WO2022176114A1

WO2022176114A1 - Braking distance measurement system, elevator, and braking distance measurement method

Info

Publication number: WO2022176114A1
Application number: PCT/JP2021/006155
Authority: WO
Inventors: 俊介大野; 智史山▲崎▼; 陽太大森; 一輝宮野; 和広國武; 平長谷川
Original assignee: 三菱電機ビルテクノサービス株式会社
Priority date: 2021-02-18
Filing date: 2021-02-18
Publication date: 2022-08-25
Also published as: JPWO2022176114A1; CN116783131B; JP7264323B2; CN116783131A

Abstract

Provided are a measurement system, an elevator, and a measurement method, whereby it is possible to more accurately measure braking distances. A measurement system (29) for an elevator (1), wherein a travel control unit (23) causes a car (8) to pass through the boundary of a door zone at low speed, so that a protection device (28) activates a brake device (10) to stop the car (8). Then the travel control unit (23) causes the car (8) to travel at a very low speed that does not cause slip of a main rope (7) against a drive sheave (13) so that the car (8) is turned back from the stop position to the boundary. A rotation measurement unit (22) measures the amount of rotation of the drive sheave (13) from the time the car (8) starts traveling at a very low speed at the stop position until the car (8) reaches the boundary. A braking distance calculation unit (30) calculates the braking distance by the protection device (28) on the basis of the amount of rotation of the drive sheave (13) measured by the rotation measurement unit (22) at this time.

Description

Braking Distance Measurement Systems, Elevators, and Braking Distance Measurement Methods

The present disclosure relates to a braking distance measurement system, an elevator, and a braking distance measurement method.

Patent Document 1 discloses an example of an elevator. An elevator comprises a car, a main rope, a drive motor and a braking device. The main rope supports the load of the car. The main rope is wrapped around the drive sheave. A drive motor drives the car through the main ropes by rotation of the drive sheaves. The braking device brakes the running of the car by braking the rotation of the drive sheave. In an elevator, the braking distance of the car is measured when the brake system is operated while the car is running as a brake system inspection.

WO2017/033238

However, in the elevator of Patent Document 1, slippage of the main rope with respect to the drive sheave may occur when the braking device is activated. Therefore, an error due to slippage may occur in the measured braking distance.

The present disclosure relates to solving such problems. The present disclosure provides a measurement system, an elevator, and a measurement method that can measure braking distances more accurately.

A braking distance measurement system according to the present disclosure includes a car, a main rope that supports the load of the car, a drive sheave around which the main rope is wound, and a rotation of the drive sheave to cause the car to travel through the main rope. a drive motor, a braking device for braking the car by braking the rotation of the drive sheave, a detector for detecting whether the position of the car is in a preset region, and a detector for detecting whether the car is in a preset region, and the car travels in the region. applied to an elevator having a protection device that actuates the braking device to stop the car when the detector detects that the boundary of the lower than the first speed, which is preset as a speed at which slippage of the main rope with respect to the drive sheave does not occur after the brake device is actuated by the protection device to stop the car by passing through a travel control unit for causing the car to travel at a second speed so as to return from the stop position where the car stops to the boundary, and when the travel control unit causes the car to travel at the second speed, the car is a rotation measuring unit that measures the amount of rotation of the drive sheave from when the car starts running at the stop position until the car reaches the boundary; and when the running control unit causes the car to run at the second speed. a braking distance calculation unit that calculates a braking distance by the protective device based on the amount of rotation of the drive sheave measured by the rotation measurement unit.

An elevator according to the present disclosure includes a car, a main rope that supports the load of the car, a drive sheave around which the main rope is wound, and a drive that causes the car to travel through the main rope by rotation of the drive sheave. a motor, a braking device for braking the traveling of the car by braking the rotation of the drive sheave, a detector for detecting whether the position of the car is in a preset region, and a a protective device for actuating the braking device to stop the car when the detector detects that the boundary of an area has been passed; and allowing the car to pass the boundary at a first preset speed. and the protective device actuates the braking device to stop the car, and then at a second speed that is lower than the first speed preset as a speed at which the main rope does not slip on the drive sheave. a travel control unit for causing the car to travel so as to return from a stop position where the car stops to the boundary, and a travel control unit for causing the car to travel at the second speed, the car being at the stop position. a rotation measuring unit that measures the amount of rotation of the drive sheave from when the car starts running until the car reaches the boundary; and when the running control unit causes the car to run at the second speed, the rotation measuring unit. and a braking distance calculator that calculates the braking distance by the protection device based on the amount of rotation of the drive sheave measured by the.

