elevator

Abstract

An elevator (10) comprises: detection devices (35, 39) which are attached to one or more hoistway devices (13, 18a) the distance from which to a car (11) in the height direction changes as the car (11) moves; and a control board (19) that receives information from the detection devices (35, 39). The detection devices (35, 39) can detect a physical quantity whereby it is possible to identify a car deceleration start state where at least a part of a person is within a predetermined region lower than the hoistway device (13, 18a) to which the detection devices (35, 39) are attached. The control board (19) performs control to decelerate the movement speed of the car (11) in response to receiving information that is based on the physical quantity corresponding to the car deceleration start state detected by at least one detection device (35, 39).

Description

Technical Field

[0001] This disclosure relates to an elevator.

Background Art

[0002] Conventionally, there is an elevator described in Patent Document 1. This elevator includes a guide plate (landing plate) and a landing sensor. The guide plate is installed in the hoistway, while the landing sensor is installed in the car. This elevator identifies the landing position of the car by the landing sensor detecting the guide plate.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When a maintenance worker is performing maintenance on hoistway equipment installed in the hoistway of an elevator, the worker may be so focused on looking for things that are not visible to the human eye, such as abnormal noises, that it is difficult to notice other hoistway equipment approaching from above. In such a background, if it is possible to make it difficult for the maintenance worker to approach other hoistway equipment even when the maintenance worker is concentrating on the maintenance of the hoistway equipment, not only can the safety of the maintenance worker be significantly improved, but an environment where the maintenance worker can concentrate on maintenance can be realized, and high - quality maintenance can be efficiently performed. Therefore, an object of this disclosure is to provide an elevator that makes it difficult for a maintenance worker to approach hoistway equipment and can improve the safety of the maintenance worker.

Means for Solving the Problems

[0005] To solve the above problems, the elevator according to this disclosure comprises one or more hoistway devices arranged in a hoistway, the height distance from the car fluctuates as the car moves, a detection device attached to the hoistway device, and a control device that receives information from the detection device, wherein the detection device is capable of detecting a physical quantity that can identify a car deceleration start state in which at least a part of a person has entered a predetermined area below the hoistway device to which it is attached, and the control device, upon receiving information based on the physical quantity corresponding to the car deceleration start state detected by at least one of the detection devices, performs control to decelerate the moving speed of the car.

[0006] The aforementioned lower predetermined area may, for example, be the detection area of ​​a detection device attached to the lower side of the elevator shaft equipment, or it may be the area within the detection area of ​​the detection device attached to the lower side of the elevator shaft equipment where the height distance downward from the lower end of the elevator shaft equipment is less than or equal to a predetermined distance. Alternatively, the aforementioned lower predetermined area may be an area that satisfies the conditions that include all areas where the horizontal distance between a person (maintenance worker) and the elevator shaft equipment is less than or equal to a first predetermined distance, and does not include all areas where the horizontal distance between a person and the elevator shaft equipment is greater than or equal to a second predetermined distance (> first predetermined area), and that the height distance downward from the lower end of the elevator shaft equipment is less than or equal to a predetermined distance.

[0007] According to this disclosure, when the elevator car deceleration starts with at least a portion of a person inside a predetermined area below the elevator shaft equipment, the elevator car's speed decreases. Therefore, by setting (or aligning) the predetermined area below the elevator shaft equipment with the area where a person is likely to come into close proximity to the equipment, it is possible to suppress people from coming into close proximity to the equipment and to enhance human safety.

[0008] Furthermore, the predetermined region may include a region where the distance in the height direction from the lower end of the elevator shaft equipment downwards is less than or equal to the predetermined distance, and which overlaps with the elevator shaft equipment in the height direction.

[0009] With this configuration, the elevator car will always slow down when a person is likely to come into close proximity to the elevator shaft equipment. Therefore, pedestrian safety can be further enhanced. In addition, because a high level of pedestrian safety is guaranteed, maintenance can now be performed to check even the smallest details that could not be checked with current maintenance methods, enabling more thorough maintenance. Furthermore, because even small details that could not be checked before can be checked, the points noticed during maintenance can be utilized in the design of new elevators, leading to a reduction in malfunctions in new elevators. In addition, maintenance can be performed quickly and efficiently, reducing the burden on personnel.

[0010] Furthermore, one or more of the detection devices may include at least one of a first detection device attached to a counterweight and a second detection device attached to a guide plate.

[0011] The guide board and counterweight are relatively close horizontally to the cage, making them easily accessible to people performing maintenance work on the cage. Additionally, the counterweight may come into close proximity to people working in the pit.

[0012] According to the above configuration, proximity between elevator equipment and people can be effectively suppressed.

[0013] Furthermore, the one or more elevator components may include the counterweight with a spacer provided on its lower side, and the first detection device may be attached to the spacer.

[0014] With this configuration, the first detection device can be easily fixed to the counterweight using a spacer.

[0015] Furthermore, the first detection device may be mountable on both one side of the spacer in the width direction and the other side of the spacer in the width direction.

[0016] If an object is located in a position that interferes with the light or radio waves emitted by the first detection device to detect a person, false detections are likely to occur.

[0017] With this configuration, the first detection device can be attached to both one and the other side in the width direction of the spacer, so that the first detection device can be fixed to the side that is less likely to cause false detections based on the arrangement of objects in the hoistway for each elevator specification. Therefore, it is easier to detect people with high accuracy.

[0018] Furthermore, the detection device may be detachably attached to the elevator shaft equipment, and the detection device and the control device may communicate wirelessly.

[0019] If the detection device is permanently installed and built-in, there is a risk that malfunctions may disrupt normal operation. Furthermore, if the detection device is permanently installed, the running costs will also be higher.

[0020] With this configuration, the detection device can be attached to and detached from the hoistway equipment, so the detection device can be installed in the hoistway only when performing maintenance and inspections. Therefore, malfunctions of the detection device will not disrupt normal operation, and the running costs of the elevator can be reduced. In addition, since the detection device and the control device communicate wirelessly, the mounting position of the detection device can be greatly expanded. As a result, detection can be performed with high accuracy, and the detection device can be easily installed.

[0021] Furthermore, the control device may stop the cage when it receives information based on the physical quantity corresponding to the cage deceleration start state detected by at least one of the detection devices.

[0022] The above configuration can further enhance human safety.

[0023] Furthermore, the control device may determine whether or not to reduce the movement speed of the elevator car only when the elevator car is in a maintenance mode where it does not move based on a destination floor selection button provided inside the elevator car.

