Elevator

Abstract

This elevator comprises a car that moves up and down on a hoistway, a detection body that comprises a magnetic tape, a position detector, and a shake suppression member. The detection body extends from a top part to a lowermost part of the hoistway. The position detector is provided in the car and detects the position of the car by detecting the detection body. The shake suppression member is provided on the hoistway so as to face the detection body, and is made of a magnetic body that adheres to the detection body.

Description

elevator

[0001] The present invention relates to an elevator.

[0002] In conventional elevators, a shielding plate is installed in the elevator shaft to detect the position of the car, and when the car passes through the shielding plate, a detector installed in the car detects the plate to detect the position of the car.In recent years, a technology has been proposed in which a tape-shaped detector is installed in the elevator shaft along the direction in which the car ascends and descends, and this detector is detected by a position detector installed in the car to detect the position of the car.

[0003] An example of such a technology is described in Patent Document 1. Patent Document 1 describes a technology in which a just level sensor is provided to detect when the car has landed at each floor landing. Patent Document 1 also describes a technology in which the car is manually operated to the top floor or the bottom floor, and then the car is moved back and forth within the elevator shaft, and the position on a magnetic tape when the just level sensor is activated is recorded as just level.

[0004] JP 2015-113180 A

[0005] However, the detection body is tape-shaped and long, stretching from the top to the bottom of the hoistway, which means that the detection body may be subject to large swings due to earthquakes or strong winds, and may become caught on other components installed in the hoistway.

[0006] In consideration of the above problems, the present invention aims to provide an elevator that can suppress the shaking of a detected object.

[0007] To solve the above problems and achieve the object, an elevator includes a car that moves up and down in a hoistway, a detection body made of magnetic tape, a position detector, and a vibration suppression member. The detection body extends from the top to the bottom of the hoistway. The position detector is provided in the car and detects the detection body to determine the position of the car. The vibration suppression member is provided in the hoistway opposite the detection body and is made of a magnetic material that attracts the detection body.

[0008] According to the elevator having the above configuration, it is possible to suppress the swinging of the detection object and to prevent the detection object from getting caught on other components installed in the elevator shaft.

[0009] FIG. 4( a) is a schematic diagram showing an elevator according to an embodiment; FIG. 4( b) is a plan view showing an elevator according to an embodiment; FIG. 4( a) is a perspective view showing an example of an installation example of a detection body of an elevator according to an embodiment; FIG. 4( a) and FIG. 4( b) are perspective views showing other examples of installation examples of a detection body of an elevator according to an embodiment; FIG. 4( a) is a perspective view showing the configuration around a lower clip of a detection body of an elevator according to an embodiment; FIG. 4( b) is a perspective view showing the configuration around a lower clip of a detection body of an elevator according to an embodiment; FIG. 4( a) is a perspective view showing an elevator car and a sway suppressing member according to a first embodiment; FIG. 4( b) is a plan view showing an elevator sway suppressing member according to a first embodiment; FIG. 4( b) is a front view showing an elevator sway suppressing member according to a second embodiment;

[0010] Hereinafter, an embodiment of an elevator will be described with reference to Figures 1 to 10. Note that common members in each figure are given the same reference numerals.

[0011] 1. Example of embodiment 1-1. Elevator configuration First, the configuration of an elevator according to an example of embodiment (hereinafter referred to as "this example") will be described with reference to Figures 1 and 2. Figure 1 is a schematic diagram showing the elevator, and Figure 2 is a plan view showing the elevator.

[0012] 1 and 2, the elevator 100 includes a hoist 3, a car 4 for carrying passengers and luggage, and a counterweight 5. The elevator 100 also includes car-side guide rails 6 and 7 and counterweight-side guide rails 8 and 9.

[0013] Furthermore, the elevator 100 is equipped with a tape-shaped detection body 2 and a position detector 10 provided on the car 4 in order to detect the position of the car 4. The detection body 2 is inserted through an opening provided in the position detector 10. The position detector 10 detects the detection body 2, thereby detecting the position of the car 4.

[0014] For example, a magnetic tape is used as the detection body 2. A magnetic sensor that reads data from the magnetic tape detection body 2 is used as the position detector 10. For example, an absolute position detector is used as the position detector 10.

[0015] The car 4 is formed in a hollow, approximately rectangular parallelepiped shape. The car 4 moves up and down in the hoistway 1 along car-side guide rails 6, 7. The car-side guide rails 6, 7 are arranged on both sides of the car 4. The car-side guide rails 6, 7 are also erected within the hoistway 1. The car 4 is also provided with a pulley (not shown). A main rope (not shown) is wound around this pulley. The main rope is wound around a sheave of the hoisting machine 3 and a pulley provided on the counterweight.

[0016] The hoisting machine 3 is installed at the top in the ascending / descending direction of the hoistway 1. The location where the hoisting machine 3 is installed is not limited to the top of the hoistway 1, but it may also be installed at the bottom of the hoistway 1. Also, a machine room may be provided in the hoistway 1, and the hoisting machine 3 may be installed in this machine room.

[0017] A counterweight 5 is disposed below the hoisting machine 3. The counterweight 5 moves up and down in the hoistway 1 along counterweight-side guide rails 8 and 9. The counterweight-side guide rails 8 and 9 are disposed on both sides of the counterweight 5. The counterweight-side guide rails 8 and 9 are erected in the hoistway 1.

[0018] The detection body 2 extends from the top 1a of the hoistway 1 to the bottom (pit) 1b in the ascending and descending direction of the car 4 within the hoistway 1. 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. 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.

[0019] An upper clip 14 is provided at the upper end of the detection body 2. The upper clip 14 is fixed to the upper tape fixing portion 13. Furthermore, a lower clip 16 is provided at the lower end of the detection body 2. The lower clip 16 is fixed to the lower tape fixing portion 15. Although an example in which the upper tape fixing portion 13 and the lower tape fixing portion 15 are provided has been described, the present invention is not limited to this. 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.

[0020] 1-2. Installation example of the detection body In order to accurately detect the position of the car 4, it is necessary to apply tension to the tape-shaped detection body 2 and install the detection body 2 in the elevator shaft 1 without bending. Next, an example of installing the detection body 2 while applying tension will be described with reference to Figs. 3 to 6. Fig. 3 is a perspective view showing an example of installation of the detection body 2. In the example shown in Fig. 3, an example of installation without providing the upper tape fixing portion 13 and the lower tape fixing portion 15 will be described.

[0021] As shown in Figure 3, an upper clip 14 provided at the upper end of the detection body 2 is fixed to the upper bracket 12. A lower clip 16 provided at the lower end of the detection body 2 is provided with a spring 21. The upper end of the spring 21 is fixed to the lower clip 16, and the lower end of the spring 21 is fixed to the lower bracket 11. A tension is applied to the detection body 2 by the spring force of the spring 21.

[0022] 4(a) and 4(b) are diagrams showing another example of installation of the detector 2. As shown in Fig. 4(a) and 4(b), an upper clip 14 provided at the upper end of the detector 2 is fixed to the upper bracket 12 or the upper tape fixing part 13. A lower clip 16 provided at the lower end of the detector 2 is inserted into the lower bracket 11 or the lower tape fixing part 15.

[0023] Figures 5 and 6 are perspective views showing the configuration around the lower clip 16. Note that the examples shown in Figures 5 and 6 show an example in which the lower tape fixing portion 15 is not provided. As shown in Figures 5 and 6, an insertion hole 11a is formed in the lower bracket 11. A lower clip 16 is inserted into the insertion hole 11a. The lower end of the lower clip 16 protrudes from the lower end of the lower bracket 11. A hook 16a is formed at the lower end of the lower clip 16. When the hook 16a abuts against the lower bracket 11, it is possible to restrict displacement of the detection body 2 in the contraction direction.

[0024] 5 and 6, a weight 22 is detachably attached to the hook 16a. As a result, the load of the weight 22 is applied to the detection body 2 via the lower clip 16, and tension can be applied to the detection body 2. The position at which the lower bracket 11 is fixed to the car-side guide rail 6 is set based on the state in which the detection body 2 is extended with the weight 22 hung on the lower clip 16.

[0025] 2. Vibration Suppression Member The detection body 2 may vibrate significantly due to earthquakes or wind within the hoistway 1. For this reason, the elevator 100 of this embodiment is provided with a member that suppresses the vibration of the detection body 2.

[0026] 2-1. First embodiment Next, the configuration of the vibration suppression member according to the first embodiment will be described with reference to Fig. 7 to Fig. 9. Fig. 7 is a perspective view showing the car 4 and the vibration suppression member according to the first embodiment. Fig. 8 is a plan view showing the vibration suppression member according to the first embodiment, and Fig. 9 is a front view showing the vibration suppression member according to the first embodiment.

[0027] As shown in Figure 7, vibration suppression members 31 and vibration-preventing brackets 42 are installed in the hoistway 1. The vibration-preventing brackets 42 are fixed to the car-side guide rails 6. The vibration-preventing brackets 42 protrude from the car-side guide rails 6 in a direction perpendicular to the direction in which the detection body 2 extends. A plurality of vibration-preventing brackets 42 are installed at predetermined height intervals in the hoistway 1.

[0028] 7 to 9, the vibration suppression member 31 is fixed to the vibration suppression bracket 42 via a fixing portion 43. The fixing portion 43 is fixed to the vibration suppression bracket 42 via a fixing screw 45. Note that the method for fixing the fixing portion 43 is not limited to the fixing screw 45, and various other fixing methods can be applied.

[0029] The vibration suppressing member 31 is disposed opposite the detection body 2. The vibration suppressing member 31 is formed, for example, from a magnet. Therefore, the vibration suppressing member 31 attracts the detection body 2 made of magnetic tape by magnetic force. This makes it possible to prevent the detection body 2 from shaking significantly due to earthquakes or wind, and also makes it possible to prevent the detection body 2 from getting caught on other members installed in the hoistway 1.

[0030] Furthermore, when the car 4 passes through the vibration suppression member 31, the position detector 10 peels the detection object 2 off from the vibration suppression member 31. After the car 4 passes through the vibration suppression member 31, the detection object 2 is again attracted to the vibration suppression member 31.

[0031] The vibration suppression member 31 can be in a variety of shapes, including round and square. In order to facilitate adsorption of the detection body 2, it is preferable that the vibration suppression member 31 have a shape that has a flat portion that adsorbs the detection body 2. Furthermore, the length of the vibration suppression member 31 in the width direction, which is the direction perpendicular to the direction in which the detection body 2 extends, is set to be longer than the length of the detection body 2 in the width direction. This allows the detection body 2 to be reliably adsorbed to the vibration suppression member 31.

[0032] In addition, the anti-sway bracket 42 is disposed to protrude from the car-side guide rail 6 in a direction perpendicular to the direction in which the detection body 2 extends. Therefore, even if the detection body 2 sways significantly and comes off the vibration suppression member 31, the anti-sway bracket 42 can prevent the detection body 2 from coming into contact with other members.

[0033] In addition, in this example, a magnet is used as the vibration suppression member 31, but this is not limited to this, and any magnetic material that can be attracted by magnetic force, such as other metals, may be used.

[0034] 2-2. Second Embodiment Next, the configuration of a vibration suppression member according to a second embodiment will be described with reference to Fig. 10. Note that parts common to the vibration suppression member 31 according to the first embodiment are given the same reference numerals, and duplicated explanations will be omitted. Fig. 10 is a front view showing the vibration suppression member according to the second embodiment.

[0035] 10, the vibration suppressing member 32 according to the second embodiment is formed of a longer member than the vibration suppressing member 31 according to the first embodiment. The vibration suppressing member 32 is disposed across a plurality (for example, two) of vibration-preventing brackets 42, 42 that are disposed at intervals along the lifting direction. By forming the vibration suppressing member 32 from a long member in this way, the vibration of the detection body 2 can be more firmly prevented.

[0036] In addition, the vibration suppression member 32 according to the second embodiment may be placed in the middle part of the elevator shaft 1 where the detection body 2 vibrates the most, and the vibration suppression member 31 according to the first embodiment may be placed in other locations.

[0037] The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made within the scope of the invention as set forth in the claims.

[0038] For example, the above-described embodiments have described the configurations of the devices and systems in detail and specifically in order to clearly explain the present invention, and are not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of the embodiments described here with the configuration of other embodiments, and it is also possible to add the configuration of one embodiment to the configuration of another embodiment. Furthermore, it is also possible to add, delete, or replace part of the configuration of one embodiment with other configurations.

[0039] The configuration of the elevator 100 is not limited to the 2:1 roping elevator shown in FIG. 1, but various other elevators such as a 1:1 roping elevator and a hydraulic elevator can also be applied.

[0040] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but also include "parallel" and "orthogonal" and may also mean a "substantially parallel" or "substantially orthogonal" state within a range in which the functions can be exerted.

[0041] DESCRIPTION OF SYMBOLS 1...hoistway, 1a...top, 1b...bottom, 2...detector, 3...hoisting machine, 4...car, 5...balance weight, 6, 7...car side guide rail, 8, 9...side guide rail, 10...position detector, 11...lower bracket, 12...upper bracket, 14...upper clip, 16...lower clip, 16a...hook, 21...spring, 22...weight, 31, 32...swing suppression member, 42...swing suppression bracket, 43...fixing part, 45...fixing screw, 100...elevator

Claims

1. An elevator comprising: a car that moves up and down in a hoistway; a detection body consisting of a magnetic tape extending from the top of the hoistway to the bottom; a position detector that is provided on the car and detects the position of the car by detecting the detection body; and a sway suppression member that is provided in the hoistway facing the detection body and consists of a magnetic material that attracts the detection body.

2. The elevator according to claim 1, wherein the vibration suppression member is a magnet.

3. The elevator according to claim 1, wherein the sway suppression member has a flat surface that adsorbs the detection object.

4. An elevator as described in claim 2, wherein the width of the sway suppression member in a direction perpendicular to the detection body is set longer than the width of the detection body.

5. An elevator as described in claim 1, further comprising an anti-sway bracket provided in the elevator shaft and extending in a direction perpendicular to the direction in which the detection body extends, and the anti-sway member is attached to the anti-sway bracket.

6. An elevator as described in claim 5, wherein the vibration suppression member is arranged across a plurality of the vibration prevention brackets arranged at intervals along the ascending / descending direction.