CN116419906A - Supporting structure of guide rail and elevator - Google Patents

Abstract

The support structure of the guide rail comprises a rail clip having elasticity and a fixing bracket. The rail clip holds the rail bottom of the guide rail. The fixing bracket is arranged on the back of the rail bottom, and the rail clamp is fixed on the fixing bracket. A step portion for adjusting the deflection amount of the rail clip is provided between the rail clip and the fixing bracket or between the fixing bracket and the rail bottom.

Description

Supporting structure of guide rail and elevator

Technical Field

The present invention relates to a supporting structure for guide rails of an elevator and an elevator.

Background

Generally, a guide rail for supporting a car and a counterweight is provided in a hoistway of an elevator so that the car and the counterweight can move. The guide rail is supported by a support structure provided in a hoistway of the building structure. The support structure has rail clips (rail clips) for holding the rails, and fixing brackets fixed to the wall surfaces of the hoistway.

On the other hand, a high-rise building structure is contracted by the weight of the building structure itself. When the holding force of the rail frame holding the rail is firmly set, the rail is pulled by the contraction of the building structure via the rail clip of the support structure, and compressive stress acts on the rail. In order to prevent buckling or bending from occurring in the guide rail due to the compressive stress, it is required to adjust the holding force of the rail clip so as to slide the rail clip with respect to the guide rail.

As a technique for adjusting the force of the holding rail, for example, a method described in patent document 1 is known. Patent document 1 describes a technique in which a rail is held by 2 or more rail clips having different holding forces.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open publication No. 2017-197347

Disclosure of Invention

Technical problem to be solved by the invention

However, in the technique described in patent document 1, it is necessary to prepare 2 or more kinds of rail clips having different holding forces. Therefore, not only the kinds of rail clips are increased, but also an operator needs to use more than 2 kinds of rail clips separately, and the installation operation of the guide rail is very complicated.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a guide rail supporting structure for an elevator and an elevator capable of easily installing guide rails without increasing the types of rail clips used.

Technical means for solving the technical problems

In order to solve the above technical problems and achieve the object, the supporting structure of the guide rail includes a rail clip having elasticity and a fixing bracket (bracket). The rail clip holds a rail bottom (flange) portion of a guide rail provided upright in a hoistway (elevator shaft). The rail clip is fixed to the fixing bracket and is disposed on the back surface of the rail bottom. A step portion for adjusting the deflection amount of the rail clip is provided between the rail clip and the fixing bracket or between the fixing bracket and the rail bottom.

In addition, the elevator includes a guide rail disposed upright within the hoistway, and a support structure supporting the guide rail. The support structure can be applied as a support structure.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the guide rail supporting structure and the elevator with the above structure, the guide rail installation operation can be easily performed without increasing the kinds of the rail clips used.

Drawings

Fig. 1 is a schematic configuration diagram of an elevator in which a supporting structure of a guide rail according to an example of the first embodiment is provided.

Fig. 2 is a plan view showing an elevator in which a supporting structure of a guide rail of an example of the first embodiment is provided.

Fig. 3 is a cross-sectional view showing a supporting structure of a rail of an example of the first embodiment.

Fig. 4 is a sectional view showing a supporting structure of a conventional rail.

Fig. 5 is a plan view showing a rail bracket in a supporting structure of a rail of an example of the first embodiment.

Fig. 6 is a front view showing a rail bracket in a supporting structure of a rail of an example of the first embodiment.

Fig. 7 is a plan view showing a conventional rail support structure.

Fig. 8 is a front view showing a supporting structure of a conventional rail.

Fig. 9 is a cross-sectional view showing a supporting structure of a rail of an example of the second embodiment.

Fig. 10 is a plan view showing a rail bracket in a support structure of a rail of an example of the second embodiment.

Fig. 11 is a front view showing a rail bracket in a supporting structure of a rail of an example of the second embodiment.

Fig. 12 is a cross-sectional view showing a support structure of a rail according to an example of the third embodiment.

Fig. 13 is a front view showing a lining plate (liner) in a support structure of a rail of an example of the third embodiment.

Fig. 14 is a front view showing a fixing plate in a supporting structure of a guide rail of an example of the third embodiment.

Fig. 15 shows a rail bracket in a supporting structure of a rail of an example of the fourth embodiment, fig. 15A is a top view, fig. 15B is a front view, and fig. 15C is a side view.

Detailed Description

Hereinafter, a supporting structure of a guide rail and an elevator according to an example of embodiment will be described with reference to fig. 1 to 15. In the drawings, common members are given the same reference numerals.

