Elevator and protective cover

Abstract

To provide an elevator and a protective cover capable of preventing a long object from getting stuck in the gap between a guide-rail and a rail clip.SOLUTION: An elevator comprises an elevating / lowering body, a guide rail 6 to movably support the elevating / lowering body, a rail bracket 21 to support the guide rail 6, a rail clip 22, and a protective cover 30. The rail clip 22 has a clamping part 22a provided on the rail bracket 21 and configured to clamp a flange part 6b of the guide rail 6. The protective cover 30 has a covering part 31 to cover the clamping part 22a of the rail clip 22.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to an elevator and a protective cover.

Background Art

[0002] Conventionally, an elevator includes a car, a counterweight, a rope connecting the car and the counterweight, and a hoisting machine around which the rope is wound. Further, the elevator has various long objects (hereinafter referred to as long objects), such as a detector for position detection, in the hoistway. Such long objects may sway greatly due to an earthquake or wind and get into the gap between the guide rail installed in the hoistway and the rail clip supporting the guide rail.

[0003] As a technique for preventing such a long object from being caught by the rail clip, for example, there is one described in Patent Document 1. Patent Document 1 describes a technique having a protective wire stretched in the hoistway along the vertical direction and a plurality of displacement restricting fittings fixed to the rail bracket. The displacement restricting fitting has a flat spacer portion interposed between the rail bracket and the car guide rail, and a displacement restricting portion formed by bending one end portion of the spacer portion so as to surround the protective wire.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the technique described in Patent Document 1, the displacement restricting portion is formed by bending one end portion of the spacer portion. Therefore, when a long object sways due to an earthquake or wind, there is a risk that the long object may come off from the gap between the displacement restricting portion and the spacer portion. As a result, in the technique described in Patent Document 1, there is a problem that the long object that has come off from the displacement restricting portion gets mixed into the gap between the guide rail and the rail clip, and the long object gets caught by the rail clip.

[0006] In consideration of the above problems, an object of the present invention is to provide an elevator and a protective cover that can prevent a long object from getting mixed into the gap between a guide rail and a rail clip.

Means for Solving the Problems

[0007] To solve the above problems, an elevator includes an elevating body that moves up and down in a hoistway, a guide rail that movably supports the elevating body, a rail bracket that supports the guide rail, a rail clip, and a protective cover. The rail clip is provided on the rail bracket and has a clamping portion that clamps the flange portion of the guide rail. The protective cover is provided on the rail clip and has a covering portion that covers the clamping portion of the rail clip.

[0008] Also, the above-described protective cover is applied.

Effects of the Invention

[0009] According to the elevator and the protective cover having the above configuration, it is possible to prevent a long object from getting mixed into the gap between the guide rail and the rail clip.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0011] Hereinafter, examples of embodiments of an elevator and a protective cover will be described with reference to Figs. 1 to 10. In each figure, common members are denoted by the same reference numerals.

[0012] 1. Example of Embodiment 1-1. Configuration of Elevator First, the configuration of an elevator according to an example of an 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, and Fig. 2 is a plan view showing the elevator.

[0013] As shown in FIGS. 1 and 2, the elevator 100 includes a hoisting machine 3, a car 4 for carrying people and goods, and a counterweight 5. The elevator 100 also includes car-side guide rails 6 and 7, and weight-side guide rails 8 and 9.

[0014] Furthermore, the elevator 100 includes a tape-shaped detector 2 and a position detector 10 provided on the car 4 to detect the position of the car 4. The detector 2, which is an example of a long object, passes through an opening provided in the position detector 10. The position detector 10 detects the position of the car 4 by detecting the detector 2.

[0015] For example, a magnetic tape is applied as the detector 2. As the position detector 10, a magnetic sensor for reading data of the detector 2 which is a magnetic tape is applied. Note that, for example, an absolute position detector is applied as the position detector 10.

[0016] The detector 2 is not limited to a magnetic tape, and for example, an optical tape or various other tape-shaped detectors may be applied. Also, as the position detector 10, an optical sensor or various other position detectors are applied.

[0017] The car 4, which is an example of a lifting body, is formed in a hollow substantially rectangular parallelepiped shape. The car 4 moves up and down along the car-side guide rails 6 and 7 in the hoistway 1. The car-side guide rails 6 and 7 are arranged on both sides of the car 4. Also, the car-side guide rails 6 and 7 are erected in the hoistway 1. The car-side guide rails 6 and 7 are supported by rail brackets 21 (see FIG. 4) via rail clips 22. Also, a pulley (not shown) is provided on the car 4. A main rope (not shown) is wound around this pulley. The main rope is wound around the sheave of the hoisting machine 3 and the pulley provided on the counterweight.

