Elevator

Abstract

An elevator (10) is provided with: detection devices (35, 39) which are attached to one or more hoistway devices (13, 18a) and which, when a car (11) moves, change the distance in the height direction between the one or more hoistway devices (13, 18a) and the car (11); and a control panel (19) that receives information from the detection devices (35, 39). The detection devices (35, 39) are capable of detecting a physical quantity capable of determining a car deceleration start state in which at least a portion of a person has entered a predetermined region below the hoistway equipment (13, 18a) to which the detection devices (35, 39) are attached. When the control panel (19) receives information based on the physical quantity corresponding to the deceleration start state of the elevator car detected by the at least one detection device (35, 39), the control panel (19) performs control to decelerate the moving speed of the elevator car (11).

Description

Technical Field

[0001] The present disclosure relates to an elevator. Background Art

[0002] Conventionally, as an elevator, there is an elevator described in Patent Document 1. This elevator has a guide plate (landing plate) and a landing sensor. The guide plate is provided in a hoistway, while the landing sensor is provided in a car. In this elevator, the landing sensor detects the guide plate, thereby determining the landing position of the car.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2014-73890 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] When a maintenance worker performs maintenance on hoistway equipment provided in the hoistway of an elevator, sometimes the worker focuses on finding problems that are invisible to the human eye, such as abnormal sounds, and sometimes it is not easy to notice other hoistway equipment close to the top of the head. Against this background, if it is possible to prevent the maintenance worker from easily approaching other hoistway equipment even when concentrating on maintaining the hoistway equipment, not only can a remarkable effect of improving the safety of the maintenance worker be obtained, but also an environment in which the maintenance worker can concentrate on maintenance can be realized, and high-quality maintenance can be efficiently performed. Therefore, an object of the present disclosure is to provide an elevator in which it is not easy for a maintenance worker to approach hoistway equipment and the safety of the maintenance worker can be improved.

[0008] Means for Solving the Problems

[0009] To solve the above problems, the elevator of the present disclosure includes: one or more hoistway equipment disposed in a hoistway, the distance in the height direction between the one or more hoistway equipment and the car changing when the car moves; a detection device installed in the hoistway equipment; and a control device that receives information from the detection device. The detection device can detect a physical quantity that can determine a state in which at least a part of a person enters a specified area below the hoistway equipment where the detection device is installed and the car deceleration starts. When the control device receives information on the physical quantity corresponding to the car deceleration start state detected by at least one of the detection devices, it controls the moving speed of the car to decelerate.

[0010] In addition, the specified area on the lower side described above can, for example, also be set as the detection area of a detection device installed on the lower side of the hoistway equipment, or can be set as the area within the detection area of the detection device installed on the lower side of the hoistway equipment where the distance in the height direction downward from the lower end of the hoistway equipment is equal to or less than a specified distance. Alternatively, the specified area on the lower side can also be set as an area that satisfies the following conditions: the condition that includes all areas where the horizontal distance between a person (maintenance worker) and the hoistway equipment is equal to or less than a first specified distance, and does not include all areas where the horizontal distance between the person and the hoistway equipment is equal to or greater than a second specified distance (> the first specified area), and the condition that the distance in the height direction downward from the lower end of the hoistway equipment becomes equal to or less than the specified distance.

[0011] According to the present disclosure, when the car deceleration start state is such that at least a part of a person has entered the specified area on the lower side of the hoistway equipment, the moving speed of the car decelerates. Thus, by setting the specified area on the lower side as an area where a person may approach the hoistway equipment (by making them coincide), it is possible to inhibit a person from approaching the hoistway equipment and improve the safety of the person.

[0012] In addition, it may be that the specified area includes an area where the distance in the height direction downward from the lower end of the hoistway equipment is equal to or less than a specified distance and that overlaps with the hoistway equipment in the height direction.

[0013] According to this structure, when the state is such that a person is particularly likely to approach the hoistway equipment, the car will surely decelerate. Thus, it is possible to further improve the safety of the person. In addition, since high safety of the person can be ensured, it is possible to confirm in maintenance the fine points that could not be confirmed in the current maintenance, and more thorough maintenance can be carried out. In addition, since the fine points that could not be confirmed can be confirmed, the points noted during maintenance can be applied to the design of a new elevator, and the number of defects in the new elevator can be reduced. In addition, maintenance can be carried out quickly and efficiently, and the burden on people can be reduced.

[0014] In addition, it may be that one or more of the detection devices include at least one of a first detection device installed on the counterweight and a second detection device installed on the guide plate.

[0015] The horizontal distance between the guide plate and the counterweight and the car is relatively short, and it is easy to approach a person performing maintenance work on the car. In addition, the counterweight may also approach a person working in the pit.

[0016] According to the above structure, it is possible to effectively inhibit the approach of the hoistway equipment to a person.

[0017] In addition, it may be that one or more of the hoistway equipment include the counterweight provided with a spacer on the lower side, and the first detection device is installed on the spacer.

[0018] According to this structure, a spacer can be used to easily fix the first detection device to the counterweight.

[0019] In addition, it may be that the first detection device can be installed on both one side in the width direction of the spacer and the other side in the width direction of the spacer.

[0020] When there is an object at a position where interference occurs with the light or radio wave output by the first detection device for detecting a person, false detection is likely to occur.

[0021] According to this structure, the first detection device can be installed on both one side and the other side in the width direction of the spacer. Therefore, according to the elevator specifications, the first detection device can be fixed to the side where false detection is not likely to occur according to the configuration of the objects in the hoistway. Thus, it is easy to detect a person with high precision.

[0022] In addition, it may be that the detection device can be disassembled and assembled relative to the hoistway equipment, and the detection device and the control device communicate wirelessly.

[0023] When the detection device is configured to be always installed, normal operation may malfunction due to a malfunction. In addition, when the detection device is always installed, the operating cost also becomes high.

[0024] According to this structure, the detection device can be disassembled and assembled relative to the hoistway equipment. Therefore, the detection device can be installed in the hoistway only during the maintenance inspection of the hoistway. Therefore, normal operation will not malfunction due to a malfunction of the detection device, and the operating cost of the elevator can also be suppressed. In addition, the detection device and the control device communicate wirelessly, so the degree of freedom of the installation position of the detection device can be increased. Thus, it is easy to perform detection with high precision, and the detection device can also be easily installed.