[0024] According to this configuration, during normal operation when not in the maintenance inspection mode, the cage deceleration control of the present disclosure is not performed. Therefore, it is possible to prevent the cage deceleration control from being accidentally activated during normal operation.

[0025] Further, the control device can identify, based on the physical quantity, that the distance in the height direction is equal to or less than a second predetermined distance which is equal to or less than the predetermined distance, and includes a sound output device. When it is determined that at least a part of the person has entered an area included in the predetermined area and the distance in the height direction is equal to or less than the second predetermined distance, the control device may cause the sound output device to output a sound.

[0026] According to this configuration, for example, after the distance in the height direction from the lower end of the hoistway equipment to a person existing below it becomes equal to or less than the second predetermined distance, if at least a part of the person enters the above-mentioned predetermined area, or when the cage deceleration start state is reached and the cage deceleration has started and the state where at least a part of the person continues to enter the above-mentioned predetermined area continues, the sound output device can output a warning sound, or a statement informing that it is about to be close to the overhead hoistway equipment, for example, "Please avoid the overhead hoistway equipment." or "Please immediately retract your head and hands." etc. Therefore, the safety of the person can be ensured. In this case, the second predetermined distance may be the same as the predetermined distance or less than the predetermined distance.

[0027] Further, the control device can identify, based on the physical quantity, that the distance in the height direction is equal to or less than a third predetermined distance which is longer than the predetermined distance, and includes a sound output device. When the control device determines that at least a part of the person has entered a second predetermined area including an area that overlaps the hoistway equipment in the height direction within a height direction range where the distance in the height direction is longer than the predetermined distance and equal to or less than the third predetermined distance, the control device may cause the sound output device to output a statement meaning to pay attention to the overhead hoistway equipment.

[0028] Examples of wording that would indicate caution regarding overhead hoistway equipment include, "Please be careful of overhead hoistway equipment," or "If you continue like this, you will come into contact with the hoistway equipment."

[0029] This configuration further enhances human safety. Furthermore, it reduces the need for frequent cage deceleration control, improving the efficiency of maintenance and inspection work.

[0030] Furthermore, the sound output device may be configured integrally with the detection device.

[0031] This configuration allows for the simultaneous installation of the detection device and the sound output device. Therefore, convenience and ease of handling can be improved. Furthermore, since the sound output device is positioned near the detection device, it can emit a warning sound to people from near the elevator shaft equipment, which is the object that attracts attention when people are nearby. Thus, warning sounds can be effectively and reliably conveyed to people, significantly improving human safety. [Effects of the Invention]

[0032] According to the elevator described in this disclosure, it is difficult for people (maintenance workers) to come into close proximity to the hoistway equipment, thereby increasing human safety. [Brief explanation of the drawing]

[0033] [Figure 1] This is a schematic diagram of an elevator according to one embodiment of the present disclosure. [Figure 2] This is a front view of the counterweight. [Figure 3] This diagram illustrates the fixing of the first integration device to the counterweight. [Figure 4] This diagram illustrates the fixing of the first integration device to the counterweight. [Figure 5] This diagram illustrates the fixing of the second integrated device to the guide plate. [Figure 6] This diagram illustrates the fixing of the second integrated device to the guide plate. [Figure 7]This is a schematic diagram illustrating the situation in which the first detection device detects a person, and also a schematic diagram illustrating the transmission of signals from the first detection device to the control panel. [Figure 8] This is a schematic diagram illustrating the situation in which the second detection device detects a person, and also a schematic diagram illustrating the transmission of signals from the second detection device to the control panel. [Figure 9] This is an example flowchart illustrating an example of control implemented in an elevator control panel to enhance pedestrian safety by making it difficult for people to approach the counterweight. [Figure 10] This is a schematic diagram corresponding to Figure 1 in a modified elevator. [Figure 11] This is a schematic diagram corresponding to Figure 7 in the modified elevator. [Figure 12] This is a schematic diagram corresponding to Figure 8 in the modified elevator. [Figure 13] This is an example flowchart illustrating an example of control implemented in a modified elevator control panel to enhance human safety by making it difficult for people to approach the counterweight. [Modes for carrying out the invention]

[0034] The embodiments relating to this disclosure will be described in detail below with reference to the attached drawings. Note that if multiple embodiments or modifications are included below, it is intended from the outset that new embodiments may be constructed by appropriately combining their characteristic features. Furthermore, in the following embodiments, the same reference numerals are used for the same components in the drawings, and redundant explanations are omitted. Also, multiple drawings include schematic diagrams, and the dimensional ratios such as length, width, and height of each component do not necessarily match between different drawings. In the following description and drawings, the X direction is the depth direction of the elevator car 11 of the elevator 10, the Y direction is the width direction of the car 11, and the Z direction is the height direction of the car 11. The X, Y, and Z directions are orthogonal to each other. Furthermore, among the components described below, components not described in the independent claim representing the highest-level concept are optional components and not essential components.

[0035] Figure 1 is a schematic diagram of an elevator 10 according to one embodiment of the present disclosure. As shown in Figure 1, the elevator 10 comprises a car 11, a hoisting machine 12, a counterweight 13, a wire rope 14, a car call button 15, a destination floor selection button 16, a landing position detection sensor 18, and a control panel 19 as a control device. The control panel 19 and the hoisting machine 12 are located in a machine room 30 above the hoistway 20. If the elevator does not have a machine room, the control panel and the hoisting machine are located, for example, in a pit below the hoistway. The wire rope 14 is wound around the hoisting machine 12, with one end fixed to the top of the car 11, while the other end is fixed to the counterweight 13 via a deflection wheel (not shown). The car call button 15 is used to call the car 11 and to specify the direction of movement of the car 11, and is provided at the landings 22 on all floors. Additionally, the destination floor selection button 16 is provided inside the elevator car 11 to specify the destination floor of the elevator car 11.

[0036] The control panel 19 includes a computer, such as a microcomputer, and comprises a control unit and a memory unit. The control unit, i.e., the processor, includes, for example, a CPU (Central Processing Unit). The memory unit is composed of a hard disk drive (HDD), a solid-state drive (SSD), etc., and may include non-volatile memory such as ROM (Read Only Memory) and volatile memory such as RAM (Random Access Memory). The memory unit may consist of only one storage medium or multiple different storage mediums. The CPU reads and executes control programs, etc., that are pre-stored in the memory unit. The non-volatile memory pre-stores control programs, predetermined thresholds, etc. The volatile memory temporarily stores the read control programs and processing data, etc.

