JP2005231902A - Rope supporting device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rope supporting device of an elevator capable of reducing bending moment acting on a guide rail. <P>SOLUTION: A columnlike body 33 is attached to the guide rail 31 through first and second fulcrum bodies 41, 42 provided in its both upper and lower end parts. A rope end fixing member 37 is fixed to the columnlike body 33 by welding. End parts of a plurality of ropes 16 are fixed to the rope end fixing member 37 through fastening devices 19, respectively. The first fulcrum body 41 transmits only load in the vertical direction to an axis C of the guide rail 31 to the guide rail 31. The second fulcrum body 42 transmits only load in the parallel direction to the axis C of the guide rail 31 to the guide rail 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator rope support device for supporting a rope for suspending a car or a counterweight in a hoistway in the hoistway.

  FIG. 10 is a block diagram showing an example of a conventional elevator. In the figure, the hoistway 1 is constructed by a steel structure 2. A machine room 3 is constructed adjacent to the bottom of the hoistway 1. The ropes 6 and 7 are attached to the beams 4 and 5 located at the upper part of the steel structure 2. On the ropes 6 and 7, rotatable return wheels 8 and 9 are provided.

  A hoisting machine 10 having a sheave 11 is installed in the machine room 3. Further, in the machine room 3, rotatable deflecting wheels 12, 13 are provided. A rope 16 for suspending the car 14 and the counterweight 15 in the hoistway 1 is wound around the sheave 11 and turned by the return wheels 8 and 9 through the deflectors 12 and 13. A lower side of the suspension wheels 17 and 18 provided on the weight 15 is passed. Both ends of the rope 16 are fixed to the ropes 6 and 7 via fasteners 19, respectively.

  In such an elevator, the sheave 11 is rotated in the forward and reverse directions by the driving force of the hoisting machine 10, whereby the car 14 and the counterweight 15 are alternately raised and lowered in the hoistway 1.

  In the example of FIG. 10, the hoistway 1 is constructed by the steel structure 2, but when the hoistway is made of concrete, the recesses or projections for supporting both ends of the clasp beam are hoistways. Provided on the wall. Then, both end portions of the ropes are fixed to the shoulder portions of the concave portion or the convex portion.

  However, in the conventional elevator as described above, it is necessary to provide the beams 4 and 5 for supporting the ropes 6 and 7 or the uneven portion, and particularly in the case of a concrete structure, It was necessary to make a meeting with an elevator dealer and perform additional work to provide an uneven portion on the hoistway wall. For this reason, the construction period becomes longer and the construction cost becomes higher.

  On the other hand, for example, Japanese Society of Invention Disclosure Technique 90-9351 shows a rope end fixing device in which a member to which an end portion of a rope is fixed is attached to a guide rail that guides raising and lowering of a car or a counterweight. Yes.

  FIG. 11 is a front view showing an example of a conventional rope end fixing device. In the figure, a guide rail 21 that guides raising and lowering of a car or a counterweight is fixed in a hoistway via a plurality of rail brackets 22. A rope end fixing member 24 is fixed to the guide rail 21 via a plurality of fulcrum bodies 23 having bolts and nuts, for example. End portions of the plurality of ropes 16 are fixed to the rope end fixing member 24 via fasteners 19, respectively.

  As described above, in the rope end fixing device having the fulcrum body 23 and the rope end fixing member 24, the tension T acting on the end of the rope 16 is eccentric with respect to the central axis C of the cross section of the guide rail 21. A bending moment acts on 21. For this reason, it is necessary to increase the cross-sectional area of the guide rail 21 or to reduce the interval between the rail brackets 22 to prevent the deformation of the guide rail 21 due to the bending moment, which increases the manufacturing cost and the installation cost. .

  An object of the present invention is to provide an elevator rope support device that can reduce the bending moment acting on the guide rail.

  An elevator rope support device according to the present invention extends along a guide rail installed in a hoistway, is a columnar body attached to the guide rail, is fixed to the columnar body, and is at least one of a car and a counterweight. A rope support member that supports the rope that suspends one of them in the hoistway, and is provided between the columnar body and the guide rail, and arranged at a distance from each other to transmit the load from the columnar body to the guide rail. The fulcrum body includes a first fulcrum body that transmits only a load in a direction perpendicular to the central axis of the guide rail to the guide rail, and a load in a direction parallel to the central axis of the guide rail. A second fulcrum body to be transmitted to the guide rail.

  The rope support device for an elevator according to the present invention can reduce the bending moment acting on the guide rail. Further, the position where the maximum bending moment acts and the position where the compressive load acts are shifted, and the combined stress generated in the guide rail due to the bending moment and the compressive load can be reduced.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a front view showing an elevator rope support device according to Embodiment 1 of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a right side view showing the main part of the device in FIG. is there.