A method for measuring a braking distance according to the present disclosure includes a car, a main rope supporting the load of the car, a drive sheave around which the main rope is wound, and the car traveling through the main rope by rotation of the drive sheave. a drive motor, a braking device for braking the car by braking the rotation of the drive sheave, a detector for detecting whether the position of the car is in a preset region, and a detector for detecting whether the car is in a preset region, and the car travels in the region. A measuring method for measuring the braking distance by the protective device in an elevator having a protective device that operates the braking device to stop the car when the detector detects that the elevator has passed through the boundary of Passing the car through a boundary at a first preset speed causes a first travel step in which the protective device activates the braking device to stop the car and a slippage of the main rope relative to the drive sheave. a second traveling step of causing the car to travel so as to return to the boundary from the stop position where the car stopped in the first traveling step at a second speed that is lower than the first speed preset as a speed that does not occur; a calculating step of calculating the braking distance based on the amount of rotation of the drive sheave measured from when the car starts traveling at the stop position to when the car reaches the boundary in the second traveling step; Prepare.

With the measurement system, elevator, or measurement method according to the present disclosure, the braking distance can be measured more accurately.

1 is a configuration diagram of an elevator according to Embodiment 1; FIG. 4 is a sequence diagram showing an example of the operation of the elevator according to Embodiment 1; FIG. 4 is a flow chart showing an example of the operation of the elevator according to Embodiment 1; FIG. 5 is a diagram showing an example of braking distance measurement in the elevator according to Embodiment 1; 2 is a hardware configuration diagram of main parts of the elevator according to Embodiment 1. FIG.

A mode for implementing the subject of the present disclosure will be described with reference to the attached drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are appropriately simplified or omitted. It should be noted that the subject of the present disclosure is not limited to the following embodiments, and modifications of any constituent elements of the embodiments, or modifications of any constituent elements of the embodiments, within the scope of the present disclosure. It can be omitted.

Embodiment 1.
FIG. 1 is a configuration diagram of an elevator 1 according to Embodiment 1. As shown in FIG.

The elevator 1 is applied, for example, to a building with multiple floors. In a building, a hoistway 2 for an elevator 1 is provided. The hoistway 2 is a vertically elongated space that spans a plurality of floors. A plurality of floor boards 3 are provided in the hoistway 2 . Each floor board 3 corresponds to one of the floors. Each floor board 3 is arranged on the corresponding floor. A landing 4 adjacent to the hoistway 2 is provided on each floor. At the landing 4 of each floor, a landing door 5 is provided. A landing door 5 is a door of the elevator 1 that partitions the landing 4 and the hoistway 2 . The elevator 1 includes a hoisting machine 6 , a main rope 7 , a car 8 , a counterweight 9 , a braking device 10 and a control panel 11 .

The hoist 6 is arranged, for example, above or below the hoistway 2 . For example, when the machine room of the elevator 1 is provided above the hoistway 2, the hoist 6 may be arranged in the machine room. The hoist 6 includes a drive motor 12 , a drive sheave 13 and an encoder 14 . The drive motor 12 is a device that generates drive force. The drive sheave 13 is a device that is rotated by the driving force generated by the drive motor 12 . The encoder 14 is a device that outputs pulse signals according to the rotation of the drive sheave 13 . The encoder 14 is, for example, an incremental encoder.

The main rope 7 is wound around the drive sheave 13. Main rope 7 supports the load of car 8 on one side of drive sheave 13 . Main rope 7 supports the load of counterweight 9 on the other side of drive sheave 13 . The main rope 7 is moved by the rotation of the drive sheave 13 so as to be wound up on the drive sheave 13 or to be paid out from the drive sheave 13 .

The car 8 is a device that transports users of the elevator 1 between multiple floors by running up and down on the hoistway 2 . The car 8 travels vertically in the hoistway 2 in conjunction with the movement of the main rope 7 caused by the rotation of the drive sheave 13 . The car 8 has a car door 15 . A car door 15 is a door of the elevator 1 that separates the inside and outside of the car 8 . The car door 15 is a device that opens and closes the landing door 5 of the floor in conjunction so that the user can get on and off when the car 8 stops on one of the floors. In the car 8 a detector is provided. The detector is a part that moves along the hoistway 2 together with the car 8 and detects the floor board 3 provided on each floor. Each floor slab 3 is arranged such that a detector detects that floor slab 3 while the car 8 is in the door zone of the corresponding floor. Here, the door zone of each floor is a preset area in which the car door 15 and the landing door 5 can be opened and closed on the floor. The detector thereby detects whether or not the car 8 is in the door zone of each floor. It should be noted that in this example the detector does not distinguish between the floorboards 3 from each other.

