JP7260075B2 - Elevator device and positioning method - Google Patents

Description

FIELD OF THE DISCLOSURE The present disclosure relates to an elevator apparatus and a method for identifying locations where pulleys are attached.

Various pulleys are provided in the elevator system. When servicing an elevator system, it may be necessary to know where the pulleys are mounted.

As an example, such information is needed when creating three-dimensional graphics of the interior of a hoistway.

As another example, US Pat. No. 6,300,001 describes a device for detecting breaks in a rope. In the device described in Patent Document 1, the length of the rope is treated as known. In order to determine the length of the rope, we need information on where the pulley is attached.

WO2017/022709

Conventionally, maintenance personnel used a measure to measure the position where the pulley was attached. However, pulleys are often installed in inaccessible locations, such as at the top of a hoistway. For this reason, the measurement was sometimes accompanied by difficulties.

The present disclosure has been made to solve the problems described above. SUMMARY OF THE DISCLOSURE It is an object of the present disclosure to provide an elevator apparatus in which the location where the pulleys are attached can be easily identified. Another object of the present disclosure is to provide a method for easily identifying where a pulley is attached.

An elevator device according to the present disclosure detects a car moving in a hoistway, a rope that suspends the car in the hoistway, an identifier attached to the rope, a pulley around which the rope is wound, and the position of the car. a first detection means, a second detection means for detecting that the identifier is placed at a specific position with respect to the car, and a calculation means for calculating the position of the pulley based on the first position and the second position. , provided. The first position is the position detected by the first detection means when the second detection means detects that the identifier is placed at the specific position. The second position is when the second detecting means detects that the identifying object is positioned at the specific position after the identifying object has passed the pulley as the car moves upward or downward from the first position. 1 is the position detected by the detection means.

A position specifying method according to the present disclosure is an elevator including a car that moves in a hoistway, a rope that suspends the car on the hoistway, a pulley around which the rope is wound, and detection means that detects the position of the car. A method for locating a pulley in an apparatus. The method includes the steps of: attaching an identification object to the rope; acquiring a position detected by a detection means when the identification object attached to the rope is placed at a specific position with respect to the car as a first position; a step of moving the car upward or downward from a first position to allow the identifying object to pass through the pulley; as a second position, and calculating the position of the pulley based on the obtained first and second positions.

According to the present disclosure, it is possible to easily identify the position where the pulley is attached.

1 is a diagram showing an example of an elevator device according to Embodiment 1; FIG. It is a figure which shows the other example of an elevator apparatus. 4 is a diagram for explaining functions of a maintenance terminal; FIG. 4 is a flow chart showing a procedure performed by maintenance personnel to identify the position of the pulley; It is a figure for demonstrating the method to pinpoint the position of a pulley. 4 is a flow chart showing an operation example of a maintenance terminal; It is a figure for demonstrating the other example of an elevator apparatus. FIG. 3 is a diagram showing an example of hardware resources of a maintenance terminal; FIG. FIG. 10 is a diagram showing another example of hardware resources of a maintenance terminal;

A detailed description is given below with reference to the drawings. Duplicate descriptions are appropriately simplified or omitted. In each figure, the same reference numerals denote the same or corresponding parts.

Embodiment 1.
FIG. 1 is a diagram showing an example of an elevator device according to Embodiment 1. FIG. The elevator system comprises a car 1 and a counterweight 2. The car 1 moves up and down in the hoistway 3 . A counterweight 2 moves up and down the hoistway 3 . A car 1 and a counterweight 2 are suspended in a hoistway 3 by ropes 4 . As an example, the rope 4 is a wire rope.

FIG. 1 shows, as an example, a 2:1 roping elevator system. In the example shown in FIG. 1 , the hoist 5 is provided at the top of the hoistway 3 . The hoist 5 comprises a drive sheave 6 . The car 1 also comprises hanging wheels 7 and 8 . The counterweight 2 comprises a hanger wheel 9 .

One end 4 a of the rope 4 is supported on the top of the hoistway 3 . The rope 4 extends downward from the end 4a and is wound around the suspension wheel 8, the suspension wheel 7, the drive sheave 6, and the suspension wheel 9 in sequence. The other end 4 b of rope 4 is supported on the top of hoistway 3 . In the example shown in FIG. 1, the drive sheave 6 is an example of the pulley A around which the rope 4 is wound.