[0025] In addition, it may be that when the control device receives information on the physical quantity corresponding to the start state of the car deceleration detected by at least one of the detection devices, the control device stops the car.

[0026] According to the above structure, the safety of people can be further improved.

[0027] In addition, it may be that only in the maintenance inspection mode in which the car does not move according to the destination floor designation button provided in the car, the control device determines whether to perform control to decelerate the moving speed of the car.

[0028] According to this structure, during normal operation when it is not in the maintenance inspection mode, the car deceleration control of the present disclosure is not performed. Thus, it is possible to prevent the car deceleration control from being performed due to a malfunction during normal operation.

[0029] In addition, it may also be that the control device can determine, based on the physical quantity, that the distance in the height direction becomes equal to or less than a second specified distance, which is equal to or less than the specified distance, and has a sound output device. When it is determined that at least a part of the person has entered a region in the specified region where the distance in the height direction becomes equal to or less than the second specified distance, the control device causes the sound output device to output a sound.

[0030] According to this structure, for example, when at least a part of the person enters the above-mentioned specified region after the distance in the height direction from the lower end of the hoistway equipment to the person existing below the lower end of the hoistway equipment becomes equal to or less than the second specified distance, or when the state where at least a part of the person enters the above-mentioned specified region continues after the car deceleration start state is reached and the car starts to decelerate, the sound output device can output a warning sound, or output a statement informing of approaching the hoistway equipment above the head, such as "Please avoid the hoistway equipment above your head." or "Please immediately retract your head and hands." Thus, the safety of the person can be ensured without fail. In addition, in this case, the second specified distance can be the same as the specified distance, or can be less than the specified distance.

[0031] In addition, it may also be that the control device can determine, based on the physical quantity, that the distance in the height direction becomes equal to or less than a third specified distance that is longer than the specified distance, and has a sound output device. When the control device determines that at least a part of the person has entered a second specified region that includes a region overlapping with the hoistway equipment in the height direction within a height direction range where the distance in the height direction is longer than the specified distance and equal to or less than the third specified distance, the control device causes the sound output device to output a statement meaning to pay attention to the hoistway equipment above the head.

[0032] In addition, as a statement meaning to pay attention to the hoistway equipment above the head, for example, statements such as "Please pay attention to the hoistway equipment above your head" and "You will touch the hoistway equipment like this" are considered.

[0033] According to this structure, the safety of the person can be further improved. In addition, frequent car deceleration control can be suppressed, and the work efficiency of maintenance inspection work can be improved.

[0034] In addition, it may also be that the sound output device is integrally formed with the detection device.

[0035] According to this structure, while setting the detection device, a sound output device can also be set. Therefore, convenience and processability can be made good. In addition, since the sound output device is arranged near the detection device, a sound for alerting people can be output from the vicinity of the hoistway equipment, which is the object approaching the person and alerting attention. Thus, an alerting sound or the like can be effectively and reliably transmitted to people, and the safety of people can be significantly improved.

[0036] Effect of the Invention

[0037] In the elevator according to the present disclosure, it is difficult for a person (maintenance operator) to approach the hoistway equipment, and the safety of the person can be improved. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of an elevator according to an embodiment of the present disclosure.

[0039] Figure 2 It is a front view of the counterweight.

[0040] Figure 3 It is a diagram for explaining the fixing of the first integrated device to the counterweight.

[0041] Figure 4 It is a diagram for explaining the fixing of the first integrated device to the counterweight.

[0042] Figure 5 It is a diagram for explaining the fixing of the second integrated device to the guide plate.

[0043] Figure 6 It is a diagram for explaining the fixing of the second integrated device to the guide plate.

[0044] Figure 7 It is a schematic diagram for explaining the detection of the human condition by the first detection device and a schematic diagram for explaining the transmission of a signal from the first detection device to the control panel.

[0045] Figure 8 It is a schematic diagram for explaining the detection of the human condition by the second detection device and a schematic diagram for explaining the transmission of a signal from the second detection device to the control panel.

[0046] Figure 9 It is an example of a flowchart for explaining an example of the control performed by the control panel of the elevator to make it difficult for a person to approach the counterweight and improve the safety of the person.

[0047] Figure 10 It is for the elevator of the modified example and Figure 1 The corresponding schematic structural diagram.

[0048] Figure 11 It is for the elevator of the modified example and Figure 7 The corresponding schematic diagram.

[0049] Figure 12 This is a modified example of an elevator Figure 8 Corresponding schematic diagram.

[0050] Figure 13 This is an example of a flowchart illustrating an example of control performed by a control panel of an elevator according to a modified example to make it difficult for people to approach the counterweight and to improve human safety. DETAILED DESCRIPTION

[0051] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in the following, in the case of including a plurality of embodiments, modifications, etc., it is envisaged from the beginning to appropriately combine their characteristic parts to construct a new embodiment. In addition, in the following embodiments, the same structures are marked with the same reference numerals in the drawings and repeated descriptions are omitted. In addition, schematic diagrams are included in a plurality of drawings, and the dimension ratios of the vertical, horizontal, height, etc. of each component may not be consistent between different drawings. In addition, in the following description and drawings, the X direction is the depth direction of the 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 direction, the Y direction, and the Z direction are perpendicular to each other. In addition, among the structural elements described below, the structural elements that are not recorded in the independent claims representing the highest concepts are arbitrary structural elements and are not necessary structural elements.

[0052] Figure 1 1 is a schematic structural diagram of an elevator 10 according to an embodiment of the present disclosure. Figure 1 As shown, the elevator 10 includes a car 11, a hoisting machine 12, a counterweight 13, a rope 14, a car call button 15, a destination floor designation button 16, a landing position detection sensor 18, and a control panel 19 serving as a control device. The control panel 19 and the hoisting machine 12 are located in a machine room 30 above a hoistway 20. Alternatively, in an elevator without a machine room, the control panel and the hoisting machine are located, for example, in a pit below the hoistway. The rope 14 is wound around the hoisting machine 12, one end of which is fixed to the top of the car 11, while the other end is fixed to the counterweight 13 via a deflector pulley (not shown). The car call button 15 is used to call the car 11 and specify the direction of travel for the car 11. It is located at landings 22 on all floors. Furthermore, a destination floor designation button 16 is located inside the car 11 to specify the destination floor of the car 11.

