Hoistway-equipment mounting device for elevator

Abstract

To provide a hoistway-equipment mounting device for an elevator that is able to restrict a change in a position of hoistway equipment relative to a structure of a hoistway.SOLUTION: In a hoistway-equipment mounting device 4 for an elevator, a landing plate 12 is mounted on a mounting arm 41. By means of a holder 26, a guide rail 2 is held on a rail bracket 24 fixed to a wall 13 of a hoistway 1. An arm mounting tool 42 mounts the mounting arm 41 on the guide rail 2. A coupling body 43 couples the mounting arm 41 to the rail bracket 24. The holder 26 allows the guide rail 2 to slide in a vertical direction with respect to the rail bracket 24. The arm mounting tool 42 allows the mounting arm 41 to slide in a vertical direction with respect to the guide rail 2. The coupling body 43 keeps a vertical distance between the rail bracket 24 and the mounting arm 41.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to elevator hoistway equipment mountings. [Background technology]

[0002] Patent Document 1 discloses an elevator in which a floor landing detection plate is installed at each floor in the elevator shaft and a floor landing detector is attached to the car in order to land the car on each floor of a building. When the floor landing detector detects the floor landing detection plate corresponding to the car's destination floor, the car lands at the destination floor according to the position of the floor landing detection plate detected by the floor landing detector. Each floor landing detection plate is attached via a bracket to a guide rail that guides the car. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-195184 Summary of the Invention [Problem to be solved by the invention]

[0004] In an elevator, the positional relationship between the hoistway structure and the guide rail changes vertically over time. For example, whether the hoistway structure is rigid or flexible, inter-floor compression occurs in the building over time. When inter-floor compression occurs in the building, the positional relationship between the hoistway structure and the guide rail changes vertically. Furthermore, when the hoistway structure is flexible, the building may vibrate significantly due to wind pressure, long-period seismic motion, etc., which may cause the positional relationship between the hoistway structure and the guide rail to change vertically.

[0005] In the conventional elevator disclosed in Patent Document 1, each floor-landing detection plate is attached to the guide rail via a bracket. Therefore, if the positional relationship between the structure of the elevator shaft and the guide rail changes in the vertical direction, each floor-landing detection plate may interfere with fixed equipment in the elevator shaft. Furthermore, because the position of the floor-landing detection plate relative to the floor of the landing at each floor changes in the vertical direction, the position of the floor of the car when it arrives at the destination floor will be shifted in the vertical direction from the position of the floor of the landing at the destination floor.

[0006] The present disclosure is intended to solve the above-mentioned problems, and aims to provide an elevator shaft equipment mounting device that can suppress changes in the position of the shaft equipment relative to the shaft structure. [Means for solving the problem]

[0007] The elevator hoistway equipment mounting device according to the present disclosure comprises a mounting arm to which hoistway equipment is attached, an arm mounting fixture that mounts the mounting arm to a guide rail that is held by a holder on a rail bracket that is fixed to a structure of the hoistway, and a connector that connects the mounting arm to the rail bracket, wherein the holder allows the guide rail to slide vertically relative to the rail bracket, the arm mounting fixture allows the mounting arm to slide vertically relative to the guide rail, and the connector keeps the vertical distance between the rail bracket and the mounting arm constant. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to suppress changes in the position of hoistway equipment relative to the structure of the hoistway. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram showing an elevator according to a first embodiment of the present invention; [Figure 2] FIG. 2 is a front view showing the elevator shaft equipment mounting device of FIG. 1. [Figure 3]FIG. 10 is a front view showing an elevator shaft equipment mounting device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The following describes embodiments of the subject matter of the present disclosure with reference to the accompanying drawings. In each drawing, identical or corresponding parts are designated by the same reference numerals, and redundant explanations are appropriately simplified or omitted. Note that the subject matter of the present disclosure is not limited to the following embodiments, and any component of the embodiments may be modified or omitted within the scope of the gist of the present disclosure.