  In the figure, a guide rail 31 for guiding the raising and lowering of a car (not shown) or a counterweight (not shown) is fixed in the hoistway via a plurality of rail brackets 32. A columnar body 33 having a C-shaped cross section extending along the guide rail 31 is attached to the guide rail 31 via a plurality of fulcrum bodies 34 provided at both upper and lower ends thereof. The fulcrum body 34 includes a bolt 35 that passes through the guide rail 31 and the columnar body 33, and a nut 36 that is screwed to the bolt 35.

A rope end fixing member 37 having a C-shaped cross section as a rope support member extending in a direction perpendicular to the columnar body 33 is fixed to the columnar body 33 by welding or the like. End portions of the plurality of ropes 16 are fixed to the rope end fixing member 37 via fasteners 19, respectively.
The columnar body 33 has a bending strength higher than that of the guide rail.

  In such a rope support device, since the acting center of the tension acting on the rope 16 does not coincide with the central axis C of the guide rail 31, the bending moment due to the eccentric load is applied to the columnar body 33 via the rope end fixing member 37. Works. This bending moment is transmitted to the guide rail 31 via the fulcrum body 34. However, since the fulcrum bodies 34 at the upper and lower ends of the columnar body 33 are arranged at a sufficient distance from each other, they are generated in the fulcrum body 34. The fulcrum reaction force, which is a load in the direction perpendicular to the rail central axis C (the left-right direction in FIG. 1), is reduced, and the bending moment applied to the guide rail 31 due to the fulcrum reaction force acting on the guide rail 31 is columnar 33. It becomes smaller than the bending moment acting on.

  The bending moment acting on the columnar body 33 is equivalent to the bending moment acting on the guide rail 21 in the conventional apparatus shown in FIG. 11, but the bending strength of the columnar body 33 is higher than the bending strength of the guide rail 31 alone. By increasing the height, it is possible to secure a sufficient strength as a rope support device. Therefore, it is not necessary to increase the size of the guide rail 21, and the interval between the rail brackets 32 can be increased. Furthermore, the tension acting on the end of the rope can be increased.

Moreover, since the fulcrum body 34 which penetrates the guide rail 31 and the columnar body 33 is used, the columnar body 33 can be easily attached to the guide rail 31, and the manufacturing cost can be reduced and the installation time can be shortened. it can.
Further, by arranging the fulcrum body 34 in the vicinity of the rail bracket 32, it is possible to prevent the guide rail 31 from being bent due to the load from the fulcrum body 34.

Embodiment 2. FIG.
Next, FIG. 4 is a front view showing an elevator rope support device according to Embodiment 2 of the present invention. In the figure, the guide rail 31 has a plurality of first elongated holes 31a extending along a direction parallel to the central axis C, and a plurality of second elongated holes 31b extending along a direction perpendicular to the central axis C. Is provided.

  A plurality of first fulcrum bodies 41 that attach the columnar body 33 to the guide rail 31 through the first elongated hole 31 a are provided at both upper and lower ends of the columnar body 33. These first fulcrum bodies 41 transmit only the load in the direction perpendicular to the central axis C of the guide rail 31 to the guide rail 31.

  A plurality of second fulcrum bodies 42 that attach the columnar body 33 to the guide rail 31 through the second elongated hole 31 b are provided at the lower end of the columnar body 33. These second fulcrum bodies 42 transmit only a load in a direction parallel to the central axis C of the guide rail 31 to the guide rail 31. Other configurations are the same as those in the first embodiment.

  In such a rope support device, since the first fulcrum bodies 41 at the upper and lower ends of the columnar body 33 are arranged at a sufficient distance from each other, the fulcrum reaction force generated in the first fulcrum body 41 is small. Thus, when the fulcrum reaction force acts on the guide rail 31, the bending moment applied to the guide rail 31 is reduced. Further, since the second fulcrum body 42 supports only the load in the direction parallel to the central axis C, the fulcrum reaction force that supports the bending moment is generated only in the first fulcrum body 41. For this reason, the bending moment acting on the guide rail 31 is maximized at the position of the first fulcrum body 41. On the other hand, the compressive load acts on a portion below the second fulcrum body 42 of the guide rail 31.

  Therefore, in the guide rail 31, the position where the maximum bending moment acts and the position where the compressive load acts are shifted, and the combined stress generated in the guide rail 31 due to the bending moment and the compressive load can be reduced. Thereby, the size of the guide rail 31 can be reduced, and the arrangement interval of the rail brackets 32 can be increased. Moreover, the tension | tensile_strength which acts on a rope end can be taken large.

