WO2006018868A1

WO2006018868A1 - Elevator device

Info

Publication number: WO2006018868A1
Application number: PCT/JP2004/011828
Authority: WO
Inventors: Hideaki Kodera; Takao Nishida
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2004-08-18
Filing date: 2004-08-18
Publication date: 2006-02-23
Also published as: CN1826280A; EP1780161A4; EP1780161A1; JPWO2006018868A1

Abstract

In an elevator device, a cage is suspended in an elevator shaft by a main rope body. The main rope body is connected to an upper beam of the cage by a rope end connection device. The rope end connection device has a turnaround member on which the main rope body is wound and converting the direction of the main rope body and has a connection rod placed inside the upper beam and connected between an end section of the main rope body and the upper beam.

Description

Specification

Elevator equipment

Technical field

[0001] The present invention relates to an elevator apparatus in which a car and a counterweight are suspended in a hoistway by a main rope. Background art

[0002] In a conventional elevator apparatus, a force and a counterweight are suspended in a hoistway by a plurality of main ropes. The cage end of each main rope is connected to a retaining bar. Each retaining bar is connected to the upper beam of the force lever. Further, the retaining rod is disposed substantially perpendicular to the longitudinal direction of the upper beam and protrudes on the upper beam (see, for example, Patent Document 1).

[0003] Patent Document 1: Japanese Unexamined Patent Publication No. 2000-351538

Disclosure of the invention

Problems to be solved by the invention

[0004] In the conventional elevator apparatus configured as described above, since the retaining bar protrudes above the upper beam, a space for the retaining bar is required above the upper beam. The vertical distance from the floor of the top stop floor to the top of the hoistway becomes larger, and the vertical dimension of the entire hoistway becomes larger. In order to avoid this, a structure in which a pair of suspension vehicles on which the main rope is hung is provided at the lower part of the car and the main rope is passed through the lower part of the car (2: 1 roping * underslang system) However, the number of parts increases and the equipment cost and installation cost increase.

[0005] The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator apparatus that can reduce overhead dimensions with a simple configuration.

Means for solving the problem

[0006] An elevator apparatus according to the present invention includes a car room and an upper beam provided above the force car room, and the main rope body that suspends the car in the hoistway. And the main A rope end connection device is provided for connecting the rope body to the upper beam. The rope end connection device is provided with a turning member around which the main rope body is wound and turning the end of the main rope body, and inside the upper beam. It has a connecting rod which is arranged and connected between the end of the main rope body and the upper beam.

Brief Description of Drawings

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

FIG. 2 is a front view showing the car of FIG.

FIG. 3 is an enlarged front view showing the main part of FIG.

4 is a cross-sectional view taken along the line IV-IV in FIG.

FIG. 5 is a plan view showing a rope end connecting device of an elevator apparatus according to Embodiment 2 of the present invention.

FIG. 6 is a sectional view taken along line VI—VI in FIG.

FIG. 7 is a plan view showing a rope end connecting device of an elevator apparatus according to Embodiment 3 of the present invention.

8 is a cross-sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a plan view showing a rope end connecting device of an elevator apparatus according to Embodiment 4 of the present invention.

FIG. 10 is a sectional view taken along line X—X in FIG.

FIG. 11 is a plan view showing a rope end connecting device of an elevator apparatus according to Embodiment 5 of the present invention.

12 is a cross-sectional view taken along line XII—XII in FIG.

FIG. 13 is a plan view showing a rope end connecting device of an elevator apparatus according to Embodiment 6 of the present invention.

FIG. 14 is a sectional view taken along line XIV—XIV in FIG.

FIG. 15 is a front view showing a main part of a rope end connecting device for an elevator apparatus according to Embodiment 7 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 side view showing an elevator apparatus (in this example, a machine room-less elevator) according to Embodiment 1 of the present invention. In the figure, a pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed in the hoistway 1. The car 2 is raised and lowered in the hoistway 1 while being guided by the force and the guide rail. The counterweight 3 is moved up and down in the hoistway 1 by being guided by the counterweight guide rail. Further, the counterweight 3 is arranged behind the car 2 when viewed from the landing side so as to face the back of the car 2 when positioned at the same height as the car 2.