[0018] The hoist 3 is installed above the elevator shaft 1 in the elevating direction. Note that the installation position of the hoist 3 is not limited to the upper part of the elevator shaft 1, and it may be installed at the lower part of the elevator shaft 1. Alternatively, a machine room may be provided in the elevator shaft 1, and the hoist 3 may be installed in this machine room.

[0019] Below the hoist 3, a counterweight 5 is arranged. The counterweight 5, which shows an example of the elevating body, moves up and down along the elevator shaft 1 along the weight-side guide rails 8 and 9. The weight-side guide rails 8 and 9 are arranged on both sides of the counterweight 5. And the weight-side guide rails 8 and 9 are erected in the elevator shaft 1.

[0020] The detection body 2 extends from the top 1a to the bottom (pit) 1b of the elevator shaft 1 along the elevating direction of the car 4 in the elevator shaft 1. Also, an upper bracket 12 is fixed to the upper part of the car-side guide rail 6, and a lower bracket 11 is fixed to the lower part of the car-side guide rail 6. Further, an upper tape fixing part 13 is fixed to the upper bracket 12, and a lower tape fixing part 15 is fixed to the lower bracket 11.

[0021] An upper clip 14 is provided at the upper end of the detection body 2. And the upper clip 14 is fixed to the upper tape fixing part 13. Further, a lower clip 16 is provided at the lower end of the detection body 2. And the lower clip 16 is fixed to the lower tape fixing part 15. Although an example in which the upper tape fixing part 13 and the lower tape fixing part 15 are provided has been described, it is not limited thereto. For example, the upper clip 14 may be fixed to the upper bracket 12 and the lower clip 16 may be fixed to the lower bracket 11.

[0022] FIG. 3 is a perspective view showing an example of the installation example of the detection body 2. In the example shown in FIG. 3, an example of installation without providing the upper tape fixing part 13 and the lower tape fixing part 15 will be described.

[0023] As shown in FIG. 3, the upper clip 14 provided at the upper end of the detector 2 is fixed to the upper bracket 12. A spring 18 is provided on the lower clip 16 provided at the lower end of the detector 2. The upper end of the spring 18 is fixed to the lower clip 16, and the lower end of the spring 18 is fixed to the lower bracket 11. Then, a tension is applied to the detector 2 by the spring force of the spring 18.

[0024] 1-2. Support Structure of Car-Side Guide Rail Next, with reference to FIGS. 4 and 5, the support structure of the car-side guide rails 6 and 7 will be described. In the following description, FIG. 4 is a cross-sectional view showing the car-side guide rail 6, and FIG. 5 is a front view showing the support structure of the car-side guide rail 6. In the example shown in FIGS. 4 and 5, the support structure of the car-side guide rail 6 on the side where the detector 2, which is a long object, is arranged among the two car-side guide rails 6 and 7 will be described.

[0025] As shown in FIGS. 4 and 5, the car-side guide rail 6 has a sliding portion 6a on which the car 4 slides, a flange portion 6b, and a connecting portion 6c that connects the sliding portion 6a and the flange portion 6b. And the car-side guide rail 6 is supported by a rail bracket 21 provided in the hoistway 1. A pair of rail clips 22, 22 for sandwiching the flange portion 6b of the car-side guide rail 6 are provided on the rail bracket 21. The pair of rail clips 22, 22 are arranged at both ends of the flange portion 6b with the sliding portion 6a and the connecting portion 6c of the car-side guide rail 6 interposed therebetween.

[0026] Also, the rail clip 22 is fastened and fixed to the rail bracket 21 via a fixing bolt 23 and a nut 24. The nut 24 is arranged on the other surface of the rail bracket 21 opposite to the surface facing the car-side guide rail 6. And the head of the fixing bolt 23 is arranged on the surface side of the rail bracket 21 facing the car-side guide rail 6.

[0027] Further, a protective cover 30 is disposed on one of the pair of rail clips 22, 22. This protective cover 30 is disposed on the rail clip 22 on the side where the detection body 2 indicating a long object is disposed, with the sliding portion 6a of the cage-side guide rail 6 interposed therebetween. Note that the protective cover 30 may be provided on both sides of the pair of rail clips 22, 22.

[0028] 2. Configuration Example of Protective Cover Next, the configuration of the protective cover 30 will be described with reference to FIGS. 6A to 10. FIGS. 6A to 6C are views showing the protective cover 30. FIGS. 7A to 7C are views showing another example of the protective cover. FIG. 8 is a front view showing the protective cover 30, the rail clip 22, and the fixing bolt 23. FIG. 9 is a top view showing the protective cover 30 and the rail clip 22. FIG. 10 is a front view showing the protective cover 30, the rail clip 22, the fixing bolt 23, and the nut 24.