FIG. 2 is a diagram showing another example of the elevator device. The example shown in FIG. 2 is different from the example shown in FIG. 1 in that the elevator apparatus includes return cars 10 and 11 . Moreover, the hoist 5 is provided in the pit of the hoistway 3 .

The return car 10 is rotatably provided at the top of the hoistway 3 . The return car 11 is rotatably provided at the top of the hoistway 3 . In the example shown in FIG. 2, the rope 4 extends downward from the end 4a and is wound around the sling sheave 8, the sling sheave 7, the return sheave 11, the drive sheave 6, the return sheave 10, and the sling sheave 9 in sequence. Return sheaves 10 and 11 and drive sheave 6 are an example of pulley A around which rope 4 is wound.

The car 1 moves according to the rotation of the drive sheave 6 . That is, the hoist 5 drives the car 1 . The control device 12 controls the hoist 5 . The movement of car 1 is controlled by control device 12 . In the example shown in this embodiment, the hoisting machine 5 and the control device 12 are installed in the hoistway 3 . The hoisting machine 5 and the control device 12 may be installed in a machine room above the hoistway 3 .

A communication device 13 is connected to the control device 12 . The communication device 13 is a device for the elevator device to communicate with the outside. The communication device 13 communicates with the outside via the network 14 . The external includes remote monitoring centers and the like that monitor the elevator system.

A camera 15 is provided in the car 1 . FIG. 1 shows an example in which the camera 15 is provided at the bottom of the car 1. As shown in FIG. If the car 1 is equipped with a socket for a light bulb, the power supply to the camera 15 may come from this socket. A camera 15 photographs the inside of the hoistway 3 . A portion of the rope 4 adjacent to the car 1 is also photographed by the camera 15. - 特許庁

The hoist 5 includes an encoder 16 (not shown in FIGS. 1 and 2). The encoder 16 detects the rotation angle of the drive sheave 6 . The encoder 16 outputs information on the detected rotation angle. The function of the encoder 16 may be provided by a speed governor (not shown).

FIG. 1 shows an example in which an elevator maintenance worker brings a maintenance terminal 18 to a hall 17 where a car 1 stops. The maintenance terminal 18 is, for example, a smart phone. The maintenance terminal 18 may be a tablet type terminal. The maintenance terminal 18 may be a dedicated terminal designed for maintenance.

FIG. 3 is a diagram for explaining the functions of the maintenance terminal 18. As shown in FIG. The maintenance terminal 18 includes a display device 20 , a storage unit 21 , an image analysis unit 22 , a detection unit 23 , a detection unit 24 , a calculation unit 25 and a display control unit 26 .

The procedure for specifying the position where the pulley A is attached will be described in detail below with reference to FIGS. 4 to 6 as well. Hereinafter, the position where the pulley A is attached is also simply referred to as "the position of the pulley A". In the example shown in this embodiment, the car 1 moves only up and down. Therefore, the "position" of car 1 is synonymous with the "height" at which car 1 is. The "position" of pulley A is synonymous with the "height" at which pulley A is located.

FIG. 4 is a flow chart showing the procedure performed by maintenance personnel to identify the position of the pulley A. As shown in FIG. FIG. 5 is a diagram for explaining a method of specifying the position of the pulley A. FIG. The maintenance staff first attaches the identifier 19 to the rope 4 (S101). In S<b>101 , maintenance personnel may apply paint to the rope 4 . Maintenance personnel may attach a thin member to the rope 4 . Maintenance personnel may attach a seal-like member to the rope 4 .

Next, processing is performed to obtain information on the first position. The first position is the position of car 1 when identifier 19 is placed at a specific position (height) with respect to car 1 . In the following, when the identifier 19 is simply described as "position", it means the height at which the identifier 19 exists. In the example shown in FIG. 5, the specific position is the same position as the car 1 position.

FIG. 6 is a flow chart showing an operation example of the maintenance terminal 18. As shown in FIG. In the maintenance terminal 18, the image analysis unit 22 analyzes the image captured by the camera 15 (S201). The detection unit 23 detects that the identifying object 19 is arranged at a specific position with respect to the car 1 based on the analysis result by the image analysis unit 22 (Yes in S202). In the example shown in FIG. 5 , the detection unit 23 detects that the identifier 19 is placed at the same position as the car 1 . FIG. 5(a) shows a state in which both the identifier 19 and the car 1 are placed at the position X0.