The force 2 has a force frame 4 and a cab 5 supported by the force frame 4. The front of the cab 5 is provided with power and doorways. Force ^: The doorway is opened and closed by a pair of cage doors 6. The hall entrance / exit provided at the hall is opened and closed by a pair of hall doors 7. The car door 6 and the landing door 7 are opened and closed by the driving force of a door motor (not shown) mounted on the force car 2.

The car frame 4 includes a lower frame 8, a pair of vertical columns 9 provided on the lower frame 8, and an upper beam 10 fixed between the upper ends of the vertical columns 9. The cab 5 is supported on the lower frame 8. The vertical columns 9 are arranged vertically on both sides of the cab 5. The upper beam 10 is arranged horizontally and horizontally with respect to the width direction of the cab 5.

A driving device (lifting machine) 11 that generates a driving force for raising and lowering the car 2 and the counterweight 3 is disposed in the upper part of the hoistway 1. The drive device 11 has a drive device body 12 including a motor and a brake, and a drive sheave 13 rotated by the drive device body 12. The drive device 11 is supported by a support beam (not shown) fixed to the upper part in the hoistway 1. The support beams are supported by force, at least part of the guide rails and counterweight guide rails, or by construction. Also, the deflector 14 is supported on the support beam.

A main rope body 150 including a plurality of main ropes 15 (only one is shown in FIG. 1) 15 is hung on the drive sheave 13 and the deflector wheel 14. Each main rope 15 has a heel side end portion 15 a connected to the upper beam 10 and a counterweight side end portion 15 b connected to the upper part of the counterweight 3. Car 2 and counterweight 3 are moved up and down in a 1: 1 roving manner by main rope 15. It is suspended in Road 1.

2 is a front view showing the car 2 in FIG. 1, FIG. 3 is a front view showing an enlarged main part of FIG. 2, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. In Fig. 2 and Fig. 3, a part of the upper beam 10 is shown broken away. A plurality of (as many as the main ropes 15) turning pulleys 21 as turning members are provided in the central portion of the upper beam 10 in the longitudinal direction. The turning pulley 21 can rotate independently about a shaft 22 attached to the upper beam 10.

A corresponding main rope 15 is hung on each turning pulley 21. A rope groove into which the main rope 15 is inserted is provided on the outer periphery of each turning pulley 21. The car-side end portion 15a of the main port 15 is turned 90 degrees or almost 90 degrees by being hooked on the turning pulley 21.

The upper beam 10 is formed with an upper beam groove 10a along the longitudinal direction. The entire turning pulley 21 is accommodated in the upper beam groove 10a. That is, the turning pulley 21 is disposed inside the upper beam 10. In the upper beam groove 10a, a pair of flat rod connecting portions 10b and 10c are fixed so as to face each other with a space therebetween. The rod connecting portions 10b and 10c are arranged symmetrically or substantially symmetrically with respect to the center in the width direction of the car 2. The rod connecting portions 10b and 10c are made of, for example, a metal plate welded in the groove 10a.

[0016] A metal connecting rod 23 is connected and fastened to the car-side end portion 15a of each main rope 15. Each connecting rod 23 penetrates either one of the rod connecting portions 10b and 10c. The connecting rod 23 is accommodated in the upper beam groove 10a. That is, the connecting rod 23 is disposed inside the upper beam 10. The connecting rod 23 is arranged horizontally or substantially horizontally along the longitudinal direction of the upper beam 10.

[0017] Between the end of the connecting rod 23 on the side opposite to the main rope 15 and the rod connecting portions 10b, 10c, a spring (a shirt spring) 24 is provided.

[0018] The rope end connecting device 25 of the first embodiment includes a turning pulley 21, a shaft 22, a connecting rod 23, and a spring 24. The main rope 15 is connected to the upper beam 10 by a rope end connecting device 25. The car-side end 15a of the main rope 15 is distributed to both sides of the car 2 in the width direction (longitudinal direction of the upper beam 10) by the turning pulley 21. In this example, as shown in Fig. 4, the four main ports 15 are divided into two. Thus, the main rope 15 is the width of the car 2 It is preferable to distribute as evenly as possible on both sides. Therefore, even when the number of the main ropes 15 is an odd number, it is preferable to distribute them to n and n + 1.