[0037] The elevator car 11 and the counterweight 13 are each guided by guide rails installed in the elevator shaft 20. The control panel 19, which receives signals from the elevator car call button 15 and the destination floor selection button 16, appropriately controls the rotation speed and direction of the hoisting machine motor 12a of the hoisting machine 12, causing the elevator car 11 to move up and down in the elevator shaft 20. The landing position detection sensor 18 detects the landing position of the landing 22 where the elevator car 11 will land. The landing position detection sensor 18 includes, for example, a metal (e.g., made of iron) guide plate 18a installed at a height position in the elevator shaft 20 that allows the elevator car 11 to stop at the landing position of each floor, and a magnetic detector 18b installed on the elevator car 11 that detects the guide plate 18a. The detector 18b detects the guide plate 18a. Upon receiving a signal from the detector 18b indicating that it has detected the guide plate 18a, the control panel 19 controls the hoisting motor 12a, causing the elevator car 11 to land on the floor where a stop command was input. Subsequently, the control panel 19 controls a motor for the elevator car door (not shown), causing the elevator car door 32 to open, and in conjunction with this, the landing door 31 also opens, allowing people to board and alight from the elevator car 11.

[0038] The elevator 10 further includes one first detection device 35, one first sound output device 46, one first wireless communication device 51, a plurality of second detection devices 39, a plurality of second sound output devices 47, and a plurality of second wireless communication devices 52. One first detection device 35, one first sound output device 46, and one first wireless communication device 51 are integrated together to form a first integrated device 55. Similarly, one second detection device 39, one second sound output device 47, and one second wireless communication device 52 are also integrated together to form a second integrated device 56. The number of second integrated devices 56 corresponds to the number of guide boards 18a provided to correspond to each floor. The first integrated devices 55 and the second integrated devices 56 are integrated using one or more integrating means, such as fastening means, adhesives, and welds.

[0039] The first integrated device 55 is fixed to a counterweight 13, which is an example of elevator equipment, using a detachable structure. Figure 2 is a front view of the counterweight 13, and Figures 3 and 4 illustrate the fixing of the first integrated device 55 to the counterweight 13. As shown in Figure 2, the counterweight 13 includes a frame 13b that fixes the wire rope 14 and houses a plurality of rod-shaped weights 13a, and a spacer 13c located below the frame 13b. The spacer 13c protrudes downward from the center in the Y direction of the lower frame portion 13d of the frame 13b. As shown in Figures 3 and 4, the first integrated device 55 is actually installed on only one side in the width direction (coinciding with the Y direction), but it can be attached to both one side and the other side in the width direction of the spacer 13c. Therefore, the first detection device 35 included in the first integration device 55 can also be attached to both one side of the spacer 13c in the width direction and the other side of the spacer 13c in the width direction.

[0040] More specifically, the spacer 13c is provided with a first threaded hole (not shown) with a bottom extending in the Y direction on a first side in the Y direction, and a second threaded hole (not shown) with a bottom extending in the Y direction on a second side in the Y direction. The first threaded hole is identical to the second threaded hole. A male thread (not shown) of a rod-shaped member 60, which has a small-diameter rod-shaped portion (not shown) with a male thread (not shown) at its tip, can be screwed into each threaded hole. As shown in Figures 3 and 4, the rod-shaped member 60 extends in the Y direction when the male thread is screwed into the threaded hole of the spacer 13c and fixed to the spacer 13c. The rod-shaped member 60 has one or more threaded holes extending in the Y direction on its outer side surface in the Y direction. The first integrating device 55 also has one or more threaded holes extending in the Y direction and penetrating the first integrating device 55 at its upper end. The male thread of a bolt (threaded member) not shown is tightened into the threaded hole of the first integrating device 55, and then tightened into the bottomed threaded hole of the rod-shaped member 60, thereby fixing the first integrating device 55 to the rod-shaped member 60 using one or more bolts. The first integrating device may have a permanent magnet, and the first integrating device may be fixed to the spacer 13c using a permanent magnet or clip, or fixed to the rod-shaped member attached to the spacer 13c using a permanent magnet or clip.

[0041] On the other hand, multiple second integration devices 56 are fixed one by one to multiple guide boards 18a, which are provided to correspond to each floor, using a detachable structure. Guide boards 18a are an example of elevator shaft equipment. Figures 5 and 6 illustrate the fixing of the second integration devices 56 to the guide boards 18a. As shown in Figures 5 and 6, each guide board 18a is installed within a predetermined height range in the elevator shaft 20. Each guide board 18a has multiple through holes (elongated holes in this embodiment) 63 spaced apart in the Z direction for attaching it to the elevator shaft 20. The second integration device 56 also has one or more bottomed screw holes (not shown). The second integration device 56 is fixed to the guide board 18a using one or more bolts 68 by passing the shaft of a bolt (screw member) through the through hole 63 and then tightening it into the screw hole of the second integration device 56.

[0042] Each guide plate 18a may be attached to the wall surface of the landing side 22 in the X direction of the elevator shaft 20, or to the wall surface on the far side (opposite side from the landing 22 side) in the X direction of the elevator shaft 20. Alternatively, each guide plate 18a may be installed on one side in the width direction of the car 11, as described in Japanese Patent Publication No. 9-278299. The second integration device may also have a permanent magnet or a clip, and the second integration device may be fixed to the guide plate 18a using a permanent magnet or a clip.

[0043] The first detection device 35 is capable of detecting a physical quantity that allows for the determination of whether or not at least a part of a person has entered a predetermined area below it. The first detection device 35 may include, for example, a millimeter-wave sensor, a LiDAR sensor, or an ultrasonic sensor. Here, the millimeter-wave sensor irradiates millimeter waves (electromagnetic waves with a wavelength of 1 to 10 millimeters) and can measure the distance to an obstacle and the direction of the obstacle from the time it takes for the millimeter waves to reflect back from an object. The LiDAR sensor measures scattered light from pulsed laser light irradiation and can detect the distance to an object at a distance and the direction of that object. The ultrasonic sensor transmits ultrasonic waves towards an object using a transmitter and receives the reflected waves with a receiver to detect the presence or absence of an object and the distance to the object.

[0044] The first detection device 35, which is equipped with these sensors, can freely adjust the detection area for people by adjusting the installation position, the direction of oscillation of the emitted waves, the wavelength of the emitted waves, and the output of the emitted waves. For example, by appropriately adjusting these conditions, the first detection device 35 can set a predetermined area below the counterweight 13 as the detection area. For example, this predetermined area below can be made to match an area that satisfies the following conditions: it includes all areas where the horizontal distance between the person (maintenance worker) and the counterweight 13 is less than or equal to a first predetermined distance, and does not include all areas where the horizontal distance between the person and the counterweight 13 is greater than or equal to a second predetermined distance (> first predetermined area), and the height (vertical) distance from the lower end of the counterweight 13 downwards is less than or equal to a predetermined distance. This area can then be set as the detection area.