The detector 24 detects the position of the car 1 based on the output signal from the encoder 16 . If it is determined as Yes in S202, the position of the car 1 detected by the detection unit 24 at that time is stored in the storage unit 21 as the first position (S203). In the example shown in FIG. 5, the position X0 is stored in the storage unit 21 as the first position.

Next, the maintenance staff moves the car 1 upward or downward from the first position so that the identifier 19 attached to the rope 4 passes through the pulley A (S102). The movement of the car 1 in S102 may be automatically started based on the control signal output from the maintenance terminal 18 after the information on the first position is stored in the storage unit 21 . In the example shown in FIG. 5, car 1 moves upward from position X0. The identifier 19 passes through the pulley A by starting the movement of the car 1 in S102.

Next, a process for acquiring information on the second position is performed. The second position is the position of car 1 when the identifier 19 is again placed in a specific position relative to the car 1 after the identifier 19 has passed pulley A.

Even after the car 1 has moved from the first position, the image analysis unit 22 analyzes the image captured by the camera 15 (S204). Based on the analysis result of the image analysis unit 22, the detection unit 23 detects that the identification object 19 is arranged at a specific position with respect to the car 1, that is, that it is arranged at the same position as the car 1. (Yes in S205).

FIG. 5(b) shows a state in which both the identifier 19 and the car 1 are placed at the position X1 after the car 1 starts moving upward from the position X0. If it is determined as Yes in S205, the position of the car 1 detected by the detection unit 24 at that time is stored in the storage unit 21 as the second position (S206). In the example shown in FIG. 5, the position X1 is stored in the storage unit 21 as the second position.

When the processing for acquiring the first position and the second position is completed, the calculator 25 calculates the position of the pulley A based on the acquired first position and second position (S207). Assuming that the position of the pulley A is a position X, the calculator 25 calculates the position X using a linear equation regarding the distance L1 that the identifier 19 has moved from the position X. FIG.
X-X1=2(X1-X0)-(X-X0) (1)

An identifier 19 is attached to the rope 4 . Therefore, in the 2:1 roping elevator system, the distance L2 over which the identifier 19 moves is twice the distance over which the car 1 moves. The identifier 19 moves by 2 (X1-X0) while the car 1 moves from the first position to the second position. That is, the distance L2 shown in FIG. 5(c) is equal to 2(X1-X0).

The display controller 26 displays the position X of the pulley A calculated by the calculator 25 on the display 20 (S208). The maintenance worker can confirm the position X of the pulley A by looking at the display 20 (S103).

In the example shown in this embodiment, the position X of the pulley A can be easily specified by moving the car 1 so that the identifier 19 attached to the rope 4 passes through the pulley A. Maintenance personnel need not actually measure the position of the pulley A using a measure or the like. Therefore, the burden on maintenance personnel can be reduced.

In the example shown in this embodiment, the detection unit 23 detects the position of the identifying object 19 based on the image captured by the camera 15 . If the elevator system is equipped with a maintenance camera in advance, maintenance personnel do not need to prepare a camera just to identify the position of the pulley A.

Other functions that can be employed by the present elevator system are described below. The elevator device may employ a combination of the functions described below.

FIG. 7 is a diagram for explaining another example of the elevator device. In the example shown in FIG. 7, the car 1 is not provided with the camera 15 . The car 1 is provided with a sensor 28 for detecting the identifier 19 instead of the camera 15 . Sensor 28 is, for example, a laser sensor.

Based on the output signal from the sensor 28 , the detection unit 23 detects that the identifier 19 has been placed at a specific position with respect to the car 1 . In the example shown in FIG. 7, the sensor 28 detects the identifying object 19 at a position higher by the distance H than the position detected by the detection unit 24 . That is, the distance H is the vertical distance between the position detected by the detection unit 24 and the specific position.

In the example shown in FIG. 7, when the detection unit 23 detects that the identifying object 19 is placed at a position higher by the distance H than the position detected by the detection unit 24, the determination in S202 is Yes. FIG. 7(a) shows a state in which the car 1 is placed at the position X0 and the identifier 19 is placed at the position (X0+H).

If it is determined as Yes in S202, the position of the car 1 detected by the detection unit 24 at that time is stored in the storage unit 21 as the first position (S203). In the example shown in FIG. 7, the position X0 is stored in the storage unit 21 as the first position.