1. Examples of the first embodiment

1-1 structural example of an Elevator

First, an elevator provided with a support structure of a guide rail of an example of the first embodiment (hereinafter referred to as "this example") will be described with reference to fig. 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, an elevator 1 of the present example is provided in a hoistway 101 formed within a building structure 100. As shown in fig. 1 and 2, the elevator 1 includes a car 10 that carries persons and cargoes, a hoisting machine 11, a control panel 12, a main rope 13, a compensating sheave 14, and a counterweight 15 that perform lifting and lowering operations in a hoistway 101. In addition, the elevator 1 includes: a car side guide rail 20 that supports the car 10 in a manner that makes the car 10 movable, and a counterweight side guide rail 30 that supports the counterweight 15 in a manner that makes the counterweight 15 movable. A machine room 102 is provided at the top of the hoistway 101.

The hoisting machine 11 is disposed in the machine room 102, and the main rope 13 is wound to raise and lower the car 10. In the machine room 102, a control panel 12 for controlling the entire elevator 1 is provided.

The main rope 13 is connected to the car 10 and the counterweight 15. The car 10 is coupled to a counterweight 15 via a main rope 13. A slider (slider) 16 that slides on a car-side guide rail 20 is provided on the car 10.

The hoisting machine 11 drives the car 10 to move up and down along the car-side guide rail 20 in the hoistway 101, and the counterweight 15 moves up and down along the counterweight-side guide rail 30 in the hoistway 101. The direction in which the car 10 and the counterweight 15 move up and down is set to the up-down direction. The vertical direction is parallel to the vertical direction.

In addition, the car 10 and the counterweight 15 are connected by a compensating rope 17. The compensating rope 17 is wound around the compensating sheave 14 disposed at the lowermost portion of the hoistway 101. The compensating sheave 14 is rotatably disposed at the lowermost portion of the hoistway 101.

The car-side guide rail 20 is supported by the support structure 50 and is installed upright in the hoistway 101. Similarly, the counterweight-side guide rail 30 is supported by the support structure 50, and is provided upright in the hoistway 101. The support structure 50 is fixed to the wall surface 103 of the hoistway 101, and a plurality thereof are provided along the vertical direction of the hoistway 101. The support structure 50 for supporting the car-side rail 20 and the support structure 50 for supporting the counterweight-side rail 30 have the same structure, and therefore, the support structure 50 for supporting the car-side rail 20 will be described below. Hereinafter, the car-side guide rail 20 and the counterweight-side guide rail 30 will be simply referred to as guide rails 20.

1-2 structural examples of support structures

Next, the structure of the support structure 50 will be described with reference to fig. 3 to 8.

Fig. 3 is a cross-sectional view showing the support structure 50 of the present example, and fig. 4 is a cross-sectional view showing a conventional support structure 50A.

As shown in fig. 3, the guide rail 20 has a slide surface portion 21 on which the slider 16 (refer to fig. 1) slides, and a rail bottom portion 22. The rail bottom 22 is opposed to a fixing bracket 51 of a supporting structure 50 described later. The sliding surface portion 21 protrudes substantially perpendicularly from the rail bottom portion 22.

The supporting structure 50 has a fixing bracket 51 fixed to a wall surface 103 of a hoistway 101, 2 rail clips 52, 2 fixing bolts 54, and 2 fixing nuts 55, 55. The rail clip 52 is formed of a member having a predetermined elastic force. The rail clip 52 is fastened to the fixing bracket 51 by means of a fixing bolt 54 and a fixing nut 55. The rail clips 52 hold both ends of the rail bottom 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 fig. 5 and 6, the fixing bracket 51 is formed in a substantially L-shape. The fixing bracket 51 has a fixing face 51a, an opposite face 51b, and a stepped portion 53. The fixing surface 51a is fixed to a fixing portion protruding from the wall 103 of the hoistway 101 by welding or fastening using a fixing bolt. The opposing surface portion 51b is continuous substantially perpendicularly to one end portion of the fixed surface portion 51a in the short side direction.

The opposing surface 51b is formed in a substantially flat plate shape having a substantially rectangular shape. At both ends of the opposite face 51b in the longitudinal direction (longitudinal direction), fixing holes 51c are formed. In the fixing hole 51c, a fixing bolt 54 for fixing the rail clip 52 is inserted.

