulated as the car is lifted and lowered. A resin-coated rope, having on its outer periphery a coating body of a resin material, is used as the main rope and the speed regulator rope. A non-lubricated guide device is used as the car guide device.

Description

Specification

Elevator equipment

Technical field

TECHNICAL FIELD [0001] The present invention relates to an elevator apparatus in which a resin-coated rope provided with a coating body having a resin material force on the outer peripheral portion is used as a main rope.

Background art

[0002] A main rope of a conventional elevator apparatus is formed by twisting a plurality of strands. Each strand is formed by twisting a plurality of steel strands. Each strand is covered with a strand covering made of grease. Further, the outer peripheral portion of the entire main rope is covered with a rope covering made of a resin (see, for example, Patent Document 1).

[0003] Patent Document 1: Japanese Patent Laid-Open No. 2001-262482

Disclosure of the invention

Problems to be solved by the invention

[0004] When the conventional resin-coated rope as described above is directly applied to an ordinary elevator apparatus, there is a possibility that a predetermined tractive force cannot be stably generated due to the influence of equipment in the hoistway. .

[0005] The present invention has been made to solve the above-described problems, and provides an elevator apparatus that can stably generate a necessary tractive force while using a resin-coated loop. For the purpose.

Means for solving the problem

[0006] An elevator apparatus according to the present invention includes a car guide rail provided in a hoistway, a car that is lifted and lowered along the car guide rail along the car guide rail, and a force cage, and is associated with the force guide rail. The car guide device, the main rope that suspends the force cage, the governor sheave provided at the top of the hoistway, and the governor sheave are wound around the ends, and both ends are connected to the car. And a speed governor rope that circulates as the car is raised and lowered, and the main rope and the speed governor rope are provided with a covering made of a resin material cover on the outer periphery. A rope is used, and an oil-free guide device is used as a force guide device. ing.

Brief Description of Drawings

FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention.

2 is a cross-sectional view showing a first structural example of a resin-coated rope used for the main rope, governor rope, and compensating rope of FIG. 1.

FIG. 3 is a cross-sectional view showing a second structural example of a resin-coated rope used for the main rope, governor rope and compensating rope of FIG. 1.

FIG. 4 is a configuration diagram showing an elevator apparatus according to Embodiment 2 of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.

FIG. 1 is a configuration diagram showing an elevator apparatus (machine room-less elevator) according to Embodiment 1 of the present invention. In the figure, a pair of car guide rails 22 and a pair of counterweight guide rails 23 are installed in a hoistway 21. The car 24 is moved up and down in the hoistway 21 along the car guide rail 22. The counterweight 25 is moved up and down in the hoistway 21 along the counterweight guide rail 23.

A machine base (support beam) 26 is fixed to the upper part of the hoistway 21. On the machine base 26, a driving device (lifting machine) 27 that generates a driving force for raising and lowering the force cage 24 and the counterweight 25 is supported. The drive device 27 has a drive device body 28 including a motor and a brake, and a drive sheave 29 rotated by the drive device body 28. A rotating baffle 30 is attached to the machine base 26.

[0010] A plurality of main ropes 31 (only one is shown in the figure) are wound around the drive sheave 29 and the deflector wheel 30. The main rope 31 has a car side end connected to the top of the force cage 24 and a counterweight side end connected to the top of the counterweight 25. That is, the force 24 and the counterweight 25 are suspended in the hoistway 21 by the main rope 31 in a 1: 1 roving manner.

A speed governor 32 for detecting the speed of the force 24 is supported on the machine base 26.

The governor 32 has a governor sheave 33. The governor sheave 33 has a governor rope 3 4 is wrapped around. Both ends of the governor rope 34 are connected to the force lever 24 via an emergency stop operating mechanism 35 provided on the force force 24. Therefore, when the force 24 moves up and down, the governor rope 34 is circulated and the governor sheave 33 is rotated.

A governor rope tensioning wheel 36 is provided in the lower part of the hoistway 21. The governor rope tensioner 36 is wound around the lower end of the governor rope 34.

[0013] Between the car 24 and the counterweight 25, a plurality of compensating ropes 37 (only one is shown in the figure) are suspended. The compensating rope 37 has a car-side end connected to the lower part of the car 24 and a counterweight-side end connected to the lower part of the counterweight 25.

A compensating device 38 is provided in the lower part of the hoistway 21. The compensating device 38 is provided with a plurality of compensating rope tensioning wheels 39a and 39b. The lower end of the compensating glove 37 is wrapped around the compensating rope-covered wheels 39a and 39b.

[0015] As the main rope 31, the governor rope 34, and the compensating rope 37, a resin-coated rope is used in which a coated body made of a resin material is provided on the outer peripheral portion. The diameters of the main rope 31, the governor rope 34, and the compensating rope 37 are the same. Furthermore, the cross-sectional structures of the main rope 31, the governor rope 34, and the compensating rope 37 are the same.