[0053] The control panel 19 has a computer, such as a microcomputer, which includes a control section and a storage section. The control section, i.e., the processor, includes, for example, a CPU (Central Processing Unit). In addition, the storage section is composed of a hard disk drive (HDD), a solid state drive (SSD), etc., and may also include non-volatile memories such as a ROM (Read Only Memory) and volatile memories such as a RAM (Random Access Memory). The storage section may be composed of only one storage medium or may be composed of multiple different storage media. The CPU reads and executes control programs and the like pre-stored in the storage section. In addition, the non-volatile memory pre-stores control programs, specified thresholds, etc. In addition, the volatile memory temporarily stores the read control programs, processed data, etc.

[0054] The car 11 and the counterweight 13 are respectively guided by guide rails in the hoistway 20. The control panel 19 that has received signals from the car call button 15 and the destination floor designation button 16 appropriately controls the rotational speed and rotation direction of the traction machine motor 12a of the traction machine 12, whereby the car 11 moves up and down in the hoistway 20. The landing position detection sensor 18 detects the landing position of the landing 22 where the car 11 stops. The landing position detection sensor 18 includes, for example: a guide plate 18a made of metal (e.g., iron), which is provided in the hoistway 20 at a height position where the car 11 can stop at the landing position of each floor; and a magnetic detector 18b, which is provided on the car 11 and detects the guide plate 18a. The detector 18b detects the guide plate 18a. The control panel 19 that has received a signal indicating that the detector 18b has detected the guide plate 18a controls the traction machine motor 12a, whereby the car 11 stops at the floor where stop has been input. In addition, then, the control panel 19 controls a car door motor (not shown), whereby the car door 32 opens and, in linkage therewith, the landing door 31 opens, and people can get on and off the car 11.

[0055] The elevator 10 also 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 into one body to form a first integrated device 55. In addition, one second detection device 39, one second sound output device 47, and one second wireless communication device 52 are also integrated into one body to form a second integrated device 56. The number of the second integrated devices 56 is the same as the number of the guide plates 18a provided corresponding to each floor. The first integrated device 55 and the second integrated device 56 are integrated using one or more of an integration unit, such as a fastening unit, an adhesive, and a welding part.

[0056] The first integrated device 55 is fixed to a counterweight 13, which is an example of a hoistway device, using a detachable structure. Figure 2 is a front view of the counterweight 13, Figure 3 and Figure 4 is a view for explaining the fixing of the first integrated device 55 to the counterweight 13. As Figure 2 shown, the counterweight 13 includes: a frame body 13b that fixes a cable 14 and houses a plurality of rod-shaped counterweight bodies 13a; and a spacer 13c that is located on the lower side of the frame body 13b. The spacer 13c protrudes downward from the central part in the Y direction of the lower frame part 13d of the frame body 13b. As Figure 3 and Figure 4 shown, the first integrated device 55 is actually provided only on one side in the width direction (coinciding with the Y direction), but can be installed on 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 integrated device 55 can also be installed on both one side and the other side in the width direction of the spacer 13c.

[0057] Specifically, in the spacer 13c, a bottomed first threaded hole (not shown) extending in the Y direction is provided on the first side in the Y direction, and a bottomed second threaded hole (not shown) extending in the Y direction is provided on the second side in the Y direction. The first threaded hole is the same as the second threaded hole. In each threaded hole, the external thread of a rod-shaped member 60 having a small-diameter rod-shaped part (not shown) including an external thread (not shown) at the end portion can be screwed in. As Figure 3 and Figure 4As shown, when an external thread is screwed into the threaded hole of the spacer 13c and fixed to the spacer 13c, the rod-shaped member 60 extends in the Y direction. The rod-shaped member 60 has one or more bottomed threaded holes extending in the Y direction on the outer side surface in the Y direction. In addition, the first integration device 55 has one or more threaded holes extending in the Y direction and penetrating the first integration device 55 at its upper end. After screwing the external thread of a bolt (threaded member) (not shown) into the threaded hole of the first integration device 55, it is then screwed into the bottomed threaded hole of the rod-shaped member 60, whereby the first integration device 55 is fixed to the rod-shaped member 60 using one or more bolts. Additionally, the first integration device may have a permanent magnet, and the first integration device may be fixed to the spacer 13c using a permanent magnet or a clip, or the first integration device may be fixed to the rod-shaped member mounted on the spacer 13c using a permanent magnet or a clip.

[0058] On the other hand, a plurality of second integration devices 56 are each fixedly attached one by one to a plurality of guide plates 18a provided corresponding to each floor using a detachable structure. The guide plate 18a is an example of a hoistway device. Figure 5 and Figure 6 are diagrams for explaining the fixing of the second integration device 56 to the guide plate 18a. As Figure 5 and Figure 6 shown, each guide plate 18a is installed within a specified height range in the hoistway 20. Each guide plate 18a has a plurality of through holes (elongated holes in this embodiment) 63 for mounting each guide plate 18a to the hoistway 20 at intervals in the Z direction. In addition, the second integration device 56 has one or more bottomed threaded holes (not shown). After passing the shaft portion of a bolt (threaded member) through the through hole 63, it is then screwed into the threaded hole of the second integration device 56, whereby the second integration device 56 is fixed to the guide plate 18a using one or more bolts 68.

[0059] In addition, each guide plate 18a may be installed on the wall surface portion on the landing side 22 in the X direction of the hoistway 20, or may be installed on the wall surface portion on the inner side (opposite to the landing 22 side) in the X direction of the hoistway 20. Alternatively, each guide plate 18a may be provided on one side in the width direction of the car 11 as described in Japanese Patent Laid-Open No. 9-278299. In addition, the second integration device may 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.

[0060] The first detection device 35 can detect a physical quantity that can determine whether at least a part of a person has entered a specified area below the first detection device 35. The first detection device 35 may also include, for example, a millimeter-wave sensor, a LIDAR sensor, or an ultrasonic sensor. Here, the millimeter-wave sensor can irradiate millimeter waves (electromagnetic waves with a wavelength of 1 to 10 millimeters) and measure the distance to an obstacle and the direction of the obstacle based on the time until the millimeter waves are reflected from an object or the like. In addition, the LIDAR sensor can measure the scattered light from the irradiation of laser light emitted in a pulsed manner and detect the distance to an object located at a long distance and the direction of the object, etc. In addition, the ultrasonic sensor can send ultrasonic waves to an object through a transmitter and receive its reflected wave through a receiver, thereby detecting the presence or absence of an object and the distance to the object.