[0029] As shown in FIGS. 6A to 6C, it has a covering portion 31 and leg portions 32. The covering portion 31 is formed in a substantially flat plate shape. Chamfering may be performed on the corners of the covering portion 31. Thereby, when installing the protective cover 30, it is possible to prevent damage at the corners of the covering portion 31.

[0030] Further, leg portions 32 are formed at both upper and lower ends in the vertical direction of the covering portion 31. The leg portions 32 are bent substantially vertically from a part of the upper end portion and the lower end portion of the covering portion 31. And the leg portions 32 project from the covering portion 31 toward the rail bracket 21. This leg portion 32 is formed, for example, by bending a part of the upper end portion and the lower end portion of the covering portion 31. As shown in FIG. 4, when the protective cover 30 is installed, the leg portion 32 abuts on the rail bracket 21. Note that by bringing the leg portion 32 into contact with the rail bracket 21, the positioning of the protective cover 30 can be easily performed.

[0031] In the protective cover 30 shown in FIGS. 6A to 6C, an example in which the leg portion 32 is provided has been described, but the present invention is not limited thereto. The protective cover 30B shown in FIGS. 7A to 7C does not have the leg portion 32. Even with such a protective cover 30B, the same effects as those of the protective cover 30 shown in FIGS. 6A to 6C can be obtained. Further, according to the protective cover 30B shown in FIGS. 7A to 7C, bending processing for forming the leg portion 32 is not required, and the protective cover 30B can be easily manufactured.

[0032] An opening 31a and an insertion hole 31b are formed in the covering portion 31. The insertion hole 31b has a circular opening. The shaft portion of the fixing bolt 23 for fixing the rail clip 22 to the rail bracket 21 is inserted into the insertion hole 31b. Note that the opening diameter of the insertion hole 31b is set smaller than the diameter of the head of the fixing bolt 23.

[0033] An opening 31a is formed in the vicinity of the insertion hole 31b. The shape of the opening 31a corresponds to the shape of the portion bulging from the flange portion 6b toward the sliding portion 6a in the rail clip 22. As shown in FIGS. 8 to 10, the bulging portion of the rail clip 22 is inserted into the opening 31a. Thereby, it is possible to prevent the covering portion 31 of the protective cover 30 from interfering with the rail clip 22. Further, the covering portion 31 of the protective cover 30 covers the tip of the clamping portion 22a that clamps the flange portion 6b of the cage side guide rail 6 in the rail clip 22. Specifically, the covering portion 31 covers the side away from the flange portion 6b facing one surface of the rail bracket 21 in the clamping portion 22a of the rail clip 22, that is, the front.

[0034] Also, as shown in FIGS. 4 and 5, when the rail clip 22 is fixed to the rail bracket 21 via the fixing bolt 23, the fixing bolt 23 is inserted into the insertion hole 31b of the protective cover 30. And the covering portion 31 of the protective cover 30 is clamped between the head of the fixing bolt 23 and the rail clip 22. That is, the protective cover 30 of this example can be fixed using the fixing bolt 23 for fixing the rail clip 22. As a result, there is no need to provide a member for fixing the protective cover 30, and the number of parts can be reduced.

[0035] Also, as described above, an opening 31a into which the bulging portion of the rail clip 22 is inserted is formed in the covering portion 31 of the protective cover 30. Thereby, by inserting a part of the rail clip 22 into the opening 31a of the covering portion 31, it is possible to prevent the protective cover 30 from falling off.

[0036] Also, by inserting a part of the rail clip 22 into the opening 31a of the covering portion 31, the protective cover 30 can be arranged close to the rail bracket 21. Thereby, it is possible to suppress the protective cover 30 from protruding toward the sliding portion 6a side of the car-side guide rail 6. When there is a sufficient gap between the rail clip 22 and the sliding portion 6a of the car-side guide rail 6, the opening 31a into which a part of the rail clip 22 is inserted may not be provided in the covering portion 31.

[0037] Also, the covering portion 31 of the protective cover 30 covers the tip of the clamping portion 22a of the rail clip 22. Thereby, even when the detection body 2 showing an example of a long object swings greatly due to an earthquake or wind, it is possible to prevent the detection body 2 from entering the gap between the clamping portion 22a of the rail clip 22 and the car-side guide rail 6.

[0038] Furthermore, the covering portion 31 protrudes toward the connecting portion 6c of the car-side guide rail 6. The tip of the covering portion 31 is in contact with the connecting portion 6c of the car-side guide rail 6. This can prevent the detection body 2 from getting mixed into the flange portion 6b side from the connecting portion 6c of the car-side guide rail 6. As a result, it is possible to reliably prevent the detection body 2 from getting mixed into the gap between the clamping portion 22a of the rail clip 22 and the car-side guide rail 6 by the protective cover 30.

[0039] Also, the insertion hole 31b into which the fixing bolt 23 is inserted is formed as a long hole or is sufficiently larger than the shaft portion of the fixing bolt 23. Thereby, the alignment of the protective cover 30 with respect to the car-side guide rail 6 can be easily performed, and the tip of the covering portion 31 can be surely brought into contact with the connecting portion 6c of the car-side guide rail 6.

[0040] In addition, leg portions 32 that contact the rail bracket 21 are provided at the upper and lower ends of the protective cover 30. The leg portions 32 can also prevent the detection body 2 from entering the clamping portion 22a side of the rail clip 22.

[0041] Note that, in the protective cover 30 of this example, an example of covering the clamping portion 22a of the rail clip 22 has been described, but the present invention is not limited to this. The entire rail clip 22 may be covered by the protective cover.

[0042] Moreover, according to the protective cover 30 of this example, it can be easily attached to the rail clip 22 and the rail bracket 21 by the fixing bolt 23 that fixes the rail clip 22. Therefore, the protective cover 30 of this example is not limited to the example of being installed in the new elevator 100, and can be easily installed during the renewal work of the existing elevator.

[0043] Furthermore, an example in which the protective cover 30 and the rail clip 22 are configured as separate members has been described, but the present invention is not limited thereto, and the protective cover 30 and the rail clip 22 may be integrally formed. That is, the protective cover 30 and the rail clip 22 may be fixed, for example, by welding, or the rail clip 22 may be provided with a flat covering portion that covers the clamping portion 22a.

[0044] Note that the present invention is not limited to the embodiments 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.

[0045] In the above example, an example in which a protective cover is provided on the cage side guide rail 6 has been described, but the present invention is not limited thereto, and a protective cover may be provided on the rail clip and the rail bracket that support the weight side guide rail.

[0046] Furthermore, the elongated object whose catch is protected by the protective covers 30 and 30B of the present example is not limited to the detection body 2 for position detection, and various other elongated objects such as ropes and protective wires can be applied.

[0047] Furthermore, the configuration of the elevator 100 is not limited to the 2:1 roping elevator shown in FIG. 1, and various other elevators such as 1:1 roping elevators and hydraulic elevators can be applied.

[0048] In this specification, words such as "parallel" and "orthogonal" are used, but these do not mean only strict "parallel" and "orthogonal", and may be in a state of "substantially parallel" or "substantially orthogonal" that includes "parallel" and "orthogonal" and is within a range where their functions can be exerted.

Explanation of Reference Numerals

[0049] 1... Elevator shaft, 1a... Top, 1b... Bottom, 2... Detection object (long object), 3... Hoisting machine, 4... Car (elevating body), 5... Counterweight (elevating body), 6... Car side guide rail, 6a... Sliding part, 6b... Flange part, 6c... Connecting part, 8... Weight side guide rail, 10... Position detector, 21... Rail bracket, 22... Rail clip, 22a... Clamping part, 23... Fixed bolt, 24... Nut, 30, 30B... Protection cover, 31... Covering part, 31a... Opening, 31b... Insertion hole, 32... Leg part, 100... Elevator

Claims

1. An elevating body that moves up and down along an elevating path, a guide rail that movably supports the elevating body, a rail bracket that supports the guide rail, a rail clip provided on the rail bracket and having a clamping portion that clamps a flange portion of the guide rail, a protective cover provided on the rail clip and having a covering portion that covers the clamping portion of the rail clip, and an elevator comprising the same.

2. The rail clip is fixed to the rail bracket via a fixing bolt, an insertion hole through which a shaft portion of the fixing bolt is inserted is formed in the covering portion of the protective cover, and the protective cover is clamped by the head of the fixing bolt and the rail clip The elevator according to Claim 1.

3. An opening portion into which a part of the rail clip is inserted is formed in the covering portion The elevator according to Claim 1.

4. The guide rail has a sliding portion on which the elevating body slides, a flange portion clamped by the rail clip, and a connecting portion that connects the sliding portion and the flange portion, and the covering portion of the protective cover abuts against the connecting portion The elevator according to Claim 1.

5. A pair of the rail clips are provided on both sides of the guide rail, and the protective cover is disposed on the rail clip on the side where the elongate object is installed among the pair of rail clips The elevator according to Claim 1.

6. Leg portions protruding toward the rail bracket are provided on the covering portion The elevator according to Claim 1.

7. Provided on a rail clip having a clamping portion that clamps a flange portion of a guide rail of an elevator, and having a covering portion that covers the clamping portion in the rail clip A protective cover.

Images