A plurality of car guide devices 41 that are engaged with the force guide rails 22 are mounted on the upper and lower parts of the force 24. A plurality of counterweight guide devices 42 that engage with the counterweight guide rail 23 are mounted on the upper and lower portions of the counterweight 25. As the force guide device 41 and the counterweight guide device 42, an oil-free guide device that does not require oil supply is used. As the oil-free guide device, a sliding guide shoe mainly composed of wax or polyethylene can be used.

FIG. 2 is a cross-sectional view showing a first structural example of a resin-coated rope used for the main rope 31, the governor rope 34 and the compensating rope 37 of FIG. In the figure, the resin-coated rope has a core rope 1 and a second child tie layer 11 surrounding the outer periphery of the core rope 1. The core rope 1 is composed of a core tie 3 located in the center and a composite stranded on the outer periphery of the core tie 3. It has several (eight here) first bindings 4. The core binding 3 is composed of three or more layers.

The core restraint 3 has a plurality of steel core strands 5 twisted together. As the core strand 5, a plurality of strands having different diameters are used. That is, a plurality of core strands 5a and core strands 5b that are disposed in the gaps between the core strands 5a and have a smaller diameter than the core strand 5a are used.

[0019] Each of the first child restraints 4 is composed of a plurality of first strands 6 made of steel (here, a total of seven, one center and six outer circumferences), and a plurality of these twisted strands. The first strand 6 of the first strand 6 has a first tying-resin-covered body 7 made of resin that is independently coated on each outer periphery. The first tying cover 7 is made of polyethylene resin, for example.

[0020] The second child tie layer 11 is arranged in the gap between the second child tie layer body 16 and the second child tie 8 adjacent to each other on the outer periphery of the second child tie layer body 16 It has a plurality of (in this case, 8) auxiliary straps 13 and a second secondary binding layer covering 12 made of resin that covers the outer periphery of the second binding layer main body 16 and the auxiliary bindings 13. ing.

The second child tie layer body 16 is composed of a plurality (eight in this case) of second child ties 8 twisted around the outer periphery of the core rope 1. Each of the second child restraints 8 has a plurality of second steel strands 9 that are twisted together. As the second strand 9, a plurality of strands having different diameters are used. That is, as the second strand 9, a plurality of second strands 9a and a second strand 9b that is disposed in the gap between the second strands 9a and has a smaller diameter than the second strand 9a are used. ing.

[0022] The number of second child restraints 8 is the same as the number of first child restraints 4. Further, the twist length of the second child restraint 8 is the same as the twist length of the first child restraint 4. Further, the second child restraint 8 is twisted in parallel with the first child restraint 4 so as to be in line contact with the adjacent first child restraint 4.

[0023] The second child tie layer covering 12 is made of a high-friction resin material having a friction coefficient of 0.2 or more, for example, a polyurethane resin.

[0024] Each of the auxiliary straps 13 includes a plurality of (7 in this case) steel auxiliary strands 14 twisted together and an outer sheath coated with an auxiliary cord made of resin. It has a covering 15. The auxiliary strap covering 15 is made of, for example, polyethylene resin. The diameter of the auxiliary strap 13 is set smaller than the diameter of the second strap 8. Also, the twist length of the auxiliary strap 13 and the second strap The twist length of 8 is the same. Further, the auxiliary strap 13 is twisted in parallel with the second strap 8 so as to be in line contact with the adjacent secondary strap 8.

FIG. 3 is a cross-sectional view showing a second structure example of the resin-coated rope used for the main rope 31, the governor rope 34 and the compensating rope 37 shown in FIG. In this example, a resin-coated rope having a flat cross-sectional shape, that is, a belt-shaped resin-coated rope (flat belt) is shown. In the figure, a rope main body 51 has seven child-bound assemblies 52 and a resin-made sheath 53 that covers and integrally covers the child-entrant assemblies 52.

[0026] The child tied assemblies 52 are arranged side by side in a cross section (Fig. 3) perpendicular to the longitudinal direction of the rope body 51. In other words, the seven tying assemblies 52 are spaced in a straight line along the width direction of the rope body 51 in a cross section perpendicular to the longitudinal direction of the rope body 51! They are arranged side by side.

[0027] Each child-bound assembly 52 is disposed around the core material 54 and twisted around the core material 54. The core material 54 is made of a resin extending along the longitudinal direction of the rope body 51. Each of the book's ties 55. Each tie 55 includes a steel core wire 56 as a strand and six outer peripheral wires 57 as strands arranged around the core wire 56 and twisted in parallel with each other.

[0028] In each child binding assembly 52, the three child bindings 55 are arranged around the core member 54 in a triangular shape. The child binding assemblies 52 are arranged so that the cross-sectional arrangement shapes of the child bindings 55 are alternately reversed.