[0045] Here, for example, with respect to the horizontal distance between the person and the counterweight 13, the first predetermined distance can be set to a length of 15 cm to 30 cm, and the second predetermined distance can be set to a length of 20 cm to 50 cm. Also, for example, with respect to the vertical distance from the lower end of the counterweight 13 downwards, the predetermined distance can be set to a length of 1 m to 4 m.

[0046] The first sound output device 46 also includes a sound generation unit that generates synthesized sound and a speaker electrically connected to the sound generation unit. The sound generation unit generates synthesized sound according to a control signal from the control panel 19, and the generated synthesized sound is output from the speaker to the elevator shaft 20. The control panel 19 and the first wireless communication device 51 each have a wireless signal transceiver and perform wireless communication based on wireless communication standards such as Bluetooth®, Wi-Fi®, or WiMAX. The first detection device 35 transmits detection information to the transceiver of the control panel 19 via the first wireless communication device 51. The control panel 19 also transmits control signals to the first sound output device 46 via its transceiver and the first wireless communication device 51.

[0047] The second detection device 39 is capable of detecting a physical quantity that allows for the determination of whether or not at least a part of a person has entered a predetermined area below it. The second detection device 39 may include, for example, a millimeter-wave sensor, a LiDAR sensor, or an ultrasonic sensor. The second detection device 39 can freely adjust the detection area for people by adjusting the installation position, the direction of oscillation of the emitted wave, the wavelength of the emitted wave, and the output of the emitted wave. By appropriately adjusting these conditions, the second detection device 39 can make the predetermined area below the guide plate 18a the detection area. For example, the predetermined area below can be made to match an area that satisfies the conditions that include all areas where the horizontal distance between the person and the guide plate 18a is less than or equal to a first predetermined distance, and does not include all areas where the horizontal distance between the person and the guide plate 18a is greater than or equal to a second predetermined distance (> first predetermined area), and that the height distance from the lower end of the guide plate 18a downwards is less than or equal to a predetermined distance, and can be set to that area.

[0048] Here, for example, with respect to the horizontal distance between a person and the guide board 18a, the first predetermined distance can be set to a length of 15 cm or more and 30 cm or less, and the second predetermined distance can be set to a length of 20 cm or more and 50 cm or less. Also, for example, with respect to the vertical distance from the lower end of the guide board 18a downwards, the predetermined distance can be set to a length of 1 m or more and 4 m or less.

[0049] The second sound output device 47 includes a voice generation unit that generates synthesized sound and a speaker electrically connected to the voice generation unit. The voice generation unit generates synthesized sound based on a control signal from the control panel 19, and the generated synthesized sound is output from the speaker to the elevator shaft 20. The control panel 19 and the second wireless communication device 52 each have a wireless signal transceiver and perform wireless communication based on wireless communication standards such as Bluetooth®, Wi-Fi®, or WiMAX. The second detection device 39 transmits detection information to the transceiver of the control panel 19 via the second wireless communication device 52. The control panel 19 also transmits control signals to the second sound output device 47 via its transceiver and the second wireless communication device 52.

[0050] Figure 7 is a schematic diagram illustrating the situation in which the first detection device 35 detects a person, and also a schematic diagram illustrating the transmission of a signal from the first detection device 35 to the control panel 19. Figure 8 is a schematic diagram illustrating the situation in which the second detection device 39 detects a person, and also a schematic diagram illustrating the transmission of a signal from the second detection device 39 to the control panel 19.

[0051] If the predetermined area includes an area that overlaps with the counterweight 13 in the height direction within the height range of the predetermined area, for example, as explained in Figure 7, when the basket 11 is rising in the direction of arrow A during maintenance, and at least a portion of the person 80 enters the area that overlaps with the counterweight 13 in the height direction, and the height distance between the lower end of the counterweight 13 and the person 80 approaches the predetermined distance, the first detection device 35 detects that at least a portion of the person 80 has entered the predetermined distance. Then, a signal from the first detection device 35 is transmitted to the control unit of the control panel 19 via the first wireless communication device 51 and the transceiver 19a of the control panel 19, or a signal from the first detection device 35 is transmitted to the control unit of the control panel 19 via the first wireless communication device 51, a wireless repeater (not shown), and the transceiver 19a of the control panel 19. Based on the transmission of this signal, the control panel 19 determines that at least a portion of the person 80 has entered the predetermined area below the counterweight 13.

[0052] Furthermore, if the predetermined area includes an area that overlaps with the guide plate 18a in the height direction within the height range of the predetermined area, for example, as explained in Figure 8, if at least a portion of the person 80 enters the area that overlaps with the guide plate 18a in the height direction while the cage 11 is rising in the direction of arrow A during maintenance, and the height distance between the lower end of the guide plate 18a and the person 80 approaches the predetermined distance, the second detection device 39 detects that at least a portion of the person 80 has entered the predetermined distance. Then, a signal from the second detection device 39 is transmitted to the control unit of the control panel 19 via the second wireless communication device 52 and the transceiver 19a of the control panel 19, or a signal from the second detection device 39 is transmitted to the control unit of the control panel 19 via the second wireless communication device 52, a wireless repeater (not shown), and the transceiver 19a of the control panel 19. Based on the transmission of this signal, the control panel 19 determines that at least a portion of the person 80 has entered the predetermined area below the guide plate 18a. The elevator in this disclosure does not necessarily have to be equipped with sound output devices 46 and 47. In this case, the wireless communication device 51 for transmitting a wireless signal based on a signal from the first detection device 35 to the control unit of the control panel 19 only needs to have a wireless signal transmitter, and the wireless communication device 52 for transmitting a wireless signal based on a signal from the second detection device 39 to the wireless communication device of the control panel 19 only needs to have a wireless signal transmitter. Furthermore, the wireless communication device of the control panel (control device) only needs to have a wireless signal receiver.

[0053] Next, an example of control performed by the control panel 19 to enhance the safety of the person 80 based on information from the first detection device 35 will be described. The control panel 19 can also perform control similar to the control described below based on information from the second detection device 39, and the explanation of that control will be omitted in the explanation of the control described next. Furthermore, if the deceleration operation of the cage 11 is performed based on the detection result of any one of the detection devices 35,39 while the control described below is being performed using the first detection device 35 and all of the second detection devices 39, the control based on the detection results of the other detection devices 35,39 will be terminated, and the process may start from step S1 after the deceleration operation is completed.