The balance weight 9 is a device that balances the load applied to both sides of the drive sheave 13 with the car 8 . The counterweight 9 travels vertically in the hoistway 2 in the opposite direction to the car 8 in conjunction with the movement of the main rope 7 caused by the rotation of the drive sheave 13 .

The brake device 10 is a device that brakes the rotation of the drive sheave 13. The braking device 10 includes a braking body 17 , brake shoes 18 , springs 19 and coils 20 . The braking body 17 is a member having a braking surface such as a brake disc or a brake drum. The braking body 17 is provided coaxially with the drive sheave 13 so as to be rotatable in conjunction with the drive sheave 13 . The brake shoe 18 is a portion that generates a frictional force that brakes the drive sheave 13 by being pressed against the braking surface of the braking body 17 . The spring 19 is a portion that presses the brake shoe 18 against the braking surface of the braking body 17 by elastic force when braking the rotation of the drive sheave 13 . The coil 20 is a portion that separates the brake shoe 18 from the braking surface of the braking body 17 against the elastic force of the spring 19 by the magnetic force generated by the excitation when the drive sheave 13 is released from rotation. The braking device 10 does not block the rotation of the drive sheave 13 while releasing the drive sheave 13 . When a control signal for braking the drive sheave 13 is input, the brake device 10 moves the brake shoe 18 , which has been separated from the braking surface of the braking body 17 by the magnetic force of the coil 20 , to the braking body 17 by the elastic force of the spring 19 . on the braking surface of the

The control panel 11 is a device that controls the operation of the elevator 1. The control panel 11 is arranged, for example, above or below the hoistway 2 . For example, when the machine room of the elevator 1 is provided above the hoistway 2, the control panel 11 may be arranged in the machine room. The control panel 11 controls the operation of the elevator 1 based on operation modes such as normal operation and diagnostic operation. Normal operation is a normal operation mode in which users and the like are transported between multiple floors. Diagnosis operation is an operation mode for diagnosing the state of equipment and devices of the elevator 1 . Diagnosis operation includes opening/closing diagnosis for diagnosing whether there is an abnormality in the opening/closing of the car door 15 and the hall door 5 on each floor. The control panel 11 is connected to the hoisting machine 6, the car 8, the detector, the braking device 10, etc., so as to output control signals and obtain information on the state of the elevator 1. The control panel 11 includes a management section 21 , a rotation measurement section 22 , a travel control section 23 and a maintenance processing section 24 . The management unit 21 is a part that manages the operation of the elevator 1 . The management unit 21 manages, for example, a call to run the car 8 on any floor. The rotation measuring section 22 is a section that measures the amount of rotation of the drive sheave 13 . The rotation measurement unit 22 measures the amount of rotation of the drive sheave 13 by counting pulse signals output from the encoder 14 according to the rotation of the drive sheave 13, for example. The running control unit 23 is a part that controls running such as starting and stopping of the car 8, for example. The travel control unit 23 may control the position of the car 8 based on the rotation of the drive sheave 13 measured by the rotation measurement unit 22 . The maintenance processing unit 24 is a part of the control panel 11 that performs processing related to maintenance and inspection of the elevator 1 .

In the elevator 1, a remote monitoring device 25 is applied. The remote monitoring device 25 is a device used for remote monitoring of the state of the elevator 1 . A remote monitoring device 25 is connected to the control panel 11 or the like so as to collect information on the state of the elevator 1 . Information collected by the remote monitoring device 25 is transmitted to the central management device 27 through a communication network 26 such as the Internet or a telephone line. The central management device 27 is a device that collects and manages information on the state of the elevator 1 . The central management device 27 is provided at a base such as an information center, for example.

In Elevator 1, protective device 28 is applied. The protective device 28 is, for example, an unintended car movement protection (UCMP). The protection device 28 is a device that operates the brake device 10 to stop the car 8 from traveling when the car 8 travels with the car door 15 open and goes out of the door zone. The protection device 28 causes the car 8 to stop after traveling the braking distance. In this example, the braking distance is the sum of the free running distance and the deceleration running distance. The idling distance is the electrical and mechanical distance from when the braking device operates to input a control signal to the braking device 10 until the brake shoe 18 is pressed against the braking surface of the braking body 17 to generate a frictional force. It is the distance traveled by the car 8 during the time lag. The deceleration travel distance is the distance traveled while decelerating from when the brake device 10 generates a frictional force for braking the drive sheave 13 until the car 8 stops. The deceleration travel distance includes the slip travel distance. The sliding travel distance is the distance that the car 8 moves due to the main rope 7 slipping on the drive sheave 13 in the deceleration travel distance.