Thereafter, the identifier 19 passes through the pulley A as the car 1 moves upward from the position X0. After the identifying object 19 has passed through the pulley A, when the detecting unit 23 detects again that the identifying object 19 has been placed at a position higher than the position detected by the detecting unit 24 by the distance H, a determination of Yes is made in S205.

FIG. 7(b) shows a state in which the car 1 is placed at the position X1 and the identifier 19 is placed at the position (X1+H) after the identifier 19 has passed the pulley A. FIG. That is, FIG. 7(b) shows a state where it is determined as Yes in S205. If it is determined as Yes in S205, the position of the car 1 detected by the detection unit 24 at that time is stored in the storage unit 21 as the second position (S206). In the example shown in FIG. 7, the position X1 is stored in the storage unit 21 as the second position.

As described above, the distance L2 traveled by the identifier 19 is twice the distance traveled by the car 1 . In the example shown in FIG. 7, car 1 is also moving from position X0 to position X1. Therefore, the identifier 19 moves by 2 (X1-X0) while the car 1 moves from the first position to the second position. A linear equation regarding the distance L1 that the identifier 19 has moved from the position X is expressed as follows.
(X-(X1+H))=2(X1-X0)-(X-(X0+H)) (2)
Equation 1 is obtained by setting H=0 in Equation 2.

The calculation unit 25 calculates the position X of the pulley A based on the distance H in addition to the first position and the second position stored in the storage unit 21 in S207. The distance H may be set in advance, or may be input by maintenance personnel when the position X is specified.

Next, an example in which the maintenance terminal 18 further includes a determination unit 27 will be described. The determination unit 27 determines whether or not the identifier 19 has passed the pulley A after the car 1 has moved from the first position. For example, when the series of operations shown in FIG. 6 is automatically performed, the process of S206 for storing the second position is executed after the determination unit 27 determines that the identification object 19 has passed the pulley A. is preferred.

As an example, the determination unit 27 makes the above determination based on the horizontal position of the identification object 19 when the detection unit 23 detects that the identification object 19 is arranged at a specific position with respect to the car 1. conduct.

Consider the case where the horizontal Z-axis is set as shown in FIG. The Z-axis coordinate of the portion of the rope 4 from the sling wheel 7 to the pulley A is z1. The Z-axis coordinate of the portion of the rope 4 from the pulley A to the suspension wheel 9 is z2. The Z-axis coordinate of the portion of the rope 4 from the suspension wheel 9 to the end portion 4b is z3.

In the example shown in FIG. 5, the Z-axis coordinate of the identifier 19 is z1 when it is determined as Yes in S202. When the car 1 moves upward from the position X0 and the identification object 19 passes the pulley A, the Z-axis coordinate of the identification object 19 becomes z2 until the identification object 19 passes the hanging wheel 9. Therefore, if the Z-axis coordinate of the identifying object 19 is z2 when it is determined Yes in S205, the determining unit 27 determines that the identifying object 19 has passed the pulley A. FIG. When the determining unit 27 determines that the identifying object 19 has passed the pulley A, the process proceeds to S206, and the position X1 is stored in the storage unit 21 as the second position.

As another example, the determination unit 27 determines the movement direction of the car 1 and the movement direction of the identification object 19 when the detection unit 23 detects that the identification object 19 is arranged at a specific position with respect to the car 1. You may perform the said determination based on.

In the example shown in FIG. 5, immediately after the car 1 starts moving upward from the position X0, the identifier 19 also moves upward. After the identification object 19 passes the pulley A, the identification object 19 moves downward until the identification object 19 passes the suspension wheel 9 . Therefore, if the moving direction of the identifying object 19 is downward when it is determined as Yes in S205, the determining unit 27 determines that the identifying object 19 has passed the pulley A. That is, if the direction of movement of the identification object 19 when it is determined as Yes in S205 is opposite to the direction of movement of the identification object 19 immediately after the car 1 starts moving from the first position, the determination unit 27 It is determined that the identifier 19 has passed the pulley A.

In the present embodiment, an example has been described in which the maintenance terminal 18 carried by maintenance personnel is a device for identifying the position where the pulley A is attached. Maintenance personnel can use the maintenance terminal 18 at various sites.

As another example, the elevator device may be provided with a device having the same function as the maintenance terminal 18 has. As an example, the device is permanently installed on the car 1 . The control device 12 may be provided with functions similar to those of the maintenance terminal 18 . As another example, a remote monitoring center may be provided with functions similar to those of the maintenance terminal 18 . In such a case, the communication device 13 transmits image data captured by the camera 15 to the monitoring center via the network 14 .

In the present embodiment, each unit indicated by reference numerals 21 to 27 indicates the function of the maintenance terminal 18. FIG. FIG. 8 is a diagram showing an example of hardware resources of the maintenance terminal 18. As shown in FIG. The maintenance terminal 18 has a processing circuit 30 including a processor 31 and a memory 32 as hardware resources. The function of the storage unit 21 is implemented by the memory 32 . The maintenance terminal 18 implements the functions of the units indicated by reference numerals 22 to 27 by causing the processor 31 to execute programs stored in the memory 32 . A semiconductor memory or the like can be used as the memory 32 .

FIG. 9 is a diagram showing another example of hardware resources of the maintenance terminal 18. As shown in FIG. In the example shown in FIG. 9, maintenance terminal 18 comprises processing circuitry 30 including processor 31 , memory 32 and dedicated hardware 33 . FIG. 9 shows an example in which a part of the functions of the maintenance terminal 18 are implemented by dedicated hardware 33 . All the functions of the maintenance terminal 18 may be realized by dedicated hardware 33 . Dedicated hardware 33 can be a single circuit, multiple circuits, programmed processors, parallel programmed processors, ASICs, FPGAs, or combinations thereof.

The location method according to the present disclosure can be used in an elevator system with pulleys.

1 cage, 2 counterweight, 3 hoistway, 4 rope, 4a-4b ends, 5 hoisting machine, 6 driving sheave, 7-9 suspension wheel, 10-11 return wheel, 12 control device, 13 communication device, 14 network, 15 camera, 16 encoder, 17 hall, 18 maintenance terminal, 19 identification object, 20 display device, 21 storage unit, 22 image analysis unit, 23 detection unit, 24 detection unit, 25 calculation unit, 26 display control unit, 27 Determination Unit 28 Sensor 30 Processing Circuit 31 Processor 32 Memory 33 Dedicated Hardware

Claims (7)

A car traveling in a hoistway,
a rope for suspending the car in the hoistway;
an identifier attached to the rope;
a pulley around which the rope is wound;
a first detection means for detecting the position of the car;
a second detection means for detecting that the identifier has been placed at a specific position with respect to the car;
calculation means for calculating the position of the pulley based on the first position and the second position;
with
the first position is a position detected by the first detection means when the second detection means detects that the identifier is placed at the specific position;
In the second position, the identifying object is placed at the specific position after the identifying object has passed the pulley as the car moves upward or downward from the first position. The elevator apparatus being the position detected by said first detection means when detected by said detection means. 2. The elevator apparatus according to claim 1, wherein said calculating means calculates the position of said pulley based also on the distance between the position detected by said first detecting means and said specific position. After the car is moved from the first position, the identification is performed based on the horizontal position of the identifier when the second detection means detects that the identifier is placed at the specific position. 3. The elevator system according to claim 1, further comprising determination means for determining whether or not a body has passed through said pulley. Based on the moving direction of the car when the second detection means detects that the identifying object is arranged at the specific position and the moving direction of the identifying object, the car moves from the first position. 3. The elevator apparatus according to claim 1, further comprising determination means for determining whether or not the identifying object has passed through the pulley after moving. A camera provided in the basket,
5. The elevator according to any one of claims 1 to 4, wherein the second detection means detects that the identifying object has been placed at the specific position based on the image captured by the camera. Device. A car traveling in a hoistway,
a rope for suspending the car in the hoistway;
a pulley around which the rope is wound;
detection means for detecting the position of the car;
A method for locating the pulley in an elevator system comprising:
attaching an identifier to the rope;
acquiring a position detected by the detecting means when the identifier attached to the rope is placed at a specific position with respect to the car as a first position;
moving the car upwards or downwards from the first position to allow the identifier to pass through the pulley;
obtaining, as a second position, the position detected by the detecting means when the identifying object is placed at the specific position after the identifying object has passed through the pulley;
calculating the position of the pulley based on the obtained first position and the second position;
locating method with 7. The position specifying method according to claim 6, wherein the position of said pulley is calculated also based on the distance between the position detected by said detecting means and said specific position.

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