WO2022107300A1

WO2022107300A1 - Guide rail support structure and elevator

Info

Publication number: WO2022107300A1
Application number: PCT/JP2020/043319
Authority: WO
Inventors: 友康渡辺
Original assignee: 株式会社日立製作所
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2022-05-27
Also published as: EP4249415A1; JP7437532B2; EP4249415A4; CN116419906A; JPWO2022107300A1

Abstract

This guide rail support structure comprises an elastic rail clip and a fixing bracket. The rail clip holds the flange of the guide rail. The fixing bracket has the rail clip fixed thereto and is disposed on the back of the flange. Furthermore, a step for adjusting the amount of deflection of the rail clip is provided between the rail clip and the fixing bracket, or between the fixing bracket and the flange.

Description

Guide rail support structure and elevator

The present invention relates to a support structure for an elevator guide rail and an elevator.

Generally, a guide rail is installed in the hoistway of the elevator to support the car and the balance weight so that they can be moved. The guide rail is supported by a support structure installed in the hoistway of the building structure. The support structure has a rail clip for holding the guide rail and a fixing bracket fixed to the wall surface of the hoistway.

On the other hand, high-rise building structures shrink due to the weight of the building structure itself. When the holding force of the rail clip that holds the guide rail is firmly set, the guide rail is pulled through the rail clip of the support structure due to the shrinkage of the building structure, and compressive stress acts on the guide rail. In order to prevent the guide rail from buckling or bending due to this compressive stress, it is required to adjust the holding force of the rail clip so that the rail clip slides with respect to the guide rail.

As a technique for adjusting the force for holding the guide rail, for example, there is one described in Patent Document 1. Patent Document 1 describes a technique in which a guide rail is held by two or more types of rail clips having different holding forces.

Japanese Unexamined Patent Publication No. 2017-197347

However, in the technique described in Patent Document 1, it is necessary to prepare two or more types of rail clips having different holding powers. Therefore, not only the types of rail clips increase, but also the worker needs to use two or more types of rail clips properly, which makes the installation work of the guide rail very complicated.

In consideration of the above problems, the present object is to provide an elevator guide rail support structure and an elevator that can easily perform guide rail installation work without increasing the types of rail clips used. It is in.

In order to solve the above problems and achieve the purpose, the support structure of the guide rail is provided with an elastic rail clip and a fixing bracket. The rail clip holds the flange portion of the guide rail erected in the hoistway. A rail clip is fixed to the fixing bracket and is arranged on the back surface of the flange portion. A step portion for adjusting the amount of bending of the rail clip is provided between the rail clip and the fixing bracket, or between the fixing bracket and the flange portion.

In addition, the elevator is equipped with a guide rail that is erected in the hoistway and a support structure that supports the guide rail. The above-mentioned support structure is applied as the support structure.

According to the guide rail support structure and elevator having the above configuration, the guide rail installation work can be easily performed without increasing the types of rail clips used.

It is a schematic block diagram which shows the elevator provided with the support structure of the guide rail which concerns on the 1st Embodiment example. It is a top view which shows the elevator provided with the support structure of the guide rail which concerns on the 1st Embodiment example. It is sectional drawing which shows the support structure of the guide rail which concerns on the 1st Embodiment example. It is sectional drawing which shows the support structure of the conventional guide rail. It is a top view which shows the rail bracket in the support structure of the guide rail which concerns on the 1st Embodiment example. It is a front view which shows the rail bracket in the support structure of the guide rail which concerns on the 1st Embodiment example. It is a top view which shows the support structure of the conventional guide rail. It is a front view which shows the support structure of the conventional guide rail. It is sectional drawing which shows the support structure of the guide rail which concerns on the 2nd Embodiment example. It is a top view which shows the rail bracket in the support structure of the guide rail which concerns on the 2nd Embodiment example. It is a front view which shows the rail bracket in the support structure of the guide rail which concerns on the 2nd Embodiment example. It is sectional drawing which shows the support structure of the guide rail which concerns on 3rd Embodiment example. It is a front view which shows the liner in the support structure of the guide rail which concerns on 3rd Embodiment example. It is a front view which shows the fixing plate in the support structure of the guide rail which concerns on 3rd Embodiment example. The rail bracket in the support structure of the guide rail which concerns on 4th Embodiment example is shown, FIG. 15A is a plan view, FIG. 15B is a front view, and FIG. 15C is a side view.