In the elevator 1, the measurement system 29 is applied. The measurement system 29 is a system that measures the braking distance by the protection device 28 . The measurement system 29 includes part or all of the control panel 11 such as the management unit 21 , the rotation measurement unit 22 , the travel control unit 23 and the maintenance processing unit 24 . The measurement system 29 includes a braking distance calculator 30 . The braking distance calculator 30 is mounted as part of the functions of the control panel 11, for example. The braking distance calculation unit 30 is a part that calculates the braking distance based on the measurement result of the rotation measurement unit 22 when the travel control unit 23 causes the car 8 to perform measurement travel. Here, the measurement run is a run pattern that is performed when measuring the braking distance. In this example, the measurement run is performed multiple times. An upper limit is set for the number of times measurement runs are performed. The upper limit of the number of measurement runs is, for example, three. The braking distance calculation unit 30 stores each measurement result of the rotation measurement unit 22 in each measurement run. The braking distance calculator 30 has a storage area that can store the measurement results for the upper limit number of times. The braking distance calculator 30 calculates the braking distance based on the stored measurement results of a plurality of times. The measurement system 29 operates based on a measurement program. The measurement program is installed in the hardware of the measurement system 29 such as the control panel 11, for example. The measurement program is installed in the hardware through a portable storage medium storing the measurement program, for example. Alternatively, the measurement program may be installed in the hardware through the communication network 26, for example.

Next, an example of diagnostic operation of the elevator 1 will be described with reference to FIG.
FIG. 2 is a sequence diagram showing an operation example of the elevator 1 according to the first embodiment.

In this example, the braking distance is measured during the diagnostic operation performed by request from the outside of the elevator 1. The central management device 27 inputs a signal requesting the start of diagnostic operation to the maintenance processing section 24 of the control panel 11 through the communication network 26 and the remote monitoring device 25 .

The maintenance processing unit 24 determines whether the conditions for starting diagnostic operation are satisfied. The condition for starting the diagnostic operation includes, for example, a condition that no user is in the car 8 . Whether the condition is established is determined based on, for example, the measurement result of a weighing device provided in the car 8 . The maintenance processing unit 24 starts the diagnostic operation when determining that the conditions for starting the diagnostic operation are satisfied.

In diagnostic operation, the maintenance processing unit 24 outputs a restriction request to the management unit 21. A restriction request is, for example, a request to restrict registration of a call. After that, the maintenance processing unit 24 outputs a travel request to the measured floor to the management unit 21 . The floor to be measured is one of the floors set in advance among the plurality of floors. The floor to be measured is, for example, the top floor.

Based on the travel request from the maintenance processing unit 24, the management unit 21 outputs to the travel control unit 23 a control signal for causing the car 8 to travel to the measurement floor. The traveling control unit 23 causes the car 8 to travel to the measured floor based on the control signal input from the management unit 21, and stops the car 8 within the door zone of the measured floor.

At this time, the maintenance processing unit 24 may perform opening/closing diagnosis on the measured floor. In the opening/closing diagnosis, opening/closing of the car door 15 of the car 8 stopped on the measurement floor and the landing door 5 provided on the measurement floor is performed.

After that, the maintenance processing unit 24 outputs a measurement travel request to the travel control unit 23 through the management unit 21 . The measurement travel request is a request to cause the car 8 to perform the measurement travel. The measurement travel request includes the number of times the measurement travel is performed.

At this time, the braking distance calculation unit 30 clears the memory of the previously measured rotation amount stored in the storage area. In this example, the braking distance calculator 30 resets the value of the storage area that stores the amount of rotation to zero.

The travel control unit 23 causes the car 8 to perform multiple measurement travels based on the measurement travel request input from the management unit 21 . During this time, the rotation measuring unit 22 measures the amount of rotation of the drive sheave 13 in each measurement run. The braking distance calculation unit 30 stores the amount of rotation measured by the rotation measurement unit 22 in a storage area. After the multiple times of measurement travel, the braking distance calculator 30 calculates the braking distance based on the amount of rotation in the multiple times of measurement travel stored in the storage area. The braking distance calculation unit 30 outputs the calculated braking distance to the maintenance processing unit 24 through the management unit 21, for example, as a measurement result.

The maintenance processing unit 24 diagnoses the state of the elevator 1 including the state of the protective device 28 based on the input measurement results. The maintenance processing unit 24 notifies the central management device 27 of the diagnostic results through the remote monitoring device 25 and the communication network 26 .