In the elevator apparatus using such a rope end connection device 25, the direction of the car side end portion 15 a of the main rope 15 is turned by the turning pulley 21. Specifically, the main rope 15 is vertical or almost vertical on the drive sheave 13 side from the turning pulley 21, and the main rope 15 is horizontal or almost horizontal on the connecting rod 23 side from the turning pulley 21. . For this reason, the connecting rod 23 can also be arranged horizontally or substantially horizontally inside the upper beam 10.

Accordingly, it is not necessary to secure an arrangement space of the connecting rod 23 on the upper beam 10 so that the connecting rod 23 does not protrude upward from the upper beam 10. As a result, the overhead dimension can be reduced, and consequently the vertical dimension of the entire hoistway 1 can be reduced. In addition, since the car 2 and the counterweight 3 are suspended by the 1: 1 roving method, the overall configuration can be simplified.

[0021] Further, since all the turning pulleys 21 are arranged on the same axis, the force S can be reduced to reduce the number of parts.

Furthermore, since the turning pulley 21 can rotate around the shaft 22, the main rope 15 can be prevented from sliding along the outer periphery of the turning pulley 21, and the deterioration due to wear of the main rope 15 can be prevented. Can be prevented.

Furthermore, since the main rope 15 is distributed as evenly as possible on both sides in the width direction of the force 2, it is possible to prevent the eccentric load from acting on the car 2 from the main rope 15 and stabilize the force 2. Can be moved up and down.

[0022] Embodiment 2.

5 is a plan view showing a rope end connecting device for an elevator apparatus according to Embodiment 2 of the present invention, and FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. An upper beam 31 is provided on the upper side of the force 2 (Fig. 1). The upper beam 31 has a pair of upper beam side surfaces 31a and 31b. The upper beam side surfaces 31a and 31b are arranged in parallel with a space therebetween. Further, the upper beam side surfaces 31a and 31b are arranged in parallel and horizontally in the width direction of the car 2.

[0023] Between the upper beam side surface portions 31a and 31b, a pair of flat rod connecting portions 32a and 32b are fixed so as to face each other with a space therebetween. Rod connection part 32a, 32b is the width of car 2 They are arranged symmetrically or almost symmetrically with respect to the center of the direction. The rod connecting portions 32a and 32b are made of a metal plate welded between the upper beams 31a and 31b, for example.

A cylindrical turning member 33 is provided at the longitudinal center of the upper beam 31. The turning member 33 is fixed to the upper beam 31. Force that can turn the turning pulley 21 of the first embodiment The turning member 33 of the second embodiment cannot rotate.

[0025] On the turning member 33, a force side end portion 15a of the main rope 15 is hung. A plurality of rope grooves into which the main rope 15 is inserted are provided on the outer periphery of the turning member 33. The car-side end portion 15a of the main rope 15 is turned 90 degrees or almost 90 degrees by striking the turning member 33.

[0026] The lower portion of the turning member 33 is disposed inside the upper beam 31, that is, between the upper beam side surface portions 31a and 31b. A metal connecting rod 23 is fastened and connected to the car-side end 15 a of each main rope 15. Each connecting rod 23 passes through one of the rod connecting portions 32a and 32b. The connecting rod 23 is disposed inside the upper beam 31. Further, the connecting rod 23 is disposed horizontally or substantially horizontally along the longitudinal direction of the upper beam 31.

[0027] A nut 34 that prevents the connection port 23 from coming off from the rod connection portions 32a and 32b is screwed to the end of the connection rod 23 on the side opposite to the main rope 15. The tension acting on the connecting rod 23 from the main rope 15 is received by the rod connecting portions 32a and 32b via the nut 34.

The rope end connecting device 35 of the second embodiment includes a turning member 33, a connecting rod 23, and a nut 34. The main rope 15 is connected to the upper beam 31 by a rope end connecting device 35. The car-side end 15a of the main rope 15 is alternately distributed to both sides of the car 2 in the width direction by the turning member 33. The drive sheave 13 is divided into two in the axial direction. That is, the drive sheave 13 has a first sheave portion 13a and a second sheave portion 13b. Other configurations are the same as those in the first embodiment.