[0011] Embodiment 1 FIG. 1 is a schematic diagram showing an elevator according to a first embodiment. In the figure, a pair of guide rails 2 are arranged vertically in a hoistway 1 provided in a building. In this embodiment, the pair of guide rails 2 are placed on the bottom of the hoistway 1 and are arranged in the hoistway 1. A car 3 moves vertically in the hoistway 1 while being guided by each of the pair of guide rails 2 by the driving force of a drive device (not shown). In this embodiment, a hoisting machine is installed in the hoistway 1 as the driving device, and a rope (not shown) that suspends the car 3 is wound around a drive sheave of the hoisting machine. As a result, in this embodiment, the drive sheave rotates due to the driving force of the hoisting machine, causing the car 3 to move vertically.

[0012] The drive device is controlled by a control device (not shown). The control device controls the drive device, so that the car 3 can land on each of multiple floors in the building. At each floor, the position at which the car 3 lands, i.e., the landing position of the car 3, is set based on the height FL of the landing floor. When the car 3 lands on one of the floors, i.e., when the car 3 is stopped at one of the landing positions on one of the floors, the height of the floor surface 31 of the car 3 matches the height FL of the landing floor at the floor at which the car 3 lands.

[0013] The car 3 is provided with a floor landing detector 11. In this embodiment, the car 3 is provided with the floor landing detector 11 on its side surface.

[0014] In the hoistway 1, a plurality of landing plates 12 are arranged at intervals in the vertical direction as hoistway equipment. The landing plates 12 are individually arranged in the hoistway 1 corresponding to the landing position of the car 3 on each floor. Each landing plate 12 is arranged along the vertical direction. When the car 3 is landed on one of the floors, the landing detector 11 faces the landing plate 12 corresponding to the floor on which the car 3 is landed.

[0015] The landing detector 11 detects the landing plate 12 when it faces the landing plate 12. When the landing detector 11 detects the landing plate 12, it generates a detection signal corresponding to the detected landing plate 12. When the control device receives the detection signal from the landing detector 11, it identifies the landing position corresponding to the landing plate 12 based on the detection signal generated by the landing detector 11. The control device controls the drive device to stop the car 3 at the identified landing position. As a result, the car 3 lands at the destination floor by aligning the height of the floor surface 31 of the car 3 with the height FL of the floor surface of the hall at the destination floor.

[0016] Each guide rail 2 has a plurality of rail members 21. In each guide rail 2, the plurality of rail members 21 are joined together in the vertical direction. Each guide rail 2 is held by a plurality of rail receivers 22 fixed to the elevator shaft 1. The plurality of rail receivers 22 are arranged at intervals from one another in the vertical direction. In this embodiment, the number of rail receivers 22 that hold one rail member 21 in each guide rail 2 is two.

[0017] A plurality of hoistway equipment mounting devices 4 are attached to one of the guide rails 2. A landing plate 12 is individually attached to each hoistway equipment mounting device 4. That is, each landing plate 12 is individually attached to one of the guide rails 2 via a hoistway equipment mounting device 4. Each hoistway equipment mounting device 4 is connected to a rail support 22 selected from the plurality of rail supports 22 in accordance with the position of each landing plate 12.

[0018] Fig. 2 is a front view showing the hoistway equipment mounting device 4 of Fig. 1. Each rail receiver 22 has a fixing bracket 23 and a rail bracket 24.

[0019] The fixing bracket 23 is fixed to the wall 13 of the hoistway 1. The wall 13 of the hoistway 1 is a structural member of the hoistway 1. In this embodiment, the fixing bracket 23 is fixed to the wall 13 of the hoistway 1 by a plurality of anchor bolts 25.

[0020] The rail bracket 24 is fixed to the fixed bracket 23. Therefore, the rail bracket 24 is fixed to the wall 13 of the hoistway 1 via the fixed bracket 23. In this embodiment, the rail bracket 24 is fixed to the fixed bracket 23 by welding.

[0021] In each rail receiving body 22, a rail bracket 24 receives the guide rail 2. In each rail receiving body 22, the guide rail 2 is held to the rail bracket 24 by a holder 26.

[0022] The retainer 26 has a pair of rail clips 261 and a pair of fasteners 262. Each rail clip 261 is individually attached to the rail bracket 24 by a respective fastener 262. Each fastener 262 has a bolt and a nut. The guide rail 2 is sandwiched between each rail clip 261 and the rail bracket 24. Each rail clip 261 individually presses the guide rail 2 against the rail bracket 24 by the tightening force of each fastener 262. In this way, the retainer 26 holds the guide rail 2 to the rail bracket 24.

[0023] Here, the vertical dimensions of a building change over time due to factors such as floor compression. Floor compression is a phenomenon in which the distance between the floor surfaces of landings on each floor of a building shrinks in the vertical direction. When the vertical dimensions of the building change, the dimensions of the wall 13 formed as a structural part of the elevator shaft 1 also change in the vertical direction in accordance with the change in the dimensions of the building.

[0024] Because each rail support 22 is fixed to the wall 13 of the elevator shaft 1, the position of each rail support 22 changes in accordance with changes in the position of the floor surface of the landing on each floor. Therefore, the positional relationship between each rail support 22 and the floor surface of the landing on each floor is unlikely to change even if the dimensions of the building change.

[0025] In contrast, the dimensions of each guide rail 2 do not change even if the dimensions of the building change. Therefore, if the dimensions of the building change in the vertical direction, the positional relationship between each guide rail 2 and the floor surface of the landing on each floor also changes in the vertical direction.

[0026] Furthermore, when the dimensions of the building change in the vertical direction, the positional relationship between each guide rail 2 and each rail receiver 22 also changes in the vertical direction. Therefore, an external force that tries to slide the rail bracket 24 in the vertical direction relative to the guide rail 2 is applied to each rail receiver 22. When the external force in the vertical direction applied to the rail receiver 22 becomes greater than the holding force of the holder 26 that holds the guide rail 2 to the rail bracket 24, the holder 26 allows the guide rail 2 to slide in the vertical direction relative to the rail bracket 24.

[0027] Each elevator shaft equipment mounting device 4 has a mounting arm 41 , an arm mounting fixture 42 , and a connector 43 .

[0028] The mounting arm 41 is attached to the guide rail 2. In this embodiment, the mounting arm 41 is located lower than the rail bracket 24. The mounting arm 41 is disposed horizontally. The length of the mounting arm 41 is longer than the length of the rail bracket 24.

[0029] The landing plate 12 is attached to the mounting arm 41. The landing plate 12 is disposed at a position separated from one of the guide rails 2. In this embodiment, the landing plate 12 is attached to the mounting arm 41 by a plurality of bolts 44.

[0030] The arm attachment 42 attaches the attachment arm 41 to the guide rail 2. The arm attachment 42 has a pair of sliding clips 421 and a pair of fasteners 422.

[0031] Each sliding clip 421 is individually attached to the mounting arm 41 by a respective fastener 422. Each fastener 422 has a bolt and a nut. The guide rail 2 is sandwiched between each sliding clip 421 and the mounting arm 41. Each sliding clip 421 individually presses the mounting arm 41 against the guide rail 2 by the tightening force of each fastener 422. In this way, the arm mounting fixture 42 attaches the mounting arm 41 to the guide rail 2.

[0032] In this embodiment, the attachment force of the arm attachment tool 42 that attaches the attachment arm 41 to the guide rail 2 is smaller than the holding force of the holder 26 that holds the guide rail 2 to the rail bracket 24. The arm attachment tool 42 allows the attachment arm 41 to slide up and down relative to the guide rail 2. The attachment arm 41 can slide up and down relative to the guide rail 2 with a force that is smaller than the holding force of the holder 26.

[0033] The connector 43 connects the mounting arm 41 to the rail bracket 24. As a result, the connector 43 extends downward from the rail bracket 24. The connector 43 is attached to the rail bracket 24 by a first fastener 431. The connector 43 is attached to the mounting arm 41 by a second fastener 432. The connector 43 is arranged along the up-down direction. As a result, the mounting arm 41 is supported by the rail bracket 24 via the connector 43.

[0034] Each of the first fastener 431 and the second fastener 432 has a bolt and a nut. The first fastener 431 is located at the end of the rail bracket 24. The second fastener 432 is located between the guide rail 2 and the landing plate 12.

[0035] The connector 43 is a rigid body. In this embodiment, a steel plate is used as the connector 43. This prevents the connector 43 from deforming when subjected to either a tensile load or a compressive load. Therefore, the connector 43 maintains a constant distance between the rail bracket 24 and the mounting arm 41.

[0036] In this embodiment, the attachment force of the arm attachment tool 42 that attaches the attachment arm 41 to the guide rail 2 is smaller than the force required to support the total weight of the attachment arm 41 and the landing plate 12. As a result, when the attachment arm 41 is detached from the connecting body 43, the arm attachment tool 42 cannot support the total weight of the attachment arm 41 and the landing plate 12, and the attachment arm 41 slides downward on the guide rail 2 together with the landing plate 12.

[0037] Next, we will explain the operation of the elevator shaft equipment mounting device 4 when the dimensions of the building change over time due to floor-to-floor compression. When the dimensions of the building change over time due to floor-to-floor compression, the distance between the floor surfaces of the landings on each floor decreases over time. In this case, the dimensions of the wall 13 of the elevator shaft 1 change in accordance with the change in the distance between the floor surfaces of the landings on each floor, and the distance between the multiple rail receivers 22 changes in accordance with the change in the dimensions of the wall 13 of the elevator shaft 1. Therefore, when the dimensions of the building change over time due to floor-to-floor compression, the positional relationship between each rail receiver 22 and the floor surface of the landing on each floor is maintained.

[0038] On the other hand, even if the dimensions of the building change over time due to compression between floors, the dimensions of each guide rail 2 do not change. Therefore, if the dimensions of the building change over time due to compression between floors, the dimensions of the wall 13 of the elevator shaft 1 change in the vertical direction, and the position of each rail receiver 22 relative to each guide rail 2 changes in the vertical direction. This causes the rail bracket 24 to slide relative to the guide rail 2 against the holding force of each holder 26.

[0039] At this time, in each hoistway equipment mounting device 4, the mounting arm 41 slides along the guide rail 2 together with the landing plate 12 while following the rail bracket 24. When the mounting arm 41 follows the rail bracket 24, the distance between the rail bracket 24 and the mounting arm 41 is kept constant by the connector 43. This causes the position of each landing plate 12 to change in accordance with changes in the dimensions of the wall 13 of the hoistway 1. Therefore, changes in the position of each landing plate 12 relative to the wall 13 of the hoistway 1 are suppressed, and changes in the position of each landing plate 12 relative to the floor surface of the landing on each floor are suppressed.

[0040] In this elevator shaft equipment mounting device 4, an arm mounting fixture 42 mounts an attachment arm 41 to the guide rail 2. A landing plate 12 is attached to the attachment arm 41. The arm mounting fixture 42 allows the attachment arm 41 to slide vertically relative to the guide rail 2. A connector 43 connects the attachment arm 41 to the rail bracket 24. The connector 43 maintains a constant distance between the rail bracket 24 and the attachment arm 41. Therefore, even if the positional relationship between the wall 13 of the elevator shaft 1 and the guide rail 2 changes vertically due to, for example, inter-floor compression, the position of the landing plate 12 can follow the change in position of the rail bracket 24 fixed to the wall 13 of the elevator shaft 1. This makes it possible to suppress change in the position of the landing plate 12 relative to the wall 13 of the elevator shaft 1. Therefore, it is possible to suppress interference between the landing plate 12 and fixed equipment in the elevator shaft 1. Furthermore, the positional relationship between the landing plate 12 and the floor surface of the landing hall at each floor can be maintained, making it difficult for the position of the floor surface of the car 3 to deviate from the position of the floor surface of the landing hall when the car 3 lands on each floor. This reduces the burden of, for example, repairing a landing plate 12 that has been damaged due to interference with fixed equipment, or adjusting the position of each landing plate 12.

[0041] Furthermore, the mounting arm 41 is positioned lower than the rail bracket 24. Therefore, a tensile load can be applied to the connector 43 by the weight of the mounting arm 41. This makes it easier to maintain a constant distance between the rail bracket 24 and the mounting arm 41 by the connector 43. Furthermore, even if it is difficult to position the mounting arm 41 higher than the rail bracket 24, such as when other equipment arranged in the hoistway 1 is installed higher than the rail bracket 24, the mounting arm 41 can be easily positioned in the hoistway 1.

[0042] Furthermore, each landing plate 12 is an elevator shaft device arranged corresponding to the landing position of the car 3 at a floor where the car 3 can land. The car 3 is provided with a landing detector 11. The landing detector 11 detects the landing plate 12 when facing the landing plate 12 and generates a detection signal corresponding to the detected landing plate 12. Therefore, even if the positional relationship between the wall 13 of the elevator shaft 1 and the guide rail 2 changes in the vertical direction, the landing position of the car 3 can be detected more accurately. This makes it possible to prevent the position of the floor surface 31 of the car 3 from deviating from the position of the floor surface of the hall when the car 3 lands at each floor.

[0043] In the first embodiment, the connector 43 is a rigid body. However, the connector 43 does not have to be a rigid body. For example, a wire rod, a wire rope, or the like may be used as the connector 43. In this case, the mounting arm 41 is suspended from the rail bracket 24 via the connector 43, which does not expand or contract. This causes a tensile load to be constantly applied to the connector 43. Even in this case, the connector 43 can maintain a constant distance between the rail bracket 24 and the mounting arm 41.

[0044] Embodiment 2 Fig. 3 is a front view showing an elevator shaft equipment mounting device according to embodiment 2. Fig. 3 is a view corresponding to Fig. 2 of embodiment 1. In this embodiment, in each elevator shaft equipment mounting device 4, the mounting arm 41 is positioned above the rail bracket 24. As a result, the connector 43 extends upward from the rail bracket 24. The first fastener 431 that mounts the connector 43 to the rail bracket 24 is positioned below the second fastener 432 that mounts the connector 43 to the mounting arm 41.

[0045] The connector 43 is a rigid body. This maintains a constant distance between the rail bracket 24 and the mounting arm 41. In this embodiment, a steel plate is used as the connector 43. In this embodiment, it is possible that a compressive load will be applied to the connector 43 in a direction that brings the rail bracket 24 and the mounting arm 41 closer to each other. Therefore, in this embodiment, a wire rod, wire rope, or the like that would deform when subjected to a compressive load is not used as the connector 43. The other configurations and operations are the same as those in the first embodiment.

[0046] In this type of elevator shaft equipment mounting device 4, the mounting arm 41 is positioned above the rail bracket 24. Even in this manner, the position of the landing plate 12 can be made to follow changes in the position of the rail bracket 24 fixed to the wall 13 of the elevator shaft 1. This makes it possible to suppress changes in the position of the landing plate 12 relative to the wall 13 of the elevator shaft 1. Furthermore, even in cases where it is difficult to position the mounting arm 41 below the rail bracket 24, such as when other equipment arranged in the elevator shaft 1 is installed below the rail bracket 24, the mounting arm 41 can be easily positioned in the elevator shaft 1.