The maintenance processing unit 24 outputs a restriction release request to the management unit 21 when no abnormality is detected in diagnostic operation. A restriction release request is a request to release the restriction of functions such as call registration based on the restriction request.

After that, the remote management device inputs a signal requesting the end of diagnostic operation to the management unit 21 through the maintenance processing unit 24 . The management unit 21 outputs a control signal requesting a response to the call to the floor so as to cause the car 8 to travel to any other floor among the floors to be measured. The travel control unit 23 stops the car 8 within the door zone of the floor based on the input request. After that, the operation mode of the elevator 1 returns to normal operation.

Next, an example of braking distance measurement by the protective device 28 will be described with reference to FIGS. 3 and 4. FIG.
3 is a flow chart showing an example of the operation of the elevator 1 according to Embodiment 1. FIG.
FIG. 4 is a diagram showing an example of braking distance measurement in the elevator 1 according to the first embodiment.

In step S1 of FIG. 3, the braking distance calculation unit 30 clears the memory of the rotation amount measured in the past stored in the storage area. After that, the elevator 1 proceeds to the process of step S2.

In step S2, the traveling control unit 23 causes the car 8 stopped inside the door zone of the measured floor to travel outside the door zone and stop. After that, the elevator 1 proceeds to the process of step S3.

In step S3, the traveling control unit 23 causes the car 8 stopped outside the door zone to travel into the door zone at a low speed. Here, the low speed is the preset running speed of the car 8 . The low speed is, for example, the traveling speed of the car 8 assumed in the scene where the protective device 28 is activated. Low speed is an example of a first speed. After that, the elevator 1 proceeds to the process of step S4.

In step S4, the detector detects that the car 8 passes the boundary from the outside to the inside of the door zone due to a change in the detection state of the floor plate 3 or the like. At this time, the protection device 28 operates the brake device 10 to brake the running of the car 8 . The car 8 stops at a stop position within the door zone. The processing of steps S3 and S4, in which the car 8 is driven into the door zone at a low speed and stopped at the stop position, is an example of the processing of the first driving step. After that, the elevator 1 proceeds to the process of step S5.

In step S5, the travel control unit 23 causes the car 8 to travel at a slow speed so as to turn back from the stop position inside the door zone to the boundary from the inside to the outside of the door zone passed in step S4. Here, the slow speed is the traveling speed of the car 8 set in advance. Slow speed is a speed that is slower than slow speed. The slow speed is set as a speed at which the main rope 7 does not slip on the drive sheave 13 . Slow speed is an example of a second speed. At this time, the rotation measuring unit 22 measures the amount of rotation of the driving sheave 13 while the car 8 travels from the stop position to the boundary at a slow speed by counting the pulse signals of the encoder 14 . The travel pattern of the car 8 from step S3 to step S5 is an example of measurement travel. The process of step S5 in which the car 8 is caused to travel at a slow speed from the stop position to the boundary is an example of the process of the second travel step. After that, the elevator 1 proceeds to the process of step S6.

In step S6, the braking distance calculation unit 30 stores the amount of rotation measured by the rotation measurement unit 22 in step S5 in an unused storage area after being cleared in step S1. After that, the elevator 1 proceeds to the process of step S7.

In step S7, the travel control unit 23 determines whether the car 8 has made the number of measurement travels specified in the measurement travel request from the management unit 21. When the determination result is No, the elevator 1 proceeds to the process of step S2. When the determination result is Yes, the elevator 1 proceeds to the process of step S8.

In step S8, the braking distance calculation unit 30 calculates the braking distance based on the measurement result of the amount of rotation in each measurement run stored in the storage area. The braking distance calculator 30 converts each rotation amount into a traveling distance of the car 8 using parameters of the elevator 1 such as the diameter of the driving sheave 13 . The braking distance calculator 30 calculates the average traveled distance of the car 8 at slow speed in each time obtained by the conversion as the braking distance by the protective device 28 . At this time, the braking distance calculation unit 30 calculates the average value excluding the times of measurement travel in which the amount of rotation is stored as 0. The processing of step S8 for calculating the braking distance based on the measurement result of the amount of rotation stored in the storage area of the braking distance calculator 30 is an example of the calculation process. After that, the elevator 1 finishes the process of measuring the braking distance.

In FIG. 4 an example of the position change of the car 8 during the measurement run is shown.