[0054] Figure 9 is an example flowchart illustrating an example of control performed by the control panel 19 of the elevator 10 to enhance the safety of people 80 by making it difficult for them to approach the counterweight 13. For example, when the mode of the elevator 10 is changed by operating a mode selection unit located on the back of the destination floor selection button 16, etc., from the normal mode in which the elevator car 11 is controlled to move up and down based on the destination floor selection button 16 used by a person inside the car 11 to specify the destination floor of the car 11, to a maintenance and inspection mode in which the car 11 does not move based on the destination floor selection button 16, the control starts.

[0055] In step S1 after the start of control, the control panel 19 determines, based on information from the first detection device 35, whether at least a portion of the person 80 is in a second predetermined area, which includes an area that overlaps the counterweight 13 in the height direction, within a height range where the height distance from the lower end of the counterweight 13 downwards is longer than a predetermined distance and less than or equal to a third predetermined distance.

[0056] If a positive determination is made in step S1, the process moves to step S2, in which the control panel 19 causes the first sound output device 46 to output a message indicating that the person should pay attention to the overhead counterweight 13, and then proceeds to step S3. Examples of such messages could be, for example, "Please pay attention to the overhead counterweight," or "If you continue like this, you will come into contact with the counterweight." On the other hand, if a negative determination is made in step S1, the process moves to step S3, in which the control panel 19 determines, based on information from the first detection device 35, whether at least a part of the person 80 is present at a height within a height range where the height distance from the lower end of the counterweight 13 downwards is less than or equal to a predetermined distance.

[0057] If the result in step S3 is negative, steps S1 and below are repeated. On the other hand, if the result in step S3 is positive, the process moves to step S4, where the control panel 19 determines, based on information from the first detection device 35, whether at least a portion of the person 80 is in a predetermined area below the counterweight 13. For example, it determines whether at least a portion of the person 80 is in a predetermined area that includes an area overlapping the counterweight 13 in the height direction, within a height range where the height distance from the lower end of the counterweight 13 to the lower side is less than or equal to the predetermined distance. If the result in step S4 is negative, the process moves to step S6. On the other hand, if the result in step S4 is positive, the process moves to step S5, where the control panel 19 controls the hoisting motor 12a to start the stopping operation of the basket 11, and then proceeds to step S6.

[0058] In step S6, the control panel 19 determines, based on information from the first detection device 35, whether at least a portion of the person 80 has entered an area that is included in the predetermined area and is less than or equal to a second predetermined distance, where the distance in the height direction is less than or equal to the predetermined distance. If the determination in step S6 is positive, the process moves to step S7, where the control panel 19 causes the first sound output device 46 to output a message indicating that the person is about to come into close proximity with the overhead counterweight 13, and then proceeds to step S8. Examples of messages to be output in step S7 include, "Please avoid the overhead counterweight 13," or "Please immediately pull your head and hands back."

[0059] On the other hand, if a negative result is obtained in step S6, the process proceeds to step S8, where the control panel 19 determines, for example, based on information from an encoder (not shown), whether either the basket 11 has stopped or the lower end of the counterweight 13 and the upper end of the basket 11 are at the same height. Here, if the encoder is configured as an absolute type encoder, the rotational distance from the origin of the hoisting machine motor 12a of the hoisting machine 12 can be detected, and the position of the basket 11 and the position of the counterweight 13 can be detected with high accuracy. The encoder may be configured as a mechanical (contact type), optical type, magnetic type, or electromagnetic induction type.

[0060] If the result in step S8 is negative, steps S4 and below are repeated. On the other hand, if the result in step S8 is positive, the control returns and step S1 is repeated. This control ends, for example, when the mode of the elevator 10 is changed by the operation of the mode selection unit from a maintenance mode in which the car 11 does not move based on the destination floor specification button 16, to a normal mode in which the car 11 is controlled to move up and down based on the destination floor specification button 16 for a person inside the car 11 to specify the destination floor of the car 11.

[0061] As described above, the elevator 10 includes one or more elevator shaft components (counterweights 13, guide plates 18a) arranged in the hoistway 20, the height of which changes when the car 11 moves, detection devices 35, 39 attached to the elevator shaft components 13, 18a, and a control device (control panel 19) that receives information from the detection devices 35, 39. The detection devices 35, 39 are capable of detecting a physical quantity that identifies a car deceleration start state in which at least a portion of a person 80 has entered a predetermined area below the elevator shaft components 13, 18a to which they are attached. When the control panel 19 receives information based on the physical quantity corresponding to the car deceleration start state detected by at least one of the detection devices 35, 39, it performs control to decelerate the movement speed of the car 11.

[0062] The aforementioned lower predetermined area may, for example, be the detection area of ​​the detection devices 35, 39 attached to the lower side of the elevator shaft equipment 13, 18a, or it may be the area within the detection area of ​​the detection devices 35, 39 attached to the lower side of the elevator shaft equipment 13, 18a where the height distance downward from the lower end of the elevator shaft equipment 13, 18a is less than or equal to the predetermined distance. Alternatively, the aforementioned lower predetermined area may be an area that satisfies the conditions that include all areas where the horizontal distance between the person 80 and the elevator shaft equipment 13, 18a is less than or equal to the first predetermined distance, and does not include all areas where the horizontal distance between the person 80 and the elevator shaft equipment 13, 18a is greater than or equal to the second predetermined distance (> first predetermined area), and that the height distance downward from the lower end of the elevator shaft equipment 13, 18a is less than or equal to the predetermined distance.

[0063] According to this disclosure, when the deceleration of the elevator car begins, at least a portion of the person 80 enters a predetermined area below the elevator shaft equipment 13, 18a, the speed of the elevator car 11 decreases. Therefore, by setting (matching) the predetermined area below to the area where the person 80 is likely to come into close proximity with the elevator shaft equipment 13, 18a, it is possible to suppress the person 80 from coming into close proximity with the elevator shaft equipment, thereby increasing the safety of the person 80.

[0064] Furthermore, the above-mentioned predetermined area may include an area where the distance in the height direction from the lower end of the elevator shaft equipment 13, 18a downwards is less than or equal to the predetermined distance, and which overlaps with the elevator shaft equipment 13, 18a in the height direction.