[0029] In this way, when the connecting rod 23 is connected to the upper beam 31 without using a spring, the turning member 33 may not be able to rotate. As a result, all the main ropes 15 can be hung on the common turning member 33, the number of parts can be reduced, and the cost can be reduced.

[0030] When the main rope 15 rises from both sides of the turning member 33, the drive sheave 13 is divided into the first and second sheave portions 13a and 13b, so that the entire drive sheave 13 is reduced in size and weight. Ability to measure quantity S.

[0031] Embodiment 3.

Next, FIG. 7 is a plan view showing a rope end connecting device for an elevator apparatus according to Embodiment 3 of the present invention, and FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. In this example, a plurality of (one pair) cylindrical turning members 36 and 37 are fixed to the upper beam 31. The main rope 15 is distributed and hooked to one of the turning members 36 and 37. Other configurations are the same as those in the second embodiment.

[0032] In this way, by using the turning members 36 and 37, the main rope 15 rises together from a position near the turning members 36 and 37, so there is no need to divide the drive sheave 13. A drive sheave 13 can be applied. In addition, since the number of main ropes 15 strung around the turning members 36 and 37 is smaller than that of the second embodiment, the axial dimension of each of the turning members 36 and 37 is smaller than that of the turning member 33 of the second embodiment. The turning members 36 and 37 can be easily arranged inside the upper beam 31.

[0033] Embodiment 4.

Next, FIG. 9 is a plan view showing a rope end connecting device for an elevator apparatus according to Embodiment 4 of the present invention, and FIG. 10 is a cross-sectional view taken along line XX of FIG. In this example, a plurality (the same number as the number of main ropes 15) of cylindrical turning members, that is, first to fourth turning members 4: L44 are fixed to the upper beam 31. The first turning member 41 and the second turning member 42 may be configured as an integral part or as separate parts. Similarly, the third turning member 43 and the fourth turning member 44 may be configured as an integral part or as separate parts.

A corresponding main rope 15 is hung on each turning member 41 1 44. The diameters of the turning members 4 1 1 44 (radius and radius of curvature of the outer peripheral surface) are equal to each other. Further, the first turning member 41 and the second turning member 42 are shifted from each other in the position of the central axis so that the rising position of the main rope 15 is offset. Furthermore, the positions of the central axes of the third turning member 43 and the fourth turning member 44 are also shifted from each other.

[0035] By using such stepped turning members 41 and 44, the main rope 15 can be raised at an appropriate position with respect to the rope groove of the drive sheave 13 located directly above the turning members 41 and 44. Can reduce the fleet angle of the main rope 15 (for example, 2.5 degrees or less) . As a result, it is not necessary to place the drive sheave 13 at a high position just to reduce the fleet angle, and the overhead dimension can be further reduced.

[0036] Embodiment 5.

Next, FIG. 11 is a plan view showing a rope end connecting device for an elevator apparatus according to Embodiment 5 of the present invention, and FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. In this example, a plurality (the same number as the number of main ropes 15) of cylindrical turning members, that is, first to fourth turning members 45 to 48, are fixed to the upper beam 31. The first turning member 45 and the second turning member 46 may be configured as an integral part or as separate parts. Similarly, the third turning member 47 and the fourth turning member 48 may be configured as an integral part or as separate parts.

[0037] A corresponding main rope 15 is hung on each turning member 45-48. 1st and 1st

The diameters of the turning members 45 and 47 (radius and radius of curvature of the outer peripheral surface) are equal to each other. Further, the diameters of the second and fourth turning members 46 and 48 are equal to each other. Further, the diameters of the second and fourth turning members 46 and 48 are smaller than the diameters of the first and third turning members 45 and 47.

[0038] The first turning member 45 and the second turning member 46 are arranged coaxially. Further, the third turning member 47 and the fourth turning member 48 are arranged coaxially.

A corresponding main rope 15 is hung on each turning member 45-48. Further, the first turning member 45 and the second turning member 46 have different diameters so as to offset the rising position of the main rope 15. Further, the third turning member 47 and the fourth turning member 48 also have different diameters.