[0047] In each of the above embodiments, the mounting force of arm mounting fixture 42 is smaller than the holding force of holder 26. However, the mounting force of arm mounting fixture 42 may be the same as the holding force of holder 26, or may be larger than the holding force of holder 26. Even in this case, the position of landing plate 12 can be made to follow changes in the position of rail bracket 24 fixed to wall 13 of hoistway 1, and changes in the position of landing plate 12 relative to wall 13 of hoistway 1 can be suppressed.

[0048] Furthermore, in each of the above embodiments, the elevator shaft equipment attached to the mounting arm 41 is the landing plate 12. However, the elevator shaft equipment attached to the mounting arm 41 is not limited to the landing plate 12. Therefore, a control device that controls elevator operation, a limit switch that detects when the car 3 has passed the terminal floor, and the like may also be attached to the mounting arm 41 as elevator shaft equipment.

[0049] In addition, in each of the above-described embodiments, the rail bracket 24 is fixed to the wall 13, which is a structural member of the hoistway 1, via the fixing bracket 23. However, the rail bracket 24 may also be fixed to a beam, which is a structural member of the hoistway 1 and is exposed to the hoistway 1, via a plate.

[0050] Furthermore, in each of the above-described embodiments, each guide rail 2 is placed in the hoistway 1 while resting on the bottom of the hoistway 1. However, each guide rail 2 may be placed in the hoistway 1 with a space between the lower end of each guide rail 2 and the bottom of the hoistway 1. In this case, the weight of each guide rail 2 is held by the rail bracket 24 of each rail receiver 22 by the holding force of each holder 26. Even in this case, the positional relationship between the wall 13 of the hoistway 1 and the guide rail 2 changes vertically over time. Therefore, by using the hoistway equipment mounting device 4, it is possible to suppress changes in the position of the landing plate 12 relative to the wall 13 of the hoistway 1.

[0051] In addition, in each of the above embodiments, an elevator shaft equipment mounting device 4 according to embodiment 1 in which the mounting arm 41 is positioned below the rail bracket 24 and an elevator shaft equipment mounting device 4 according to embodiment 2 in which the mounting arm 41 is positioned above the rail bracket 24 may be mixed in the elevator shaft 1.

[0052] The configurations described in the above embodiments are merely examples of the contents of the present disclosure. The embodiments can be combined with other known technologies. Part of the configuration of the embodiments can be omitted or modified without departing from the gist of the present disclosure. [Explanation of symbols]

[0053] 1 Hoistway, 3 Cage, 11 Landing detector, 12 Landing plate (hoistway equipment), 13 Wall (structure), 24 Rail bracket, 26 Holder, 41 Mounting arm, 42 Arm mounting fixture, 43 Connector.

Claims

1. a mounting arm to which the hoistway equipment is attached; an arm attachment for attaching the attachment arm to a guide rail that is held by a holder on a rail bracket that is fixed to a structure of the elevator shaft; a connector that connects the mounting arm to the rail bracket; Equipped with the holder allows the guide rail to slide vertically relative to the rail bracket; the arm attachment device allows the attachment arm to slide up and down relative to the guide rail; The connecting body is an elevator shaft equipment mounting device that maintains a constant vertical distance between the rail bracket and the mounting arm.

2. 2. The elevator shaft equipment mounting device according to claim 1, wherein the mounting arm is positioned below the rail bracket.

3. 2. The elevator shaft equipment mounting device according to claim 1, wherein the mounting arm is positioned above the rail bracket.

4. the elevator shaft equipment is a landing plate that is arranged in the elevator shaft corresponding to a landing position of the car at a floor at which the car can land, The cage is provided with a landing detector, 4. The elevator shaft equipment mounting device according to claim 1, wherein the floor landing detector detects the floor landing plate when facing the floor landing plate and generates a detection signal corresponding to the detected floor landing plate.

Images