Embodiment 3 FIG.
Next, FIG. 5 is a front view showing an elevator rope support apparatus according to Embodiment 3 of the present invention. In the figure, guide rails 31 </ b> A and 31 </ b> B adjacent to each other in the vertical direction are connected and fixed to each other by a rail connection body 43. The rail connection body 43 is fixed to the lower end portion of the guide rail 31A and the upper end portion of the guide rail 31B by a plurality of bolts 44. The lower end portion of the columnar body 33 is in contact with the upper end portion of the rail connection body 43.

  Further, the columnar body 33 is attached to the guide rail 31 by a plurality of fulcrum bodies 45 disposed at both upper and lower ends thereof. The fulcrum body 45 includes a rail clip 46 that holds the guide rail 31 between the columnar body 33 and a bolt 47 that tightens the rail clip 46. Further, the fulcrum body 45 transmits only the load in the direction perpendicular to the central axis C of the guide rail 31 to the guide rail 31. Other configurations are the same as those in the first embodiment.

  In such a rope support device, since the fulcrum bodies 45 at the upper and lower ends of the columnar body 33 are arranged at a sufficient distance from each other, the fulcrum reaction force generated in the fulcrum body 45 is reduced, and the fulcrum reaction force is reduced. By acting on the guide rail 31, the bending moment applied to the guide rail 31 is reduced. Further, since the load in the direction parallel to the central axis C acting on the guide rail 31 from the columnar body 33 is supported by the rail connecting body 43, the load in the direction parallel to the central axis C is transmitted to the guide rail 31. No fulcrum body is required. Further, since the fulcrum body 45 having the rail clip 46 is used, it is not necessary to provide a hole in the guide rail 31, the processing time of the guide rail 31 can be shortened, and the bending strength of the guide rail 31 can be increased.

  Furthermore, since the position where the maximum bending moment acts on the guide rail 31 is shifted from the position where the compressive load acts, the combined stress generated in the guide rail 31 due to the bending moment and the compressive load can be reduced. Therefore, the size of the guide rail 31 can be reduced, and the arrangement interval of the rail brackets 32 can be increased. Moreover, the tension | tensile_strength which acts on a rope end can be taken large.

Embodiment 4 FIG.
Next, FIG. 6 is a front view showing an elevator rope support device according to Embodiment 4 of the present invention, and FIG. 7 is a sectional view taken along line VII-VII in FIG. In the figure, a support member 51 that supports only a load in a direction parallel to the central axis C from the columnar body 33 is fixed to the guide rail 31 by a plurality of bolts 52. The lower end portion of the columnar body 33 is in contact with the upper end portion of the support member 51.

  The columnar body 33 is attached to the guide rail 31 by a plurality of rail clips 53. A plurality of fulcrum members 54 serving as fulcrum bodies that are in contact with both side portions of the guide rail 31 are fixed to both upper and lower ends of the columnar body 33. The fulcrum member 54 transmits only a load in a direction perpendicular to the central axis C from the columnar body 33 to the guide rail 31. Further, in this example, it is the fulcrum member 54 that transmits the load in the direction perpendicular to the central axis C to the guide rail 31, and the rail clip 53 is such that the columnar body 33 comes off the guide rail 31 upward in FIG. 7. Is blocking. Other configurations are the same as those in the first embodiment.

  In such a rope support device, since the fulcrum members 54 at the upper and lower ends of the columnar body 33 are arranged at a sufficient distance from each other, the fulcrum reaction force generated in the fulcrum member 54 is reduced, and the fulcrum reaction force is reduced. By acting on the guide rail 31, the bending moment applied to the guide rail 31 is reduced. Further, even when the rail connection body 43 as shown in the third embodiment is not in the vicinity of the columnar body 33, a load in the direction parallel to the central axis C acting on the guide rail 31 from the columnar body 33 is supported by the support member. 53. Further, in addition to the rail clip 53 for attaching the columnar body 33 to the guide rail 31, only a load in a direction parallel to the central axis C is transmitted to the guide rail 31, so that the cross-sectional area and shape can be freely designed. Since the member 54 is fixed to the columnar body 33, the strength of the fulcrum member 54 can be sufficiently secured.

  Moreover, it is not necessary to provide a hole in the guide rail 31, so that the processing time of the guide rail 31 can be shortened and the bending strength of the guide rail 31 can be increased. Furthermore, since the position where the maximum bending moment acts and the position where the compressive load acts on the guide rail 31 are shifted, the combined stress generated in the guide rail 31 due to the bending moment and the compressive load can be reduced. Therefore, the size of the guide rail 31 can be reduced, and the arrangement interval of the rail brackets 32 can be increased. Moreover, the tension | tensile_strength which acts on a rope end can be taken large.

Embodiment 5 FIG.
Next, FIG. 8 is a front view showing an elevator rope support apparatus according to Embodiment 5 of the present invention. In the above embodiment, the rope end fixing member 37 to which the end portion of the rope 16 is fixed is shown as the rope support member. However, in this fifth embodiment, the return wheel support member 55 is attached to the columnar body 33 as the rope support member. It is fixed. A return wheel 56 is attached to the return wheel support member 55, and the rope 16 is wound around the return wheel 56.

  Even with such an apparatus, as in the above embodiments, the bending moment acting on the guide rail 31 due to the tension of the rope 16 is reduced, the size of the guide rail 31 is reduced, and the distance between the rail brackets 32 is increased. Can be bigger.

Embodiment 6 FIG.
2 shows an example in which the rope end fixing member 37 is attached to the opposite side (back side) of the guide rail attachment surface of the columnar body 33, but the rope end fixing member 37 may be attached to the side surface of the columnar body 33 as shown in FIG. Good. Moreover, in the said embodiment, although the rope end fixing member 37 was attached to the upper part of the columnar body 33, you may attach to the center part and lower part of the height direction of the columnar body 33. FIG.

Moreover, in the said embodiment, although the cross-sectional shape of the columnar body 33 was made into substantially C shape, it is not limited to this, For example, it is good also as a cylinder shape. Moreover, although it is possible to make it a solid columnar shape, it is preferable to make it hollow in terms of weight reduction.
Furthermore, in the above-described embodiment, the rope end fixing member 37 is fixed to the columnar body 33 by welding. However, the rope end fixing member 37 may be fixed by a bolt or the like. May be provided integrally.

Furthermore, the fulcrum body 45 of FIG. 5 and the fulcrum member 54 of FIG. 6 may be used instead of the first fulcrum body 41 of the second embodiment shown in FIG.
Moreover, it is also possible to mount an elevator end point switch or a governor mounting arm on the rope support device as described above.

Furthermore, in the above embodiment, the columnar body 33 is attached to the guide rail 31 having a T-shaped cross section, but the type of the guide rail is not limited to this, for example, a guide rail formed by bending a steel plate. Also good.
Furthermore, although the fulcrum body 34 having a bolt is used in the first embodiment, for example, a columnar body may be welded to the guide rail and the welded portion may be used as the fulcrum body.
In the fourth embodiment, the support member 51 is fixed to the guide rail 31 by the bolt 52, but may be fixed by welding.

It is a front view which shows the rope support apparatus of the elevator by Embodiment 1 of this invention. It is the II-II sectional view taken on the line of FIG. It is a right view which shows the principal part of the apparatus of FIG. It is a front view which shows the rope support apparatus of the elevator by Embodiment 2 of this invention. It is a front view which shows the rope support apparatus of the elevator by Embodiment 3 of this invention. It is a front view which shows the rope support apparatus of the elevator by Embodiment 4 of this invention. It is the VII-VII sectional view taken on the line of FIG. It is a front view which shows the rope support apparatus of the elevator by Embodiment 5 of this invention. It is sectional drawing of the rope support apparatus of the elevator by Embodiment 6 of this invention. It is a block diagram which shows an example of the conventional elevator. It is a front view which shows an example of the conventional rope end fixing apparatus of an elevator.

Explanation of symbols

  16 ropes, 31 guide rails, 33 columnar bodies, 37 rope end fixing members (rope support members), 41 first fulcrum bodies, 42 second fulcrum bodies, 46, 53 rail clips, 54 fulcrum members.

Claims (3)

A columnar body extending along the guide rail installed in the hoistway and attached to the guide rail,
A rope support member that is fixed to the columnar body and supports a rope that suspends at least one of the car and the counterweight in the hoistway; and is provided between the columnar body and the guide rail, A plurality of fulcrum bodies arranged at a distance from each other for transmitting a load from the columnar body to the guide rail;
The fulcrum body transmits only a load in a direction perpendicular to the central axis of the guide rail to the guide rail, and transmits only a load in a direction parallel to the central axis of the guide rail to the guide rail. The elevator rope support apparatus which has a 2nd fulcrum body.   The elevator rope support device according to claim 1, wherein the first fulcrum body includes a rail clip that sandwiches the guide rail between the first fulcrum body and the columnar body.   The elevator rope support device according to claim 1, wherein the first fulcrum body includes a fulcrum member fixed to the columnar body so as to be in contact with both side portions of the guide rail.

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