[0040] By using such a stepped turning member 45-48, the main rope 15 can be raised to an appropriate position with respect to the rope groove of the drive sheave 13 located immediately above the turning member 45-48. This can reduce the fleet angle of the main rope 15 (for example, 2.5 degrees or less). As a result, it is not necessary to place the drive sheave 13 at a high position just to reduce the fleet angle, and the overhead dimension can be further reduced.

[0041] Embodiment 6.

Next, FIG. 13 is a plan view showing a rope end connecting device for an elevator apparatus according to Embodiment 6 of the present invention, and FIG. 14 is a sectional view taken along line XIV-XIV in FIG. In this example, the implementation As in Embodiment 1, a spring (compression spring) 24 is provided between the end of the connecting rod 23 on the side opposite to the main rope 15 and the rod connecting portions 10b, 10c. The turning members 36, 37 are provided on the upper beam 31 so as to be rotatable about horizontal axes 49, 50. The shafts 49 and 50 are arranged in parallel to the depth direction of the car 2 (Fig. 1). The turning members 36 and 37 are provided with bearings (not shown) between the shafts 49 and 50 and the turning members 36 and 37.

[0042] In such a rope end connecting device, the spring 24 expands and contracts as the main rope 15 expands and contracts, and even if the main rope 15 moves, the turning members 36 and 37 rotate. The life of the main rope 15 that is not slid with respect to the turning members 36 and 37 can be increased.

[0043] Embodiment 7.

Next, FIG. 15 is a front view showing a main part of a rope end connecting device for an elevator apparatus according to Embodiment 7 of the present invention. In this example, the connecting rod 23 is inclined and connected to the rod connecting portions 32a and 32b. That is, the winding angle of the main rope 15 with respect to the turning member 36 is different from each other. Although not shown, the winding angle of the main rope 15 around the turning member 37 is also different from each other. Other configurations are the same as those in the sixth embodiment.

[0044] In such a rope end connection device, the car side end portion 15a is pulled out from the turning members 36 and 37 at different angles, so that the connection position of the connection rod 23 to the rod connection portions 32a and 32b is set in the vertical direction. The plurality of connecting rods 23 can be efficiently connected in the narrow rod connecting portions 32a and 32b.

[0045] It should be noted that the turning member may be a curved surface only in a portion where the main rope is hung around, as long as it is not rotatable.

In the above example, the rope end connection device that connects the force, the side end to the force, and the upper beam of the rope is shown, but the rope end connection that connects the counterweight side end to the top of the counterweight. You may apply this invention also to an apparatus.

Furthermore, in the above example, the counterweight is placed behind the car, but the counterweight is positioned so that it faces the side of the car when it is at the same height as the force. You may arrange it in the direction.

Furthermore, in the above example, the driving device is arranged in the upper part of the hoistway. The device may be placed in the machine room above the hoistway.

Claims

The scope of the claims

[1] A main rope body having a cage room and the above-mentioned force and an upper beam provided above the cabin and being lifted and lowered in the hoistway, and a main rope body for suspending the car in the hoistway;

Rope end connection device for connecting the main rope body to the upper beam

With

The rope end connecting device is

A turning member on which the main rope body is hung and turns the end of the main rope body;

A connecting rod disposed inside the upper beam and connected between the end of the main rope body and the upper beam;

Elevator equipment.

[2] The connecting rod is connected to the upper beam via a spring,

2. The elevator apparatus according to claim 1, wherein the turning member is rotatable about a horizontal rotation axis.

[3] The main rope body includes a plurality of main ropes,

3. The elevator apparatus according to claim 2, wherein each of the diverting members includes a plurality of diverting pulleys on which the main rope is hung and can be rotated independently.

[4] The main rope body includes a plurality of main ropes,

The elevator apparatus according to claim 1, wherein the main rope is distributed by the turning member to both sides of the upper beam in the longitudinal direction.

5. The elevator apparatus according to claim 4, wherein the main rope is distributed by changing a winding direction around the turning member.

[6] The main rope body includes a plurality of main ropes,

The elevator apparatus according to claim 1, wherein the turning member is configured to offset a rising position of the main rope.