In the first traveling process, the car 8 enters from the outside of the door zone of the measurement floor toward the inside of the door zone at a low speed. When car 8 passes the boundary of the door zone, protection device 28 activates brake device 10 to stop car 8 . The braking distance, which is the running distance during this period, is the distance that the car 8 moves due to the rotation of the drive sheave 13 during idling and deceleration, and the distance that the car 8 moves due to the main rope 7 sliding on the drive sheave 13. and including. Therefore, the braking distance by the protection device 28 is longer than the traveling distance obtained by converting the amount of rotation of the drive sheave 13 when the car 8 is traveling in the door zone in the first traveling process.

In the second traveling process, the car 8 travels at slow speed in the direction opposite to the traveling direction in the first traveling process from the stop position in the first traveling process to the boundary of the door zone through which the car 8 passed in the first traveling process. Here, the arrival of the car 8 at the boundary of the door zone is determined based on, for example, a change in the detection state of the floor board 3 by the detector. In the second travel process, the car 8 returns to the traveled path after the protective device 28 is activated, so the traveling distance of the car 8 in the second travel process is the braking distance by the protective device 28 . Since no slippage occurs between the main rope 7 and the drive sheave 13 during running at a slow speed, the traveled distance in the second travel step is converted based on the amount of rotation of the drive sheave 13, so that braking without error due to slippage can be achieved. distance can be obtained.

In addition, in the first traveling process, the car 8 may travel at a low speed from inside the door zone of the measurement floor toward outside the door zone. At this time, the stop position of the car 8 is a position outside the door zone. In this case, in the second travel step, the car 8 travels at a slow speed so as to turn back from the stop position toward the inside of the door zone.

In addition, some or all of the functions of the travel control unit 23, the rotation measurement unit 22, and the braking distance calculation unit 30, which perform processing such as the first travel process, the second travel process, and the calculation process in the measurement system 29, It may be mounted on another device of the control panel 11 . Some or all of the functions may be installed in the remote monitoring device 25, for example. Also, part or all of the functions may be introduced into the existing control panel 11 of the elevator 1 or the like. The measurement system 29 may be an external system applied to an existing elevator 1, for example.

Also, the encoder 14 may be an absolute encoder or the like. The rotation measurement unit 22 may measure the amount of rotation of the drive sheave 13 using another sensor such as a resolver.

As described above, the elevator 1 according to Embodiment 1 includes the car 8, the main rope 7, the drive sheave 13, the drive motor 12, the brake device 10, the detector, the protection device 28, and a measurement system 29 . Main ropes 7 support the load of car 8 . On the drive sheave 13 the main rope 7 is wound. The drive motor 12 causes the car 8 to run through the main rope 7 by rotating the drive sheave 13 . The brake device 10 brakes the running of the car 8 by braking the rotation of the drive sheave 13 . A detector detects whether the position of the car 8 is in the door zone. The protection device 28 activates the braking device 10 to stop the car 8 when the detector detects that the car 8 has traveled past the boundary of the door zone. The measurement system 29 includes a travel control section 23 , a rotation measurement section 22 and a braking distance calculation section 30 . The travel control unit 23 causes the car 8 to pass through the boundary of the door zone at a low speed, thereby operating the brake device 10 by the protection device 28 and stopping the car 8 . Thereafter, the travel control unit 23 causes the car 8 to travel at slow speed so as to return from the stop position where the car 8 has stopped to the boundary of the door zone. Here, the slow speed is a speed lower than a preset low speed at which the main rope 7 does not slip on the drive sheave 13 . The rotation measuring unit 22 measures the amount of rotation of the drive sheave 13 from when the car 8 starts running at the stop position to when the car 8 reaches the boundary of the door zone when the running control unit 23 causes the car 8 to run at a slow speed. measure. The braking distance calculation unit 30 calculates the braking distance by the protective device 28 based on the amount of rotation of the drive sheave 13 measured by the rotation measurement unit 22 when the traveling control unit 23 causes the car 8 to travel at a slow speed.
Further, the braking distance measuring method according to the first embodiment includes a first running process, a second running process, and a calculating process. The first traveling step is a step of causing the car 8 to pass through the boundary of the door zone at a low speed so that the protective device 28 operates the braking device 10 to stop the car 8 . The second traveling step is a step of causing the car 8 to travel at a slow speed so as to return from the stop position where the car 8 stopped in the first traveling step to the boundary of the door zone. The calculation step is a step of calculating the braking distance based on the amount of rotation of the drive sheave 13 measured from when the car 8 starts traveling at the stop position until the car 8 reaches the boundary of the door zone in the second traveling step. be.