[0065] With this configuration, the elevator car will always decelerate when a person 80 is likely to come into particularly close proximity to the hoistway equipment 13, 18a. Therefore, the safety of the person 80 can be further enhanced. In addition, because the high safety of the person 80 is guaranteed, it becomes possible to check even the smallest details that could not be checked in the current maintenance procedures, enabling more thorough maintenance. Furthermore, because even small details can be checked, the points noticed during maintenance can be incorporated into the design of new elevators, leading to a reduction in malfunctions in new elevators. In addition, maintenance can be performed quickly and efficiently, reducing the burden on the person 80.

[0066] Furthermore, one or more detection devices may include at least one of a first detection device 35 attached to the counterweight 13 and a second detection device 39 attached to the guide plate 18a.

[0067] The guide plate 18a and the counterweight 13 are relatively close horizontally to the cage 11, making them easily accessible to the person 80 performing maintenance work on the cage 11. Furthermore, the counterweight 13 may also come into close proximity to the person 80 working in the pit.

[0068] According to the above configuration, proximity between the elevator equipment 13, 18a and the person 80 can be effectively suppressed.

[0069] Furthermore, one or more elevator components 13, 18a may include a counterweight 13 with a spacer 13c on its lower side, and the first detection device 35 may be attached to the spacer 13c.

[0070] With this configuration, the first detection device 35 can be easily fixed to the counterweight 13 using the spacer 13c.

[0071] Furthermore, the first detection device 35 may be attachable to both one side of the spacer 13c in the width direction and the other side of the spacer 13c in the width direction.

[0072] If an object is located in a position that interferes with the light or radio waves emitted by the first detection device 35 to detect the person 80, false detections are likely to occur.

[0073] With this configuration, the first detection device 35 can be attached to both one side and the other side in the width direction of the spacer 13c. Therefore, for each specification of the elevator 10, the first detection device 35 can be fixed to the side that is less likely to cause false detection based on the arrangement of objects in the hoistway 20. Thus, it is easier to detect people 80 with high accuracy.

[0074] Furthermore, the detection devices 35 and 39 may be detachable from the elevator shaft equipment 13 and 18a, and the detection devices 35 and 39 may communicate wirelessly with the control panel 19.

[0075] If the detection devices 35 and 39 are permanently installed and built-in, there is a risk that malfunctions may disrupt normal operation. Furthermore, if the detection devices 35 and 39 are permanently installed, the running costs will also be higher.

[0076] With this configuration, since the detection devices 35 and 39 are detachable from the hoistway equipment 13 and 18a, the detection devices 35 and 39 can be installed inside the hoistway 20 only when maintenance and inspection of the hoistway 20 is required. Therefore, malfunctions of the detection devices 35 and 39 will not disrupt normal operation, and the running costs of the elevator 10 can be reduced. In addition, since the detection devices 35 and 39 communicate wirelessly with the control panel 19, the mounting position of the detection devices 35 and 39 can be greatly expanded. Thus, detection can be performed with high accuracy, and the detection devices 35 and 39 can be easily installed.

[0077] Furthermore, the control panel 19 may stop the cage 11 when it receives information based on a physical quantity corresponding to the cage deceleration start state detected by at least one of the detection devices 35, 39.

[0078] The above configuration can further enhance the safety of 80 people.

[0079] Alternatively, the control panel 19 may decide whether or not to perform control to reduce the movement speed of the car 11 only when the car 11 is in maintenance mode and does not move based on the destination floor selection button 16 provided inside the car 11.

[0080] According to this configuration, the cage deceleration control described herein is not performed during normal operation when the vehicle is not in maintenance mode. Therefore, it is possible to prevent the cage deceleration control from being performed erroneously during normal operation.

[0081] Furthermore, the control panel 19 can determine, based on the physical quantities detected by the detection devices 35 and 39, that the height distance from the lower end of the elevator shaft equipment 13 and 18a downwards is less than or equal to a second predetermined distance, and is equipped with sound output devices 46 and 47. If the control panel 19 determines that at least a portion of the person 80 has entered an area that is included in the predetermined area and where the height distance is less than or equal to the second predetermined distance, the control panel 19 may cause the sound output devices 46 and 47 to output sound.

[0082] According to this configuration, for example, if the height distance from the lower end of the elevator shaft equipment 13, 18a to a person 80 located below it becomes less than or equal to the second predetermined distance, and at least a part of the person 80 enters the predetermined area, or if at least a part of the person remains in the predetermined area even after the elevator car deceleration has started, the sound output devices 46, 47 can output a warning sound or, as in the above embodiment, output a message indicating that the person is about to come into close proximity with the elevator shaft equipment above their head. Thus, the safety of the person 80 can be fully ensured. In this case, the second predetermined distance may be less than the above predetermined distance, as in the above embodiment, or it may be the same distance as the above predetermined distance.

[0083] Furthermore, the control panel 19 can determine, based on the physical quantities detected by the detection devices 35 and 39, that the height distance from the lower end of the elevator shaft equipment 13 and 18a downwards is greater than a predetermined distance but less than or equal to a third predetermined distance. The control panel 19 is equipped with sound output devices 46 and 47, and if it determines that at least a part of a person has entered a second predetermined area, which includes an area that overlaps the elevator shaft equipment 13 and 18a in the height direction, within the height range where the height distance is greater than a predetermined distance but less than or equal to a third predetermined distance, the control panel 19 may cause the sound output devices 46 and 47 to output a message indicating that the person should pay attention to the elevator shaft equipment 13 and 18a overhead.

[0084] This configuration further enhances the safety of the 80 people. Furthermore, it reduces the need for frequent cage deceleration control, improving the efficiency of maintenance and inspection work.

[0085] Furthermore, the sound output devices 46 and 47 may be configured integrally with the detection devices 35 and 19.

[0086] With this configuration, the sound output devices 46 and 47 can be installed simultaneously with the detection devices 35 and 39. Therefore, convenience and ease of handling can be improved. In addition, since the sound output devices 46 and 47 are positioned near the detection devices 35 and 39, they can emit a sound to alert people 80 from near the elevator equipment 13 and 18a, which are the objects that attract attention when people 80 are nearby. Thus, warning sounds can be effectively and reliably conveyed to people 80, significantly improving their safety.

[0087] This disclosure is not limited to the embodiments and their modifications, and various improvements and modifications are possible within the scope of the claims of this application and their equivalents.

[0088] For example, in the above embodiment, the case in which the detection devices 35 and 39 are integrated with the wireless communication devices 51 and 52 and the sound output devices 46 and 47 was described. However, the elevator of this disclosure does not have to have a sound output device that outputs sound to a person regarding proximity to the hoistway equipment, and the detection device may be integrated with only the wireless communication device. Alternatively, the elevator of this disclosure does not have to have a sound output device that outputs sound to a person to warn them of proximity to the hoistway equipment, and the detection device may transmit a signal to the control unit of the control device via a wireless communication device configured separately and a wireless communication device of the control device (control panel).