The opposing surface 51b is disposed opposite to the back surface of the rail bottom 22, wherein the back surface of the rail bottom 22 is located on the opposite side of the rail bottom 22 from the surface of the sliding surface 21. A step 53 is formed in the opposing surface 51b. The stepped portion 53 is formed between the 2 fixing holes 51c, 51c. The step 53 protrudes from a surface of the opposing surface 51b opposing the rail bottom 22 of the guide rail 20 toward the rail bottom 22. The step 53 is a substantially rectangular convex portion having a flat surface. The step 53 is located between the rail bottom 22 and the facing surface 51b of the guide rail 20, and is in surface contact with the rear surface of the rail bottom 22.

Fig. 4, 7 and 8 illustrate a prior art support structure 50A.

As shown in fig. 4, the conventional support structure 50A has a fixing bracket 51A, 2 rail clips 52, 2 fixing bolts 54, and 2 fixing nuts 55, 55. The rail clip 52, the fixing bolt 54, and the fixing nut 55 are the same as the supporting structure 50 of the present example shown in fig. 3, and therefore, the description thereof is omitted.

As shown in fig. 7 and 8, the fixing bracket 51A is formed in a substantially L-shape, and has a fixing surface portion 51A and a facing surface portion 51b. The opposing face 51b is continuous substantially perpendicularly to one end of the fixed face 51 a. In the opposite face portion 51b, 2 fixing holes 51c into which fixing bolts 54 are inserted are formed. In this conventional support structure 50A, the back surface of the rail bottom 22 of the guide rail 20 is in surface contact with the opposing surface 51b of the fixing bracket 51A.

In comparison with the conventional support structure 50A and the support structure 50 of the present example, in the support structure 50 of the present example, the guide rail 20 is disposed in a direction away from the facing surface 51b compared with the conventional support structure 50A shown in fig. 4 due to the stepped portion 53 provided in the fixing bracket 51. Therefore, the rail clip 52 of the support structure 50 of the present example is greatly deflected as compared to the rail clip 52 of the conventional support structure 50A. As a result, according to the support structure 50 of the present embodiment, the holding force of the rail clip 52 on the guide rail 20 can be made higher than that of the conventional support structure 50A.

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

Further, the same kind of rail clips 52 can be used for elevators provided in different building structures 100 having the same kind of guide rails 20. Thus, the rail clips 52 can be shared, and it is not necessary to design the rail clips 52 for each elevator.

In addition, it is not necessary to make all of the plurality of support structures be the support structure 50 provided with the stepped portion 53 shown in fig. 3. For example, the support structure 50 of the present example shown in FIG. 3 may be applied to some of the plurality of support structures, with the existing support structure 50A shown in FIG. 4 being applied to the remaining support structures. The number of the support structures 50 of the present example applied to the plurality of support structures can be appropriately set according to the weight of the rail 20.

2. Examples of the second embodiment

Next, a supporting structure of a guide rail according to an example of the second embodiment will be described with reference to fig. 9 to 11.

Fig. 9 is a sectional view showing a support structure, fig. 10 is a plan view showing a fixing bracket in the support structure, and fig. 11 is a front view showing the fixing bracket in the support structure.

The example support structure 50B of the second embodiment differs from the example support structure 50 of the first embodiment in the structure of the fixing bracket. Therefore, the fixing bracket will be described herein, and the same reference numerals will be given to the portions common to the support structure 50 of the example of the first embodiment, and the duplicate description will be omitted.

As shown in fig. 9, the support structure 50B has a fixing bracket 51B, 2 rail clips 52, 2 fixing bolts 54, and 2 fixing nuts 55, 55. As shown in fig. 10 and 11, the fixing bracket 51B has a fixing face 51a, an opposite face 51B, and 2 stepped portions 57, 57. 2 fixing holes 51c are formed in the opposite face 51b.

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

2 fixing holes 51c, 51c are formed in the opposite face 51b. The fixing hole 51c is formed in a portion of the opposing surface portion 51b where the step portion 57 is provided, and penetrates the step portion 57 and the opposing surface portion 51b. A fixing bolt 54 is inserted into the fixing hole 51c. When the rail clip 52 is mounted on the fixing bracket 51B, the stepped portion 57 is located between the rail clip 52 and the opposing face portion 51B, and contacts the rail clip 52. In addition, the back surface of the rail bottom 22 of the guide rail 20 is in contact with the opposing surface portion 51b.

According to the support structure 50B of the example of this second embodiment, as shown in fig. 9, the stepped portion 57 is located between the rail clip 52 and the opposing face portion 51B, and therefore the amount of deflection of the rail clip 52 can be reduced as compared with the conventional support structure 50A shown in fig. 4. As a result, according to the support structure 50B of the example of the second embodiment, the holding force of the rail clip 52 on the guide rail 20 can be reduced as compared with the conventional support structure 50A.