[0029] As the material of the core material 54, for example, thermoplastic resin such as polypropylene resin, polyethylene resin or vinyl, or synthetic resin fiber such as high-strength aramid fiber or polypropylene fiber is twisted at a high density. Combined ones can be used.

[0030] The covering 53 is made of, for example, a thermoplastic ether polyurethane resin. An adhesive 58 is applied to at least the outer peripheral portion of each tie 55 so as to be integrated with the covering 53. That is, the strap 55 and the covering 53 are bonded to each other via the adhesive 58.

[0031] According to such an elevator apparatus, since the oil-free guide apparatus is used as the car guide apparatus 41, it is possible to prevent the lubricating oil from being scattered or sprayed from the force guide apparatus 41. This prevents the lubricant from adhering to the surface of the resin-coated rope, This prevents the tractive force (friction force) from being reduced. Therefore, the necessary tractive force can be stably generated while using the resin-coated rope.

[0032] Further, by using a resin-coated rope for the main rope 31, it is possible to reduce the size of the drive sheave 29, improve the tractive ability, extend the life of the main rope 31, and extend the life of the sheaves.

[0033] Furthermore, even if a grease coated rope is used for the governor rope 34, the resin coated rope is prevented from slipping with respect to the governor sheave 33, and the accuracy of detecting the force speed is improved. Can do.

[0034] Furthermore, if the speed governor 32 detects an overspeed (TRIP speed) of the car 24, the speed catcher rope 34 is frictionally braked by the rope catch of the speed governor 32, and the emergency stop device is activated. Force By preventing the lubricant from adhering to the governor rope 34, which is a grease-coated rope, the governor rope 34 can be braked and stopped more reliably with a small friction braking force. For this reason, the governor 32 can be reduced in size.

[0035] Further, since the resin-coated rope is more flexible than the steel rope, by using the resin-coated rope as the governor rope 34, the small-diameter shaft of the governor rope tensioning wheel 36 can be obtained. The pit size of the hoistway 21 can be reduced.

[0036] Further, since the oil-free guide device is used as the counterweight guide device 42, it is possible to more reliably prevent the lubricant from adhering to the resin-coated rope.

[0037] Furthermore, since the main rope 31, the governor rope 34, and the compensating rope 37 have the same diameter and cross-sectional structure, rope accessories such as rope end fixtures, installation tools, maintenance tools, An inspection jig or the like can be shared.

[0038] Embodiment 2.

Next, FIG. 4 is a block diagram showing an elevator apparatus according to Embodiment 2 of the present invention. In the figure, a balancing chain 43 is suspended between the force 24 and the balancing weight 25. The counterweight chain 43 has a force side end connected to the lower portion of the force 24 and a counterweight side end connected to the lower portion of the counterweight 25. Other configurations are the same as those in the first embodiment.

[0039] As described above, when the lifting / lowering stroke of the car 24 is short, the balancing chain 43 can be used instead of the balancing rope 37, and the same effect as in the first embodiment can be obtained. [0040] In place of the balancing rope 37 and the balancing chain 43, Whisperflex (registered trademark) or the like may be used.

In the above example, the drive device 27 is disposed in the upper part of the hoistway 21. However, the position of the drive device is not particularly limited. For example, the drive device 27 is placed in the machine room or the lower part of the hoistway. A little.

[0041] Further, as the car guide device and the counterweight guide device, an oil-free guide device having a guide roller may be used.

Furthermore, the main rope, governor rope, and compensating rope may have different cross-sectional structures.

Further, the roving method is not limited to 1: 1 roving, but may be, for example, 2: 1 roving.

Claims

The scope of the claims

[1] car guide rails provided in the hoistway,

A car that is raised and lowered in the hoistway along the car guide rail,

A force guide device provided on the force cage and engaged with the force guide rail; a main rope for suspending the cage;

A governor sheave provided above the hoistway; and

The governor rope is wound around the governor sheave and both ends are connected to the car and circulates as the car is raised and lowered

With

As the main rope and the governor rope, a resin-coated rope is used in which a covering body that also has a resin material strength is provided on the outer periphery.

An elevator apparatus characterized in that an oil-free guide apparatus is used as the car guide apparatus.

[2] A counterweight guide rail provided in the hoistway,

A counterweight suspended in the hoistway by the main rope and lifted in the hoistway along the counterweight guide rail; and

A counterweight plan device provided on the counterweight and engaged with the counterweight guide rail.

Further comprising

2. The elevator apparatus according to claim 1, wherein an oil-free guide apparatus is used as the counterweight guide apparatus.

[3] It further comprises a compensating rope suspended between the car and the counterweight,

The elevator apparatus according to claim 2, wherein a resin-coated rope is used as the compensating rope.

[4] The elevator apparatus according to claim 3, wherein the main rope, the governor rope, and the compensating rope have the same diameter and cross-sectional structure.

[5] As the main rope, a belt-shaped resin-coated rope having a flat cross-sectional shape is used. The elevator apparatus according to claim 1, wherein