Hereinafter, the guide rail support structure and the elevator according to the embodiment will be described with reference to FIGS. 1 to 15. The common members in each figure are designated by the same reference numerals.

1. 1. First Embodiment 1-1. Elevator Configuration Example First, an elevator provided with a guide rail support structure according to a first embodiment (hereinafter referred to as “this example”) will be described with reference to FIGS. 1 and 2.
FIG. 1 is a schematic configuration diagram showing an elevator. FIG. 2 is a plan view showing an elevator.

As shown in FIG. 1, the elevator 1 of this example is provided in a hoistway 101 formed in a building structure 100. As shown in FIGS. 1 and 2, the elevator 1 moves up and down in the hoistway 101 to carry a car 10 for carrying people and luggage, a hoisting machine 11, a control panel 12, a main rope 13, and a kunpen. It is equipped with a pulley 14 and a balance weight 15. Further, the elevator 1 includes a car-side guide rail 20 that movably supports the car 10 and a weight-side guide rail 30 that movably supports the balance weight 15. A machine room 102 is provided at the top of the hoistway 101.

The hoisting machine 11 is arranged in the machine room 102, and the car 10 is raised and lowered by winding the main rope 13. Further, in the machine room 102, a control panel 12 for controlling the entire elevator 1 is installed.

The main rope 13 is connected to the car 10 and the balance weight 15. Then, the car 10 is connected to the balance weight 15 via the main rope 13. Further, the car 10 is provided with a slider 16 that slides the car side guide rail 20.

When the hoisting machine 11 is driven, the car 10 moves up and down in the hoistway 101 along the car side guide rail 20, and the balance weight 15 moves up and down in the hoistway 101 along the weight side guide rail 30. Operate. The direction in which the car 10 and the balance weight 15 move up and down is defined as the vertical direction. The vertical direction is parallel to the vertical direction.

Further, the car 10 and the balance weight 15 are connected by a compen rope 17. The compen rope 17 is wound around a compen pulley 14 arranged at the bottom of the hoistway 101. The compen pulley 14 is rotatably arranged at the bottom of the hoistway 101.

The car side guide rail 20 is supported by the support structure 50 and is erected in the hoistway 101. Similarly, the weight side guide rail 30 is also supported by the support structure 50 and is erected in the hoistway 101. The support structure 50 is fixed to the wall surface 103 of the hoistway 101, and a plurality of support structures 50 are provided along the vertical direction of the hoistway 101. Since the support structure 50 that supports the car side guide rail 20 and the support structure 50 that supports the weight side guide rail 30 have the same configuration, the support structure 50 that supports the car side guide rail 20 is described below. Will be explained. Hereinafter, the car side guide rail 20 and the weight side guide rail 30 are simply referred to as a guide rail 20.

1-2. Configuration Example of Support Structure Next, the configuration of the support structure 50 will be described with reference to FIGS. 3 to 8.
FIG. 3 is a cross-sectional view showing the support structure 50 of this example, and FIG. 4 is a cross-sectional view showing the conventional support structure 50A.

As shown in FIG. 3, the guide rail 20 has a sliding surface portion 21 on which the slider 16 (see FIG. 1) slides, and a flange portion 22. The flange portion 22 faces the fixing bracket 51 of the support structure 50, which will be described later. The sliding surface portion 21 projects substantially vertically from the flange portion 22.