[0089] Alternatively, the elevator of this disclosure may transmit information from the detection device to a control device (control panel) via a wired connection. Figure 10 is a schematic configuration diagram of a modified elevator 110 corresponding to Figure 1, Figure 11 is a schematic diagram of the elevator 110 corresponding to Figure 7, and Figure 12 is a schematic diagram of the elevator 110 corresponding to Figure 8. As shown in Figures 10 and 11, the first detection device 135 is fixed to the counterweight 13, while the wireless communication device and sound output device do not need to be fixed to the counterweight 13. For example, while the car 11 is rising in the direction of arrow A during maintenance, if at least a portion of the person 80 enters a first area that includes an area overlapping the counterweight 13 in the height direction, and the height distance between the counterweight 13 and the person 80 approaches a predetermined distance, the first detection device 135 may detect that at least a portion of the person 80 has entered the predetermined distance. The signal from the first detection device 135 may be transmitted to the control unit of the control panel 119 via cable 175. Furthermore, the control panel 119 may be configured to determine, based on the transmitted signal, that at least a portion of the person 80 has entered a predetermined area below the counterweight 13.

[0090] Similarly, as shown in Figures 10 and 12, the second detection device 139 is fixed to the guide plate 18a, while the wireless communication device and sound output device do not need to be fixed to the guide plate 18a. For example, while the cage 11 is rising in the direction of arrow A during maintenance, if at least a portion of the person 80 enters a second area that includes an area overlapping the guide plate 18a in the height direction, and the height-by-height distance between the guide plate 18a and the person 80 approaches a predetermined distance, the second detection device 139 may detect that at least a portion of the person 80 has entered the predetermined distance. The signal from the second detection device 139 may be transmitted to the control unit of the control panel 119 via the cable 185. The control panel 119 may then determine, based on the transmitted signal, that at least a portion of the person 80 has entered a predetermined area below the guide plate 18a.

[0091] Furthermore, if the control panel 119 receives signals from the detection devices 135 and 139 via a wired connection, it may transmit information from the detection devices 135 and 139 to the control panel 119 by changing the strength of the current transmitted from the detection devices 135 and 139 to the control panel 119. In addition, the control panel 119 may activate the brake by changing the amount of current supplied to the coil of the hoisting machine motor 12a in response to the change in the current transmitted from the detection devices 135 and 139.

[0092] Furthermore, the detection devices 135 and 139 may change the amount of current they send to the control panel 119 according to the height distance between the elevator shaft equipment 13 and 18a and the person 80 when at least a portion of the person 80 enters a predetermined area. For example, they may send a current to the control panel 119 that increases as the height distance decreases, and the control panel 119 may perform control such that the deceleration acceleration when the car 11 decelerates increases as the received current increases.

[0093] Alternatively, the detection devices 135 and 139 may, when at least a portion of the person 80 enters a predetermined area, send a current to the control panel 119 that decreases as the distance in the height direction decreases, and the control panel 119 may perform control such that the deceleration acceleration when the cage 11 decelerates increases as the received current decreases.

[0094] Furthermore, if the first detection device 135 is fixed to the counterweight 13, but the wireless communication device and sound output device are not fixed to the counterweight 13, and the detection device 139 is fixed to the guide plate 18a, but the wireless communication device and sound output device are not fixed to the guide plate 18a, the control panel 119 may perform an example of control to enhance the safety of person 80 based on information from the first detection device 135, which will be described below.

[0095] In this case, the control panel 119 can perform control similar to the control described below based on information from the second detection device 139, but the explanation of that control will be omitted in the explanation of the control described below. Also, if the deceleration operation of the cage 11 is performed based on the detection result of any one of the detection devices 135,139 while the control described below is being performed using the first detection device 135 and all of the second detection devices 139, the control based on the detection result of the other detection devices 135,139 may be terminated, and the control of the other detection devices 135,139 may be started from step S11 after the deceleration operation has been completed.

[0096] Figure 13 is an example flowchart illustrating an example of control performed by the control panel 119 of the elevator 110 to enhance the safety of the person 80 by making it difficult for the person 80 to approach the counterweight 13. For example, when the mode of the elevator 110 is changed by operating a mode selection unit located on the back of the destination floor selection button 16, etc., from the normal mode in which the elevator car 11 is controlled to move up and down based on the destination floor selection button 16 used by a person inside the car 11 to specify the destination floor of the car 11, to a maintenance and inspection mode in which the car 11 does not move based on the destination floor selection button 16, control is started.

[0097] In step S11 after the start of control, the control panel 119 determines, based on information from the first detection device 135, whether at least a portion of the person 80 is in a predetermined area below the counterweight 13. For example, it determines whether at least a portion of the person 80 is in a predetermined area that includes an area that overlaps the counterweight 13 in the height direction, and where the height distance from the lower end of the counterweight 13 to the lower side is less than or equal to a predetermined distance.

[0098] If the determination in step S11 is negative, the control returns, and step S11 is performed again. On the other hand, if the determination in step S11 is positive, the process moves to step S12, in which the control panel 119 controls the hoisting motor 12a to start the stopping operation of the cage 11, and then the process moves to step S13.

[0099] In step S13, the control panel 119 determines, based on information from the first detection device 135, whether or not all of the people 80 have left the predetermined area. If the determination in step S13 is positive, the process moves to step S14, where the deceleration control of the car 11 is terminated, the speed of the car 11 is returned to its speed before deceleration, and then the control returns, and the steps from S11 onwards are repeated. As is clear from the procedure in step S14, in this control, even if deceleration control of the car 11 is performed, there is a possibility that the car 11 may not stop. On the other hand, if the determination in step S13 is negative, the process moves to step S15, where the control panel 119 determines, based on information from an encoder (not shown) (for example, the absolute type encoder described above), whether or not the car 11 has stopped.

[0100] If the result in step S15 is negative, the process proceeds to step S16, where the control panel 119 controls the hoisting motor 12a to continue the stopping operation of the cage 11, and then steps S13 and below are performed. On the other hand, if the result in step S15 is positive, the process proceeds to step S17, where the speed of the cage 11 is returned to the speed before deceleration, and then the control returns, and steps S11 and below are performed again.

[0101] This control ends when the mode of the elevator 10 is changed by the operation of the mode selection unit from a maintenance mode in which the car 11 does not move based on the destination floor specification button 16, to a normal mode in which the car 11 is controlled to move up and down based on the destination floor specification button 16, which allows a person inside the car 11 to specify the destination floor of the car 11.

[0102] Furthermore, if the elevator of this disclosure has one or more sound output devices that output sounds to a person 80 regarding proximity to hoistway equipment, the sound output devices do not need to be integrated into the detection device. If the elevator of this disclosure has multiple sound output devices that output sounds to a person 80 regarding proximity to hoistway equipment, the multiple sound output devices may be arranged in the hoistway at predetermined intervals in the height direction, at equal intervals in the height direction, or at unequal intervals in the height direction.

[0103] Furthermore, the case in which the predetermined area is a region where the height distance from the lower end of the hoistway equipment 13, 18a downwards is less than or equal to a predetermined distance, and which includes a region that overlaps with the hoistway equipment 13, 18a (all of them) in the height direction. However, the predetermined area may be any region below the hoistway equipment, for example, a region where the height distance from the lower end of the hoistway equipment downwards is less than or equal to a predetermined distance, and which overlaps with only a part of the hoistway equipment in the height direction.

[0104] Furthermore, the case in which the multiple elevator shaft equipment to which the detection device is attached includes a counterweight 13 and multiple guide plates 18a has been described. However, the multiple elevator shaft equipment to which the detection device is attached may consist only of a counterweight, or only of multiple guide plates 18a. Alternatively, one or more elevator shaft equipment to which the detection device is attached may include equipment other than the counterweight and guide plates, for example, a tie bar provided on the guide rail on the counterweight side to prevent objects from entering and interfering with the wire rope.

[0105] Furthermore, while we have described the case in which the detection device 35 is attached to the spacer 13c of the counterweight 13 when the multiple elevator shaft equipment to which the detection device is attached includes the counterweight 13, the detection device may also be attached to a location other than the spacer of the counterweight when the multiple elevator shaft equipment to which the detection device is attached includes the counterweight.

[0106] Furthermore, a case in which the detection devices 35 and 39 are detachable from the hoistway equipment 13 and 18a has been described, and a case in which the deceleration control of the elevator car 11 of this disclosure is performed only in maintenance mode has been described. However, the detection devices may be permanently fixed to the hoistway equipment, and the control device may determine whether or not the elevator car deceleration has started when the elevator car is in normal mode, in which the elevator car moves based on destination floor selection buttons provided inside the elevator car. [Explanation of Symbols]

[0107] 10,110 Elevator, 11 Car, 12 Hoisting machine, 12a Hoisting machine motor, 13 Counterweight (hoistway equipment) 13a Counterweight, 13b Frame, 13c Spacer, 13d Lower frame section, 14 Wire rope, 15 Car call button, 16 Destination floor selection button, 18 Landing position detection sensor, 18a Guide board (hoistway equipment), 18b Detector, 19,119 Control panel, 19a Transmitter / receiver, 20 Hoistway, 22 Landing, 30 Machine room, 31 Landing door, 32 Car door, 35,135 First detection device, 39,139 Second detection device, 46 First sound output device, 47 Second sound output device, 51 First wireless communication device, 52 Second wireless communication device, 55 First integrated device, 56 Second integrated device, 60 Rod-shaped member, 63 Through hole, 68 Bolt, 80 Person 175,185 cables.

Claims

1. One or more elevator shaft devices are arranged within the elevator shaft, and the height distance from the elevator car changes as the elevator car moves. A detection device attached to the aforementioned elevator equipment, The system includes a control device that receives information from the detection device, The detection device is capable of detecting a physical quantity that can identify the cage deceleration start state in which at least a portion of a person is inside a predetermined area below the elevator shaft equipment on which it is attached. When the control device receives information based on the physical quantity corresponding to the cage deceleration start state detected by at least one of the detection devices, it performs control to decelerate the cage's movement speed. An elevator comprising a guide board installed in the hoistway and a sensor that detects the guide board and the landing position at which the elevator car lands, wherein one or more of the hoistway equipment to which one or more of the detection devices are attached includes the guide board.

2. The elevator according to claim 1, wherein the predetermined region includes a region that overlaps the hoistway equipment in the height direction, where the distance from the lower end of the hoistway equipment downwards is less than or equal to the predetermined distance.

3. The elevator according to claim 1, wherein one or more detection devices include both a first detection device attached to a counterweight and a second detection device attached to the guide plate.

4. The one or more elevator devices include the counterweight with a spacer provided on its lower side, The elevator according to claim 3, wherein the first detection device is attached to the spacer.

5. One or more elevator shaft devices arranged in the elevator shaft, the height distance from the elevator car changes as the elevator car moves, A detection device attached to the aforementioned elevator equipment, The system includes a control device that receives information from the detection device, The detection device is capable of detecting a physical quantity that can identify the cage deceleration start state in which at least a portion of a person is inside a predetermined area below the elevator shaft equipment on which it is attached. When the control device receives information based on the physical quantity corresponding to the cage deceleration start state detected by at least one of the detection devices, it performs control to decelerate the cage's movement speed. One or more of the detection devices include at least one of a first detection device attached to a counterweight and a second detection device attached to a guide plate. The one or more elevator devices include the counterweight with a spacer provided on its lower side, The aforementioned first detection device is attached to the spacer, An elevator in which the first detection device can be attached to both one side of the spacer in the width direction and the other side of the spacer in the width direction.

6. The elevator according to any one of claims 1 to 5, wherein the detection device is detachably attached to the hoistway equipment, and the detection device and the control device communicate wirelessly.

7. The elevator according to any one of claims 1 to 5, wherein the control device stops the elevator car when it receives information based on the physical quantity corresponding to the car deceleration start state detected by at least one of the detection devices.

8. One or more elevator shaft devices arranged in the elevator shaft, the height distance from the elevator shaft changes as the elevator shaft moves, A detection device attached to the aforementioned elevator equipment, The system includes a control device that receives information from the detection device, The detection device is capable of detecting a physical quantity that can identify the cage deceleration start state in which at least a portion of a person is inside a predetermined area below the elevator shaft equipment on which it is attached. When the control device receives information based on the physical quantity corresponding to the cage deceleration start state detected by at least one of the detection devices, it performs control to decelerate the cage's movement speed. An elevator in which the control device determines whether or not to reduce the speed of movement of the car only when the car is in a maintenance mode in which it does not move, based on a destination floor selection button provided inside the car.

9. The elevator according to claim 1 or 2, wherein the guide plate has a through hole, and the detection device is attached to the guide plate using the through hole.

Images