With such a configuration, the car 8 returns to the traveled distance after the protective device 28 is actuated at a very slow speed without slippage, so that a more accurate braking distance is obtained based on the amount of rotation of the drive sheave 13 without errors due to slippage. can be measured. Also, since the braking distance is measured by the car 8 returning from the stop position to the position of the car 8 at which the protective device 28 has been activated, information on the absolute position of the car 8 in the hoistway 2 is not required. In addition, since the operator does not need to manually measure the braking distance using a tape measure or the like, diagnosis of the state of the elevator 1 is made more efficient. In addition, since the braking distance can be measured by at least one set of measurement runs of the outbound and return trips, automatic measurement in diagnostic driving can be performed quickly.

In addition, the travel control unit 23 causes the car 8 to perform measurement travel a plurality of times. A measured run is a run pattern that includes crossing a door zone boundary at low speed and turning back to the boundary at slow speed. The braking distance calculation unit 30 stores each amount of rotation of the drive sheave 13 measured by the rotation measurement unit 22 in each measurement run. The braking distance calculation unit 30 calculates the braking distance based on the stored rotation amounts in the plurality of measurement runs.

Such a configuration reduces accidental errors in braking distance measurement. Therefore, the measurement of the braking distance becomes more accurate.

In addition, the braking distance calculation unit 30 clears the memory of the amount of rotation in the past measurement runs before multiple times of measurement runs.

Such a configuration prevents erroneous calculation of the braking distance due to reference to measured values in past measurement runs.

Also, in the diagnostic operation including the opening/closing diagnosis of the door of the elevator 1, the braking distance is measured in the door zone of the measurement floor among the plurality of floors. The travel control unit 23 performs measurement travel after opening/closing diagnosis.

With this configuration, it is possible to suppress the influence on the open/close diagnosis due to the shift of the stop position of the car 8 during the measurement traveling inside and outside the door zone. Therefore, the diagnosis of the state of the elevator 1 in the diagnostic operation can be performed more accurately.

In addition, the elevator 1 has a management unit 21. After the travel control unit 23 performs measurement travel, the management unit 21 requests the travel control unit 23 to respond to a call to travel the car 8 to another floor among the plurality of floors to be measured.

With such a configuration, after the measurement travel that moves inside and outside the door zone, the deviation of the stop position of the car 8 is corrected by landing on another floor. Therefore, the effect of the measurement travel on subsequent travel can be suppressed.

Next, an example of the hardware configuration of the elevator 1 will be explained using FIG.
FIG. 5 is a hardware configuration diagram of main parts of the elevator 1 according to the first embodiment.

Each function of processing in elevator 1 can be realized by a processing circuit. The processing circuitry comprises at least one processor 100a and at least one memory 100b. The processing circuitry may include at least one piece of dedicated hardware 200 in conjunction with, or as an alternative to, processor 100a and memory 100b.

When the processing circuit includes the processor 100a and the memory 100b, each function of the elevator 1 is implemented by software, firmware, or a combination of software and firmware. At least one of software and firmware is written as a program. The program is stored in memory 100b. The processor 100a realizes each function of the elevator 1 by reading and executing the programs stored in the memory 100b.

The processor 100a is also called a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP. The memory 100b is composed of, for example, nonvolatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM.

When the processing circuit comprises dedicated hardware 200, the processing circuit may be implemented, for example, as a single circuit, multiple circuits, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

Each function of processing in elevator 1 can be realized by a processing circuit. Alternatively, each function of the elevator 1 can be collectively realized by a processing circuit. A part of each function of the elevator 1 may be realized by the dedicated hardware 200 and the other part may be realized by software or firmware. Thus, the processing circuitry implements each function of elevator 1 in dedicated hardware 200, software, firmware, or a combination thereof.

The measurement system according to the present disclosure can be applied to elevators. Elevators according to the present disclosure are applicable to buildings having multiple floors. The measurement method according to the present disclosure can be applied to measurement of braking distance in elevators.

1 elevator, 2 hoistway, 3 floor board, 4 landing, 5 landing door, 6 hoisting machine, 7 main rope, 8 car, 9 counterweight, 10 brake device, 11 control panel, 12 drive motor, 13 drive sheave, 14 encoder, 15 car door, 16 detector, 17 braking body, 18 brake shoe, 19 spring, 20 coil, 21 management unit, 22 rotation measurement unit, 23 traveling control unit, 24 maintenance processing unit, 25 remote monitoring device, 26 Communication network, 27 central control device, 28 protection device, 29 measurement system, 30 braking distance calculation unit, 100a processor, 100b memory, 200 dedicated hardware