The support structure 50 has a fixing bracket 51 fixed to the wall surface 103 of the hoistway 101, two

rail clips

52, 52, two fixing

bolts

54, 54, and two fixing

nuts

55, 55. .. The rail clip 52 is made of a member having a predetermined elastic force. The rail clip 52 is fastened and fixed to the fixing bracket 51 via the fixing bolt 54 and the fixing nut 55. Then, the rail clip 52 holds both ends of the flange portion 22 of the guide rail 20.

FIG. 5 is a plan view showing the fixing bracket 51, and FIG. 6 is a front view showing the fixing bracket 51.
As shown in FIGS. 5 and 6, the fixing bracket 51 is formed in a substantially L shape. The fixed bracket 51 has a fixed surface portion 51a, a facing surface portion 51b, and a stepped portion 53. The fixing surface portion 51a is fixed to the fixing portion protruding from the wall surface 103 of the hoistway 101 by welding or fastening and fixing with fixing bolts. The facing surface portion 51b is substantially vertically continuous from one end of the fixed surface portion 51a in the lateral direction.

The facing surface portion 51b is formed in a substantially flat plate shape forming a substantially rectangular shape. Fixing holes 51c are formed at both ends of the facing surface portion 51b in the longitudinal direction. A fixing bolt 54 for fixing the rail clip 52 is inserted into the fixing hole 51c.

Further, the facing surface portion 51b is arranged so as to face the back surface on the side opposite to the one surface on which the sliding surface portion 21 of the flange portion 22 projects. A step portion 53 is formed on the facing surface portion 51b. The step portion 53 is formed between the two fixing

holes

51c and 51c. The step portion 53 projects from one surface of the facing surface portion 51b facing the flange portion 22 of the guide rail 20 toward the flange portion 22. The step portion 53 is a substantially rectangular convex portion having a flat surface. The step portion 53 is interposed between the flange portion 22 of the guide rail 20 and the facing surface portion 51b, and comes into surface contact with the back surface of the flange portion 22.

4, 7, and 8 show the conventional support structure 50A.
As shown in FIG. 4, the conventional support structure 50A has a fixing bracket 51A, two

rail clips

52, 52, two fixing

bolts

54, 54, and two fixing

nuts

55, 55. Since the rail clip 52, the fixing bolt 54, and the fixing nut 55 are the same as the support structure 50 of this example shown in FIG. 3, the description thereof will be omitted.

As shown in FIGS. 7 and 8, the fixing bracket 51A is formed in a substantially L shape, and has a fixed surface portion 51a and a facing surface portion 51b. The facing surface portion 51b is substantially vertically continuous from one end of the fixed surface portion 51a. Two fixing holes 51c into which the fixing bolts 54 are inserted are formed in the facing surface portion 51b. In this conventional support structure 50A, the back surface of the flange portion 22 of the guide rail 20 comes into surface contact with the facing surface portion 51b of the fixed bracket 51A.

Comparing the conventional support structure 50A and the support structure 50 of this example, in the support structure 50 of this example, the guide rail 20 has the conventional support structure 50A shown in FIG. 4 due to the stepped portion 53 provided on the fixing bracket 51. It is arranged in a direction away from the facing surface portion 51b. Therefore, the rail clip 52 of the support structure 50 of this example bends more than the rail clip 52 of the conventional support structure 50A. As a result, according to the support structure 50 of this example, the holding force of the guide rail 20 by the rail clip 52 can be increased as compared with the conventional support structure 50A.

When designing the elevator 1, the height of the step portion 53 is designed in advance so that the holding force of the rail clip 52 is the optimum holding force required. As a result, only one type of rail clip 52 is used when installing the elevator 1. As a result, the installation work of the guide rail 20 can be easily performed, and the workability can be improved.

Further, the same type of rail clip 52 can be used for an elevator installed in a different building structure 100 having the same type of guide rail 20. In this way, the rail clip 52 can be shared, and the design of the rail clip 52 becomes unnecessary for each elevator.