The other structures are the same as the supporting structure 50 of the example of the first embodiment, and therefore, the description thereof is omitted. The same operational effects as those of the support structure 50 of the example of the first embodiment described above can be obtained also with the support structure 50B of the example of the second embodiment.

Further, by selecting the fixing bracket 51 of the example of the first embodiment or the fixing bracket 51B of the example of the second embodiment in advance, the amount of deflection of the rail clip 52 can be adjusted for each elevator. As a result, the holding force of the rail clip 52 can be optimized, and the number of kinds of rail clips 52 to be used can be prevented from increasing.

3. Example of the third embodiment

Next, a supporting structure of a rail according to an example of the third embodiment will be described with reference to fig. 12 to 14.

Fig. 12 is a sectional view showing a supporting structure, fig. 13 is a front view showing a gasket in the supporting structure, and fig. 14 is a front view showing a fixing plate in the supporting structure.

The example support structure 60 of this third embodiment differs from the example support structure 50 of the first embodiment in that a spacer and a fixing plate are provided. Therefore, the same reference numerals are given to the portions common to the support structure 50 of the example of the first embodiment and the conventional support structure 50A, and the duplicate explanation is omitted.

As shown in fig. 12, the support structure 60 has a fixing bracket 51A, 2 rail clips 52, and 2 fixing bolts 54, 54. The fixing bracket 51A has the same structure as the fixing bracket 51A of the conventional supporting structure 50A shown in fig. 4, and therefore, a description thereof will be omitted. In addition, the support structure 60 has a spacer 61 and a fixing plate 64.

The spacer 61 is located between the opposite face 51b of the fixing bracket 51A and the rail bottom 22 and the rail clip 52 of the guide rail 20. As shown in fig. 13, the pad 61 is formed in a rectangular flat plate shape. Insertion openings 61a, 61a are formed at both ends in the longitudinal direction of the gasket 61. The insertion port 61a is a notch continuous from one end to the center in the short side direction of the pad 61. When the spacer 61 is disposed on the opposing surface portion 51b, the fixing bolt 54 is inserted into the insertion port 61a.

Further, a step 63 is provided in the spacer 61. The step 63 is formed between the 2 insertion openings 61a, 61a. The step 63 protrudes from a surface of the gasket 61 opposite to the rail bottom 22 of the guide rail 20 toward the rail bottom 22. The step 63 is a substantially rectangular convex portion. The step 63 is located between the rail bottom 22 and the opposing surface 51b of the guide rail 20, and contacts the back surface of the rail bottom 22.

By inserting the spacer 61 between the rail 20 and the fixing bracket 51A, the rail 20 can be separated from the opposing surface portion 51b of the fixing bracket 51A, and the amount of deflection of the rail clip 52 can be increased.

The fixing plate 64 is disposed on a surface opposite to a surface of the opposing surface portion 51b opposing the guide rail 20. As shown in fig. 14, the fixing plate 64 is formed in a substantially flat plate shape, and is formed to be longer than the interval between the 2 fixing bolts 54, 54 attached to the fixing bracket 51A. Nuts 65 are fixed to both ends of the fixing plate 64 in the longitudinal direction by welding. Accordingly, the nut 65 does not need to be supported by hand when the fixing bolt 54 is fastened, and the work efficiency is improved.

The fixing plate 64 can be applied to the support structure 50 of the example of the first embodiment and the support structure 50B of the example of the second embodiment.

The other structures are the same as the supporting structure 50 of the example of the first embodiment, and therefore, the description thereof is omitted. The same operational effects as those of the support structure 50 of the example of the first embodiment described above can be obtained also with the support structure 60 of the example of the third embodiment.

In addition, according to the support structure 60 of the example of the third embodiment, the stepped portion can be formed by sandwiching the gasket 61 between the guide rail 20 and the fixing bracket 51A without processing the fixing bracket 51A, the guide rail 20, and the like. Thus, with the conventional rail support structure, the deflection of the rail clip 52 can be adjusted, and the holding force of the rail clip 52 can be easily adjusted to an optimal holding force.

4. Example of the fourth embodiment

Next, a supporting structure of a guide rail according to an example of the fourth embodiment will be described with reference to fig. 15A to 15C.

Fig. 15A is a plan view showing the fixing bracket in the supporting structure, fig. 15B is a front view, and fig. 15C is a side view.

The support structure of the example of this fourth embodiment differs from the support structure 50 of the example of the first embodiment in the structure of the stepped portion of the fixing bracket. Therefore, the fixing bracket will be described herein, and the same reference numerals will be given to the portions common to the support structure 50 of the example of the first embodiment, and redundant description will be omitted.

As shown in fig. 15A to 15C, the fixing bracket 51C has a fixing face 51a and a facing face 51b. A stepped portion 53 and 2 fixing holes 51c are formed in the opposite face portion 51b. Further, chamfers 53a are formed (applied) to upper end side and lower end side corners of the step 53 in the up-down direction. Thus, when the rail bottom 22 and the step 53 slide due to shrinkage of the building structure 100, the step 53 and the rail bottom 22 can be prevented from being caught by a minute step, paint accumulation, or the like formed on the rear surface of the rail bottom 22.

The chamfering method of the corner of the step 53 is also applicable to the step 57 of the fixing bracket 51B of the example of the second embodiment and the step 63 of the spacer 61 of the example of the third embodiment.

The other structures are the same as the supporting structure 50 of the example of the first embodiment, and therefore, the description thereof is omitted. The supporting structure having the fixing bracket 51C according to the example of the fourth embodiment can also obtain the same operational effects as the supporting structure 50 according to the example of the first embodiment.

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

In the above embodiment, the example in which the stepped portion is provided on the side of the rail bracket has been described, but the present invention is not limited to this, and the stepped portion may be provided on the surface of the rail bottom 22 of the guide rail 20 that faces the fixing bracket. Further, the step portion is described as a convex portion, but the step portion may be a concave portion recessed from the opposite surface portion of the fixing bracket or one surface of the pad.

Further, in the above embodiment, the example in which the step portion is the convex portion having the flat surface in surface contact with the rail bottom portion 22 or the rail clip 52 of the guide rail 20 has been described, but the present invention is not limited thereto. The step portion may be formed in various other shapes such as a protrusion and a ridge.

In the present specification, the terms "parallel" and "orthogonal" are used, but these terms do not mean strictly "parallel" and "orthogonal", but may include "parallel" and "orthogonal", and further "substantially parallel" and "substantially orthogonal" states within a range where the functions thereof can be exhibited.

Description of the reference numerals

1 … … elevator, 10 … … car, 11 … … machine, 13 … … main rope, 15 … … counterweight, 16 … … slider, 20 … … car side rail, 21 … … sliding face, 22 … … rail bottom, 25 … … reinforcement member, 30 … … counterweight side rail, 50A, 50B … … support structure, 51A, 51B, 51C, 60 … … fixing bracket, 51A … … fixing face, 51B … … opposing face, 51C … … fixing hole, 52 … … rail clip, 53, 57, 63 … … stepped portion, 53a … … chamfer, 54 … … fixing bolt, 55 … … fixing nut, 61 … … gasket, 61A … … insertion opening, 64 … … fixing plate, 65 … … nut, 100 … … building structure, 101 … …,103 … … wall face.

Claims (8)

1. A support structure for a guide rail, comprising:

a rail clip having elasticity, which holds a rail bottom of a rail provided upright in a hoistway; and

a fixing bracket arranged on the back surface of the bottom of the rail, the rail clip is fixed on the fixing bracket,

a step portion for adjusting the deflection amount of the rail clip is provided between the rail clip and the fixing bracket or between the fixing bracket and the rail bottom.

2. The guide rail support structure of claim 1, wherein:

the step portion is a convex portion protruding toward the guide rail from an opposing face portion of the fixing bracket that opposes the back surface of the rail bottom portion.

3. The guide rail support structure of claim 2, wherein:

the step portion is in contact with the back surface of the rail bottom portion.

4. The guide rail support structure of claim 2, wherein:

the step part is formed at the part of the opposite surface part for fixing the track clamp and is contacted with the track clamp;

the back surface of the rail bottom portion is in contact with the opposite face portion.

5. The guide rail support structure of claim 1, wherein:

comprising a gasket between the fixing bracket and the guide rail,

the step is a protrusion formed on the pad.

6. The guide rail support structure of claim 5, wherein:

the track clamp is fixed on the fixing bracket by a fixing bolt,

a notch into which the fixing bolt can be inserted is formed in the spacer.

7. The guide rail support structure of claim 2 or 5, wherein:

a chamfer is formed at a corner of the step.

8. An elevator, characterized by comprising:

a guide rail disposed upright within the hoistway; and

a support structure for supporting the guide rail,

the support structure includes:

a rail clip having elasticity, which holds a rail bottom of the guide rail; and

a fixing bracket arranged on the back surface of the bottom of the rail, the rail clip is fixed on the fixing bracket,

a step portion for adjusting the deflection amount of the rail clip is provided between the rail clip and the fixing bracket or between the fixing bracket and the rail bottom.

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