Claims

basket,
a main rope supporting the load of said car;
a driving sheave around which the main rope is wound;
a drive motor that causes the car to travel through the main rope by rotation of the drive sheave;
a braking device that brakes the running of the car by braking the rotation of the drive sheave;
a detector for detecting whether the position of the car is within a preset area; and activating the braking device when the detector detects that the car travels past the boundary of the area. Applied to an elevator having a protective device that stops the car by
Passing the car through the boundary at a first preset speed causes the protective device to actuate the braking device to stop the car, followed by slippage of the main rope relative to the drive sheave. a traveling control unit that causes the car to travel back to the boundary from a stop position where the car stops at a second speed that is lower than the first speed that is preset as a non-loading speed;
Rotation for measuring the amount of rotation of the drive sheave from when the car starts running at the stop position to when the car reaches the boundary when the running control unit causes the car to run at the second speed. a measuring unit;
a braking distance calculation unit that calculates the braking distance by the protection device based on the amount of rotation of the drive sheave measured by the rotation measurement unit when the travel control unit causes the car to travel at the second speed;
braking distance measurement system.
The travel control unit causes the car to perform a plurality of measurement travels each including passing through the boundary at the first speed and returning to the boundary at the second speed,
The braking distance calculation unit stores each amount of rotation of the drive sheave measured by the rotation measurement unit in each of the plurality of measurement runs, and based on the stored rotation amount in the plurality of measurement runs. The braking distance measuring system according to claim 1, wherein the braking distance is calculated by
3. The braking distance measurement system according to claim 2, wherein the braking distance calculation unit clears the memory of the rotation amount in past measurement runs before the plurality of measurement runs.
In diagnostic operation including door opening/closing diagnosis on at least one of a plurality of floors, the braking distance is measured using a door zone preset for a measurement floor among the plurality of floors as the region. In case,
2. The braking distance measurement according to claim 1, wherein the traveling control unit performs measurement traveling including passing through the boundary at the first speed and turning back to the boundary at the second speed after the opening/closing diagnosis. system.
basket,
a main rope supporting the load of the car;
a driving sheave around which the main rope is wound;
a drive motor that causes the car to travel through the main rope by rotation of the drive sheave;
a braking device that brakes the running of the car by braking the rotation of the drive sheave;
a detector for detecting whether the position of the car is in a preset area;
a protection device that activates the braking device to stop the car when the detector detects that the car travels past the boundary of the area;
Passing the car through the boundary at a first preset speed causes the protective device to actuate the braking device to stop the car, followed by slippage of the main rope relative to the drive sheave. a traveling control unit that causes the car to travel back to the boundary from a stop position where the car stops at a second speed that is lower than the first speed that is preset as a non-loading speed;
Rotation for measuring the amount of rotation of the drive sheave from when the car starts running at the stop position to when the car reaches the boundary when the running control unit causes the car to run at the second speed. a measuring unit;
a braking distance calculation unit that calculates the braking distance by the protection device based on the amount of rotation of the drive sheave measured by the rotation measurement unit when the travel control unit causes the car to travel at the second speed;
Elevator with.
In diagnostic operation including door opening/closing diagnosis on at least one of a plurality of floors, the braking distance is measured using a door zone preset for a measurement floor among the plurality of floors as the region. In case,
6. The elevator according to claim 5, wherein the travel control unit performs measurement travel including passing through the boundary at the first speed and turning back to the boundary at the second speed after the opening/closing diagnosis.
When the braking distance is measured using a door zone set in advance for the measurement floor among the plurality of floors as the region,
After measurement travel including passage through the boundary at the first speed and turning back to the boundary at the second speed by the travel control unit, other floors of the measured floor among the plurality of floors 6. The elevator according to claim 5, further comprising a management unit that requests the travel control unit to respond to a call to run the car during the period.
basket,
a main rope supporting the load of said car;
a driving sheave around which the main rope is wound;
a drive motor that causes the car to travel through the main rope by rotation of the drive sheave;
a braking device that brakes the running of the car by braking the rotation of the drive sheave;
a detector for detecting whether the position of the car is within a preset area; and activating the braking device when the detector detects that the car travels past the boundary of the area. A measuring method for measuring a braking distance by the protective device in an elevator having a protective device that stops the car by
a first traveling step of causing the car to pass through the boundary at a preset first speed to operate the brake device by the protective device to stop the car;
At a second speed that is lower than the first speed preset as a speed at which the main rope does not slip on the drive sheave, the car is returned from the stop position where the car stops in the first traveling step to the boundary. a second traveling step of traveling the car;
a calculating step of calculating the braking distance based on the amount of rotation of the drive sheave measured from when the car starts traveling at the stop position to when the car reaches the boundary in the second traveling step;
A braking distance measurement method comprising: