CN108529368B

CN108529368B - Elevator maintenance support system

Info

Publication number: CN108529368B
Application number: CN201711345919.4A
Authority: CN
Inventors: 荒井佑树
Original assignee: Toshiba Elevator Co Ltd
Current assignee: Toshiba Elevator and Building Systems Corp
Priority date: 2017-03-06
Filing date: 2017-12-15
Publication date: 2020-03-27
Anticipated expiration: 2037-12-15
Also published as: CN108529368A; JP2018144949A; JP6321246B1

Abstract

Provided is an elevator maintenance work support system capable of more reliably ensuring a sufficient retreat space corresponding to the posture of an operator in a work space where elevator maintenance work is performed. An elevator maintenance work support system according to an embodiment is a system for supporting maintenance work performed by an elevator operator, and includes: an elevator car, a detection device, a posture detection device and a control part. The detection device detects an operator who enters or exits a working space between the bottom or top of a hoistway of an elevator and a car. The posture detection device detects the posture of the operator. The control unit outputs an operation stop command for stopping the operation of the elevator when it is determined that the evacuation space indicating the space allocatable to each of the working spaces is equal to or less than a predetermined size based on the detected posture of the working person.

Description

Elevator maintenance support system

Technical Field

An embodiment of the invention relates to an elevator maintenance work support system.

Background

Conventionally, when performing maintenance work of an elevator, a worker performs work in a work space such as a pit or a car at the lower end of a hoistway. In order to support such an operator, a technique of controlling the operation of the elevator is used.

In addition, in maintenance work of an elevator, each worker needs to secure a sufficient amount of space for evacuation because each worker is evacuated.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-178496

However, the size of the required evacuation space varies depending on the posture of the worker who performs the maintenance work. In the prior art, it is sometimes difficult to determine whether or not a sufficient retreat space is secured according to the posture of the operator.

Disclosure of Invention

An elevator maintenance work support system according to an embodiment is a system for supporting maintenance work performed by an elevator operator, and includes: an elevator car, a detection device, a posture detection device and a control part. The detection device detects an operator who enters or exits a working space between the bottom or top of a hoistway of an elevator and a car. The posture detection device detects the posture of the operator. The control unit outputs an operation stop command for stopping the operation of the elevator when determining that a retreat space indicating a space assignable to each of the working spaces is equal to or smaller than a predetermined size based on the detected posture of the working person.

Drawings

Fig. 1 is a diagram showing an example of a schematic configuration of an elevator in embodiment 1.

Fig. 2 is a diagram showing an example of the probe apparatus according to embodiment 1.

Fig. 3 is a diagram showing an example of a functional configuration of an elevator maintenance work support system according to embodiment 1.

Fig. 4 is a diagram showing an example of a table structure of the back-off space predetermined size database in embodiment 1.

Fig. 5 is a diagram showing an example of a hardware configuration of the elevator maintenance work support device according to embodiment 1.

Fig. 6 is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system in embodiment 1.

Fig. 7 is a diagram showing an example of a functional configuration of an elevator maintenance work support system according to embodiment 2.

Fig. 8 is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system in embodiment 2.

Fig. 9 is a diagram showing an example of a functional configuration of an elevator maintenance work support system according to embodiment 3.

Fig. 10 is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system in embodiment 3.

Fig. 11 is a diagram showing an example of a functional configuration of an elevator maintenance work support system according to embodiment 4.

Fig. 12 is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system according to embodiment 4.

Fig. 13 is a diagram showing an example of a functional configuration of an elevator maintenance work support system according to embodiment 5.

Fig. 14A is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system according to embodiment 5.

Fig. 14B is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system according to embodiment 5.

Fig. 15 is a diagram showing an example of a functional configuration of an elevator maintenance work support system according to embodiment 6.

Fig. 16A is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system according to embodiment 6.

Fig. 16B is a flowchart showing an example of a procedure of a process performed by the elevator maintenance work support system according to embodiment 6.

Description of the symbols

1: an elevator, 2: car, 2 a: face on the car, 3: counterweight, 4: main steel wire rope, 5: traction machine, 5 d: encoder, 5 c: motor, 6: landing, 7: hoistway, 7 a: bottom, 7 b: top, 9: landing operation box, 10: control cabinet, 11: pit, 12: a door, 13: sensor, 14: machine room, 15a, 15 b: detection device, 16: brake, 17a, 17 b: operating section, 18: posture detection device, 34: storage unit, 100: elevator maintenance work support device, 101, 1101: counter, 102, 1102, 2102: calculation unit, 103, 1103, 2103, 3103: determination unit, 104, 1104: control command input unit, 105, 1105, 2105, 3105, 4105: control unit, 106: operation direction determination unit, 107: operation speed calculation section, 110: elevator control unit, 111: car position detecting unit, 900: back-off space-specific size Database (DB), M: operator, S: an elevator maintenance support system.

Detailed Description

(embodiment mode 1)

Fig. 1 is a diagram showing an example of a schematic configuration of an elevator 1 in the present embodiment. The elevator maintenance work support system S of the present embodiment includes an elevator 1 as shown in fig. 1. The elevator 1 is a landing 6 in which a car 2 can move up and down in a hoistway 7 to an arbitrary destination floor. The elevator 1 includes a car 2, a counterweight 3, a main rope 4, a hoisting machine 5, a control cabinet 10, a sensor 13, a brake 16,

operation portions

17a and 17b, and the like. The elevator 1 is a so-called bucket elevator in which a car 2 and a counterweight 3 are connected by a main rope 4.

The hoistway 7 is a vertically long space provided in a building in which the elevator 1 is installed. The hoistway 7 has a bottom 7a at a lower end and a top 7b at an upper end.

A pit 11 is provided at the lower end of the hoistway 7. The pit 11 is a space provided from the bottom 7a of the hoistway 7 to the position of the floor of the lowermost floor of the landing 6 where the car 2 is stopped.

The bottom 7a is the floor of the hoistway 7 and also the floor of the pit 11. The top portion 7b can also be referred to as a ceiling of the hoistway 7.

The car 2 can be raised and lowered in the hoistway 7. A car upper plate surface 2a on which the operator M can ride is provided on the car 2. The car upper panel surface 2a is formed by a panel or the like constituting a ceiling of the car 2.

The operator M who performs maintenance work on the elevator 1 performs work in the pit 11 or on the car upper plate surface 2 a. When the operator M enters the pit 11 to perform work, a space from the bottom 7a of the hoistway 7 to the car 2 becomes a work space of the operator M. This working space is referred to as an under-car working space. When the car 2 is located at a position higher than the uppermost portion of the pit 11, the under-car working space includes the pit 11.

When the operator M performs work on the car upper plate surface 2a, the space from the ceiling portion 7b of the hoistway 7 to the car 2 becomes the work space of the operator M. This working space is referred to as an on-car working space. In the case where the elevator 1 is a so-called machine-roomless elevator having no machine room 14, a space extending from a component such as the control cabinet 10 provided in the hoistway 7 to the car 2 may be referred to as an on-car working space.

As shown in fig. 1, the worker M carries the posture detection device 18. The posture detection device 18 is a sensor that detects the posture of the worker M. For example, the posture detection device 18 is a sensor in which an acceleration sensor, a gyro sensor, a capacitance sensor, and the like are combined. In fig. 1, the posture detection device 18 is attached to the head of the worker M, but the attachment position and attachment member of the posture detection device 18 are not limited. The posture detection device 18 may be wearable, and may be attached to the waist of the operator M. The posture detection device 18 may be attached to a helmet, glasses (goggles), a work suit, or the like. The posture detection device 18 sends the detected posture of the worker M to the control cabinet 10.

The elevator maintenance work support system S may include a camera or the like that captures an image of the operator M in the working space and detects the posture thereof, as the posture detection device 18.

The operating

units

17a and 17b receive an operation input for operating the car 2 from the operator M. The operating portion 17a is provided in the pit 11, and the operating portion 17b is provided on the car upper panel surface 2 a. The operation unit 17a and the operation unit 17b are referred to as an operation unit 17 when they are not distinguished from each other.

The landing 6 is provided in each elevator stop floor where the car 2 can level. Each landing 6 is provided with a landing operating box 9 and the like. The landing operation box 9 performs so-called landing call registration or the like in accordance with an operation input by a user. The landing operating box 9 constitutes a so-called hib (hall Indicator box).

The hoisting machine 5 includes, for example, a main sheave 5a, a guide sheave 5b, and an electric motor 5c (motor) that generates power. The hoisting machine 5 is driven by the motor 5c, and the main sheave 5a connected to the motor 5c is driven to rotate. The hoisting machine 5 electrically hoists the main rope 4 by using a frictional force generated between the main sheave 5a and the main rope 4.

The hoisting machine 5 is provided with an encoder 5d (shown in fig. 3) for detecting the rotation speed and rotation direction of the motor 5 c. The encoder 5d outputs the detected rotation speed and rotation direction of the motor 5c to the control cabinet 10 as a pulse signal.

The main rope 4 is hung on a main sheave 5a, a guide sheave 5b, and the like of the hoisting machine 5. The main wire rope 4 is connected to the car 2 at one end and to the counterweight 3 at the other end.

The hoisting machine 5, the control cabinet 10, the brake 16, and the like are installed in a machine room 14 provided in an upper portion of the hoistway 7. The machine room 14 is separated from the hoistway 7 by a ceiling portion 7b of the hoistway 7.

The sensor 13 detects that the car 2 stops at a predetermined flat position of each floor or passes through the flat position. The sensors 13 are installed in the hoistway 7 at each floor. The sensor 13 transmits a detection signal to the control cabinet 10 when detecting the car 2.

The brake 16 is a device for braking the rotation operation of the hoisting machine 5. The brake 16 is, for example, a drum brake or a disc brake (a brake that contacts a brake base and brakes by friction) provided in the vicinity of the hoisting machine 5. The brake 16 may be, for example, a rope brake (a brake that sandwiches and brakes the main rope 4), and is not limited to these. The opening and closing operation of the brake 16 is performed by the control cabinet 10.

The control cabinet 10 is electrically connected to various sensors, detectors, the motor 5c of the hoisting machine 5, the landing operating box 9, the sensor 13, the brake 16, the operating unit 17, and other components of the elevator 1, and collectively controls the operations of the components. The control cabinet 10 controls driving of the hoisting machine 5 and moves the car 2 to a specified destination floor according to call registration, for example, based on an operation input to the landing operation box 9 from a user and an operation input to the operation unit 17 from an operator.

The control cabinet 10 determines the leveling order of the car 2 so that the car 2 appropriately moves and responds to each call based on car call registration, hall call registration, outputs from various sensors and detectors, the current moving direction (operating direction) of the car 2, and the like. The control cabinet 10 controls the driving of the hoisting machine 5 to move the car 2 to a desired floor.

Thus, the elevator 1 moves the car 2 vertically up and down in the hoistway 7 and moves to a landing 6 on any destination floor. When the car 2 is leveled at the landing 6 of the destination floor and the leveling is detected at the predetermined leveling position, the elevator 1 opens the door 12 of the landing 6 of the floor. Thus, a user waiting at the landing 6 can get into the car 2, and a user in the car 2 can get down to the landing 6.

The elevator maintenance work support system S of the present embodiment includes a detection device that detects the operator M. Fig. 2 is a diagram showing an example of the probe device 15 in the present embodiment. The detection device 15 is a light curtain or a laser irradiation device (laser scanner) capable of detecting the worker M.

The

detectors

15a and 15b are provided at the entrance and exit to and from the pit 11. In addition, when the pits 11 of a plurality of elevators 1 are adjacent, the

detectors

15a and 15b are also provided between the pit 11 and the pits of the adjacent machines. In the case where the detecting means 15a and the detecting means 15b are not distinguished, they are referred to as detecting means 15.

As shown in fig. 2, the detecting means 15 are provided in groups of two. When the operator M is detected, the

detection devices

15a and 15b send out a detection signal to the control cabinet 10.

The control cabinet 10 determines the moving direction of the worker M, that is, whether the worker M enters the pit 11 or exits the pit 11, based on the results of the detection of the worker M by the two

detection devices

15a and 15b, respectively.

The elevator maintenance work support system S may include a camera or the like as the detection device 15 that captures an image of the entrance to the pit 11 or the inside of the pit 11 to detect the operator M.

Next, a functional configuration of the elevator maintenance work support system S in the present embodiment will be described. Fig. 3 is a diagram showing an example of a functional configuration of the elevator maintenance work support system S in the present embodiment.

As shown in fig. 3, the elevator maintenance work support system S of the present embodiment includes a control cabinet 10, a car 2, a hoisting machine 5, a brake 16, a sensor 13, an encoder 5d, an operation portion 17, a posture detection device 18, and a detection device 15.

The control cabinet 10 includes an elevator maintenance support device 100, an elevator control unit 110, and a car position detection unit 111.

The elevator control unit 110 controls the operation of the hoisting machine 5 and the opening and closing operation of the brake 16. The elevator control unit 110 stops the operation of the elevator 1, selects an operation mode, and the like based on a command output from the control unit 105.

The elevator 1 has two operation modes, a normal operation mode and a spot inspection operation mode. The normal operation mode is a mode in which the elevator control unit 110 operates at a normal speed with respect to the car 2. When the maintenance inspection work or the like is not performed, the elevator control unit 110 operates the car 2 in the normal operation mode. The spot inspection operation mode is a mode in which the elevator control unit 110 operates at a speed slower than normal with respect to the car 2.

The car position detecting unit 111 detects the position of the car 2 based on the detection signal of the car 2 transmitted from the sensor 13 and the pulse signal output from the encoder 5 d. Specifically, the car position detection unit 111 detects which floor the car 2 is located on based on the detection signal of the car 2 transmitted from the sensor 13. Then, the car position detecting unit 111 calculates how much the car 2 is separated from the floor in the up-down direction based on the pulse signal output from the encoder 5 d.

The car position detection unit 111 transmits the detected position of the car 2 to the elevator maintenance work support device 100.

The car position detecting unit 111 may transmit the position of the car 2 upon receiving a signal of a transmission request from the elevator maintenance work supporting apparatus 100, or may transmit the position of the car 2 at regular intervals.

The elevator maintenance work support device 100 includes a storage unit 34, a counting unit 101, a calculating unit 102, a determining unit 103, a control command input unit 104, and a control unit 105.

The storage unit 34 includes a main storage device and an external storage device. Examples of the main Memory device include, but are not limited to, RAM (random access Memory), dram (dynamic RAM), and sram (static RAM). The external storage device is a hard disk, an optical disk, or a flash memory, but is not limited thereto.

The storage unit 34 stores a Database (DB)900 of the shaft dimensions and the predetermined dimensions of the clearance space. In addition, the storage unit 34 stores an OS (Operating System) program of the elevator maintenance operation support device 100, data necessary for executing the maintenance operation support program, data generated by the maintenance operation support program, and the like. The maintenance work support program is a program that realizes the above-described functional configurations in the elevator maintenance work support device 100.

The hoistway size is a design size of the hoistway 7, and includes information such as a depth, a lateral width, and a height of the hoistway 7. Further, when the inner wall of the hoistway 7 is not a flat surface but a protruding portion or a recessed portion is present in the hoistway 7, the dimensions thereof are also stored in the storage unit 34 as hoistway dimensions. The hoistway dimension is used when the calculation unit 102 described later calculates the dimension of the working space under the car.

In the elevator maintenance work support system S according to the present embodiment, the size of the under-car work space is calculated from the hoistway size, but the information used for the calculation is not limited to the hoistway size, and it is sufficient if the size of the under-car work space can be calculated.

The retreat space predetermined size Database (DB)900 is a database for storing a predetermined size of the retreat space for each worker M corresponding to the posture of the worker M. In the present embodiment, the escape space predetermined size Database (DB)900 stores a predetermined size of the under-car escape space.

The under-car evacuation space is a space that can be allocated to each of the workers M in the under-car working space. The under-car escape space is an example of the escape space in the present embodiment.

Fig. 4 is a diagram showing an example of a table structure of the backoff space predetermined size database 900 according to the present embodiment. As shown in fig. 4, the evacuation space-defining size database 900 includes "posture", "lower limit value of floor area", and "lower limit value of height" as items.

The item "posture" indicates the posture of the worker M. The posture of the worker M is classified into several categories. As shown in fig. 4, the evacuation space predetermined size database 900 of the present embodiment defines three postures, namely "upright", "crouch", and "recumbent". The classification of the posture of the worker M is not limited to this.

The term "lower limit value of the floor area" is a lower limit value of the floor area of the under-car evacuation space for each of the workers M in the under-car working space. The lower limit value of the floor area is set to a different value for each posture of the operator M.

The lower limit value of the floor area is defined by, for example, the dimensions of the width and depth of the floor of the working space under the car. In the example shown in fig. 4, when the posture of the worker M is "upright", the lower limit value of the lateral width of the floor surface of the working space under the car is "x 1", and the lower limit value of the depth is "y 1". When the posture of the worker M is "squat", the lower limit value of the lateral width of the floor surface of the working space under the car is "x 2", and the lower limit value of the depth is "y 2". When the posture of the worker M is "lying down", the lower limit value of the lateral width of the floor surface of the working space under the car is "x 3", and the lower limit value of the depth is "y 3".

x1 to x3 and y1 to y3 are predetermined positive constants. Further, the relationships x1 < x2 < x3 and y1 < y2 < y3 are established.

The lower limit value of the floor area is an example of the lower limit value of the area in the horizontal direction of the under-car escape space in the present embodiment. The definition of the lower limit value of the horizontal area of the car lower evacuation space is not limited to the definition of the lower limit value of the floor area shown in fig. 4.

The item "lower limit value of height" is a lower limit value of height of the cabin lower evacuation space in the cabin lower working space. The lower limit value of the height is set to a different value for each posture of the operator M. For example, in the example shown in fig. 4, when the posture of the worker M is "upright", the lower limit value of the height of the under-car evacuation space is "h 3". When the posture of the worker M is "squat down", the lower limit value of the height of the car evacuation space is "h 2". When the posture of the worker M is "lying on the side", the lower limit value of the height of the cabin evacuation space is "h 1".

h 1-h 3 are predetermined positive constants. Further, the relationship h1 < h2 < h3 holds.

The lower limit of the floor area and the lower limit of the height are examples of the predetermined size of the evacuation space. The storage unit 34 may store other size information as a predetermined size of the backoff space.

Returning to fig. 3, the counting unit 101 counts the number of workers M in the under-car working space based on the detection result of the detection device 15. For example, the counting unit 101 determines the moving direction of the worker M based on the detection results of the

detection devices

15a and 15 b. The counting unit 101 counts the number of workers M entering the pit 11, the number of workers M exiting the pit 11, and the number of workers M in the pit 11 at the present time. In the present embodiment, since the operator M performs work on the floor portion 7a, the number of the operators M in the pit 11 is the number of the operators M in the under-car work space.

The counter 101 notifies the controller 105 and the calculator 102 of whether or not the number of workers M in the pit 11 is 1 or more, that is, whether or not the workers M are present in the pit 11.

In the present embodiment, since it is sufficient if it can be determined whether or not the operator M is present in the pit 11, the counting unit 101 may be configured to detect only the presence or absence of the operator M without counting the number of the operators M in the pit 11.

The calculation unit 102 calculates the size of the under-car working space based on the position of the car 2 detected by the car position detection unit 111 and the hoistway size stored in the storage unit 34. Specifically, the calculation unit 102 calculates the height of the under-car working space and the floor area of the under-car working space as the size of the under-car working space.

For example, the calculation unit 102 may calculate the distance between the bottom 7a and the car 2 as the height of the under-car working space. The calculation unit 102 may calculate the floor area of the under-car working space based on the dimensions of the lateral width and depth of the bottom portion 7a of the hoistway 7 stored as the hoistway dimensions.

The height of the working space below the car is an example of the length of the working space in the vertical direction in the present embodiment. The floor area of the under-car working space is an example of the horizontal area of the working space in the present embodiment.

The calculation unit 102 sends the calculated size of the under-car working space to the determination unit 103.

The determination unit 103 acquires the posture of the worker M from the posture detection device 18. Further, the determination unit 103 determines that the evacuation space is equal to or smaller than the predetermined size when the size of the under-car working space calculated by the calculation unit 102 does not reach the predetermined size of the evacuation space stored in the evacuation space predetermined size database 900.

Specifically, the determination unit 103 determines that the evacuation space is equal to or smaller than a predetermined size when the height of the under-car working space calculated by the calculation unit 102 is equal to or smaller than the lower limit value of the height of the evacuation space corresponding to the posture of the operator M. When a plurality of workers M are present in the under-car working space, the determination unit 103 sets the lower limit value of the height corresponding to the highest posture as a reference. For example, when there are an upright worker M and a squat worker M in the under-car working space, the determination unit 103 compares the lower limit value "h 3" of the height corresponding to the posture "upright" with the height of the under-car working space.

Further, the determination unit 103 determines that the evacuation space is equal to or smaller than the predetermined size when the floor area of the under-car working space calculated by the calculation unit 102 is equal to or smaller than the lower limit value of the floor area of the evacuation space corresponding to the posture of the operator M. When a plurality of workers M are present in the under-car working space, the determination unit 103 compares the total value of the lower limit values of the floor area corresponding to the postures of the workers M in the under-car working space with the floor area of the under-car working space. The determination unit 103 secures a predetermined size of the evacuation space for each worker M based on the sum of the lower limit values of the floor area corresponding to the posture of the worker M in the under-car working space.

In the present embodiment, the determination unit 103 determines whether or not both the height of the working space below the car and the floor area reach a predetermined size, but only one of them may be a target of determination.

The determination unit 103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

The control command input unit 104 inputs a control command for operating the car 2 from the operation unit 17. The control command may be, for example, a command for specifying a floor to which the car is going, or a command for specifying only the traveling direction of the car 2. The control command input unit 104 sends the input control command to the control unit 105.

The control unit 105 determines whether or not the car 2 can be operated and the operation mode of the car 2.

Specifically, when the counting unit 101 notifies that the operator M is not present in the pit 11, the control unit 105 outputs an allowance command for allowing the operation in the normal operation mode to the elevator control unit 110.

When the operator M is present in the pit 11 and the determination unit 103 determines that the evacuation space is equal to or smaller than the predetermined size, the control unit 105 outputs an operation stop command for stopping the operation of the elevator 1 to the elevator control unit 110.

When the operator M is present in the pit 11 and the determination unit 103 determines that the evacuation space is larger than the predetermined size, the control unit 105 outputs an allowance command for allowing the operation in the spot inspection operation mode to the elevator control unit 110.

When an operation stop command for stopping the operation of the elevator 1 is output, the control unit 105 may transmit a control signal to a notification unit, a display unit, or the like, not shown, to generate a warning sound or display a warning message. The notification unit and the display unit, not shown, may be provided in the elevator maintenance work support apparatus 100 and the control cabinet 10, or may be provided in the hoistway 7 or the operation unit 17.

Next, a hardware configuration of the elevator maintenance work support device 100 in the present embodiment will be described. Fig. 5 is a diagram showing an example of the hardware configuration of the elevator maintenance work support device 100 in the present embodiment. As shown in fig. 5, the elevator maintenance work support device 100 includes a CPU31 (central processing unit), an input unit 32, a communication unit 33, and a storage unit 34, which are connected to each other by a bus 35.

The CPU31 performs arithmetic processing based on data and programs input from the devices connected via the bus 35, for example, the input unit 32, the communication unit 33, the storage unit 34, and the like. The CPU31 outputs the calculation result and a control signal reflecting the calculation result to each device connected via the bus 35, for example, the communication unit 33, the storage unit 34, and the like. Specifically, the CPU31 executes various controls by executing the OS and the maintenance work support program for the elevator 1.

The input unit 32 is, for example, an operation button, a keyboard, a mouse, a touch panel, or the like, but is not limited thereto.

The communication unit 33 is a device for connecting and communicating with an external device by wire or wireless. The communication unit 33 is, for example, a modem, a router, or a hub, but is not limited thereto. The elevator maintenance operation support device 100 communicates with an external device via the communication unit 33.

The control cabinet 10 main body has the same configuration as the elevator maintenance work support device 100 shown in fig. 5. Specifically, the system includes a CPU, an input unit, a communication unit, a storage unit, a bus, and the like. The elevator maintenance operation support device 100 may be incorporated in the control cabinet 10 in advance, or may be detachable.

Further, the elevator maintenance work support device 100 and the control cabinet 10 main body may be configured not by separate hardware but by sharing a single hardware configuration. In the case of this configuration, the functional units of the elevator maintenance work support device 100 are executed as software functions by the CPU of the control cabinet 10.

Next, a process performed by the elevator maintenance operation support system S in the present embodiment configured as described above will be described. Fig. 6 is a flowchart showing an example of a procedure of the processing performed by the elevator maintenance work support system S in the present embodiment. The processing of this flowchart is repeatedly executed at regular intervals. The execution interval of the processing is set according to the embodiment.

The detection device 15 detects the worker M who enters or exits the pit 11 (S1). The detection device 15 transmits the detection result to the elevator maintenance work support device 100 of the control cabinet 10.

The counter 101 determines the operator M entering the pit 11 and the operator M exiting the pit 11 based on the detection result of the detector 15. Then, the counting unit 101 counts the number of workers M in the pit 11 at the current time (S2).

When the number of workers M in pit 11 is 1 or more, that is, when there is a worker M in pit 11 (yes at S3), counting unit 101 transmits the number of workers M in pit 11 at the current time to calculating unit 102.

The car position detecting unit 111 detects the position of the car 2 based on the detection signal of the car 2 transmitted from the sensor 13 and the pulse signal output from the encoder 5d (S4). The car position detection unit 111 transmits the detected position of the car 2 to the elevator maintenance work support device 100.

The calculation unit 102 calculates the size of the under-car working space based on the position of the car 2 detected by the car position detection unit 111 and the hoistway size stored in the storage unit 34 (S5). The calculation unit 102 transmits the calculated size of the under-car working space to the determination unit 103.

Further, posture detecting device 18 detects the posture of worker M in pit 11 (S6). The posture detection device 18 transmits the detected posture of the worker M to the control cabinet 10.

The determination unit 103 determines whether or not the height of the under-car working space calculated by the calculation unit 102 is equal to or less than the lower limit value of the height corresponding to the highest posture among the postures of the operator M in the pit 11 (S7).

When the height of the under-car working space calculated by the calculation unit 102 is equal to or less than the lower limit value of the height corresponding to the highest posture among the postures of the operator M in the pit 11 (yes at S7), the determination unit 103 determines that the evacuation space is equal to or less than the predetermined size. The determination unit 103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

When the determination unit 103 determines that the evacuation space is equal to or smaller than the predetermined size, the control unit 105 outputs an operation stop command for stopping the operation of the elevator 1 to the elevator control unit 110 (S8).

Further, when the height of the under-car working space calculated by the calculation unit 102 is higher than the lower limit value of the height corresponding to the highest posture among the postures of the operator M in the pit 11 (no in S7), the determination unit 103 compares the floor area of the under-car working space with the lower limit value of the floor area (S9).

When the floor area of the under-car working space calculated by the calculation unit 102 is equal to or less than the total value of the lower limit values of the floor area of the under-car escape space corresponding to the posture of the operator M (yes at S9), the determination unit 103 determines that the escape space is equal to or less than the predetermined size. The determination unit 103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

When the floor area of the under-car working space calculated by the calculation unit 102 is larger than the total value of the lower limit values of the floor areas of the under-car evacuation spaces corresponding to the postures of the operator M in the pit 11 (no in S9), the determination unit 103 determines that the evacuation spaces are larger than the predetermined size. The determination unit 103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

When the determination unit 103 determines that the evacuation space is larger than the predetermined size, the control unit 105 outputs an allowance command for allowing the operation in the spot inspection operation mode to the elevator control unit 110 (S10).

When the number of workers M in pit 11 is less than 1, that is, when there is no worker M in pit 11 (no in S3), counter unit 101 notifies control unit 105 that there is no worker M in pit 11.

When notified by the counting unit 101 that the operator M is not present in the pit 11, the control unit 105 outputs an allowance command for allowing the operation in the normal operation mode to the elevator control unit 110 (S11).

In this way, in the elevator maintenance work support system S of the present embodiment, the detection device 15 detects the operator M who enters and exits the working space of the elevator 1. Further, the posture detection device 18 detects the posture of the worker M. Then, the control unit 105 outputs an operation stop command for stopping the operation of the elevator 1 when it is determined that the evacuation space for each of the working spaces M is equal to or smaller than a predetermined size based on the posture of the worker M detected by the posture detection device 18. That is, according to the elevator maintenance work support system S of the present embodiment, when a sufficient evacuation space is not secured, the operation of the elevator 1 is stopped by the control unit 105. Therefore, according to the elevator maintenance work support system S of the present embodiment, a sufficient retreat space corresponding to the posture of the operator M can be ensured more reliably in the work space in which the maintenance work of the elevator 1 is performed.

In the elevator maintenance work support system S according to the present embodiment, the calculation unit 102 calculates the size of the work space based on the size of the hoistway and the position of the car 2 detected by the car position detection unit 111. When the size of the working space does not reach the predetermined size, the determination unit 103 determines that the clearance space is equal to or smaller than the predetermined size. Therefore, according to the elevator maintenance work support system S of the present embodiment, even if the size of the working space varies depending on the position of the car 2, a sufficient retreat space corresponding to the posture of the operator M can be ensured more reliably.