[0061] By adjusting the installation position, the oscillation direction of the oscillating wave, the wavelength of the oscillating wave, the output of the transmitted wave, etc. of the first detection device 35 equipped with these sensors, the detection area of a person can be freely adjusted. For example, by appropriately adjusting these conditions, the first detection device 35 can set the specified area below the counterweight 13 as the detection area. For example, it can be set so that the specified area on the lower side coincides with the area that satisfies the following conditions: it can be set as the area that includes all areas where the horizontal distance between a person (maintenance operator) and the counterweight 13 is less than or equal to the first specified distance, and does not include all areas where the horizontal distance between the person and the counterweight 13 is greater than or equal to the second specified distance (> the first specified area), and the distance in the height direction (vertical direction) downward from the lower end of the counterweight 13 is less than or equal to the specified distance.

[0062] Here, for example, regarding the horizontal distance between a person and the counterweight 13, the first specified distance can be set to a length of 15 cm or more and 30 cm or less, and the second specified distance can be set to a length of 20 cm or more and 50 cm or less. In addition, for example, regarding the distance in the height direction downward from the lower end of the counterweight 13, the specified distance can be set to a length of 1 m or more and 4 m or less.

[0063] In addition, the first sound output device 46 includes a voice generation unit that generates a synthesized sound, and a speaker electrically connected to the voice generation unit. The voice generation unit generates a synthesized sound based on a control signal from the control panel 19, and the generated synthesized sound is output from the speaker to the hoistway 20. The control panel 19 and the first wireless communication device 51 each have a transceiver for wireless signals, and perform wireless communication based on a wireless communication standard such as Bluetooth (registered trademark), Wi-Fi (registered trademark), or WiMAX, for example. The first detection device 35 transmits detection information to the transceiver of the control panel 19 via the first wireless communication device 51. In addition, the control panel 19 transmits a control signal to the first sound output device 46 via the transceiver and the first wireless communication device 51.

[0064] The second detection device 39 can detect a physical quantity that can determine whether at least a part of a person has entered a specified area below the second detection device 39. The second detection device 39 may also 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 of a person by adjusting the installation position, the oscillation direction of the oscillating wave, the wavelength of the oscillating wave, the output of the transmitted wave, etc. By appropriately adjusting these conditions, the second detection device 39 can set a specified area below the guide plate 18a as the detection area. For example, it can be set such that the specified area below coincides with an area that satisfies the following conditions: an area that includes all areas where the horizontal distance between the person and the guide plate 18a is equal to or less than a first specified distance and does not include all areas where the horizontal distance between the person and the guide plate 18a is equal to or greater than a second specified distance (> the first specified area), and the distance in the height direction downward from the lower end of the guide plate 18a is equal to or less than a specified distance.

[0065] Here, for example, regarding the horizontal distance between the person and the guide plate 18a, the first specified distance can be set to a length of 15 cm or more and 30 cm or less, and the second specified distance can be set to a length of 20 cm or more and 50 cm or less. In addition, for example, regarding the distance in the height direction downward from the lower end of the guide plate 18a, the specified distance can be set to a length of 1 m or more and 4 m or less.

[0066] In addition, the second sound output device 47 includes a voice generation unit that generates a synthesized sound, and a speaker electrically connected to the voice generation unit. The voice generation unit generates a synthesized sound based on a control signal from the control panel 19, and the generated synthesized sound is output from the speaker to the hoistway 20. The control panel 19 and the second wireless communication device 52 each have a transceiver for wireless signals, and perform wireless communication based on a wireless communication standard such as Bluetooth (registered trademark), Wi-Fi (registered trademark), or WiMAX, for example. The second detection device 39 sends detection information to the transceiver of the control panel 19 via the second wireless communication device 52. In addition, the control panel 19 sends a control signal to the second sound output device 47 via the transceiver and the second wireless communication device 52.

[0067] Figure 7 It is a schematic diagram for explaining the detection of the human condition by the first detection device 35 and is a schematic diagram for explaining the transmission of a signal from the first detection device 35 to the control panel 19. In addition, Figure 8 It is a schematic diagram for explaining the detection of the human condition by the second detection device 39 and is a schematic diagram for explaining the transmission of a signal from the second detection device 39 to the control panel 19.

[0068] When the specified area includes, within the height direction range of the specified area, an area that overlaps with the counterweight 13 in the height direction, for example, as Figure 7 explained, when the car 11 is ascending in the direction of arrow A during maintenance and at least a part of the person 80 enters the area that overlaps with the counterweight 13 in the height direction and the distance in the height direction between the lower end of the counterweight 13 and the person 80 approaches a specified distance, the first detection device 35 detects that at least a part of the person 80 has entered the specified distance. Then, a signal from the first detection device 35 is sent 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 sent to the control unit of the control panel 19 via the first wireless communication device 51, a wireless relay machine (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 part of the person 80 has entered the specified area below the counterweight 13.

[0069] In addition, when the specified area includes, within the height direction range of the specified area, an area that overlaps with the guide plate 18a in the height direction, for example, as Figure 8As described above, when the car 11 ascends in the direction of arrow A during maintenance and at least a part of the person 80 enters the area that overlaps with the guide plate 18a in the height direction and the distance in the height direction between the lower end of the guide plate 18a and the person 80 approaches a specified distance, the second detection device 39 detects that at least a part of the person 80 has entered the specified distance. Then, the signal from the second detection device 39 is sent 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 the signal from the second detection device 39 is sent to the control unit of the control panel 19 via the second wireless communication device 52, a wireless relay device (not shown), and the transceiver 19a of the control panel 19. According to the transmission of this signal, the control panel 19 determines that at least a part of the person 80 has entered the specified area below the guide plate 18a. In addition, the elevator of the present disclosure may not have the sound output devices 46 and 47. In this case, the wireless communication device 51 for sending a wireless signal based on the signal from the first detection device 35 to the control unit of the control panel 19 only needs to have a transmitter for wireless signals, and the wireless communication device 52 for sending a wireless signal based on the signal from the second detection device 39 to the control panel 19 only needs to have a transmitter for wireless signals. In addition, the wireless communication device of the control panel (control device) only needs to have a receiver for wireless signals.

[0070] Next, an example of the control performed by the control panel 19 according to the information from the first detection device 35 to improve the safety of the person 80 will be described. In addition, the control panel 19 can perform the same control as the control described below according to the information from the second detection device 39, and the description of this control is omitted according to the description of the control described below. In addition, it may be that during the control described below using the first detection device 35 and all the second detection devices 39, when the deceleration operation of the car 11 is performed based on the detection result of any one of the detection devices 35 and 39, the control based on the detection results of the detection devices 35 and 39 other than this one detection device ends, and after this deceleration operation ends, it starts from step S1.

[0071] Figure 9 It is an example of a flowchart for explaining an example of the control performed by the control panel 19 of the elevator 10 to make it difficult for the person 80 to approach the counterweight 13 and improve the safety of the person 80. For example, when the mode of the elevator 10 is changed from the normal mode to the maintenance inspection mode by operating a mode selection unit provided on the back side of the destination floor designation button 16 or the like, the control starts. In this normal mode, the car 11 is controlled to move up and down according to the destination floor designation button 16 for the person in the car 11 to designate the destination floor of the car 11. In this maintenance inspection mode, the car 11 does not move according to the destination floor designation button 16.

[0072] In step S1 after the start of control, the control panel 19 determines, based on the information from the first detection device 35, whether at least a part of the person 80 has entered a second specified area that includes an area overlapping with the counterweight 13 in the height direction within a height direction range where the distance from the lower end of the counterweight 13 downward is longer than a specified distance and is equal to or less than a third specified distance.

[0073] When an affirmative determination is made in step S1, the process proceeds to step S2. The control panel 19 causes the first sound output device 46 to output a statement indicating attention to the counterweight 13 overhead, and then the process proceeds to step S3. Here, as a statement indicating attention to the counterweight 13 overhead, for example, statements such as "Please pay attention to the counterweight overhead" and "You will touch the counterweight like this" are considered. On the other hand, when a negative determination is made in step S1, the process proceeds to step S3. The control panel 19 determines, based on the information from the first detection device 35, whether at least a part of the person 80 exists at a height within a height direction range where the distance from the lower end of the counterweight 13 downward is equal to or less than the specified distance.

[0074] When a negative determination is made in step S3, the steps after step S1 are repeated. On the other hand, when an affirmative determination is made in step S3, the process proceeds to step S4. The control panel 19 determines, based on the information from the first detection device 35, whether at least a part of the person 80 has entered a specified area below the counterweight 13. For example, it is determined whether at least a part of the person 80 has entered a specified area that includes an area overlapping with the counterweight 13 in the height direction within a height direction range where the distance from the lower end of the counterweight 13 downward is equal to or less than the above-mentioned specified distance. When a negative determination is made in step S4, the process proceeds to step S6. On the other hand, when an affirmative determination is made in step S4, the process proceeds to step S5. The control panel 19 controls the traction machine motor 12a, thereby starting the stop operation of the car 11, and then the process proceeds to step S6.

[0075] In step S6, the control panel 19 determines, based on the information from the first detection device 35, whether at least a part of the person 80 has entered an area within the above-mentioned specified area where the distance in the above-mentioned height direction becomes equal to or less than a second specified distance, and the second specified distance is equal to or less than the above-mentioned specified distance. When an affirmative determination is made in step S6, the process proceeds to step S7. The control panel 19 causes the first sound output device 46 to output a statement notifying approaching the counterweight 13 overhead, and then the process proceeds to step S8. As the statement output in step S7, for example, there are "Please avoid the counterweight 13 overhead." or "Please immediately retract your head and hands" etc.

[0076] On the other hand, when a negative determination is made in step S6, the process proceeds to step S8, and the control panel 19 determines, for example, based on information from an encoder (not shown), whether either of the following two situations holds: the car 11 has stopped, or the lower end of the counterweight 13 and the upper end of the car 11 are at the same height. Here, when an absolute encoder is used to form the encoder, the rotational distance of the traction machine motor 12a of the traction machine 12 from the origin can be detected, and the presence positions of the car 11 and the counterweight 13 can be detected with high precision. The encoder may be constituted by any one of a mechanical (contact type), optical, magnetic, or electromagnetic induction type.

[0077] When a negative determination is made in step S8, the steps after step S4 are repeated. On the other hand, when an affirmative determination is made in step S8, the control returns, and step S1 is repeated. For example, when the mode of the elevator 10 is changed from the maintenance inspection mode to the normal mode by the operation of the above-described mode selection unit, this control ends. In this maintenance inspection mode, the car 11 does not move according to the destination floor designation button 16, and in this normal mode, the elevation control of the car 11 is performed according to the destination floor designation button 16 for a person in the car 11 to designate the destination floor of the car 11.

[0078] As described above, the elevator 10 includes: one or more hoistway devices (counterweight 13, guide plate 18a) disposed in the hoistway 20, the distance in the height direction between the one or more hoistway devices and the car 11 changing when the car 11 moves; detection devices 35, 39 mounted on the hoistway devices 13, 18a; and a control device (control panel 19) that receives information from the detection devices 35, 39. The detection devices 35, 39 can detect a physical quantity that can determine that at least a part of a person 80 has entered a specified area below the hoistway device 13, 18a where the detection devices 35, 39 are mounted, which is the car deceleration start state. When the control panel 19 receives information 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 moving speed of the car 11.

[0079] In addition, the above-mentioned lower specified area can, for example, also be set as the detection area of the detection devices 35 and 39 installed on the lower side of the hoistway equipment 13 and 18a, or can be set as the area within the detection area of the detection devices 35 and 39 installed on the lower side of the hoistway equipment 13 and 18a where the distance in the height direction downward from the lower end of the hoistway equipment 13 and 18a is equal to or less than a specified distance. Alternatively, the above-mentioned lower specified area can also be set as an area that satisfies the following conditions: the condition that includes all areas where the horizontal distance between the person 80 and the hoistway equipment 13 and 18a is equal to or less than a first specified distance, and does not include all areas where the horizontal distance between the person 80 and the hoistway equipment 13 and 18a is equal to or greater than a second specified distance (> the first specified area), and the condition that the distance in the height direction downward from the lower end of the hoistway equipment 13 and 18a is equal to or less than a specified distance.

[0080] According to the present disclosure, when the car deceleration start state is such that at least a part of the person 80 enters the lower specified area of the hoistway equipment 13 and 18a, the moving speed of the car 11 decelerates. Thus, by setting the lower specified area as an area where the person 80 may approach the hoistway equipment 13 and 18a (by making them coincide), it is possible to prevent the person 80 from approaching the hoistway equipment and improve the safety of the person 80.

[0081] In addition, it can also be that the above-mentioned specified area includes an area where the distance in the height direction downward from the lower end of the hoistway equipment 13 and 18a is equal to or less than a specified distance and that overlaps with the hoistway equipment 13 and 18a in the height direction.

[0082] According to this structure, when the state is such that the person 80 is particularly likely to approach the hoistway equipment 13 and 18a, the car will surely decelerate. Thus, it is possible to further improve the safety of the person 80. In addition, since high safety of the person 80 can be ensured, it is possible to confirm in maintenance the fine details that could not be confirmed in the current maintenance, and more meticulous maintenance can be carried out. In addition, since the fine details can be confirmed, the points noted during maintenance can be applied to the design of new elevators, and the number of defects in new elevators can be reduced. In addition, maintenance can be carried out quickly and efficiently, and the burden on the person 80 can be reduced.

[0083] In addition, it can also be that one or more detection devices include at least one of the first detection device 35 installed on the counterweight 13 and the second detection device 39 installed on the guide plate 18a.

[0084] The horizontal distances between the guide plate 18a and the counterweight 13 and the car 11 are relatively short, and it is easy to approach the person 80 performing maintenance work on the car 11. In addition, the counterweight 13 may also approach the person 80 performing work in the pit.

[0085] According to the above structure, the approach of the hoistway equipment 13, 18a to the person 80 can be effectively suppressed.

[0086] In addition, it may also be that one or more of the hoistway equipment 13, 18a include a counterweight 13 provided with a spacer 13c on the lower side, and the first detection device 35 is installed on the spacer 13c.

[0087] According to this structure, the first detection device 35 can be easily fixed to the counterweight 13 by using the spacer 13c.

[0088] In addition, it may also be that the first detection device 35 can be installed on both one side in the width direction of the spacer 13c and the other side in the width direction of the spacer 13c.

[0089] When there is an object at a position where interference occurs with the light and radio waves output by the first detection device 35 for detecting the person 80, false detection is likely to occur.

[0090] According to this structure, since the first detection device 35 can be installed on both one side and the other side in the width direction of the spacer 13c, the first detection device 35 can be fixed to a side where false detection is not likely to occur according to the configuration of the objects in the hoistway 20 in accordance with the specifications of the elevator 10. Thus, it is easy to detect the person 80 with high precision.

[0091] In addition, it may also be that the detection devices 35, 39 can be disassembled and assembled relative to the hoistway equipment 13, 18a, and the detection devices 35, 39 and the control panel 19 communicate wirelessly.

[0092] When the detection devices 35, 39 are in a configuration where they are always installed, normal operation may malfunction due to false operation. In addition, when the detection devices 35, 39 are always installed, the operating cost also becomes high.

[0093] According to this structure, since the detection devices 35, 39 can be disassembled and assembled relative to the hoistway equipment 13, 18a, the detection devices 35, 39 can be installed in the hoistway 20 only during the maintenance inspection of the hoistway 20. Therefore, normal operation will not malfunction due to false operation of the detection devices 35, 39, and the operating cost of the elevator 10 can also be suppressed. In addition, since the detection devices 35, 39 and the control panel 19 communicate wirelessly, the degree of freedom in the installation position of the detection devices 35, 39 can be increased. Thus, it is easy to perform detection with high precision, and the detection devices 35, 39 can also be easily installed.

[0094] In addition, it may also be that when the control panel 19 receives information on the physical quantity corresponding to the above-described car deceleration start state detected by at least one of the detection devices 35, 39, the car 11 is stopped.

[0095] According to the above structure, the safety of person 80 can be further improved.

[0096] In addition, it may also be that only in the maintenance inspection mode in which the car 11 does not move according to the destination floor designation button 16 provided in the car 11, the control panel 19 determines whether to control the car 11 to decelerate its moving speed.

[0097] According to this structure, during normal operation when it is not in the maintenance inspection mode, the car deceleration control of the present disclosure is not performed. Thus, it is possible to prevent the car deceleration control from being performed due to malfunction during normal operation.

[0098] In addition, it may also be that the control panel 19 can determine, based on the physical quantities detected by the detection devices 35 and 39, that the height-direction distance downward from the lower end of the hoistway equipment 13 and 18a becomes equal to or less than a second specified distance, which is equal to or less than the specified distance. Having the sound output devices 46 and 47, when it is determined that at least a part of person 80 has entered a region in the specified region where the height-direction distance is equal to or less than the second specified distance, the control panel 19 causes the sound output devices 46 and 47 to output sound.

[0099] According to this structure, for example, after the height-direction distance from the lower end of the hoistway equipment 13 and 18a to person 80 existing below the lower end of the hoistway equipment 13 and 18a becomes equal to or less than the second specified distance and then at least a part of person 80 enters the specified region, or when the state where at least a part of a person enters the above-mentioned specified region continues after the car deceleration start state and the car starts to decelerate, the sound output devices 46 and 47 can output a warning sound, or output a statement notifying of approaching the hoistway equipment above the head as in the above-described embodiment. Thus, the safety of person 80 can be ensured without fail. In addition, in this case, the second specified distance can be less than the above-mentioned specified distance as in the above-described embodiment, or can be the same distance as the above-mentioned specified distance.

[0100] In addition, it may also be that the control panel 19 can determine, based on the physical quantities detected by the detection devices 35 and 39, that the height-direction distance downward from the lower end of the hoistway equipment 13 and 18a becomes equal to or less than a third specified distance that is longer than the specified distance. Having the sound output devices 46 and 47, when the control panel 19 determines that at least a part of a person has entered a second specified region including a region overlapping with the hoistway equipment 13 and 18a in the height direction within a height-direction range where the height-direction distance is longer than the specified distance and equal to or less than the third specified distance, the control panel 19 causes the sound output devices 46 and 47 to output a statement meaning to pay attention to the hoistway equipment 13 and 18a above the head.

[0101] According to this structure, the safety of person 80 can be further improved. In addition, frequent car deceleration control can be suppressed, and the work efficiency of maintenance inspection work can be improved.

[0102] In addition, it may also be that the sound output devices 46 and 47 are integrally formed with the detection devices 35 and 19.

[0103] According to this structure, while the detection devices 35 and 39 are provided, the sound output devices 46 and 47 can also be provided. Therefore, convenience and processability can be made good. In addition, since the sound output devices 46 and 47 are arranged near the detection devices 35 and 39, a sound for alerting person 80 can be output from the vicinity of the hoistway equipment 13 and 18a, which is the object approaching person 80 and attracting attention. Thus, a sound for alerting attention or the like can be effectively and reliably transmitted to person 80, and the safety of person 80 can be made remarkable.

[0104] In addition, the present disclosure is not limited to the above-described embodiments and their modified examples, and various improvements and changes can be made within the scope of the matters described in the claims of the present application and their equivalents.

[0105] For example, in the above-described embodiment, a case where the detection devices 35 and 39 are integrated with the wireless communication devices 51 and 52 and the sound output devices 46 and 47 to form a single body has been described. However, the elevator of the present disclosure may not have a sound output device for outputting a sound related to approaching the hoistway equipment to a person, and the detection device may be integrated only with the wireless communication device to form a single body. Or, the elevator of the present disclosure may not have a sound output device for outputting a sound for alerting attention to approaching the hoistway equipment, and the detection device may send a signal to the control unit of the control device via a wireless communication device that is separately configured from it and the wireless communication device of the control device (control panel).

[0106] Or, the elevator of the present disclosure may send the information from the detection device to the control device (control panel) in a wired manner. Figure 10 It is a schematic structural diagram of the elevator 110 of the modified example corresponding to Figure 1 and Figure 11 It is a schematic diagram of the elevator 110 corresponding to Figure 7 and Figure 12 It is a schematic diagram of the elevator 110 corresponding to Figure 8 As shown in Figure 10 and Figure 11As shown, it is also possible that the first detection device 135 is fixed to the counterweight 13, while on the other hand, the wireless communication device and the sound output device are not fixed to the counterweight 13. Moreover, for example, it is also possible that during the maintenance of the car 11 ascending in the direction of arrow A, when at least a part of the person 80 enters the first area including the area overlapping with the counterweight 13 in the height direction, and the distance in the height direction between the counterweight 13 and the person 80 approaches a specified distance, the first detection device 135 detects that at least a part of the person 80 has entered the specified distance. Then, the signal from the first detection device 135 can also be sent to the control unit of the control panel 119 via the cable 175. Then, the control panel 119 can also determine, based on the sent signal, that at least a part of the person 80 has entered the specified area below the counterweight 13.

[0107] In addition, similarly, as Figure 10 and Figure 12 shown, it is also possible that the second detection device 139 is fixed to the guide plate 18a, while on the other hand, the wireless communication device and the sound output device are not fixed to the guide plate 18a. Moreover, for example, it is also possible that during the maintenance of the car 11 ascending in the direction of arrow A, when at least a part of the person 80 enters the second area including the area overlapping with the guide plate 18a in the height direction, and the distance in the height direction between the guide plate 18a and the person 80 approaches a specified distance, the second detection device 139 detects that at least a part of the person 80 has entered the specified distance. Then, the signal from the second detection device 139 can also be sent to the control unit of the control panel 119 via the cable 185. Then, the control panel 119 can also determine, based on the sent signal, that at least a part of the person 80 has entered the specified area below the guide plate 18a.

[0108] In addition, when the control panel 119 receives the signals from the detection devices 135 and 139 in a wired manner, information can also be sent from the detection devices 135 and 139 to the control panel 119 by changing the intensity of the feed current from the detection devices 135 and 139 to the control panel 119. Moreover, the control panel 119 can also change the amount of current supplied to the coil of the traction machine motor 12a according to the change in the feed current from the detection devices 135 and 139, so as to make the brake work.

[0109] In addition, when at least a part of the person 80 has entered the specified area, the detection devices 135 and 139 can also change the amount of the feed current fed to the control panel 119 according to the distance in the height direction between the hoistway equipment 13, 18a and the person 80. For example, a feed current that increases as the above-mentioned distance in the height direction becomes smaller can also be fed to the control panel 119, and the control panel 119 can also perform the following control: as the received feed current increases, the deceleration acceleration when the car 11 decelerates becomes larger.

[0110] Alternatively, when at least a part of the person 80 enters a specified area, the detection devices 135 and 139 may also feed a feed current that decreases as the distance in the above-described height direction decreases to the control panel 119, and the control panel 119 may also perform the following control: as the received feed current decreases, increase the deceleration acceleration when decelerating the car 11.

[0111] In addition, when the first detection device 135 is fixed to the counterweight 13, the wireless communication device and the sound output device are not fixed to the counterweight 13, the detection device 139 is fixed to the guide plate 18a, and the wireless communication device and the sound output device are not fixed to the guide plate 18a, the control panel 119 may also perform an example of the control described below for improving the safety of the person 80 based on the information from the first detection device 135.

[0112] Further, in this case, the control panel 119 can perform the same control as the control described below based on the information from the second detection device 139, but the description of this control is omitted according to the description of the control described below. In addition, during the control described below using the first detection device 135 and all the second detection devices 139, when the deceleration operation of the car 11 is performed based on the detection results of any one of the detection devices 135 and 139, the control based on the detection results of the detection devices 135 and 139 other than this one detection device may also end, and the control of the detection devices 135 and 139 other than this one detection device may also start from step S11 after the deceleration operation ends.

[0113] Figure 13 It is an example of a flowchart illustrating an example of the control performed by the control panel 119 of the elevator 110 to make it difficult for the person 80 to approach the counterweight 13 and improve the safety of the person 80. For example, when the mode of the elevator 110 is changed from the normal mode to the maintenance inspection mode by operating a mode selection unit provided on the back side of the destination floor designation button 16 or the like, the control starts. In this normal mode, the up and down control of the car 11 is performed according to the destination floor designation button 16 for the person in the car 11 to designate the destination floor of the car 11. In this maintenance inspection mode, the car 11 does not move according to the destination floor designation button 16.

[0114] In step S11 after the control starts, the control panel 119 determines, based on the information from the first detection device 135, whether at least a part of the person 80 has entered a specified area below the counterweight 13. For example, it determines whether at least a part of the person 80 has entered a specified area that includes a region where the distance in the height direction from the lower end of the counterweight 13 downward is equal to or less than a specified distance and that overlaps the counterweight 13 in the height direction.

[0115] When a negative determination is made in step S11, the control returns and step S11 is performed again. On the other hand, when an affirmative determination is made in step S11, the process proceeds to step S12, and the control panel 119 controls the traction machine motor 12a, thereby starting the stop operation of the car 11, and then the process proceeds to step S13.

[0116] In step S13, the control panel 119 determines whether all of the people 80 have left the specified area based on the information from the first detection device 135. When an affirmative determination is made in step S13, the process proceeds to step S14, the deceleration control of the car 11 is ended, the speed of the car 11 is restored to the speed before deceleration, and then the control returns and steps after step S11 are performed again. According to the steps of step S14, in this control, even when the deceleration control of the car 11 is performed, the car 11 may not stop. On the other hand, when a negative determination is made in step S13, the process proceeds to step S15, and the control panel 119 determines whether the car 11 has stopped based on information from an encoder (such as the above-mentioned absolute encoder) not shown.

[0117] When a negative determination is made in step S15, the process proceeds to step S16, the control panel 119 controls the traction machine motor 12a, thereby continuing the stop operation of the car 11, and then the steps after step S13 are performed. On the other hand, when an affirmative determination is made in step S15, the process proceeds to step S17, the speed of the car 11 is restored to the speed before deceleration, and then the control returns and steps after step S11 are performed again.

[0118] When the mode of the elevator 10 is changed from the maintenance inspection mode to the normal mode by the operation of the above-mentioned mode selection unit, this control ends. In this maintenance inspection mode, the car 11 does not move according to the destination floor designation button 16, and in this normal mode, the up and down control of the car 11 is performed according to the destination floor designation button 16 for a person in the car 11 to designate the destination floor of the car 11.

[0119] In addition, in the case where the elevator of the present disclosure has one or more sound output devices that output sounds related to approaching the hoistway equipment to the person 80, the sound output devices may not be integrated with the detection devices. In the case where the elevator of the present disclosure has a plurality of sound output devices that output sounds related to approaching the hoistway equipment to the person 80, the plurality of sound output devices may be arranged in the hoistway at regular intervals in the height direction, may be arranged in the hoistway at equal intervals in the height direction, or may be arranged in the hoistway at unequal intervals in the height direction.

[0120] In addition, a case is described where the specified area is an area that includes a distance in the height direction downward from the lower end of the hoistway equipment 13, 18a that is equal to or less than a specified distance and overlaps with the hoistway equipment 13, 18a (in its entirety) in the height direction. However, the specified area may be an area below the hoistway equipment and can be any area. For example, it may also be an area where the distance in the height direction downward from the lower end of the hoistway equipment is equal to or less than a specified distance and overlaps with only a part of the hoistway equipment in the height direction, etc.

[0121] In addition, a case is described where the multiple hoistway equipment on which the detection device is installed includes the counterweight 13 and multiple guide plates 18a. However, the multiple hoistway equipment on which the detection device is installed may also be only the counterweight, or may be only the multiple guide plates 18a. Alternatively, the one or more hoistway equipment on which the detection device is installed may also include equipment other than the counterweight and the guide plates. For example, it may also include a pull rod provided on the guide rail on the counterweight side in a manner that prevents an object from entering and interfering with the cable.

[0122] In addition, a case is described where the detection device 35 is installed on the spacer 13c of the counterweight 13 when the multiple hoistway equipment on which the detection device is installed includes the counterweight 13. However, when the multiple hoistway equipment on which the detection device is installed includes the counterweight, the detection device may also be installed at a location other than the spacer of the counterweight.

[0123] In addition, a case is described where the detection devices 35, 39 can be disassembled and assembled relative to the hoistway equipment 13, 18a, and a case is described where the deceleration control of the car 11 of the present disclosure is performed only in the maintenance mode. However, the detection device may also be always fixed to the hoistway equipment, and the control device may also determine whether the car deceleration start state is reached in the normal mode where the car moves according to the destination floor designation button provided in the car.

[0124] Reference Numeral Explanation

[0125] 10, 110: elevator; 11: car; 12: traction machine; 12a: traction machine motor; 13: counterweight (hoistway equipment); 13a: counterweight body; 13b: frame; 13c: spacer; 13d: lower frame part; 14: cable; 15: car call button; 16: destination floor designation button; 18: landing position detection sensor; 18a: guide plate (hoistway equipment); 18b: detector; 19, 119: control panel; 19a: transceiver; 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 integration device; 56: second integration device; 60: rod-shaped member; 63: through hole; 68: bolt; 80: person; 175, 185: cable.

Claims

1. An elevator, comprising: One or more hoistway devices disposed in a hoistway, the distance in the height direction between the one or more hoistway devices and the car changing when the car moves; A detection device mounted on the hoistway device; and A control device that receives information from the detection device, The detection device can detect a physical quantity that can determine that at least a part of a person has entered a car deceleration start state in a specified area below the hoistway device on which the detection device is installed, When the control device receives information on the physical quantity corresponding to the car deceleration start state detected by at least one of the detection devices, it controls to decelerate the moving speed of the car.

2. The elevator according to claim 1, wherein The specified area includes an area where the distance in the height direction from the lower end of the hoistway device downward is equal to or less than a specified distance and that overlaps the hoistway device in the height direction.

3. The elevator according to claim 1 or 2, wherein One or more of the detection devices includes at least one of a first detection device mounted on a counterweight and a second detection device mounted on a guide plate.

4. The elevator according to claim 3, wherein One or more of the hoistway devices includes the counterweight provided with a spacer on the lower side, The first detection device is mounted on the spacer.

5. The elevator according to claim 4, wherein The first detection device can be mounted on both one side in the width direction of the spacer and the other side in the width direction of the spacer.

6. The elevator according to any one of claims 1 to 5, wherein The detection device can be disassembled and assembled relative to the hoistway device, and the detection device and the control device communicate wirelessly.

7. The elevator according to any one of claims 1 to 6, wherein When the control device receives information on the physical quantity corresponding to the car deceleration start state detected by at least one of the detection devices, it stops the car.

8. The elevator according to any one of claims 1 to 7, wherein Only when it becomes a maintenance inspection mode in which the car does not move according to the destination floor designation button provided in the car, the control device determines whether to control to decelerate the moving speed of the car.

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