It should be noted that it is not necessary for all of the plurality of support structures to be the support structure 50 provided with the stepped portion 53 shown in FIG. For example, the support structure 50 of this example shown in FIG. 3 may be applied to some of the support structures among the plurality of support structures, and the remaining support structures may be the conventional support structure 50A shown in FIG. Of the plurality of support structures, the number to which the support structure 50 of this example is applied is appropriately set according to the weight of the guide rail 20.

2. 2. Example of Second Embodiment Next, the support structure of the guide rail according to the second embodiment will be described with reference to FIGS. 9 to 11.
9 is a cross-sectional view showing the support structure, FIG. 10 is a plan view showing the fixing bracket in the support structure, and FIG. 11 is a front view showing the fixing bracket in the support structure.

The difference between the support structure 50B according to the second embodiment and the support structure 50 according to the first embodiment is the configuration of the fixing bracket. Therefore, the fixing bracket will be described here, and the same reference numerals are given to the portions common to the support structure 50 according to the first embodiment, and duplicate description will be omitted.

As shown in FIG. 9, the support structure 50B has a fixing bracket 51B, two

rail clips

52, 52, two fixing

bolts

54, 54, and two fixing

nuts

55, 55. As shown in FIGS. 10 and 11, the fixed bracket 51B has a fixed surface portion 51a, a facing surface portion 51b, and two stepped

portions

57 and 57. Two fixing holes 51c are formed in the facing surface portion 51b.

The step portion 57 is provided at a position where the rail clip 52 is attached on one surface of the facing surface portion 51b facing the guide rail 20. The step portion 57 is a convex portion that projects in a substantially rectangular shape from one surface of the facing surface portion 51b toward the rail clip 52.

Two fixing

holes

51c and 51c are formed in the facing surface portion 51b. The fixing hole 51c is formed in a portion of the facing surface portion 51b where the step portion 57 is provided, and penetrates the step portion 57 and the facing surface portion 51b. A fixing bolt 54 is inserted into the fixing hole 51c. When the rail clip 52 is attached to the fixed bracket 51B, the step portion 57 is interposed between the rail clip 52 and the facing surface portion 51b and comes into contact with the rail clip 52. Further, the back surface of the flange portion 22 of the guide rail 20 comes into contact with the facing surface portion 51b.

According to the support structure 50B according to the second embodiment, as shown in FIG. 9, the step portion 57 is interposed between the rail clip 52 and the facing surface portion 51b, so that the conventional support shown in FIG. 4 is provided. The amount of bending of the rail clip 52 can be made smaller than that of the structure 50A. As a result, according to the support structure 50B according to the second embodiment, the holding force of the guide rail 20 by the rail clip 52 can be reduced as compared with the conventional support structure 50A.

Since other configurations are the same as those of the support structure 50 according to the first embodiment, the description thereof will be omitted. The support structure 50B according to the second embodiment can also have the same effect as the support structure 50 according to the first embodiment described above.

By selecting in advance the fixing bracket 51 according to the first embodiment or the fixing bracket 51B according to the second embodiment, the amount of bending of the rail clip 52 can be adjusted for each elevator. As a result, the holding force of the rail clip 52 can be made the optimum holding force, and it is possible to prevent the types of rail clips 52 used from increasing.

3. 3. Example of Third Embodiment Next, the support structure of the guide rail according to the third embodiment will be described with reference to FIGS. 12 to 14.
12 is a cross-sectional view showing a support structure, FIG. 13 is a front view showing a liner in the support structure, and FIG. 14 is a front view showing a fixed plate in the support structure.

The support structure 60 according to the third embodiment is different from the support structure 50 according to the first embodiment in that a liner and a fixing plate are provided. Therefore, the parts common to the support structure 50 and the conventional support structure 50A according to the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIG. 12, the support structure 60 has a fixing bracket 51A, two

rail clips

52, 52, and two fixing

bolts

54, 54. Since the configuration of the fixing bracket 51A is the same as that of the fixing bracket 51A of the conventional support structure 50A shown in FIG. 4, the description thereof will be omitted. Further, the support structure 60 has a liner 61 and a fixing plate 64.

The liner 61 is interposed between the facing surface portion 51b of the fixing bracket 51A, the flange portion 22 of the guide rail 20, and the rail clip 52. As shown in FIG. 13, the liner 61 is formed in a rectangular flat plate shape.

Insertion ports

61a and 61a are formed at both ends of the liner 61 in the longitudinal direction. The insertion port 61a is a continuous notch from one end of the liner 61 in the lateral direction to the center. When the liner 61 is arranged on the facing surface portion 51b, the fixing bolt 54 is inserted into the insertion port 61a.

Further, the liner 61 is provided with a step portion 63. The step portion 63 is formed between the two

insertion ports

61a and 61a. The step portion 63 projects from one surface of the liner 61 facing the flange portion 22 of the guide rail 20 toward the flange portion 22. The step portion 63 is a substantially rectangular convex portion. The step portion 63 is interposed between the flange portion 22 of the guide rail 20 and the facing surface portion 51b, and comes into contact with the back surface of the flange portion 22.

By inserting the liner 61 between the guide rail 20 and the fixed bracket 51A, the guide rail 20 can be separated from the facing surface portion 51b of the fixed bracket 51A, and the amount of bending of the rail clip 52 can be increased.

The fixing plate 64 is arranged on the surface of the facing surface portion 51b opposite to the one facing the guide rail 20. As shown in FIG. 14, the fixing plate 64 is formed in a substantially flat plate shape, and is formed longer than the distance between the two fixing

bolts

54, 54 attached to the fixing bracket 51A. Nuts 65 are fixed by welding to both ends of the fixing plate 64 in the longitudinal direction. This eliminates the need to manually support the nut 65 when tightening the fixing bolt 54, which improves workability.

The fixing plate 64 may also be applied to the support structure 50 according to the first embodiment described above and the support structure 50B according to the second embodiment.

Since other configurations are the same as those of the support structure 50 according to the first embodiment, the description thereof will be omitted. The support structure 60 according to the third embodiment can also have the same effect as the support structure 50 according to the first embodiment described above.

According to the support structure 60 according to the third embodiment, the liner 61 is sandwiched between the guide rail 20 and the fixed bracket 51A without processing the fixed bracket 51A, the guide rail 20, or the like, thereby causing a step. The part can be formed. As a result, the amount of bending of the rail clip 52 can be adjusted with respect to the existing guide rail support structure, and the holding force of the rail clip 52 can be easily adjusted to the optimum holding force.

4. Example of Fourth Embodiment Next, the support structure of the guide rail according to the fourth embodiment will be described with reference to FIGS. 15A to 15C.
15A is a plan view showing a fixing bracket in the support structure, FIG. 15B is a front view, and FIG. 15C is a side view.

The difference between the support structure according to the fourth embodiment and the support structure 50 according to the first embodiment is the structure of the stepped portion of the fixed bracket. Therefore, here, the fixing bracket will be described, and the same reference numerals will be given to the portions common to the support structure 50 according to the first embodiment, and duplicate description will be omitted.

As shown in FIGS. 15A to 15C, the fixing bracket 51C has a fixed surface portion 51a and a facing surface portion 51b. A stepped portion 53 and two fixing holes 51c are formed in the facing surface portion 51b. Further, chamfering 53a is provided on the upper end side and the lower end side corner portion of the step portion 53 in the vertical direction. As a result, when the flange portion 22 and the step portion 53 slide due to the shrinkage of the building structure 100, the step portion 53 and the flange portion 22 are solidified due to a minute step formed on the back surface of the flange portion 22 or a paint pool. You can prevent it from being astringent.

It should be noted that chamfering the corners of the stepped portion 53 is performed by chamfering the stepped portion 57 of the fixing bracket 51B according to the second embodiment described above and the stepped portion 63 of the liner 61 according to the third embodiment. It may also be applied to.

Since other configurations are the same as those of the support structure 50 according to the first embodiment, the description thereof will be omitted. The support structure having the fixing bracket 51C according to the fourth embodiment can also have the same effect as the support structure 50 according to the first embodiment described above.

The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the gist of the invention described in the claims.

In the above-described embodiment, the example in which the step portion is provided on the rail bracket side has been described, but the present invention is not limited to this, and the step portion is provided on the surface of the flange portion 22 of the guide rail 20 facing the fixed bracket. May be. Further, although the example in which the stepped portion is a convex portion has been described, the stepped portion may be a concave portion recessed from the facing surface portion of the fixing bracket or one surface of the liner.

Further, in the above-described embodiment, the example in which the stepped portion is a convex portion having a flat surface in surface contact with the flange portion 22 of the guide rail 20 and the rail clip 52 has been described, but the present invention is not limited to this. As the shape of the step portion, for example, it may be formed into various shapes such as protrusions and ridges.

Although words such as "parallel" and "orthogonal" are used in the present specification, these do not mean only strict "parallel" and "orthogonal", but include "parallel" and "orthogonal". Further, it may be in a "substantially parallel" or "substantially orthogonal" state within a range in which the function can be exhibited.

1 ... Elevator, 10 ... Riding car, 11 ... Hoisting machine, 13 ... Main rope, 15 ... Balance weight, 16 ... Slider, 20 ... Car side guide rail, 21 ... Sliding surface part, 22 ... Flange part, 25 ... Reinforcing member, 30 ... Weight side guide rail, 50, 50A, 50B ... Support structure, 51, 51A, 51B, 51C, 60 ... Fixed bracket, 51a ... Fixed surface part, 51b ... Facing surface part, 51c ... Fixed hole, 52 ... Rail Clips, 53, 57, 63 ... steps, 53a ... chamfers, 54 ... fixing bolts, 55 ... fixing nuts, 61 ... liners, 61a ... insertion holes, 64 ... fixing plates, 65 ... nuts, 100 ... building structures, 101 ... hoistway, 103 ... wall surface

Claims

An elastic rail clip that holds the flange of the guide rail erected in the hoistway,
A fixing bracket to which the rail clip is fixed and arranged on the back surface of the flange portion is provided.
A guide rail support structure in which a step portion for adjusting the amount of bending of the rail clip is provided between the rail clip and the fixing bracket, or between the fixing bracket and the flange portion.
The guide rail support structure according to claim 1, wherein the step portion is a convex portion of the fixing bracket that projects from a facing surface portion facing the back surface of the flange portion toward the guide rail.
The guide rail support structure according to claim 2, wherein the step portion is in contact with the back surface of the flange portion.
The step portion is formed at a position on the facing surface portion where the rail clip is fixed, and comes into contact with the rail clip.
The guide rail support structure according to claim 2, wherein the back surface of the flange portion is in contact with the facing surface portion.
A liner interposed between the fixing bracket and the guide rail is provided.
The guide rail support structure according to claim 1, wherein the step portion is a convex portion formed on the liner.
The rail clip is fixed to the fixing bracket by a fixing bolt.
The guide rail support structure according to claim 5, wherein the liner is formed with a notch into which the fixing bolt can be inserted.
The guide rail support structure according to claim 2 or 5, wherein the corner portion of the step portion is chamfered.
Guide rails erected in the hoistway and
With a support structure for supporting the guide rail,
The support structure is
An elastic rail clip that holds the flange of the guide rail,
A fixing bracket to which the rail clip is fixed and arranged on the back surface of the flange portion is provided.
An elevator provided with a step portion for adjusting the amount of bending of the rail clip between the rail clip and the fixing bracket, or between the fixing bracket and the flange portion.