In the elevator maintenance work support system S according to the present embodiment, the storage unit 34 stores, as predetermined dimensions, the lower limit value of the height of the evacuation space and the lower limit value of the horizontal area of the evacuation space. Further, the determination unit 103 determines that the size of the working space has not reached the predetermined size when the length of the working space in the vertical direction is equal to or less than the lower limit value of the height of the predetermined size corresponding to the posture of the operator M, or when the area of the working space in the horizontal direction is equal to or less than the lower limit value of the area corresponding to the posture of the operator M in the working space. Therefore, according to the elevator maintenance work support system S of the present embodiment, the escape space in which both the height direction and the horizontal direction of the work space reach the predetermined size can be more reliably ensured in accordance with the posture of the operator M.

In the elevator maintenance work support system S according to the present embodiment, the calculation unit 102 calculates the size of the under-car work space based on the size of the hoistway and the detected position of the car 2. The determination unit 103 determines that the evacuation space is equal to or smaller than a predetermined size when the size of the working space under the car is smaller than the predetermined size. Therefore, according to the elevator maintenance work support system S of the present embodiment, when the operator M works in the space under the car 2 including the pit 11, a sufficient retreat space corresponding to the posture of the operator M can be ensured more reliably.

(modification 1 of embodiment 1)

The method of calculating the size of the under-car working space in embodiment 1 described above is an example, and is not limited to this.

For example, in embodiment 1, the storage unit 34 stores the design dimensions of the hoistway 7 as hoistway dimensions, but the hoistway dimensions are not limited to this. Specifically, the storage unit 34 may store, as the hoistway size, a size of a space obtained by removing the size of the counterweight 3 from the design size of the hoistway 7.

In the area of the bottom 7a of the hoistway 7 below the counterweight 3, there is a possibility that the counterweight 3 will fall. Therefore, in the present modification, the region located below the counterweight 3 is removed from the floor area of the under-car working space.

In the case of this configuration, the calculation unit 102 calculates the floor area of the under-car working space by removing the region located below the counterweight 3 from the depth and width of the bottom portion 7a of the hoistway 7.

In the elevator maintenance work support system S of the present modification, since the area located below the counterweight 3 is removed from the floor area of the under-car work space, the size of the under-car work space can be calculated more accurately. Therefore, according to the elevator maintenance work support system S of the present modification, it is possible to more reliably ensure a sufficient retreat space corresponding to the posture of the operator M.

(modification 2 of embodiment 1)

The storage unit 34 may store, as the hoistway size, a size of a space obtained by removing the size of the counterweight 3 and the area where the bottom portion 7a is not exposed from the design size.

The region where the bottom portion 7a is not exposed is a region where the operation portion 17a, a bumper (not shown), and other components are provided on the bottom portion 7 a. The region where the bottom portion 7a is not exposed may not be usable by the worker M during the retraction. Therefore, in the present modification, the region below the counterweight 3 and the region where the bottom portion 7a is not exposed are removed from the under-car working space.

In the case of this configuration, the calculation unit 102 calculates the floor area of the under-car working space by removing the area under the counterweight 3 and the area where the bottom portion 7a is not exposed from the depth and width of the bottom portion 7a of the hoistway 7.

In the elevator maintenance work support system S of the present modification, the size of the under-car working space can be calculated more accurately because the region where the bottom portion 7a is not exposed is further removed. Therefore, according to the elevator maintenance work support system S of the present modification, it is possible to more reliably ensure a sufficient retreat space corresponding to the posture of the operator M.

(embodiment mode 2)

In the elevator maintenance work support system S according to embodiment 1, it is determined whether or not a sufficient under-car evacuation space that can be allocated to each of the operating personnel M is secured in the under-car working space. In the present embodiment, it is further determined whether or not a sufficient on-car escape space assignable to each of the workers M is secured in the on-car working space.

The above-car evacuation space is a space that can be allocated to each of the workers M in the above-car working space. The above-car escape space is an example of the escape space in the present embodiment.

The entire configuration of the elevator maintenance work support system S of the present embodiment is the same as that of embodiment 1 described with reference to fig. 1.

In the present embodiment, the detection device 15 described with reference to fig. 2 is provided not only at the entrance to the pit 11 but also at the entrance used when the operator M gets on the car upper floor surface 2 a. The elevator maintenance work support system S may include a camera or the like as the detection device 15, which captures an image of the doorway and the car upper plate surface 2a used when the operator M gets on the car upper plate surface 2a to detect the operator M.

Next, a functional configuration of the elevator maintenance work support system S in the present embodiment will be described. Fig. 7 is a diagram showing an example of a functional configuration of the elevator maintenance work support system S in the present embodiment. As shown in fig. 7, the elevator maintenance work support system S of the present embodiment includes a control cabinet 10, a car 2, a hoisting machine 5, a brake 16, a sensor 13, an encoder 5d, an operation portion 17, a posture detection device 18, and a detection device 15.

The car 2, the hoisting machine 5, the brake 16, the sensor 13, the encoder 5d, the operation portion 17, the posture detection device 18, and the detection device 15 have the same functions as those of embodiment 1.

The control cabinet 10 includes an elevator maintenance support device 100, an elevator control unit 110, and a car position detection unit 111. The elevator control unit 110 and the car position detection unit 111 have the same functions as those of embodiment 1.

The elevator maintenance work support device 100 of the present embodiment includes a storage unit 34, a counting unit 1101, a calculating unit 1102, a determining unit 1103, a control command input unit 104, and a control unit 105.

The control command input unit 104 and the control unit 105 have the same functions as those of embodiment 1.

The storage unit 34 of the present embodiment stores a Database (DB)900 of specified dimensions of hoistway dimensions, on-car dimensions, and evacuation space. The hoistway size and clearance space predetermined size Database (DB)900 is the same as the contents stored in the storage unit 34 of embodiment 1.

In the present embodiment, the same predetermined size is applied to the under-car evacuation space and the over-car evacuation space, but the predetermined size is not limited to this. For example, the escape space predetermined size Database (DB)900 may store different predetermined sizes between the under-car escape space and the over-car escape space.

The on-car size is a size of an area where the operator M performs work above the car 2. In the present embodiment, the car upper dimension is the width and depth of the car upper plate surface 2a based on the design dimension of the car 2. The on-car dimension may be an area of the on-car plate surface 2a based on a design dimension of the car 2. The on-car dimension is used when a calculation unit 1102 described later calculates the dimension of the on-car working space.

The counting unit 1101 of the present embodiment has the same function as that of embodiment 1, and counts the number of workers M in the working space on the car based on the detection result of the detection device 15. The counting unit 1101 may be configured not to count the number of workers M in the working space on the car but to detect only the presence or absence of the workers M.

The calculation unit 1102 calculates the size of the working space on the car based on the position of the car 2 detected by the car position detection unit 111, the hoistway size and the size on the car stored in the storage unit 34, in addition to having the same function as in embodiment 1. Specifically, the calculation unit 1102 calculates the height of the working space on the car and the floor area of the working space on the car as the size of the working space on the car.

For example, the calculation unit 1102 may calculate the distance between the top 7b of the hoistway 7 and the car 2 as the height of the working space above the car. The calculation unit 1102 may calculate the floor area of the working space on the car based on the dimensions of the width and depth of the car upper plate surface 2a stored as the car upper dimension.

The height of the working space above the car is an example of the length of the working space in the vertical direction in the present embodiment. The floor area of the working space on the car is an example of the horizontal area of the working space in the present embodiment.

The calculation unit 1102 transmits the calculated size of the working space on the car to the determination unit 1103.

The determination unit 1103 determines that the escape space is equal to or smaller than a predetermined size when the size of the work space on the car calculated by the calculation unit 1102 does not reach the predetermined size of the escape space stored in the escape space predetermined size database 900, except for having the same function as that of embodiment 1.

Specifically, the determination unit 1103 determines that the evacuation space is equal to or smaller than a predetermined size when the height of the work space on the car calculated by the calculation unit 1102 is equal to or smaller than the lower limit value of the height of the evacuation space corresponding to the posture of the worker M. When a plurality of workers M are present in the working space on the car, the determination unit 1103 sets the lower limit value of the height corresponding to the highest posture as a reference.

Further, the determination unit 1103 determines that the evacuation space is equal to or smaller than the predetermined size when the floor area of the work space on the car calculated by the calculation unit 1102 is equal to or smaller than the lower limit value of the floor area of the evacuation space corresponding to the posture of the operator M. When a plurality of workers M are present in the working space on the car, the determination unit 1103 compares the total value of the lower limit values of the floor area corresponding to the postures of the workers M in the working space on the car with the floor area of the working space on the car.

The determination unit 1103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

The hardware configuration of the elevator maintenance work support device 100 in the present embodiment is the same as that of embodiment 1 shown in fig. 5.

Next, a process performed by the elevator maintenance operation support system S in the present embodiment configured as described above will be described. Fig. 8 is a flowchart showing an example of a procedure of the processing performed by the elevator maintenance work support system S in the present embodiment. The processing of this flowchart is repeatedly executed at regular intervals. The execution interval of the processing is set according to the embodiment.

The process of counting the number of persons of the worker M who has detected S22 of the worker M who entered and exited the pit 11 from S21 is similar to the processes of S1 and S2 in the flowchart of embodiment 1 shown in fig. 6.

The processing when worker M is present in pit 11 (yes at S23, S24 to S30) is the same as the processing of S3 to S10 in embodiment 1.

If the number of workers M in the pit 11 is less than 1, that is, if there is no worker M in the pit 11 (no in S23), the detector 15 detects the worker M entering and exiting the working space on the car (S31). The detection device 15 transmits the detection result to the elevator maintenance work support device 100 of the control cabinet 10.

The counting unit 1101 determines the worker M entering the working space on the car and the worker M exiting from the working space on the car based on the detection result of the detection device 15. Then, the counting unit 1101 counts the number of workers M in the working space on the car at the present time (S32).

When the number of workers M in the on-car working space is 1 or more, that is, when there is a worker M in the on-car working space (yes in S33), the counting unit 1101 transmits the number of workers M in the on-car working space at the current time to the calculation unit 1102.

The car position detecting unit 111 detects the position of the car 2 based on the detection signal of the car 2 transmitted from the sensor 13 and the pulse signal output from the encoder 5d (S34). The car position detection unit 111 transmits the detected position of the car 2 to the elevator maintenance work support device 100.

The calculation unit 1102 calculates the size of the on-car working space based on the position of the car 2 detected by the car position detection unit 111, the hoistway size and the on-car size stored in the storage unit 34 (S35). The calculation unit 1102 transmits the calculated size of the working space on the car to the determination unit 1103.

The posture detecting device 18 detects the posture of the worker M in the working space on the car (S36). The posture detection device 18 transmits the detected posture of the worker M to the control cabinet 10.

When the height of the above-car working space calculated by the calculation unit 1102 is equal to or less than the lower limit value of the height corresponding to the highest posture of the postures of the worker M in the above-car working space (yes at S37), the determination unit 1103 determines that the evacuation space is equal to or less than the predetermined size. The determination unit 1103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

When the determination unit 1103 determines that the evacuation space is equal to or smaller than the predetermined size, the control unit 105 outputs an operation stop command for stopping the operation of the elevator 1 to the elevator control unit 110 (S28).

When the height of the above-car working space calculated by the calculation unit 1102 is higher than the lower limit value of the height corresponding to the highest posture of the postures of the worker M in the above-car working space (no in S37), the determination unit 1103 compares the floor area of the above-car working space with the lower limit value of the floor area (S38).

When the floor area of the work space on the car calculated by the calculation unit 1102 is equal to or less than the total value of the lower limit values of the floor area of the evacuation space corresponding to the posture of the operator M in the work space on the car (yes at S38), the determination unit 1103 determines that the evacuation space is equal to or less than the predetermined size. The determination unit 1103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

When the floor area of the work space on the car calculated by the calculation unit 1102 is larger than the total value of the lower limit values of the floor area of the evacuation space corresponding to the posture of the operator M (no in S38), the determination unit 1103 determines that the evacuation space is larger than the predetermined size. The determination unit 1103 sends the determination result of whether or not the backoff space is equal to or smaller than a predetermined size to the control unit 105.

When the determination unit 1103 determines that the evacuation space is larger than the predetermined size, the control unit 105 outputs an allowance command for allowing the operation in the spot inspection operation mode to the elevator control unit 110 (S30).

When the number of workers M in the on-car working space is less than 1, that is, when there is no worker M in the on-car working space (no in S33), the counting unit 1101 notifies the control unit 105 that there is no worker M in the on-car working space.

When the counted part 1101 notifies that the working person M is not present in the working space on the car, the control part 105 outputs an allowance command for allowing the operation in the normal operation mode to the elevator control part 110 (S39).

In the flowchart shown in fig. 8, if no worker M is present in pit 11 (no in S23), the processing of S31 to S38 is executed, but the flow of the processing is an example and is not limited thereto. For example, when a plurality of workers M perform maintenance work at the same time in the pit 11 and the working space on the car, a configuration may be adopted in which processes such as detection, counting, and the like of the workers M in the working space on the car are executed regardless of the presence or absence of the workers M in the pit 11.

In this way, in the elevator maintenance work support system S of the present embodiment, the calculation unit 1102 calculates the size of the work space on the car based on the size of the hoistway 7 and the detected position of the car 2. When the size of the working space on the car does not reach a predetermined size corresponding to the posture of the operator M, the determination unit 1103 determines that the retreat space is equal to or smaller than a predetermined size. Therefore, according to the elevator maintenance work support system S of the present embodiment, in addition to the effect of embodiment 1, when the worker M works on the car 2, a sufficient retreat space corresponding to the posture of the worker M can be ensured more reliably.

(modification of embodiment 2)

The method of calculating the working space on the car in embodiment 2 is an example, and is not limited to this.

For example, in embodiment 2, the storage portion 34 stores the width and depth of the car upper plate surface 2a based on the design size of the car 2 as the car upper size, but the car upper size is not limited to this. Specifically, the storage unit 34 may store, as the on-car dimension, a dimension obtained by removing an area where members, rails, and the like provided on the car upper plate surface 2a are provided from the design dimension of the car upper plate surface 2 a.

The region where the member, the fence, and the like are installed may not be usable by the worker M when the worker M is retracted. Therefore, in the present modification, the calculation unit 1102 calculates the area obtained by removing the installation area of the members, the fence, and the like from the area of the car upper plate surface 2a as the floor area of the car upper working space.

In the elevator maintenance work support system S of the present modification, since the installation area of the members, the fence, and the like provided on the car upper plate surface 2a is removed, the size of the work space on the car can be calculated more accurately. Therefore, according to the elevator maintenance work support system S of the present modification, it is possible to more reliably ensure a sufficient retreat space corresponding to the posture of the operator M.

(embodiment mode 3)

In the elevator maintenance work support systems S according to embodiments 1 and 2, it is determined whether or not a sufficient evacuation space corresponding to the posture of the operator M is secured based on the size of the work space and the predetermined size of the evacuation space corresponding to the posture of the operator M. In the present embodiment, a sufficient evacuation space is further ensured more reliably by determining the lower limit value of the height at which the car 2 can move when the worker M is present in the under-car working space.

Next, a functional configuration of the elevator maintenance work support system S in the present embodiment will be described. Fig. 9 is a diagram showing an example of a functional configuration of the elevator maintenance work support system S in the present embodiment. As shown in fig. 9, the elevator maintenance work support system S of the present embodiment includes a control cabinet 10, a car 2, a hoisting machine 5, a brake 16, a sensor 13, an encoder 5d, an operation portion 17, a posture detection device 18, and a detection device 15.

The car 2, the hoisting machine 5, the brake 16, the sensor 13, the encoder 5d, the operation portion 17, the posture detection device 18, and the detection device 15 have the same functions as those of the embodiments 1 and 2.

The control cabinet 10 includes an elevator maintenance support device 100, an elevator control unit 110, and a car position detection unit 111. The elevator control unit 110 and the car position detection unit 111 have the same functions as those of embodiments 1 and 2.

The elevator maintenance work support device 100 of the present embodiment includes a storage unit 34, a counting unit 1101, a calculating unit 1102, a determining unit 2103, a control command input unit 104, and a control unit 1105.

The counting unit 1101, the calculating unit 1102, and the control command input unit 104 have the same functions as those of embodiment 2.

The storage unit 34 of the present embodiment stores a Database (DB)900 of predetermined dimensions of hoistway dimensions, car upper dimensions, sinking position, and retreat space. The hoistway size, on-car size, and escape space predetermined size Database (DB)900 is the same as that stored in the storage unit 34 of embodiment 2.

The bottom-sinking position is a lower limit value of a height at which the car 2 can move when the operator M is present in the under-car working space. In addition, a state in which the position of the car 2 is equal to or lower than the bottom-sinking position may be referred to as "the car 2 sinks.

The determination unit 2103 of the present embodiment determines whether or not the position of the car 2 is equal to or lower than the floor position based on the position of the car 2 detected by the car position detection unit 111, except that the determination unit has the same function as that of embodiment 2. The determination unit 2103 transmits a determination result of whether or not the position of the car 2 is equal to or less than the floor position to the control unit 1105.

In addition, the control section 1105 outputs an operation stop command to stop the operation of the elevator 1 to the elevator control section 110 when the worker M is present in the under-car working space and the position of the car 2 is equal to or lower than the floor position, in addition to the same functions as those of embodiment 2. Further, the control section 1105 outputs a permission command for permitting operation in the spot check operation mode to the elevator control section 110 when the position of the car 2 is higher than the floor position even if the operator M is present in the under-car working space.

Next, a process performed by the elevator maintenance operation support system S in the present embodiment configured as described above will be described. Fig. 10 is a flowchart showing an example of a procedure of the processing performed by the elevator maintenance work support system S in the present embodiment. The processing of this flowchart is repeatedly executed at regular intervals. The execution interval of the processing is set according to the embodiment.

The processing from the detection of the worker M who enters or exits the pit 11 at S41 to the comparison of the floor area of the under-car working space at S49 with the lower limit value of the floor area corresponding to the posture of the worker M in the pit 11 is the same as the processing of S21 to S29 in the flowchart of embodiment 2 shown in fig. 8.

When the floor area of the under-car working space is larger than the total value of the lower limit values of the floor areas corresponding to the postures of the workers M in the pit 11 (no in S49), the determination unit 2103 determines whether or not the position of the car 2 is equal to or lower than the sinking position based on the detected position of the car 2 (S50).

When the position of the car 2 is equal to or lower than the floor position (yes in S50), the control unit 1105 outputs an operation stop command to stop the operation of the elevator 1 to the elevator control unit 110 (S48).

When the position of the car 2 is higher than the floor-sinking position (no in S50), the control unit 1105 outputs an allowance command to allow the elevator control unit 110 to operate in the spot inspection operation mode (S51).

The processing from the detection of the worker M entering and exiting the working space on the car at S52 to the output of the operation permission command in the normal operation mode at S60 is the same as the processing from S31 to S39 in the flowchart of embodiment 2 shown in fig. 8.

In this way, in the elevator maintenance work support system S of the present embodiment, the storage portion 34 stores the sinking position, which is the lower limit value of the height at which the car 2 can move when the operator M is present in the under-car working space. The determination unit 2103 determines whether or not the position of the car 2 is equal to or lower than the floor position based on the detected position of the car 2. Then, the control unit 1105 outputs an operation stop command when the position of the car 2 is equal to or lower than the floor position. Therefore, according to the elevator maintenance work support system S of the present embodiment, the distance from the bottom 7a of the hoistway 7 to the car 2 is kept constant or longer. Therefore, according to the elevator maintenance work support system S of the present embodiment, in addition to the effects of embodiments 1 and 2, a sufficient evacuation space can be ensured more reliably in the under-car working space.

For example, even when the elevator maintenance work support system S secures a space for evacuation according to the posture of the operator M, the operator M may suddenly change the posture and approach the car 2. Even in such a case, according to the elevator maintenance work support system S of the present embodiment, the height of the car 2 is not lower than the position of the sinking floor, and therefore a sufficient retreat space can be ensured more reliably.

(embodiment mode 4)

In the elevator maintenance work support system S according to embodiment 3, a sufficient retreat space is secured in the under-car working space by preventing the height of the car 2 from being lower than the bottom-sinking position. In the elevator maintenance work support system S of the present embodiment, the upper limit value of the height that the car 2 can move when the operator M is present in the working space on the car is further determined.

Next, a functional configuration of the elevator maintenance work support system S in the present embodiment will be described. Fig. 11 is a diagram showing an example of a functional configuration of the elevator maintenance work support system S in the present embodiment. As shown in fig. 11, the elevator maintenance work support system S of the present embodiment includes a control cabinet 10, a car 2, a hoisting machine 5, a brake 16, a sensor 13, an encoder 5d, an operation portion 17, a posture detection device 18, and a detection device 15.

The car 2, the hoisting machine 5, the brake 16, the sensor 13, the encoder 5d, the operation portion 17, the posture detection device 18, and the detection device 15 have the same functions as those of embodiments 1 to 3.

The control cabinet 10 includes an elevator maintenance support device 100, an elevator control unit 110, and a car position detection unit 111. The elevator control unit 110 and the car position detection unit 111 have the same functions as those of embodiments 1 to 3.

The elevator maintenance work support device 100 of the present embodiment includes a storage unit 34, a counting unit 1101, a calculating unit 1102, a determining unit 3103, a control command input unit 104, and a control unit 2105.

The counting unit 1101, the calculating unit 1102, and the control command input unit 104 have the same functions as those of embodiment 3.

The storage unit 34 of the present embodiment stores a Database (DB)900 of specified dimensions of hoistway dimensions, car upper dimensions, sinking bottom positions, punching top positions, and retreat spaces. The hoistway size, car upper size, sinking position, and retreat space predetermined size Database (DB)900 is the same as the contents stored in the storage unit 34 of embodiment 3.

The top impact position is an upper limit value of a height at which the car 2 can move when the operator M is present in the working space above the car. The state in which the position of the car 2 is equal to or higher than the position of the car 2 may be referred to as "car 2 thrust.

The determination unit 3103 of the present embodiment determines whether or not the position of the car 2 is equal to or greater than the ceiling-contacting position based on the position of the car 2 detected by the car position detection unit 111, in addition to having the same functions as those of embodiments 1 to 3. The determination unit 3103 sends the determination result of whether or not the position of the car 2 is equal to or greater than the impact position to the control unit 2105.

The control unit 2105 has the same functions as those of embodiments 1 to 3, and outputs an operation stop command to stop the operation of the elevator 1 to the elevator control unit 110 when the operator M is present in the working space on the car and the car 2 is at a position equal to or higher than the ceiling position. In addition, the control unit 2105 outputs an allowance command for allowing the operation in the spot check operation mode to the elevator control unit 110 when the position of the car 2 is lower than the punch-out position although the operator M is present in the on-car working space.

Next, a process performed by the elevator maintenance operation support system S in the present embodiment configured as described above will be described. Fig. 12 is a flowchart showing an example of a procedure of the processing performed by the elevator maintenance work support system S in the present embodiment. The processing of this flowchart is repeatedly executed at regular intervals. The execution interval of the processing is set according to the embodiment.

The processing from the detection of the worker M entering and exiting the pit 11 at S61 to the comparison between the floor area of the working space on the car at S79 and the lower limit value of the floor area corresponding to the posture of the worker M in the working space on the car is the same as the processing of S41 to S59 in the flowchart of embodiment 3 shown in fig. 10.

When the floor area of the working space on the car is larger than the total value of the lower limit values of the floor areas corresponding to the postures of the workers M in the working space on the car (no in S79), the determination unit 3103 determines whether or not the position of the car 2 is equal to or higher than the ceiling position based on the position of the car 2 detected by the car position detection unit 111 (S80). The determination unit 3103 transmits the determination result of whether or not the position of the car 2 is equal to or greater than the ceiling position to the control unit 2105.

When the position of the car 2 is equal to or higher than the ceiling position (yes in S80), the control unit 2105 outputs an operation stop command to stop the operation of the elevator 1 to the elevator control unit 110 (S68).

When the position of the car 2 is lower than the knock position (no in S80), the control unit 2105 outputs an allowance command for allowing the operation in the spot inspection operation mode to the elevator control unit 110 (S71).

The process of outputting the operation permission command in the normal operation mode at S81 is similar to the process at S60 in the flowchart of embodiment 3 shown in fig. 10.

In this way, in the elevator maintenance work support system S of the present embodiment, the storage unit 34 also stores the impact position, which is the upper limit value of the height at which the car 2 can move when the operator M is present in the on-car work space. The determination unit 3103 determines whether or not the position of the car 2 is equal to or greater than the ceiling position, based on the detected position of the car 2. When the position of the car 2 is equal to or higher than the top impact position, the control unit 2105 outputs an operation stop command. Therefore, according to the elevator maintenance work support system S of the present embodiment, the distance from the ceiling portion 7b of the hoistway 7 to the car 2 is kept constant or longer.

Therefore, according to the elevator maintenance work support system S of the present embodiment, in addition to the effects of embodiments 1 to 3, a sufficient retreat space can be ensured more reliably in the working space above the car.

(embodiment 5)

In the elevator maintenance work support systems S according to embodiments 1 to 4, when it is determined that the retreat space of each worker M in the working space is equal to or smaller than a predetermined size, the operation of the car 2 is stopped. The elevator maintenance work support system S of the present embodiment permits the operation of the car 2 in the direction in which the working space is expanded after stopping the car 2.

Next, a functional configuration of the elevator maintenance work support system S in the present embodiment will be described. Fig. 13 is a diagram showing an example of a functional configuration of the elevator maintenance work support system S in the present embodiment. As shown in fig. 13, the elevator maintenance work support system S of the present embodiment includes a control cabinet 10, a car 2, a hoisting machine 5, a brake 16, a sensor 13, an encoder 5d, an operation portion 17, a posture detection device 18, and a detection device 15.

The car 2, the hoisting machine 5, the brake 16, the sensor 13, the encoder 5d, the operation portion 17, the posture detection device 18, and the detection device 15 have the same functions as those of embodiments 1 to 4.

The control cabinet 10 includes an elevator maintenance support device 100, an elevator control unit 110, and a car position detection unit 111. The elevator control section 110 and the car position detection section 111 have the same functions as those of embodiments 1 to 4.

The elevator maintenance work support device 100 of the present embodiment includes a storage unit 34, a counting unit 1101, a calculating unit 1102, a determining unit 3103, a control command input unit 1104, a control unit 3105, and an operation direction determining unit 106.

The counting unit 1101, the calculating unit 1102, and the determining unit 3103 have the same functions as those of embodiment 4. The storage unit 34 stores the same contents as the storage unit 34 of embodiment 4.

The control command input unit 1104 inputs a control command for operating the car 2 from the operation unit 17. As in embodiments 1 to 4, the control command may be a command for specifying a destination floor or a command for specifying only the operation direction of the car 2. Then, the control command input unit 1104 transmits the input control command to the control unit 3105 and the operation direction determination unit 106.

The operation direction determination unit 106 determines the operation direction of the car 2 indicated by the control command acquired from the control command input unit 1104. The running direction is either an upward direction or a downward direction. When the control command is a command for specifying a destination floor, the operation direction determination unit 106 may determine the operation direction of the car 2 by comparing the current position of the car 2 with the destination floor. The operation direction determination unit 106 transmits the acquired operation direction to the control unit 3105.

The control unit 3105 performs control according to the operation direction of the car 2 determined by the operation direction determination unit 106, in addition to the same functions as those of embodiments 1 to 4. When determining that the retreat space of each worker M in the working space is equal to or smaller than a predetermined size, the control unit 3105 of the present embodiment stops the car 2 and permits operation in the operation direction in which the working space is expanded.

Specifically, when the position of the car 2 is equal to or lower than the bottom position, the control unit 3105 outputs a permission command for permitting operation of the car 2 in the upper operation direction to the elevator control unit 110 after stopping the car 2. When the position of the car 2 is equal to or higher than the ceiling position, the control unit 3105 outputs a permission command for permitting operation of the car 2 in the lower operation direction to the elevator control unit 110 after stopping the car 2.

In other words, the control unit 3105 of the present embodiment permits the car 2 to move in the operation direction in which the bottom of the car 2 is lowered or the top of the car 2 is lifted.

When the working space does not reach the predetermined size, the control unit 3105 permits the operation in the operation direction in which the working space is expanded after stopping the car 2. Specifically, the control unit 3105 stops the car 2 when the size of the under-car working space does not reach the predetermined size stored in the escape space predetermined size Database (DB) 900. In this case, the control unit 3105 outputs an allowance command for allowing the operation of the car 2 with the operation direction being the upper direction to the elevator control unit 110.

The control unit 3105 stops the car 2 when the size of the working space on the car does not reach the predetermined size stored in the escape space predetermined size Database (DB) 900. In this case, the control unit 3105 outputs an allowance command for allowing the operation of the car 2 whose operation direction is downward to the elevator control unit 110.

Next, a process performed by the elevator maintenance operation support system S in the present embodiment configured as described above will be described. Fig. 14A and 14B are flowcharts showing an example of the procedure of the processing performed by the elevator maintenance work support system S in the present embodiment. The processing of this flowchart is repeatedly executed at regular intervals. The execution interval of the processing is set according to the embodiment.

The processing from S91 to S61 to S70 in the flowchart of embodiment 4 shown in fig. 12 is the same as the processing from S100 to S91 when the worker M entering or exiting the pit 11 detects the output of the operation stop command.

After outputting the operation stop command (S100), the control unit 3105 determines whether or not the control command input unit 1104 inputs the control command from the operation unit 17 (S101).

When the control command input unit 1104 does not input a control command from the operation unit 17 (no in S101), the control unit 3105 repeats the process in S101.

When the control command input unit 1104 inputs a control command from the operation unit 17 (yes in S101), the control command input unit 1104 transmits the input control command to the control unit 3105 and the operation direction determination unit 106. The operation direction determination unit 106 determines the operation direction of the car 2 indicated by the control command acquired from the control command input unit 1104. The operation direction determination unit 106 transmits the acquired operation direction to the control unit 3105.

The control unit 3105 determines whether or not the operation direction included in the control command is the direction in which the working space is enlarged (S102). When the operation direction included in the control command is a direction in which the working space is expanded (yes at S102), the control unit 3105 outputs a permission command for permitting the operation in the spot inspection operation mode to the elevator control unit 110 (S103).

When the operation direction included in the control command is not the direction in which the working space is expanded (no in S102), the control unit 3105 repeats the processing in S101 and S102.

The processing from the detection of the operator M entering and exiting the on-car working space at S104 shown in fig. 14B to the output of the operation permission command at S113 in the normal operation mode is similar to the processing at S72 to S81 in the flowchart of embodiment 4 shown in fig. 12.

The steps of the processing shown in the flowcharts of fig. 14A and 14B are examples, and are not limited to these. For example, the control unit 3105 and the operation direction determination unit 106 may perform the processing of S101 and S102 only when the car 2 is sinking (yes in S99 in fig. 14A) or pushing (yes in S112 in fig. 14B).

In the elevator maintenance work support system S of the present embodiment, the control command input unit 1104 inputs a control command for operating the car 2. Then, the operation direction determination unit 106 determines the operation direction of the car 2 indicated by the control command. The control unit 3105 outputs a permission command for permitting operation of the car 2 with the operating direction being upward when the position of the car 2 is equal to or lower than the bottom-down position, and outputs a permission command for permitting operation of the car 2 with the operating direction being downward when the position of the car 2 is equal to or higher than the top-down position. Therefore, according to the elevator maintenance work support system S of the present embodiment, in addition to the effects of embodiments 1 to 4, convenience in maintenance work can be improved. For example, when the car 2 stops due to sinking or heading, the operator M can input a control command to the operation unit 17 to quickly move the car 2 in the operation direction of sinking or heading releasing.

Further, according to the elevator maintenance work support system S of the present embodiment, the operation of the car 2 in the direction in which the floor-sinking or roof-heading progresses is prevented, and thus a sufficient retreat space can be ensured for each of the operating personnel M more reliably. For example, according to the elevator maintenance work support system S of the present embodiment, when the operator M erroneously inputs a control command for moving the car 2 in the operation direction in which the floor-sinking or roof-rushing progresses, the car 2 can be prevented from moving.

In addition, during maintenance work of the elevator 1, the posture of the operator M in the working space is changed, and the size of the working space may not reach the predetermined size of the evacuation space corresponding to the posture of the operator M. In such a case, according to the elevator maintenance work support system S of the present embodiment, the operator M can input a control command to the operation unit 17 to quickly move the car 2 in the operation direction in which the working space is enlarged.

(embodiment mode 6)

The elevator maintenance work support system S according to embodiments 3 to 5 outputs an operation stop command when the car 2 is lowered to the bottom or is pushed to the top. The elevator maintenance work support system S of the present embodiment controls the elevator 1 in consideration of the sliding distance between the output of the operation stop command and the stop of the car 2, so that a sufficient evacuation space can be ensured for each of the operating personnel M more reliably.

Next, a functional configuration of the elevator maintenance work support system S in the present embodiment will be described. Fig. 15 is a diagram showing an example of a functional configuration of the elevator maintenance work support system S in the present embodiment. As shown in fig. 15, the elevator maintenance work support system S of the present embodiment includes a control cabinet 10, a car 2, a hoisting machine 5, a brake 16, a sensor 13, an encoder 5d, an operation portion 17, a posture detection device 18, and a detection device 15.

The car 2, the hoisting machine 5, the brake 16, the sensor 13, the encoder 5d, the operation portion 17, the posture detection device 18, and the detection device 15 have the same functions as those of embodiments 1 to 5.

The control cabinet 10 includes an elevator maintenance support device 100, an elevator control unit 110, and a car position detection unit 111. The elevator control section 110 and the car position detection section 111 have the same functions as those of embodiments 1 to 5.

The elevator maintenance work support device 100 of the present embodiment includes a storage unit 34, a counting unit 1101, a calculating unit 2102, a determining unit 3103, a control command input unit 1104, a control unit 4105, an operation direction determining unit 106, and an operation speed calculating unit 107.

The counting unit 1101, the determination unit 3103, the control command input unit 1104, and the operation direction determination unit 106 have the same functions as those of embodiment 5.

The storage unit 34 of the present embodiment stores a Database (DB)900 of specified dimensions of hoistway dimensions, car upper dimensions, sinking bottom position, punching top position, sliding distance, operating speed, and retreat space. The hoistway size, car upper size, sinking position, impact position, and retreat space predetermined size Database (DB)900 is the same as the contents stored in the storage unit 34 of embodiment 5.

The sliding distance is a distance moved by the control unit 4105 until the car 2 stops after the operation stop command is output to the elevator control unit 110.

The operation speed is the operation speed (moving speed) of the car 2 at the time when the control unit 4105 outputs the operation stop command to the elevator control unit 110.

The storage unit 34 stores actual values of the sliding distance and the operation speed when the control unit 4105 outputs the operation stop command to the elevator control unit 110, for example. Alternatively, the storage unit 34 may store the sliding distance and the operating speed in advance in association with each other.

The operation speed calculation unit 107 calculates the operation speed of the car 2 at the current time. Specifically, the operating speed calculating section 107 receives the pulse signal output from the encoder 5 d. The operating speed calculation unit 107 calculates the operating speed of the car 2 by calculating the rotational speed of the motor 5c based on the pulse signal. Alternatively, the operation speed calculation unit 107 may acquire the position of the car 2 from the car position detection unit 111 and calculate the operation speed of the car 2 from the movement distance at every time interval.

The operation speed calculation unit 107 may repeatedly calculate the operation speed of the car 2 at regular intervals, or may calculate the operation speed at the time when a trigger is obtained from another functional unit. For example, the operating speed calculating unit 107 may calculate the operating speed when the judging unit 3103 notifies that the car 2 does not sink or rise when the worker M is present in the under-car working space or the on-car working space.

The operating speed calculation unit 107 sends the calculated operating speed to the calculation unit 2102. The operation speed calculation unit 107 may store the calculated operation speed in the storage unit 34.

The calculation unit 2102 of the present embodiment calculates the estimated sliding distance based on the current operating speed calculated by the operating speed calculation unit 107, the stored sliding distance, and the stored operating speed, in addition to having the same functions as those of embodiments 1 to 5.

The estimated sliding distance is an estimated distance until the car 2 is moved to a stop when the operation stop command is output from the control unit 4105 at the present time.

The calculation unit 2102 transmits the calculated estimated sliding distance to the control unit 4105. The calculation unit 2102 may store the calculated estimated sliding distance in the storage unit 34.

The control unit 4105 of the present embodiment performs control of the car 2 based on the position of the car 2 and the estimated sliding distance, in addition to the same functions as those of embodiments 1 to 5. Specifically, when the position obtained by subtracting the estimated sliding distance from the position of the car 2 detected by the car position detection unit 111 is equal to or less than the floor position, the control unit 4105 outputs an operation stop command for stopping the operation of the elevator 1 to the elevator control unit 110. When the position obtained by adding the estimated sliding distance to the position of the car 2 detected by the car position detecting unit 111 is equal to or greater than the impact position, the control unit 4105 outputs an operation stop command for stopping the operation of the elevator 1 to the elevator control unit 110.

Next, a process performed by the elevator maintenance operation support system S in the present embodiment configured as described above will be described. Fig. 16A and 16B are flowcharts showing an example of the procedure of the processing performed by the elevator maintenance work support system S in the present embodiment. The processing of this flowchart is repeatedly executed at regular intervals. The execution interval of the processing is set according to the embodiment.

The process of comparing the position of the car 2 and the position of the sinking of the car at S133 detected by the worker M who entered and exited the pit 11 at S121 is similar to the processes of S91 to S99 in the flowchart of embodiment 5 shown in fig. 14A.

When the position of the car 2 is higher than the bottom-sinking position (no in S133), the operation speed calculation unit 107 calculates the operation speed of the car 2 at the current time. The operating speed calculation unit 107 sends the calculated operating speed to the calculation unit 2102.

The calculation unit 2102 calculates an estimated sliding distance based on the current operating speed calculated by the operating speed calculation unit 107, the stored sliding distance, and the stored operating speed (S134). The calculation unit 2102 transmits the calculated estimated sliding distance to the control unit 4105.

The control unit 4105 determines whether or not the position obtained by subtracting the estimated sliding distance from the position of the car 2 detected by the car position detection unit 111 is equal to or less than the sinking position (S135).

When the position obtained by subtracting the estimated sliding distance from the position of the car 2 detected by the car position detection unit 111 is equal to or less than the floor position (yes in S135), the control unit 4105 outputs an operation stop command for stopping the operation of the elevator 1 to the elevator control unit 110 (S128).

When the position obtained by subtracting the estimated sliding distance from the position of the car 2 detected by the car position detecting unit 111 is higher than the floor position (no in S135), the control unit 4105 outputs a permission command for permitting the operation in the spot detection operation mode to the elevator control unit 110 (S131).

The processing from the detection of the worker M entering and exiting the working space on the car at S136 to the comparison of the position of the car 2 and the position of the impact top at S144 shown in fig. 16B is similar to the processing at S104 to S112 in the flowchart of embodiment 5 shown in fig. 14B.

When the position of the car 2 is lower than the position of the ram (no in S144), the operation speed calculation unit 107 calculates the operation speed of the car 2 at the current time. The calculation unit 2102 calculates an estimated sliding distance based on the current operating speed calculated by the operating speed calculation unit 107, the stored sliding distance, and the stored operating speed (S145). The calculation unit 2102 transmits the calculated estimated sliding distance to the control unit 4105.

The control unit 4105 determines whether or not the position obtained by adding the estimated sliding distance to the position of the car 2 detected by the car position detection unit 111 is equal to or greater than the impact position (S146).

When the position obtained by adding the estimated sliding distance to the position of the car 2 detected by the car position detecting unit 111 is equal to or greater than the ceiling position (yes in S146), the control unit 4105 outputs an operation stop command for stopping the operation of the elevator 1 to the elevator control unit 110(S128 in fig. 16A).

When the position of the car 2 detected by the car position detection unit 111 added with the estimated sliding distance is lower than the impact position (no in S146), the control unit 4105 outputs a permission command for permitting operation in the spot detection operation mode to the elevator control unit 110(S131 in fig. 16A).

The process of outputting the operation permission command in the normal operation mode at S147 shown in fig. 16B is similar to the process at S113 in the flowchart of embodiment 5 shown in fig. 14B.

In the elevator maintenance work support system S of the present embodiment, the operating speed calculating section 107 calculates the operating speed of the car 2. In addition, the storage unit 34 stores the sliding distance and the operating speed of the car. The calculation unit 2102 calculates an estimated sliding distance based on the current operating speed, the stored sliding distance, and the stored operating speed. The control unit 4105 outputs an operation stop command when the position obtained by subtracting the estimated sliding distance from the detected position of the car 2 is equal to or less than the bottom-sinking position, or when the position obtained by adding the estimated sliding distance to the detected position of the car 2 is equal to or more than the top-rushing position. Therefore, according to the elevator maintenance work support system S of the present embodiment, in addition to the effects of embodiments 1 to 5, a sufficient retreat space can be ensured more reliably for each of the operating personnel M.

In the elevator maintenance work support system S according to the present embodiment, the estimated sliding distance is used for the comparison between the position of the car 2 and the position of the sinking floor or the position of the impacting ceiling. For example, the calculation unit 2102 may calculate the distance between the position obtained by subtracting the estimated sliding distance from the detected position of the car 2 in the height direction and the bottom 7a of the hoistway 7 stored as the hoistway size as the height of the under-car working space. The calculation unit 2102 may calculate the distance between the position obtained by adding the estimated sliding distance to the detected position of the car 2 in the height direction and the top 7b of the hoistway 7 stored as the hoistway size as the height of the working space on the car. In the case of this configuration, the calculation unit 2102 can calculate the size of the work space in consideration of the sliding distance. Therefore, in the case of this configuration, the elevator maintenance work support system S can more reliably secure a sufficient retreat space.

As described above, according to the elevator maintenance work support systems S of embodiments 1 to 6, a sufficient retreat space corresponding to the posture of the operator M can be ensured more reliably in the work space in which the maintenance work of the elevator 1 is performed.

The maintenance work support program executed by the elevator maintenance work support device 100 according to each of the above embodiments is provided by being loaded in advance in a ROM or the like. The maintenance work support program executed by the elevator maintenance work support apparatus 100 according to each of the above-described embodiments may be provided by recording a file in an attachable or executable format on a computer-readable recording medium such as a CD-ROM, a Flexible Disk (FD), or a CD-R, DVD (Digital Versatile Disk).

Further, the maintenance work support program executed by the elevator maintenance work support device 100 according to each of the above-described embodiments may be provided by being downloaded via a network while being held on a computer connected to a network such as the internet. Further, the maintenance work support program executed by the elevator maintenance work support device 100 according to each of the above embodiments may be provided or distributed via a network such as the internet.

The maintenance work support program executed in the elevator maintenance work support device 100 according to each of the above-described embodiments is a module configuration including the above-described respective components (the counting unit, the calculating unit, the determining unit, the control command input unit, the control unit, the operation direction determining unit, and the operation speed calculating unit), and is actually configured as hardware, and a CPU (processor) reads out the maintenance work support program from the ROM and executes the maintenance work support program, whereby the respective components are mounted on the main storage device, and the counting unit, the calculating unit, the determining unit, the control command input unit, the control unit, the operation direction determining unit, and the operation speed calculating unit are generated in the main storage device.

The elevator control program executed by the control cabinet 10 of each of the above embodiments is provided by being loaded in advance in a ROM or the like. The elevator control program executed in the control cabinet 10 according to each of the above embodiments may be provided by recording a file in an attachable or executable format on a computer-readable recording medium such as a CD-ROM, a flexible disk, or a CD-R, DVD.

The elevator control program executed in the control cabinet 10 according to each of the above embodiments may be stored in a computer connected to a network such as the internet and downloaded via the network to be provided. The elevator control program executed in the control cabinet 10 of each of the above embodiments may be provided or distributed via a network such as the internet.

The elevator control program executed in the control cabinet 10 of each of the above embodiments is a module configuration including the above-described respective units (elevator control unit, car position detecting unit), and as an actual hardware configuration, the CPU reads the elevator control program from the ROM and executes the elevator control program, whereby the respective units are loaded on the main storage device, and the elevator control unit and the car position detecting unit are generated on the main storage device.

Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Claims

1. An elevator maintenance work support system for supporting maintenance work performed by an elevator operator, comprising:

a car of the elevator;

the elevator maintenance work support system is characterized by further comprising:

a detection device for detecting the operator who enters or exits the working space between the bottom or top of the hoistway of the elevator and the car;

a posture detection device for detecting the posture of the operator; and

and a control unit that outputs an operation stop command for stopping the operation of the elevator when it is determined that, based on the detected posture of the operator, a retreat space indicating a space that can be allocated to each of the operators in the work space is equal to or smaller than a predetermined size.

2. The elevator maintenance work support system according to claim 1, further comprising:

a storage unit that stores a dimension of the hoistway and a predetermined dimension of the evacuation space corresponding to a posture of the operator;

a car position detecting unit for detecting a position of the car;

a calculation unit that calculates a size of the working space based on a size of the hoistway and the detected position of the car; and

and a determination unit configured to determine that the retreat space is equal to or smaller than a predetermined size when the size of the working space does not reach the predetermined size.

3. The elevator maintenance work support system according to claim 2, wherein,

the storage unit stores, as the predetermined size, a lower limit value of the height of the evacuation space and a lower limit value of the horizontal area of the evacuation space,

the determination unit determines that the size of the working space has not reached the predetermined size when a vertical length of the working space is equal to or less than a lower limit value of a height of the predetermined size corresponding to the posture of the operator or when a horizontal area of the working space is equal to or less than a lower limit value of an area corresponding to the posture of the operator in the working space.

4. The elevator maintenance work support system according to claim 2 or 3, wherein,

the working space includes an under-car working space extending from a bottom of the hoistway to the car,

the calculation unit calculates a size of a working space under the car based on the size of the hoistway and the detected position of the car,

the judgment unit judges that the retreat space is equal to or smaller than a predetermined size when the size of the working space under the car is smaller than the predetermined size.

5. The elevator maintenance work support system according to claim 4, wherein,

the working space includes an on-car working space extending from a top of the hoistway to the car,

the calculation unit calculates a size of a working space on the car based on the size of the hoistway and the detected position of the car,

the judgment unit judges that the retreat space is equal to or smaller than a predetermined size when the size of the working space on the car is smaller than the predetermined size.

6. The elevator maintenance work support system according to claim 5, wherein,

the storage part also stores a sinking position which is a lower limit value of the height that the cage can move under the condition that the operator exists in the cage lower working space,

the determination unit determines whether or not the position of the car is equal to or lower than the floor position based on the detected position of the car,

the control unit outputs the operation stop command when the position of the car is equal to or lower than the floor position.

7. The elevator maintenance work support system according to claim 6, wherein,

the storage part also stores a thrust position which is an upper limit value of a height that the car can move when the operator is in the working space on the car,

the determination unit determines whether or not the position of the car is equal to or greater than the thrust position based on the detected position of the car,

the control unit outputs the operation stop command when the position of the car is equal to or greater than the jack position.

8. The elevator maintenance work support system according to claim 7, further comprising:

a control command input unit for inputting a control command for operating the car; and

an operation direction determination unit for determining an operation direction of the car indicated by the control command,

the control unit outputs an approval command: and permitting operation of the car with the operating direction being upward when the position of the car is equal to or lower than the bottom-sinking position, and permitting operation of the car with the operating direction being downward when the position of the car is equal to or higher than the top-rushing position.

9. The elevator maintenance work support system according to claim 7 or 8, wherein,

further comprises an operating speed calculating section for calculating the operating speed of the car,

the storage unit further stores a sliding distance, which is a distance traveled until the car stops after the operation stop command is output, and an operation speed of the car at a time point when the operation stop command is output,

the calculation unit calculates an estimated sliding distance, which is an estimated distance until the car stops moving when the operation stop command is output at the current time, based on the operating speed at the current time, the stored sliding distance, and the stored operating speed,

the control unit outputs the operation stop command when a position obtained by subtracting the estimated sliding distance from the detected position of the car is equal to or less than the bottom-down position, or when a position obtained by adding the estimated sliding distance to the detected position of the car is equal to or more than the top-down position.